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 */ 35struct 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 47struct key_entry *sparse_keymap_entry_from_scancode(struct input_dev *dev, 48 unsigned int code); 49struct key_entry *sparse_keymap_entry_from_keycode(struct input_dev *dev, 50 unsigned int code); 51int sparse_keymap_setup(struct input_dev *dev, 52 const struct key_entry *keymap, 53 int (*setup)(struct input_dev *, struct key_entry *)); 54void sparse_keymap_free(struct input_dev *dev); 55 56void sparse_keymap_report_entry(struct input_dev *dev, const struct key_entry *ke, 57 unsigned int value, bool autorelease); 58 59bool sparse_keymap_report_event(struct input_dev *dev, unsigned int code, 60 unsigned int value, bool autorelease); 61 62#endif /* _SPARSE_KEYMAP_H */ 63