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/*
 *  Hak5 WiFi Pineapple NANO board support
 *
 *  Copyright (C) 2018 Sebastian Kinne <seb@hak5.org>
 *  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 <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 WIFI_PINEAPPLE_NANO_GPIO_LED_SYSTEM     18

#define WIFI_PINEAPPLE_NANO_GPIO_BTN_RESET      12
#define WIFI_PINEAPPLE_NANO_GPIO_SD_DET         19
#define WIFI_PINEAPPLE_NANO_GPIO_USB_ALARM      20
#define WIFI_PINEAPPLE_NANO_GPIO_USB_POWER      23

#define HAK5_KEYS_POLL_INTERVAL                 20 /* msecs */
#define HAK5_KEYS_DEBOUNCE_INTERVAL             (3 * HAK5_KEYS_POLL_INTERVAL)

#define WIFI_PINEAPPLE_NANO_MAC1_OFFSET         0x0006
#define WIFI_PINEAPPLE_NANO_CALDATA_OFFSET      0x1000

static const char *hak5_part_probes[] = {
        "tp-link",
        NULL,
};

static struct flash_platform_data hak5_flash_data = {
        .part_probes = hak5_part_probes,
};

static struct gpio_led wifi_pineapple_nano_leds_gpio[] __initdata = {
        {
                .name           = "wifi-pineapple-nano:blue:system",
                .gpio           = WIFI_PINEAPPLE_NANO_GPIO_LED_SYSTEM,
                .active_low     = 1,
        },
};

static struct gpio_keys_button wifi_pineapple_nano_gpio_keys[] __initdata = {
        {
                .desc                   = "reset",
                .type                   = EV_KEY,
                .code                   = KEY_RESTART,
                .debounce_interval      = HAK5_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = WIFI_PINEAPPLE_NANO_GPIO_BTN_RESET,
                .active_low             = 1,
        }
};

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

        ath79_register_m25p80(&hak5_flash_data);

        ath79_setup_ar933x_phy4_switch(false, false);
        ath79_register_mdio(0, 0x0);

        ath79_init_mac(ath79_eth0_data.mac_addr,
                       art + WIFI_PINEAPPLE_NANO_MAC1_OFFSET, 0);
        ath79_register_eth(0);

        /* GPIO11/12 */
        ath79_gpio_function_disable(AR933X_GPIO_FUNC_UART_RTS_CTS_EN);

        gpio_request_one(WIFI_PINEAPPLE_NANO_GPIO_SD_DET,
                         GPIOF_IN | GPIOF_EXPORT_DIR_FIXED | GPIOF_ACTIVE_LOW,
                         "SD card present");

        gpio_request_one(WIFI_PINEAPPLE_NANO_GPIO_USB_ALARM,
                         GPIOF_IN | GPIOF_EXPORT_DIR_FIXED | GPIOF_ACTIVE_LOW,
                         "USB alarm");

        gpio_request_one(WIFI_PINEAPPLE_NANO_GPIO_USB_POWER,
                         GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED |
                         GPIOF_ACTIVE_LOW, "USB power");

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

        ath79_register_gpio_keys_polled(-1, HAK5_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(wifi_pineapple_nano_gpio_keys),
                                        wifi_pineapple_nano_gpio_keys);

        ath79_register_usb();
        ath79_register_wmac(art + WIFI_PINEAPPLE_NANO_CALDATA_OFFSET, NULL);
}

MIPS_MACHINE(ATH79_MACH_WIFI_PINEAPPLE_NANO, "WIFI-PINEAPPLE-NANO",
             "Hak5 WiFi Pineapple NANO", wifi_pineapple_nano_setup);