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/*
 *  ALFA NETWORK Tube2H board support
 *
 *  Copyright (C) 2014 Gabor Juhos <juhosg@openwrt.org>
 *
 *  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 <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 TUBE2H_GPIO_LED_SIGNAL4         0
#define TUBE2H_GPIO_LED_SIGNAL3         1
#define TUBE2H_GPIO_LED_SIGNAL2         13
#define TUBE2H_GPIO_LED_LAN             17
#define TUBE2H_GPIO_LED_SIGNAL1         27
#define TUBE2H_GPIO_EXT_LNA             28

#define TUBE2H_GPIO_WDT_EN              22
#define TUBE2H_GPIO_WDT_IN              18

#define TUBE2H_GPIO_BTN_RESET           12

#define TUBE2H_KEYS_POLL_INTERVAL       20      /* msecs */
#define TUBE2H_KEYS_DEBOUNCE_INTERVAL   (3 * TUBE2H_KEYS_POLL_INTERVAL)

#define TUBE2H_ART_ADDRESS              0x1fff0000
#define TUBE2H_LAN_MAC_OFFSET           0x06
#define TUBE2H_CALDATA_OFFSET           0x1000

static struct gpio_led tube2h_leds_gpio[] __initdata = {
        {
                .name           = "alfa:blue:lan",
                .gpio           = TUBE2H_GPIO_LED_LAN,
                .active_low     = 1,
        },
        {
                .name           = "alfa:red:signal1",
                .gpio           = TUBE2H_GPIO_LED_SIGNAL1,
                .active_low     = 1,
        },
        {
                .name           = "alfa:orange:signal2",
                .gpio           = TUBE2H_GPIO_LED_SIGNAL2,
                .active_low     = 0,
        },
        {
                .name           = "alfa:green:signal3",
                .gpio           = TUBE2H_GPIO_LED_SIGNAL3,
                .active_low     = 0,
        },
        {
                .name           = "alfa:green:signal4",
                .gpio           = TUBE2H_GPIO_LED_SIGNAL4,
                .active_low     = 0,
        },
};

static struct gpio_keys_button tube2h_gpio_keys[] __initdata = {
        {
                .desc           = "Reset button",
                .type           = EV_KEY,
                .code           = KEY_RESTART,
                .debounce_interval = TUBE2H_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = TUBE2H_GPIO_BTN_RESET,
                .active_low     = 1,
        },
};

static void __init tube2h_setup(void)
{
        u8 *art = (u8 *) KSEG1ADDR(TUBE2H_ART_ADDRESS);
        u32 t;

        ath79_gpio_function_disable(AR933X_GPIO_FUNC_JTAG_DISABLE |
                                    AR933X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
                                    AR933X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
                                    AR933X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
                                    AR933X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
                                    AR933X_GPIO_FUNC_ETH_SWITCH_LED4_EN);

        /* Ensure that GPIO26 and GPIO27 are controllable by software */
        t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
        t |= AR933X_BOOTSTRAP_MDIO_GPIO_EN;
        ath79_reset_wr(AR933X_RESET_REG_BOOTSTRAP, t);

        gpio_request_one(TUBE2H_GPIO_EXT_LNA,
                        GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
                        "external LNA0");

        gpio_request_one(TUBE2H_GPIO_WDT_IN,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
                         "WDT input");

        gpio_request_one(TUBE2H_GPIO_WDT_EN,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
                         "WDT enable");

        ath79_register_wmac(art + TUBE2H_CALDATA_OFFSET, NULL);

        ath79_register_m25p80(NULL);

        ath79_register_leds_gpio(-1, ARRAY_SIZE(tube2h_leds_gpio),
                                 tube2h_leds_gpio);
        ath79_register_gpio_keys_polled(-1, TUBE2H_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(tube2h_gpio_keys),
                                        tube2h_gpio_keys);

        ath79_init_mac(ath79_eth0_data.mac_addr,
                       art + TUBE2H_LAN_MAC_OFFSET, 0);
        ath79_register_mdio(0, 0x0);
        ath79_register_eth(0);
}

MIPS_MACHINE(ATH79_MACH_TUBE2H, "TUBE2H", "ALFA NETWORK Tube2H",
             tube2h_setup);