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 31 struct 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 41 struct 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