mirror of
https://github.com/genesi/linux-legacy.git
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25054f8e22
Cleanup the siihdmi header (which really is pointless to split out...), redefine the fields for the sii info frame packets, and restructure sizes to be in terms of registers.
355 lines
8.7 KiB
C
355 lines
8.7 KiB
C
/* vim: set noet ts=8 sts=8 sw=8 : */
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/*
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* Copyright © 2010 Saleem Abdulrasool <compnerd@compnerd.org>.
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* Copyright © 2010 Genesi USA, Inc. <matt@genesi-usa.com>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef LINUX_CEA861_H
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#define LINUX_CEA861_H
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/* Header file for EIA CEA 861-E structures and definitions */
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#include <linux/edid.h>
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#define CEA861_DTD_NOT_PRESENT (0x04)
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/* NOTE: This is placed inot the EDID in little-endian order */
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static const u8 CEA861_OUI_REGISTRATION_ID_HDMI[] = { 0x00, 0x0C, 0x03 };
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struct __packed cea_timing_block {
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/* CEA Extension Header */
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u8 tag;
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u8 revision;
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u8 dtd_start_offset;
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/* Global Declarations */
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned dtd_block_count : 4;
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unsigned yuv_422_supported : 1;
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unsigned yuv_444_supported : 1;
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unsigned basic_audio_supported : 1;
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unsigned underscan_supported : 1;
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#else
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unsigned underscan_supported : 1;
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unsigned basic_audio_supported : 1;
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unsigned yuv_444_supported : 1;
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unsigned yuv_422_supported : 1;
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unsigned dtd_block_count : 4;
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#endif
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/* CEA Data Block Collection */
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/* Video Data Block */
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u8 video_data_start_offset;
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u8 short_video_descriptor[7];
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/* Audio Data Block */
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u8 audio_data_start_offset;
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u8 audio_format;
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u8 frequency;
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u8 bit_rate;
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/* Speaker Allocation Block */
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u8 speaker_allocation_start_offset;
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u8 speaker_designation;
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u8 reserved[2];
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/* Vendor Specific Data Block */
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u8 vendor_specific_offset;
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u8 ieee_registration[3];
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u8 component_source[2];
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struct edid_detailed_timing_descriptor dtb[4];
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u8 padding[29];
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u8 checksum;
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};
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#if !defined(__LITTLE_ENDIAN_BITFIELD)
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#warning "structures defined and packed for little-endian byte order"
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#endif
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/* HDMI Constants and Structures */
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#define HDMI_PACKET_TYPE_INFO_FRAME (0x80)
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#define HDMI_PACKET_CHECKSUM (0x100)
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/* InfoFrame type constants */
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enum info_frame_type {
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INFO_FRAME_TYPE_RESERVED,
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INFO_FRAME_TYPE_VENDOR_SPECIFIC,
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INFO_FRAME_TYPE_AUXILIARY_VIDEO_INFO,
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INFO_FRAME_TYPE_SOURCE_PRODUCT_DESCRIPTION,
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INFO_FRAME_TYPE_AUDIO,
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INFO_FRAME_TYPE_MPEG,
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};
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/* Common InfoFrame header information */
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struct __packed info_frame_header {
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u8 type;
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u8 version;
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u8 length;
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u8 chksum;
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};
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/* AVI InfoFrame (v2) */
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#define CEA861_AVI_INFO_FRAME_VERSION (0x02)
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enum scan_information {
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SCAN_INFORMATION_UNKNOWN,
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SCAN_INFORMATION_OVERSCANNED,
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SCAN_INFORMATION_UNDERSCANNED,
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};
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enum bar_info {
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BAR_INFO_INVALID,
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BAR_INFO_VERTICAL,
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BAR_INFO_HORIZONTAL,
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BAR_INFO_BOTH,
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};
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enum pixel_format {
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PIXEL_FORMAT_RGB, /* default */
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PIXEL_FORMAT_YUV_422,
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PIXEL_FORMAT_YUV_444,
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};
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enum active_format_description {
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ACTIVE_FORMAT_DESCRIPTION_UNSCALED = 0x08,
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ACTIVE_FORMAT_DESCRIPTION_4_3_CENTERED = 0x09,
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ACTIVE_FORMAT_DESCRIPTION_16_9_CENTERED = 0x10,
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ACTIVE_FORMAT_DESCRIPTION_14_9_CENTERED = 0x11,
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};
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enum picture_aspect_ratio {
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PICTURE_ASPECT_RATIO_UNSCALED,
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PICTURE_ASPECT_RATIO_4_3,
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PICTURE_ASPECT_RATIO_16_9,
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};
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enum colorimetry {
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COLORIMETRY_UNKNOWN,
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COLORIMETRY_BT601,
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COLORIMETRY_BT709,
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COLORIMETRY_EXTENDED,
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};
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enum non_uniform_picture_scaling {
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NON_UNIFORM_PICTURE_SCALING_NONE,
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NON_UNIFORM_PICTURE_SCALING_HORIZONTAL,
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NON_UNIFORM_PICTURE_SCALING_VERTICAL,
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NON_UNIFORM_PICTURE_SCALING_BOTH,
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};
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/* quantization range are the same flag values for RGB and YCC */
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enum quantization_range {
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QUANTIZATION_RANGE_LIMITED,
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QUANTIZATION_RANGE_FULL,
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};
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enum extended_colorimetry {
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EXTENDED_COLORIMETRY_BT601,
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EXTENDED_COLORIMETRY_BT709,
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};
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enum video_format {
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VIDEO_FORMAT_UNKNOWN,
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};
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struct __packed avi_info_frame {
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struct info_frame_header header;
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unsigned scan_information : 2;
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unsigned bar_info : 2;
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unsigned active_format_info_valid : 1;
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unsigned pixel_format : 2;
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unsigned dbyte1_reserved0 : 1;
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unsigned active_format_description : 4;
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unsigned picture_aspect_ratio : 2;
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unsigned colorimetry : 2;
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unsigned non_uniform_picture_scaling : 2;
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unsigned rgb_quantization_range : 2;
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unsigned extended_colorimetry : 3;
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unsigned it_content_present : 1;
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unsigned video_format : 7;
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unsigned dbyte4_reserved0 : 1;
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unsigned pixel_repetition_factor : 4; /* value - 1 */
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unsigned content_type : 2;
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unsigned ycc_quantizaton_range : 2;
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u16 end_of_top_bar;
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u16 start_of_bottom_bar;
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u16 end_of_left_bar;
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u16 start_of_right_bar;
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};
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/* SPD InfoFrame */
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#define CEA861_SPD_INFO_FRAME_VERSION (0x01)
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enum spd_source_information {
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SPD_SOURCE_UNKNOWN,
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SPD_SOURCE_DIGITAL_STB,
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SPD_SOURCE_DVD_PLAYER,
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SPD_SOURCE_D_VHS,
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SPD_SOURCE_HDD_VIDEORECORDER,
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SPD_SOURCE_DVC,
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SPD_SOURCE_DSC,
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SPD_SOURCE_VIDEOCD,
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SPD_SOURCE_GAME,
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SPD_SOURCE_PC_GENERAL,
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SPD_SOURCE_BLURAY_SACD,
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SPD_SOURCE_HD_DVD,
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SPD_SOURCE_PMP,
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};
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struct __packed spd_info_frame {
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struct info_frame_header header;
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u8 vendor[8];
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u8 description[16];
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u8 source_device_info;
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};
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/* Audio InfoFrame */
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#define CEA861_AUDIO_INFO_FRAME_VERSION (0x01)
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enum audio_coding_type {
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CODING_TYPE_REFER_STREAM_HEADER,
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CODING_TYPE_PCM,
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CODING_TYPE_AC3,
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CODING_TYPE_MPEG1_LAYER12,
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CODING_TYPE_MP3,
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CODING_TYPE_MPEG2,
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CODING_TYPE_AAC_LC,
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CODING_TYPE_DTS,
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CODING_TYPE_ATRAC,
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CODING_TYPE_DSD,
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CODING_TYPE_E_AC3,
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CODING_TYPE_DTS_HD,
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CODING_TYPE_MLP,
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CODING_TYPE_DST,
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CODING_TYPE_WMA_PRO,
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CODING_TYPE_EXTENDED,
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};
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enum audio_sample_frequency {
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FREQUENCY_REFER_STREAM_HEADER,
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FREQUENCY_32_KHZ,
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FREQUENCY_44_1_KHZ,
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FREQUENCY_CD = FREQUENCY_44_1_KHZ,
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FREQUENCY_48_KHZ,
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FREQUENCY_88_2_KHZ,
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FREQUENCY_96_KHZ,
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FREQUENCY_176_4_KHZ,
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FREQUENCY_192_KHZ,
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};
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enum audio_sample_size {
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SAMPLE_SIZE_REFER_STREAM_HEADER,
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SAMPLE_SIZE_16_BIT,
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SAMPLE_SIZE_20_BIT,
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SAMPLE_SIZE_24_BIT,
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};
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enum audio_coding_extended_type {
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CODING_TYPE_HE_AAC = 1,
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CODING_TYPE_HE_AACv2,
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CODING_TYPE_MPEG_SURROUND,
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};
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/* TODO define speaker allocation bits */
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#define CHANNEL_COUNT_REFER_STREAM_HEADER (0x00)
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#define CHANNEL_ALLOCATION_STEREO (0x00)
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enum audio_downmix {
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DOWNMIX_PERMITTED,
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DOWNMIX_PROHIBITED,
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};
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enum audio_lfe_level {
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LFE_LEVEL_UNKNOWN,
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LFE_LEVEL_0dB,
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LFE_LEVEL_PLUS10dB,
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LFE_LEVEL_RESERVED,
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};
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struct __packed audio_info_frame {
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struct info_frame_header header;
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unsigned channel_count : 3;
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unsigned future13 : 1;
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unsigned coding_type : 4;
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unsigned sample_size : 2;
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unsigned sample_frequency : 3;
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unsigned future25 : 1;
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unsigned future26 : 1;
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unsigned future27 : 1;
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unsigned format_code_extension : 5;
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unsigned future35 : 1;
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unsigned future36 : 1;
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unsigned future37 : 1;
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u8 channel_allocation;
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unsigned lfe_playback_level : 2;
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unsigned future52 : 1;
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unsigned level_shift : 4; /* 0-15dB */
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unsigned down_mix_inhibit : 1;
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u8 future_byte_6_10[5];
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};
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static inline void cea861_checksum_hdmi_info_frame(u8 * const info_frame)
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{
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struct info_frame_header * const header =
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(struct info_frame_header *) info_frame;
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int i;
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u8 crc;
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crc = (HDMI_PACKET_TYPE_INFO_FRAME + header->type) +
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header->version + (header->length - 1);
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for (i = 1; i < header->length; i++)
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crc += info_frame[i];
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header->chksum = HDMI_PACKET_CHECKSUM - crc;
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}
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#endif /* LINUX_CEA861_H */
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