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