| 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 | |