/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _SPARSE_KEYMAP_H
#define _SPARSE_KEYMAP_H
/*
* Copyright ( c ) 2009 Dmitry Torokhov
*/
#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 : struct with code / value used by KE_SW and KE_VSW
* @ 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_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 */
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