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    = 1,            /* Index in pcm037_spi1_cs[] */
  54                 .mode           = SPI_CPHA,
  55         },
  56 };
  57
  58 /* Platform Data for MXC CSPI */
  59 static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
  60         .num_chipselect = 2,
  61 };
  62
  63 /* GPIO-keys input device */
  64 static 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
 152 static 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
 159 int __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 }