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 * @wakeirq: Optional dedicated wake-up interrupt
25 */
26 struct gpio_keys_button {
27 unsigned int code;
28 int gpio;
29 int active_low;
30 const char *desc;
31 unsigned int type;
32 int wakeup;
33 int wakeup_event_action;
34 int debounce_interval;
35 bool can_disable;
36 int value;
37 unsigned int irq;
38 unsigned int wakeirq;
39 };
40
41 /**
42 * struct gpio_keys_platform_data - platform data for gpio_keys driver
43 * @buttons: pointer to array of &gpio_keys_button structures
44 * describing buttons attached to the device
45 * @nbuttons: number of elements in @buttons array
46 * @poll_interval: polling interval in msecs - for polling driver only
47 * @rep: enable input subsystem auto repeat
48 * @enable: platform hook for enabling the device
49 * @disable: platform hook for disabling the device
50 * @name: input device name
51 */
52 struct gpio_keys_platform_data {
53 const struct gpio_keys_button *buttons;
54 int nbuttons;
55 unsigned int poll_interval;
56 unsigned int rep:1;
57 int (*enable)(struct device *dev);
58 void (*disable)(struct device *dev);
59 const char *name;
60 };
61
62 #endif
63
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