/* $NetBSD: hdmireg.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 _HDMIREG_H
#define _HDMIREG_H
struct hdmi_audio_infoframe_header {
uint8_t packet_type;
uint8_t version;
uint8_t length;
} __packed;
#define HDMI_AI_PACKET_TYPE 0x84
#define HDMI_AI_VERSION 0x01
#define HDMI_AI_LENGTH 0x0a
struct hdmi_audio_infoframe {
struct hdmi_audio_infoframe_header header;
uint8_t checksum;
uint8_t ct_cc;
uint8_t sf_ss;
uint8_t ct_ext;
uint8_t ca;
uint8_t dm_inh_lsv;
uint8_t reserved;
} __packed;
#define HDMI_AI_CHANNEL_COUNT(ai) ((ai)->ct_cc & 0x07)
#define HDMI_AI_CODING_TYPE(ai) ((ai)->ct_cc & 0xf0)
#define HDMI_AI_SAMPLE_SIZE(ai) ((ai)->sf_ss & 0x03)
#define HDMI_AI_SAMPLE_FREQUENCY(ai) ((ai)->sf_ss & 0x18)
#define HDMI_AI_LSV(ai) ((ai)->dm_inh_lsv & 0x78)
#define HDMI_AI_DM_INH(ai) ((ai)->dm_inh_lsv & 0x80)
#endif /* !_HDMIREG_H */
