[people/ms/u-boot.git] / include / cros_ec_message.h

/*
 * Chromium OS Matrix Keyboard Message Protocol definitions
 *
 * Copyright (c) 2012 The Chromium OS Authors.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef _CROS_MESSAGE_H
#define _CROS_MESSAGE_H

/*
 * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
 *
 * This is copied from the Chromium OS Open Source Embedded Controller code.
 */
enum {
	/* The header byte, which follows the preamble */
	MSG_HEADER	= 0xec,

	MSG_HEADER_BYTES	= 3,
	MSG_TRAILER_BYTES	= 2,
	MSG_PROTO_BYTES		= MSG_HEADER_BYTES + MSG_TRAILER_BYTES,

	/* Max length of messages */
	MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE + MSG_PROTO_BYTES,
};

#endif
Commit	Line	Data
88364387 HT	1	/*
	2	* Chromium OS Matrix Keyboard Message Protocol definitions
	3	*
	4	* Copyright (c) 2012 The Chromium OS Authors.
88364387	5	*
1a459660	6	* SPDX-License-Identifier: GPL-2.0+
88364387 HT	7	*/
	8
	9	#ifndef _CROS_MESSAGE_H
	10	#define _CROS_MESSAGE_H
	11
	12	/*
	13	* Command interface between EC and AP, for LPC, I2C and SPI interfaces.
	14	*
	15	* This is copied from the Chromium OS Open Source Embedded Controller code.
	16	*/
	17	enum {
	18	/* The header byte, which follows the preamble */
	19	MSG_HEADER = 0xec,
	20
	21	MSG_HEADER_BYTES = 3,
	22	MSG_TRAILER_BYTES = 2,
	23	MSG_PROTO_BYTES = MSG_HEADER_BYTES + MSG_TRAILER_BYTES,
	24
	25	/* Max length of messages */
836bb6e8	26	MSG_BYTES = EC_PROTO2_MAX_PARAM_SIZE + MSG_PROTO_BYTES,
88364387 HT	27	};
	28
	29	#endif