| Dmitry Torokhov | 36203c4 | 2009-12-04 10:22:23 -0800 | [diff] [blame] | 1 | #ifndef _SPARSE_KEYMAP_H |
| 2 | #define _SPARSE_KEYMAP_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 2009 Dmitry Torokhov |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #define KE_END 0 /* Indicates end of keymap */ |
| 13 | #define KE_KEY 1 /* Ordinary key/button */ |
| 14 | #define KE_SW 2 /* Switch (predetermined value) */ |
| 15 | #define KE_VSW 3 /* Switch (value supplied at runtime) */ |
| 16 | #define KE_IGNORE 4 /* Known entry that should be ignored */ |
| 17 | #define KE_LAST KE_IGNORE |
| 18 | |
| 19 | /** |
| 20 | * struct key_entry - keymap entry for use in sparse keymap |
| 21 | * @type: Type of the key entry (KE_KEY, KE_SW, KE_VSW, KE_END); |
| 22 | * drivers are allowed to extend the list with their own |
| 23 | * private definitions. |
| 24 | * @code: Device-specific data identifying the button/switch |
| 25 | * @keycode: KEY_* code assigned to a key/button |
| 26 | * @sw.code: SW_* code assigned to a switch |
| 27 | * @sw.value: Value that should be sent in an input even when KE_SW |
| 28 | * switch is toggled. KE_VSW switches ignore this field and |
| 29 | * expect driver to supply value for the event. |
| 30 | * |
| 31 | * This structure defines an entry in a sparse keymap used by some |
| 32 | * input devices for which traditional table-based approach is not |
| 33 | * suitable. |
| 34 | */ |
| 35 | struct key_entry { |
| 36 | int type; /* See KE_* above */ |
| 37 | u32 code; |
| 38 | union { |
| 39 | u16 keycode; /* For KE_KEY */ |
| 40 | struct { /* For KE_SW, KE_VSW */ |
| 41 | u8 code; |
| 42 | u8 value; /* For KE_SW, ignored by KE_VSW */ |
| 43 | } sw; |
| 44 | }; |
| 45 | }; |
| 46 | |
| 47 | struct key_entry *sparse_keymap_entry_from_scancode(struct input_dev *dev, |
| 48 | unsigned int code); |
| 49 | struct key_entry *sparse_keymap_entry_from_keycode(struct input_dev *dev, |
| 50 | unsigned int code); |
| 51 | int sparse_keymap_setup(struct input_dev *dev, |
| 52 | const struct key_entry *keymap, |
| 53 | int (*setup)(struct input_dev *, struct key_entry *)); |
| 54 | void sparse_keymap_free(struct input_dev *dev); |
| 55 | |
| 56 | void sparse_keymap_report_entry(struct input_dev *dev, const struct key_entry *ke, |
| 57 | unsigned int value, bool autorelease); |
| 58 | |
| 59 | bool sparse_keymap_report_event(struct input_dev *dev, unsigned int code, |
| 60 | unsigned int value, bool autorelease); |
| 61 | |
| 62 | #endif /* _SPARSE_KEYMAP_H */ |