ar71xx: improve kernel support for the TL-MR3040 v2

This patch adds support for the hardware slide switch on
the TL-MR3040 v2.

Signed-off-by: Mads Hansen <d@taba.se>
[juhosg: use EV_SW instead of EV_KEY]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 38190

target/linux/ar71xx/files/arch/mips/ath79/mach-tl-mr11u.c

@@ -33,6 +33,9 @@
 #define TL_MR11U_GPIO_USB_POWER		8
 #define TL_MR3040_GPIO_USB_POWER	18
 
+#define TL_MR3040_V2_GPIO_BTN_SW1	19
+#define TL_MR3040_V2_GPIO_BTN_SW2	20
+
 #define TL_MR11U_KEYS_POLL_INTERVAL	20	/* msecs */
 #define TL_MR11U_KEYS_DEBOUNCE_INTERVAL	(3 * TL_MR11U_KEYS_POLL_INTERVAL)
 
@@ -82,6 +85,33 @@ static struct gpio_keys_button tl_mr11u_gpio_keys[] __initdata = {
 	},
 };
 
+static struct gpio_keys_button tl_mr3040_v2_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = TL_MR11U_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR11U_GPIO_BTN_RESET,
+		.active_low	= 0,
+	},
+	{
+		.desc		= "sw1",
+		.type		= EV_SW,
+		.code		= BTN_0,
+		.debounce_interval = TL_MR11U_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR3040_V2_GPIO_BTN_SW1,
+		.active_low	= 0,
+	},
+	{
+		.desc		= "sw2",
+		.type		= EV_SW,
+		.code		= BTN_1,
+		.debounce_interval = TL_MR11U_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR3040_V2_GPIO_BTN_SW2,
+		.active_low	= 0,
+	}
+};
+
 static void __init common_setup(void)
 {
 	u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
@@ -136,3 +166,18 @@ static void __init tl_mr3040_setup(void)
 
 MIPS_MACHINE(ATH79_MACH_TL_MR3040, "TL-MR3040", "TP-LINK TL-MR3040",
 	     tl_mr3040_setup);
+
+static void __init tl_mr3040_v2_setup(void)
+{
+	common_setup();
+
+	ath79_register_gpio_keys_polled(-1, TL_MR11U_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(tl_mr3040_v2_gpio_keys),
+					tl_mr3040_v2_gpio_keys);
+	gpio_request_one(TL_MR3040_GPIO_USB_POWER,
+			 GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+			 "USB power");
+}
+
+MIPS_MACHINE(ATH79_MACH_TL_MR3040_V2, "TL-MR3040-v2", "TP-LINK TL-MR3040 v2",
+	     tl_mr3040_v2_setup);

target/linux/ar71xx/patches-3.10/628-MIPS-ath79-add-TL-MR3040-v2-support.patch

@@ -0,0 +1,10 @@
+--- a/arch/mips/ath79/machtypes.h
++++ b/arch/mips/ath79/machtypes.h
+@@ -89,6 +89,7 @@ enum ath79_mach_type {
+ 	ATH79_MACH_TL_MR13U,		/* TP-LINK TL-MR13U */
+ 	ATH79_MACH_TL_MR3020,		/* TP-LINK TL-MR3020 */
+ 	ATH79_MACH_TL_MR3040,		/* TP-LINK TL-MR3040 */
++	ATH79_MACH_TL_MR3040_V2,	/* TP-LINK TL-MR3040 v2 */
+ 	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 */