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/*
 *  TP-LINK TL-WA830RE v2 board support
 *
 *  Copyright (C) 2014 Fredrik Jonson <fredrik@famjonson.se>
 *
 *  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-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"

#define TL_WA830REV2_GPIO_LED_WLAN      13
#define TL_WA830REV2_GPIO_LED_QSS       15
#define TL_WA830REV2_GPIO_LED_LAN       18
#define TL_WA830REV2_GPIO_LED_SYSTEM    14

#define TL_WA830REV2_GPIO_BTN_RESET     17
#define TL_WA830REV2_GPIO_SW_RFKILL     16      /* WPS for MR3420 v2 */

#define TL_WA830REV2_GPIO_USB_POWER     4

#define TL_WA830REV2_KEYS_POLL_INTERVAL 20      /* msecs */
#define TL_WA830REV2_KEYS_DEBOUNCE_INTERVAL (3 * TL_WA830REV2_KEYS_POLL_INTERVAL)

static const char *tl_wa830re_v2_part_probes[] = {
        "tp-link",
        NULL,
};

static struct flash_platform_data tl_wa830re_v2_flash_data = {
        .part_probes    = tl_wa830re_v2_part_probes,
};

static struct gpio_led tl_wa830re_v2_leds_gpio[] __initdata = {
        {
                .name           = "tp-link:green:qss",
                .gpio           = TL_WA830REV2_GPIO_LED_QSS,
                .active_low     = 1,
        }, {
                .name           = "tp-link:green:system",
                .gpio           = TL_WA830REV2_GPIO_LED_SYSTEM,
                .active_low     = 1,
        }, {
                .name           = "tp-link:green:lan",
                .gpio           = TL_WA830REV2_GPIO_LED_LAN,
                .active_low     = 1,
        }, {
                .name           = "tp-link:green:wlan",
                .gpio           = TL_WA830REV2_GPIO_LED_WLAN,
                .active_low     = 1,
        },
};

static struct gpio_keys_button tl_wa830re_v2_gpio_keys[] __initdata = {
        {
                .desc           = "Reset button",
                .type           = EV_KEY,
                .code           = KEY_RESTART,
                .debounce_interval = TL_WA830REV2_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TL_WA830REV2_GPIO_BTN_RESET,
                .active_low     = 1,
        }, {
                .desc           = "RFKILL switch",
                .type           = EV_SW,
                .code           = KEY_RFKILL,
                .debounce_interval = TL_WA830REV2_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TL_WA830REV2_GPIO_SW_RFKILL,
                .active_low     = 0,
        }
};

static void __init tl_ap123_setup(void)
{
        u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
        u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);

        /* Disable JTAG, enabling GPIOs 0-3 */
        /* Configure OBS4 line, for GPIO 4*/
        ath79_gpio_function_setup(AR934X_GPIO_FUNC_JTAG_DISABLE,
                                 AR934X_GPIO_FUNC_CLK_OBS4_EN);

        /* config gpio4 as normal gpio function */
        ath79_gpio_output_select(TL_WA830REV2_GPIO_USB_POWER,
                                 AR934X_GPIO_OUT_GPIO);

        ath79_register_m25p80(&tl_wa830re_v2_flash_data);

        ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_PHY_SWAP);

        ath79_register_mdio(1, 0x0);

        ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);

        /* GMAC0 is connected to the PHY0 of the internal switch */
        ath79_switch_data.phy4_mii_en = 1;
        ath79_switch_data.phy_poll_mask = BIT(0);
        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
        ath79_eth0_data.phy_mask = BIT(0);
        ath79_eth0_data.mii_bus_dev = &ath79_mdio1_device.dev;
        ath79_register_eth(0);

        ath79_register_wmac(ee, mac);
}

static void __init tl_wa830re_v2_setup(void)
{
        tl_ap123_setup();

        ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wa830re_v2_leds_gpio) - 1,
                                 tl_wa830re_v2_leds_gpio);

        ath79_register_gpio_keys_polled(1, TL_WA830REV2_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(tl_wa830re_v2_gpio_keys),
                                        tl_wa830re_v2_gpio_keys);
}

MIPS_MACHINE(ATH79_MACH_TL_WA830RE_V2, "TL-WA830RE-v2", "TP-LINK TL-WA830RE v2",
             tl_wa830re_v2_setup);