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