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/*
 *  TP-Link Archer C25 v1 board support
 *
 *  Copyright (C) 2017 Ludwig Thomeczek <ledesrc@wxorx.net>
 *  based on mach-archer-c60/C59-v1.c
 *  Copyright (C) 2016 Henryk Heisig <hyniu@o2.pl>
 *
 *  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/platform_device.h>
#include <linux/ath9k_platform.h>
#include <linux/ar8216_platform.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include <linux/gpio.h>

#include "common.h"
#include "dev-m25p80.h"
#include "machtypes.h"
#include "pci.h"
#include "dev-ap9x-pci.h"
#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-spi.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include <linux/spi/spi_gpio.h>
#include <linux/spi/74x164.h>

#define ARCHER_C25_GPIO_SHIFT_OE        21 /* OE,   Output Enable */
#define ARCHER_C25_GPIO_SHIFT_SER       14 /* DS,   Data Serial Input */
#define ARCHER_C25_GPIO_SHIFT_SRCLK     15 /* SHCP, Shift Reg Clock Input */
#define ARCHER_C25_GPIO_SHIFT_SRCLR     19 /* MR,   Master Reset */
#define ARCHER_C25_GPIO_SHIFT_RCLK      16 /* STCP, Storage Reg Clock Input */

#define ARCHER_C25_74HC_GPIO_BASE               32
#define ARCHER_C25_74HC_GPIO_LED_WAN_AMBER      (ARCHER_C25_74HC_GPIO_BASE + 4)
#define ARCHER_C25_74HC_GPIO_LED_WAN_GREEN      (ARCHER_C25_74HC_GPIO_BASE + 5)
#define ARCHER_C25_74HC_GPIO_LED_WLAN2          (ARCHER_C25_74HC_GPIO_BASE + 6)
#define ARCHER_C25_74HC_GPIO_LED_WLAN5          (ARCHER_C25_74HC_GPIO_BASE + 7)
#define ARCHER_C25_74HC_GPIO_LED_LAN1           (ARCHER_C25_74HC_GPIO_BASE + 0)
#define ARCHER_C25_74HC_GPIO_LED_LAN2           (ARCHER_C25_74HC_GPIO_BASE + 1)
#define ARCHER_C25_74HC_GPIO_LED_LAN3           (ARCHER_C25_74HC_GPIO_BASE + 2)
#define ARCHER_C25_74HC_GPIO_LED_LAN4           (ARCHER_C25_74HC_GPIO_BASE + 3)

#define ARCHER_C25_V1_SSR_BIT_0                 0
#define ARCHER_C25_V1_SSR_BIT_1                 1
#define ARCHER_C25_V1_SSR_BIT_2                 2
#define ARCHER_C25_V1_SSR_BIT_3                 3
#define ARCHER_C25_V1_SSR_BIT_4                 4
#define ARCHER_C25_V1_SSR_BIT_5                 5
#define ARCHER_C25_V1_SSR_BIT_6                 6
#define ARCHER_C25_V1_SSR_BIT_7                 7


#define ARCHER_C25_V1_KEYS_POLL_INTERVAL        20
#define ARCHER_C25_V1_KEYS_DEBOUNCE_INTERVAL    \
                                        (3 * ARCHER_C25_V1_KEYS_POLL_INTERVAL)

#define ARCHER_C25_V1_GPIO_BTN_RESET            1
#define ARCHER_C25_V1_GPIO_BTN_RFKILL           22

#define ARCHER_C25_V1_GPIO_LED_POWER            17
#define ARCHER_C25_V1_GPIO_LED_WPS              2

#define ARCHER_C25_V1_WMAC_CALDATA_OFFSET       0x1000

static struct spi_gpio_platform_data archer_c25_v1_spi_data = {
        .sck            = ARCHER_C25_GPIO_SHIFT_SRCLK,
        .miso           = SPI_GPIO_NO_MISO,
        .mosi           = ARCHER_C25_GPIO_SHIFT_SER,
        .num_chipselect = 1,
};

static u8 archer_c25_v1_ssr_initdata[] = {
        BIT(ARCHER_C25_V1_SSR_BIT_7) |
        BIT(ARCHER_C25_V1_SSR_BIT_6) |
        BIT(ARCHER_C25_V1_SSR_BIT_5) |
        BIT(ARCHER_C25_V1_SSR_BIT_4) |
        BIT(ARCHER_C25_V1_SSR_BIT_3) |
        BIT(ARCHER_C25_V1_SSR_BIT_2) |
        BIT(ARCHER_C25_V1_SSR_BIT_1)
};

static struct gen_74x164_chip_platform_data archer_c25_v1_ssr_data = {
        .base = ARCHER_C25_74HC_GPIO_BASE,
        .num_registers = ARRAY_SIZE(archer_c25_v1_ssr_initdata),
        .init_data = archer_c25_v1_ssr_initdata,
};

static struct platform_device archer_c25_v1_spi_device = {
        .name           = "spi_gpio",
        .id             = 1,
        .dev = {
                .platform_data = &archer_c25_v1_spi_data,
        },
};

static struct spi_board_info archer_c25_v1_spi_info[] = {
        {
                .bus_num                = 1,
                .chip_select            = 0,
                .max_speed_hz           = 10000000,
                .modalias               = "74x164",
                .platform_data          = &archer_c25_v1_ssr_data,
                .controller_data        = (void *) ARCHER_C25_GPIO_SHIFT_RCLK,
        },
};

static struct gpio_led archer_c25_v1_leds_gpio[] __initdata = {
        {
                .name           = "archer-c25-v1:green:power",
                .gpio           = ARCHER_C25_V1_GPIO_LED_POWER,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:wps",
                .gpio           = ARCHER_C25_V1_GPIO_LED_WPS,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:wlan2g",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_WLAN2,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:wlan5g",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_WLAN5,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:lan1",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_LAN1,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:lan2",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_LAN2,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:lan3",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_LAN3,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:lan4",
                .gpio           = ARCHER_C25_74HC_GPIO_LED_LAN4,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:green:wan",
                .gpio           =  ARCHER_C25_74HC_GPIO_LED_WAN_GREEN,
                .active_low     = 1,
        }, {
                .name           = "archer-c25-v1:amber:wan",
                .gpio           =  ARCHER_C25_74HC_GPIO_LED_WAN_AMBER,
                .active_low     = 1,
        },
};

static struct gpio_keys_button archer_c25_v1_gpio_keys[] __initdata = {
        {
                .desc                   = "Reset button",
                .type                   = EV_KEY,
                .code                   = KEY_RESTART,
                .debounce_interval      = ARCHER_C25_V1_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = ARCHER_C25_V1_GPIO_BTN_RESET,
                .active_low             = 1,
        }, {
                .desc                   = "RFKILL button",
                .type                   = EV_KEY,
                .code                   = KEY_RFKILL,
                .debounce_interval      = ARCHER_C25_V1_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = ARCHER_C25_V1_GPIO_BTN_RFKILL,
                .active_low             = 1,
        },
};

static void __init archer_c25_v1_setup(void)
{
        u8 *mac = (u8 *) KSEG1ADDR(0x1f7e0008);
        u8 *art = (u8 *) KSEG1ADDR(0x1f7f0000);

        ath79_register_m25p80(NULL);

        spi_register_board_info(archer_c25_v1_spi_info,
                                ARRAY_SIZE(archer_c25_v1_spi_info));

        platform_device_register(&archer_c25_v1_spi_device);

        gpio_request_one(ARCHER_C25_GPIO_SHIFT_OE,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
                         "LED control");

        gpio_request_one(ARCHER_C25_GPIO_SHIFT_SRCLR,
                         GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
                         "LED reset");

        ath79_register_leds_gpio(-1, ARRAY_SIZE(archer_c25_v1_leds_gpio),
                                 archer_c25_v1_leds_gpio);

        ath79_register_gpio_keys_polled(-1, ARCHER_C25_V1_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(archer_c25_v1_gpio_keys),
                                        archer_c25_v1_gpio_keys);

        ath79_register_mdio(0, 0x0);
        ath79_register_mdio(1, 0x0);

        ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
        ath79_init_mac(ath79_eth1_data.mac_addr, mac, 1);

        /* WAN port */
        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
        ath79_eth0_data.speed = SPEED_100;
        ath79_eth0_data.duplex = DUPLEX_FULL;
        ath79_eth0_data.phy_mask = BIT(4);
        ath79_register_eth(0);

        /* LAN ports */
        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
        ath79_eth1_data.speed = SPEED_1000;
        ath79_eth1_data.duplex = DUPLEX_FULL;
        ath79_switch_data.phy_poll_mask |= BIT(4);
        ath79_switch_data.phy4_mii_en = 1;
        ath79_register_eth(1);

        ath79_register_wmac(art + ARCHER_C25_V1_WMAC_CALDATA_OFFSET, mac);
        ap91_pci_init(NULL, NULL);
}

MIPS_MACHINE(ATH79_MACH_ARCHER_C25_V1, "ARCHER-C25-V1", "TP-LINK Archer C25 v1",
             archer_c25_v1_setup);