LXR linux/arch/arm/mach-imx/mach-pcm037

   1/*
   2 * Copyright (C) 2009
   3 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
   4 *
   5 * This program is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License version 2 as
   7 * published by the Free Software Foundation.
   8 */
   9#include <linux/gpio.h>
  10#include <linux/input.h>
  11#include <linux/platform_device.h>
  12#include <linux/spi/spi.h>
  13
  14#include <asm/mach-types.h>
  15
  16#include "pcm037.h"
  17#include "common.h"
  18#include "devices-imx31.h"
  19#include "iomux-mx3.h"
  20
  21static unsigned int pcm037_eet_pins[] = {
  22        /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
  23        IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
  24        /* GPIO keys */
  25        IOMUX_MODE(MX31_PIN_GPIO1_0,    IOMUX_CONFIG_GPIO), /* 0 */
  26        IOMUX_MODE(MX31_PIN_GPIO1_1,    IOMUX_CONFIG_GPIO), /* 1 */
  27        IOMUX_MODE(MX31_PIN_GPIO1_2,    IOMUX_CONFIG_GPIO), /* 2 */
  28        IOMUX_MODE(MX31_PIN_GPIO1_3,    IOMUX_CONFIG_GPIO), /* 3 */
  29        IOMUX_MODE(MX31_PIN_SVEN0,      IOMUX_CONFIG_GPIO), /* 32 */
  30        IOMUX_MODE(MX31_PIN_STX0,       IOMUX_CONFIG_GPIO), /* 33 */
  31        IOMUX_MODE(MX31_PIN_SRX0,       IOMUX_CONFIG_GPIO), /* 34 */
  32        IOMUX_MODE(MX31_PIN_SIMPD0,     IOMUX_CONFIG_GPIO), /* 35 */
  33        IOMUX_MODE(MX31_PIN_RTS1,       IOMUX_CONFIG_GPIO), /* 38 */
  34        IOMUX_MODE(MX31_PIN_CTS1,       IOMUX_CONFIG_GPIO), /* 39 */
  35        IOMUX_MODE(MX31_PIN_KEY_ROW4,   IOMUX_CONFIG_GPIO), /* 50 */
  36        IOMUX_MODE(MX31_PIN_KEY_ROW5,   IOMUX_CONFIG_GPIO), /* 51 */
  37        IOMUX_MODE(MX31_PIN_KEY_ROW6,   IOMUX_CONFIG_GPIO), /* 52 */
  38        IOMUX_MODE(MX31_PIN_KEY_ROW7,   IOMUX_CONFIG_GPIO), /* 53 */
  39
  40        /* LEDs */
  41        IOMUX_MODE(MX31_PIN_DTR_DTE1,   IOMUX_CONFIG_GPIO), /* 44 */
  42        IOMUX_MODE(MX31_PIN_DSR_DTE1,   IOMUX_CONFIG_GPIO), /* 45 */
  43        IOMUX_MODE(MX31_PIN_KEY_COL5,   IOMUX_CONFIG_GPIO), /* 55 */
  44        IOMUX_MODE(MX31_PIN_KEY_COL6,   IOMUX_CONFIG_GPIO), /* 56 */
  45};
  46
  47/* SPI */
  48static struct spi_board_info pcm037_spi_dev[] = {
  49        {
  50                .modalias       = "dac124s085",
  51                .max_speed_hz   = 400000,
  52                .bus_num        = 0,
  53                .chip_select    = 1,            /* Index in pcm037_spi1_cs[] */
  54                .mode           = SPI_CPHA,
  55        },
  56};
  57
  58/* Platform Data for MXC CSPI */
  59static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
  60        .num_chipselect = 2,
  61};
  62
  63/* GPIO-keys input device */
  64static struct gpio_keys_button pcm037_gpio_keys[] = {
  65        {
  66                .type   = EV_KEY,
  67                .code   = KEY_L,
  68                .gpio   = 0,
  69                .desc   = "Wheel Manual",
  70                .wakeup = 0,
  71        }, {
  72                .type   = EV_KEY,
  73                .code   = KEY_A,
  74                .gpio   = 1,
  75                .desc   = "Wheel AF",
  76                .wakeup = 0,
  77        }, {
  78                .type   = EV_KEY,
  79                .code   = KEY_V,
  80                .gpio   = 2,
  81                .desc   = "Wheel View",
  82                .wakeup = 0,
  83        }, {
  84                .type   = EV_KEY,
  85                .code   = KEY_M,
  86                .gpio   = 3,
  87                .desc   = "Wheel Menu",
  88                .wakeup = 0,
  89        }, {
  90                .type   = EV_KEY,
  91                .code   = KEY_UP,
  92                .gpio   = 32,
  93                .desc   = "Nav Pad Up",
  94                .wakeup = 0,
  95        }, {
  96                .type   = EV_KEY,
  97                .code   = KEY_RIGHT,
  98                .gpio   = 33,
  99                .desc   = "Nav Pad Right",
 100                .wakeup = 0,
 101        }, {
 102                .type   = EV_KEY,
 103                .code   = KEY_DOWN,
 104                .gpio   = 34,
 105                .desc   = "Nav Pad Down",
 106                .wakeup = 0,
 107        }, {
 108                .type   = EV_KEY,
 109                .code   = KEY_LEFT,
 110                .gpio   = 35,
 111                .desc   = "Nav Pad Left",
 112                .wakeup = 0,
 113        }, {
 114                .type   = EV_KEY,
 115                .code   = KEY_ENTER,
 116                .gpio   = 38,
 117                .desc   = "Nav Pad Ok",
 118                .wakeup = 0,
 119        }, {
 120                .type   = EV_KEY,
 121                .code   = KEY_O,
 122                .gpio   = 39,
 123                .desc   = "Wheel Off",
 124                .wakeup = 0,
 125        }, {
 126                .type   = EV_KEY,
 127                .code   = BTN_FORWARD,
 128                .gpio   = 50,
 129                .desc   = "Focus Forward",
 130                .wakeup = 0,
 131        }, {
 132                .type   = EV_KEY,
 133                .code   = BTN_BACK,
 134                .gpio   = 51,
 135                .desc   = "Focus Backward",
 136                .wakeup = 0,
 137        }, {
 138                .type   = EV_KEY,
 139                .code   = BTN_MIDDLE,
 140                .gpio   = 52,
 141                .desc   = "Release Half",
 142                .wakeup = 0,
 143        }, {
 144                .type   = EV_KEY,
 145                .code   = BTN_EXTRA,
 146                .gpio   = 53,
 147                .desc   = "Release Full",
 148                .wakeup = 0,
 149        },
 150};
 151
 152static const struct gpio_keys_platform_data
 153                pcm037_gpio_keys_platform_data __initconst = {
 154        .buttons        = pcm037_gpio_keys,
 155        .nbuttons       = ARRAY_SIZE(pcm037_gpio_keys),
 156        .rep            = 0, /* No auto-repeat */
 157};
 158
 159int __init pcm037_eet_init_devices(void)
 160{
 161        if (pcm037_variant() != PCM037_EET)
 162                return 0;
 163
 164        mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
 165                                ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
 166
 167        /* SPI */
 168        spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
 169        imx31_add_spi_imx0(&pcm037_spi1_pdata);
 170
 171        imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
 172
 173        return 0;
 174}
 175