blob: ba50674437c5d7b19db43a08f2c92825a3a31b1c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#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 void button_handler (int irq, void *dev_id, struct pt_regs *regs);
static int button_read (struct file *filp, char *buffer,
size_t count, loff_t *ppos);
static int button_open (struct inode *inode, struct file *filp);
static int button_release (struct inode *inode, struct file *filp);
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);
#ifdef MODULE
int init_module (void);
void cleanup_module (void);
#endif /* MODULE */
#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 */
|
