#ifndef _SPARSE_KEYMAP_H#define _SPARSE_KEYMAP_H /* * Copyright (c) 2009 Dmitry Torokhov * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #define KE_END		0	/* Indicates end of keymap */#define KE_KEY		1	/* Ordinary key/button */#define KE_SW		2	/* Switch (predetermined value) */#define KE_VSW		3	/* Switch (value supplied at runtime) */#define KE_IGNORE	4	/* Known entry that should be ignored */#define KE_LAST		KE_IGNORE /** * struct key_entry - keymap entry for use in sparse keymap * @type: Type of the key entry (KE_KEY, KE_SW, KE_VSW, KE_END); *	drivers are allowed to extend the list with their own *	private definitions. * @code: Device-specific data identifying the button/switch * @keycode: KEY_* code assigned to a key/button * @sw.code: SW_* code assigned to a switch * @sw.value: Value that should be sent in an input even when KE_SW *	switch is toggled. KE_VSW switches ignore this field and *	expect driver to supply value for the event. * * This structure defines an entry in a sparse keymap used by some * input devices for which traditional table-based approach is not * suitable. */struct key_entry {	int type;		/* See KE_* above */	u32 code;	union {		u16 keycode;		/* For KE_KEY */		struct {		/* For KE_SW, KE_VSW */			u8 code;			u8 value;	/* For KE_SW, ignored by KE_VSW */		} sw;	};}; struct key_entry *sparse_keymap_entry_from_scancode(struct input_dev *dev,						    unsigned int code);struct key_entry *sparse_keymap_entry_from_keycode(struct input_dev *dev,						   unsigned int code);int sparse_keymap_setup(struct input_dev *dev,			const struct key_entry *keymap,			int (*setup)(struct input_dev *, struct key_entry *));void sparse_keymap_free(struct input_dev *dev); void sparse_keymap_report_entry(struct input_dev *dev, const struct key_entry *ke,				unsigned int value, bool autorelease); bool sparse_keymap_report_event(struct input_dev *dev, unsigned int code,				unsigned int value, bool autorelease); #endif /* _SPARSE_KEYMAP_H */