arch/arm/mach-omap2/board-apollon-keys.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-apollon-keys.c
   3  *
   4  * Copyright (C) 2007 Samsung Electronics
   5  * Author: Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/input.h>
  16 #include <linux/gpio_keys.h>
  17
  18 #include <asm/arch/gpio.h>
  19 #include <asm/arch/mux.h>
  20
  21 #define SW_ENTER_GPIO16         16
  22 #define SW_UP_GPIO17            17
  23 #define SW_DOWN_GPIO58          58
  24
  25 static struct gpio_keys_button apollon_gpio_keys_buttons[] = {
  26         [0] = {
  27                 .keycode        = KEY_ENTER,
  28                 .gpio           = SW_ENTER_GPIO16,
  29                 .desc           = "enter sw",
  30         },
  31         [1] = {
  32                 .keycode        = KEY_UP,
  33                 .gpio           = SW_UP_GPIO17,
  34                 .desc           = "up sw",
  35         },
  36         [2] = {
  37                 .keycode        = KEY_DOWN,
  38                 .gpio           = SW_DOWN_GPIO58,
  39                 .desc           = "down sw",
  40         },
  41 };
  42
  43 static struct gpio_keys_platform_data apollon_gpio_keys = {
  44         .buttons                = apollon_gpio_keys_buttons,
  45         .nbuttons               = ARRAY_SIZE(apollon_gpio_keys_buttons),
  46 };
  47
  48 static struct platform_device apollon_gpio_keys_device = {
  49         .name                   = "gpio-keys",
  50         .id                     = -1,
  51         .dev                    = {
  52                 .platform_data  = &apollon_gpio_keys,
  53         },
  54 };
  55
  56 static void __init apollon_sw_init(void)
  57 {
  58         /* Enter SW - Y11 */
  59         omap_cfg_reg(Y11_242X_GPIO16);
  60         omap_request_gpio(SW_ENTER_GPIO16);
  61         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
  62         /* Up SW - AA12 */
  63         omap_cfg_reg(AA12_242X_GPIO17);
  64         omap_request_gpio(SW_UP_GPIO17);
  65         omap_set_gpio_direction(SW_UP_GPIO17, 1);
  66         /* Down SW - AA8 */
  67         omap_cfg_reg(AA8_242X_GPIO58);
  68         omap_request_gpio(SW_DOWN_GPIO58);
  69         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
  70 }
  71
  72 static int __init omap_apollon_keys_init(void)
  73 {
  74         apollon_sw_init();
  75
  76         return platform_device_register(&apollon_gpio_keys_device);
  77 }
  78
  79 arch_initcall(omap_apollon_keys_init);