ar71xx: Add eTactica EG-200 support

EG-200 is a DIN rail mountable device with one ethernet port, wifi,
an RS-485 port, and an internal USB attached uSD card reader.

Two leds, "modbus" and "etactica" are managed by userspace applications
in factory firmware.

Flash instruction:
    Original firmware is based on OpenWrt.
    Use sysupgrade image directly in vendor GUI.

Signed-off-by: Karl Palsson <karlp@etactica.com>

4 files changed, 111 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
index eda1e4002b..248bffb1f5 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -1325,6 +1325,16 @@ config ATH79_MACH_RE450
 	select ATH79_DEV_M25P80
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_RME_EG200
+	bool "eTactica EG200 board supprt"
+	select SOC_AR933X
+	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_RUT9XX
 	bool "Teltonika RUT900 series support"
 	select SOC_AR934X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 27ef57d167..98d4677a5f 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -179,6 +179,7 @@ obj-$(CONFIG_ATH79_MACH_RBSPI)			+= mach-rbspi.o
 obj-$(CONFIG_ATH79_MACH_RBSXTLITE)		+= mach-rbsxtlite.o
 obj-$(CONFIG_ATH79_MACH_RE355)			+= mach-re450.o
 obj-$(CONFIG_ATH79_MACH_RE450)			+= mach-re450.o
+obj-$(CONFIG_ATH79_MACH_RME_EG200)		+= mach-rme-eg200.o
 obj-$(CONFIG_ATH79_MACH_RUT9XX)			+= mach-rut9xx.o
 obj-$(CONFIG_ATH79_MACH_RW2458N)		+= mach-rw2458n.o
 obj-$(CONFIG_ATH79_MACH_SC1750)			+= mach-sc1750.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rme-eg200.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-rme-eg200.c
new file mode 100644
index 0000000000..332b0780d0
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rme-eg200.c
@@ -0,0 +1,99 @@
+/*
+ * eTactica EG-200 board, based on 8devices Carambola2 module
+ *
+ * Copyright (C) 2015 Karl Palsson <karlp@etactica.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 <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-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+#define RME_EG200_GPIO_LED_WLAN			0
+#define RME_EG200_GPIO_LED_ETH0			13
+#define RME_EG200_GPIO_LED_ETACTICA		15
+#define RME_EG200_GPIO_LED_MODBUS		16
+
+#define RME_EG200_GPIO_BTN_RESTORE		11
+
+#define RME_EG200_KEYS_POLL_INTERVAL		20	/* msecs */
+#define RME_EG200_KEYS_DEBOUNCE_INTERVAL	(3 * RME_EG200_KEYS_POLL_INTERVAL)
+
+#define RME_EG200_MAC0_OFFSET			0x0000
+#define RME_EG200_CALDATA_OFFSET		0x1000
+#define RME_EG200_WMAC_MAC_OFFSET		0x1002
+
+static struct gpio_led rme_eg200_leds_gpio[] __initdata = {
+	{
+		.name		= "eg200:red:wlan",
+		.gpio		= RME_EG200_GPIO_LED_WLAN,
+		.active_low	= 1,
+	}, {
+		.name		= "eg200:red:eth0",
+		.gpio		= RME_EG200_GPIO_LED_ETH0,
+		.active_low	= 1,
+	}, {
+		.name		= "eg200:red:etactica",
+		.gpio		= RME_EG200_GPIO_LED_ETACTICA,
+		.active_low	= 0,
+	}, {
+		.name		= "eg200:red:modbus",
+		.gpio		= RME_EG200_GPIO_LED_MODBUS,
+		.active_low	= 0,
+	}
+};
+
+static struct gpio_keys_button rme_eg200_keys[] __initdata = {
+	{
+		.desc		= "restore button",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = RME_EG200_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= RME_EG200_GPIO_BTN_RESTORE,
+		.active_low	= 1,
+	},
+};
+
+static void __init rme_eg200_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+
+	ath79_register_m25p80(NULL);
+	ath79_register_wmac(art + RME_EG200_CALDATA_OFFSET,
+			    art + RME_EG200_WMAC_MAC_OFFSET);
+
+	ath79_setup_ar933x_phy4_switch(true, true);
+
+	ath79_init_mac(ath79_eth0_data.mac_addr, art + RME_EG200_MAC0_OFFSET, 0);
+
+	ath79_register_mdio(0, 0x0);
+
+	/* WAN port */
+	ath79_register_eth(0);
+
+	ath79_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
+				AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
+				AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
+				AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
+				AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(rme_eg200_leds_gpio),
+				 rme_eg200_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, RME_EG200_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(rme_eg200_keys),
+					rme_eg200_keys);
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_RME_EG200, "RME-EG200", "eTactica EG-200",
+		rme_eg200_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 27269e54d6..497d794e01 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -209,6 +209,7 @@ enum ath79_mach_type {
 	ATH79_MACH_RB_SXTLITE5ND,		/* Mikrotik RouterBOARD SXT Lite 5nD */
 	ATH79_MACH_RE355,			/* TP-LINK RE355 */
 	ATH79_MACH_RE450,			/* TP-LINK RE450 */
+	ATH79_MACH_RME_EG200,			/* eTactica EG200 */
 	ATH79_MACH_RUT9XX,			/* Teltonika RUT900 series */
 	ATH79_MACH_RW2458N,			/* Redwave RW2458N */
 	ATH79_MACH_SC1750,			/* Abicom SC1750 */