1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _GPIO_KEYS_H
3 #define _GPIO_KEYS_H
4
5 #include <linux/types.h>
6
7 struct device;
8
9 /**
10 * struct gpio_keys_button - configuration parameters
11 * @code: input event code (KEY_*, SW_*)
12 * @gpio: %-1 if this key does not support gpio
13 * @active_low: %true indicates that button is considered
14 * depressed when gpio is low
15 * @desc: label that will be attached to button's gpio
16 * @type: input event type (%EV_KEY, %EV_SW, %EV_ABS)
17 * @wakeup: configure the button as a wake-up source
18 * @wakeup_event_action: event action to trigger wakeup
19 * @debounce_interval: debounce ticks interval in msecs
20 * @can_disable: %true indicates that userspace is allowed to
21 * disable button via sysfs
22 * @value: axis value for %EV_ABS
23 * @irq: Irq number in case of interrupt keys
24 */
25 struct gpio_keys_button {
26 unsigned int code;
27 int gpio;
28 int active_low;
29 const char *desc;
30 unsigned int type;
31 int wakeup;
32 int wakeup_event_action;
33 int debounce_interval;
34 bool can_disable;
35 int value;
36 unsigned int irq;
37 };
38
39 /**
40 * struct gpio_keys_platform_data - platform data for gpio_keys driver
41 * @buttons: pointer to array of &gpio_keys_button structures
42 * describing buttons attached to the device
43 * @nbuttons: number of elements in @buttons array
44 * @poll_interval: polling interval in msecs - for polling driver only
45 * @rep: enable input subsystem auto repeat
46 * @enable: platform hook for enabling the device
47 * @disable: platform hook for disabling the device
48 * @name: input device name
49 */
50 struct gpio_keys_platform_data {
51 const struct gpio_keys_button *buttons;
52 int nbuttons;
53 unsigned int poll_interval;
54 unsigned int rep:1;
55 int (*enable)(struct device *dev);
56 void (*disable)(struct device *dev);
57 const char *name;
58 };
59
60 #endif