[thirdparty/u-boot.git] / include / cros_ec_message.h

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

#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
83d290c5	1	/* SPDX-License-Identifier: GPL-2.0+ */
88364387 HT	2	/*
	3	* Chromium OS Matrix Keyboard Message Protocol definitions
	4	*
	5	* Copyright (c) 2012 The Chromium OS Authors.
88364387 HT	6	*/
	7
	8	#ifndef _CROS_MESSAGE_H
	9	#define _CROS_MESSAGE_H
	10
	11	/*
	12	* Command interface between EC and AP, for LPC, I2C and SPI interfaces.
	13	*
	14	* This is copied from the Chromium OS Open Source Embedded Controller code.
	15	*/
	16	enum {
	17	/* The header byte, which follows the preamble */
	18	MSG_HEADER = 0xec,
	19
	20	MSG_HEADER_BYTES = 3,
	21	MSG_TRAILER_BYTES = 2,
	22	MSG_PROTO_BYTES = MSG_HEADER_BYTES + MSG_TRAILER_BYTES,
	23
	24	/* Max length of messages */
836bb6e8	25	MSG_BYTES = EC_PROTO2_MAX_PARAM_SIZE + MSG_PROTO_BYTES,
88364387 HT	26	};
	27
	28	#endif