diff options
| author | Hung-ying Tyan <tyanh@chromium.org> | 2013-05-15 18:27:28 +0800 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-06-26 10:07:11 -0400 |
| commit | 88364387c60dc72549ccf7f2d595cbf847ab4e17 (patch) | |
| tree | db7d5c034dd87ef6fbdf7bc8c26df453d7af9e20 /include/cros_ec_message.h | |
| parent | ca85eb8c4271509aaac1ccb26ae3eb1a7827b4e6 (diff) | |
| download | u-boot-88364387c60dc72549ccf7f2d595cbf847ab4e17.tar.gz | |
cros: add cros_ec driver
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>
Diffstat (limited to 'include/cros_ec_message.h')
| -rw-r--r-- | include/cros_ec_message.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/cros_ec_message.h b/include/cros_ec_message.h new file mode 100644 index 0000000000..a2421c7ba4 --- /dev/null +++ b/include/cros_ec_message.h @@ -0,0 +1,44 @@ +/* + * 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 |