| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef __NWBUTTON_H |
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| 3 | #define __NWBUTTON_H |
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| 4 | |
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| 5 | /* |
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| 6 | * NetWinder Button Driver- |
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| 7 | * Copyright (C) Alex Holden <alex@linuxhacker.org> 1998, 1999. |
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| 8 | */ |
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| 9 | |
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| 10 | #ifdef __NWBUTTON_C /* Actually compiling the driver itself */ |
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| 11 | |
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| 12 | /* Various defines: */ |
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| 13 | |
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| 14 | #define NUM_PRESSES_REBOOT 2 /* How many presses to activate shutdown */ |
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| 15 | #define BUTTON_DELAY 30 /* How many jiffies for sequence to end */ |
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| 16 | #define VERSION "0.3" /* Driver version number */ |
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| 17 | |
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| 18 | /* Structure definitions: */ |
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| 19 | |
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| 20 | struct button_callback { |
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| 21 | void (*callback) (void); |
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| 22 | int count; |
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| 23 | }; |
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| 24 | |
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| 25 | /* Function prototypes: */ |
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| 26 | |
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| 27 | static void button_sequence_finished(struct timer_list *unused); |
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| 28 | static irqreturn_t button_handler (int irq, void *dev_id); |
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| 29 | int button_init (void); |
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| 30 | int button_add_callback (void (*callback) (void), int count); |
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| 31 | int button_del_callback (void (*callback) (void)); |
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| 32 | static void button_consume_callbacks (int bpcount); |
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| 33 | |
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| 34 | #else /* Not compiling the driver itself */ |
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| 35 | |
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| 36 | extern int button_add_callback (void (*callback) (void), int count); |
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| 37 | extern int button_del_callback (void (*callback) (void)); |
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| 38 | |
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| 39 | #endif /* __NWBUTTON_C */ |
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| 40 | #endif /* __NWBUTTON_H */ |
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| 41 | |
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