dp.h revision 2da9ebb7
1/*
2 * Copyright 2012 Haiku, Inc. All rights reserved.
3 * Distributed under the terms of the MIT License.
4 *
5 * Authors:
6 *      Alexander von Gluck, kallisti5@unixzen.com
7 */
8#ifndef _DP_H
9#define _DP_H
10
11
12#include <Accelerant.h>
13#include "dp_raw.h"
14#include <GraphicsDefs.h>
15#include <OS.h>
16
17
18typedef struct {
19	// Required configuration
20	bool	valid;			// Is valid DP information
21	uint32	auxPin;			// Normally GPIO pin on GPU
22	uint8	revision;		// DP Revision from DPCD
23
24	int		laneCount;
25	uint32	linkRate;		// DP Link Speed 162000, 270000, 540000
26
27	// Internal State information
28	uint8	linkStatus[DP_LINK_STATUS_SIZE];
29
30	uint8   trainingAttempts;
31	uint8   trainingSet[4];
32	int     trainingReadInterval;
33
34} dp_info;
35
36typedef struct {
37	uint16	address;
38	uint8	request;
39	uint8	reply;
40	void*	buffer;
41	size_t	size;
42} dp_aux_msg;
43
44uint32 dp_encode_link_rate(uint32 linkRate);
45uint32 dp_decode_link_rate(uint32 rawLinkRate);
46
47uint32 dp_get_pixel_clock_max(int linkRate, int laneCount, int bpp);
48
49
50#endif /* _DP_H */
51