ar71xx: add kernel support for MR3420v2

[juhosg: use gpio_request_one to enable the USB power]

Patch-by: Dmytro <dioptimizer@gmail.com>
Signed-off-by: Gabor Juhos <juhosg@opewrt.org>

SVN-Revision: 35961

target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wr841n-v8.c

@@ -1,5 +1,5 @@
 /*
- *  TP-LINK TL-WR841N/ND v8 board support
+ *  TP-LINK TL-WR841N/ND v8/TL-MR3420 v2 board support
  *
  *  Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
  *
@@ -8,6 +8,7 @@
  *  by the Free Software Foundation.
  */
 
+#include <linux/gpio.h>
 #include <linux/platform_device.h>
 
 #include <asm/mach-ath79/ath79.h>
@@ -18,6 +19,7 @@
 #include "dev-gpio-buttons.h"
 #include "dev-leds-gpio.h"
 #include "dev-m25p80.h"
+#include "dev-usb.h"
 #include "dev-wmac.h"
 #include "machtypes.h"
 
@@ -31,7 +33,10 @@
 #define TL_WR841NV8_GPIO_LED_SYSTEM	14
 
 #define TL_WR841NV8_GPIO_BTN_RESET	17
-#define TL_WR841NV8_GPIO_SW_RFKILL	16
+#define TL_WR841NV8_GPIO_SW_RFKILL	16	/* WPS for MR3420 v2 */
+
+#define TL_MR3420V2_GPIO_LED_3G	11
+#define TL_MR3420V2_GPIO_USB_POWER	4
 
 #define TL_WR841NV8_KEYS_POLL_INTERVAL	20	/* msecs */
 #define TL_WR841NV8_KEYS_DEBOUNCE_INTERVAL (3 * TL_WR841NV8_KEYS_POLL_INTERVAL)
@@ -78,6 +83,11 @@ static struct gpio_led tl_wr841n_v8_leds_gpio[] __initdata = {
 		.name		= "tp-link:green:wlan",
 		.gpio		= TL_WR841NV8_GPIO_LED_WLAN,
 		.active_low	= 1,
+	}, {
+		/* the 3G LED is only present on the MR3420 v2 */
+		.name		= "tp-link:green:3g",
+		.gpio		= TL_MR3420V2_GPIO_LED_3G,
+		.active_low	= 1,
 	},
 };
 
@@ -99,24 +109,33 @@ static struct gpio_keys_button tl_wr841n_v8_gpio_keys[] __initdata = {
 	}
 };
 
-static void __init tl_wr841n_v8_setup(void)
+static struct gpio_keys_button tl_mr3420v2_gpio_keys[] __initdata = {
+	{
+		.desc		= "Reset button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = TL_WR841NV8_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_WR841NV8_GPIO_BTN_RESET,
+		.active_low	= 1,
+	}, {
+		.desc		= "WPS",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = TL_WR841NV8_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_WR841NV8_GPIO_SW_RFKILL,
+		.active_low	= 0,
+	}
+};
+
+static void __init tl_ap123_setup(void)
 {
 	u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
 	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
 
-	ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr841n_v8_leds_gpio),
-				 tl_wr841n_v8_leds_gpio);
-
-	ath79_register_gpio_keys_polled(1, TL_WR841NV8_KEYS_POLL_INTERVAL,
-					ARRAY_SIZE(tl_wr841n_v8_gpio_keys),
-					tl_wr841n_v8_gpio_keys);
-
 	ath79_register_m25p80(&tl_wr841n_v8_flash_data);
 
 	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_PHY_SWAP);
 
-	ath79_register_mdio(1, 0x0);
-
 	ath79_init_mac(ath79_eth0_data.mac_addr, mac, -1);
 	ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
 
@@ -135,5 +154,43 @@ static void __init tl_wr841n_v8_setup(void)
 	ath79_register_wmac(ee, mac);
 }
 
+static void __init tl_wr841n_v8_setup(void)
+{
+	tl_ap123_setup();
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr841n_v8_leds_gpio) - 1,
+				 tl_wr841n_v8_leds_gpio);
+
+	ath79_register_gpio_keys_polled(1, TL_WR841NV8_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(tl_wr841n_v8_gpio_keys),
+					tl_wr841n_v8_gpio_keys);
+
+	ath79_register_mdio(1, 0x0);
+}
+
 MIPS_MACHINE(ATH79_MACH_TL_WR841N_V8, "TL-WR841N-v8", "TP-LINK TL-WR841N/ND v8",
 	     tl_wr841n_v8_setup);
+
+static void __init tl_mr3420v2_setup(void)
+{
+	tl_ap123_setup();
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr841n_v8_leds_gpio),
+				tl_wr841n_v8_leds_gpio);
+
+	ath79_register_gpio_keys_polled(1, TL_WR841NV8_KEYS_POLL_INTERVAL,
+				ARRAY_SIZE(tl_mr3420v2_gpio_keys),
+				tl_mr3420v2_gpio_keys);
+
+	ath79_register_mdio(0, 0x0);
+
+	/* enable power for the USB port */
+	gpio_request_one(TL_MR3420V2_GPIO_USB_POWER,
+			 GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+			 "USB power");
+
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_TL_MR3420_V2, "TL-MR3420-v2", "TP-LINK TL-MR3420 v2",
+	     tl_mr3420v2_setup);

target/linux/ar71xx/patches-3.8/616-MIPS-ath79-TL-MR3420-v2-support.patch

@@ -0,0 +1,27 @@
+--- a/arch/mips/ath79/Kconfig
++++ b/arch/mips/ath79/Kconfig
+@@ -585,12 +585,13 @@ config ATH79_MACH_TL_WR841N_V1
+ 	select ATH79_DEV_M25P80
+ 
+ config ATH79_MACH_TL_WR841N_V8
+-	bool "TP-LINK TL-WR841N/ND v8 support"
++	bool "TP-LINK TL-WR841N/ND v8/TL-MR3420 v2 support"
+ 	select SOC_AR934X
+ 	select ATH79_DEV_ETH
+ 	select ATH79_DEV_GPIO_BUTTONS
+ 	select ATH79_DEV_LEDS_GPIO
+ 	select ATH79_DEV_M25P80
++	select ATH79_DEV_USB
+ 	select ATH79_DEV_WMAC
+ 
+ config ATH79_MACH_TL_WR941ND
+--- a/arch/mips/ath79/machtypes.h
++++ b/arch/mips/ath79/machtypes.h
+@@ -84,6 +84,7 @@ enum ath79_mach_type {
+ 	ATH79_MACH_TL_MR3220,		/* TP-LINK TL-MR3220 */
+ 	ATH79_MACH_TL_MR3220_V2,	/* TP-LINK TL-MR3220 v2 */
+ 	ATH79_MACH_TL_MR3420,		/* TP-LINK TL-MR3420 */
++	ATH79_MACH_TL_MR3420_V2,	/* TP-LINK TL-MR3420 v2 */
+ 	ATH79_MACH_TL_WA7510N_V1,	/* TP-LINK TL-WA7510N v1*/
+ 	ATH79_MACH_TL_WA901ND,		/* TP-LINK TL-WA901ND */
+ 	ATH79_MACH_TL_WA901ND_V2,	/* TP-LINK TL-WA901ND v2 */