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
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);
28 static void button_handler (int irq, void *dev_id, struct pt_regs *regs);
29 static int button_read (struct file *filp, char *buffer,
30 size_t count, loff_t *ppos);
31 int button_init (void);
32 int button_add_callback (void (*callback) (void), int count);
33 int button_del_callback (void (*callback) (void));
34 static void button_consume_callbacks (int bpcount);
35 #ifdef MODULE
36 int init_module (void);
37 void cleanup_module (void);
38 #endif /* MODULE */
39
40 #else /* Not compiling the driver itself */
41
42 extern int button_add_callback (void (*callback) (void), int count);
43 extern int button_del_callback (void (*callback) (void));
44
45 #endif /* __NWBUTTON_C */
46 #endif /* __NWBUTTON_H */
47
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.