include/linux/hdmi.h

   1 /*
   2  * Copyright (C) 2012 Avionic Design GmbH
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef __LINUX_HDMI_H_
  25 #define __LINUX_HDMI_H_
  26
  27 #include <linux/types.h>
  28 #include <linux/device.h>
  29
  30 enum hdmi_infoframe_type {
  31         HDMI_INFOFRAME_TYPE_VENDOR = 0x81,
  32         HDMI_INFOFRAME_TYPE_AVI = 0x82,
  33         HDMI_INFOFRAME_TYPE_SPD = 0x83,
  34         HDMI_INFOFRAME_TYPE_AUDIO = 0x84,
  35 };
  36
  37 #define HDMI_IEEE_OUI 0x000c03
  38 #define HDMI_INFOFRAME_HEADER_SIZE  4
  39 #define HDMI_AVI_INFOFRAME_SIZE    13
  40 #define HDMI_SPD_INFOFRAME_SIZE    25
  41 #define HDMI_AUDIO_INFOFRAME_SIZE  10
  42
  43 #define HDMI_INFOFRAME_SIZE(type)       \
  44         (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)
  45
  46 struct hdmi_any_infoframe {
  47         enum hdmi_infoframe_type type;
  48         unsigned char version;
  49         unsigned char length;
  50 };
  51
  52 enum hdmi_colorspace {
  53         HDMI_COLORSPACE_RGB,
  54         HDMI_COLORSPACE_YUV422,
  55         HDMI_COLORSPACE_YUV444,
  56         HDMI_COLORSPACE_YUV420,
  57         HDMI_COLORSPACE_RESERVED4,
  58         HDMI_COLORSPACE_RESERVED5,
  59         HDMI_COLORSPACE_RESERVED6,
  60         HDMI_COLORSPACE_IDO_DEFINED,
  61 };
  62
  63 enum hdmi_scan_mode {
  64         HDMI_SCAN_MODE_NONE,
  65         HDMI_SCAN_MODE_OVERSCAN,
  66         HDMI_SCAN_MODE_UNDERSCAN,
  67         HDMI_SCAN_MODE_RESERVED,
  68 };
  69
  70 enum hdmi_colorimetry {
  71         HDMI_COLORIMETRY_NONE,
  72         HDMI_COLORIMETRY_ITU_601,
  73         HDMI_COLORIMETRY_ITU_709,
  74         HDMI_COLORIMETRY_EXTENDED,
  75 };
  76
  77 enum hdmi_picture_aspect {
  78         HDMI_PICTURE_ASPECT_NONE,
  79         HDMI_PICTURE_ASPECT_4_3,
  80         HDMI_PICTURE_ASPECT_16_9,
  81         HDMI_PICTURE_ASPECT_RESERVED,
  82 };
  83
  84 enum hdmi_active_aspect {
  85         HDMI_ACTIVE_ASPECT_16_9_TOP = 2,
  86         HDMI_ACTIVE_ASPECT_14_9_TOP = 3,
  87         HDMI_ACTIVE_ASPECT_16_9_CENTER = 4,
  88         HDMI_ACTIVE_ASPECT_PICTURE = 8,
  89         HDMI_ACTIVE_ASPECT_4_3 = 9,
  90         HDMI_ACTIVE_ASPECT_16_9 = 10,
  91         HDMI_ACTIVE_ASPECT_14_9 = 11,
  92         HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13,
  93         HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14,
  94         HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15,
  95 };
  96
  97 enum hdmi_extended_colorimetry {
  98         HDMI_EXTENDED_COLORIMETRY_XV_YCC_601,
  99         HDMI_EXTENDED_COLORIMETRY_XV_YCC_709,
 100         HDMI_EXTENDED_COLORIMETRY_S_YCC_601,
 101         HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601,
 102         HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB,
 103
 104         /* The following EC values are only defined in CEA-861-F. */
 105         HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM,
 106         HDMI_EXTENDED_COLORIMETRY_BT2020,
 107         HDMI_EXTENDED_COLORIMETRY_RESERVED,
 108 };
 109
 110 enum hdmi_quantization_range {
 111         HDMI_QUANTIZATION_RANGE_DEFAULT,
 112         HDMI_QUANTIZATION_RANGE_LIMITED,
 113         HDMI_QUANTIZATION_RANGE_FULL,
 114         HDMI_QUANTIZATION_RANGE_RESERVED,
 115 };
 116
 117 /* non-uniform picture scaling */
 118 enum hdmi_nups {
 119         HDMI_NUPS_UNKNOWN,
 120         HDMI_NUPS_HORIZONTAL,
 121         HDMI_NUPS_VERTICAL,
 122         HDMI_NUPS_BOTH,
 123 };
 124
 125 enum hdmi_ycc_quantization_range {
 126         HDMI_YCC_QUANTIZATION_RANGE_LIMITED,
 127         HDMI_YCC_QUANTIZATION_RANGE_FULL,
 128 };
 129
 130 enum hdmi_content_type {
 131         HDMI_CONTENT_TYPE_GRAPHICS,
 132         HDMI_CONTENT_TYPE_PHOTO,
 133         HDMI_CONTENT_TYPE_CINEMA,
 134         HDMI_CONTENT_TYPE_GAME,
 135 };
 136
 137 struct hdmi_avi_infoframe {
 138         enum hdmi_infoframe_type type;
 139         unsigned char version;
 140         unsigned char length;
 141         enum hdmi_colorspace colorspace;
 142         enum hdmi_scan_mode scan_mode;
 143         enum hdmi_colorimetry colorimetry;
 144         enum hdmi_picture_aspect picture_aspect;
 145         enum hdmi_active_aspect active_aspect;
 146         bool itc;
 147         enum hdmi_extended_colorimetry extended_colorimetry;
 148         enum hdmi_quantization_range quantization_range;
 149         enum hdmi_nups nups;
 150         unsigned char video_code;
 151         enum hdmi_ycc_quantization_range ycc_quantization_range;
 152         enum hdmi_content_type content_type;
 153         unsigned char pixel_repeat;
 154         unsigned short top_bar;
 155         unsigned short bottom_bar;
 156         unsigned short left_bar;
 157         unsigned short right_bar;
 158 };
 159
 160 int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
 161 ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
 162                                 size_t size);
 163
 164 enum hdmi_spd_sdi {
 165         HDMI_SPD_SDI_UNKNOWN,
 166         HDMI_SPD_SDI_DSTB,
 167         HDMI_SPD_SDI_DVDP,
 168         HDMI_SPD_SDI_DVHS,
 169         HDMI_SPD_SDI_HDDVR,
 170         HDMI_SPD_SDI_DVC,
 171         HDMI_SPD_SDI_DSC,
 172         HDMI_SPD_SDI_VCD,
 173         HDMI_SPD_SDI_GAME,
 174         HDMI_SPD_SDI_PC,
 175         HDMI_SPD_SDI_BD,
 176         HDMI_SPD_SDI_SACD,
 177         HDMI_SPD_SDI_HDDVD,
 178         HDMI_SPD_SDI_PMP,
 179 };
 180
 181 struct hdmi_spd_infoframe {
 182         enum hdmi_infoframe_type type;
 183         unsigned char version;
 184         unsigned char length;
 185         char vendor[8];
 186         char product[16];
 187         enum hdmi_spd_sdi sdi;
 188 };
 189
 190 int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
 191                             const char *vendor, const char *product);
 192 ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
 193                                 size_t size);
 194
 195 enum hdmi_audio_coding_type {
 196         HDMI_AUDIO_CODING_TYPE_STREAM,
 197         HDMI_AUDIO_CODING_TYPE_PCM,
 198         HDMI_AUDIO_CODING_TYPE_AC3,
 199         HDMI_AUDIO_CODING_TYPE_MPEG1,
 200         HDMI_AUDIO_CODING_TYPE_MP3,
 201         HDMI_AUDIO_CODING_TYPE_MPEG2,
 202         HDMI_AUDIO_CODING_TYPE_AAC_LC,
 203         HDMI_AUDIO_CODING_TYPE_DTS,
 204         HDMI_AUDIO_CODING_TYPE_ATRAC,
 205         HDMI_AUDIO_CODING_TYPE_DSD,
 206         HDMI_AUDIO_CODING_TYPE_EAC3,
 207         HDMI_AUDIO_CODING_TYPE_DTS_HD,
 208         HDMI_AUDIO_CODING_TYPE_MLP,
 209         HDMI_AUDIO_CODING_TYPE_DST,
 210         HDMI_AUDIO_CODING_TYPE_WMA_PRO,
 211         HDMI_AUDIO_CODING_TYPE_CXT,
 212 };
 213
 214 enum hdmi_audio_sample_size {
 215         HDMI_AUDIO_SAMPLE_SIZE_STREAM,
 216         HDMI_AUDIO_SAMPLE_SIZE_16,
 217         HDMI_AUDIO_SAMPLE_SIZE_20,
 218         HDMI_AUDIO_SAMPLE_SIZE_24,
 219 };
 220
 221 enum hdmi_audio_sample_frequency {
 222         HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
 223         HDMI_AUDIO_SAMPLE_FREQUENCY_32000,
 224         HDMI_AUDIO_SAMPLE_FREQUENCY_44100,
 225         HDMI_AUDIO_SAMPLE_FREQUENCY_48000,
 226         HDMI_AUDIO_SAMPLE_FREQUENCY_88200,
 227         HDMI_AUDIO_SAMPLE_FREQUENCY_96000,
 228         HDMI_AUDIO_SAMPLE_FREQUENCY_176400,
 229         HDMI_AUDIO_SAMPLE_FREQUENCY_192000,
 230 };
 231
 232 enum hdmi_audio_coding_type_ext {
 233         /* Refer to Audio Coding Type (CT) field in Data Byte 1 */
 234         HDMI_AUDIO_CODING_TYPE_EXT_CT,
 235
 236         /*
 237          * The next three CXT values are defined in CEA-861-E only.
 238          * They do not exist in older versions, and in CEA-861-F they are
 239          * defined as 'Not in use'.
 240          */
 241         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC,
 242         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2,
 243         HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND,
 244
 245         /* The following CXT values are only defined in CEA-861-F. */
 246         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC,
 247         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2,
 248         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC,
 249         HDMI_AUDIO_CODING_TYPE_EXT_DRA,
 250         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND,
 251         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10,
 252 };
 253
 254 struct hdmi_audio_infoframe {
 255         enum hdmi_infoframe_type type;
 256         unsigned char version;
 257         unsigned char length;
 258         unsigned char channels;
 259         enum hdmi_audio_coding_type coding_type;
 260         enum hdmi_audio_sample_size sample_size;
 261         enum hdmi_audio_sample_frequency sample_frequency;
 262         enum hdmi_audio_coding_type_ext coding_type_ext;
 263         unsigned char channel_allocation;
 264         unsigned char level_shift_value;
 265         bool downmix_inhibit;
 266
 267 };
 268
 269 int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame);
 270 ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
 271                                   void *buffer, size_t size);
 272
 273 enum hdmi_3d_structure {
 274         HDMI_3D_STRUCTURE_INVALID = -1,
 275         HDMI_3D_STRUCTURE_FRAME_PACKING = 0,
 276         HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE,
 277         HDMI_3D_STRUCTURE_LINE_ALTERNATIVE,
 278         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL,
 279         HDMI_3D_STRUCTURE_L_DEPTH,
 280         HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH,
 281         HDMI_3D_STRUCTURE_TOP_AND_BOTTOM,
 282         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8,
 283 };
 284
 285
 286 struct hdmi_vendor_infoframe {
 287         enum hdmi_infoframe_type type;
 288         unsigned char version;
 289         unsigned char length;
 290         unsigned int oui;
 291         u8 vic;
 292         enum hdmi_3d_structure s3d_struct;
 293         unsigned int s3d_ext_data;
 294 };
 295
 296 int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame);
 297 ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
 298                                    void *buffer, size_t size);
 299
 300 union hdmi_vendor_any_infoframe {
 301         struct {
 302                 enum hdmi_infoframe_type type;
 303                 unsigned char version;
 304                 unsigned char length;
 305                 unsigned int oui;
 306         } any;
 307         struct hdmi_vendor_infoframe hdmi;
 308 };
 309
 310 /**
 311  * union hdmi_infoframe - overall union of all abstract infoframe representations
 312  * @any: generic infoframe
 313  * @avi: avi infoframe
 314  * @spd: spd infoframe
 315  * @vendor: union of all vendor infoframes
 316  * @audio: audio infoframe
 317  *
 318  * This is used by the generic pack function. This works since all infoframes
 319  * have the same header which also indicates which type of infoframe should be
 320  * packed.
 321  */
 322 union hdmi_infoframe {
 323         struct hdmi_any_infoframe any;
 324         struct hdmi_avi_infoframe avi;
 325         struct hdmi_spd_infoframe spd;
 326         union hdmi_vendor_any_infoframe vendor;
 327         struct hdmi_audio_infoframe audio;
 328 };
 329
 330 ssize_t
 331 hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size);
 332 int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer);
 333 void hdmi_infoframe_log(const char *level, struct device *dev,
 334                         union hdmi_infoframe *frame);
 335
 336 #endif /* _DRM_HDMI_H */