54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
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/* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Megachips DisplayPort to HDMI protocol converter / level shifter driver.
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*/
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#ifndef __CROS_EC_MCDP28X0_H
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#define __CROS_EC_MCDP28X0_H
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#define MCDP_OUTBUF_MAX 16
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#define MCDP_INBUF_MAX 16
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#define MCDP_CMD_GETINFO 0x40
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#define MCDP_CMD_GETDEVID 0x30
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#define MCDP_CMD_APPSTEST 0x12
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#define MCDP_CMD_APPSTESTPARAM 0x11
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#define MCDP_CMD_ACK 0x0c
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/* packet header (2 bytes: length + cmd) + data + footer (1byte: checksum) */
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#define MCDP_RSP_LEN(len) (len + 3)
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#define MCDP_LEN_GETINFO 12
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/* List of common error codes that can be returned */
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enum mcdp_error_list {
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MCDP_SUCCESS = 0,
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MCDP_ERROR_TX_CNT,
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MCDP_ERROR_TX_BODY,
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MCDP_ERROR_TX_CHKSUM,
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MCDP_ERROR_CHKSUM,
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MCDP_ERROR_RX_BYTES,
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MCDP_ERROR_RX_ACK,
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};
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/**
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* Enable mcdp driver.
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*/
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void mcdp_enable(void);
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/**
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* Disable mcdp driver.
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*/
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void mcdp_disable(void);
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/**
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* get get information command from mcdp.
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*
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* @info pointer to mcdp_info structure
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* @return zero if success, error code otherwise.
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*/
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int mcdp_get_info(struct mcdp_info *info);
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#endif
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