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/*
 * Zbtlink ZBT-WE1526 board support
 *
 * Copyright (C) 2016 Piotr Dymacz <pepe2k@gmail.com>
 *
 * Based on mach-dr531.c and mach-tl-wr841n-v9.c
 *
 * 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 ZBT_WE1526_GPIO_LED_STATUS      13
#define ZBT_WE1526_GPIO_LED_LAN1        16
#define ZBT_WE1526_GPIO_LED_LAN2        15
#define ZBT_WE1526_GPIO_LED_LAN3        14
#define ZBT_WE1526_GPIO_LED_LAN4        11
#define ZBT_WE1526_GPIO_LED_WAN         4
#define ZBT_WE1526_GPIO_LED_WLAN        12

#define ZBT_WE1526_GPIO_BTN_RESET       17

#define ZBT_WE1526_KEYS_POLL_INTERVAL   20      /* msecs */
#define ZBT_WE1526_KEYS_DEBOUNCE_INTERVAL       \
        (3 * ZBT_WE1526_KEYS_POLL_INTERVAL)

#define ZBT_WE1526_MAC0_OFFSET          0x0
#define ZBT_WE1526_MAC1_OFFSET          0x6
#define ZBT_WE1526_WMAC_CALDATA_OFFSET  0x1000

static struct gpio_led zbt_we1526_leds_gpio[] __initdata = {
        {
                .name           = "zbt-we1526:green:status",
                .gpio           = ZBT_WE1526_GPIO_LED_STATUS,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:lan1",
                .gpio           = ZBT_WE1526_GPIO_LED_LAN1,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:lan2",
                .gpio           = ZBT_WE1526_GPIO_LED_LAN2,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:lan3",
                .gpio           = ZBT_WE1526_GPIO_LED_LAN3,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:lan4",
                .gpio           = ZBT_WE1526_GPIO_LED_LAN4,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:wan",
                .gpio           = ZBT_WE1526_GPIO_LED_WAN,
                .active_low     = 1,
        },
        {
                .name           = "zbt-we1526:green:wlan",
                .gpio           = ZBT_WE1526_GPIO_LED_WLAN,
                .active_low     = 1,
        },
};

static struct gpio_keys_button zbt_we1526_gpio_keys[] __initdata = {
        {
                .desc           = "reset",
                .type           = EV_KEY,
                .code           = KEY_RESTART,
                .debounce_interval = ZBT_WE1526_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = ZBT_WE1526_GPIO_BTN_RESET,
                .active_low     = 1,
        },
};

static void __init zbt_we1526_gpio_setup(void)
{
        /* For LED on GPIO4 */
        ath79_gpio_function_disable(AR934X_GPIO_FUNC_CLK_OBS4_EN);
        ath79_gpio_output_select(ZBT_WE1526_GPIO_LED_WAN, 0);

        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_STATUS, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN1, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN2, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN3, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN4, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_WAN, true);
        ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_WLAN, true);

        ath79_register_leds_gpio(-1, ARRAY_SIZE(zbt_we1526_leds_gpio),
                                 zbt_we1526_leds_gpio);

        ath79_register_gpio_keys_polled(-1, ZBT_WE1526_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(zbt_we1526_gpio_keys),
                                        zbt_we1526_gpio_keys);
}

static void __init zbt_we1526_setup(void)
{
        u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);

        ath79_register_m25p80(NULL);

        zbt_we1526_gpio_setup();

        ath79_setup_ar933x_phy4_switch(false, false);

        ath79_register_mdio(0, 0x0);

        /* LAN */
        ath79_eth1_data.duplex = DUPLEX_FULL;
        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
        ath79_switch_data.phy_poll_mask |= BIT(4);
        ath79_init_mac(ath79_eth1_data.mac_addr,
                       art + ZBT_WE1526_MAC0_OFFSET, 0);
        ath79_register_eth(1);

        /* WAN */
        ath79_switch_data.phy4_mii_en = 1;
        ath79_eth0_data.duplex = DUPLEX_FULL;
        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 + ZBT_WE1526_MAC1_OFFSET, 0);
        ath79_register_eth(0);

        ath79_register_wmac(art + ZBT_WE1526_WMAC_CALDATA_OFFSET, NULL);

        ath79_register_usb();
}

MIPS_MACHINE(ATH79_MACH_ZBT_WE1526, "ZBT-WE1526", "Zbtlink ZBT-WE1526",
             zbt_we1526_setup);