ar71xx: add preliminary kernel support for several RB SPI NOR devices
[openwrt/staging/yousong.git] / target / linux / ar71xx / files / arch / mips / ath79 / mach-rbspi.c
index 5418652..b6b3338 100644 (file)
@@ -3,6 +3,17 @@
  *
  *  - MikroTik RouterBOARD mAP L-2nD
  *  - MikroTik RouterBOARD 941L-2nD
+ *  - MikroTik RouterBOARD 951Ui-2nD
+ *  - MikroTik RouterBOARD 750UP r2
+ *  - MikroTik RouterBOARD 750 r2
+ *
+ *  Preliminary support for the following hardware
+ *  - MikroTik RouterBOARD wAP2nD
+ *  - MikroTik RouterBOARD cAP2nD
+ *  - MikroTik RouterBOARD mAP2nD
+ *  Furthermore, the cAP lite (cAPL2nD) appears to feature the exact same
+ *  hardware as the mAP L-2nD. It is unknown if they share the same board
+ *  identifier.
  *
  *  Copyright (C) 2017 Thibaut VARENE <varenet@parisc-linux.org>
  *
@@ -16,6 +27,9 @@
 #include <linux/routerboot.h>
 #include <linux/gpio.h>
 
+#include <linux/spi/spi.h>
+#include <linux/spi/74x164.h>
+
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 
@@ -40,6 +54,8 @@
 #define RBSPI_HAS_USB          BIT(0)
 #define RBSPI_HAS_WLAN         BIT(1)
 #define RBSPI_HAS_WAN4         BIT(2)  /* has WAN port on PHY4 */
+#define RBSPI_HAS_SSR          BIT(3)  /* has an SSR on SPI bus 0 */
+#define RBSPI_HAS_POE          BIT(4)
 
 #define RB_ROUTERBOOT_OFFSET    0x0000
 #define RB_BIOS_SIZE            0x1000
@@ -166,6 +182,194 @@ static struct gpio_led rbhapl_leds[] __initdata = {
        },
 };
 
+/* common RB SSRs */
+#define RBSPI_SSR_GPIO_BASE    40
+#define RBSPI_SSR_GPIO(bit)    (RBSPI_SSR_GPIO_BASE + (bit))
+
+/* RB 951Ui-2nD gpios */
+#define RB952_SSR_BIT_LED_LAN1 0
+#define RB952_SSR_BIT_LED_LAN2 1
+#define RB952_SSR_BIT_LED_LAN3 2
+#define RB952_SSR_BIT_LED_LAN4 3
+#define RB952_SSR_BIT_LED_LAN5 4
+#define RB952_SSR_BIT_USB_POWER        5
+#define RB952_SSR_BIT_LED_WLAN 6
+#define RB952_GPIO_SSR_CS      11
+#define RB952_GPIO_LED_USER    4
+#define RB952_GPIO_POE_POWER   14
+#define RB952_GPIO_POE_STATUS  12
+#define RB952_GPIO_USB_POWER   RBSPI_SSR_GPIO(RB952_SSR_BIT_USB_POWER)
+#define RB952_GPIO_LED_LAN1    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_LAN1)
+#define RB952_GPIO_LED_LAN2    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_LAN2)
+#define RB952_GPIO_LED_LAN3    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_LAN3)
+#define RB952_GPIO_LED_LAN4    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_LAN4)
+#define RB952_GPIO_LED_LAN5    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_LAN5)
+#define RB952_GPIO_LED_WLAN    RBSPI_SSR_GPIO(RB952_SSR_BIT_LED_WLAN)
+
+static struct gpio_led rb952_leds[] __initdata = {
+       {
+               .name = "rb:green:user",
+               .gpio = RB952_GPIO_LED_USER,
+               .active_low = 0,
+       }, {
+               .name = "rb:blue:wlan",
+               .gpio = RB952_GPIO_LED_WLAN,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:port1",
+               .gpio = RB952_GPIO_LED_LAN1,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:port2",
+               .gpio = RB952_GPIO_LED_LAN2,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:port3",
+               .gpio = RB952_GPIO_LED_LAN3,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:port4",
+               .gpio = RB952_GPIO_LED_LAN4,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:port5",
+               .gpio = RB952_GPIO_LED_LAN5,
+               .active_low = 1,
+       },
+};
+
+/* RB wAP-2nD gpios */
+#define RBWAP_GPIO_LED_USER    14
+#define RBWAP_GPIO_LED_WLAN    11
+
+static struct gpio_led rbwap_leds[] __initdata = {
+       {
+               .name = "rb:green:user",
+               .gpio = RBWAP_GPIO_LED_USER,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:wlan",
+               .gpio = RBWAP_GPIO_LED_WLAN,
+               .active_low = 1,
+       },
+};
+
+/* RB cAP-2nD gpios */
+#define RBCAP_GPIO_LED_1       14
+#define RBCAP_GPIO_LED_2       12
+#define RBCAP_GPIO_LED_3       11
+#define RBCAP_GPIO_LED_4       4
+#define RBCAP_GPIO_LED_ALL     13
+
+static struct gpio_led rbcap_leds[] __initdata = {
+       {
+               .name = "rb:green:rssi1",
+               .gpio = RBCAP_GPIO_LED_1,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:rssi2",
+               .gpio = RBCAP_GPIO_LED_2,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:rssi3",
+               .gpio = RBCAP_GPIO_LED_3,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:rssi4",
+               .gpio = RBCAP_GPIO_LED_4,
+               .active_low = 1,
+       },
+};
+
+/* RB mAP-2nD gpios */
+#define RBMAP_SSR_BIT_LED_LAN1 0
+#define RBMAP_SSR_BIT_LED_LAN2 1
+#define RBMAP_SSR_BIT_LED_POEO 2
+#define RBMAP_SSR_BIT_LED_USER 3
+#define RBMAP_SSR_BIT_LED_WLAN 4
+#define RBMAP_SSR_BIT_USB_POWER        5
+#define RBMAP_SSR_BIT_LED_APCAP        6
+#define RBMAP_GPIO_SSR_CS      11
+#define RBMAP_GPIO_LED_POWER   4
+#define RBMAP_GPIO_POE_POWER   14
+#define RBMAP_GPIO_POE_STATUS  12
+#define RBMAP_GPIO_USB_POWER   RBSPI_SSR_GPIO(RBMAP_SSR_BIT_USB_POWER)
+#define RBMAP_GPIO_LED_LAN1    RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_LAN1)
+#define RBMAP_GPIO_LED_LAN2    RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_LAN2)
+#define RBMAP_GPIO_LED_POEO    RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_POEO)
+#define RBMAP_GPIO_LED_USER    RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_USER)
+#define RBMAP_GPIO_LED_WLAN    RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_WLAN)
+#define RBMAP_GPIO_LED_APCAP   RBSPI_SSR_GPIO(RBMAP_SSR_BIT_LED_APCAP)
+
+static struct gpio_led rbmap_leds[] __initdata = {
+       {
+               .name = "rb:green:power",
+               .gpio = RBMAP_GPIO_LED_POWER,
+               .active_low = 1,
+               .default_state = LEDS_GPIO_DEFSTATE_ON,
+       }, {
+               .name = "rb:green:eth1",
+               .gpio = RBMAP_GPIO_LED_LAN1,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:eth2",
+               .gpio = RBMAP_GPIO_LED_WLAN,
+               .active_low = 1,
+       }, {
+               .name = "rb:red:poe_out",
+               .gpio = RBMAP_GPIO_LED_POEO,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:user",
+               .gpio = RBMAP_GPIO_LED_USER,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:wlan",
+               .gpio = RBMAP_GPIO_LED_WLAN,
+               .active_low = 1,
+       }, {
+               .name = "rb:green:ap_cap",
+               .gpio = RBMAP_GPIO_LED_APCAP,
+               .active_low = 1,
+       },
+};
+
+
+static struct gen_74x164_chip_platform_data rbspi_ssr_data = {
+       .base = RBSPI_SSR_GPIO_BASE,
+};
+
+/* the spi-ath79 driver can only natively handle CS0. Other CS are bit-banged */
+static int rbspi_spi_cs_gpios[] = {
+       -ENOENT,        /* CS0 is always -ENOENT: natively handled */
+       -ENOENT,        /* CS1 can be updated by the code as necessary */
+};
+
+static struct ath79_spi_platform_data rbspi_ath79_spi_data = {
+       .bus_num = 0,
+       .cs_gpios = rbspi_spi_cs_gpios,
+};
+
+/*
+ * Global spi_board_info: devices that don't have an SSR only have the SPI NOR
+ * flash on bus0 CS0, while devices that have an SSR add it on the same bus CS1
+ */
+static struct spi_board_info rbspi_spi_info[] = {
+       {
+               .bus_num        = 0,
+               .chip_select    = 0,
+               .max_speed_hz   = 25000000,
+               .modalias       = "m25p80",
+               .platform_data  = &rbspi_spi_flash_data,
+       }, {
+               .bus_num        = 0,
+               .chip_select    = 1,
+               .max_speed_hz   = 25000000,
+               .modalias       = "74x164",
+               .platform_data  = &rbspi_ssr_data,
+       }
+};
+
 void __init rbspi_wlan_init(int wmac_offset)
 {
        char *art_buf;
@@ -209,7 +413,16 @@ static int __init rbspi_platform_setup(void)
  */
 static void __init rbspi_peripherals_setup(u32 flags)
 {
-       ath79_register_m25p80(&rbspi_spi_flash_data);
+       unsigned spi_n;
+
+       if (flags & RBSPI_HAS_SSR)
+               spi_n = ARRAY_SIZE(rbspi_spi_info);
+       else
+               spi_n = 1;     /* only one device on bus0 */
+
+       rbspi_ath79_spi_data.num_chipselect = spi_n;
+       rbspi_ath79_spi_data.cs_gpios = rbspi_spi_cs_gpios;
+       ath79_register_spi(&rbspi_ath79_spi_data, rbspi_spi_info, spi_n);
 
        if (flags & RBSPI_HAS_USB)
                ath79_register_usb();
@@ -314,5 +527,150 @@ static void __init rbhapl_setup(void)
                                        rbspi_gpio_keys_reset16);
 }
 
+/*
+ * The hAP, hEX lite and hEX PoE lite share the same platform
+ */
+static void __init rbspi_952_750r2_setup(u32 flags)
+{
+       if (flags & RBSPI_HAS_SSR)
+               rbspi_spi_cs_gpios[1] = RB952_GPIO_SSR_CS;
+
+       rbspi_peripherals_setup(flags);
+
+       /* GMAC1 is HW MAC + 1, WLAN MAC IS HW MAC + 5 */
+       rbspi_network_setup(flags, 1, 5);
+
+       if (flags & RBSPI_HAS_USB)
+               gpio_request_one(RB952_GPIO_USB_POWER,
+                               GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+                               "USB power");
+
+       if (flags & RBSPI_HAS_POE)
+               gpio_request_one(RB952_GPIO_POE_POWER,
+                               GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+                               "POE power");
+
+       ath79_register_leds_gpio(-1, ARRAY_SIZE(rb952_leds), rb952_leds);
+
+       /* These devices have a single reset button as gpio 16 */
+       ath79_register_gpio_keys_polled(-1, RBSPI_KEYS_POLL_INTERVAL,
+                                       ARRAY_SIZE(rbspi_gpio_keys_reset16),
+                                       rbspi_gpio_keys_reset16);
+}
+
+/*
+ * Init the hAP hardware.
+ * The 951Ui-2nD (hAP) has 5 ethernet ports, with ports 2-5 being assigned
+ * to LAN on the casing, and port 1 being assigned to "internet" (WAN).
+ * Port 1 is connected to PHY4 (the ports are labelled in reverse physical
+ * number), so the SoC can be set to connect GMAC0 to PHY4 and GMAC1 to the
+ * internal switch for the LAN ports.
+ * The device also has USB, PoE output and an SSR used for LED multiplexing.
+ */
+static void __init rb952_setup(void)
+{
+       u32 flags = RBSPI_HAS_WLAN | RBSPI_HAS_WAN4 | RBSPI_HAS_USB |
+                       RBSPI_HAS_SSR | RBSPI_HAS_POE;
+
+       if (rbspi_platform_setup())
+               return;
+
+       rbspi_952_750r2_setup(flags);
+}
+
+/*
+ * Init the hEX (PoE) lite hardware.
+ * The 750UP r2 (hEX PoE lite) is nearly identical to the hAP, only without
+ * WLAN. The 750 r2 (hEX lite) is nearly identical to the 750UP r2, only
+ * without USB and POE. It shares the same bootloader board identifier.
+ */
+static void __init rb750upr2_setup(void)
+{
+       u32 flags = RBSPI_HAS_WAN4 | RBSPI_HAS_SSR;
+
+       if (rbspi_platform_setup())
+               return;
+
+       /* differentiate the hEX lite from the hEX PoE lite */
+       if (strstr(mips_get_machine_name(), "750UP r2"))
+               flags |= RBSPI_HAS_USB | RBSPI_HAS_POE;
+
+       rbspi_952_750r2_setup(flags);
+}
+
+/*
+ * Init the wAP hardware (EXPERIMENTAL).
+ * The wAP 2nD has a single ethernet port.
+ */
+static void __init rbwap_setup(void)
+{
+       u32 flags = RBSPI_HAS_WLAN;
+
+       if (rbspi_platform_setup())
+               return;
+
+       rbspi_peripherals_setup(flags);
+
+       /* GMAC1 is HW MAC, WLAN MAC is HW MAC + 1 */
+       rbspi_network_setup(flags, 0, 1);
+
+       ath79_register_leds_gpio(-1, ARRAY_SIZE(rbwap_leds), rbwap_leds);
+}
+
+/*
+ * Init the cAP hardware (EXPERIMENTAL).
+ * The cAP 2nD has a single ethernet port, and a global LED switch.
+ */
+static void __init rbcap_setup(void)
+{
+       u32 flags = RBSPI_HAS_WLAN;
+
+       if (rbspi_platform_setup())
+               return;
+
+       rbspi_peripherals_setup(flags);
+
+       /* GMAC1 is HW MAC, WLAN MAC is HW MAC + 1 */
+       rbspi_network_setup(flags, 0, 1);
+
+       gpio_request_one(RBCAP_GPIO_LED_ALL,
+                        GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+                        "LEDs enable");
+
+       ath79_register_leds_gpio(-1, ARRAY_SIZE(rbcap_leds), rbcap_leds);
+}
+
+/*
+ * Init the mAP hardware (EXPERIMENTAL).
+ * The mAP 2nD has two ethernet ports, PoE output and an SSR for LED
+ * multiplexing.
+ */
+static void __init rbmap_setup(void)
+{
+       u32 flags = RBSPI_HAS_WLAN | RBSPI_HAS_SSR | RBSPI_HAS_POE;
+
+       if (rbspi_platform_setup())
+               return;
+
+       rbspi_spi_cs_gpios[1] = RBMAP_GPIO_SSR_CS;
+       rbspi_peripherals_setup(flags);
+
+       /* GMAC1 is HW MAC, WLAN MAC is HW MAC + 2 */
+       rbspi_network_setup(flags, 0, 2);
+
+       if (flags & RBSPI_HAS_POE)
+               gpio_request_one(RBMAP_GPIO_POE_POWER,
+                               GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+                               "POE power");
+
+       ath79_register_leds_gpio(-1, ARRAY_SIZE(rbmap_leds), rbmap_leds);
+}
+
+
 MIPS_MACHINE_NONAME(ATH79_MACH_RB_MAPL, "map-hb", rbmapl_setup);
 MIPS_MACHINE_NONAME(ATH79_MACH_RB_941, "H951L", rbhapl_setup);
+MIPS_MACHINE_NONAME(ATH79_MACH_RB_952, "952-hb", rb952_setup);
+MIPS_MACHINE_NONAME(ATH79_MACH_RB_750UPR2, "750-hb", rb750upr2_setup);
+MIPS_MACHINE_NONAME(ATH79_MACH_RB_WAP, "wap-hb", rbwap_setup);
+MIPS_MACHINE_NONAME(ATH79_MACH_RB_CAP, "cap-hb", rbcap_setup);
+MIPS_MACHINE_NONAME(ATH79_MACH_RB_MAP, "map2-hb", rbmap_setup);