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28 lines
651 B
28 lines
651 B
/* SPDX-License-Identifier: GPL-2.0+ */ |
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/* |
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* Chromium OS Matrix Keyboard Message Protocol definitions |
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* |
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* Copyright (c) 2012 The Chromium OS Authors. |
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*/ |
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#ifndef _CROS_MESSAGE_H |
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#define _CROS_MESSAGE_H |
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/* |
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* Command interface between EC and AP, for LPC, I2C and SPI interfaces. |
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* |
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* This is copied from the Chromium OS Open Source Embedded Controller code. |
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*/ |
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enum { |
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/* The header byte, which follows the preamble */ |
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MSG_HEADER = 0xec, |
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MSG_HEADER_BYTES = 3, |
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MSG_TRAILER_BYTES = 2, |
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MSG_PROTO_BYTES = MSG_HEADER_BYTES + MSG_TRAILER_BYTES, |
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/* Max length of messages */ |
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MSG_BYTES = EC_PROTO2_MAX_PARAM_SIZE + MSG_PROTO_BYTES, |
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}; |
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#endif
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