ramips: rt305x: add kernel support for the Planex MZK-W300NH2 Router

This is a Japanese market router, for details check
http://www.planex.co.jp/product/router/mzk-w300nh2/. It has only 16MB
RAM, but base OpenWRT install worked fine for days without issues.
Even an image with built-in Luci worked, but don't expect smooth
experience, due to the lack of RAM. Wifi was not extensively tested,
but seems it is working. GPIO LEDs & buttons, factory flash image and
switch config are confirmed working. Tested against revision 34882 +
this patch.

[juhosg: move user-space support and image generation changes into
separate patches]

Signed-off-by: Samir Ibradžić <sibradzic@gmail.com>
Patchwork: http://patchwork.openwrt.org/patch/3077/
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34925

1 files changed, 94 insertions, 0 deletions

diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-mzk-w300nh2.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-mzk-w300nh2.c
new file mode 100644
index 0000000..53d5002
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-mzk-w300nh2.c
@@ -0,0 +1,94 @@
+/*
+ *  Planex MZK-W300NH2 board support
+ *
+ *  Copyright (C) 2012 Samir Ibradžić sibradzic@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/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ralink/machine.h>
+#include <asm/mach-ralink/dev-gpio-buttons.h>
+#include <asm/mach-ralink/dev-gpio-leds.h>
+#include <asm/mach-ralink/rt305x.h>
+#include <asm/mach-ralink/rt305x_regs.h>
+
+#include "devices.h"
+
+#define MZKW300NH2_GPIO_BUTTON_RESET     0	/* active low */
+#define MZKW300NH2_GPIO_BUTTON_WPS      12	/* active low */
+#define MZKW300NH2_GPIO_SWITCH_MODE_RT	13	/* active low */
+
+#define MZKW300NH2_GPIO_LED_POWER        9
+#define MZKW300NH2_GPIO_LED_WLAN        14
+#define MZKW300NH2_GPIO_LED_WPS         11
+
+#define MZKW300NH2_KEYS_POLL_INTERVAL   20
+#define MZKW300NH2_KEYS_DEBOUNCE_INTERVAL (3 * MZKW300NH2_KEYS_POLL_INTERVAL)
+
+static struct gpio_led mzkw300nh2_leds_gpio[] __initdata = {
+	{
+		.name		= "mzkw300nh2:green:power",
+		.gpio		= MZKW300NH2_GPIO_LED_POWER,
+		.active_low	= 1,
+	}, {
+		.name		= "mzkw300nh2:amber:wlan",
+		.gpio		= MZKW300NH2_GPIO_LED_WLAN,
+		.active_low	= 1,
+	}, {
+		.name		= "mzkw300nh2:amber:wps",
+		.gpio		= MZKW300NH2_GPIO_LED_WPS,
+		.active_low	= 1,
+	}
+};
+
+static struct gpio_keys_button mzkw300nh2_gpio_buttons[] __initdata = {
+	{
+		.desc		= "wps",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = MZKW300NH2_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= MZKW300NH2_GPIO_BUTTON_WPS,
+		.active_low	= 1,
+	}, {
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = MZKW300NH2_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= MZKW300NH2_GPIO_BUTTON_RESET,
+		.active_low	= 1,
+	}, {
+		.desc		= "rt",
+		.type		= EV_KEY,
+		.code		= BTN_0,
+		.debounce_interval = MZKW300NH2_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= MZKW300NH2_GPIO_SWITCH_MODE_RT,
+		.active_low	= 1,
+	}
+};
+
+static void __init mzkw300nh2_init(void)
+{
+	rt305x_gpio_init(RT305X_GPIO_MODE_UART0(RT305X_GPIO_MODE_GPIO) |
+			 RT305X_GPIO_MODE_I2C |
+			 RT305X_GPIO_MODE_SPI |
+			 RT305X_GPIO_MODE_JTAG);
+
+	rt305x_register_flash(0);
+	rt305x_esw_data.vlan_config = RT305X_ESW_VLAN_CONFIG_LLLLW;
+	rt305x_register_ethernet();
+	ramips_register_gpio_leds(-1, ARRAY_SIZE(mzkw300nh2_leds_gpio),
+				  mzkw300nh2_leds_gpio);
+	ramips_register_gpio_buttons(-1, MZKW300NH2_KEYS_POLL_INTERVAL,
+				     ARRAY_SIZE(mzkw300nh2_gpio_buttons),
+				     mzkw300nh2_gpio_buttons);
+	rt305x_register_wifi();
+	rt305x_register_wdt();
+}
+
+MIPS_MACHINE(RAMIPS_MACH_MZKW300NH2, "MZK-W300NH2", "Planex MZK-W300NH2",
+	      mzkw300nh2_init);