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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2009
   4  * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
   5  */
   6 #include <linux/gpio.h>
   7 #include <linux/input.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/spi/spi.h>
  10
  11 #include <asm/mach-types.h>
  12
  13 #include "pcm037.h"
  14 #include "common.h"
  15 #include "devices-imx31.h"
  16 #include "iomux-mx3.h"
  17
  18 static unsigned int pcm037_eet_pins[] = {
  19         /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
  20         IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
  21         /* GPIO keys */
  22         IOMUX_MODE(MX31_PIN_GPIO1_0,    IOMUX_CONFIG_GPIO), /* 0 */
  23         IOMUX_MODE(MX31_PIN_GPIO1_1,    IOMUX_CONFIG_GPIO), /* 1 */
  24         IOMUX_MODE(MX31_PIN_GPIO1_2,    IOMUX_CONFIG_GPIO), /* 2 */
  25         IOMUX_MODE(MX31_PIN_GPIO1_3,    IOMUX_CONFIG_GPIO), /* 3 */
  26         IOMUX_MODE(MX31_PIN_SVEN0,      IOMUX_CONFIG_GPIO), /* 32 */
  27         IOMUX_MODE(MX31_PIN_STX0,       IOMUX_CONFIG_GPIO), /* 33 */
  28         IOMUX_MODE(MX31_PIN_SRX0,       IOMUX_CONFIG_GPIO), /* 34 */
  29         IOMUX_MODE(MX31_PIN_SIMPD0,     IOMUX_CONFIG_GPIO), /* 35 */
  30         IOMUX_MODE(MX31_PIN_RTS1,       IOMUX_CONFIG_GPIO), /* 38 */
  31         IOMUX_MODE(MX31_PIN_CTS1,       IOMUX_CONFIG_GPIO), /* 39 */
  32         IOMUX_MODE(MX31_PIN_KEY_ROW4,   IOMUX_CONFIG_GPIO), /* 50 */
  33         IOMUX_MODE(MX31_PIN_KEY_ROW5,   IOMUX_CONFIG_GPIO), /* 51 */
  34         IOMUX_MODE(MX31_PIN_KEY_ROW6,   IOMUX_CONFIG_GPIO), /* 52 */
  35         IOMUX_MODE(MX31_PIN_KEY_ROW7,   IOMUX_CONFIG_GPIO), /* 53 */
  36
  37         /* LEDs */
  38         IOMUX_MODE(MX31_PIN_DTR_DTE1,   IOMUX_CONFIG_GPIO), /* 44 */
  39         IOMUX_MODE(MX31_PIN_DSR_DTE1,   IOMUX_CONFIG_GPIO), /* 45 */
  40         IOMUX_MODE(MX31_PIN_KEY_COL5,   IOMUX_CONFIG_GPIO), /* 55 */
  41         IOMUX_MODE(MX31_PIN_KEY_COL6,   IOMUX_CONFIG_GPIO), /* 56 */
  42 };
  43
  44 /* SPI */
  45 static struct spi_board_info pcm037_spi_dev[] = {
  46         {
  47                 .modalias       = "dac124s085",
  48                 .max_speed_hz   = 400000,
  49                 .bus_num        = 0,
  50                 .chip_select    = 1,            /* Index in pcm037_spi1_cs[] */
  51                 .mode           = SPI_CPHA,
  52         },
  53 };
  54
  55 /* GPIO-keys input device */
  56 static struct gpio_keys_button pcm037_gpio_keys[] = {
  57         {
  58                 .type   = EV_KEY,
  59                 .code   = KEY_L,
  60                 .gpio   = 0,
  61                 .desc   = "Wheel Manual",
  62                 .wakeup = 0,
  63         }, {
  64                 .type   = EV_KEY,
  65                 .code   = KEY_A,
  66                 .gpio   = 1,
  67                 .desc   = "Wheel AF",
  68                 .wakeup = 0,
  69         }, {
  70                 .type   = EV_KEY,
  71                 .code   = KEY_V,
  72                 .gpio   = 2,
  73                 .desc   = "Wheel View",
  74                 .wakeup = 0,
  75         }, {
  76                 .type   = EV_KEY,
  77                 .code   = KEY_M,
  78                 .gpio   = 3,
  79                 .desc   = "Wheel Menu",
  80                 .wakeup = 0,
  81         }, {
  82                 .type   = EV_KEY,
  83                 .code   = KEY_UP,
  84                 .gpio   = 32,
  85                 .desc   = "Nav Pad Up",
  86                 .wakeup = 0,
  87         }, {
  88                 .type   = EV_KEY,
  89                 .code   = KEY_RIGHT,
  90                 .gpio   = 33,
  91                 .desc   = "Nav Pad Right",
  92                 .wakeup = 0,
  93         }, {
  94                 .type   = EV_KEY,
  95                 .code   = KEY_DOWN,
  96                 .gpio   = 34,
  97                 .desc   = "Nav Pad Down",
  98                 .wakeup = 0,
  99         }, {
 100                 .type   = EV_KEY,
 101                 .code   = KEY_LEFT,
 102                 .gpio   = 35,
 103                 .desc   = "Nav Pad Left",
 104                 .wakeup = 0,
 105         }, {
 106                 .type   = EV_KEY,
 107                 .code   = KEY_ENTER,
 108                 .gpio   = 38,
 109                 .desc   = "Nav Pad Ok",
 110                 .wakeup = 0,
 111         }, {
 112                 .type   = EV_KEY,
 113                 .code   = KEY_O,
 114                 .gpio   = 39,
 115                 .desc   = "Wheel Off",
 116                 .wakeup = 0,
 117         }, {
 118                 .type   = EV_KEY,
 119                 .code   = BTN_FORWARD,
 120                 .gpio   = 50,
 121                 .desc   = "Focus Forward",
 122                 .wakeup = 0,
 123         }, {
 124                 .type   = EV_KEY,
 125                 .code   = BTN_BACK,
 126                 .gpio   = 51,
 127                 .desc   = "Focus Backward",
 128                 .wakeup = 0,
 129         }, {
 130                 .type   = EV_KEY,
 131                 .code   = BTN_MIDDLE,
 132                 .gpio   = 52,
 133                 .desc   = "Release Half",
 134                 .wakeup = 0,
 135         }, {
 136                 .type   = EV_KEY,
 137                 .code   = BTN_EXTRA,
 138                 .gpio   = 53,
 139                 .desc   = "Release Full",
 140                 .wakeup = 0,
 141         },
 142 };
 143
 144 static const struct gpio_keys_platform_data
 145                 pcm037_gpio_keys_platform_data __initconst = {
 146         .buttons        = pcm037_gpio_keys,
 147         .nbuttons       = ARRAY_SIZE(pcm037_gpio_keys),
 148         .rep            = 0, /* No auto-repeat */
 149 };
 150
 151 int __init pcm037_eet_init_devices(void)
 152 {
 153         if (pcm037_variant() != PCM037_EET)
 154                 return 0;
 155
 156         mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
 157                                 ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
 158
 159         /* SPI */
 160         spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
 161         imx31_add_spi_imx0(NULL);
 162
 163         imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
 164
 165         return 0;
 166 }