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 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 40 struct 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