1/* $NetBSD$ */
2
3/*
4 * Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef _ELDREG_H
29#define _ELDREG_H
30
31#define	ELD_MAX_NBYTES		80	/* version 2; 15 SAD count */
32
33struct eld_header_block {
34	uint8_t flags;			/* ver */
35	uint8_t	reserved1;
36	uint8_t	baseline_eld_len;	/* dword count */
37	uint8_t reserved2;
38} __packed;
39
40struct eld_baseline_block {
41	struct eld_header_block	header;
42	uint8_t flags[4];		/* cea_edid_ver, mnl,
43					 * sad_count, conn_type, s_ai, hdcp,
44					 * aud_synch_delay,
45					 * rlrc, flrc, rc, rlr, fc, lfe, flr
46					 */
47	uint64_t port_id;
48	uint16_t vendor;
49	uint16_t product;
50	/* monitor name string, CEA SADs, vendor data ... */
51} __packed;
52
53#define	ELD_VER(block)		(((block)->header.flags >> 3) & 0x1f)
54#define	 ELD_VER_2		 0x02
55#define	 ELD_VER_UNCONF		 0x1f
56#define ELD_CEA_EDID_VER(block)	(((block)->flags[0] >> 5) & 0x07)
57#define	 ELD_CEA_EDID_VER_NONE	 0x0
58#define	 ELD_CEA_EDID_VER_861	 0x1
59#define	 ELD_CEA_EDID_VER_861A	 0x2
60#define	 ELD_CEA_EDID_VER_861BCD 0x3
61#define	ELD_MNL(block)		(((block)->flags[0] >> 0) & 0x1f)
62#define	ELD_SAD_COUNT(block)	(((block)->flags[1] >> 4) & 0x0f)
63#define	ELD_CONN_TYPE(block)	(((block)->flags[1] >> 2) & 0x03)
64#define	 ELD_CONN_TYPE_HDMI	 0x0
65#define	ELD_S_AI(block)		(((block)->flags[1] >> 1) & 0x01)
66#define	ELD_HDCP(block)		(((block)->flags[1] >> 0) & 0x01)
67#define	ELD_AUDIO_DELAY(block)	((block)->flags[2])
68#define	 ELD_AUDIO_DELAY_NONE	 0x00
69#define  ELD_AUDIO_DELAY_MS(x)	 ((x) * 2)
70#define	 ELD_AUDIO_DELAY_MS_MAX	 500
71#define	ELD_SPEAKER(block) 	((block)->flags[3])
72#define	 ELD_SPEAKER_RLRC	 0x40
73#define	 ELD_SPEAKER_FLRC	 0x20
74#define	 ELD_SPEAKER_RC		 0x10
75#define	 ELD_SPEAKER_RLR	 0x08
76#define	 ELD_SPEAKER_FC		 0x04
77#define	 ELD_SPEAKER_LFE	 0x02
78#define	 ELD_SPEAKER_FLR	 0x01
79
80#endif /* !_ELDREG_H */
81