--- /dev/null
+commit be3de98aef65403129a4b714ddce8ab71f563209
+Author: Ash Benz <ash.benz@bk.ru>
+Date: Fri May 27 22:26:45 2016 +0800
+
+ ipq806x/dts: Add Archer C2600 DTS
+
+ Signed-off-by: Ash Benz <ash.benz@bk.ru>
+
+diff --git a/target/linux/ipq806x/image/Makefile b/target/linux/ipq806x/image/Makefile
+index 52cc1fa..77391d0 100644
+--- a/target/linux/ipq806x/image/Makefile
++++ b/target/linux/ipq806x/image/Makefile
+@@ -36,11 +36,6 @@ define Build/append-dtb
+ cat $(DTS_DIR)/$(DEVICE_DTS).dtb >> $@
+ endef
+
+-define Build/append-new-dtb
+- $(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb)
+- cat $@.dtb >> $@
+-endef
+-
+ define Build/append-file
+ cat $(1) >> $@
+ endef
+@@ -95,7 +90,7 @@ define Device/TpSafeImage
+ PROFILES += $$(DEVICE_NAME)
+ FILESYSTEMS := squashfs
+ KERNEL_SUFFIX := -uImage
+- KERNEL = kernel-bin | append-new-dtb | uImage none
++ KERNEL = kernel-bin | append-dtb | uImage none
+ KERNEL_NAME := zImage
+ TPLINK_BOARD_NAME :=
+ IMAGES := factory.bin sysupgrade.bin
+diff --git a/target/linux/ipq806x/patches-4.4/802-ARM-qcom-add-TPLink-C2600-device-tree.patch b/target/linux/ipq806x/patches-4.4/802-ARM-qcom-add-TPLink-C2600-device-tree.patch
+new file mode 100644
+index 0000000..8952f33
+--- /dev/null
++++ b/target/linux/ipq806x/patches-4.4/802-ARM-qcom-add-TPLink-C2600-device-tree.patch
+@@ -0,0 +1,425 @@
++--- a/arch/arm/boot/dts/Makefile
+++++ b/arch/arm/boot/dts/Makefile
++@@ -506,6 +506,7 @@
++ qcom-apq8084-ifc6540.dtb \
++ qcom-apq8084-mtp.dtb \
++ qcom-ipq8064-ap148.dtb \
+++ qcom-ipq8064-c2600.dtb \
++ qcom-ipq8064-db149.dtb \
++ qcom-ipq8064-r7500.dtb \
++ qcom-ipq8064-d7800.dtb \
++--- /dev/null
+++++ b/arch/arm/boot/dts/qcom-ipq8064-c2600.dts
++@@ -0,0 +1,412 @@
+++#include "qcom-ipq8064-v1.0.dtsi"
+++#include <dt-bindings/input/input.h>
+++
+++/ {
+++ model = "TP-Link Archer C2600";
+++ compatible = "tplink,c2600", "qcom,ipq8064";
+++
+++ memory@0 {
+++ reg = <0x42000000 0x1e000000>;
+++ device_type = "memory";
+++ };
+++
+++ reserved-memory {
+++ #address-cells = <1>;
+++ #size-cells = <1>;
+++ ranges;
+++ rsvd@41200000 {
+++ reg = <0x41200000 0x300000>;
+++ no-map;
+++ };
+++ };
+++
+++ aliases {
+++ serial0 = &uart4;
+++ mdio-gpio0 = &mdio0;
+++ };
+++
+++ chosen {
+++ linux,stdout-path = "serial0:115200n8";
+++ };
+++
+++ soc {
+++ pinmux@800000 {
+++ i2c4_pins: i2c4_pinmux {
+++ pins = "gpio12", "gpio13";
+++ function = "gsbi4";
+++ bias-disable;
+++ };
+++
+++ spi_pins: spi_pins {
+++ mux {
+++ pins = "gpio18", "gpio19", "gpio21";
+++ function = "gsbi5";
+++ drive-strength = <10>;
+++ bias-none;
+++ };
+++ };
+++
+++ nand_pins: nand_pins {
+++ mux {
+++ pins = "gpio34", "gpio35", "gpio36",
+++ "gpio37", "gpio38", "gpio39",
+++ "gpio40", "gpio41", "gpio42",
+++ "gpio43", "gpio44", "gpio45",
+++ "gpio46", "gpio47";
+++ function = "nand";
+++ drive-strength = <10>;
+++ bias-disable;
+++ };
+++
+++ pullups {
+++ pins = "gpio39";
+++ bias-pull-up;
+++ };
+++
+++ hold {
+++ pins = "gpio40", "gpio41", "gpio42",
+++ "gpio43", "gpio44", "gpio45",
+++ "gpio46", "gpio47";
+++ bias-bus-hold;
+++ };
+++ };
+++
+++ mdio0_pins: mdio0_pins {
+++ mux {
+++ pins = "gpio0", "gpio1";
+++ function = "gpio";
+++ drive-strength = <8>;
+++ bias-disable;
+++ };
+++ };
+++
+++ rgmii2_pins: rgmii2_pins {
+++ mux {
+++ pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
+++ "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
+++ function = "rgmii2";
+++ drive-strength = <8>;
+++ bias-disable;
+++ };
+++ };
+++ };
+++
+++ gsbi@16300000 {
+++ qcom,mode = <GSBI_PROT_I2C_UART>;
+++ status = "ok";
+++ serial@16340000 {
+++ status = "ok";
+++ };
+++ /*
+++ * The i2c device on gsbi4 should not be enabled.
+++ * On ipq806x designs gsbi4 i2c is meant for exclusive
+++ * RPM usage. Turning this on in kernel manifests as
+++ * i2c failure for the RPM.
+++ */
+++ };
+++
+++ gsbi5: gsbi@1a200000 {
+++ qcom,mode = <GSBI_PROT_SPI>;
+++ status = "ok";
+++
+++ spi4: spi@1a280000 {
+++ status = "ok";
+++ spi-max-frequency = <50000000>;
+++
+++ pinctrl-0 = <&spi_pins>;
+++ pinctrl-names = "default";
+++
+++ cs-gpios = <&qcom_pinmux 20 0>;
+++
+++ flash: m25p80@0 {
+++ compatible = "s25fl256s1";
+++ #address-cells = <1>;
+++ #size-cells = <1>;
+++ spi-max-frequency = <50000000>;
+++ reg = <0>;
+++
+++ SBL1@0 {
+++ label = "SBL1";
+++ reg = <0x0 0x20000>;
+++ read-only;
+++ };
+++ MIBIB@20000 {
+++ label = "MIBIB";
+++ reg = <0x20000 0x20000>;
+++ read-only;
+++ };
+++ SBL2@40000 {
+++ label = "SBL2";
+++ reg = <0x40000 0x20000>;
+++ read-only;
+++ };
+++ SBL3@60000 {
+++ label = "SBL3";
+++ reg = <0x60000 0x30000>;
+++ read-only;
+++ };
+++ DDRCONFIG@90000 {
+++ label = "DDRCONFIG";
+++ reg = <0x90000 0x10000>;
+++ read-only;
+++ };
+++ SSD@a0000 {
+++ label = "SSD";
+++ reg = <0xa0000 0x10000>;
+++ read-only;
+++ };
+++ TZ@b0000 {
+++ label = "TZ";
+++ reg = <0xb0000 0x30000>;
+++ read-only;
+++ };
+++ RPM@e0000 {
+++ label = "RPM";
+++ reg = <0xe0000 0x20000>;
+++ read-only;
+++ };
+++ fs-uboot@100000 {
+++ label = "fs-uboot";
+++ reg = <0x100000 0x70000>;
+++ read-only;
+++ };
+++ uboot-env@170000 {
+++ label = "uboot-env";
+++ reg = <0x170000 0x40000>;
+++ read-only;
+++ };
+++ radio@1b0000 {
+++ label = "radio";
+++ reg = <0x1b0000 0x40000>;
+++ read-only;
+++ };
+++ os-image@1f0000 {
+++ label = "os-image";
+++ reg = <0x1f0000 0x200000>;
+++ };
+++ rootfs@3f0000 {
+++ label = "rootfs";
+++ reg = <0x3f0000 0x1b00000>;
+++ };
+++ defaultmac: default-mac@1ef0000 {
+++ label = "default-mac";
+++ reg = <0x1ef0000 0x00200>;
+++ read-only;
+++ };
+++ pin@1ef0200 {
+++ label = "pin";
+++ reg = <0x1ef0200 0x00200>;
+++ read-only;
+++ };
+++ product-info@1ef0400 {
+++ label = "product-info";
+++ reg = <0x1ef0400 0x0fc00>;
+++ read-only;
+++ };
+++ partition-table@1f00000 {
+++ label = "partition-table";
+++ reg = <0x1f00000 0x10000>;
+++ read-only;
+++ };
+++ soft-version@1f10000 {
+++ label = "soft-version";
+++ reg = <0x1f10000 0x10000>;
+++ read-only;
+++ };
+++ support-list@1f20000 {
+++ label = "support-list";
+++ reg = <0x1f20000 0x10000>;
+++ read-only;
+++ };
+++ profile@1f30000 {
+++ label = "profile";
+++ reg = <0x1f30000 0x10000>;
+++ read-only;
+++ };
+++ default-config@1f40000 {
+++ label = "default-config";
+++ reg = <0x1f40000 0x10000>;
+++ read-only;
+++ };
+++ user-config@1f50000 {
+++ label = "user-config";
+++ reg = <0x1f50000 0x40000>;
+++ read-only;
+++ };
+++ qos-db@1f90000 {
+++ label = "qos-db";
+++ reg = <0x1f90000 0x40000>;
+++ read-only;
+++ };
+++ usb-config@1fd0000 {
+++ label = "usb-config";
+++ reg = <0x1fd0000 0x10000>;
+++ read-only;
+++ };
+++ log@1fe0000 {
+++ label = "log";
+++ reg = <0x1fe0000 0x20000>;
+++ read-only;
+++ };
+++ };
+++ };
+++ };
+++
+++ phy@100f8800 { /* USB3 port 1 HS phy */
+++ status = "ok";
+++ };
+++
+++ phy@100f8830 { /* USB3 port 1 SS phy */
+++ status = "ok";
+++ };
+++
+++ phy@110f8800 { /* USB3 port 0 HS phy */
+++ status = "ok";
+++ };
+++
+++ phy@110f8830 { /* USB3 port 0 SS phy */
+++ status = "ok";
+++ };
+++
+++ usb30@0 {
+++ status = "ok";
+++ };
+++
+++ usb30@1 {
+++ status = "ok";
+++ };
+++
+++ pcie0: pci@1b500000 {
+++ status = "ok";
+++ phy-tx0-term-offset = <7>;
+++ };
+++
+++ pcie1: pci@1b700000 {
+++ status = "ok";
+++ phy-tx0-term-offset = <7>;
+++ };
+++
+++ mdio0: mdio {
+++ compatible = "virtual,mdio-gpio";
+++ #address-cells = <1>;
+++ #size-cells = <0>;
+++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
+++ pinctrl-0 = <&mdio0_pins>;
+++ pinctrl-names = "default";
+++
+++ phy0: ethernet-phy@0 {
+++ device_type = "ethernet-phy";
+++ reg = <0>;
+++ qca,ar8327-initvals = <
+++ 0x00004 0x7600000 /* PAD0_MODE */
+++ 0x00008 0x1000000 /* PAD5_MODE */
+++ 0x0000c 0x80 /* PAD6_MODE */
+++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
+++ 0x000e0 0xc74164de /* SGMII_CTRL */
+++ 0x0007c 0x4e /* PORT0_STATUS */
+++ 0x00094 0x4e /* PORT6_STATUS */
+++ >;
+++ };
+++
+++ phy4: ethernet-phy@4 {
+++ device_type = "ethernet-phy";
+++ reg = <4>;
+++ };
+++ };
+++
+++ gmac1: ethernet@37200000 {
+++ status = "ok";
+++ phy-mode = "rgmii";
+++ qcom,id = <1>;
+++
+++ pinctrl-0 = <&rgmii2_pins>;
+++ pinctrl-names = "default";
+++
+++ mtd-mac-address = <&defaultmac 0x8>;
+++ mtd-mac-address-increment = <1>;
+++
+++ fixed-link {
+++ speed = <1000>;
+++ full-duplex;
+++ };
+++ };
+++
+++ gmac2: ethernet@37400000 {
+++ status = "ok";
+++ phy-mode = "sgmii";
+++ qcom,id = <2>;
+++
+++ mtd-mac-address = <&defaultmac 0x8>;
+++
+++ fixed-link {
+++ speed = <1000>;
+++ full-duplex;
+++ };
+++ };
+++ };
+++
+++ gpio-keys {
+++ compatible = "gpio-keys";
+++
+++ wifi {
+++ label = "wifi";
+++ gpios = <&qcom_pinmux 49 1>;
+++ linux,code = <KEY_WLAN>;
+++ };
+++
+++ reset {
+++ label = "reset";
+++ gpios = <&qcom_pinmux 64 1>;
+++ linux,code = <KEY_RESTART>;
+++ };
+++
+++ wps {
+++ label = "wps";
+++ gpios = <&qcom_pinmux 65 1>;
+++ linux,code = <KEY_WPS_BUTTON>;
+++ };
+++ ledgeneral {
+++ label = "ledgeneral";
+++ gpios = <&qcom_pinmux 16 1>;
+++ linux,code = <KEY_DOLLAR>;
+++ };
+++ };
+++
+++ gpio-leds {
+++ compatible = "gpio-leds";
+++
+++ lan {
+++ label = "lan:blue";
+++ gpios = <&qcom_pinmux 6 0>;
+++ };
+++ usb4 {
+++ label = "usb_4:blue";
+++ gpios = <&qcom_pinmux 7 0>;
+++ };
+++ usb2 {
+++ label = "usb_2:blue";
+++ gpios = <&qcom_pinmux 8 0>;
+++ };
+++ wps {
+++ label = "wps:blue";
+++ gpios = <&qcom_pinmux 9 0>;
+++ };
+++ wan_blue {
+++ label = "wan:blue";
+++ gpios = <&qcom_pinmux 33 1>;
+++ };
+++ status {
+++ label = "status:blue";
+++ gpios = <&qcom_pinmux 53 0>;
+++ default-state = "on";
+++ };
+++ ledgnr {
+++ label = "ledgnr:blue";
+++ gpios = <&qcom_pinmux 66 0>;
+++ };
+++ };
+++};
+++
+++&adm_dma {
+++ status = "ok";
+++};
--- /dev/null
+CONFIG_ALIGNMENT_TRAP=y
+# CONFIG_AMBA_PL08X is not set
+# CONFIG_APM_EMULATION is not set
+CONFIG_APQ_GCC_8084=y
+CONFIG_APQ_MMCC_8084=y
+CONFIG_AR8216_PHY=y
+CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
+CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
+CONFIG_ARCH_HAS_SG_CHAIN=y
+CONFIG_ARCH_HAS_TICK_BROADCAST=y
+CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MSM8960=y
+CONFIG_ARCH_MSM8974=y
+CONFIG_ARCH_MSM8X60=y
+CONFIG_ARCH_MULTIPLATFORM=y
+# CONFIG_ARCH_MULTI_CPU_AUTO is not set
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_MULTI_V7=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_QCOM=y
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+CONFIG_ARM=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+# CONFIG_ARM_ATAG_DTB_COMPAT is not set
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+# CONFIG_ARM_KIRKWOOD_CPUFREQ is not set
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
+# CONFIG_ARM_LPAE is not set
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_QCOM_CPUFREQ=y
+# CONFIG_ARM_SP805_WATCHDOG is not set
+CONFIG_ARM_THUMB=y
+# CONFIG_ARM_THUMBEE is not set
+CONFIG_ARM_UNWIND=y
+CONFIG_ARM_VIRT_EXT=y
+CONFIG_AT803X_PHY=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+CONFIG_BOUNCE=y
+CONFIG_BUILD_BIN2C=y
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_CLEANCACHE=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLKSRC_OF=y
+CONFIG_CLKSRC_QCOM=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_QCOM=y
+CONFIG_COMPACTION=y
+CONFIG_COREDUMP=y
+# CONFIG_CPUFREQ_DT is not set
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+# CONFIG_CPU_BPREDICT_DISABLE is not set
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_FREQ=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_STAT=y
+# CONFIG_CPU_FREQ_STAT_DETAILS is not set
+CONFIG_CPU_HAS_ASID=y
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+# CONFIG_CPU_THERMAL is not set
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_V7=y
+CONFIG_CRC16=y
+# CONFIG_CRC32_SARWATE is not set
+CONFIG_CRC32_SLICEBY8=y
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_CRYPTO_DEFLATE=y
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_RNG2=y
+# CONFIG_CRYPTO_SHA1_ARM_NEON is not set
+# CONFIG_CRYPTO_SHA512_ARM_NEON is not set
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CRYPTO_XZ=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_GPIO=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DEBUG_PREEMPT=y
+# CONFIG_DEBUG_UART_8250 is not set
+# CONFIG_DEBUG_UART_PL01X is not set
+# CONFIG_DEBUG_USER is not set
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DTC=y
+# CONFIG_DWMAC_GENERIC is not set
+CONFIG_DWMAC_IPQ806X=y
+# CONFIG_DWMAC_LPC18XX is not set
+# CONFIG_DWMAC_MESON is not set
+# CONFIG_DWMAC_ROCKCHIP is not set
+# CONFIG_DWMAC_SOCFPGA is not set
+# CONFIG_DWMAC_STI is not set
+# CONFIG_DWMAC_SUNXI is not set
+# CONFIG_DW_DMAC_CORE is not set
+# CONFIG_DW_DMAC_PCI is not set
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_ETHERNET_PACKET_MANGLE=y
+CONFIG_FIXED_PHY=y
+CONFIG_FREEZER=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_GENERIC_CPUFREQ_KRAIT=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_DEVRES=y
+# CONFIG_GPIO_MSM_V2 is not set
+CONFIG_GPIO_SYSFS=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_HAVE_ARCH_AUDITSYSCALL=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_BPF_JIT=y
+CONFIG_HAVE_CC_STACKPROTECTOR=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_HW_BREAKPOINT=y
+CONFIG_HAVE_IDE=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZ4=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PERF_REGS=y
+CONFIG_HAVE_PERF_USER_STACK_DUMP=y
+CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_SMP=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_UID16=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HIGHMEM=y
+CONFIG_HIGHPTE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HWMON=y
+CONFIG_HWSPINLOCK=y
+CONFIG_HWSPINLOCK_QCOM=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_MSM=y
+CONFIG_HZ_FIXED=0
+CONFIG_I2C=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_COMPAT=y
+CONFIG_I2C_HELPER_AUTO=y
+CONFIG_I2C_QUP=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IOMMU_API=y
+CONFIG_IOMMU_HELPER=y
+CONFIG_IOMMU_PGTABLES_L2=y
+CONFIG_IOMMU_SUPPORT=y
+CONFIG_IPQ_GCC_806X=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_KPSS_XCC=y
+CONFIG_KRAITCC=y
+CONFIG_KRAIT_CLOCKS=y
+CONFIG_KRAIT_L2_ACCESSORS=y
+# CONFIG_LEDS_REGULATOR is not set
+CONFIG_LIBFDT=y
+CONFIG_LOCKUP_DETECTOR=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MDIO_BITBANG=y
+CONFIG_MDIO_BOARDINFO=y
+CONFIG_MDIO_GPIO=y
+CONFIG_MFD_QCOM_RPM=y
+# CONFIG_MFD_SPMI_PMIC is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MIGHT_HAVE_PCI=y
+CONFIG_MIGRATION=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MSM_GCC_8660=y
+CONFIG_MSM_GCC_8960=y
+CONFIG_MSM_GCC_8974=y
+CONFIG_MSM_IOMMU=y
+CONFIG_MSM_MMCC_8960=y
+CONFIG_MSM_MMCC_8974=y
+CONFIG_MTD_CMDLINE_PARTS=y
+# CONFIG_MTD_IMPA7 is not set
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_M25P80=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_QCOM=y
+CONFIG_MTD_QCOM_SMEM_PARTS=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_FIT_FW=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+# CONFIG_MTD_UBI_FASTMAP is not set
+# CONFIG_MTD_UBI_GLUEBI is not set
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_MULTI_IRQ_HANDLER=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEON=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NET_VENDOR_WIZNET=y
+CONFIG_NO_BOOTMEM=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_ADDRESS_PCI=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IOMMU=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_MTD=y
+CONFIG_OF_NET=y
+CONFIG_OF_PCI=y
+CONFIG_OF_PCI_IRQ=y
+CONFIG_OF_RESERVED_MEM=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_QCOM=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_MSI=y
+CONFIG_PERF_EVENTS=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PHYLIB=y
+# CONFIG_PHY_QCOM_APQ8064_SATA is not set
+CONFIG_PHY_QCOM_IPQ806X_SATA=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_APQ8064=y
+# CONFIG_PINCTRL_APQ8084 is not set
+CONFIG_PINCTRL_IPQ8064=y
+CONFIG_PINCTRL_MSM=y
+# CONFIG_PINCTRL_MSM8960 is not set
+CONFIG_PINCTRL_MSM8X74=y
+# CONFIG_PL330_DMA is not set
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POWER_RESET=y
+# CONFIG_POWER_RESET_BRCMSTB is not set
+# CONFIG_POWER_RESET_GPIO is not set
+# CONFIG_POWER_RESET_GPIO_RESTART is not set
+# CONFIG_POWER_RESET_LTC2952 is not set
+CONFIG_POWER_RESET_MSM=y
+# CONFIG_POWER_RESET_SYSCON is not set
+CONFIG_POWER_SUPPLY=y
+CONFIG_PPS=y
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_COUNT=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_RCU=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_QCOM_ADM=y
+CONFIG_QCOM_BAM_DMA=y
+CONFIG_QCOM_GSBI=y
+CONFIG_QCOM_HFPLL=y
+CONFIG_QCOM_SCM=y
+CONFIG_QCOM_SMEM=y
+CONFIG_QCOM_WDT=y
+CONFIG_RAS=y
+# CONFIG_RCU_BOOST is not set
+CONFIG_RCU_CPU_STALL_TIMEOUT=21
+CONFIG_RCU_CPU_STALL_VERBOSE=y
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_RD_GZIP=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+# CONFIG_REGULATOR_DEBUG is not set
+CONFIG_REGULATOR_QCOM_RPM=y
+# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_DRV_CMOS is not set
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_SCHED_HRTICK=y
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SERIAL_AMBA_PL010 is not set
+# CONFIG_SERIAL_AMBA_PL011 is not set
+CONFIG_SERIAL_MSM=y
+CONFIG_SERIAL_MSM_CONSOLE=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+CONFIG_SLUB_CPU_PARTIAL=y
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_QUP=y
+CONFIG_SPMI=y
+CONFIG_SPMI_MSM_PMIC_ARB=y
+CONFIG_STMMAC_ETH=y
+CONFIG_STMMAC_PLATFORM=y
+CONFIG_STOP_MACHINE=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWCONFIG=y
+CONFIG_SWIOTLB=y
+CONFIG_SWP_EMULATE=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_THERMAL=y
+# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
+# CONFIG_THERMAL_EMULATION is not set
+# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
+CONFIG_THERMAL_GOV_STEP_WISE=y
+# CONFIG_THERMAL_GOV_USER_SPACE is not set
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_OF=y
+# CONFIG_THUMB2_KERNEL is not set
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_STATS=y
+CONFIG_TREE_PREEMPT_RCU=y
+CONFIG_UBIFS_FS=y
+# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
+CONFIG_UBIFS_FS_LZO=y
+CONFIG_UBIFS_FS_XZ=y
+CONFIG_UBIFS_FS_ZLIB=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UID16=y
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNINLINE_SPIN_UNLOCK=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USE_OF=y
+CONFIG_VECTORS_BASE=0xffff0000
+# CONFIG_VFIO is not set
+CONFIG_VFP=y
+CONFIG_VFPv3=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_WATCHDOG_CORE=y
+# CONFIG_WIZNET_W5100 is not set
+# CONFIG_WIZNET_W5300 is not set
+# CONFIG_WL_TI is not set
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA_FLAG=0
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: spi: qup: Add DMA capabilities
+From: Andy Gross <agross@codeaurora.org>
+X-Patchwork-Id: 4432401
+Message-Id: <1403816781-31008-1-git-send-email-agross@codeaurora.org>
+To: Mark Brown <broonie@kernel.org>
+Cc: linux-spi@vger.kernel.org, Sagar Dharia <sdharia@codeaurora.org>,
+ Daniel Sneddon <dsneddon@codeaurora.org>,
+ Bjorn Andersson <bjorn.andersson@sonymobile.com>,
+ "Ivan T. Ivanov" <iivanov@mm-sol.com>,
+ linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ linux-arm-msm@vger.kernel.org, Andy Gross <agross@codeaurora.org>
+Date: Thu, 26 Jun 2014 16:06:21 -0500
+
+This patch adds DMA capabilities to the spi-qup driver. If DMA channels are
+present, the QUP will use DMA instead of block mode for transfers to/from SPI
+peripherals for transactions larger than the length of a block.
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+
+---
+.../devicetree/bindings/spi/qcom,spi-qup.txt | 10 +
+ drivers/spi/spi-qup.c | 361 ++++++++++++++++++--
+ 2 files changed, 350 insertions(+), 21 deletions(-)
+
+--- a/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
++++ b/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
+@@ -27,6 +27,11 @@ Optional properties:
+ - spi-max-frequency: Specifies maximum SPI clock frequency,
+ Units - Hz. Definition as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt
++- dmas : Two DMA channel specifiers following the convention outlined
++ in bindings/dma/dma.txt
++- dma-names: Names for the dma channels, if present. There must be at
++ least one channel named "tx" for transmit and named "rx" for
++ receive.
+ - num-cs: total number of chipselects
+ - cs-gpios: should specify GPIOs used for chipselects.
+ The gpios will be referred to as reg = <index> in the SPI child
+@@ -51,6 +56,10 @@ Example:
+ clocks = <&gcc GCC_BLSP2_QUP2_SPI_APPS_CLK>, <&gcc GCC_BLSP2_AHB_CLK>;
+ clock-names = "core", "iface";
+
++ dmas = <&blsp2_bam 2>,
++ <&blsp2_bam 3>;
++ dma-names = "rx", "tx";
++
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi8_default>;
+
+--- a/drivers/spi/spi-qup.c
++++ b/drivers/spi/spi-qup.c
+@@ -22,6 +22,8 @@
+ #include <linux/platform_device.h>
+ #include <linux/pm_runtime.h>
+ #include <linux/spi/spi.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
+
+ #define QUP_CONFIG 0x0000
+ #define QUP_STATE 0x0004
+@@ -116,6 +118,8 @@
+
+ #define SPI_NUM_CHIPSELECTS 4
+
++#define SPI_MAX_XFER (SZ_64K - 64)
++
+ /* high speed mode is when bus rate is greater then 26MHz */
+ #define SPI_HS_MIN_RATE 26000000
+ #define SPI_MAX_RATE 50000000
+@@ -143,6 +147,17 @@ struct spi_qup {
+ int tx_bytes;
+ int rx_bytes;
+ int qup_v1;
++
++ int use_dma;
++
++ struct dma_chan *rx_chan;
++ struct dma_slave_config rx_conf;
++ struct dma_chan *tx_chan;
++ struct dma_slave_config tx_conf;
++ dma_addr_t rx_dma;
++ dma_addr_t tx_dma;
++ void *dummy;
++ atomic_t dma_outstanding;
+ };
+
+
+@@ -266,6 +281,221 @@ static void spi_qup_fifo_write(struct sp
+ }
+ }
+
++static void qup_dma_callback(void *data)
++{
++ struct spi_qup *controller = data;
++
++ if (atomic_dec_and_test(&controller->dma_outstanding))
++ complete(&controller->done);
++}
++
++static int spi_qup_do_dma(struct spi_qup *controller, struct spi_transfer *xfer)
++{
++ struct dma_async_tx_descriptor *rxd, *txd;
++ dma_cookie_t rx_cookie, tx_cookie;
++ u32 xfer_len, rx_align = 0, tx_align = 0, n_words;
++ struct scatterlist tx_sg[2], rx_sg[2];
++ int ret = 0;
++ u32 bytes_to_xfer = xfer->len;
++ u32 offset = 0;
++ u32 rx_nents = 0, tx_nents = 0;
++ dma_addr_t rx_dma = 0, tx_dma = 0, rx_dummy_dma = 0, tx_dummy_dma = 0;
++
++
++ if (xfer->rx_buf) {
++ rx_dma = dma_map_single(controller->dev, xfer->rx_buf,
++ xfer->len, DMA_FROM_DEVICE);
++
++ if (dma_mapping_error(controller->dev, rx_dma)) {
++ ret = -ENOMEM;
++ return ret;
++ }
++
++ /* check to see if we need dummy buffer for leftover bytes */
++ rx_align = xfer->len % controller->in_blk_sz;
++ if (rx_align) {
++ rx_dummy_dma = dma_map_single(controller->dev,
++ controller->dummy, controller->in_fifo_sz,
++ DMA_FROM_DEVICE);
++
++ if (dma_mapping_error(controller->dev, rx_dummy_dma)) {
++ ret = -ENOMEM;
++ goto err_map_rx_dummy;
++ }
++ }
++ }
++
++ if (xfer->tx_buf) {
++ tx_dma = dma_map_single(controller->dev,
++ (void *)xfer->tx_buf, xfer->len, DMA_TO_DEVICE);
++
++ if (dma_mapping_error(controller->dev, tx_dma)) {
++ ret = -ENOMEM;
++ goto err_map_tx;
++ }
++
++ /* check to see if we need dummy buffer for leftover bytes */
++ tx_align = xfer->len % controller->out_blk_sz;
++ if (tx_align) {
++ memcpy(controller->dummy + SZ_1K,
++ xfer->tx_buf + xfer->len - tx_align,
++ tx_align);
++ memset(controller->dummy + SZ_1K + tx_align, 0,
++ controller->out_blk_sz - tx_align);
++
++ tx_dummy_dma = dma_map_single(controller->dev,
++ controller->dummy + SZ_1K,
++ controller->out_blk_sz, DMA_TO_DEVICE);
++
++ if (dma_mapping_error(controller->dev, tx_dummy_dma)) {
++ ret = -ENOMEM;
++ goto err_map_tx_dummy;
++ }
++ }
++ }
++
++ atomic_set(&controller->dma_outstanding, 0);
++
++ while (bytes_to_xfer > 0) {
++ xfer_len = min_t(u32, bytes_to_xfer, SPI_MAX_XFER);
++ n_words = DIV_ROUND_UP(xfer_len, controller->w_size);
++
++ /* write out current word count to controller */
++ writel_relaxed(n_words, controller->base + QUP_MX_INPUT_CNT);
++ writel_relaxed(n_words, controller->base + QUP_MX_OUTPUT_CNT);
++
++ reinit_completion(&controller->done);
++
++ if (xfer->tx_buf) {
++ /* recalc align for each transaction */
++ tx_align = xfer_len % controller->out_blk_sz;
++
++ if (tx_align)
++ tx_nents = 2;
++ else
++ tx_nents = 1;
++
++ /* initialize scatterlists */
++ sg_init_table(tx_sg, tx_nents);
++ sg_dma_len(&tx_sg[0]) = xfer_len - tx_align;
++ sg_dma_address(&tx_sg[0]) = tx_dma + offset;
++
++ /* account for non block size transfer */
++ if (tx_align) {
++ sg_dma_len(&tx_sg[1]) = controller->out_blk_sz;
++ sg_dma_address(&tx_sg[1]) = tx_dummy_dma;
++ }
++
++ txd = dmaengine_prep_slave_sg(controller->tx_chan,
++ tx_sg, tx_nents, DMA_MEM_TO_DEV, 0);
++ if (!txd) {
++ ret = -ENOMEM;
++ goto err_unmap;
++ }
++
++ atomic_inc(&controller->dma_outstanding);
++
++ txd->callback = qup_dma_callback;
++ txd->callback_param = controller;
++
++ tx_cookie = dmaengine_submit(txd);
++
++ dma_async_issue_pending(controller->tx_chan);
++ }
++
++ if (xfer->rx_buf) {
++ /* recalc align for each transaction */
++ rx_align = xfer_len % controller->in_blk_sz;
++
++ if (rx_align)
++ rx_nents = 2;
++ else
++ rx_nents = 1;
++
++ /* initialize scatterlists */
++ sg_init_table(rx_sg, rx_nents);
++ sg_dma_address(&rx_sg[0]) = rx_dma + offset;
++ sg_dma_len(&rx_sg[0]) = xfer_len - rx_align;
++
++ /* account for non block size transfer */
++ if (rx_align) {
++ sg_dma_len(&rx_sg[1]) = controller->in_blk_sz;
++ sg_dma_address(&rx_sg[1]) = rx_dummy_dma;
++ }
++
++ rxd = dmaengine_prep_slave_sg(controller->rx_chan,
++ rx_sg, rx_nents, DMA_DEV_TO_MEM, 0);
++ if (!rxd) {
++ ret = -ENOMEM;
++ goto err_unmap;
++ }
++
++ atomic_inc(&controller->dma_outstanding);
++
++ rxd->callback = qup_dma_callback;
++ rxd->callback_param = controller;
++
++ rx_cookie = dmaengine_submit(rxd);
++
++ dma_async_issue_pending(controller->rx_chan);
++ }
++
++ if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
++ dev_warn(controller->dev, "cannot set EXECUTE state\n");
++ goto err_unmap;
++ }
++
++ if (!wait_for_completion_timeout(&controller->done,
++ msecs_to_jiffies(1000))) {
++ ret = -ETIMEDOUT;
++
++ /* clear out all the DMA transactions */
++ if (xfer->tx_buf)
++ dmaengine_terminate_all(controller->tx_chan);
++ if (xfer->rx_buf)
++ dmaengine_terminate_all(controller->rx_chan);
++
++ goto err_unmap;
++ }
++
++ if (rx_align)
++ memcpy(xfer->rx_buf + offset + xfer->len - rx_align,
++ controller->dummy, rx_align);
++
++ /* adjust remaining bytes to transfer */
++ bytes_to_xfer -= xfer_len;
++ offset += xfer_len;
++
++
++ /* reset mini-core state so we can program next transaction */
++ if (spi_qup_set_state(controller, QUP_STATE_RESET)) {
++ dev_err(controller->dev, "cannot set RESET state\n");
++ goto err_unmap;
++ }
++ }
++
++ ret = 0;
++
++err_unmap:
++ if (tx_align)
++ dma_unmap_single(controller->dev, tx_dummy_dma,
++ controller->out_fifo_sz, DMA_TO_DEVICE);
++err_map_tx_dummy:
++ if (xfer->tx_buf)
++ dma_unmap_single(controller->dev, tx_dma, xfer->len,
++ DMA_TO_DEVICE);
++err_map_tx:
++ if (rx_align)
++ dma_unmap_single(controller->dev, rx_dummy_dma,
++ controller->in_fifo_sz, DMA_FROM_DEVICE);
++err_map_rx_dummy:
++ if (xfer->rx_buf)
++ dma_unmap_single(controller->dev, rx_dma, xfer->len,
++ DMA_FROM_DEVICE);
++
++ return ret;
++}
++
+ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id)
+ {
+ struct spi_qup *controller = dev_id;
+@@ -315,11 +545,13 @@ static irqreturn_t spi_qup_qup_irq(int i
+ error = -EIO;
+ }
+
+- if (opflags & QUP_OP_IN_SERVICE_FLAG)
+- spi_qup_fifo_read(controller, xfer);
++ if (!controller->use_dma) {
++ if (opflags & QUP_OP_IN_SERVICE_FLAG)
++ spi_qup_fifo_read(controller, xfer);
+
+- if (opflags & QUP_OP_OUT_SERVICE_FLAG)
+- spi_qup_fifo_write(controller, xfer);
++ if (opflags & QUP_OP_OUT_SERVICE_FLAG)
++ spi_qup_fifo_write(controller, xfer);
++ }
+
+ spin_lock_irqsave(&controller->lock, flags);
+ controller->error = error;
+@@ -339,6 +571,8 @@ static int spi_qup_io_config(struct spi_
+ struct spi_qup *controller = spi_master_get_devdata(spi->master);
+ u32 config, iomode, mode;
+ int ret, n_words, w_size;
++ size_t dma_align = dma_get_cache_alignment();
++ u32 dma_available = 0;
+
+ if (spi->mode & SPI_LOOP && xfer->len > controller->in_fifo_sz) {
+ dev_err(controller->dev, "too big size for loopback %d > %d\n",
+@@ -367,6 +601,11 @@ static int spi_qup_io_config(struct spi_
+ n_words = xfer->len / w_size;
+ controller->w_size = w_size;
+
++ if (controller->rx_chan &&
++ IS_ALIGNED((size_t)xfer->tx_buf, dma_align) &&
++ IS_ALIGNED((size_t)xfer->rx_buf, dma_align))
++ dma_available = 1;
++
+ if (n_words <= (controller->in_fifo_sz / sizeof(u32))) {
+ mode = QUP_IO_M_MODE_FIFO;
+ writel_relaxed(n_words, controller->base + QUP_MX_READ_CNT);
+@@ -374,19 +613,31 @@ static int spi_qup_io_config(struct spi_
+ /* must be zero for FIFO */
+ writel_relaxed(0, controller->base + QUP_MX_INPUT_CNT);
+ writel_relaxed(0, controller->base + QUP_MX_OUTPUT_CNT);
+- } else {
++ controller->use_dma = 0;
++ } else if (!dma_available) {
+ mode = QUP_IO_M_MODE_BLOCK;
+ writel_relaxed(n_words, controller->base + QUP_MX_INPUT_CNT);
+ writel_relaxed(n_words, controller->base + QUP_MX_OUTPUT_CNT);
+ /* must be zero for BLOCK and BAM */
+ writel_relaxed(0, controller->base + QUP_MX_READ_CNT);
+ writel_relaxed(0, controller->base + QUP_MX_WRITE_CNT);
++ controller->use_dma = 0;
++ } else {
++ mode = QUP_IO_M_MODE_DMOV;
++ writel_relaxed(0, controller->base + QUP_MX_READ_CNT);
++ writel_relaxed(0, controller->base + QUP_MX_WRITE_CNT);
++ controller->use_dma = 1;
+ }
+
+ iomode = readl_relaxed(controller->base + QUP_IO_M_MODES);
+ /* Set input and output transfer mode */
+ iomode &= ~(QUP_IO_M_INPUT_MODE_MASK | QUP_IO_M_OUTPUT_MODE_MASK);
+- iomode &= ~(QUP_IO_M_PACK_EN | QUP_IO_M_UNPACK_EN);
++
++ if (!controller->use_dma)
++ iomode &= ~(QUP_IO_M_PACK_EN | QUP_IO_M_UNPACK_EN);
++ else
++ iomode |= QUP_IO_M_PACK_EN | QUP_IO_M_UNPACK_EN;
++
+ iomode |= (mode << QUP_IO_M_OUTPUT_MODE_MASK_SHIFT);
+ iomode |= (mode << QUP_IO_M_INPUT_MODE_MASK_SHIFT);
+
+@@ -419,6 +670,14 @@ static int spi_qup_io_config(struct spi_
+ config &= ~(QUP_CONFIG_NO_INPUT | QUP_CONFIG_NO_OUTPUT | QUP_CONFIG_N);
+ config |= xfer->bits_per_word - 1;
+ config |= QUP_CONFIG_SPI_MODE;
++
++ if (controller->use_dma) {
++ if (!xfer->tx_buf)
++ config |= QUP_CONFIG_NO_OUTPUT;
++ if (!xfer->rx_buf)
++ config |= QUP_CONFIG_NO_INPUT;
++ }
++
+ writel_relaxed(config, controller->base + QUP_CONFIG);
+
+ /* only write to OPERATIONAL_MASK when register is present */
+@@ -452,25 +711,29 @@ static int spi_qup_transfer_one(struct s
+ controller->tx_bytes = 0;
+ spin_unlock_irqrestore(&controller->lock, flags);
+
+- if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
+- dev_warn(controller->dev, "cannot set RUN state\n");
+- goto exit;
+- }
++ if (controller->use_dma) {
++ ret = spi_qup_do_dma(controller, xfer);
++ } else {
++ if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
++ dev_warn(controller->dev, "cannot set RUN state\n");
++ goto exit;
++ }
+
+- if (spi_qup_set_state(controller, QUP_STATE_PAUSE)) {
+- dev_warn(controller->dev, "cannot set PAUSE state\n");
+- goto exit;
+- }
++ if (spi_qup_set_state(controller, QUP_STATE_PAUSE)) {
++ dev_warn(controller->dev, "cannot set PAUSE state\n");
++ goto exit;
++ }
+
+- spi_qup_fifo_write(controller, xfer);
++ spi_qup_fifo_write(controller, xfer);
+
+- if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
+- dev_warn(controller->dev, "cannot set EXECUTE state\n");
+- goto exit;
+- }
++ if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
++ dev_warn(controller->dev, "cannot set EXECUTE state\n");
++ goto exit;
++ }
+
+- if (!wait_for_completion_timeout(&controller->done, timeout))
+- ret = -ETIMEDOUT;
++ if (!wait_for_completion_timeout(&controller->done, timeout))
++ ret = -ETIMEDOUT;
++ }
+ exit:
+ spi_qup_set_state(controller, QUP_STATE_RESET);
+ spin_lock_irqsave(&controller->lock, flags);
+@@ -554,6 +817,7 @@ static int spi_qup_probe(struct platform
+ master->transfer_one = spi_qup_transfer_one;
+ master->dev.of_node = pdev->dev.of_node;
+ master->auto_runtime_pm = true;
++ master->dma_alignment = dma_get_cache_alignment();
+
+ platform_set_drvdata(pdev, master);
+
+@@ -619,6 +883,56 @@ static int spi_qup_probe(struct platform
+ QUP_ERROR_INPUT_UNDER_RUN | QUP_ERROR_OUTPUT_UNDER_RUN,
+ base + QUP_ERROR_FLAGS_EN);
+
++ /* allocate dma resources, if available */
++ controller->rx_chan = dma_request_slave_channel(&pdev->dev, "rx");
++ if (controller->rx_chan) {
++ controller->tx_chan =
++ dma_request_slave_channel(&pdev->dev, "tx");
++
++ if (!controller->tx_chan) {
++ dev_err(&pdev->dev, "Failed to allocate dma tx chan");
++ dma_release_channel(controller->rx_chan);
++ }
++
++ /* set DMA parameters */
++ controller->rx_conf.device_fc = 1;
++ controller->rx_conf.src_addr = res->start + QUP_INPUT_FIFO;
++ controller->rx_conf.src_maxburst = controller->in_blk_sz;
++
++ controller->tx_conf.device_fc = 1;
++ controller->tx_conf.dst_addr = res->start + QUP_OUTPUT_FIFO;
++ controller->tx_conf.dst_maxburst = controller->out_blk_sz;
++
++ if (dmaengine_slave_config(controller->rx_chan,
++ &controller->rx_conf)) {
++ dev_err(&pdev->dev, "failed to configure RX channel\n");
++
++ dma_release_channel(controller->rx_chan);
++ dma_release_channel(controller->tx_chan);
++ controller->tx_chan = NULL;
++ controller->rx_chan = NULL;
++ } else if (dmaengine_slave_config(controller->tx_chan,
++ &controller->tx_conf)) {
++ dev_err(&pdev->dev, "failed to configure TX channel\n");
++
++ dma_release_channel(controller->rx_chan);
++ dma_release_channel(controller->tx_chan);
++ controller->tx_chan = NULL;
++ controller->rx_chan = NULL;
++ }
++
++ controller->dummy = devm_kmalloc(controller->dev, PAGE_SIZE,
++ GFP_KERNEL);
++
++ if (!controller->dummy) {
++ dma_release_channel(controller->rx_chan);
++ dma_release_channel(controller->tx_chan);
++ controller->tx_chan = NULL;
++ controller->rx_chan = NULL;
++ }
++ }
++
++
+ writel_relaxed(0, base + SPI_CONFIG);
+ writel_relaxed(SPI_IO_C_NO_TRI_STATE, base + SPI_IO_CONTROL);
+
+@@ -731,6 +1045,11 @@ static int spi_qup_remove(struct platfor
+ if (ret)
+ return ret;
+
++ if (controller->rx_chan)
++ dma_release_channel(controller->rx_chan);
++ if (controller->tx_chan)
++ dma_release_channel(controller->tx_chan);
++
+ clk_disable_unprepare(controller->cclk);
+ clk_disable_unprepare(controller->iclk);
+
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3] spi: qup: Fix incorrect block transfers
+From: Andy Gross <agross@codeaurora.org>
+X-Patchwork-Id: 5007321
+Message-Id: <1412112088-25928-1-git-send-email-agross@codeaurora.org>
+To: Mark Brown <broonie@kernel.org>
+Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org,
+ "Ivan T. Ivanov" <iivanov@mm-sol.com>,
+ Bjorn Andersson <bjorn.andersson@sonymobile.com>,
+ Kumar Gala <galak@codeaurora.org>, Andy Gross <agross@codeaurora.org>
+Date: Tue, 30 Sep 2014 16:21:28 -0500
+
+This patch fixes a number of errors with the QUP block transfer mode. Errors
+manifested themselves as input underruns, output overruns, and timed out
+transactions.
+
+The block mode does not require the priming that occurs in FIFO mode. At the
+moment that the QUP is placed into the RUN state, the QUP will immediately raise
+an interrupt if the request is a write. Therefore, there is no need to prime
+the pump.
+
+In addition, the block transfers require that whole blocks of data are
+read/written at a time. The last block of data that completes a transaction may
+contain less than a full blocks worth of data.
+
+Each block of data results in an input/output service interrupt accompanied with
+a input/output block flag set. Additional block reads/writes require clearing
+of the service flag. It is ok to check for additional blocks of data in the
+ISR, but you have to ack every block you transfer. Imbalanced acks result in
+early return from complete transactions with pending interrupts that still have
+to be ack'd. The next transaction can be affected by these interrupts.
+Transactions are deemed complete when the MAX_INPUT or MAX_OUTPUT flag are set.
+
+Changes from v2:
+- Added in additional completion check so that transaction done is not
+ prematurely signaled.
+- Fixed various review comments.
+
+Changes from v1:
+- Split out read/write block function.
+- Removed extraneous checks for transfer length
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+
+---
+drivers/spi/spi-qup.c | 201 ++++++++++++++++++++++++++++++++++++-------------
+ 1 file changed, 148 insertions(+), 53 deletions(-)
+
+--- a/drivers/spi/spi-qup.c
++++ b/drivers/spi/spi-qup.c
+@@ -82,6 +82,8 @@
+ #define QUP_IO_M_MODE_BAM 3
+
+ /* QUP_OPERATIONAL fields */
++#define QUP_OP_IN_BLOCK_READ_REQ BIT(13)
++#define QUP_OP_OUT_BLOCK_WRITE_REQ BIT(12)
+ #define QUP_OP_MAX_INPUT_DONE_FLAG BIT(11)
+ #define QUP_OP_MAX_OUTPUT_DONE_FLAG BIT(10)
+ #define QUP_OP_IN_SERVICE_FLAG BIT(9)
+@@ -147,6 +149,7 @@ struct spi_qup {
+ int tx_bytes;
+ int rx_bytes;
+ int qup_v1;
++ int mode;
+
+ int use_dma;
+
+@@ -213,30 +216,14 @@ static int spi_qup_set_state(struct spi_
+ return 0;
+ }
+
+-
+-static void spi_qup_fifo_read(struct spi_qup *controller,
+- struct spi_transfer *xfer)
++static void spi_qup_fill_read_buffer(struct spi_qup *controller,
++ struct spi_transfer *xfer, u32 data)
+ {
+ u8 *rx_buf = xfer->rx_buf;
+- u32 word, state;
+- int idx, shift, w_size;
+-
+- w_size = controller->w_size;
+-
+- while (controller->rx_bytes < xfer->len) {
+-
+- state = readl_relaxed(controller->base + QUP_OPERATIONAL);
+- if (0 == (state & QUP_OP_IN_FIFO_NOT_EMPTY))
+- break;
+-
+- word = readl_relaxed(controller->base + QUP_INPUT_FIFO);
+-
+- if (!rx_buf) {
+- controller->rx_bytes += w_size;
+- continue;
+- }
++ int idx, shift;
+
+- for (idx = 0; idx < w_size; idx++, controller->rx_bytes++) {
++ if (rx_buf)
++ for (idx = 0; idx < controller->w_size; idx++) {
+ /*
+ * The data format depends on bytes per SPI word:
+ * 4 bytes: 0x12345678
+@@ -244,41 +231,139 @@ static void spi_qup_fifo_read(struct spi
+ * 1 byte : 0x00000012
+ */
+ shift = BITS_PER_BYTE;
+- shift *= (w_size - idx - 1);
+- rx_buf[controller->rx_bytes] = word >> shift;
++ shift *= (controller->w_size - idx - 1);
++ rx_buf[controller->rx_bytes + idx] = data >> shift;
++ }
++
++ controller->rx_bytes += controller->w_size;
++}
++
++static void spi_qup_prepare_write_data(struct spi_qup *controller,
++ struct spi_transfer *xfer, u32 *data)
++{
++ const u8 *tx_buf = xfer->tx_buf;
++ u32 val;
++ int idx;
++
++ *data = 0;
++
++ if (tx_buf)
++ for (idx = 0; idx < controller->w_size; idx++) {
++ val = tx_buf[controller->tx_bytes + idx];
++ *data |= val << (BITS_PER_BYTE * (3 - idx));
+ }
++
++ controller->tx_bytes += controller->w_size;
++}
++
++static void spi_qup_fifo_read(struct spi_qup *controller,
++ struct spi_transfer *xfer)
++{
++ u32 data;
++
++ /* clear service request */
++ writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
++ controller->base + QUP_OPERATIONAL);
++
++ while (controller->rx_bytes < xfer->len) {
++ if (!(readl_relaxed(controller->base + QUP_OPERATIONAL) &
++ QUP_OP_IN_FIFO_NOT_EMPTY))
++ break;
++
++ data = readl_relaxed(controller->base + QUP_INPUT_FIFO);
++
++ spi_qup_fill_read_buffer(controller, xfer, data);
+ }
+ }
+
+ static void spi_qup_fifo_write(struct spi_qup *controller,
+- struct spi_transfer *xfer)
++ struct spi_transfer *xfer)
+ {
+- const u8 *tx_buf = xfer->tx_buf;
+- u32 word, state, data;
+- int idx, w_size;
++ u32 data;
+
+- w_size = controller->w_size;
++ /* clear service request */
++ writel_relaxed(QUP_OP_OUT_SERVICE_FLAG,
++ controller->base + QUP_OPERATIONAL);
+
+ while (controller->tx_bytes < xfer->len) {
+
+- state = readl_relaxed(controller->base + QUP_OPERATIONAL);
+- if (state & QUP_OP_OUT_FIFO_FULL)
++ if (readl_relaxed(controller->base + QUP_OPERATIONAL) &
++ QUP_OP_OUT_FIFO_FULL)
+ break;
+
+- word = 0;
+- for (idx = 0; idx < w_size; idx++, controller->tx_bytes++) {
++ spi_qup_prepare_write_data(controller, xfer, &data);
++ writel_relaxed(data, controller->base + QUP_OUTPUT_FIFO);
+
+- if (!tx_buf) {
+- controller->tx_bytes += w_size;
+- break;
+- }
++ }
++}
+
+- data = tx_buf[controller->tx_bytes];
+- word |= data << (BITS_PER_BYTE * (3 - idx));
+- }
++static void spi_qup_block_read(struct spi_qup *controller,
++ struct spi_transfer *xfer)
++{
++ u32 data;
++ u32 reads_per_blk = controller->in_blk_sz >> 2;
++ u32 num_words = (xfer->len - controller->rx_bytes) / controller->w_size;
++ int i;
++
++ do {
++ /* ACK by clearing service flag */
++ writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
++ controller->base + QUP_OPERATIONAL);
++
++ /* transfer up to a block size of data in a single pass */
++ for (i = 0; num_words && i < reads_per_blk; i++, num_words--) {
++
++ /* read data and fill up rx buffer */
++ data = readl_relaxed(controller->base + QUP_INPUT_FIFO);
++ spi_qup_fill_read_buffer(controller, xfer, data);
++ }
++
++ /* check to see if next block is ready */
++ if (!(readl_relaxed(controller->base + QUP_OPERATIONAL) &
++ QUP_OP_IN_BLOCK_READ_REQ))
++ break;
+
+- writel_relaxed(word, controller->base + QUP_OUTPUT_FIFO);
+- }
++ } while (num_words);
++
++ /*
++ * Due to extra stickiness of the QUP_OP_IN_SERVICE_FLAG during block
++ * reads, it has to be cleared again at the very end
++ */
++ if (readl_relaxed(controller->base + QUP_OPERATIONAL) &
++ QUP_OP_MAX_INPUT_DONE_FLAG)
++ writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
++ controller->base + QUP_OPERATIONAL);
++
++}
++
++static void spi_qup_block_write(struct spi_qup *controller,
++ struct spi_transfer *xfer)
++{
++ u32 data;
++ u32 writes_per_blk = controller->out_blk_sz >> 2;
++ u32 num_words = (xfer->len - controller->tx_bytes) / controller->w_size;
++ int i;
++
++ do {
++ /* ACK by clearing service flag */
++ writel_relaxed(QUP_OP_OUT_SERVICE_FLAG,
++ controller->base + QUP_OPERATIONAL);
++
++ /* transfer up to a block size of data in a single pass */
++ for (i = 0; num_words && i < writes_per_blk; i++, num_words--) {
++
++ /* swizzle the bytes for output and write out */
++ spi_qup_prepare_write_data(controller, xfer, &data);
++ writel_relaxed(data,
++ controller->base + QUP_OUTPUT_FIFO);
++ }
++
++ /* check to see if next block is ready */
++ if (!(readl_relaxed(controller->base + QUP_OPERATIONAL) &
++ QUP_OP_OUT_BLOCK_WRITE_REQ))
++ break;
++
++ } while (num_words);
+ }
+
+ static void qup_dma_callback(void *data)
+@@ -515,9 +600,9 @@ static irqreturn_t spi_qup_qup_irq(int i
+
+ writel_relaxed(qup_err, controller->base + QUP_ERROR_FLAGS);
+ writel_relaxed(spi_err, controller->base + SPI_ERROR_FLAGS);
+- writel_relaxed(opflags, controller->base + QUP_OPERATIONAL);
+
+ if (!xfer) {
++ writel_relaxed(opflags, controller->base + QUP_OPERATIONAL);
+ dev_err_ratelimited(controller->dev, "unexpected irq %08x %08x %08x\n",
+ qup_err, spi_err, opflags);
+ return IRQ_HANDLED;
+@@ -546,11 +631,19 @@ static irqreturn_t spi_qup_qup_irq(int i
+ }
+
+ if (!controller->use_dma) {
+- if (opflags & QUP_OP_IN_SERVICE_FLAG)
+- spi_qup_fifo_read(controller, xfer);
++ if (opflags & QUP_OP_IN_SERVICE_FLAG) {
++ if (opflags & QUP_OP_IN_BLOCK_READ_REQ)
++ spi_qup_block_read(controller, xfer);
++ else
++ spi_qup_fifo_read(controller, xfer);
++ }
+
+- if (opflags & QUP_OP_OUT_SERVICE_FLAG)
+- spi_qup_fifo_write(controller, xfer);
++ if (opflags & QUP_OP_OUT_SERVICE_FLAG) {
++ if (opflags & QUP_OP_OUT_BLOCK_WRITE_REQ)
++ spi_qup_block_write(controller, xfer);
++ else
++ spi_qup_fifo_write(controller, xfer);
++ }
+ }
+
+ spin_lock_irqsave(&controller->lock, flags);
+@@ -558,7 +651,8 @@ static irqreturn_t spi_qup_qup_irq(int i
+ controller->xfer = xfer;
+ spin_unlock_irqrestore(&controller->lock, flags);
+
+- if (controller->rx_bytes == xfer->len || error)
++ if ((controller->rx_bytes == xfer->len &&
++ (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error)
+ complete(&controller->done);
+
+ return IRQ_HANDLED;
+@@ -569,7 +663,7 @@ static irqreturn_t spi_qup_qup_irq(int i
+ static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer)
+ {
+ struct spi_qup *controller = spi_master_get_devdata(spi->master);
+- u32 config, iomode, mode;
++ u32 config, iomode;
+ int ret, n_words, w_size;
+ size_t dma_align = dma_get_cache_alignment();
+ u32 dma_available = 0;
+@@ -607,7 +701,7 @@ static int spi_qup_io_config(struct spi_
+ dma_available = 1;
+
+ if (n_words <= (controller->in_fifo_sz / sizeof(u32))) {
+- mode = QUP_IO_M_MODE_FIFO;
++ controller->mode = QUP_IO_M_MODE_FIFO;
+ writel_relaxed(n_words, controller->base + QUP_MX_READ_CNT);
+ writel_relaxed(n_words, controller->base + QUP_MX_WRITE_CNT);
+ /* must be zero for FIFO */
+@@ -615,7 +709,7 @@ static int spi_qup_io_config(struct spi_
+ writel_relaxed(0, controller->base + QUP_MX_OUTPUT_CNT);
+ controller->use_dma = 0;
+ } else if (!dma_available) {
+- mode = QUP_IO_M_MODE_BLOCK;
++ controller->mode = QUP_IO_M_MODE_BLOCK;
+ writel_relaxed(n_words, controller->base + QUP_MX_INPUT_CNT);
+ writel_relaxed(n_words, controller->base + QUP_MX_OUTPUT_CNT);
+ /* must be zero for BLOCK and BAM */
+@@ -623,7 +717,7 @@ static int spi_qup_io_config(struct spi_
+ writel_relaxed(0, controller->base + QUP_MX_WRITE_CNT);
+ controller->use_dma = 0;
+ } else {
+- mode = QUP_IO_M_MODE_DMOV;
++ controller->mode = QUP_IO_M_MODE_DMOV;
+ writel_relaxed(0, controller->base + QUP_MX_READ_CNT);
+ writel_relaxed(0, controller->base + QUP_MX_WRITE_CNT);
+ controller->use_dma = 1;
+@@ -638,8 +732,8 @@ static int spi_qup_io_config(struct spi_
+ else
+ iomode |= QUP_IO_M_PACK_EN | QUP_IO_M_UNPACK_EN;
+
+- iomode |= (mode << QUP_IO_M_OUTPUT_MODE_MASK_SHIFT);
+- iomode |= (mode << QUP_IO_M_INPUT_MODE_MASK_SHIFT);
++ iomode |= (controller->mode << QUP_IO_M_OUTPUT_MODE_MASK_SHIFT);
++ iomode |= (controller->mode << QUP_IO_M_INPUT_MODE_MASK_SHIFT);
+
+ writel_relaxed(iomode, controller->base + QUP_IO_M_MODES);
+
+@@ -724,7 +818,8 @@ static int spi_qup_transfer_one(struct s
+ goto exit;
+ }
+
+- spi_qup_fifo_write(controller, xfer);
++ if (controller->mode == QUP_IO_M_MODE_FIFO)
++ spi_qup_fifo_write(controller, xfer);
+
+ if (spi_qup_set_state(controller, QUP_STATE_RUN)) {
+ dev_warn(controller->dev, "cannot set EXECUTE state\n");
+@@ -741,6 +836,7 @@ exit:
+ if (!ret)
+ ret = controller->error;
+ spin_unlock_irqrestore(&controller->lock, flags);
++
+ return ret;
+ }
+
--- /dev/null
+From 4faba89e3ffbb1c5f6232651375b9b3212b50f02 Mon Sep 17 00:00:00 2001
+From: Andy Gross <agross@codeaurora.org>
+Date: Thu, 15 Jan 2015 17:56:02 -0800
+Subject: [PATCH] spi: qup: Ensure done detection
+
+This patch fixes an issue where a SPI transaction has completed, but the done
+condition is missed. This occurs because at the time of interrupt the
+MAX_INPUT_DONE_FLAG is not asserted. However, in the process of reading blocks
+of data from the FIFO, the last portion of data comes in.
+
+The opflags read at the beginning of the irq handler no longer matches the
+current opflag state. To get around this condition, the block read function
+should update the opflags so that done detection is correct after the return.
+
+Change-Id: If109e0eeb432f96000d765c4b34dbb2269f8093f
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+---
+ drivers/spi/spi-qup.c | 12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+--- a/drivers/spi/spi-qup.c
++++ b/drivers/spi/spi-qup.c
+@@ -298,7 +298,7 @@ static void spi_qup_fifo_write(struct sp
+ }
+
+ static void spi_qup_block_read(struct spi_qup *controller,
+- struct spi_transfer *xfer)
++ struct spi_transfer *xfer, u32 *opflags)
+ {
+ u32 data;
+ u32 reads_per_blk = controller->in_blk_sz >> 2;
+@@ -327,10 +327,12 @@ static void spi_qup_block_read(struct sp
+
+ /*
+ * Due to extra stickiness of the QUP_OP_IN_SERVICE_FLAG during block
+- * reads, it has to be cleared again at the very end
++ * reads, it has to be cleared again at the very end. However, be sure
++ * to refresh opflags value because MAX_INPUT_DONE_FLAG may now be
++ * present and this is used to determine if transaction is complete
+ */
+- if (readl_relaxed(controller->base + QUP_OPERATIONAL) &
+- QUP_OP_MAX_INPUT_DONE_FLAG)
++ *opflags = readl_relaxed(controller->base + QUP_OPERATIONAL);
++ if (*opflags & QUP_OP_MAX_INPUT_DONE_FLAG)
+ writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
+ controller->base + QUP_OPERATIONAL);
+
+@@ -633,7 +635,7 @@ static irqreturn_t spi_qup_qup_irq(int i
+ if (!controller->use_dma) {
+ if (opflags & QUP_OP_IN_SERVICE_FLAG) {
+ if (opflags & QUP_OP_IN_BLOCK_READ_REQ)
+- spi_qup_block_read(controller, xfer);
++ spi_qup_block_read(controller, xfer, &opflags);
+ else
+ spi_qup_fifo_read(controller, xfer);
+ }
--- /dev/null
+From fded70251b1b58f68de1d3757ece9965f0b75452 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 19 Feb 2015 20:19:30 -0800
+Subject: [PATCH 1/3] watchdog: qcom: use timer devicetree binding
+
+MSM watchdog configuration happens in the same register block as the
+timer, so we'll use the same binding as the existing timer.
+
+The qcom-wdt will now be probed when devicetree has an entry compatible
+with "qcom,kpss-timer" or "qcom-scss-timer".
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/watchdog/qcom-wdt.c | 21 +++++++++++++++------
+ 1 file changed, 15 insertions(+), 6 deletions(-)
+
+--- a/drivers/watchdog/qcom-wdt.c
++++ b/drivers/watchdog/qcom-wdt.c
+@@ -20,9 +20,9 @@
+ #include <linux/reboot.h>
+ #include <linux/watchdog.h>
+
+-#define WDT_RST 0x0
+-#define WDT_EN 0x8
+-#define WDT_BITE_TIME 0x24
++#define WDT_RST 0x38
++#define WDT_EN 0x40
++#define WDT_BITE_TIME 0x5C
+
+ struct qcom_wdt {
+ struct watchdog_device wdd;
+@@ -117,6 +117,8 @@ static int qcom_wdt_probe(struct platfor
+ {
+ struct qcom_wdt *wdt;
+ struct resource *res;
++ struct device_node *np = pdev->dev.of_node;
++ u32 percpu_offset;
+ int ret;
+
+ wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+@@ -124,6 +126,14 @@ static int qcom_wdt_probe(struct platfor
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++ /* We use CPU0's DGT for the watchdog */
++ if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
++ percpu_offset = 0;
++
++ res->start += percpu_offset;
++ res->end += percpu_offset;
++
+ wdt->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(wdt->base))
+ return PTR_ERR(wdt->base);
+@@ -203,9 +213,8 @@ static int qcom_wdt_remove(struct platfo
+ }
+
+ static const struct of_device_id qcom_wdt_of_table[] = {
+- { .compatible = "qcom,kpss-wdt-msm8960", },
+- { .compatible = "qcom,kpss-wdt-apq8064", },
+- { .compatible = "qcom,kpss-wdt-ipq8064", },
++ { .compatible = "qcom,kpss-timer" },
++ { .compatible = "qcom,scss-timer" },
+ { },
+ };
+ MODULE_DEVICE_TABLE(of, qcom_wdt_of_table);
--- /dev/null
+From 297cf8136ecd6a56520888fd28948393766b8ee7 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 19 Feb 2015 20:27:39 -0800
+Subject: [PATCH 2/3] ARM: qcom: add description of KPSS WDT for IPQ8064
+
+Add the watchdog related entries to the Krait Processor Sub-system
+(KPSS) timer IPQ8064 devicetree section. Also, add a fixed-clock
+description of SLEEP_CLK, which will do for now.
+
+Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -60,6 +60,14 @@
+ };
+ };
+
++ clocks {
++ sleep_clk: sleep_clk {
++ compatible = "fixed-clock";
++ clock-frequency = <32768>;
++ #clock-cells = <0>;
++ };
++ };
++
+ soc: soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+@@ -89,10 +97,14 @@
+ compatible = "qcom,kpss-timer", "qcom,msm-timer";
+ interrupts = <1 1 0x301>,
+ <1 2 0x301>,
+- <1 3 0x301>;
++ <1 3 0x301>,
++ <1 4 0x301>,
++ <1 5 0x301>;
+ reg = <0x0200a000 0x100>;
+ clock-frequency = <25000000>,
+ <32768>;
++ clocks = <&sleep_clk>;
++ clock-names = "sleep";
+ cpu-offset = <0x80000>;
+ };
+
--- /dev/null
+From e535f01dffb6dd9e09934fa219be52af3437a8f6 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 19 Feb 2015 20:36:27 -0800
+Subject: [PATCH 3/3] ARM: msm: add watchdog entries to DT timer binding doc
+
+The watchdog has been reworked to use the same DT node as the timer.
+This change is updating the device tree doc accordingly.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ Documentation/devicetree/bindings/arm/msm/timer.txt | 16 +++++++++++++---
+ 1 file changed, 13 insertions(+), 3 deletions(-)
+
+--- a/Documentation/devicetree/bindings/arm/msm/timer.txt
++++ b/Documentation/devicetree/bindings/arm/msm/timer.txt
+@@ -9,11 +9,17 @@ Properties:
+ "qcom,scss-timer" - scorpion subsystem
+
+ - interrupts : Interrupts for the the debug timer, the first general purpose
+- timer, and optionally a second general purpose timer in that
+- order.
++ timer, and optionally a second general purpose timer, and
++ optionally as well, 2 watchdog interrupts, in that order.
+
+ - reg : Specifies the base address of the timer registers.
+
++- clocks: Reference to the parent clocks, one per output clock. The parents
++ must appear in the same order as the clock names.
++
++- clock-names: The name of the clocks as free-form strings. They should be in
++ the same order as the clocks.
++
+ - clock-frequency : The frequency of the debug timer and the general purpose
+ timer(s) in Hz in that order.
+
+@@ -29,9 +35,13 @@ Example:
+ compatible = "qcom,scss-timer", "qcom,msm-timer";
+ interrupts = <1 1 0x301>,
+ <1 2 0x301>,
+- <1 3 0x301>;
++ <1 3 0x301>,
++ <1 4 0x301>,
++ <1 5 0x301>;
+ reg = <0x0200a000 0x100>;
+ clock-frequency = <19200000>,
+ <32768>;
++ clocks = <&sleep_clk>;
++ clock-names = "sleep";
+ cpu-offset = <0x40000>;
+ };
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -14,6 +14,14 @@
+ };
+ };
+
++ alias {
++ serial0 = &uart4;
++ };
++
++ chosen {
++ linux,stdout-path = "serial0:115200n8";
++ };
++
+ soc {
+ pinmux@800000 {
+ i2c4_pins: i2c4_pinmux {
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -140,7 +140,7 @@
+ ranges;
+ status = "disabled";
+
+- serial@12490000 {
++ uart2: serial@12490000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x12490000 0x1000>,
+ <0x12480000 0x1000>;
+@@ -175,7 +175,7 @@
+ ranges;
+ status = "disabled";
+
+- serial@16340000 {
++ uart4: serial@16340000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x16340000 0x1000>,
+ <0x16300000 0x1000>;
+@@ -209,7 +209,7 @@
+ ranges;
+ status = "disabled";
+
+- serial@1a240000 {
++ uart5: serial@1a240000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x1a240000 0x1000>,
+ <0x1a200000 0x1000>;
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -77,15 +77,7 @@
+ spi-max-frequency = <50000000>;
+ reg = <0>;
+
+- partition@0 {
+- label = "rootfs";
+- reg = <0x0 0x1000000>;
+- };
+-
+- partition@1 {
+- label = "scratch";
+- reg = <0x1000000 0x1000000>;
+- };
++ linux,part-probe = "qcom-smem";
+ };
+ };
+ };
--- /dev/null
+From a32d6e7c8fca6371a2614924b89981bc912b6378 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 7 Apr 2015 19:58:58 -0700
+Subject: [PATCH] ARM: dts: qcom: add initial DB149 device-tree
+
+Add basic DB149 (IPQ806x based platform) device-tree. It supports UART,
+SATA, USB2, USB3 and NOR flash.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/Makefile | 1 +
+ arch/arm/boot/dts/qcom-ipq8064-db149.dts | 257 +++++++++++++++++++++++++++++++
+ 2 files changed, 258 insertions(+)
+ create mode 100644 arch/arm/boot/dts/qcom-ipq8064-db149.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -360,6 +360,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+ qcom-apq8084-ifc6540.dtb \
+ qcom-apq8084-mtp.dtb \
+ qcom-ipq8064-ap148.dtb \
++ qcom-ipq8064-db149.dtb \
+ qcom-msm8660-surf.dtb \
+ qcom-msm8960-cdp.dtb \
+ qcom-msm8974-sony-xperia-honami.dtb
+--- /dev/null
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -0,0 +1,132 @@
++#include "qcom-ipq8064-v1.0.dtsi"
++
++/ {
++ model = "Qualcomm IPQ8064/DB149";
++ compatible = "qcom,ipq8064-db149", "qcom,ipq8064";
++
++ reserved-memory {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ ranges;
++ rsvd@41200000 {
++ reg = <0x41200000 0x300000>;
++ no-map;
++ };
++ };
++
++ alias {
++ serial0 = &uart2;
++ };
++
++ chosen {
++ linux,stdout-path = "serial0:115200n8";
++ };
++
++ soc {
++ pinmux@800000 {
++ i2c4_pins: i2c4_pinmux {
++ pins = "gpio12", "gpio13";
++ function = "gsbi4";
++ bias-disable;
++ };
++
++ spi_pins: spi_pins {
++ mux {
++ pins = "gpio18", "gpio19", "gpio21";
++ function = "gsbi5";
++ drive-strength = <10>;
++ bias-none;
++ };
++ };
++ };
++
++ gsbi2: gsbi@12480000 {
++ qcom,mode = <GSBI_PROT_I2C_UART>;
++ status = "ok";
++ uart2: serial@12490000 {
++ status = "ok";
++ };
++ };
++
++ gsbi5: gsbi@1a200000 {
++ qcom,mode = <GSBI_PROT_SPI>;
++ status = "ok";
++
++ spi4: spi@1a280000 {
++ status = "ok";
++ spi-max-frequency = <50000000>;
++
++ pinctrl-0 = <&spi_pins>;
++ pinctrl-names = "default";
++
++ cs-gpios = <&qcom_pinmux 20 0>;
++
++ flash: m25p80@0 {
++ compatible = "s25fl256s1";
++ #address-cells = <1>;
++ #size-cells = <1>;
++ spi-max-frequency = <50000000>;
++ reg = <0>;
++ m25p,fast-read;
++
++ partition@0 {
++ label = "lowlevel_init";
++ reg = <0x0 0x1b0000>;
++ };
++
++ partition@1 {
++ label = "u-boot";
++ reg = <0x1b0000 0x80000>;
++ };
++
++ partition@2 {
++ label = "u-boot-env";
++ reg = <0x230000 0x40000>;
++ };
++
++ partition@3 {
++ label = "caldata";
++ reg = <0x270000 0x40000>;
++ };
++
++ partition@4 {
++ label = "firmware";
++ reg = <0x2b0000 0x1d50000>;
++ };
++ };
++ };
++ };
++
++ sata-phy@1b400000 {
++ status = "ok";
++ };
++
++ sata@29000000 {
++ status = "ok";
++ };
++
++ phy@100f8800 { /* USB3 port 1 HS phy */
++ status = "ok";
++ };
++
++ phy@100f8830 { /* USB3 port 1 SS phy */
++ status = "ok";
++ };
++
++ phy@110f8800 { /* USB3 port 0 HS phy */
++ status = "ok";
++ };
++
++ phy@110f8830 { /* USB3 port 0 SS phy */
++ status = "ok";
++ };
++
++ usb30@0 {
++ status = "ok";
++ };
++
++ usb30@1 {
++ status = "ok";
++ };
++ };
++};
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -46,15 +46,12 @@
+ serial@16340000 {
+ status = "ok";
+ };
+-
+- i2c4: i2c@16380000 {
+- status = "ok";
+-
+- clock-frequency = <200000>;
+-
+- pinctrl-0 = <&i2c4_pins>;
+- pinctrl-names = "default";
+- };
++ /*
++ * The i2c device on gsbi4 should not be enabled.
++ * On ipq806x designs gsbi4 i2c is meant for exclusive
++ * RPM usage. Turning this on in kernel manifests as
++ * i2c failure for the RPM.
++ */
+ };
+
+ gsbi5: gsbi@1a200000 {
+--- a/drivers/clk/qcom/gcc-ipq806x.c
++++ b/drivers/clk/qcom/gcc-ipq806x.c
+@@ -794,7 +794,7 @@ static struct clk_rcg gsbi7_qup_src = {
+ .parent_names = gcc_pxo_pll8,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+- .flags = CLK_SET_PARENT_GATE,
++ .flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
+ },
+ },
+ };
+@@ -810,7 +810,7 @@ static struct clk_branch gsbi7_qup_clk =
+ .parent_names = (const char *[]){ "gsbi7_qup_src" },
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+- .flags = CLK_SET_RATE_PARENT,
++ .flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
+ },
+ },
+ };
+@@ -858,7 +858,7 @@ static struct clk_branch gsbi4_h_clk = {
+ .hw.init = &(struct clk_init_data){
+ .name = "gsbi4_h_clk",
+ .ops = &clk_branch_ops,
+- .flags = CLK_IS_ROOT,
++ .flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED,
+ },
+ },
+ };
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -4,6 +4,11 @@
+ model = "Qualcomm IPQ8064/AP148";
+ compatible = "qcom,ipq8064-ap148", "qcom,ipq8064";
+
++ memory@0 {
++ reg = <0x42000000 0x1e000000>;
++ device_type = "memory";
++ };
++
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
--- /dev/null
+From fb7737e949e31d8a71acee6bbb670f32dbd2a2c0 Mon Sep 17 00:00:00 2001
+From: Suman Anna <s-anna@ti.com>
+Date: Wed, 4 Mar 2015 20:01:14 -0600
+Subject: [PATCH] hwspinlock/core: add device tree support
+
+This patch adds a new OF-friendly API of_hwspin_lock_get_id()
+for hwspinlock clients to use/request locks from a hwspinlock
+device instantiated through a device-tree blob. This new API
+can be used by hwspinlock clients to get the id for a specific
+lock using the phandle + args specifier, so that it can be
+requested using the available hwspin_lock_request_specific()
+API.
+
+Signed-off-by: Suman Anna <s-anna@ti.com>
+Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+[small comment clarification]
+Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
+---
+ Documentation/hwspinlock.txt | 10 +++++
+ drivers/hwspinlock/hwspinlock_core.c | 79 ++++++++++++++++++++++++++++++++++++
+ include/linux/hwspinlock.h | 7 ++++
+ 3 files changed, 96 insertions(+)
+
+--- a/Documentation/hwspinlock.txt
++++ b/Documentation/hwspinlock.txt
+@@ -48,6 +48,16 @@ independent, drivers.
+ ids for predefined purposes.
+ Should be called from a process context (might sleep).
+
++ int of_hwspin_lock_get_id(struct device_node *np, int index);
++ - retrieve the global lock id for an OF phandle-based specific lock.
++ This function provides a means for DT users of a hwspinlock module
++ to get the global lock id of a specific hwspinlock, so that it can
++ be requested using the normal hwspin_lock_request_specific() API.
++ The function returns a lock id number on success, -EPROBE_DEFER if
++ the hwspinlock device is not yet registered with the core, or other
++ error values.
++ Should be called from a process context (might sleep).
++
+ int hwspin_lock_free(struct hwspinlock *hwlock);
+ - free a previously-assigned hwspinlock; returns 0 on success, or an
+ appropriate error code on failure (e.g. -EINVAL if the hwspinlock
+--- a/drivers/hwspinlock/hwspinlock_core.c
++++ b/drivers/hwspinlock/hwspinlock_core.c
+@@ -27,6 +27,7 @@
+ #include <linux/hwspinlock.h>
+ #include <linux/pm_runtime.h>
+ #include <linux/mutex.h>
++#include <linux/of.h>
+
+ #include "hwspinlock_internal.h"
+
+@@ -257,6 +258,84 @@ void __hwspin_unlock(struct hwspinlock *
+ }
+ EXPORT_SYMBOL_GPL(__hwspin_unlock);
+
++/**
++ * of_hwspin_lock_simple_xlate - translate hwlock_spec to return a lock id
++ * @bank: the hwspinlock device bank
++ * @hwlock_spec: hwlock specifier as found in the device tree
++ *
++ * This is a simple translation function, suitable for hwspinlock platform
++ * drivers that only has a lock specifier length of 1.
++ *
++ * Returns a relative index of the lock within a specified bank on success,
++ * or -EINVAL on invalid specifier cell count.
++ */
++static inline int
++of_hwspin_lock_simple_xlate(const struct of_phandle_args *hwlock_spec)
++{
++ if (WARN_ON(hwlock_spec->args_count != 1))
++ return -EINVAL;
++
++ return hwlock_spec->args[0];
++}
++
++/**
++ * of_hwspin_lock_get_id() - get lock id for an OF phandle-based specific lock
++ * @np: device node from which to request the specific hwlock
++ * @index: index of the hwlock in the list of values
++ *
++ * This function provides a means for DT users of the hwspinlock module to
++ * get the global lock id of a specific hwspinlock using the phandle of the
++ * hwspinlock device, so that it can be requested using the normal
++ * hwspin_lock_request_specific() API.
++ *
++ * Returns the global lock id number on success, -EPROBE_DEFER if the hwspinlock
++ * device is not yet registered, -EINVAL on invalid args specifier value or an
++ * appropriate error as returned from the OF parsing of the DT client node.
++ */
++int of_hwspin_lock_get_id(struct device_node *np, int index)
++{
++ struct of_phandle_args args;
++ struct hwspinlock *hwlock;
++ struct radix_tree_iter iter;
++ void **slot;
++ int id;
++ int ret;
++
++ ret = of_parse_phandle_with_args(np, "hwlocks", "#hwlock-cells", index,
++ &args);
++ if (ret)
++ return ret;
++
++ /* Find the hwspinlock device: we need its base_id */
++ ret = -EPROBE_DEFER;
++ rcu_read_lock();
++ radix_tree_for_each_slot(slot, &hwspinlock_tree, &iter, 0) {
++ hwlock = radix_tree_deref_slot(slot);
++ if (unlikely(!hwlock))
++ continue;
++
++ if (hwlock->bank->dev->of_node == args.np) {
++ ret = 0;
++ break;
++ }
++ }
++ rcu_read_unlock();
++ if (ret < 0)
++ goto out;
++
++ id = of_hwspin_lock_simple_xlate(&args);
++ if (id < 0 || id >= hwlock->bank->num_locks) {
++ ret = -EINVAL;
++ goto out;
++ }
++ id += hwlock->bank->base_id;
++
++out:
++ of_node_put(args.np);
++ return ret ? ret : id;
++}
++EXPORT_SYMBOL_GPL(of_hwspin_lock_get_id);
++
+ static int hwspin_lock_register_single(struct hwspinlock *hwlock, int id)
+ {
+ struct hwspinlock *tmp;
+--- a/include/linux/hwspinlock.h
++++ b/include/linux/hwspinlock.h
+@@ -26,6 +26,7 @@
+ #define HWLOCK_IRQ 0x02 /* Disable interrupts, don't save state */
+
+ struct device;
++struct device_node;
+ struct hwspinlock;
+ struct hwspinlock_device;
+ struct hwspinlock_ops;
+@@ -66,6 +67,7 @@ int hwspin_lock_unregister(struct hwspin
+ struct hwspinlock *hwspin_lock_request(void);
+ struct hwspinlock *hwspin_lock_request_specific(unsigned int id);
+ int hwspin_lock_free(struct hwspinlock *hwlock);
++int of_hwspin_lock_get_id(struct device_node *np, int index);
+ int hwspin_lock_get_id(struct hwspinlock *hwlock);
+ int __hwspin_lock_timeout(struct hwspinlock *, unsigned int, int,
+ unsigned long *);
+@@ -120,6 +122,11 @@ void __hwspin_unlock(struct hwspinlock *
+ {
+ }
+
++static inline int of_hwspin_lock_get_id(struct device_node *np, int index)
++{
++ return 0;
++}
++
+ static inline int hwspin_lock_get_id(struct hwspinlock *hwlock)
+ {
+ return 0;
--- /dev/null
+From 19a0f61224d2d91860fa8291ab63cb104ee86bdd Mon Sep 17 00:00:00 2001
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Date: Tue, 24 Mar 2015 10:11:05 -0700
+Subject: [PATCH] hwspinlock: qcom: Add support for Qualcomm HW Mutex block
+
+Add driver for Qualcomm Hardware Mutex block found in many Qualcomm
+SoCs.
+
+Based on initial effort by Kumar Gala <galak@codeaurora.org>
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Reviewed-by: Andy Gross <agross@codeaurora.org>
+Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
+Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
+---
+ drivers/hwspinlock/Kconfig | 12 +++
+ drivers/hwspinlock/Makefile | 1 +
+ drivers/hwspinlock/qcom_hwspinlock.c | 181 +++++++++++++++++++++++++++++++++++
+ 3 files changed, 194 insertions(+)
+ create mode 100644 drivers/hwspinlock/qcom_hwspinlock.c
+
+--- a/drivers/hwspinlock/Kconfig
++++ b/drivers/hwspinlock/Kconfig
+@@ -18,6 +18,18 @@ config HWSPINLOCK_OMAP
+
+ If unsure, say N.
+
++config HWSPINLOCK_QCOM
++ tristate "Qualcomm Hardware Spinlock device"
++ depends on ARCH_QCOM
++ select HWSPINLOCK
++ select MFD_SYSCON
++ help
++ Say y here to support the Qualcomm Hardware Mutex functionality, which
++ provides a synchronisation mechanism for the various processors on
++ the SoC.
++
++ If unsure, say N.
++
+ config HSEM_U8500
+ tristate "STE Hardware Semaphore functionality"
+ depends on ARCH_U8500
+--- a/drivers/hwspinlock/Makefile
++++ b/drivers/hwspinlock/Makefile
+@@ -4,4 +4,5 @@
+
+ obj-$(CONFIG_HWSPINLOCK) += hwspinlock_core.o
+ obj-$(CONFIG_HWSPINLOCK_OMAP) += omap_hwspinlock.o
++obj-$(CONFIG_HWSPINLOCK_QCOM) += qcom_hwspinlock.o
+ obj-$(CONFIG_HSEM_U8500) += u8500_hsem.o
+--- /dev/null
++++ b/drivers/hwspinlock/qcom_hwspinlock.c
+@@ -0,0 +1,181 @@
++/*
++ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
++ * Copyright (c) 2015, Sony Mobile Communications AB
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/hwspinlock.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/pm_runtime.h>
++#include <linux/regmap.h>
++
++#include "hwspinlock_internal.h"
++
++#define QCOM_MUTEX_APPS_PROC_ID 1
++#define QCOM_MUTEX_NUM_LOCKS 32
++
++static int qcom_hwspinlock_trylock(struct hwspinlock *lock)
++{
++ struct regmap_field *field = lock->priv;
++ u32 lock_owner;
++ int ret;
++
++ ret = regmap_field_write(field, QCOM_MUTEX_APPS_PROC_ID);
++ if (ret)
++ return ret;
++
++ ret = regmap_field_read(field, &lock_owner);
++ if (ret)
++ return ret;
++
++ return lock_owner == QCOM_MUTEX_APPS_PROC_ID;
++}
++
++static void qcom_hwspinlock_unlock(struct hwspinlock *lock)
++{
++ struct regmap_field *field = lock->priv;
++ u32 lock_owner;
++ int ret;
++
++ ret = regmap_field_read(field, &lock_owner);
++ if (ret) {
++ pr_err("%s: unable to query spinlock owner\n", __func__);
++ return;
++ }
++
++ if (lock_owner != QCOM_MUTEX_APPS_PROC_ID) {
++ pr_err("%s: spinlock not owned by us (actual owner is %d)\n",
++ __func__, lock_owner);
++ }
++
++ ret = regmap_field_write(field, 0);
++ if (ret)
++ pr_err("%s: failed to unlock spinlock\n", __func__);
++}
++
++static const struct hwspinlock_ops qcom_hwspinlock_ops = {
++ .trylock = qcom_hwspinlock_trylock,
++ .unlock = qcom_hwspinlock_unlock,
++};
++
++static const struct of_device_id qcom_hwspinlock_of_match[] = {
++ { .compatible = "qcom,sfpb-mutex" },
++ { .compatible = "qcom,tcsr-mutex" },
++ { }
++};
++MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match);
++
++static int qcom_hwspinlock_probe(struct platform_device *pdev)
++{
++ struct hwspinlock_device *bank;
++ struct device_node *syscon;
++ struct reg_field field;
++ struct regmap *regmap;
++ size_t array_size;
++ u32 stride;
++ u32 base;
++ int ret;
++ int i;
++
++ syscon = of_parse_phandle(pdev->dev.of_node, "syscon", 0);
++ if (!syscon) {
++ dev_err(&pdev->dev, "no syscon property\n");
++ return -ENODEV;
++ }
++
++ regmap = syscon_node_to_regmap(syscon);
++ if (IS_ERR(regmap))
++ return PTR_ERR(regmap);
++
++ ret = of_property_read_u32_index(pdev->dev.of_node, "syscon", 1, &base);
++ if (ret < 0) {
++ dev_err(&pdev->dev, "no offset in syscon\n");
++ return -EINVAL;
++ }
++
++ ret = of_property_read_u32_index(pdev->dev.of_node, "syscon", 2, &stride);
++ if (ret < 0) {
++ dev_err(&pdev->dev, "no stride syscon\n");
++ return -EINVAL;
++ }
++
++ array_size = QCOM_MUTEX_NUM_LOCKS * sizeof(struct hwspinlock);
++ bank = devm_kzalloc(&pdev->dev, sizeof(*bank) + array_size, GFP_KERNEL);
++ if (!bank)
++ return -ENOMEM;
++
++ platform_set_drvdata(pdev, bank);
++
++ for (i = 0; i < QCOM_MUTEX_NUM_LOCKS; i++) {
++ field.reg = base + i * stride;
++ field.lsb = 0;
++ field.msb = 32;
++
++ bank->lock[i].priv = devm_regmap_field_alloc(&pdev->dev,
++ regmap, field);
++ }
++
++ pm_runtime_enable(&pdev->dev);
++
++ ret = hwspin_lock_register(bank, &pdev->dev, &qcom_hwspinlock_ops,
++ 0, QCOM_MUTEX_NUM_LOCKS);
++ if (ret)
++ pm_runtime_disable(&pdev->dev);
++
++ return ret;
++}
++
++static int qcom_hwspinlock_remove(struct platform_device *pdev)
++{
++ struct hwspinlock_device *bank = platform_get_drvdata(pdev);
++ int ret;
++
++ ret = hwspin_lock_unregister(bank);
++ if (ret) {
++ dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);
++ return ret;
++ }
++
++ pm_runtime_disable(&pdev->dev);
++
++ return 0;
++}
++
++static struct platform_driver qcom_hwspinlock_driver = {
++ .probe = qcom_hwspinlock_probe,
++ .remove = qcom_hwspinlock_remove,
++ .driver = {
++ .name = "qcom_hwspinlock",
++ .of_match_table = qcom_hwspinlock_of_match,
++ },
++};
++
++static int __init qcom_hwspinlock_init(void)
++{
++ return platform_driver_register(&qcom_hwspinlock_driver);
++}
++/* board init code might need to reserve hwspinlocks for predefined purposes */
++postcore_initcall(qcom_hwspinlock_init);
++
++static void __exit qcom_hwspinlock_exit(void)
++{
++ platform_driver_unregister(&qcom_hwspinlock_driver);
++}
++module_exit(qcom_hwspinlock_exit);
++
++MODULE_LICENSE("GPL v2");
++MODULE_DESCRIPTION("Hardware spinlock driver for Qualcomm SoCs");
--- /dev/null
+From bd5717a4632cdecafe82d03de7dcb3b1876e2828 Mon Sep 17 00:00:00 2001
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Date: Fri, 26 Jun 2015 14:47:21 -0700
+Subject: [PATCH] hwspinlock: qcom: Correct msb in regmap_field
+
+msb of the regmap_field was mistakenly given the value 32, to set all bits
+in the regmap update mask; although incorrect this worked until 921cc294,
+where the mask calculation was corrected.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
+---
+ drivers/hwspinlock/qcom_hwspinlock.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/hwspinlock/qcom_hwspinlock.c
++++ b/drivers/hwspinlock/qcom_hwspinlock.c
+@@ -123,7 +123,7 @@ static int qcom_hwspinlock_probe(struct
+ for (i = 0; i < QCOM_MUTEX_NUM_LOCKS; i++) {
+ field.reg = base + i * stride;
+ field.lsb = 0;
+- field.msb = 32;
++ field.msb = 31;
+
+ bank->lock[i].priv = devm_regmap_field_alloc(&pdev->dev,
+ regmap, field);
--- /dev/null
+From c7c482da19a5e4ba7101198c21c2434056b0b2da Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 13 Aug 2015 09:45:26 -0700
+Subject: [PATCH 1/3] ARM: qcom: add SFPB nodes to IPQ806x dts
+
+Add one new node to the ipq806x.dtsi file to declare & register the
+hardware spinlock devices. This mechanism is required to be used by
+other drivers such as SMEM.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -291,5 +291,17 @@
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
++
++ sfpb_mutex_block: syscon@1200600 {
++ compatible = "syscon";
++ reg = <0x01200600 0x100>;
++ };
+ };
++
++ sfpb_mutex: sfpb-mutex {
++ compatible = "qcom,sfpb-mutex";
++ syscon = <&sfpb_mutex_block 4 4>;
++
++ #hwlock-cells = <1>;
++ };
+ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,1/2] soc: qcom: Add device tree binding for SMEM
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+X-Patchwork-Id: 6202201
+Message-Id: <1428795178-24312-1-git-send-email-bjorn.andersson@sonymobile.com>
+To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Ian Campbell <ijc+devicetree@hellion.org.uk>,
+ Kumar Gala <galak@codeaurora.org>, Jeffrey Hugo <jhugo@codeaurora.org>,
+ Andry Gross <agross@codeaurora.org>
+Cc: <devicetree@vger.kernel.org>,
+ linux-arm-msm <linux-arm-msm@vger.kernel.org>,
+ <linux-kernel@vger.kernel.org>
+Date: Sat, 11 Apr 2015 16:32:57 -0700
+
+Add device tree binding documentation for the Qualcom Shared Memory
+manager.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+
+---
+Changes since v1:
+- None
+
+ .../devicetree/bindings/soc/qcom/qcom,smem.txt | 49 ++++++++++++++++++++++
+ 1 file changed, 49 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
+@@ -0,0 +1,49 @@
++Qualcomm Shared Memory binding
++
++This binding describes the Qualcomm Shared Memory, used to share data between
++various subsystems and OSes in Qualcomm platforms.
++
++- compatible:
++ Usage: required
++ Value type: <stringlist>
++ Definition: must be:
++ "qcom,smem"
++
++- memory-region:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: handle to memory reservation for main smem memory region.
++
++- reg:
++ Usage: optional
++ Value type: <prop-encoded-array>
++ Definition: base address and size pair for any additional memory areas
++ of the shared memory.
++
++- hwspinlocks:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: reference to a hwspinlock used to protect allocations from
++ the shared memory
++
++= EXAMPLE
++
++ reserved-memory {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ ranges;
++
++ smem_region: smem@fa00000 {
++ reg = <0xfa00000 0x200000>;
++ no-map;
++ };
++ };
++
++ smem@fa00000 {
++ compatible = "qcom,smem";
++
++ memory-region = <&smem_region>;
++ reg = <0xfc428000 0x4000>;
++
++ hwlocks = <&tcsr_mutex 3>;
++ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,2/2] soc: qcom: Add Shared Memory Manager driver
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+X-Patchwork-Id: 6202211
+Message-Id: <1428795178-24312-2-git-send-email-bjorn.andersson@sonymobile.com>
+To: Kumar Gala <galak@codeaurora.org>, Andy Gross <agross@codeaurora.org>,
+ David Brown <davidb@codeaurora.org>, Jeffrey Hugo <jhugo@codeaurora.org>
+Cc: <linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
+ <linux-soc@vger.kernel.org>
+Date: Sat, 11 Apr 2015 16:32:58 -0700
+
+The Shared Memory Manager driver implements an interface for allocating
+and accessing items in the memory area shared among all of the
+processors in a Qualcomm platform.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Reviewed-by: Andy Gross <agross@codeaurora.org>
+Tested-by: Andy Gross <agross@codeaurora.org>
+
+---
+Changes since v1:
+- ioremapping the regions nocache
+- improved documentation of the two regions of partitions
+- corrected free space check in private allocator
+
+ drivers/soc/qcom/Kconfig | 7 +
+ drivers/soc/qcom/Makefile | 1 +
+ drivers/soc/qcom/smem.c | 768 ++++++++++++++++++++++++++++++++++++++++++
+ include/linux/soc/qcom/smem.h | 14 +
+ 4 files changed, 790 insertions(+)
+ create mode 100644 drivers/soc/qcom/smem.c
+ create mode 100644 include/linux/soc/qcom/smem.h
+
+--- a/drivers/soc/qcom/Kconfig
++++ b/drivers/soc/qcom/Kconfig
+@@ -9,3 +9,10 @@ config QCOM_GSBI
+ functions for connecting the underlying serial UART, SPI, and I2C
+ devices to the output pins.
+
++config QCOM_SMEM
++ tristate "Qualcomm Shared Memory Manager (SMEM)"
++ depends on ARCH_QCOM
++ help
++ Say y here to enable support for the Qualcomm Shared Memory Manager.
++ The driver provides an interface to items in a heap shared among all
++ processors in a Qualcomm platform.
+--- a/drivers/soc/qcom/Makefile
++++ b/drivers/soc/qcom/Makefile
+@@ -1 +1,2 @@
+ obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
++obj-$(CONFIG_QCOM_SMEM) += smem.o
+--- /dev/null
++++ b/drivers/soc/qcom/smem.c
+@@ -0,0 +1,768 @@
++/*
++ * Copyright (c) 2015, Sony Mobile Communications AB.
++ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/hwspinlock.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_address.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/soc/qcom/smem.h>
++
++/*
++ * The Qualcomm shared memory system is a allocate only heap structure that
++ * consists of one of more memory areas that can be accessed by the processors
++ * in the SoC.
++ *
++ * All systems contains a global heap, accessible by all processors in the SoC,
++ * with a table of contents data structure (@smem_header) at the beginning of
++ * the main shared memory block.
++ *
++ * The global header contains metadata for allocations as well as a fixed list
++ * of 512 entries (@smem_global_entry) that can be initialized to reference
++ * parts of the shared memory space.
++ *
++ *
++ * In addition to this global heap a set of "private" heaps can be set up at
++ * boot time with access restrictions so that only certain processor pairs can
++ * access the data.
++ *
++ * These partitions are referenced from an optional partition table
++ * (@smem_ptable), that is found 4kB from the end of the main smem region. The
++ * partition table entries (@smem_ptable_entry) lists the involved processors
++ * (or hosts) and their location in the main shared memory region.
++ *
++ * Each partition starts with a header (@smem_partition_header) that identifies
++ * the partition and holds properties for the two internal memory regions. The
++ * two regions are cached and non-cached memory respectively. Each region
++ * contain a link list of allocation headers (@smem_private_entry) followed by
++ * their data.
++ *
++ * Items in the non-cached region are allocated from the start of the partition
++ * while items in the cached region are allocated from the end. The free area
++ * is hence the region between the cached and non-cached offsets.
++ *
++ *
++ * To synchronize allocations in the shared memory heaps a remote spinlock must
++ * be held - currently lock number 3 of the sfpb or tcsr is used for this on all
++ * platforms.
++ *
++ */
++
++/**
++ * struct smem_proc_comm - proc_comm communication struct (legacy)
++ * @command: current command to be executed
++ * @status: status of the currently requested command
++ * @params: parameters to the command
++ */
++struct smem_proc_comm {
++ u32 command;
++ u32 status;
++ u32 params[2];
++};
++
++/**
++ * struct smem_global_entry - entry to reference smem items on the heap
++ * @allocated: boolean to indicate if this entry is used
++ * @offset: offset to the allocated space
++ * @size: size of the allocated space, 8 byte aligned
++ * @aux_base: base address for the memory region used by this unit, or 0 for
++ * the default region. bits 0,1 are reserved
++ */
++struct smem_global_entry {
++ u32 allocated;
++ u32 offset;
++ u32 size;
++ u32 aux_base; /* bits 1:0 reserved */
++};
++#define AUX_BASE_MASK 0xfffffffc
++
++/**
++ * struct smem_header - header found in beginning of primary smem region
++ * @proc_comm: proc_comm communication interface (legacy)
++ * @version: array of versions for the various subsystems
++ * @initialized: boolean to indicate that smem is initialized
++ * @free_offset: index of the first unallocated byte in smem
++ * @available: number of bytes available for allocation
++ * @reserved: reserved field, must be 0
++ * toc: array of references to items
++ */
++struct smem_header {
++ struct smem_proc_comm proc_comm[4];
++ u32 version[32];
++ u32 initialized;
++ u32 free_offset;
++ u32 available;
++ u32 reserved;
++ struct smem_global_entry toc[];
++};
++
++/**
++ * struct smem_ptable_entry - one entry in the @smem_ptable list
++ * @offset: offset, within the main shared memory region, of the partition
++ * @size: size of the partition
++ * @flags: flags for the partition (currently unused)
++ * @host0: first processor/host with access to this partition
++ * @host1: second processor/host with access to this partition
++ * @reserved: reserved entries for later use
++ */
++struct smem_ptable_entry {
++ u32 offset;
++ u32 size;
++ u32 flags;
++ u16 host0;
++ u16 host1;
++ u32 reserved[8];
++};
++
++/**
++ * struct smem_ptable - partition table for the private partitions
++ * @magic: magic number, must be SMEM_PTABLE_MAGIC
++ * @version: version of the partition table
++ * @num_entries: number of partitions in the table
++ * @reserved: for now reserved entries
++ * @entry: list of @smem_ptable_entry for the @num_entries partitions
++ */
++struct smem_ptable {
++ u32 magic;
++ u32 version;
++ u32 num_entries;
++ u32 reserved[5];
++ struct smem_ptable_entry entry[];
++};
++#define SMEM_PTABLE_MAGIC 0x434f5424 /* "$TOC" */
++
++/**
++ * struct smem_partition_header - header of the partitions
++ * @magic: magic number, must be SMEM_PART_MAGIC
++ * @host0: first processor/host with access to this partition
++ * @host1: second processor/host with access to this partition
++ * @size: size of the partition
++ * @offset_free_uncached: offset to the first free byte of uncached memory in
++ * this partition
++ * @offset_free_cached: offset to the first free byte of cached memory in this
++ * partition
++ * @reserved: for now reserved entries
++ */
++struct smem_partition_header {
++ u32 magic;
++ u16 host0;
++ u16 host1;
++ u32 size;
++ u32 offset_free_uncached;
++ u32 offset_free_cached;
++ u32 reserved[3];
++};
++#define SMEM_PART_MAGIC 0x54525024 /* "$PRT" */
++
++/**
++ * struct smem_private_entry - header of each item in the private partition
++ * @canary: magic number, must be SMEM_PRIVATE_CANARY
++ * @item: identifying number of the smem item
++ * @size: size of the data, including padding bytes
++ * @padding_data: number of bytes of padding of data
++ * @padding_hdr: number of bytes of padding between the header and the data
++ * @reserved: for now reserved entry
++ */
++struct smem_private_entry {
++ u16 canary;
++ u16 item;
++ u32 size; /* includes padding bytes */
++ u16 padding_data;
++ u16 padding_hdr;
++ u32 reserved;
++};
++#define SMEM_PRIVATE_CANARY 0xa5a5
++
++/*
++ * Item 3 of the global heap contains an array of versions for the various
++ * software components in the SoC. We verify that the boot loader version is
++ * what the expected version (SMEM_EXPECTED_VERSION) as a sanity check.
++ */
++#define SMEM_ITEM_VERSION 3
++#define SMEM_MASTER_SBL_VERSION_INDEX 7
++#define SMEM_EXPECTED_VERSION 11
++
++/*
++ * The first 8 items are only to be allocated by the boot loader while
++ * initializing the heap.
++ */
++#define SMEM_ITEM_LAST_FIXED 8
++
++/* Highest accepted item number, for both global and private heaps */
++#define SMEM_ITEM_LAST 512
++
++/* Processor/host identifier for the application processor */
++#define SMEM_HOST_APPS 0
++
++/* Max number of processors/hosts in a system */
++#define SMEM_HOST_COUNT 7
++
++/**
++ * struct smem_region - representation of a chunk of memory used for smem
++ * @aux_base: identifier of aux_mem base
++ * @virt_base: virtual base address of memory with this aux_mem identifier
++ * @size: size of the memory region
++ */
++struct smem_region {
++ u32 aux_base;
++ void __iomem *virt_base;
++ size_t size;
++};
++
++/**
++ * struct qcom_smem - device data for the smem device
++ * @dev: device pointer
++ * @hwlock: reference to a hwspinlock
++ * @partitions: list of pointers to partitions affecting the current
++ * processor/host
++ * @num_regions: number of @regions
++ * @regions: list of the memory regions defining the shared memory
++ */
++struct qcom_smem {
++ struct device *dev;
++
++ struct hwspinlock *hwlock;
++
++ struct smem_partition_header *partitions[SMEM_HOST_COUNT];
++
++ unsigned num_regions;
++ struct smem_region regions[0];
++};
++
++/* Pointer to the one and only smem handle */
++static struct qcom_smem *__smem;
++
++/* Timeout (ms) for the trylock of remote spinlocks */
++#define HWSPINLOCK_TIMEOUT 1000
++
++static int qcom_smem_alloc_private(struct qcom_smem *smem,
++ unsigned host,
++ unsigned item,
++ size_t size)
++{
++ struct smem_partition_header *phdr;
++ struct smem_private_entry *hdr;
++ size_t alloc_size;
++ void *p;
++
++ /* We're not going to find it if there's no matching partition */
++ if (host >= SMEM_HOST_COUNT || !smem->partitions[host])
++ return -ENOENT;
++
++ phdr = smem->partitions[host];
++
++ p = (void *)phdr + sizeof(*phdr);
++ while (p < (void *)phdr + phdr->offset_free_uncached) {
++ hdr = p;
++
++ if (hdr->canary != SMEM_PRIVATE_CANARY) {
++ dev_err(smem->dev,
++ "Found invalid canary in host %d partition\n",
++ host);
++ return -EINVAL;
++ }
++
++ if (hdr->item == item)
++ return -EEXIST;
++
++ p += sizeof(*hdr) + hdr->padding_hdr + hdr->size;
++ }
++
++ /* Check that we don't grow into the cached region */
++ alloc_size = sizeof(*hdr) + ALIGN(size, 8);
++ if (p + alloc_size >= (void *)phdr + phdr->offset_free_cached) {
++ dev_err(smem->dev, "Out of memory\n");
++ return -ENOSPC;
++ }
++
++ hdr = p;
++ hdr->canary = SMEM_PRIVATE_CANARY;
++ hdr->item = item;
++ hdr->size = ALIGN(size, 8);
++ hdr->padding_data = hdr->size - size;
++ hdr->padding_hdr = 0;
++
++ /*
++ * Ensure the header is written before we advance the free offset, so
++ * that remote processors that does not take the remote spinlock still
++ * gets a consistent view of the linked list.
++ */
++ wmb();
++ phdr->offset_free_uncached += alloc_size;
++
++ return 0;
++}
++
++static int qcom_smem_alloc_global(struct qcom_smem *smem,
++ unsigned item,
++ size_t size)
++{
++ struct smem_header *header;
++ struct smem_global_entry *entry;
++
++ if (WARN_ON(item >= SMEM_ITEM_LAST))
++ return -EINVAL;
++
++ header = smem->regions[0].virt_base;
++ entry = &header->toc[item];
++ if (entry->allocated)
++ return -EEXIST;
++
++ size = ALIGN(size, 8);
++ if (WARN_ON(size > header->available))
++ return -ENOMEM;
++
++ entry->offset = header->free_offset;
++ entry->size = size;
++
++ /*
++ * Ensure the header is consistent before we mark the item allocated,
++ * so that remote processors will get a consistent view of the item
++ * even though they do not take the spinlock on read.
++ */
++ wmb();
++ entry->allocated = 1;
++
++ header->free_offset += size;
++ header->available -= size;
++
++ return 0;
++}
++
++/**
++ * qcom_smem_alloc - allocate space for a smem item
++ * @host: remote processor id, or -1
++ * @item: smem item handle
++ * @size: number of bytes to be allocated
++ *
++ * Allocate space for a given smem item of size @size, given that the item is
++ * not yet allocated.
++ */
++int qcom_smem_alloc(unsigned host, unsigned item, size_t size)
++{
++ unsigned long flags;
++ int ret;
++
++ if (!__smem)
++ return -EPROBE_DEFER;
++
++ if (item < SMEM_ITEM_LAST_FIXED) {
++ dev_err(__smem->dev,
++ "Rejecting allocation of static entry %d\n", item);
++ return -EINVAL;
++ }
++
++ ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
++ HWSPINLOCK_TIMEOUT,
++ &flags);
++ if (ret)
++ return ret;
++
++ ret = qcom_smem_alloc_private(__smem, host, item, size);
++ if (ret == -ENOENT)
++ ret = qcom_smem_alloc_global(__smem, item, size);
++
++ hwspin_unlock_irqrestore(__smem->hwlock, &flags);
++
++ return ret;
++}
++EXPORT_SYMBOL(qcom_smem_alloc);
++
++static int qcom_smem_get_global(struct qcom_smem *smem,
++ unsigned item,
++ void **ptr,
++ size_t *size)
++{
++ struct smem_header *header;
++ struct smem_region *area;
++ struct smem_global_entry *entry;
++ u32 aux_base;
++ unsigned i;
++
++ if (WARN_ON(item >= SMEM_ITEM_LAST))
++ return -EINVAL;
++
++ header = smem->regions[0].virt_base;
++ entry = &header->toc[item];
++ if (!entry->allocated)
++ return -ENXIO;
++
++ if (ptr != NULL) {
++ aux_base = entry->aux_base & AUX_BASE_MASK;
++
++ for (i = 0; i < smem->num_regions; i++) {
++ area = &smem->regions[i];
++
++ if (area->aux_base == aux_base || !aux_base) {
++ *ptr = area->virt_base + entry->offset;
++ break;
++ }
++ }
++ }
++ if (size != NULL)
++ *size = entry->size;
++
++ return 0;
++}
++
++static int qcom_smem_get_private(struct qcom_smem *smem,
++ unsigned host,
++ unsigned item,
++ void **ptr,
++ size_t *size)
++{
++ struct smem_partition_header *phdr;
++ struct smem_private_entry *hdr;
++ void *p;
++
++ /* We're not going to find it if there's no matching partition */
++ if (host >= SMEM_HOST_COUNT || !smem->partitions[host])
++ return -ENOENT;
++
++ phdr = smem->partitions[host];
++
++ p = (void *)phdr + sizeof(*phdr);
++ while (p < (void *)phdr + phdr->offset_free_uncached) {
++ hdr = p;
++
++ if (hdr->canary != SMEM_PRIVATE_CANARY) {
++ dev_err(smem->dev,
++ "Found invalid canary in host %d partition\n",
++ host);
++ return -EINVAL;
++ }
++
++ if (hdr->item == item) {
++ if (ptr != NULL)
++ *ptr = p + sizeof(*hdr) + hdr->padding_hdr;
++
++ if (size != NULL)
++ *size = hdr->size - hdr->padding_data;
++
++ return 0;
++ }
++
++ p += sizeof(*hdr) + hdr->padding_hdr + hdr->size;
++ }
++
++ return -ENOENT;
++}
++
++/**
++ * qcom_smem_get - resolve ptr of size of a smem item
++ * @host: the remote processor, or -1
++ * @item: smem item handle
++ * @ptr: pointer to be filled out with address of the item
++ * @size: pointer to be filled out with size of the item
++ *
++ * Looks up pointer and size of a smem item.
++ */
++int qcom_smem_get(unsigned host, unsigned item, void **ptr, size_t *size)
++{
++ unsigned long flags;
++ int ret;
++
++ if (!__smem)
++ return -EPROBE_DEFER;
++
++ ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
++ HWSPINLOCK_TIMEOUT,
++ &flags);
++ if (ret)
++ return ret;
++
++ ret = qcom_smem_get_private(__smem, host, item, ptr, size);
++ if (ret == -ENOENT)
++ ret = qcom_smem_get_global(__smem, item, ptr, size);
++
++ hwspin_unlock_irqrestore(__smem->hwlock, &flags);
++ return ret;
++
++}
++EXPORT_SYMBOL(qcom_smem_get);
++
++/**
++ * qcom_smem_get_free_space - retrieve amont of free space in a partition
++ * @host: the remote processor identifing a partition, or -1
++ *
++ * To be used by smem clients as a quick way to determine if any new
++ * allocations has been made.
++ */
++int qcom_smem_get_free_space(unsigned host)
++{
++ struct smem_partition_header *phdr;
++ struct smem_header *header;
++ unsigned ret;
++
++ if (!__smem)
++ return -EPROBE_DEFER;
++
++ if (host < SMEM_HOST_COUNT && __smem->partitions[host]) {
++ phdr = __smem->partitions[host];
++ ret = phdr->offset_free_uncached;
++ } else {
++ header = __smem->regions[0].virt_base;
++ ret = header->available;
++ }
++
++ return ret;
++}
++EXPORT_SYMBOL(qcom_smem_get_free_space);
++
++static int qcom_smem_get_sbl_version(struct qcom_smem *smem)
++{
++ unsigned *versions;
++ size_t size;
++ int ret;
++
++ ret = qcom_smem_get_global(smem, SMEM_ITEM_VERSION,
++ (void **)&versions, &size);
++ if (ret < 0) {
++ dev_err(smem->dev, "Unable to read the version item\n");
++ return -ENOENT;
++ }
++
++ if (size < sizeof(unsigned) * SMEM_MASTER_SBL_VERSION_INDEX) {
++ dev_err(smem->dev, "Version item is too small\n");
++ return -EINVAL;
++ }
++
++ return versions[SMEM_MASTER_SBL_VERSION_INDEX];
++}
++
++static int qcom_smem_enumerate_partitions(struct qcom_smem *smem,
++ unsigned local_host)
++{
++ struct smem_partition_header *header;
++ struct smem_ptable_entry *entry;
++ struct smem_ptable *ptable;
++ unsigned remote_host;
++ int i;
++
++ ptable = smem->regions[0].virt_base + smem->regions[0].size - 4 * 1024;
++ if (ptable->magic != SMEM_PTABLE_MAGIC)
++ return 0;
++
++ if (ptable->version != 1) {
++ dev_err(smem->dev,
++ "Unsupported partition header version %d\n",
++ ptable->version);
++ return -EINVAL;
++ }
++
++ for (i = 0; i < ptable->num_entries; i++) {
++ entry = &ptable->entry[i];
++
++ if (entry->host0 != local_host && entry->host1 != local_host)
++ continue;
++
++ if (!entry->offset)
++ continue;
++
++ if (!entry->size)
++ continue;
++
++ if (entry->host0 == local_host)
++ remote_host = entry->host1;
++ else
++ remote_host = entry->host0;
++
++ if (smem->partitions[remote_host]) {
++ dev_err(smem->dev,
++ "Already found a partition for host %d\n",
++ remote_host);
++ return -EINVAL;
++ }
++
++ header = smem->regions[0].virt_base + entry->offset;
++
++ if (header->magic != SMEM_PART_MAGIC) {
++ dev_err(smem->dev,
++ "Partition %d has invalid magic\n", i);
++ return -EINVAL;
++ }
++
++ if (header->host0 != local_host && header->host1 != local_host) {
++ dev_err(smem->dev,
++ "Partition %d hosts are invalid\n", i);
++ return -EINVAL;
++ }
++
++ if (header->host0 != remote_host && header->host1 != remote_host) {
++ dev_err(smem->dev,
++ "Partition %d hosts are invalid\n", i);
++ return -EINVAL;
++ }
++
++ if (header->size != entry->size) {
++ dev_err(smem->dev,
++ "Partition %d has invalid size\n", i);
++ return -EINVAL;
++ }
++
++ if (header->offset_free_uncached > header->size) {
++ dev_err(smem->dev,
++ "Partition %d has invalid free pointer\n", i);
++ return -EINVAL;
++ }
++
++ smem->partitions[remote_host] = header;
++ }
++
++ return 0;
++}
++
++static int qcom_smem_count_mem_regions(struct platform_device *pdev)
++{
++ struct resource *res;
++ int num_regions = 0;
++ int i;
++
++ for (i = 0; i < pdev->num_resources; i++) {
++ res = &pdev->resource[i];
++
++ if (resource_type(res) == IORESOURCE_MEM)
++ num_regions++;
++ }
++
++ return num_regions;
++}
++
++static int qcom_smem_probe(struct platform_device *pdev)
++{
++ struct smem_header *header;
++ struct device_node *np;
++ struct qcom_smem *smem;
++ struct resource *res;
++ struct resource r;
++ size_t array_size;
++ int num_regions = 0;
++ int hwlock_id;
++ u32 version;
++ int ret;
++ int i;
++
++ num_regions = qcom_smem_count_mem_regions(pdev) + 1;
++
++ array_size = num_regions * sizeof(struct smem_region);
++ smem = devm_kzalloc(&pdev->dev, sizeof(*smem) + array_size, GFP_KERNEL);
++ if (!smem)
++ return -ENOMEM;
++
++ smem->dev = &pdev->dev;
++ smem->num_regions = num_regions;
++
++ np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
++ if (!np) {
++ dev_err(&pdev->dev, "No memory-region specified\n");
++ return -EINVAL;
++ }
++
++ ret = of_address_to_resource(np, 0, &r);
++ of_node_put(np);
++ if (ret)
++ return ret;
++
++ smem->regions[0].aux_base = (u32)r.start;
++ smem->regions[0].size = resource_size(&r);
++ smem->regions[0].virt_base = devm_ioremap_nocache(&pdev->dev,
++ r.start,
++ resource_size(&r));
++ if (!smem->regions[0].virt_base)
++ return -ENOMEM;
++
++ for (i = 1; i < num_regions; i++) {
++ res = platform_get_resource(pdev, IORESOURCE_MEM, i - 1);
++
++ smem->regions[i].aux_base = (u32)res->start;
++ smem->regions[i].size = resource_size(res);
++ smem->regions[i].virt_base = devm_ioremap_nocache(&pdev->dev,
++ res->start,
++ resource_size(res));
++ if (!smem->regions[i].virt_base)
++ return -ENOMEM;
++ }
++
++ header = smem->regions[0].virt_base;
++ if (header->initialized != 1 || header->reserved) {
++ dev_err(&pdev->dev, "SMEM is not initilized by SBL\n");
++ return -EINVAL;
++ }
++
++ version = qcom_smem_get_sbl_version(smem);
++ if (version >> 16 != SMEM_EXPECTED_VERSION) {
++ dev_err(&pdev->dev, "Unsupported smem version 0x%x\n", version);
++ return -EINVAL;
++ }
++
++ ret = qcom_smem_enumerate_partitions(smem, SMEM_HOST_APPS);
++ if (ret < 0)
++ return ret;
++
++ hwlock_id = of_hwspin_lock_get_id(pdev->dev.of_node, 0);
++ if (hwlock_id < 0) {
++ dev_err(&pdev->dev, "failed to retrieve hwlock\n");
++ return hwlock_id;
++ }
++
++ smem->hwlock = hwspin_lock_request_specific(hwlock_id);
++ if (!smem->hwlock)
++ return -ENXIO;
++
++ __smem = smem;
++
++ return 0;
++}
++
++static int qcom_smem_remove(struct platform_device *pdev)
++{
++ hwspin_lock_free(__smem->hwlock);
++ __smem = NULL;
++
++ return 0;
++}
++
++static const struct of_device_id qcom_smem_of_match[] = {
++ { .compatible = "qcom,smem" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, qcom_smem_of_match);
++
++static struct platform_driver qcom_smem_driver = {
++ .probe = qcom_smem_probe,
++ .remove = qcom_smem_remove,
++ .driver = {
++ .name = "qcom_smem",
++ .of_match_table = qcom_smem_of_match,
++ .suppress_bind_attrs = true,
++ },
++};
++
++static int __init qcom_smem_init(void)
++{
++ return platform_driver_register(&qcom_smem_driver);
++}
++arch_initcall(qcom_smem_init);
++
++static void __exit qcom_smem_exit(void)
++{
++ platform_driver_unregister(&qcom_smem_driver);
++}
++module_exit(qcom_smem_exit)
++
++MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
++MODULE_DESCRIPTION("Qualcomm Shared Memory Manager");
++MODULE_LICENSE("GPLv2");
+--- /dev/null
++++ b/include/linux/soc/qcom/smem.h
+@@ -0,0 +1,14 @@
++#ifndef __QCOM_SMEM_H__
++#define __QCOM_SMEM_H__
++
++struct device_node;
++struct qcom_smem;
++
++#define QCOM_SMEM_HOST_ANY -1
++
++int qcom_smem_alloc(unsigned host, unsigned item, size_t size);
++int qcom_smem_get(unsigned host, unsigned item, void **ptr, size_t *size);
++
++int qcom_smem_get_free_space(unsigned host);
++
++#endif
--- /dev/null
+From f212be3a6134db8dd7c5f6f0987536a669401fae Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Fri, 14 Aug 2015 11:17:20 -0700
+Subject: [PATCH 2/3] ARM: qcom: add SMEM device node to IPQ806x dts
+
+SMEM is used on IPQ806x to store various board related information such
+as boot device and flash partition layout. We'll declare it as a device
+so we can make use of it thanks to the new SMEM soc driver.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -54,7 +54,7 @@
+ no-map;
+ };
+
+- smem@41000000 {
++ smem: smem@41000000 {
+ reg = <0x41000000 0x200000>;
+ no-map;
+ };
+@@ -304,4 +304,10 @@
+
+ #hwlock-cells = <1>;
+ };
++
++ smem {
++ compatible = "qcom,smem";
++ memory-region = <&smem>;
++ hwlocks = <&sfpb_mutex 3>;
++ };
+ };
--- /dev/null
+From 0501f76b138cf1dc11a313bb7a094da524b79337 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 13 Aug 2015 09:53:14 -0700
+Subject: [PATCH 3/3] mtd: add SMEM parser for QCOM platforms
+
+On QCOM platforms using MTD devices storage (such as IPQ806x), SMEM is
+used to store partition layout. This new parser can now be used to read
+SMEM and use it to register an MTD layout according to its content.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/mtd/Kconfig | 7 ++
+ drivers/mtd/Makefile | 1 +
+ drivers/mtd/qcom_smem_part.c | 231 +++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 239 insertions(+)
+ create mode 100644 drivers/mtd/qcom_smem_part.c
+
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -200,6 +200,13 @@ config MTD_MYLOADER_PARTS
+ You will still need the parsing functions to be called by the driver
+ for your particular device. It won't happen automatically.
+
++config MTD_QCOM_SMEM_PARTS
++ tristate "QCOM SMEM partitioning support"
++ depends on QCOM_SMEM
++ help
++ This provides partitions parser for QCOM devices using SMEM
++ such as IPQ806x.
++
+ comment "User Modules And Translation Layers"
+
+ #
+--- /dev/null
++++ b/drivers/mtd/qcom_smem_part.c
+@@ -0,0 +1,231 @@
++/*
++ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/device.h>
++#include <linux/slab.h>
++
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <linux/spi/spi.h>
++#include <linux/module.h>
++
++#include <linux/soc/qcom/smem.h>
++
++/* Processor/host identifier for the application processor */
++#define SMEM_HOST_APPS 0
++
++/* SMEM items index */
++#define SMEM_AARM_PARTITION_TABLE 9
++#define SMEM_BOOT_FLASH_TYPE 421
++#define SMEM_BOOT_FLASH_BLOCK_SIZE 424
++
++/* SMEM Flash types */
++#define SMEM_FLASH_NAND 2
++#define SMEM_FLASH_SPI 6
++
++#define SMEM_PART_NAME_SZ 16
++#define SMEM_PARTS_MAX 32
++
++struct smem_partition {
++ char name[SMEM_PART_NAME_SZ];
++ __le32 start;
++ __le32 size;
++ __le32 attr;
++};
++
++struct smem_partition_table {
++ u8 magic[8];
++ __le32 version;
++ __le32 len;
++ struct smem_partition parts[SMEM_PARTS_MAX];
++};
++
++/* SMEM Magic values in partition table */
++static const u8 SMEM_PTABLE_MAGIC[] = {
++ 0xaa, 0x73, 0xee, 0x55,
++ 0xdb, 0xbd, 0x5e, 0xe3,
++};
++
++static int qcom_smem_get_flash_blksz(u64 **smem_blksz)
++{
++ int ret;
++ size_t size;
++
++ ret = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_BLOCK_SIZE,
++ (void **) smem_blksz, &size);
++
++ if (ret < 0) {
++ pr_err("Unable to read flash blksz from SMEM\n");
++ return -ENOENT;
++ }
++
++ if (size != sizeof(**smem_blksz)) {
++ pr_err("Invalid flash blksz size in SMEM\n");
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int qcom_smem_get_flash_type(u64 **smem_flash_type)
++{
++ int ret;
++ size_t size;
++
++ ret = qcom_smem_get(SMEM_HOST_APPS, SMEM_BOOT_FLASH_TYPE,
++ (void **) smem_flash_type, &size);
++
++ if (ret < 0) {
++ pr_err("Unable to read flash type from SMEM\n");
++ return -ENOENT;
++ }
++
++ if (size != sizeof(**smem_flash_type)) {
++ pr_err("Invalid flash type size in SMEM\n");
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int qcom_smem_get_flash_partitions(struct smem_partition_table **pparts)
++{
++ int ret;
++ size_t size;
++
++ ret = qcom_smem_get(SMEM_HOST_APPS, SMEM_AARM_PARTITION_TABLE,
++ (void **) pparts, &size);
++
++ if (ret < 0) {
++ pr_err("Unable to read partition table from SMEM\n");
++ return -ENOENT;
++ }
++
++ return 0;
++}
++
++static int of_dev_node_match(struct device *dev, void *data)
++{
++ return dev->of_node == data;
++}
++
++static bool is_spi_device(struct device_node *np)
++{
++ struct device *dev;
++
++ dev = bus_find_device(&spi_bus_type, NULL, np, of_dev_node_match);
++ if (!dev)
++ return false;
++
++ put_device(dev);
++ return true;
++}
++
++static int parse_qcom_smem_partitions(struct mtd_info *master,
++ struct mtd_partition **pparts,
++ struct mtd_part_parser_data *data)
++{
++ struct smem_partition_table *smem_parts;
++ u64 *smem_flash_type, *smem_blksz;
++ struct mtd_partition *mtd_parts;
++ struct device_node *of_node = data->of_node;
++ int i, ret;
++
++ /*
++ * SMEM will only store the partition table of the boot device.
++ * If this is not the boot device, do not return any partition.
++ */
++ ret = qcom_smem_get_flash_type(&smem_flash_type);
++ if (ret < 0)
++ return ret;
++
++ if ((*smem_flash_type == SMEM_FLASH_NAND && !mtd_type_is_nand(master))
++ || (*smem_flash_type == SMEM_FLASH_SPI && !is_spi_device(of_node)))
++ return 0;
++
++ /*
++ * Just for sanity purpose, make sure the block size in SMEM matches the
++ * block size of the MTD device
++ */
++ ret = qcom_smem_get_flash_blksz(&smem_blksz);
++ if (ret < 0)
++ return ret;
++
++ if (*smem_blksz != master->erasesize) {
++ pr_err("SMEM block size differs from MTD block size\n");
++ return -EINVAL;
++ }
++
++ /* Get partition pointer from SMEM */
++ ret = qcom_smem_get_flash_partitions(&smem_parts);
++ if (ret < 0)
++ return ret;
++
++ if (memcmp(SMEM_PTABLE_MAGIC, smem_parts->magic,
++ sizeof(SMEM_PTABLE_MAGIC))) {
++ pr_err("SMEM partition magic invalid\n");
++ return -EINVAL;
++ }
++
++ /* Allocate and populate the mtd structures */
++ mtd_parts = kcalloc(le32_to_cpu(smem_parts->len), sizeof(*mtd_parts),
++ GFP_KERNEL);
++ if (!mtd_parts)
++ return -ENOMEM;
++
++ for (i = 0; i < smem_parts->len; i++) {
++ struct smem_partition *s_part = &smem_parts->parts[i];
++ struct mtd_partition *m_part = &mtd_parts[i];
++
++ m_part->name = s_part->name;
++ m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
++ m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
++
++ /*
++ * The last SMEM partition may have its size marked as
++ * something like 0xffffffff, which means "until the end of the
++ * flash device". In this case, truncate it.
++ */
++ if (m_part->offset + m_part->size > master->size)
++ m_part->size = master->size - m_part->offset;
++ }
++
++ *pparts = mtd_parts;
++
++ return smem_parts->len;
++}
++
++static struct mtd_part_parser qcom_smem_parser = {
++ .owner = THIS_MODULE,
++ .parse_fn = parse_qcom_smem_partitions,
++ .name = "qcom-smem",
++};
++
++static int __init qcom_smem_parser_init(void)
++{
++ register_mtd_parser(&qcom_smem_parser);
++ return 0;
++}
++
++static void __exit qcom_smem_parser_exit(void)
++{
++ deregister_mtd_parser(&qcom_smem_parser);
++}
++
++module_init(qcom_smem_parser_init);
++module_exit(qcom_smem_parser_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Mathieu Olivari <mathieu@codeaurora.org>");
++MODULE_DESCRIPTION("Parsing code for SMEM based partition tables");
+--- a/drivers/mtd/Makefile
++++ b/drivers/mtd/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o
+ obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o
+ obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm47xxpart.o
+ obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
++obj-$(CONFIG_MTD_QCOM_SMEM_PARTS) += qcom_smem_part.o
+
+ # 'Users' - code which presents functionality to userspace.
+ obj-$(CONFIG_MTD_BLKDEVS) += mtd_blkdevs.o
--- /dev/null
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -256,4 +256,15 @@ config PHY_STIH41X_USB
+ Enable this to support the USB transceiver that is part of
+ STMicroelectronics STiH41x SoC series.
+
++config PHY_QCOM_DWC3
++ tristate "QCOM DWC3 USB PHY support"
++ depends on ARCH_QCOM
++ depends on HAS_IOMEM
++ depends on OF
++ select GENERIC_PHY
++ help
++ This option enables support for the Synopsis PHYs present inside the
++ Qualcomm USB3.0 DWC3 controller. This driver supports both HS and SS
++ PHY controllers.
++
+ endmenu
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -31,3 +31,4 @@ obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) +=
+ obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
+ obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o
+ obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o
++obj-$(CONFIG_PHY_QCOM_DWC3) += phy-qcom-dwc3.o
+--- /dev/null
++++ b/drivers/phy/phy-qcom-dwc3.c
+@@ -0,0 +1,483 @@
++/* Copyright (c) 2013-2014, Code Aurora Forum. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++
++/**
++ * USB QSCRATCH Hardware registers
++ */
++#define QSCRATCH_GENERAL_CFG (0x08)
++#define HSUSB_PHY_CTRL_REG (0x10)
++
++/* PHY_CTRL_REG */
++#define HSUSB_CTRL_DMSEHV_CLAMP BIT(24)
++#define HSUSB_CTRL_USB2_SUSPEND BIT(23)
++#define HSUSB_CTRL_UTMI_CLK_EN BIT(21)
++#define HSUSB_CTRL_UTMI_OTG_VBUS_VALID BIT(20)
++#define HSUSB_CTRL_USE_CLKCORE BIT(18)
++#define HSUSB_CTRL_DPSEHV_CLAMP BIT(17)
++#define HSUSB_CTRL_COMMONONN BIT(11)
++#define HSUSB_CTRL_ID_HV_CLAMP BIT(9)
++#define HSUSB_CTRL_OTGSESSVLD_CLAMP BIT(8)
++#define HSUSB_CTRL_CLAMP_EN BIT(7)
++#define HSUSB_CTRL_RETENABLEN BIT(1)
++#define HSUSB_CTRL_POR BIT(0)
++
++/* QSCRATCH_GENERAL_CFG */
++#define HSUSB_GCFG_XHCI_REV BIT(2)
++
++/**
++ * USB QSCRATCH Hardware registers
++ */
++#define SSUSB_PHY_CTRL_REG (0x00)
++#define SSUSB_PHY_PARAM_CTRL_1 (0x04)
++#define SSUSB_PHY_PARAM_CTRL_2 (0x08)
++#define CR_PROTOCOL_DATA_IN_REG (0x0c)
++#define CR_PROTOCOL_DATA_OUT_REG (0x10)
++#define CR_PROTOCOL_CAP_ADDR_REG (0x14)
++#define CR_PROTOCOL_CAP_DATA_REG (0x18)
++#define CR_PROTOCOL_READ_REG (0x1c)
++#define CR_PROTOCOL_WRITE_REG (0x20)
++
++/* PHY_CTRL_REG */
++#define SSUSB_CTRL_REF_USE_PAD BIT(28)
++#define SSUSB_CTRL_TEST_POWERDOWN BIT(27)
++#define SSUSB_CTRL_LANE0_PWR_PRESENT BIT(24)
++#define SSUSB_CTRL_SS_PHY_EN BIT(8)
++#define SSUSB_CTRL_SS_PHY_RESET BIT(7)
++
++/* SSPHY control registers */
++#define SSPHY_CTRL_RX_OVRD_IN_HI(lane) (0x1006 + 0x100 * lane)
++#define SSPHY_CTRL_TX_OVRD_DRV_LO(lane) (0x1002 + 0x100 * lane)
++
++/* RX OVRD IN HI bits */
++#define RX_OVRD_IN_HI_RX_RESET_OVRD BIT(13)
++#define RX_OVRD_IN_HI_RX_RX_RESET BIT(12)
++#define RX_OVRD_IN_HI_RX_EQ_OVRD BIT(11)
++#define RX_OVRD_IN_HI_RX_EQ_MASK 0x0700
++#define RX_OVRD_IN_HI_RX_EQ_SHIFT 8
++#define RX_OVRD_IN_HI_RX_EQ_EN_OVRD BIT(7)
++#define RX_OVRD_IN_HI_RX_EQ_EN BIT(6)
++#define RX_OVRD_IN_HI_RX_LOS_FILTER_OVRD BIT(5)
++#define RX_OVRD_IN_HI_RX_LOS_FILTER_MASK 0x0018
++#define RX_OVRD_IN_HI_RX_RATE_OVRD BIT(2)
++#define RX_OVRD_IN_HI_RX_RATE_MASK 0x0003
++
++/* TX OVRD DRV LO register bits */
++#define TX_OVRD_DRV_LO_AMPLITUDE_MASK 0x007F
++#define TX_OVRD_DRV_LO_PREEMPH_MASK 0x3F80
++#define TX_OVRD_DRV_LO_PREEMPH_SHIFT 7
++#define TX_OVRD_DRV_LO_EN BIT(14)
++
++struct qcom_dwc3_usb_phy {
++ void __iomem *base;
++ struct device *dev;
++ struct phy *phy;
++
++ int (*phy_init)(struct qcom_dwc3_usb_phy *phy_dwc3);
++ int (*phy_exit)(struct qcom_dwc3_usb_phy *phy_dwc3);
++
++ struct clk *xo_clk;
++ struct clk *ref_clk;
++};
++
++/**
++ * Write register and read back masked value to confirm it is written
++ *
++ * @base - QCOM DWC3 PHY base virtual address.
++ * @offset - register offset.
++ * @mask - register bitmask specifying what should be updated
++ * @val - value to write.
++ */
++static inline void qcom_dwc3_phy_write_readback(
++ struct qcom_dwc3_usb_phy *phy_dwc3, u32 offset,
++ const u32 mask, u32 val)
++{
++ u32 write_val, tmp = readl(phy_dwc3->base + offset);
++
++ tmp &= ~mask; /* retain other bits */
++ write_val = tmp | val;
++
++ writel(write_val, phy_dwc3->base + offset);
++
++ /* Read back to see if val was written */
++ tmp = readl(phy_dwc3->base + offset);
++ tmp &= mask; /* clear other bits */
++
++ if (tmp != val)
++ dev_err(phy_dwc3->dev, "write: %x to QSCRATCH: %x FAILED\n",
++ val, offset);
++}
++
++static int wait_for_latch(void __iomem *addr)
++{
++ u32 retry = 10;
++
++ while (true) {
++ if (!readl(addr))
++ break;
++
++ if (--retry == 0)
++ return -ETIMEDOUT;
++
++ usleep_range(10, 20);
++ }
++
++ return 0;
++}
++
++/**
++ * Write SSPHY register
++ *
++ * @base - QCOM DWC3 PHY base virtual address.
++ * @addr - SSPHY address to write.
++ * @val - value to write.
++ */
++static int qcom_dwc3_ss_write_phycreg(void __iomem *base, u32 addr, u32 val)
++{
++ int ret;
++
++ writel(addr, base + CR_PROTOCOL_DATA_IN_REG);
++ writel(0x1, base + CR_PROTOCOL_CAP_ADDR_REG);
++
++ ret = wait_for_latch(base + CR_PROTOCOL_CAP_ADDR_REG);
++ if (ret)
++ goto err_wait;
++
++ writel(val, base + CR_PROTOCOL_DATA_IN_REG);
++ writel(0x1, base + CR_PROTOCOL_CAP_DATA_REG);
++
++ ret = wait_for_latch(base + CR_PROTOCOL_CAP_DATA_REG);
++ if (ret)
++ goto err_wait;
++
++ writel(0x1, base + CR_PROTOCOL_WRITE_REG);
++
++ ret = wait_for_latch(base + CR_PROTOCOL_WRITE_REG);
++
++err_wait:
++ return ret;
++}
++
++/**
++ * Read SSPHY register.
++ *
++ * @base - QCOM DWC3 PHY base virtual address.
++ * @addr - SSPHY address to read.
++ */
++static int qcom_dwc3_ss_read_phycreg(void __iomem *base, u32 addr, u32 *val)
++{
++ int ret;
++ bool first_read = true;
++
++ writel(addr, base + CR_PROTOCOL_DATA_IN_REG);
++ writel(0x1, base + CR_PROTOCOL_CAP_ADDR_REG);
++
++ ret = wait_for_latch(base + CR_PROTOCOL_CAP_ADDR_REG);
++ if (ret)
++ goto err_wait;
++
++ /*
++ * Due to hardware bug, first read of SSPHY register might be
++ * incorrect. Hence as workaround, SW should perform SSPHY register
++ * read twice, but use only second read and ignore first read.
++ */
++retry:
++ writel(0x1, base + CR_PROTOCOL_READ_REG);
++
++ ret = wait_for_latch(base + CR_PROTOCOL_READ_REG);
++ if (ret)
++ goto err_wait;
++
++ if (first_read) {
++ readl(base + CR_PROTOCOL_DATA_OUT_REG);
++ first_read = false;
++ goto retry;
++ }
++
++ *val = readl(base + CR_PROTOCOL_DATA_OUT_REG);
++
++err_wait:
++ return ret;
++}
++
++static int qcom_dwc3_phy_power_on(struct phy *phy)
++{
++ int ret;
++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
++
++ ret = clk_prepare_enable(phy_dwc3->xo_clk);
++ if (ret)
++ return ret;
++
++ ret = clk_prepare_enable(phy_dwc3->ref_clk);
++ if (ret)
++ clk_disable_unprepare(phy_dwc3->xo_clk);
++
++ return ret;
++}
++
++static int qcom_dwc3_phy_power_off(struct phy *phy)
++{
++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
++
++ clk_disable_unprepare(phy_dwc3->ref_clk);
++ clk_disable_unprepare(phy_dwc3->xo_clk);
++
++ return 0;
++}
++
++static int qcom_dwc3_hs_phy_init(struct qcom_dwc3_usb_phy *phy_dwc3)
++{
++ u32 val;
++
++ /*
++ * HSPHY Initialization: Enable UTMI clock, select 19.2MHz fsel
++ * enable clamping, and disable RETENTION (power-on default is ENABLED)
++ */
++ val = HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_DMSEHV_CLAMP |
++ HSUSB_CTRL_RETENABLEN | HSUSB_CTRL_COMMONONN |
++ HSUSB_CTRL_OTGSESSVLD_CLAMP | HSUSB_CTRL_ID_HV_CLAMP |
++ HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_UTMI_OTG_VBUS_VALID |
++ HSUSB_CTRL_UTMI_CLK_EN | HSUSB_CTRL_CLAMP_EN | 0x70;
++
++ /* use core clock if external reference is not present */
++ if (!phy_dwc3->xo_clk)
++ val |= HSUSB_CTRL_USE_CLKCORE;
++
++ writel(val, phy_dwc3->base + HSUSB_PHY_CTRL_REG);
++ usleep_range(2000, 2200);
++
++ /* Disable (bypass) VBUS and ID filters */
++ writel(HSUSB_GCFG_XHCI_REV, phy_dwc3->base + QSCRATCH_GENERAL_CFG);
++
++ return 0;
++}
++
++static int qcom_dwc3_ss_phy_init(struct qcom_dwc3_usb_phy *phy_dwc3)
++{
++ int ret;
++ u32 data = 0;
++
++ /* reset phy */
++ data = readl_relaxed(phy_dwc3->base + SSUSB_PHY_CTRL_REG);
++ writel_relaxed(data | SSUSB_CTRL_SS_PHY_RESET,
++ phy_dwc3->base + SSUSB_PHY_CTRL_REG);
++ usleep_range(2000, 2200);
++ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
++
++ /* clear REF_PAD if we don't have XO clk */
++ if (!phy_dwc3->xo_clk)
++ data &= ~SSUSB_CTRL_REF_USE_PAD;
++ else
++ data |= SSUSB_CTRL_REF_USE_PAD;
++
++ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
++ msleep(30);
++
++ data |= SSUSB_CTRL_SS_PHY_EN | SSUSB_CTRL_LANE0_PWR_PRESENT;
++ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
++
++ /*
++ * Fix RX Equalization setting as follows
++ * LANE0.RX_OVRD_IN_HI. RX_EQ_EN set to 0
++ * LANE0.RX_OVRD_IN_HI.RX_EQ_EN_OVRD set to 1
++ * LANE0.RX_OVRD_IN_HI.RX_EQ set to 3
++ * LANE0.RX_OVRD_IN_HI.RX_EQ_OVRD set to 1
++ */
++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base,
++ SSPHY_CTRL_RX_OVRD_IN_HI(0), &data);
++ if (ret)
++ goto err_phy_trans;
++
++ data &= ~RX_OVRD_IN_HI_RX_EQ_EN;
++ data |= RX_OVRD_IN_HI_RX_EQ_EN_OVRD;
++ data &= ~RX_OVRD_IN_HI_RX_EQ_MASK;
++ data |= 0x3 << RX_OVRD_IN_HI_RX_EQ_SHIFT;
++ data |= RX_OVRD_IN_HI_RX_EQ_OVRD;
++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3->base,
++ SSPHY_CTRL_RX_OVRD_IN_HI(0), data);
++ if (ret)
++ goto err_phy_trans;
++
++ /*
++ * Set EQ and TX launch amplitudes as follows
++ * LANE0.TX_OVRD_DRV_LO.PREEMPH set to 22
++ * LANE0.TX_OVRD_DRV_LO.AMPLITUDE set to 127
++ * LANE0.TX_OVRD_DRV_LO.EN set to 1.
++ */
++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base,
++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), &data);
++ if (ret)
++ goto err_phy_trans;
++
++ data &= ~TX_OVRD_DRV_LO_PREEMPH_MASK;
++ data |= 0x16 << TX_OVRD_DRV_LO_PREEMPH_SHIFT;
++ data &= ~TX_OVRD_DRV_LO_AMPLITUDE_MASK;
++ data |= 0x7f;
++ data |= TX_OVRD_DRV_LO_EN;
++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3->base,
++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), data);
++ if (ret)
++ goto err_phy_trans;
++
++ /*
++ * Set the QSCRATCH PHY_PARAM_CTRL1 parameters as follows
++ * TX_FULL_SWING [26:20] amplitude to 127
++ * TX_DEEMPH_3_5DB [13:8] to 22
++ * LOS_BIAS [2:0] to 0x5
++ */
++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_PARAM_CTRL_1,
++ 0x07f03f07, 0x07f01605);
++
++err_phy_trans:
++ return ret;
++}
++
++static int qcom_dwc3_ss_phy_exit(struct qcom_dwc3_usb_phy *phy_dwc3)
++{
++ /* Sequence to put SSPHY in low power state:
++ * 1. Clear REF_PHY_EN in PHY_CTRL_REG
++ * 2. Clear REF_USE_PAD in PHY_CTRL_REG
++ * 3. Set TEST_POWERED_DOWN in PHY_CTRL_REG to enable PHY retention
++ * 4. Disable SSPHY ref clk
++ */
++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
++ SSUSB_CTRL_SS_PHY_EN, 0x0);
++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
++ SSUSB_CTRL_REF_USE_PAD, 0x0);
++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
++ 0x0, SSUSB_CTRL_TEST_POWERDOWN);
++
++ return 0;
++}
++
++static int qcom_dwc3_phy_init(struct phy *phy)
++{
++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
++
++ if (phy_dwc3->phy_init)
++ return phy_dwc3->phy_init(phy_dwc3);
++
++ return 0;
++}
++
++static int qcom_dwc3_phy_exit(struct phy *phy)
++{
++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
++
++ if (phy_dwc3->phy_exit)
++ return qcom_dwc3_ss_phy_exit(phy_dwc3);
++
++ return 0;
++}
++
++static struct phy_ops qcom_dwc3_phy_ops = {
++ .init = qcom_dwc3_phy_init,
++ .exit = qcom_dwc3_phy_exit,
++ .power_on = qcom_dwc3_phy_power_on,
++ .power_off = qcom_dwc3_phy_power_off,
++ .owner = THIS_MODULE,
++};
++
++static const struct of_device_id qcom_dwc3_phy_table[] = {
++ { .compatible = "qcom,dwc3-hs-usb-phy", },
++ { .compatible = "qcom,dwc3-ss-usb-phy", },
++ { /* Sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, qcom_dwc3_phy_table);
++
++static int qcom_dwc3_phy_probe(struct platform_device *pdev)
++{
++ struct qcom_dwc3_usb_phy *phy_dwc3;
++ struct phy_provider *phy_provider;
++ struct resource *res;
++
++ phy_dwc3 = devm_kzalloc(&pdev->dev, sizeof(*phy_dwc3), GFP_KERNEL);
++ if (!phy_dwc3)
++ return -ENOMEM;
++
++ platform_set_drvdata(pdev, phy_dwc3);
++
++ phy_dwc3->dev = &pdev->dev;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ phy_dwc3->base = devm_ioremap_resource(phy_dwc3->dev, res);
++ if (IS_ERR(phy_dwc3->base))
++ return PTR_ERR(phy_dwc3->base);
++
++ phy_dwc3->ref_clk = devm_clk_get(phy_dwc3->dev, "ref");
++ if (IS_ERR(phy_dwc3->ref_clk)) {
++ dev_dbg(phy_dwc3->dev, "cannot get reference clock\n");
++ return PTR_ERR(phy_dwc3->ref_clk);
++ }
++
++ if (of_device_is_compatible(pdev->dev.of_node,
++ "qcom,dwc3-hs-usb-phy")) {
++ clk_set_rate(phy_dwc3->ref_clk, 60000000);
++ phy_dwc3->phy_init = qcom_dwc3_hs_phy_init;
++ } else if (of_device_is_compatible(pdev->dev.of_node,
++ "qcom,dwc3-ss-usb-phy")) {
++ phy_dwc3->phy_init = qcom_dwc3_ss_phy_init;
++ phy_dwc3->phy_exit = qcom_dwc3_ss_phy_exit;
++ clk_set_rate(phy_dwc3->ref_clk, 125000000);
++ } else {
++ dev_err(phy_dwc3->dev, "Unknown phy\n");
++ return -EINVAL;
++ }
++
++ phy_dwc3->xo_clk = devm_clk_get(phy_dwc3->dev, "xo");
++ if (IS_ERR(phy_dwc3->xo_clk)) {
++ dev_dbg(phy_dwc3->dev, "cannot get TCXO clock\n");
++ phy_dwc3->xo_clk = NULL;
++ }
++
++ phy_dwc3->phy = devm_phy_create(phy_dwc3->dev, NULL, &qcom_dwc3_phy_ops,
++ NULL);
++
++ if (IS_ERR(phy_dwc3->phy))
++ return PTR_ERR(phy_dwc3->phy);
++
++ phy_set_drvdata(phy_dwc3->phy, phy_dwc3);
++
++ phy_provider = devm_of_phy_provider_register(phy_dwc3->dev,
++ of_phy_simple_xlate);
++
++ if (IS_ERR(phy_provider))
++ return PTR_ERR(phy_provider);
++
++ return 0;
++}
++
++static struct platform_driver qcom_dwc3_phy_driver = {
++ .probe = qcom_dwc3_phy_probe,
++ .driver = {
++ .name = "qcom-dwc3-usb-phy",
++ .owner = THIS_MODULE,
++ .of_match_table = qcom_dwc3_phy_table,
++ },
++};
++
++module_platform_driver(qcom_dwc3_phy_driver);
++
++MODULE_ALIAS("platform:phy-qcom-dwc3");
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>");
++MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
++MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver");
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -91,5 +91,29 @@
+ sata@29000000 {
+ status = "ok";
+ };
++
++ phy@100f8800 { /* USB3 port 1 HS phy */
++ status = "ok";
++ };
++
++ phy@100f8830 { /* USB3 port 1 SS phy */
++ status = "ok";
++ };
++
++ phy@110f8800 { /* USB3 port 0 HS phy */
++ status = "ok";
++ };
++
++ phy@110f8830 { /* USB3 port 0 SS phy */
++ status = "ok";
++ };
++
++ usb30@0 {
++ status = "ok";
++ };
++
++ usb30@1 {
++ status = "ok";
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -296,6 +296,91 @@
+ compatible = "syscon";
+ reg = <0x01200600 0x100>;
+ };
++
++ hs_phy_1: phy@100f8800 {
++ compatible = "qcom,dwc3-hs-usb-phy";
++ reg = <0x100f8800 0x30>;
++ clocks = <&gcc USB30_1_UTMI_CLK>;
++ clock-names = "ref";
++ #phy-cells = <0>;
++
++ status = "disabled";
++ };
++
++ ss_phy_1: phy@100f8830 {
++ compatible = "qcom,dwc3-ss-usb-phy";
++ reg = <0x100f8830 0x30>;
++ clocks = <&gcc USB30_1_MASTER_CLK>;
++ clock-names = "ref";
++ #phy-cells = <0>;
++
++ status = "disabled";
++ };
++
++ hs_phy_0: phy@110f8800 {
++ compatible = "qcom,dwc3-hs-usb-phy";
++ reg = <0x110f8800 0x30>;
++ clocks = <&gcc USB30_0_UTMI_CLK>;
++ clock-names = "ref";
++ #phy-cells = <0>;
++
++ status = "disabled";
++ };
++
++ ss_phy_0: phy@110f8830 {
++ compatible = "qcom,dwc3-ss-usb-phy";
++ reg = <0x110f8830 0x30>;
++ clocks = <&gcc USB30_0_MASTER_CLK>;
++ clock-names = "ref";
++ #phy-cells = <0>;
++
++ status = "disabled";
++ };
++
++ usb3_0: usb30@0 {
++ compatible = "qcom,dwc3";
++ #address-cells = <1>;
++ #size-cells = <1>;
++ clocks = <&gcc USB30_0_MASTER_CLK>;
++ clock-names = "core";
++
++ ranges;
++
++ status = "disabled";
++
++ dwc3@11000000 {
++ compatible = "snps,dwc3";
++ reg = <0x11000000 0xcd00>;
++ interrupts = <0 110 0x4>;
++ phys = <&hs_phy_0>, <&ss_phy_0>;
++ phy-names = "usb2-phy", "usb3-phy";
++ tx-fifo-resize;
++ dr_mode = "host";
++ };
++ };
++
++ usb3_1: usb30@1 {
++ compatible = "qcom,dwc3";
++ #address-cells = <1>;
++ #size-cells = <1>;
++ clocks = <&gcc USB30_1_MASTER_CLK>;
++ clock-names = "core";
++
++ ranges;
++
++ status = "disabled";
++
++ dwc3@10000000 {
++ compatible = "snps,dwc3";
++ reg = <0x10000000 0xcd00>;
++ interrupts = <0 205 0x4>;
++ phys = <&hs_phy_1>, <&ss_phy_1>;
++ phy-names = "usb2-phy", "usb3-phy";
++ tx-fifo-resize;
++ dr_mode = "host";
++ };
++ };
++
+ };
+
+ sfpb_mutex: sfpb-mutex {
--- /dev/null
+--- a/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt
++++ b/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt
+@@ -6,7 +6,8 @@ configuration settings. The mode settin
+ the 4 GSBI IOs.
+
+ Required properties:
+-- compatible: must contain "qcom,gsbi-v1.0.0" for APQ8064/IPQ8064
++- compatible: Should contain "qcom,gsbi-v1.0.0"
++- cell-index: Should contain the GSBI index
+ - reg: Address range for GSBI registers
+ - clocks: required clock
+ - clock-names: must contain "iface" entry
+@@ -16,6 +17,8 @@ Required properties:
+ Optional properties:
+ - qcom,crci : indicates CRCI MUX value for QUP CRCI ports. Please reference
+ dt-bindings/soc/qcom,gsbi.h for valid CRCI mux values.
++- syscon-tcsr: indicates phandle of TCSR syscon node. Required if child uses
++ dma.
+
+ Required properties if child node exists:
+ - #address-cells: Must be 1
+@@ -39,6 +42,7 @@ Example for APQ8064:
+
+ gsbi4@16300000 {
+ compatible = "qcom,gsbi-v1.0.0";
++ cell-index = <4>;
+ reg = <0x16300000 0x100>;
+ clocks = <&gcc GSBI4_H_CLK>;
+ clock-names = "iface";
+@@ -48,6 +52,8 @@ Example for APQ8064:
+ qcom,mode = <GSBI_PROT_I2C_UART>;
+ qcom,crci = <GSBI_CRCI_QUP>;
+
++ syscon-tcsr = <&tcsr>;
++
+ /* child nodes go under here */
+
+ i2c_qup4: i2c@16380000 {
+@@ -76,3 +82,9 @@ Example for APQ8064:
+ };
+ };
+
++ tcsr: syscon@1a400000 {
++ compatible = "qcom,apq8064-tcsr", "syscon";
++ reg = <0x1a400000 0x100>;
++ };
++
++
+--- a/drivers/soc/qcom/Kconfig
++++ b/drivers/soc/qcom/Kconfig
+@@ -4,6 +4,7 @@
+ config QCOM_GSBI
+ tristate "QCOM General Serial Bus Interface"
+ depends on ARCH_QCOM
++ select MFD_SYSCON
+ help
+ Say y here to enable GSBI support. The GSBI provides control
+ functions for connecting the underlying serial UART, SPI, and I2C
+--- a/drivers/soc/qcom/qcom_gsbi.c
++++ b/drivers/soc/qcom/qcom_gsbi.c
+@@ -18,22 +18,129 @@
+ #include <linux/of.h>
+ #include <linux/of_platform.h>
+ #include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/mfd/syscon.h>
++#include <dt-bindings/soc/qcom,gsbi.h>
+
+ #define GSBI_CTRL_REG 0x0000
+ #define GSBI_PROTOCOL_SHIFT 4
++#define MAX_GSBI 12
++
++#define TCSR_ADM_CRCI_BASE 0x70
++
++struct crci_config {
++ u32 num_rows;
++ const u32 (*array)[MAX_GSBI];
++};
++
++static const u32 crci_ipq8064[][MAX_GSBI] = {
++ {
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++ {
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++};
++
++static const struct crci_config config_ipq8064 = {
++ .num_rows = ARRAY_SIZE(crci_ipq8064),
++ .array = crci_ipq8064,
++};
++
++static const unsigned int crci_apq8064[][MAX_GSBI] = {
++ {
++ 0x001800, 0x006000, 0x000030, 0x0000c0,
++ 0x000300, 0x000400, 0x000000, 0x000000,
++ 0x000000, 0x000000, 0x000000, 0x000000
++ },
++ {
++ 0x000000, 0x000000, 0x000000, 0x000000,
++ 0x000000, 0x000020, 0x0000c0, 0x000000,
++ 0x000000, 0x000000, 0x000000, 0x000000
++ },
++};
++
++static const struct crci_config config_apq8064 = {
++ .num_rows = ARRAY_SIZE(crci_apq8064),
++ .array = crci_apq8064,
++};
++
++static const unsigned int crci_msm8960[][MAX_GSBI] = {
++ {
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000400, 0x000000, 0x000000,
++ 0x000000, 0x000000, 0x000000, 0x000000
++ },
++ {
++ 0x000000, 0x000000, 0x000000, 0x000000,
++ 0x000000, 0x000020, 0x0000c0, 0x000300,
++ 0x001800, 0x006000, 0x000000, 0x000000
++ },
++};
++
++static const struct crci_config config_msm8960 = {
++ .num_rows = ARRAY_SIZE(crci_msm8960),
++ .array = crci_msm8960,
++};
++
++static const unsigned int crci_msm8660[][MAX_GSBI] = {
++ { /* ADM 0 - B */
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++ { /* ADM 0 - B */
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++ { /* ADM 1 - A */
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++ { /* ADM 1 - B */
++ 0x000003, 0x00000c, 0x000030, 0x0000c0,
++ 0x000300, 0x000c00, 0x003000, 0x00c000,
++ 0x030000, 0x0c0000, 0x300000, 0xc00000
++ },
++};
++
++static const struct crci_config config_msm8660 = {
++ .num_rows = ARRAY_SIZE(crci_msm8660),
++ .array = crci_msm8660,
++};
+
+ struct gsbi_info {
+ struct clk *hclk;
+ u32 mode;
+ u32 crci;
++ struct regmap *tcsr;
++};
++
++static const struct of_device_id tcsr_dt_match[] = {
++ { .compatible = "qcom,tcsr-ipq8064", .data = &config_ipq8064},
++ { .compatible = "qcom,tcsr-apq8064", .data = &config_apq8064},
++ { .compatible = "qcom,tcsr-msm8960", .data = &config_msm8960},
++ { .compatible = "qcom,tcsr-msm8660", .data = &config_msm8660},
++ { },
+ };
+
+ static int gsbi_probe(struct platform_device *pdev)
+ {
+ struct device_node *node = pdev->dev.of_node;
++ struct device_node *tcsr_node;
++ const struct of_device_id *match;
+ struct resource *res;
+ void __iomem *base;
+ struct gsbi_info *gsbi;
++ int i;
++ u32 mask, gsbi_num;
++ const struct crci_config *config = NULL;
+
+ gsbi = devm_kzalloc(&pdev->dev, sizeof(*gsbi), GFP_KERNEL);
+
+@@ -45,6 +152,32 @@ static int gsbi_probe(struct platform_de
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
++ /* get the tcsr node and setup the config and regmap */
++ gsbi->tcsr = syscon_regmap_lookup_by_phandle(node, "syscon-tcsr");
++
++ if (!IS_ERR(gsbi->tcsr)) {
++ tcsr_node = of_parse_phandle(node, "syscon-tcsr", 0);
++ if (tcsr_node) {
++ match = of_match_node(tcsr_dt_match, tcsr_node);
++ if (match)
++ config = match->data;
++ else
++ dev_warn(&pdev->dev, "no matching TCSR\n");
++
++ of_node_put(tcsr_node);
++ }
++ }
++
++ if (of_property_read_u32(node, "cell-index", &gsbi_num)) {
++ dev_err(&pdev->dev, "missing cell-index\n");
++ return -EINVAL;
++ }
++
++ if (gsbi_num < 1 || gsbi_num > MAX_GSBI) {
++ dev_err(&pdev->dev, "invalid cell-index\n");
++ return -EINVAL;
++ }
++
+ if (of_property_read_u32(node, "qcom,mode", &gsbi->mode)) {
+ dev_err(&pdev->dev, "missing mode configuration\n");
+ return -EINVAL;
+@@ -64,6 +197,25 @@ static int gsbi_probe(struct platform_de
+ writel_relaxed((gsbi->mode << GSBI_PROTOCOL_SHIFT) | gsbi->crci,
+ base + GSBI_CTRL_REG);
+
++ /*
++ * modify tcsr to reflect mode and ADM CRCI mux
++ * Each gsbi contains a pair of bits, one for RX and one for TX
++ * SPI mode requires both bits cleared, otherwise they are set
++ */
++ if (config) {
++ for (i = 0; i < config->num_rows; i++) {
++ mask = config->array[i][gsbi_num - 1];
++
++ if (gsbi->mode == GSBI_PROT_SPI)
++ regmap_update_bits(gsbi->tcsr,
++ TCSR_ADM_CRCI_BASE + 4 * i, mask, 0);
++ else
++ regmap_update_bits(gsbi->tcsr,
++ TCSR_ADM_CRCI_BASE + 4 * i, mask, mask);
++
++ }
++ }
++
+ /* make sure the gsbi control write is not reordered */
+ wmb();
+
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -132,6 +132,7 @@
+
+ gsbi2: gsbi@12480000 {
+ compatible = "qcom,gsbi-v1.0.0";
++ cell-index = <2>;
+ reg = <0x12480000 0x100>;
+ clocks = <&gcc GSBI2_H_CLK>;
+ clock-names = "iface";
+@@ -140,6 +141,8 @@
+ ranges;
+ status = "disabled";
+
++ syscon-tcsr = <&tcsr>;
++
+ uart2: serial@12490000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x12490000 0x1000>,
+@@ -167,6 +170,7 @@
+
+ gsbi4: gsbi@16300000 {
+ compatible = "qcom,gsbi-v1.0.0";
++ cell-index = <4>;
+ reg = <0x16300000 0x100>;
+ clocks = <&gcc GSBI4_H_CLK>;
+ clock-names = "iface";
+@@ -175,6 +179,8 @@
+ ranges;
+ status = "disabled";
+
++ syscon-tcsr = <&tcsr>;
++
+ uart4: serial@16340000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x16340000 0x1000>,
+@@ -201,6 +207,7 @@
+
+ gsbi5: gsbi@1a200000 {
+ compatible = "qcom,gsbi-v1.0.0";
++ cell-index = <5>;
+ reg = <0x1a200000 0x100>;
+ clocks = <&gcc GSBI5_H_CLK>;
+ clock-names = "iface";
+@@ -209,6 +216,8 @@
+ ranges;
+ status = "disabled";
+
++ syscon-tcsr = <&tcsr>;
++
+ uart5: serial@1a240000 {
+ compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+ reg = <0x1a240000 0x1000>,
+@@ -279,6 +288,11 @@
+ status = "disabled";
+ };
+
++ tcsr: syscon@1a400000 {
++ compatible = "qcom,tcsr-ipq8064", "syscon";
++ reg = <0x1a400000 0x100>;
++ };
++
+ qcom,ssbi@500000 {
+ compatible = "qcom,ssbi";
+ reg = <0x00500000 0x1000>;
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326181
+Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:16 +0300
+
+Document Qualcomm PCIe driver devicetree bindings.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+.../devicetree/bindings/pci/qcom,pcie.txt | 231 ++++++++++++++++++++
+ 1 files changed, 231 insertions(+), 0 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+@@ -0,0 +1,231 @@
++* Qualcomm PCI express root complex
++
++- compatible:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Value shall include
++ - "qcom,pcie-v0" for apq/ipq8064
++ - "qcom,pcie-v1" for apq8084
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: Register ranges as listed in the reg-names property
++
++- reg-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Must include the following entries
++ - "parf" Qualcomm specific registers
++ - "dbi" Designware PCIe registers
++ - "elbi" External local bus interface registers
++ - "config" PCIe configuration space
++
++- device_type:
++ Usage: required
++ Value type: <string>
++ Definition: Should be "pci". As specified in designware-pcie.txt
++
++- #address-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set to 3. As specified in designware-pcie.txt
++
++- #size-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be set 2. As specified in designware-pcie.txt
++
++- ranges:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupts:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: MSI interrupt
++
++- interrupt-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain "msi"
++
++- #interrupt-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: Should be 1. As specified in designware-pcie.txt
++
++- interrupt-map-mask:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- interrupt-map:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: As specified in designware-pcie.txt
++
++- clocks:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and clock specifier pairs as listed
++ in clock-names property
++
++- clock-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0 and v1
++ - "iface" Configuration AHB clock
++
++ * should be populated for v0
++ - "core" Clocks the pcie hw block
++ - "phy" Clocks the pcie PHY block
++
++ * should be populated for v1
++ - "aux" Auxiliary (AUX) clock
++ - "bus_master" Master AXI clock
++ - "bus_slave" Slave AXI clock
++
++- resets:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and reset specifier pairs as listed
++ in reset-names property
++
++- reset-names:
++ Usage: required
++ Value type: <stringlist>
++ Definition: Should contain the following entries
++ * should be populated for v0
++ - "axi" AXI reset
++ - "ahb" AHB reset
++ - "por" POR reset
++ - "pci" PCI reset
++ - "phy" PHY reset
++
++ * should be populated for v1
++ - "core" Core reset
++
++- power-domains:
++ Usage: required (for v1 only)
++ Value type: <prop-encoded-array>
++ Definition: A phandle and power domain specifier pair to the
++ power domain which is responsible for collapsing
++ and restoring power to the peripheral
++
++- <name>-supply:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles to the power supply regulator(s)
++ * should be populated for v0 and v1
++ - "vdda" core analog power supply
++
++ * should be populated for v0
++ - "vdda_phy" analog power supply for PHY
++ - "vdda_refclk" analog power supply for IC which generate
++ reference clock
++
++- phys:
++ Usage: required (for v1 only)
++ Value type: <phandle>
++ Definition: List of phandle(s) as listed in phy-names property
++
++- phy-names:
++ Usage: required (for v1 only)
++ Value type: <stringlist>
++ Definition: Should contain "pciephy"
++
++- <name>-gpio:
++ Usage: optional
++ Value type: <prop-encoded-array>
++ Definition: List of phandle and gpio specifier pairs. Should contain
++ - "perst" PCIe endpoint reset signal line
++ - "pewake" PCIe endpoint wake signal line
++
++- pinctrl-0:
++ Usage: required
++ Value type: <phandle>
++ Definition: List of phandles pointing at a pin(s) configuration
++
++- pinctrl-names
++ Usage: required
++ Value type: <stringlist>
++ Definition: List of names of pinctrl-0 state
++
++* Example for v0
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++ };
++
++* Example for v1
++ pcie0@fc520000 {
++ compatible = "qcom,pcie-v1";
++ reg = <0xfc520000 0x2000>,
++ <0xff000000 0x1000>,
++ <0xff001000 0x1000>,
++ <0xff002000 0x2000>;
++ reg-names = "parf", "dbi", "elbi", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
++ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
++ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
++ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
++ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
++ <&gcc GCC_PCIE_0_AUX_CLK>;
++ clock-names = "iface", "master_bus", "slave_bus", "aux";
++ resets = <&gcc GCC_PCIE_0_BCR>;
++ reset-names = "core";
++ power-domains = <&gcc PCIE0_GDSC>;
++ vdda-supply = <&pma8084_l3>;
++ phys = <&pciephy0>;
++ phy-names = "pciephy";
++ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
++ pinctrl-0 = <&pcie0_pins_default>;
++ pinctrl-names = "default";
++ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,4/5] PCI: qcom: Add Qualcomm PCIe controller driver
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326161
+Message-Id: <1430743338-10441-5-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+ Mark Rutland <mark.rutland@arm.com>,
+ Grant Likely <grant.likely@linaro.org>,
+ Bjorn Helgaas <bhelgaas@google.com>,
+ Kishon Vijay Abraham I <kishon@ti.com>,
+ Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+ linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+ Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+ Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon, 4 May 2015 15:42:17 +0300
+
+The PCIe driver reuse the Designware common code for host
+and MSI initialization, and also program the Qualcomm
+application specific registers.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+MAINTAINERS | 7 +
+ drivers/pci/host/Kconfig | 9 +
+ drivers/pci/host/Makefile | 1 +
+ drivers/pci/host/pcie-qcom.c | 677 ++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 694 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/pci/host/pcie-qcom.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -7127,6 +7127,13 @@ L: linux-pci@vger.kernel.org
+ S: Maintained
+ F: drivers/pci/host/*spear*
+
++PCIE DRIVER FOR QUALCOMM MSM
++M: Stanimir Varbanov <svarbanov@mm-sol.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/pci/host/*qcom*
++
+ PCMCIA SUBSYSTEM
+ P: Linux PCMCIA Team
+ L: linux-pcmcia@lists.infradead.org
+--- a/drivers/pci/host/Kconfig
++++ b/drivers/pci/host/Kconfig
+@@ -91,4 +91,13 @@ config PCI_XGENE
+ There are 5 internal PCIe ports available. Each port is GEN3 capable
+ and have varied lanes from x1 to x8.
+
++config PCIE_QCOM
++ bool "Qualcomm PCIe controller"
++ depends on ARCH_QCOM && OF || (ARM && COMPILE_TEST)
++ select PCIE_DW
++ select PCIEPORTBUS
++ help
++ Say Y here to enable PCIe controller support on Qualcomm SoCs. The
++ PCIe controller use Designware core plus Qualcomm specific hardware
++ wrappers.
+ endmenu
+--- /dev/null
++++ b/drivers/pci/host/pcie-qcom.c
+@@ -0,0 +1,677 @@
++/*
++ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/phy/phy.h>
++#include <linux/regulator/consumer.h>
++#include <linux/reset.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#include "pcie-designware.h"
++
++#define PCIE20_PARF_PHY_CTRL 0x40
++#define PCIE20_PARF_PHY_REFCLK 0x4C
++#define PCIE20_PARF_DBI_BASE_ADDR 0x168
++#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
++#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
++
++#define PCIE20_ELBI_SYS_CTRL 0x04
++#define PCIE20_ELBI_SYS_STTS 0x08
++#define XMLH_LINK_UP BIT(10)
++
++#define PCIE20_CAP 0x70
++#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
++
++#define PERST_DELAY_MIN_US 1000
++#define PERST_DELAY_MAX_US 1005
++
++#define LINKUP_DELAY_MIN_US 5000
++#define LINKUP_DELAY_MAX_US 5100
++#define LINKUP_RETRIES_COUNT 20
++
++#define PCIE_V0 0 /* apq8064 */
++#define PCIE_V1 1 /* apq8084 */
++
++struct qcom_pcie_resources_v0 {
++ struct clk *iface_clk;
++ struct clk *core_clk;
++ struct clk *phy_clk;
++ struct reset_control *pci_reset;
++ struct reset_control *axi_reset;
++ struct reset_control *ahb_reset;
++ struct reset_control *por_reset;
++ struct reset_control *phy_reset;
++ struct regulator *vdda;
++ struct regulator *vdda_phy;
++ struct regulator *vdda_refclk;
++};
++
++struct qcom_pcie_resources_v1 {
++ struct clk *iface;
++ struct clk *aux;
++ struct clk *master_bus;
++ struct clk *slave_bus;
++ struct reset_control *core;
++ struct regulator *vdda;
++};
++
++union pcie_resources {
++ struct qcom_pcie_resources_v0 v0;
++ struct qcom_pcie_resources_v1 v1;
++};
++
++struct qcom_pcie {
++ struct pcie_port pp;
++ struct device *dev;
++ union pcie_resources res;
++ void __iomem *parf;
++ void __iomem *dbi;
++ void __iomem *elbi;
++ struct phy *phy;
++ struct gpio_desc *reset;
++ unsigned int version;
++};
++
++#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
++
++static inline void
++writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask)
++{
++ u32 val = readl(addr);
++
++ val &= ~clear_mask;
++ val |= set_mask;
++ writel(val, addr);
++}
++
++static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
++{
++ int val, active_low;
++
++ if (IS_ERR_OR_NULL(pcie->reset))
++ return;
++
++ active_low = gpiod_is_active_low(pcie->reset);
++
++ if (assert)
++ val = !!active_low;
++ else
++ val = !active_low;
++
++ gpiod_set_value(pcie->reset, val);
++
++ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
++}
++
++static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 1);
++}
++
++static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
++{
++ qcom_ep_reset_assert_deassert(pcie, 0);
++}
++
++static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
++{
++ struct pcie_port *pp = arg;
++
++ return dw_handle_msi_irq(pp);
++}
++
++static int qcom_pcie_link_up(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ u32 val = readl(pcie->dbi + PCIE20_CAP_LINKCTRLSTATUS);
++
++ return val & BIT(29) ? 1 : 0;
++}
++
++static void qcom_pcie_disable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++
++ reset_control_assert(res->pci_reset);
++ reset_control_assert(res->axi_reset);
++ reset_control_assert(res->ahb_reset);
++ reset_control_assert(res->por_reset);
++ reset_control_assert(res->pci_reset);
++ clk_disable_unprepare(res->iface_clk);
++ clk_disable_unprepare(res->core_clk);
++ clk_disable_unprepare(res->phy_clk);
++ regulator_disable(res->vdda);
++ regulator_disable(res->vdda_phy);
++ regulator_disable(res->vdda_refclk);
++}
++
++static void qcom_pcie_disable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++
++ reset_control_assert(res->core);
++ clk_disable_unprepare(res->slave_bus);
++ clk_disable_unprepare(res->master_bus);
++ clk_disable_unprepare(res->iface);
++ clk_disable_unprepare(res->aux);
++ regulator_disable(res->vdda);
++}
++
++static int qcom_pcie_enable_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ return ret;
++ }
++
++ ret = regulator_enable(res->vdda_refclk);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_refclk regulator\n");
++ goto err_refclk;
++ }
++
++ ret = regulator_enable(res->vdda_phy);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda_phy regulator\n");
++ goto err_vdda_phy;
++ }
++
++ ret = clk_prepare_enable(res->iface_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->core_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable core clock\n");
++ goto err_clk_core;
++ }
++
++ ret = clk_prepare_enable(res->phy_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable phy clock\n");
++ goto err_clk_phy;
++ }
++
++ ret = reset_control_deassert(res->ahb_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert ahb reset\n");
++ goto err_reset_ahb;
++ }
++
++ return 0;
++
++err_reset_ahb:
++ clk_disable_unprepare(res->phy_clk);
++err_clk_phy:
++ clk_disable_unprepare(res->core_clk);
++err_clk_core:
++ clk_disable_unprepare(res->iface_clk);
++err_iface:
++ regulator_disable(res->vdda_phy);
++err_vdda_phy:
++ regulator_disable(res->vdda_refclk);
++err_refclk:
++ regulator_disable(res->vdda);
++ return ret;
++}
++
++static int qcom_pcie_enable_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ ret = reset_control_deassert(res->core);
++ if (ret) {
++ dev_err(dev, "cannot deassert core reset\n");
++ return ret;
++ }
++
++ ret = clk_prepare_enable(res->aux);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable aux clock\n");
++ goto err_res;
++ }
++
++ ret = clk_prepare_enable(res->iface);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable iface clock\n");
++ goto err_aux;
++ }
++
++ ret = clk_prepare_enable(res->master_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable master_bus clock\n");
++ goto err_iface;
++ }
++
++ ret = clk_prepare_enable(res->slave_bus);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable slave_bus clock\n");
++ goto err_master;
++ }
++
++ ret = regulator_enable(res->vdda);
++ if (ret) {
++ dev_err(dev, "cannot enable vdda regulator\n");
++ goto err_slave;
++ }
++
++ return 0;
++
++err_slave:
++ clk_disable_unprepare(res->slave_bus);
++err_master:
++ clk_disable_unprepare(res->master_bus);
++err_iface:
++ clk_disable_unprepare(res->iface);
++err_aux:
++ clk_disable_unprepare(res->aux);
++err_res:
++ reset_control_assert(res->core);
++
++ return ret;
++}
++
++static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
++ if (IS_ERR(res->vdda_phy))
++ return PTR_ERR(res->vdda_phy);
++
++ res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
++ if (IS_ERR(res->vdda_refclk))
++ return PTR_ERR(res->vdda_refclk);
++
++ res->iface_clk = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface_clk))
++ return PTR_ERR(res->iface_clk);
++
++ res->core_clk = devm_clk_get(dev, "core");
++ if (IS_ERR(res->core_clk))
++ return PTR_ERR(res->core_clk);
++
++ res->phy_clk = devm_clk_get(dev, "phy");
++ if (IS_ERR(res->phy_clk))
++ return PTR_ERR(res->phy_clk);
++
++ res->pci_reset = devm_reset_control_get(dev, "pci");
++ if (IS_ERR(res->pci_reset))
++ return PTR_ERR(res->pci_reset);
++
++ res->axi_reset = devm_reset_control_get(dev, "axi");
++ if (IS_ERR(res->axi_reset))
++ return PTR_ERR(res->axi_reset);
++
++ res->ahb_reset = devm_reset_control_get(dev, "ahb");
++ if (IS_ERR(res->ahb_reset))
++ return PTR_ERR(res->ahb_reset);
++
++ res->por_reset = devm_reset_control_get(dev, "por");
++ if (IS_ERR(res->por_reset))
++ return PTR_ERR(res->por_reset);
++
++ res->phy_reset = devm_reset_control_get(dev, "phy");
++ if (IS_ERR(res->phy_reset))
++ return PTR_ERR(res->phy_reset);
++
++ return 0;
++}
++
++static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
++{
++ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
++ struct device *dev = pcie->dev;
++
++ res->vdda = devm_regulator_get(dev, "vdda");
++ if (IS_ERR(res->vdda))
++ return PTR_ERR(res->vdda);
++
++ res->iface = devm_clk_get(dev, "iface");
++ if (IS_ERR(res->iface))
++ return PTR_ERR(res->iface);
++
++ res->aux = devm_clk_get(dev, "aux");
++ if (IS_ERR(res->aux) && PTR_ERR(res->aux) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ else if (IS_ERR(res->aux))
++ res->aux = NULL;
++
++ res->master_bus = devm_clk_get(dev, "master_bus");
++ if (IS_ERR(res->master_bus))
++ return PTR_ERR(res->master_bus);
++
++ res->slave_bus = devm_clk_get(dev, "slave_bus");
++ if (IS_ERR(res->slave_bus))
++ return PTR_ERR(res->slave_bus);
++
++ res->core = devm_reset_control_get(dev, "core");
++ if (IS_ERR(res->core))
++ return PTR_ERR(res->core);
++
++ return 0;
++}
++
++static int qcom_pcie_enable_link_training(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct device *dev = pp->dev;
++ int retries;
++ u32 val;
++
++ /* enable link training */
++ writel_masked(pcie->elbi + PCIE20_ELBI_SYS_CTRL, 0, BIT(0));
++
++ /* wait for up to 100ms for the link to come up */
++ retries = LINKUP_RETRIES_COUNT;
++ do {
++ val = readl(pcie->elbi + PCIE20_ELBI_SYS_STTS);
++ if (val & XMLH_LINK_UP)
++ break;
++ usleep_range(LINKUP_DELAY_MIN_US, LINKUP_DELAY_MAX_US);
++ } while (retries--);
++
++ if (retries < 0 || !dw_pcie_link_up(pp)) {
++ dev_err(dev, "link initialization failed\n");
++ return -ENXIO;
++ }
++
++ return 0;
++}
++
++static void qcom_pcie_host_init_v1(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v1(pcie);
++ if (ret)
++ return;
++
++ /* change DBI base address */
++ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ writel_masked(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT,
++ 0, BIT(31));
++
++ ret = phy_init(pcie->phy);
++ if (ret)
++ goto err_res;
++
++ ret = phy_power_on(pcie->phy);
++ if (ret)
++ goto err_phy;
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++
++err:
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++err_phy:
++ phy_exit(pcie->phy);
++err_res:
++ qcom_pcie_disable_resources_v1(pcie);
++}
++
++static void qcom_pcie_host_init_v0(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
++ struct device *dev = pcie->dev;
++ int ret;
++
++ qcom_ep_reset_assert(pcie);
++
++ ret = qcom_pcie_enable_resources_v0(pcie);
++ if (ret)
++ return;
++
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
++
++ /* enable external reference clock */
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
++
++ ret = reset_control_deassert(res->phy_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert phy reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->pci_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert pci reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->por_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert por reset\n");
++ return;
++ }
++
++ ret = reset_control_deassert(res->axi_reset);
++ if (ret) {
++ dev_err(dev, "cannot deassert axi reset\n");
++ return;
++ }
++
++ /* wait 150ms for clock acquisition */
++ usleep_range(10000, 15000);
++
++ dw_pcie_setup_rc(pp);
++
++ if (IS_ENABLED(CONFIG_PCI_MSI))
++ dw_pcie_msi_init(pp);
++
++ qcom_ep_reset_deassert(pcie);
++
++ ret = qcom_pcie_enable_link_training(pp);
++ if (ret)
++ goto err;
++
++ return;
++err:
++ qcom_ep_reset_assert(pcie);
++ qcom_pcie_disable_resources_v0(pcie);
++}
++
++static void qcom_pcie_host_init(struct pcie_port *pp)
++{
++ struct qcom_pcie *pcie = to_qcom_pcie(pp);
++
++ if (pcie->version == PCIE_V0)
++ return qcom_pcie_host_init_v0(pp);
++ else
++ return qcom_pcie_host_init_v1(pp);
++}
++
++static int
++qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
++{
++ /* the device class is not reported correctly from the register */
++ if (where == PCI_CLASS_REVISION && size == 4) {
++ *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
++ *val &= ~(0xffff << 16);
++ *val |= PCI_CLASS_BRIDGE_PCI << 16;
++ return PCIBIOS_SUCCESSFUL;
++ }
++
++ return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
++ size, val);
++}
++
++static struct pcie_host_ops qcom_pcie_ops = {
++ .link_up = qcom_pcie_link_up,
++ .host_init = qcom_pcie_host_init,
++ .rd_own_conf = qcom_pcie_rd_own_conf,
++};
++
++static const struct of_device_id qcom_pcie_match[] = {
++ { .compatible = "qcom,pcie-v0", .data = (void *)PCIE_V0 },
++ { .compatible = "qcom,pcie-v1", .data = (void *)PCIE_V1 },
++ { }
++};
++
++static int qcom_pcie_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ const struct of_device_id *match;
++ struct resource *res;
++ struct qcom_pcie *pcie;
++ struct pcie_port *pp;
++ int ret;
++
++ match = of_match_node(qcom_pcie_match, dev->of_node);
++ if (!match)
++ return -ENXIO;
++
++ pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
++ if (!pcie)
++ return -ENOMEM;
++
++ pcie->version = (unsigned int)match->data;
++
++ pcie->reset = devm_gpiod_get_optional(dev, "perst");
++ if (IS_ERR(pcie->reset) && PTR_ERR(pcie->reset) == -EPROBE_DEFER)
++ return PTR_ERR(pcie->reset);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
++ pcie->parf = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->parf))
++ return PTR_ERR(pcie->parf);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
++ pcie->dbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->dbi))
++ return PTR_ERR(pcie->dbi);
++
++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
++ pcie->elbi = devm_ioremap_resource(dev, res);
++ if (IS_ERR(pcie->elbi))
++ return PTR_ERR(pcie->elbi);
++
++ pcie->phy = devm_phy_optional_get(dev, "pciephy");
++ if (IS_ERR(pcie->phy))
++ return PTR_ERR(pcie->phy);
++
++ pcie->dev = dev;
++
++ if (pcie->version == PCIE_V0)
++ ret = qcom_pcie_get_resources_v0(pcie);
++ else
++ ret = qcom_pcie_get_resources_v1(pcie);
++
++ if (ret)
++ return ret;
++
++ pp = &pcie->pp;
++ pp->dev = dev;
++ pp->dbi_base = pcie->dbi;
++ pp->root_bus_nr = -1;
++ pp->ops = &qcom_pcie_ops;
++
++ if (IS_ENABLED(CONFIG_PCI_MSI)) {
++ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
++ if (pp->msi_irq < 0) {
++ dev_err(dev, "cannot get msi irq\n");
++ return pp->msi_irq;
++ }
++
++ ret = devm_request_irq(dev, pp->msi_irq,
++ qcom_pcie_msi_irq_handler,
++ IRQF_SHARED, "qcom-pcie-msi", pp);
++ if (ret) {
++ dev_err(dev, "cannot request msi irq\n");
++ return ret;
++ }
++ }
++
++ ret = dw_pcie_host_init(pp);
++ if (ret) {
++ dev_err(dev, "cannot initialize host\n");
++ return ret;
++ }
++
++ platform_set_drvdata(pdev, pcie);
++
++ return 0;
++}
++
++static int qcom_pcie_remove(struct platform_device *pdev)
++{
++ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
++
++ qcom_ep_reset_assert(pcie);
++ phy_power_off(pcie->phy);
++ phy_exit(pcie->phy);
++ if (pcie->version == PCIE_V0)
++ qcom_pcie_disable_resources_v0(pcie);
++ else
++ qcom_pcie_disable_resources_v1(pcie);
++
++ return 0;
++}
++
++static struct platform_driver qcom_pcie_driver = {
++ .probe = qcom_pcie_probe,
++ .remove = qcom_pcie_remove,
++ .driver = {
++ .name = "qcom-pcie",
++ .of_match_table = qcom_pcie_match,
++ },
++};
++
++module_platform_driver(qcom_pcie_driver);
++
++MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
++MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:qcom-pcie");
+--- a/drivers/pci/host/Makefile
++++ b/drivers/pci/host/Makefile
+@@ -11,3 +11,4 @@ obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spe
+ obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
+ obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
+ obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
++obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
--- /dev/null
+From 5b40516b2f5fb9b2a7d6d3e2e924f12ec9d183a8 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:01:42 -0700
+Subject: [PATCH 8/9] ARM: dts: qcom: add pcie nodes to ipq806x platforms
+
+qcom-pcie driver now supports version 0 of the controller. This change
+adds the corresponding entries to the IPQ806x dtsi file and
+corresponding platform (AP148).
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 30 ++++++++
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 124 +++++++++++++++++++++++++++++++
+ 2 files changed, 154 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -115,5 +115,15 @@
+ usb30@1 {
+ status = "ok";
+ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ phy-tx0-term-offset = <7>;
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ phy-tx0-term-offset = <7>;
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -128,5 +128,17 @@
+ usb30@1 {
+ status = "ok";
+ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ };
++
++ pcie2: pci@1b900000 {
++ status = "ok";
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -3,6 +3,9 @@
+ #include "skeleton.dtsi"
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+ #include <dt-bindings/soc/qcom,gsbi.h>
++#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
++#include <dt-bindings/interrupt-controller/arm-gic.h>
++#include <dt-bindings/gpio/gpio.h>
+
+ / {
+ model = "Qualcomm IPQ8064";
+@@ -83,6 +86,33 @@
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <0 32 0x4>;
++
++ pcie0_pins: pcie0_pinmux {
++ mux {
++ pins = "gpio3";
++ function = "pcie1_rst";
++ drive-strength = <12>;
++ bias-disable;
++ };
++ };
++
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio48";
++ function = "pcie2_rst";
++ drive-strength = <12>;
++ bias-disable;
++ };
++ };
++
++ pcie2_pins: pcie2_pinmux {
++ mux {
++ pins = "gpio63";
++ function = "pcie3_rst";
++ drive-strength = <12>;
++ bias-disable;
++ };
++ };
+ };
+
+ intc: interrupt-controller@2000000 {
+@@ -311,6 +341,144 @@
+ reg = <0x01200600 0x100>;
+ };
+
++ pcie0: pci@1b500000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b500000 0x1000
++ 0x1b502000 0x80
++ 0x1b600000 0x100
++ 0x0ff00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <0>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0x0fe00000 0x0fe00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x08000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_A_CLK>,
++ <&gcc PCIE_H_CLK>,
++ <&gcc PCIE_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_ACLK_RESET>,
++ <&gcc PCIE_HCLK_RESET>,
++ <&gcc PCIE_POR_RESET>,
++ <&gcc PCIE_PCI_RESET>,
++ <&gcc PCIE_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ pinctrl-0 = <&pcie0_pins>;
++ pinctrl-names = "default";
++
++ perst-gpio = <&qcom_pinmux 3 GPIO_ACTIVE_LOW>;
++
++ status = "disabled";
++ };
++
++ pcie1: pci@1b700000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b700000 0x1000
++ 0x1b702000 0x80
++ 0x1b800000 0x100
++ 0x31f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <1>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0x31e00000 0x31e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x2e000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 57 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 58 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 59 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 60 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 61 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_1_A_CLK>,
++ <&gcc PCIE_1_H_CLK>,
++ <&gcc PCIE_1_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_1_ACLK_RESET>,
++ <&gcc PCIE_1_HCLK_RESET>,
++ <&gcc PCIE_1_POR_RESET>,
++ <&gcc PCIE_1_PCI_RESET>,
++ <&gcc PCIE_1_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++
++ perst-gpio = <&qcom_pinmux 48 GPIO_ACTIVE_LOW>;
++
++ status = "disabled";
++ };
++
++ pcie2: pci@1b900000 {
++ compatible = "qcom,pcie-v0";
++ reg = <0x1b900000 0x1000
++ 0x1b902000 0x80
++ 0x1ba00000 0x100
++ 0x35f00000 0x100000>;
++ reg-names = "dbi", "elbi", "parf", "config";
++ device_type = "pci";
++ linux,pci-domain = <2>;
++ bus-range = <0x00 0xff>;
++ num-lanes = <1>;
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ ranges = <0x81000000 0 0x35e00000 0x35e00000 0 0x00100000 /* downstream I/O */
++ 0x82000000 0 0x32000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
++
++ interrupts = <GIC_SPI 71 IRQ_TYPE_NONE>;
++ interrupt-names = "msi";
++ #interrupt-cells = <1>;
++ interrupt-map-mask = <0 0 0 0x7>;
++ interrupt-map = <0 0 0 1 &intc 0 72 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++ <0 0 0 2 &intc 0 73 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++ <0 0 0 3 &intc 0 74 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++ <0 0 0 4 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++
++ clocks = <&gcc PCIE_2_A_CLK>,
++ <&gcc PCIE_2_H_CLK>,
++ <&gcc PCIE_2_PHY_CLK>;
++ clock-names = "core", "iface", "phy";
++
++ resets = <&gcc PCIE_2_ACLK_RESET>,
++ <&gcc PCIE_2_HCLK_RESET>,
++ <&gcc PCIE_2_POR_RESET>,
++ <&gcc PCIE_2_PCI_RESET>,
++ <&gcc PCIE_2_PHY_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy";
++
++ pinctrl-0 = <&pcie2_pins>;
++ pinctrl-names = "default";
++
++ perst-gpio = <&qcom_pinmux 63 GPIO_ACTIVE_LOW>;
++
++ status = "disabled";
++ };
++
+ hs_phy_1: phy@100f8800 {
+ compatible = "qcom,dwc3-hs-usb-phy";
+ reg = <0x100f8800 0x30>;
--- /dev/null
+From f004aa1dec6e2e206be025de15b115d60f2b21e3 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:09:07 -0700
+Subject: [PATCH 9/9] ARM: qcom: automatically select PCI_DOMAINS if PCI is
+ enabled
+
+If multiple PCIe devices are present in the system, the kernel will
+panic at boot time when trying to scan the PCI buses. This happens on
+IPQ806x based platforms, which has 3 PCIe ports.
+
+Enabling this option allows the kernel to assign the pci-domains
+according to the device-tree content. This allows multiple PCIe
+controllers to coexist in the system.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/mach-qcom/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-qcom/Kconfig
++++ b/arch/arm/mach-qcom/Kconfig
+@@ -6,6 +6,7 @@ menuconfig ARCH_QCOM
+ select CLKSRC_OF
+ select PINCTRL
+ select QCOM_SCM if SMP
++ select PCI_DOMAINS if PCI
+ help
+ Support for Qualcomm's devicetree based systems.
+
--- /dev/null
+--- a/drivers/pci/host/pcie-qcom.c
++++ b/drivers/pci/host/pcie-qcom.c
+@@ -29,8 +29,53 @@
+
+ #include "pcie-designware.h"
+
++/* DBI registers */
++#define PCIE20_CAP 0x70
++#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
++
++#define PCIE20_AXI_MSTR_RESP_COMP_CTRL0 0x818
++#define PCIE20_AXI_MSTR_RESP_COMP_CTRL1 0x81c
++
++#define PCIE20_PLR_IATU_VIEWPORT 0x900
++#define PCIE20_PLR_IATU_REGION_OUTBOUND (0x0 << 31)
++#define PCIE20_PLR_IATU_REGION_INDEX(x) (x << 0)
++
++#define PCIE20_PLR_IATU_CTRL1 0x904
++#define PCIE20_PLR_IATU_TYPE_CFG0 (0x4 << 0)
++#define PCIE20_PLR_IATU_TYPE_MEM (0x0 << 0)
++
++#define PCIE20_PLR_IATU_CTRL2 0x908
++#define PCIE20_PLR_IATU_ENABLE BIT(31)
++
++#define PCIE20_PLR_IATU_LBAR 0x90C
++#define PCIE20_PLR_IATU_UBAR 0x910
++#define PCIE20_PLR_IATU_LAR 0x914
++#define PCIE20_PLR_IATU_LTAR 0x918
++#define PCIE20_PLR_IATU_UTAR 0x91c
++
++#define MSM_PCIE_DEV_CFG_ADDR 0x01000000
++
++/* PARF registers */
++#define PCIE20_PARF_PCS_DEEMPH 0x34
++#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) (x << 16)
++#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) (x << 8)
++#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) (x << 0)
++
++#define PCIE20_PARF_PCS_SWING 0x38
++#define PCS_SWING_TX_SWING_FULL(x) (x << 8)
++#define PCS_SWING_TX_SWING_LOW(x) (x << 0)
++
+ #define PCIE20_PARF_PHY_CTRL 0x40
++#define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK (0x1f << 16)
++#define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) (x << 16)
++
+ #define PCIE20_PARF_PHY_REFCLK 0x4C
++#define REF_SSP_EN BIT(16)
++#define REF_USE_PAD BIT(12)
++
++#define PCIE20_PARF_CONFIG_BITS 0x50
++#define PHY_RX0_EQ(x) (x << 24)
++
+ #define PCIE20_PARF_DBI_BASE_ADDR 0x168
+ #define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
+ #define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
+@@ -39,9 +84,6 @@
+ #define PCIE20_ELBI_SYS_STTS 0x08
+ #define XMLH_LINK_UP BIT(10)
+
+-#define PCIE20_CAP 0x70
+-#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
+-
+ #define PERST_DELAY_MIN_US 1000
+ #define PERST_DELAY_MAX_US 1005
+
+@@ -56,14 +98,18 @@ struct qcom_pcie_resources_v0 {
+ struct clk *iface_clk;
+ struct clk *core_clk;
+ struct clk *phy_clk;
++ struct clk *aux_clk;
++ struct clk *ref_clk;
+ struct reset_control *pci_reset;
+ struct reset_control *axi_reset;
+ struct reset_control *ahb_reset;
+ struct reset_control *por_reset;
+ struct reset_control *phy_reset;
++ struct reset_control *ext_reset;
+ struct regulator *vdda;
+ struct regulator *vdda_phy;
+ struct regulator *vdda_refclk;
++ uint8_t phy_tx0_term_offset;
+ };
+
+ struct qcom_pcie_resources_v1 {
+@@ -106,20 +152,10 @@ writel_masked(void __iomem *addr, u32 cl
+
+ static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
+ {
+- int val, active_low;
+-
+ if (IS_ERR_OR_NULL(pcie->reset))
+ return;
+
+- active_low = gpiod_is_active_low(pcie->reset);
+-
+- if (assert)
+- val = !!active_low;
+- else
+- val = !active_low;
+-
+- gpiod_set_value(pcie->reset, val);
+-
++ gpiod_set_value(pcie->reset, assert);
+ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
+ }
+
+@@ -156,10 +192,13 @@ static void qcom_pcie_disable_resources_
+ reset_control_assert(res->axi_reset);
+ reset_control_assert(res->ahb_reset);
+ reset_control_assert(res->por_reset);
+- reset_control_assert(res->pci_reset);
++ reset_control_assert(res->phy_reset);
++ reset_control_assert(res->ext_reset);
+ clk_disable_unprepare(res->iface_clk);
+ clk_disable_unprepare(res->core_clk);
+ clk_disable_unprepare(res->phy_clk);
++ clk_disable_unprepare(res->aux_clk);
++ clk_disable_unprepare(res->ref_clk);
+ regulator_disable(res->vdda);
+ regulator_disable(res->vdda_phy);
+ regulator_disable(res->vdda_refclk);
+@@ -201,6 +240,12 @@ static int qcom_pcie_enable_resources_v0
+ goto err_vdda_phy;
+ }
+
++ ret = reset_control_deassert(res->ext_reset);
++ if (ret) {
++ dev_err(dev, "cannot assert ext reset\n");
++ goto err_reset_ext;
++ }
++
+ ret = clk_prepare_enable(res->iface_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable iface clock\n");
+@@ -219,21 +264,40 @@ static int qcom_pcie_enable_resources_v0
+ goto err_clk_phy;
+ }
+
++ ret = clk_prepare_enable(res->aux_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable aux clock\n");
++ goto err_clk_aux;
++ }
++
++ ret = clk_prepare_enable(res->ref_clk);
++ if (ret) {
++ dev_err(dev, "cannot prepare/enable ref clock\n");
++ goto err_clk_ref;
++ }
++
+ ret = reset_control_deassert(res->ahb_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert ahb reset\n");
+ goto err_reset_ahb;
+ }
++ udelay(1);
+
+ return 0;
+
+ err_reset_ahb:
++ clk_disable_unprepare(res->ref_clk);
++err_clk_ref:
++ clk_disable_unprepare(res->aux_clk);
++err_clk_aux:
+ clk_disable_unprepare(res->phy_clk);
+ err_clk_phy:
+ clk_disable_unprepare(res->core_clk);
+ err_clk_core:
+ clk_disable_unprepare(res->iface_clk);
+ err_iface:
++ reset_control_assert(res->ext_reset);
++err_reset_ext:
+ regulator_disable(res->vdda_phy);
+ err_vdda_phy:
+ regulator_disable(res->vdda_refclk);
+@@ -329,6 +393,14 @@ static int qcom_pcie_get_resources_v0(st
+ if (IS_ERR(res->phy_clk))
+ return PTR_ERR(res->phy_clk);
+
++ res->aux_clk = devm_clk_get(dev, "aux");
++ if (IS_ERR(res->aux_clk))
++ return PTR_ERR(res->aux_clk);
++
++ res->ref_clk = devm_clk_get(dev, "ref");
++ if (IS_ERR(res->ref_clk))
++ return PTR_ERR(res->ref_clk);
++
+ res->pci_reset = devm_reset_control_get(dev, "pci");
+ if (IS_ERR(res->pci_reset))
+ return PTR_ERR(res->pci_reset);
+@@ -349,6 +421,14 @@ static int qcom_pcie_get_resources_v0(st
+ if (IS_ERR(res->phy_reset))
+ return PTR_ERR(res->phy_reset);
+
++ res->ext_reset = devm_reset_control_get(dev, "ext");
++ if (IS_ERR(res->ext_reset))
++ return PTR_ERR(res->ext_reset);
++
++ if (of_property_read_u8(dev->of_node, "phy-tx0-term-offset",
++ &res->phy_tx0_term_offset))
++ res->phy_tx0_term_offset = 0;
++
+ return 0;
+ }
+
+@@ -461,6 +541,57 @@ err_res:
+ qcom_pcie_disable_resources_v1(pcie);
+ }
+
++static void qcom_pcie_prog_viewport_cfg0(struct qcom_pcie *pcie, u32 busdev)
++{
++ struct pcie_port *pp = &pcie->pp;
++
++ /*
++ * program and enable address translation region 0 (device config
++ * address space); region type config;
++ * axi config address range to device config address range
++ */
++ writel(PCIE20_PLR_IATU_REGION_OUTBOUND |
++ PCIE20_PLR_IATU_REGION_INDEX(0),
++ pcie->dbi + PCIE20_PLR_IATU_VIEWPORT);
++
++ writel(PCIE20_PLR_IATU_TYPE_CFG0, pcie->dbi + PCIE20_PLR_IATU_CTRL1);
++ writel(PCIE20_PLR_IATU_ENABLE, pcie->dbi + PCIE20_PLR_IATU_CTRL2);
++ writel(pp->cfg0_mod_base, pcie->dbi + PCIE20_PLR_IATU_LBAR);
++ writel((pp->cfg0_mod_base >> 32), pcie->dbi + PCIE20_PLR_IATU_UBAR);
++ writel((pp->cfg0_mod_base + pp->cfg0_size - 1),
++ pcie->dbi + PCIE20_PLR_IATU_LAR);
++ writel(busdev, pcie->dbi + PCIE20_PLR_IATU_LTAR);
++ writel(0, pcie->dbi + PCIE20_PLR_IATU_UTAR);
++}
++
++static void qcom_pcie_prog_viewport_mem2_outbound(struct qcom_pcie *pcie)
++{
++ struct pcie_port *pp = &pcie->pp;
++
++ /*
++ * program and enable address translation region 2 (device resource
++ * address space); region type memory;
++ * axi device bar address range to device bar address range
++ */
++ writel(PCIE20_PLR_IATU_REGION_OUTBOUND |
++ PCIE20_PLR_IATU_REGION_INDEX(2),
++ pcie->dbi + PCIE20_PLR_IATU_VIEWPORT);
++
++ writel(PCIE20_PLR_IATU_TYPE_MEM, pcie->dbi + PCIE20_PLR_IATU_CTRL1);
++ writel(PCIE20_PLR_IATU_ENABLE, pcie->dbi + PCIE20_PLR_IATU_CTRL2);
++ writel(pp->mem_mod_base, pcie->dbi + PCIE20_PLR_IATU_LBAR);
++ writel((pp->mem_mod_base >> 32), pcie->dbi + PCIE20_PLR_IATU_UBAR);
++ writel(pp->mem_mod_base + pp->mem_size - 1,
++ pcie->dbi + PCIE20_PLR_IATU_LAR);
++ writel(pp->mem_bus_addr, pcie->dbi + PCIE20_PLR_IATU_LTAR);
++ writel(upper_32_bits(pp->mem_bus_addr),
++ pcie->dbi + PCIE20_PLR_IATU_UTAR);
++
++ /* 256B PCIE buffer setting */
++ writel(0x1, pcie->dbi + PCIE20_AXI_MSTR_RESP_COMP_CTRL0);
++ writel(0x1, pcie->dbi + PCIE20_AXI_MSTR_RESP_COMP_CTRL1);
++}
++
+ static void qcom_pcie_host_init_v0(struct pcie_port *pp)
+ {
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+@@ -470,15 +601,34 @@ static void qcom_pcie_host_init_v0(struc
+
+ qcom_ep_reset_assert(pcie);
+
++ reset_control_assert(res->ahb_reset);
++
+ ret = qcom_pcie_enable_resources_v0(pcie);
+ if (ret)
+ return;
+
+ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
+
+- /* enable external reference clock */
+- writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
++ /* Set Tx termination offset */
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL,
++ PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK,
++ PHY_CTRL_PHY_TX0_TERM_OFFSET(res->phy_tx0_term_offset));
++
++ /* PARF programming */
++ writel(PCS_DEEMPH_TX_DEEMPH_GEN1(0x18) |
++ PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(0x18) |
++ PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(0x22),
++ pcie->parf + PCIE20_PARF_PCS_DEEMPH);
++ writel(PCS_SWING_TX_SWING_FULL(0x78) |
++ PCS_SWING_TX_SWING_LOW(0x78),
++ pcie->parf + PCIE20_PARF_PCS_SWING);
++ writel(PHY_RX0_EQ(0x4), pcie->parf + PCIE20_PARF_CONFIG_BITS);
++
++ /* Enable reference clock */
++ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK,
++ REF_USE_PAD, REF_SSP_EN);
+
++ /* De-assert PHY, PCIe, POR and AXI resets */
+ ret = reset_control_deassert(res->phy_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert phy reset\n");
+@@ -517,6 +667,9 @@ static void qcom_pcie_host_init_v0(struc
+ if (ret)
+ goto err;
+
++ qcom_pcie_prog_viewport_cfg0(pcie, MSM_PCIE_DEV_CFG_ADDR);
++ qcom_pcie_prog_viewport_mem2_outbound(pcie);
++
+ return;
+ err:
+ qcom_ep_reset_assert(pcie);
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -369,15 +369,21 @@
+
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+- <&gcc PCIE_PHY_CLK>;
+- clock-names = "core", "iface", "phy";
++ <&gcc PCIE_PHY_CLK>,
++ <&gcc PCIE_AUX_CLK>,
++ <&gcc PCIE_ALT_REF_CLK>;
++ clock-names = "core", "iface", "phy", "aux", "ref";
++
++ assigned-clocks = <&gcc PCIE_ALT_REF_CLK>;
++ assigned-clock-rates = <100000000>;
+
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+- <&gcc PCIE_PHY_RESET>;
+- reset-names = "axi", "ahb", "por", "pci", "phy";
++ <&gcc PCIE_PHY_RESET>,
++ <&gcc PCIE_EXT_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
+
+ pinctrl-0 = <&pcie0_pins>;
+ pinctrl-names = "default";
+@@ -415,15 +421,21 @@
+
+ clocks = <&gcc PCIE_1_A_CLK>,
+ <&gcc PCIE_1_H_CLK>,
+- <&gcc PCIE_1_PHY_CLK>;
+- clock-names = "core", "iface", "phy";
++ <&gcc PCIE_1_PHY_CLK>,
++ <&gcc PCIE_1_AUX_CLK>,
++ <&gcc PCIE_1_ALT_REF_CLK>;
++ clock-names = "core", "iface", "phy", "aux", "ref";
++
++ assigned-clocks = <&gcc PCIE_1_ALT_REF_CLK>;
++ assigned-clock-rates = <100000000>;
+
+ resets = <&gcc PCIE_1_ACLK_RESET>,
+ <&gcc PCIE_1_HCLK_RESET>,
+ <&gcc PCIE_1_POR_RESET>,
+ <&gcc PCIE_1_PCI_RESET>,
+- <&gcc PCIE_1_PHY_RESET>;
+- reset-names = "axi", "ahb", "por", "pci", "phy";
++ <&gcc PCIE_1_PHY_RESET>,
++ <&gcc PCIE_1_EXT_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
+
+ pinctrl-0 = <&pcie1_pins>;
+ pinctrl-names = "default";
+@@ -461,15 +473,21 @@
+
+ clocks = <&gcc PCIE_2_A_CLK>,
+ <&gcc PCIE_2_H_CLK>,
+- <&gcc PCIE_2_PHY_CLK>;
+- clock-names = "core", "iface", "phy";
++ <&gcc PCIE_2_PHY_CLK>,
++ <&gcc PCIE_2_AUX_CLK>,
++ <&gcc PCIE_2_ALT_REF_CLK>;
++ clock-names = "core", "iface", "phy", "aux", "ref";
++
++ assigned-clocks = <&gcc PCIE_2_ALT_REF_CLK>;
++ assigned-clock-rates = <100000000>;
+
+ resets = <&gcc PCIE_2_ACLK_RESET>,
+ <&gcc PCIE_2_HCLK_RESET>,
+ <&gcc PCIE_2_POR_RESET>,
+ <&gcc PCIE_2_PCI_RESET>,
+- <&gcc PCIE_2_PHY_RESET>;
+- reset-names = "axi", "ahb", "por", "pci", "phy";
++ <&gcc PCIE_2_PHY_RESET>,
++ <&gcc PCIE_2_EXT_RESET>;
++ reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
+
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
--- /dev/null
+From 58e214382bdd1eb48c5a3519182bddcb26edabad Mon Sep 17 00:00:00 2001
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Date: Wed, 26 Nov 2014 13:51:00 -0800
+Subject: [PATCH] mfd: qcom-rpm: Driver for the Qualcomm RPM
+
+Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
+and 8064 based devices. The driver exposes resources that child drivers
+can operate on; to implementing regulator, clock and bus frequency
+drivers.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/Kconfig | 14 ++
+ drivers/mfd/Makefile | 1 +
+ drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mfd/qcom_rpm.h | 13 +
+ 4 files changed, 609 insertions(+)
+ create mode 100644 drivers/mfd/qcom_rpm.c
+ create mode 100644 include/linux/mfd/qcom_rpm.h
+
+--- a/drivers/mfd/Kconfig
++++ b/drivers/mfd/Kconfig
+@@ -567,6 +567,20 @@ config MFD_PM8921_CORE
+ Say M here if you want to include support for PM8921 chip as a module.
+ This will build a module called "pm8921-core".
+
++config MFD_QCOM_RPM
++ tristate "Qualcomm Resource Power Manager (RPM)"
++ depends on ARCH_QCOM && OF
++ help
++ If you say yes to this option, support will be included for the
++ Resource Power Manager system found in the Qualcomm 8660, 8960 and
++ 8064 based devices.
++
++ This is required to access many regulators, clocks and bus
++ frequencies controlled by the RPM on these devices.
++
++ Say M here if you want to include support for the Qualcomm RPM as a
++ module. This will build a module called "qcom_rpm".
++
+ config MFD_SPMI_PMIC
+ tristate "Qualcomm SPMI PMICs"
+ depends on ARCH_QCOM || COMPILE_TEST
+--- a/drivers/mfd/Makefile
++++ b/drivers/mfd/Makefile
+@@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-
+ obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
+ obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
+ obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
++obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o
+ obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
+ obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
+ obj-$(CONFIG_MFD_TPS65090) += tps65090.o
+--- /dev/null
++++ b/drivers/mfd/qcom_rpm.c
+@@ -0,0 +1,581 @@
++/*
++ * Copyright (c) 2014, Sony Mobile Communications AB.
++ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
++ * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/of_platform.h>
++#include <linux/io.h>
++#include <linux/interrupt.h>
++#include <linux/mfd/qcom_rpm.h>
++#include <linux/mfd/syscon.h>
++#include <linux/regmap.h>
++
++#include <dt-bindings/mfd/qcom-rpm.h>
++
++struct qcom_rpm_resource {
++ unsigned target_id;
++ unsigned status_id;
++ unsigned select_id;
++ unsigned size;
++};
++
++struct qcom_rpm_data {
++ u32 version;
++ const struct qcom_rpm_resource *resource_table;
++ unsigned n_resources;
++};
++
++struct qcom_rpm {
++ struct device *dev;
++ struct regmap *ipc_regmap;
++ unsigned ipc_offset;
++ unsigned ipc_bit;
++
++ struct completion ack;
++ struct mutex lock;
++
++ void __iomem *status_regs;
++ void __iomem *ctrl_regs;
++ void __iomem *req_regs;
++
++ u32 ack_status;
++
++ const struct qcom_rpm_data *data;
++};
++
++#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
++#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
++#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
++
++#define RPM_REQUEST_TIMEOUT (5 * HZ)
++
++#define RPM_REQUEST_CONTEXT 3
++#define RPM_REQ_SELECT 11
++#define RPM_ACK_CONTEXT 15
++#define RPM_ACK_SELECTOR 23
++#define RPM_SELECT_SIZE 7
++
++#define RPM_NOTIFICATION BIT(30)
++#define RPM_REJECTED BIT(31)
++
++#define RPM_SIGNAL BIT(2)
++
++static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
++ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
++ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
++ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
++ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
++ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
++ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
++ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
++ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
++ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
++ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
++ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
++ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
++ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
++ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
++ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
++ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
++ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
++ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
++ [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
++ [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
++ [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
++ [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
++ [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
++ [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
++ [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
++ [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
++ [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
++ [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
++ [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
++ [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
++ [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
++ [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
++ [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
++ [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
++ [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
++ [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
++ [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
++ [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
++ [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
++ [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
++ [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
++ [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
++ [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
++ [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
++ [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
++ [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
++ [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
++ [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
++ [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
++ [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
++ [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
++ [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
++ [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
++ [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
++ [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
++ [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
++ [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
++ [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
++ [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
++ [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
++ [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
++ [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
++ [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
++ [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
++ [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
++ [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
++ [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
++ [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
++ [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
++ [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
++ [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
++ [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
++ [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
++ [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
++ [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
++ [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
++ [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
++};
++
++static const struct qcom_rpm_data apq8064_template = {
++ .version = 3,
++ .resource_table = apq8064_rpm_resource_table,
++ .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
++};
++
++static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
++ [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
++ [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
++ [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
++ [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
++ [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
++ [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
++ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
++ [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
++ [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
++ [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
++ [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
++ [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
++ [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
++ [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
++ [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
++ [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
++ [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
++ [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
++ [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
++ [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
++ [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
++ [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
++ [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
++ [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
++ [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
++ [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
++ [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
++ [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
++ [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
++ [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
++ [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
++ [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
++ [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
++ [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
++ [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
++ [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
++ [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
++ [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
++ [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
++ [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
++ [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
++ [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
++ [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
++ [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
++ [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
++ [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
++ [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
++ [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
++ [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
++ [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
++ [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
++ [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
++ [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
++ [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
++ [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
++ [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
++ [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
++ [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
++ [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
++ [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
++ [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
++ [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
++ [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
++ [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
++ [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
++ [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
++ [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
++ [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
++ [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
++ [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
++ [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
++ [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
++ [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
++ [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
++};
++
++static const struct qcom_rpm_data msm8660_template = {
++ .version = 2,
++ .resource_table = msm8660_rpm_resource_table,
++ .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
++};
++
++static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
++ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
++ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
++ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
++ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
++ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
++ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
++ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
++ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
++ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
++ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
++ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
++ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
++ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
++ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
++ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
++ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
++ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
++ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
++ [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
++ [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
++ [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
++ [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
++ [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
++ [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
++ [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
++ [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
++ [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
++ [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
++ [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
++ [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
++ [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
++ [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
++ [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
++ [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
++ [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
++ [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
++ [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
++ [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
++ [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
++ [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
++ [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
++ [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
++ [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
++ [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
++ [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
++ [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
++ [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
++ [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
++ [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
++ [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
++ [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
++ [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
++ [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
++ [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
++ [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
++ [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
++ [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
++ [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
++ [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
++ [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
++ [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
++ [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
++ [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
++ [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
++ [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
++ [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
++ [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
++ [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
++ [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
++ [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
++ [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
++ [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
++ [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
++};
++
++static const struct qcom_rpm_data msm8960_template = {
++ .version = 3,
++ .resource_table = msm8960_rpm_resource_table,
++ .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
++};
++
++static const struct of_device_id qcom_rpm_of_match[] = {
++ { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
++ { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
++ { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
++ { }
++};
++MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
++
++int qcom_rpm_write(struct qcom_rpm *rpm,
++ int state,
++ int resource,
++ u32 *buf, size_t count)
++{
++ const struct qcom_rpm_resource *res;
++ const struct qcom_rpm_data *data = rpm->data;
++ u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
++ int left;
++ int ret = 0;
++ int i;
++
++ if (WARN_ON(resource < 0 || resource >= data->n_resources))
++ return -EINVAL;
++
++ res = &data->resource_table[resource];
++ if (WARN_ON(res->size != count))
++ return -EINVAL;
++
++ mutex_lock(&rpm->lock);
++
++ for (i = 0; i < res->size; i++)
++ writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
++
++ bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
++ for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
++ writel_relaxed(sel_mask[i],
++ RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
++ }
++
++ writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
++
++ reinit_completion(&rpm->ack);
++ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
++
++ left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
++ if (!left)
++ ret = -ETIMEDOUT;
++ else if (rpm->ack_status & RPM_REJECTED)
++ ret = -EIO;
++
++ mutex_unlock(&rpm->lock);
++
++ return ret;
++}
++EXPORT_SYMBOL(qcom_rpm_write);
++
++static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
++{
++ struct qcom_rpm *rpm = dev;
++ u32 ack;
++ int i;
++
++ ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
++ for (i = 0; i < RPM_SELECT_SIZE; i++)
++ writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
++ writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
++
++ if (ack & RPM_NOTIFICATION) {
++ dev_warn(rpm->dev, "ignoring notification!\n");
++ } else {
++ rpm->ack_status = ack;
++ complete(&rpm->ack);
++ }
++
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
++{
++ struct qcom_rpm *rpm = dev;
++
++ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
++ dev_err(rpm->dev, "RPM triggered fatal error\n");
++
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
++{
++ return IRQ_HANDLED;
++}
++
++static int qcom_rpm_probe(struct platform_device *pdev)
++{
++ const struct of_device_id *match;
++ struct device_node *syscon_np;
++ struct resource *res;
++ struct qcom_rpm *rpm;
++ u32 fw_version[3];
++ int irq_wakeup;
++ int irq_ack;
++ int irq_err;
++ int ret;
++
++ rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
++ if (!rpm)
++ return -ENOMEM;
++
++ rpm->dev = &pdev->dev;
++ mutex_init(&rpm->lock);
++ init_completion(&rpm->ack);
++
++ irq_ack = platform_get_irq_byname(pdev, "ack");
++ if (irq_ack < 0) {
++ dev_err(&pdev->dev, "required ack interrupt missing\n");
++ return irq_ack;
++ }
++
++ irq_err = platform_get_irq_byname(pdev, "err");
++ if (irq_err < 0) {
++ dev_err(&pdev->dev, "required err interrupt missing\n");
++ return irq_err;
++ }
++
++ irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
++ if (irq_wakeup < 0) {
++ dev_err(&pdev->dev, "required wakeup interrupt missing\n");
++ return irq_wakeup;
++ }
++
++ match = of_match_device(qcom_rpm_of_match, &pdev->dev);
++ rpm->data = match->data;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(rpm->status_regs))
++ return PTR_ERR(rpm->status_regs);
++ rpm->ctrl_regs = rpm->status_regs + 0x400;
++ rpm->req_regs = rpm->status_regs + 0x600;
++
++ syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
++ if (!syscon_np) {
++ dev_err(&pdev->dev, "no qcom,ipc node\n");
++ return -ENODEV;
++ }
++
++ rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
++ if (IS_ERR(rpm->ipc_regmap))
++ return PTR_ERR(rpm->ipc_regmap);
++
++ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
++ &rpm->ipc_offset);
++ if (ret < 0) {
++ dev_err(&pdev->dev, "no offset in qcom,ipc\n");
++ return -EINVAL;
++ }
++
++ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
++ &rpm->ipc_bit);
++ if (ret < 0) {
++ dev_err(&pdev->dev, "no bit in qcom,ipc\n");
++ return -EINVAL;
++ }
++
++ dev_set_drvdata(&pdev->dev, rpm);
++
++ fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
++ fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
++ fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
++ if (fw_version[0] != rpm->data->version) {
++ dev_err(&pdev->dev,
++ "RPM version %u.%u.%u incompatible with driver version %u",
++ fw_version[0],
++ fw_version[1],
++ fw_version[2],
++ rpm->data->version);
++ return -EFAULT;
++ }
++
++ dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
++ fw_version[1],
++ fw_version[2]);
++
++ ret = devm_request_irq(&pdev->dev,
++ irq_ack,
++ qcom_rpm_ack_interrupt,
++ IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
++ "qcom_rpm_ack",
++ rpm);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to request ack interrupt\n");
++ return ret;
++ }
++
++ ret = irq_set_irq_wake(irq_ack, 1);
++ if (ret)
++ dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
++
++ ret = devm_request_irq(&pdev->dev,
++ irq_err,
++ qcom_rpm_err_interrupt,
++ IRQF_TRIGGER_RISING,
++ "qcom_rpm_err",
++ rpm);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to request err interrupt\n");
++ return ret;
++ }
++
++ ret = devm_request_irq(&pdev->dev,
++ irq_wakeup,
++ qcom_rpm_wakeup_interrupt,
++ IRQF_TRIGGER_RISING,
++ "qcom_rpm_wakeup",
++ rpm);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
++ return ret;
++ }
++
++ ret = irq_set_irq_wake(irq_wakeup, 1);
++ if (ret)
++ dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
++
++ return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
++}
++
++static int qcom_rpm_remove(struct platform_device *pdev)
++{
++ of_platform_depopulate(&pdev->dev);
++ return 0;
++}
++
++static struct platform_driver qcom_rpm_driver = {
++ .probe = qcom_rpm_probe,
++ .remove = qcom_rpm_remove,
++ .driver = {
++ .name = "qcom_rpm",
++ .of_match_table = qcom_rpm_of_match,
++ },
++};
++
++static int __init qcom_rpm_init(void)
++{
++ return platform_driver_register(&qcom_rpm_driver);
++}
++arch_initcall(qcom_rpm_init);
++
++static void __exit qcom_rpm_exit(void)
++{
++ platform_driver_unregister(&qcom_rpm_driver);
++}
++module_exit(qcom_rpm_exit)
++
++MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
+--- /dev/null
++++ b/include/linux/mfd/qcom_rpm.h
+@@ -0,0 +1,13 @@
++#ifndef __QCOM_RPM_H__
++#define __QCOM_RPM_H__
++
++#include <linux/types.h>
++
++struct qcom_rpm;
++
++#define QCOM_RPM_ACTIVE_STATE 0
++#define QCOM_RPM_SLEEP_STATE 1
++
++int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count);
++
++#endif
--- /dev/null
+From 4d54b0adfa67476e6509bc8646b9dbac642e8a29 Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc@codeaurora.org>
+Date: Thu, 26 Mar 2015 11:29:26 -0700
+Subject: [PATCH] mfd: qcom_rpm: Add support for IPQ8064
+
+The IPQ8064 also includes an RPM following the same message structure as
+other chips. In addition, it supports a few new resource types to
+support the NSS fabric clocks and the SMB208/SMB209 regulators found on
+the reference boards.
+
+Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/qcom_rpm.c | 41 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 41 insertions(+)
+
+--- a/drivers/mfd/qcom_rpm.c
++++ b/drivers/mfd/qcom_rpm.c
+@@ -323,10 +323,51 @@ static const struct qcom_rpm_data msm896
+ .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
+ };
+
++static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = {
++ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
++ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
++ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
++ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
++ [QCOM_RPM_NSS_FABRIC_0_CLK] = { 29, 13, 10, 1 },
++ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
++ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
++ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
++ [QCOM_RPM_NSS_FABRIC_1_CLK] = { 33, 17, 14, 1 },
++ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
++ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 2 },
++ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 3 },
++ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
++ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
++ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 2 },
++ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 3 },
++ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
++ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
++ [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 2 },
++ [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 3 },
++ [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
++ [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 2 },
++ [QCOM_RPM_CXO_BUFFERS] = { 209, 33, 31, 1 },
++ [QCOM_RPM_USB_OTG_SWITCH] = { 210, 34, 32, 1 },
++ [QCOM_RPM_HDMI_SWITCH] = { 211, 35, 33, 1 },
++ [QCOM_RPM_DDR_DMM] = { 212, 36, 34, 2 },
++ [QCOM_RPM_VDDMIN_GPIO] = { 215, 40, 39, 1 },
++ [QCOM_RPM_SMB208_S1a] = { 216, 41, 90, 2 },
++ [QCOM_RPM_SMB208_S1b] = { 218, 43, 91, 2 },
++ [QCOM_RPM_SMB208_S2a] = { 220, 45, 92, 2 },
++ [QCOM_RPM_SMB208_S2b] = { 222, 47, 93, 2 },
++};
++
++static const struct qcom_rpm_data ipq806x_template = {
++ .version = 3,
++ .resource_table = ipq806x_rpm_resource_table,
++ .n_resources = ARRAY_SIZE(ipq806x_rpm_resource_table),
++};
++
+ static const struct of_device_id qcom_rpm_of_match[] = {
+ { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
+ { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
+ { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
++ { .compatible = "qcom,rpm-ipq8064", .data = &ipq806x_template },
+ { }
+ };
+ MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
--- /dev/null
+From aa0c4b815045420ea54d5ae5362f5a0190609d46 Mon Sep 17 00:00:00 2001
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Date: Wed, 26 Nov 2014 13:50:59 -0800
+Subject: [PATCH] mfd: devicetree: bindings: Add Qualcomm RPM DT binding
+
+Add binding for the Qualcomm Resource Power Manager (RPM) found in 8660,
+8960 and 8064 based devices.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ Documentation/devicetree/bindings/mfd/qcom-rpm.txt | 70 ++++++++++
+ include/dt-bindings/mfd/qcom-rpm.h | 154 +++++++++++++++++++++
+ 2 files changed, 224 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mfd/qcom-rpm.txt
+ create mode 100644 include/dt-bindings/mfd/qcom-rpm.h
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mfd/qcom-rpm.txt
+@@ -0,0 +1,70 @@
++Qualcomm Resource Power Manager (RPM)
++
++This driver is used to interface with the Resource Power Manager (RPM) found in
++various Qualcomm platforms. The RPM allows each component in the system to vote
++for state of the system resources, such as clocks, regulators and bus
++frequencies.
++
++- compatible:
++ Usage: required
++ Value type: <string>
++ Definition: must be one of:
++ "qcom,rpm-apq8064"
++ "qcom,rpm-msm8660"
++ "qcom,rpm-msm8960"
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: base address and size of the RPM's message ram
++
++- interrupts:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: three entries specifying the RPM's:
++ 1. acknowledgement interrupt
++ 2. error interrupt
++ 3. wakeup interrupt
++
++- interrupt-names:
++ Usage: required
++ Value type: <string-array>
++ Definition: must be the three strings "ack", "err" and "wakeup", in order
++
++- #address-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: must be 1
++
++- #size-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: must be 0
++
++- qcom,ipc:
++ Usage: required
++ Value type: <prop-encoded-array>
++
++ Definition: three entries specifying the outgoing ipc bit used for
++ signaling the RPM:
++ - phandle to a syscon node representing the apcs registers
++ - u32 representing offset to the register within the syscon
++ - u32 representing the ipc bit within the register
++
++
++= EXAMPLE
++
++ #include <dt-bindings/mfd/qcom-rpm.h>
++
++ rpm@108000 {
++ compatible = "qcom,rpm-msm8960";
++ reg = <0x108000 0x1000>;
++ qcom,ipc = <&apcs 0x8 2>;
++
++ interrupts = <0 19 0>, <0 21 0>, <0 22 0>;
++ interrupt-names = "ack", "err", "wakeup";
++
++ #address-cells = <1>;
++ #size-cells = <0>;
++ };
++
+--- /dev/null
++++ b/include/dt-bindings/mfd/qcom-rpm.h
+@@ -0,0 +1,154 @@
++/*
++ * This header provides constants for the Qualcomm RPM bindings.
++ */
++
++#ifndef _DT_BINDINGS_MFD_QCOM_RPM_H
++#define _DT_BINDINGS_MFD_QCOM_RPM_H
++
++/*
++ * Constants use to identify individual resources in the RPM.
++ */
++#define QCOM_RPM_APPS_FABRIC_ARB 1
++#define QCOM_RPM_APPS_FABRIC_CLK 2
++#define QCOM_RPM_APPS_FABRIC_HALT 3
++#define QCOM_RPM_APPS_FABRIC_IOCTL 4
++#define QCOM_RPM_APPS_FABRIC_MODE 5
++#define QCOM_RPM_APPS_L2_CACHE_CTL 6
++#define QCOM_RPM_CFPB_CLK 7
++#define QCOM_RPM_CXO_BUFFERS 8
++#define QCOM_RPM_CXO_CLK 9
++#define QCOM_RPM_DAYTONA_FABRIC_CLK 10
++#define QCOM_RPM_DDR_DMM 11
++#define QCOM_RPM_EBI1_CLK 12
++#define QCOM_RPM_HDMI_SWITCH 13
++#define QCOM_RPM_MMFPB_CLK 14
++#define QCOM_RPM_MM_FABRIC_ARB 15
++#define QCOM_RPM_MM_FABRIC_CLK 16
++#define QCOM_RPM_MM_FABRIC_HALT 17
++#define QCOM_RPM_MM_FABRIC_IOCTL 18
++#define QCOM_RPM_MM_FABRIC_MODE 19
++#define QCOM_RPM_PLL_4 20
++#define QCOM_RPM_PM8058_LDO0 21
++#define QCOM_RPM_PM8058_LDO1 22
++#define QCOM_RPM_PM8058_LDO2 23
++#define QCOM_RPM_PM8058_LDO3 24
++#define QCOM_RPM_PM8058_LDO4 25
++#define QCOM_RPM_PM8058_LDO5 26
++#define QCOM_RPM_PM8058_LDO6 27
++#define QCOM_RPM_PM8058_LDO7 28
++#define QCOM_RPM_PM8058_LDO8 29
++#define QCOM_RPM_PM8058_LDO9 30
++#define QCOM_RPM_PM8058_LDO10 31
++#define QCOM_RPM_PM8058_LDO11 32
++#define QCOM_RPM_PM8058_LDO12 33
++#define QCOM_RPM_PM8058_LDO13 34
++#define QCOM_RPM_PM8058_LDO14 35
++#define QCOM_RPM_PM8058_LDO15 36
++#define QCOM_RPM_PM8058_LDO16 37
++#define QCOM_RPM_PM8058_LDO17 38
++#define QCOM_RPM_PM8058_LDO18 39
++#define QCOM_RPM_PM8058_LDO19 40
++#define QCOM_RPM_PM8058_LDO20 41
++#define QCOM_RPM_PM8058_LDO21 42
++#define QCOM_RPM_PM8058_LDO22 43
++#define QCOM_RPM_PM8058_LDO23 44
++#define QCOM_RPM_PM8058_LDO24 45
++#define QCOM_RPM_PM8058_LDO25 46
++#define QCOM_RPM_PM8058_LVS0 47
++#define QCOM_RPM_PM8058_LVS1 48
++#define QCOM_RPM_PM8058_NCP 49
++#define QCOM_RPM_PM8058_SMPS0 50
++#define QCOM_RPM_PM8058_SMPS1 51
++#define QCOM_RPM_PM8058_SMPS2 52
++#define QCOM_RPM_PM8058_SMPS3 53
++#define QCOM_RPM_PM8058_SMPS4 54
++#define QCOM_RPM_PM8821_LDO1 55
++#define QCOM_RPM_PM8821_SMPS1 56
++#define QCOM_RPM_PM8821_SMPS2 57
++#define QCOM_RPM_PM8901_LDO0 58
++#define QCOM_RPM_PM8901_LDO1 59
++#define QCOM_RPM_PM8901_LDO2 60
++#define QCOM_RPM_PM8901_LDO3 61
++#define QCOM_RPM_PM8901_LDO4 62
++#define QCOM_RPM_PM8901_LDO5 63
++#define QCOM_RPM_PM8901_LDO6 64
++#define QCOM_RPM_PM8901_LVS0 65
++#define QCOM_RPM_PM8901_LVS1 66
++#define QCOM_RPM_PM8901_LVS2 67
++#define QCOM_RPM_PM8901_LVS3 68
++#define QCOM_RPM_PM8901_MVS 69
++#define QCOM_RPM_PM8901_SMPS0 70
++#define QCOM_RPM_PM8901_SMPS1 71
++#define QCOM_RPM_PM8901_SMPS2 72
++#define QCOM_RPM_PM8901_SMPS3 73
++#define QCOM_RPM_PM8901_SMPS4 74
++#define QCOM_RPM_PM8921_CLK1 75
++#define QCOM_RPM_PM8921_CLK2 76
++#define QCOM_RPM_PM8921_LDO1 77
++#define QCOM_RPM_PM8921_LDO2 78
++#define QCOM_RPM_PM8921_LDO3 79
++#define QCOM_RPM_PM8921_LDO4 80
++#define QCOM_RPM_PM8921_LDO5 81
++#define QCOM_RPM_PM8921_LDO6 82
++#define QCOM_RPM_PM8921_LDO7 83
++#define QCOM_RPM_PM8921_LDO8 84
++#define QCOM_RPM_PM8921_LDO9 85
++#define QCOM_RPM_PM8921_LDO10 86
++#define QCOM_RPM_PM8921_LDO11 87
++#define QCOM_RPM_PM8921_LDO12 88
++#define QCOM_RPM_PM8921_LDO13 89
++#define QCOM_RPM_PM8921_LDO14 90
++#define QCOM_RPM_PM8921_LDO15 91
++#define QCOM_RPM_PM8921_LDO16 92
++#define QCOM_RPM_PM8921_LDO17 93
++#define QCOM_RPM_PM8921_LDO18 94
++#define QCOM_RPM_PM8921_LDO19 95
++#define QCOM_RPM_PM8921_LDO20 96
++#define QCOM_RPM_PM8921_LDO21 97
++#define QCOM_RPM_PM8921_LDO22 98
++#define QCOM_RPM_PM8921_LDO23 99
++#define QCOM_RPM_PM8921_LDO24 100
++#define QCOM_RPM_PM8921_LDO25 101
++#define QCOM_RPM_PM8921_LDO26 102
++#define QCOM_RPM_PM8921_LDO27 103
++#define QCOM_RPM_PM8921_LDO28 104
++#define QCOM_RPM_PM8921_LDO29 105
++#define QCOM_RPM_PM8921_LVS1 106
++#define QCOM_RPM_PM8921_LVS2 107
++#define QCOM_RPM_PM8921_LVS3 108
++#define QCOM_RPM_PM8921_LVS4 109
++#define QCOM_RPM_PM8921_LVS5 110
++#define QCOM_RPM_PM8921_LVS6 111
++#define QCOM_RPM_PM8921_LVS7 112
++#define QCOM_RPM_PM8921_MVS 113
++#define QCOM_RPM_PM8921_NCP 114
++#define QCOM_RPM_PM8921_SMPS1 115
++#define QCOM_RPM_PM8921_SMPS2 116
++#define QCOM_RPM_PM8921_SMPS3 117
++#define QCOM_RPM_PM8921_SMPS4 118
++#define QCOM_RPM_PM8921_SMPS5 119
++#define QCOM_RPM_PM8921_SMPS6 120
++#define QCOM_RPM_PM8921_SMPS7 121
++#define QCOM_RPM_PM8921_SMPS8 122
++#define QCOM_RPM_PXO_CLK 123
++#define QCOM_RPM_QDSS_CLK 124
++#define QCOM_RPM_SFPB_CLK 125
++#define QCOM_RPM_SMI_CLK 126
++#define QCOM_RPM_SYS_FABRIC_ARB 127
++#define QCOM_RPM_SYS_FABRIC_CLK 128
++#define QCOM_RPM_SYS_FABRIC_HALT 129
++#define QCOM_RPM_SYS_FABRIC_IOCTL 130
++#define QCOM_RPM_SYS_FABRIC_MODE 131
++#define QCOM_RPM_USB_OTG_SWITCH 132
++#define QCOM_RPM_VDDMIN_GPIO 133
++
++/*
++ * Constants used to select force mode for regulators.
++ */
++#define QCOM_RPM_FORCE_MODE_NONE 0
++#define QCOM_RPM_FORCE_MODE_LPM 1
++#define QCOM_RPM_FORCE_MODE_HPM 2
++#define QCOM_RPM_FORCE_MODE_AUTO 3
++#define QCOM_RPM_FORCE_MODE_BYPASS 4
++
++#endif
--- /dev/null
+From 30bc3aa5c4ed3072bdff7d915772df1b91307ed4 Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc@codeaurora.org>
+Date: Thu, 26 Mar 2015 11:29:25 -0700
+Subject: [PATCH] mfd: devicetree: qcom_rpm: Document IPQ8064 resources
+
+The IPQ8064 SoC has several RPM-controlled resources, an NSS fabrick
+clock and four regulator resources. Provide definitions for them.
+
+Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
+[sboyd@codeaurora.org: Drop regulator part of binding]
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ Documentation/devicetree/bindings/mfd/qcom-rpm.txt | 1 +
+ include/dt-bindings/mfd/qcom-rpm.h | 6 ++++++
+ 2 files changed, 7 insertions(+)
+
+--- a/Documentation/devicetree/bindings/mfd/qcom-rpm.txt
++++ b/Documentation/devicetree/bindings/mfd/qcom-rpm.txt
+@@ -12,6 +12,7 @@ frequencies.
+ "qcom,rpm-apq8064"
+ "qcom,rpm-msm8660"
+ "qcom,rpm-msm8960"
++ "qcom,rpm-ipq8064"
+
+ - reg:
+ Usage: required
+--- a/include/dt-bindings/mfd/qcom-rpm.h
++++ b/include/dt-bindings/mfd/qcom-rpm.h
+@@ -141,6 +141,12 @@
+ #define QCOM_RPM_SYS_FABRIC_MODE 131
+ #define QCOM_RPM_USB_OTG_SWITCH 132
+ #define QCOM_RPM_VDDMIN_GPIO 133
++#define QCOM_RPM_NSS_FABRIC_0_CLK 134
++#define QCOM_RPM_NSS_FABRIC_1_CLK 135
++#define QCOM_RPM_SMB208_S1a 136
++#define QCOM_RPM_SMB208_S1b 137
++#define QCOM_RPM_SMB208_S2a 138
++#define QCOM_RPM_SMB208_S2b 139
+
+ /*
+ * Constants used to select force mode for regulators.
--- /dev/null
+From 0f5bb5b5de3b18877373f746bdb85d8ea0efeedf Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc@codeaurora.org>
+Date: Thu, 20 Nov 2014 13:41:25 -0600
+Subject: [PATCH] regulator: rpm: add support for RPM-controller SMB208
+
+The IPQ8064 reference boards make use of SMB208 regulators which are
+controlled by RPM. Implement support for these regulators in the RPM
+regulator driver.
+
+Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
+Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Signed-off-by: Mark Brown <broonie@kernel.org>
+---
+ drivers/regulator/qcom_rpm-regulator.c | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+--- a/drivers/regulator/qcom_rpm-regulator.c
++++ b/drivers/regulator/qcom_rpm-regulator.c
+@@ -183,6 +183,13 @@ static const struct regulator_linear_ran
+ REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000),
+ };
+
++static const struct regulator_linear_range smb208_ranges[] = {
++ REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500),
++ REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500),
++ REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000),
++ REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000),
++};
++
+ static const struct regulator_linear_range ncp_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000),
+ };
+@@ -559,6 +566,16 @@ static const struct qcom_rpm_reg pm8921_
+ .parts = &rpm8960_switch_parts,
+ };
+
++static const struct qcom_rpm_reg smb208_smps = {
++ .desc.linear_ranges = smb208_ranges,
++ .desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges),
++ .desc.n_voltages = 235,
++ .desc.ops = &uV_ops,
++ .parts = &rpm8960_smps_parts,
++ .supports_force_mode_auto = false,
++ .supports_force_mode_bypass = false,
++};
++
+ static const struct of_device_id rpm_of_match[] = {
+ { .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo },
+ { .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo },
+@@ -578,6 +595,8 @@ static const struct of_device_id rpm_of_
+ { .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps },
+ { .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp },
+ { .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch },
++
++ { .compatible = "qcom,rpm-smb208", .data = &smb208_smps },
+ { }
+ };
+ MODULE_DEVICE_TABLE(of, rpm_of_match);
--- /dev/null
+From 803926825fa4db007437f76654e3e63bafb9b906 Mon Sep 17 00:00:00 2001
+From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Date: Wed, 26 Nov 2014 13:51:01 -0800
+Subject: [PATCH] regulator: qcom-rpm: Add missing state flag in call to RPM
+
+This adds the missing state parameter to the call down to the RPM. This
+is currently hard coded to the active state, as that's all we're
+supporting at this moment.
+
+Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/regulator/qcom_rpm-regulator.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/regulator/qcom_rpm-regulator.c
++++ b/drivers/regulator/qcom_rpm-regulator.c
+@@ -205,6 +205,7 @@ static int rpm_reg_write(struct qcom_rpm
+ vreg->val[req->word] |= value << req->shift;
+
+ return qcom_rpm_write(vreg->rpm,
++ QCOM_RPM_ACTIVE_STATE,
+ vreg->resource,
+ vreg->val,
+ vreg->parts->request_len);
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -2,6 +2,7 @@
+
+ #include "skeleton.dtsi"
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
++#include <dt-bindings/mfd/qcom-rpm.h>
+ #include <dt-bindings/soc/qcom,gsbi.h>
+ #include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+@@ -77,6 +78,63 @@
+ ranges;
+ compatible = "simple-bus";
+
++ rpm@108000 {
++ compatible = "qcom,rpm-ipq8064";
++ reg = <0x108000 0x1000>;
++ qcom,ipc = <&l2cc 0x8 2>;
++
++ interrupts = <0 19 0>,
++ <0 21 0>,
++ <0 22 0>;
++ interrupt-names = "ack",
++ "err",
++ "wakeup";
++
++ #address-cells = <1>;
++ #size-cells = <0>;
++
++ smb208_s1a: smb208-s1a {
++ compatible = "qcom,rpm-smb208";
++ reg = <QCOM_RPM_SMB208_S1a>;
++
++ regulator-min-microvolt = <1050000>;
++ regulator-max-microvolt = <1150000>;
++
++ qcom,switch-mode-frequency = <1200000>;
++
++ };
++
++ smb208_s1b: smb208-s1b {
++ compatible = "qcom,rpm-smb208";
++ reg = <QCOM_RPM_SMB208_S1b>;
++
++ regulator-min-microvolt = <1050000>;
++ regulator-max-microvolt = <1150000>;
++
++ qcom,switch-mode-frequency = <1200000>;
++ };
++
++ smb208_s2a: smb208-s2a {
++ compatible = "qcom,rpm-smb208";
++ reg = <QCOM_RPM_SMB208_S2a>;
++
++ regulator-min-microvolt = < 800000>;
++ regulator-max-microvolt = <1250000>;
++
++ qcom,switch-mode-frequency = <1200000>;
++ };
++
++ smb208_s2b: smb208-s2b {
++ compatible = "qcom,rpm-smb208";
++ reg = <QCOM_RPM_SMB208_S2b>;
++
++ regulator-min-microvolt = < 800000>;
++ regulator-max-microvolt = <1250000>;
++
++ qcom,switch-mode-frequency = <1200000>;
++ };
++ };
++
+ qcom_pinmux: pinmux@800000 {
+ compatible = "qcom,ipq8064-pinctrl";
+ reg = <0x800000 0x4000>;
+@@ -148,6 +206,12 @@
+ reg = <0x02098000 0x1000>, <0x02008000 0x1000>;
+ };
+
++ l2cc: clock-controller@2011000 {
++ compatible = "qcom,kpss-gcc", "syscon";
++ reg = <0x2011000 0x1000>;
++ clock-output-names = "acpu_l2_aux";
++ };
++
+ saw0: regulator@2089000 {
+ compatible = "qcom,saw2";
+ reg = <0x02089000 0x1000>, <0x02009000 0x1000>;
--- /dev/null
+From 6793b3cd5da817c4be218bd8632f07cf4d2b0d26 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Wed, 19 Nov 2014 14:48:59 +0100
+Subject: [PATCH] clk_mux: Fix set_parent doing the wrong thing when INDEX_BIT
+ && index >= 3
+
+If CLK_MUX_INDEX_BIT is set, then each bit turns on / off a single parent,
+so theoretically multiple parents could be enabled at the same time, but in
+practice only one bit should ever be 1. So to select parent 0, set
+the register (*) to 0x01, to select parent 1 set it 0x02, parent 2, 0x04,
+parent 3, 0x08, etc.
+
+But the current code does:
+
+ if (mux->flags & CLK_MUX_INDEX_BIT)
+ index = (1 << ffs(index));
+
+Which means that:
+
+For an input index of 0, ffs returns 0, so we set the register
+to 0x01, ok.
+
+For an input index of 1, ffs returns 1, so we set the register
+to 0x02, ok.
+
+For an input index of 2, ffs returns 2, so we set the register
+to 0x04, ok.
+
+For an input index of 3, ffs returns 1, so we set the register
+to 0x02, not good!
+
+The code should simply be:
+
+ if (mux->flags & CLK_MUX_INDEX_BIT)
+ index = 1 << index;
+
+Which always does the right thing, this commit fixes this.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Michael Turquette <mturquette@linaro.org>
+---
+ drivers/clk/clk-mux.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/clk-mux.c
++++ b/drivers/clk/clk-mux.c
+@@ -77,7 +77,7 @@ static int clk_mux_set_parent(struct clk
+
+ else {
+ if (mux->flags & CLK_MUX_INDEX_BIT)
+- index = (1 << ffs(index));
++ index = 1 << index;
+
+ if (mux->flags & CLK_MUX_INDEX_ONE)
+ index++;
--- /dev/null
+From 15a02c1f6dd7c2bb150c61d00ffb33f584ff2288 Mon Sep 17 00:00:00 2001
+From: Stephen Boyd <sboyd@codeaurora.org>
+Date: Mon, 19 Jan 2015 18:05:28 -0800
+Subject: [PATCH] clk: Add __clk_mux_determine_rate_closest
+
+Some clock drivers want to find the closest rate on the input of
+a mux instead of a rate that's less than or equal to the desired
+rate. Add a generic mux function to support this.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
+Signed-off-by: Michael Turquette <mturquette@linaro.org>
+---
+ drivers/clk/clk.c | 47 +++++++++++++++++++++++++++++++++++---------
+ include/linux/clk-provider.h | 8 +++++++-
+ 2 files changed, 45 insertions(+), 10 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -695,14 +695,20 @@ struct clk *__clk_lookup(const char *nam
+ return NULL;
+ }
+
+-/*
+- * Helper for finding best parent to provide a given frequency. This can be used
+- * directly as a determine_rate callback (e.g. for a mux), or from a more
+- * complex clock that may combine a mux with other operations.
+- */
+-long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
+- unsigned long *best_parent_rate,
+- struct clk **best_parent_p)
++static bool mux_is_better_rate(unsigned long rate, unsigned long now,
++ unsigned long best, unsigned long flags)
++{
++ if (flags & CLK_MUX_ROUND_CLOSEST)
++ return abs(now - rate) < abs(best - rate);
++
++ return now <= rate && now > best;
++}
++
++static long
++clk_mux_determine_rate_flags(struct clk_hw *hw, unsigned long rate,
++ unsigned long *best_parent_rate,
++ struct clk **best_parent_p,
++ unsigned long flags)
+ {
+ struct clk *clk = hw->clk, *parent, *best_parent = NULL;
+ int i, num_parents;
+@@ -730,7 +736,7 @@ long __clk_mux_determine_rate(struct clk
+ parent_rate = __clk_round_rate(parent, rate);
+ else
+ parent_rate = __clk_get_rate(parent);
+- if (parent_rate <= rate && parent_rate > best) {
++ if (mux_is_better_rate(rate, parent_rate, best, flags)) {
+ best_parent = parent;
+ best = parent_rate;
+ }
+@@ -743,8 +749,31 @@ out:
+
+ return best;
+ }
++
++/*
++ * Helper for finding best parent to provide a given frequency. This can be used
++ * directly as a determine_rate callback (e.g. for a mux), or from a more
++ * complex clock that may combine a mux with other operations.
++ */
++long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *best_parent_rate,
++ struct clk **best_parent_p)
++{
++ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate,
++ best_parent_p, 0);
++}
+ EXPORT_SYMBOL_GPL(__clk_mux_determine_rate);
+
++long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
++ unsigned long *best_parent_rate,
++ struct clk **best_parent_p)
++{
++ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate,
++ best_parent_p,
++ CLK_MUX_ROUND_CLOSEST);
++}
++EXPORT_SYMBOL_GPL(__clk_mux_determine_rate_closest);
++
+ /*** clk api ***/
+
+ void __clk_unprepare(struct clk *clk)
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -382,6 +382,8 @@ struct clk *clk_register_divider_table(s
+ * register, and mask of mux bits are in higher 16-bit of this register.
+ * While setting the mux bits, higher 16-bit should also be updated to
+ * indicate changing mux bits.
++ * CLK_MUX_ROUND_CLOSEST - Use the parent rate that is closest to the desired
++ * frequency.
+ */
+ struct clk_mux {
+ struct clk_hw hw;
+@@ -396,7 +398,8 @@ struct clk_mux {
+ #define CLK_MUX_INDEX_ONE BIT(0)
+ #define CLK_MUX_INDEX_BIT BIT(1)
+ #define CLK_MUX_HIWORD_MASK BIT(2)
+-#define CLK_MUX_READ_ONLY BIT(3) /* mux setting cannot be changed */
++#define CLK_MUX_READ_ONLY BIT(3) /* mux can't be changed */
++#define CLK_MUX_ROUND_CLOSEST BIT(4)
+
+ extern const struct clk_ops clk_mux_ops;
+ extern const struct clk_ops clk_mux_ro_ops;
+@@ -554,6 +557,9 @@ struct clk *__clk_lookup(const char *nam
+ long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p);
++long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
++ unsigned long *best_parent_rate,
++ struct clk **best_parent_p);
+
+ /*
+ * FIXME clock api without lock protection
--- /dev/null
+From 4e3c021fb995bcbb5d1f814d00584cb80eb904a8 Mon Sep 17 00:00:00 2001
+From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
+Date: Mon, 5 Jan 2015 10:52:40 +0100
+Subject: [PATCH] clk: Add clk_unregister_{divider, gate, mux} to close memory
+ leak
+
+The common clk_register_{divider,gate,mux} functions allocated memory
+for internal data which wasn't freed anywhere. Drivers using these
+helpers could only unregister clocks but the memory would still leak.
+
+Add corresponding unregister functions which will release all resources.
+
+Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
+Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
+Signed-off-by: Michael Turquette <mturquette@linaro.org>
+---
+ drivers/clk/clk-divider.c | 16 ++++++++++++++++
+ drivers/clk/clk-gate.c | 16 ++++++++++++++++
+ drivers/clk/clk-mux.c | 16 ++++++++++++++++
+ include/linux/clk-provider.h | 4 ++++
+ 4 files changed, 52 insertions(+)
+
+--- a/drivers/clk/clk-divider.c
++++ b/drivers/clk/clk-divider.c
+@@ -461,3 +461,19 @@ struct clk *clk_register_divider_table(s
+ width, clk_divider_flags, table, lock);
+ }
+ EXPORT_SYMBOL_GPL(clk_register_divider_table);
++
++void clk_unregister_divider(struct clk *clk)
++{
++ struct clk_divider *div;
++ struct clk_hw *hw;
++
++ hw = __clk_get_hw(clk);
++ if (!hw)
++ return;
++
++ div = to_clk_divider(hw);
++
++ clk_unregister(clk);
++ kfree(div);
++}
++EXPORT_SYMBOL_GPL(clk_unregister_divider);
+--- a/drivers/clk/clk-gate.c
++++ b/drivers/clk/clk-gate.c
+@@ -162,3 +162,19 @@ struct clk *clk_register_gate(struct dev
+ return clk;
+ }
+ EXPORT_SYMBOL_GPL(clk_register_gate);
++
++void clk_unregister_gate(struct clk *clk)
++{
++ struct clk_gate *gate;
++ struct clk_hw *hw;
++
++ hw = __clk_get_hw(clk);
++ if (!hw)
++ return;
++
++ gate = to_clk_gate(hw);
++
++ clk_unregister(clk);
++ kfree(gate);
++}
++EXPORT_SYMBOL_GPL(clk_unregister_gate);
+--- a/drivers/clk/clk-mux.c
++++ b/drivers/clk/clk-mux.c
+@@ -177,3 +177,19 @@ struct clk *clk_register_mux(struct devi
+ NULL, lock);
+ }
+ EXPORT_SYMBOL_GPL(clk_register_mux);
++
++void clk_unregister_mux(struct clk *clk)
++{
++ struct clk_mux *mux;
++ struct clk_hw *hw;
++
++ hw = __clk_get_hw(clk);
++ if (!hw)
++ return;
++
++ mux = to_clk_mux(hw);
++
++ clk_unregister(clk);
++ kfree(mux);
++}
++EXPORT_SYMBOL_GPL(clk_unregister_mux);
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -294,6 +294,7 @@ struct clk *clk_register_gate(struct dev
+ const char *parent_name, unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock);
++void clk_unregister_gate(struct clk *clk);
+
+ struct clk_div_table {
+ unsigned int val;
+@@ -361,6 +362,7 @@ struct clk *clk_register_divider_table(s
+ void __iomem *reg, u8 shift, u8 width,
+ u8 clk_divider_flags, const struct clk_div_table *table,
+ spinlock_t *lock);
++void clk_unregister_divider(struct clk *clk);
+
+ /**
+ * struct clk_mux - multiplexer clock
+@@ -414,6 +416,8 @@ struct clk *clk_register_mux_table(struc
+ void __iomem *reg, u8 shift, u32 mask,
+ u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+
++void clk_unregister_mux(struct clk *clk);
++
+ void of_fixed_factor_clk_setup(struct device_node *node);
+
+ /**
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,01/13] ARM: Add Krait L2 register accessor functions
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063051
+Message-Id: <1426920332-9340-2-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>,
+ Mark Rutland <mark.rutland@arm.com>, Russell King <linux@arm.linux.org.uk>,
+ Courtney Cavin <courtney.cavin@sonymobile.com>
+Date: Fri, 20 Mar 2015 23:45:20 -0700
+
+Krait CPUs have a handful of L2 cache controller registers that
+live behind a cp15 based indirection register. First you program
+the indirection register (l2cpselr) to point the L2 'window'
+register (l2cpdr) at what you want to read/write. Then you
+read/write the 'window' register to do what you want. The
+l2cpselr register is not banked per-cpu so we must lock around
+accesses to it to prevent other CPUs from re-pointing l2cpdr
+underneath us.
+
+Cc: Mark Rutland <mark.rutland@arm.com>
+Cc: Russell King <linux@arm.linux.org.uk>
+Cc: Courtney Cavin <courtney.cavin@sonymobile.com>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+arch/arm/common/Kconfig | 3 ++
+ arch/arm/common/Makefile | 1 +
+ arch/arm/common/krait-l2-accessors.c | 58 +++++++++++++++++++++++++++++++
+ arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++
+ 4 files changed, 82 insertions(+)
+ create mode 100644 arch/arm/common/krait-l2-accessors.c
+ create mode 100644 arch/arm/include/asm/krait-l2-accessors.h
+
+--- a/arch/arm/common/Kconfig
++++ b/arch/arm/common/Kconfig
+@@ -9,6 +9,9 @@ config DMABOUNCE
+ bool
+ select ZONE_DMA
+
++config KRAIT_L2_ACCESSORS
++ bool
++
+ config SHARP_LOCOMO
+ bool
+
+--- a/arch/arm/common/Makefile
++++ b/arch/arm/common/Makefile
+@@ -7,6 +7,7 @@ obj-y += firmware.o
+ obj-$(CONFIG_ICST) += icst.o
+ obj-$(CONFIG_SA1111) += sa1111.o
+ obj-$(CONFIG_DMABOUNCE) += dmabounce.o
++obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o
+ obj-$(CONFIG_SHARP_LOCOMO) += locomo.o
+ obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o
+ obj-$(CONFIG_SHARP_SCOOP) += scoop.o
+--- /dev/null
++++ b/arch/arm/common/krait-l2-accessors.c
+@@ -0,0 +1,58 @@
++/*
++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/spinlock.h>
++#include <linux/export.h>
++
++#include <asm/barrier.h>
++#include <asm/krait-l2-accessors.h>
++
++static DEFINE_RAW_SPINLOCK(krait_l2_lock);
++
++void krait_set_l2_indirect_reg(u32 addr, u32 val)
++{
++ unsigned long flags;
++
++ raw_spin_lock_irqsave(&krait_l2_lock, flags);
++ /*
++ * Select the L2 window by poking l2cpselr, then write to the window
++ * via l2cpdr.
++ */
++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr));
++ isb();
++ asm volatile ("mcr p15, 3, %0, c15, c0, 7 @ l2cpdr" : : "r" (val));
++ isb();
++
++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags);
++}
++EXPORT_SYMBOL(krait_set_l2_indirect_reg);
++
++u32 krait_get_l2_indirect_reg(u32 addr)
++{
++ u32 val;
++ unsigned long flags;
++
++ raw_spin_lock_irqsave(&krait_l2_lock, flags);
++ /*
++ * Select the L2 window by poking l2cpselr, then read from the window
++ * via l2cpdr.
++ */
++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr));
++ isb();
++ asm volatile ("mrc p15, 3, %0, c15, c0, 7 @ l2cpdr" : "=r" (val));
++
++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags);
++
++ return val;
++}
++EXPORT_SYMBOL(krait_get_l2_indirect_reg);
+--- /dev/null
++++ b/arch/arm/include/asm/krait-l2-accessors.h
+@@ -0,0 +1,20 @@
++/*
++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#ifndef __ASMARM_KRAIT_L2_ACCESSORS_H
++#define __ASMARM_KRAIT_L2_ACCESSORS_H
++
++extern void krait_set_l2_indirect_reg(u32 addr, u32 val);
++extern u32 krait_get_l2_indirect_reg(u32 addr);
++
++#endif
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,02/13] clk: mux: Split out register accessors for reuse
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063111
+Message-Id: <1426920332-9340-3-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:21 -0700
+
+We want to reuse the logic in clk-mux.c for other clock drivers
+that don't use readl as register accessors. Fortunately, there
+really isn't much to the mux code besides the table indirection
+and quirk flags if you assume any bit shifting and masking has
+been done already. Pull that logic out into reusable functions
+that operate on an optional table and some flags so that other
+drivers can use the same logic.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+drivers/clk/clk-mux.c | 76 +++++++++++++++++++++++++++-----------------
+ include/linux/clk-provider.h | 9 ++++--
+ 2 files changed, 54 insertions(+), 31 deletions(-)
+
+--- a/drivers/clk/clk-mux.c
++++ b/drivers/clk/clk-mux.c
+@@ -29,35 +29,24 @@
+
+ #define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw)
+
+-static u8 clk_mux_get_parent(struct clk_hw *hw)
++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val,
++ unsigned int *table, unsigned long flags)
+ {
+- struct clk_mux *mux = to_clk_mux(hw);
+ int num_parents = __clk_get_num_parents(hw->clk);
+- u32 val;
+
+- /*
+- * FIXME need a mux-specific flag to determine if val is bitwise or numeric
+- * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1
+- * to 0x7 (index starts at one)
+- * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so
+- * val = 0x4 really means "bit 2, index starts at bit 0"
+- */
+- val = clk_readl(mux->reg) >> mux->shift;
+- val &= mux->mask;
+-
+- if (mux->table) {
++ if (table) {
+ int i;
+
+ for (i = 0; i < num_parents; i++)
+- if (mux->table[i] == val)
++ if (table[i] == val)
+ return i;
+ return -EINVAL;
+ }
+
+- if (val && (mux->flags & CLK_MUX_INDEX_BIT))
++ if (val && (flags & CLK_MUX_INDEX_BIT))
+ val = ffs(val) - 1;
+
+- if (val && (mux->flags & CLK_MUX_INDEX_ONE))
++ if (val && (flags & CLK_MUX_INDEX_ONE))
+ val--;
+
+ if (val >= num_parents)
+@@ -65,24 +54,53 @@ static u8 clk_mux_get_parent(struct clk_
+
+ return val;
+ }
++EXPORT_SYMBOL_GPL(clk_mux_get_parent);
+
+-static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
++static u8 _clk_mux_get_parent(struct clk_hw *hw)
+ {
+ struct clk_mux *mux = to_clk_mux(hw);
+ u32 val;
+- unsigned long flags = 0;
+
+- if (mux->table)
+- index = mux->table[index];
++ /*
++ * FIXME need a mux-specific flag to determine if val is bitwise or numeric
++ * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1
++ * to 0x7 (index starts at one)
++ * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so
++ * val = 0x4 really means "bit 2, index starts at bit 0"
++ */
++ val = clk_readl(mux->reg) >> mux->shift;
++ val &= mux->mask;
++
++ return clk_mux_get_parent(hw, val, mux->table, mux->flags);
++}
+
+- else {
+- if (mux->flags & CLK_MUX_INDEX_BIT)
+- index = 1 << index;
++unsigned int clk_mux_reindex(u8 index, unsigned int *table,
++ unsigned long flags)
++{
++ unsigned int val = index;
+
+- if (mux->flags & CLK_MUX_INDEX_ONE)
+- index++;
++ if (table) {
++ val = table[val];
++ } else {
++ if (flags & CLK_MUX_INDEX_BIT)
++ val = 1 << index;
++
++ if (flags & CLK_MUX_INDEX_ONE)
++ val++;
+ }
+
++ return val;
++}
++EXPORT_SYMBOL_GPL(clk_mux_reindex);
++
++static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
++{
++ struct clk_mux *mux = to_clk_mux(hw);
++ u32 val;
++ unsigned long flags = 0;
++
++ index = clk_mux_reindex(index, mux->table, mux->flags);
++
+ if (mux->lock)
+ spin_lock_irqsave(mux->lock, flags);
+
+@@ -102,21 +120,21 @@ static int clk_mux_set_parent(struct clk
+ }
+
+ const struct clk_ops clk_mux_ops = {
+- .get_parent = clk_mux_get_parent,
++ .get_parent = _clk_mux_get_parent,
+ .set_parent = clk_mux_set_parent,
+ .determine_rate = __clk_mux_determine_rate,
+ };
+ EXPORT_SYMBOL_GPL(clk_mux_ops);
+
+ const struct clk_ops clk_mux_ro_ops = {
+- .get_parent = clk_mux_get_parent,
++ .get_parent = _clk_mux_get_parent,
+ };
+ EXPORT_SYMBOL_GPL(clk_mux_ro_ops);
+
+ struct clk *clk_register_mux_table(struct device *dev, const char *name,
+ const char **parent_names, u8 num_parents, unsigned long flags,
+ void __iomem *reg, u8 shift, u32 mask,
+- u8 clk_mux_flags, u32 *table, spinlock_t *lock)
++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock)
+ {
+ struct clk_mux *mux;
+ struct clk *clk;
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -390,7 +390,7 @@ void clk_unregister_divider(struct clk *
+ struct clk_mux {
+ struct clk_hw hw;
+ void __iomem *reg;
+- u32 *table;
++ unsigned int *table;
+ u32 mask;
+ u8 shift;
+ u8 flags;
+@@ -406,6 +406,11 @@ struct clk_mux {
+ extern const struct clk_ops clk_mux_ops;
+ extern const struct clk_ops clk_mux_ro_ops;
+
++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val,
++ unsigned int *table, unsigned long flags);
++unsigned int clk_mux_reindex(u8 index, unsigned int *table,
++ unsigned long flags);
++
+ struct clk *clk_register_mux(struct device *dev, const char *name,
+ const char **parent_names, u8 num_parents, unsigned long flags,
+ void __iomem *reg, u8 shift, u8 width,
+@@ -414,7 +419,7 @@ struct clk *clk_register_mux(struct devi
+ struct clk *clk_register_mux_table(struct device *dev, const char *name,
+ const char **parent_names, u8 num_parents, unsigned long flags,
+ void __iomem *reg, u8 shift, u32 mask,
+- u8 clk_mux_flags, u32 *table, spinlock_t *lock);
++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock);
+
+ void clk_unregister_mux(struct clk *clk);
+
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3, 03/13] clk: Avoid sending high rates to downstream clocks during
+ set_rate
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063271
+Message-Id: <1426920332-9340-4-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:22 -0700
+
+If a clock is on and we call clk_set_rate() on it we may get into
+a situation where the clock temporarily increases in rate
+dramatically while we walk the tree and call .set_rate() ops. For
+example, consider a case where a PLL feeds into a divider.
+Initially the divider is set to divide by 1 and the PLL is
+running fairly slow (100MHz). The downstream consumer of the
+divider output can only handle rates =< 400 MHz, but the divider
+can only choose between divisors of 1 and 4.
+
+ +-----+ +----------------+
+ | PLL |-->| div 1 or div 4 |---> consumer device
+ +-----+ +----------------+
+
+To achieve a rate of 400MHz on the output of the divider, we
+would have to set the rate of the PLL to 1.6 GHz and then divide
+it by 4. The current code would set the PLL to 1.6GHz first while
+the divider is still set to 1, thus causing the downstream
+consumer of the clock to receive a few clock cycles of 1.6GHz
+clock (far beyond it's maximum acceptable rate). We should be
+changing the divider first before increasing the PLL rate to
+avoid this problem.
+
+Therefore, set the rate of any child clocks that are increasing
+in rate from their current rate so that they can increase their
+dividers if necessary. We assume that there isn't such a thing as
+minimum rate requirements.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+drivers/clk/clk.c | 34 ++++++++++++++++++++++------------
+ 1 file changed, 22 insertions(+), 12 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1476,21 +1476,23 @@ static struct clk *clk_propagate_rate_ch
+ * walk down a subtree and set the new rates notifying the rate
+ * change on the way
+ */
+-static void clk_change_rate(struct clk *clk)
++static void clk_change_rate(struct clk *clk, unsigned long best_parent_rate)
+ {
+ struct clk *child;
+ struct hlist_node *tmp;
+ unsigned long old_rate;
+- unsigned long best_parent_rate = 0;
+ bool skip_set_rate = false;
+ struct clk *old_parent;
+
+- old_rate = clk->rate;
++ hlist_for_each_entry(child, &clk->children, child_node) {
++ /* Skip children who will be reparented to another clock */
++ if (child->new_parent && child->new_parent != clk)
++ continue;
++ if (child->new_rate > child->rate)
++ clk_change_rate(child, clk->new_rate);
++ }
+
+- if (clk->new_parent)
+- best_parent_rate = clk->new_parent->rate;
+- else if (clk->parent)
+- best_parent_rate = clk->parent->rate;
++ old_rate = clk->rate;
+
+ if (clk->new_parent && clk->new_parent != clk->parent) {
+ old_parent = __clk_set_parent_before(clk, clk->new_parent);
+@@ -1510,7 +1512,7 @@ static void clk_change_rate(struct clk *
+ if (!skip_set_rate && clk->ops->set_rate)
+ clk->ops->set_rate(clk->hw, clk->new_rate, best_parent_rate);
+
+- clk->rate = clk_recalc(clk, best_parent_rate);
++ clk->rate = clk->new_rate;
+
+ if (clk->notifier_count && old_rate != clk->rate)
+ __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate);
+@@ -1523,12 +1525,13 @@ static void clk_change_rate(struct clk *
+ /* Skip children who will be reparented to another clock */
+ if (child->new_parent && child->new_parent != clk)
+ continue;
+- clk_change_rate(child);
++ if (child->new_rate != child->rate)
++ clk_change_rate(child, clk->new_rate);
+ }
+
+ /* handle the new child who might not be in clk->children yet */
+- if (clk->new_child)
+- clk_change_rate(clk->new_child);
++ if (clk->new_child && clk->new_child->new_rate != clk->new_child->rate)
++ clk_change_rate(clk->new_child, clk->new_rate);
+ }
+
+ /**
+@@ -1556,6 +1559,7 @@ int clk_set_rate(struct clk *clk, unsign
+ {
+ struct clk *top, *fail_clk;
+ int ret = 0;
++ unsigned long parent_rate;
+
+ if (!clk)
+ return 0;
+@@ -1589,8 +1593,13 @@ int clk_set_rate(struct clk *clk, unsign
+ goto out;
+ }
+
++ if (top->parent)
++ parent_rate = top->parent->rate;
++ else
++ parent_rate = 0;
++
+ /* change the rates */
+- clk_change_rate(top);
++ clk_change_rate(top, parent_rate);
+
+ out:
+ clk_prepare_unlock();
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,04/13] clk: Add safe switch hook
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063211
+Message-Id: <1426920332-9340-5-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:23 -0700
+
+Sometimes clocks can't accept their parent source turning off
+while the source is reprogrammed to a different rate. Most
+notably CPU clocks require a way to switch away from the current
+PLL they're running on, reprogram that PLL to a new rate, and
+then switch back to the PLL with the new rate once they're done.
+Add a hook that drivers can implement allowing them to return a
+'safe parent' that they can switch their parent to while the
+upstream source is reprogrammed to support this.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+This patch is good enough for Krait, but soon I'll need to
+support a "safe rate" where we ask a clock what rate it needs to be running
+at to be sure it's within voltage constraints. Right now safe parent
+handles that problem on Krait, but on other platforms it won't work.
+
+ drivers/clk/clk.c | 61 ++++++++++++++++++++++++++++++++++++++------
+ include/linux/clk-provider.h | 1 +
+ 2 files changed, 54 insertions(+), 8 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1350,7 +1350,8 @@ out:
+ static void clk_calc_subtree(struct clk *clk, unsigned long new_rate,
+ struct clk *new_parent, u8 p_index)
+ {
+- struct clk *child;
++ struct clk *child, *parent;
++ struct clk_hw *parent_hw;
+
+ clk->new_rate = new_rate;
+ clk->new_parent = new_parent;
+@@ -1360,6 +1361,18 @@ static void clk_calc_subtree(struct clk
+ if (new_parent && new_parent != clk->parent)
+ new_parent->new_child = clk;
+
++ if (clk->ops->get_safe_parent) {
++ parent_hw = clk->ops->get_safe_parent(clk->hw);
++ if (parent_hw) {
++ parent = parent_hw->clk;
++ p_index = clk_fetch_parent_index(clk, parent);
++ clk->safe_parent_index = p_index;
++ clk->safe_parent = parent;
++ }
++ } else {
++ clk->safe_parent = NULL;
++ }
++
+ hlist_for_each_entry(child, &clk->children, child_node) {
+ child->new_rate = clk_recalc(child, new_rate);
+ clk_calc_subtree(child, child->new_rate, NULL, 0);
+@@ -1439,17 +1452,47 @@ out:
+ * so that in case of an error we can walk down the whole tree again and
+ * abort the change.
+ */
+-static struct clk *clk_propagate_rate_change(struct clk *clk, unsigned long event)
++static struct clk *clk_propagate_rate_change(struct clk *clk,
++ unsigned long event)
+ {
+ struct clk *child, *tmp_clk, *fail_clk = NULL;
++ struct clk *old_parent;
+ int ret = NOTIFY_DONE;
+
+- if (clk->rate == clk->new_rate)
++ if (clk->rate == clk->new_rate && event != POST_RATE_CHANGE)
+ return NULL;
+
++ switch (event) {
++ case PRE_RATE_CHANGE:
++ if (clk->safe_parent)
++ clk->ops->set_parent(clk->hw, clk->safe_parent_index);
++ clk->old_rate = clk->rate;
++ break;
++ case POST_RATE_CHANGE:
++ if (clk->safe_parent) {
++ old_parent = __clk_set_parent_before(clk,
++ clk->new_parent);
++ if (clk->ops->set_rate_and_parent) {
++ clk->ops->set_rate_and_parent(clk->hw,
++ clk->new_rate,
++ clk->new_parent ?
++ clk->new_parent->rate : 0,
++ clk->new_parent_index);
++ } else if (clk->ops->set_parent) {
++ clk->ops->set_parent(clk->hw,
++ clk->new_parent_index);
++ }
++ __clk_set_parent_after(clk, clk->new_parent,
++ old_parent);
++ }
++ break;
++ }
++
+ if (clk->notifier_count) {
+- ret = __clk_notify(clk, event, clk->rate, clk->new_rate);
+- if (ret & NOTIFY_STOP_MASK)
++ if (event != POST_RATE_CHANGE || clk->old_rate != clk->rate)
++ ret = __clk_notify(clk, event, clk->old_rate,
++ clk->new_rate);
++ if (ret & NOTIFY_STOP_MASK && event != POST_RATE_CHANGE)
+ fail_clk = clk;
+ }
+
+@@ -1494,7 +1537,8 @@ static void clk_change_rate(struct clk *
+
+ old_rate = clk->rate;
+
+- if (clk->new_parent && clk->new_parent != clk->parent) {
++ if (clk->new_parent && clk->new_parent != clk->parent &&
++ !clk->safe_parent) {
+ old_parent = __clk_set_parent_before(clk, clk->new_parent);
+
+ if (clk->ops->set_rate_and_parent) {
+@@ -1514,9 +1558,6 @@ static void clk_change_rate(struct clk *
+
+ clk->rate = clk->new_rate;
+
+- if (clk->notifier_count && old_rate != clk->rate)
+- __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate);
+-
+ /*
+ * Use safe iteration, as change_rate can actually swap parents
+ * for certain clock types.
+@@ -1601,6 +1642,8 @@ int clk_set_rate(struct clk *clk, unsign
+ /* change the rates */
+ clk_change_rate(top, parent_rate);
+
++ clk_propagate_rate_change(top, POST_RATE_CHANGE);
++
+ out:
+ clk_prepare_unlock();
+
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -179,6 +179,7 @@ struct clk_ops {
+ struct clk **best_parent_clk);
+ int (*set_parent)(struct clk_hw *hw, u8 index);
+ u8 (*get_parent)(struct clk_hw *hw);
++ struct clk_hw *(*get_safe_parent)(struct clk_hw *hw);
+ int (*set_rate)(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate);
+ int (*set_rate_and_parent)(struct clk_hw *hw,
+--- a/include/linux/clk-private.h
++++ b/include/linux/clk-private.h
+@@ -38,8 +38,11 @@ struct clk {
+ struct clk **parents;
+ u8 num_parents;
+ u8 new_parent_index;
++ u8 safe_parent_index;
+ unsigned long rate;
++ unsigned long old_rate;
+ unsigned long new_rate;
++ struct clk *safe_parent;
+ struct clk *new_parent;
+ struct clk *new_child;
+ unsigned long flags;
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,05/13] clk: qcom: Add support for High-Frequency PLLs (HFPLLs)
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063261
+Message-Id: <1426920332-9340-6-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:24 -0700
+
+HFPLLs are the main frequency source for Krait CPU clocks. Add
+support for changing the rate of these PLLs.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+I'd really like to get rid of __clk_hfpll_init_once() if possible...
+
+ drivers/clk/qcom/Makefile | 1 +
+ drivers/clk/qcom/clk-hfpll.c | 253 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/clk/qcom/clk-hfpll.h | 54 +++++++++
+ 3 files changed, 308 insertions(+)
+ create mode 100644 drivers/clk/qcom/clk-hfpll.c
+ create mode 100644 drivers/clk/qcom/clk-hfpll.h
+
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -6,6 +6,7 @@ clk-qcom-y += clk-pll.o
+ clk-qcom-y += clk-rcg.o
+ clk-qcom-y += clk-rcg2.o
+ clk-qcom-y += clk-branch.o
++clk-qcom-y += clk-hfpll.o
+ clk-qcom-y += reset.o
+
+ obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
+--- /dev/null
++++ b/drivers/clk/qcom/clk-hfpll.c
+@@ -0,0 +1,253 @@
++/*
++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++#include <linux/kernel.h>
++#include <linux/export.h>
++#include <linux/regmap.h>
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/clk-provider.h>
++#include <linux/spinlock.h>
++
++#include "clk-regmap.h"
++#include "clk-hfpll.h"
++
++#define PLL_OUTCTRL BIT(0)
++#define PLL_BYPASSNL BIT(1)
++#define PLL_RESET_N BIT(2)
++
++/* Initialize a HFPLL at a given rate and enable it. */
++static void __clk_hfpll_init_once(struct clk_hw *hw)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++
++ if (likely(h->init_done))
++ return;
++
++ /* Configure PLL parameters for integer mode. */
++ if (hd->config_val)
++ regmap_write(regmap, hd->config_reg, hd->config_val);
++ regmap_write(regmap, hd->m_reg, 0);
++ regmap_write(regmap, hd->n_reg, 1);
++
++ if (hd->user_reg) {
++ u32 regval = hd->user_val;
++ unsigned long rate;
++
++ rate = __clk_get_rate(hw->clk);
++
++ /* Pick the right VCO. */
++ if (hd->user_vco_mask && rate > hd->low_vco_max_rate)
++ regval |= hd->user_vco_mask;
++ regmap_write(regmap, hd->user_reg, regval);
++ }
++
++ if (hd->droop_reg)
++ regmap_write(regmap, hd->droop_reg, hd->droop_val);
++
++ h->init_done = true;
++}
++
++static void __clk_hfpll_enable(struct clk_hw *hw)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ u32 val;
++
++ __clk_hfpll_init_once(hw);
++
++ /* Disable PLL bypass mode. */
++ regmap_update_bits(regmap, hd->mode_reg, PLL_BYPASSNL, PLL_BYPASSNL);
++
++ /*
++ * H/W requires a 5us delay between disabling the bypass and
++ * de-asserting the reset. Delay 10us just to be safe.
++ */
++ udelay(10);
++
++ /* De-assert active-low PLL reset. */
++ regmap_update_bits(regmap, hd->mode_reg, PLL_RESET_N, PLL_RESET_N);
++
++ /* Wait for PLL to lock. */
++ if (hd->status_reg) {
++ do {
++ regmap_read(regmap, hd->status_reg, &val);
++ } while (!(val & BIT(hd->lock_bit)));
++ } else {
++ udelay(60);
++ }
++
++ /* Enable PLL output. */
++ regmap_update_bits(regmap, hd->mode_reg, PLL_OUTCTRL, PLL_OUTCTRL);
++}
++
++/* Enable an already-configured HFPLL. */
++static int clk_hfpll_enable(struct clk_hw *hw)
++{
++ unsigned long flags;
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ u32 mode;
++
++ spin_lock_irqsave(&h->lock, flags);
++ regmap_read(regmap, hd->mode_reg, &mode);
++ if (!(mode & (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL)))
++ __clk_hfpll_enable(hw);
++ spin_unlock_irqrestore(&h->lock, flags);
++
++ return 0;
++}
++
++static void __clk_hfpll_disable(struct clk_hfpll *h)
++{
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++
++ /*
++ * Disable the PLL output, disable test mode, enable the bypass mode,
++ * and assert the reset.
++ */
++ regmap_update_bits(regmap, hd->mode_reg,
++ PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL, 0);
++}
++
++static void clk_hfpll_disable(struct clk_hw *hw)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ unsigned long flags;
++
++ spin_lock_irqsave(&h->lock, flags);
++ __clk_hfpll_disable(h);
++ spin_unlock_irqrestore(&h->lock, flags);
++}
++
++static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ unsigned long rrate;
++
++ rate = clamp(rate, hd->min_rate, hd->max_rate);
++
++ rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate;
++ if (rrate > hd->max_rate)
++ rrate -= *parent_rate;
++
++ return rrate;
++}
++
++/*
++ * For optimization reasons, assumes no downstream clocks are actively using
++ * it.
++ */
++static int clk_hfpll_set_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long parent_rate)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ unsigned long flags;
++ u32 l_val, val;
++ bool enabled;
++
++ l_val = rate / parent_rate;
++
++ spin_lock_irqsave(&h->lock, flags);
++
++ enabled = __clk_is_enabled(hw->clk);
++ if (enabled)
++ __clk_hfpll_disable(h);
++
++ /* Pick the right VCO. */
++ if (hd->user_reg && hd->user_vco_mask) {
++ regmap_read(regmap, hd->user_reg, &val);
++ if (rate <= hd->low_vco_max_rate)
++ val &= ~hd->user_vco_mask;
++ else
++ val |= hd->user_vco_mask;
++ regmap_write(regmap, hd->user_reg, val);
++ }
++
++ regmap_write(regmap, hd->l_reg, l_val);
++
++ if (enabled)
++ __clk_hfpll_enable(hw);
++
++ spin_unlock_irqrestore(&h->lock, flags);
++
++ return 0;
++}
++
++static unsigned long clk_hfpll_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ u32 l_val;
++
++ regmap_read(regmap, hd->l_reg, &l_val);
++
++ return l_val * parent_rate;
++}
++
++static void clk_hfpll_init(struct clk_hw *hw)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ u32 mode, status;
++
++ regmap_read(regmap, hd->mode_reg, &mode);
++ if (mode != (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL)) {
++ __clk_hfpll_init_once(hw);
++ return;
++ }
++
++ if (hd->status_reg) {
++ regmap_read(regmap, hd->status_reg, &status);
++ if (!(status & BIT(hd->lock_bit))) {
++ WARN(1, "HFPLL %s is ON, but not locked!\n",
++ __clk_get_name(hw->clk));
++ clk_hfpll_disable(hw);
++ __clk_hfpll_init_once(hw);
++ }
++ }
++}
++
++static int hfpll_is_enabled(struct clk_hw *hw)
++{
++ struct clk_hfpll *h = to_clk_hfpll(hw);
++ struct hfpll_data const *hd = h->d;
++ struct regmap *regmap = h->clkr.regmap;
++ u32 mode;
++
++ regmap_read(regmap, hd->mode_reg, &mode);
++ mode &= 0x7;
++ return mode == (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL);
++}
++
++const struct clk_ops clk_ops_hfpll = {
++ .enable = clk_hfpll_enable,
++ .disable = clk_hfpll_disable,
++ .is_enabled = hfpll_is_enabled,
++ .round_rate = clk_hfpll_round_rate,
++ .set_rate = clk_hfpll_set_rate,
++ .recalc_rate = clk_hfpll_recalc_rate,
++ .init = clk_hfpll_init,
++};
++EXPORT_SYMBOL_GPL(clk_ops_hfpll);
+--- /dev/null
++++ b/drivers/clk/qcom/clk-hfpll.h
+@@ -0,0 +1,54 @@
++/*
++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++#ifndef __QCOM_CLK_HFPLL_H__
++#define __QCOM_CLK_HFPLL_H__
++
++#include <linux/clk-provider.h>
++#include <linux/spinlock.h>
++#include "clk-regmap.h"
++
++struct hfpll_data {
++ u32 mode_reg;
++ u32 l_reg;
++ u32 m_reg;
++ u32 n_reg;
++ u32 user_reg;
++ u32 droop_reg;
++ u32 config_reg;
++ u32 status_reg;
++ u8 lock_bit;
++
++ u32 droop_val;
++ u32 config_val;
++ u32 user_val;
++ u32 user_vco_mask;
++ unsigned long low_vco_max_rate;
++
++ unsigned long min_rate;
++ unsigned long max_rate;
++};
++
++struct clk_hfpll {
++ struct hfpll_data const *d;
++ int init_done;
++
++ struct clk_regmap clkr;
++ spinlock_t lock;
++};
++
++#define to_clk_hfpll(_hw) \
++ container_of(to_clk_regmap(_hw), struct clk_hfpll, clkr)
++
++extern const struct clk_ops clk_ops_hfpll;
++
++#endif
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,06/13] clk: qcom: Add HFPLL driver
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063231
+Message-Id: <1426920332-9340-7-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org>
+Date: Fri, 20 Mar 2015 23:45:25 -0700
+
+On some devices (MSM8974 for example), the HFPLLs are
+instantiated within the Krait processor subsystem as separate
+register regions. Add a driver for these PLLs so that we can
+provide HFPLL clocks for use by the system.
+
+Cc: <devicetree@vger.kernel.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+.../devicetree/bindings/clock/qcom,hfpll.txt | 40 ++++++++
+ drivers/clk/qcom/Kconfig | 8 ++
+ drivers/clk/qcom/Makefile | 1 +
+ drivers/clk/qcom/hfpll.c | 109 +++++++++++++++++++++
+ 4 files changed, 158 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/clock/qcom,hfpll.txt
+ create mode 100644 drivers/clk/qcom/hfpll.c
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt
+@@ -0,0 +1,40 @@
++High-Frequency PLL (HFPLL)
++
++PROPERTIES
++
++- compatible:
++ Usage: required
++ Value type: <string>
++ Definition: must be "qcom,hfpll"
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: address and size of HPLL registers. An optional second
++ element specifies the address and size of the alias
++ register region.
++
++- clock-output-names:
++ Usage: required
++ Value type: <string>
++ Definition: Name of the PLL. Typically hfpllX where X is a CPU number
++ starting at 0. Otherwise hfpll_Y where Y is more specific
++ such as "l2".
++
++Example:
++
++1) An HFPLL for the L2 cache.
++
++ clock-controller@f9016000 {
++ compatible = "qcom,hfpll";
++ reg = <0xf9016000 0x30>;
++ clock-output-names = "hfpll_l2";
++ };
++
++2) An HFPLL for CPU0. This HFPLL has the alias register region.
++
++ clock-controller@f908a000 {
++ compatible = "qcom,hfpll";
++ reg = <0xf908a000 0x30>, <0xf900a000 0x30>;
++ clock-output-names = "hfpll0";
++ };
+--- a/drivers/clk/qcom/Kconfig
++++ b/drivers/clk/qcom/Kconfig
+@@ -70,3 +70,11 @@ config MSM_MMCC_8974
+ Support for the multimedia clock controller on msm8974 devices.
+ Say Y if you want to support multimedia devices such as display,
+ graphics, video encode/decode, camera, etc.
++
++config QCOM_HFPLL
++ tristate "High-Frequency PLL (HFPLL) Clock Controller"
++ depends on COMMON_CLK_QCOM
++ help
++ Support for the high-frequency PLLs present on Qualcomm devices.
++ Say Y if you want to support CPU frequency scaling on devices
++ such as MSM8974, APQ8084, etc.
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -17,3 +17,4 @@ obj-$(CONFIG_MSM_GCC_8960) += gcc-msm896
+ obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o
+ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
+ obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
++obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
+--- /dev/null
++++ b/drivers/clk/qcom/hfpll.c
+@@ -0,0 +1,109 @@
++/*
++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/of.h>
++#include <linux/clk.h>
++#include <linux/clk-provider.h>
++#include <linux/regmap.h>
++
++#include "clk-regmap.h"
++#include "clk-hfpll.h"
++
++static const struct hfpll_data hdata = {
++ .mode_reg = 0x00,
++ .l_reg = 0x04,
++ .m_reg = 0x08,
++ .n_reg = 0x0c,
++ .user_reg = 0x10,
++ .config_reg = 0x14,
++ .config_val = 0x430405d,
++ .status_reg = 0x1c,
++ .lock_bit = 16,
++
++ .user_val = 0x8,
++ .user_vco_mask = 0x100000,
++ .low_vco_max_rate = 1248000000,
++ .min_rate = 537600000UL,
++ .max_rate = 2900000000UL,
++};
++
++static const struct of_device_id qcom_hfpll_match_table[] = {
++ { .compatible = "qcom,hfpll" },
++ { }
++};
++MODULE_DEVICE_TABLE(of, qcom_hfpll_match_table);
++
++static const struct regmap_config hfpll_regmap_config = {
++ .reg_bits = 32,
++ .reg_stride = 4,
++ .val_bits = 32,
++ .max_register = 0x30,
++ .fast_io = true,
++};
++
++static int qcom_hfpll_probe(struct platform_device *pdev)
++{
++ struct clk *clk;
++ struct resource *res;
++ struct device *dev = &pdev->dev;
++ void __iomem *base;
++ struct regmap *regmap;
++ struct clk_hfpll *h;
++ struct clk_init_data init = {
++ .parent_names = (const char *[]){ "xo" },
++ .num_parents = 1,
++ .ops = &clk_ops_hfpll,
++ };
++
++ h = devm_kzalloc(dev, sizeof(*h), GFP_KERNEL);
++ if (!h)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ base = devm_ioremap_resource(dev, res);
++ if (IS_ERR(base))
++ return PTR_ERR(base);
++
++ regmap = devm_regmap_init_mmio(&pdev->dev, base, &hfpll_regmap_config);
++ if (IS_ERR(regmap))
++ return PTR_ERR(regmap);
++
++ if (of_property_read_string_index(dev->of_node, "clock-output-names",
++ 0, &init.name))
++ return -ENODEV;
++
++ h->d = &hdata;
++ h->clkr.hw.init = &init;
++ spin_lock_init(&h->lock);
++
++ clk = devm_clk_register_regmap(&pdev->dev, &h->clkr);
++
++ return PTR_ERR_OR_ZERO(clk);
++}
++
++static struct platform_driver qcom_hfpll_driver = {
++ .probe = qcom_hfpll_probe,
++ .driver = {
++ .name = "qcom-hfpll",
++ .of_match_table = qcom_hfpll_match_table,
++ },
++};
++module_platform_driver(qcom_hfpll_driver);
++
++MODULE_DESCRIPTION("QCOM HFPLL Clock Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:qcom-hfpll");
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,08/13] clk: qcom: Add IPQ806X's HFPLLs
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063241
+Message-Id: <1426920332-9340-9-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:27 -0700
+
+Describe the HFPLLs present on IPQ806X devices.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+drivers/clk/qcom/gcc-ipq806x.c | 83 ++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 83 insertions(+)
+
+--- a/drivers/clk/qcom/gcc-ipq806x.c
++++ b/drivers/clk/qcom/gcc-ipq806x.c
+@@ -30,6 +30,7 @@
+ #include "clk-pll.h"
+ #include "clk-rcg.h"
+ #include "clk-branch.h"
++#include "clk-hfpll.h"
+ #include "reset.h"
+
+ static struct clk_pll pll0 = {
+@@ -102,6 +103,85 @@ static struct clk_regmap pll8_vote = {
+ },
+ };
+
++static struct hfpll_data hfpll0_data = {
++ .mode_reg = 0x3200,
++ .l_reg = 0x3208,
++ .m_reg = 0x320c,
++ .n_reg = 0x3210,
++ .config_reg = 0x3204,
++ .status_reg = 0x321c,
++ .config_val = 0x7845c665,
++ .droop_reg = 0x3214,
++ .droop_val = 0x0108c000,
++ .min_rate = 600000000UL,
++ .max_rate = 1800000000UL,
++};
++
++static struct clk_hfpll hfpll0 = {
++ .d = &hfpll0_data,
++ .clkr.hw.init = &(struct clk_init_data){
++ .parent_names = (const char *[]){ "pxo" },
++ .num_parents = 1,
++ .name = "hfpll0",
++ .ops = &clk_ops_hfpll,
++ .flags = CLK_IGNORE_UNUSED,
++ },
++ .lock = __SPIN_LOCK_UNLOCKED(hfpll0.lock),
++};
++
++static struct hfpll_data hfpll1_data = {
++ .mode_reg = 0x3240,
++ .l_reg = 0x3248,
++ .m_reg = 0x324c,
++ .n_reg = 0x3250,
++ .config_reg = 0x3244,
++ .status_reg = 0x325c,
++ .config_val = 0x7845c665,
++ .droop_reg = 0x3314,
++ .droop_val = 0x0108c000,
++ .min_rate = 600000000UL,
++ .max_rate = 1800000000UL,
++};
++
++static struct clk_hfpll hfpll1 = {
++ .d = &hfpll1_data,
++ .clkr.hw.init = &(struct clk_init_data){
++ .parent_names = (const char *[]){ "pxo" },
++ .num_parents = 1,
++ .name = "hfpll1",
++ .ops = &clk_ops_hfpll,
++ .flags = CLK_IGNORE_UNUSED,
++ },
++ .lock = __SPIN_LOCK_UNLOCKED(hfpll1.lock),
++};
++
++static struct hfpll_data hfpll_l2_data = {
++ .mode_reg = 0x3300,
++ .l_reg = 0x3308,
++ .m_reg = 0x330c,
++ .n_reg = 0x3310,
++ .config_reg = 0x3304,
++ .status_reg = 0x331c,
++ .config_val = 0x7845c665,
++ .droop_reg = 0x3314,
++ .droop_val = 0x0108c000,
++ .min_rate = 600000000UL,
++ .max_rate = 1800000000UL,
++};
++
++static struct clk_hfpll hfpll_l2 = {
++ .d = &hfpll_l2_data,
++ .clkr.hw.init = &(struct clk_init_data){
++ .parent_names = (const char *[]){ "pxo" },
++ .num_parents = 1,
++ .name = "hfpll_l2",
++ .ops = &clk_ops_hfpll,
++ .flags = CLK_IGNORE_UNUSED,
++ },
++ .lock = __SPIN_LOCK_UNLOCKED(hfpll_l2.lock),
++};
++
++
+ static struct clk_pll pll14 = {
+ .l_reg = 0x31c4,
+ .m_reg = 0x31c8,
+@@ -2261,6 +2341,9 @@ static struct clk_regmap *gcc_ipq806x_cl
+ [USB_FS1_XCVR_SRC] = &usb_fs1_xcvr_clk_src.clkr,
+ [USB_FS1_XCVR_CLK] = &usb_fs1_xcvr_clk.clkr,
+ [USB_FS1_SYSTEM_CLK] = &usb_fs1_sys_clk.clkr,
++ [PLL9] = &hfpll0.clkr,
++ [PLL10] = &hfpll1.clkr,
++ [PLL12] = &hfpll_l2.clkr,
+ };
+
+ static const struct qcom_reset_map gcc_ipq806x_resets[] = {
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,09/13] clk: qcom: Add support for Krait clocks
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063251
+Message-Id: <1426920332-9340-10-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 20 Mar 2015 23:45:28 -0700
+
+The Krait clocks are made up of a series of muxes and a divider
+that choose between a fixed rate clock and dedicated HFPLLs for
+each CPU. Instead of using mmio accesses to remux parents, the
+Krait implementation exposes the remux control via cp15
+registers. Support these clocks.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+drivers/clk/qcom/Kconfig | 4 ++
+ drivers/clk/qcom/Makefile | 1 +
+ drivers/clk/qcom/clk-krait.c | 166 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/clk/qcom/clk-krait.h | 49 +++++++++++++
+ 4 files changed, 220 insertions(+)
+ create mode 100644 drivers/clk/qcom/clk-krait.c
+ create mode 100644 drivers/clk/qcom/clk-krait.h
+
+--- a/drivers/clk/qcom/Kconfig
++++ b/drivers/clk/qcom/Kconfig
+@@ -78,3 +78,7 @@ config QCOM_HFPLL
+ Support for the high-frequency PLLs present on Qualcomm devices.
+ Say Y if you want to support CPU frequency scaling on devices
+ such as MSM8974, APQ8084, etc.
++
++config KRAIT_CLOCKS
++ bool
++ select KRAIT_L2_ACCESSORS
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -6,6 +6,7 @@ clk-qcom-y += clk-pll.o
+ clk-qcom-y += clk-rcg.o
+ clk-qcom-y += clk-rcg2.o
+ clk-qcom-y += clk-branch.o
++clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-krait.o
+ clk-qcom-y += clk-hfpll.o
+ clk-qcom-y += reset.o
+
+--- /dev/null
++++ b/drivers/clk/qcom/clk-krait.c
+@@ -0,0 +1,166 @@
++/*
++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/clk-provider.h>
++#include <linux/spinlock.h>
++
++#include <asm/krait-l2-accessors.h>
++
++#include "clk-krait.h"
++
++/* Secondary and primary muxes share the same cp15 register */
++static DEFINE_SPINLOCK(krait_clock_reg_lock);
++
++#define LPL_SHIFT 8
++static void __krait_mux_set_sel(struct krait_mux_clk *mux, int sel)
++{
++ unsigned long flags;
++ u32 regval;
++
++ spin_lock_irqsave(&krait_clock_reg_lock, flags);
++ regval = krait_get_l2_indirect_reg(mux->offset);
++ regval &= ~(mux->mask << mux->shift);
++ regval |= (sel & mux->mask) << mux->shift;
++ if (mux->lpl) {
++ regval &= ~(mux->mask << (mux->shift + LPL_SHIFT));
++ regval |= (sel & mux->mask) << (mux->shift + LPL_SHIFT);
++ }
++ krait_set_l2_indirect_reg(mux->offset, regval);
++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags);
++
++ /* Wait for switch to complete. */
++ mb();
++ udelay(1);
++}
++
++static int krait_mux_set_parent(struct clk_hw *hw, u8 index)
++{
++ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
++ u32 sel;
++
++ sel = clk_mux_reindex(index, mux->parent_map, 0);
++ mux->en_mask = sel;
++ /* Don't touch mux if CPU is off as it won't work */
++ if (__clk_is_enabled(hw->clk))
++ __krait_mux_set_sel(mux, sel);
++ return 0;
++}
++
++static u8 krait_mux_get_parent(struct clk_hw *hw)
++{
++ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
++ u32 sel;
++
++ sel = krait_get_l2_indirect_reg(mux->offset);
++ sel >>= mux->shift;
++ sel &= mux->mask;
++ mux->en_mask = sel;
++
++ return clk_mux_get_parent(hw, sel, mux->parent_map, 0);
++}
++
++static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw)
++{
++ int i;
++ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
++ int num_parents = __clk_get_num_parents(hw->clk);
++
++ i = mux->safe_sel;
++ for (i = 0; i < num_parents; i++)
++ if (mux->safe_sel == mux->parent_map[i])
++ break;
++
++ return __clk_get_hw(clk_get_parent_by_index(hw->clk, i));
++}
++
++static int krait_mux_enable(struct clk_hw *hw)
++{
++ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
++
++ __krait_mux_set_sel(mux, mux->en_mask);
++
++ return 0;
++}
++
++static void krait_mux_disable(struct clk_hw *hw)
++{
++ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
++
++ __krait_mux_set_sel(mux, mux->safe_sel);
++}
++
++const struct clk_ops krait_mux_clk_ops = {
++ .enable = krait_mux_enable,
++ .disable = krait_mux_disable,
++ .set_parent = krait_mux_set_parent,
++ .get_parent = krait_mux_get_parent,
++ .determine_rate = __clk_mux_determine_rate_closest,
++ .get_safe_parent = krait_mux_get_safe_parent,
++};
++EXPORT_SYMBOL_GPL(krait_mux_clk_ops);
++
++/* The divider can divide by 2, 4, 6 and 8. But we only really need div-2. */
++static long krait_div2_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ *parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), rate * 2);
++ return DIV_ROUND_UP(*parent_rate, 2);
++}
++
++static int krait_div2_set_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long parent_rate)
++{
++ struct krait_div2_clk *d = to_krait_div2_clk(hw);
++ unsigned long flags;
++ u32 val;
++ u32 mask = BIT(d->width) - 1;
++
++ if (d->lpl)
++ mask = mask << (d->shift + LPL_SHIFT) | mask << d->shift;
++
++ spin_lock_irqsave(&krait_clock_reg_lock, flags);
++ val = krait_get_l2_indirect_reg(d->offset);
++ val &= ~mask;
++ krait_set_l2_indirect_reg(d->offset, val);
++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags);
++
++ return 0;
++}
++
++static unsigned long
++krait_div2_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
++{
++ struct krait_div2_clk *d = to_krait_div2_clk(hw);
++ u32 mask = BIT(d->width) - 1;
++ u32 div;
++
++ div = krait_get_l2_indirect_reg(d->offset);
++ div >>= d->shift;
++ div &= mask;
++ div = (div + 1) * 2;
++
++ return DIV_ROUND_UP(parent_rate, div);
++}
++
++const struct clk_ops krait_div2_clk_ops = {
++ .round_rate = krait_div2_round_rate,
++ .set_rate = krait_div2_set_rate,
++ .recalc_rate = krait_div2_recalc_rate,
++};
++EXPORT_SYMBOL_GPL(krait_div2_clk_ops);
+--- /dev/null
++++ b/drivers/clk/qcom/clk-krait.h
+@@ -0,0 +1,49 @@
++/*
++ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#ifndef __QCOM_CLK_KRAIT_H
++#define __QCOM_CLK_KRAIT_H
++
++#include <linux/clk-provider.h>
++
++struct krait_mux_clk {
++ unsigned int *parent_map;
++ bool has_safe_parent;
++ u8 safe_sel;
++ u32 offset;
++ u32 mask;
++ u32 shift;
++ u32 en_mask;
++ bool lpl;
++
++ struct clk_hw hw;
++};
++
++#define to_krait_mux_clk(_hw) container_of(_hw, struct krait_mux_clk, hw)
++
++extern const struct clk_ops krait_mux_clk_ops;
++
++struct krait_div2_clk {
++ u32 offset;
++ u8 width;
++ u32 shift;
++ bool lpl;
++
++ struct clk_hw hw;
++};
++
++#define to_krait_div2_clk(_hw) container_of(_hw, struct krait_div2_clk, hw)
++
++extern const struct clk_ops krait_div2_clk_ops;
++
++#endif
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,10/13] clk: qcom: Add KPSS ACC/GCC driver
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063201
+Message-Id: <1426920332-9340-11-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org>
+Date: Fri, 20 Mar 2015 23:45:29 -0700
+
+The ACC and GCC regions present in KPSSv1 contain registers to
+control clocks and power to each Krait CPU and L2. For CPUfreq
+purposes probe these devices and expose a mux clock that chooses
+between PXO and PLL8.
+
+Cc: <devicetree@vger.kernel.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+.../devicetree/bindings/arm/msm/qcom,kpss-acc.txt | 7 ++
+ .../devicetree/bindings/arm/msm/qcom,kpss-gcc.txt | 28 +++++++
+ drivers/clk/qcom/Kconfig | 8 ++
+ drivers/clk/qcom/Makefile | 1 +
+ drivers/clk/qcom/kpss-xcc.c | 95 ++++++++++++++++++++++
+ 5 files changed, 139 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
+ create mode 100644 drivers/clk/qcom/kpss-xcc.c
+
+--- a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
+@@ -21,10 +21,17 @@ PROPERTIES
+ the register region. An optional second element specifies
+ the base address and size of the alias register region.
+
++- clock-output-names:
++ Usage: optional
++ Value type: <string>
++ Definition: Name of the output clock. Typically acpuX_aux where X is a
++ CPU number starting at 0.
++
+ Example:
+
+ clock-controller@2088000 {
+ compatible = "qcom,kpss-acc-v2";
+ reg = <0x02088000 0x1000>,
+ <0x02008000 0x1000>;
++ clock-output-names = "acpu0_aux";
+ };
+--- /dev/null
++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
+@@ -0,0 +1,28 @@
++Krait Processor Sub-system (KPSS) Global Clock Controller (GCC)
++
++PROPERTIES
++
++- compatible:
++ Usage: required
++ Value type: <string>
++ Definition: should be one of:
++ "qcom,kpss-gcc"
++
++- reg:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: base address and size of the register region
++
++- clock-output-names:
++ Usage: required
++ Value type: <string>
++ Definition: Name of the output clock. Typically acpu_l2_aux indicating
++ an L2 cache auxiliary clock.
++
++Example:
++
++ l2cc: clock-controller@2011000 {
++ compatible = "qcom,kpss-gcc";
++ reg = <0x2011000 0x1000>;
++ clock-output-names = "acpu_l2_aux";
++ };
+--- a/drivers/clk/qcom/Kconfig
++++ b/drivers/clk/qcom/Kconfig
+@@ -79,6 +79,14 @@ config QCOM_HFPLL
+ Say Y if you want to support CPU frequency scaling on devices
+ such as MSM8974, APQ8084, etc.
+
++config KPSS_XCC
++ tristate "KPSS Clock Controller"
++ depends on COMMON_CLK_QCOM
++ help
++ Support for the Krait ACC and GCC clock controllers. Say Y
++ if you want to support CPU frequency scaling on devices such
++ as MSM8960, APQ8064, etc.
++
+ config KRAIT_CLOCKS
+ bool
+ select KRAIT_L2_ACCESSORS
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -18,4 +18,5 @@ obj-$(CONFIG_MSM_GCC_8960) += gcc-msm896
+ obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o
+ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
+ obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
++obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
+ obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
+--- /dev/null
++++ b/drivers/clk/qcom/kpss-xcc.c
+@@ -0,0 +1,95 @@
++/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/clk.h>
++#include <linux/clk-provider.h>
++
++static const char *aux_parents[] = {
++ "pll8_vote",
++ "pxo",
++};
++
++static unsigned int aux_parent_map[] = {
++ 3,
++ 0,
++};
++
++static const struct of_device_id kpss_xcc_match_table[] = {
++ { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL },
++ { .compatible = "qcom,kpss-gcc" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, kpss_xcc_match_table);
++
++static int kpss_xcc_driver_probe(struct platform_device *pdev)
++{
++ const struct of_device_id *id;
++ struct clk *clk;
++ struct resource *res;
++ void __iomem *base;
++ const char *name;
++
++ id = of_match_device(kpss_xcc_match_table, &pdev->dev);
++ if (!id)
++ return -ENODEV;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(base))
++ return PTR_ERR(base);
++
++ if (id->data) {
++ if (of_property_read_string_index(pdev->dev.of_node,
++ "clock-output-names", 0, &name))
++ return -ENODEV;
++ base += 0x14;
++ } else {
++ name = "acpu_l2_aux";
++ base += 0x28;
++ }
++
++ clk = clk_register_mux_table(&pdev->dev, name, aux_parents,
++ ARRAY_SIZE(aux_parents), 0, base, 0, 0x3,
++ 0, aux_parent_map, NULL);
++
++ platform_set_drvdata(pdev, clk);
++
++ return PTR_ERR_OR_ZERO(clk);
++}
++
++static int kpss_xcc_driver_remove(struct platform_device *pdev)
++{
++ clk_unregister_mux(platform_get_drvdata(pdev));
++ return 0;
++}
++
++static struct platform_driver kpss_xcc_driver = {
++ .probe = kpss_xcc_driver_probe,
++ .remove = kpss_xcc_driver_remove,
++ .driver = {
++ .name = "kpss-xcc",
++ .of_match_table = kpss_xcc_match_table,
++ },
++};
++module_platform_driver(kpss_xcc_driver);
++
++MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:kpss-xcc");
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,11/13] clk: qcom: Add Krait clock controller driver
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063121
+Message-Id: <1426920332-9340-12-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org>
+Date: Fri, 20 Mar 2015 23:45:30 -0700
+
+The Krait CPU clocks are made up of a primary mux and secondary
+mux for each CPU and the L2, controlled via cp15 accessors. For
+Kraits within KPSSv1 each secondary mux accepts a different aux
+source, but on KPSSv2 each secondary mux accepts the same aux
+source.
+
+Cc: <devicetree@vger.kernel.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+.../devicetree/bindings/clock/qcom,krait-cc.txt | 22 ++
+ drivers/clk/qcom/Kconfig | 8 +
+ drivers/clk/qcom/Makefile | 1 +
+ drivers/clk/qcom/krait-cc.c | 352 +++++++++++++++++++++
+ 4 files changed, 383 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/clock/qcom,krait-cc.txt
+ create mode 100644 drivers/clk/qcom/krait-cc.c
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/clock/qcom,krait-cc.txt
+@@ -0,0 +1,22 @@
++Krait Clock Controller
++
++PROPERTIES
++
++- compatible:
++ Usage: required
++ Value type: <string>
++ Definition: must be one of:
++ "qcom,krait-cc-v1"
++ "qcom,krait-cc-v2"
++
++- #clock-cells:
++ Usage: required
++ Value type: <u32>
++ Definition: must be 1
++
++Example:
++
++ kraitcc: clock-controller {
++ compatible = "qcom,krait-cc-v1";
++ #clock-cells = <1>;
++ };
+--- a/drivers/clk/qcom/Kconfig
++++ b/drivers/clk/qcom/Kconfig
+@@ -87,6 +87,14 @@ config KPSS_XCC
+ if you want to support CPU frequency scaling on devices such
+ as MSM8960, APQ8064, etc.
+
++config KRAITCC
++ tristate "Krait Clock Controller"
++ depends on COMMON_CLK_QCOM && ARM
++ select KRAIT_CLOCKS
++ help
++ Support for the Krait CPU clocks on Qualcomm devices.
++ Say Y if you want to support CPU frequency scaling.
++
+ config KRAIT_CLOCKS
+ bool
+ select KRAIT_L2_ACCESSORS
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -20,3 +20,4 @@ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8
+ obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
+ obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
+ obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
++obj-$(CONFIG_KRAITCC) += krait-cc.o
+--- /dev/null
++++ b/drivers/clk/qcom/krait-cc.c
+@@ -0,0 +1,352 @@
++/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/clk.h>
++#include <linux/clk-provider.h>
++#include <linux/slab.h>
++
++#include "clk-krait.h"
++
++static unsigned int sec_mux_map[] = {
++ 2,
++ 0,
++};
++
++static unsigned int pri_mux_map[] = {
++ 1,
++ 2,
++ 0,
++};
++
++static int
++krait_add_div(struct device *dev, int id, const char *s, unsigned offset)
++{
++ struct krait_div2_clk *div;
++ struct clk_init_data init = {
++ .num_parents = 1,
++ .ops = &krait_div2_clk_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ };
++ const char *p_names[1];
++ struct clk *clk;
++
++ div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
++ if (!div)
++ return -ENOMEM;
++
++ div->width = 2;
++ div->shift = 6;
++ div->lpl = id >= 0;
++ div->offset = offset;
++ div->hw.init = &init;
++
++ init.name = kasprintf(GFP_KERNEL, "hfpll%s_div", s);
++ if (!init.name)
++ return -ENOMEM;
++
++ init.parent_names = p_names;
++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s);
++ if (!p_names[0]) {
++ kfree(init.name);
++ return -ENOMEM;
++ }
++
++ clk = devm_clk_register(dev, &div->hw);
++ kfree(p_names[0]);
++ kfree(init.name);
++
++ return PTR_ERR_OR_ZERO(clk);
++}
++
++static int
++krait_add_sec_mux(struct device *dev, int id, const char *s, unsigned offset,
++ bool unique_aux)
++{
++ struct krait_mux_clk *mux;
++ static const char *sec_mux_list[] = {
++ "acpu_aux",
++ "qsb",
++ };
++ struct clk_init_data init = {
++ .parent_names = sec_mux_list,
++ .num_parents = ARRAY_SIZE(sec_mux_list),
++ .ops = &krait_mux_clk_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ };
++ struct clk *clk;
++
++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
++ if (!mux)
++ return -ENOMEM;
++
++ mux->offset = offset;
++ mux->lpl = id >= 0;
++ mux->has_safe_parent = true;
++ mux->safe_sel = 2;
++ mux->mask = 0x3;
++ mux->shift = 2;
++ mux->parent_map = sec_mux_map;
++ mux->hw.init = &init;
++
++ init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s);
++ if (!init.name)
++ return -ENOMEM;
++
++ if (unique_aux) {
++ sec_mux_list[0] = kasprintf(GFP_KERNEL, "acpu%s_aux", s);
++ if (!sec_mux_list[0]) {
++ clk = ERR_PTR(-ENOMEM);
++ goto err_aux;
++ }
++ }
++
++ clk = devm_clk_register(dev, &mux->hw);
++
++ if (unique_aux)
++ kfree(sec_mux_list[0]);
++err_aux:
++ kfree(init.name);
++ return PTR_ERR_OR_ZERO(clk);
++}
++
++static struct clk *
++krait_add_pri_mux(struct device *dev, int id, const char *s, unsigned offset)
++{
++ struct krait_mux_clk *mux;
++ const char *p_names[3];
++ struct clk_init_data init = {
++ .parent_names = p_names,
++ .num_parents = ARRAY_SIZE(p_names),
++ .ops = &krait_mux_clk_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ };
++ struct clk *clk;
++
++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
++ if (!mux)
++ return ERR_PTR(-ENOMEM);
++
++ mux->has_safe_parent = true;
++ mux->safe_sel = 0;
++ mux->mask = 0x3;
++ mux->shift = 0;
++ mux->offset = offset;
++ mux->lpl = id >= 0;
++ mux->parent_map = pri_mux_map;
++ mux->hw.init = &init;
++
++ init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s);
++ if (!init.name)
++ return ERR_PTR(-ENOMEM);
++
++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s);
++ if (!p_names[0]) {
++ clk = ERR_PTR(-ENOMEM);
++ goto err_p0;
++ }
++
++ p_names[1] = kasprintf(GFP_KERNEL, "hfpll%s_div", s);
++ if (!p_names[1]) {
++ clk = ERR_PTR(-ENOMEM);
++ goto err_p1;
++ }
++
++ p_names[2] = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s);
++ if (!p_names[2]) {
++ clk = ERR_PTR(-ENOMEM);
++ goto err_p2;
++ }
++
++ clk = devm_clk_register(dev, &mux->hw);
++
++ kfree(p_names[2]);
++err_p2:
++ kfree(p_names[1]);
++err_p1:
++ kfree(p_names[0]);
++err_p0:
++ kfree(init.name);
++ return clk;
++}
++
++/* id < 0 for L2, otherwise id == physical CPU number */
++static struct clk *krait_add_clks(struct device *dev, int id, bool unique_aux)
++{
++ int ret;
++ unsigned offset;
++ void *p = NULL;
++ const char *s;
++ struct clk *clk;
++
++ if (id >= 0) {
++ offset = 0x4501 + (0x1000 * id);
++ s = p = kasprintf(GFP_KERNEL, "%d", id);
++ if (!s)
++ return ERR_PTR(-ENOMEM);
++ } else {
++ offset = 0x500;
++ s = "_l2";
++ }
++
++ ret = krait_add_div(dev, id, s, offset);
++ if (ret) {
++ clk = ERR_PTR(ret);
++ goto err;
++ }
++
++ ret = krait_add_sec_mux(dev, id, s, offset, unique_aux);
++ if (ret) {
++ clk = ERR_PTR(ret);
++ goto err;
++ }
++
++ clk = krait_add_pri_mux(dev, id, s, offset);
++err:
++ kfree(p);
++ return clk;
++}
++
++static struct clk *krait_of_get(struct of_phandle_args *clkspec, void *data)
++{
++ unsigned int idx = clkspec->args[0];
++ struct clk **clks = data;
++
++ if (idx >= 5) {
++ pr_err("%s: invalid clock index %d\n", __func__, idx);
++ return ERR_PTR(-EINVAL);
++ }
++
++ return clks[idx] ? : ERR_PTR(-ENODEV);
++}
++
++static const struct of_device_id krait_cc_match_table[] = {
++ { .compatible = "qcom,krait-cc-v1", (void *)1UL },
++ { .compatible = "qcom,krait-cc-v2" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, krait_cc_match_table);
++
++static int krait_cc_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ const struct of_device_id *id;
++ unsigned long cur_rate, aux_rate;
++ int cpu;
++ struct clk *clk;
++ struct clk **clks;
++ struct clk *l2_pri_mux_clk;
++
++ id = of_match_device(krait_cc_match_table, dev);
++ if (!id)
++ return -ENODEV;
++
++ /* Rate is 1 because 0 causes problems for __clk_mux_determine_rate */
++ clk = clk_register_fixed_rate(dev, "qsb", NULL, CLK_IS_ROOT, 1);
++ if (IS_ERR(clk))
++ return PTR_ERR(clk);
++
++ if (!id->data) {
++ clk = clk_register_fixed_factor(dev, "acpu_aux",
++ "gpll0_vote", 0, 1, 2);
++ if (IS_ERR(clk))
++ return PTR_ERR(clk);
++ }
++
++ /* Krait configurations have at most 4 CPUs and one L2 */
++ clks = devm_kcalloc(dev, 5, sizeof(*clks), GFP_KERNEL);
++ if (!clks)
++ return -ENOMEM;
++
++ for_each_possible_cpu(cpu) {
++ clk = krait_add_clks(dev, cpu, id->data);
++ if (IS_ERR(clk))
++ return PTR_ERR(clk);
++ clks[cpu] = clk;
++ }
++
++ l2_pri_mux_clk = krait_add_clks(dev, -1, id->data);
++ if (IS_ERR(l2_pri_mux_clk))
++ return PTR_ERR(l2_pri_mux_clk);
++ clks[4] = l2_pri_mux_clk;
++
++ /*
++ * We don't want the CPU or L2 clocks to be turned off at late init
++ * if CPUFREQ or HOTPLUG configs are disabled. So, bump up the
++ * refcount of these clocks. Any cpufreq/hotplug manager can assume
++ * that the clocks have already been prepared and enabled by the time
++ * they take over.
++ */
++ for_each_online_cpu(cpu) {
++ clk_prepare_enable(l2_pri_mux_clk);
++ WARN(clk_prepare_enable(clks[cpu]),
++ "Unable to turn on CPU%d clock", cpu);
++ }
++
++ /*
++ * Force reinit of HFPLLs and muxes to overwrite any potential
++ * incorrect configuration of HFPLLs and muxes by the bootloader.
++ * While at it, also make sure the cores are running at known rates
++ * and print the current rate.
++ *
++ * The clocks are set to aux clock rate first to make sure the
++ * secondary mux is not sourcing off of QSB. The rate is then set to
++ * two different rates to force a HFPLL reinit under all
++ * circumstances.
++ */
++ cur_rate = clk_get_rate(l2_pri_mux_clk);
++ aux_rate = 384000000;
++ if (cur_rate == 1) {
++ pr_info("L2 @ QSB rate. Forcing new rate.\n");
++ cur_rate = aux_rate;
++ }
++ clk_set_rate(l2_pri_mux_clk, aux_rate);
++ clk_set_rate(l2_pri_mux_clk, 2);
++ clk_set_rate(l2_pri_mux_clk, cur_rate);
++ pr_info("L2 @ %lu KHz\n", clk_get_rate(l2_pri_mux_clk) / 1000);
++ for_each_possible_cpu(cpu) {
++ clk = clks[cpu];
++ cur_rate = clk_get_rate(clk);
++ if (cur_rate == 1) {
++ pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu);
++ cur_rate = aux_rate;
++ }
++ clk_set_rate(clk, aux_rate);
++ clk_set_rate(clk, 2);
++ clk_set_rate(clk, cur_rate);
++ pr_info("CPU%d @ %lu KHz\n", cpu, clk_get_rate(clk) / 1000);
++ }
++
++ of_clk_add_provider(dev->of_node, krait_of_get, clks);
++
++ return 0;
++}
++
++static struct platform_driver krait_cc_driver = {
++ .probe = krait_cc_probe,
++ .driver = {
++ .name = "krait-cc",
++ .of_match_table = krait_cc_match_table,
++ },
++};
++module_platform_driver(krait_cc_driver);
++
++MODULE_DESCRIPTION("Krait CPU Clock Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:krait-cc");
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,12/13] cpufreq: Add module to register cpufreq on Krait CPUs
+From: Stephen Boyd <sboyd@codeaurora.org>
+X-Patchwork-Id: 6063191
+Message-Id: <1426920332-9340-13-git-send-email-sboyd@codeaurora.org>
+To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
+Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+ linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
+ Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org>
+Date: Fri, 20 Mar 2015 23:45:31 -0700
+
+Register a cpufreq-generic device whenever we detect that a
+"qcom,krait" compatible CPU is present in DT.
+
+Cc: <devicetree@vger.kernel.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+.../devicetree/bindings/arm/msm/qcom,pvs.txt | 38 ++++
+ drivers/cpufreq/Kconfig.arm | 9 +
+ drivers/cpufreq/Makefile | 1 +
+ drivers/cpufreq/qcom-cpufreq.c | 204 +++++++++++++++++++++
+ 4 files changed, 252 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt
+ create mode 100644 drivers/cpufreq/qcom-cpufreq.c
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt
+@@ -0,0 +1,38 @@
++Qualcomm Process Voltage Scaling Tables
++
++The node name is required to be "qcom,pvs". There shall only be one
++such node present in the root of the tree.
++
++PROPERTIES
++
++- qcom,pvs-format-a or qcom,pvs-format-b:
++ Usage: required
++ Value type: <empty>
++ Definition: Indicates the format of qcom,speedX-pvsY-bin-vZ properties.
++ If qcom,pvs-format-a is used the table is two columns
++ (frequency and voltage in that order). If qcom,pvs-format-b is used the table is three columns (frequency, voltage,
++ and current in that order).
++
++- qcom,speedX-pvsY-bin-vZ:
++ Usage: required
++ Value type: <prop-encoded-array>
++ Definition: The PVS table corresponding to the speed bin X, pvs bin Y,
++ and version Z.
++Example:
++
++ qcom,pvs {
++ qcom,pvs-format-a;
++ qcom,speed0-pvs0-bin-v0 =
++ < 384000000 950000 >,
++ < 486000000 975000 >,
++ < 594000000 1000000 >,
++ < 702000000 1025000 >,
++ < 810000000 1075000 >,
++ < 918000000 1100000 >,
++ < 1026000000 1125000 >,
++ < 1134000000 1175000 >,
++ < 1242000000 1200000 >,
++ < 1350000000 1225000 >,
++ < 1458000000 1237500 >,
++ < 1512000000 1250000 >;
++ };
+--- a/drivers/cpufreq/Kconfig.arm
++++ b/drivers/cpufreq/Kconfig.arm
+@@ -129,6 +129,15 @@ config ARM_OMAP2PLUS_CPUFREQ
+ depends on ARCH_OMAP2PLUS
+ default ARCH_OMAP2PLUS
+
++config ARM_QCOM_CPUFREQ
++ tristate "Qualcomm based"
++ depends on ARCH_QCOM
++ select PM_OPP
++ help
++ This adds the CPUFreq driver for Qualcomm SoC based boards.
++
++ If in doubt, say N.
++
+ config ARM_S3C_CPUFREQ
+ bool
+ help
+--- a/drivers/cpufreq/Makefile
++++ b/drivers/cpufreq/Makefile
+@@ -64,6 +64,7 @@ obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += o
+ obj-$(CONFIG_PXA25x) += pxa2xx-cpufreq.o
+ obj-$(CONFIG_PXA27x) += pxa2xx-cpufreq.o
+ obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o
++obj-$(CONFIG_ARM_QCOM_CPUFREQ) += qcom-cpufreq.o
+ obj-$(CONFIG_ARM_S3C24XX_CPUFREQ) += s3c24xx-cpufreq.o
+ obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o
+ obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o
+--- /dev/null
++++ b/drivers/cpufreq/qcom-cpufreq.c
+@@ -0,0 +1,204 @@
++/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/cpu.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/pm_opp.h>
++#include <linux/slab.h>
++#include <linux/cpufreq-dt.h>
++
++static void __init get_krait_bin_format_a(int *speed, int *pvs, int *pvs_ver)
++{
++ void __iomem *base;
++ u32 pte_efuse;
++
++ *speed = *pvs = *pvs_ver = 0;
++
++ base = ioremap(0x007000c0, 4);
++ if (!base) {
++ pr_warn("Unable to read efuse data. Defaulting to 0!\n");
++ return;
++ }
++
++ pte_efuse = readl_relaxed(base);
++ iounmap(base);
++
++ *speed = pte_efuse & 0xf;
++ if (*speed == 0xf)
++ *speed = (pte_efuse >> 4) & 0xf;
++
++ if (*speed == 0xf) {
++ *speed = 0;
++ pr_warn("Speed bin: Defaulting to %d\n", *speed);
++ } else {
++ pr_info("Speed bin: %d\n", *speed);
++ }
++
++ *pvs = (pte_efuse >> 10) & 0x7;
++ if (*pvs == 0x7)
++ *pvs = (pte_efuse >> 13) & 0x7;
++
++ if (*pvs == 0x7) {
++ *pvs = 0;
++ pr_warn("PVS bin: Defaulting to %d\n", *pvs);
++ } else {
++ pr_info("PVS bin: %d\n", *pvs);
++ }
++}
++
++static void __init get_krait_bin_format_b(int *speed, int *pvs, int *pvs_ver)
++{
++ u32 pte_efuse, redundant_sel;
++ void __iomem *base;
++
++ *speed = 0;
++ *pvs = 0;
++ *pvs_ver = 0;
++
++ base = ioremap(0xfc4b80b0, 8);
++ if (!base) {
++ pr_warn("Unable to read efuse data. Defaulting to 0!\n");
++ return;
++ }
++
++ pte_efuse = readl_relaxed(base);
++ redundant_sel = (pte_efuse >> 24) & 0x7;
++ *speed = pte_efuse & 0x7;
++ /* 4 bits of PVS are in efuse register bits 31, 8-6. */
++ *pvs = ((pte_efuse >> 28) & 0x8) | ((pte_efuse >> 6) & 0x7);
++ *pvs_ver = (pte_efuse >> 4) & 0x3;
++
++ switch (redundant_sel) {
++ case 1:
++ *speed = (pte_efuse >> 27) & 0xf;
++ break;
++ case 2:
++ *pvs = (pte_efuse >> 27) & 0xf;
++ break;
++ }
++
++ /* Check SPEED_BIN_BLOW_STATUS */
++ if (pte_efuse & BIT(3)) {
++ pr_info("Speed bin: %d\n", *speed);
++ } else {
++ pr_warn("Speed bin not set. Defaulting to 0!\n");
++ *speed = 0;
++ }
++
++ /* Check PVS_BLOW_STATUS */
++ pte_efuse = readl_relaxed(base + 0x4) & BIT(21);
++ if (pte_efuse) {
++ pr_info("PVS bin: %d\n", *pvs);
++ } else {
++ pr_warn("PVS bin not set. Defaulting to 0!\n");
++ *pvs = 0;
++ }
++
++ pr_info("PVS version: %d\n", *pvs_ver);
++ iounmap(base);
++}
++
++static int __init qcom_cpufreq_populate_opps(void)
++{
++ int len, rows, cols, i, k, speed, pvs, pvs_ver;
++ char table_name[] = "qcom,speedXX-pvsXX-bin-vXX";
++ struct device_node *np;
++ struct device *dev;
++ int cpu = 0;
++
++ np = of_find_node_by_name(NULL, "qcom,pvs");
++ if (!np)
++ return -ENODEV;
++
++ if (of_property_read_bool(np, "qcom,pvs-format-a")) {
++ get_krait_bin_format_a(&speed, &pvs, &pvs_ver);
++ cols = 2;
++ } else if (of_property_read_bool(np, "qcom,pvs-format-b")) {
++ get_krait_bin_format_b(&speed, &pvs, &pvs_ver);
++ cols = 3;
++ } else {
++ return -ENODEV;
++ }
++
++ snprintf(table_name, sizeof(table_name),
++ "qcom,speed%d-pvs%d-bin-v%d", speed, pvs, pvs_ver);
++
++ if (!of_find_property(np, table_name, &len))
++ return -EINVAL;
++
++ len /= sizeof(u32);
++ if (len % cols || len == 0)
++ return -EINVAL;
++
++ rows = len / cols;
++
++ for (i = 0, k = 0; i < rows; i++) {
++ u32 freq, volt;
++
++ of_property_read_u32_index(np, table_name, k++, &freq);
++ of_property_read_u32_index(np, table_name, k++, &volt);
++ while (k % cols)
++ k++; /* Skip uA entries if present */
++ for (cpu = 0; cpu < num_possible_cpus(); cpu++) {
++ dev = get_cpu_device(cpu);
++ if (!dev)
++ return -ENODEV;
++ if (dev_pm_opp_add(dev, freq, volt))
++ pr_warn("failed to add OPP %u\n", freq);
++ }
++ }
++
++ return 0;
++}
++
++static int __init qcom_cpufreq_driver_init(void)
++{
++ struct cpufreq_dt_platform_data pdata = { .independent_clocks = true };
++ struct platform_device_info devinfo = {
++ .name = "cpufreq-dt",
++ .data = &pdata,
++ .size_data = sizeof(pdata),
++ };
++ struct device *cpu_dev;
++ struct device_node *np;
++ int ret;
++
++ cpu_dev = get_cpu_device(0);
++ if (!cpu_dev)
++ return -ENODEV;
++
++ np = of_node_get(cpu_dev->of_node);
++ if (!np)
++ return -ENOENT;
++
++ if (!of_device_is_compatible(np, "qcom,krait")) {
++ of_node_put(np);
++ return -ENODEV;
++ }
++ of_node_put(np);
++
++ ret = qcom_cpufreq_populate_opps();
++ if (ret)
++ return ret;
++
++ return PTR_ERR_OR_ZERO(platform_device_register_full(&devinfo));
++}
++module_init(qcom_cpufreq_driver_init);
++
++MODULE_DESCRIPTION("Qualcomm CPUfreq driver");
++MODULE_LICENSE("GPL v2");
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -25,6 +25,11 @@
+ next-level-cache = <&L2>;
+ qcom,acc = <&acc0>;
+ qcom,saw = <&saw0>;
++ clocks = <&kraitcc 0>;
++ clock-names = "cpu";
++ clock-latency = <100000>;
++ core-supply = <&smb208_s2a>;
++ voltage-tolerance = <5>;
+ };
+
+ cpu@1 {
+@@ -35,11 +40,24 @@
+ next-level-cache = <&L2>;
+ qcom,acc = <&acc1>;
+ qcom,saw = <&saw1>;
++ clocks = <&kraitcc 1>;
++ clock-names = "cpu";
++ clock-latency = <100000>;
++ core-supply = <&smb208_s2b>;
+ };
+
+ L2: l2-cache {
+ compatible = "cache";
+ cache-level = <2>;
++ clocks = <&kraitcc 4>;
++ clock-names = "cache";
++ cache-points-kHz = <
++ /* kHz uV CPU kHz */
++ 1200000 1150000 1200000
++ 1000000 1100000 600000
++ 384000 1100000 384000
++ >;
++ vdd_dig-supply = <&smb208_s1a>;
+ };
+ };
+
+@@ -72,6 +90,46 @@
+ };
+ };
+
++ kraitcc: clock-controller {
++ compatible = "qcom,krait-cc-v1";
++ #clock-cells = <1>;
++ };
++
++ qcom,pvs {
++ qcom,pvs-format-a;
++ qcom,speed0-pvs0-bin-v0 =
++ < 1400000000 1250000 >,
++ < 1200000000 1200000 >,
++ < 1000000000 1150000 >,
++ < 800000000 1100000 >,
++ < 600000000 1050000 >,
++ < 384000000 1000000 >;
++
++ qcom,speed0-pvs1-bin-v0 =
++ < 1400000000 1175000 >,
++ < 1200000000 1125000 >,
++ < 1000000000 1075000 >,
++ < 800000000 1025000 >,
++ < 600000000 975000 >,
++ < 384000000 925000 >;
++
++ qcom,speed0-pvs2-bin-v0 =
++ < 1400000000 1125000 >,
++ < 1200000000 1075000 >,
++ < 1000000000 1025000 >,
++ < 800000000 995000 >,
++ < 600000000 925000 >,
++ < 384000000 875000 >;
++
++ qcom,speed0-pvs3-bin-v0 =
++ < 1400000000 1050000 >,
++ < 1200000000 1000000 >,
++ < 1000000000 950000 >,
++ < 800000000 900000 >,
++ < 600000000 850000 >,
++ < 384000000 800000 >;
++ };
++
+ soc: soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+@@ -199,11 +257,13 @@
+ acc0: clock-controller@2088000 {
+ compatible = "qcom,kpss-acc-v1";
+ reg = <0x02088000 0x1000>, <0x02008000 0x1000>;
++ clock-output-names = "acpu0_aux";
+ };
+
+ acc1: clock-controller@2098000 {
+ compatible = "qcom,kpss-acc-v1";
+ reg = <0x02098000 0x1000>, <0x02008000 0x1000>;
++ clock-output-names = "acpu1_aux";
+ };
+
+ l2cc: clock-controller@2011000 {
--- /dev/null
+From dd77db4143290689d3a5e1ec61627233d0711b66 Mon Sep 17 00:00:00 2001
+From: Stephen Boyd <sboyd@codeaurora.org>
+Date: Fri, 30 May 2014 16:36:11 -0700
+Subject: [PATCH] FROMLIST: cpufreq: Add a cpufreq-krait based on cpufreq-cpu0
+
+Krait processors have individual clocks for each CPU that can
+scale independently from one another. cpufreq-cpu0 is fairly
+close to this, but assumes that there is only one clock for all
+CPUs. Add a driver to support the Krait configuration.
+
+TODO: Merge into cpufreq-cpu0? Or make generic?
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+
+---
+ drivers/cpufreq/Kconfig | 13 +++
+ drivers/cpufreq/Makefile | 1 +
+ drivers/cpufreq/cpufreq-krait.c | 190 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 204 insertions(+)
+ create mode 100644 drivers/cpufreq/cpufreq-krait.c
+
+--- a/drivers/cpufreq/Kconfig
++++ b/drivers/cpufreq/Kconfig
+@@ -196,6 +196,19 @@ config CPUFREQ_DT
+
+ If in doubt, say N.
+
++config GENERIC_CPUFREQ_KRAIT
++ tristate "Krait cpufreq driver"
++ depends on HAVE_CLK && OF
++ # if CPU_THERMAL is on and THERMAL=m, CPU0 cannot be =y:
++ depends on !CPU_THERMAL || THERMAL
++ select PM_OPP
++ help
++ This adds a generic cpufreq driver for CPU0 frequency management.
++ It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
++ systems which share clock and voltage across all CPUs.
++
++ If in doubt, say N.
++
+ menu "x86 CPU frequency scaling drivers"
+ depends on X86
+ source "drivers/cpufreq/Kconfig.x86"
+--- a/drivers/cpufreq/Makefile
++++ b/drivers/cpufreq/Makefile
+@@ -14,6 +14,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE)
+ obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o
+
+ obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o
++obj-$(CONFIG_GENERIC_CPUFREQ_KRAIT) += cpufreq-krait.o
+
+ ##################################################################################
+ # x86 drivers.
+--- /dev/null
++++ b/drivers/cpufreq/cpufreq-krait.c
+@@ -0,0 +1,390 @@
++/*
++ * Copyright (C) 2012 Freescale Semiconductor, Inc.
++ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
++ *
++ * The OPP code in function krait_set_target() is reused from
++ * drivers/cpufreq/omap-cpufreq.c
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/clk.h>
++#include <linux/cpu.h>
++#include <linux/cpu_cooling.h>
++#include <linux/cpufreq.h>
++#include <linux/cpumask.h>
++#include <linux/err.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/pm_opp.h>
++#include <linux/platform_device.h>
++#include <linux/regulator/consumer.h>
++#include <linux/slab.h>
++#include <linux/thermal.h>
++
++static unsigned int transition_latency;
++static unsigned int voltage_tolerance; /* in percentage */
++
++static struct device *cpu_dev;
++static DEFINE_PER_CPU(struct clk *, krait_cpu_clks);
++static DEFINE_PER_CPU(struct regulator *, krait_supply_core);
++static struct cpufreq_frequency_table *freq_table;
++static struct thermal_cooling_device *cdev;
++
++struct cache_points {
++ unsigned long cache_freq;
++ unsigned int cache_volt;
++ unsigned long cpu_freq;
++};
++
++static struct regulator *krait_l2_reg;
++static struct clk *krait_l2_clk;
++static struct cache_points *krait_l2_points;
++static int nr_krait_l2_points;
++
++static int krait_parse_cache_points(struct device *dev,
++ struct device_node *of_node)
++{
++ const struct property *prop;
++ const __be32 *val;
++ int nr, i;
++
++ prop = of_find_property(of_node, "cache-points-kHz", NULL);
++ if (!prop)
++ return -ENODEV;
++ if (!prop->value)
++ return -ENODATA;
++
++ /*
++ * Each OPP is a set of tuples consisting of frequency and
++ * cpu-frequency like <freq-kHz volt-uV freq-kHz>.
++ */
++ nr = prop->length / sizeof(u32);
++ if (nr % 3) {
++ dev_err(dev, "%s: Invalid cache points\n", __func__);
++ return -EINVAL;
++ }
++ nr /= 3;
++
++ krait_l2_points = devm_kcalloc(dev, nr, sizeof(*krait_l2_points),
++ GFP_KERNEL);
++ if (!krait_l2_points)
++ return -ENOMEM;
++ nr_krait_l2_points = nr;
++
++ for (i = 0, val = prop->value; i < nr; i++) {
++ unsigned long cache_freq = be32_to_cpup(val++) * 1000;
++ unsigned int cache_volt = be32_to_cpup(val++);
++ unsigned long cpu_freq = be32_to_cpup(val++) * 1000;
++
++ krait_l2_points[i].cache_freq = cache_freq;
++ krait_l2_points[i].cache_volt = cache_volt;
++ krait_l2_points[i].cpu_freq = cpu_freq;
++ }
++
++ return 0;
++}
++
++static int krait_set_target(struct cpufreq_policy *policy, unsigned int index)
++{
++ struct dev_pm_opp *opp;
++ unsigned long volt = 0, volt_old = 0, tol = 0;
++ unsigned long freq, max_cpu_freq = 0;
++ unsigned int old_freq, new_freq;
++ long freq_Hz, freq_exact;
++ int ret, i;
++ struct clk *cpu_clk;
++ struct regulator *core;
++ unsigned int cpu;
++
++ cpu_clk = per_cpu(krait_cpu_clks, policy->cpu);
++
++ freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000);
++ if (freq_Hz <= 0)
++ freq_Hz = freq_table[index].frequency * 1000;
++
++ freq_exact = freq_Hz;
++ new_freq = freq_Hz / 1000;
++ old_freq = clk_get_rate(cpu_clk) / 1000;
++
++ core = per_cpu(krait_supply_core, policy->cpu);
++
++ rcu_read_lock();
++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz);
++ if (IS_ERR(opp)) {
++ rcu_read_unlock();
++ pr_err("failed to find OPP for %ld\n", freq_Hz);
++ return PTR_ERR(opp);
++ }
++ volt = dev_pm_opp_get_voltage(opp);
++ rcu_read_unlock();
++ tol = volt * voltage_tolerance / 100;
++ volt_old = regulator_get_voltage(core);
++
++ pr_debug("%u MHz, %ld mV --> %u MHz, %ld mV\n",
++ old_freq / 1000, volt_old ? volt_old / 1000 : -1,
++ new_freq / 1000, volt ? volt / 1000 : -1);
++
++ /* scaling up? scale voltage before frequency */
++ if (new_freq > old_freq) {
++ ret = regulator_set_voltage_tol(core, volt, tol);
++ if (ret) {
++ pr_err("failed to scale voltage up: %d\n", ret);
++ return ret;
++ }
++ }
++
++ ret = clk_set_rate(cpu_clk, freq_exact);
++ if (ret) {
++ pr_err("failed to set clock rate: %d\n", ret);
++ return ret;
++ }
++
++ /* scaling down? scale voltage after frequency */
++ if (new_freq < old_freq) {
++ ret = regulator_set_voltage_tol(core, volt, tol);
++ if (ret) {
++ pr_err("failed to scale voltage down: %d\n", ret);
++ clk_set_rate(cpu_clk, old_freq * 1000);
++ }
++ }
++
++ for_each_possible_cpu(cpu) {
++ freq = clk_get_rate(per_cpu(krait_cpu_clks, cpu));
++ max_cpu_freq = max(max_cpu_freq, freq);
++ }
++
++ for (i = 0; i < nr_krait_l2_points; i++) {
++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) {
++ if (krait_l2_reg) {
++ ret = regulator_set_voltage_tol(krait_l2_reg,
++ krait_l2_points[i].cache_volt,
++ tol);
++ if (ret) {
++ pr_err("failed to scale l2 voltage: %d\n",
++ ret);
++ }
++ }
++ ret = clk_set_rate(krait_l2_clk,
++ krait_l2_points[i].cache_freq);
++ if (ret)
++ pr_err("failed to scale l2 clk: %d\n", ret);
++ break;
++ }
++
++ }
++
++ return ret;
++}
++
++static int krait_cpufreq_init(struct cpufreq_policy *policy)
++{
++ int ret;
++
++ policy->clk = per_cpu(krait_cpu_clks, policy->cpu);
++
++ ret = cpufreq_table_validate_and_show(policy, freq_table);
++ if (ret) {
++ pr_err("%s: invalid frequency table: %d\n", __func__, ret);
++ return ret;
++ }
++
++ policy->cpuinfo.transition_latency = transition_latency;
++
++ return 0;
++}
++
++static struct cpufreq_driver krait_cpufreq_driver = {
++ .flags = CPUFREQ_STICKY,
++ .verify = cpufreq_generic_frequency_table_verify,
++ .target_index = krait_set_target,
++ .get = cpufreq_generic_get,
++ .init = krait_cpufreq_init,
++ .name = "generic_krait",
++ .attr = cpufreq_generic_attr,
++};
++
++static int krait_cpufreq_probe(struct platform_device *pdev)
++{
++ struct device_node *np, *cache;
++ int ret, i;
++ unsigned int cpu;
++ struct device *dev;
++ struct clk *clk;
++ struct regulator *core;
++ unsigned long freq_Hz, freq, max_cpu_freq = 0;
++ struct dev_pm_opp *opp;
++ unsigned long volt, tol;
++
++ cpu_dev = get_cpu_device(0);
++ if (!cpu_dev) {
++ pr_err("failed to get krait device\n");
++ return -ENODEV;
++ }
++
++ np = of_node_get(cpu_dev->of_node);
++ if (!np) {
++ pr_err("failed to find krait node\n");
++ return -ENOENT;
++ }
++
++ ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
++ if (ret) {
++ pr_err("failed to init cpufreq table: %d\n", ret);
++ goto out_put_node;
++ }
++
++ of_property_read_u32(np, "voltage-tolerance", &voltage_tolerance);
++
++ if (of_property_read_u32(np, "clock-latency", &transition_latency))
++ transition_latency = CPUFREQ_ETERNAL;
++
++ cache = of_find_next_cache_node(np);
++ if (cache) {
++ struct device_node *vdd;
++
++ vdd = of_parse_phandle(cache, "vdd_dig-supply", 0);
++ if (vdd) {
++ krait_l2_reg = regulator_get(NULL, vdd->name);
++ if (IS_ERR(krait_l2_reg)) {
++ pr_warn("failed to get l2 vdd_dig supply\n");
++ krait_l2_reg = NULL;
++ }
++ of_node_put(vdd);
++ }
++
++ krait_l2_clk = of_clk_get(cache, 0);
++ if (!IS_ERR(krait_l2_clk)) {
++ ret = krait_parse_cache_points(&pdev->dev, cache);
++ if (ret)
++ clk_put(krait_l2_clk);
++ }
++ if (IS_ERR(krait_l2_clk) || ret)
++ krait_l2_clk = NULL;
++ }
++
++ for_each_possible_cpu(cpu) {
++ dev = get_cpu_device(cpu);
++ if (!dev) {
++ pr_err("failed to get krait device\n");
++ ret = -ENOENT;
++ goto out_free_table;
++ }
++ per_cpu(krait_cpu_clks, cpu) = clk = devm_clk_get(dev, NULL);
++ if (IS_ERR(clk)) {
++ ret = PTR_ERR(clk);
++ goto out_free_table;
++ }
++ core = devm_regulator_get(dev, "core");
++ if (IS_ERR(core)) {
++ pr_debug("failed to get core regulator\n");
++ ret = PTR_ERR(core);
++ goto out_free_table;
++ }
++ per_cpu(krait_supply_core, cpu) = core;
++
++ freq = freq_Hz = clk_get_rate(clk);
++
++ rcu_read_lock();
++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz);
++ if (IS_ERR(opp)) {
++ rcu_read_unlock();
++ pr_err("failed to find OPP for %ld\n", freq_Hz);
++ ret = PTR_ERR(opp);
++ goto out_free_table;
++ }
++ volt = dev_pm_opp_get_voltage(opp);
++ rcu_read_unlock();
++
++ tol = volt * voltage_tolerance / 100;
++ ret = regulator_set_voltage_tol(core, volt, tol);
++ if (ret) {
++ pr_err("failed to scale voltage up: %d\n", ret);
++ goto out_free_table;
++ }
++ ret = regulator_enable(core);
++ if (ret) {
++ pr_err("failed to enable regulator: %d\n", ret);
++ goto out_free_table;
++ }
++ max_cpu_freq = max(max_cpu_freq, freq);
++ }
++
++ for (i = 0; i < nr_krait_l2_points; i++) {
++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) {
++ if (krait_l2_reg) {
++ ret = regulator_set_voltage_tol(krait_l2_reg,
++ krait_l2_points[i].cache_volt,
++ tol);
++ if (ret)
++ pr_err("failed to scale l2 voltage: %d\n",
++ ret);
++ ret = regulator_enable(krait_l2_reg);
++ if (ret)
++ pr_err("failed to enable l2 voltage: %d\n",
++ ret);
++ }
++ break;
++ }
++
++ }
++
++ ret = cpufreq_register_driver(&krait_cpufreq_driver);
++ if (ret) {
++ pr_err("failed register driver: %d\n", ret);
++ goto out_free_table;
++ }
++ of_node_put(np);
++
++ /*
++ * For now, just loading the cooling device;
++ * thermal DT code takes care of matching them.
++ */
++ for_each_possible_cpu(cpu) {
++ dev = get_cpu_device(cpu);
++ np = of_node_get(dev->of_node);
++ if (of_find_property(np, "#cooling-cells", NULL)) {
++ cdev = of_cpufreq_cooling_register(np, cpumask_of(cpu));
++ if (IS_ERR(cdev))
++ pr_err("running cpufreq without cooling device: %ld\n",
++ PTR_ERR(cdev));
++ }
++ of_node_put(np);
++ }
++
++ return 0;
++
++out_free_table:
++ regulator_put(krait_l2_reg);
++ clk_put(krait_l2_clk);
++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
++out_put_node:
++ of_node_put(np);
++ return ret;
++}
++
++static int krait_cpufreq_remove(struct platform_device *pdev)
++{
++ cpufreq_cooling_unregister(cdev);
++ cpufreq_unregister_driver(&krait_cpufreq_driver);
++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
++ clk_put(krait_l2_clk);
++ regulator_put(krait_l2_reg);
++
++ return 0;
++}
++
++static struct platform_driver krait_cpufreq_platdrv = {
++ .driver = {
++ .name = "cpufreq-krait",
++ .owner = THIS_MODULE,
++ },
++ .probe = krait_cpufreq_probe,
++ .remove = krait_cpufreq_remove,
++};
++module_platform_driver(krait_cpufreq_platdrv);
++
++MODULE_DESCRIPTION("Krait CPUfreq driver");
++MODULE_LICENSE("GPL v2");
+--- a/drivers/cpufreq/qcom-cpufreq.c
++++ b/drivers/cpufreq/qcom-cpufreq.c
+@@ -168,11 +168,8 @@ static int __init qcom_cpufreq_populate_
+
+ static int __init qcom_cpufreq_driver_init(void)
+ {
+- struct cpufreq_dt_platform_data pdata = { .independent_clocks = true };
+ struct platform_device_info devinfo = {
+- .name = "cpufreq-dt",
+- .data = &pdata,
+- .size_data = sizeof(pdata),
++ .name = "cpufreq-krait",
+ };
+ struct device *cpu_dev;
+ struct device_node *np;
--- /dev/null
+From d2f4f99db3e9ec8b063cf2e45704e2bb95428317 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Mon, 17 Nov 2014 14:41:58 +0100
+Subject: [PATCH] dmaengine: Rework dma_chan_get
+
+dma_chan_get uses a rather interesting error handling and code path.
+
+Change it to something more usual in the kernel.
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Vinod Koul <vinod.koul@intel.com>
+---
+ drivers/dma/dmaengine.c | 36 +++++++++++++++++++-----------------
+ 1 file changed, 19 insertions(+), 17 deletions(-)
+
+--- a/drivers/dma/dmaengine.c
++++ b/drivers/dma/dmaengine.c
+@@ -222,31 +222,33 @@ static void balance_ref_count(struct dma
+ */
+ static int dma_chan_get(struct dma_chan *chan)
+ {
+- int err = -ENODEV;
+ struct module *owner = dma_chan_to_owner(chan);
++ int ret;
+
++ /* The channel is already in use, update client count */
+ if (chan->client_count) {
+ __module_get(owner);
+- err = 0;
+- } else if (try_module_get(owner))
+- err = 0;
++ goto out;
++ }
+
+- if (err == 0)
+- chan->client_count++;
++ if (!try_module_get(owner))
++ return -ENODEV;
+
+ /* allocate upon first client reference */
+- if (chan->client_count == 1 && err == 0) {
+- int desc_cnt = chan->device->device_alloc_chan_resources(chan);
+-
+- if (desc_cnt < 0) {
+- err = desc_cnt;
+- chan->client_count = 0;
+- module_put(owner);
+- } else if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
+- balance_ref_count(chan);
+- }
+-
+- return err;
++ ret = chan->device->device_alloc_chan_resources(chan);
++ if (ret < 0)
++ goto err_out;
++
++ if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
++ balance_ref_count(chan);
++
++out:
++ chan->client_count++;
++ return 0;
++
++err_out:
++ module_put(owner);
++ return ret;
+ }
+
+ /**
--- /dev/null
+From 4f8ef9f4140cc286d7d1cf9237da7a7439e4fc0b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Mon, 17 Nov 2014 14:42:03 +0100
+Subject: [PATCH] dmaengine: Remove the need to declare device_control
+
+In order to migrate the drivers without triggering a BUG_ON for the converted
+drivers, which would cause bisectability issues, we need to remove that check
+before removing the device_control function entirely.
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Vinod Koul <vinod.koul@intel.com>
+---
+ drivers/dma/dmaengine.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/dma/dmaengine.c
++++ b/drivers/dma/dmaengine.c
+@@ -814,8 +814,6 @@ int dma_async_device_register(struct dma
+ !device->device_prep_dma_sg);
+ BUG_ON(dma_has_cap(DMA_CYCLIC, device->cap_mask) &&
+ !device->device_prep_dma_cyclic);
+- BUG_ON(dma_has_cap(DMA_SLAVE, device->cap_mask) &&
+- !device->device_control);
+ BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
+ !device->device_prep_interleaved_dma);
+
--- /dev/null
+From c4b54a648e682f678c338619df848233a6babc46 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Mon, 17 Nov 2014 14:41:59 +0100
+Subject: [PATCH] dmaengine: Make channel allocation callbacks optional
+
+Nowadays, some drivers don't have anything in there channel allocation
+callbacks anymore.
+
+Remove the BUG_ON if those callbacks aren't implemented, in order to allow
+drivers to not implement them.
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Vinod Koul <vinod.koul@intel.com>
+---
+ drivers/dma/dmaengine.c | 18 +++++++++++-------
+ 1 file changed, 11 insertions(+), 7 deletions(-)
+
+--- a/drivers/dma/dmaengine.c
++++ b/drivers/dma/dmaengine.c
+@@ -235,9 +235,11 @@ static int dma_chan_get(struct dma_chan
+ return -ENODEV;
+
+ /* allocate upon first client reference */
+- ret = chan->device->device_alloc_chan_resources(chan);
+- if (ret < 0)
+- goto err_out;
++ if (chan->device->device_alloc_chan_resources) {
++ ret = chan->device->device_alloc_chan_resources(chan);
++ if (ret < 0)
++ goto err_out;
++ }
+
+ if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
+ balance_ref_count(chan);
+@@ -259,11 +261,15 @@ err_out:
+ */
+ static void dma_chan_put(struct dma_chan *chan)
+ {
++ /* This channel is not in use, bail out */
+ if (!chan->client_count)
+- return; /* this channel failed alloc_chan_resources */
++ return;
++
+ chan->client_count--;
+ module_put(dma_chan_to_owner(chan));
+- if (chan->client_count == 0)
++
++ /* This channel is not in use anymore, free it */
++ if (!chan->client_count && chan->device->device_free_chan_resources)
+ chan->device->device_free_chan_resources(chan);
+ }
+
+@@ -817,8 +823,6 @@ int dma_async_device_register(struct dma
+ BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
+ !device->device_prep_interleaved_dma);
+
+- BUG_ON(!device->device_alloc_chan_resources);
+- BUG_ON(!device->device_free_chan_resources);
+ BUG_ON(!device->device_tx_status);
+ BUG_ON(!device->device_issue_pending);
+ BUG_ON(!device->dev);
--- /dev/null
+From 94a73e30dfe6722e9f4ef19f7892901d7d00eab1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Mon, 17 Nov 2014 14:42:00 +0100
+Subject: [PATCH] dmaengine: Introduce a device_config callback
+
+The fact that the channel configuration is done in device_control is rather
+misleading, since it's not really advertised as such, plus, the fact that the
+framework exposes a function of its own makes it not really intuitive, while
+we're losing the type checking whenever we pass that unsigned long argument.
+
+Add a device_config callback to dma_device, with a fallback on the old
+behaviour for now for existing drivers to opt in.
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Vinod Koul <vinod.koul@intel.com>
+---
+ include/linux/dmaengine.h | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/include/linux/dmaengine.h
++++ b/include/linux/dmaengine.h
+@@ -607,6 +607,8 @@ struct dma_tx_state {
+ * The function takes a buffer of size buf_len. The callback function will
+ * be called after period_len bytes have been transferred.
+ * @device_prep_interleaved_dma: Transfer expression in a generic way.
++ * @device_config: Pushes a new configuration to a channel, return 0 or an error
++ * code
+ * @device_control: manipulate all pending operations on a channel, returns
+ * zero or error code
+ * @device_tx_status: poll for transaction completion, the optional
+@@ -673,6 +675,9 @@ struct dma_device {
+ struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
+ struct dma_chan *chan, struct dma_interleaved_template *xt,
+ unsigned long flags);
++
++ int (*device_config)(struct dma_chan *chan,
++ struct dma_slave_config *config);
+ int (*device_control)(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+ unsigned long arg);
+
+@@ -696,6 +701,9 @@ static inline int dmaengine_device_contr
+ static inline int dmaengine_slave_config(struct dma_chan *chan,
+ struct dma_slave_config *config)
+ {
++ if (chan->device->device_config)
++ return chan->device->device_config(chan, config);
++
+ return dmaengine_device_control(chan, DMA_SLAVE_CONFIG,
+ (unsigned long)config);
+ }
--- /dev/null
+From 7fa0cf462daa6f6121b332b87833d7f5bdb515c0 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Mon, 17 Nov 2014 14:42:02 +0100
+Subject: [PATCH] dmaengine: Add device_terminate_all callback
+
+Split out the terminate_all command from device_control to a dma_device
+callback. In order to preserve backward capability, still rely on
+device_control if no such callback has been implemented.
+
+Eventually, this will allow to create a generic dma_slave_caps callback.
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Vinod Koul <vinod.koul@intel.com>
+---
+ include/linux/dmaengine.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/include/linux/dmaengine.h
++++ b/include/linux/dmaengine.h
+@@ -611,6 +611,8 @@ struct dma_tx_state {
+ * code
+ * @device_control: manipulate all pending operations on a channel, returns
+ * zero or error code
++ * @device_terminate_all: Aborts all transfers on a channel. Returns 0
++ * or an error code
+ * @device_tx_status: poll for transaction completion, the optional
+ * txstate parameter can be supplied with a pointer to get a
+ * struct with auxiliary transfer status information, otherwise the call
+@@ -680,6 +682,7 @@ struct dma_device {
+ struct dma_slave_config *config);
+ int (*device_control)(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+ unsigned long arg);
++ int (*device_terminate_all)(struct dma_chan *chan);
+
+ enum dma_status (*device_tx_status)(struct dma_chan *chan,
+ dma_cookie_t cookie,
+@@ -789,6 +792,9 @@ static inline int dma_get_slave_caps(str
+
+ static inline int dmaengine_terminate_all(struct dma_chan *chan)
+ {
++ if (chan->device->device_terminate_all)
++ return chan->device->device_terminate_all(chan);
++
+ return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);
+ }
+
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v6,1/2] dt/bindings: qcom_adm: Fix channel specifiers
+From: Andy Gross <agross@codeaurora.org>
+X-Patchwork-Id: 6027361
+Message-Id: <1426571172-9711-2-git-send-email-agross@codeaurora.org>
+To: Vinod Koul <vinod.koul@intel.com>
+Cc: devicetree@vger.kernel.org, dmaengine@vger.kernel.org,
+ linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, Kumar Gala <galak@codeaurora.org>,
+ Bjorn Andersson <bjorn.andersson@sonymobile.com>,
+ Andy Gross <agross@codeaurora.org>
+Date: Tue, 17 Mar 2015 00:46:11 -0500
+
+This patch removes the crci information from the dma channel property. At least
+one client device requires using more than one CRCI value for a channel. This
+does not match the current binding and the crci information needs to be removed.
+
+Instead, the client device will provide this information via other means.
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+
+---
+Documentation/devicetree/bindings/dma/qcom_adm.txt | 16 ++++++----------
+ 1 file changed, 6 insertions(+), 10 deletions(-)
+
+--- a/Documentation/devicetree/bindings/dma/qcom_adm.txt
++++ b/Documentation/devicetree/bindings/dma/qcom_adm.txt
+@@ -4,8 +4,7 @@ Required properties:
+ - compatible: must contain "qcom,adm" for IPQ/APQ8064 and MSM8960
+ - reg: Address range for DMA registers
+ - interrupts: Should contain one interrupt shared by all channels
+-- #dma-cells: must be <2>. First cell denotes the channel number. Second cell
+- denotes CRCI (client rate control interface) flow control assignment.
++- #dma-cells: must be <1>. First cell denotes the channel number.
+ - clocks: Should contain the core clock and interface clock.
+ - clock-names: Must contain "core" for the core clock and "iface" for the
+ interface clock.
+@@ -22,7 +21,7 @@ Example:
+ compatible = "qcom,adm";
+ reg = <0x18300000 0x100000>;
+ interrupts = <0 170 0>;
+- #dma-cells = <2>;
++ #dma-cells = <1>;
+
+ clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
+ clock-names = "core", "iface";
+@@ -35,15 +34,12 @@ Example:
+ qcom,ee = <0>;
+ };
+
+-DMA clients must use the format descripted in the dma.txt file, using a three
++DMA clients must use the format descripted in the dma.txt file, using a two
+ cell specifier for each channel.
+
+-Each dmas request consists of 3 cells:
++Each dmas request consists of two cells:
+ 1. phandle pointing to the DMA controller
+ 2. channel number
+- 3. CRCI assignment, if applicable. If no CRCI flow control is required, use 0.
+- The CRCI is used for flow control. It identifies the peripheral device that
+- is the source/destination for the transferred data.
+
+ Example:
+
+@@ -56,7 +52,7 @@ Example:
+
+ cs-gpios = <&qcom_pinmux 20 0>;
+
+- dmas = <&adm_dma 6 9>,
+- <&adm_dma 5 10>;
++ dmas = <&adm_dma 6>,
++ <&adm_dma 5>;
+ dma-names = "rx", "tx";
+ };
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v6,2/2] dmaengine: Add ADM driver
+From: Andy Gross <agross@codeaurora.org>
+X-Patchwork-Id: 6027351
+Message-Id: <1426571172-9711-3-git-send-email-agross@codeaurora.org>
+To: Vinod Koul <vinod.koul@intel.com>
+Cc: devicetree@vger.kernel.org, dmaengine@vger.kernel.org,
+ linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ linux-arm-kernel@lists.infradead.org, Kumar Gala <galak@codeaurora.org>,
+ Bjorn Andersson <bjorn.andersson@sonymobile.com>,
+ Andy Gross <agross@codeaurora.org>
+Date: Tue, 17 Mar 2015 00:46:12 -0500
+
+Add the DMA engine driver for the QCOM Application Data Mover (ADM) DMA
+controller found in the MSM8x60 and IPQ/APQ8064 platforms.
+
+The ADM supports both memory to memory transactions and memory
+to/from peripheral device transactions. The controller also provides flow
+control capabilities for transactions to/from peripheral devices.
+
+The initial release of this driver supports slave transfers to/from peripherals
+and also incorporates CRCI (client rate control interface) flow control.
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+Reviewed-by: sricharan <sricharan@codeaurora.org>
+
+---
+drivers/dma/Kconfig | 10 +
+ drivers/dma/Makefile | 1 +
+ drivers/dma/qcom_adm.c | 900 ++++++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 911 insertions(+)
+ create mode 100644 drivers/dma/qcom_adm.c
+
+--- a/drivers/dma/Kconfig
++++ b/drivers/dma/Kconfig
+@@ -457,4 +457,14 @@ config QCOM_BAM_DMA
+ Enable support for the QCOM BAM DMA controller. This controller
+ provides DMA capabilities for a variety of on-chip devices.
+
++config QCOM_ADM
++ tristate "Qualcomm ADM support"
++ depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
++ select DMA_ENGINE
++ select DMA_VIRTUAL_CHANNELS
++ ---help---
++ Enable support for the Qualcomm ADM DMA controller. This controller
++ provides DMA capabilities for both general purpose and on-chip
++ peripheral devices.
++
+ endif
+--- /dev/null
++++ b/drivers/dma/qcom_adm.c
+@@ -0,0 +1,896 @@
++/*
++ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/kernel.h>
++#include <linux/io.h>
++#include <linux/init.h>
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/interrupt.h>
++#include <linux/dma-mapping.h>
++#include <linux/scatterlist.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/of.h>
++#include <linux/of_address.h>
++#include <linux/of_irq.h>
++#include <linux/of_dma.h>
++#include <linux/reset.h>
++#include <linux/clk.h>
++#include <linux/dmaengine.h>
++
++#include "dmaengine.h"
++#include "virt-dma.h"
++
++/* ADM registers - calculated from channel number and security domain */
++#define ADM_CHAN_MULTI 0x4
++#define ADM_CI_MULTI 0x4
++#define ADM_CRCI_MULTI 0x4
++#define ADM_EE_MULTI 0x800
++#define ADM_CHAN_OFFS(chan) (ADM_CHAN_MULTI * chan)
++#define ADM_EE_OFFS(ee) (ADM_EE_MULTI * ee)
++#define ADM_CHAN_EE_OFFS(chan, ee) (ADM_CHAN_OFFS(chan) + ADM_EE_OFFS(ee))
++#define ADM_CHAN_OFFS(chan) (ADM_CHAN_MULTI * chan)
++#define ADM_CI_OFFS(ci) (ADM_CHAN_OFF(ci))
++#define ADM_CH_CMD_PTR(chan, ee) (ADM_CHAN_EE_OFFS(chan, ee))
++#define ADM_CH_RSLT(chan, ee) (0x40 + ADM_CHAN_EE_OFFS(chan, ee))
++#define ADM_CH_FLUSH_STATE0(chan, ee) (0x80 + ADM_CHAN_EE_OFFS(chan, ee))
++#define ADM_CH_STATUS_SD(chan, ee) (0x200 + ADM_CHAN_EE_OFFS(chan, ee))
++#define ADM_CH_CONF(chan) (0x240 + ADM_CHAN_OFFS(chan))
++#define ADM_CH_RSLT_CONF(chan, ee) (0x300 + ADM_CHAN_EE_OFFS(chan, ee))
++#define ADM_SEC_DOMAIN_IRQ_STATUS(ee) (0x380 + ADM_EE_OFFS(ee))
++#define ADM_CI_CONF(ci) (0x390 + ci * ADM_CI_MULTI)
++#define ADM_GP_CTL 0x3d8
++#define ADM_CRCI_CTL(crci, ee) (0x400 + crci * ADM_CRCI_MULTI + \
++ ADM_EE_OFFS(ee))
++
++/* channel status */
++#define ADM_CH_STATUS_VALID BIT(1)
++
++/* channel result */
++#define ADM_CH_RSLT_VALID BIT(31)
++#define ADM_CH_RSLT_ERR BIT(3)
++#define ADM_CH_RSLT_FLUSH BIT(2)
++#define ADM_CH_RSLT_TPD BIT(1)
++
++/* channel conf */
++#define ADM_CH_CONF_SHADOW_EN BIT(12)
++#define ADM_CH_CONF_MPU_DISABLE BIT(11)
++#define ADM_CH_CONF_PERM_MPU_CONF BIT(9)
++#define ADM_CH_CONF_FORCE_RSLT_EN BIT(7)
++#define ADM_CH_CONF_SEC_DOMAIN(ee) (((ee & 0x3) << 4) | ((ee & 0x4) << 11))
++
++/* channel result conf */
++#define ADM_CH_RSLT_CONF_FLUSH_EN BIT(1)
++#define ADM_CH_RSLT_CONF_IRQ_EN BIT(0)
++
++/* CRCI CTL */
++#define ADM_CRCI_CTL_MUX_SEL BIT(18)
++#define ADM_CRCI_CTL_RST BIT(17)
++
++/* CI configuration */
++#define ADM_CI_RANGE_END(x) (x << 24)
++#define ADM_CI_RANGE_START(x) (x << 16)
++#define ADM_CI_BURST_4_WORDS BIT(2)
++#define ADM_CI_BURST_8_WORDS BIT(3)
++
++/* GP CTL */
++#define ADM_GP_CTL_LP_EN BIT(12)
++#define ADM_GP_CTL_LP_CNT(x) (x << 8)
++
++/* Command pointer list entry */
++#define ADM_CPLE_LP BIT(31)
++#define ADM_CPLE_CMD_PTR_LIST BIT(29)
++
++/* Command list entry */
++#define ADM_CMD_LC BIT(31)
++#define ADM_CMD_DST_CRCI(n) (((n) & 0xf) << 7)
++#define ADM_CMD_SRC_CRCI(n) (((n) & 0xf) << 3)
++
++#define ADM_CMD_TYPE_SINGLE 0x0
++#define ADM_CMD_TYPE_BOX 0x3
++
++#define ADM_CRCI_MUX_SEL BIT(4)
++#define ADM_DESC_ALIGN 8
++#define ADM_MAX_XFER (SZ_64K-1)
++#define ADM_MAX_ROWS (SZ_64K-1)
++#define ADM_MAX_CHANNELS 16
++
++struct adm_desc_hw_box {
++ u32 cmd;
++ u32 src_addr;
++ u32 dst_addr;
++ u32 row_len;
++ u32 num_rows;
++ u32 row_offset;
++};
++
++struct adm_desc_hw_single {
++ u32 cmd;
++ u32 src_addr;
++ u32 dst_addr;
++ u32 len;
++};
++
++struct adm_async_desc {
++ struct virt_dma_desc vd;
++ struct adm_device *adev;
++
++ size_t length;
++ enum dma_transfer_direction dir;
++ dma_addr_t dma_addr;
++ size_t dma_len;
++
++ void *cpl;
++ dma_addr_t cp_addr;
++ u32 crci;
++ u32 mux;
++ u32 blk_size;
++};
++
++struct adm_chan {
++ struct virt_dma_chan vc;
++ struct adm_device *adev;
++
++ /* parsed from DT */
++ u32 id; /* channel id */
++
++ struct adm_async_desc *curr_txd;
++ struct dma_slave_config slave;
++ struct list_head node;
++
++ int error;
++ int initialized;
++};
++
++static inline struct adm_chan *to_adm_chan(struct dma_chan *common)
++{
++ return container_of(common, struct adm_chan, vc.chan);
++}
++
++struct adm_device {
++ void __iomem *regs;
++ struct device *dev;
++ struct dma_device common;
++ struct device_dma_parameters dma_parms;
++ struct adm_chan *channels;
++
++ u32 ee;
++
++ struct clk *core_clk;
++ struct clk *iface_clk;
++
++ struct reset_control *clk_reset;
++ struct reset_control *c0_reset;
++ struct reset_control *c1_reset;
++ struct reset_control *c2_reset;
++ int irq;
++};
++
++/**
++ * adm_free_chan - Frees dma resources associated with the specific channel
++ *
++ * Free all allocated descriptors associated with this channel
++ *
++ */
++static void adm_free_chan(struct dma_chan *chan)
++{
++ /* free all queued descriptors */
++ vchan_free_chan_resources(to_virt_chan(chan));
++}
++
++/**
++ * adm_get_blksize - Get block size from burst value
++ *
++ */
++static int adm_get_blksize(unsigned int burst)
++{
++ int ret;
++
++ switch (burst) {
++ case 16:
++ case 32:
++ case 64:
++ case 128:
++ ret = ffs(burst>>4) - 1;
++ break;
++ case 192:
++ ret = 4;
++ break;
++ case 256:
++ ret = 5;
++ break;
++ default:
++ ret = -EINVAL;
++ break;
++ }
++
++ return ret;
++}
++
++/**
++ * adm_process_fc_descriptors - Process descriptors for flow controlled xfers
++ *
++ * @achan: ADM channel
++ * @desc: Descriptor memory pointer
++ * @sg: Scatterlist entry
++ * @crci: CRCI value
++ * @burst: Burst size of transaction
++ * @direction: DMA transfer direction
++ */
++static void *adm_process_fc_descriptors(struct adm_chan *achan,
++ void *desc, struct scatterlist *sg, u32 crci, u32 burst,
++ enum dma_transfer_direction direction)
++{
++ struct adm_desc_hw_box *box_desc = NULL;
++ struct adm_desc_hw_single *single_desc;
++ u32 remainder = sg_dma_len(sg);
++ u32 rows, row_offset, crci_cmd;
++ u32 mem_addr = sg_dma_address(sg);
++ u32 *incr_addr = &mem_addr;
++ u32 *src, *dst;
++
++ if (direction == DMA_DEV_TO_MEM) {
++ crci_cmd = ADM_CMD_SRC_CRCI(crci);
++ row_offset = burst;
++ src = &achan->slave.src_addr;
++ dst = &mem_addr;
++ } else {
++ crci_cmd = ADM_CMD_DST_CRCI(crci);
++ row_offset = burst << 16;
++ src = &mem_addr;
++ dst = &achan->slave.dst_addr;
++ }
++
++ while (remainder >= burst) {
++ box_desc = desc;
++ box_desc->cmd = ADM_CMD_TYPE_BOX | crci_cmd;
++ box_desc->row_offset = row_offset;
++ box_desc->src_addr = *src;
++ box_desc->dst_addr = *dst;
++
++ rows = remainder / burst;
++ rows = min_t(u32, rows, ADM_MAX_ROWS);
++ box_desc->num_rows = rows << 16 | rows;
++ box_desc->row_len = burst << 16 | burst;
++
++ *incr_addr += burst * rows;
++ remainder -= burst * rows;
++ desc += sizeof(*box_desc);
++ }
++
++ /* if leftover bytes, do one single descriptor */
++ if (remainder) {
++ single_desc = desc;
++ single_desc->cmd = ADM_CMD_TYPE_SINGLE | crci_cmd;
++ single_desc->len = remainder;
++ single_desc->src_addr = *src;
++ single_desc->dst_addr = *dst;
++ desc += sizeof(*single_desc);
++
++ if (sg_is_last(sg))
++ single_desc->cmd |= ADM_CMD_LC;
++ } else {
++ if (box_desc && sg_is_last(sg))
++ box_desc->cmd |= ADM_CMD_LC;
++ }
++
++ return desc;
++}
++
++/**
++ * adm_process_non_fc_descriptors - Process descriptors for non-fc xfers
++ *
++ * @achan: ADM channel
++ * @desc: Descriptor memory pointer
++ * @sg: Scatterlist entry
++ * @direction: DMA transfer direction
++ */
++static void *adm_process_non_fc_descriptors(struct adm_chan *achan,
++ void *desc, struct scatterlist *sg,
++ enum dma_transfer_direction direction)
++{
++ struct adm_desc_hw_single *single_desc;
++ u32 remainder = sg_dma_len(sg);
++ u32 mem_addr = sg_dma_address(sg);
++ u32 *incr_addr = &mem_addr;
++ u32 *src, *dst;
++
++ if (direction == DMA_DEV_TO_MEM) {
++ src = &achan->slave.src_addr;
++ dst = &mem_addr;
++ } else {
++ src = &mem_addr;
++ dst = &achan->slave.dst_addr;
++ }
++
++ do {
++ single_desc = desc;
++ single_desc->cmd = ADM_CMD_TYPE_SINGLE;
++ single_desc->src_addr = *src;
++ single_desc->dst_addr = *dst;
++ single_desc->len = (remainder > ADM_MAX_XFER) ?
++ ADM_MAX_XFER : remainder;
++
++ remainder -= single_desc->len;
++ *incr_addr += single_desc->len;
++ desc += sizeof(*single_desc);
++ } while (remainder);
++
++ /* set last command if this is the end of the whole transaction */
++ if (sg_is_last(sg))
++ single_desc->cmd |= ADM_CMD_LC;
++
++ return desc;
++}
++
++/**
++ * adm_prep_slave_sg - Prep slave sg transaction
++ *
++ * @chan: dma channel
++ * @sgl: scatter gather list
++ * @sg_len: length of sg
++ * @direction: DMA transfer direction
++ * @flags: DMA flags
++ * @context: transfer context (unused)
++ */
++static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
++ struct scatterlist *sgl, unsigned int sg_len,
++ enum dma_transfer_direction direction, unsigned long flags,
++ void *context)
++{
++ struct adm_chan *achan = to_adm_chan(chan);
++ struct adm_device *adev = achan->adev;
++ struct adm_async_desc *async_desc;
++ struct scatterlist *sg;
++ u32 i, burst;
++ u32 single_count = 0, box_count = 0, crci = 0;
++ void *desc;
++ u32 *cple;
++ int blk_size = 0;
++
++ if (!is_slave_direction(direction)) {
++ dev_err(adev->dev, "invalid dma direction\n");
++ return NULL;
++ }
++
++ /*
++ * get burst value from slave configuration
++ */
++ burst = (direction == DMA_MEM_TO_DEV) ?
++ achan->slave.dst_maxburst :
++ achan->slave.src_maxburst;
++
++ /* if using flow control, validate burst and crci values */
++ if (achan->slave.device_fc) {
++
++ blk_size = adm_get_blksize(burst);
++ if (blk_size < 0) {
++ dev_err(adev->dev, "invalid burst value: %d\n",
++ burst);
++ return ERR_PTR(-EINVAL);
++ }
++
++ crci = achan->slave.slave_id & 0xf;
++ if (!crci || achan->slave.slave_id > 0x1f) {
++ dev_err(adev->dev, "invalid crci value\n");
++ return ERR_PTR(-EINVAL);
++ }
++ }
++
++ /* iterate through sgs and compute allocation size of structures */
++ for_each_sg(sgl, sg, sg_len, i) {
++ if (achan->slave.device_fc) {
++ box_count += DIV_ROUND_UP(sg_dma_len(sg) / burst,
++ ADM_MAX_ROWS);
++ if (sg_dma_len(sg) % burst)
++ single_count++;
++ } else {
++ single_count += DIV_ROUND_UP(sg_dma_len(sg),
++ ADM_MAX_XFER);
++ }
++ }
++
++ async_desc = kzalloc(sizeof(*async_desc), GFP_NOWAIT);
++ if (!async_desc)
++ return ERR_PTR(-ENOMEM);
++
++ if (crci)
++ async_desc->mux = achan->slave.slave_id & ADM_CRCI_MUX_SEL ?
++ ADM_CRCI_CTL_MUX_SEL : 0;
++ async_desc->crci = crci;
++ async_desc->blk_size = blk_size;
++ async_desc->dma_len = single_count * sizeof(struct adm_desc_hw_single) +
++ box_count * sizeof(struct adm_desc_hw_box) +
++ sizeof(*cple) + 2 * ADM_DESC_ALIGN;
++
++ async_desc->cpl = dma_alloc_writecombine(adev->dev, async_desc->dma_len,
++ &async_desc->dma_addr, GFP_NOWAIT);
++
++ if (!async_desc->cpl) {
++ kfree(async_desc);
++ return ERR_PTR(-ENOMEM);
++ }
++
++ async_desc->adev = adev;
++
++ /* both command list entry and descriptors must be 8 byte aligned */
++ cple = PTR_ALIGN(async_desc->cpl, ADM_DESC_ALIGN);
++ desc = PTR_ALIGN(cple + 1, ADM_DESC_ALIGN);
++
++ /* init cmd list */
++ *cple = ADM_CPLE_LP;
++ *cple |= (desc - async_desc->cpl + async_desc->dma_addr) >> 3;
++
++ for_each_sg(sgl, sg, sg_len, i) {
++ async_desc->length += sg_dma_len(sg);
++
++ if (achan->slave.device_fc)
++ desc = adm_process_fc_descriptors(achan, desc, sg, crci,
++ burst, direction);
++ else
++ desc = adm_process_non_fc_descriptors(achan, desc, sg,
++ direction);
++ }
++
++ return vchan_tx_prep(&achan->vc, &async_desc->vd, flags);
++}
++
++/**
++ * adm_terminate_all - terminate all transactions on a channel
++ * @achan: adm dma channel
++ *
++ * Dequeues and frees all transactions, aborts current transaction
++ * No callbacks are done
++ *
++ */
++static int adm_terminate_all(struct dma_chan *chan)
++{
++ struct adm_chan *achan = to_adm_chan(chan);
++ struct adm_device *adev = achan->adev;
++ unsigned long flags;
++ LIST_HEAD(head);
++
++ spin_lock_irqsave(&achan->vc.lock, flags);
++ vchan_get_all_descriptors(&achan->vc, &head);
++
++ /* send flush command to terminate current transaction */
++ writel_relaxed(0x0,
++ adev->regs + ADM_CH_FLUSH_STATE0(achan->id, adev->ee));
++
++ spin_unlock_irqrestore(&achan->vc.lock, flags);
++
++ vchan_dma_desc_free_list(&achan->vc, &head);
++
++ return 0;
++}
++
++static int adm_slave_config(struct dma_chan *chan, struct dma_slave_config *cfg)
++{
++ struct adm_chan *achan = to_adm_chan(chan);
++ unsigned long flag;
++
++ spin_lock_irqsave(&achan->vc.lock, flag);
++ memcpy(&achan->slave, cfg, sizeof(struct dma_slave_config));
++ spin_unlock_irqrestore(&achan->vc.lock, flag);
++
++ return 0;
++}
++
++/**
++ * adm_start_dma - start next transaction
++ * @achan - ADM dma channel
++ */
++static void adm_start_dma(struct adm_chan *achan)
++{
++ struct virt_dma_desc *vd = vchan_next_desc(&achan->vc);
++ struct adm_device *adev = achan->adev;
++ struct adm_async_desc *async_desc;
++
++ lockdep_assert_held(&achan->vc.lock);
++
++ if (!vd)
++ return;
++
++ list_del(&vd->node);
++
++ /* write next command list out to the CMD FIFO */
++ async_desc = container_of(vd, struct adm_async_desc, vd);
++ achan->curr_txd = async_desc;
++
++ /* reset channel error */
++ achan->error = 0;
++
++ if (!achan->initialized) {
++ /* enable interrupts */
++ writel(ADM_CH_CONF_SHADOW_EN |
++ ADM_CH_CONF_PERM_MPU_CONF |
++ ADM_CH_CONF_MPU_DISABLE |
++ ADM_CH_CONF_SEC_DOMAIN(adev->ee),
++ adev->regs + ADM_CH_CONF(achan->id));
++
++ writel(ADM_CH_RSLT_CONF_IRQ_EN | ADM_CH_RSLT_CONF_FLUSH_EN,
++ adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
++
++ achan->initialized = 1;
++ }
++
++ /* set the crci block size if this transaction requires CRCI */
++ if (async_desc->crci) {
++ writel(async_desc->mux | async_desc->blk_size,
++ adev->regs + ADM_CRCI_CTL(async_desc->crci, adev->ee));
++ }
++
++ /* make sure IRQ enable doesn't get reordered */
++ wmb();
++
++ /* write next command list out to the CMD FIFO */
++ writel(ALIGN(async_desc->dma_addr, ADM_DESC_ALIGN) >> 3,
++ adev->regs + ADM_CH_CMD_PTR(achan->id, adev->ee));
++}
++
++/**
++ * adm_dma_irq - irq handler for ADM controller
++ * @irq: IRQ of interrupt
++ * @data: callback data
++ *
++ * IRQ handler for the bam controller
++ */
++static irqreturn_t adm_dma_irq(int irq, void *data)
++{
++ struct adm_device *adev = data;
++ u32 srcs, i;
++ struct adm_async_desc *async_desc;
++ unsigned long flags;
++
++ srcs = readl_relaxed(adev->regs +
++ ADM_SEC_DOMAIN_IRQ_STATUS(adev->ee));
++
++ for (i = 0; i < ADM_MAX_CHANNELS; i++) {
++ struct adm_chan *achan = &adev->channels[i];
++ u32 status, result;
++
++ if (srcs & BIT(i)) {
++ status = readl_relaxed(adev->regs +
++ ADM_CH_STATUS_SD(i, adev->ee));
++
++ /* if no result present, skip */
++ if (!(status & ADM_CH_STATUS_VALID))
++ continue;
++
++ result = readl_relaxed(adev->regs +
++ ADM_CH_RSLT(i, adev->ee));
++
++ /* no valid results, skip */
++ if (!(result & ADM_CH_RSLT_VALID))
++ continue;
++
++ /* flag error if transaction was flushed or failed */
++ if (result & (ADM_CH_RSLT_ERR | ADM_CH_RSLT_FLUSH))
++ achan->error = 1;
++
++ spin_lock_irqsave(&achan->vc.lock, flags);
++ async_desc = achan->curr_txd;
++
++ achan->curr_txd = NULL;
++
++ if (async_desc) {
++ vchan_cookie_complete(&async_desc->vd);
++
++ /* kick off next DMA */
++ adm_start_dma(achan);
++ }
++
++ spin_unlock_irqrestore(&achan->vc.lock, flags);
++ }
++ }
++
++ return IRQ_HANDLED;
++}
++
++/**
++ * adm_tx_status - returns status of transaction
++ * @chan: dma channel
++ * @cookie: transaction cookie
++ * @txstate: DMA transaction state
++ *
++ * Return status of dma transaction
++ */
++static enum dma_status adm_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
++ struct dma_tx_state *txstate)
++{
++ struct adm_chan *achan = to_adm_chan(chan);
++ struct virt_dma_desc *vd;
++ enum dma_status ret;
++ unsigned long flags;
++ size_t residue = 0;
++
++ ret = dma_cookie_status(chan, cookie, txstate);
++ if (ret == DMA_COMPLETE || !txstate)
++ return ret;
++
++ spin_lock_irqsave(&achan->vc.lock, flags);
++
++ vd = vchan_find_desc(&achan->vc, cookie);
++ if (vd)
++ residue = container_of(vd, struct adm_async_desc, vd)->length;
++
++ spin_unlock_irqrestore(&achan->vc.lock, flags);
++
++ /*
++ * residue is either the full length if it is in the issued list, or 0
++ * if it is in progress. We have no reliable way of determining
++ * anything inbetween
++ */
++ dma_set_residue(txstate, residue);
++
++ if (achan->error)
++ return DMA_ERROR;
++
++ return ret;
++}
++
++/**
++ * adm_issue_pending - starts pending transactions
++ * @chan: dma channel
++ *
++ * Issues all pending transactions and starts DMA
++ */
++static void adm_issue_pending(struct dma_chan *chan)
++{
++ struct adm_chan *achan = to_adm_chan(chan);
++ unsigned long flags;
++
++ spin_lock_irqsave(&achan->vc.lock, flags);
++
++ if (vchan_issue_pending(&achan->vc) && !achan->curr_txd)
++ adm_start_dma(achan);
++ spin_unlock_irqrestore(&achan->vc.lock, flags);
++}
++
++/**
++ * adm_dma_free_desc - free descriptor memory
++ * @vd: virtual descriptor
++ *
++ */
++static void adm_dma_free_desc(struct virt_dma_desc *vd)
++{
++ struct adm_async_desc *async_desc = container_of(vd,
++ struct adm_async_desc, vd);
++
++ dma_free_writecombine(async_desc->adev->dev, async_desc->dma_len,
++ async_desc->cpl, async_desc->dma_addr);
++ kfree(async_desc);
++}
++
++static void adm_channel_init(struct adm_device *adev, struct adm_chan *achan,
++ u32 index)
++{
++ achan->id = index;
++ achan->adev = adev;
++
++ vchan_init(&achan->vc, &adev->common);
++ achan->vc.desc_free = adm_dma_free_desc;
++}
++
++static int adm_dma_probe(struct platform_device *pdev)
++{
++ struct adm_device *adev;
++ struct resource *iores;
++ int ret;
++ u32 i;
++
++ adev = devm_kzalloc(&pdev->dev, sizeof(*adev), GFP_KERNEL);
++ if (!adev)
++ return -ENOMEM;
++
++ adev->dev = &pdev->dev;
++
++ iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ adev->regs = devm_ioremap_resource(&pdev->dev, iores);
++ if (IS_ERR(adev->regs))
++ return PTR_ERR(adev->regs);
++
++ adev->irq = platform_get_irq(pdev, 0);
++ if (adev->irq < 0)
++ return adev->irq;
++
++ ret = of_property_read_u32(pdev->dev.of_node, "qcom,ee", &adev->ee);
++ if (ret) {
++ dev_err(adev->dev, "Execution environment unspecified\n");
++ return ret;
++ }
++
++ adev->core_clk = devm_clk_get(adev->dev, "core");
++ if (IS_ERR(adev->core_clk))
++ return PTR_ERR(adev->core_clk);
++
++ ret = clk_prepare_enable(adev->core_clk);
++ if (ret) {
++ dev_err(adev->dev, "failed to prepare/enable core clock\n");
++ return ret;
++ }
++
++ adev->iface_clk = devm_clk_get(adev->dev, "iface");
++ if (IS_ERR(adev->iface_clk)) {
++ ret = PTR_ERR(adev->iface_clk);
++ goto err_disable_core_clk;
++ }
++
++ ret = clk_prepare_enable(adev->iface_clk);
++ if (ret) {
++ dev_err(adev->dev, "failed to prepare/enable iface clock\n");
++ goto err_disable_core_clk;
++ }
++
++ adev->clk_reset = devm_reset_control_get(&pdev->dev, "clk");
++ if (IS_ERR(adev->clk_reset)) {
++ dev_err(adev->dev, "failed to get ADM0 reset\n");
++ ret = PTR_ERR(adev->clk_reset);
++ goto err_disable_clks;
++ }
++
++ adev->c0_reset = devm_reset_control_get(&pdev->dev, "c0");
++ if (IS_ERR(adev->c0_reset)) {
++ dev_err(adev->dev, "failed to get ADM0 C0 reset\n");
++ ret = PTR_ERR(adev->c0_reset);
++ goto err_disable_clks;
++ }
++
++ adev->c1_reset = devm_reset_control_get(&pdev->dev, "c1");
++ if (IS_ERR(adev->c1_reset)) {
++ dev_err(adev->dev, "failed to get ADM0 C1 reset\n");
++ ret = PTR_ERR(adev->c1_reset);
++ goto err_disable_clks;
++ }
++
++ adev->c2_reset = devm_reset_control_get(&pdev->dev, "c2");
++ if (IS_ERR(adev->c2_reset)) {
++ dev_err(adev->dev, "failed to get ADM0 C2 reset\n");
++ ret = PTR_ERR(adev->c2_reset);
++ goto err_disable_clks;
++ }
++
++ reset_control_assert(adev->clk_reset);
++ reset_control_assert(adev->c0_reset);
++ reset_control_assert(adev->c1_reset);
++ reset_control_assert(adev->c2_reset);
++
++ reset_control_deassert(adev->clk_reset);
++ reset_control_deassert(adev->c0_reset);
++ reset_control_deassert(adev->c1_reset);
++ reset_control_deassert(adev->c2_reset);
++
++ adev->channels = devm_kcalloc(adev->dev, ADM_MAX_CHANNELS,
++ sizeof(*adev->channels), GFP_KERNEL);
++
++ if (!adev->channels) {
++ ret = -ENOMEM;
++ goto err_disable_clks;
++ }
++
++ /* allocate and initialize channels */
++ INIT_LIST_HEAD(&adev->common.channels);
++
++ for (i = 0; i < ADM_MAX_CHANNELS; i++)
++ adm_channel_init(adev, &adev->channels[i], i);
++
++ /* reset CRCIs */
++ for (i = 0; i < 16; i++)
++ writel(ADM_CRCI_CTL_RST, adev->regs +
++ ADM_CRCI_CTL(i, adev->ee));
++
++ /* configure client interfaces */
++ writel(ADM_CI_RANGE_START(0x40) | ADM_CI_RANGE_END(0xb0) |
++ ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(0));
++ writel(ADM_CI_RANGE_START(0x2a) | ADM_CI_RANGE_END(0x2c) |
++ ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(1));
++ writel(ADM_CI_RANGE_START(0x12) | ADM_CI_RANGE_END(0x28) |
++ ADM_CI_BURST_8_WORDS, adev->regs + ADM_CI_CONF(2));
++ writel(ADM_GP_CTL_LP_EN | ADM_GP_CTL_LP_CNT(0xf),
++ adev->regs + ADM_GP_CTL);
++
++ ret = devm_request_irq(adev->dev, adev->irq, adm_dma_irq,
++ 0, "adm_dma", adev);
++ if (ret)
++ goto err_disable_clks;
++
++ platform_set_drvdata(pdev, adev);
++
++ adev->common.dev = adev->dev;
++ adev->common.dev->dma_parms = &adev->dma_parms;
++
++ /* set capabilities */
++ dma_cap_zero(adev->common.cap_mask);
++ dma_cap_set(DMA_SLAVE, adev->common.cap_mask);
++ dma_cap_set(DMA_PRIVATE, adev->common.cap_mask);
++
++ /* initialize dmaengine apis */
++ adev->common.device_free_chan_resources = adm_free_chan;
++ adev->common.device_prep_slave_sg = adm_prep_slave_sg;
++ adev->common.device_issue_pending = adm_issue_pending;
++ adev->common.device_tx_status = adm_tx_status;
++ adev->common.device_terminate_all = adm_terminate_all;
++ adev->common.device_config = adm_slave_config;
++
++ ret = dma_async_device_register(&adev->common);
++ if (ret) {
++ dev_err(adev->dev, "failed to register dma async device\n");
++ goto err_disable_clks;
++ }
++
++ ret = of_dma_controller_register(pdev->dev.of_node,
++ of_dma_xlate_by_chan_id,
++ &adev->common);
++ if (ret)
++ goto err_unregister_dma;
++
++ return 0;
++
++err_unregister_dma:
++ dma_async_device_unregister(&adev->common);
++err_disable_clks:
++ clk_disable_unprepare(adev->iface_clk);
++err_disable_core_clk:
++ clk_disable_unprepare(adev->core_clk);
++
++ return ret;
++}
++
++static int adm_dma_remove(struct platform_device *pdev)
++{
++ struct adm_device *adev = platform_get_drvdata(pdev);
++ struct adm_chan *achan;
++ u32 i;
++
++ of_dma_controller_free(pdev->dev.of_node);
++ dma_async_device_unregister(&adev->common);
++
++ for (i = 0; i < ADM_MAX_CHANNELS; i++) {
++ achan = &adev->channels[i];
++
++ /* mask IRQs for this channel/EE pair */
++ writel(0, adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee));
++
++ adm_terminate_all(&adev->channels[i].vc.chan);
++ }
++
++ devm_free_irq(adev->dev, adev->irq, adev);
++
++ clk_disable_unprepare(adev->core_clk);
++ clk_disable_unprepare(adev->iface_clk);
++
++ return 0;
++}
++
++static const struct of_device_id adm_of_match[] = {
++ { .compatible = "qcom,adm", },
++ {}
++};
++MODULE_DEVICE_TABLE(of, adm_of_match);
++
++static struct platform_driver adm_dma_driver = {
++ .probe = adm_dma_probe,
++ .remove = adm_dma_remove,
++ .driver = {
++ .name = "adm-dma-engine",
++ .of_match_table = adm_of_match,
++ },
++};
++
++module_platform_driver(adm_dma_driver);
++
++MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>");
++MODULE_DESCRIPTION("QCOM ADM DMA engine driver");
++MODULE_LICENSE("GPL v2");
+--- a/drivers/dma/Makefile
++++ b/drivers/dma/Makefile
+@@ -49,3 +49,4 @@ obj-y += xilinx/
+ obj-$(CONFIG_INTEL_MIC_X100_DMA) += mic_x100_dma.o
+ obj-$(CONFIG_NBPFAXI_DMA) += nbpfaxi.o
+ obj-$(CONFIG_DMA_SUN6I) += sun6i-dma.o
++obj-$(CONFIG_QCOM_ADM) += qcom_adm.o
--- /dev/null
+From 1fb18acab2d71e7e4efd9c10492edb1baf84dcc0 Mon Sep 17 00:00:00 2001
+From: Andy Gross <agross@codeaurora.org>
+Date: Wed, 20 May 2015 15:41:07 +0530
+Subject: [PATCH] ARM: DT: ipq8064: Add ADM device node
+
+This patch adds support for the ADM DMA on the IPQ8064 SOC
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 4 ++++
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 21 +++++++++++++++++++++
+ 2 files changed, 25 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -705,6 +705,26 @@
+ };
+ };
+
++ adm_dma: dma@18300000 {
++ compatible = "qcom,adm";
++ reg = <0x18300000 0x100000>;
++ interrupts = <0 170 0>;
++ #dma-cells = <1>;
++
++ clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
++ clock-names = "core", "iface";
++
++ resets = <&gcc ADM0_RESET>,
++ <&gcc ADM0_PBUS_RESET>,
++ <&gcc ADM0_C0_RESET>,
++ <&gcc ADM0_C1_RESET>,
++ <&gcc ADM0_C2_RESET>;
++ reset-names = "clk", "pbus", "c0", "c1", "c2";
++ qcom,ee = <0>;
++
++ status = "disabled";
++ };
++
+ };
+
+ sfpb_mutex: sfpb-mutex {
--- /dev/null
+From 4c385b25fab119144bffb255ad77712fe586ac10 Mon Sep 17 00:00:00 2001
+From: Archit Taneja <architt@codeaurora.org>
+Date: Thu, 2 Apr 2015 11:20:41 +0530
+Subject: [PATCH] clk: qcom: Add EBI2 clocks for IPQ806x
+
+The NAND controller within EBI2 requires EBI2_CLK and
+EBI2_ALWAYS_ON_CLK clocks. Create structs for these clocks so
+that they can be used by the NAND controller driver. Add an entry
+for EBI2_AON_CLK in the gcc-ipq806x DT binding document.
+
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+---
+ drivers/clk/qcom/gcc-ipq806x.c | 32 ++++++++++++++++++++++++++++
+ include/dt-bindings/clock/qcom,gcc-ipq806x.h | 1 +
+ 2 files changed, 33 insertions(+)
+
+--- a/drivers/clk/qcom/gcc-ipq806x.c
++++ b/drivers/clk/qcom/gcc-ipq806x.c
+@@ -2239,6 +2239,36 @@ static struct clk_branch usb_fs1_h_clk =
+ },
+ };
+
++static struct clk_branch ebi2_clk = {
++ .hwcg_reg = 0x3b00,
++ .hwcg_bit = 6,
++ .halt_reg = 0x2fcc,
++ .halt_bit = 1,
++ .clkr = {
++ .enable_reg = 0x3b00,
++ .enable_mask = BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "ebi2_clk",
++ .ops = &clk_branch_ops,
++ .flags = CLK_IS_ROOT,
++ },
++ },
++};
++
++static struct clk_branch ebi2_aon_clk = {
++ .halt_reg = 0x2fcc,
++ .halt_bit = 0,
++ .clkr = {
++ .enable_reg = 0x3b00,
++ .enable_mask = BIT(8),
++ .hw.init = &(struct clk_init_data){
++ .name = "ebi2_always_on_clk",
++ .ops = &clk_branch_ops,
++ .flags = CLK_IS_ROOT,
++ },
++ },
++};
++
+ static struct clk_regmap *gcc_ipq806x_clks[] = {
+ [PLL0] = &pll0.clkr,
+ [PLL0_VOTE] = &pll0_vote,
+@@ -2341,6 +2371,8 @@ static struct clk_regmap *gcc_ipq806x_cl
+ [USB_FS1_XCVR_SRC] = &usb_fs1_xcvr_clk_src.clkr,
+ [USB_FS1_XCVR_CLK] = &usb_fs1_xcvr_clk.clkr,
+ [USB_FS1_SYSTEM_CLK] = &usb_fs1_sys_clk.clkr,
++ [EBI2_CLK] = &ebi2_clk.clkr,
++ [EBI2_AON_CLK] = &ebi2_aon_clk.clkr,
+ [PLL9] = &hfpll0.clkr,
+ [PLL10] = &hfpll1.clkr,
+ [PLL12] = &hfpll_l2.clkr,
+--- a/include/dt-bindings/clock/qcom,gcc-ipq806x.h
++++ b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
+@@ -289,5 +289,6 @@
+ #define UBI32_CORE2_CLK_SRC 278
+ #define UBI32_CORE1_CLK 279
+ #define UBI32_CORE2_CLK 280
++#define EBI2_AON_CLK 281
+
+ #endif
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,
+ 1/5] mtd: nand: Create a BBT flag to access bad block markers in raw
+ mode
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927081
+Message-Id: <1438578498-32254-2-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+ cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+ sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+ Archit Taneja <architt@codeaurora.org>
+Date: Mon, 3 Aug 2015 10:38:14 +0530
+
+Some controllers can access the factory bad block marker from OOB only
+when they read it in raw mode. When ECC is enabled, these controllers
+discard reading/writing bad block markers, preventing access to them
+altogether.
+
+The bbt driver assumes MTD_OPS_PLACE_OOB when scanning for bad blocks.
+This results in the nand driver's ecc->read_oob() op to be called, which
+works with ECC enabled.
+
+Create a new BBT option flag that tells nand_bbt to force the mode to
+MTD_OPS_RAW. This would result in the correct op being called for the
+underlying nand controller driver.
+
+Reviewed-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+drivers/mtd/nand/nand_base.c | 6 +++++-
+ drivers/mtd/nand/nand_bbt.c | 6 +++++-
+ include/linux/mtd/bbm.h | 7 +++++++
+ 3 files changed, 17 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -396,7 +396,11 @@ static int nand_default_block_markbad(st
+ } else {
+ ops.len = ops.ooblen = 1;
+ }
+- ops.mode = MTD_OPS_PLACE_OOB;
++
++ if (unlikely(chip->bbt_options & NAND_BBT_ACCESS_BBM_RAW))
++ ops.mode = MTD_OPS_RAW;
++ else
++ ops.mode = MTD_OPS_PLACE_OOB;
+
+ /* Write to first/last page(s) if necessary */
+ if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+--- a/drivers/mtd/nand/nand_bbt.c
++++ b/drivers/mtd/nand/nand_bbt.c
+@@ -423,7 +423,11 @@ static int scan_block_fast(struct mtd_in
+ ops.oobbuf = buf;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+- ops.mode = MTD_OPS_PLACE_OOB;
++
++ if (unlikely(bd->options & NAND_BBT_ACCESS_BBM_RAW))
++ ops.mode = MTD_OPS_RAW;
++ else
++ ops.mode = MTD_OPS_PLACE_OOB;
+
+ for (j = 0; j < numpages; j++) {
+ /*
+--- a/include/linux/mtd/bbm.h
++++ b/include/linux/mtd/bbm.h
+@@ -116,6 +116,13 @@ struct nand_bbt_descr {
+ #define NAND_BBT_NO_OOB_BBM 0x00080000
+
+ /*
++ * Force MTD_OPS_RAW mode when trying to access bad block markes from OOB. To
++ * be used by controllers which can access BBM only when ECC is disabled, i.e,
++ * when in RAW access mode
++ */
++#define NAND_BBT_ACCESS_BBM_RAW 0x00100000
++
++/*
+ * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr
+ * was allocated dynamicaly and must be freed in nand_release(). Has no meaning
+ * in nand_chip.bbt_options.
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,2/5] mtd: nand: Qualcomm NAND controller driver
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927101
+Message-Id: <1438578498-32254-3-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+ cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+ sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+ Archit Taneja <architt@codeaurora.org>
+Date: Mon, 3 Aug 2015 10:38:15 +0530
+
+The Qualcomm NAND controller is found in SoCs like IPQ806x, MSM7xx,
+MDM9x15 series.
+
+It exists as a sub block inside the IPs EBI2 (External Bus Interface 2)
+and QPIC (Qualcomm Parallel Interface Controller). These IPs provide a
+broader interface for external slow peripheral devices such as LCD and
+NAND/NOR flash memory or SRAM like interfaces.
+
+We add support for the NAND controller found within EBI2. For the SoCs
+of our interest, we only use the NAND controller within EBI2. Therefore,
+it's safe for us to assume that the NAND controller is a standalone block
+within the SoC.
+
+The controller supports 512B, 2kB, 4kB and 8kB page 8-bit and 16-bit NAND
+flash devices. It contains a HW ECC block that supports BCH ECC (4, 8 and
+16 bit correction/step) and RS ECC(4 bit correction/step) that covers main
+and spare data. The controller contains an internal 512 byte page buffer
+to which we read/write via DMA. The EBI2 type NAND controller uses ADM DMA
+for register read/write and data transfers. The controller performs page
+reads and writes at a codeword/step level of 512 bytes. It can support up
+to 2 external chips of different configurations.
+
+The driver prepares register read and write configuration descriptors for
+each codeword, followed by data descriptors to read or write data from the
+controller's internal buffer. It uses a single ADM DMA channel that we get
+via dmaengine API. The controller requires 2 ADM CRCIs for command and
+data flow control. These are passed via DT.
+
+The ecc layout used by the controller is syndrome like, but we can't use
+the standard syndrome ecc ops because of several reasons. First, the amount
+of data bytes covered by ecc isn't same in each step. Second, writing to
+free oob space requires us writing to the entire step in which the oob
+lies. This forces us to create our own ecc ops.
+
+One more difference is how the controller accesses the bad block marker.
+The controller ignores reading the marker when ECC is enabled. ECC needs
+to be explicity disabled to read or write to the bad block marker. For
+this reason, we use the newly created flag NAND_BBT_ACCESS_BBM_RAW to
+read the factory provided bad block markers.
+
+v3:
+- Refactor dma functions for maximum reuse
+- Use dma_slave_confing on stack
+- optimize and clean upempty_page_fixup using memchr_inv
+- ensure portability with dma register reads using le32_* funcs
+- use NAND_USE_BOUNCE_BUFFER instead of doing it ourselves
+- fix handling of return values of dmaengine funcs
+- constify wherever possible
+- Remove dependency on ADM DMA in Kconfig
+- Misc fixes and clean ups
+
+v2:
+- Use new BBT flag that allows us to read BBM in raw mode
+- reduce memcpy-s in the driver
+- some refactor and clean ups because of above changes
+
+Reviewed-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+drivers/mtd/nand/Kconfig | 7 +
+ drivers/mtd/nand/Makefile | 1 +
+ drivers/mtd/nand/qcom_nandc.c | 1913 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 1921 insertions(+)
+ create mode 100644 drivers/mtd/nand/qcom_nandc.c
+
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -516,4 +516,11 @@ config MTD_NAND_XWAY
+ Enables support for NAND Flash chips on Lantiq XWAY SoCs. NAND is attached
+ to the External Bus Unit (EBU).
+
++config MTD_NAND_QCOM
++ tristate "Support for NAND on QCOM SoCs"
++ depends on ARCH_QCOM
++ help
++ Enables support for NAND flash chips on SoCs containing the EBI2 NAND
++ controller. This controller is found on IPQ806x SoC.
++
+ endif # MTD_NAND
+--- /dev/null
++++ b/drivers/mtd/nand/qcom_nandc.c
+@@ -0,0 +1,1918 @@
++/*
++ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/slab.h>
++#include <linux/bitops.h>
++#include <linux/dma-mapping.h>
++#include <linux/dmaengine.h>
++#include <linux/module.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/of_mtd.h>
++#include <linux/delay.h>
++
++/* NANDc reg offsets */
++#define NAND_FLASH_CMD 0x00
++#define NAND_ADDR0 0x04
++#define NAND_ADDR1 0x08
++#define NAND_FLASH_CHIP_SELECT 0x0c
++#define NAND_EXEC_CMD 0x10
++#define NAND_FLASH_STATUS 0x14
++#define NAND_BUFFER_STATUS 0x18
++#define NAND_DEV0_CFG0 0x20
++#define NAND_DEV0_CFG1 0x24
++#define NAND_DEV0_ECC_CFG 0x28
++#define NAND_DEV1_ECC_CFG 0x2c
++#define NAND_DEV1_CFG0 0x30
++#define NAND_DEV1_CFG1 0x34
++#define NAND_READ_ID 0x40
++#define NAND_READ_STATUS 0x44
++#define NAND_DEV_CMD0 0xa0
++#define NAND_DEV_CMD1 0xa4
++#define NAND_DEV_CMD2 0xa8
++#define NAND_DEV_CMD_VLD 0xac
++#define SFLASHC_BURST_CFG 0xe0
++#define NAND_ERASED_CW_DETECT_CFG 0xe8
++#define NAND_ERASED_CW_DETECT_STATUS 0xec
++#define NAND_EBI2_ECC_BUF_CFG 0xf0
++#define FLASH_BUF_ACC 0x100
++
++#define NAND_CTRL 0xf00
++#define NAND_VERSION 0xf08
++#define NAND_READ_LOCATION_0 0xf20
++#define NAND_READ_LOCATION_1 0xf24
++
++/* dummy register offsets, used by write_reg_dma */
++#define NAND_DEV_CMD1_RESTORE 0xdead
++#define NAND_DEV_CMD_VLD_RESTORE 0xbeef
++
++/* NAND_FLASH_CMD bits */
++#define PAGE_ACC BIT(4)
++#define LAST_PAGE BIT(5)
++
++/* NAND_FLASH_CHIP_SELECT bits */
++#define NAND_DEV_SEL 0
++#define DM_EN BIT(2)
++
++/* NAND_FLASH_STATUS bits */
++#define FS_OP_ERR BIT(4)
++#define FS_READY_BSY_N BIT(5)
++#define FS_MPU_ERR BIT(8)
++#define FS_DEVICE_STS_ERR BIT(16)
++#define FS_DEVICE_WP BIT(23)
++
++/* NAND_BUFFER_STATUS bits */
++#define BS_UNCORRECTABLE_BIT BIT(8)
++#define BS_CORRECTABLE_ERR_MSK 0x1f
++
++/* NAND_DEVn_CFG0 bits */
++#define DISABLE_STATUS_AFTER_WRITE 4
++#define CW_PER_PAGE 6
++#define UD_SIZE_BYTES 9
++#define ECC_PARITY_SIZE_BYTES_RS 19
++#define SPARE_SIZE_BYTES 23
++#define NUM_ADDR_CYCLES 27
++#define STATUS_BFR_READ 30
++#define SET_RD_MODE_AFTER_STATUS 31
++
++/* NAND_DEVn_CFG0 bits */
++#define DEV0_CFG1_ECC_DISABLE 0
++#define WIDE_FLASH 1
++#define NAND_RECOVERY_CYCLES 2
++#define CS_ACTIVE_BSY 5
++#define BAD_BLOCK_BYTE_NUM 6
++#define BAD_BLOCK_IN_SPARE_AREA 16
++#define WR_RD_BSY_GAP 17
++#define ENABLE_BCH_ECC 27
++
++/* NAND_DEV0_ECC_CFG bits */
++#define ECC_CFG_ECC_DISABLE 0
++#define ECC_SW_RESET 1
++#define ECC_MODE 4
++#define ECC_PARITY_SIZE_BYTES_BCH 8
++#define ECC_NUM_DATA_BYTES 16
++#define ECC_FORCE_CLK_OPEN 30
++
++/* NAND_DEV_CMD1 bits */
++#define READ_ADDR 0
++
++/* NAND_DEV_CMD_VLD bits */
++#define READ_START_VLD 0
++
++/* NAND_EBI2_ECC_BUF_CFG bits */
++#define NUM_STEPS 0
++
++/* NAND_ERASED_CW_DETECT_CFG bits */
++#define ERASED_CW_ECC_MASK 1
++#define AUTO_DETECT_RES 0
++#define MASK_ECC (1 << ERASED_CW_ECC_MASK)
++#define RESET_ERASED_DET (1 << AUTO_DETECT_RES)
++#define ACTIVE_ERASED_DET (0 << AUTO_DETECT_RES)
++#define CLR_ERASED_PAGE_DET (RESET_ERASED_DET | MASK_ECC)
++#define SET_ERASED_PAGE_DET (ACTIVE_ERASED_DET | MASK_ECC)
++
++/* NAND_ERASED_CW_DETECT_STATUS bits */
++#define PAGE_ALL_ERASED BIT(7)
++#define CODEWORD_ALL_ERASED BIT(6)
++#define PAGE_ERASED BIT(5)
++#define CODEWORD_ERASED BIT(4)
++#define ERASED_PAGE (PAGE_ALL_ERASED | PAGE_ERASED)
++#define ERASED_CW (CODEWORD_ALL_ERASED | CODEWORD_ERASED)
++
++/* Version Mask */
++#define NAND_VERSION_MAJOR_MASK 0xf0000000
++#define NAND_VERSION_MAJOR_SHIFT 28
++#define NAND_VERSION_MINOR_MASK 0x0fff0000
++#define NAND_VERSION_MINOR_SHIFT 16
++
++/* NAND OP_CMDs */
++#define PAGE_READ 0x2
++#define PAGE_READ_WITH_ECC 0x3
++#define PAGE_READ_WITH_ECC_SPARE 0x4
++#define PROGRAM_PAGE 0x6
++#define PAGE_PROGRAM_WITH_ECC 0x7
++#define PROGRAM_PAGE_SPARE 0x9
++#define BLOCK_ERASE 0xa
++#define FETCH_ID 0xb
++#define RESET_DEVICE 0xd
++
++/*
++ * the NAND controller performs reads/writes with ECC in 516 byte chunks.
++ * the driver calls the chunks 'step' or 'codeword' interchangeably
++ */
++#define NANDC_STEP_SIZE 512
++
++/*
++ * the largest page size we support is 8K, this will have 16 steps/codewords
++ * of 512 bytes each
++ */
++#define MAX_NUM_STEPS (SZ_8K / NANDC_STEP_SIZE)
++
++/* we read at most 3 registers per codeword scan */
++#define MAX_REG_RD (3 * MAX_NUM_STEPS)
++
++/* ECC modes */
++#define ECC_NONE BIT(0)
++#define ECC_RS_4BIT BIT(1)
++#define ECC_BCH_4BIT BIT(2)
++#define ECC_BCH_8BIT BIT(3)
++
++struct desc_info {
++ struct list_head list;
++
++ enum dma_transfer_direction dir;
++ struct scatterlist sgl;
++ struct dma_async_tx_descriptor *dma_desc;
++};
++
++/*
++ * holds the current register values that we want to write. acts as a contiguous
++ * chunk of memory which we use to write the controller registers through DMA.
++ */
++struct nandc_regs {
++ u32 cmd;
++ u32 addr0;
++ u32 addr1;
++ u32 chip_sel;
++ u32 exec;
++
++ u32 cfg0;
++ u32 cfg1;
++ u32 ecc_bch_cfg;
++
++ u32 clrflashstatus;
++ u32 clrreadstatus;
++
++ u32 cmd1;
++ u32 vld;
++
++ u32 orig_cmd1;
++ u32 orig_vld;
++
++ u32 ecc_buf_cfg;
++};
++
++/*
++ * @cmd_crci: ADM DMA CRCI for command flow control
++ * @data_crci: ADM DMA CRCI for data flow control
++ * @list: DMA descriptor list (list of desc_infos)
++ * @dma_done: completion param to denote end of last
++ * descriptor in the list
++ * @data_buffer: our local DMA buffer for page read/writes,
++ * used when we can't use the buffer provided
++ * by upper layers directly
++ * @buf_size/count/start: markers for chip->read_buf/write_buf functions
++ * @reg_read_buf: buffer for reading register data via DMA
++ * @reg_read_pos: marker for data read in reg_read_buf
++ * @cfg0, cfg1, cfg0_raw..: NANDc register configurations needed for
++ * ecc/non-ecc mode for the current nand flash
++ * device
++ * @regs: a contiguous chunk of memory for DMA register
++ * writes
++ * @ecc_strength: 4 bit or 8 bit ecc, received via DT
++ * @bus_width: 8 bit or 16 bit NAND bus width, received via DT
++ * @ecc_modes: supported ECC modes by the current controller,
++ * initialized via DT match data
++ * @cw_size: the number of bytes in a single step/codeword
++ * of a page, consisting of all data, ecc, spare
++ * and reserved bytes
++ * @cw_data: the number of bytes within a codeword protected
++ * by ECC
++ * @bch_enabled: flag to tell whether BCH or RS ECC mode is used
++ * @status: value to be returned if NAND_CMD_STATUS command
++ * is executed
++ */
++struct qcom_nandc_data {
++ struct platform_device *pdev;
++ struct device *dev;
++
++ void __iomem *base;
++ struct resource *res;
++
++ struct clk *core_clk;
++ struct clk *aon_clk;
++
++ /* DMA stuff */
++ struct dma_chan *chan;
++ struct dma_slave_config slave_conf;
++ unsigned int cmd_crci;
++ unsigned int data_crci;
++ struct list_head list;
++ struct completion dma_done;
++
++ /* MTD stuff */
++ struct nand_chip chip;
++ struct mtd_info mtd;
++
++ /* local data buffer and markers */
++ u8 *data_buffer;
++ int buf_size;
++ int buf_count;
++ int buf_start;
++
++ /* local buffer to read back registers */
++ u32 *reg_read_buf;
++ int reg_read_pos;
++
++ /* required configs */
++ u32 cfg0, cfg1;
++ u32 cfg0_raw, cfg1_raw;
++ u32 ecc_buf_cfg;
++ u32 ecc_bch_cfg;
++ u32 clrflashstatus;
++ u32 clrreadstatus;
++ u32 sflashc_burst_cfg;
++ u32 cmd1, vld;
++
++ /* register state */
++ struct nandc_regs *regs;
++
++ /* things we get from DT */
++ int ecc_strength;
++ int bus_width;
++
++ u32 ecc_modes;
++
++ /* misc params */
++ int cw_size;
++ int cw_data;
++ bool use_ecc;
++ bool bch_enabled;
++ u8 status;
++ int last_command;
++};
++
++static inline u32 nandc_read(struct qcom_nandc_data *this, int offset)
++{
++ return ioread32(this->base + offset);
++}
++
++static inline void nandc_write(struct qcom_nandc_data *this, int offset,
++ u32 val)
++{
++ iowrite32(val, this->base + offset);
++}
++
++/* helper to configure address register values */
++static void set_address(struct qcom_nandc_data *this, u16 column, int page)
++{
++ struct nand_chip *chip = &this->chip;
++ struct nandc_regs *regs = this->regs;
++
++ if (chip->options & NAND_BUSWIDTH_16)
++ column >>= 1;
++
++ regs->addr0 = page << 16 | column;
++ regs->addr1 = page >> 16 & 0xff;
++}
++
++/*
++ * update_rw_regs: set up read/write register values, these will be
++ * written to the NAND controller registers via DMA
++ *
++ * @num_cw: number of steps for the read/write operation
++ * @read: read or write operation
++ */
++static void update_rw_regs(struct qcom_nandc_data *this, int num_cw, bool read)
++{
++ struct nandc_regs *regs = this->regs;
++
++ if (read) {
++ if (this->use_ecc)
++ regs->cmd = PAGE_READ_WITH_ECC | PAGE_ACC | LAST_PAGE;
++ else
++ regs->cmd = PAGE_READ | PAGE_ACC | LAST_PAGE;
++ } else {
++ regs->cmd = PROGRAM_PAGE | PAGE_ACC | LAST_PAGE;
++ }
++
++ if (this->use_ecc) {
++ regs->cfg0 = (this->cfg0 & ~(7U << CW_PER_PAGE)) |
++ (num_cw - 1) << CW_PER_PAGE;
++
++ regs->cfg1 = this->cfg1;
++ regs->ecc_bch_cfg = this->ecc_bch_cfg;
++ } else {
++ regs->cfg0 = (this->cfg0_raw & ~(7U << CW_PER_PAGE)) |
++ (num_cw - 1) << CW_PER_PAGE;
++
++ regs->cfg1 = this->cfg1_raw;
++ regs->ecc_bch_cfg = 1 << ECC_CFG_ECC_DISABLE;
++ }
++
++ regs->ecc_buf_cfg = this->ecc_buf_cfg;
++ regs->clrflashstatus = this->clrflashstatus;
++ regs->clrreadstatus = this->clrreadstatus;
++ regs->exec = 1;
++}
++
++static int prep_dma_desc(struct qcom_nandc_data *this, bool read, int reg_off,
++ const void *vaddr, int size, bool flow_control)
++{
++ struct desc_info *desc;
++ struct dma_async_tx_descriptor *dma_desc;
++ struct scatterlist *sgl;
++ struct dma_slave_config slave_conf;
++ int r;
++
++ desc = kzalloc(sizeof(*desc), GFP_KERNEL);
++ if (!desc)
++ return -ENOMEM;
++
++ list_add_tail(&desc->list, &this->list);
++
++ sgl = &desc->sgl;
++
++ sg_init_one(sgl, vaddr, size);
++
++ desc->dir = read ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
++
++ r = dma_map_sg(this->dev, sgl, 1, desc->dir);
++ if (r == 0) {
++ r = -ENOMEM;
++ goto err;
++ }
++
++ memset(&slave_conf, 0x00, sizeof(slave_conf));
++
++ slave_conf.device_fc = flow_control;
++ if (read) {
++ slave_conf.src_maxburst = 16;
++ slave_conf.src_addr = this->res->start + reg_off;
++ slave_conf.slave_id = this->data_crci;
++ } else {
++ slave_conf.dst_maxburst = 16;
++ slave_conf.dst_addr = this->res->start + reg_off;
++ slave_conf.slave_id = this->cmd_crci;
++ }
++
++ r = dmaengine_slave_config(this->chan, &slave_conf);
++ if (r) {
++ dev_err(this->dev, "failed to configure dma channel\n");
++ goto err;
++ }
++
++ dma_desc = dmaengine_prep_slave_sg(this->chan, sgl, 1, desc->dir, 0);
++ if (!dma_desc) {
++ dev_err(this->dev, "failed to prepare desc\n");
++ r = -EINVAL;
++ goto err;
++ }
++
++ desc->dma_desc = dma_desc;
++
++ return 0;
++err:
++ kfree(desc);
++
++ return r;
++}
++
++/*
++ * read_reg_dma: prepares a descriptor to read a given number of
++ * contiguous registers to the reg_read_buf pointer
++ *
++ * @first: offset of the first register in the contiguous block
++ * @num_regs: number of registers to read
++ */
++static int read_reg_dma(struct qcom_nandc_data *this, int first, int num_regs)
++{
++ bool flow_control = false;
++ void *vaddr;
++ int size;
++
++ if (first == NAND_READ_ID || first == NAND_FLASH_STATUS)
++ flow_control = true;
++
++ size = num_regs * sizeof(u32);
++ vaddr = this->reg_read_buf + this->reg_read_pos;
++ this->reg_read_pos += num_regs;
++
++ return prep_dma_desc(this, true, first, vaddr, size, flow_control);
++}
++
++/*
++ * write_reg_dma: prepares a descriptor to write a given number of
++ * contiguous registers
++ *
++ * @first: offset of the first register in the contiguous block
++ * @num_regs: number of registers to write
++ */
++static int write_reg_dma(struct qcom_nandc_data *this, int first, int num_regs)
++{
++ bool flow_control = false;
++ struct nandc_regs *regs = this->regs;
++ void *vaddr;
++ int size;
++
++ switch (first) {
++ case NAND_FLASH_CMD:
++ vaddr = ®s->cmd;
++ flow_control = true;
++ break;
++ case NAND_EXEC_CMD:
++ vaddr = ®s->exec;
++ break;
++ case NAND_FLASH_STATUS:
++ vaddr = ®s->clrflashstatus;
++ break;
++ case NAND_DEV0_CFG0:
++ vaddr = ®s->cfg0;
++ break;
++ case NAND_READ_STATUS:
++ vaddr = ®s->clrreadstatus;
++ break;
++ case NAND_DEV_CMD1:
++ vaddr = ®s->cmd1;
++ break;
++ case NAND_DEV_CMD1_RESTORE:
++ first = NAND_DEV_CMD1;
++ vaddr = ®s->orig_cmd1;
++ break;
++ case NAND_DEV_CMD_VLD:
++ vaddr = ®s->vld;
++ break;
++ case NAND_DEV_CMD_VLD_RESTORE:
++ first = NAND_DEV_CMD_VLD;
++ vaddr = ®s->orig_vld;
++ break;
++ case NAND_EBI2_ECC_BUF_CFG:
++ vaddr = ®s->ecc_buf_cfg;
++ break;
++ default:
++ dev_err(this->dev, "invalid starting register\n");
++ return -EINVAL;
++ }
++
++ size = num_regs * sizeof(u32);
++
++ return prep_dma_desc(this, false, first, vaddr, size, flow_control);
++}
++
++/*
++ * read_data_dma: prepares a DMA descriptor to transfer data from the
++ * controller's internal buffer to the buffer 'vaddr'
++ *
++ * @reg_off: offset within the controller's data buffer
++ * @vaddr: virtual address of the buffer we want to write to
++ * @size: DMA transaction size in bytes
++ */
++static int read_data_dma(struct qcom_nandc_data *this, int reg_off,
++ const u8 *vaddr, int size)
++{
++ return prep_dma_desc(this, true, reg_off, vaddr, size, false);
++}
++
++/*
++ * write_data_dma: prepares a DMA descriptor to transfer data from
++ * 'vaddr' to the controller's internal buffer
++ *
++ * @reg_off: offset within the controller's data buffer
++ * @vaddr: virtual address of the buffer we want to read from
++ * @size: DMA transaction size in bytes
++ */
++static int write_data_dma(struct qcom_nandc_data *this, int reg_off,
++ const u8 *vaddr, int size)
++{
++ return prep_dma_desc(this, false, reg_off, vaddr, size, false);
++}
++
++/*
++ * helper to prepare dma descriptors to configure registers needed for reading a
++ * codeword/step in a page
++ */
++static void config_cw_read(struct qcom_nandc_data *this)
++{
++ write_reg_dma(this, NAND_FLASH_CMD, 3);
++ write_reg_dma(this, NAND_DEV0_CFG0, 3);
++ write_reg_dma(this, NAND_EBI2_ECC_BUF_CFG, 1);
++
++ write_reg_dma(this, NAND_EXEC_CMD, 1);
++
++ read_reg_dma(this, NAND_FLASH_STATUS, 2);
++ read_reg_dma(this, NAND_ERASED_CW_DETECT_STATUS, 1);
++}
++
++/*
++ * helpers to prepare dma descriptors used to configure registers needed for
++ * writing a codeword/step in a page
++ */
++static void config_cw_write_pre(struct qcom_nandc_data *this)
++{
++ write_reg_dma(this, NAND_FLASH_CMD, 3);
++ write_reg_dma(this, NAND_DEV0_CFG0, 3);
++ write_reg_dma(this, NAND_EBI2_ECC_BUF_CFG, 1);
++}
++
++static void config_cw_write_post(struct qcom_nandc_data *this)
++{
++ write_reg_dma(this, NAND_EXEC_CMD, 1);
++
++ read_reg_dma(this, NAND_FLASH_STATUS, 1);
++
++ write_reg_dma(this, NAND_FLASH_STATUS, 1);
++ write_reg_dma(this, NAND_READ_STATUS, 1);
++}
++
++/*
++ * the following functions are used within chip->cmdfunc() to perform different
++ * NAND_CMD_* commands
++ */
++
++/* sets up descriptors for NAND_CMD_PARAM */
++static int nandc_param(struct qcom_nandc_data *this)
++{
++ struct nandc_regs *regs = this->regs;
++
++ /*
++ * NAND_CMD_PARAM is called before we know much about the FLASH chip
++ * in use. we configure the controller to perform a raw read of 512
++ * bytes to read onfi params
++ */
++ regs->cmd = PAGE_READ | PAGE_ACC | LAST_PAGE;
++ regs->addr0 = 0;
++ regs->addr1 = 0;
++ regs->cfg0 = 0 << CW_PER_PAGE
++ | 512 << UD_SIZE_BYTES
++ | 5 << NUM_ADDR_CYCLES
++ | 0 << SPARE_SIZE_BYTES;
++
++ regs->cfg1 = 7 << NAND_RECOVERY_CYCLES
++ | 0 << CS_ACTIVE_BSY
++ | 17 << BAD_BLOCK_BYTE_NUM
++ | 1 << BAD_BLOCK_IN_SPARE_AREA
++ | 2 << WR_RD_BSY_GAP
++ | 0 << WIDE_FLASH
++ | 1 << DEV0_CFG1_ECC_DISABLE;
++
++ regs->ecc_bch_cfg = 1 << ECC_CFG_ECC_DISABLE;
++
++ /* configure CMD1 and VLD for ONFI param probing */
++ regs->vld = (this->vld & ~(1 << READ_START_VLD))
++ | 0 << READ_START_VLD;
++
++ regs->cmd1 = (this->cmd1 & ~(0xFF << READ_ADDR))
++ | NAND_CMD_PARAM << READ_ADDR;
++
++ regs->exec = 1;
++
++ regs->orig_cmd1 = this->cmd1;
++ regs->orig_vld = this->vld;
++
++ write_reg_dma(this, NAND_DEV_CMD_VLD, 1);
++ write_reg_dma(this, NAND_DEV_CMD1, 1);
++
++ this->buf_count = 512;
++ memset(this->data_buffer, 0xff, this->buf_count);
++
++ config_cw_read(this);
++
++ read_data_dma(this, FLASH_BUF_ACC, this->data_buffer, this->buf_count);
++
++ /* restore CMD1 and VLD regs */
++ write_reg_dma(this, NAND_DEV_CMD1_RESTORE, 1);
++ write_reg_dma(this, NAND_DEV_CMD_VLD_RESTORE, 1);
++
++ return 0;
++}
++
++/* sets up descriptors for NAND_CMD_ERASE1 */
++static int erase_block(struct qcom_nandc_data *this, int page_addr)
++{
++ struct nandc_regs *regs = this->regs;
++
++ regs->cmd = BLOCK_ERASE | PAGE_ACC | LAST_PAGE;
++ regs->addr0 = page_addr;
++ regs->addr1 = 0;
++ regs->cfg0 = this->cfg0_raw & ~(7 << CW_PER_PAGE);
++ regs->cfg1 = this->cfg1_raw;
++ regs->exec = 1;
++ regs->clrflashstatus = this->clrflashstatus;
++ regs->clrreadstatus = this->clrreadstatus;
++
++ write_reg_dma(this, NAND_FLASH_CMD, 3);
++ write_reg_dma(this, NAND_DEV0_CFG0, 2);
++ write_reg_dma(this, NAND_EXEC_CMD, 1);
++
++ read_reg_dma(this, NAND_FLASH_STATUS, 1);
++
++ write_reg_dma(this, NAND_FLASH_STATUS, 1);
++ write_reg_dma(this, NAND_READ_STATUS, 1);
++
++ return 0;
++}
++
++/* sets up descriptors for NAND_CMD_READID */
++static int read_id(struct qcom_nandc_data *this, int column)
++{
++ struct nandc_regs *regs = this->regs;
++
++ if (column == -1)
++ return 0;
++
++ regs->cmd = FETCH_ID;
++ regs->addr0 = column;
++ regs->addr1 = 0;
++ regs->chip_sel = DM_EN;
++ regs->exec = 1;
++
++ write_reg_dma(this, NAND_FLASH_CMD, 4);
++ write_reg_dma(this, NAND_EXEC_CMD, 1);
++
++ read_reg_dma(this, NAND_READ_ID, 1);
++
++ return 0;
++}
++
++/* sets up descriptors for NAND_CMD_RESET */
++static int reset(struct qcom_nandc_data *this)
++{
++ struct nandc_regs *regs = this->regs;
++
++ regs->cmd = RESET_DEVICE;
++ regs->exec = 1;
++
++ write_reg_dma(this, NAND_FLASH_CMD, 1);
++ write_reg_dma(this, NAND_EXEC_CMD, 1);
++
++ read_reg_dma(this, NAND_FLASH_STATUS, 1);
++
++ return 0;
++}
++
++/* helpers to submit/free our list of dma descriptors */
++static void dma_callback(void *param)
++{
++ struct qcom_nandc_data *this = param;
++ struct completion *c = &this->dma_done;
++
++ complete(c);
++}
++
++static int submit_descs(struct qcom_nandc_data *this)
++{
++ struct completion *c = &this->dma_done;
++ struct desc_info *desc;
++ int r;
++
++ init_completion(c);
++
++ list_for_each_entry(desc, &this->list, list) {
++ /*
++ * we add a callback to the last descriptor in our list to
++ * notify completion of command
++ */
++ if (list_is_last(&desc->list, &this->list)) {
++ desc->dma_desc->callback = dma_callback;
++ desc->dma_desc->callback_param = this;
++ }
++
++ dmaengine_submit(desc->dma_desc);
++ }
++
++ dma_async_issue_pending(this->chan);
++
++ r = wait_for_completion_timeout(c, msecs_to_jiffies(500));
++ if (!r)
++ return -ETIMEDOUT;
++
++ return 0;
++}
++
++static void free_descs(struct qcom_nandc_data *this)
++{
++ struct desc_info *desc, *n;
++
++ list_for_each_entry_safe(desc, n, &this->list, list) {
++ list_del(&desc->list);
++ dma_unmap_sg(this->dev, &desc->sgl, 1, desc->dir);
++ kfree(desc);
++ }
++}
++
++/* reset the register read buffer for next NAND operation */
++static void clear_read_regs(struct qcom_nandc_data *this)
++{
++ this->reg_read_pos = 0;
++ memset(this->reg_read_buf, 0, MAX_REG_RD * sizeof(*this->reg_read_buf));
++}
++
++static void pre_command(struct qcom_nandc_data *this, int command)
++{
++ this->buf_count = 0;
++ this->buf_start = 0;
++ this->use_ecc = false;
++ this->last_command = command;
++
++ clear_read_regs(this);
++}
++
++/*
++ * this is called after NAND_CMD_PAGEPROG and NAND_CMD_ERASE1 to set our
++ * privately maintained status byte, this status byte can be read after
++ * NAND_CMD_STATUS is called
++ */
++static void parse_erase_write_errors(struct qcom_nandc_data *this, int command)
++{
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int num_cw;
++ int i;
++
++ num_cw = command == NAND_CMD_PAGEPROG ? ecc->steps : 1;
++
++ for (i = 0; i < num_cw; i++) {
++ __le32 flash_status = le32_to_cpu(this->reg_read_buf[i]);
++
++ if (flash_status & FS_MPU_ERR)
++ this->status &= ~NAND_STATUS_WP;
++
++ if (flash_status & FS_OP_ERR || (i == (num_cw - 1) &&
++ (flash_status & FS_DEVICE_STS_ERR)))
++ this->status |= NAND_STATUS_FAIL;
++ }
++}
++
++static void post_command(struct qcom_nandc_data *this, int command)
++{
++ switch (command) {
++ case NAND_CMD_READID:
++ memcpy(this->data_buffer, this->reg_read_buf, this->buf_count);
++ break;
++ case NAND_CMD_PAGEPROG:
++ case NAND_CMD_ERASE1:
++ parse_erase_write_errors(this, command);
++ break;
++ default:
++ break;
++ }
++}
++
++/*
++ * Implements chip->cmdfunc. It's only used for a limited set of commands.
++ * The rest of the commands wouldn't be called by upper layers. For example,
++ * NAND_CMD_READOOB would never be called because we have our own versions
++ * of read_oob ops for nand_ecc_ctrl.
++ */
++static void qcom_nandc_command(struct mtd_info *mtd, unsigned int command,
++ int column, int page_addr)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct qcom_nandc_data *this = chip->priv;
++ bool wait = false;
++ int r = 0;
++
++ pre_command(this, command);
++
++ switch (command) {
++ case NAND_CMD_RESET:
++ r = reset(this);
++ wait = true;
++ break;
++
++ case NAND_CMD_READID:
++ this->buf_count = 4;
++ r = read_id(this, column);
++ wait = true;
++ break;
++
++ case NAND_CMD_PARAM:
++ r = nandc_param(this);
++ wait = true;
++ break;
++
++ case NAND_CMD_ERASE1:
++ r = erase_block(this, page_addr);
++ wait = true;
++ break;
++
++ case NAND_CMD_READ0:
++ /* we read the entire page for now */
++ WARN_ON(column != 0);
++
++ this->use_ecc = true;
++ set_address(this, 0, page_addr);
++ update_rw_regs(this, ecc->steps, true);
++ break;
++
++ case NAND_CMD_SEQIN:
++ WARN_ON(column != 0);
++ set_address(this, 0, page_addr);
++ break;
++
++ case NAND_CMD_PAGEPROG:
++ case NAND_CMD_STATUS:
++ case NAND_CMD_NONE:
++ default:
++ break;
++ }
++
++ if (r) {
++ dev_err(this->dev, "failure executing command %d\n",
++ command);
++ free_descs(this);
++ return;
++ }
++
++ if (wait) {
++ r = submit_descs(this);
++ if (r)
++ dev_err(this->dev,
++ "failure submitting descs for command %d\n",
++ command);
++ }
++
++ free_descs(this);
++
++ post_command(this, command);
++}
++
++/*
++ * when using RS ECC, the NAND controller flags an error when reading an
++ * erased page. however, there are special characters at certain offsets when
++ * we read the erased page. we check here if the page is really empty. if so,
++ * we replace the magic characters with 0xffs
++ */
++static bool empty_page_fixup(struct qcom_nandc_data *this, u8 *data_buf)
++{
++ struct mtd_info *mtd = &this->mtd;
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int cwperpage = ecc->steps;
++ u8 orig1[MAX_NUM_STEPS], orig2[MAX_NUM_STEPS];
++ int i, j;
++
++ /* if BCH is enabled, HW will take care of detecting erased pages */
++ if (this->bch_enabled || !this->use_ecc)
++ return false;
++
++ for (i = 0; i < cwperpage; i++) {
++ u8 *empty1, *empty2;
++ __le32 flash_status = le32_to_cpu(this->reg_read_buf[3 * i]);
++
++ /*
++ * an erased page flags an error in NAND_FLASH_STATUS, check if
++ * the page is erased by looking for 0x54s at offsets 3 and 175
++ * from the beginning of each codeword
++ */
++ if (!(flash_status & FS_OP_ERR))
++ break;
++
++ empty1 = &data_buf[3 + i * this->cw_data];
++ empty2 = &data_buf[175 + i * this->cw_data];
++
++ /*
++ * if the error wasn't because of an erased page, bail out and
++ * and let someone else do the error checking
++ */
++ if ((*empty1 == 0x54 && *empty2 == 0xff) ||
++ (*empty1 == 0xff && *empty2 == 0x54)) {
++ orig1[i] = *empty1;
++ orig2[i] = *empty2;
++
++ *empty1 = 0xff;
++ *empty2 = 0xff;
++ } else {
++ break;
++ }
++ }
++
++ if (i < cwperpage || memchr_inv(data_buf, 0xff, mtd->writesize))
++ goto not_empty;
++
++ /*
++ * tell the caller that the page was empty and is fixed up, so that
++ * parse_read_errors() doesn't think it's an error
++ */
++ return true;
++
++not_empty:
++ /* restore original values if not empty*/
++ for (j = 0; j < i; j++) {
++ data_buf[3 + j * this->cw_data] = orig1[j];
++ data_buf[175 + j * this->cw_data] = orig2[j];
++ }
++
++ return false;
++}
++
++struct read_stats {
++ __le32 flash;
++ __le32 buffer;
++ __le32 erased_cw;
++};
++
++/*
++ * reads back status registers set by the controller to notify page read
++ * errors. this is equivalent to what 'ecc->correct()' would do.
++ */
++static int parse_read_errors(struct qcom_nandc_data *this, bool erased_page)
++{
++ struct mtd_info *mtd = &this->mtd;
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int cwperpage = ecc->steps;
++ unsigned int max_bitflips = 0;
++ int i;
++
++ for (i = 0; i < cwperpage; i++) {
++ int stat;
++ struct read_stats *buf;
++
++ buf = (struct read_stats *) (this->reg_read_buf + 3 * i);
++
++ buf->flash = le32_to_cpu(buf->flash);
++ buf->buffer = le32_to_cpu(buf->buffer);
++ buf->erased_cw = le32_to_cpu(buf->erased_cw);
++
++ if (buf->flash & (FS_OP_ERR | FS_MPU_ERR)) {
++
++ /* ignore erased codeword errors */
++ if (this->bch_enabled) {
++ if ((buf->erased_cw & ERASED_CW) == ERASED_CW)
++ continue;
++ } else if (erased_page) {
++ continue;
++ }
++
++ if (buf->buffer & BS_UNCORRECTABLE_BIT) {
++ mtd->ecc_stats.failed++;
++ continue;
++ }
++ }
++
++ stat = buf->buffer & BS_CORRECTABLE_ERR_MSK;
++ mtd->ecc_stats.corrected += stat;
++
++ max_bitflips = max_t(unsigned int, max_bitflips, stat);
++ }
++
++ return max_bitflips;
++}
++
++/*
++ * helper to perform the actual page read operation, used by ecc->read_page()
++ * and ecc->read_oob()
++ */
++static int read_page_low(struct qcom_nandc_data *this, u8 *data_buf,
++ u8 *oob_buf)
++{
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int i, r;
++
++ /* queue cmd descs for each codeword */
++ for (i = 0; i < ecc->steps; i++) {
++ int data_size, oob_size;
++
++ if (i == (ecc->steps - 1)) {
++ data_size = ecc->size - ((ecc->steps - 1) << 2);
++ oob_size = (ecc->steps << 2) + ecc->bytes;
++ } else {
++ data_size = this->cw_data;
++ oob_size = ecc->bytes;
++ }
++
++ config_cw_read(this);
++
++ if (data_buf)
++ read_data_dma(this, FLASH_BUF_ACC, data_buf, data_size);
++
++ if (oob_buf)
++ read_data_dma(this, FLASH_BUF_ACC + data_size, oob_buf,
++ oob_size);
++
++ if (data_buf)
++ data_buf += data_size;
++ if (oob_buf)
++ oob_buf += oob_size;
++ }
++
++ r = submit_descs(this);
++ if (r)
++ dev_err(this->dev, "failure to read page/oob\n");
++
++ free_descs(this);
++
++ return r;
++}
++
++/*
++ * a helper that copies the last step/codeword of a page (containing free oob)
++ * into our local buffer
++ */
++static int copy_last_cw(struct qcom_nandc_data *this, bool use_ecc, int page)
++{
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int size;
++ int r;
++
++ clear_read_regs(this);
++
++ size = use_ecc ? this->cw_data : this->cw_size;
++
++ /* prepare a clean read buffer */
++ memset(this->data_buffer, 0xff, size);
++
++ this->use_ecc = use_ecc;
++ set_address(this, this->cw_size * (ecc->steps - 1), page);
++ update_rw_regs(this, 1, true);
++
++ config_cw_read(this);
++
++ read_data_dma(this, FLASH_BUF_ACC, this->data_buffer, size);
++
++ r = submit_descs(this);
++ if (r)
++ dev_err(this->dev, "failed to copy last codeword\n");
++
++ free_descs(this);
++
++ return r;
++}
++
++/* implements ecc->read_page() */
++static int qcom_nandc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
++ uint8_t *buf, int oob_required, int page)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ u8 *data_buf, *oob_buf = NULL;
++ bool erased_page;
++ int r;
++
++ data_buf = buf;
++ oob_buf = oob_required ? chip->oob_poi : NULL;
++
++ r = read_page_low(this, data_buf, oob_buf);
++ if (r) {
++ dev_err(this->dev, "failure to read page\n");
++ return r;
++ }
++
++ erased_page = empty_page_fixup(this, data_buf);
++
++ return parse_read_errors(this, erased_page);
++}
++
++/* implements ecc->read_oob() */
++static int qcom_nandc_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
++ int page)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int r;
++
++ clear_read_regs(this);
++
++ this->use_ecc = true;
++ set_address(this, 0, page);
++ update_rw_regs(this, ecc->steps, true);
++
++ r = read_page_low(this, NULL, chip->oob_poi);
++ if (r)
++ dev_err(this->dev, "failure to read oob\n");
++
++ return r;
++}
++
++/* implements ecc->read_oob_raw(), used to read the bad block marker flag */
++static int qcom_nandc_read_oob_raw(struct mtd_info *mtd, struct nand_chip *chip,
++ int page)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ uint8_t *oob = chip->oob_poi;
++ int start, length;
++ int r;
++
++ /*
++ * configure registers for a raw page read, the address is set to the
++ * beginning of the last codeword, we don't care about reading ecc
++ * portion of oob, just the free stuff
++ */
++ r = copy_last_cw(this, false, page);
++ if (r)
++ return r;
++
++ /*
++ * reading raw oob has 2 parts, first the bad block byte, then the
++ * actual free oob region. perform a memcpy in two steps
++ */
++ start = mtd->writesize - (this->cw_size * (ecc->steps - 1));
++ length = chip->options & NAND_BUSWIDTH_16 ? 2 : 1;
++
++ memcpy(oob, this->data_buffer + start, length);
++
++ oob += length;
++
++ start = this->cw_data - (ecc->steps << 2) + 1;
++ length = ecc->steps << 2;
++
++ memcpy(oob, this->data_buffer + start, length);
++
++ return 0;
++}
++
++/* implements ecc->write_page() */
++static int qcom_nandc_write_page(struct mtd_info *mtd, struct nand_chip *chip,
++ const uint8_t *buf, int oob_required)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ u8 *data_buf, *oob_buf;
++ int i, r = 0;
++
++ clear_read_regs(this);
++
++ data_buf = (u8 *) buf;
++ oob_buf = chip->oob_poi;
++
++ this->use_ecc = true;
++ update_rw_regs(this, ecc->steps, false);
++
++ for (i = 0; i < ecc->steps; i++) {
++ int data_size, oob_size;
++
++ if (i == (ecc->steps - 1)) {
++ data_size = ecc->size - ((ecc->steps - 1) << 2);
++ oob_size = (ecc->steps << 2) + ecc->bytes;
++ } else {
++ data_size = this->cw_data;
++ oob_size = ecc->bytes;
++ }
++
++ config_cw_write_pre(this);
++ write_data_dma(this, FLASH_BUF_ACC, data_buf, data_size);
++
++ /*
++ * we don't really need to write anything to oob for the
++ * first n - 1 codewords since these oob regions just
++ * contain ecc that's written by the controller itself
++ */
++ if (i == (ecc->steps - 1))
++ write_data_dma(this, FLASH_BUF_ACC + data_size,
++ oob_buf, oob_size);
++ config_cw_write_post(this);
++
++ data_buf += data_size;
++ oob_buf += oob_size;
++ }
++
++ r = submit_descs(this);
++ if (r)
++ dev_err(this->dev, "failure to write page\n");
++
++ free_descs(this);
++
++ return r;
++}
++
++/*
++ * implements ecc->write_oob()
++ *
++ * the NAND controller cannot write only data or only oob within a codeword,
++ * since ecc is calculated for the combined codeword. we first copy the
++ * entire contents for the last codeword(data + oob), replace the old oob
++ * with the new one in chip->oob_poi, and then write the entire codeword.
++ * this read-copy-write operation results in a slight perormance loss.
++ */
++static int qcom_nandc_write_oob(struct mtd_info *mtd, struct nand_chip *chip,
++ int page)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ uint8_t *oob = chip->oob_poi;
++ int free_boff;
++ int data_size, oob_size;
++ int r, status = 0;
++
++ r = copy_last_cw(this, true, page);
++ if (r)
++ return r;
++
++ clear_read_regs(this);
++
++ /* calculate the data and oob size for the last codeword/step */
++ data_size = ecc->size - ((ecc->steps - 1) << 2);
++ oob_size = (ecc->steps << 2) + ecc->bytes;
++
++ /*
++ * the location of spare data in the oob buffer, we could also use
++ * ecc->layout.oobfree here
++ */
++ free_boff = ecc->bytes * (ecc->steps - 1);
++
++ /* override new oob content to last codeword */
++ memcpy(this->data_buffer + data_size, oob + free_boff, oob_size);
++
++ this->use_ecc = true;
++ set_address(this, this->cw_size * (ecc->steps - 1), page);
++ update_rw_regs(this, 1, false);
++
++ config_cw_write_pre(this);
++ write_data_dma(this, FLASH_BUF_ACC, this->data_buffer,
++ data_size + oob_size);
++ config_cw_write_post(this);
++
++ r = submit_descs(this);
++
++ free_descs(this);
++
++ if (r) {
++ dev_err(this->dev, "failure to write oob\n");
++ return -EIO;
++ }
++
++ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++
++ status = chip->waitfunc(mtd, chip);
++
++ return status & NAND_STATUS_FAIL ? -EIO : 0;
++}
++
++/* implements ecc->write_oob_raw(), used to write bad block marker flag */
++static int qcom_nandc_write_oob_raw(struct mtd_info *mtd,
++ struct nand_chip *chip, int page)
++{
++ struct qcom_nandc_data *this = chip->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ uint8_t *oob = chip->oob_poi;
++ int start, length;
++ int r, status = 0;
++
++ r = copy_last_cw(this, false, page);
++ if (r)
++ return r;
++
++ clear_read_regs(this);
++
++ /*
++ * writing raw oob has 2 parts, first the bad block region, then the
++ * actual free region
++ */
++ start = mtd->writesize - (this->cw_size * (ecc->steps - 1));
++ length = chip->options & NAND_BUSWIDTH_16 ? 2 : 1;
++
++ memcpy(this->data_buffer + start, oob, length);
++
++ oob += length;
++
++ start = this->cw_data - (ecc->steps << 2) + 1;
++ length = ecc->steps << 2;
++
++ memcpy(this->data_buffer + start, oob, length);
++
++ /* prepare write */
++ this->use_ecc = false;
++ set_address(this, this->cw_size * (ecc->steps - 1), page);
++ update_rw_regs(this, 1, false);
++
++ config_cw_write_pre(this);
++ write_data_dma(this, FLASH_BUF_ACC, this->data_buffer, this->cw_size);
++ config_cw_write_post(this);
++
++ r = submit_descs(this);
++
++ free_descs(this);
++
++ if (r) {
++ dev_err(this->dev, "failure to write updated oob\n");
++ return -EIO;
++ }
++
++ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++
++ status = chip->waitfunc(mtd, chip);
++
++ return status & NAND_STATUS_FAIL ? -EIO : 0;
++}
++
++/*
++ * the three functions below implement chip->read_byte(), chip->read_buf()
++ * and chip->write_buf() respectively. these aren't used for
++ * reading/writing page data, they are used for smaller data like reading
++ * id, status etc
++ */
++static uint8_t qcom_nandc_read_byte(struct mtd_info *mtd)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct qcom_nandc_data *this = chip->priv;
++ uint8_t *buf = this->data_buffer;
++ uint8_t ret = 0x0;
++
++ if (this->last_command == NAND_CMD_STATUS) {
++ ret = this->status;
++
++ this->status = NAND_STATUS_READY | NAND_STATUS_WP;
++
++ return ret;
++ }
++
++ if (this->buf_start < this->buf_count)
++ ret = buf[this->buf_start++];
++
++ return ret;
++}
++
++static void qcom_nandc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct qcom_nandc_data *this = chip->priv;
++ int real_len = min_t(size_t, len, this->buf_count - this->buf_start);
++
++ memcpy(buf, this->data_buffer + this->buf_start, real_len);
++ this->buf_start += real_len;
++}
++
++static void qcom_nandc_write_buf(struct mtd_info *mtd, const uint8_t *buf,
++ int len)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct qcom_nandc_data *this = chip->priv;
++ int real_len = min_t(size_t, len, this->buf_count - this->buf_start);
++
++ memcpy(this->data_buffer + this->buf_start, buf, real_len);
++
++ this->buf_start += real_len;
++}
++
++/* we support only one external chip for now */
++static void qcom_nandc_select_chip(struct mtd_info *mtd, int chipnr)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct qcom_nandc_data *this = chip->priv;
++
++ if (chipnr <= 0)
++ return;
++
++ dev_warn(this->dev, "invalid chip select\n");
++}
++
++/*
++ * NAND controller page layout info
++ *
++ * |-----------------------| |---------------------------------|
++ * | xx.......xx| | *********xx.......xx|
++ * | DATA xx..ECC..xx| | DATA **SPARE**xx..ECC..xx|
++ * | (516) xx.......xx| | (516-n*4) **(n*4)**xx.......xx|
++ * | xx.......xx| | *********xx.......xx|
++ * |-----------------------| |---------------------------------|
++ * codeword 1,2..n-1 codeword n
++ * <---(528/532 Bytes)----> <-------(528/532 Bytes)---------->
++ *
++ * n = number of codewords in the page
++ * . = ECC bytes
++ * * = spare bytes
++ * x = unused/reserved bytes
++ *
++ * 2K page: n = 4, spare = 16 bytes
++ * 4K page: n = 8, spare = 32 bytes
++ * 8K page: n = 16, spare = 64 bytes
++ *
++ * the qcom nand controller operates at a sub page/codeword level. each
++ * codeword is 528 and 532 bytes for 4 bit and 8 bit ECC modes respectively.
++ * the number of ECC bytes vary based on the ECC strength and the bus width.
++ *
++ * the first n - 1 codewords contains 516 bytes of user data, the remaining
++ * 12/16 bytes consist of ECC and reserved data. The nth codeword contains
++ * both user data and spare(oobavail) bytes that sum up to 516 bytes.
++ *
++ * the layout described above is used by the controller when the ECC block is
++ * enabled. When we read a page with ECC enabled, the unused/reserved bytes are
++ * skipped and not copied to our internal buffer. therefore, the nand_ecclayout
++ * layouts defined below doesn't consider the positions occupied by the reserved
++ * bytes
++ *
++ * when the ECC block is disabled, one unused byte (or two for 16 bit bus width)
++ * in the last codeword is the position of bad block marker. the bad block
++ * marker cannot be accessed when ECC is enabled.
++ *
++ */
++
++/*
++ * Layouts for different page sizes and ecc modes. We skip the eccpos field
++ * since it isn't needed for this driver
++ */
++
++/* 2K page, 4 bit ECC */
++static struct nand_ecclayout layout_oob_64 = {
++ .eccbytes = 40,
++ .oobfree = {
++ { 30, 16 },
++ },
++};
++
++/* 4K page, 4 bit ECC, 8/16 bit bus width */
++static struct nand_ecclayout layout_oob_128 = {
++ .eccbytes = 80,
++ .oobfree = {
++ { 70, 32 },
++ },
++};
++
++/* 4K page, 8 bit ECC, 8 bit bus width */
++static struct nand_ecclayout layout_oob_224_x8 = {
++ .eccbytes = 104,
++ .oobfree = {
++ { 91, 32 },
++ },
++};
++
++/* 4K page, 8 bit ECC, 16 bit bus width */
++static struct nand_ecclayout layout_oob_224_x16 = {
++ .eccbytes = 112,
++ .oobfree = {
++ { 98, 32 },
++ },
++};
++
++/* 8K page, 4 bit ECC, 8/16 bit bus width */
++static struct nand_ecclayout layout_oob_256 = {
++ .eccbytes = 160,
++ .oobfree = {
++ { 151, 64 },
++ },
++};
++
++/*
++ * this is called before scan_ident, we do some minimal configurations so
++ * that reading ID and ONFI params work
++ */
++static void qcom_nandc_pre_init(struct qcom_nandc_data *this)
++{
++ /* kill onenand */
++ nandc_write(this, SFLASHC_BURST_CFG, 0);
++
++ /* enable ADM DMA */
++ nandc_write(this, NAND_FLASH_CHIP_SELECT, DM_EN);
++
++ /* save the original values of these registers */
++ this->cmd1 = nandc_read(this, NAND_DEV_CMD1);
++ this->vld = nandc_read(this, NAND_DEV_CMD_VLD);
++
++ /* initial status value */
++ this->status = NAND_STATUS_READY | NAND_STATUS_WP;
++}
++
++static int qcom_nandc_ecc_init(struct qcom_nandc_data *this)
++{
++ struct mtd_info *mtd = &this->mtd;
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int cwperpage;
++ bool wide_bus;
++
++ /* the nand controller fetches codewords/chunks of 512 bytes */
++ cwperpage = mtd->writesize >> 9;
++
++ ecc->strength = this->ecc_strength;
++
++ wide_bus = chip->options & NAND_BUSWIDTH_16 ? true : false;
++
++ if (ecc->strength >= 8) {
++ /* 8 bit ECC defaults to BCH ECC on all platforms */
++ ecc->bytes = wide_bus ? 14 : 13;
++ } else {
++ /*
++ * if the controller supports BCH for 4 bit ECC, the controller
++ * uses lesser bytes for ECC. If RS is used, the ECC bytes is
++ * always 10 bytes
++ */
++ if (this->ecc_modes & ECC_BCH_4BIT)
++ ecc->bytes = wide_bus ? 8 : 7;
++ else
++ ecc->bytes = 10;
++ }
++
++ /* each step consists of 512 bytes of data */
++ ecc->size = NANDC_STEP_SIZE;
++
++ ecc->read_page = qcom_nandc_read_page;
++ ecc->read_oob = qcom_nandc_read_oob;
++ ecc->write_page = qcom_nandc_write_page;
++ ecc->write_oob = qcom_nandc_write_oob;
++
++ /*
++ * the bad block marker is readable only when we read the page with ECC
++ * disabled. all the ops above run with ECC enabled. We need raw read
++ * and write function for oob in order to access bad block marker.
++ */
++ ecc->read_oob_raw = qcom_nandc_read_oob_raw;
++ ecc->write_oob_raw = qcom_nandc_write_oob_raw;
++
++ switch (mtd->oobsize) {
++ case 64:
++ ecc->layout = &layout_oob_64;
++ break;
++ case 128:
++ ecc->layout = &layout_oob_128;
++ break;
++ case 224:
++ if (wide_bus)
++ ecc->layout = &layout_oob_224_x16;
++ else
++ ecc->layout = &layout_oob_224_x8;
++ break;
++ case 256:
++ ecc->layout = &layout_oob_256;
++ break;
++ default:
++ dev_err(this->dev, "unsupported NAND device, oobsize %d\n",
++ mtd->oobsize);
++ return -ENODEV;
++ }
++
++ ecc->mode = NAND_ECC_HW;
++
++ /* enable ecc by default */
++ this->use_ecc = true;
++
++ return 0;
++}
++
++static void qcom_nandc_hw_post_init(struct qcom_nandc_data *this)
++{
++ struct mtd_info *mtd = &this->mtd;
++ struct nand_chip *chip = &this->chip;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ int cwperpage = mtd->writesize / ecc->size;
++ int spare_bytes, bad_block_byte;
++ bool wide_bus;
++ int ecc_mode = 0;
++
++ wide_bus = chip->options & NAND_BUSWIDTH_16 ? true : false;
++
++ if (ecc->strength >= 8) {
++ this->cw_size = 532;
++
++ spare_bytes = wide_bus ? 0 : 2;
++
++ this->bch_enabled = true;
++ ecc_mode = 1;
++ } else {
++ this->cw_size = 528;
++
++ if (this->ecc_modes & ECC_BCH_4BIT) {
++ spare_bytes = wide_bus ? 2 : 4;
++
++ this->bch_enabled = true;
++ ecc_mode = 0;
++ } else {
++ spare_bytes = wide_bus ? 0 : 1;
++ }
++ }
++
++ /*
++ * DATA_UD_BYTES varies based on whether the read/write command protects
++ * spare data with ECC too. We protect spare data by default, so we set
++ * it to main + spare data, which are 512 and 4 bytes respectively.
++ */
++ this->cw_data = 516;
++
++ bad_block_byte = mtd->writesize - this->cw_size * (cwperpage - 1) + 1;
++
++ this->cfg0 = (cwperpage - 1) << CW_PER_PAGE
++ | this->cw_data << UD_SIZE_BYTES
++ | 0 << DISABLE_STATUS_AFTER_WRITE
++ | 5 << NUM_ADDR_CYCLES
++ | ecc->bytes << ECC_PARITY_SIZE_BYTES_RS
++ | 0 << STATUS_BFR_READ
++ | 1 << SET_RD_MODE_AFTER_STATUS
++ | spare_bytes << SPARE_SIZE_BYTES;
++
++ this->cfg1 = 7 << NAND_RECOVERY_CYCLES
++ | 0 << CS_ACTIVE_BSY
++ | bad_block_byte << BAD_BLOCK_BYTE_NUM
++ | 0 << BAD_BLOCK_IN_SPARE_AREA
++ | 2 << WR_RD_BSY_GAP
++ | wide_bus << WIDE_FLASH
++ | this->bch_enabled << ENABLE_BCH_ECC;
++
++ this->cfg0_raw = (cwperpage - 1) << CW_PER_PAGE
++ | this->cw_size << UD_SIZE_BYTES
++ | 5 << NUM_ADDR_CYCLES
++ | 0 << SPARE_SIZE_BYTES;
++
++ this->cfg1_raw = 7 << NAND_RECOVERY_CYCLES
++ | 0 << CS_ACTIVE_BSY
++ | 17 << BAD_BLOCK_BYTE_NUM
++ | 1 << BAD_BLOCK_IN_SPARE_AREA
++ | 2 << WR_RD_BSY_GAP
++ | wide_bus << WIDE_FLASH
++ | 1 << DEV0_CFG1_ECC_DISABLE;
++
++ this->ecc_bch_cfg = this->bch_enabled << ECC_CFG_ECC_DISABLE
++ | 0 << ECC_SW_RESET
++ | this->cw_data << ECC_NUM_DATA_BYTES
++ | 1 << ECC_FORCE_CLK_OPEN
++ | ecc_mode << ECC_MODE
++ | ecc->bytes << ECC_PARITY_SIZE_BYTES_BCH;
++
++ this->ecc_buf_cfg = 0x203 << NUM_STEPS;
++
++ this->clrflashstatus = FS_READY_BSY_N;
++ this->clrreadstatus = 0xc0;
++
++ dev_dbg(this->dev,
++ "cfg0 %x cfg1 %x ecc_buf_cfg %x ecc_bch cfg %x cw_size %d cw_data %d strength %d parity_bytes %d steps %d\n",
++ this->cfg0, this->cfg1, this->ecc_buf_cfg,
++ this->ecc_bch_cfg, this->cw_size, this->cw_data,
++ ecc->strength, ecc->bytes, cwperpage);
++}
++
++static int qcom_nandc_alloc(struct qcom_nandc_data *this)
++{
++ int r;
++
++ r = dma_set_coherent_mask(this->dev, DMA_BIT_MASK(32));
++ if (r) {
++ dev_err(this->dev, "failed to set DMA mask\n");
++ return r;
++ }
++
++ /*
++ * we use the internal buffer for reading ONFI params, reading small
++ * data like ID and status, and preforming read-copy-write operations
++ * when writing to a codeword partially. 532 is the maximum possible
++ * size of a codeword for our nand controller
++ */
++ this->buf_size = 532;
++
++ this->data_buffer = devm_kzalloc(this->dev, this->buf_size, GFP_KERNEL);
++ if (!this->data_buffer)
++ return -ENOMEM;
++
++ this->regs = devm_kzalloc(this->dev, sizeof(*this->regs), GFP_KERNEL);
++ if (!this->regs)
++ return -ENOMEM;
++
++ this->reg_read_buf = devm_kzalloc(this->dev,
++ MAX_REG_RD * sizeof(*this->reg_read_buf),
++ GFP_KERNEL);
++ if (!this->reg_read_buf)
++ return -ENOMEM;
++
++ INIT_LIST_HEAD(&this->list);
++
++ this->chan = dma_request_slave_channel(this->dev, "rxtx");
++ if (!this->chan) {
++ dev_err(this->dev, "failed to request slave channel\n");
++ return -ENODEV;
++ }
++
++ return 0;
++}
++
++static void qcom_nandc_unalloc(struct qcom_nandc_data *this)
++{
++ dma_release_channel(this->chan);
++}
++
++static int qcom_nandc_init(struct qcom_nandc_data *this)
++{
++ struct mtd_info *mtd = &this->mtd;
++ struct nand_chip *chip = &this->chip;
++ struct device_node *np = this->dev->of_node;
++ struct mtd_part_parser_data ppdata = { .of_node = np };
++ int r;
++
++ mtd->priv = chip;
++ mtd->name = "qcom-nandc";
++ mtd->owner = THIS_MODULE;
++
++ chip->priv = this;
++
++ chip->cmdfunc = qcom_nandc_command;
++ chip->select_chip = qcom_nandc_select_chip;
++ chip->read_byte = qcom_nandc_read_byte;
++ chip->read_buf = qcom_nandc_read_buf;
++ chip->write_buf = qcom_nandc_write_buf;
++
++ chip->options |= NAND_NO_SUBPAGE_WRITE | NAND_USE_BOUNCE_BUFFER;
++ if (this->bus_width == 16)
++ chip->options |= NAND_BUSWIDTH_16;
++
++ chip->bbt_options = NAND_BBT_ACCESS_BBM_RAW;
++ if (of_get_nand_on_flash_bbt(np))
++ chip->bbt_options = NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
++
++ qcom_nandc_pre_init(this);
++
++ r = nand_scan_ident(mtd, 1, NULL);
++ if (r)
++ return r;
++
++ r = qcom_nandc_ecc_init(this);
++ if (r)
++ return r;
++
++ qcom_nandc_hw_post_init(this);
++
++ r = nand_scan_tail(mtd);
++ if (r)
++ return r;
++
++ return mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
++}
++
++static int qcom_nandc_parse_dt(struct platform_device *pdev)
++{
++ struct qcom_nandc_data *this = platform_get_drvdata(pdev);
++ struct device_node *np = this->dev->of_node;
++ int r;
++
++ this->ecc_strength = of_get_nand_ecc_strength(np);
++ if (this->ecc_strength < 0) {
++ dev_warn(this->dev,
++ "incorrect ecc strength, setting to 4 bits/step\n");
++ this->ecc_strength = 4;
++ }
++
++ this->bus_width = of_get_nand_bus_width(np);
++ if (this->bus_width < 0) {
++ dev_warn(this->dev, "incorrect bus width, setting to 8\n");
++ this->bus_width = 8;
++ }
++
++ r = of_property_read_u32(np, "qcom,cmd-crci", &this->cmd_crci);
++ if (r) {
++ dev_err(this->dev, "command CRCI unspecified\n");
++ return r;
++ }
++
++ r = of_property_read_u32(np, "qcom,data-crci", &this->data_crci);
++ if (r) {
++ dev_err(this->dev, "data CRCI unspecified\n");
++ return r;
++ }
++
++ return 0;
++}
++
++static int qcom_nandc_probe(struct platform_device *pdev)
++{
++ struct qcom_nandc_data *this;
++ const struct of_device_id *match;
++ int r;
++
++ this = devm_kzalloc(&pdev->dev, sizeof(*this), GFP_KERNEL);
++ if (!this)
++ return -ENOMEM;
++
++ platform_set_drvdata(pdev, this);
++
++ this->pdev = pdev;
++ this->dev = &pdev->dev;
++
++ match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);
++ if (!match) {
++ dev_err(&pdev->dev, "failed to match device\n");
++ return -ENODEV;
++ }
++
++ if (!match->data) {
++ dev_err(&pdev->dev, "failed to get device data\n");
++ return -ENODEV;
++ }
++
++ this->ecc_modes = (u32) match->data;
++
++ this->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ this->base = devm_ioremap_resource(&pdev->dev, this->res);
++ if (IS_ERR(this->base))
++ return PTR_ERR(this->base);
++
++ this->core_clk = devm_clk_get(&pdev->dev, "core");
++ if (IS_ERR(this->core_clk))
++ return PTR_ERR(this->core_clk);
++
++ this->aon_clk = devm_clk_get(&pdev->dev, "aon");
++ if (IS_ERR(this->aon_clk))
++ return PTR_ERR(this->aon_clk);
++
++ r = qcom_nandc_parse_dt(pdev);
++ if (r)
++ return r;
++
++ r = qcom_nandc_alloc(this);
++ if (r)
++ return r;
++
++ r = clk_prepare_enable(this->core_clk);
++ if (r)
++ goto err_core_clk;
++
++ r = clk_prepare_enable(this->aon_clk);
++ if (r)
++ goto err_aon_clk;
++
++ r = qcom_nandc_init(this);
++ if (r)
++ goto err_init;
++
++ return 0;
++
++err_init:
++ clk_disable_unprepare(this->aon_clk);
++err_aon_clk:
++ clk_disable_unprepare(this->core_clk);
++err_core_clk:
++ qcom_nandc_unalloc(this);
++
++ return r;
++}
++
++static int qcom_nandc_remove(struct platform_device *pdev)
++{
++ struct qcom_nandc_data *this = platform_get_drvdata(pdev);
++
++ qcom_nandc_unalloc(this);
++
++ clk_disable_unprepare(this->aon_clk);
++ clk_disable_unprepare(this->core_clk);
++
++ return 0;
++}
++
++#define EBI2_NANDC_ECC_MODES (ECC_RS_4BIT | ECC_BCH_8BIT)
++
++/*
++ * data will hold a struct pointer containing more differences once we support
++ * more IPs
++ */
++static const struct of_device_id qcom_nandc_of_match[] = {
++ { .compatible = "qcom,ebi2-nandc",
++ .data = (void *) EBI2_NANDC_ECC_MODES,
++ },
++ {}
++};
++MODULE_DEVICE_TABLE(of, qcom_nandc_of_match);
++
++static struct platform_driver qcom_nandc_driver = {
++ .driver = {
++ .name = "qcom-nandc",
++ .of_match_table = qcom_nandc_of_match,
++ },
++ .probe = qcom_nandc_probe,
++ .remove = qcom_nandc_remove,
++};
++module_platform_driver(qcom_nandc_driver);
++
++MODULE_AUTHOR("Archit Taneja <architt@codeaurora.org>");
++MODULE_DESCRIPTION("Qualcomm NAND Controller driver");
++MODULE_LICENSE("GPL v2");
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -50,5 +50,6 @@ obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740
+ obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi-nand/
+ obj-$(CONFIG_MTD_NAND_XWAY) += xway_nand.o
+ obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH) += bcm47xxnflash/
++obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nandc.o
+
+ nand-objs := nand_base.o nand_bbt.o nand_timings.o
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,3/5] dt/bindings: qcom_nandc: Add DT bindings
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927141
+Message-Id: <1438578498-32254-4-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+ cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+ sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+ Archit Taneja <architt@codeaurora.org>, devicetree@vger.kernel.org
+Date: Mon, 3 Aug 2015 10:38:16 +0530
+
+Add DT bindings document for the Qualcomm NAND controller driver.
+
+Cc: devicetree@vger.kernel.org
+
+v3:
+- Don't use '0x' when specifying nand controller address space
+- Add optional property for on-flash bbt usage
+
+Acked-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+.../devicetree/bindings/mtd/qcom_nandc.txt | 49 ++++++++++++++++++++++
+ 1 file changed, 49 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+@@ -0,0 +1,49 @@
++* Qualcomm NAND controller
++
++Required properties:
++- compatible: should be "qcom,ebi2-nand" for IPQ806x
++- reg: MMIO address range
++- clocks: must contain core clock and always on clock
++- clock-names: must contain "core" for the core clock and "aon" for the
++ always on clock
++- dmas: DMA specifier, consisting of a phandle to the ADM DMA
++ controller node and the channel number to be used for
++ NAND. Refer to dma.txt and qcom_adm.txt for more details
++- dma-names: must be "rxtx"
++- qcom,cmd-crci: must contain the ADM command type CRCI block instance
++ number specified for the NAND controller on the given
++ platform
++- qcom,data-crci: must contain the ADM data type CRCI block instance
++ number specified for the NAND controller on the given
++ platform
++
++Optional properties:
++- nand-bus-width: bus width. Must be 8 or 16. If not present, 8 is chosen
++ as default
++
++- nand-ecc-strength: number of bits to correct per ECC step. Must be 4 or 8
++ bits. If not present, 4 is chosen as default
++- nand-on-flash-bbt: Create/use on-flash bad block table
++
++The device tree may optionally contain sub-nodes describing partitions of the
++address space. See partition.txt for more detail.
++
++Example:
++
++nand@1ac00000 {
++ compatible = "qcom,ebi2-nandc";
++ reg = <0x1ac00000 0x800>;
++
++ clocks = <&gcc EBI2_CLK>,
++ <&gcc EBI2_AON_CLK>;
++ clock-names = "core", "aon";
++
++ dmas = <&adm_dma 3>;
++ dma-names = "rxtx";
++ qcom,cmd-crci = <15>;
++ qcom,data-crci = <3>;
++
++ partition@0 {
++ ...
++ };
++};
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,4/5] arm: qcom: dts: Add NAND controller node for ipq806x
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927121
+Message-Id: <1438578498-32254-5-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+ cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+ sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+ Archit Taneja <architt@codeaurora.org>, devicetree@vger.kernel.org
+Date: Mon, 3 Aug 2015 10:38:17 +0530
+
+The nand controller in IPQ806x is of the 'EBI2 type'. Use the corresponding
+compatible string.
+
+Cc: devicetree@vger.kernel.org
+
+Reviewed-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+arch/arm/boot/dts/qcom-ipq8064.dtsi | 15 +++++++++++++++
+ 1 file changed, 15 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -725,6 +725,22 @@
+ status = "disabled";
+ };
+
++ nand@1ac00000 {
++ compatible = "qcom,ebi2-nandc";
++ reg = <0x1ac00000 0x800>;
++
++ clocks = <&gcc EBI2_CLK>,
++ <&gcc EBI2_AON_CLK>;
++ clock-names = "core", "aon";
++
++ dmas = <&adm_dma 3>;
++ dma-names = "rxtx";
++ qcom,cmd-crci = <15>;
++ qcom,data-crci = <3>;
++
++ status = "disabled";
++ };
++
+ };
+
+ sfpb_mutex: sfpb-mutex {
--- /dev/null
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,5/5] arm: qcom: dts: Enable NAND node on IPQ8064 AP148 platform
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927091
+Message-Id: <1438578498-32254-6-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+ cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+ sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+ Archit Taneja <architt@codeaurora.org>, devicetree@vger.kernel.org
+Date: Mon, 3 Aug 2015 10:38:18 +0530
+
+Enable the NAND controller node on the AP148 platform. Provide pinmux
+information.
+
+Cc: devicetree@vger.kernel.org
+
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 36 ++++++++++++++++++++++++++++++++
+ 1 file changed, 36 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -43,6 +43,31 @@
+ bias-none;
+ };
+ };
++
++ nand_pins: nand_pins {
++ mux {
++ pins = "gpio34", "gpio35", "gpio36",
++ "gpio37", "gpio38", "gpio39",
++ "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ function = "nand";
++ drive-strength = <10>;
++ bias-disable;
++ };
++
++ pullups {
++ pins = "gpio39";
++ bias-pull-up;
++ };
++
++ hold {
++ pins = "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ bias-bus-hold;
++ };
++ };
+ };
+
+ gsbi@16300000 {
+@@ -125,5 +150,19 @@
+ status = "ok";
+ phy-tx0-term-offset = <7>;
+ };
++
++ nand@1ac00000 {
++ status = "ok";
++
++ pinctrl-0 = <&nand_pins>;
++ pinctrl-names = "default";
++
++ nand-ecc-strength = <4>;
++ nand-bus-width = <8>;
++ };
+ };
+ };
++
++&adm_dma {
++ status = "ok";
++};
--- /dev/null
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -159,6 +159,8 @@
+
+ nand-ecc-strength = <4>;
+ nand-bus-width = <8>;
++
++ linux,part-probe = "qcom-smem";
+ };
+ };
+ };
--- /dev/null
+From b12e230f09d4481424e6a5d7e2ae566b6954e83f Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Wed, 29 Apr 2015 15:21:46 -0700
+Subject: [PATCH] HACK: arch: arm: force ZRELADDR on arch-qcom
+
+ARCH_QCOM is using the ARCH_MULTIPLATFORM option, as now recommended
+on most ARM architectures. This automatically calculate ZRELADDR by
+masking PHYS_OFFSET with 0xf8000000.
+
+However, on IPQ806x, the first ~20MB of RAM is reserved for the hardware
+network accelerators, and the bootloader removes this section from the
+layout passed from the ATAGS (when used).
+
+For newer bootloader, when DT is used, this is not a problem, we just
+reserve this memory in the device tree. But if the bootloader doesn't
+have DT support, then ATAGS have to be used. In this case, the ARM
+decompressor will position the kernel in this low mem, which will not be
+in the RAM section mapped by the bootloader, which means the kernel will
+freeze in the middle of the boot process trying to map the memory.
+
+As a work around, this patch allows disabling AUTO_ZRELADDR when
+ARCH_QCOM is selected. It makes the zImage usage possible on bootloaders
+which don't support device-tree, which is the case on certain early
+IPQ806x based designs.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/Kconfig | 2 +-
+ arch/arm/Makefile | 2 ++
+ arch/arm/mach-qcom/Makefile.boot | 1 +
+ 3 files changed, 4 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/mach-qcom/Makefile.boot
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -311,7 +311,7 @@ config ARCH_MULTIPLATFORM
+ select ARCH_WANT_OPTIONAL_GPIOLIB
+ select ARM_HAS_SG_CHAIN
+ select ARM_PATCH_PHYS_VIRT
+- select AUTO_ZRELADDR
++ select AUTO_ZRELADDR if !ARCH_QCOM
+ select CLKSRC_OF
+ select COMMON_CLK
+ select GENERIC_CLOCKEVENTS
+--- a/arch/arm/Makefile
++++ b/arch/arm/Makefile
+@@ -248,9 +248,11 @@ MACHINE := arch/arm/mach-$(word 1,$(mac
+ else
+ MACHINE :=
+ endif
++ifeq ($(CONFIG_ARCH_QCOM),)
+ ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
+ MACHINE :=
+ endif
++endif
+
+ machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
+ platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
+--- /dev/null
++++ b/arch/arm/mach-qcom/Makefile.boot
+@@ -0,0 +1 @@
++zreladdr-y+= 0x42208000
--- /dev/null
+From 7e77aa188a7a7c4391856a9e5ef5ef58f769e679 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Sun, 9 Aug 2015 13:02:38 +0200
+Subject: [PATCH] ARM: qcom: add Netgear Nighthawk X4 R7500 device tree
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+---
+ arch/arm/boot/dts/Makefile | 1 +
+ arch/arm/boot/dts/qcom-ipq8064-r7500.dts | 370 +++++++++++++++++++++++++++++++
+ 2 files changed, 371 insertions(+)
+ create mode 100644 arch/arm/boot/dts/qcom-ipq8064-r7500.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -361,6 +361,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+ qcom-apq8084-mtp.dtb \
+ qcom-ipq8064-ap148.dtb \
+ qcom-ipq8064-db149.dtb \
++ qcom-ipq8064-r7500.dtb \
+ qcom-msm8660-surf.dtb \
+ qcom-msm8960-cdp.dtb \
+ qcom-msm8974-sony-xperia-honami.dtb
+--- /dev/null
++++ b/arch/arm/boot/dts/qcom-ipq8064-r7500.dts
+@@ -0,0 +1,342 @@
++#include "qcom-ipq8064-v1.0.dtsi"
++
++#include <dt-bindings/input/input.h>
++
++/ {
++ model = "Netgear Nighthawk X4 R7500";
++ compatible = "netgear,r7500", "qcom,ipq8064";
++
++ memory@0 {
++ reg = <0x42000000 0xe000000>;
++ device_type = "memory";
++ };
++
++ reserved-memory {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ ranges;
++ rsvd@41200000 {
++ reg = <0x41200000 0x300000>;
++ no-map;
++ };
++ };
++
++ aliases {
++ serial0 = &uart4;
++ mdio-gpio0 = &mdio0;
++ };
++
++ chosen {
++ bootargs = "rootfstype=squashfs noinitrd";
++ linux,stdout-path = "serial0:115200n8";
++ };
++
++ soc {
++ pinmux@800000 {
++ i2c4_pins: i2c4_pinmux {
++ pins = "gpio12", "gpio13";
++ function = "gsbi4";
++ bias-disable;
++ };
++
++ nand_pins: nand_pins {
++ mux {
++ pins = "gpio34", "gpio35", "gpio36",
++ "gpio37", "gpio38", "gpio39",
++ "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ function = "nand";
++ drive-strength = <10>;
++ bias-disable;
++ };
++ pullups {
++ pins = "gpio39";
++ bias-pull-up;
++ };
++ hold {
++ pins = "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ bias-bus-hold;
++ };
++ };
++
++ mdio0_pins: mdio0_pins {
++ mux {
++ pins = "gpio0", "gpio1";
++ function = "gpio";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++
++ rgmii2_pins: rgmii2_pins {
++ mux {
++ pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
++ "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
++ function = "rgmii2";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++ };
++
++ gsbi@16300000 {
++ qcom,mode = <GSBI_PROT_I2C_UART>;
++ status = "ok";
++ serial@16340000 {
++ status = "ok";
++ };
++ /*
++ * The i2c device on gsbi4 should not be enabled.
++ * On ipq806x designs gsbi4 i2c is meant for exclusive
++ * RPM usage. Turning this on in kernel manifests as
++ * i2c failure for the RPM.
++ */
++ };
++
++ sata-phy@1b400000 {
++ status = "ok";
++ };
++
++ sata@29000000 {
++ status = "ok";
++ };
++
++ phy@100f8800 { /* USB3 port 1 HS phy */
++ status = "ok";
++ };
++
++ phy@100f8830 { /* USB3 port 1 SS phy */
++ status = "ok";
++ };
++
++ phy@110f8800 { /* USB3 port 0 HS phy */
++ status = "ok";
++ };
++
++ phy@110f8830 { /* USB3 port 0 SS phy */
++ status = "ok";
++ };
++
++ usb30@0 {
++ status = "ok";
++ };
++
++ usb30@1 {
++ status = "ok";
++ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ };
++
++ nand@1ac00000 {
++ status = "ok";
++
++ pinctrl-0 = <&nand_pins>;
++ pinctrl-names = "default";
++
++ nand-ecc-strength = <4>;
++ nand-bus-width = <8>;
++
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ qcadata@0 {
++ label = "qcadata";
++ reg = <0x0000000 0x0c80000>;
++ read-only;
++ };
++
++ APPSBL@c80000 {
++ label = "APPSBL";
++ reg = <0x0c80000 0x0500000>;
++ read-only;
++ };
++
++ APPSBLENV@1180000 {
++ label = "APPSBLENV";
++ reg = <0x1180000 0x0080000>;
++ read-only;
++ };
++
++ art: art@1200000 {
++ label = "art";
++ reg = <0x1200000 0x0140000>;
++ read-only;
++ };
++
++ kernel@1340000 {
++ label = "kernel";
++ reg = <0x1340000 0x0200000>;
++ };
++
++ ubi@1540000 {
++ label = "ubi";
++ reg = <0x1540000 0x1800000>;
++ };
++
++ netgear@2d40000 {
++ label = "netgear";
++ reg = <0x2d40000 0x0c00000>;
++ read-only;
++ };
++
++ reserve@3940000 {
++ label = "reserve";
++ reg = <0x3940000 0x46c0000>;
++ read-only;
++ };
++
++ firmware@1340000 {
++ label = "firmware";
++ reg = <0x1340000 0x1a00000>;
++ };
++
++ };
++
++ mdio0: mdio {
++ compatible = "virtual,mdio-gpio";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++ pinctrl-0 = <&mdio0_pins>;
++ pinctrl-names = "default";
++
++ phy0: ethernet-phy@0 {
++ device_type = "ethernet-phy";
++ reg = <0>;
++ qca,ar8327-initvals = <
++ 0x00004 0x7600000 /* PAD0_MODE */
++ 0x00008 0x1000000 /* PAD5_MODE */
++ 0x0000c 0x80 /* PAD6_MODE */
++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
++ 0x000e0 0xc74164de /* SGMII_CTRL */
++ 0x0007c 0x4e /* PORT0_STATUS */
++ 0x00094 0x4e /* PORT6_STATUS */
++ >;
++ };
++
++ phy4: ethernet-phy@4 {
++ device_type = "ethernet-phy";
++ reg = <4>;
++ };
++ };
++
++ gmac1: ethernet@37200000 {
++ status = "ok";
++ phy-mode = "rgmii";
++ qcom,id = <1>;
++
++ pinctrl-0 = <&rgmii2_pins>;
++ pinctrl-names = "default";
++
++ mtd-mac-address = <&art 6>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++
++ gmac2: ethernet@37400000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <2>;
++
++ mtd-mac-address = <&art 0>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++ };
++
++ gpio-keys {
++ compatible = "gpio-keys";
++
++ wifi {
++ label = "wifi";
++ gpios = <&qcom_pinmux 6 1>;
++ linux,code = <KEY_WLAN>;
++ };
++
++ reset {
++ label = "reset";
++ gpios = <&qcom_pinmux 54 1>;
++ linux,code = <KEY_RESTART>;
++ };
++
++ wps {
++ label = "wps";
++ gpios = <&qcom_pinmux 65 1>;
++ linux,code = <KEY_WPS_BUTTON>;
++ };
++ };
++
++ gpio-leds {
++ compatible = "gpio-leds";
++
++ usb1 {
++ label = "r7500:amber:usb1";
++ gpios = <&qcom_pinmux 7 0>;
++ };
++
++ usb3 {
++ label = "r7500:amber:usb3";
++ gpios = <&qcom_pinmux 8 0>;
++ };
++
++ status {
++ label = "r7500:amber:status";
++ gpios = <&qcom_pinmux 9 0>;
++ };
++
++ internet {
++ label = "r7500:white:internet";
++ gpios = <&qcom_pinmux 22 0>;
++ };
++
++ wan {
++ label = "r7500:white:wan";
++ gpios = <&qcom_pinmux 23 0>;
++ };
++
++ wps {
++ label = "r7500:white:wps";
++ gpios = <&qcom_pinmux 24 0>;
++ };
++
++ esata {
++ label = "r7500:white:esata";
++ gpios = <&qcom_pinmux 26 0>;
++ };
++
++ power {
++ label = "r7500:white:power";
++ gpios = <&qcom_pinmux 53 0>;
++ default-state = "on";
++ };
++
++ rfkill {
++ label = "r7500:white:rfkill";
++ gpios = <&qcom_pinmux 64 0>;
++ };
++
++ wifi5g {
++ label = "r7500:white:wifi5g";
++ gpios = <&qcom_pinmux 67 0>;
++ };
++ };
++};
++
++&adm_dma {
++ status = "ok";
++};
--- /dev/null
+--- a/drivers/mtd/qcom_smem_part.c
++++ b/drivers/mtd/qcom_smem_part.c
+@@ -192,6 +192,10 @@ static int parse_qcom_smem_partitions(st
+ m_part->size = le32_to_cpu(s_part->size) * (*smem_blksz);
+ m_part->offset = le32_to_cpu(s_part->start) * (*smem_blksz);
+
++ /* "rootfs" conflicts with OpenWrt auto mounting */
++ if (mtd_type_is_nand(master) && !strcmp(m_part->name, "rootfs"))
++ m_part->name = "ubi";
++
+ /*
+ * The last SMEM partition may have its size marked as
+ * something like 0xffffffff, which means "until the end of the
--- /dev/null
+From 2fbb18f85826a9ba308fedb2cf90d3a661a39fd7 Mon Sep 17 00:00:00 2001
+From: Stephen Boyd <sboyd@codeaurora.org>
+Date: Fri, 27 Mar 2015 00:16:14 -0700
+Subject: [PATCH] clk: qcom: Add support for NSS/GMAC clocks and resets
+
+Add the NSS/GMAC clocks and the TCM clock and NSS resets.
+
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+---
+ drivers/clk/qcom/gcc-ipq806x.c | 594 ++++++++++++++++++++++++++-
+ drivers/clk/qcom/gcc-ipq806x.c.rej | 50 +++
+ include/dt-bindings/clock/qcom,gcc-ipq806x.h | 2 +
+ include/dt-bindings/reset/qcom,gcc-ipq806x.h | 43 ++
+ 4 files changed, 688 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/clk/qcom/gcc-ipq806x.c.rej
+
+--- a/drivers/clk/qcom/gcc-ipq806x.c
++++ b/drivers/clk/qcom/gcc-ipq806x.c
+@@ -209,11 +209,46 @@ static struct clk_regmap pll14_vote = {
+ },
+ };
+
++#define NSS_PLL_RATE(f, _l, _m, _n, i) \
++ { \
++ .freq = f, \
++ .l = _l, \
++ .m = _m, \
++ .n = _n, \
++ .ibits = i, \
++ }
++
++static struct pll_freq_tbl pll18_freq_tbl[] = {
++ NSS_PLL_RATE(550000000, 44, 0, 1, 0x01495625),
++ NSS_PLL_RATE(733000000, 58, 16, 25, 0x014b5625),
++};
++
++static struct clk_pll pll18 = {
++ .l_reg = 0x31a4,
++ .m_reg = 0x31a8,
++ .n_reg = 0x31ac,
++ .config_reg = 0x31b4,
++ .mode_reg = 0x31a0,
++ .status_reg = 0x31b8,
++ .status_bit = 16,
++ .post_div_shift = 16,
++ .post_div_width = 1,
++ .freq_tbl = pll18_freq_tbl,
++ .clkr.hw.init = &(struct clk_init_data){
++ .name = "pll18",
++ .parent_names = (const char *[]){ "pxo" },
++ .num_parents = 1,
++ .ops = &clk_pll_ops,
++ },
++};
++
+ #define P_PXO 0
+ #define P_PLL8 1
+ #define P_PLL3 1
+ #define P_PLL0 2
+ #define P_CXO 2
++#define P_PLL14 3
++#define P_PLL18 4
+
+ static const u8 gcc_pxo_pll8_map[] = {
+ [P_PXO] = 0,
+@@ -264,6 +299,22 @@ static const char *gcc_pxo_pll8_pll0_map
+ "pll0_vote",
+ };
+
++static const u8 gcc_pxo_pll8_pll14_pll18_pll0_map[] = {
++ [P_PXO] = 0 ,
++ [P_PLL8] = 4,
++ [P_PLL0] = 2,
++ [P_PLL14] = 5,
++ [P_PLL18] = 1,
++};
++
++static const char *gcc_pxo_pll8_pll14_pll18_pll0[] = {
++ "pxo",
++ "pll8_vote",
++ "pll0_vote",
++ "pll14",
++ "pll18",
++};
++
+ static struct freq_tbl clk_tbl_gsbi_uart[] = {
+ { 1843200, P_PLL8, 2, 6, 625 },
+ { 3686400, P_PLL8, 2, 12, 625 },
+@@ -2269,6 +2320,472 @@ static struct clk_branch ebi2_aon_clk =
+ },
+ };
+
++static const struct freq_tbl clk_tbl_gmac[] = {
++ { 133000000, P_PLL0, 1, 50, 301 },
++ { 266000000, P_PLL0, 1, 127, 382 },
++ { }
++};
++
++static struct clk_dyn_rcg gmac_core1_src = {
++ .ns_reg[0] = 0x3cac,
++ .ns_reg[1] = 0x3cb0,
++ .md_reg[0] = 0x3ca4,
++ .md_reg[1] = 0x3ca8,
++ .bank_reg = 0x3ca0,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_gmac,
++ .clkr = {
++ .enable_reg = 0x3ca0,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core1_src",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ },
++ },
++};
++
++static struct clk_branch gmac_core1_clk = {
++ .halt_reg = 0x3c20,
++ .halt_bit = 4,
++ .hwcg_reg = 0x3cb4,
++ .hwcg_bit = 6,
++ .clkr = {
++ .enable_reg = 0x3cb4,
++ .enable_mask = BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core1_clk",
++ .parent_names = (const char *[]){
++ "gmac_core1_src",
++ },
++ .num_parents = 1,
++ .ops = &clk_branch_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ },
++ },
++};
++
++static struct clk_dyn_rcg gmac_core2_src = {
++ .ns_reg[0] = 0x3ccc,
++ .ns_reg[1] = 0x3cd0,
++ .md_reg[0] = 0x3cc4,
++ .md_reg[1] = 0x3cc8,
++ .bank_reg = 0x3ca0,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_gmac,
++ .clkr = {
++ .enable_reg = 0x3cc0,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core2_src",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ },
++ },
++};
++
++static struct clk_branch gmac_core2_clk = {
++ .halt_reg = 0x3c20,
++ .halt_bit = 5,
++ .hwcg_reg = 0x3cd4,
++ .hwcg_bit = 6,
++ .clkr = {
++ .enable_reg = 0x3cd4,
++ .enable_mask = BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core2_clk",
++ .parent_names = (const char *[]){
++ "gmac_core2_src",
++ },
++ .num_parents = 1,
++ .ops = &clk_branch_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ },
++ },
++};
++
++static struct clk_dyn_rcg gmac_core3_src = {
++ .ns_reg[0] = 0x3cec,
++ .ns_reg[1] = 0x3cf0,
++ .md_reg[0] = 0x3ce4,
++ .md_reg[1] = 0x3ce8,
++ .bank_reg = 0x3ce0,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_gmac,
++ .clkr = {
++ .enable_reg = 0x3ce0,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core3_src",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ },
++ },
++};
++
++static struct clk_branch gmac_core3_clk = {
++ .halt_reg = 0x3c20,
++ .halt_bit = 6,
++ .hwcg_reg = 0x3cf4,
++ .hwcg_bit = 6,
++ .clkr = {
++ .enable_reg = 0x3cf4,
++ .enable_mask = BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core3_clk",
++ .parent_names = (const char *[]){
++ "gmac_core3_src",
++ },
++ .num_parents = 1,
++ .ops = &clk_branch_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ },
++ },
++};
++
++static struct clk_dyn_rcg gmac_core4_src = {
++ .ns_reg[0] = 0x3d0c,
++ .ns_reg[1] = 0x3d10,
++ .md_reg[0] = 0x3d04,
++ .md_reg[1] = 0x3d08,
++ .bank_reg = 0x3d00,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_gmac,
++ .clkr = {
++ .enable_reg = 0x3d00,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core4_src",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ },
++ },
++};
++
++static struct clk_branch gmac_core4_clk = {
++ .halt_reg = 0x3c20,
++ .halt_bit = 7,
++ .hwcg_reg = 0x3d14,
++ .hwcg_bit = 6,
++ .clkr = {
++ .enable_reg = 0x3d14,
++ .enable_mask = BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "gmac_core4_clk",
++ .parent_names = (const char *[]){
++ "gmac_core4_src",
++ },
++ .num_parents = 1,
++ .ops = &clk_branch_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ },
++ },
++};
++
++static const struct freq_tbl clk_tbl_nss_tcm[] = {
++ { 266000000, P_PLL0, 3, 0, 0 },
++ { 400000000, P_PLL0, 2, 0, 0 },
++ { }
++};
++
++static struct clk_dyn_rcg nss_tcm_src = {
++ .ns_reg[0] = 0x3dc4,
++ .ns_reg[1] = 0x3dc8,
++ .bank_reg = 0x3dc0,
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 4,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 4,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_nss_tcm,
++ .clkr = {
++ .enable_reg = 0x3dc0,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "nss_tcm_src",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ },
++ },
++};
++
++static struct clk_branch nss_tcm_clk = {
++ .halt_reg = 0x3c20,
++ .halt_bit = 14,
++ .clkr = {
++ .enable_reg = 0x3dd0,
++ .enable_mask = BIT(6) | BIT(4),
++ .hw.init = &(struct clk_init_data){
++ .name = "nss_tcm_clk",
++ .parent_names = (const char *[]){
++ "nss_tcm_src",
++ },
++ .num_parents = 1,
++ .ops = &clk_branch_ops,
++ .flags = CLK_SET_RATE_PARENT,
++ },
++ },
++};
++
++static const struct freq_tbl clk_tbl_nss[] = {
++ { 110000000, P_PLL18, 1, 1, 5 },
++ { 275000000, P_PLL18, 2, 0, 0 },
++ { 550000000, P_PLL18, 1, 0, 0 },
++ { 733000000, P_PLL18, 1, 0, 0 },
++ { }
++};
++
++static struct clk_dyn_rcg ubi32_core1_src_clk = {
++ .ns_reg[0] = 0x3d2c,
++ .ns_reg[1] = 0x3d30,
++ .md_reg[0] = 0x3d24,
++ .md_reg[1] = 0x3d28,
++ .bank_reg = 0x3d20,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_nss,
++ .clkr = {
++ .enable_reg = 0x3d20,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "ubi32_core1_src_clk",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ .flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
++ },
++ },
++};
++
++static struct clk_dyn_rcg ubi32_core2_src_clk = {
++ .ns_reg[0] = 0x3d4c,
++ .ns_reg[1] = 0x3d50,
++ .md_reg[0] = 0x3d44,
++ .md_reg[1] = 0x3d48,
++ .bank_reg = 0x3d40,
++ .mn[0] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .mn[1] = {
++ .mnctr_en_bit = 8,
++ .mnctr_reset_bit = 7,
++ .mnctr_mode_shift = 5,
++ .n_val_shift = 16,
++ .m_val_shift = 16,
++ .width = 8,
++ },
++ .s[0] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .s[1] = {
++ .src_sel_shift = 0,
++ .parent_map = gcc_pxo_pll8_pll14_pll18_pll0_map,
++ },
++ .p[0] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .p[1] = {
++ .pre_div_shift = 3,
++ .pre_div_width = 2,
++ },
++ .mux_sel_bit = 0,
++ .freq_tbl = clk_tbl_nss,
++ .clkr = {
++ .enable_reg = 0x3d40,
++ .enable_mask = BIT(1),
++ .hw.init = &(struct clk_init_data){
++ .name = "ubi32_core2_src_clk",
++ .parent_names = gcc_pxo_pll8_pll14_pll18_pll0,
++ .num_parents = 5,
++ .ops = &clk_dyn_rcg_ops,
++ .flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
++ },
++ },
++};
++
+ static struct clk_regmap *gcc_ipq806x_clks[] = {
+ [PLL0] = &pll0.clkr,
+ [PLL0_VOTE] = &pll0_vote,
+@@ -2277,6 +2794,7 @@ static struct clk_regmap *gcc_ipq806x_cl
+ [PLL8_VOTE] = &pll8_vote,
+ [PLL14] = &pll14.clkr,
+ [PLL14_VOTE] = &pll14_vote,
++ [PLL18] = &pll18.clkr,
+ [GSBI1_UART_SRC] = &gsbi1_uart_src.clkr,
+ [GSBI1_UART_CLK] = &gsbi1_uart_clk.clkr,
+ [GSBI2_UART_SRC] = &gsbi2_uart_src.clkr,
+@@ -2376,6 +2894,18 @@ static struct clk_regmap *gcc_ipq806x_cl
+ [PLL9] = &hfpll0.clkr,
+ [PLL10] = &hfpll1.clkr,
+ [PLL12] = &hfpll_l2.clkr,
++ [GMAC_CORE1_CLK_SRC] = &gmac_core1_src.clkr,
++ [GMAC_CORE1_CLK] = &gmac_core1_clk.clkr,
++ [GMAC_CORE2_CLK_SRC] = &gmac_core2_src.clkr,
++ [GMAC_CORE2_CLK] = &gmac_core2_clk.clkr,
++ [GMAC_CORE3_CLK_SRC] = &gmac_core3_src.clkr,
++ [GMAC_CORE3_CLK] = &gmac_core3_clk.clkr,
++ [GMAC_CORE4_CLK_SRC] = &gmac_core4_src.clkr,
++ [GMAC_CORE4_CLK] = &gmac_core4_clk.clkr,
++ [UBI32_CORE1_CLK_SRC] = &ubi32_core1_src_clk.clkr,
++ [UBI32_CORE2_CLK_SRC] = &ubi32_core2_src_clk.clkr,
++ [NSSTCM_CLK_SRC] = &nss_tcm_src.clkr,
++ [NSSTCM_CLK] = &nss_tcm_clk.clkr,
+ };
+
+ static const struct qcom_reset_map gcc_ipq806x_resets[] = {
+@@ -2494,6 +3024,48 @@ static const struct qcom_reset_map gcc_i
+ [USB30_1_PHY_RESET] = { 0x3b58, 0 },
+ [NSSFB0_RESET] = { 0x3b60, 6 },
+ [NSSFB1_RESET] = { 0x3b60, 7 },
++ [UBI32_CORE1_CLKRST_CLAMP_RESET] = { 0x3d3c, 3},
++ [UBI32_CORE1_CLAMP_RESET] = { 0x3d3c, 2 },
++ [UBI32_CORE1_AHB_RESET] = { 0x3d3c, 1 },
++ [UBI32_CORE1_AXI_RESET] = { 0x3d3c, 0 },
++ [UBI32_CORE2_CLKRST_CLAMP_RESET] = { 0x3d5c, 3 },
++ [UBI32_CORE2_CLAMP_RESET] = { 0x3d5c, 2 },
++ [UBI32_CORE2_AHB_RESET] = { 0x3d5c, 1 },
++ [UBI32_CORE2_AXI_RESET] = { 0x3d5c, 0 },
++ [GMAC_CORE1_RESET] = { 0x3cbc, 0 },
++ [GMAC_CORE2_RESET] = { 0x3cdc, 0 },
++ [GMAC_CORE3_RESET] = { 0x3cfc, 0 },
++ [GMAC_CORE4_RESET] = { 0x3d1c, 0 },
++ [GMAC_AHB_RESET] = { 0x3e24, 0 },
++ [NSS_CH0_RST_RX_CLK_N_RESET] = { 0x3b60, 0 },
++ [NSS_CH0_RST_TX_CLK_N_RESET] = { 0x3b60, 1 },
++ [NSS_CH0_RST_RX_125M_N_RESET] = { 0x3b60, 2 },
++ [NSS_CH0_HW_RST_RX_125M_N_RESET] = { 0x3b60, 3 },
++ [NSS_CH0_RST_TX_125M_N_RESET] = { 0x3b60, 4 },
++ [NSS_CH1_RST_RX_CLK_N_RESET] = { 0x3b60, 5 },
++ [NSS_CH1_RST_TX_CLK_N_RESET] = { 0x3b60, 6 },
++ [NSS_CH1_RST_RX_125M_N_RESET] = { 0x3b60, 7 },
++ [NSS_CH1_HW_RST_RX_125M_N_RESET] = { 0x3b60, 8 },
++ [NSS_CH1_RST_TX_125M_N_RESET] = { 0x3b60, 9 },
++ [NSS_CH2_RST_RX_CLK_N_RESET] = { 0x3b60, 10 },
++ [NSS_CH2_RST_TX_CLK_N_RESET] = { 0x3b60, 11 },
++ [NSS_CH2_RST_RX_125M_N_RESET] = { 0x3b60, 12 },
++ [NSS_CH2_HW_RST_RX_125M_N_RESET] = { 0x3b60, 13 },
++ [NSS_CH2_RST_TX_125M_N_RESET] = { 0x3b60, 14 },
++ [NSS_CH3_RST_RX_CLK_N_RESET] = { 0x3b60, 15 },
++ [NSS_CH3_RST_TX_CLK_N_RESET] = { 0x3b60, 16 },
++ [NSS_CH3_RST_RX_125M_N_RESET] = { 0x3b60, 17 },
++ [NSS_CH3_HW_RST_RX_125M_N_RESET] = { 0x3b60, 18 },
++ [NSS_CH3_RST_TX_125M_N_RESET] = { 0x3b60, 19 },
++ [NSS_RST_RX_250M_125M_N_RESET] = { 0x3b60, 20 },
++ [NSS_RST_TX_250M_125M_N_RESET] = { 0x3b60, 21 },
++ [NSS_QSGMII_TXPI_RST_N_RESET] = { 0x3b60, 22 },
++ [NSS_QSGMII_CDR_RST_N_RESET] = { 0x3b60, 23 },
++ [NSS_SGMII2_CDR_RST_N_RESET] = { 0x3b60, 24 },
++ [NSS_SGMII3_CDR_RST_N_RESET] = { 0x3b60, 25 },
++ [NSS_CAL_PRBS_RST_N_RESET] = { 0x3b60, 26 },
++ [NSS_LCKDT_RST_N_RESET] = { 0x3b60, 27 },
++ [NSS_SRDS_N_RESET] = { 0x3b60, 28 },
+ };
+
+ static const struct regmap_config gcc_ipq806x_regmap_config = {
+@@ -2522,6 +3094,8 @@ static int gcc_ipq806x_probe(struct plat
+ {
+ struct clk *clk;
+ struct device *dev = &pdev->dev;
++ struct regmap *regmap;
++ int ret;
+
+ /* Temporary until RPM clocks supported */
+ clk = clk_register_fixed_rate(dev, "cxo", NULL, CLK_IS_ROOT, 25000000);
+@@ -2532,7 +3106,25 @@ static int gcc_ipq806x_probe(struct plat
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+- return qcom_cc_probe(pdev, &gcc_ipq806x_desc);
++ ret = qcom_cc_probe(pdev, &gcc_ipq806x_desc);
++ if (ret)
++ return ret;
++
++ regmap = dev_get_regmap(dev, NULL);
++ if (!regmap)
++ return -ENODEV;
++
++ /* Setup PLL18 static bits */
++ regmap_update_bits(regmap, 0x31a4, 0xffffffc0, 0x40000400);
++ regmap_write(regmap, 0x31b0, 0x3080);
++
++ /* Set GMAC footswitch sleep/wakeup values */
++ regmap_write(regmap, 0x3cb8, 8);
++ regmap_write(regmap, 0x3cd8, 8);
++ regmap_write(regmap, 0x3cf8, 8);
++ regmap_write(regmap, 0x3d18, 8);
++
++ return 0;
+ }
+
+ static int gcc_ipq806x_remove(struct platform_device *pdev)
+--- a/include/dt-bindings/clock/qcom,gcc-ipq806x.h
++++ b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
+@@ -290,5 +290,7 @@
+ #define UBI32_CORE1_CLK 279
+ #define UBI32_CORE2_CLK 280
+ #define EBI2_AON_CLK 281
++#define NSSTCM_CLK_SRC 282
++#define NSSTCM_CLK 283
+
+ #endif
+--- a/include/dt-bindings/reset/qcom,gcc-ipq806x.h
++++ b/include/dt-bindings/reset/qcom,gcc-ipq806x.h
+@@ -129,4 +129,47 @@
+ #define USB30_1_PHY_RESET 112
+ #define NSSFB0_RESET 113
+ #define NSSFB1_RESET 114
++#define UBI32_CORE1_CLKRST_CLAMP_RESET 115
++#define UBI32_CORE1_CLAMP_RESET 116
++#define UBI32_CORE1_AHB_RESET 117
++#define UBI32_CORE1_AXI_RESET 118
++#define UBI32_CORE2_CLKRST_CLAMP_RESET 119
++#define UBI32_CORE2_CLAMP_RESET 120
++#define UBI32_CORE2_AHB_RESET 121
++#define UBI32_CORE2_AXI_RESET 122
++#define GMAC_CORE1_RESET 123
++#define GMAC_CORE2_RESET 124
++#define GMAC_CORE3_RESET 125
++#define GMAC_CORE4_RESET 126
++#define GMAC_AHB_RESET 127
++#define NSS_CH0_RST_RX_CLK_N_RESET 128
++#define NSS_CH0_RST_TX_CLK_N_RESET 129
++#define NSS_CH0_RST_RX_125M_N_RESET 130
++#define NSS_CH0_HW_RST_RX_125M_N_RESET 131
++#define NSS_CH0_RST_TX_125M_N_RESET 132
++#define NSS_CH1_RST_RX_CLK_N_RESET 133
++#define NSS_CH1_RST_TX_CLK_N_RESET 134
++#define NSS_CH1_RST_RX_125M_N_RESET 135
++#define NSS_CH1_HW_RST_RX_125M_N_RESET 136
++#define NSS_CH1_RST_TX_125M_N_RESET 137
++#define NSS_CH2_RST_RX_CLK_N_RESET 138
++#define NSS_CH2_RST_TX_CLK_N_RESET 139
++#define NSS_CH2_RST_RX_125M_N_RESET 140
++#define NSS_CH2_HW_RST_RX_125M_N_RESET 141
++#define NSS_CH2_RST_TX_125M_N_RESET 142
++#define NSS_CH3_RST_RX_CLK_N_RESET 143
++#define NSS_CH3_RST_TX_CLK_N_RESET 144
++#define NSS_CH3_RST_RX_125M_N_RESET 145
++#define NSS_CH3_HW_RST_RX_125M_N_RESET 146
++#define NSS_CH3_RST_TX_125M_N_RESET 147
++#define NSS_RST_RX_250M_125M_N_RESET 148
++#define NSS_RST_TX_250M_125M_N_RESET 149
++#define NSS_QSGMII_TXPI_RST_N_RESET 150
++#define NSS_QSGMII_CDR_RST_N_RESET 151
++#define NSS_SGMII2_CDR_RST_N_RESET 152
++#define NSS_SGMII3_CDR_RST_N_RESET 153
++#define NSS_CAL_PRBS_RST_N_RESET 154
++#define NSS_LCKDT_RST_N_RESET 155
++#define NSS_SRDS_N_RESET 156
++
+ #endif
--- /dev/null
+--- a/include/linux/stmmac.h
++++ b/include/linux/stmmac.h
+@@ -99,6 +99,7 @@ struct plat_stmmacenet_data {
+ int phy_addr;
+ int interface;
+ struct stmmac_mdio_bus_data *mdio_bus_data;
++ struct device_node *phy_node;
+ struct stmmac_dma_cfg *dma_cfg;
+ int clk_csr;
+ int has_gmac;
+@@ -114,32 +115,12 @@ struct plat_stmmacenet_data {
+ int maxmtu;
+ int multicast_filter_bins;
+ int unicast_filter_entries;
++ int tx_fifo_size;
++ int rx_fifo_size;
+ void (*fix_mac_speed)(void *priv, unsigned int speed);
+ void (*bus_setup)(void __iomem *ioaddr);
+- void *(*setup)(struct platform_device *pdev);
+- void (*free)(struct platform_device *pdev, void *priv);
+ int (*init)(struct platform_device *pdev, void *priv);
+ void (*exit)(struct platform_device *pdev, void *priv);
+- void *custom_cfg;
+- void *custom_data;
+ void *bsp_priv;
+ };
+-
+-/* of_data for SoC glue layer device tree bindings */
+-
+-struct stmmac_of_data {
+- int has_gmac;
+- int enh_desc;
+- int tx_coe;
+- int rx_coe;
+- int bugged_jumbo;
+- int pmt;
+- int riwt_off;
+- void (*fix_mac_speed)(void *priv, unsigned int speed);
+- void (*bus_setup)(void __iomem *ioaddr);
+- void *(*setup)(struct platform_device *pdev);
+- void (*free)(struct platform_device *pdev, void *priv);
+- int (*init)(struct platform_device *pdev, void *priv);
+- void (*exit)(struct platform_device *pdev, void *priv);
+-};
+ #endif
+--- a/drivers/net/ethernet/stmicro/Kconfig
++++ b/drivers/net/ethernet/stmicro/Kconfig
+@@ -7,9 +7,7 @@ config NET_VENDOR_STMICRO
+ default y
+ depends on HAS_IOMEM
+ ---help---
+- If you have a network (Ethernet) card belonging to this class, say Y
+- and read the Ethernet-HOWTO, available from
+- <http://www.tldp.org/docs.html#howto>.
++ If you have a network (Ethernet) card belonging to this class, say Y.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
++++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
+@@ -14,21 +14,54 @@ config STMMAC_ETH
+ if STMMAC_ETH
+
+ config STMMAC_PLATFORM
+- bool "STMMAC Platform bus support"
++ tristate "STMMAC Platform bus support"
+ depends on STMMAC_ETH
++ select MFD_SYSCON
+ default y
+ ---help---
+- This selects the platform specific bus support for
+- the stmmac device driver. This is the driver used
+- on many embedded STM platforms based on ARM and SuperH
+- processors.
++ This selects the platform specific bus support for the stmmac driver.
++ This is the driver used on several SoCs:
++ STi, Allwinner, Amlogic Meson, Altera SOCFPGA.
++
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
+
++if STMMAC_PLATFORM
++
++config DWMAC_GENERIC
++ tristate "Generic driver for DWMAC"
++ default STMMAC_PLATFORM
++ ---help---
++ Generic DWMAC driver for platforms that don't require any
++ platform specific code to function or is using platform
++ data for setup.
++
++config DWMAC_IPQ806X
++ tristate "QCA IPQ806x DWMAC support"
++ default ARCH_QCOM
++ depends on OF
++ select MFD_SYSCON
++ help
++ Support for QCA IPQ806X DWMAC Ethernet.
++
++ This selects the IPQ806x SoC glue layer support for the stmmac
++ device driver. This driver does not use any of the hardware
++ acceleration features available on this SoC. Network devices
++ will behave like standard non-accelerated ethernet interfaces.
++
++config DWMAC_LPC18XX
++ tristate "NXP LPC18xx/43xx DWMAC support"
++ default ARCH_LPC18XX
++ depends on OF
++ select MFD_SYSCON
++ ---help---
++ Support for NXP LPC18xx/43xx DWMAC Ethernet.
++
+ config DWMAC_MESON
+- bool "Amlogic Meson dwmac support"
+- depends on STMMAC_PLATFORM && ARCH_MESON
++ tristate "Amlogic Meson dwmac support"
++ default ARCH_MESON
++ depends on OF
+ help
+ Support for Ethernet controller on Amlogic Meson SoCs.
+
+@@ -36,9 +69,22 @@ config DWMAC_MESON
+ the stmmac device driver. This driver is used for Meson6 and
+ Meson8 SoCs.
+
++config DWMAC_ROCKCHIP
++ tristate "Rockchip dwmac support"
++ default ARCH_ROCKCHIP
++ depends on OF
++ select MFD_SYSCON
++ help
++ Support for Ethernet controller on Rockchip RK3288 SoC.
++
++ This selects the Rockchip RK3288 SoC glue layer support for
++ the stmmac device driver.
++
+ config DWMAC_SOCFPGA
+- bool "SOCFPGA dwmac support"
+- depends on STMMAC_PLATFORM && MFD_SYSCON && (ARCH_SOCFPGA || COMPILE_TEST)
++ tristate "SOCFPGA dwmac support"
++ default ARCH_SOCFPGA
++ depends on OF
++ select MFD_SYSCON
+ help
+ Support for ethernet controller on Altera SOCFPGA
+
+@@ -46,21 +92,11 @@ config DWMAC_SOCFPGA
+ for the stmmac device driver. This driver is used for
+ arria5 and cyclone5 FPGA SoCs.
+
+-config DWMAC_SUNXI
+- bool "Allwinner GMAC support"
+- depends on STMMAC_PLATFORM && ARCH_SUNXI
+- default y
+- ---help---
+- Support for Allwinner A20/A31 GMAC ethernet controllers.
+-
+- This selects Allwinner SoC glue layer support for the
+- stmmac device driver. This driver is used for A20/A31
+- GMAC ethernet controller.
+-
+ config DWMAC_STI
+- bool "STi GMAC support"
+- depends on STMMAC_PLATFORM && ARCH_STI
+- default y
++ tristate "STi GMAC support"
++ default ARCH_STI
++ depends on OF
++ select MFD_SYSCON
+ ---help---
+ Support for ethernet controller on STi SOCs.
+
+@@ -68,8 +104,20 @@ config DWMAC_STI
+ device driver. This driver is used on for the STi series
+ SOCs GMAC ethernet controller.
+
++config DWMAC_SUNXI
++ tristate "Allwinner GMAC support"
++ default ARCH_SUNXI
++ depends on OF
++ ---help---
++ Support for Allwinner A20/A31 GMAC ethernet controllers.
++
++ This selects Allwinner SoC glue layer support for the
++ stmmac device driver. This driver is used for A20/A31
++ GMAC ethernet controller.
++endif
++
+ config STMMAC_PCI
+- bool "STMMAC PCI bus support"
++ tristate "STMMAC PCI bus support"
+ depends on STMMAC_ETH && PCI
+ ---help---
+ This is to select the Synopsys DWMAC available on PCI devices,
+@@ -79,22 +127,4 @@ config STMMAC_PCI
+ D1215994A VIRTEX FPGA board.
+
+ If unsure, say N.
+-
+-config STMMAC_DEBUG_FS
+- bool "Enable monitoring via sysFS "
+- default n
+- depends on STMMAC_ETH && DEBUG_FS
+- ---help---
+- The stmmac entry in /sys reports DMA TX/RX rings
+- or (if supported) the HW cap register.
+-
+-config STMMAC_DA
+- bool "STMMAC DMA arbitration scheme"
+- default n
+- ---help---
+- Selecting this option, rx has priority over Tx (only for Giga
+- Ethernet device).
+- By default, the DMA arbitration scheme is based on Round-robin
+- (rx:tx priority is 1:1).
+-
+ endif
+--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
++++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
+@@ -1,11 +1,20 @@
+ obj-$(CONFIG_STMMAC_ETH) += stmmac.o
+-stmmac-$(CONFIG_STMMAC_PLATFORM) += stmmac_platform.o
+-stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o
+-stmmac-$(CONFIG_DWMAC_MESON) += dwmac-meson.o
+-stmmac-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
+-stmmac-$(CONFIG_DWMAC_STI) += dwmac-sti.o
+-stmmac-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o
+ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o \
+- chain_mode.o dwmac_lib.o dwmac1000_core.o dwmac1000_dma.o \
+- dwmac100_core.o dwmac100_dma.o enh_desc.o norm_desc.o \
++ chain_mode.o dwmac_lib.o dwmac1000_core.o dwmac1000_dma.o \
++ dwmac100_core.o dwmac100_dma.o enh_desc.o norm_desc.o \
+ mmc_core.o stmmac_hwtstamp.o stmmac_ptp.o $(stmmac-y)
++
++# Ordering matters. Generic driver must be last.
++obj-$(CONFIG_STMMAC_PLATFORM) += stmmac-platform.o
++obj-$(CONFIG_DWMAC_IPQ806X) += dwmac-ipq806x.o
++obj-$(CONFIG_DWMAC_LPC18XX) += dwmac-lpc18xx.o
++obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o
++obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o
++obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o
++obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o
++obj-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
++obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
++stmmac-platform-objs:= stmmac_platform.o
++
++obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
++stmmac-pci-objs:= stmmac_pci.o
+--- a/drivers/net/ethernet/stmicro/stmmac/common.h
++++ b/drivers/net/ethernet/stmicro/stmmac/common.h
+@@ -44,6 +44,7 @@
+ #undef FRAME_FILTER_DEBUG
+ /* #define FRAME_FILTER_DEBUG */
+
++/* Extra statistic and debug information exposed by ethtool */
+ struct stmmac_extra_stats {
+ /* Transmit errors */
+ unsigned long tx_underflow ____cacheline_aligned;
+@@ -149,7 +150,7 @@ struct stmmac_extra_stats {
+ #define MAC_CSR_H_FRQ_MASK 0x20
+
+ #define HASH_TABLE_SIZE 64
+-#define PAUSE_TIME 0x200
++#define PAUSE_TIME 0xffff
+
+ /* Flow Control defines */
+ #define FLOW_OFF 0
+@@ -220,6 +221,7 @@ enum dma_irq_status {
+ handle_tx = 0x8,
+ };
+
++/* EEE and LPI defines */
+ #define CORE_IRQ_TX_PATH_IN_LPI_MODE (1 << 0)
+ #define CORE_IRQ_TX_PATH_EXIT_LPI_MODE (1 << 1)
+ #define CORE_IRQ_RX_PATH_IN_LPI_MODE (1 << 2)
+@@ -229,6 +231,7 @@ enum dma_irq_status {
+ #define CORE_PCS_LINK_STATUS (1 << 6)
+ #define CORE_RGMII_IRQ (1 << 7)
+
++/* Physical Coding Sublayer */
+ struct rgmii_adv {
+ unsigned int pause;
+ unsigned int duplex;
+@@ -294,6 +297,7 @@ struct dma_features {
+
+ #define JUMBO_LEN 9000
+
++/* Descriptors helpers */
+ struct stmmac_desc_ops {
+ /* DMA RX descriptor ring initialization */
+ void (*init_rx_desc) (struct dma_desc *p, int disable_rx_ic, int mode,
+@@ -341,6 +345,10 @@ struct stmmac_desc_ops {
+ int (*get_rx_timestamp_status) (void *desc, u32 ats);
+ };
+
++extern const struct stmmac_desc_ops enh_desc_ops;
++extern const struct stmmac_desc_ops ndesc_ops;
++
++/* Specific DMA helpers */
+ struct stmmac_dma_ops {
+ /* DMA core initialization */
+ int (*init) (void __iomem *ioaddr, int pbl, int fb, int mb,
+@@ -349,7 +357,8 @@ struct stmmac_dma_ops {
+ void (*dump_regs) (void __iomem *ioaddr);
+ /* Set tx/rx threshold in the csr6 register
+ * An invalid value enables the store-and-forward mode */
+- void (*dma_mode) (void __iomem *ioaddr, int txmode, int rxmode);
++ void (*dma_mode)(void __iomem *ioaddr, int txmode, int rxmode,
++ int rxfifosz);
+ /* To track extra statistic (if supported) */
+ void (*dma_diagnostic_fr) (void *data, struct stmmac_extra_stats *x,
+ void __iomem *ioaddr);
+@@ -370,6 +379,7 @@ struct stmmac_dma_ops {
+
+ struct mac_device_info;
+
++/* Helpers to program the MAC core */
+ struct stmmac_ops {
+ /* MAC core initialization */
+ void (*core_init)(struct mac_device_info *hw, int mtu);
+@@ -400,6 +410,7 @@ struct stmmac_ops {
+ void (*get_adv)(struct mac_device_info *hw, struct rgmii_adv *adv);
+ };
+
++/* PTP and HW Timer helpers */
+ struct stmmac_hwtimestamp {
+ void (*config_hw_tstamping) (void __iomem *ioaddr, u32 data);
+ void (*config_sub_second_increment) (void __iomem *ioaddr);
+@@ -410,6 +421,8 @@ struct stmmac_hwtimestamp {
+ u64(*get_systime) (void __iomem *ioaddr);
+ };
+
++extern const struct stmmac_hwtimestamp stmmac_ptp;
++
+ struct mac_link {
+ int port;
+ int duplex;
+@@ -421,6 +434,7 @@ struct mii_regs {
+ unsigned int data; /* MII Data */
+ };
+
++/* Helpers to manage the descriptors for chain and ring modes */
+ struct stmmac_mode_ops {
+ void (*init) (void *des, dma_addr_t phy_addr, unsigned int size,
+ unsigned int extend_desc);
+--- /dev/null
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
+@@ -0,0 +1,81 @@
++/*
++ * Generic DWMAC platform driver
++ *
++ * Copyright (C) 2007-2011 STMicroelectronics Ltd
++ * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
++ *
++ * This file is licensed under the terms of the GNU General Public
++ * License version 2. This program is licensed "as is" without any
++ * warranty of any kind, whether express or implied.
++ */
++
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++
++#include "stmmac.h"
++#include "stmmac_platform.h"
++
++static int dwmac_generic_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ int ret;
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ if (pdev->dev.of_node) {
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat)) {
++ dev_err(&pdev->dev, "dt configuration failed\n");
++ return PTR_ERR(plat_dat);
++ }
++ } else {
++ plat_dat = dev_get_platdata(&pdev->dev);
++ if (!plat_dat) {
++ dev_err(&pdev->dev, "no platform data provided\n");
++ return -EINVAL;
++ }
++
++ /* Set default value for multicast hash bins */
++ plat_dat->multicast_filter_bins = HASH_TABLE_SIZE;
++
++ /* Set default value for unicast filter entries */
++ plat_dat->unicast_filter_entries = 1;
++ }
++
++ /* Custom initialisation (if needed) */
++ if (plat_dat->init) {
++ ret = plat_dat->init(pdev, plat_dat->bsp_priv);
++ if (ret)
++ return ret;
++ }
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id dwmac_generic_match[] = {
++ { .compatible = "st,spear600-gmac"},
++ { .compatible = "snps,dwmac-3.610"},
++ { .compatible = "snps,dwmac-3.70a"},
++ { .compatible = "snps,dwmac-3.710"},
++ { .compatible = "snps,dwmac"},
++ { }
++};
++MODULE_DEVICE_TABLE(of, dwmac_generic_match);
++
++static struct platform_driver dwmac_generic_driver = {
++ .probe = dwmac_generic_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = STMMAC_RESOURCE_NAME,
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = of_match_ptr(dwmac_generic_match),
++ },
++};
++module_platform_driver(dwmac_generic_driver);
++
++MODULE_DESCRIPTION("Generic dwmac driver");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+@@ -0,0 +1,373 @@
++/*
++ * Qualcomm Atheros IPQ806x GMAC glue layer
++ *
++ * Copyright (C) 2015 The Linux Foundation
++ *
++ * Permission to use, copy, modify, and/or distribute this software for any
++ * purpose with or without fee is hereby granted, provided that the above
++ * copyright notice and this permission notice appear in all copies.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
++ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
++ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
++ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
++ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
++ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
++ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ */
++
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/phy.h>
++#include <linux/regmap.h>
++#include <linux/clk.h>
++#include <linux/reset.h>
++#include <linux/of_net.h>
++#include <linux/mfd/syscon.h>
++#include <linux/stmmac.h>
++#include <linux/of_mdio.h>
++#include <linux/module.h>
++
++#include "stmmac_platform.h"
++
++#define NSS_COMMON_CLK_GATE 0x8
++#define NSS_COMMON_CLK_GATE_PTP_EN(x) BIT(0x10 + x)
++#define NSS_COMMON_CLK_GATE_RGMII_RX_EN(x) BIT(0x9 + (x * 2))
++#define NSS_COMMON_CLK_GATE_RGMII_TX_EN(x) BIT(0x8 + (x * 2))
++#define NSS_COMMON_CLK_GATE_GMII_RX_EN(x) BIT(0x4 + x)
++#define NSS_COMMON_CLK_GATE_GMII_TX_EN(x) BIT(0x0 + x)
++
++#define NSS_COMMON_CLK_DIV0 0xC
++#define NSS_COMMON_CLK_DIV_OFFSET(x) (x * 8)
++#define NSS_COMMON_CLK_DIV_MASK 0x7f
++
++#define NSS_COMMON_CLK_SRC_CTRL 0x14
++#define NSS_COMMON_CLK_SRC_CTRL_OFFSET(x) (x)
++/* Mode is coded on 1 bit but is different depending on the MAC ID:
++ * MAC0: QSGMII=0 RGMII=1
++ * MAC1: QSGMII=0 SGMII=0 RGMII=1
++ * MAC2 & MAC3: QSGMII=0 SGMII=1
++ */
++#define NSS_COMMON_CLK_SRC_CTRL_RGMII(x) 1
++#define NSS_COMMON_CLK_SRC_CTRL_SGMII(x) ((x >= 2) ? 1 : 0)
++
++#define NSS_COMMON_MACSEC_CTL 0x28
++#define NSS_COMMON_MACSEC_CTL_EXT_BYPASS_EN(x) (1 << x)
++
++#define NSS_COMMON_GMAC_CTL(x) (0x30 + (x * 4))
++#define NSS_COMMON_GMAC_CTL_CSYS_REQ BIT(19)
++#define NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL BIT(16)
++#define NSS_COMMON_GMAC_CTL_IFG_LIMIT_OFFSET 8
++#define NSS_COMMON_GMAC_CTL_IFG_OFFSET 0
++#define NSS_COMMON_GMAC_CTL_IFG_MASK 0x3f
++
++#define NSS_COMMON_CLK_DIV_RGMII_1000 1
++#define NSS_COMMON_CLK_DIV_RGMII_100 9
++#define NSS_COMMON_CLK_DIV_RGMII_10 99
++#define NSS_COMMON_CLK_DIV_SGMII_1000 0
++#define NSS_COMMON_CLK_DIV_SGMII_100 4
++#define NSS_COMMON_CLK_DIV_SGMII_10 49
++
++#define QSGMII_PCS_MODE_CTL 0x68
++#define QSGMII_PCS_MODE_CTL_AUTONEG_EN(x) BIT((x * 8) + 7)
++
++#define QSGMII_PCS_CAL_LCKDT_CTL 0x120
++#define QSGMII_PCS_CAL_LCKDT_CTL_RST BIT(19)
++
++/* Only GMAC1/2/3 support SGMII and their CTL register are not contiguous */
++#define QSGMII_PHY_SGMII_CTL(x) ((x == 1) ? 0x134 : \
++ (0x13c + (4 * (x - 2))))
++#define QSGMII_PHY_CDR_EN BIT(0)
++#define QSGMII_PHY_RX_FRONT_EN BIT(1)
++#define QSGMII_PHY_RX_SIGNAL_DETECT_EN BIT(2)
++#define QSGMII_PHY_TX_DRIVER_EN BIT(3)
++#define QSGMII_PHY_QSGMII_EN BIT(7)
++#define QSGMII_PHY_PHASE_LOOP_GAIN_OFFSET 12
++#define QSGMII_PHY_PHASE_LOOP_GAIN_MASK 0x7
++#define QSGMII_PHY_RX_DC_BIAS_OFFSET 18
++#define QSGMII_PHY_RX_DC_BIAS_MASK 0x3
++#define QSGMII_PHY_RX_INPUT_EQU_OFFSET 20
++#define QSGMII_PHY_RX_INPUT_EQU_MASK 0x3
++#define QSGMII_PHY_CDR_PI_SLEW_OFFSET 22
++#define QSGMII_PHY_CDR_PI_SLEW_MASK 0x3
++#define QSGMII_PHY_TX_DRV_AMP_OFFSET 28
++#define QSGMII_PHY_TX_DRV_AMP_MASK 0xf
++
++struct ipq806x_gmac {
++ struct platform_device *pdev;
++ struct regmap *nss_common;
++ struct regmap *qsgmii_csr;
++ uint32_t id;
++ struct clk *core_clk;
++ phy_interface_t phy_mode;
++};
++
++static int get_clk_div_sgmii(struct ipq806x_gmac *gmac, unsigned int speed)
++{
++ struct device *dev = &gmac->pdev->dev;
++ int div;
++
++ switch (speed) {
++ case SPEED_1000:
++ div = NSS_COMMON_CLK_DIV_SGMII_1000;
++ break;
++
++ case SPEED_100:
++ div = NSS_COMMON_CLK_DIV_SGMII_100;
++ break;
++
++ case SPEED_10:
++ div = NSS_COMMON_CLK_DIV_SGMII_10;
++ break;
++
++ default:
++ dev_err(dev, "Speed %dMbps not supported in SGMII\n", speed);
++ return -EINVAL;
++ }
++
++ return div;
++}
++
++static int get_clk_div_rgmii(struct ipq806x_gmac *gmac, unsigned int speed)
++{
++ struct device *dev = &gmac->pdev->dev;
++ int div;
++
++ switch (speed) {
++ case SPEED_1000:
++ div = NSS_COMMON_CLK_DIV_RGMII_1000;
++ break;
++
++ case SPEED_100:
++ div = NSS_COMMON_CLK_DIV_RGMII_100;
++ break;
++
++ case SPEED_10:
++ div = NSS_COMMON_CLK_DIV_RGMII_10;
++ break;
++
++ default:
++ dev_err(dev, "Speed %dMbps not supported in RGMII\n", speed);
++ return -EINVAL;
++ }
++
++ return div;
++}
++
++static int ipq806x_gmac_set_speed(struct ipq806x_gmac *gmac, unsigned int speed)
++{
++ uint32_t clk_bits, val;
++ int div;
++
++ switch (gmac->phy_mode) {
++ case PHY_INTERFACE_MODE_RGMII:
++ div = get_clk_div_rgmii(gmac, speed);
++ clk_bits = NSS_COMMON_CLK_GATE_RGMII_RX_EN(gmac->id) |
++ NSS_COMMON_CLK_GATE_RGMII_TX_EN(gmac->id);
++ break;
++
++ case PHY_INTERFACE_MODE_SGMII:
++ div = get_clk_div_sgmii(gmac, speed);
++ clk_bits = NSS_COMMON_CLK_GATE_GMII_RX_EN(gmac->id) |
++ NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id);
++ break;
++
++ default:
++ dev_err(&gmac->pdev->dev, "Unsupported PHY mode: \"%s\"\n",
++ phy_modes(gmac->phy_mode));
++ return -EINVAL;
++ }
++
++ /* Disable the clocks */
++ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val);
++ val &= ~clk_bits;
++ regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val);
++
++ /* Set the divider */
++ regmap_read(gmac->nss_common, NSS_COMMON_CLK_DIV0, &val);
++ val &= ~(NSS_COMMON_CLK_DIV_MASK
++ << NSS_COMMON_CLK_DIV_OFFSET(gmac->id));
++ val |= div << NSS_COMMON_CLK_DIV_OFFSET(gmac->id);
++ regmap_write(gmac->nss_common, NSS_COMMON_CLK_DIV0, val);
++
++ /* Enable the clock back */
++ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val);
++ val |= clk_bits;
++ regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val);
++
++ return 0;
++}
++
++static void *ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
++{
++ struct device *dev = &gmac->pdev->dev;
++
++ gmac->phy_mode = of_get_phy_mode(dev->of_node);
++ if (gmac->phy_mode < 0) {
++ dev_err(dev, "missing phy mode property\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ if (of_property_read_u32(dev->of_node, "qcom,id", &gmac->id) < 0) {
++ dev_err(dev, "missing qcom id property\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ /* The GMACs are called 1 to 4 in the documentation, but to simplify the
++ * code and keep it consistent with the Linux convention, we'll number
++ * them from 0 to 3 here.
++ */
++ if (gmac->id < 0 || gmac->id > 3) {
++ dev_err(dev, "invalid gmac id\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ gmac->core_clk = devm_clk_get(dev, "stmmaceth");
++ if (IS_ERR(gmac->core_clk)) {
++ dev_err(dev, "missing stmmaceth clk property\n");
++ return gmac->core_clk;
++ }
++ clk_set_rate(gmac->core_clk, 266000000);
++
++ /* Setup the register map for the nss common registers */
++ gmac->nss_common = syscon_regmap_lookup_by_phandle(dev->of_node,
++ "qcom,nss-common");
++ if (IS_ERR(gmac->nss_common)) {
++ dev_err(dev, "missing nss-common node\n");
++ return gmac->nss_common;
++ }
++
++ /* Setup the register map for the qsgmii csr registers */
++ gmac->qsgmii_csr = syscon_regmap_lookup_by_phandle(dev->of_node,
++ "qcom,qsgmii-csr");
++ if (IS_ERR(gmac->qsgmii_csr)) {
++ dev_err(dev, "missing qsgmii-csr node\n");
++ return gmac->qsgmii_csr;
++ }
++
++ return NULL;
++}
++
++static void ipq806x_gmac_fix_mac_speed(void *priv, unsigned int speed)
++{
++ struct ipq806x_gmac *gmac = priv;
++
++ ipq806x_gmac_set_speed(gmac, speed);
++}
++
++static int ipq806x_gmac_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ struct device *dev = &pdev->dev;
++ struct ipq806x_gmac *gmac;
++ int val;
++ void *err;
++
++ val = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (val)
++ return val;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
++ gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL);
++ if (!gmac)
++ return -ENOMEM;
++
++ gmac->pdev = pdev;
++
++ err = ipq806x_gmac_of_parse(gmac);
++ if (IS_ERR(err)) {
++ dev_err(dev, "device tree parsing error\n");
++ return PTR_ERR(err);
++ }
++
++ regmap_write(gmac->qsgmii_csr, QSGMII_PCS_CAL_LCKDT_CTL,
++ QSGMII_PCS_CAL_LCKDT_CTL_RST);
++
++ /* Inter frame gap is set to 12 */
++ val = 12 << NSS_COMMON_GMAC_CTL_IFG_OFFSET |
++ 12 << NSS_COMMON_GMAC_CTL_IFG_LIMIT_OFFSET;
++ /* We also initiate an AXI low power exit request */
++ val |= NSS_COMMON_GMAC_CTL_CSYS_REQ;
++ switch (gmac->phy_mode) {
++ case PHY_INTERFACE_MODE_RGMII:
++ val |= NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL;
++ break;
++ case PHY_INTERFACE_MODE_SGMII:
++ val &= ~NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL;
++ break;
++ default:
++ dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",
++ phy_modes(gmac->phy_mode));
++ return -EINVAL;
++ }
++ regmap_write(gmac->nss_common, NSS_COMMON_GMAC_CTL(gmac->id), val);
++
++ /* Configure the clock src according to the mode */
++ regmap_read(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, &val);
++ val &= ~(1 << NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id));
++ switch (gmac->phy_mode) {
++ case PHY_INTERFACE_MODE_RGMII:
++ val |= NSS_COMMON_CLK_SRC_CTRL_RGMII(gmac->id) <<
++ NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id);
++ break;
++ case PHY_INTERFACE_MODE_SGMII:
++ val |= NSS_COMMON_CLK_SRC_CTRL_SGMII(gmac->id) <<
++ NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id);
++ break;
++ default:
++ dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",
++ phy_modes(gmac->phy_mode));
++ return -EINVAL;
++ }
++ regmap_write(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, val);
++
++ /* Enable PTP clock */
++ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val);
++ val |= NSS_COMMON_CLK_GATE_PTP_EN(gmac->id);
++ regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val);
++
++ if (gmac->phy_mode == PHY_INTERFACE_MODE_SGMII) {
++ regmap_write(gmac->qsgmii_csr, QSGMII_PHY_SGMII_CTL(gmac->id),
++ QSGMII_PHY_CDR_EN |
++ QSGMII_PHY_RX_FRONT_EN |
++ QSGMII_PHY_RX_SIGNAL_DETECT_EN |
++ QSGMII_PHY_TX_DRIVER_EN |
++ QSGMII_PHY_QSGMII_EN |
++ 0x4 << QSGMII_PHY_PHASE_LOOP_GAIN_OFFSET |
++ 0x3 << QSGMII_PHY_RX_DC_BIAS_OFFSET |
++ 0x1 << QSGMII_PHY_RX_INPUT_EQU_OFFSET |
++ 0x2 << QSGMII_PHY_CDR_PI_SLEW_OFFSET |
++ 0xC << QSGMII_PHY_TX_DRV_AMP_OFFSET);
++ }
++
++ plat_dat->has_gmac = true;
++ plat_dat->bsp_priv = gmac;
++ plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id ipq806x_gmac_dwmac_match[] = {
++ { .compatible = "qcom,ipq806x-gmac" },
++ { }
++};
++MODULE_DEVICE_TABLE(of, ipq806x_gmac_dwmac_match);
++
++static struct platform_driver ipq806x_gmac_dwmac_driver = {
++ .probe = ipq806x_gmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "ipq806x-gmac-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = ipq806x_gmac_dwmac_match,
++ },
++};
++module_platform_driver(ipq806x_gmac_dwmac_driver);
++
++MODULE_AUTHOR("Mathieu Olivari <mathieu@codeaurora.org>");
++MODULE_DESCRIPTION("Qualcomm Atheros IPQ806x DWMAC specific glue layer");
++MODULE_LICENSE("Dual BSD/GPL");
+--- /dev/null
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
+@@ -0,0 +1,86 @@
++/*
++ * DWMAC glue for NXP LPC18xx/LPC43xx Ethernet
++ *
++ * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
++ *
++ * This file is licensed under the terms of the GNU General Public
++ * License version 2. This program is licensed "as is" without any
++ * warranty of any kind, whether express or implied.
++ */
++
++#include <linux/mfd/syscon.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_net.h>
++#include <linux/phy.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/stmmac.h>
++
++#include "stmmac_platform.h"
++
++/* Register defines for CREG syscon */
++#define LPC18XX_CREG_CREG6 0x12c
++# define LPC18XX_CREG_CREG6_ETHMODE_MASK 0x7
++# define LPC18XX_CREG_CREG6_ETHMODE_MII 0x0
++# define LPC18XX_CREG_CREG6_ETHMODE_RMII 0x4
++
++static int lpc18xx_dwmac_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ struct regmap *reg;
++ u8 ethmode;
++ int ret;
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
++ plat_dat->has_gmac = true;
++
++ reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg");
++ if (IS_ERR(reg)) {
++ dev_err(&pdev->dev, "syscon lookup failed\n");
++ return PTR_ERR(reg);
++ }
++
++ if (plat_dat->interface == PHY_INTERFACE_MODE_MII) {
++ ethmode = LPC18XX_CREG_CREG6_ETHMODE_MII;
++ } else if (plat_dat->interface == PHY_INTERFACE_MODE_RMII) {
++ ethmode = LPC18XX_CREG_CREG6_ETHMODE_RMII;
++ } else {
++ dev_err(&pdev->dev, "Only MII and RMII mode supported\n");
++ return -EINVAL;
++ }
++
++ regmap_update_bits(reg, LPC18XX_CREG_CREG6,
++ LPC18XX_CREG_CREG6_ETHMODE_MASK, ethmode);
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id lpc18xx_dwmac_match[] = {
++ { .compatible = "nxp,lpc1850-dwmac" },
++ { }
++};
++MODULE_DEVICE_TABLE(of, lpc18xx_dwmac_match);
++
++static struct platform_driver lpc18xx_dwmac_driver = {
++ .probe = lpc18xx_dwmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "lpc18xx-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = lpc18xx_dwmac_match,
++ },
++};
++module_platform_driver(lpc18xx_dwmac_driver);
++
++MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
++MODULE_DESCRIPTION("DWMAC glue for LPC18xx/43xx Ethernet");
++MODULE_LICENSE("GPL v2");
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
+@@ -15,9 +15,12 @@
+ #include <linux/ethtool.h>
+ #include <linux/io.h>
+ #include <linux/ioport.h>
++#include <linux/module.h>
+ #include <linux/platform_device.h>
+ #include <linux/stmmac.h>
+
++#include "stmmac_platform.h"
++
+ #define ETHMAC_SPEED_100 BIT(1)
+
+ struct meson_dwmac {
+@@ -44,24 +47,54 @@ static void meson6_dwmac_fix_mac_speed(v
+ writel(val, dwmac->reg);
+ }
+
+-static void *meson6_dwmac_setup(struct platform_device *pdev)
++static int meson6_dwmac_probe(struct platform_device *pdev)
+ {
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
+ struct meson_dwmac *dwmac;
+ struct resource *res;
++ int ret;
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
+
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac)
+- return ERR_PTR(-ENOMEM);
++ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ dwmac->reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(dwmac->reg))
+- return dwmac->reg;
++ return PTR_ERR(dwmac->reg);
++
++ plat_dat->bsp_priv = dwmac;
++ plat_dat->fix_mac_speed = meson6_dwmac_fix_mac_speed;
+
+- return dwmac;
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ }
+
+-const struct stmmac_of_data meson6_dwmac_data = {
+- .setup = meson6_dwmac_setup,
+- .fix_mac_speed = meson6_dwmac_fix_mac_speed,
++static const struct of_device_id meson6_dwmac_match[] = {
++ { .compatible = "amlogic,meson6-dwmac" },
++ { }
+ };
++MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
++
++static struct platform_driver meson6_dwmac_driver = {
++ .probe = meson6_dwmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "meson6-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = meson6_dwmac_match,
++ },
++};
++module_platform_driver(meson6_dwmac_driver);
++
++MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
++MODULE_DESCRIPTION("Amlogic Meson DWMAC glue layer");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+@@ -0,0 +1,626 @@
++/**
++ * dwmac-rk.c - Rockchip RK3288 DWMAC specific glue layer
++ *
++ * Copyright (C) 2014 Chen-Zhi (Roger Chen)
++ *
++ * Chen-Zhi (Roger Chen) <roger.chen@rock-chips.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/stmmac.h>
++#include <linux/bitops.h>
++#include <linux/clk.h>
++#include <linux/phy.h>
++#include <linux/of_net.h>
++#include <linux/gpio.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/regulator/consumer.h>
++#include <linux/delay.h>
++#include <linux/mfd/syscon.h>
++#include <linux/regmap.h>
++
++#include "stmmac_platform.h"
++
++struct rk_priv_data;
++struct rk_gmac_ops {
++ void (*set_to_rgmii)(struct rk_priv_data *bsp_priv,
++ int tx_delay, int rx_delay);
++ void (*set_to_rmii)(struct rk_priv_data *bsp_priv);
++ void (*set_rgmii_speed)(struct rk_priv_data *bsp_priv, int speed);
++ void (*set_rmii_speed)(struct rk_priv_data *bsp_priv, int speed);
++};
++
++struct rk_priv_data {
++ struct platform_device *pdev;
++ int phy_iface;
++ struct regulator *regulator;
++ const struct rk_gmac_ops *ops;
++
++ bool clk_enabled;
++ bool clock_input;
++
++ struct clk *clk_mac;
++ struct clk *gmac_clkin;
++ struct clk *mac_clk_rx;
++ struct clk *mac_clk_tx;
++ struct clk *clk_mac_ref;
++ struct clk *clk_mac_refout;
++ struct clk *aclk_mac;
++ struct clk *pclk_mac;
++
++ int tx_delay;
++ int rx_delay;
++
++ struct regmap *grf;
++};
++
++#define HIWORD_UPDATE(val, mask, shift) \
++ ((val) << (shift) | (mask) << ((shift) + 16))
++
++#define GRF_BIT(nr) (BIT(nr) | BIT(nr+16))
++#define GRF_CLR_BIT(nr) (BIT(nr+16))
++
++#define RK3288_GRF_SOC_CON1 0x0248
++#define RK3288_GRF_SOC_CON3 0x0250
++
++/*RK3288_GRF_SOC_CON1*/
++#define RK3288_GMAC_PHY_INTF_SEL_RGMII (GRF_BIT(6) | GRF_CLR_BIT(7) | \
++ GRF_CLR_BIT(8))
++#define RK3288_GMAC_PHY_INTF_SEL_RMII (GRF_CLR_BIT(6) | GRF_CLR_BIT(7) | \
++ GRF_BIT(8))
++#define RK3288_GMAC_FLOW_CTRL GRF_BIT(9)
++#define RK3288_GMAC_FLOW_CTRL_CLR GRF_CLR_BIT(9)
++#define RK3288_GMAC_SPEED_10M GRF_CLR_BIT(10)
++#define RK3288_GMAC_SPEED_100M GRF_BIT(10)
++#define RK3288_GMAC_RMII_CLK_25M GRF_BIT(11)
++#define RK3288_GMAC_RMII_CLK_2_5M GRF_CLR_BIT(11)
++#define RK3288_GMAC_CLK_125M (GRF_CLR_BIT(12) | GRF_CLR_BIT(13))
++#define RK3288_GMAC_CLK_25M (GRF_BIT(12) | GRF_BIT(13))
++#define RK3288_GMAC_CLK_2_5M (GRF_CLR_BIT(12) | GRF_BIT(13))
++#define RK3288_GMAC_RMII_MODE GRF_BIT(14)
++#define RK3288_GMAC_RMII_MODE_CLR GRF_CLR_BIT(14)
++
++/*RK3288_GRF_SOC_CON3*/
++#define RK3288_GMAC_TXCLK_DLY_ENABLE GRF_BIT(14)
++#define RK3288_GMAC_TXCLK_DLY_DISABLE GRF_CLR_BIT(14)
++#define RK3288_GMAC_RXCLK_DLY_ENABLE GRF_BIT(15)
++#define RK3288_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(15)
++#define RK3288_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
++#define RK3288_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
++
++static void rk3288_set_to_rgmii(struct rk_priv_data *bsp_priv,
++ int tx_delay, int rx_delay)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "Missing rockchip,grf property\n");
++ return;
++ }
++
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_PHY_INTF_SEL_RGMII |
++ RK3288_GMAC_RMII_MODE_CLR);
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON3,
++ RK3288_GMAC_RXCLK_DLY_ENABLE |
++ RK3288_GMAC_TXCLK_DLY_ENABLE |
++ RK3288_GMAC_CLK_RX_DL_CFG(rx_delay) |
++ RK3288_GMAC_CLK_TX_DL_CFG(tx_delay));
++}
++
++static void rk3288_set_to_rmii(struct rk_priv_data *bsp_priv)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "Missing rockchip,grf property\n");
++ return;
++ }
++
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_PHY_INTF_SEL_RMII | RK3288_GMAC_RMII_MODE);
++}
++
++static void rk3288_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "Missing rockchip,grf property\n");
++ return;
++ }
++
++ if (speed == 10)
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_CLK_2_5M);
++ else if (speed == 100)
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_CLK_25M);
++ else if (speed == 1000)
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_CLK_125M);
++ else
++ dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
++}
++
++static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "Missing rockchip,grf property\n");
++ return;
++ }
++
++ if (speed == 10) {
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_RMII_CLK_2_5M |
++ RK3288_GMAC_SPEED_10M);
++ } else if (speed == 100) {
++ regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
++ RK3288_GMAC_RMII_CLK_25M |
++ RK3288_GMAC_SPEED_100M);
++ } else {
++ dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
++ }
++}
++
++static const struct rk_gmac_ops rk3288_ops = {
++ .set_to_rgmii = rk3288_set_to_rgmii,
++ .set_to_rmii = rk3288_set_to_rmii,
++ .set_rgmii_speed = rk3288_set_rgmii_speed,
++ .set_rmii_speed = rk3288_set_rmii_speed,
++};
++
++#define RK3368_GRF_SOC_CON15 0x043c
++#define RK3368_GRF_SOC_CON16 0x0440
++
++/* RK3368_GRF_SOC_CON15 */
++#define RK3368_GMAC_PHY_INTF_SEL_RGMII (GRF_BIT(9) | GRF_CLR_BIT(10) | \
++ GRF_CLR_BIT(11))
++#define RK3368_GMAC_PHY_INTF_SEL_RMII (GRF_CLR_BIT(9) | GRF_CLR_BIT(10) | \
++ GRF_BIT(11))
++#define RK3368_GMAC_FLOW_CTRL GRF_BIT(8)
++#define RK3368_GMAC_FLOW_CTRL_CLR GRF_CLR_BIT(8)
++#define RK3368_GMAC_SPEED_10M GRF_CLR_BIT(7)
++#define RK3368_GMAC_SPEED_100M GRF_BIT(7)
++#define RK3368_GMAC_RMII_CLK_25M GRF_BIT(3)
++#define RK3368_GMAC_RMII_CLK_2_5M GRF_CLR_BIT(3)
++#define RK3368_GMAC_CLK_125M (GRF_CLR_BIT(4) | GRF_CLR_BIT(5))
++#define RK3368_GMAC_CLK_25M (GRF_BIT(4) | GRF_BIT(5))
++#define RK3368_GMAC_CLK_2_5M (GRF_CLR_BIT(4) | GRF_BIT(5))
++#define RK3368_GMAC_RMII_MODE GRF_BIT(6)
++#define RK3368_GMAC_RMII_MODE_CLR GRF_CLR_BIT(6)
++
++/* RK3368_GRF_SOC_CON16 */
++#define RK3368_GMAC_TXCLK_DLY_ENABLE GRF_BIT(7)
++#define RK3368_GMAC_TXCLK_DLY_DISABLE GRF_CLR_BIT(7)
++#define RK3368_GMAC_RXCLK_DLY_ENABLE GRF_BIT(15)
++#define RK3368_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(15)
++#define RK3368_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 8)
++#define RK3368_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
++
++static void rk3368_set_to_rgmii(struct rk_priv_data *bsp_priv,
++ int tx_delay, int rx_delay)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
++ return;
++ }
++
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_PHY_INTF_SEL_RGMII |
++ RK3368_GMAC_RMII_MODE_CLR);
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON16,
++ RK3368_GMAC_RXCLK_DLY_ENABLE |
++ RK3368_GMAC_TXCLK_DLY_ENABLE |
++ RK3368_GMAC_CLK_RX_DL_CFG(rx_delay) |
++ RK3368_GMAC_CLK_TX_DL_CFG(tx_delay));
++}
++
++static void rk3368_set_to_rmii(struct rk_priv_data *bsp_priv)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
++ return;
++ }
++
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_PHY_INTF_SEL_RMII | RK3368_GMAC_RMII_MODE);
++}
++
++static void rk3368_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
++ return;
++ }
++
++ if (speed == 10)
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_CLK_2_5M);
++ else if (speed == 100)
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_CLK_25M);
++ else if (speed == 1000)
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_CLK_125M);
++ else
++ dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
++}
++
++static void rk3368_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (IS_ERR(bsp_priv->grf)) {
++ dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
++ return;
++ }
++
++ if (speed == 10) {
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_RMII_CLK_2_5M |
++ RK3368_GMAC_SPEED_10M);
++ } else if (speed == 100) {
++ regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
++ RK3368_GMAC_RMII_CLK_25M |
++ RK3368_GMAC_SPEED_100M);
++ } else {
++ dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
++ }
++}
++
++static const struct rk_gmac_ops rk3368_ops = {
++ .set_to_rgmii = rk3368_set_to_rgmii,
++ .set_to_rmii = rk3368_set_to_rmii,
++ .set_rgmii_speed = rk3368_set_rgmii_speed,
++ .set_rmii_speed = rk3368_set_rmii_speed,
++};
++
++static int gmac_clk_init(struct rk_priv_data *bsp_priv)
++{
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ bsp_priv->clk_enabled = false;
++
++ bsp_priv->mac_clk_rx = devm_clk_get(dev, "mac_clk_rx");
++ if (IS_ERR(bsp_priv->mac_clk_rx))
++ dev_err(dev, "cannot get clock %s\n",
++ "mac_clk_rx");
++
++ bsp_priv->mac_clk_tx = devm_clk_get(dev, "mac_clk_tx");
++ if (IS_ERR(bsp_priv->mac_clk_tx))
++ dev_err(dev, "cannot get clock %s\n",
++ "mac_clk_tx");
++
++ bsp_priv->aclk_mac = devm_clk_get(dev, "aclk_mac");
++ if (IS_ERR(bsp_priv->aclk_mac))
++ dev_err(dev, "cannot get clock %s\n",
++ "aclk_mac");
++
++ bsp_priv->pclk_mac = devm_clk_get(dev, "pclk_mac");
++ if (IS_ERR(bsp_priv->pclk_mac))
++ dev_err(dev, "cannot get clock %s\n",
++ "pclk_mac");
++
++ bsp_priv->clk_mac = devm_clk_get(dev, "stmmaceth");
++ if (IS_ERR(bsp_priv->clk_mac))
++ dev_err(dev, "cannot get clock %s\n",
++ "stmmaceth");
++
++ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) {
++ bsp_priv->clk_mac_ref = devm_clk_get(dev, "clk_mac_ref");
++ if (IS_ERR(bsp_priv->clk_mac_ref))
++ dev_err(dev, "cannot get clock %s\n",
++ "clk_mac_ref");
++
++ if (!bsp_priv->clock_input) {
++ bsp_priv->clk_mac_refout =
++ devm_clk_get(dev, "clk_mac_refout");
++ if (IS_ERR(bsp_priv->clk_mac_refout))
++ dev_err(dev, "cannot get clock %s\n",
++ "clk_mac_refout");
++ }
++ }
++
++ if (bsp_priv->clock_input) {
++ dev_info(dev, "clock input from PHY\n");
++ } else {
++ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII)
++ clk_set_rate(bsp_priv->clk_mac, 50000000);
++ }
++
++ return 0;
++}
++
++static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
++{
++ int phy_iface = phy_iface = bsp_priv->phy_iface;
++
++ if (enable) {
++ if (!bsp_priv->clk_enabled) {
++ if (phy_iface == PHY_INTERFACE_MODE_RMII) {
++ if (!IS_ERR(bsp_priv->mac_clk_rx))
++ clk_prepare_enable(
++ bsp_priv->mac_clk_rx);
++
++ if (!IS_ERR(bsp_priv->clk_mac_ref))
++ clk_prepare_enable(
++ bsp_priv->clk_mac_ref);
++
++ if (!IS_ERR(bsp_priv->clk_mac_refout))
++ clk_prepare_enable(
++ bsp_priv->clk_mac_refout);
++ }
++
++ if (!IS_ERR(bsp_priv->aclk_mac))
++ clk_prepare_enable(bsp_priv->aclk_mac);
++
++ if (!IS_ERR(bsp_priv->pclk_mac))
++ clk_prepare_enable(bsp_priv->pclk_mac);
++
++ if (!IS_ERR(bsp_priv->mac_clk_tx))
++ clk_prepare_enable(bsp_priv->mac_clk_tx);
++
++ /**
++ * if (!IS_ERR(bsp_priv->clk_mac))
++ * clk_prepare_enable(bsp_priv->clk_mac);
++ */
++ mdelay(5);
++ bsp_priv->clk_enabled = true;
++ }
++ } else {
++ if (bsp_priv->clk_enabled) {
++ if (phy_iface == PHY_INTERFACE_MODE_RMII) {
++ if (!IS_ERR(bsp_priv->mac_clk_rx))
++ clk_disable_unprepare(
++ bsp_priv->mac_clk_rx);
++
++ if (!IS_ERR(bsp_priv->clk_mac_ref))
++ clk_disable_unprepare(
++ bsp_priv->clk_mac_ref);
++
++ if (!IS_ERR(bsp_priv->clk_mac_refout))
++ clk_disable_unprepare(
++ bsp_priv->clk_mac_refout);
++ }
++
++ if (!IS_ERR(bsp_priv->aclk_mac))
++ clk_disable_unprepare(bsp_priv->aclk_mac);
++
++ if (!IS_ERR(bsp_priv->pclk_mac))
++ clk_disable_unprepare(bsp_priv->pclk_mac);
++
++ if (!IS_ERR(bsp_priv->mac_clk_tx))
++ clk_disable_unprepare(bsp_priv->mac_clk_tx);
++ /**
++ * if (!IS_ERR(bsp_priv->clk_mac))
++ * clk_disable_unprepare(bsp_priv->clk_mac);
++ */
++ bsp_priv->clk_enabled = false;
++ }
++ }
++
++ return 0;
++}
++
++static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
++{
++ struct regulator *ldo = bsp_priv->regulator;
++ int ret;
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (!ldo) {
++ dev_err(dev, "no regulator found\n");
++ return -1;
++ }
++
++ if (enable) {
++ ret = regulator_enable(ldo);
++ if (ret)
++ dev_err(dev, "fail to enable phy-supply\n");
++ } else {
++ ret = regulator_disable(ldo);
++ if (ret)
++ dev_err(dev, "fail to disable phy-supply\n");
++ }
++
++ return 0;
++}
++
++static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
++ const struct rk_gmac_ops *ops)
++{
++ struct rk_priv_data *bsp_priv;
++ struct device *dev = &pdev->dev;
++ int ret;
++ const char *strings = NULL;
++ int value;
++
++ bsp_priv = devm_kzalloc(dev, sizeof(*bsp_priv), GFP_KERNEL);
++ if (!bsp_priv)
++ return ERR_PTR(-ENOMEM);
++
++ bsp_priv->phy_iface = of_get_phy_mode(dev->of_node);
++ bsp_priv->ops = ops;
++
++ bsp_priv->regulator = devm_regulator_get_optional(dev, "phy");
++ if (IS_ERR(bsp_priv->regulator)) {
++ if (PTR_ERR(bsp_priv->regulator) == -EPROBE_DEFER) {
++ dev_err(dev, "phy regulator is not available yet, deferred probing\n");
++ return ERR_PTR(-EPROBE_DEFER);
++ }
++ dev_err(dev, "no regulator found\n");
++ bsp_priv->regulator = NULL;
++ }
++
++ ret = of_property_read_string(dev->of_node, "clock_in_out", &strings);
++ if (ret) {
++ dev_err(dev, "Can not read property: clock_in_out.\n");
++ bsp_priv->clock_input = true;
++ } else {
++ dev_info(dev, "clock input or output? (%s).\n",
++ strings);
++ if (!strcmp(strings, "input"))
++ bsp_priv->clock_input = true;
++ else
++ bsp_priv->clock_input = false;
++ }
++
++ ret = of_property_read_u32(dev->of_node, "tx_delay", &value);
++ if (ret) {
++ bsp_priv->tx_delay = 0x30;
++ dev_err(dev, "Can not read property: tx_delay.");
++ dev_err(dev, "set tx_delay to 0x%x\n",
++ bsp_priv->tx_delay);
++ } else {
++ dev_info(dev, "TX delay(0x%x).\n", value);
++ bsp_priv->tx_delay = value;
++ }
++
++ ret = of_property_read_u32(dev->of_node, "rx_delay", &value);
++ if (ret) {
++ bsp_priv->rx_delay = 0x10;
++ dev_err(dev, "Can not read property: rx_delay.");
++ dev_err(dev, "set rx_delay to 0x%x\n",
++ bsp_priv->rx_delay);
++ } else {
++ dev_info(dev, "RX delay(0x%x).\n", value);
++ bsp_priv->rx_delay = value;
++ }
++
++ bsp_priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
++ "rockchip,grf");
++ bsp_priv->pdev = pdev;
++
++ /*rmii or rgmii*/
++ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RGMII) {
++ dev_info(dev, "init for RGMII\n");
++ bsp_priv->ops->set_to_rgmii(bsp_priv, bsp_priv->tx_delay,
++ bsp_priv->rx_delay);
++ } else if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) {
++ dev_info(dev, "init for RMII\n");
++ bsp_priv->ops->set_to_rmii(bsp_priv);
++ } else {
++ dev_err(dev, "NO interface defined!\n");
++ }
++
++ gmac_clk_init(bsp_priv);
++
++ return bsp_priv;
++}
++
++static int rk_gmac_init(struct platform_device *pdev, void *priv)
++{
++ struct rk_priv_data *bsp_priv = priv;
++ int ret;
++
++ ret = phy_power_on(bsp_priv, true);
++ if (ret)
++ return ret;
++
++ ret = gmac_clk_enable(bsp_priv, true);
++ if (ret)
++ return ret;
++
++ return 0;
++}
++
++static void rk_gmac_exit(struct platform_device *pdev, void *priv)
++{
++ struct rk_priv_data *gmac = priv;
++
++ phy_power_on(gmac, false);
++ gmac_clk_enable(gmac, false);
++}
++
++static void rk_fix_speed(void *priv, unsigned int speed)
++{
++ struct rk_priv_data *bsp_priv = priv;
++ struct device *dev = &bsp_priv->pdev->dev;
++
++ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RGMII)
++ bsp_priv->ops->set_rgmii_speed(bsp_priv, speed);
++ else if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII)
++ bsp_priv->ops->set_rmii_speed(bsp_priv, speed);
++ else
++ dev_err(dev, "unsupported interface %d", bsp_priv->phy_iface);
++}
++
++static int rk_gmac_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ const struct rk_gmac_ops *data;
++ int ret;
++
++ data = of_device_get_match_data(&pdev->dev);
++ if (!data) {
++ dev_err(&pdev->dev, "no of match data provided\n");
++ return -EINVAL;
++ }
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
++ plat_dat->has_gmac = true;
++ plat_dat->init = rk_gmac_init;
++ plat_dat->exit = rk_gmac_exit;
++ plat_dat->fix_mac_speed = rk_fix_speed;
++
++ plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
++ if (IS_ERR(plat_dat->bsp_priv))
++ return PTR_ERR(plat_dat->bsp_priv);
++
++ ret = rk_gmac_init(pdev, plat_dat->bsp_priv);
++ if (ret)
++ return ret;
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id rk_gmac_dwmac_match[] = {
++ { .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
++ { .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
++ { }
++};
++MODULE_DEVICE_TABLE(of, rk_gmac_dwmac_match);
++
++static struct platform_driver rk_gmac_dwmac_driver = {
++ .probe = rk_gmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "rk_gmac-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = rk_gmac_dwmac_match,
++ },
++};
++module_platform_driver(rk_gmac_dwmac_driver);
++
++MODULE_AUTHOR("Chen-Zhi (Roger Chen) <roger.chen@rock-chips.com>");
++MODULE_DESCRIPTION("Rockchip RK3288 DWMAC specific glue layer");
++MODULE_LICENSE("GPL");
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+@@ -23,7 +23,9 @@
+ #include <linux/regmap.h>
+ #include <linux/reset.h>
+ #include <linux/stmmac.h>
++
+ #include "stmmac.h"
++#include "stmmac_platform.h"
+
+ #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII 0x0
+ #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII 0x1
+@@ -89,7 +91,9 @@ static int socfpga_dwmac_parse_data(stru
+ STMMAC_RESOURCE_NAME);
+ if (IS_ERR(dwmac->stmmac_rst)) {
+ dev_info(dev, "Could not get reset control!\n");
+- return -EINVAL;
++ if (PTR_ERR(dwmac->stmmac_rst) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ dwmac->stmmac_rst = NULL;
+ }
+
+ dwmac->interface = of_get_phy_mode(np);
+@@ -171,31 +175,6 @@ static int socfpga_dwmac_setup(struct so
+ return 0;
+ }
+
+-static void *socfpga_dwmac_probe(struct platform_device *pdev)
+-{
+- struct device *dev = &pdev->dev;
+- int ret;
+- struct socfpga_dwmac *dwmac;
+-
+- dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL);
+- if (!dwmac)
+- return ERR_PTR(-ENOMEM);
+-
+- ret = socfpga_dwmac_parse_data(dwmac, dev);
+- if (ret) {
+- dev_err(dev, "Unable to parse OF data\n");
+- return ERR_PTR(ret);
+- }
+-
+- ret = socfpga_dwmac_setup(dwmac);
+- if (ret) {
+- dev_err(dev, "couldn't setup SoC glue (%d)\n", ret);
+- return ERR_PTR(ret);
+- }
+-
+- return dwmac;
+-}
+-
+ static void socfpga_dwmac_exit(struct platform_device *pdev, void *priv)
+ {
+ struct socfpga_dwmac *dwmac = priv;
+@@ -253,9 +232,65 @@ static int socfpga_dwmac_init(struct pla
+ return ret;
+ }
+
+-const struct stmmac_of_data socfpga_gmac_data = {
+- .setup = socfpga_dwmac_probe,
+- .init = socfpga_dwmac_init,
+- .exit = socfpga_dwmac_exit,
+- .fix_mac_speed = socfpga_dwmac_fix_mac_speed,
++static int socfpga_dwmac_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ struct device *dev = &pdev->dev;
++ int ret;
++ struct socfpga_dwmac *dwmac;
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
++ dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL);
++ if (!dwmac)
++ return -ENOMEM;
++
++ ret = socfpga_dwmac_parse_data(dwmac, dev);
++ if (ret) {
++ dev_err(dev, "Unable to parse OF data\n");
++ return ret;
++ }
++
++ ret = socfpga_dwmac_setup(dwmac);
++ if (ret) {
++ dev_err(dev, "couldn't setup SoC glue (%d)\n", ret);
++ return ret;
++ }
++
++ plat_dat->bsp_priv = dwmac;
++ plat_dat->init = socfpga_dwmac_init;
++ plat_dat->exit = socfpga_dwmac_exit;
++ plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed;
++
++ ret = socfpga_dwmac_init(pdev, plat_dat->bsp_priv);
++ if (ret)
++ return ret;
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id socfpga_dwmac_match[] = {
++ { .compatible = "altr,socfpga-stmmac" },
++ { }
+ };
++MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
++
++static struct platform_driver socfpga_dwmac_driver = {
++ .probe = socfpga_dwmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "socfpga-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = socfpga_dwmac_match,
++ },
++};
++module_platform_driver(socfpga_dwmac_driver);
++
++MODULE_LICENSE("GPL v2");
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
+@@ -1,4 +1,4 @@
+-/**
++/*
+ * dwmac-sti.c - STMicroelectronics DWMAC Specific Glue layer
+ *
+ * Copyright (C) 2003-2014 STMicroelectronics (R&D) Limited
+@@ -17,11 +17,15 @@
+ #include <linux/stmmac.h>
+ #include <linux/phy.h>
+ #include <linux/mfd/syscon.h>
++#include <linux/module.h>
+ #include <linux/regmap.h>
+ #include <linux/clk.h>
+ #include <linux/of.h>
++#include <linux/of_device.h>
+ #include <linux/of_net.h>
+
++#include "stmmac_platform.h"
++
+ #define DWMAC_125MHZ 125000000
+ #define DWMAC_50MHZ 50000000
+ #define DWMAC_25MHZ 25000000
+@@ -35,9 +39,8 @@
+ #define IS_PHY_IF_MODE_GBIT(iface) (IS_PHY_IF_MODE_RGMII(iface) || \
+ iface == PHY_INTERFACE_MODE_GMII)
+
+-/* STiH4xx register definitions (STiH415/STiH416/STiH407/STiH410 families) */
+-
+-/**
++/* STiH4xx register definitions (STiH415/STiH416/STiH407/STiH410 families)
++ *
+ * Below table summarizes the clock requirement and clock sources for
+ * supported phy interface modes with link speeds.
+ * ________________________________________________
+@@ -76,9 +79,7 @@
+ #define STIH4XX_ETH_SEL_INTERNAL_NOTEXT_PHYCLK BIT(7)
+ #define STIH4XX_ETH_SEL_TXCLK_NOT_CLK125 BIT(6)
+
+-/* STiD127 register definitions */
+-
+-/**
++/* STiD127 register definitions
+ *-----------------------
+ * src |BIT(6)| BIT(7)|
+ *-----------------------
+@@ -104,13 +105,13 @@
+ #define EN_MASK GENMASK(1, 1)
+ #define EN BIT(1)
+
+-/**
++/*
+ * 3 bits [4:2]
+ * 000-GMII/MII
+ * 001-RGMII
+ * 010-SGMII
+ * 100-RMII
+-*/
++ */
+ #define MII_PHY_SEL_MASK GENMASK(4, 2)
+ #define ETH_PHY_SEL_RMII BIT(4)
+ #define ETH_PHY_SEL_SGMII BIT(3)
+@@ -123,11 +124,16 @@ struct sti_dwmac {
+ bool ext_phyclk; /* Clock from external PHY */
+ u32 tx_retime_src; /* TXCLK Retiming*/
+ struct clk *clk; /* PHY clock */
+- int ctrl_reg; /* GMAC glue-logic control register */
++ u32 ctrl_reg; /* GMAC glue-logic control register */
+ int clk_sel_reg; /* GMAC ext clk selection register */
+ struct device *dev;
+ struct regmap *regmap;
+ u32 speed;
++ void (*fix_retime_src)(void *priv, unsigned int speed);
++};
++
++struct sti_dwmac_of_data {
++ void (*fix_retime_src)(void *priv, unsigned int speed);
+ };
+
+ static u32 phy_intf_sels[] = {
+@@ -222,8 +228,9 @@ static void stid127_fix_retime_src(void
+ regmap_update_bits(dwmac->regmap, reg, STID127_RETIME_SRC_MASK, val);
+ }
+
+-static void sti_dwmac_ctrl_init(struct sti_dwmac *dwmac)
++static int sti_dwmac_init(struct platform_device *pdev, void *priv)
+ {
++ struct sti_dwmac *dwmac = priv;
+ struct regmap *regmap = dwmac->regmap;
+ int iface = dwmac->interface;
+ struct device *dev = dwmac->dev;
+@@ -241,28 +248,8 @@ static void sti_dwmac_ctrl_init(struct s
+
+ val = (iface == PHY_INTERFACE_MODE_REVMII) ? 0 : ENMII;
+ regmap_update_bits(regmap, reg, ENMII_MASK, val);
+-}
+
+-static int stix4xx_init(struct platform_device *pdev, void *priv)
+-{
+- struct sti_dwmac *dwmac = priv;
+- u32 spd = dwmac->speed;
+-
+- sti_dwmac_ctrl_init(dwmac);
+-
+- stih4xx_fix_retime_src(priv, spd);
+-
+- return 0;
+-}
+-
+-static int stid127_init(struct platform_device *pdev, void *priv)
+-{
+- struct sti_dwmac *dwmac = priv;
+- u32 spd = dwmac->speed;
+-
+- sti_dwmac_ctrl_init(dwmac);
+-
+- stid127_fix_retime_src(priv, spd);
++ dwmac->fix_retime_src(priv, dwmac->speed);
+
+ return 0;
+ }
+@@ -286,11 +273,6 @@ static int sti_dwmac_parse_data(struct s
+ if (!np)
+ return -EINVAL;
+
+- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sti-ethconf");
+- if (!res)
+- return -ENODATA;
+- dwmac->ctrl_reg = res->start;
+-
+ /* clk selection from extra syscfg register */
+ dwmac->clk_sel_reg = -ENXIO;
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sti-clkconf");
+@@ -301,6 +283,12 @@ static int sti_dwmac_parse_data(struct s
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
++ err = of_property_read_u32_index(np, "st,syscon", 1, &dwmac->ctrl_reg);
++ if (err) {
++ dev_err(dev, "Can't get sysconfig ctrl offset (%d)\n", err);
++ return err;
++ }
++
+ dwmac->dev = dev;
+ dwmac->interface = of_get_phy_mode(np);
+ dwmac->regmap = regmap;
+@@ -310,16 +298,16 @@ static int sti_dwmac_parse_data(struct s
+
+ if (IS_PHY_IF_MODE_GBIT(dwmac->interface)) {
+ const char *rs;
+- dwmac->tx_retime_src = TX_RETIME_SRC_CLKGEN;
+
+ err = of_property_read_string(np, "st,tx-retime-src", &rs);
+- if (err < 0)
++ if (err < 0) {
+ dev_warn(dev, "Use internal clock source\n");
+-
+- if (!strcasecmp(rs, "clk_125"))
++ dwmac->tx_retime_src = TX_RETIME_SRC_CLKGEN;
++ } else if (!strcasecmp(rs, "clk_125")) {
+ dwmac->tx_retime_src = TX_RETIME_SRC_CLK_125;
+- else if (!strcasecmp(rs, "txclk"))
++ } else if (!strcasecmp(rs, "txclk")) {
+ dwmac->tx_retime_src = TX_RETIME_SRC_TXCLK;
++ }
+
+ dwmac->speed = SPEED_1000;
+ }
+@@ -333,34 +321,80 @@ static int sti_dwmac_parse_data(struct s
+ return 0;
+ }
+
+-static void *sti_dwmac_setup(struct platform_device *pdev)
++static int sti_dwmac_probe(struct platform_device *pdev)
+ {
++ struct plat_stmmacenet_data *plat_dat;
++ const struct sti_dwmac_of_data *data;
++ struct stmmac_resources stmmac_res;
+ struct sti_dwmac *dwmac;
+ int ret;
+
++ data = of_device_get_match_data(&pdev->dev);
++ if (!data) {
++ dev_err(&pdev->dev, "No OF match data provided\n");
++ return -EINVAL;
++ }
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac)
+- return ERR_PTR(-ENOMEM);
++ return -ENOMEM;
+
+ ret = sti_dwmac_parse_data(dwmac, pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to parse OF data\n");
+- return ERR_PTR(ret);
++ return ret;
+ }
+
+- return dwmac;
++ dwmac->fix_retime_src = data->fix_retime_src;
++
++ plat_dat->bsp_priv = dwmac;
++ plat_dat->init = sti_dwmac_init;
++ plat_dat->exit = sti_dwmac_exit;
++ plat_dat->fix_mac_speed = data->fix_retime_src;
++
++ ret = sti_dwmac_init(pdev, plat_dat->bsp_priv);
++ if (ret)
++ return ret;
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ }
+
+-const struct stmmac_of_data stih4xx_dwmac_data = {
+- .fix_mac_speed = stih4xx_fix_retime_src,
+- .setup = sti_dwmac_setup,
+- .init = stix4xx_init,
+- .exit = sti_dwmac_exit,
++static const struct sti_dwmac_of_data stih4xx_dwmac_data = {
++ .fix_retime_src = stih4xx_fix_retime_src,
+ };
+
+-const struct stmmac_of_data stid127_dwmac_data = {
+- .fix_mac_speed = stid127_fix_retime_src,
+- .setup = sti_dwmac_setup,
+- .init = stid127_init,
+- .exit = sti_dwmac_exit,
++static const struct sti_dwmac_of_data stid127_dwmac_data = {
++ .fix_retime_src = stid127_fix_retime_src,
+ };
++
++static const struct of_device_id sti_dwmac_match[] = {
++ { .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
++ { .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},
++ { .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data},
++ { .compatible = "st,stih407-dwmac", .data = &stih4xx_dwmac_data},
++ { }
++};
++MODULE_DEVICE_TABLE(of, sti_dwmac_match);
++
++static struct platform_driver sti_dwmac_driver = {
++ .probe = sti_dwmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "sti-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = sti_dwmac_match,
++ },
++};
++module_platform_driver(sti_dwmac_driver);
++
++MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@st.com>");
++MODULE_DESCRIPTION("STMicroelectronics DWMAC Specific Glue layer");
++MODULE_LICENSE("GPL");
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
+@@ -1,4 +1,4 @@
+-/**
++/*
+ * dwmac-sunxi.c - Allwinner sunxi DWMAC specific glue layer
+ *
+ * Copyright (C) 2013 Chen-Yu Tsai
+@@ -18,10 +18,14 @@
+
+ #include <linux/stmmac.h>
+ #include <linux/clk.h>
++#include <linux/module.h>
+ #include <linux/phy.h>
++#include <linux/platform_device.h>
+ #include <linux/of_net.h>
+ #include <linux/regulator/consumer.h>
+
++#include "stmmac_platform.h"
++
+ struct sunxi_priv_data {
+ int interface;
+ int clk_enabled;
+@@ -29,35 +33,6 @@ struct sunxi_priv_data {
+ struct regulator *regulator;
+ };
+
+-static void *sun7i_gmac_setup(struct platform_device *pdev)
+-{
+- struct sunxi_priv_data *gmac;
+- struct device *dev = &pdev->dev;
+-
+- gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL);
+- if (!gmac)
+- return ERR_PTR(-ENOMEM);
+-
+- gmac->interface = of_get_phy_mode(dev->of_node);
+-
+- gmac->tx_clk = devm_clk_get(dev, "allwinner_gmac_tx");
+- if (IS_ERR(gmac->tx_clk)) {
+- dev_err(dev, "could not get tx clock\n");
+- return gmac->tx_clk;
+- }
+-
+- /* Optional regulator for PHY */
+- gmac->regulator = devm_regulator_get_optional(dev, "phy");
+- if (IS_ERR(gmac->regulator)) {
+- if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
+- return ERR_PTR(-EPROBE_DEFER);
+- dev_info(dev, "no regulator found\n");
+- gmac->regulator = NULL;
+- }
+-
+- return gmac;
+-}
+-
+ #define SUN7I_GMAC_GMII_RGMII_RATE 125000000
+ #define SUN7I_GMAC_MII_RATE 25000000
+
+@@ -128,13 +103,76 @@ static void sun7i_fix_speed(void *priv,
+ }
+ }
+
+-/* of_data specifying hardware features and callbacks.
+- * hardware features were copied from Allwinner drivers. */
+-const struct stmmac_of_data sun7i_gmac_data = {
+- .has_gmac = 1,
+- .tx_coe = 1,
+- .fix_mac_speed = sun7i_fix_speed,
+- .setup = sun7i_gmac_setup,
+- .init = sun7i_gmac_init,
+- .exit = sun7i_gmac_exit,
++static int sun7i_gmac_probe(struct platform_device *pdev)
++{
++ struct plat_stmmacenet_data *plat_dat;
++ struct stmmac_resources stmmac_res;
++ struct sunxi_priv_data *gmac;
++ struct device *dev = &pdev->dev;
++ int ret;
++
++ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
++ if (ret)
++ return ret;
++
++ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ if (IS_ERR(plat_dat))
++ return PTR_ERR(plat_dat);
++
++ gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL);
++ if (!gmac)
++ return -ENOMEM;
++
++ gmac->interface = of_get_phy_mode(dev->of_node);
++
++ gmac->tx_clk = devm_clk_get(dev, "allwinner_gmac_tx");
++ if (IS_ERR(gmac->tx_clk)) {
++ dev_err(dev, "could not get tx clock\n");
++ return PTR_ERR(gmac->tx_clk);
++ }
++
++ /* Optional regulator for PHY */
++ gmac->regulator = devm_regulator_get_optional(dev, "phy");
++ if (IS_ERR(gmac->regulator)) {
++ if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ dev_info(dev, "no regulator found\n");
++ gmac->regulator = NULL;
++ }
++
++ /* platform data specifying hardware features and callbacks.
++ * hardware features were copied from Allwinner drivers. */
++ plat_dat->tx_coe = 1;
++ plat_dat->has_gmac = true;
++ plat_dat->bsp_priv = gmac;
++ plat_dat->init = sun7i_gmac_init;
++ plat_dat->exit = sun7i_gmac_exit;
++ plat_dat->fix_mac_speed = sun7i_fix_speed;
++
++ ret = sun7i_gmac_init(pdev, plat_dat->bsp_priv);
++ if (ret)
++ return ret;
++
++ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
++}
++
++static const struct of_device_id sun7i_dwmac_match[] = {
++ { .compatible = "allwinner,sun7i-a20-gmac" },
++ { }
+ };
++MODULE_DEVICE_TABLE(of, sun7i_dwmac_match);
++
++static struct platform_driver sun7i_dwmac_driver = {
++ .probe = sun7i_gmac_probe,
++ .remove = stmmac_pltfr_remove,
++ .driver = {
++ .name = "sun7i-dwmac",
++ .pm = &stmmac_pltfr_pm_ops,
++ .of_match_table = sun7i_dwmac_match,
++ },
++};
++module_platform_driver(sun7i_dwmac_driver);
++
++MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
++MODULE_DESCRIPTION("Allwinner sunxi DWMAC specific glue layer");
++MODULE_LICENSE("GPL");
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+@@ -172,6 +172,7 @@ enum inter_frame_gap {
+ /* GMAC FLOW CTRL defines */
+ #define GMAC_FLOW_CTRL_PT_MASK 0xffff0000 /* Pause Time Mask */
+ #define GMAC_FLOW_CTRL_PT_SHIFT 16
++#define GMAC_FLOW_CTRL_UP 0x00000008 /* Unicast pause frame enable */
+ #define GMAC_FLOW_CTRL_RFE 0x00000004 /* Rx Flow Control Enable */
+ #define GMAC_FLOW_CTRL_TFE 0x00000002 /* Tx Flow Control Enable */
+ #define GMAC_FLOW_CTRL_FCB_BPA 0x00000001 /* Flow Control Busy ... */
+@@ -246,6 +247,56 @@ enum ttc_control {
+ #define DMA_CONTROL_FEF 0x00000080
+ #define DMA_CONTROL_FUF 0x00000040
+
++/* Receive flow control activation field
++ * RFA field in DMA control register, bits 23,10:9
++ */
++#define DMA_CONTROL_RFA_MASK 0x00800600
++
++/* Receive flow control deactivation field
++ * RFD field in DMA control register, bits 22,12:11
++ */
++#define DMA_CONTROL_RFD_MASK 0x00401800
++
++/* RFD and RFA fields are encoded as follows
++ *
++ * Bit Field
++ * 0,00 - Full minus 1KB (only valid when rxfifo >= 4KB and EFC enabled)
++ * 0,01 - Full minus 2KB (only valid when rxfifo >= 4KB and EFC enabled)
++ * 0,10 - Full minus 3KB (only valid when rxfifo >= 4KB and EFC enabled)
++ * 0,11 - Full minus 4KB (only valid when rxfifo > 4KB and EFC enabled)
++ * 1,00 - Full minus 5KB (only valid when rxfifo > 8KB and EFC enabled)
++ * 1,01 - Full minus 6KB (only valid when rxfifo > 8KB and EFC enabled)
++ * 1,10 - Full minus 7KB (only valid when rxfifo > 8KB and EFC enabled)
++ * 1,11 - Reserved
++ *
++ * RFD should always be > RFA for a given FIFO size. RFD == RFA may work,
++ * but packet throughput performance may not be as expected.
++ *
++ * Be sure that bit 3 in GMAC Register 6 is set for Unicast Pause frame
++ * detection (IEEE Specification Requirement, Annex 31B, 31B.1, Pause
++ * Description).
++ *
++ * Be sure that DZPA (bit 7 in Flow Control Register, GMAC Register 6),
++ * is set to 0. This allows pause frames with a quanta of 0 to be sent
++ * as an XOFF message to the link peer.
++ */
++
++#define RFA_FULL_MINUS_1K 0x00000000
++#define RFA_FULL_MINUS_2K 0x00000200
++#define RFA_FULL_MINUS_3K 0x00000400
++#define RFA_FULL_MINUS_4K 0x00000600
++#define RFA_FULL_MINUS_5K 0x00800000
++#define RFA_FULL_MINUS_6K 0x00800200
++#define RFA_FULL_MINUS_7K 0x00800400
++
++#define RFD_FULL_MINUS_1K 0x00000000
++#define RFD_FULL_MINUS_2K 0x00000800
++#define RFD_FULL_MINUS_3K 0x00001000
++#define RFD_FULL_MINUS_4K 0x00001800
++#define RFD_FULL_MINUS_5K 0x00400000
++#define RFD_FULL_MINUS_6K 0x00400800
++#define RFD_FULL_MINUS_7K 0x00401000
++
+ enum rtc_control {
+ DMA_CONTROL_RTC_64 = 0x00000000,
+ DMA_CONTROL_RTC_32 = 0x00000008,
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+@@ -201,7 +201,10 @@ static void dwmac1000_flow_ctrl(struct m
+ unsigned int fc, unsigned int pause_time)
+ {
+ void __iomem *ioaddr = hw->pcsr;
+- unsigned int flow = 0;
++ /* Set flow such that DZPQ in Mac Register 6 is 0,
++ * and unicast pause detect is enabled.
++ */
++ unsigned int flow = GMAC_FLOW_CTRL_UP;
+
+ pr_debug("GMAC Flow-Control:\n");
+ if (fc & FLOW_RX) {
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+@@ -70,10 +70,6 @@ static int dwmac1000_dma_init(void __iom
+ if (mb)
+ value |= DMA_BUS_MODE_MB;
+
+-#ifdef CONFIG_STMMAC_DA
+- value |= DMA_BUS_MODE_DA; /* Rx has priority over tx */
+-#endif
+-
+ if (atds)
+ value |= DMA_BUS_MODE_ATDS;
+
+@@ -110,8 +106,29 @@ static int dwmac1000_dma_init(void __iom
+ return 0;
+ }
+
++static u32 dwmac1000_configure_fc(u32 csr6, int rxfifosz)
++{
++ csr6 &= ~DMA_CONTROL_RFA_MASK;
++ csr6 &= ~DMA_CONTROL_RFD_MASK;
++
++ /* Leave flow control disabled if receive fifo size is less than
++ * 4K or 0. Otherwise, send XOFF when fifo is 1K less than full,
++ * and send XON when 2K less than full.
++ */
++ if (rxfifosz < 4096) {
++ csr6 &= ~DMA_CONTROL_EFC;
++ pr_debug("GMAC: disabling flow control, rxfifo too small(%d)\n",
++ rxfifosz);
++ } else {
++ csr6 |= DMA_CONTROL_EFC;
++ csr6 |= RFA_FULL_MINUS_1K;
++ csr6 |= RFD_FULL_MINUS_2K;
++ }
++ return csr6;
++}
++
+ static void dwmac1000_dma_operation_mode(void __iomem *ioaddr, int txmode,
+- int rxmode)
++ int rxmode, int rxfifosz)
+ {
+ u32 csr6 = readl(ioaddr + DMA_CONTROL);
+
+@@ -157,6 +174,9 @@ static void dwmac1000_dma_operation_mode
+ csr6 |= DMA_CONTROL_RTC_128;
+ }
+
++ /* Configure flow control based on rx fifo size */
++ csr6 = dwmac1000_configure_fc(csr6, rxfifosz);
++
+ writel(csr6, ioaddr + DMA_CONTROL);
+ }
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+@@ -72,7 +72,7 @@ static int dwmac100_dma_init(void __iome
+ * control register.
+ */
+ static void dwmac100_dma_operation_mode(void __iomem *ioaddr, int txmode,
+- int rxmode)
++ int rxmode, int rxfifosz)
+ {
+ u32 csr6 = readl(ioaddr + DMA_CONTROL);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
++++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
+@@ -73,7 +73,7 @@
+ #define MMC_RX_OCTETCOUNT_G 0x00000188
+ #define MMC_RX_BROADCASTFRAME_G 0x0000018c
+ #define MMC_RX_MULTICASTFRAME_G 0x00000190
+-#define MMC_RX_CRC_ERRROR 0x00000194
++#define MMC_RX_CRC_ERROR 0x00000194
+ #define MMC_RX_ALIGN_ERROR 0x00000198
+ #define MMC_RX_RUN_ERROR 0x0000019C
+ #define MMC_RX_JABBER_ERROR 0x000001A0
+@@ -196,7 +196,7 @@ void dwmac_mmc_read(void __iomem *ioaddr
+ mmc->mmc_rx_octetcount_g += readl(ioaddr + MMC_RX_OCTETCOUNT_G);
+ mmc->mmc_rx_broadcastframe_g += readl(ioaddr + MMC_RX_BROADCASTFRAME_G);
+ mmc->mmc_rx_multicastframe_g += readl(ioaddr + MMC_RX_MULTICASTFRAME_G);
+- mmc->mmc_rx_crc_error += readl(ioaddr + MMC_RX_CRC_ERRROR);
++ mmc->mmc_rx_crc_error += readl(ioaddr + MMC_RX_CRC_ERROR);
+ mmc->mmc_rx_align_error += readl(ioaddr + MMC_RX_ALIGN_ERROR);
+ mmc->mmc_rx_run_error += readl(ioaddr + MMC_RX_RUN_ERROR);
+ mmc->mmc_rx_jabber_error += readl(ioaddr + MMC_RX_JABBER_ERROR);
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+@@ -34,6 +34,14 @@
+ #include <linux/ptp_clock_kernel.h>
+ #include <linux/reset.h>
+
++struct stmmac_resources {
++ void __iomem *addr;
++ const char *mac;
++ int wol_irq;
++ int lpi_irq;
++ int irq;
++};
++
+ struct stmmac_tx_info {
+ dma_addr_t buf;
+ bool map_as_page;
+@@ -97,6 +105,7 @@ struct stmmac_priv {
+ int wolopts;
+ int wol_irq;
+ struct clk *stmmac_clk;
++ struct clk *pclk;
+ struct reset_control *stmmac_rst;
+ int clk_csr;
+ struct timer_list eee_ctrl_timer;
+@@ -116,97 +125,28 @@ struct stmmac_priv {
+ int use_riwt;
+ int irq_wake;
+ spinlock_t ptp_lock;
++
++#ifdef CONFIG_DEBUG_FS
++ struct dentry *dbgfs_dir;
++ struct dentry *dbgfs_rings_status;
++ struct dentry *dbgfs_dma_cap;
++#endif
+ };
+
+ int stmmac_mdio_unregister(struct net_device *ndev);
+ int stmmac_mdio_register(struct net_device *ndev);
+ int stmmac_mdio_reset(struct mii_bus *mii);
+ void stmmac_set_ethtool_ops(struct net_device *netdev);
+-extern const struct stmmac_desc_ops enh_desc_ops;
+-extern const struct stmmac_desc_ops ndesc_ops;
+-extern const struct stmmac_hwtimestamp stmmac_ptp;
++
+ int stmmac_ptp_register(struct stmmac_priv *priv);
+ void stmmac_ptp_unregister(struct stmmac_priv *priv);
+ int stmmac_resume(struct net_device *ndev);
+ int stmmac_suspend(struct net_device *ndev);
+ int stmmac_dvr_remove(struct net_device *ndev);
+-struct stmmac_priv *stmmac_dvr_probe(struct device *device,
+- struct plat_stmmacenet_data *plat_dat,
+- void __iomem *addr);
++int stmmac_dvr_probe(struct device *device,
++ struct plat_stmmacenet_data *plat_dat,
++ struct stmmac_resources *res);
+ void stmmac_disable_eee_mode(struct stmmac_priv *priv);
+ bool stmmac_eee_init(struct stmmac_priv *priv);
+
+-#ifdef CONFIG_STMMAC_PLATFORM
+-#ifdef CONFIG_DWMAC_MESON
+-extern const struct stmmac_of_data meson6_dwmac_data;
+-#endif
+-#ifdef CONFIG_DWMAC_SUNXI
+-extern const struct stmmac_of_data sun7i_gmac_data;
+-#endif
+-#ifdef CONFIG_DWMAC_STI
+-extern const struct stmmac_of_data stih4xx_dwmac_data;
+-extern const struct stmmac_of_data stid127_dwmac_data;
+-#endif
+-#ifdef CONFIG_DWMAC_SOCFPGA
+-extern const struct stmmac_of_data socfpga_gmac_data;
+-#endif
+-extern struct platform_driver stmmac_pltfr_driver;
+-static inline int stmmac_register_platform(void)
+-{
+- int err;
+-
+- err = platform_driver_register(&stmmac_pltfr_driver);
+- if (err)
+- pr_err("stmmac: failed to register the platform driver\n");
+-
+- return err;
+-}
+-
+-static inline void stmmac_unregister_platform(void)
+-{
+- platform_driver_unregister(&stmmac_pltfr_driver);
+-}
+-#else
+-static inline int stmmac_register_platform(void)
+-{
+- pr_debug("stmmac: do not register the platf driver\n");
+-
+- return 0;
+-}
+-
+-static inline void stmmac_unregister_platform(void)
+-{
+-}
+-#endif /* CONFIG_STMMAC_PLATFORM */
+-
+-#ifdef CONFIG_STMMAC_PCI
+-extern struct pci_driver stmmac_pci_driver;
+-static inline int stmmac_register_pci(void)
+-{
+- int err;
+-
+- err = pci_register_driver(&stmmac_pci_driver);
+- if (err)
+- pr_err("stmmac: failed to register the PCI driver\n");
+-
+- return err;
+-}
+-
+-static inline void stmmac_unregister_pci(void)
+-{
+- pci_unregister_driver(&stmmac_pci_driver);
+-}
+-#else
+-static inline int stmmac_register_pci(void)
+-{
+- pr_debug("stmmac: do not register the PCI driver\n");
+-
+- return 0;
+-}
+-
+-static inline void stmmac_unregister_pci(void)
+-{
+-}
+-#endif /* CONFIG_STMMAC_PCI */
+-
+ #endif /* __STMMAC_H__ */
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+@@ -696,7 +696,7 @@ static int stmmac_set_coalesce(struct ne
+ (ec->tx_max_coalesced_frames == 0))
+ return -EINVAL;
+
+- if ((ec->tx_coalesce_usecs > STMMAC_COAL_TX_TIMER) ||
++ if ((ec->tx_coalesce_usecs > STMMAC_MAX_COAL_TX_TICK) ||
+ (ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
+ return -EINVAL;
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -44,14 +44,15 @@
+ #include <linux/slab.h>
+ #include <linux/prefetch.h>
+ #include <linux/pinctrl/consumer.h>
+-#ifdef CONFIG_STMMAC_DEBUG_FS
++#ifdef CONFIG_DEBUG_FS
+ #include <linux/debugfs.h>
+ #include <linux/seq_file.h>
+-#endif /* CONFIG_STMMAC_DEBUG_FS */
++#endif /* CONFIG_DEBUG_FS */
+ #include <linux/net_tstamp.h>
+ #include "stmmac_ptp.h"
+ #include "stmmac.h"
+ #include <linux/reset.h>
++#include <linux/of_mdio.h>
+
+ #define STMMAC_ALIGN(x) L1_CACHE_ALIGN(x)
+
+@@ -116,17 +117,17 @@ MODULE_PARM_DESC(chain_mode, "To use cha
+
+ static irqreturn_t stmmac_interrupt(int irq, void *dev_id);
+
+-#ifdef CONFIG_STMMAC_DEBUG_FS
++#ifdef CONFIG_DEBUG_FS
+ static int stmmac_init_fs(struct net_device *dev);
+-static void stmmac_exit_fs(void);
++static void stmmac_exit_fs(struct net_device *dev);
+ #endif
+
+ #define STMMAC_COAL_TIMER(x) (jiffies + usecs_to_jiffies(x))
+
+ /**
+ * stmmac_verify_args - verify the driver parameters.
+- * Description: it verifies if some wrong parameter is passed to the driver.
+- * Note that wrong parameters are replaced with the default values.
++ * Description: it checks the driver parameters and set a default in case of
++ * errors.
+ */
+ static void stmmac_verify_args(void)
+ {
+@@ -191,14 +192,8 @@ static void stmmac_clk_csr_set(struct st
+
+ static void print_pkt(unsigned char *buf, int len)
+ {
+- int j;
+- pr_debug("len = %d byte, buf addr: 0x%p", len, buf);
+- for (j = 0; j < len; j++) {
+- if ((j % 16) == 0)
+- pr_debug("\n %03x:", j);
+- pr_debug(" %02x", buf[j]);
+- }
+- pr_debug("\n");
++ pr_debug("len = %d byte, buf addr: 0x%p\n", len, buf);
++ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len);
+ }
+
+ /* minimum number of free TX descriptors required to wake up TX process */
+@@ -210,7 +205,7 @@ static inline u32 stmmac_tx_avail(struct
+ }
+
+ /**
+- * stmmac_hw_fix_mac_speed: callback for speed selection
++ * stmmac_hw_fix_mac_speed - callback for speed selection
+ * @priv: driver private structure
+ * Description: on some platforms (e.g. ST), some HW system configuraton
+ * registers have to be set according to the link speed negotiated.
+@@ -224,9 +219,10 @@ static inline void stmmac_hw_fix_mac_spe
+ }
+
+ /**
+- * stmmac_enable_eee_mode: Check and enter in LPI mode
++ * stmmac_enable_eee_mode - check and enter in LPI mode
+ * @priv: driver private structure
+- * Description: this function is to verify and enter in LPI mode for EEE.
++ * Description: this function is to verify and enter in LPI mode in case of
++ * EEE.
+ */
+ static void stmmac_enable_eee_mode(struct stmmac_priv *priv)
+ {
+@@ -237,7 +233,7 @@ static void stmmac_enable_eee_mode(struc
+ }
+
+ /**
+- * stmmac_disable_eee_mode: disable/exit from EEE
++ * stmmac_disable_eee_mode - disable and exit from LPI mode
+ * @priv: driver private structure
+ * Description: this function is to exit and disable EEE in case of
+ * LPI state is true. This is called by the xmit.
+@@ -250,7 +246,7 @@ void stmmac_disable_eee_mode(struct stmm
+ }
+
+ /**
+- * stmmac_eee_ctrl_timer: EEE TX SW timer.
++ * stmmac_eee_ctrl_timer - EEE TX SW timer.
+ * @arg : data hook
+ * Description:
+ * if there is no data transfer and if we are not in LPI state,
+@@ -265,13 +261,12 @@ static void stmmac_eee_ctrl_timer(unsign
+ }
+
+ /**
+- * stmmac_eee_init: init EEE
++ * stmmac_eee_init - init EEE
+ * @priv: driver private structure
+ * Description:
+- * If the EEE support has been enabled while configuring the driver,
+- * if the GMAC actually supports the EEE (from the HW cap reg) and the
+- * phy can also manage EEE, so enable the LPI state and start the timer
+- * to verify if the tx path can enter in LPI state.
++ * if the GMAC supports the EEE (from the HW cap reg) and the phy device
++ * can also manage EEE, this function enable the LPI state and start related
++ * timer.
+ */
+ bool stmmac_eee_init(struct stmmac_priv *priv)
+ {
+@@ -316,11 +311,11 @@ bool stmmac_eee_init(struct stmmac_priv
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!priv->eee_active) {
+ priv->eee_active = 1;
+- init_timer(&priv->eee_ctrl_timer);
+- priv->eee_ctrl_timer.function = stmmac_eee_ctrl_timer;
+- priv->eee_ctrl_timer.data = (unsigned long)priv;
+- priv->eee_ctrl_timer.expires = STMMAC_LPI_T(eee_timer);
+- add_timer(&priv->eee_ctrl_timer);
++ setup_timer(&priv->eee_ctrl_timer,
++ stmmac_eee_ctrl_timer,
++ (unsigned long)priv);
++ mod_timer(&priv->eee_ctrl_timer,
++ STMMAC_LPI_T(eee_timer));
+
+ priv->hw->mac->set_eee_timer(priv->hw,
+ STMMAC_DEFAULT_LIT_LS,
+@@ -338,7 +333,7 @@ out:
+ return ret;
+ }
+
+-/* stmmac_get_tx_hwtstamp: get HW TX timestamps
++/* stmmac_get_tx_hwtstamp - get HW TX timestamps
+ * @priv: driver private structure
+ * @entry : descriptor index to be used.
+ * @skb : the socket buffer
+@@ -380,7 +375,7 @@ static void stmmac_get_tx_hwtstamp(struc
+ return;
+ }
+
+-/* stmmac_get_rx_hwtstamp: get HW RX timestamps
++/* stmmac_get_rx_hwtstamp - get HW RX timestamps
+ * @priv: driver private structure
+ * @entry : descriptor index to be used.
+ * @skb : the socket buffer
+@@ -615,7 +610,7 @@ static int stmmac_hwtstamp_ioctl(struct
+ * where, freq_div_ratio = clk_ptp_ref_i/50MHz
+ * hence, addend = ((2^32) * 50MHz)/clk_ptp_ref_i;
+ * NOTE: clk_ptp_ref_i should be >= 50MHz to
+- * achive 20ns accuracy.
++ * achieve 20ns accuracy.
+ *
+ * 2^x * y == (y << x), hence
+ * 2^32 * 50000000 ==> (50000000 << 32)
+@@ -636,11 +631,11 @@ static int stmmac_hwtstamp_ioctl(struct
+ }
+
+ /**
+- * stmmac_init_ptp: init PTP
++ * stmmac_init_ptp - init PTP
+ * @priv: driver private structure
+- * Description: this is to verify if the HW supports the PTPv1 or v2.
++ * Description: this is to verify if the HW supports the PTPv1 or PTPv2.
+ * This is done by looking at the HW cap. register.
+- * Also it registers the ptp driver.
++ * This function also registers the ptp driver.
+ */
+ static int stmmac_init_ptp(struct stmmac_priv *priv)
+ {
+@@ -682,9 +677,13 @@ static void stmmac_release_ptp(struct st
+ }
+
+ /**
+- * stmmac_adjust_link
++ * stmmac_adjust_link - adjusts the link parameters
+ * @dev: net device structure
+- * Description: it adjusts the link parameters.
++ * Description: this is the helper called by the physical abstraction layer
++ * drivers to communicate the phy link status. According the speed and duplex
++ * this driver can invoke registered glue-logic as well.
++ * It also invoke the eee initialization because it could happen when switch
++ * on different networks (that are eee capable).
+ */
+ static void stmmac_adjust_link(struct net_device *dev)
+ {
+@@ -774,7 +773,7 @@ static void stmmac_adjust_link(struct ne
+ }
+
+ /**
+- * stmmac_check_pcs_mode: verify if RGMII/SGMII is supported
++ * stmmac_check_pcs_mode - verify if RGMII/SGMII is supported
+ * @priv: driver private structure
+ * Description: this is to verify if the HW supports the PCS.
+ * Physical Coding Sublayer (PCS) interface that can be used when the MAC is
+@@ -818,21 +817,31 @@ static int stmmac_init_phy(struct net_de
+ priv->speed = 0;
+ priv->oldduplex = -1;
+
+- if (priv->plat->phy_bus_name)
+- snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
+- priv->plat->phy_bus_name, priv->plat->bus_id);
+- else
+- snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
+- priv->plat->bus_id);
++ if (priv->plat->phy_node) {
++ phydev = of_phy_connect(dev, priv->plat->phy_node,
++ &stmmac_adjust_link, 0, interface);
++ } else {
++ if (priv->plat->phy_bus_name)
++ snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
++ priv->plat->phy_bus_name, priv->plat->bus_id);
++ else
++ snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
++ priv->plat->bus_id);
+
+- snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
+- priv->plat->phy_addr);
+- pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id_fmt);
++ snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
++ priv->plat->phy_addr);
++ pr_debug("stmmac_init_phy: trying to attach to %s\n",
++ phy_id_fmt);
+
+- phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, interface);
++ phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link,
++ interface);
++ }
+
+- if (IS_ERR(phydev)) {
++ if (IS_ERR_OR_NULL(phydev)) {
+ pr_err("%s: Could not attach to PHY\n", dev->name);
++ if (!phydev)
++ return -ENODEV;
++
+ return PTR_ERR(phydev);
+ }
+
+@@ -850,7 +859,7 @@ static int stmmac_init_phy(struct net_de
+ * device as well.
+ * Note: phydev->phy_id is the result of reading the UID PHY registers.
+ */
+- if (phydev->phy_id == 0) {
++ if (!priv->plat->phy_node && phydev->phy_id == 0) {
+ phy_disconnect(phydev);
+ return -ENODEV;
+ }
+@@ -863,7 +872,7 @@ static int stmmac_init_phy(struct net_de
+ }
+
+ /**
+- * stmmac_display_ring: display ring
++ * stmmac_display_ring - display ring
+ * @head: pointer to the head of the ring passed.
+ * @size: size of the ring.
+ * @extend_desc: to verify if extended descriptors are used.
+@@ -931,7 +940,7 @@ static int stmmac_set_bfsize(int mtu, in
+ }
+
+ /**
+- * stmmac_clear_descriptors: clear descriptors
++ * stmmac_clear_descriptors - clear descriptors
+ * @priv: driver private structure
+ * Description: this function is called to clear the tx and rx descriptors
+ * in case of both basic and extended descriptors are used.
+@@ -963,18 +972,25 @@ static void stmmac_clear_descriptors(str
+ (i == txsize - 1));
+ }
+
++/**
++ * stmmac_init_rx_buffers - init the RX descriptor buffer.
++ * @priv: driver private structure
++ * @p: descriptor pointer
++ * @i: descriptor index
++ * @flags: gfp flag.
++ * Description: this function is called to allocate a receive buffer, perform
++ * the DMA mapping and init the descriptor.
++ */
+ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
+ int i, gfp_t flags)
+ {
+ struct sk_buff *skb;
+
+- skb = __netdev_alloc_skb(priv->dev, priv->dma_buf_sz + NET_IP_ALIGN,
+- flags);
++ skb = __netdev_alloc_skb_ip_align(priv->dev, priv->dma_buf_sz, flags);
+ if (!skb) {
+ pr_err("%s: Rx init fails; skb is NULL\n", __func__);
+ return -ENOMEM;
+ }
+- skb_reserve(skb, NET_IP_ALIGN);
+ priv->rx_skbuff[i] = skb;
+ priv->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
+ priv->dma_buf_sz,
+@@ -1007,7 +1023,8 @@ static void stmmac_free_rx_buffers(struc
+ /**
+ * init_dma_desc_rings - init the RX/TX descriptor rings
+ * @dev: net device structure
+- * Description: this function initializes the DMA RX/TX descriptors
++ * @flags: gfp flag.
++ * Description: this function initializes the DMA RX/TX descriptors
+ * and allocates the socket buffers. It suppors the chained and ring
+ * modes.
+ */
+@@ -1089,6 +1106,7 @@ static int init_dma_desc_rings(struct ne
+
+ priv->dirty_tx = 0;
+ priv->cur_tx = 0;
++ netdev_reset_queue(priv->dev);
+
+ stmmac_clear_descriptors(priv);
+
+@@ -1144,6 +1162,14 @@ static void dma_free_tx_skbufs(struct st
+ }
+ }
+
++/**
++ * alloc_dma_desc_resources - alloc TX/RX resources.
++ * @priv: private structure
++ * Description: according to which descriptor can be used (extend or basic)
++ * this function allocates the resources for TX and RX paths. In case of
++ * reception, for example, it pre-allocated the RX socket buffer in order to
++ * allow zero-copy mechanism.
++ */
+ static int alloc_dma_desc_resources(struct stmmac_priv *priv)
+ {
+ unsigned int txsize = priv->dma_tx_size;
+@@ -1255,13 +1281,15 @@ static void free_dma_desc_resources(stru
+ /**
+ * stmmac_dma_operation_mode - HW DMA operation mode
+ * @priv: driver private structure
+- * Description: it sets the DMA operation mode: tx/rx DMA thresholds
+- * or Store-And-Forward capability.
++ * Description: it is used for configuring the DMA operation mode register in
++ * order to program the tx/rx DMA thresholds or Store-And-Forward mode.
+ */
+ static void stmmac_dma_operation_mode(struct stmmac_priv *priv)
+ {
++ int rxfifosz = priv->plat->rx_fifo_size;
++
+ if (priv->plat->force_thresh_dma_mode)
+- priv->hw->dma->dma_mode(priv->ioaddr, tc, tc);
++ priv->hw->dma->dma_mode(priv->ioaddr, tc, tc, rxfifosz);
+ else if (priv->plat->force_sf_dma_mode || priv->plat->tx_coe) {
+ /*
+ * In case of GMAC, SF mode can be enabled
+@@ -1270,20 +1298,23 @@ static void stmmac_dma_operation_mode(st
+ * 2) There is no bugged Jumbo frame support
+ * that needs to not insert csum in the TDES.
+ */
+- priv->hw->dma->dma_mode(priv->ioaddr, SF_DMA_MODE, SF_DMA_MODE);
+- tc = SF_DMA_MODE;
++ priv->hw->dma->dma_mode(priv->ioaddr, SF_DMA_MODE, SF_DMA_MODE,
++ rxfifosz);
++ priv->xstats.threshold = SF_DMA_MODE;
+ } else
+- priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE);
++ priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE,
++ rxfifosz);
+ }
+
+ /**
+- * stmmac_tx_clean:
++ * stmmac_tx_clean - to manage the transmission completion
+ * @priv: driver private structure
+- * Description: it reclaims resources after transmission completes.
++ * Description: it reclaims the transmit resources after transmission completes.
+ */
+ static void stmmac_tx_clean(struct stmmac_priv *priv)
+ {
+ unsigned int txsize = priv->dma_tx_size;
++ unsigned int bytes_compl = 0, pkts_compl = 0;
+
+ spin_lock(&priv->tx_lock);
+
+@@ -1340,6 +1371,8 @@ static void stmmac_tx_clean(struct stmma
+ priv->hw->mode->clean_desc3(priv, p);
+
+ if (likely(skb != NULL)) {
++ pkts_compl++;
++ bytes_compl += skb->len;
+ dev_consume_skb_any(skb);
+ priv->tx_skbuff[entry] = NULL;
+ }
+@@ -1348,6 +1381,9 @@ static void stmmac_tx_clean(struct stmma
+
+ priv->dirty_tx++;
+ }
++
++ netdev_completed_queue(priv->dev, pkts_compl, bytes_compl);
++
+ if (unlikely(netif_queue_stopped(priv->dev) &&
+ stmmac_tx_avail(priv) > STMMAC_TX_THRESH(priv))) {
+ netif_tx_lock(priv->dev);
+@@ -1378,10 +1414,10 @@ static inline void stmmac_disable_dma_ir
+ }
+
+ /**
+- * stmmac_tx_err: irq tx error mng function
++ * stmmac_tx_err - to manage the tx error
+ * @priv: driver private structure
+ * Description: it cleans the descriptors and restarts the transmission
+- * in case of errors.
++ * in case of transmission errors.
+ */
+ static void stmmac_tx_err(struct stmmac_priv *priv)
+ {
+@@ -1402,6 +1438,7 @@ static void stmmac_tx_err(struct stmmac_
+ (i == txsize - 1));
+ priv->dirty_tx = 0;
+ priv->cur_tx = 0;
++ netdev_reset_queue(priv->dev);
+ priv->hw->dma->start_tx(priv->ioaddr);
+
+ priv->dev->stats.tx_errors++;
+@@ -1409,16 +1446,16 @@ static void stmmac_tx_err(struct stmmac_
+ }
+
+ /**
+- * stmmac_dma_interrupt: DMA ISR
++ * stmmac_dma_interrupt - DMA ISR
+ * @priv: driver private structure
+ * Description: this is the DMA ISR. It is called by the main ISR.
+- * It calls the dwmac dma routine to understand which type of interrupt
+- * happened. In case of there is a Normal interrupt and either TX or RX
+- * interrupt happened so the NAPI is scheduled.
++ * It calls the dwmac dma routine and schedule poll method in case of some
++ * work can be done.
+ */
+ static void stmmac_dma_interrupt(struct stmmac_priv *priv)
+ {
+ int status;
++ int rxfifosz = priv->plat->rx_fifo_size;
+
+ status = priv->hw->dma->dma_interrupt(priv->ioaddr, &priv->xstats);
+ if (likely((status & handle_rx)) || (status & handle_tx)) {
+@@ -1429,9 +1466,15 @@ static void stmmac_dma_interrupt(struct
+ }
+ if (unlikely(status & tx_hard_error_bump_tc)) {
+ /* Try to bump up the dma threshold on this failure */
+- if (unlikely(tc != SF_DMA_MODE) && (tc <= 256)) {
++ if (unlikely(priv->xstats.threshold != SF_DMA_MODE) &&
++ (tc <= 256)) {
+ tc += 64;
+- priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE);
++ if (priv->plat->force_thresh_dma_mode)
++ priv->hw->dma->dma_mode(priv->ioaddr, tc, tc,
++ rxfifosz);
++ else
++ priv->hw->dma->dma_mode(priv->ioaddr, tc,
++ SF_DMA_MODE, rxfifosz);
+ priv->xstats.threshold = tc;
+ }
+ } else if (unlikely(status == tx_hard_error))
+@@ -1457,6 +1500,12 @@ static void stmmac_mmc_setup(struct stmm
+ pr_info(" No MAC Management Counters available\n");
+ }
+
++/**
++ * stmmac_get_synopsys_id - return the SYINID.
++ * @priv: driver private structure
++ * Description: this simple function is to decode and return the SYINID
++ * starting from the HW core register.
++ */
+ static u32 stmmac_get_synopsys_id(struct stmmac_priv *priv)
+ {
+ u32 hwid = priv->hw->synopsys_uid;
+@@ -1475,11 +1524,11 @@ static u32 stmmac_get_synopsys_id(struct
+ }
+
+ /**
+- * stmmac_selec_desc_mode: to select among: normal/alternate/extend descriptors
++ * stmmac_selec_desc_mode - to select among: normal/alternate/extend descriptors
+ * @priv: driver private structure
+ * Description: select the Enhanced/Alternate or Normal descriptors.
+- * In case of Enhanced/Alternate, it looks at the extended descriptors are
+- * supported by the HW cap. register.
++ * In case of Enhanced/Alternate, it checks if the extended descriptors are
++ * supported by the HW capability register.
+ */
+ static void stmmac_selec_desc_mode(struct stmmac_priv *priv)
+ {
+@@ -1501,7 +1550,7 @@ static void stmmac_selec_desc_mode(struc
+ }
+
+ /**
+- * stmmac_get_hw_features: get MAC capabilities from the HW cap. register.
++ * stmmac_get_hw_features - get MAC capabilities from the HW cap. register.
+ * @priv: driver private structure
+ * Description:
+ * new GMAC chip generations have a new register to indicate the
+@@ -1559,7 +1608,7 @@ static int stmmac_get_hw_features(struct
+ }
+
+ /**
+- * stmmac_check_ether_addr: check if the MAC addr is valid
++ * stmmac_check_ether_addr - check if the MAC addr is valid
+ * @priv: driver private structure
+ * Description:
+ * it is to verify if the MAC address is valid, in case of failures it
+@@ -1578,7 +1627,7 @@ static void stmmac_check_ether_addr(stru
+ }
+
+ /**
+- * stmmac_init_dma_engine: DMA init.
++ * stmmac_init_dma_engine - DMA init.
+ * @priv: driver private structure
+ * Description:
+ * It inits the DMA invoking the specific MAC/GMAC callback.
+@@ -1607,7 +1656,7 @@ static int stmmac_init_dma_engine(struct
+ }
+
+ /**
+- * stmmac_tx_timer: mitigation sw timer for tx.
++ * stmmac_tx_timer - mitigation sw timer for tx.
+ * @data: data pointer
+ * Description:
+ * This is the timer handler to directly invoke the stmmac_tx_clean.
+@@ -1620,7 +1669,7 @@ static void stmmac_tx_timer(unsigned lon
+ }
+
+ /**
+- * stmmac_init_tx_coalesce: init tx mitigation options.
++ * stmmac_init_tx_coalesce - init tx mitigation options.
+ * @priv: driver private structure
+ * Description:
+ * This inits the transmit coalesce parameters: i.e. timer rate,
+@@ -1639,15 +1688,18 @@ static void stmmac_init_tx_coalesce(stru
+ }
+
+ /**
+- * stmmac_hw_setup: setup mac in a usable state.
++ * stmmac_hw_setup - setup mac in a usable state.
+ * @dev : pointer to the device structure.
+ * Description:
+- * This function sets up the ip in a usable state.
++ * this is the main function to setup the HW in a usable state because the
++ * dma engine is reset, the core registers are configured (e.g. AXI,
++ * Checksum features, timers). The DMA is ready to start receiving and
++ * transmitting.
+ * Return value:
+ * 0 on success and an appropriate (-)ve integer as defined in errno.h
+ * file on failure.
+ */
+-static int stmmac_hw_setup(struct net_device *dev)
++static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
+ {
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int ret;
+@@ -1684,11 +1736,13 @@ static int stmmac_hw_setup(struct net_de
+
+ stmmac_mmc_setup(priv);
+
+- ret = stmmac_init_ptp(priv);
+- if (ret && ret != -EOPNOTSUPP)
+- pr_warn("%s: failed PTP initialisation\n", __func__);
++ if (init_ptp) {
++ ret = stmmac_init_ptp(priv);
++ if (ret && ret != -EOPNOTSUPP)
++ pr_warn("%s: failed PTP initialisation\n", __func__);
++ }
+
+-#ifdef CONFIG_STMMAC_DEBUG_FS
++#ifdef CONFIG_DEBUG_FS
+ ret = stmmac_init_fs(dev);
+ if (ret < 0)
+ pr_warn("%s: failed debugFS registration\n", __func__);
+@@ -1763,7 +1817,7 @@ static int stmmac_open(struct net_device
+ goto init_error;
+ }
+
+- ret = stmmac_hw_setup(dev);
++ ret = stmmac_hw_setup(dev, true);
+ if (ret < 0) {
+ pr_err("%s: Hw setup failed\n", __func__);
+ goto init_error;
+@@ -1870,8 +1924,8 @@ static int stmmac_release(struct net_dev
+
+ netif_carrier_off(dev);
+
+-#ifdef CONFIG_STMMAC_DEBUG_FS
+- stmmac_exit_fs();
++#ifdef CONFIG_DEBUG_FS
++ stmmac_exit_fs(dev);
+ #endif
+
+ stmmac_release_ptp(priv);
+@@ -1880,7 +1934,7 @@ static int stmmac_release(struct net_dev
+ }
+
+ /**
+- * stmmac_xmit: Tx entry point of the driver
++ * stmmac_xmit - Tx entry point of the driver
+ * @skb : the socket buffer
+ * @dev : device pointer
+ * Description : this is the tx entry point of the driver.
+@@ -2024,6 +2078,7 @@ static netdev_tx_t stmmac_xmit(struct sk
+ if (!priv->hwts_tx_en)
+ skb_tx_timestamp(skb);
+
++ netdev_sent_queue(dev, skb->len);
+ priv->hw->dma->enable_dma_transmission(priv->ioaddr);
+
+ spin_unlock(&priv->tx_lock);
+@@ -2055,7 +2110,7 @@ static void stmmac_rx_vlan(struct net_de
+
+
+ /**
+- * stmmac_rx_refill: refill used skb preallocated buffers
++ * stmmac_rx_refill - refill used skb preallocated buffers
+ * @priv: driver private structure
+ * Description : this is to reallocate the skb for the reception process
+ * that is based on zero-copy.
+@@ -2106,7 +2161,7 @@ static inline void stmmac_rx_refill(stru
+ }
+
+ /**
+- * stmmac_rx_refill: refill used skb preallocated buffers
++ * stmmac_rx - manage the receive process
+ * @priv: driver private structure
+ * @limit: napi bugget.
+ * Description : this the function called by the napi poll method.
+@@ -2375,8 +2430,11 @@ static int stmmac_set_features(struct ne
+ * @irq: interrupt number.
+ * @dev_id: to pass the net device pointer.
+ * Description: this is the main driver interrupt service routine.
+- * It calls the DMA ISR and also the core ISR to manage PMT, MMC, LPI
+- * interrupts.
++ * It can call:
++ * o DMA service routine (to manage incoming frame reception and transmission
++ * status)
++ * o Core interrupts to manage: remote wake-up, management counter, LPI
++ * interrupts.
+ */
+ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
+ {
+@@ -2457,10 +2515,8 @@ static int stmmac_ioctl(struct net_devic
+ return ret;
+ }
+
+-#ifdef CONFIG_STMMAC_DEBUG_FS
++#ifdef CONFIG_DEBUG_FS
+ static struct dentry *stmmac_fs_dir;
+-static struct dentry *stmmac_rings_status;
+-static struct dentry *stmmac_dma_cap;
+
+ static void sysfs_display_ring(void *head, int size, int extend_desc,
+ struct seq_file *seq)
+@@ -2599,36 +2655,39 @@ static const struct file_operations stmm
+
+ static int stmmac_init_fs(struct net_device *dev)
+ {
+- /* Create debugfs entries */
+- stmmac_fs_dir = debugfs_create_dir(STMMAC_RESOURCE_NAME, NULL);
++ struct stmmac_priv *priv = netdev_priv(dev);
+
+- if (!stmmac_fs_dir || IS_ERR(stmmac_fs_dir)) {
+- pr_err("ERROR %s, debugfs create directory failed\n",
+- STMMAC_RESOURCE_NAME);
++ /* Create per netdev entries */
++ priv->dbgfs_dir = debugfs_create_dir(dev->name, stmmac_fs_dir);
++
++ if (!priv->dbgfs_dir || IS_ERR(priv->dbgfs_dir)) {
++ pr_err("ERROR %s/%s, debugfs create directory failed\n",
++ STMMAC_RESOURCE_NAME, dev->name);
+
+ return -ENOMEM;
+ }
+
+ /* Entry to report DMA RX/TX rings */
+- stmmac_rings_status = debugfs_create_file("descriptors_status",
+- S_IRUGO, stmmac_fs_dir, dev,
+- &stmmac_rings_status_fops);
++ priv->dbgfs_rings_status =
++ debugfs_create_file("descriptors_status", S_IRUGO,
++ priv->dbgfs_dir, dev,
++ &stmmac_rings_status_fops);
+
+- if (!stmmac_rings_status || IS_ERR(stmmac_rings_status)) {
++ if (!priv->dbgfs_rings_status || IS_ERR(priv->dbgfs_rings_status)) {
+ pr_info("ERROR creating stmmac ring debugfs file\n");
+- debugfs_remove(stmmac_fs_dir);
++ debugfs_remove_recursive(priv->dbgfs_dir);
+
+ return -ENOMEM;
+ }
+
+ /* Entry to report the DMA HW features */
+- stmmac_dma_cap = debugfs_create_file("dma_cap", S_IRUGO, stmmac_fs_dir,
+- dev, &stmmac_dma_cap_fops);
++ priv->dbgfs_dma_cap = debugfs_create_file("dma_cap", S_IRUGO,
++ priv->dbgfs_dir,
++ dev, &stmmac_dma_cap_fops);
+
+- if (!stmmac_dma_cap || IS_ERR(stmmac_dma_cap)) {
++ if (!priv->dbgfs_dma_cap || IS_ERR(priv->dbgfs_dma_cap)) {
+ pr_info("ERROR creating stmmac MMC debugfs file\n");
+- debugfs_remove(stmmac_rings_status);
+- debugfs_remove(stmmac_fs_dir);
++ debugfs_remove_recursive(priv->dbgfs_dir);
+
+ return -ENOMEM;
+ }
+@@ -2636,13 +2695,13 @@ static int stmmac_init_fs(struct net_dev
+ return 0;
+ }
+
+-static void stmmac_exit_fs(void)
++static void stmmac_exit_fs(struct net_device *dev)
+ {
+- debugfs_remove(stmmac_rings_status);
+- debugfs_remove(stmmac_dma_cap);
+- debugfs_remove(stmmac_fs_dir);
++ struct stmmac_priv *priv = netdev_priv(dev);
++
++ debugfs_remove_recursive(priv->dbgfs_dir);
+ }
+-#endif /* CONFIG_STMMAC_DEBUG_FS */
++#endif /* CONFIG_DEBUG_FS */
+
+ static const struct net_device_ops stmmac_netdev_ops = {
+ .ndo_open = stmmac_open,
+@@ -2663,11 +2722,10 @@ static const struct net_device_ops stmma
+ /**
+ * stmmac_hw_init - Init the MAC device
+ * @priv: driver private structure
+- * Description: this function detects which MAC device
+- * (GMAC/MAC10-100) has to attached, checks the HW capability
+- * (if supported) and sets the driver's features (for example
+- * to use the ring or chaine mode or support the normal/enh
+- * descriptor structure).
++ * Description: this function is to configure the MAC device according to
++ * some platform parameters or the HW capability register. It prepares the
++ * driver to use either ring or chain modes and to setup either enhanced or
++ * normal descriptors.
+ */
+ static int stmmac_hw_init(struct stmmac_priv *priv)
+ {
+@@ -2714,7 +2772,11 @@ static int stmmac_hw_init(struct stmmac_
+ priv->plat->enh_desc = priv->dma_cap.enh_desc;
+ priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
+
+- priv->plat->tx_coe = priv->dma_cap.tx_coe;
++ /* TXCOE doesn't work in thresh DMA mode */
++ if (priv->plat->force_thresh_dma_mode)
++ priv->plat->tx_coe = 0;
++ else
++ priv->plat->tx_coe = priv->dma_cap.tx_coe;
+
+ if (priv->dma_cap.rx_coe_type2)
+ priv->plat->rx_coe = STMMAC_RX_COE_TYPE2;
+@@ -2747,13 +2809,15 @@ static int stmmac_hw_init(struct stmmac_
+ * stmmac_dvr_probe
+ * @device: device pointer
+ * @plat_dat: platform data pointer
+- * @addr: iobase memory address
++ * @res: stmmac resource pointer
+ * Description: this is the main probe function used to
+ * call the alloc_etherdev, allocate the priv structure.
++ * Return:
++ * returns 0 on success, otherwise errno.
+ */
+-struct stmmac_priv *stmmac_dvr_probe(struct device *device,
+- struct plat_stmmacenet_data *plat_dat,
+- void __iomem *addr)
++int stmmac_dvr_probe(struct device *device,
++ struct plat_stmmacenet_data *plat_dat,
++ struct stmmac_resources *res)
+ {
+ int ret = 0;
+ struct net_device *ndev = NULL;
+@@ -2761,7 +2825,7 @@ struct stmmac_priv *stmmac_dvr_probe(str
+
+ ndev = alloc_etherdev(sizeof(struct stmmac_priv));
+ if (!ndev)
+- return NULL;
++ return -ENOMEM;
+
+ SET_NETDEV_DEV(ndev, device);
+
+@@ -2772,8 +2836,17 @@ struct stmmac_priv *stmmac_dvr_probe(str
+ stmmac_set_ethtool_ops(ndev);
+ priv->pause = pause;
+ priv->plat = plat_dat;
+- priv->ioaddr = addr;
+- priv->dev->base_addr = (unsigned long)addr;
++ priv->ioaddr = res->addr;
++ priv->dev->base_addr = (unsigned long)res->addr;
++
++ priv->dev->irq = res->irq;
++ priv->wol_irq = res->wol_irq;
++ priv->lpi_irq = res->lpi_irq;
++
++ if (res->mac)
++ memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);
++
++ dev_set_drvdata(device, priv->dev);
+
+ /* Verify driver arguments */
+ stmmac_verify_args();
+@@ -2800,6 +2873,16 @@ struct stmmac_priv *stmmac_dvr_probe(str
+ }
+ clk_prepare_enable(priv->stmmac_clk);
+
++ priv->pclk = devm_clk_get(priv->device, "pclk");
++ if (IS_ERR(priv->pclk)) {
++ if (PTR_ERR(priv->pclk) == -EPROBE_DEFER) {
++ ret = -EPROBE_DEFER;
++ goto error_pclk_get;
++ }
++ priv->pclk = NULL;
++ }
++ clk_prepare_enable(priv->pclk);
++
+ priv->stmmac_rst = devm_reset_control_get(priv->device,
+ STMMAC_RESOURCE_NAME);
+ if (IS_ERR(priv->stmmac_rst)) {
+@@ -2878,19 +2961,22 @@ struct stmmac_priv *stmmac_dvr_probe(str
+ }
+ }
+
+- return priv;
++ return 0;
+
+ error_mdio_register:
+ unregister_netdev(ndev);
+ error_netdev_register:
+ netif_napi_del(&priv->napi);
+ error_hw_init:
++ clk_disable_unprepare(priv->pclk);
++error_pclk_get:
+ clk_disable_unprepare(priv->stmmac_clk);
+ error_clk_get:
+ free_netdev(ndev);
+
+- return ERR_PTR(ret);
++ return ret;
+ }
++EXPORT_SYMBOL_GPL(stmmac_dvr_probe);
+
+ /**
+ * stmmac_dvr_remove
+@@ -2908,20 +2994,28 @@ int stmmac_dvr_remove(struct net_device
+ priv->hw->dma->stop_tx(priv->ioaddr);
+
+ stmmac_set_mac(priv->ioaddr, false);
+- if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI &&
+- priv->pcs != STMMAC_PCS_RTBI)
+- stmmac_mdio_unregister(ndev);
+ netif_carrier_off(ndev);
+ unregister_netdev(ndev);
+ if (priv->stmmac_rst)
+ reset_control_assert(priv->stmmac_rst);
++ clk_disable_unprepare(priv->pclk);
+ clk_disable_unprepare(priv->stmmac_clk);
++ if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI &&
++ priv->pcs != STMMAC_PCS_RTBI)
++ stmmac_mdio_unregister(ndev);
+ free_netdev(ndev);
+
+ return 0;
+ }
++EXPORT_SYMBOL_GPL(stmmac_dvr_remove);
+
+-#ifdef CONFIG_PM
++/**
++ * stmmac_suspend - suspend callback
++ * @ndev: net device pointer
++ * Description: this is the function to suspend the device and it is called
++ * by the platform driver to stop the network queue, release the resources,
++ * program the PMT register (for WoL), clean and release driver resources.
++ */
+ int stmmac_suspend(struct net_device *ndev)
+ {
+ struct stmmac_priv *priv = netdev_priv(ndev);
+@@ -2954,6 +3048,7 @@ int stmmac_suspend(struct net_device *nd
+ stmmac_set_mac(priv->ioaddr, false);
+ pinctrl_pm_select_sleep_state(priv->device);
+ /* Disable clock in case of PWM is off */
++ clk_disable(priv->pclk);
+ clk_disable(priv->stmmac_clk);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+@@ -2963,7 +3058,14 @@ int stmmac_suspend(struct net_device *nd
+ priv->oldduplex = -1;
+ return 0;
+ }
++EXPORT_SYMBOL_GPL(stmmac_suspend);
+
++/**
++ * stmmac_resume - resume callback
++ * @ndev: net device pointer
++ * Description: when resume this function is invoked to setup the DMA and CORE
++ * in a usable state.
++ */
+ int stmmac_resume(struct net_device *ndev)
+ {
+ struct stmmac_priv *priv = netdev_priv(ndev);
+@@ -2987,6 +3089,7 @@ int stmmac_resume(struct net_device *nde
+ pinctrl_pm_select_default_state(priv->device);
+ /* enable the clk prevously disabled */
+ clk_enable(priv->stmmac_clk);
++ clk_enable(priv->pclk);
+ /* reset the phy so that it's ready */
+ if (priv->mii)
+ stmmac_mdio_reset(priv->mii);
+@@ -2995,7 +3098,7 @@ int stmmac_resume(struct net_device *nde
+ netif_device_attach(ndev);
+
+ init_dma_desc_rings(ndev, GFP_ATOMIC);
+- stmmac_hw_setup(ndev);
++ stmmac_hw_setup(ndev, false);
+ stmmac_init_tx_coalesce(priv);
+
+ napi_enable(&priv->napi);
+@@ -3009,37 +3112,7 @@ int stmmac_resume(struct net_device *nde
+
+ return 0;
+ }
+-#endif /* CONFIG_PM */
+-
+-/* Driver can be configured w/ and w/ both PCI and Platf drivers
+- * depending on the configuration selected.
+- */
+-static int __init stmmac_init(void)
+-{
+- int ret;
+-
+- ret = stmmac_register_platform();
+- if (ret)
+- goto err;
+- ret = stmmac_register_pci();
+- if (ret)
+- goto err_pci;
+- return 0;
+-err_pci:
+- stmmac_unregister_platform();
+-err:
+- pr_err("stmmac: driver registration failed\n");
+- return ret;
+-}
+-
+-static void __exit stmmac_exit(void)
+-{
+- stmmac_unregister_platform();
+- stmmac_unregister_pci();
+-}
+-
+-module_init(stmmac_init);
+-module_exit(stmmac_exit);
++EXPORT_SYMBOL_GPL(stmmac_resume);
+
+ #ifndef MODULE
+ static int __init stmmac_cmdline_opt(char *str)
+@@ -3094,6 +3167,35 @@ err:
+ __setup("stmmaceth=", stmmac_cmdline_opt);
+ #endif /* MODULE */
+
++static int __init stmmac_init(void)
++{
++#ifdef CONFIG_DEBUG_FS
++ /* Create debugfs main directory if it doesn't exist yet */
++ if (!stmmac_fs_dir) {
++ stmmac_fs_dir = debugfs_create_dir(STMMAC_RESOURCE_NAME, NULL);
++
++ if (!stmmac_fs_dir || IS_ERR(stmmac_fs_dir)) {
++ pr_err("ERROR %s, debugfs create directory failed\n",
++ STMMAC_RESOURCE_NAME);
++
++ return -ENOMEM;
++ }
++ }
++#endif
++
++ return 0;
++}
++
++static void __exit stmmac_exit(void)
++{
++#ifdef CONFIG_DEBUG_FS
++ debugfs_remove_recursive(stmmac_fs_dir);
++#endif
++}
++
++module_init(stmmac_init)
++module_exit(stmmac_exit)
++
+ MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet device driver");
+ MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
+ MODULE_LICENSE("GPL");
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+@@ -161,11 +161,16 @@ int stmmac_mdio_reset(struct mii_bus *bu
+
+ if (!gpio_request(reset_gpio, "mdio-reset")) {
+ gpio_direction_output(reset_gpio, active_low ? 1 : 0);
+- udelay(data->delays[0]);
++ if (data->delays[0])
++ msleep(DIV_ROUND_UP(data->delays[0], 1000));
++
+ gpio_set_value(reset_gpio, active_low ? 0 : 1);
+- udelay(data->delays[1]);
++ if (data->delays[1])
++ msleep(DIV_ROUND_UP(data->delays[1], 1000));
++
+ gpio_set_value(reset_gpio, active_low ? 1 : 0);
+- udelay(data->delays[2]);
++ if (data->delays[2])
++ msleep(DIV_ROUND_UP(data->delays[2], 1000));
+ }
+ }
+ #endif
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+@@ -24,38 +24,128 @@
+ *******************************************************************************/
+
+ #include <linux/pci.h>
++#include <linux/dmi.h>
++
+ #include "stmmac.h"
+
+-static struct plat_stmmacenet_data plat_dat;
+-static struct stmmac_mdio_bus_data mdio_data;
+-static struct stmmac_dma_cfg dma_cfg;
+-
+-static void stmmac_default_data(void)
+-{
+- memset(&plat_dat, 0, sizeof(struct plat_stmmacenet_data));
+-
+- plat_dat.bus_id = 1;
+- plat_dat.phy_addr = 0;
+- plat_dat.interface = PHY_INTERFACE_MODE_GMII;
+- plat_dat.clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
+- plat_dat.has_gmac = 1;
+- plat_dat.force_sf_dma_mode = 1;
+-
+- mdio_data.phy_reset = NULL;
+- mdio_data.phy_mask = 0;
+- plat_dat.mdio_bus_data = &mdio_data;
+-
+- dma_cfg.pbl = 32;
+- dma_cfg.burst_len = DMA_AXI_BLEN_256;
+- plat_dat.dma_cfg = &dma_cfg;
++/*
++ * This struct is used to associate PCI Function of MAC controller on a board,
++ * discovered via DMI, with the address of PHY connected to the MAC. The
++ * negative value of the address means that MAC controller is not connected
++ * with PHY.
++ */
++struct stmmac_pci_dmi_data {
++ const char *name;
++ unsigned int func;
++ int phy_addr;
++};
++
++struct stmmac_pci_info {
++ struct pci_dev *pdev;
++ int (*setup)(struct plat_stmmacenet_data *plat,
++ struct stmmac_pci_info *info);
++ struct stmmac_pci_dmi_data *dmi;
++};
++
++static int stmmac_pci_find_phy_addr(struct stmmac_pci_info *info)
++{
++ const char *name = dmi_get_system_info(DMI_BOARD_NAME);
++ unsigned int func = PCI_FUNC(info->pdev->devfn);
++ struct stmmac_pci_dmi_data *dmi;
++
++ /*
++ * Galileo boards with old firmware don't support DMI. We always return
++ * 1 here, so at least first found MAC controller would be probed.
++ */
++ if (!name)
++ return 1;
++
++ for (dmi = info->dmi; dmi->name && *dmi->name; dmi++) {
++ if (!strcmp(dmi->name, name) && dmi->func == func)
++ return dmi->phy_addr;
++ }
++
++ return -ENODEV;
++}
++
++static void stmmac_default_data(struct plat_stmmacenet_data *plat)
++{
++ plat->bus_id = 1;
++ plat->phy_addr = 0;
++ plat->interface = PHY_INTERFACE_MODE_GMII;
++ plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
++ plat->has_gmac = 1;
++ plat->force_sf_dma_mode = 1;
++
++ plat->mdio_bus_data->phy_reset = NULL;
++ plat->mdio_bus_data->phy_mask = 0;
++
++ plat->dma_cfg->pbl = 32;
++ plat->dma_cfg->burst_len = DMA_AXI_BLEN_256;
++
++ /* Set default value for multicast hash bins */
++ plat->multicast_filter_bins = HASH_TABLE_SIZE;
++
++ /* Set default value for unicast filter entries */
++ plat->unicast_filter_entries = 1;
++}
++
++static int quark_default_data(struct plat_stmmacenet_data *plat,
++ struct stmmac_pci_info *info)
++{
++ struct pci_dev *pdev = info->pdev;
++ int ret;
++
++ /*
++ * Refuse to load the driver and register net device if MAC controller
++ * does not connect to any PHY interface.
++ */
++ ret = stmmac_pci_find_phy_addr(info);
++ if (ret < 0)
++ return ret;
++
++ plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
++ plat->phy_addr = ret;
++ plat->interface = PHY_INTERFACE_MODE_RMII;
++ plat->clk_csr = 2;
++ plat->has_gmac = 1;
++ plat->force_sf_dma_mode = 1;
++
++ plat->mdio_bus_data->phy_reset = NULL;
++ plat->mdio_bus_data->phy_mask = 0;
++
++ plat->dma_cfg->pbl = 16;
++ plat->dma_cfg->burst_len = DMA_AXI_BLEN_256;
++ plat->dma_cfg->fixed_burst = 1;
+
+ /* Set default value for multicast hash bins */
+- plat_dat.multicast_filter_bins = HASH_TABLE_SIZE;
++ plat->multicast_filter_bins = HASH_TABLE_SIZE;
+
+ /* Set default value for unicast filter entries */
+- plat_dat.unicast_filter_entries = 1;
++ plat->unicast_filter_entries = 1;
++
++ return 0;
+ }
+
++static struct stmmac_pci_dmi_data quark_pci_dmi_data[] = {
++ {
++ .name = "Galileo",
++ .func = 6,
++ .phy_addr = 1,
++ },
++ {
++ .name = "GalileoGen2",
++ .func = 6,
++ .phy_addr = 1,
++ },
++ {}
++};
++
++static struct stmmac_pci_info quark_pci_info = {
++ .setup = quark_default_data,
++ .dmi = quark_pci_dmi_data,
++};
++
+ /**
+ * stmmac_pci_probe
+ *
+@@ -71,64 +161,65 @@ static void stmmac_default_data(void)
+ static int stmmac_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+ {
+- int ret = 0;
+- void __iomem *addr = NULL;
+- struct stmmac_priv *priv = NULL;
++ struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
++ struct plat_stmmacenet_data *plat;
++ struct stmmac_resources res;
+ int i;
++ int ret;
++
++ plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
++ if (!plat)
++ return -ENOMEM;
++
++ plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
++ sizeof(*plat->mdio_bus_data),
++ GFP_KERNEL);
++ if (!plat->mdio_bus_data)
++ return -ENOMEM;
++
++ plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
++ GFP_KERNEL);
++ if (!plat->dma_cfg)
++ return -ENOMEM;
+
+ /* Enable pci device */
+- ret = pci_enable_device(pdev);
++ ret = pcim_enable_device(pdev);
+ if (ret) {
+- pr_err("%s : ERROR: failed to enable %s device\n", __func__,
+- pci_name(pdev));
++ dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
++ __func__);
+ return ret;
+ }
+- if (pci_request_regions(pdev, STMMAC_RESOURCE_NAME)) {
+- pr_err("%s: ERROR: failed to get PCI region\n", __func__);
+- ret = -ENODEV;
+- goto err_out_req_reg_failed;
+- }
+
+ /* Get the base address of device */
+- for (i = 0; i <= 5; i++) {
++ for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ if (pci_resource_len(pdev, i) == 0)
+ continue;
+- addr = pci_iomap(pdev, i, 0);
+- if (addr == NULL) {
+- pr_err("%s: ERROR: cannot map register memory aborting",
+- __func__);
+- ret = -EIO;
+- goto err_out_map_failed;
+- }
++ ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
++ if (ret)
++ return ret;
+ break;
+ }
+- pci_set_master(pdev);
+-
+- stmmac_default_data();
+
+- priv = stmmac_dvr_probe(&(pdev->dev), &plat_dat, addr);
+- if (IS_ERR(priv)) {
+- pr_err("%s: main driver probe failed", __func__);
+- ret = PTR_ERR(priv);
+- goto err_out;
+- }
+- priv->dev->irq = pdev->irq;
+- priv->wol_irq = pdev->irq;
+-
+- pci_set_drvdata(pdev, priv->dev);
++ pci_set_master(pdev);
+
+- pr_debug("STMMAC platform driver registration completed");
++ if (info) {
++ info->pdev = pdev;
++ if (info->setup) {
++ ret = info->setup(plat, info);
++ if (ret)
++ return ret;
++ }
++ } else
++ stmmac_default_data(plat);
+
+- return 0;
++ pci_enable_msi(pdev);
+
+-err_out:
+- pci_clear_master(pdev);
+-err_out_map_failed:
+- pci_release_regions(pdev);
+-err_out_req_reg_failed:
+- pci_disable_device(pdev);
++ memset(&res, 0, sizeof(res));
++ res.addr = pcim_iomap_table(pdev)[i];
++ res.wol_irq = pdev->irq;
++ res.irq = pdev->irq;
+
+- return ret;
++ return stmmac_dvr_probe(&pdev->dev, plat, &res);
+ }
+
+ /**
+@@ -141,61 +232,55 @@ err_out_req_reg_failed:
+ static void stmmac_pci_remove(struct pci_dev *pdev)
+ {
+ struct net_device *ndev = pci_get_drvdata(pdev);
+- struct stmmac_priv *priv = netdev_priv(ndev);
+
+ stmmac_dvr_remove(ndev);
+-
+- pci_iounmap(pdev, priv->ioaddr);
+- pci_release_regions(pdev);
+- pci_disable_device(pdev);
+ }
+
+-#ifdef CONFIG_PM
+-static int stmmac_pci_suspend(struct pci_dev *pdev, pm_message_t state)
++#ifdef CONFIG_PM_SLEEP
++static int stmmac_pci_suspend(struct device *dev)
+ {
++ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *ndev = pci_get_drvdata(pdev);
+- int ret;
+-
+- ret = stmmac_suspend(ndev);
+- pci_save_state(pdev);
+- pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+- return ret;
++ return stmmac_suspend(ndev);
+ }
+
+-static int stmmac_pci_resume(struct pci_dev *pdev)
++static int stmmac_pci_resume(struct device *dev)
+ {
++ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *ndev = pci_get_drvdata(pdev);
+
+- pci_set_power_state(pdev, PCI_D0);
+- pci_restore_state(pdev);
+-
+ return stmmac_resume(ndev);
+ }
+ #endif
+
++static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
++
+ #define STMMAC_VENDOR_ID 0x700
++#define STMMAC_QUARK_ID 0x0937
+ #define STMMAC_DEVICE_ID 0x1108
+
+ static const struct pci_device_id stmmac_id_table[] = {
+ {PCI_DEVICE(STMMAC_VENDOR_ID, STMMAC_DEVICE_ID)},
+ {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_MAC)},
++ {PCI_VDEVICE(INTEL, STMMAC_QUARK_ID), (kernel_ulong_t)&quark_pci_info},
+ {}
+ };
+
+ MODULE_DEVICE_TABLE(pci, stmmac_id_table);
+
+-struct pci_driver stmmac_pci_driver = {
++static struct pci_driver stmmac_pci_driver = {
+ .name = STMMAC_RESOURCE_NAME,
+ .id_table = stmmac_id_table,
+ .probe = stmmac_pci_probe,
+ .remove = stmmac_pci_remove,
+-#ifdef CONFIG_PM
+- .suspend = stmmac_pci_suspend,
+- .resume = stmmac_pci_resume,
+-#endif
++ .driver = {
++ .pm = &stmmac_pm_ops,
++ },
+ };
+
++module_pci_driver(stmmac_pci_driver);
++
+ MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
+ MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
+ MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+@@ -23,41 +23,23 @@
+ *******************************************************************************/
+
+ #include <linux/platform_device.h>
++#include <linux/module.h>
+ #include <linux/io.h>
+ #include <linux/of.h>
+ #include <linux/of_net.h>
+ #include <linux/of_device.h>
+-#include "stmmac.h"
++#include <linux/of_mdio.h>
+
+-static const struct of_device_id stmmac_dt_ids[] = {
+-#ifdef CONFIG_DWMAC_MESON
+- { .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
+-#endif
+-#ifdef CONFIG_DWMAC_SUNXI
+- { .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
+-#endif
+-#ifdef CONFIG_DWMAC_STI
+- { .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
+- { .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},
+- { .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data},
+- { .compatible = "st,stih407-dwmac", .data = &stih4xx_dwmac_data},
+-#endif
+-#ifdef CONFIG_DWMAC_SOCFPGA
+- { .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data },
+-#endif
+- /* SoC specific glue layers should come before generic bindings */
+- { .compatible = "st,spear600-gmac"},
+- { .compatible = "snps,dwmac-3.610"},
+- { .compatible = "snps,dwmac-3.70a"},
+- { .compatible = "snps,dwmac-3.710"},
+- { .compatible = "snps,dwmac"},
+- { /* sentinel */ }
+-};
+-MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
++#include "stmmac.h"
++#include "stmmac_platform.h"
+
+ #ifdef CONFIG_OF
+
+-/* This function validates the number of Multicast filtering bins specified
++/**
++ * dwmac1000_validate_mcast_bins - validates the number of Multicast filter bins
++ * @mcast_bins: Multicast filtering bins
++ * Description:
++ * this function validates the number of Multicast filtering bins specified
+ * by the configuration through the device tree. The Synopsys GMAC supports
+ * 64 bins, 128 bins, or 256 bins. "bins" refer to the division of CRC
+ * number space. 64 bins correspond to 6 bits of the CRC, 128 corresponds
+@@ -83,7 +65,11 @@ static int dwmac1000_validate_mcast_bins
+ return x;
+ }
+
+-/* This function validates the number of Unicast address entries supported
++/**
++ * dwmac1000_validate_ucast_entries - validate the Unicast address entries
++ * @ucast_entries: number of Unicast address entries
++ * Description:
++ * This function validates the number of Unicast address entries supported
+ * by a particular Synopsys 10/100/1000 controller. The Synopsys controller
+ * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter
+ * logic. This function validates a valid, supported configuration is
+@@ -109,37 +95,25 @@ static int dwmac1000_validate_ucast_entr
+ return x;
+ }
+
+-static int stmmac_probe_config_dt(struct platform_device *pdev,
+- struct plat_stmmacenet_data *plat,
+- const char **mac)
++/**
++ * stmmac_probe_config_dt - parse device-tree driver parameters
++ * @pdev: platform_device structure
++ * @plat: driver data platform structure
++ * @mac: MAC address to use
++ * Description:
++ * this function is to read the driver parameters from device-tree and
++ * set some private fields that will be used by the main at runtime.
++ */
++struct plat_stmmacenet_data *
++stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
+ {
+ struct device_node *np = pdev->dev.of_node;
++ struct plat_stmmacenet_data *plat;
+ struct stmmac_dma_cfg *dma_cfg;
+- const struct of_device_id *device;
+
+- if (!np)
+- return -ENODEV;
+-
+- device = of_match_device(stmmac_dt_ids, &pdev->dev);
+- if (!device)
+- return -ENODEV;
+-
+- if (device->data) {
+- const struct stmmac_of_data *data = device->data;
+- plat->has_gmac = data->has_gmac;
+- plat->enh_desc = data->enh_desc;
+- plat->tx_coe = data->tx_coe;
+- plat->rx_coe = data->rx_coe;
+- plat->bugged_jumbo = data->bugged_jumbo;
+- plat->pmt = data->pmt;
+- plat->riwt_off = data->riwt_off;
+- plat->fix_mac_speed = data->fix_mac_speed;
+- plat->bus_setup = data->bus_setup;
+- plat->setup = data->setup;
+- plat->free = data->free;
+- plat->init = data->init;
+- plat->exit = data->exit;
+- }
++ plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
++ if (!plat)
++ return ERR_PTR(-ENOMEM);
+
+ *mac = of_get_mac_address(np);
+ plat->interface = of_get_phy_mode(np);
+@@ -155,13 +129,24 @@ static int stmmac_probe_config_dt(struct
+ /* Default to phy auto-detection */
+ plat->phy_addr = -1;
+
++ /* If we find a phy-handle property, use it as the PHY */
++ plat->phy_node = of_parse_phandle(np, "phy-handle", 0);
++
++ /* If phy-handle is not specified, check if we have a fixed-phy */
++ if (!plat->phy_node && of_phy_is_fixed_link(np)) {
++ if ((of_phy_register_fixed_link(np) < 0))
++ return ERR_PTR(-ENODEV);
++
++ plat->phy_node = of_node_get(np);
++ }
++
+ /* "snps,phy-addr" is not a standard property. Mark it as deprecated
+ * and warn of its use. Remove this when phy node support is added.
+ */
+ if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
+ dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");
+
+- if (plat->phy_bus_name)
++ if (plat->phy_node || plat->phy_bus_name)
+ plat->mdio_bus_data = NULL;
+ else
+ plat->mdio_bus_data =
+@@ -169,6 +154,10 @@ static int stmmac_probe_config_dt(struct
+ sizeof(struct stmmac_mdio_bus_data),
+ GFP_KERNEL);
+
++ of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size);
++
++ of_property_read_u32(np, "rx-fifo-depth", &plat->rx_fifo_size);
++
+ plat->force_sf_dma_mode =
+ of_property_read_bool(np, "snps,force_sf_dma_mode");
+
+@@ -177,6 +166,12 @@ static int stmmac_probe_config_dt(struct
+ */
+ plat->maxmtu = JUMBO_LEN;
+
++ /* Set default value for multicast hash bins */
++ plat->multicast_filter_bins = HASH_TABLE_SIZE;
++
++ /* Set default value for unicast filter entries */
++ plat->unicast_filter_entries = 1;
++
+ /*
+ * Currently only the properties needed on SPEAr600
+ * are provided. All other properties should be added
+@@ -215,14 +210,19 @@ static int stmmac_probe_config_dt(struct
+ if (of_find_property(np, "snps,pbl", NULL)) {
+ dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
+ GFP_KERNEL);
+- if (!dma_cfg)
+- return -ENOMEM;
++ if (!dma_cfg) {
++ of_node_put(np);
++ return ERR_PTR(-ENOMEM);
++ }
+ plat->dma_cfg = dma_cfg;
+ of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
+ dma_cfg->fixed_burst =
+ of_property_read_bool(np, "snps,fixed-burst");
+ dma_cfg->mixed_burst =
+ of_property_read_bool(np, "snps,mixed-burst");
++ of_property_read_u32(np, "snps,burst_len", &dma_cfg->burst_len);
++ if (dma_cfg->burst_len < 0 || dma_cfg->burst_len > 256)
++ dma_cfg->burst_len = 0;
+ }
+ plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode");
+ if (plat->force_thresh_dma_mode) {
+@@ -230,123 +230,60 @@ static int stmmac_probe_config_dt(struct
+ pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set.");
+ }
+
+- return 0;
++ return plat;
+ }
+ #else
+-static int stmmac_probe_config_dt(struct platform_device *pdev,
+- struct plat_stmmacenet_data *plat,
+- const char **mac)
++struct plat_stmmacenet_data *
++stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
+ {
+- return -ENOSYS;
++ return ERR_PTR(-ENOSYS);
+ }
+ #endif /* CONFIG_OF */
++EXPORT_SYMBOL_GPL(stmmac_probe_config_dt);
+
+-/**
+- * stmmac_pltfr_probe
+- * @pdev: platform device pointer
+- * Description: platform_device probe function. It allocates
+- * the necessary resources and invokes the main to init
+- * the net device, register the mdio bus etc.
+- */
+-static int stmmac_pltfr_probe(struct platform_device *pdev)
++int stmmac_get_platform_resources(struct platform_device *pdev,
++ struct stmmac_resources *stmmac_res)
+ {
+- int ret = 0;
+ struct resource *res;
+- struct device *dev = &pdev->dev;
+- void __iomem *addr = NULL;
+- struct stmmac_priv *priv = NULL;
+- struct plat_stmmacenet_data *plat_dat = NULL;
+- const char *mac = NULL;
+-
+- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+- addr = devm_ioremap_resource(dev, res);
+- if (IS_ERR(addr))
+- return PTR_ERR(addr);
+-
+- plat_dat = dev_get_platdata(&pdev->dev);
+-
+- if (!plat_dat)
+- plat_dat = devm_kzalloc(&pdev->dev,
+- sizeof(struct plat_stmmacenet_data),
+- GFP_KERNEL);
+- if (!plat_dat) {
+- pr_err("%s: ERROR: no memory", __func__);
+- return -ENOMEM;
+- }
+-
+- /* Set default value for multicast hash bins */
+- plat_dat->multicast_filter_bins = HASH_TABLE_SIZE;
+-
+- /* Set default value for unicast filter entries */
+- plat_dat->unicast_filter_entries = 1;
+-
+- if (pdev->dev.of_node) {
+- ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
+- if (ret) {
+- pr_err("%s: main dt probe failed", __func__);
+- return ret;
+- }
+- }
+-
+- /* Custom setup (if needed) */
+- if (plat_dat->setup) {
+- plat_dat->bsp_priv = plat_dat->setup(pdev);
+- if (IS_ERR(plat_dat->bsp_priv))
+- return PTR_ERR(plat_dat->bsp_priv);
+- }
+-
+- /* Custom initialisation (if needed)*/
+- if (plat_dat->init) {
+- ret = plat_dat->init(pdev, plat_dat->bsp_priv);
+- if (unlikely(ret))
+- return ret;
+- }
+
+- priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
+- if (IS_ERR(priv)) {
+- pr_err("%s: main driver probe failed", __func__);
+- return PTR_ERR(priv);
+- }
++ memset(stmmac_res, 0, sizeof(*stmmac_res));
+
+- /* Get MAC address if available (DT) */
+- if (mac)
+- memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
+-
+- /* Get the MAC information */
+- priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
+- if (priv->dev->irq < 0) {
+- if (priv->dev->irq != -EPROBE_DEFER) {
+- netdev_err(priv->dev,
+- "MAC IRQ configuration information not found\n");
++ /* Get IRQ information early to have an ability to ask for deferred
++ * probe if needed before we went too far with resource allocation.
++ */
++ stmmac_res->irq = platform_get_irq_byname(pdev, "macirq");
++ if (stmmac_res->irq < 0) {
++ if (stmmac_res->irq != -EPROBE_DEFER) {
++ dev_err(&pdev->dev,
++ "MAC IRQ configuration information not found\n");
+ }
+- return priv->dev->irq;
++ return stmmac_res->irq;
+ }
+
+- /*
+- * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
++ /* On some platforms e.g. SPEAr the wake up irq differs from the mac irq
+ * The external wake up irq can be passed through the platform code
+ * named as "eth_wake_irq"
+ *
+ * In case the wake up interrupt is not passed from the platform
+ * so the driver will continue to use the mac irq (ndev->irq)
+ */
+- priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
+- if (priv->wol_irq < 0) {
+- if (priv->wol_irq == -EPROBE_DEFER)
++ stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
++ if (stmmac_res->wol_irq < 0) {
++ if (stmmac_res->wol_irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+- priv->wol_irq = priv->dev->irq;
++ stmmac_res->wol_irq = stmmac_res->irq;
+ }
+
+- priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
+- if (priv->lpi_irq == -EPROBE_DEFER)
++ stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
++ if (stmmac_res->lpi_irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+- platform_set_drvdata(pdev, priv->dev);
+-
+- pr_debug("STMMAC platform driver registration completed");
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res);
+
+- return 0;
++ return PTR_ERR_OR_ZERO(stmmac_res->addr);
+ }
++EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);
+
+ /**
+ * stmmac_pltfr_remove
+@@ -354,7 +291,7 @@ static int stmmac_pltfr_probe(struct pla
+ * Description: this function calls the main to free the net resources
+ * and calls the platforms hook and release the resources (e.g. mem).
+ */
+-static int stmmac_pltfr_remove(struct platform_device *pdev)
++int stmmac_pltfr_remove(struct platform_device *pdev)
+ {
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+@@ -363,13 +300,18 @@ static int stmmac_pltfr_remove(struct pl
+ if (priv->plat->exit)
+ priv->plat->exit(pdev, priv->plat->bsp_priv);
+
+- if (priv->plat->free)
+- priv->plat->free(pdev, priv->plat->bsp_priv);
+-
+ return ret;
+ }
++EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
+
+-#ifdef CONFIG_PM
++#ifdef CONFIG_PM_SLEEP
++/**
++ * stmmac_pltfr_suspend
++ * @dev: device pointer
++ * Description: this function is invoked when suspend the driver and it direcly
++ * call the main suspend function and then, if required, on some platform, it
++ * can call an exit helper.
++ */
+ static int stmmac_pltfr_suspend(struct device *dev)
+ {
+ int ret;
+@@ -384,6 +326,13 @@ static int stmmac_pltfr_suspend(struct d
+ return ret;
+ }
+
++/**
++ * stmmac_pltfr_resume
++ * @dev: device pointer
++ * Description: this function is invoked when resume the driver before calling
++ * the main resume function, on some platforms, it can call own init helper
++ * if required.
++ */
+ static int stmmac_pltfr_resume(struct device *dev)
+ {
+ struct net_device *ndev = dev_get_drvdata(dev);
+@@ -395,23 +344,12 @@ static int stmmac_pltfr_resume(struct de
+
+ return stmmac_resume(ndev);
+ }
++#endif /* CONFIG_PM_SLEEP */
+
+-#endif /* CONFIG_PM */
+-
+-static SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops,
+- stmmac_pltfr_suspend, stmmac_pltfr_resume);
+-
+-struct platform_driver stmmac_pltfr_driver = {
+- .probe = stmmac_pltfr_probe,
+- .remove = stmmac_pltfr_remove,
+- .driver = {
+- .name = STMMAC_RESOURCE_NAME,
+- .owner = THIS_MODULE,
+- .pm = &stmmac_pltfr_pm_ops,
+- .of_match_table = of_match_ptr(stmmac_dt_ids),
+- },
+-};
++SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend,
++ stmmac_pltfr_resume);
++EXPORT_SYMBOL_GPL(stmmac_pltfr_pm_ops);
+
+-MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
++MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet platform support");
+ MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
+ MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
+@@ -0,0 +1,33 @@
++/*******************************************************************************
++ Copyright (C) 2007-2009 STMicroelectronics Ltd
++
++ This program is free software; you can redistribute it and/or modify it
++ under the terms and conditions of the GNU General Public License,
++ version 2, as published by the Free Software Foundation.
++
++ This program is distributed in the hope it will be useful, but WITHOUT
++ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ more details.
++
++ The full GNU General Public License is included in this distribution in
++ the file called "COPYING".
++
++ Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
++*******************************************************************************/
++
++#ifndef __STMMAC_PLATFORM_H__
++#define __STMMAC_PLATFORM_H__
++
++#include "stmmac.h"
++
++struct plat_stmmacenet_data *
++stmmac_probe_config_dt(struct platform_device *pdev, const char **mac);
++
++int stmmac_get_platform_resources(struct platform_device *pdev,
++ struct stmmac_resources *stmmac_res);
++
++int stmmac_pltfr_remove(struct platform_device *pdev);
++extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
++
++#endif /* __STMMAC_PLATFORM_H__ */
--- /dev/null
+From e81de9d28bd0421c236df322872e64edf4ee1852 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Mon, 11 May 2015 16:32:09 -0700
+Subject: [PATCH 7/8] ARM: dts: qcom: add mdio nodes to ap148 & db149
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 40 ++++++++++++++++++++++++++-
+ arch/arm/boot/dts/qcom-ipq8064-db149.dts | 46 ++++++++++++++++++++++++++++++++
+ 2 files changed, 85 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -19,8 +19,9 @@
+ };
+ };
+
+- alias {
++ aliases {
+ serial0 = &uart4;
++ mdio-gpio0 = &mdio0;
+ };
+
+ chosen {
+@@ -68,6 +69,15 @@
+ bias-bus-hold;
+ };
+ };
++
++ mdio0_pins: mdio0_pins {
++ mux {
++ pins = "gpio0", "gpio1";
++ function = "gpio";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
+ };
+
+ gsbi@16300000 {
+@@ -162,6 +172,34 @@
+
+ linux,part-probe = "qcom-smem";
+ };
++
++ mdio0: mdio {
++ compatible = "virtual,mdio-gpio";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++ pinctrl-0 = <&mdio0_pins>;
++ pinctrl-names = "default";
++
++ phy0: ethernet-phy@0 {
++ device_type = "ethernet-phy";
++ reg = <0>;
++ qca,ar8327-initvals = <
++ 0x00004 0x7600000 /* PAD0_MODE */
++ 0x00008 0x1000000 /* PAD5_MODE */
++ 0x0000c 0x80 /* PAD6_MODE */
++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
++ 0x000e0 0xc74164de /* SGMII_CTRL */
++ 0x0007c 0x4e /* PORT0_STATUS */
++ 0x00094 0x4e /* PORT6_STATUS */
++ >;
++ };
++
++ phy4: ethernet-phy@4 {
++ device_type = "ethernet-phy";
++ reg = <4>;
++ };
++ };
+ };
+ };
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -16,6 +16,7 @@
+
+ alias {
+ serial0 = &uart2;
++ mdio-gpio0 = &mdio0;
+ };
+
+ chosen {
+@@ -38,6 +39,15 @@
+ bias-none;
+ };
+ };
++
++ mdio0_pins: mdio0_pins {
++ mux {
++ pins = "gpio0", "gpio1";
++ function = "gpio";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
+ };
+
+ gsbi2: gsbi@12480000 {
+@@ -140,5 +150,44 @@
+ pcie2: pci@1b900000 {
+ status = "ok";
+ };
++
++ mdio0: mdio {
++ compatible = "virtual,mdio-gpio";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++
++ pinctrl-0 = <&mdio0_pins>;
++ pinctrl-names = "default";
++
++ phy0: ethernet-phy@0 {
++ device_type = "ethernet-phy";
++ reg = <0>;
++ qca,ar8327-initvals = <
++ 0x00004 0x7600000 /* PAD0_MODE */
++ 0x00008 0x1000000 /* PAD5_MODE */
++ 0x0000c 0x80 /* PAD6_MODE */
++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
++ 0x000e0 0xc74164de /* SGMII_CTRL */
++ 0x0007c 0x4e /* PORT0_STATUS */
++ 0x00094 0x4e /* PORT6_STATUS */
++ >;
++ };
++
++ phy4: ethernet-phy@4 {
++ device_type = "ethernet-phy";
++ reg = <4>;
++ };
++
++ phy6: ethernet-phy@6 {
++ device_type = "ethernet-phy";
++ reg = <6>;
++ };
++
++ phy7: ethernet-phy@7 {
++ device_type = "ethernet-phy";
++ reg = <7>;
++ };
++ };
+ };
+ };
--- /dev/null
+From cab1f4720e82f2e17eaeed9a9ad9e4f07c742977 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Mon, 11 May 2015 12:29:18 -0700
+Subject: [PATCH 8/8] ARM: dts: qcom: add gmac nodes to ipq806x platforms
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 31 ++++++++++++
+ arch/arm/boot/dts/qcom-ipq8064-db149.dts | 43 ++++++++++++++++
+ arch/arm/boot/dts/qcom-ipq8064.dtsi | 86 ++++++++++++++++++++++++++++++++
+ 3 files changed, 160 insertions(+)
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+@@ -78,6 +78,16 @@
+ bias-disable;
+ };
+ };
++
++ rgmii2_pins: rgmii2_pins {
++ mux {
++ pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
++ "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
++ function = "rgmii2";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
+ };
+
+ gsbi@16300000 {
+@@ -200,6 +210,31 @@
+ reg = <4>;
+ };
+ };
++
++ gmac1: ethernet@37200000 {
++ status = "ok";
++ phy-mode = "rgmii";
++ qcom,id = <1>;
++
++ pinctrl-0 = <&rgmii2_pins>;
++ pinctrl-names = "default";
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++
++ gmac2: ethernet@37400000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <2>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
+ };
+ };
+
+--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
++++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+@@ -48,6 +48,14 @@
+ bias-disable;
+ };
+ };
++
++ rgmii0_pins: rgmii0_pins {
++ mux {
++ pins = "gpio2", "gpio66";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
+ };
+
+ gsbi2: gsbi@12480000 {
+@@ -189,5 +197,40 @@
+ reg = <7>;
+ };
+ };
++
++ gmac0: ethernet@37000000 {
++ status = "ok";
++ phy-mode = "rgmii";
++ qcom,id = <0>;
++ phy-handle = <&phy4>;
++
++ pinctrl-0 = <&rgmii0_pins>;
++ pinctrl-names = "default";
++ };
++
++ gmac1: ethernet@37200000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <1>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++
++ gmac2: ethernet@37400000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <2>;
++ phy-handle = <&phy6>;
++ };
++
++ gmac3: ethernet@37600000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <3>;
++ phy-handle = <&phy7>;
++ };
+ };
+ };
+--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
+@@ -741,6 +741,92 @@
+ status = "disabled";
+ };
+
++ nss_common: syscon@03000000 {
++ compatible = "syscon";
++ reg = <0x03000000 0x0000FFFF>;
++ };
++
++ qsgmii_csr: syscon@1bb00000 {
++ compatible = "syscon";
++ reg = <0x1bb00000 0x000001FF>;
++ };
++
++ gmac0: ethernet@37000000 {
++ device_type = "network";
++ compatible = "qcom,ipq806x-gmac";
++ reg = <0x37000000 0x200000>;
++ interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
++ interrupt-names = "macirq";
++
++ qcom,nss-common = <&nss_common>;
++ qcom,qsgmii-csr = <&qsgmii_csr>;
++
++ clocks = <&gcc GMAC_CORE1_CLK>;
++ clock-names = "stmmaceth";
++
++ resets = <&gcc GMAC_CORE1_RESET>;
++ reset-names = "stmmaceth";
++
++ status = "disabled";
++ };
++
++ gmac1: ethernet@37200000 {
++ device_type = "network";
++ compatible = "qcom,ipq806x-gmac";
++ reg = <0x37200000 0x200000>;
++ interrupts = <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;
++ interrupt-names = "macirq";
++
++ qcom,nss-common = <&nss_common>;
++ qcom,qsgmii-csr = <&qsgmii_csr>;
++
++ clocks = <&gcc GMAC_CORE2_CLK>;
++ clock-names = "stmmaceth";
++
++ resets = <&gcc GMAC_CORE2_RESET>;
++ reset-names = "stmmaceth";
++
++ status = "disabled";
++ };
++
++ gmac2: ethernet@37400000 {
++ device_type = "network";
++ compatible = "qcom,ipq806x-gmac";
++ reg = <0x37400000 0x200000>;
++ interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>;
++ interrupt-names = "macirq";
++
++ qcom,nss-common = <&nss_common>;
++ qcom,qsgmii-csr = <&qsgmii_csr>;
++
++ clocks = <&gcc GMAC_CORE3_CLK>;
++ clock-names = "stmmaceth";
++
++ resets = <&gcc GMAC_CORE3_RESET>;
++ reset-names = "stmmaceth";
++
++ status = "disabled";
++ };
++
++ gmac3: ethernet@37600000 {
++ device_type = "network";
++ compatible = "qcom,ipq806x-gmac";
++ reg = <0x37600000 0x200000>;
++ interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>;
++ interrupt-names = "macirq";
++
++ qcom,nss-common = <&nss_common>;
++ qcom,qsgmii-csr = <&qsgmii_csr>;
++
++ clocks = <&gcc GMAC_CORE4_CLK>;
++ clock-names = "stmmaceth";
++
++ resets = <&gcc GMAC_CORE4_RESET>;
++ reset-names = "stmmaceth";
++
++ status = "disabled";
++ };
++
+ };
+
+ sfpb_mutex: sfpb-mutex {
--- /dev/null
+From 5bf2dabde1fa3af0c9082b42b6847ef3fd198b13 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Sun, 9 Aug 2015 12:53:55 +0200
+Subject: [PATCH] stmac: platform: add support for retreiving mac from mtd
+
+---
+ drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+@@ -116,6 +116,19 @@ stmmac_probe_config_dt(struct platform_d
+ return ERR_PTR(-ENOMEM);
+
+ *mac = of_get_mac_address(np);
++ if (!*mac) {
++ u8 mtd_mac[ETH_ALEN];
++ int ret;
++
++ ret = of_get_mac_address_mtd(np, mtd_mac);
++ if (ret == -EPROBE_DEFER)
++ return ERR_PTR(ret);
++
++ if (is_valid_ether_addr(mtd_mac))
++ *mac = devm_kmemdup(&pdev->dev, mtd_mac, ETH_ALEN,
++ GFP_KERNEL);
++ }
++
+ plat->interface = of_get_phy_mode(np);
+
+ /* Get max speed of operation from device tree */
--- /dev/null
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+@@ -259,6 +259,7 @@ static int ipq806x_gmac_probe(struct pla
+ {
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
++ struct stmmac_dma_cfg *dma_cfg;
+ struct device *dev = &pdev->dev;
+ struct ipq806x_gmac *gmac;
+ int val;
+@@ -348,6 +349,17 @@ static int ipq806x_gmac_probe(struct pla
+ plat_dat->bsp_priv = gmac;
+ plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
+
++ dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
++ GFP_KERNEL);
++
++ dma_cfg->pbl = 32;
++ dma_cfg->aal = 1;
++ dma_cfg->burst_len = DMA_AXI_BLEN_16 |
++ (7 << DMA_AXI_RD_OSR_LMT_SHIFT) |
++ (7 << DMA_AXI_WR_OSR_LMT_SHIFT);
++
++ plat_dat->dma_cfg = dma_cfg;
++
+ return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ }
+
+--- a/include/linux/stmmac.h
++++ b/include/linux/stmmac.h
+@@ -73,6 +73,9 @@
+ | DMA_AXI_BLEN_32 | DMA_AXI_BLEN_64 \
+ | DMA_AXI_BLEN_128 | DMA_AXI_BLEN_256)
+
++#define DMA_AXI_RD_OSR_LMT_SHIFT 16
++#define DMA_AXI_WR_OSR_LMT_SHIFT 20
++
+ /* Platfrom data for platform device structure's platform_data field */
+
+ struct stmmac_mdio_bus_data {
+@@ -88,6 +91,7 @@ struct stmmac_mdio_bus_data {
+
+ struct stmmac_dma_cfg {
+ int pbl;
++ int aal;
+ int fixed_burst;
+ int mixed_burst;
+ int burst_len;
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+@@ -31,7 +31,8 @@
+ #include "dwmac_dma.h"
+
+ static int dwmac1000_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
+- int burst_len, u32 dma_tx, u32 dma_rx, int atds)
++ int burst_len, u32 dma_tx, u32 dma_rx, int atds,
++ int aal)
+ {
+ u32 value = readl(ioaddr + DMA_BUS_MODE);
+ int limit;
+@@ -62,6 +63,10 @@ static int dwmac1000_dma_init(void __iom
+ value = DMA_BUS_MODE_PBL | ((pbl << DMA_BUS_MODE_PBL_SHIFT) |
+ (pbl << DMA_BUS_MODE_RPBL_SHIFT));
+
++ /* Address Aligned Beats */
++ if (aal)
++ value |= DMA_BUS_MODE_AAL;
++
+ /* Set the Fixed burst mode */
+ if (fb)
+ value |= DMA_BUS_MODE_FB;
+--- a/drivers/net/ethernet/stmicro/stmmac/common.h
++++ b/drivers/net/ethernet/stmicro/stmmac/common.h
+@@ -352,7 +352,7 @@ extern const struct stmmac_desc_ops ndes
+ struct stmmac_dma_ops {
+ /* DMA core initialization */
+ int (*init) (void __iomem *ioaddr, int pbl, int fb, int mb,
+- int burst_len, u32 dma_tx, u32 dma_rx, int atds);
++ int burst_len, u32 dma_tx, u32 dma_rx, int atds, int aal);
+ /* Dump DMA registers */
+ void (*dump_regs) (void __iomem *ioaddr);
+ /* Set tx/rx threshold in the csr6 register
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+@@ -33,7 +33,8 @@
+ #include "dwmac_dma.h"
+
+ static int dwmac100_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
+- int burst_len, u32 dma_tx, u32 dma_rx, int atds)
++ int burst_len, u32 dma_tx, u32 dma_rx, int atds,
++ int aal)
+ {
+ u32 value = readl(ioaddr + DMA_BUS_MODE);
+ int limit;
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -1639,9 +1639,11 @@ static int stmmac_init_dma_engine(struct
+ int pbl = DEFAULT_DMA_PBL, fixed_burst = 0, burst_len = 0;
+ int mixed_burst = 0;
+ int atds = 0;
++ int aal = 0;
+
+ if (priv->plat->dma_cfg) {
+ pbl = priv->plat->dma_cfg->pbl;
++ aal = priv->plat->dma_cfg->aal;
+ fixed_burst = priv->plat->dma_cfg->fixed_burst;
+ mixed_burst = priv->plat->dma_cfg->mixed_burst;
+ burst_len = priv->plat->dma_cfg->burst_len;
+@@ -1652,7 +1654,7 @@ static int stmmac_init_dma_engine(struct
+
+ return priv->hw->dma->init(priv->ioaddr, pbl, fixed_burst, mixed_burst,
+ burst_len, priv->dma_tx_phy,
+- priv->dma_rx_phy, atds);
++ priv->dma_rx_phy, atds, aal);
+ }
+
+ /**
--- /dev/null
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -362,6 +362,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+ qcom-ipq8064-ap148.dtb \
+ qcom-ipq8064-db149.dtb \
+ qcom-ipq8064-r7500.dtb \
++ qcom-ipq8064-d7800.dtb \
+ qcom-msm8660-surf.dtb \
+ qcom-msm8960-cdp.dtb \
+ qcom-msm8974-sony-xperia-honami.dtb
+--- /dev/null
++++ b/arch/arm/boot/dts/qcom-ipq8064-d7800.dts
+@@ -0,0 +1,368 @@
++#include "qcom-ipq8064-v1.0.dtsi"
++
++#include <dt-bindings/input/input.h>
++
++/ {
++ model = "Netgear Nighthawk X4 D7800";
++ compatible = "netgear,d7800", "qcom,ipq8064";
++
++ memory@0 {
++ reg = <0x42000000 0xe000000>;
++ device_type = "memory";
++ };
++
++ reserved-memory {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ ranges;
++ rsvd@41200000 {
++ reg = <0x41200000 0x300000>;
++ no-map;
++ };
++ };
++
++ aliases {
++ serial0 = &uart4;
++ mdio-gpio0 = &mdio0;
++ };
++
++ chosen {
++ bootargs = "rootfstype=squashfs noinitrd";
++ linux,stdout-path = "serial0:115200n8";
++ };
++
++ soc {
++ pinmux@800000 {
++ i2c4_pins: i2c4_pinmux {
++ pins = "gpio12", "gpio13";
++ function = "gsbi4";
++ bias-disable;
++ };
++
++ pcie0_pins: pcie0_pinmux {
++ mux {
++ pins = "gpio3";
++ function = "pcie1_rst";
++ drive-strength = <12>;
++ bias-disable;
++ };
++ };
++
++ pcie1_pins: pcie1_pinmux {
++ mux {
++ pins = "gpio48";
++ function = "pcie2_rst";
++ drive-strength = <12>;
++ bias-disable;
++ };
++ };
++
++ nand_pins: nand_pins {
++ mux {
++ pins = "gpio34", "gpio35", "gpio36",
++ "gpio37", "gpio38", "gpio39",
++ "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ function = "nand";
++ drive-strength = <10>;
++ bias-disable;
++ };
++ pullups {
++ pins = "gpio39";
++ bias-pull-up;
++ };
++ hold {
++ pins = "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ bias-bus-hold;
++ };
++ };
++
++ mdio0_pins: mdio0_pins {
++ mux {
++ pins = "gpio0", "gpio1";
++ function = "gpio";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++
++ rgmii2_pins: rgmii2_pins {
++ mux {
++ pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
++ "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
++ function = "rgmii2";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++ };
++
++ gsbi@16300000 {
++ qcom,mode = <GSBI_PROT_I2C_UART>;
++ status = "ok";
++ serial@16340000 {
++ status = "ok";
++ };
++ /*
++ * The i2c device on gsbi4 should not be enabled.
++ * On ipq806x designs gsbi4 i2c is meant for exclusive
++ * RPM usage. Turning this on in kernel manifests as
++ * i2c failure for the RPM.
++ */
++ };
++
++ sata-phy@1b400000 {
++ status = "ok";
++ };
++
++ sata@29000000 {
++ status = "ok";
++ };
++
++ phy@100f8800 { /* USB3 port 1 HS phy */
++ status = "ok";
++ };
++
++ phy@100f8830 { /* USB3 port 1 SS phy */
++ status = "ok";
++ };
++
++ phy@110f8800 { /* USB3 port 0 HS phy */
++ status = "ok";
++ };
++
++ phy@110f8830 { /* USB3 port 0 SS phy */
++ status = "ok";
++ };
++
++ usb30@0 {
++ status = "ok";
++ };
++
++ usb30@1 {
++ status = "ok";
++ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 3 0>;
++ pinctrl-0 = <&pcie0_pins>;
++ pinctrl-names = "default";
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ reset-gpio = <&qcom_pinmux 48 0>;
++ pinctrl-0 = <&pcie1_pins>;
++ pinctrl-names = "default";
++ };
++
++ nand@1ac00000 {
++ status = "ok";
++
++ pinctrl-0 = <&nand_pins>;
++ pinctrl-names = "default";
++
++ nand-ecc-strength = <4>;
++ nand-bus-width = <8>;
++
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ qcadata@0 {
++ label = "qcadata";
++ reg = <0x0000000 0x0c80000>;
++ read-only;
++ };
++
++ APPSBL@c80000 {
++ label = "APPSBL";
++ reg = <0x0c80000 0x0500000>;
++ read-only;
++ };
++
++ APPSBLENV@1180000 {
++ label = "APPSBLENV";
++ reg = <0x1180000 0x0080000>;
++ read-only;
++ };
++
++ art: art@1200000 {
++ label = "art";
++ reg = <0x1200000 0x0140000>;
++ read-only;
++ };
++
++ artbak: art@1340000 {
++ label = "artbak";
++ reg = <0x1340000 0x0140000>;
++ read-only;
++ };
++
++ kernel@1480000 {
++ label = "kernel";
++ reg = <0x1480000 0x0200000>;
++ };
++
++ ubi@1680000 {
++ label = "ubi";
++ reg = <0x1680000 0x1E00000>;
++ };
++
++ netgear@3480000 {
++ label = "netgear";
++ reg = <0x3480000 0x4480000>;
++ read-only;
++ };
++
++ reserve@7900000 {
++ label = "reserve";
++ reg = <0x7900000 0x0700000>;
++ read-only;
++ };
++
++ firmware@1480000 {
++ label = "firmware";
++ reg = <0x1480000 0x2000000>;
++ };
++
++ };
++
++ mdio0: mdio {
++ compatible = "virtual,mdio-gpio";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++ pinctrl-0 = <&mdio0_pins>;
++ pinctrl-names = "default";
++
++ phy0: ethernet-phy@0 {
++ device_type = "ethernet-phy";
++ reg = <0>;
++ qca,ar8327-initvals = <
++ 0x00004 0x7600000 /* PAD0_MODE */
++ 0x00008 0x1000000 /* PAD5_MODE */
++ 0x0000c 0x80 /* PAD6_MODE */
++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
++ 0x000e0 0xc74164de /* SGMII_CTRL */
++ 0x0007c 0x4e /* PORT0_STATUS */
++ 0x00094 0x4e /* PORT6_STATUS */
++ >;
++ };
++
++ phy4: ethernet-phy@4 {
++ device_type = "ethernet-phy";
++ reg = <4>;
++ };
++ };
++
++ gmac1: ethernet@37200000 {
++ status = "ok";
++ phy-mode = "rgmii";
++ phy-handle = <&phy4>;
++ qcom,id = <1>;
++
++ pinctrl-0 = <&rgmii2_pins>;
++ pinctrl-names = "default";
++
++ mtd-mac-address = <&art 6>;
++ };
++
++ gmac2: ethernet@37400000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <2>;
++
++ mtd-mac-address = <&art 0>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++ };
++
++ gpio-keys {
++ compatible = "gpio-keys";
++
++ wifi {
++ label = "wifi";
++ gpios = <&qcom_pinmux 6 1>;
++ linux,code = <KEY_WLAN>;
++ };
++
++ reset {
++ label = "reset";
++ gpios = <&qcom_pinmux 54 1>;
++ linux,code = <KEY_RESTART>;
++ };
++
++ wps {
++ label = "wps";
++ gpios = <&qcom_pinmux 65 1>;
++ linux,code = <KEY_WPS_BUTTON>;
++ };
++ };
++
++ gpio-leds {
++ compatible = "gpio-leds";
++
++ usb1 {
++ label = "d7800:amber:usb1";
++ gpios = <&qcom_pinmux 7 0>;
++ };
++
++ usb3 {
++ label = "d7800:amber:usb3";
++ gpios = <&qcom_pinmux 8 0>;
++ };
++
++ status {
++ label = "d7800:amber:status";
++ gpios = <&qcom_pinmux 9 0>;
++ };
++
++ internet {
++ label = "d7800:white:internet";
++ gpios = <&qcom_pinmux 22 0>;
++ };
++
++ wan {
++ label = "d7800:white:wan";
++ gpios = <&qcom_pinmux 23 0>;
++ };
++
++ wps {
++ label = "d7800:white:wps";
++ gpios = <&qcom_pinmux 24 0>;
++ };
++
++ esata {
++ label = "d7800:white:esata";
++ gpios = <&qcom_pinmux 26 0>;
++ };
++
++ power {
++ label = "d7800:white:power";
++ gpios = <&qcom_pinmux 53 0>;
++ default-state = "on";
++ };
++
++ rfkill {
++ label = "d7800:white:rfkill";
++ gpios = <&qcom_pinmux 64 0>;
++ };
++
++ wifi5g {
++ label = "d7800:white:wifi5g";
++ gpios = <&qcom_pinmux 67 0>;
++ };
++ };
++};
++
++&adm_dma {
++ status = "ok";
++};
--- /dev/null
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -506,6 +506,7 @@
+ qcom-apq8084-ifc6540.dtb \
+ qcom-apq8084-mtp.dtb \
+ qcom-ipq8064-ap148.dtb \
++ qcom-ipq8064-c2600.dtb \
+ qcom-ipq8064-db149.dtb \
+ qcom-ipq8064-r7500.dtb \
+ qcom-ipq8064-d7800.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/qcom-ipq8064-c2600.dts
+@@ -0,0 +1,412 @@
++#include "qcom-ipq8064-v1.0.dtsi"
++#include <dt-bindings/input/input.h>
++
++/ {
++ model = "TP-Link Archer C2600";
++ compatible = "tplink,c2600", "qcom,ipq8064";
++
++ memory@0 {
++ reg = <0x42000000 0x1e000000>;
++ device_type = "memory";
++ };
++
++ reserved-memory {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ ranges;
++ rsvd@41200000 {
++ reg = <0x41200000 0x300000>;
++ no-map;
++ };
++ };
++
++ aliases {
++ serial0 = &uart4;
++ mdio-gpio0 = &mdio0;
++ };
++
++ chosen {
++ linux,stdout-path = "serial0:115200n8";
++ };
++
++ soc {
++ pinmux@800000 {
++ i2c4_pins: i2c4_pinmux {
++ pins = "gpio12", "gpio13";
++ function = "gsbi4";
++ bias-disable;
++ };
++
++ spi_pins: spi_pins {
++ mux {
++ pins = "gpio18", "gpio19", "gpio21";
++ function = "gsbi5";
++ drive-strength = <10>;
++ bias-none;
++ };
++ };
++
++ nand_pins: nand_pins {
++ mux {
++ pins = "gpio34", "gpio35", "gpio36",
++ "gpio37", "gpio38", "gpio39",
++ "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ function = "nand";
++ drive-strength = <10>;
++ bias-disable;
++ };
++
++ pullups {
++ pins = "gpio39";
++ bias-pull-up;
++ };
++
++ hold {
++ pins = "gpio40", "gpio41", "gpio42",
++ "gpio43", "gpio44", "gpio45",
++ "gpio46", "gpio47";
++ bias-bus-hold;
++ };
++ };
++
++ mdio0_pins: mdio0_pins {
++ mux {
++ pins = "gpio0", "gpio1";
++ function = "gpio";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++
++ rgmii2_pins: rgmii2_pins {
++ mux {
++ pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
++ "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
++ function = "rgmii2";
++ drive-strength = <8>;
++ bias-disable;
++ };
++ };
++ };
++
++ gsbi@16300000 {
++ qcom,mode = <GSBI_PROT_I2C_UART>;
++ status = "ok";
++ serial@16340000 {
++ status = "ok";
++ };
++ /*
++ * The i2c device on gsbi4 should not be enabled.
++ * On ipq806x designs gsbi4 i2c is meant for exclusive
++ * RPM usage. Turning this on in kernel manifests as
++ * i2c failure for the RPM.
++ */
++ };
++
++ gsbi5: gsbi@1a200000 {
++ qcom,mode = <GSBI_PROT_SPI>;
++ status = "ok";
++
++ spi4: spi@1a280000 {
++ status = "ok";
++ spi-max-frequency = <50000000>;
++
++ pinctrl-0 = <&spi_pins>;
++ pinctrl-names = "default";
++
++ cs-gpios = <&qcom_pinmux 20 0>;
++
++ flash: m25p80@0 {
++ compatible = "s25fl256s1";
++ #address-cells = <1>;
++ #size-cells = <1>;
++ spi-max-frequency = <50000000>;
++ reg = <0>;
++
++ SBL1@0 {
++ label = "SBL1";
++ reg = <0x0 0x20000>;
++ read-only;
++ };
++ MIBIB@20000 {
++ label = "MIBIB";
++ reg = <0x20000 0x20000>;
++ read-only;
++ };
++ SBL2@40000 {
++ label = "SBL2";
++ reg = <0x40000 0x20000>;
++ read-only;
++ };
++ SBL3@60000 {
++ label = "SBL3";
++ reg = <0x60000 0x30000>;
++ read-only;
++ };
++ DDRCONFIG@90000 {
++ label = "DDRCONFIG";
++ reg = <0x90000 0x10000>;
++ read-only;
++ };
++ SSD@a0000 {
++ label = "SSD";
++ reg = <0xa0000 0x10000>;
++ read-only;
++ };
++ TZ@b0000 {
++ label = "TZ";
++ reg = <0xb0000 0x30000>;
++ read-only;
++ };
++ RPM@e0000 {
++ label = "RPM";
++ reg = <0xe0000 0x20000>;
++ read-only;
++ };
++ fs-uboot@100000 {
++ label = "fs-uboot";
++ reg = <0x100000 0x70000>;
++ read-only;
++ };
++ uboot-env@170000 {
++ label = "uboot-env";
++ reg = <0x170000 0x40000>;
++ read-only;
++ };
++ radio@1b0000 {
++ label = "radio";
++ reg = <0x1b0000 0x40000>;
++ read-only;
++ };
++ os-image@1f0000 {
++ label = "os-image";
++ reg = <0x1f0000 0x200000>;
++ };
++ rootfs@3f0000 {
++ label = "rootfs";
++ reg = <0x3f0000 0x1b00000>;
++ };
++ defaultmac: default-mac@1ef0000 {
++ label = "default-mac";
++ reg = <0x1ef0000 0x00200>;
++ read-only;
++ };
++ pin@1ef0200 {
++ label = "pin";
++ reg = <0x1ef0200 0x00200>;
++ read-only;
++ };
++ product-info@1ef0400 {
++ label = "product-info";
++ reg = <0x1ef0400 0x0fc00>;
++ read-only;
++ };
++ partition-table@1f00000 {
++ label = "partition-table";
++ reg = <0x1f00000 0x10000>;
++ read-only;
++ };
++ soft-version@1f10000 {
++ label = "soft-version";
++ reg = <0x1f10000 0x10000>;
++ read-only;
++ };
++ support-list@1f20000 {
++ label = "support-list";
++ reg = <0x1f20000 0x10000>;
++ read-only;
++ };
++ profile@1f30000 {
++ label = "profile";
++ reg = <0x1f30000 0x10000>;
++ read-only;
++ };
++ default-config@1f40000 {
++ label = "default-config";
++ reg = <0x1f40000 0x10000>;
++ read-only;
++ };
++ user-config@1f50000 {
++ label = "user-config";
++ reg = <0x1f50000 0x40000>;
++ read-only;
++ };
++ qos-db@1f90000 {
++ label = "qos-db";
++ reg = <0x1f90000 0x40000>;
++ read-only;
++ };
++ usb-config@1fd0000 {
++ label = "usb-config";
++ reg = <0x1fd0000 0x10000>;
++ read-only;
++ };
++ log@1fe0000 {
++ label = "log";
++ reg = <0x1fe0000 0x20000>;
++ read-only;
++ };
++ };
++ };
++ };
++
++ phy@100f8800 { /* USB3 port 1 HS phy */
++ status = "ok";
++ };
++
++ phy@100f8830 { /* USB3 port 1 SS phy */
++ status = "ok";
++ };
++
++ phy@110f8800 { /* USB3 port 0 HS phy */
++ status = "ok";
++ };
++
++ phy@110f8830 { /* USB3 port 0 SS phy */
++ status = "ok";
++ };
++
++ usb30@0 {
++ status = "ok";
++ };
++
++ usb30@1 {
++ status = "ok";
++ };
++
++ pcie0: pci@1b500000 {
++ status = "ok";
++ phy-tx0-term-offset = <7>;
++ };
++
++ pcie1: pci@1b700000 {
++ status = "ok";
++ phy-tx0-term-offset = <7>;
++ };
++
++ mdio0: mdio {
++ compatible = "virtual,mdio-gpio";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++ pinctrl-0 = <&mdio0_pins>;
++ pinctrl-names = "default";
++
++ phy0: ethernet-phy@0 {
++ device_type = "ethernet-phy";
++ reg = <0>;
++ qca,ar8327-initvals = <
++ 0x00004 0x7600000 /* PAD0_MODE */
++ 0x00008 0x1000000 /* PAD5_MODE */
++ 0x0000c 0x80 /* PAD6_MODE */
++ 0x000e4 0xaa545 /* MAC_POWER_SEL */
++ 0x000e0 0xc74164de /* SGMII_CTRL */
++ 0x0007c 0x4e /* PORT0_STATUS */
++ 0x00094 0x4e /* PORT6_STATUS */
++ >;
++ };
++
++ phy4: ethernet-phy@4 {
++ device_type = "ethernet-phy";
++ reg = <4>;
++ };
++ };
++
++ gmac1: ethernet@37200000 {
++ status = "ok";
++ phy-mode = "rgmii";
++ qcom,id = <1>;
++
++ pinctrl-0 = <&rgmii2_pins>;
++ pinctrl-names = "default";
++
++ mtd-mac-address = <&defaultmac 0x8>;
++ mtd-mac-address-increment = <1>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++
++ gmac2: ethernet@37400000 {
++ status = "ok";
++ phy-mode = "sgmii";
++ qcom,id = <2>;
++
++ mtd-mac-address = <&defaultmac 0x8>;
++
++ fixed-link {
++ speed = <1000>;
++ full-duplex;
++ };
++ };
++ };
++
++ gpio-keys {
++ compatible = "gpio-keys";
++
++ wifi {
++ label = "wifi";
++ gpios = <&qcom_pinmux 49 1>;
++ linux,code = <KEY_WLAN>;
++ };
++
++ reset {
++ label = "reset";
++ gpios = <&qcom_pinmux 64 1>;
++ linux,code = <KEY_RESTART>;
++ };
++
++ wps {
++ label = "wps";
++ gpios = <&qcom_pinmux 65 1>;
++ linux,code = <KEY_WPS_BUTTON>;
++ };
++ ledgeneral {
++ label = "ledgeneral";
++ gpios = <&qcom_pinmux 16 1>;
++ linux,code = <KEY_DOLLAR>;
++ };
++ };
++
++ gpio-leds {
++ compatible = "gpio-leds";
++
++ lan {
++ label = "lan:blue";
++ gpios = <&qcom_pinmux 6 0>;
++ };
++ usb4 {
++ label = "usb_4:blue";
++ gpios = <&qcom_pinmux 7 0>;
++ };
++ usb2 {
++ label = "usb_2:blue";
++ gpios = <&qcom_pinmux 8 0>;
++ };
++ wps {
++ label = "wps:blue";
++ gpios = <&qcom_pinmux 9 0>;
++ };
++ wan_blue {
++ label = "wan:blue";
++ gpios = <&qcom_pinmux 33 1>;
++ };
++ status {
++ label = "status:blue";
++ gpios = <&qcom_pinmux 53 0>;
++ default-state = "on";
++ };
++ ledgnr {
++ label = "ledgnr:blue";
++ gpios = <&qcom_pinmux 66 0>;
++ };
++ };
++};
++
++&adm_dma {
++ status = "ok";
++};
--- /dev/null
+From patchwork Fri May 29 01:42:16 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [1/7] net: dsa: add new driver for ar8xxx family
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477523
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-2-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:16 -0700
+
+This patch contains initial init & registration code for QCA8337. It
+will detect a QCA8337 switch, if present and declared in DT/platform.
+
+Each port will be represented through a standalone net_device interface,
+as for other DSA switches. CPU can communicate with any of the ports by
+setting an IP@ on ethN interface. Ports cannot communicate with each
+other just yet.
+
+Link status will be reported through polling, and we don't use any
+encapsulation.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/net/dsa/Kconfig | 7 ++
+ drivers/net/dsa/Makefile | 1 +
+ drivers/net/dsa/ar8xxx.c | 303 +++++++++++++++++++++++++++++++++++++++++++++++
+ drivers/net/dsa/ar8xxx.h | 82 +++++++++++++
+ net/dsa/dsa.c | 1 +
+ 5 files changed, 394 insertions(+)
+ create mode 100644 drivers/net/dsa/ar8xxx.c
+ create mode 100644 drivers/net/dsa/ar8xxx.h
+
+diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
+index 7ad0a4d..2aae541 100644
+--- a/drivers/net/dsa/Kconfig
++++ b/drivers/net/dsa/Kconfig
+@@ -65,4 +65,11 @@ config NET_DSA_BCM_SF2
+ This enables support for the Broadcom Starfighter 2 Ethernet
+ switch chips.
+
++config NET_DSA_AR8XXX
++ tristate "Qualcomm Atheros AR8XXX Ethernet switch family support"
++ depends on NET_DSA
++ ---help---
++ This enables support for the Qualcomm Atheros AR8XXX Ethernet
++ switch chips.
++
+ endmenu
+diff --git a/drivers/net/dsa/Makefile b/drivers/net/dsa/Makefile
+index e2d51c4..7647687 100644
+--- a/drivers/net/dsa/Makefile
++++ b/drivers/net/dsa/Makefile
+@@ -14,3 +14,4 @@ ifdef CONFIG_NET_DSA_MV88E6171
+ mv88e6xxx_drv-y += mv88e6171.o
+ endif
+ obj-$(CONFIG_NET_DSA_BCM_SF2) += bcm_sf2.o
++obj-$(CONFIG_NET_DSA_AR8XXX) += ar8xxx.o
+diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
+new file mode 100644
+index 0000000..4ce3ffc
+--- /dev/null
++++ b/drivers/net/dsa/ar8xxx.c
+@@ -0,0 +1,303 @@
++/*
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/phy.h>
++#include <linux/netdevice.h>
++#include <net/dsa.h>
++#include <linux/phy.h>
++#include <linux/of_net.h>
++
++#include "ar8xxx.h"
++
++u32
++ar8xxx_mii_read32(struct mii_bus *bus, int phy_id, int regnum)
++{
++ u16 lo, hi;
++
++ lo = bus->read(bus, phy_id, regnum);
++ hi = bus->read(bus, phy_id, regnum + 1);
++
++ return (hi << 16) | lo;
++}
++
++void
++ar8xxx_mii_write32(struct mii_bus *bus, int phy_id, int regnum, u32 val)
++{
++ u16 lo, hi;
++
++ lo = val & 0xffff;
++ hi = (u16)(val >> 16);
++
++ bus->write(bus, phy_id, regnum, lo);
++ bus->write(bus, phy_id, regnum + 1, hi);
++}
++
++u32 ar8xxx_read(struct dsa_switch *ds, int reg)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
++ u16 r1, r2, page;
++ u32 val;
++
++ split_addr((u32)reg, &r1, &r2, &page);
++
++ mutex_lock(&bus->mdio_lock);
++
++ bus->write(bus, 0x18, 0, page);
++ wait_for_page_switch();
++ val = ar8xxx_mii_read32(bus, 0x10 | r2, r1);
++
++ mutex_unlock(&bus->mdio_lock);
++
++ return val;
++}
++
++void ar8xxx_write(struct dsa_switch *ds, int reg, u32 val)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
++ u16 r1, r2, page;
++
++ split_addr((u32)reg, &r1, &r2, &page);
++
++ mutex_lock(&bus->mdio_lock);
++
++ bus->write(bus, 0x18, 0, page);
++ wait_for_page_switch();
++ ar8xxx_mii_write32(bus, 0x10 | r2, r1, val);
++
++ mutex_unlock(&bus->mdio_lock);
++}
++
++u32
++ar8xxx_rmw(struct dsa_switch *ds, int reg, u32 mask, u32 val)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
++ u16 r1, r2, page;
++ u32 ret;
++
++ split_addr((u32)reg, &r1, &r2, &page);
++
++ mutex_lock(&bus->mdio_lock);
++
++ bus->write(bus, 0x18, 0, page);
++ wait_for_page_switch();
++
++ ret = ar8xxx_mii_read32(bus, 0x10 | r2, r1);
++ ret &= ~mask;
++ ret |= val;
++ ar8xxx_mii_write32(bus, 0x10 | r2, r1, ret);
++
++ mutex_unlock(&bus->mdio_lock);
++
++ return ret;
++}
++
++static char *ar8xxx_probe(struct device *host_dev, int sw_addr)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
++ u32 phy_id;
++
++ if (!bus)
++ return NULL;
++
++ /* sw_addr is irrelevant as the switch occupies the MDIO bus from
++ * addresses 0 to 4 (PHYs) and 16-23 (for MDIO 32bits protocol). So
++ * we'll probe address 0 to see if we see the right switch family.
++ */
++ phy_id = mdiobus_read(bus, 0, MII_PHYSID1) << 16;
++ phy_id |= mdiobus_read(bus, 0, MII_PHYSID2);
++
++ switch (phy_id) {
++ case PHY_ID_QCA8337:
++ return "QCA8337";
++ default:
++ return NULL;
++ }
++}
++
++static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
++{
++ int reg;
++
++ switch (port) {
++ case 0:
++ reg = AR8327_REG_PORT0_PAD_CTRL;
++ break;
++ case 6:
++ reg = AR8327_REG_PORT6_PAD_CTRL;
++ break;
++ default:
++ pr_err("Can't set PAD_CTRL on port %d\n", port);
++ return -EINVAL;
++ }
++
++ /* DSA only supports 1 CPU port for now, so we'll take the assumption
++ * that P0 is connected to the CPU master_dev.
++ */
++ switch (mode) {
++ case PHY_INTERFACE_MODE_RGMII:
++ ar8xxx_write(ds, reg,
++ AR8327_PORT_PAD_RGMII_EN |
++ AR8327_PORT_PAD_RGMII_TX_DELAY(3) |
++ AR8327_PORT_PAD_RGMII_RX_DELAY(3));
++
++ /* According to the datasheet, RGMII delay is enabled through
++ * PORT5_PAD_CTRL for all ports, rather than individual port
++ * registers
++ */
++ ar8xxx_write(ds, AR8327_REG_PORT5_PAD_CTRL,
++ AR8327_PORT_PAD_RGMII_RX_DELAY_EN);
++ break;
++ default:
++ pr_err("xMII mode %d not supported\n", mode);
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int ar8xxx_setup(struct dsa_switch *ds)
++{
++ struct net_device *netdev = ds->dst->pd->of_netdev;
++ int ret, i, phy_mode;
++
++ /* Initialize CPU port pad mode (xMII type, delays...) */
++ phy_mode = of_get_phy_mode(netdev->dev.parent->of_node);
++ if (phy_mode < 0) {
++ pr_err("Can't find phy-mode for master device\n");
++ return phy_mode;
++ }
++
++ ret = ar8xxx_set_pad_ctrl(ds, 0, phy_mode);
++ if (ret < 0)
++ return ret;
++
++ /* Disable forwarding by default on all ports */
++ for (i = 0; i < AR8327_NUM_PORTS; i++)
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(i),
++ AR8327_PORT_LOOKUP_MEMBER, 0);
++
++ /* Setup connection between CPU ports & PHYs */
++ for (i = 0; i < DSA_MAX_PORTS; i++) {
++ /* CPU port gets connected to all PHYs in the switch */
++ if (dsa_is_cpu_port(ds, i)) {
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(0),
++ AR8327_PORT_LOOKUP_MEMBER,
++ ds->phys_port_mask << 1);
++ }
++
++ /* Invividual PHYs gets connected to CPU port only */
++ if (ds->phys_port_mask & BIT(i)) {
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(phy_to_port(i)),
++ AR8327_PORT_LOOKUP_MEMBER, BIT(0));
++ }
++ }
++
++ return 0;
++}
++
++static int ar8xxx_set_addr(struct dsa_switch *ds, u8 *addr)
++{
++ return 0;
++}
++
++static int ar8xxx_phy_read(struct dsa_switch *ds, int phy, int regnum)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
++
++ return mdiobus_read(bus, phy, regnum);
++}
++
++static int
++ar8xxx_phy_write(struct dsa_switch *ds, int phy, int regnum, u16 val)
++{
++ struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
++
++ return mdiobus_write(bus, phy, regnum, val);
++}
++
++static void ar8xxx_poll_link(struct dsa_switch *ds)
++{
++ int i = 0;
++ struct net_device *dev;
++
++ while ((dev = ds->ports[i++]) != NULL) {
++ u32 status;
++ int link;
++ int speed;
++ int duplex;
++
++ status = ar8xxx_read(ds, AR8327_REG_PORT_STATUS(i));
++ link = !!(status & AR8XXX_PORT_STATUS_LINK_UP);
++ duplex = !!(status & AR8XXX_PORT_STATUS_DUPLEX);
++
++ switch (status & AR8XXX_PORT_STATUS_SPEED) {
++ case AR8XXX_PORT_SPEED_10M:
++ speed = 10;
++ break;
++ case AR8XXX_PORT_SPEED_100M:
++ speed = 100;
++ break;
++ case AR8XXX_PORT_SPEED_1000M:
++ speed = 1000;
++ break;
++ default:
++ speed = 0;
++ }
++
++ if (!link) {
++ /* This poll happens every ~1s, so we don't want to
++ * print the status every time. Only when the device
++ * transitions from Link UP to Link DOWN
++ */
++ if (netif_carrier_ok(dev))
++ netif_carrier_off(dev);
++ continue;
++ } else {
++ /* Same thing here. But we detect a Link UP event */
++ if (!netif_carrier_ok(dev))
++ netif_carrier_on(dev);
++ continue;
++ }
++ }
++}
++
++static struct dsa_switch_driver ar8xxx_switch_driver = {
++ .tag_protocol = DSA_TAG_PROTO_NONE,
++ .probe = ar8xxx_probe,
++ .setup = ar8xxx_setup,
++ .set_addr = ar8xxx_set_addr,
++ .poll_link = ar8xxx_poll_link,
++ .phy_read = ar8xxx_phy_read,
++ .phy_write = ar8xxx_phy_write,
++};
++
++static int __init ar8xxx_init(void)
++{
++ register_switch_driver(&ar8xxx_switch_driver);
++ return 0;
++}
++module_init(ar8xxx_init);
++
++static void __exit ar8xxx_cleanup(void)
++{
++ unregister_switch_driver(&ar8xxx_switch_driver);
++}
++module_exit(ar8xxx_cleanup);
++
++MODULE_AUTHOR("Mathieu Olivari <mathieu@codeaurora.org>");
++MODULE_DESCRIPTION("Driver for AR8XXX ethernet switch family");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:ar8xxx");
+diff --git a/drivers/net/dsa/ar8xxx.h b/drivers/net/dsa/ar8xxx.h
+new file mode 100644
+index 0000000..a29b6d3
+--- /dev/null
++++ b/drivers/net/dsa/ar8xxx.h
+@@ -0,0 +1,82 @@
++/*
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#ifndef __AR8XXX_H
++#define __AR8XXX_H
++
++#include <linux/delay.h>
++
++#define AR8327_NUM_PORTS 7
++
++#define PHY_ID_QCA8337 0x004dd036
++
++#define AR8327_REG_PORT0_PAD_CTRL 0x004
++#define AR8327_REG_PORT5_PAD_CTRL 0x008
++#define AR8327_REG_PORT6_PAD_CTRL 0x00c
++#define AR8327_PORT_PAD_RGMII_EN BIT(26)
++#define AR8327_PORT_PAD_RGMII_TX_DELAY(x) ((0x8 + (x & 0x3)) << 22)
++#define AR8327_PORT_PAD_RGMII_RX_DELAY(x) ((0x10 + (x & 0x3)) << 20)
++#define AR8327_PORT_PAD_RGMII_RX_DELAY_EN BIT(24)
++#define AR8327_PORT_PAD_SGMII_EN BIT(7)
++
++#define AR8327_REG_PORT_STATUS(_i) (0x07c + (_i) * 4)
++#define AR8XXX_PORT_STATUS_SPEED GENMASK(2, 0)
++#define AR8XXX_PORT_STATUS_SPEED_S 0
++#define AR8XXX_PORT_STATUS_TXMAC BIT(2)
++#define AR8XXX_PORT_STATUS_RXMAC BIT(3)
++#define AR8XXX_PORT_STATUS_TXFLOW BIT(4)
++#define AR8XXX_PORT_STATUS_RXFLOW BIT(5)
++#define AR8XXX_PORT_STATUS_DUPLEX BIT(6)
++#define AR8XXX_PORT_STATUS_LINK_UP BIT(8)
++#define AR8XXX_PORT_STATUS_LINK_AUTO BIT(9)
++#define AR8XXX_PORT_STATUS_LINK_PAUSE BIT(10)
++
++#define AR8327_PORT_LOOKUP_CTRL(_i) (0x660 + (_i) * 0xc)
++#define AR8327_PORT_LOOKUP_MEMBER GENMASK(6, 0)
++#define AR8327_PORT_LOOKUP_IN_MODE GENMASK(9, 8)
++#define AR8327_PORT_LOOKUP_IN_MODE_S 8
++#define AR8327_PORT_LOOKUP_STATE GENMASK(18, 16)
++#define AR8327_PORT_LOOKUP_STATE_S 16
++#define AR8327_PORT_LOOKUP_LEARN BIT(20)
++#define AR8327_PORT_LOOKUP_ING_MIRROR_EN BIT(25)
++
++/* port speed */
++enum {
++ AR8XXX_PORT_SPEED_10M = 0,
++ AR8XXX_PORT_SPEED_100M = 1,
++ AR8XXX_PORT_SPEED_1000M = 2,
++ AR8XXX_PORT_SPEED_ERR = 3,
++};
++
++static inline void
++split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
++{
++ regaddr >>= 1;
++ *r1 = regaddr & 0x1e;
++
++ regaddr >>= 5;
++ *r2 = regaddr & 0x7;
++
++ regaddr >>= 3;
++ *page = regaddr & 0x1ff;
++}
++
++static inline void
++wait_for_page_switch(void)
++{
++ udelay(5);
++}
++
++#endif /* __AR8XXX_H */
+diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
+index e6f6cc3..fffb9aa 100644
+--- a/net/dsa/dsa.c
++++ b/net/dsa/dsa.c
+@@ -893,6 +893,7 @@ static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);
+
+ static const struct of_device_id dsa_of_match_table[] = {
+ { .compatible = "brcm,bcm7445-switch-v4.0" },
++ { .compatible = "qca,ar8xxx", },
+ { .compatible = "marvell,dsa", },
+ {}
+ };
+
+From patchwork Fri May 29 01:42:17 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [2/7] net: dsa: ar8xxx: add ethtool hw statistics support
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477524
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-3-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:17 -0700
+
+MIB counters can now be reported through each switch port by using
+"ethtool -S".
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/net/dsa/ar8xxx.c | 106 +++++++++++++++++++++++++++++++++++++++++++----
+ drivers/net/dsa/ar8xxx.h | 47 +++++++++++++++++++++
+ 2 files changed, 146 insertions(+), 7 deletions(-)
+
+diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
+index 4ce3ffc..2f0fa4d 100644
+--- a/drivers/net/dsa/ar8xxx.c
++++ b/drivers/net/dsa/ar8xxx.c
+@@ -22,6 +22,55 @@
+
+ #include "ar8xxx.h"
+
++#define MIB_DESC(_s, _o, _n) \
++ { \
++ .size = (_s), \
++ .offset = (_o), \
++ .name = (_n), \
++ }
++
++static const struct ar8xxx_mib_desc ar8327_mib[] = {
++ MIB_DESC(1, 0x00, "RxBroad"),
++ MIB_DESC(1, 0x04, "RxPause"),
++ MIB_DESC(1, 0x08, "RxMulti"),
++ MIB_DESC(1, 0x0c, "RxFcsErr"),
++ MIB_DESC(1, 0x10, "RxAlignErr"),
++ MIB_DESC(1, 0x14, "RxRunt"),
++ MIB_DESC(1, 0x18, "RxFragment"),
++ MIB_DESC(1, 0x1c, "Rx64Byte"),
++ MIB_DESC(1, 0x20, "Rx128Byte"),
++ MIB_DESC(1, 0x24, "Rx256Byte"),
++ MIB_DESC(1, 0x28, "Rx512Byte"),
++ MIB_DESC(1, 0x2c, "Rx1024Byte"),
++ MIB_DESC(1, 0x30, "Rx1518Byte"),
++ MIB_DESC(1, 0x34, "RxMaxByte"),
++ MIB_DESC(1, 0x38, "RxTooLong"),
++ MIB_DESC(2, 0x3c, "RxGoodByte"),
++ MIB_DESC(2, 0x44, "RxBadByte"),
++ MIB_DESC(1, 0x4c, "RxOverFlow"),
++ MIB_DESC(1, 0x50, "Filtered"),
++ MIB_DESC(1, 0x54, "TxBroad"),
++ MIB_DESC(1, 0x58, "TxPause"),
++ MIB_DESC(1, 0x5c, "TxMulti"),
++ MIB_DESC(1, 0x60, "TxUnderRun"),
++ MIB_DESC(1, 0x64, "Tx64Byte"),
++ MIB_DESC(1, 0x68, "Tx128Byte"),
++ MIB_DESC(1, 0x6c, "Tx256Byte"),
++ MIB_DESC(1, 0x70, "Tx512Byte"),
++ MIB_DESC(1, 0x74, "Tx1024Byte"),
++ MIB_DESC(1, 0x78, "Tx1518Byte"),
++ MIB_DESC(1, 0x7c, "TxMaxByte"),
++ MIB_DESC(1, 0x80, "TxOverSize"),
++ MIB_DESC(2, 0x84, "TxByte"),
++ MIB_DESC(1, 0x8c, "TxCollision"),
++ MIB_DESC(1, 0x90, "TxAbortCol"),
++ MIB_DESC(1, 0x94, "TxMultiCol"),
++ MIB_DESC(1, 0x98, "TxSingleCol"),
++ MIB_DESC(1, 0x9c, "TxExcDefer"),
++ MIB_DESC(1, 0xa0, "TxDefer"),
++ MIB_DESC(1, 0xa4, "TxLateCol"),
++};
++
+ u32
+ ar8xxx_mii_read32(struct mii_bus *bus, int phy_id, int regnum)
+ {
+@@ -184,6 +233,10 @@ static int ar8xxx_setup(struct dsa_switch *ds)
+ if (ret < 0)
+ return ret;
+
++ /* Enable MIB counters */
++ ar8xxx_reg_set(ds, AR8327_REG_MIB, AR8327_MIB_CPU_KEEP);
++ ar8xxx_write(ds, AR8327_REG_MODULE_EN, AR8327_MODULE_EN_MIB);
++
+ /* Disable forwarding by default on all ports */
+ for (i = 0; i < AR8327_NUM_PORTS; i++)
+ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(i),
+@@ -228,6 +281,42 @@ ar8xxx_phy_write(struct dsa_switch *ds, int phy, int regnum, u16 val)
+ return mdiobus_write(bus, phy, regnum, val);
+ }
+
++static void ar8xxx_get_strings(struct dsa_switch *ds, int phy, uint8_t *data)
++{
++ int i;
++
++ for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++) {
++ strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name,
++ ETH_GSTRING_LEN);
++ }
++}
++
++static void ar8xxx_get_ethtool_stats(struct dsa_switch *ds, int phy,
++ uint64_t *data)
++{
++ const struct ar8xxx_mib_desc *mib;
++ uint32_t reg, i, port;
++ u64 hi;
++
++ port = phy_to_port(phy);
++
++ for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++) {
++ mib = &ar8327_mib[i];
++ reg = AR8327_PORT_MIB_COUNTER(port) + mib->offset;
++
++ data[i] = ar8xxx_read(ds, reg);
++ if (mib->size == 2) {
++ hi = ar8xxx_read(ds, reg + 4);
++ data[i] |= hi << 32;
++ }
++ }
++}
++
++static int ar8xxx_get_sset_count(struct dsa_switch *ds)
++{
++ return ARRAY_SIZE(ar8327_mib);
++}
++
+ static void ar8xxx_poll_link(struct dsa_switch *ds)
+ {
+ int i = 0;
+@@ -275,13 +364,16 @@ static void ar8xxx_poll_link(struct dsa_switch *ds)
+ }
+
+ static struct dsa_switch_driver ar8xxx_switch_driver = {
+- .tag_protocol = DSA_TAG_PROTO_NONE,
+- .probe = ar8xxx_probe,
+- .setup = ar8xxx_setup,
+- .set_addr = ar8xxx_set_addr,
+- .poll_link = ar8xxx_poll_link,
+- .phy_read = ar8xxx_phy_read,
+- .phy_write = ar8xxx_phy_write,
++ .tag_protocol = DSA_TAG_PROTO_NONE,
++ .probe = ar8xxx_probe,
++ .setup = ar8xxx_setup,
++ .set_addr = ar8xxx_set_addr,
++ .poll_link = ar8xxx_poll_link,
++ .phy_read = ar8xxx_phy_read,
++ .phy_write = ar8xxx_phy_write,
++ .get_strings = ar8xxx_get_strings,
++ .get_ethtool_stats = ar8xxx_get_ethtool_stats,
++ .get_sset_count = ar8xxx_get_sset_count,
+ };
+
+ static int __init ar8xxx_init(void)
+diff --git a/drivers/net/dsa/ar8xxx.h b/drivers/net/dsa/ar8xxx.h
+index a29b6d3..7c7a125 100644
+--- a/drivers/net/dsa/ar8xxx.h
++++ b/drivers/net/dsa/ar8xxx.h
+@@ -18,6 +18,12 @@
+
+ #include <linux/delay.h>
+
++struct ar8xxx_mib_desc {
++ unsigned int size;
++ unsigned int offset;
++ const char *name;
++};
++
+ #define AR8327_NUM_PORTS 7
+
+ #define PHY_ID_QCA8337 0x004dd036
+@@ -31,6 +37,14 @@
+ #define AR8327_PORT_PAD_RGMII_RX_DELAY_EN BIT(24)
+ #define AR8327_PORT_PAD_SGMII_EN BIT(7)
+
++#define AR8327_REG_MODULE_EN 0x030
++#define AR8327_MODULE_EN_MIB BIT(0)
++#define AR8327_MODULE_EN_ACL BIT(1)
++#define AR8327_MODULE_EN_L3 BIT(2)
++
++#define AR8327_REG_MIB 0x034
++#define AR8327_MIB_CPU_KEEP BIT(20)
++
+ #define AR8327_REG_PORT_STATUS(_i) (0x07c + (_i) * 4)
+ #define AR8XXX_PORT_STATUS_SPEED GENMASK(2, 0)
+ #define AR8XXX_PORT_STATUS_SPEED_S 0
+@@ -52,6 +66,8 @@
+ #define AR8327_PORT_LOOKUP_LEARN BIT(20)
+ #define AR8327_PORT_LOOKUP_ING_MIRROR_EN BIT(25)
+
++#define AR8327_PORT_MIB_COUNTER(_i) (0x1000 + (_i) * 0x100)
++
+ /* port speed */
+ enum {
+ AR8XXX_PORT_SPEED_10M = 0,
+@@ -60,6 +76,25 @@ enum {
+ AR8XXX_PORT_SPEED_ERR = 3,
+ };
+
++static inline int port_to_phy(int port)
++{
++ if (port >= 1 && port <= 6)
++ return port - 1;
++
++ return -1;
++}
++
++static inline int phy_to_port(int phy)
++{
++ if (phy < 5)
++ return phy + 1;
++
++ return -1;
++}
++
++u32
++ar8xxx_rmw(struct dsa_switch *ds, int reg, u32 mask, u32 val);
++
+ static inline void
+ split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
+ {
+@@ -79,4 +114,16 @@ wait_for_page_switch(void)
+ udelay(5);
+ }
+
++static inline void
++ar8xxx_reg_set(struct dsa_switch *ds, int reg, u32 val)
++{
++ ar8xxx_rmw(ds, reg, 0, val);
++}
++
++static inline void
++ar8xxx_reg_clear(struct dsa_switch *ds, int reg, u32 val)
++{
++ ar8xxx_rmw(ds, reg, val, 0);
++}
++
+ #endif /* __AR8XXX_H */
+
+From patchwork Fri May 29 01:42:18 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [3/7] net: dsa: ar8xxx: add regmap support
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477522
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-4-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:18 -0700
+
+All switch registers can now be dumped using regmap/debugfs.
+
+\# cat /sys/kernel/debug/regmap/<mdiobus>/registers
+0000: 00001302
+0004: ...
+...
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/net/dsa/Kconfig | 1 +
+ drivers/net/dsa/ar8xxx.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++
+ drivers/net/dsa/ar8xxx.h | 5 ++++
+ 3 files changed, 66 insertions(+)
+
+diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
+index 2aae541..17fb296 100644
+--- a/drivers/net/dsa/Kconfig
++++ b/drivers/net/dsa/Kconfig
+@@ -68,6 +68,7 @@ config NET_DSA_BCM_SF2
+ config NET_DSA_AR8XXX
+ tristate "Qualcomm Atheros AR8XXX Ethernet switch family support"
+ depends on NET_DSA
++ select REGMAP
+ ---help---
+ This enables support for the Qualcomm Atheros AR8XXX Ethernet
+ switch chips.
+diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
+index 2f0fa4d..327abd4 100644
+--- a/drivers/net/dsa/ar8xxx.c
++++ b/drivers/net/dsa/ar8xxx.c
+@@ -176,6 +176,57 @@ static char *ar8xxx_probe(struct device *host_dev, int sw_addr)
+ }
+ }
+
++static int ar8xxx_regmap_read(void *ctx, uint32_t reg, uint32_t *val)
++{
++ struct dsa_switch *ds = (struct dsa_switch *)ctx;
++
++ *val = ar8xxx_read(ds, reg);
++
++ return 0;
++}
++
++static int ar8xxx_regmap_write(void *ctx, uint32_t reg, uint32_t val)
++{
++ struct dsa_switch *ds = (struct dsa_switch *)ctx;
++
++ ar8xxx_write(ds, reg, val);
++
++ return 0;
++}
++
++static const struct regmap_range ar8xxx_readable_ranges[] = {
++ regmap_reg_range(0x0000, 0x00e4), /* Global control */
++ regmap_reg_range(0x0100, 0x0168), /* EEE control */
++ regmap_reg_range(0x0200, 0x0270), /* Parser control */
++ regmap_reg_range(0x0400, 0x0454), /* ACL */
++ regmap_reg_range(0x0600, 0x0718), /* Lookup */
++ regmap_reg_range(0x0800, 0x0b70), /* QM */
++ regmap_reg_range(0x0C00, 0x0c80), /* PKT */
++ regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */
++ regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */
++ regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */
++ regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */
++ regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */
++ regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */
++ regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */
++
++};
++
++static struct regmap_access_table ar8xxx_readable_table = {
++ .yes_ranges = ar8xxx_readable_ranges,
++ .n_yes_ranges = ARRAY_SIZE(ar8xxx_readable_ranges),
++};
++
++struct regmap_config ar8xxx_regmap_config = {
++ .reg_bits = 16,
++ .val_bits = 32,
++ .reg_stride = 4,
++ .max_register = 0x16ac, /* end MIB - Port6 range */
++ .reg_read = ar8xxx_regmap_read,
++ .reg_write = ar8xxx_regmap_write,
++ .rd_table = &ar8xxx_readable_table,
++};
++
+ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
+ {
+ int reg;
+@@ -219,9 +270,17 @@ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
+
+ static int ar8xxx_setup(struct dsa_switch *ds)
+ {
++ struct ar8xxx_priv *priv = ds_to_priv(ds);
+ struct net_device *netdev = ds->dst->pd->of_netdev;
+ int ret, i, phy_mode;
+
++ /* Start by setting up the register mapping */
++ priv->regmap = devm_regmap_init(ds->master_dev, NULL, ds,
++ &ar8xxx_regmap_config);
++
++ if (IS_ERR(priv->regmap))
++ pr_warn("regmap initialization failed");
++
+ /* Initialize CPU port pad mode (xMII type, delays...) */
+ phy_mode = of_get_phy_mode(netdev->dev.parent->of_node);
+ if (phy_mode < 0) {
+@@ -365,6 +424,7 @@ static void ar8xxx_poll_link(struct dsa_switch *ds)
+
+ static struct dsa_switch_driver ar8xxx_switch_driver = {
+ .tag_protocol = DSA_TAG_PROTO_NONE,
++ .priv_size = sizeof(struct ar8xxx_priv),
+ .probe = ar8xxx_probe,
+ .setup = ar8xxx_setup,
+ .set_addr = ar8xxx_set_addr,
+diff --git a/drivers/net/dsa/ar8xxx.h b/drivers/net/dsa/ar8xxx.h
+index 7c7a125..98cc7ed 100644
+--- a/drivers/net/dsa/ar8xxx.h
++++ b/drivers/net/dsa/ar8xxx.h
+@@ -17,6 +17,11 @@
+ #define __AR8XXX_H
+
+ #include <linux/delay.h>
++#include <linux/regmap.h>
++
++struct ar8xxx_priv {
++ struct regmap *regmap;
++};
+
+ struct ar8xxx_mib_desc {
+ unsigned int size;
+
+From patchwork Fri May 29 01:42:19 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [4/7] net: dsa: add QCA tag support
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477521
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-5-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:19 -0700
+
+QCA tags are used on QCA ar8xxx switch family. This change adds support
+for encap/decap using 2 bytes header mode.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ include/net/dsa.h | 1 +
+ net/dsa/Kconfig | 3 +
+ net/dsa/Makefile | 1 +
+ net/dsa/dsa.c | 5 ++
+ net/dsa/dsa_priv.h | 2 +
+ net/dsa/slave.c | 5 ++
+ net/dsa/tag_qca.c | 158 +++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 7 files changed, 175 insertions(+)
+ create mode 100644 net/dsa/tag_qca.c
+
+diff --git a/include/net/dsa.h b/include/net/dsa.h
+index fbca63b..64ddf6f 100644
+--- a/include/net/dsa.h
++++ b/include/net/dsa.h
+@@ -26,6 +26,7 @@ enum dsa_tag_protocol {
+ DSA_TAG_PROTO_TRAILER,
+ DSA_TAG_PROTO_EDSA,
+ DSA_TAG_PROTO_BRCM,
++ DSA_TAG_PROTO_QCA,
+ };
+
+ #define DSA_MAX_SWITCHES 4
+diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
+index ff7736f..4f3cce1 100644
+--- a/net/dsa/Kconfig
++++ b/net/dsa/Kconfig
+@@ -26,6 +26,9 @@ config NET_DSA_HWMON
+ via the hwmon sysfs interface and exposes the onboard sensors.
+
+ # tagging formats
++config NET_DSA_TAG_QCA
++ bool
++
+ config NET_DSA_TAG_BRCM
+ bool
+
+diff --git a/net/dsa/Makefile b/net/dsa/Makefile
+index da06ed1..9feb86c 100644
+--- a/net/dsa/Makefile
++++ b/net/dsa/Makefile
+@@ -3,6 +3,7 @@ obj-$(CONFIG_NET_DSA) += dsa_core.o
+ dsa_core-y += dsa.o slave.o
+
+ # tagging formats
++dsa_core-$(CONFIG_NET_DSA_TAG_QCA) += tag_qca.o
+ dsa_core-$(CONFIG_NET_DSA_TAG_BRCM) += tag_brcm.o
+ dsa_core-$(CONFIG_NET_DSA_TAG_DSA) += tag_dsa.o
+ dsa_core-$(CONFIG_NET_DSA_TAG_EDSA) += tag_edsa.o
+diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
+index fffb9aa..6010a7d 100644
+--- a/net/dsa/dsa.c
++++ b/net/dsa/dsa.c
+@@ -249,6 +249,11 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
+ dst->rcv = brcm_netdev_ops.rcv;
+ break;
+ #endif
++#ifdef CONFIG_NET_DSA_TAG_QCA
++ case DSA_TAG_PROTO_QCA:
++ dst->rcv = qca_netdev_ops.rcv;
++ break;
++#endif
+ case DSA_TAG_PROTO_NONE:
+ break;
+ default:
+diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
+index d5f1f9b..350c94b 100644
+--- a/net/dsa/dsa_priv.h
++++ b/net/dsa/dsa_priv.h
+@@ -74,5 +74,7 @@ extern const struct dsa_device_ops trailer_netdev_ops;
+ /* tag_brcm.c */
+ extern const struct dsa_device_ops brcm_netdev_ops;
+
++/* tag_qca.c */
++extern const struct dsa_device_ops qca_netdev_ops;
+
+ #endif
+diff --git a/net/dsa/slave.c b/net/dsa/slave.c
+index 04ffad3..cd8f552 100644
+--- a/net/dsa/slave.c
++++ b/net/dsa/slave.c
+@@ -925,6 +925,11 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
+ p->xmit = brcm_netdev_ops.xmit;
+ break;
+ #endif
++#ifdef CONFIG_NET_DSA_TAG_QCA
++ case DSA_TAG_PROTO_QCA:
++ p->xmit = qca_netdev_ops.xmit;
++ break;
++#endif
+ default:
+ p->xmit = dsa_slave_notag_xmit;
+ break;
+diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
+new file mode 100644
+index 0000000..8f02196
+--- /dev/null
++++ b/net/dsa/tag_qca.c
+@@ -0,0 +1,158 @@
++/*
++ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 and
++ * only version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/etherdevice.h>
++#include "dsa_priv.h"
++
++#define QCA_HDR_LEN 2
++#define QCA_HDR_VERSION 0x2
++
++#define QCA_HDR_RECV_VERSION_MASK GENMASK(15, 14)
++#define QCA_HDR_RECV_VERSION_S 14
++#define QCA_HDR_RECV_PRIORITY_MASK GENMASK(13, 11)
++#define QCA_HDR_RECV_PRIORITY_S 11
++#define QCA_HDR_RECV_TYPE_MASK GENMASK(10, 6)
++#define QCA_HDR_RECV_TYPE_S 6
++#define QCA_HDR_RECV_FRAME_IS_TAGGED BIT(3)
++#define QCA_HDR_RECV_SOURCE_PORT_MASK GENMASK(2, 0)
++
++#define QCA_HDR_XMIT_VERSION_MASK GENMASK(15, 14)
++#define QCA_HDR_XMIT_VERSION_S 14
++#define QCA_HDR_XMIT_PRIORITY_MASK GENMASK(13, 11)
++#define QCA_HDR_XMIT_PRIORITY_S 11
++#define QCA_HDR_XMIT_CONTROL_MASK GENMASK(10, 8)
++#define QCA_HDR_XMIT_CONTROL_S 8
++#define QCA_HDR_XMIT_FROM_CPU BIT(7)
++#define QCA_HDR_XMIT_DP_BIT_MASK GENMASK(6, 0)
++
++static inline int reg_to_port(int reg)
++{
++ if (reg < 5)
++ return reg + 1;
++
++ return -1;
++}
++
++static inline int port_to_reg(int port)
++{
++ if (port >= 1 && port <= 6)
++ return port - 1;
++
++ return -1;
++}
++
++static netdev_tx_t qca_tag_xmit(struct sk_buff *skb, struct net_device *dev)
++{
++ struct dsa_slave_priv *p = netdev_priv(dev);
++ u16 *phdr, hdr;
++
++ dev->stats.tx_packets++;
++ dev->stats.tx_bytes += skb->len;
++
++ if (skb_cow_head(skb, 0) < 0)
++ goto out_free;
++
++ skb_push(skb, QCA_HDR_LEN);
++
++ memmove(skb->data, skb->data + QCA_HDR_LEN, 2 * ETH_ALEN);
++ phdr = (u16 *)(skb->data + 2 * ETH_ALEN);
++
++ /* Set the version field, and set destination port information */
++ hdr = QCA_HDR_VERSION << QCA_HDR_XMIT_VERSION_S |
++ QCA_HDR_XMIT_FROM_CPU |
++ 1 << reg_to_port(p->port);
++
++ *phdr = htons(hdr);
++
++ skb->dev = p->parent->dst->master_netdev;
++ dev_queue_xmit(skb);
++
++ return NETDEV_TX_OK;
++
++out_free:
++ kfree_skb(skb);
++ return NETDEV_TX_OK;
++}
++
++static int qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
++ struct packet_type *pt, struct net_device *orig_dev)
++{
++ struct dsa_switch_tree *dst = dev->dsa_ptr;
++ struct dsa_switch *ds;
++ u8 ver;
++ int port, phy;
++ __be16 *phdr, hdr;
++
++ if (unlikely(!dst))
++ goto out_drop;
++
++ skb = skb_unshare(skb, GFP_ATOMIC);
++ if (!skb)
++ goto out;
++
++ if (unlikely(!pskb_may_pull(skb, QCA_HDR_LEN)))
++ goto out_drop;
++
++ /* Ethernet is added by the switch between src addr and Ethertype
++ * At this point, skb->data points to ethertype so header should be
++ * right before
++ */
++ phdr = (__be16 *)(skb->data - 2);
++ hdr = ntohs(*phdr);
++
++ /* Make sure the version is correct */
++ ver = (hdr & QCA_HDR_RECV_VERSION_MASK) >> QCA_HDR_RECV_VERSION_S;
++ if (unlikely(ver != QCA_HDR_VERSION))
++ goto out_drop;
++
++ /* Remove QCA tag and recalculate checksum */
++ skb_pull_rcsum(skb, QCA_HDR_LEN);
++ memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - QCA_HDR_LEN,
++ ETH_HLEN - QCA_HDR_LEN);
++
++ /* This protocol doesn't support cascading multiple switches so it's
++ * safe to assume the switch is first in the tree
++ */
++ ds = dst->ds[0];
++ if (!ds)
++ goto out_drop;
++
++ /* Get source port information */
++ port = (hdr & QCA_HDR_RECV_SOURCE_PORT_MASK);
++ phy = port_to_reg(port);
++ if (unlikely(phy < 0) || !ds->ports[phy])
++ goto out_drop;
++
++ /* Update skb & forward the frame accordingly */
++ skb_push(skb, ETH_HLEN);
++ skb->pkt_type = PACKET_HOST;
++ skb->dev = ds->ports[phy];
++ skb->protocol = eth_type_trans(skb, skb->dev);
++
++ skb->dev->stats.rx_packets++;
++ skb->dev->stats.rx_bytes += skb->len;
++
++ netif_receive_skb(skb);
++
++ return 0;
++
++out_drop:
++ kfree_skb(skb);
++out:
++ return 0;
++}
++
++const struct dsa_device_ops qca_netdev_ops = {
++ .xmit = qca_tag_xmit,
++ .rcv = qca_tag_rcv,
++};
+
+From patchwork Fri May 29 01:42:20 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [5/7] net: dsa: ar8xxx: enable QCA header support on AR8xxx
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477527
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-6-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:20 -0700
+
+This change enable support for the QCA headers in QCA83337 driver.
+A 2 bytes header will be added by the switch on every incoming packet
+to identify the ingress port, and the DSA tagging code will add a
+similar 2 bytes header to control which port is used to send a
+particular packet.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/net/dsa/Kconfig | 1 +
+ drivers/net/dsa/ar8xxx.c | 28 ++++++++++++++++++++++++++--
+ drivers/net/dsa/ar8xxx.h | 22 ++++++++++++++++++++++
+ 3 files changed, 49 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
+index 17fb296..fa8b484 100644
+--- a/drivers/net/dsa/Kconfig
++++ b/drivers/net/dsa/Kconfig
+@@ -68,6 +68,7 @@ config NET_DSA_BCM_SF2
+ config NET_DSA_AR8XXX
+ tristate "Qualcomm Atheros AR8XXX Ethernet switch family support"
+ depends on NET_DSA
++ select NET_DSA_TAG_QCA
+ select REGMAP
+ ---help---
+ This enables support for the Qualcomm Atheros AR8XXX Ethernet
+diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
+index 327abd4..4044614 100644
+--- a/drivers/net/dsa/ar8xxx.c
++++ b/drivers/net/dsa/ar8xxx.c
+@@ -292,15 +292,31 @@ static int ar8xxx_setup(struct dsa_switch *ds)
+ if (ret < 0)
+ return ret;
+
++ /* Enable CPU Port */
++ ar8xxx_reg_set(ds, AR8327_REG_GLOBAL_FW_CTRL0,
++ AR8327_GLOBAL_FW_CTRL0_CPU_PORT_EN);
++
+ /* Enable MIB counters */
+ ar8xxx_reg_set(ds, AR8327_REG_MIB, AR8327_MIB_CPU_KEEP);
+ ar8xxx_write(ds, AR8327_REG_MODULE_EN, AR8327_MODULE_EN_MIB);
+
++ /* Enable QCA header mode on Port 0 */
++ ar8xxx_write(ds, AR8327_REG_PORT_HDR_CTRL(0),
++ AR8327_PORT_HDR_CTRL_ALL << AR8327_PORT_HDR_CTRL_TX_S |
++ AR8327_PORT_HDR_CTRL_ALL << AR8327_PORT_HDR_CTRL_RX_S);
++
+ /* Disable forwarding by default on all ports */
+ for (i = 0; i < AR8327_NUM_PORTS; i++)
+ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(i),
+ AR8327_PORT_LOOKUP_MEMBER, 0);
+
++ /* Forward all unknown frames to CPU port for Linux processing */
++ ar8xxx_write(ds, AR8327_REG_GLOBAL_FW_CTRL1,
++ BIT(0) << AR8327_GLOBAL_FW_CTRL1_IGMP_DP_S |
++ BIT(0) << AR8327_GLOBAL_FW_CTRL1_BC_DP_S |
++ BIT(0) << AR8327_GLOBAL_FW_CTRL1_MC_DP_S |
++ BIT(0) << AR8327_GLOBAL_FW_CTRL1_UC_DP_S);
++
+ /* Setup connection between CPU ports & PHYs */
+ for (i = 0; i < DSA_MAX_PORTS; i++) {
+ /* CPU port gets connected to all PHYs in the switch */
+@@ -312,8 +328,16 @@ static int ar8xxx_setup(struct dsa_switch *ds)
+
+ /* Invividual PHYs gets connected to CPU port only */
+ if (ds->phys_port_mask & BIT(i)) {
+- ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(phy_to_port(i)),
++ int phy = phy_to_port(i);
++
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(phy),
+ AR8327_PORT_LOOKUP_MEMBER, BIT(0));
++
++ /* Disable Auto-learning by default so the switch
++ * doesn't try to forward the frame to another port
++ */
++ ar8xxx_reg_clear(ds, AR8327_PORT_LOOKUP_CTRL(phy),
++ AR8327_PORT_LOOKUP_LEARN);
+ }
+ }
+
+@@ -423,7 +447,7 @@ static void ar8xxx_poll_link(struct dsa_switch *ds)
+ }
+
+ static struct dsa_switch_driver ar8xxx_switch_driver = {
+- .tag_protocol = DSA_TAG_PROTO_NONE,
++ .tag_protocol = DSA_TAG_PROTO_QCA,
+ .priv_size = sizeof(struct ar8xxx_priv),
+ .probe = ar8xxx_probe,
+ .setup = ar8xxx_setup,
+diff --git a/drivers/net/dsa/ar8xxx.h b/drivers/net/dsa/ar8xxx.h
+index 98cc7ed..e68b92a 100644
+--- a/drivers/net/dsa/ar8xxx.h
++++ b/drivers/net/dsa/ar8xxx.h
+@@ -62,6 +62,28 @@ struct ar8xxx_mib_desc {
+ #define AR8XXX_PORT_STATUS_LINK_AUTO BIT(9)
+ #define AR8XXX_PORT_STATUS_LINK_PAUSE BIT(10)
+
++#define AR8327_REG_PORT_HDR_CTRL(_i) (0x9c + (_i * 4))
++#define AR8327_PORT_HDR_CTRL_RX_MASK GENMASK(3, 2)
++#define AR8327_PORT_HDR_CTRL_RX_S 2
++#define AR8327_PORT_HDR_CTRL_TX_MASK GENMASK(1, 0)
++#define AR8327_PORT_HDR_CTRL_TX_S 0
++#define AR8327_PORT_HDR_CTRL_ALL 2
++#define AR8327_PORT_HDR_CTRL_MGMT 1
++#define AR8327_PORT_HDR_CTRL_NONE 0
++
++#define AR8327_REG_GLOBAL_FW_CTRL0 0x620
++#define AR8327_GLOBAL_FW_CTRL0_CPU_PORT_EN BIT(10)
++
++#define AR8327_REG_GLOBAL_FW_CTRL1 0x624
++#define AR8327_GLOBAL_FW_CTRL1_IGMP_DP_MASK GENMASK(30, 24)
++#define AR8327_GLOBAL_FW_CTRL1_IGMP_DP_S 24
++#define AR8327_GLOBAL_FW_CTRL1_BC_DP_MASK GENMASK(22, 16)
++#define AR8327_GLOBAL_FW_CTRL1_BC_DP_S 16
++#define AR8327_GLOBAL_FW_CTRL1_MC_DP_MASK GENMASK(14, 8)
++#define AR8327_GLOBAL_FW_CTRL1_MC_DP_S 8
++#define AR8327_GLOBAL_FW_CTRL1_UC_DP_MASK GENMASK(6, 0)
++#define AR8327_GLOBAL_FW_CTRL1_UC_DP_S 0
++
+ #define AR8327_PORT_LOOKUP_CTRL(_i) (0x660 + (_i) * 0xc)
+ #define AR8327_PORT_LOOKUP_MEMBER GENMASK(6, 0)
+ #define AR8327_PORT_LOOKUP_IN_MODE GENMASK(9, 8)
+
+From patchwork Fri May 29 01:42:21 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [6/7] net: dsa: ar8xxx: add support for second xMII interfaces
+ through DT
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477525
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-7-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:21 -0700
+
+This patch is adding support for port6 specific options to device tree.
+They can be used to setup the second xMII interface, and connect it to
+one of the switch port.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/net/dsa/ar8xxx.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 50 insertions(+)
+
+diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
+index 4044614..7559249 100644
+--- a/drivers/net/dsa/ar8xxx.c
++++ b/drivers/net/dsa/ar8xxx.c
+@@ -19,6 +19,7 @@
+ #include <net/dsa.h>
+ #include <linux/phy.h>
+ #include <linux/of_net.h>
++#include <linux/of_platform.h>
+
+ #include "ar8xxx.h"
+
+@@ -260,6 +261,9 @@ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
+ ar8xxx_write(ds, AR8327_REG_PORT5_PAD_CTRL,
+ AR8327_PORT_PAD_RGMII_RX_DELAY_EN);
+ break;
++ case PHY_INTERFACE_MODE_SGMII:
++ ar8xxx_write(ds, reg, AR8327_PORT_PAD_SGMII_EN);
++ break;
+ default:
+ pr_err("xMII mode %d not supported\n", mode);
+ return -EINVAL;
+@@ -268,6 +272,48 @@ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
+ return 0;
+ }
+
++static int ar8xxx_of_setup(struct dsa_switch *ds)
++{
++ struct device_node *dn = ds->pd->of_node;
++ const char *s_phymode;
++ int ret, mode;
++ u32 phy_id, ctrl;
++
++ /* If port6-phy-mode property exists, configure it accordingly */
++ if (!of_property_read_string(dn, "qca,port6-phy-mode", &s_phymode)) {
++ for (mode = 0; mode < PHY_INTERFACE_MODE_MAX; mode++)
++ if (!strcasecmp(s_phymode, phy_modes(mode)))
++ break;
++
++ if (mode == PHY_INTERFACE_MODE_MAX)
++ pr_err("Unknown phy-mode: \"%s\"\n", s_phymode);
++
++ ret = ar8xxx_set_pad_ctrl(ds, 6, mode);
++ if (ret < 0)
++ return ret;
++ }
++
++ /* If a phy ID is specified for PORT6 mac, connect them together */
++ if (!of_property_read_u32(dn, "qca,port6-phy-id", &phy_id)) {
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(6),
++ AR8327_PORT_LOOKUP_MEMBER, BIT(phy_to_port(phy_id)));
++ ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(phy_to_port(phy_id)),
++ AR8327_PORT_LOOKUP_MEMBER, BIT(6));
++
++ /* We want the switch to be pass-through and act like a PHY on
++ * these ports. So BC/MC/UC & IGMP frames need to be accepted
++ */
++ ctrl = BIT(phy_to_port(phy_id)) | BIT(6);
++ ar8xxx_reg_set(ds, AR8327_REG_GLOBAL_FW_CTRL1,
++ ctrl << AR8327_GLOBAL_FW_CTRL1_IGMP_DP_S |
++ ctrl << AR8327_GLOBAL_FW_CTRL1_BC_DP_S |
++ ctrl << AR8327_GLOBAL_FW_CTRL1_MC_DP_S |
++ ctrl << AR8327_GLOBAL_FW_CTRL1_UC_DP_S);
++ }
++
++ return 0;
++}
++
+ static int ar8xxx_setup(struct dsa_switch *ds)
+ {
+ struct ar8xxx_priv *priv = ds_to_priv(ds);
+@@ -341,6 +387,10 @@ static int ar8xxx_setup(struct dsa_switch *ds)
+ }
+ }
+
++ ret = ar8xxx_of_setup(ds);
++ if (ret < 0)
++ return ret;
++
+ return 0;
+ }
+
+
+From patchwork Fri May 29 01:42:22 2015
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [7/7] Documentation: devicetree: add ar8xxx binding
+From: Mathieu Olivari <mathieu@codeaurora.org>
+X-Patchwork-Id: 477528
+X-Patchwork-Delegate: davem@davemloft.net
+Message-Id: <1432863742-18427-8-git-send-email-mathieu@codeaurora.org>
+To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
+ ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
+ davem@davemloft.net, mathieu@codeaurora.org, andrew@lunn.ch,
+ f.fainelli@gmail.com, linux@roeck-us.net, gang.chen.5i5j@gmail.com,
+ jiri@resnulli.us, leitec@staticky.com, fabf@skynet.be,
+ alexander.h.duyck@intel.com, pavel.nakonechny@skitlab.ru,
+ joe@perches.com, sfeldma@gmail.com, nbd@openwrt.org, juhosg@openwrt.org
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ netdev@vger.kernel.org
+Date: Thu, 28 May 2015 18:42:22 -0700
+
+Add device-tree binding for ar8xxx switch families.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ .../devicetree/bindings/net/dsa/qca-ar8xxx.txt | 70 ++++++++++++++++++++++
+ 1 file changed, 70 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/net/dsa/qca-ar8xxx.txt
+
+diff --git a/Documentation/devicetree/bindings/net/dsa/qca-ar8xxx.txt b/Documentation/devicetree/bindings/net/dsa/qca-ar8xxx.txt
+new file mode 100644
+index 0000000..f4fd3f1
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/dsa/qca-ar8xxx.txt
+@@ -0,0 +1,70 @@
++* Qualcomm Atheros AR8xxx switch family
++
++Required properties:
++
++- compatible: should be "qca,ar8xxx"
++- dsa,mii-bus: phandle to the MDIO bus controller, see dsa/dsa.txt
++- dsa,ethernet: phandle to the CPU network interface controller, see dsa/dsa.txt
++- #size-cells: must be 0
++- #address-cells: must be 2, see dsa/dsa.txt
++
++Subnodes:
++
++The integrated switch subnode should be specified according to the binding
++described in dsa/dsa.txt.
++
++Optional properties:
++
++- qca,port6-phy-mode: if specified, the driver will configure Port 6 in the
++ given phy-mode. See Documentation/devicetree/bindings/net/ethernet.txt for
++ the list of valid phy-mode.
++
++- qca,port6-phy-id: if specified, the driver will connect Port 6 to the PHY
++ given as a parameter. In this case, Port6 and the corresponding PHY will be
++ isolated from the rest of the switch. From a system perspective, they will
++ act as a regular PHY.
++
++Example:
++
++ dsa@0 {
++ compatible = "qca,ar8xxx";
++ #address-cells = <2>;
++ #size-cells = <0>;
++
++ dsa,ethernet = <ðernet0>;
++ dsa,mii-bus = <&mii_bus0>;
++
++ switch@0 {
++ #address-cells = <1>;
++ #size-cells = <0>;
++ reg = <0 0>; /* MDIO address 0, switch 0 in tree */
++
++ qca,port6-phy-mode = "sgmii";
++ qca,port6-phy-id = <4>;
++
++ port@0 {
++ reg = <11>;
++ label = "cpu";
++ };
++
++ port@1 {
++ reg = <0>;
++ label = "lan1";
++ };
++
++ port@2 {
++ reg = <1>;
++ label = "lan2";
++ };
++
++ port@3 {
++ reg = <2>;
++ label = "lan3";
++ };
++
++ port@4 {
++ reg = <3>;
++ label = "lan4";
++ };
++ };
++ };
projects / openwrt / staging / yousong.git / commitdiff