ar71xx: Chipidea USB device support

[openwrt/staging/florian.git] / target / linux / ar71xx / patches-4.4 / 920-usb-chipidea-AR933x-platform-support.patch

diff --git a/target/linux/ar71xx/patches-4.4/920-usb-chipidea-AR933x-platform-support.patch b/target/linux/ar71xx/patches-4.4/920-usb-chipidea-AR933x-platform-support.patch
new file mode 100644 (file)
index 0000000..41eb7f2
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/920-usb-chipidea-AR933x-platform-support.patch
@@ -0,0 +1,99 @@
+Index: linux-4.4.4/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+===================================================================
+--- linux-4.4.4.orig/arch/mips/include/asm/mach-ath79/ar71xx_regs.h    2016-03-31 21:43:10.595132564 +0300
++++ linux-4.4.4/arch/mips/include/asm/mach-ath79/ar71xx_regs.h 2016-03-31 21:56:21.463152017 +0300
+@@ -641,6 +641,7 @@
+ 
+ #define AR933X_BOOTSTRAP_MDIO_GPIO_EN BIT(18)
+ #define AR933X_BOOTSTRAP_EEPBUSY      BIT(4)
++#define AR933X_BOOTSTRAP_USB_MODE_HOST        BIT(3)
+ #define AR933X_BOOTSTRAP_REF_CLK_40   BIT(0)
+ 
+ #define AR934X_BOOTSTRAP_SW_OPTION8   BIT(23)
+@@ -670,6 +671,8 @@
+ 
+ #define QCA956X_BOOTSTRAP_REF_CLK_40  BIT(2)
+ 
++#define AR933X_USB_CONFIG_HOST_ONLY   BIT(8)
++
+ #define AR934X_PCIE_WMAC_INT_WMAC_MISC                BIT(0)
+ #define AR934X_PCIE_WMAC_INT_WMAC_TX          BIT(1)
+ #define AR934X_PCIE_WMAC_INT_WMAC_RXLP                BIT(2)
+Index: linux-4.4.4/arch/mips/ath79/dev-usb.c
+===================================================================
+--- linux-4.4.4.orig/arch/mips/ath79/dev-usb.c 2016-03-31 21:43:10.407132560 +0300
++++ linux-4.4.4/arch/mips/ath79/dev-usb.c      2016-03-31 21:43:10.707132567 +0300
+@@ -19,6 +19,9 @@
+ #include <linux/platform_device.h>
+ #include <linux/usb/ehci_pdriver.h>
+ #include <linux/usb/ohci_pdriver.h>
++#include <linux/usb/otg.h>
++#include <linux/usb/chipidea.h>
++#include <linux/usb/usb_phy_generic.h>
+ 
+ #include <asm/mach-ath79/ath79.h>
+ #include <asm/mach-ath79/ar71xx_regs.h>
+@@ -170,6 +173,54 @@
+                          &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ }
+ 
++static void __init ar933x_usb_setup_ctrl_config(void)
++{
++      void __iomem *usb_ctrl_base, *usb_config_reg;
++      u32 usb_config;
++
++      usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
++      usb_config_reg = usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG;
++      usb_config = __raw_readl(usb_config_reg);
++      usb_config &= ~AR933X_USB_CONFIG_HOST_ONLY;
++      __raw_writel(usb_config, usb_config_reg);
++      iounmap(usb_ctrl_base);
++}
++
++static void __init ar933x_ci_usb_setup(void)
++{
++      u32 bootstrap;
++      enum usb_dr_mode dr_mode;
++      struct ci_hdrc_platform_data ci_pdata;
++      struct platform_device *phy;
++
++      bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
++      if (bootstrap & AR933X_BOOTSTRAP_USB_MODE_HOST) {
++              dr_mode = USB_DR_MODE_HOST;
++      } else {
++              dr_mode = USB_DR_MODE_PERIPHERAL;
++              ar933x_usb_setup_ctrl_config();
++      }
++
++      memset(&ci_pdata, 0, sizeof(ci_pdata));
++      ci_pdata.name = "ci_hdrc_ar933x";
++      ci_pdata.capoffset = DEF_CAPOFFSET;
++      ci_pdata.dr_mode = dr_mode;
++      ci_pdata.flags = CI_HDRC_DUAL_ROLE_NOT_OTG | CI_HDRC_DP_ALWAYS_PULLUP;
++      ci_pdata.vbus_extcon.edev = ERR_PTR(-ENODEV);
++      ci_pdata.id_extcon.edev = ERR_PTR(-ENODEV);
++      ci_pdata.itc_setting = 1;
++
++      /* register a nop PHY */
++      phy = usb_phy_generic_register();
++      if (IS_ERR(phy))
++              return;
++
++      ath79_usb_register("ci_hdrc", -1,
++                         AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
++                         ATH79_CPU_IRQ(3),
++                         &ci_pdata, sizeof(ci_pdata));
++}
++
+ static void __init ar933x_usb_setup(void)
+ {
+       ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
+@@ -185,6 +236,8 @@
+                          AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
+                          ATH79_CPU_IRQ(3),
+                          &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
++
++      ar933x_ci_usb_setup();
+ }
+ 
+ static void enable_tx_tx_idp_violation_fix(unsigned base)