Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / char / nwbutton.h
blobf2b9fdc1f9ead5cf3109ff6b7d6ec75227d6232b
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NWBUTTON_H
3 #define __NWBUTTON_H
5 /*
6 * NetWinder Button Driver-
7 * Copyright (C) Alex Holden <alex@linuxhacker.org> 1998, 1999.
8 */
10 #ifdef __NWBUTTON_C /* Actually compiling the driver itself */
12 /* Various defines: */
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 */
18 /* Structure definitions: */
20 struct button_callback {
21 void (*callback) (void);
22 int count;
25 /* Function prototypes: */
27 static void button_sequence_finished(struct timer_list *unused);
28 static irqreturn_t button_handler (int irq, void *dev_id);
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);
34 #else /* Not compiling the driver itself */
36 extern int button_add_callback (void (*callback) (void), int count);
37 extern int button_del_callback (void (*callback) (void));
39 #endif /* __NWBUTTON_C */
40 #endif /* __NWBUTTON_H */