arch/arm/mach-mx3/mach-pcm037_eet.c

   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/gpio_keys.h>
  11 #include <linux/input.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/spi/spi.h>
  14
  15 #include <mach/common.h>
  16 #include <mach/iomux-mx3.h>
  17 #include <mach/spi.h>
  18
  19 #include <asm/mach-types.h>
  20
  21 #include "pcm037.h"
  22 #include "devices.h"
  23 #include "devices-imx31.h"
  24
  25 static unsigned int pcm037_eet_pins[] = {
  26         /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
  27         IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
  28         /* GPIO keys */
  29         IOMUX_MODE(MX31_PIN_GPIO1_0,    IOMUX_CONFIG_GPIO), /* 0 */
  30         IOMUX_MODE(MX31_PIN_GPIO1_1,    IOMUX_CONFIG_GPIO), /* 1 */
  31         IOMUX_MODE(MX31_PIN_GPIO1_2,    IOMUX_CONFIG_GPIO), /* 2 */
  32         IOMUX_MODE(MX31_PIN_GPIO1_3,    IOMUX_CONFIG_GPIO), /* 3 */
  33         IOMUX_MODE(MX31_PIN_SVEN0,      IOMUX_CONFIG_GPIO), /* 32 */
  34         IOMUX_MODE(MX31_PIN_STX0,       IOMUX_CONFIG_GPIO), /* 33 */
  35         IOMUX_MODE(MX31_PIN_SRX0,       IOMUX_CONFIG_GPIO), /* 34 */
  36         IOMUX_MODE(MX31_PIN_SIMPD0,     IOMUX_CONFIG_GPIO), /* 35 */
  37         IOMUX_MODE(MX31_PIN_RTS1,       IOMUX_CONFIG_GPIO), /* 38 */
  38         IOMUX_MODE(MX31_PIN_CTS1,       IOMUX_CONFIG_GPIO), /* 39 */
  39         IOMUX_MODE(MX31_PIN_KEY_ROW4,   IOMUX_CONFIG_GPIO), /* 50 */
  40         IOMUX_MODE(MX31_PIN_KEY_ROW5,   IOMUX_CONFIG_GPIO), /* 51 */
  41         IOMUX_MODE(MX31_PIN_KEY_ROW6,   IOMUX_CONFIG_GPIO), /* 52 */
  42         IOMUX_MODE(MX31_PIN_KEY_ROW7,   IOMUX_CONFIG_GPIO), /* 53 */
  43
  44         /* LEDs */
  45         IOMUX_MODE(MX31_PIN_DTR_DTE1,   IOMUX_CONFIG_GPIO), /* 44 */
  46         IOMUX_MODE(MX31_PIN_DSR_DTE1,   IOMUX_CONFIG_GPIO), /* 45 */
  47         IOMUX_MODE(MX31_PIN_KEY_COL5,   IOMUX_CONFIG_GPIO), /* 55 */
  48         IOMUX_MODE(MX31_PIN_KEY_COL6,   IOMUX_CONFIG_GPIO), /* 56 */
  49 };
  50
  51 /* SPI */
  52 static struct spi_board_info pcm037_spi_dev[] = {
  53         {
  54                 .modalias       = "dac124s085",
  55                 .max_speed_hz   = 400000,
  56                 .bus_num        = 0,
  57                 .chip_select    = 0,            /* Index in pcm037_spi1_cs[] */
  58                 .mode           = SPI_CPHA,
  59         },
  60 };
  61
  62 /* Platform Data for MXC CSPI */
  63 static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
  64
  65 static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
  66         .chipselect = pcm037_spi1_cs,
  67         .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
  68 };
  69
  70 /* GPIO-keys input device */
  71 static struct gpio_keys_button pcm037_gpio_keys[] = {
  72         {
  73                 .type   = EV_KEY,
  74                 .code   = KEY_L,
  75                 .gpio   = 0,
  76                 .desc   = "Wheel Manual",
  77                 .wakeup = 0,
  78         }, {
  79                 .type   = EV_KEY,
  80                 .code   = KEY_A,
  81                 .gpio   = 1,
  82                 .desc   = "Wheel AF",
  83                 .wakeup = 0,
  84         }, {
  85                 .type   = EV_KEY,
  86                 .code   = KEY_V,
  87                 .gpio   = 2,
  88                 .desc   = "Wheel View",
  89                 .wakeup = 0,
  90         }, {
  91                 .type   = EV_KEY,
  92                 .code   = KEY_M,
  93                 .gpio   = 3,
  94                 .desc   = "Wheel Menu",
  95                 .wakeup = 0,
  96         }, {
  97                 .type   = EV_KEY,
  98                 .code   = KEY_UP,
  99                 .gpio   = 32,
 100                 .desc   = "Nav Pad Up",
 101                 .wakeup = 0,
 102         }, {
 103                 .type   = EV_KEY,
 104                 .code   = KEY_RIGHT,
 105                 .gpio   = 33,
 106                 .desc   = "Nav Pad Right",
 107                 .wakeup = 0,
 108         }, {
 109                 .type   = EV_KEY,
 110                 .code   = KEY_DOWN,
 111                 .gpio   = 34,
 112                 .desc   = "Nav Pad Down",
 113                 .wakeup = 0,
 114         }, {
 115                 .type   = EV_KEY,
 116                 .code   = KEY_LEFT,
 117                 .gpio   = 35,
 118                 .desc   = "Nav Pad Left",
 119                 .wakeup = 0,
 120         }, {
 121                 .type   = EV_KEY,
 122                 .code   = KEY_ENTER,
 123                 .gpio   = 38,
 124                 .desc   = "Nav Pad Ok",
 125                 .wakeup = 0,
 126         }, {
 127                 .type   = EV_KEY,
 128                 .code   = KEY_O,
 129                 .gpio   = 39,
 130                 .desc   = "Wheel Off",
 131                 .wakeup = 0,
 132         }, {
 133                 .type   = EV_KEY,
 134                 .code   = BTN_FORWARD,
 135                 .gpio   = 50,
 136                 .desc   = "Focus Forward",
 137                 .wakeup = 0,
 138         }, {
 139                 .type   = EV_KEY,
 140                 .code   = BTN_BACK,
 141                 .gpio   = 51,
 142                 .desc   = "Focus Backward",
 143                 .wakeup = 0,
 144         }, {
 145                 .type   = EV_KEY,
 146                 .code   = BTN_MIDDLE,
 147                 .gpio   = 52,
 148                 .desc   = "Release Half",
 149                 .wakeup = 0,
 150         }, {
 151                 .type   = EV_KEY,
 152                 .code   = BTN_EXTRA,
 153                 .gpio   = 53,
 154                 .desc   = "Release Full",
 155                 .wakeup = 0,
 156         },
 157 };
 158
 159 static struct gpio_keys_platform_data pcm037_gpio_keys_platform_data = {
 160         .buttons        = pcm037_gpio_keys,
 161         .nbuttons       = ARRAY_SIZE(pcm037_gpio_keys),
 162         .rep            = 0, /* No auto-repeat */
 163 };
 164
 165 static struct platform_device pcm037_gpio_keys_device = {
 166         .name   = "gpio-keys",
 167         .id     = -1,
 168         .dev    = {
 169                 .platform_data  = &pcm037_gpio_keys_platform_data,
 170         },
 171 };
 172
 173 static int __init eet_init_devices(void)
 174 {
 175         if (!machine_is_pcm037() || pcm037_variant() != PCM037_EET)
 176                 return 0;
 177
 178         mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
 179                                 ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
 180
 181         /* SPI */
 182         spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
 183         imx31_add_spi_imx0(&pcm037_spi1_pdata);
 184
 185         platform_device_register(&pcm037_gpio_keys_device);
 186
 187         return 0;
 188 }
 189
 190 late_initcall(eet_init_devices);