projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b886d83c | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 40a96d54 | 2 | /* |
| 6a6256f9 | 3 | * platform_gpio_keys.c: gpio_keys platform data initialization file |
| 40a96d54 DC |
4 | * |
| 5 | * (C) Copyright 2013 Intel Corporation | |
| 6 | * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com> | |
| 40a96d54 DC |
7 | */ |
| 8 | ||
| 9 | #include <linux/input.h> | |
| 10 | #include <linux/init.h> | |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/gpio.h> | |
| 13 | #include <linux/gpio_keys.h> | |
| 14 | #include <linux/platform_device.h> | |
| 15 | #include <asm/intel-mid.h> | |
| 16 | ||
| 17 | #define DEVICE_NAME "gpio-keys" | |
| 18 | ||
| 19 | /* | |
| 20 | * we will search these buttons in SFI GPIO table (by name) | |
| 21 | * and register them dynamically. Please add all possible | |
| 22 | * buttons here, we will shrink them if no GPIO found. | |
| 23 | */ | |
| 24 | static struct gpio_keys_button gpio_button[] = { | |
| 25 | {KEY_POWER, -1, 1, "power_btn", EV_KEY, 0, 3000}, | |
| 26 | {KEY_PROG1, -1, 1, "prog_btn1", EV_KEY, 0, 20}, | |
| 27 | {KEY_PROG2, -1, 1, "prog_btn2", EV_KEY, 0, 20}, | |
| 28 | {SW_LID, -1, 1, "lid_switch", EV_SW, 0, 20}, | |
| 29 | {KEY_VOLUMEUP, -1, 1, "vol_up", EV_KEY, 0, 20}, | |
| 30 | {KEY_VOLUMEDOWN, -1, 1, "vol_down", EV_KEY, 0, 20}, | |
| ecc7ea5d AS |
31 | {KEY_MUTE, -1, 1, "mute_enable", EV_KEY, 0, 20}, |
| 32 | {KEY_VOLUMEUP, -1, 1, "volume_up", EV_KEY, 0, 20}, | |
| 33 | {KEY_VOLUMEDOWN, -1, 1, "volume_down", EV_KEY, 0, 20}, | |
| 40a96d54 DC |
34 | {KEY_CAMERA, -1, 1, "camera_full", EV_KEY, 0, 20}, |
| 35 | {KEY_CAMERA_FOCUS, -1, 1, "camera_half", EV_KEY, 0, 20}, | |
| 36 | {SW_KEYPAD_SLIDE, -1, 1, "MagSw1", EV_SW, 0, 20}, | |
| 37 | {SW_KEYPAD_SLIDE, -1, 1, "MagSw2", EV_SW, 0, 20}, | |
| 38 | }; | |
| 39 | ||
| 40 | static struct gpio_keys_platform_data gpio_keys = { | |
| 41 | .buttons = gpio_button, | |
| 42 | .rep = 1, | |
| 43 | .nbuttons = -1, /* will fill it after search */ | |
| 44 | }; | |
| 45 | ||
| 46 | static struct platform_device pb_device = { | |
| 47 | .name = DEVICE_NAME, | |
| 48 | .id = -1, | |
| 49 | .dev = { | |
| 50 | .platform_data = &gpio_keys, | |
| 51 | }, | |
| 52 | }; | |
| 53 | ||
| 54 | /* | |
| 55 | * Shrink the non-existent buttons, register the gpio button | |
| 56 | * device if there is some | |
| 57 | */ | |
| 58 | static int __init pb_keys_init(void) | |
| 59 | { | |
| 60 | struct gpio_keys_button *gb = gpio_button; | |
| 0cfe5b5f | 61 | int i, good = 0; |
| 40a96d54 | 62 | |
| 0cfe5b5f | 63 | for (i = 0; i < ARRAY_SIZE(gpio_button); i++) { |
| 40a96d54 DC |
64 | gb[i].gpio = get_gpio_by_name(gb[i].desc); |
| 65 | pr_debug("info[%2d]: name = %s, gpio = %d\n", i, gb[i].desc, | |
| 66 | gb[i].gpio); | |
| a957a14b | 67 | if (gb[i].gpio < 0) |
| 40a96d54 DC |
68 | continue; |
| 69 | ||
| 70 | if (i != good) | |
| 71 | gb[good] = gb[i]; | |
| 72 | good++; | |
| 73 | } | |
| 74 | ||
| 75 | if (good) { | |
| 76 | gpio_keys.nbuttons = good; | |
| 77 | return platform_device_register(&pb_device); | |
| 78 | } | |
| 79 | return 0; | |
| 80 | } | |
| 81 | late_initcall(pb_keys_init); |