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 <asm/mach-types.h>
  15
  16 #include "pcm037.h"
  17 #include "common.h"
  18 #include "devices-imx31.h"
  19 #include "iomux-mx3.h"
  20
  21 static 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 */
  48 static struct spi_board_info pcm037_spi_dev[] = {
  49         {
  50                 .modalias       = "dac124s085",
  51                 .max_speed_hz   = 400000,
  52                 .bus_num        = 0,
  53                 .chip_select    = 0,            /* Index in pcm037_spi1_cs[] */
  54                 .mode           = SPI_CPHA,
  55         },
  56 };
  57
  58 /* Platform Data for MXC CSPI */
  59 static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
  60
  61 static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
  62         .chipselect = pcm037_spi1_cs,
  63         .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
  64 };
  65
  66 /* GPIO-keys input device */
  67 static struct gpio_keys_button pcm037_gpio_keys[] = {
  68         {
  69                 .type   = EV_KEY,
  70                 .code   = KEY_L,
  71                 .gpio   = 0,
  72                 .desc   = "Wheel Manual",
  73                 .wakeup = 0,
  74         }, {
  75                 .type   = EV_KEY,
  76                 .code   = KEY_A,
  77                 .gpio   = 1,
  78                 .desc   = "Wheel AF",
  79                 .wakeup = 0,
  80         }, {
  81                 .type   = EV_KEY,
  82                 .code   = KEY_V,
  83                 .gpio   = 2,
  84                 .desc   = "Wheel View",
  85                 .wakeup = 0,
  86         }, {
  87                 .type   = EV_KEY,
  88                 .code   = KEY_M,
  89                 .gpio   = 3,
  90                 .desc   = "Wheel Menu",
  91                 .wakeup = 0,
  92         }, {
  93                 .type   = EV_KEY,
  94                 .code   = KEY_UP,
  95                 .gpio   = 32,
  96                 .desc   = "Nav Pad Up",
  97                 .wakeup = 0,
  98         }, {
  99                 .type   = EV_KEY,
 100                 .code   = KEY_RIGHT,
 101                 .gpio   = 33,
 102                 .desc   = "Nav Pad Right",
 103                 .wakeup = 0,
 104         }, {
 105                 .type   = EV_KEY,
 106                 .code   = KEY_DOWN,
 107                 .gpio   = 34,
 108                 .desc   = "Nav Pad Down",
 109                 .wakeup = 0,
 110         }, {
 111                 .type   = EV_KEY,
 112                 .code   = KEY_LEFT,
 113                 .gpio   = 35,
 114                 .desc   = "Nav Pad Left",
 115                 .wakeup = 0,
 116         }, {
 117                 .type   = EV_KEY,
 118                 .code   = KEY_ENTER,
 119                 .gpio   = 38,
 120                 .desc   = "Nav Pad Ok",
 121                 .wakeup = 0,
 122         }, {
 123                 .type   = EV_KEY,
 124                 .code   = KEY_O,
 125                 .gpio   = 39,
 126                 .desc   = "Wheel Off",
 127                 .wakeup = 0,
 128         }, {
 129                 .type   = EV_KEY,
 130                 .code   = BTN_FORWARD,
 131                 .gpio   = 50,
 132                 .desc   = "Focus Forward",
 133                 .wakeup = 0,
 134         }, {
 135                 .type   = EV_KEY,
 136                 .code   = BTN_BACK,
 137                 .gpio   = 51,
 138                 .desc   = "Focus Backward",
 139                 .wakeup = 0,
 140         }, {
 141                 .type   = EV_KEY,
 142                 .code   = BTN_MIDDLE,
 143                 .gpio   = 52,
 144                 .desc   = "Release Half",
 145                 .wakeup = 0,
 146         }, {
 147                 .type   = EV_KEY,
 148                 .code   = BTN_EXTRA,
 149                 .gpio   = 53,
 150                 .desc   = "Release Full",
 151                 .wakeup = 0,
 152         },
 153 };
 154
 155 static const struct gpio_keys_platform_data
 156                 pcm037_gpio_keys_platform_data __initconst = {
 157         .buttons        = pcm037_gpio_keys,
 158         .nbuttons       = ARRAY_SIZE(pcm037_gpio_keys),
 159         .rep            = 0, /* No auto-repeat */
 160 };
 161
 162 int __init pcm037_eet_init_devices(void)
 163 {
 164         if (pcm037_variant() != PCM037_EET)
 165                 return 0;
 166
 167         mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
 168                                 ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
 169
 170         /* SPI */
 171         spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
 172         imx31_add_spi_imx0(&pcm037_spi1_pdata);
 173
 174         imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
 175
 176         return 0;
 177 }