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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
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 */ | |
1da177e4 LT |
17 | |
18 | /* Structure definitions: */ | |
19 | ||
20 | struct button_callback { | |
21 | void (*callback) (void); | |
22 | int count; | |
23 | }; | |
24 | ||
25 | /* Function prototypes: */ | |
26 | ||
24ed960a | 27 | static void button_sequence_finished(struct timer_list *unused); |
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 */ |