| /* |
| * 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 |