#ifndef __NWBUTTON_H
  #define __NWBUTTON_H
  
  /*
   * 	NetWinder Button Driver-
   *	Copyright (C) Alex Holden <alex@linuxhacker.org> 1998, 1999.
   */
  
  #ifdef __NWBUTTON_C	/* Actually compiling the driver itself */
  
  /* Various defines: */
  
  #define NUM_PRESSES_REBOOT 2	/* How many presses to activate shutdown */
  #define BUTTON_DELAY 30 	/* How many jiffies for sequence to end */
  #define VERSION "0.3"		/* Driver version number */
  #define BUTTON_MINOR 158	/* Major 10, Minor 158, /dev/nwbutton */
  
  /* Structure definitions: */
  
  struct button_callback {
  	void (*callback) (void);
  	int count;
  };
  
  /* Function prototypes: */
  
  static void button_sequence_finished (unsigned long parameters);

  static irqreturn_t button_handler (int irq, void *dev_id);

  int button_init (void);
  int button_add_callback (void (*callback) (void), int count);
  int button_del_callback (void (*callback) (void));
  static void button_consume_callbacks (int bpcount);
  
  #else /* Not compiling the driver itself */
  
  extern int button_add_callback (void (*callback) (void), int count);
  extern int button_del_callback (void (*callback) (void));
  
  #endif /* __NWBUTTON_C */
  #endif /* __NWBUTTON_H */