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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Keyboard protocol interface
*/
#ifndef __CROS_EC_KEYBOARD_PROTOCOL_H
#define __CROS_EC_KEYBOARD_PROTOCOL_H
#include "common.h"
#include "button.h"
/* Routines common to all protocols */
/**
* Clear the keyboard buffer to host.
*/
void keyboard_clear_buffer(void);
/*
* Respond to button changes. Implemented by a host-specific
* handler.
*
* @param button The button that changed.
* @param is_pressed Whether the button is now pressed.
*/
void keyboard_update_button(enum keyboard_button_type button, int is_pressed);
/*
* Get the state of supported buttons.
*/
uint32_t keyboard_get_button_state(void);
#ifdef CONFIG_KEYBOARD_DYNAMIC_MAPPING
/* Values to select scancode mapping (need CONFIG_KEYBOARD_DYNAMIC_MAPPING) */
enum keyboard_mapping_type {
KEYBOARD_MAPPING_CHROMEOS = 0,
KEYBOARD_MAPPING_LEGACY,
KEYBOARD_MAPPING_INVALID,
KEYBOARD_MAPPING_DEFAULT = KEYBOARD_MAPPING_CHROMEOS
};
/**
* Select and change keyboard mapping.
*
* @param mapping The type of mapping (keyboard_mapping_type).
*/
void keyboard_select_mapping(enum keyboard_mapping_type mapping);
/**
* Board-specific callback when keyboard mapping is changed.
*
* @param new_mapping The type of mapping to apply (keyboard_mapping_type).
*/
void keyboard_board_mapping_changed(enum keyboard_mapping_type new_mapping);
#endif
/* Protocol-specific includes */
#ifdef CONFIG_KEYBOARD_PROTOCOL_8042
#include "keyboard_8042.h"
#endif
#ifdef CONFIG_KEYBOARD_PROTOCOL_MKBP
#include "keyboard_mkbp.h"
/* MKBP protocol takes the whole keyboard matrix, and does not care about
* individual key presses.
*/
static inline void keyboard_state_changed(int row, int col, int is_pressed) {}
#else
/**
* Called by keyboard scan code once any key state change (after de-bounce),
*
* This function will look up matrix table and convert scancode host.
*/
void keyboard_state_changed(int row, int col, int is_pressed);
#endif
#endif /* __CROS_EC_KEYBOARD_PROTOCOL_H */
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