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 #define SW_LEFT_GPIO95          95
  25 #define SW_RIGHT_GPIO96         96
  26 #define SW_ESC_GPIO97           97
  27
  28 static struct gpio_keys_button apollon_gpio_keys_buttons[] = {
  29         [0] = {
  30                 .code           = KEY_ENTER,
  31                 .gpio           = SW_ENTER_GPIO16,
  32                 .desc           = "enter sw",
  33         },
  34         [1] = {
  35                 .code           = KEY_UP,
  36                 .gpio           = SW_UP_GPIO17,
  37                 .desc           = "up sw",
  38         },
  39         [2] = {
  40                 .code           = KEY_DOWN,
  41                 .gpio           = SW_DOWN_GPIO58,
  42                 .desc           = "down sw",
  43         },
  44 #ifdef CONFIG_MACH_OMAP_APOLLON_PLUS
  45         [3] = {
  46                 .code           = KEY_LEFT,
  47                 .gpio           = SW_LEFT_GPIO95,
  48                 .desc           = "left sw",
  49         },
  50         [4] = {
  51                 .code           = KEY_RIGHT,
  52                 .gpio           = SW_RIGHT_GPIO96,
  53                 .desc           = "right sw",
  54         },
  55         [5] = {
  56                 .code           = KEY_ESC,
  57                 .gpio           = SW_ESC_GPIO97,
  58                 .desc           = "esc sw",
  59         },
  60 #endif
  61 };
  62
  63 static struct gpio_keys_platform_data apollon_gpio_keys = {
  64         .buttons                = apollon_gpio_keys_buttons,
  65         .nbuttons               = ARRAY_SIZE(apollon_gpio_keys_buttons),
  66 };
  67
  68 static struct platform_device apollon_gpio_keys_device = {
  69         .name                   = "gpio-keys",
  70         .id                     = -1,
  71         .dev                    = {
  72                 .platform_data  = &apollon_gpio_keys,
  73         },
  74 };
  75
  76 static void __init apollon_sw_init(void)
  77 {
  78         /* Enter SW - Y11 */
  79         omap_cfg_reg(Y11_242X_GPIO16);
  80         omap_request_gpio(SW_ENTER_GPIO16);
  81         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
  82         /* Up SW - AA12 */
  83         omap_cfg_reg(AA12_242X_GPIO17);
  84         omap_request_gpio(SW_UP_GPIO17);
  85         omap_set_gpio_direction(SW_UP_GPIO17, 1);
  86         /* Down SW - AA8 */
  87         omap_cfg_reg(AA8_242X_GPIO58);
  88         omap_request_gpio(SW_DOWN_GPIO58);
  89         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
  90 #ifdef CONFIG_MACH_OMAP_APOLLON_PLUS
  91         /* Left SW - P18 */
  92         omap_cfg_reg(P18_24XX_GPIO95);
  93         omap_request_gpio(SW_LEFT_GPIO95);
  94         omap_set_gpio_direction(SW_LEFT_GPIO95, 1);
  95         /* Right SW - M18 */
  96         omap_cfg_reg(M18_24XX_GPIO96);
  97         omap_request_gpio(SW_RIGHT_GPIO96);
  98         omap_set_gpio_direction(SW_RIGHT_GPIO96, 1);
  99         /* Esc SW - L14 */
 100         omap_cfg_reg(L14_24XX_GPIO97);
 101         omap_request_gpio(SW_ESC_GPIO97);
 102         omap_set_gpio_direction(SW_ESC_GPIO97, 1);
 103 #endif
 104 }
 105
 106 static int __init omap_apollon_keys_init(void)
 107 {
 108         apollon_sw_init();
 109
 110         return platform_device_register(&apollon_gpio_keys_device);
 111 }
 112
 113 arch_initcall(omap_apollon_keys_init);