ar71xx: add support for TP-Link TL-MR3020

This patch adds support for the TP-Link device TL-MR3020 which is very
similiar to the TL-WR703N.
The TL-MR3020 uses 5 LEDs, 1 push button and a switch with 3 positions.
Only four LEDs can be controlled via GPIO. The power LED is connected to
the power supply.
The WPS push button has been mapped to KEY_WPS_BUTTON. The two GPIO signals
of the sliding switch have been mapped to BTN_0 and BTN_1.

I have also setup a wiki page with details here:
http://wiki.openwrt.org/toh/tp-link/tl-mr3020

USB is working and has been tested with USB mass storage and USB UMTS
stick.

Wifi also seems to work.

Ethernet is working too.

Signed-off-by: Christian Cier-Zniewski <c.cier@gmx.de>

SVN-Revision: 29651

4 files changed, 133 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig b/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
index c2ccf8121e..90c7b69a6d 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
@@ -277,6 +277,15 @@ config AR71XX_MACH_NBG460N
 	select AR71XX_DEV_GPIO_BUTTONS
 	select AR71XX_DEV_LEDS_GPIO
 
+config AR71XX_MACH_TL_MR3020
+	bool "TP-LINK TL-MR3020 support"
+	select SOC_AR933X
+	select AR71XX_DEV_M25P80
+	select AR71XX_DEV_GPIO_BUTTONS
+	select AR71XX_DEV_LEDS_GPIO
+	select AR71XX_DEV_USB
+	select AR71XX_DEV_AR9XXX_WMAC
+
 config AR71XX_MACH_TL_MR3X20
 	bool "TP-LINK TL-MR3220/3420 support"
 	select SOC_AR724X
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile b/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
index 9d086811f5..0cb277e828 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_AR71XX_MACH_PB92)		+= mach-pb92.o
 obj-$(CONFIG_AR71XX_MACH_RB4XX)		+= mach-rb4xx.o
 obj-$(CONFIG_AR71XX_MACH_RB750)		+= mach-rb750.o
 obj-$(CONFIG_AR71XX_MACH_TEW_632BRP)	+= mach-tew-632brp.o
+obj-$(CONFIG_AR71XX_MACH_TL_MR3020)	+= mach-tl-mr3020.o
 obj-$(CONFIG_AR71XX_MACH_TL_MR3X20)	+= mach-tl-mr3x20.o
 obj-$(CONFIG_AR71XX_MACH_TL_WA901ND)	+= mach-tl-wa901nd.o
 obj-$(CONFIG_AR71XX_MACH_TL_WA901ND_V2)	+= mach-tl-wa901nd-v2.o
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tl-mr3020.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tl-mr3020.c
new file mode 100644
index 0000000000..6af58d1a5f
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tl-mr3020.c
@@ -0,0 +1,122 @@
+/*
+ *  TP-LINK TL-MR3020 board support
+ *
+ *  Copyright (C) 2011 dongyuqi <729650915@qq.com>
+ *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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/gpio.h>
+
+#include <asm/mach-ar71xx/ar71xx.h>
+
+#include "machtype.h"
+#include "devices.h"
+#include "dev-ar9xxx-wmac.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-usb.h"
+
+#define TL_MR3020_GPIO_LED_3G		27
+#define TL_MR3020_GPIO_LED_WLAN		0
+#define TL_MR3020_GPIO_LED_LAN		17
+#define TL_MR3020_GPIO_LED_WPS		26
+
+#define TL_MR3020_GPIO_BTN_WPS		11
+#define TL_MR3020_GPIO_BTN_SW1		18
+#define TL_MR3020_GPIO_BTN_SW2		20
+
+#define TL_MR3020_GPIO_USB_POWER	8
+
+#define TL_MR3020_KEYS_POLL_INTERVAL	20	/* msecs */
+#define TL_MR3020_KEYS_DEBOUNCE_INTERVAL	(3 * TL_MR3020_KEYS_POLL_INTERVAL)
+
+static const char *tl_mr3020_part_probes[] = {
+	"tp-link",
+	NULL,
+};
+
+static struct flash_platform_data tl_mr3020_flash_data = {
+	.part_probes	= tl_mr3020_part_probes,
+};
+
+static struct gpio_led tl_mr3020_leds_gpio[] __initdata = {
+	{
+		.name		= "tp-link:green:3g",
+		.gpio		= TL_MR3020_GPIO_LED_3G,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:green:wlan",
+		.gpio		= TL_MR3020_GPIO_LED_WLAN,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tp-link:green:lan",
+		.gpio		= TL_MR3020_GPIO_LED_LAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:green:wps",
+		.gpio		= TL_MR3020_GPIO_LED_WPS,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button tl_mr3020_gpio_keys[] __initdata = {
+	{
+		.desc		= "wps",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = TL_MR3020_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR3020_GPIO_BTN_WPS,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "sw1",
+		.type		= EV_KEY,
+		.code		= BTN_0,
+		.debounce_interval = TL_MR3020_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR3020_GPIO_BTN_SW1,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "sw2",
+		.type		= EV_KEY,
+		.code		= BTN_1,
+		.debounce_interval = TL_MR3020_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_MR3020_GPIO_BTN_SW2,
+		.active_low	= 1,
+	}
+};
+
+static void __init tl_mr3020_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
+	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
+
+	ar71xx_add_device_m25p80(&tl_mr3020_flash_data);
+	ar71xx_add_device_leds_gpio(-1, ARRAY_SIZE(tl_mr3020_leds_gpio),
+					tl_mr3020_leds_gpio);
+	ar71xx_register_gpio_keys_polled(-1, TL_MR3020_KEYS_POLL_INTERVAL,
+					 ARRAY_SIZE(tl_mr3020_gpio_keys),
+					 tl_mr3020_gpio_keys);
+
+	gpio_request(TL_MR3020_GPIO_USB_POWER, "USB power");
+	gpio_direction_output(TL_MR3020_GPIO_USB_POWER, 1);
+	ar71xx_add_device_usb();
+
+	ar71xx_init_mac(ar71xx_eth0_data.mac_addr, mac, 0);
+
+	ar71xx_add_device_mdio(0, 0x0);
+	ar71xx_add_device_eth(0);
+
+	ar9xxx_add_device_wmac(ee, mac);
+}
+
+MIPS_MACHINE(AR71XX_MACH_TL_MR3020, "TL-MR3020", "TP-LINK TL-MR3020 v1",
+	     tl_mr3020_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/machtype.h b/target/linux/ar71xx/files/arch/mips/ar71xx/machtype.h
index cac9d55f77..9d363a6acc 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/machtype.h
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/machtype.h
@@ -49,6 +49,7 @@ enum ar71xx_mach_type {
 	AR71XX_MACH_RB_493G,	/* Mikrotik RouterBOARD 493G */
 	AR71XX_MACH_RB_750,	/* MikroTik RouterBOARD 750 */
 	AR71XX_MACH_TEW_632BRP,	/* TRENDnet TEW-632BRP */
+	AR71XX_MACH_TL_MR3020,  /* TP-LINK TL-MR3020 */
 	AR71XX_MACH_TL_MR3220,	/* TP-LINK TL-MR3220 */
 	AR71XX_MACH_TL_MR3420,	/* TP-LINK TL-MR3420 */
 	AR71XX_MACH_TL_WA901ND,	/* TP-LINK TL-WA901ND */