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author | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
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committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
commit | 9e80202352dd49bdd9e67b8b906d86f058431505 (patch) | |
tree | 5673c17aad6e3833da8c4ff21b5a11f666ec9fbe /src/roms/u-boot/include/cros_ec_message.h | |
download | hqemu-master.zip hqemu-master.tar.gz |
Diffstat (limited to 'src/roms/u-boot/include/cros_ec_message.h')
-rw-r--r-- | src/roms/u-boot/include/cros_ec_message.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/roms/u-boot/include/cros_ec_message.h b/src/roms/u-boot/include/cros_ec_message.h new file mode 100644 index 0000000..36e2d83 --- /dev/null +++ b/src/roms/u-boot/include/cros_ec_message.h @@ -0,0 +1,29 @@ +/* + * Chromium OS Matrix Keyboard Message Protocol definitions + * + * Copyright (c) 2012 The Chromium OS Authors. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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_PROTO2_MAX_PARAM_SIZE + MSG_PROTO_BYTES, +}; + +#endif |