1 | /* $NetBSD: eldreg.h,v 1.1 2015/03/28 14:09:59 jmcneill Exp $ */ |
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 | |
33 | struct { |
34 | uint8_t ; /* ver */ |
35 | uint8_t ; |
36 | uint8_t ; /* dword count */ |
37 | uint8_t ; |
38 | } __packed; |
39 | |
40 | struct eld_baseline_block { |
41 | struct eld_header_block ; |
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 | |