1#ifndef __NWBUTTON_H
 2#define __NWBUTTON_H
 3
 4/*
 5 * 	NetWinder Button Driver-
 6 *	Copyright (C) Alex Holden <alex@linuxhacker.org> 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
20struct button_callback {
21	void (*callback) (void);
22	int count;
23};
24
25/* Function prototypes: */
26
27static void button_sequence_finished (unsigned long parameters);
28static irqreturn_t button_handler (int irq, void *dev_id);
29int button_init (void);
30int button_add_callback (void (*callback) (void), int count);
31int button_del_callback (void (*callback) (void));
32static void button_consume_callbacks (int bpcount);
33
34#else /* Not compiling the driver itself */
35
36extern int button_add_callback (void (*callback) (void), int count);
37extern int button_del_callback (void (*callback) (void));
38
39#endif /* __NWBUTTON_C */
40#endif /* __NWBUTTON_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __NWBUTTON_H
 3#define __NWBUTTON_H
 4
 5/*
 6 * 	NetWinder Button Driver-
 7 *	Copyright (C) Alex Holden <alex@linuxhacker.org> 1998, 1999.
 8 */
 9
10#ifdef __NWBUTTON_C	/* Actually compiling the driver itself */
11
12/* Various defines: */
13
14#define NUM_PRESSES_REBOOT 2	/* How many presses to activate shutdown */
15#define BUTTON_DELAY 30 	/* How many jiffies for sequence to end */
16#define VERSION "0.3"		/* Driver version number */
 
17
18/* Structure definitions: */
19
20struct button_callback {
21	void (*callback) (void);
22	int count;
23};
24
25/* Function prototypes: */
26
27static void button_sequence_finished(struct timer_list *unused);
28static irqreturn_t button_handler (int irq, void *dev_id);
29int button_init (void);
30int button_add_callback (void (*callback) (void), int count);
31int button_del_callback (void (*callback) (void));
32static void button_consume_callbacks (int bpcount);
33
34#else /* Not compiling the driver itself */
35
36extern int button_add_callback (void (*callback) (void), int count);
37extern int button_del_callback (void (*callback) (void));
38
39#endif /* __NWBUTTON_C */
40#endif /* __NWBUTTON_H */