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/*
 * ALFA Network N5Q board support
 *
 * Copyright (C) 2018 Piotr Dymacz <pepe2k@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/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-wmac.h"
#include "machtypes.h"

#define N5Q_GPIO_LED_LAN        19
#define N5Q_GPIO_LED_SIGNAL1    0
#define N5Q_GPIO_LED_SIGNAL2    1
#define N5Q_GPIO_LED_SIGNAL3    2
#define N5Q_GPIO_LED_SIGNAL4    3
#define N5Q_GPIO_LED_WAN        18
#define N5Q_GPIO_LED_WLAN       12

#define N5Q_GPIO_WDT_EN         16
#define N5Q_GPIO_WDT_IN         17

#define N5Q_GPIO_BTN_RESET      11

#define N5Q_MAC0_OFFSET         0
#define N5Q_MAC1_OFFSET         6
#define N5Q_WMAC_CALDATA_OFFSET 0x1000

#define N5Q_KEYS_POLL_INTERVAL          20
#define N5Q_KEYS_DEBOUNCE_INTERVAL      (3 * N5Q_KEYS_POLL_INTERVAL)

static struct gpio_led n5q_leds_gpio[] __initdata = {
        {
                .name           = "n5q:green:lan",
                .gpio           = N5Q_GPIO_LED_LAN,
                .active_low     = 1,
        }, {
                .name           = "n5q:red:signal1",
                .gpio           = N5Q_GPIO_LED_SIGNAL1,
                .active_low     = 1,
        }, {
                .name           = "n5q:orange:signal2",
                .gpio           = N5Q_GPIO_LED_SIGNAL2,
                .active_low     = 1,
        }, {
                .name           = "n5q:green:signal3",
                .gpio           = N5Q_GPIO_LED_SIGNAL3,
                .active_low     = 1,
        }, {
                .name           = "n5q:green:signal4",
                .gpio           = N5Q_GPIO_LED_SIGNAL4,
                .active_low     = 1,
        }, {
                .name           = "n5q:green:wan",
                .gpio           = N5Q_GPIO_LED_WAN,
                .active_low     = 1,
        }, {
                .name           = "n5q:green:wlan",
                .gpio           = N5Q_GPIO_LED_WLAN,
                .active_low     = 1,
        },
};

static struct gpio_keys_button n5q_gpio_keys[] __initdata = {
        {
                .desc                   = "reset",
                .type                   = EV_KEY,
                .code                   = KEY_RESTART,
                .debounce_interval      = N5Q_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = N5Q_GPIO_BTN_RESET,
                .active_low             = 1,
        },
};

static void __init n5q_setup(void)
{
        u8 *art = (u8 *) KSEG1ADDR(0x1f070000);

        ath79_register_m25p80(NULL);

        ath79_register_mdio(1, 0x0);

        ath79_switch_data.phy4_mii_en = 1;
        ath79_switch_data.phy_poll_mask = 0xf7;

        /* LAN */
        ath79_eth1_data.duplex = DUPLEX_FULL;
        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
        ath79_init_mac(ath79_eth1_data.mac_addr, art + N5Q_MAC1_OFFSET, 0);
        ath79_register_eth(1);

        /* WAN */
        ath79_eth0_data.duplex = DUPLEX_FULL;
        ath79_eth0_data.mii_bus_dev = &ath79_mdio1_device.dev;
        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
        ath79_eth0_data.phy_mask = BIT(4);
        ath79_eth0_data.speed = SPEED_100;
        ath79_init_mac(ath79_eth0_data.mac_addr, art + N5Q_MAC0_OFFSET, 0);
        ath79_register_eth(0);

        ath79_register_leds_gpio(-1, ARRAY_SIZE(n5q_leds_gpio),
                                 n5q_leds_gpio);

        ath79_register_gpio_keys_polled(-1, N5Q_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(n5q_gpio_keys),
                                        n5q_gpio_keys);

        gpio_request_one(N5Q_GPIO_WDT_IN,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
                         "WDT input");

        gpio_request_one(N5Q_GPIO_WDT_EN,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
                         "WDT enable");

        ath79_register_wmac(art + N5Q_WMAC_CALDATA_OFFSET, NULL);
}

MIPS_MACHINE(ATH79_MACH_N5Q, "N5Q", "ALFA Network N5Q", n5q_setup);