ar71xx: add kernel support for the TL-WDR3500 board

WDR3500 is similar to WDR3600 except it doesn't have gigabit ethernet,
and has only 1 USB port.

Pending issues:

  * Leds are not working at all (except power and wlan_5g)
  * LAN switch ethernet ports are reversed with respect to case label.

  [Label] -> soft device
  [LAN1] -> eth0.4
  [LAN2] -> eth0.3
  [LAN3] -> eth0.2
  [LAN4] -> eth0.1

Based on http://patchwork.openwrt.org/patch/3208/

Thanks-to: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 35423

3 files changed, 194 insertions, 0 deletions

diff --git a/target/linux/ar71xx/config-3.7 b/target/linux/ar71xx/config-3.7
index 11498c5859..749b3df83d 100644
--- a/target/linux/ar71xx/config-3.7
+++ b/target/linux/ar71xx/config-3.7
@@ -65,6 +65,7 @@ CONFIG_ATH79_MACH_TL_MR3020=y
 CONFIG_ATH79_MACH_TL_MR3X20=y
 CONFIG_ATH79_MACH_TL_WA901ND=y
 CONFIG_ATH79_MACH_TL_WA901ND_V2=y
+CONFIG_ATH79_MACH_TL_WDR3500=y
 CONFIG_ATH79_MACH_TL_WDR4300=y
 CONFIG_ATH79_MACH_TL_WR1041N_V2=y
 CONFIG_ATH79_MACH_TL_WR1043ND=y
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wdr3500.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wdr3500.c
new file mode 100644
index 0000000000..05fe83d4a7
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wdr3500.c
@@ -0,0 +1,153 @@
+/*
+ *  TP-LINK TL-WDR3500 board support
+ *
+ *  Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2013 Gui Iribarren <gui@altermundi.net>
+ *
+ *  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/pci.h>
+#include <linux/phy.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/ath9k_platform.h>
+#include <linux/ar8216_platform.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "dev-ap9x-pci.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-spi.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+#define WDR3500_GPIO_LED_USB1		11
+#define WDR3500_GPIO_LED_WLAN2G		13
+#define WDR3500_GPIO_LED_SYSTEM		14
+#define WDR3500_GPIO_LED_QSS		15
+
+#define WDR3500_GPIO_BTN_WPS		16
+#define WDR3500_GPIO_BTN_RFKILL		17
+
+#define WDR3500_GPIO_USB1_POWER		22
+
+#define WDR3500_KEYS_POLL_INTERVAL	20	/* msecs */
+#define WDR3500_KEYS_DEBOUNCE_INTERVAL	(3 * WDR3500_KEYS_POLL_INTERVAL)
+
+#define WDR3500_MAC0_OFFSET		0
+#define WDR3500_MAC1_OFFSET		6
+#define WDR3500_WMAC_CALDATA_OFFSET	0x1000
+#define WDR3500_PCIE_CALDATA_OFFSET	0x5000
+
+static const char *wdr3500_part_probes[] = {
+	"tp-link",
+	NULL,
+};
+
+static struct flash_platform_data wdr3500_flash_data = {
+	.part_probes	= wdr3500_part_probes,
+};
+
+static struct gpio_led wdr3500_leds_gpio[] __initdata = {
+	{
+		.name		= "tp-link:green:qss",
+		.gpio		= WDR3500_GPIO_LED_QSS,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:green:system",
+		.gpio		= WDR3500_GPIO_LED_SYSTEM,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:green:usb1",
+		.gpio		= WDR3500_GPIO_LED_USB1,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:green:wlan2g",
+		.gpio		= WDR3500_GPIO_LED_WLAN2G,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button wdr3500_gpio_keys[] __initdata = {
+	{
+		.desc		= "QSS button",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = WDR3500_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= WDR3500_GPIO_BTN_WPS,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "RFKILL switch",
+		.type		= EV_SW,
+		.code		= KEY_RFKILL,
+		.debounce_interval = WDR3500_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= WDR3500_GPIO_BTN_RFKILL,
+	},
+};
+
+
+static void __init wdr3500_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+	u8 tmpmac[ETH_ALEN];
+
+	ath79_register_m25p80(&wdr3500_flash_data);
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(wdr3500_leds_gpio),
+				 wdr3500_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, WDR3500_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(wdr3500_gpio_keys),
+					wdr3500_gpio_keys);
+
+	ath79_init_mac(tmpmac, mac, 0);
+	ath79_register_wmac(art + WDR3500_WMAC_CALDATA_OFFSET, tmpmac);
+
+	ath79_init_mac(tmpmac, mac, 1);
+	ap9x_pci_setup_wmac_led_pin(0, 0);
+	ap91_pci_init(art + WDR3500_PCIE_CALDATA_OFFSET, tmpmac);
+
+	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
+
+	ath79_register_mdio(1, 0x0);
+
+	/* LAN */
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac, -1);
+
+	/* GMAC1 is connected to the internal switch */
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+
+	ath79_register_eth(1);
+
+	/* WAN */
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 2);
+
+	/* GMAC0 is connected to the PHY4 of the internal switch */
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_switch_data.phy_poll_mask = BIT(4);
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio1_device.dev;
+
+	ath79_register_eth(0);
+
+	gpio_request_one(WDR3500_GPIO_USB1_POWER,
+			 GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+			 "USB1 power");
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_TL_WDR3500, "TL-WDR3500",
+	     "TP-LINK TL-WDR3500",
+	     wdr3500_setup);
diff --git a/target/linux/ar71xx/patches-3.7/613-MIPS-ath79-add-TL-WDR3500-support.patch b/target/linux/ar71xx/patches-3.7/613-MIPS-ath79-add-TL-WDR3500-support.patch
new file mode 100644
index 0000000000..0a2c3bda51
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.7/613-MIPS-ath79-add-TL-WDR3500-support.patch
@@ -0,0 +1,40 @@
+--- a/arch/mips/ath79/machtypes.h
++++ b/arch/mips/ath79/machtypes.h
+@@ -84,6 +84,7 @@ enum ath79_mach_type {
+ 	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 */
++	ATH79_MACH_TL_WDR3500,		/* TP-LINK TL-WDR3500 */
+ 	ATH79_MACH_TL_WDR4300,		/* TP-LINK TL-WDR4300 */
+ 	ATH79_MACH_TL_WR1041N_V2,	/* TP-LINK TL-WR1041N v2 */
+ 	ATH79_MACH_TL_WR1043ND,		/* TP-LINK TL-WR1043ND */
+--- a/arch/mips/ath79/Kconfig
++++ b/arch/mips/ath79/Kconfig
+@@ -514,6 +514,17 @@ config ATH79_MACH_TL_WA901ND_V2
+ 	select ATH79_DEV_M25P80
+ 	select ATH79_DEV_WMAC
+ 
++config ATH79_MACH_TL_WDR3500
++	bool "TP-LINK TL-WDR3500 board support"
++	select SOC_AR934X
++	select ATH79_DEV_AP9X_PCI if PCI
++	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_WDR4300
+ 	bool "TP-LINK TL-WDR3600/4300/4310 board support"
+ 	select SOC_AR934X
+--- a/arch/mips/ath79/Makefile
++++ b/arch/mips/ath79/Makefile
+@@ -81,6 +81,7 @@ obj-$(CONFIG_ATH79_MACH_TL_MR3020)	+= ma
+ obj-$(CONFIG_ATH79_MACH_TL_MR3X20)	+= mach-tl-mr3x20.o
+ obj-$(CONFIG_ATH79_MACH_TL_WA901ND)	+= mach-tl-wa901nd.o
+ obj-$(CONFIG_ATH79_MACH_TL_WA901ND_V2)	+= mach-tl-wa901nd-v2.o
++obj-$(CONFIG_ATH79_MACH_TL_WDR3500)     += mach-tl-wdr3500.o
+ obj-$(CONFIG_ATH79_MACH_TL_WDR4300)     += mach-tl-wdr4300.o
+ obj-$(CONFIG_ATH79_MACH_TL_WR741ND)	+= mach-tl-wr741nd.o
+ obj-$(CONFIG_ATH79_MACH_TL_WR741ND_V4)	+= mach-tl-wr741nd-v4.o