arch/arm/mach-tegra/board-cardhu-kbc.c

   1 /*
   2  * arch/arm/mach-tegra/board-cardhu-kbc.c
   3  * Keys configuration for Nvidia tegra3 cardhu platform.
   4  *
   5  * Copyright (C) 2011 NVIDIA, Inc.
   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  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19  * 02111-1307, USA
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/input.h>
  25 #include <linux/device.h>
  26 #include <linux/gpio.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/gpio_scrollwheel.h>
  29
  30 #include <mach/irqs.h>
  31 #include <mach/io.h>
  32 #include <mach/iomap.h>
  33 #include <mach/kbc.h>
  34 #include "board.h"
  35 #include "board-cardhu.h"
  36
  37 #include "gpio-names.h"
  38
  39 #ifdef CONFIG_KEYBOARD_TEGRA
  40 #ifdef CONFIG_INPUT_ALPS_GPIO_SCROLLWHEEL
  41 #define CARDHU_ROW_COUNT        3
  42 #define CARDHU_COL_COUNT        2
  43 #else
  44 #define CARDHU_ROW_COUNT        4
  45 #define CARDHU_COL_COUNT        6
  46 #endif
  47
  48 #ifdef CONFIG_INPUT_ALPS_GPIO_SCROLLWHEEL
  49 static int plain_kbd_keycode[] = {
  50         KEY_POWER,      KEY_RESERVED,
  51         KEY_HOME,       KEY_BACK,
  52         KEY_RESERVED,   KEY_RESERVED,
  53 };
  54 #else
  55 static int plain_kbd_keycode[] = {
  56         KEY_POWER,      KEY_RESERVED,   KEY_RESERVED,   KEY_RESERVED,
  57                         KEY_RESERVED,   KEY_RESERVED,   KEY_RESERVED,
  58         KEY_HOME,       KEY_BACK,       KEY_RESERVED,   KEY_RESERVED,
  59                         KEY_RESERVED,   KEY_RESERVED,   KEY_RESERVED,
  60         KEY_CAMERA,     KEY_CAMERA,     KEY_RESERVED,   KEY_RESERVED,
  61                         KEY_RESERVED,   KEY_RESERVED,   KEY_RESERVED,
  62         KEY_VOLUMEDOWN, KEY_VOLUMEUP,   KEY_RESERVED,   KEY_RESERVED,
  63                         KEY_RESERVED,   KEY_RESERVED,   KEY_PAUSE,
  64         KEY_END,        KEY_BACK,       KEY_RESERVED,   KEY_RESERVED,
  65                         KEY_RESERVED,   KEY_PLAY,       KEY_PHONE,
  66 };
  67 #endif
  68 static struct tegra_kbc_wake_key cardhu_wake_cfg[] = {
  69         [0] = {
  70                 .row = 0,
  71                 .col = 0,
  72         },
  73 };
  74
  75 static struct tegra_kbc_platform_data cardhu_kbc_platform_data = {
  76         .debounce_cnt = 20,
  77         .repeat_cnt = 50 * 32,
  78         .scan_timeout_cnt = 3000 * 32,
  79         .plain_keycode = plain_kbd_keycode,
  80         .fn_keycode = NULL,
  81         .is_filter_keys = false,
  82         .is_wake_on_any_key = false,
  83         .wake_key_cnt = 1,
  84         .wake_cfg = &cardhu_wake_cfg[0],
  85 };
  86
  87 static struct resource cardhu_kbc_resources[] = {
  88         [0] = {
  89                 .start = TEGRA_KBC_BASE,
  90                 .end   = TEGRA_KBC_BASE + TEGRA_KBC_SIZE - 1,
  91                 .flags = IORESOURCE_MEM,
  92         },
  93         [1] = {
  94                 .start = INT_KBC,
  95                 .end   = INT_KBC,
  96                 .flags = IORESOURCE_IRQ,
  97         },
  98 };
  99
 100
 101 struct platform_device cardhu_kbc_device = {
 102         .name = "tegra-kbc",
 103         .id = -1,
 104         .dev = {
 105                 .platform_data = &cardhu_kbc_platform_data,
 106         },
 107         .resource = cardhu_kbc_resources,
 108         .num_resources = ARRAY_SIZE(cardhu_kbc_resources),
 109 };
 110
 111 int __init cardhu_kbc_init(void)
 112 {
 113         struct tegra_kbc_platform_data *data = &cardhu_kbc_platform_data;
 114         int i;
 115         struct board_info board_info;
 116
 117         tegra_get_board_info(&board_info);
 118         if ((board_info.board_id == BOARD_E1198) ||
 119                         (board_info.board_id == BOARD_E1291))
 120                 return 0;
 121
 122         pr_info("Registering tegra-kbc\n");
 123          /* Setup the pin configuration information. */
 124         for (i = 0; i < KBC_MAX_GPIO; i++) {
 125                 data->pin_cfg[i].num = 0;
 126                 data->pin_cfg[i].pin_type = kbc_pin_unused;
 127         }
 128         for (i = 0; i < CARDHU_ROW_COUNT; i++) {
 129                 data->pin_cfg[i].num = i;
 130                 data->pin_cfg[i].pin_type = kbc_pin_row;
 131         }
 132
 133         for (i = 0; i < CARDHU_COL_COUNT; i++) {
 134                 data->pin_cfg[i + CARDHU_ROW_COUNT].num = i;
 135                 data->pin_cfg[i + CARDHU_ROW_COUNT].pin_type = kbc_pin_col;
 136         }
 137         platform_device_register(&cardhu_kbc_device);
 138         return 0;
 139 }
 140 #else
 141 int __init cardhu_kbc_init(void)
 142 {
 143 }
 144 #endif
 145
 146 #ifdef CONFIG_INPUT_ALPS_GPIO_SCROLLWHEEL
 147 #define GPIO_SCROLL(_pinaction, _gpio, _desc)           \
 148 {                                                       \
 149         .pinaction = GPIO_SCROLLWHEEL_PIN_##_pinaction, \
 150         .gpio = TEGRA_GPIO_##_gpio,                     \
 151         .desc = _desc,                                  \
 152         .active_low = 1,                                \
 153         .debounce_interval = 2,                         \
 154 }
 155
 156 static struct gpio_scrollwheel_button scroll_keys[] = {
 157         [0] = GPIO_SCROLL(ONOFF, PR3, "sw_onoff"),
 158         [1] = GPIO_SCROLL(PRESS, PQ5, "sw_press"),
 159         [2] = GPIO_SCROLL(ROT1, PQ3, "sw_rot1"),
 160         [3] = GPIO_SCROLL(ROT2, PQ4, "sw_rot2"),
 161 };
 162
 163 static struct gpio_scrollwheel_platform_data cardhu_scroll_platform_data = {
 164         .buttons = scroll_keys,
 165         .nbuttons = ARRAY_SIZE(scroll_keys),
 166 };
 167
 168 static struct platform_device cardhu_scroll_device = {
 169         .name   = "alps-gpio-scrollwheel",
 170         .id     = 0,
 171         .dev    = {
 172                 .platform_data = &cardhu_scroll_platform_data,
 173         },
 174 };
 175
 176 int __init cardhu_scroll_init(void)
 177 {
 178         int i;
 179         struct board_info board_info;
 180
 181         tegra_get_board_info(&board_info);
 182         if ((board_info.board_id == BOARD_E1198) ||
 183                 (board_info.board_id == BOARD_E1291))
 184                 return 0;
 185
 186         pr_info("Registering alps scroll wheel\n");
 187
 188         /* Setting pins to gpio mode */
 189         for (i = 0; i < ARRAY_SIZE(scroll_keys); i++)
 190                 tegra_gpio_enable(scroll_keys[i].gpio);
 191
 192         platform_device_register(&cardhu_scroll_device);
 193         return 0;
 194 }
 195 #else
 196 int __init cardhu_scroll_init(void)
 197 {
 198         return 0;
 199 }
 200 #endif
 201
 202 #ifdef CONFIG_KEYBOARD_GPIO
 203 #define GPIO_KEY(_id, _gpio, _iswake)           \
 204         {                                       \
 205                 .code = _id,                    \
 206                 .gpio = TEGRA_GPIO_##_gpio,     \
 207                 .active_low = 1,                \
 208                 .desc = #_id,                   \
 209                 .type = EV_KEY,                 \
 210                 .wakeup = _iswake,              \
 211                 .debounce_interval = 10,        \
 212         }
 213
 214 static struct gpio_keys_button cardhu_keys_e1198[] = {
 215         [0] = GPIO_KEY(KEY_HOME, PQ0, 0),
 216         [1] = GPIO_KEY(KEY_BACK, PQ1, 0),
 217         [2] = GPIO_KEY(KEY_MENU, PQ2, 0),
 218         [3] = GPIO_KEY(KEY_SEARCH, PQ3, 0),
 219         [4] = GPIO_KEY(KEY_VOLUMEUP, PR0, 0),
 220         [5] = GPIO_KEY(KEY_VOLUMEDOWN, PR1, 0),
 221         [6] = GPIO_KEY(KEY_POWER, PV0, 1),
 222 };
 223
 224 static struct gpio_keys_platform_data cardhu_keys_e1198_platform_data = {
 225         .buttons        = cardhu_keys_e1198,
 226         .nbuttons       = ARRAY_SIZE(cardhu_keys_e1198),
 227 };
 228
 229 static struct platform_device cardhu_keys_e1198_device = {
 230         .name   = "gpio-keys",
 231         .id     = 0,
 232         .dev    = {
 233                 .platform_data  = &cardhu_keys_e1198_platform_data,
 234         },
 235 };
 236
 237 static struct gpio_keys_button cardhu_keys_e1291[] = {
 238         [0] = GPIO_KEY(KEY_MENU, PR0, 0),
 239         [1] = GPIO_KEY(KEY_BACK, PR1, 0),
 240         [2] = GPIO_KEY(KEY_HOME, PR2, 0),
 241         [3] = GPIO_KEY(KEY_SEARCH, PQ3, 0),
 242         [4] = GPIO_KEY(KEY_VOLUMEUP, PQ0, 0),
 243         [5] = GPIO_KEY(KEY_VOLUMEDOWN, PQ1, 0),
 244 };
 245
 246 static struct gpio_keys_platform_data cardhu_keys_e1291_platform_data = {
 247         .buttons        = cardhu_keys_e1291,
 248         .nbuttons       = ARRAY_SIZE(cardhu_keys_e1291),
 249 };
 250
 251 static struct platform_device cardhu_keys_e1291_device = {
 252         .name   = "gpio-keys",
 253         .id     = 0,
 254         .dev    = {
 255                 .platform_data  = &cardhu_keys_e1291_platform_data,
 256         },
 257 };
 258
 259 int __init cardhu_keys_init(void)
 260 {
 261         int i;
 262         int ret;
 263         struct board_info board_info;
 264
 265         tegra_get_board_info(&board_info);
 266         if (!((board_info.board_id == BOARD_E1198) ||
 267                 (board_info.board_id == BOARD_E1291)))
 268                 return 0;
 269
 270         pr_info("Registering gpio keys\n");
 271
 272         if (board_info.board_id == BOARD_E1291) {
 273                 /* Enable gpio mode for other pins */
 274                 for (i = 0; i < ARRAY_SIZE(cardhu_keys_e1291); i++)
 275                         tegra_gpio_enable(cardhu_keys_e1291[i].gpio);
 276
 277                 platform_device_register(&cardhu_keys_e1291_device);
 278                 return 0;
 279         }
 280
 281         /* For E1198 */
 282         for (i = 0; i < ARRAY_SIZE(cardhu_keys_e1198); i++)
 283                 tegra_gpio_enable(cardhu_keys_e1198[i].gpio);
 284
 285         platform_device_register(&cardhu_keys_e1198_device);
 286         return 0;
 287 }
 288 #else
 289 int __init cardhu_keys_init(void)
 290 {
 291         return 0;
 292 }
 293 #endif