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