diff options
| author | Hung-Te Lin <hungte@chromium.org> | 2013-06-20 18:57:04 +0800 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 22:48:20 +0200 |
| commit | ce7a5a790be1cd734c5d1c9f934ade0433c0b96b (patch) | |
| tree | ef37015ad359f59817982bee97240a7e5c5f50c2 /src/ec/google/chromeec/ec_message.h | |
| parent | 3a0d0d8622c9f4f14116ecb3f265dddf52fece84 (diff) | |
| download | coreboot-ce7a5a790be1cd734c5d1c9f934ade0433c0b96b.tar.xz | |
ec/chromeec: Merge upstream V3 structure and constant definition.
Chrome EC protocol V3 has several new command structure and constants defined.
Simply cherry-picking changes from upstream.
Change-Id: I7cb61d3b632ff32743e4fa312e0cc691c1c4c663
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3748
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/ec/google/chromeec/ec_message.h')
| -rw-r--r-- | src/ec/google/chromeec/ec_message.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec_message.h b/src/ec/google/chromeec/ec_message.h new file mode 100644 index 0000000000..a2421c7ba4 --- /dev/null +++ b/src/ec/google/chromeec/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 |