mach-pb44.c

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/*
 *  Atheros PB44 reference board support
 *
 *  Copyright (C) 2009-2010 Gabor Juhos <[email protected]>
 *
 *  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/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/i2c/pcf857x.h>

#include "machtypes.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-spi.h"
#include "dev-usb.h"
#include "pci.h"

#define PB44_GPIO_I2C_SCL   0
#define PB44_GPIO_I2C_SDA   1

#define PB44_GPIO_EXP_BASE  16
#define PB44_GPIO_SW_RESET  (PB44_GPIO_EXP_BASE + 6)
#define PB44_GPIO_SW_JUMP   (PB44_GPIO_EXP_BASE + 8)
#define PB44_GPIO_LED_JUMP1 (PB44_GPIO_EXP_BASE + 9)
#define PB44_GPIO_LED_JUMP2 (PB44_GPIO_EXP_BASE + 10)

#define PB44_KEYS_POLL_INTERVAL     20  /* msecs */
#define PB44_KEYS_DEBOUNCE_INTERVAL (3 * PB44_KEYS_POLL_INTERVAL)

static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
    .sda_pin        = PB44_GPIO_I2C_SDA,
    .scl_pin        = PB44_GPIO_I2C_SCL,
};

static struct platform_device pb44_i2c_gpio_device = {
    .name       = "i2c-gpio",
    .id     = 0,
    .dev = {
        .platform_data  = &pb44_i2c_gpio_data,
    }
};

static struct pcf857x_platform_data pb44_pcf857x_data = {
    .gpio_base  = PB44_GPIO_EXP_BASE,
};

static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
    {
        I2C_BOARD_INFO("pcf8575", 0x20),
        .platform_data  = &pb44_pcf857x_data,
    },
};

static struct gpio_led pb44_leds_gpio[] __initdata = {
    {
        .name       = "pb44:amber:jump1",
        .gpio       = PB44_GPIO_LED_JUMP1,
        .active_low = 1,
    }, {
        .name       = "pb44:green:jump2",
        .gpio       = PB44_GPIO_LED_JUMP2,
        .active_low = 1,
    },
};

static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
    {
        .desc       = "soft_reset",
        .type       = EV_KEY,
        .code       = KEY_RESTART,
        .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
        .gpio       = PB44_GPIO_SW_RESET,
        .active_low = 1,
    } , {
        .desc       = "jumpstart",
        .type       = EV_KEY,
        .code       = KEY_WPS_BUTTON,
        .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
        .gpio       = PB44_GPIO_SW_JUMP,
        .active_low = 1,
    }
};

static struct spi_board_info pb44_spi_info[] = {
    {
        .bus_num    = 0,
        .chip_select    = 0,
        .max_speed_hz   = 25000000,
        .modalias   = "m25p64",
    },
};

static struct ath79_spi_platform_data pb44_spi_data = {
    .bus_num        = 0,
    .num_chipselect     = 1,
};

static void __init pb44_init(void)
{
    i2c_register_board_info(0, pb44_i2c_board_info,
                ARRAY_SIZE(pb44_i2c_board_info));
    platform_device_register(&pb44_i2c_gpio_device);

    ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
                 pb44_leds_gpio);
    ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
                    ARRAY_SIZE(pb44_gpio_keys),
                    pb44_gpio_keys);
    ath79_register_spi(&pb44_spi_data, pb44_spi_info,
               ARRAY_SIZE(pb44_spi_info));
    ath79_register_usb();
    ath79_register_pci();
}

MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
         pb44_init);