Release 4.17 include/linux/gpio_keys.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _GPIO_KEYS_H

#define _GPIO_KEYS_H

struct device;

/**
 * struct gpio_keys_button - configuration parameters
 * @code:               input event code (KEY_*, SW_*)
 * @gpio:               %-1 if this key does not support gpio
 * @active_low:         %true indicates that button is considered
 *                      depressed when gpio is low
 * @desc:               label that will be attached to button's gpio
 * @type:               input event type (%EV_KEY, %EV_SW, %EV_ABS)
 * @wakeup:             configure the button as a wake-up source
 * @wakeup_event_action:        event action to trigger wakeup
 * @debounce_interval:  debounce ticks interval in msecs
 * @can_disable:        %true indicates that userspace is allowed to
 *                      disable button via sysfs
 * @value:              axis value for %EV_ABS
 * @irq:                Irq number in case of interrupt keys
 */

struct gpio_keys_button {
	
unsigned int code;
	
int gpio;
	
int active_low;
	
const char *desc;
	
unsigned int type;
	
int wakeup;
	
int wakeup_event_action;
	
int debounce_interval;
	
bool can_disable;
	
int value;
	
unsigned int irq;
};

/**
 * struct gpio_keys_platform_data - platform data for gpio_keys driver
 * @buttons:            pointer to array of &gpio_keys_button structures
 *                      describing buttons attached to the device
 * @nbuttons:           number of elements in @buttons array
 * @poll_interval:      polling interval in msecs - for polling driver only
 * @rep:                enable input subsystem auto repeat
 * @enable:             platform hook for enabling the device
 * @disable:            platform hook for disabling the device
 * @name:               input device name
 */

struct gpio_keys_platform_data {
	
const struct gpio_keys_button *buttons;
	
int nbuttons;
	
unsigned int poll_interval;
	
unsigned int rep:1;
	
int (*enable)(struct device *dev);
	
void (*disable)(struct device *dev);
	
const char *name;
};

#endif
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Directory: include/linux

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