/*
 *  NETGEAR WNR2000v4 board support
 *
 *  Copyright (C) 2015 Michael Bazzinotti <mbazzinotti@gmail.com>
 *  Copyright (C) 2014 Michaël Burtin <mburtin@gmail.com>
 *  Copyright (C) 2013 Mathieu Olivari <mathieu.olivari@gmail.com>
 *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 *  Copyright (C) 2008-2009 Andy Boyett <agb@openwrt.org>
 *
 *  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 <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-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"

/* AR9341 GPIOs */
#define WNR2000V4_GPIO_LED_PWR_GREEN      0
#define WNR2000V4_GPIO_LED_PWR_AMBER      1
#define WNR2000V4_GPIO_LED_WPS            2
#define WNR2000V4_GPIO_LED_WLAN           12
#define WNR2000V4_GPIO_LED_LAN1_GREEN     13
#define WNR2000V4_GPIO_LED_LAN2_GREEN     14
#define WNR2000V4_GPIO_LED_LAN3_GREEN     15
#define WNR2000V4_GPIO_LED_LAN4_GREEN     16
#define WNR2000V4_GPIO_LED_LAN1_AMBER     18
#define WNR2000V4_GPIO_LED_LAN2_AMBER     19
#define WNR2000V4_GPIO_LED_LAN3_AMBER     20
#define WNR2000V4_GPIO_LED_LAN4_AMBER     21
#define WNR2000V4_GPIO_LED_WAN_GREEN      17
#define WNR2000V4_GPIO_LED_WAN_AMBER      22
/* Buttons */
#define WNR2000V4_GPIO_BTN_WPS            3
#define WNR2000V4_GPIO_BTN_RESET          4
#define WNR2000V4_GPIO_BTN_WLAN           11
#define WNR2000V4_KEYS_POLL_INTERVAL      20      /* msecs */
#define WNR2000V4_KEYS_DEBOUNCE_INTERVAL  (3 * WNR2000V4_KEYS_POLL_INTERVAL)


/* ART offsets */
#define WNR2000V4_MAC0_OFFSET             0       /* WAN/WLAN0 MAC   */
#define WNR2000V4_MAC1_OFFSET             6       /* Eth-switch0 MAC */

static struct gpio_led wnr2000v4_leds_gpio[] __initdata = {
	{
		.name		= "netgear:green:power",
		.gpio		= WNR2000V4_GPIO_LED_PWR_GREEN,
		.active_low	= 1,
		.default_trigger = "default-on",
	},
	{
		.name		= "netgear:amber:status",
		.gpio		= WNR2000V4_GPIO_LED_PWR_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:green:wan",
		.gpio		= WNR2000V4_GPIO_LED_WAN_GREEN,
		.active_low	= 1,
	},
	{
		.name		= "netgear:amber:wan",
		.gpio		= WNR2000V4_GPIO_LED_WAN_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:blue:wlan",
		.gpio		= WNR2000V4_GPIO_LED_WLAN,
		.active_low	= 1,
	},
	/* LAN LEDS */
	{
		.name		= "netgear:green:lan1",
		.gpio		= WNR2000V4_GPIO_LED_LAN1_GREEN,
		.active_low	= 1,
	},
	{
		.name		= "netgear:green:lan2",
		.gpio		= WNR2000V4_GPIO_LED_LAN2_GREEN,
		.active_low	= 1,
	},
	{
		.name		= "netgear:green:lan3",
		.gpio		= WNR2000V4_GPIO_LED_LAN3_GREEN,
		.active_low	= 1,
	},
	{
		.name		= "netgear:green:lan4",
		.gpio		= WNR2000V4_GPIO_LED_LAN4_GREEN,
		.active_low	= 1,
	},
	{
		.name		= "netgear:amber:lan1",
		.gpio		= WNR2000V4_GPIO_LED_LAN1_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:amber:lan2",
		.gpio		= WNR2000V4_GPIO_LED_LAN2_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:amber:lan3",
		.gpio		= WNR2000V4_GPIO_LED_LAN3_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:amber:lan4",
		.gpio		= WNR2000V4_GPIO_LED_LAN4_AMBER,
		.active_low	= 1,
	},
	{
		.name		= "netgear:green:wps",
		.gpio		= WNR2000V4_GPIO_LED_WPS,
		.active_low	= 1,
	},
};

static struct gpio_keys_button wnr2000v4_gpio_keys[] __initdata = {
	{
		.desc		= "WPS button",
		.type		= EV_KEY,
		.code		= KEY_WPS_BUTTON,
		.debounce_interval = WNR2000V4_KEYS_DEBOUNCE_INTERVAL,
		.gpio		= WNR2000V4_GPIO_BTN_WPS,
		.active_low	= 1,
	},
	{
		.desc		= "Reset button",
		.type		= EV_KEY,
		.code		= KEY_RESTART,
		.debounce_interval = WNR2000V4_KEYS_DEBOUNCE_INTERVAL,
		.gpio		= WNR2000V4_GPIO_BTN_RESET,
		.active_low	= 1,
	},
	{
		.desc		= "WLAN button",
		.type		= EV_KEY,
		.code		= KEY_RFKILL,
		.debounce_interval = WNR2000V4_KEYS_DEBOUNCE_INTERVAL,
		.gpio		= WNR2000V4_GPIO_BTN_WLAN,
		.active_low	= 1,
	},
};

static void __init wnr_common_setup(void)
{
	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
	u8 *ee  = (u8 *) KSEG1ADDR(0x1fff1000);

	ath79_register_mdio(1, 0x0);

	ath79_register_usb();

	ath79_register_m25p80(NULL);

	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);

	ath79_init_mac(ath79_eth0_data.mac_addr, art+WNR2000V4_MAC0_OFFSET, 0);
	ath79_init_mac(ath79_eth1_data.mac_addr, art+WNR2000V4_MAC1_OFFSET, 0);

	/* GMAC0 is connected to the PHY0 of the internal switch, GE0 */
	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);

	/* GMAC1 is connected to the internal switch, GE1 */
	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
	ath79_register_eth(1);

	ath79_register_wmac(ee, art);
}

static void __init wnr2000v4_setup(void)
{
	int i;

	wnr_common_setup();

	/* Ensure no LED has an internal MUX signal, otherwise
	control of LED could be lost... This is especially important
	for most green LEDS (Eth,WAN).. who arrive in this function with
	MUX signals set. */
	for (i = 0; i < ARRAY_SIZE(wnr2000v4_leds_gpio); i++)
		ath79_gpio_output_select(wnr2000v4_leds_gpio[i].gpio,
					AR934X_GPIO_OUT_GPIO);

	ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr2000v4_leds_gpio),
				 wnr2000v4_leds_gpio);

	ath79_register_gpio_keys_polled(-1, WNR2000V4_KEYS_POLL_INTERVAL,
					ARRAY_SIZE(wnr2000v4_gpio_keys),
					wnr2000v4_gpio_keys);
}

MIPS_MACHINE(ATH79_MACH_WNR2000_V4, "WNR2000V4", "NETGEAR WNR2000 V4", wnr2000v4_setup);