[linux.git] / drivers / char / nwbutton.h

#ifndef __NWBUTTON_H
#define __NWBUTTON_H

/*
 * 	NetWinder Button Driver-
 *	Copyright (C) Alex Holden <[email protected]> 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 */
Commit	Line	Data
1da177e4 LT	1	#ifndef __NWBUTTON_H
	2	#define __NWBUTTON_H
	3
	4	/*
	5	* NetWinder Button Driver-
	6	* Copyright (C) Alex Holden <[email protected]> 1998, 1999.
	7	*/
	8
	9	#ifdef __NWBUTTON_C /* Actually compiling the driver itself */
	10
	11	/* Various defines: */
	12
	13	#define NUM_PRESSES_REBOOT 2 /* How many presses to activate shutdown */
	14	#define BUTTON_DELAY 30 /* How many jiffies for sequence to end */
	15	#define VERSION "0.3" /* Driver version number */
	16	#define BUTTON_MINOR 158 /* Major 10, Minor 158, /dev/nwbutton */
	17
	18	/* Structure definitions: */
	19
	20	struct button_callback {
	21	void (*callback) (void);
	22	int count;
	23	};
	24
	25	/* Function prototypes: */
	26
	27	static void button_sequence_finished (unsigned long parameters);
7d12e780	28	static irqreturn_t button_handler (int irq, void *dev_id);
1da177e4 LT	29	int button_init (void);
	30	int button_add_callback (void (*callback) (void), int count);
	31	int button_del_callback (void (*callback) (void));
	32	static void button_consume_callbacks (int bpcount);
	33
	34	#else /* Not compiling the driver itself */
	35
	36	extern int button_add_callback (void (*callback) (void), int count);
	37	extern int button_del_callback (void (*callback) (void));
	38
	39	#endif /* __NWBUTTON_C */
	40	#endif /* __NWBUTTON_H */