mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-20 11:43:22 +00:00
88364387c6
This patch adds the cros_ec driver that implements the protocol for communicating with Google's ChromeOS embedded controller. Signed-off-by: Bernie Thompson <bhthompson@chromium.org> Signed-off-by: Bill Richardson <wfrichar@chromium.org> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Hung-ying Tyan <tyanh@chromium.org> Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Signed-off-by: Randall Spangler <rspangler@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/*
|
|
* 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., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#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
|