ar71xx: support for D-LINK DIR-615 rev. E4

This patch adds support for D-LINK DIR-615 E4 board. It's mostly based
on the existing support for DIR-600 A1, with some changes in the leds
configuration.

It's an updated version of the patch that reliably works on my hw for
about a year (it was built from trunk on Jan 2011). When I decided to
update the firmware and checked for the current support for that device,
I also found previously posted patches by Alexey Loukianov that
mentioned some stability issues. I'm not sure where could be the
difference, the patches are very similar except the wmac led pin number
- I was using 1, and those patches used 17.

[juhosg: add 3.2 support]

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>

SVN-Revision: 29973

15 files changed, 428 insertions, 7 deletions

diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index f30ad05223..a3d5075a28 100755
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -57,6 +57,9 @@ get_status_led() {
 	dir-615-c1)
 		status_led="dir-615c1:green:status"
 		;;
+	dir-615-e4)
+		status_led="dir-615-e4:green:power"
+		;;
 	dir-825-b1)
 		status_led="dir825b1:orange:power"
 		;;
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/leds b/target/linux/ar71xx/base-files/etc/uci-defaults/leds
index d9613930d4..c33510af46 100755
--- a/target/linux/ar71xx/base-files/etc/uci-defaults/leds
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/leds
@@ -118,6 +118,14 @@ rb750)
 	set_led_switch "port5" "port5" "rb750:green:port5" "switch0" "0x02"
 	;;
 
+dir-615-e4)
+	set_led_netdev "wan" "WAN" "dir-615-e4:green:wan" "eth1"
+	set_led_switch "lan1" "LAN1" "dir-615-e4:green:lan1" "switch0" "0x02"
+	set_led_switch "lan2" "LAN2" "dir-615-e4:green:lan2" "switch0" "0x04"
+	set_led_switch "lan3" "LAN3" "dir-615-e4:green:lan3" "switch0" "0x08"
+	set_led_switch "lan4" "LAN4" "dir-615-e4:green:lan4" "switch0" "0x10"
+	;;
+
 dir-825-b1)
 	set_led_usbdev "usb" "USB" "dir825b1:blue:usb" "1-1"
 	;;
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/network b/target/linux/ar71xx/base-files/etc/uci-defaults/network
index ca99898183..613b2a0e87 100755
--- a/target/linux/ar71xx/base-files/etc/uci-defaults/network
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/network
@@ -137,6 +137,7 @@ ap96 |\
 airrouter |\
 dir-600-a1 |\
 dir-615-c1 |\
+dir-615-e4 |\
 ja76pf |\
 rb-750 |\
 tew-632brp |\
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index 9f117225f1..82b53f1617 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -166,6 +166,9 @@ ar71xx_board_detect() {
 	*"DIR-600 rev. A1")
 		name="dir-600-a1"
 		;;
+	*"DIR-615 rev. E4")
+		name="dir-615-e4"
+		;;
 	*"DIR-825 rev. B1")
 		name="dir-825-b1"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index 49df3c3966..3adfcd58b3 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -97,6 +97,7 @@ platform_check_image() {
 	ap83 | \
 	dir-600-a1 | \
 	dir-615-c1 | \
+	dir-615-e4 | \
 	dir-825-b1 | \
 	mzk-w04nu | \
 	mzk-w300nh | \
diff --git a/target/linux/ar71xx/config-2.6.39 b/target/linux/ar71xx/config-2.6.39
index 4f51b1a2b9..b8a91b50f3 100644
--- a/target/linux/ar71xx/config-2.6.39
+++ b/target/linux/ar71xx/config-2.6.39
@@ -25,6 +25,7 @@ CONFIG_AR71XX_MACH_AW_NR580=y
 CONFIG_AR71XX_MACH_DB120=y
 CONFIG_AR71XX_MACH_DIR_600_A1=y
 CONFIG_AR71XX_MACH_DIR_615_C1=y
+CONFIG_AR71XX_MACH_DIR_615_E4=y
 CONFIG_AR71XX_MACH_DIR_825_B1=y
 CONFIG_AR71XX_MACH_EAP7660D=y
 CONFIG_AR71XX_MACH_HORNET_UB=y
diff --git a/target/linux/ar71xx/config-3.2 b/target/linux/ar71xx/config-3.2
index 50fe18fd95..c3bcc763ff 100644
--- a/target/linux/ar71xx/config-3.2
+++ b/target/linux/ar71xx/config-3.2
@@ -34,6 +34,7 @@ CONFIG_ATH79_MACH_AW_NR580=y
 CONFIG_ATH79_MACH_DB120=y
 CONFIG_ATH79_MACH_DIR_600_A1=y
 CONFIG_ATH79_MACH_DIR_615_C1=y
+CONFIG_ATH79_MACH_DIR_615_E4=y
 CONFIG_ATH79_MACH_DIR_825_B1=y
 CONFIG_ATH79_MACH_EAP7660D=y
 CONFIG_ATH79_MACH_HORNET_UB=y
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Kconfig b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Kconfig
index 60db3ef415..14982b1953 100644
--- a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Kconfig
+++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Kconfig
@@ -104,6 +104,15 @@ config AR71XX_MACH_DIR_615_C1
 	select AR71XX_DEV_LEDS_GPIO
 	select AR71XX_NVRAM
 
+config AR71XX_MACH_DIR_615_E4
+	bool "D-Link DIR-615 rev. E4 support"
+	select SOC_AR724X
+	select AR71XX_DEV_AP91_PCI if PCI
+	select AR71XX_DEV_M25P80
+	select AR71XX_DEV_GPIO_BUTTONS
+	select AR71XX_DEV_LEDS_GPIO
+	select AR71XX_NVRAM
+
 config AR71XX_MACH_DIR_825_B1
 	bool "D-Link DIR-825 rev. B1 board support"
 	select SOC_AR71XX
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Makefile b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Makefile
index 22e32e5acc..546ff34cc3 100644
--- a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Makefile
+++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_AR71XX_MACH_AW_NR580)	+= mach-aw-nr580.o
 obj-$(CONFIG_AR71XX_MACH_DB120)		+= mach-db120.o
 obj-$(CONFIG_AR71XX_MACH_DIR_600_A1)	+= mach-dir-600-a1.o
 obj-$(CONFIG_AR71XX_MACH_DIR_615_C1)	+= mach-dir-615-c1.o
+obj-$(CONFIG_AR71XX_MACH_DIR_615_E4)	+= mach-dir-615-e4.o
 obj-$(CONFIG_AR71XX_MACH_DIR_825_B1)	+= mach-dir-825-b1.o
 obj-$(CONFIG_AR71XX_MACH_EAP7660D)	+= mach-eap7660d.o
 obj-$(CONFIG_AR71XX_MACH_JA76PF)	+= mach-ja76pf.o
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/mach-dir-615-e4.c b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/mach-dir-615-e4.c
new file mode 100644
index 0000000000..943929a59c
--- /dev/null
+++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/mach-dir-615-e4.c
@@ -0,0 +1,183 @@
+/*
+ *  D-Link DIR-615 rev. E4 board support
+ *
+ *  Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2012 Vadim Girlin <vadimgirlin@gmail.com>
+ *
+ *  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/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-ar71xx/ar71xx.h>
+
+#include "machtype.h"
+#include "devices.h"
+#include "dev-m25p80.h"
+#include "dev-ap91-pci.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "nvram.h"
+
+#define DIR_615_E4_GPIO_LED_WPS			0
+#define DIR_615_E4_GPIO_LED_POWER_AMBER		1
+#define DIR_615_E4_GPIO_LED_POWER_GREEN		6
+#define DIR_615_E4_GPIO_LED_WAN_AMBER		7
+#define DIR_615_E4_GPIO_LED_WAN_GREEN		17
+#define DIR_615_E4_GPIO_LED_LAN1_GREEN		13
+#define DIR_615_E4_GPIO_LED_LAN2_GREEN		14
+#define DIR_615_E4_GPIO_LED_LAN3_GREEN		15
+#define DIR_615_E4_GPIO_LED_LAN4_GREEN		16
+
+#define DIR_615_E4_GPIO_BTN_RESET		8
+#define DIR_615_E4_GPIO_BTN_WPS			12
+
+#define DIR_615_E4_KEYS_POLL_INTERVAL	20
+#define DIR_615_E4_KEYS_DEBOUNCE_INTERVAL (3 * DIR_615_E4_KEYS_POLL_INTERVAL)
+
+#define DIR_615_E4_NVRAM_ADDR	0x1f030000
+#define DIR_615_E4_NVRAM_SIZE	0x10000
+
+#ifdef CONFIG_MTD_PARTITIONS
+static struct mtd_partition dir_615_e4_partitions[] = {
+	{
+		.name		= "u-boot",
+		.offset		= 0,
+		.size		= 0x030000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "nvram",
+		.offset		= 0x030000,
+		.size		= 0x010000,
+	}, {
+		.name		= "kernel",
+		.offset		= 0x040000,
+		.size		= 0x0e0000,
+	}, {
+		.name		= "rootfs",
+		.offset		= 0x120000,
+		.size		= 0x2c0000,
+	}, {
+		.name		= "mac",
+		.offset		= 0x3e0000,
+		.size		= 0x010000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "art",
+		.offset		= 0x3f0000,
+		.size		= 0x010000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "firmware",
+		.offset		= 0x040000,
+		.size		= 0x3a0000,
+	}
+};
+#endif /* CONFIG_MTD_PARTITIONS */
+
+static struct flash_platform_data dir_615_e4_flash_data = {
+#ifdef CONFIG_MTD_PARTITIONS
+	.parts		= dir_615_e4_partitions,
+	.nr_parts	= ARRAY_SIZE(dir_615_e4_partitions),
+#endif
+};
+
+
+static struct gpio_led dir_615_e4_leds_gpio[] __initdata = {
+	{
+		.name		= "dir-615-e4:green:power",
+		.gpio		= DIR_615_E4_GPIO_LED_POWER_GREEN,
+	}, {
+		.name		= "dir-615-e4:amber:power",
+		.gpio		= DIR_615_E4_GPIO_LED_POWER_AMBER,
+	}, {
+		.name		= "dir-615-e4:green:wan",
+		.gpio		= DIR_615_E4_GPIO_LED_WAN_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:amber:wan",
+		.gpio		= DIR_615_E4_GPIO_LED_WAN_AMBER,
+	}, {
+		.name		= "dir-615-e4:green:lan1",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN1_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan2",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN2_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan3",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN3_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan4",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN4_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:blue:wps",
+		.gpio		= DIR_615_E4_GPIO_LED_WPS,
+		.active_low	= 1,
+	}
+};
+
+static struct gpio_keys_button dir_615_e4_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = DIR_615_E4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= DIR_615_E4_GPIO_BTN_RESET,
+		.active_low	= 1,
+	}, {
+		.desc		= "wps",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = DIR_615_E4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= DIR_615_E4_GPIO_BTN_WPS,
+		.active_low	= 1,
+	}
+};
+
+static void __init dir_615_e4_setup(void)
+{
+	const char *nvram = (char *) KSEG1ADDR(DIR_615_E4_NVRAM_ADDR);
+	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
+	u8 mac_buff[6];
+	u8 *mac = NULL;
+
+	if (nvram_parse_mac_addr(nvram, DIR_615_E4_NVRAM_SIZE,
+				"lan_mac=", mac_buff) == 0) {
+		ar71xx_init_mac(ar71xx_eth0_data.mac_addr, mac_buff, 0);
+		ar71xx_init_mac(ar71xx_eth1_data.mac_addr, mac_buff, 1);
+		mac = mac_buff;
+	}
+
+	ar71xx_add_device_m25p80(&dir_615_e4_flash_data);
+
+	ar71xx_add_device_leds_gpio(-1, ARRAY_SIZE(dir_615_e4_leds_gpio),
+					dir_615_e4_leds_gpio);
+
+	ar71xx_register_gpio_keys_polled(-1, DIR_615_E4_KEYS_POLL_INTERVAL,
+					 ARRAY_SIZE(dir_615_e4_gpio_keys),
+					 dir_615_e4_gpio_keys);
+
+	ar71xx_init_mac(ar71xx_eth0_data.mac_addr, mac, 0);
+	ar71xx_init_mac(ar71xx_eth1_data.mac_addr, mac, 1);
+
+	ar71xx_add_device_mdio(0, 0x0);
+
+	/* LAN ports */
+	ar71xx_add_device_eth(1);
+
+	/* WAN port */
+	ar71xx_add_device_eth(0);
+
+	ap91_pci_setup_wmac_led_pin(1);
+	ap91_pci_init(ee, mac);
+}
+
+MIPS_MACHINE(AR71XX_MACH_DIR_615_E4, "DIR-615-E4", "D-Link DIR-615 rev. E4",
+	     dir_615_e4_setup);
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/machtype.h b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/machtype.h
index 452055d78f..82fc944cb3 100644
--- a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/machtype.h
+++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/machtype.h
@@ -29,6 +29,7 @@ enum ar71xx_mach_type {
 	AR71XX_MACH_DB120,      /* Atheros DB120 (AR934x based) */
 	AR71XX_MACH_DIR_600_A1,	/* D-Link DIR-600 rev. A1 */
 	AR71XX_MACH_DIR_615_C1,	/* D-Link DIR-615 rev. C1 */
+	AR71XX_MACH_DIR_615_E4,	/* D-Link DIR-615 rev. E4 */
 	AR71XX_MACH_DIR_825_B1,	/* D-Link DIR-825 rev. B1 */
 	AR71XX_MACH_EAP7660D,	/* Senao EAP7660D */
 	AR71XX_MACH_JA76PF,	/* jjPlus JA76PF */
diff --git a/target/linux/ar71xx/files-3.2/arch/mips/ath79/mach-dir-615-e4.c b/target/linux/ar71xx/files-3.2/arch/mips/ath79/mach-dir-615-e4.c
new file mode 100644
index 0000000000..cce5dce795
--- /dev/null
+++ b/target/linux/ar71xx/files-3.2/arch/mips/ath79/mach-dir-615-e4.c
@@ -0,0 +1,179 @@
+/*
+ *  D-Link DIR-615 rev. E4 board support
+ *
+ *  Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2012 Vadim Girlin <vadimgirlin@gmail.com>
+ *
+ *  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/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-ath79/ath79.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 "machtypes.h"
+#include "nvram.h"
+
+#define DIR_615_E4_GPIO_LED_WPS			0
+#define DIR_615_E4_GPIO_LED_POWER_AMBER		1
+#define DIR_615_E4_GPIO_LED_POWER_GREEN		6
+#define DIR_615_E4_GPIO_LED_WAN_AMBER		7
+#define DIR_615_E4_GPIO_LED_WAN_GREEN		17
+#define DIR_615_E4_GPIO_LED_LAN1_GREEN		13
+#define DIR_615_E4_GPIO_LED_LAN2_GREEN		14
+#define DIR_615_E4_GPIO_LED_LAN3_GREEN		15
+#define DIR_615_E4_GPIO_LED_LAN4_GREEN		16
+
+#define DIR_615_E4_GPIO_BTN_RESET		8
+#define DIR_615_E4_GPIO_BTN_WPS			12
+
+#define DIR_615_E4_KEYS_POLL_INTERVAL	20
+#define DIR_615_E4_KEYS_DEBOUNCE_INTERVAL (3 * DIR_615_E4_KEYS_POLL_INTERVAL)
+
+#define DIR_615_E4_NVRAM_ADDR	0x1f030000
+#define DIR_615_E4_NVRAM_SIZE	0x10000
+
+static struct mtd_partition dir_615_e4_partitions[] = {
+	{
+		.name		= "u-boot",
+		.offset		= 0,
+		.size		= 0x030000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "nvram",
+		.offset		= 0x030000,
+		.size		= 0x010000,
+	}, {
+		.name		= "kernel",
+		.offset		= 0x040000,
+		.size		= 0x0e0000,
+	}, {
+		.name		= "rootfs",
+		.offset		= 0x120000,
+		.size		= 0x2c0000,
+	}, {
+		.name		= "mac",
+		.offset		= 0x3e0000,
+		.size		= 0x010000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "art",
+		.offset		= 0x3f0000,
+		.size		= 0x010000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "firmware",
+		.offset		= 0x040000,
+		.size		= 0x3a0000,
+	}
+};
+
+static struct flash_platform_data dir_615_e4_flash_data = {
+	.parts		= dir_615_e4_partitions,
+	.nr_parts	= ARRAY_SIZE(dir_615_e4_partitions),
+};
+
+
+static struct gpio_led dir_615_e4_leds_gpio[] __initdata = {
+	{
+		.name		= "dir-615-e4:green:power",
+		.gpio		= DIR_615_E4_GPIO_LED_POWER_GREEN,
+	}, {
+		.name		= "dir-615-e4:amber:power",
+		.gpio		= DIR_615_E4_GPIO_LED_POWER_AMBER,
+	}, {
+		.name		= "dir-615-e4:green:wan",
+		.gpio		= DIR_615_E4_GPIO_LED_WAN_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:amber:wan",
+		.gpio		= DIR_615_E4_GPIO_LED_WAN_AMBER,
+	}, {
+		.name		= "dir-615-e4:green:lan1",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN1_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan2",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN2_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan3",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN3_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:green:lan4",
+		.gpio		= DIR_615_E4_GPIO_LED_LAN4_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "dir-615-e4:blue:wps",
+		.gpio		= DIR_615_E4_GPIO_LED_WPS,
+		.active_low	= 1,
+	}
+};
+
+static struct gpio_keys_button dir_615_e4_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = DIR_615_E4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= DIR_615_E4_GPIO_BTN_RESET,
+		.active_low	= 1,
+	}, {
+		.desc		= "wps",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = DIR_615_E4_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= DIR_615_E4_GPIO_BTN_WPS,
+		.active_low	= 1,
+	}
+};
+
+static void __init dir_615_e4_setup(void)
+{
+	const char *nvram = (char *) KSEG1ADDR(DIR_615_E4_NVRAM_ADDR);
+	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
+	u8 mac_buff[6];
+	u8 *mac = NULL;
+
+	if (ath79_nvram_parse_mac_addr(nvram, DIR_615_E4_NVRAM_SIZE,
+				       "lan_mac=", mac_buff) == 0) {
+		ath79_init_mac(ath79_eth0_data.mac_addr, mac_buff, 0);
+		ath79_init_mac(ath79_eth1_data.mac_addr, mac_buff, 1);
+		mac = mac_buff;
+	}
+
+	ath79_register_m25p80(&dir_615_e4_flash_data);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(dir_615_e4_leds_gpio),
+				 dir_615_e4_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, DIR_615_E4_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(dir_615_e4_gpio_keys),
+					dir_615_e4_gpio_keys);
+
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac, 1);
+
+	ath79_register_mdio(0, 0x0);
+
+	/* LAN ports */
+	ath79_register_eth(1);
+
+	/* WAN port */
+	ath79_register_eth(0);
+
+	ap9x_pci_setup_wmac_led_pin(0, 1);
+	ap91_pci_init(ee, mac);
+}
+
+MIPS_MACHINE(ATH79_MACH_DIR_615_E4, "DIR-615-E4", "D-Link DIR-615 rev. E4",
+	     dir_615_e4_setup);
diff --git a/target/linux/ar71xx/generic/profiles/d-link.mk b/target/linux/ar71xx/generic/profiles/d-link.mk
index ec79ddecf4..3068c4f31a 100644
--- a/target/linux/ar71xx/generic/profiles/d-link.mk
+++ b/target/linux/ar71xx/generic/profiles/d-link.mk
@@ -29,6 +29,18 @@ endef
 $(eval $(call Profile,DIR615C1))
 
 
+define Profile/DIR615E4
+	NAME:=D-Link DIR-615 rev. E4
+	PACKAGES:=
+endef
+
+define Profile/DIR615E4/Description
+	Package set optimized for the D-Link DIR-615 rev. E4.
+endef
+
+$(eval $(call Profile,DIR615E4))
+
+
 define Profile/DIR825B1
 	NAME:=D-Link DIR-825 rev. B1
 	PACKAGES:=kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-ledtrig-usbdev
diff --git a/target/linux/ar71xx/image/Makefile b/target/linux/ar71xx/image/Makefile
index bd5e945f59..19e26ad2d6 100644
--- a/target/linux/ar71xx/image/Makefile
+++ b/target/linux/ar71xx/image/Makefile
@@ -698,6 +698,11 @@ define Image/Build/Profile/DIR600A1
 	$(call Image/Build/Template/$(fs_64k)/$(1),Cameo7240,dir-600-a1,$(dir600a1_cmdline),"AP91-AR7240-RT-090223-00")
 endef
 
+dir615e4_cmdline=board=DIR-615-E4 console=ttyS0,115200
+define Image/Build/Profile/DIR615E4
+	$(call Image/Build/Template/$(fs_64k)/$(1),Cameo7240,dir-615-e4,$(dir615e4_cmdline),"AP99-AR7240-RT-091105-05")
+endef
+
 eap7660d_cmdline=board=EAP7660D console=ttyS0,115200
 define Image/Build/Profile/EAP7660D
 	$(call Image/Build/Template/$(fs_128k)/$(1),PB4X,eap7660d,$(eap7660d_cmdline))
@@ -995,6 +1000,7 @@ define Image/Build/Profile/Default
 	$(call Image/Build/Profile/DB120,$(1))
 	$(call Image/Build/Profile/DIR600A1,$(1))
 	$(call Image/Build/Profile/DIR615C1,$(1))
+	$(call Image/Build/Profile/DIR615E4,$(1))
 	$(call Image/Build/Profile/DIR825B1,$(1))
 	$(call Image/Build/Profile/EAP7660D,$(1))
 	$(call Image/Build/Profile/FR54RTR,$(1))
diff --git a/target/linux/ar71xx/patches-3.2/610-MIPS-ath79-openwrt-machines.patch b/target/linux/ar71xx/patches-3.2/610-MIPS-ath79-openwrt-machines.patch
index d5204cb082..e6542a1741 100644
--- a/target/linux/ar71xx/patches-3.2/610-MIPS-ath79-openwrt-machines.patch
+++ b/target/linux/ar71xx/patches-3.2/610-MIPS-ath79-openwrt-machines.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/ath79/machtypes.h
 +++ b/arch/mips/ath79/machtypes.h
-@@ -16,17 +16,80 @@
+@@ -16,17 +16,81 @@
  
  enum ath79_mach_type {
  	ATH79_MACH_GENERIC = 0,
@@ -18,6 +18,7 @@
  	ATH79_MACH_PB44,		/* Atheros PB44 reference board */
 +	ATH79_MACH_DIR_600_A1,		/* D-Link DIR-600 rev. A1 */
 +	ATH79_MACH_DIR_615_C1,		/* D-Link DIR-615 rev. C1 */
++	ATH79_MACH_DIR_615_E4,		/* D-Link DIR-615 rev. E4 */
 +	ATH79_MACH_DIR_825_B1,		/* D-Link DIR-825 rev. B1 */
 +	ATH79_MACH_EAP7660D,		/* Senao EAP7660D */
 +	ATH79_MACH_JA76PF,		/* jjPlus JA76PF */
@@ -187,7 +188,7 @@
  config ATH79_MACH_PB44
  	bool "Atheros PB44 reference board"
  	select SOC_AR71XX
-@@ -54,6 +137,369 @@ config ATH79_MACH_PB44
+@@ -54,6 +137,379 @@ config ATH79_MACH_PB44
  	  Say 'Y' here if you want your kernel to support the
  	  Atheros PB44 reference board.
  
@@ -296,6 +297,16 @@
 +	select ATH79_DEV_WMAC
 +	select ATH79_NVRAM
 +
++config ATH79_MACH_DIR_615_E4
++	bool "D-Link DIR-615 rev. E4 support"
++	select SOC_AR724X
++	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_NVRAM
++
 +config ATH79_MACH_DIR_825_B1
 +	bool "D-Link DIR-825 rev. B1 board support"
 +	select SOC_AR71XX
@@ -557,7 +568,7 @@
  config ATH79_MACH_UBNT_XM
  	bool "Ubiquiti Networks XM (rev 1.0) board"
  	select SOC_AR724X
-@@ -67,6 +513,24 @@ config ATH79_MACH_UBNT_XM
+@@ -67,6 +523,24 @@ config ATH79_MACH_UBNT_XM
  	  Say 'Y' here if you want your kernel to support the
  	  Ubiquiti Networks XM (rev 1.0) board.
  
@@ -582,7 +593,7 @@
  endmenu
  
  config SOC_AR71XX
-@@ -96,10 +560,6 @@ config SOC_AR934X
+@@ -96,10 +570,6 @@ config SOC_AR934X
  	select PCI_AR724X if PCI
  	def_bool n
  
@@ -593,7 +604,7 @@
  config ATH79_DEV_AP9X_PCI
  	select ATH79_PCI_ATH9K_FIXUP
  	def_bool n
-@@ -110,7 +570,14 @@ config ATH79_DEV_DSA
+@@ -110,7 +580,14 @@ config ATH79_DEV_DSA
  config ATH79_DEV_ETH
  	def_bool n
  
@@ -609,7 +620,7 @@
  	def_bool n
  
  config ATH79_DEV_GPIO_BUTTONS
-@@ -135,4 +602,7 @@ config ATH79_NVRAM
+@@ -135,4 +612,7 @@ config ATH79_NVRAM
  config ATH79_PCI_ATH9K_FIXUP
  	def_bool n
  
@@ -619,7 +630,7 @@
  endif
 --- a/arch/mips/ath79/Makefile
 +++ b/arch/mips/ath79/Makefile
-@@ -36,8 +36,56 @@ obj-$(CONFIG_ATH79_PCI_ATH9K_FIXUP)	+= p
+@@ -36,8 +36,57 @@ obj-$(CONFIG_ATH79_PCI_ATH9K_FIXUP)	+= p
  #
  # Machines
  #
@@ -635,6 +646,7 @@
  obj-$(CONFIG_ATH79_MACH_DB120)		+= mach-db120.o
 +obj-$(CONFIG_ATH79_MACH_DIR_600_A1)	+= mach-dir-600-a1.o
 +obj-$(CONFIG_ATH79_MACH_DIR_615_C1)	+= mach-dir-615-c1.o
++obj-$(CONFIG_ATH79_MACH_DIR_615_E4)     += mach-dir-615-e4.o
 +obj-$(CONFIG_ATH79_MACH_DIR_825_B1)	+= mach-dir-825-b1.o
 +obj-$(CONFIG_ATH79_MACH_EAP7660D)	+= mach-eap7660d.o
 +obj-$(CONFIG_ATH79_MACH_JA76PF)		+= mach-ja76pf.o