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| /*
| * platform_gpio_keys.c: gpio_keys platform data initialization file
| *
| * (C) Copyright 2013 Intel Corporation
| * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com>
| *
| * This program is free software; you can redistribute it and/or
| * modify it under the terms of the GNU General Public License
| * as published by the Free Software Foundation; version 2
| * of the License.
| */
|
| #include <linux/input.h>
| #include <linux/init.h>
| #include <linux/kernel.h>
| #include <linux/gpio.h>
| #include <linux/gpio_keys.h>
| #include <linux/platform_device.h>
| #include <asm/intel-mid.h>
|
| #define DEVICE_NAME "gpio-keys"
|
| /*
| * we will search these buttons in SFI GPIO table (by name)
| * and register them dynamically. Please add all possible
| * buttons here, we will shrink them if no GPIO found.
| */
| static struct gpio_keys_button gpio_button[] = {
| {KEY_POWER, -1, 1, "power_btn", EV_KEY, 0, 3000},
| {KEY_PROG1, -1, 1, "prog_btn1", EV_KEY, 0, 20},
| {KEY_PROG2, -1, 1, "prog_btn2", EV_KEY, 0, 20},
| {SW_LID, -1, 1, "lid_switch", EV_SW, 0, 20},
| {KEY_VOLUMEUP, -1, 1, "vol_up", EV_KEY, 0, 20},
| {KEY_VOLUMEDOWN, -1, 1, "vol_down", EV_KEY, 0, 20},
| {KEY_MUTE, -1, 1, "mute_enable", EV_KEY, 0, 20},
| {KEY_VOLUMEUP, -1, 1, "volume_up", EV_KEY, 0, 20},
| {KEY_VOLUMEDOWN, -1, 1, "volume_down", EV_KEY, 0, 20},
| {KEY_CAMERA, -1, 1, "camera_full", EV_KEY, 0, 20},
| {KEY_CAMERA_FOCUS, -1, 1, "camera_half", EV_KEY, 0, 20},
| {SW_KEYPAD_SLIDE, -1, 1, "MagSw1", EV_SW, 0, 20},
| {SW_KEYPAD_SLIDE, -1, 1, "MagSw2", EV_SW, 0, 20},
| };
|
| static struct gpio_keys_platform_data gpio_keys = {
| .buttons = gpio_button,
| .rep = 1,
| .nbuttons = -1, /* will fill it after search */
| };
|
| static struct platform_device pb_device = {
| .name = DEVICE_NAME,
| .id = -1,
| .dev = {
| .platform_data = &gpio_keys,
| },
| };
|
| /*
| * Shrink the non-existent buttons, register the gpio button
| * device if there is some
| */
| static int __init pb_keys_init(void)
| {
| struct gpio_keys_button *gb = gpio_button;
| int i, good = 0;
|
| for (i = 0; i < ARRAY_SIZE(gpio_button); i++) {
| gb[i].gpio = get_gpio_by_name(gb[i].desc);
| pr_debug("info[%2d]: name = %s, gpio = %d\n", i, gb[i].desc,
| gb[i].gpio);
| if (gb[i].gpio < 0)
| continue;
|
| if (i != good)
| gb[good] = gb[i];
| good++;
| }
|
| if (good) {
| gpio_keys.nbuttons = good;
| return platform_device_register(&pb_device);
| }
| return 0;
| }
| late_initcall(pb_keys_init);
|
|
