/*
 * Copyright (C) 2009
 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
 *
 * 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 <linux/input.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>

#include <asm/mach-types.h>

#include "pcm037.h"
#include "common.h"
#include "devices-imx31.h"
#include "iomux-mx3.h"

static unsigned int pcm037_eet_pins[] = {
        /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
        IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
        /* GPIO keys */
        IOMUX_MODE(MX31_PIN_GPIO1_0,    IOMUX_CONFIG_GPIO), /* 0 */
        IOMUX_MODE(MX31_PIN_GPIO1_1,    IOMUX_CONFIG_GPIO), /* 1 */
        IOMUX_MODE(MX31_PIN_GPIO1_2,    IOMUX_CONFIG_GPIO), /* 2 */
        IOMUX_MODE(MX31_PIN_GPIO1_3,    IOMUX_CONFIG_GPIO), /* 3 */
        IOMUX_MODE(MX31_PIN_SVEN0,      IOMUX_CONFIG_GPIO), /* 32 */
        IOMUX_MODE(MX31_PIN_STX0,       IOMUX_CONFIG_GPIO), /* 33 */
        IOMUX_MODE(MX31_PIN_SRX0,       IOMUX_CONFIG_GPIO), /* 34 */
        IOMUX_MODE(MX31_PIN_SIMPD0,     IOMUX_CONFIG_GPIO), /* 35 */
        IOMUX_MODE(MX31_PIN_RTS1,       IOMUX_CONFIG_GPIO), /* 38 */
        IOMUX_MODE(MX31_PIN_CTS1,       IOMUX_CONFIG_GPIO), /* 39 */
        IOMUX_MODE(MX31_PIN_KEY_ROW4,   IOMUX_CONFIG_GPIO), /* 50 */
        IOMUX_MODE(MX31_PIN_KEY_ROW5,   IOMUX_CONFIG_GPIO), /* 51 */
        IOMUX_MODE(MX31_PIN_KEY_ROW6,   IOMUX_CONFIG_GPIO), /* 52 */
        IOMUX_MODE(MX31_PIN_KEY_ROW7,   IOMUX_CONFIG_GPIO), /* 53 */

        /* LEDs */
        IOMUX_MODE(MX31_PIN_DTR_DTE1,   IOMUX_CONFIG_GPIO), /* 44 */
        IOMUX_MODE(MX31_PIN_DSR_DTE1,   IOMUX_CONFIG_GPIO), /* 45 */
        IOMUX_MODE(MX31_PIN_KEY_COL5,   IOMUX_CONFIG_GPIO), /* 55 */
        IOMUX_MODE(MX31_PIN_KEY_COL6,   IOMUX_CONFIG_GPIO), /* 56 */
};

/* SPI */
static struct spi_board_info pcm037_spi_dev[] = {
        {
                .modalias       = "dac124s085",
                .max_speed_hz   = 400000,
                .bus_num        = 0,
                .chip_select    = 0,            /* Index in pcm037_spi1_cs[] */
                .mode           = SPI_CPHA,
        },
};

/* Platform Data for MXC CSPI */
static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};

static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
        .chipselect = pcm037_spi1_cs,
        .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
};

/* GPIO-keys input device */
static struct gpio_keys_button pcm037_gpio_keys[] = {
        {
                .type   = EV_KEY,
                .code   = KEY_L,
                .gpio   = 0,
                .desc   = "Wheel Manual",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_A,
                .gpio   = 1,
                .desc   = "Wheel AF",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_V,
                .gpio   = 2,
                .desc   = "Wheel View",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_M,
                .gpio   = 3,
                .desc   = "Wheel Menu",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_UP,
                .gpio   = 32,
                .desc   = "Nav Pad Up",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_RIGHT,
                .gpio   = 33,
                .desc   = "Nav Pad Right",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_DOWN,
                .gpio   = 34,
                .desc   = "Nav Pad Down",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_LEFT,
                .gpio   = 35,
                .desc   = "Nav Pad Left",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_ENTER,
                .gpio   = 38,
                .desc   = "Nav Pad Ok",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = KEY_O,
                .gpio   = 39,
                .desc   = "Wheel Off",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = BTN_FORWARD,
                .gpio   = 50,
                .desc   = "Focus Forward",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = BTN_BACK,
                .gpio   = 51,
                .desc   = "Focus Backward",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = BTN_MIDDLE,
                .gpio   = 52,
                .desc   = "Release Half",
                .wakeup = 0,
        }, {
                .type   = EV_KEY,
                .code   = BTN_EXTRA,
                .gpio   = 53,
                .desc   = "Release Full",
                .wakeup = 0,
        },
};

static const struct gpio_keys_platform_data
                pcm037_gpio_keys_platform_data __initconst = {
        .buttons        = pcm037_gpio_keys,
        .nbuttons       = ARRAY_SIZE(pcm037_gpio_keys),
        .rep            = 0, /* No auto-repeat */
};

int __init pcm037_eet_init_devices(void)
{
        if (pcm037_variant() != PCM037_EET)
                return 0;

        mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
                                ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");

        /* SPI */
        spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
        imx31_add_spi_imx0(&pcm037_spi1_pdata);

        imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);

        return 0;
}