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mach-pcm037_eet.c

/*
 * 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/gpio_keys.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>

#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/spi.h>

#include <asm/mach-types.h>

#include "pcm037.h"
#include "devices.h"
#include "devices-imx31.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 struct gpio_keys_platform_data pcm037_gpio_keys_platform_data = {
      .buttons    = pcm037_gpio_keys,
      .nbuttons   = ARRAY_SIZE(pcm037_gpio_keys),
      .rep        = 0, /* No auto-repeat */
};

static struct platform_device pcm037_gpio_keys_device = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data    = &pcm037_gpio_keys_platform_data,
      },
};

static int __init eet_init_devices(void)
{
      if (!machine_is_pcm037() || 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));
#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
      imx31_add_spi_imx0(&pcm037_spi1_pdata);
#endif

      platform_device_register(&pcm037_gpio_keys_device);

      return 0;
}

late_initcall(eet_init_devices);

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