| /* SPDX-License-Identifier: GPL-2.0 */ |
| #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(struct timer_list *unused); |
| static irqreturn_t button_handler (int irq, void *dev_id); |
| 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); |
| |
| #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 */ |
