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/*
* Chromium OS Matrix Keyboard Message Protocol definitions
*
* Copyright (c) 2012 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#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_HOST_PARAM_SIZE + MSG_PROTO_BYTES,
};
#endif /* _CROS_MESSAGE_H */
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