From: David Lutz <kpanic@hirnduenger.de>
Date: Sun, 11 Dec 2016 21:06:14 +0100
Subject: ar71xx-generic: add Support for TP-LINK TL-WR940N v4

Signed-off-by: David Lutz <kpanic@hirnduenger.de>

diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index 6b0caa676e6fc23be94c5eae77ae72e76f07fec3..67043d432cf7a469bf1ded14bc354274ab16e3e6 100644
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -296,6 +296,7 @@ get_status_led() {
 	tl-wr703n | \
 	tl-wr710n | \
 	tl-wr720n-v3 | \
+	tl-wr940n-v4 | \
 	tl-wr941nd-v6)
 		status_led="tp-link:blue:system"
 		;;
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/01_leds b/target/linux/ar71xx/base-files/etc/uci-defaults/01_leds
index 849755fb752c62a6fabf0ec609381b5d22991f1a..e47cbb0b01ef4a335c059a74af66d9f8999b3b3d 100644
--- a/target/linux/ar71xx/base-files/etc/uci-defaults/01_leds
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/01_leds
@@ -486,6 +486,7 @@ tl-wr941nd-v5)
 	ucidef_set_led_wlan "wlan" "WLAN" "tp-link:green:wlan" "phy0tpt"
 	;;
 
+tl-wr940n-v4 | \
 tl-wr941nd-v6)
 	ucidef_set_led_netdev "wan" "WAN" "tp-link:blue:wan" "eth0"
 	ucidef_set_led_switch "lan1" "LAN1" "tp-link:blue:lan1" "switch0" "0x10"
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/02_network b/target/linux/ar71xx/base-files/etc/uci-defaults/02_network
index 027a671215e5acd70cee06620c6648506ad6be47..878623ce3fd8b7c585da73c7bd72794a144096a3 100755
--- a/target/linux/ar71xx/base-files/etc/uci-defaults/02_network
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/02_network
@@ -229,6 +229,7 @@ tl-wr841n-v8 |\
 tl-wr842n-v2 |\
 tl-wr941nd-v5 |\
 tl-wr941nd-v6 |\
+tl-wr940n-v4 |\
 wnr2000-v3 |\
 wnr2000-v4 |\
 wnr2200 |\
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index 5e93ba628e4644eedbad98cf7a7766775a088f14..63f8dc630bf8c10c6b6224f934a86e922e0bcc43 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -235,6 +235,9 @@ tplink_board_detect() {
 	"090100"*)
 		model="TP-Link TL-WA901N/ND"
 		;;
+	"094000"*)
+		model="TP-Link TL-WR940N"
+		;;
 	"094100"*)
 		if [ "$hwid" = "09410002" -a "$mid" = "00420001" ]; then
 			model="Rosewill RNX-N360RT"
@@ -884,6 +887,9 @@ ar71xx_board_detect() {
 	*"TL-WR941N/ND v6")
 		name="tl-wr941nd-v6"
 		;;
+	*"TL-WR940N v4")
+		name="tl-wr940n-v4"
+		;;
 	*"TL-WR703N v1")
 		name="tl-wr703n"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/preinit/05_set_preinit_iface_ar71xx b/target/linux/ar71xx/base-files/lib/preinit/05_set_preinit_iface_ar71xx
index f552453e43363c5ab687116eee1889af8171dbb6..e5e4abd547f38ecda4a0cb67858df8f5d3477d59 100644
--- a/target/linux/ar71xx/base-files/lib/preinit/05_set_preinit_iface_ar71xx
+++ b/target/linux/ar71xx/base-files/lib/preinit/05_set_preinit_iface_ar71xx
@@ -36,6 +36,7 @@ set_preinit_iface() {
 	tl-wr841n-v8 |\
 	tl-wr842n-v2 |\
 	tl-wr941nd-v6 |\
+	tl-wr940n-v4 |\
 	wnr2000-v3 |\
 	wnr2200 |\
 	wnr612-v2 |\
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index ee2e596e1f5e462e544a919ca8ebca525e43cec9..76c252ccb14db970aac63ea1d2eaddca3d867867 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -373,6 +373,7 @@ platform_check_image() {
 	tl-wr941nd | \
 	tl-wr941nd-v5 | \
 	tl-wr941nd-v6 | \
+	tl-wr940n-v4 | \
 	tl-wr1041n-v2 | \
 	tl-wr1043nd | \
 	tl-wr1043nd-v2 | \
diff --git a/target/linux/ar71xx/config-3.18 b/target/linux/ar71xx/config-3.18
index d7cbe2e79af31a0ff88d946323e237f3215620a0..050362614a464b56d3740a7954686fe4e5b37803 100644
--- a/target/linux/ar71xx/config-3.18
+++ b/target/linux/ar71xx/config-3.18
@@ -141,6 +141,7 @@ CONFIG_ATH79_MACH_TL_WR841N_V8=y
 CONFIG_ATH79_MACH_TL_WR841N_V9=y
 CONFIG_ATH79_MACH_TL_WR941ND=y
 CONFIG_ATH79_MACH_TL_WR941ND_V6=y
+CONFIG_ATH79_MACH_TL_WR940N_V4=y
 CONFIG_ATH79_MACH_TUBE2H=y
 CONFIG_ATH79_MACH_UBNT=y
 CONFIG_ATH79_MACH_UBNT_UNIFIAC=y
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wr940n-v4.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wr940n-v4.c
new file mode 100644
index 0000000000000000000000000000000000000000..d693b947c843d2a74cd252503fa8bf68b20da4ab
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wr940n-v4.c
@@ -0,0 +1,149 @@
+/*
+ *  TP-LINK TL-WR940N v4 board support
+ *
+ *  Copyright (C) 2016 David Lutz <kpanic@ff3l.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/gpio.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+
+#define TL_WR940N_V4_GPIO_LED_QSS		3
+#define TL_WR940N_V4_GPIO_LED_WAN		14
+#define TL_WR940N_V4_GPIO_LED_WAN_RED		15
+#define TL_WR940N_V4_GPIO_LED_LAN4		4
+#define TL_WR940N_V4_GPIO_LED_LAN3		18
+#define TL_WR940N_V4_GPIO_LED_LAN2		6
+#define TL_WR940N_V4_GPIO_LED_LAN1		8
+#define TL_WR940N_V4_GPIO_LED_WLAN		7
+#define TL_WR940N_V4_GPIO_LED_SYSTEM		5
+
+#define TL_WR940N_V4_GPIO_BTN_RESET		1
+#define TL_WR940N_V4_GPIO_BTN_RFKILL		2
+
+#define TL_WR940N_V4_KEYS_POLL_INTERVAL	20
+#define TL_WR940N_V4_KEYS_DEBOUNCE_INTERVAL	(3 * TL_WR940N_V4_KEYS_POLL_INTERVAL)
+
+
+static struct gpio_led tl_wr940n_v4_leds_gpio[] __initdata = {
+	{
+		.name		= "tp-link:blue:qss",
+		.gpio		= TL_WR940N_V4_GPIO_LED_QSS,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:wan",
+		.gpio		= TL_WR940N_V4_GPIO_LED_WAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:red:wan",
+		.gpio		= TL_WR940N_V4_GPIO_LED_WAN_RED,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tp-link:blue:lan1",
+		.gpio		= TL_WR940N_V4_GPIO_LED_LAN1,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:lan2",
+		.gpio		= TL_WR940N_V4_GPIO_LED_LAN2,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:lan3",
+		.gpio		= TL_WR940N_V4_GPIO_LED_LAN3,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:lan4",
+		.gpio		= TL_WR940N_V4_GPIO_LED_LAN4,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:wlan",
+		.gpio		= TL_WR940N_V4_GPIO_LED_WLAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "tp-link:blue:system",
+		.gpio		= TL_WR940N_V4_GPIO_LED_SYSTEM,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button tl_wr940n_v4_gpio_keys[] __initdata = {
+	{
+		.desc		= "Reset button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = TL_WR940N_V4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_WR940N_V4_GPIO_BTN_RESET,
+		.active_low	= 1,
+	}, {
+		.desc		= "RFKILL button",
+		.type		= EV_KEY,
+		.code		= KEY_RFKILL,
+		.debounce_interval = TL_WR940N_V4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= TL_WR940N_V4_GPIO_BTN_RFKILL,
+		.active_low	= 1,
+	}
+};
+
+
+static const char *tl_wr940n_v4_part_probes[] = {
+	"tp-link",
+	NULL,
+};
+
+static struct flash_platform_data tl_wr940n_v4_flash_data = {
+	.part_probes	= tl_wr940n_v4_part_probes,
+};
+
+
+static void __init tl_wr940n_v4_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
+	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
+
+	ath79_register_m25p80(&tl_wr940n_v4_flash_data);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr940n_v4_leds_gpio),
+				 tl_wr940n_v4_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, TL_WR940N_V4_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(tl_wr940n_v4_gpio_keys),
+					tl_wr940n_v4_gpio_keys);
+
+	ath79_register_mdio(0, 0x0);
+
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 1);
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac, -1);
+
+	ath79_switch_data.phy4_mii_en = 1;
+
+	ath79_register_eth(0);
+	ath79_register_eth(1);
+
+	ath79_register_wmac(ee, mac);
+
+}
+
+MIPS_MACHINE(ATH79_MACH_TL_WR940N_V4, "TL-WR940N-v4", "TP-LINK TL-WR940N v4",
+	     tl_wr940n_v4_setup);
diff --git a/target/linux/ar71xx/image/Makefile b/target/linux/ar71xx/image/Makefile
index 6346eb9ffa6c9bbeb1eaa5de229cf69ce12c1f83..b35c713f3c92c3d02f26f4bf535aeec34fd71b12 100644
--- a/target/linux/ar71xx/image/Makefile
+++ b/target/linux/ar71xx/image/Makefile
@@ -650,6 +650,16 @@ define Device/tl-wr941nd-v6
     TPLINK_HWID := 0x09410006
 endef
 
+define Device/tl-wr940n-v4
+    $(Device/tplink-4mlzma)
+    BOARDNAME := TL-WR940N-v4
+    DEVICE_PROFILE := TLWR941
+    TPLINK_HWID := 0x09400004
+    IMAGES += factory-us.bin factory-eu.bin
+    IMAGE/factory-us.bin := append-rootfs | mktplinkfw factory -C US
+    IMAGE/factory-eu.bin := append-rootfs | mktplinkfw factory -C EU
+endef
+
 # Chinese version (unlike European) is similar to the TL-WDR3500
 define Device/tl-wr941nd-v6-cn
     $(Device/tplink-4mlzma)
@@ -657,7 +667,7 @@ define Device/tl-wr941nd-v6-cn
     DEVICE_PROFILE := TLWR941
     TPLINK_HWID := 0x09410006
 endef
-TARGET_DEVICES += tl-wr941nd-v5 tl-wr941nd-v6 tl-wr941nd-v6-cn
+TARGET_DEVICES += tl-wr941nd-v5 tl-wr941nd-v6 tl-wr941nd-v6-cn tl-wr940n-v4
 
 define Device/tl-wr1041n-v2
     $(Device/tplink-4mlzma)
diff --git a/target/linux/ar71xx/mikrotik/config-default b/target/linux/ar71xx/mikrotik/config-default
index 2b1fe2491c7a00449453efdc4969015ec1b28291..75155b22489a60748b3b1357a1d9c549092255ba 100644
--- a/target/linux/ar71xx/mikrotik/config-default
+++ b/target/linux/ar71xx/mikrotik/config-default
@@ -94,6 +94,7 @@ CONFIG_ATH79_MACH_RBSXTLITE=y
 # CONFIG_ATH79_MACH_TL_WR841N_V8 is not set
 # CONFIG_ATH79_MACH_TL_WR841N_V9 is not set
 # CONFIG_ATH79_MACH_TL_WR941ND is not set
+# CONFIG_ATH79_MACH_TL_WR940N_V4 is not set
 # CONFIG_ATH79_MACH_TUBE2H is not set
 # CONFIG_ATH79_MACH_UBNT is not set
 # CONFIG_ATH79_MACH_UBNT_XM is not set
diff --git a/target/linux/ar71xx/nand/config-default b/target/linux/ar71xx/nand/config-default
index f62cf1a4399718b2f4e94a974d26ddaf8d46a8ec..802d6e0502b51a4ecf2259c20e9b6667cd255680 100644
--- a/target/linux/ar71xx/nand/config-default
+++ b/target/linux/ar71xx/nand/config-default
@@ -57,6 +57,7 @@
 # CONFIG_ATH79_MACH_TL_WR841N_V1 is not set
 # CONFIG_ATH79_MACH_TL_WR841N_V8 is not set
 # CONFIG_ATH79_MACH_TL_WR941ND is not set
+# CONFIG_ATH79_MACH_TL_WR940N_V4 is not set
 # CONFIG_ATH79_MACH_UBNT is not set
 # CONFIG_ATH79_MACH_UBNT_XM is not set
 # CONFIG_ATH79_MACH_UBNT_UNIFIAC is not set
diff --git a/target/linux/ar71xx/patches-3.18/610-MIPS-ath79-openwrt-machines.patch b/target/linux/ar71xx/patches-3.18/610-MIPS-ath79-openwrt-machines.patch
index d23f0cf33e50da891e7135861f1defda047ff2c8..b7517464742679b66c3bd916b9b2a2fcc34b65e1 100644
--- a/target/linux/ar71xx/patches-3.18/610-MIPS-ath79-openwrt-machines.patch
+++ b/target/linux/ar71xx/patches-3.18/610-MIPS-ath79-openwrt-machines.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/ath79/machtypes.h
 +++ b/arch/mips/ath79/machtypes.h
-@@ -16,22 +16,205 @@
+@@ -16,22 +16,206 @@
  
  enum ath79_mach_type {
  	ATH79_MACH_GENERIC = 0,
@@ -154,6 +154,7 @@
 +	ATH79_MACH_TL_WR941ND,		/* TP-LINK TL-WR941ND */
 +	ATH79_MACH_TL_WR941ND_V5,	/* TP-LINK TL-WR941ND v5 */
 +	ATH79_MACH_TL_WR941ND_V6,	/* TP-LINK TL-WR941ND v6 */
++	ATH79_MACH_TL_WR940N_V4,	/* TP-LINK TL-WR940N v4 */
 +	ATH79_MACH_TUBE2H,		/* Alfa Network Tube2H */
 +	ATH79_MACH_UBNT_AIRGW,		/* Ubiquiti AirGateway */
  	ATH79_MACH_UBNT_AIRROUTER,	/* Ubiquiti AirRouter */
@@ -354,7 +355,7 @@
  config ATH79_MACH_PB44
  	bool "Atheros PB44 reference board"
  	select SOC_AR71XX
-@@ -68,6 +178,967 @@ config ATH79_MACH_PB44
+@@ -68,6 +178,976 @@ config ATH79_MACH_PB44
  	  Say 'Y' here if you want your kernel to support the
  	  Atheros PB44 reference board.
  
@@ -1229,6 +1230,15 @@
 +	select ATH79_DEV_M25P80
 +	select ATH79_DEV_WMAC
 +
++config ATH79_MACH_TL_WR940N_V4
++	bool "TP-LINK TL-WR940N v4 support"
++	select SOC_QCA956X
++	select ATH79_DEV_ETH
++	select ATH79_DEV_GPIO_BUTTONS
++	select ATH79_DEV_LEDS_GPIO
++	select ATH79_DEV_M25P80
++	select ATH79_DEV_WMAC
++
 +config ATH79_MACH_TL_WR1041N_V2
 +	bool "TP-LINK TL-WR1041N v2 support"
 +	select SOC_AR934X
@@ -1322,7 +1332,7 @@
  config ATH79_MACH_UBNT_XM
  	bool "Ubiquiti Networks XM/UniFi boards"
  	select SOC_AR724X
-@@ -83,6 +1154,117 @@ config ATH79_MACH_UBNT_XM
+@@ -83,6 +1163,117 @@ config ATH79_MACH_UBNT_XM
  	  Say 'Y' here if you want your kernel to support the
  	  Ubiquiti Networks XM (rev 1.0) board.
  
@@ -1440,7 +1450,7 @@
  endmenu
  
  config SOC_AR71XX
-@@ -124,7 +1306,10 @@ config ATH79_DEV_DSA
+@@ -124,7 +1315,10 @@ config ATH79_DEV_DSA
  config ATH79_DEV_ETH
  	def_bool n
  
@@ -1452,7 +1462,7 @@
  	def_bool n
  
  config ATH79_DEV_GPIO_BUTTONS
-@@ -154,6 +1339,11 @@ config ATH79_PCI_ATH9K_FIXUP
+@@ -154,6 +1348,11 @@ config ATH79_PCI_ATH9K_FIXUP
  	def_bool n
  
  config ATH79_ROUTERBOOT
@@ -1466,7 +1476,7 @@
  endif
 --- a/arch/mips/ath79/Makefile
 +++ b/arch/mips/ath79/Makefile
-@@ -38,9 +38,130 @@ obj-$(CONFIG_ATH79_ROUTERBOOT)		+= route
+@@ -38,9 +47,131 @@ obj-$(CONFIG_ATH79_ROUTERBOOT)		+= route
  #
  # Machines
  #
@@ -1561,6 +1571,7 @@
 +obj-$(CONFIG_ATH79_MACH_TL_WR841N_V9)	+= mach-tl-wr841n-v9.o
 +obj-$(CONFIG_ATH79_MACH_TL_WR941ND)	+= mach-tl-wr941nd.o
 +obj-$(CONFIG_ATH79_MACH_TL_WR941ND_V6)	+= mach-tl-wr941nd-v6.o
++obj-$(CONFIG_ATH79_MACH_TL_WR940N_V4)	+= mach-tl-wr940n-v4.o
 +obj-$(CONFIG_ATH79_MACH_TL_WR1041N_V2)	+= mach-tl-wr1041n-v2.o
 +obj-$(CONFIG_ATH79_MACH_TL_WR1043ND)	+= mach-tl-wr1043nd.o
 +obj-$(CONFIG_ATH79_MACH_TL_WR1043ND_V2)	+= mach-tl-wr1043nd-v2.o