blob: 2e3fcf205b9b47d0bc39b26e420f4dd25f5889e6 [file] [log] [blame]
/* Copyright 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);
/* 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
/**
* Returns true if keyboard backlight is present/detected.
*/
int board_has_keyboard_backlight(void);
#endif /* __CROS_EC_KEYBOARD_PROTOCOL_H */