1/* $NetBSD: hdmireg.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 _HDMIREG_H
29#define _HDMIREG_H
30
31struct hdmi_audio_infoframe_header {
32 uint8_t packet_type;
33 uint8_t version;
34 uint8_t length;
35} __packed;
36
37#define HDMI_AI_PACKET_TYPE 0x84
38#define HDMI_AI_VERSION 0x01
39#define HDMI_AI_LENGTH 0x0a
40
41struct hdmi_audio_infoframe {
42 struct hdmi_audio_infoframe_header header;
43 uint8_t checksum;
44 uint8_t ct_cc;
45 uint8_t sf_ss;
46 uint8_t ct_ext;
47 uint8_t ca;
48 uint8_t dm_inh_lsv;
49 uint8_t reserved;
50} __packed;
51
52#define HDMI_AI_CHANNEL_COUNT(ai) ((ai)->ct_cc & 0x07)
53#define HDMI_AI_CODING_TYPE(ai) ((ai)->ct_cc & 0xf0)
54#define HDMI_AI_SAMPLE_SIZE(ai) ((ai)->sf_ss & 0x03)
55#define HDMI_AI_SAMPLE_FREQUENCY(ai) ((ai)->sf_ss & 0x18)
56#define HDMI_AI_LSV(ai) ((ai)->dm_inh_lsv & 0x78)
57#define HDMI_AI_DM_INH(ai) ((ai)->dm_inh_lsv & 0x80)
58
59#endif /* !_HDMIREG_H */
60