#ifndef _GPIO_KEYS_H
  #define _GPIO_KEYS_H
  
  struct device;
  
  struct gpio_keys_button {
  	/* Configuration parameters */
  	unsigned int code;	/* input event code (KEY_*, SW_*) */
  	int gpio;		/* -1 if this key does not support gpio */
  	int active_low;
  	const char *desc;
  	unsigned int type;	/* input event type (EV_KEY, EV_SW, EV_ABS) */
  	int wakeup;		/* configure the button as a wake-up source */
  	int debounce_interval;	/* debounce ticks interval in msecs */
  	bool can_disable;
  	int value;		/* axis value for EV_ABS */
  	unsigned int irq;	/* Irq number in case of interrupt keys */
  };
  
  struct gpio_keys_platform_data {
  	struct gpio_keys_button *buttons;
  	int nbuttons;
  	unsigned int poll_interval;	/* polling interval in msecs -
  					   for polling driver only */
  	unsigned int rep:1;		/* enable input subsystem auto repeat */
  	int (*enable)(struct device *dev);
  	void (*disable)(struct device *dev);
  	const char *name;		/* input device name */
  };
  
  #endif