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/*
 * TP-LINK TL-WR810N board support
 *
 * Copyright (c) 2012 Qualcomm Atheros
 * Copyright (c) 2012 Gabor Juhos <juhosg@openwrt.org>
 * Copyright (c) 2016 Jens Steinhauser <jens.steinhauser@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/ar8216_platform.h>

#include <asm/mach-ath79/ar71xx_regs.h>

#include "common.h"
#include "dev-gpio-buttons.h"
#include "dev-eth.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"

#define TL_WR810N_GPIO_SWITCH_B1        0
#define TL_WR810N_GPIO_SWITCH_B0        1
#define TL_WR810N_GPIO_USB_POWER        11
#define TL_WR810N_GPIO_BTN_RESET        12
#define TL_WR810N_GPIO_LED_SYSTEM       13

#define TL_WR810N_KEYS_POLL_INTERVAL    20 /* msecs */
#define TL_WR810N_KEYS_DEBOUNCE_INTERVAL (3 * TL_WR810N_KEYS_POLL_INTERVAL)

#define TL_WR810N_WMAC_CALDATA_OFFSET   0x1000

static const char *tl_wr810n_part_probes[] = {
        "tp-link",
        NULL,
};

static struct flash_platform_data tl_wr810n_flash_data = {
        .part_probes = tl_wr810n_part_probes,
};

static struct gpio_led tl_wr810n_leds_gpio[] __initdata = {
        {
                .name           = "tp-link:blue:system",
                .gpio           = TL_WR810N_GPIO_LED_SYSTEM,
                .active_low     = 1,
        },
};

static struct gpio_keys_button tl_wr810n_gpio_keys[] __initdata = {
        {
                .desc           = "reset",
                .type           = EV_KEY,
                .code           = KEY_RESTART,
                .debounce_interval = TL_WR810N_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TL_WR810N_GPIO_BTN_RESET,
                .active_low     = 1,
        },
        {
                .desc           = "switch_b0",
                .type           = EV_SW,
                .code           = BTN_0,
                .debounce_interval = TL_WR810N_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TL_WR810N_GPIO_SWITCH_B0,
                .active_low     = 0,
        },
        {
                .desc           = "switch_b1",
                .type           = EV_SW,
                .code           = BTN_1,
                .debounce_interval = TL_WR810N_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TL_WR810N_GPIO_SWITCH_B1,
                .active_low     = 0,
        },
};

static void __init tl_ap143_setup(int lan_mac_offset)
{
        u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
        u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);

        ath79_register_m25p80(&tl_wr810n_flash_data);

        ath79_setup_ar933x_phy4_switch(false, false);

        ath79_register_mdio(0, 0x0);

        /* WAN */
        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
        ath79_eth0_data.duplex = DUPLEX_FULL;
        ath79_eth0_data.speed = SPEED_100;
        ath79_eth0_data.phy_mask = BIT(4);
        ath79_init_mac(ath79_eth0_data.mac_addr, mac, 1);
        ath79_register_eth(0);

        /* LAN */
        ath79_switch_data.phy4_mii_en = 1;
        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
        ath79_eth1_data.duplex = DUPLEX_FULL;
        ath79_eth1_data.speed = SPEED_1000;
        ath79_switch_data.phy_poll_mask |= BIT(4);
        ath79_init_mac(ath79_eth1_data.mac_addr, mac, lan_mac_offset);
        ath79_register_eth(1);

        ath79_register_wmac(art + TL_WR810N_WMAC_CALDATA_OFFSET, mac);

        ath79_register_leds_gpio(-1,
                                 ARRAY_SIZE(tl_wr810n_leds_gpio),
                                 tl_wr810n_leds_gpio);
        ath79_register_gpio_keys_polled(-1,
                                        TL_WR810N_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(tl_wr810n_gpio_keys),
                                        tl_wr810n_gpio_keys);
}

static void __init tl_wr810n_setup(void)
{
        tl_ap143_setup(-1);

        gpio_request_one(TL_WR810N_GPIO_USB_POWER,
                         GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
                         "USB power");
        ath79_register_usb();
}

static void __init tl_wr810n_v2_setup(void)
{
        tl_ap143_setup(0);
}

MIPS_MACHINE(ATH79_MACH_TL_WR810N, "TL-WR810N", "TP-LINK TL-WR810N",
             tl_wr810n_setup);

MIPS_MACHINE(ATH79_MACH_TL_WR810N_V2, "TL-WR810N-v2", "TP-LINK TL-WR810N v2",
             tl_wr810n_v2_setup);