/* $NetBSD: eldreg.h,v 1.1 2015/03/28 14:09:59 jmcneill Exp $ */
/*
* Copyright (c) 2011 Jared D. McNeill <
[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ELDREG_H
#define _ELDREG_H
#define ELD_MAX_NBYTES 80 /* version 2; 15 SAD count */
struct eld_header_block {
uint8_t flags; /* ver */
uint8_t reserved1;
uint8_t baseline_eld_len; /* dword count */
uint8_t reserved2;
} __packed;
struct eld_baseline_block {
struct eld_header_block header;
uint8_t flags[4]; /* cea_edid_ver, mnl,
* sad_count, conn_type, s_ai, hdcp,
* aud_synch_delay,
* rlrc, flrc, rc, rlr, fc, lfe, flr
*/
uint64_t port_id;
uint16_t vendor;
uint16_t product;
/* monitor name string, CEA SADs, vendor data ... */
} __packed;
#define ELD_VER(block) (((block)->header.flags >> 3) & 0x1f)
#define ELD_VER_2 0x02
#define ELD_VER_UNCONF 0x1f
#define ELD_CEA_EDID_VER(block) (((block)->flags[0] >> 5) & 0x07)
#define ELD_CEA_EDID_VER_NONE 0x0
#define ELD_CEA_EDID_VER_861 0x1
#define ELD_CEA_EDID_VER_861A 0x2
#define ELD_CEA_EDID_VER_861BCD 0x3
#define ELD_MNL(block) (((block)->flags[0] >> 0) & 0x1f)
#define ELD_SAD_COUNT(block) (((block)->flags[1] >> 4) & 0x0f)
#define ELD_CONN_TYPE(block) (((block)->flags[1] >> 2) & 0x03)
#define ELD_CONN_TYPE_HDMI 0x0
#define ELD_S_AI(block) (((block)->flags[1] >> 1) & 0x01)
#define ELD_HDCP(block) (((block)->flags[1] >> 0) & 0x01)
#define ELD_AUDIO_DELAY(block) ((block)->flags[2])
#define ELD_AUDIO_DELAY_NONE 0x00
#define ELD_AUDIO_DELAY_MS(x) ((x) * 2)
#define ELD_AUDIO_DELAY_MS_MAX 500
#define ELD_SPEAKER(block) ((block)->flags[3])
#define ELD_SPEAKER_RLRC 0x40
#define ELD_SPEAKER_FLRC 0x20
#define ELD_SPEAKER_RC 0x10
#define ELD_SPEAKER_RLR 0x08
#define ELD_SPEAKER_FC 0x04
#define ELD_SPEAKER_LFE 0x02
#define ELD_SPEAKER_FLR 0x01
#endif /* !_ELDREG_H */
