projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ | |
| 17 | #define BUTTON_MINOR 158 /* Major 10, Minor 158, /dev/nwbutton */ | |
| 18 | ||
| 19 | /* Structure definitions: */ | |
| 20 | ||
| 21 | struct button_callback { | |
| 22 | void (*callback) (void); | |
| 23 | int count; | |
| 24 | }; | |
| 25 | ||
| 26 | /* Function prototypes: */ | |
| 27 | ||
| 28 | static void button_sequence_finished (unsigned long parameters); | |
| 7d12e780 | 29 | static irqreturn_t button_handler (int irq, void *dev_id); |
| 1da177e4 LT |
30 | int button_init (void); |
| 31 | int button_add_callback (void (*callback) (void), int count); | |
| 32 | int button_del_callback (void (*callback) (void)); | |
| 33 | static void button_consume_callbacks (int bpcount); | |
| 34 | ||
| 35 | #else /* Not compiling the driver itself */ | |
| 36 | ||
| 37 | extern int button_add_callback (void (*callback) (void), int count); | |
| 38 | extern int button_del_callback (void (*callback) (void)); | |
| 39 | ||
| 40 | #endif /* __NWBUTTON_C */ | |
| 41 | #endif /* __NWBUTTON_H */ |