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/* Copyright (c) 2012 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 scanner module for Chrome EC */
#ifndef __CROS_EC_KEYBOARD_SCAN_H
#define __CROS_EC_KEYBOARD_SCAN_H
#include "common.h"
/* Initializes the module. */
int keyboard_scan_init(void);
/* Returns non-zero if recovery key was pressed at boot. */
int keyboard_scan_recovery_pressed(void);
/**
* Get the scan data from the keyboard.
*
* This returns the results of the last keyboard scan, by pointing the
* supplied buffer to it, and returning the number of bytes available.
*
* The supplied buffer can be used directly if required, but in that case
* the number of bytes available is limited to 'max_bytes'.
*
* @param buffp Pointer to buffer to contain data
* @param max_bytes Maximum number of bytes available in *buffp
* @return number of bytes available, or -1 for error
*/
int keyboard_get_scan(uint8_t **buffp, int max_bytes);
/* clear any saved keyboard state (empty FIFO, etc) */
void keyboard_clear_state(void);
#endif /* __CROS_KEYBOARD_SCAN_H */
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