gpio_keys.h (1782B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _GPIO_KEYS_H 3#define _GPIO_KEYS_H 4 5#include <linux/types.h> 6 7struct 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 */ 25struct 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 */ 50struct 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