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git.ipfire.org Git - people/ms/u-boot.git/blob - include/cros_ec_message.h
2 * Chromium OS Matrix Keyboard Message Protocol definitions
4 * Copyright (c) 2012 The Chromium OS Authors.
6 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef _CROS_MESSAGE_H
10 #define _CROS_MESSAGE_H
13 * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
15 * This is copied from the Chromium OS Open Source Embedded Controller code.
18 /* The header byte, which follows the preamble */
22 MSG_TRAILER_BYTES
= 2,
23 MSG_PROTO_BYTES
= MSG_HEADER_BYTES
+ MSG_TRAILER_BYTES
,
25 /* Max length of messages */
26 MSG_BYTES
= EC_PROTO2_MAX_PARAM_SIZE
+ MSG_PROTO_BYTES
,