root/include/linux/hdmi.h

INCLUDED FROM

   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_packet_type {
  31         HDMI_PACKET_TYPE_NULL = 0x00,
  32         HDMI_PACKET_TYPE_AUDIO_CLOCK_REGEN = 0x01,
  33         HDMI_PACKET_TYPE_AUDIO_SAMPLE = 0x02,
  34         HDMI_PACKET_TYPE_GENERAL_CONTROL = 0x03,
  35         HDMI_PACKET_TYPE_ACP = 0x04,
  36         HDMI_PACKET_TYPE_ISRC1 = 0x05,
  37         HDMI_PACKET_TYPE_ISRC2 = 0x06,
  38         HDMI_PACKET_TYPE_ONE_BIT_AUDIO_SAMPLE = 0x07,
  39         HDMI_PACKET_TYPE_DST_AUDIO = 0x08,
  40         HDMI_PACKET_TYPE_HBR_AUDIO_STREAM = 0x09,
  41         HDMI_PACKET_TYPE_GAMUT_METADATA = 0x0a,
  42         /* + enum hdmi_infoframe_type */
  43 };
  44 
  45 enum hdmi_infoframe_type {
  46         HDMI_INFOFRAME_TYPE_VENDOR = 0x81,
  47         HDMI_INFOFRAME_TYPE_AVI = 0x82,
  48         HDMI_INFOFRAME_TYPE_SPD = 0x83,
  49         HDMI_INFOFRAME_TYPE_AUDIO = 0x84,
  50         HDMI_INFOFRAME_TYPE_DRM = 0x87,
  51 };
  52 
  53 #define HDMI_IEEE_OUI 0x000c03
  54 #define HDMI_FORUM_IEEE_OUI 0xc45dd8
  55 #define HDMI_INFOFRAME_HEADER_SIZE  4
  56 #define HDMI_AVI_INFOFRAME_SIZE    13
  57 #define HDMI_SPD_INFOFRAME_SIZE    25
  58 #define HDMI_AUDIO_INFOFRAME_SIZE  10
  59 #define HDMI_DRM_INFOFRAME_SIZE    26
  60 
  61 #define HDMI_INFOFRAME_SIZE(type)       \
  62         (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)
  63 
  64 struct hdmi_any_infoframe {
  65         enum hdmi_infoframe_type type;
  66         unsigned char version;
  67         unsigned char length;
  68 };
  69 
  70 enum hdmi_colorspace {
  71         HDMI_COLORSPACE_RGB,
  72         HDMI_COLORSPACE_YUV422,
  73         HDMI_COLORSPACE_YUV444,
  74         HDMI_COLORSPACE_YUV420,
  75         HDMI_COLORSPACE_RESERVED4,
  76         HDMI_COLORSPACE_RESERVED5,
  77         HDMI_COLORSPACE_RESERVED6,
  78         HDMI_COLORSPACE_IDO_DEFINED,
  79 };
  80 
  81 enum hdmi_scan_mode {
  82         HDMI_SCAN_MODE_NONE,
  83         HDMI_SCAN_MODE_OVERSCAN,
  84         HDMI_SCAN_MODE_UNDERSCAN,
  85         HDMI_SCAN_MODE_RESERVED,
  86 };
  87 
  88 enum hdmi_colorimetry {
  89         HDMI_COLORIMETRY_NONE,
  90         HDMI_COLORIMETRY_ITU_601,
  91         HDMI_COLORIMETRY_ITU_709,
  92         HDMI_COLORIMETRY_EXTENDED,
  93 };
  94 
  95 enum hdmi_picture_aspect {
  96         HDMI_PICTURE_ASPECT_NONE,
  97         HDMI_PICTURE_ASPECT_4_3,
  98         HDMI_PICTURE_ASPECT_16_9,
  99         HDMI_PICTURE_ASPECT_64_27,
 100         HDMI_PICTURE_ASPECT_256_135,
 101         HDMI_PICTURE_ASPECT_RESERVED,
 102 };
 103 
 104 enum hdmi_active_aspect {
 105         HDMI_ACTIVE_ASPECT_16_9_TOP = 2,
 106         HDMI_ACTIVE_ASPECT_14_9_TOP = 3,
 107         HDMI_ACTIVE_ASPECT_16_9_CENTER = 4,
 108         HDMI_ACTIVE_ASPECT_PICTURE = 8,
 109         HDMI_ACTIVE_ASPECT_4_3 = 9,
 110         HDMI_ACTIVE_ASPECT_16_9 = 10,
 111         HDMI_ACTIVE_ASPECT_14_9 = 11,
 112         HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13,
 113         HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14,
 114         HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15,
 115 };
 116 
 117 enum hdmi_extended_colorimetry {
 118         HDMI_EXTENDED_COLORIMETRY_XV_YCC_601,
 119         HDMI_EXTENDED_COLORIMETRY_XV_YCC_709,
 120         HDMI_EXTENDED_COLORIMETRY_S_YCC_601,
 121         HDMI_EXTENDED_COLORIMETRY_OPYCC_601,
 122         HDMI_EXTENDED_COLORIMETRY_OPRGB,
 123 
 124         /* The following EC values are only defined in CEA-861-F. */
 125         HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM,
 126         HDMI_EXTENDED_COLORIMETRY_BT2020,
 127         HDMI_EXTENDED_COLORIMETRY_RESERVED,
 128 };
 129 
 130 enum hdmi_quantization_range {
 131         HDMI_QUANTIZATION_RANGE_DEFAULT,
 132         HDMI_QUANTIZATION_RANGE_LIMITED,
 133         HDMI_QUANTIZATION_RANGE_FULL,
 134         HDMI_QUANTIZATION_RANGE_RESERVED,
 135 };
 136 
 137 /* non-uniform picture scaling */
 138 enum hdmi_nups {
 139         HDMI_NUPS_UNKNOWN,
 140         HDMI_NUPS_HORIZONTAL,
 141         HDMI_NUPS_VERTICAL,
 142         HDMI_NUPS_BOTH,
 143 };
 144 
 145 enum hdmi_ycc_quantization_range {
 146         HDMI_YCC_QUANTIZATION_RANGE_LIMITED,
 147         HDMI_YCC_QUANTIZATION_RANGE_FULL,
 148 };
 149 
 150 enum hdmi_content_type {
 151         HDMI_CONTENT_TYPE_GRAPHICS,
 152         HDMI_CONTENT_TYPE_PHOTO,
 153         HDMI_CONTENT_TYPE_CINEMA,
 154         HDMI_CONTENT_TYPE_GAME,
 155 };
 156 
 157 enum hdmi_metadata_type {
 158         HDMI_STATIC_METADATA_TYPE1 = 1,
 159 };
 160 
 161 enum hdmi_eotf {
 162         HDMI_EOTF_TRADITIONAL_GAMMA_SDR,
 163         HDMI_EOTF_TRADITIONAL_GAMMA_HDR,
 164         HDMI_EOTF_SMPTE_ST2084,
 165         HDMI_EOTF_BT_2100_HLG,
 166 };
 167 
 168 struct hdmi_avi_infoframe {
 169         enum hdmi_infoframe_type type;
 170         unsigned char version;
 171         unsigned char length;
 172         enum hdmi_colorspace colorspace;
 173         enum hdmi_scan_mode scan_mode;
 174         enum hdmi_colorimetry colorimetry;
 175         enum hdmi_picture_aspect picture_aspect;
 176         enum hdmi_active_aspect active_aspect;
 177         bool itc;
 178         enum hdmi_extended_colorimetry extended_colorimetry;
 179         enum hdmi_quantization_range quantization_range;
 180         enum hdmi_nups nups;
 181         unsigned char video_code;
 182         enum hdmi_ycc_quantization_range ycc_quantization_range;
 183         enum hdmi_content_type content_type;
 184         unsigned char pixel_repeat;
 185         unsigned short top_bar;
 186         unsigned short bottom_bar;
 187         unsigned short left_bar;
 188         unsigned short right_bar;
 189 };
 190 
 191 /* DRM Infoframe as per CTA 861.G spec */
 192 struct hdmi_drm_infoframe {
 193         enum hdmi_infoframe_type type;
 194         unsigned char version;
 195         unsigned char length;
 196         enum hdmi_eotf eotf;
 197         enum hdmi_metadata_type metadata_type;
 198         struct {
 199                 u16 x, y;
 200         } display_primaries[3];
 201         struct {
 202                 u16 x, y;
 203         } white_point;
 204         u16 max_display_mastering_luminance;
 205         u16 min_display_mastering_luminance;
 206         u16 max_cll;
 207         u16 max_fall;
 208 };
 209 
 210 int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
 211 ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
 212                                 size_t size);
 213 ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
 214                                      void *buffer, size_t size);
 215 int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame);
 216 int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame);
 217 ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, void *buffer,
 218                                 size_t size);
 219 ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame,
 220                                      void *buffer, size_t size);
 221 int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame);
 222 
 223 enum hdmi_spd_sdi {
 224         HDMI_SPD_SDI_UNKNOWN,
 225         HDMI_SPD_SDI_DSTB,
 226         HDMI_SPD_SDI_DVDP,
 227         HDMI_SPD_SDI_DVHS,
 228         HDMI_SPD_SDI_HDDVR,
 229         HDMI_SPD_SDI_DVC,
 230         HDMI_SPD_SDI_DSC,
 231         HDMI_SPD_SDI_VCD,
 232         HDMI_SPD_SDI_GAME,
 233         HDMI_SPD_SDI_PC,
 234         HDMI_SPD_SDI_BD,
 235         HDMI_SPD_SDI_SACD,
 236         HDMI_SPD_SDI_HDDVD,
 237         HDMI_SPD_SDI_PMP,
 238 };
 239 
 240 struct hdmi_spd_infoframe {
 241         enum hdmi_infoframe_type type;
 242         unsigned char version;
 243         unsigned char length;
 244         char vendor[8];
 245         char product[16];
 246         enum hdmi_spd_sdi sdi;
 247 };
 248 
 249 int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
 250                             const char *vendor, const char *product);
 251 ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
 252                                 size_t size);
 253 ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
 254                                      void *buffer, size_t size);
 255 int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame);
 256 
 257 enum hdmi_audio_coding_type {
 258         HDMI_AUDIO_CODING_TYPE_STREAM,
 259         HDMI_AUDIO_CODING_TYPE_PCM,
 260         HDMI_AUDIO_CODING_TYPE_AC3,
 261         HDMI_AUDIO_CODING_TYPE_MPEG1,
 262         HDMI_AUDIO_CODING_TYPE_MP3,
 263         HDMI_AUDIO_CODING_TYPE_MPEG2,
 264         HDMI_AUDIO_CODING_TYPE_AAC_LC,
 265         HDMI_AUDIO_CODING_TYPE_DTS,
 266         HDMI_AUDIO_CODING_TYPE_ATRAC,
 267         HDMI_AUDIO_CODING_TYPE_DSD,
 268         HDMI_AUDIO_CODING_TYPE_EAC3,
 269         HDMI_AUDIO_CODING_TYPE_DTS_HD,
 270         HDMI_AUDIO_CODING_TYPE_MLP,
 271         HDMI_AUDIO_CODING_TYPE_DST,
 272         HDMI_AUDIO_CODING_TYPE_WMA_PRO,
 273         HDMI_AUDIO_CODING_TYPE_CXT,
 274 };
 275 
 276 enum hdmi_audio_sample_size {
 277         HDMI_AUDIO_SAMPLE_SIZE_STREAM,
 278         HDMI_AUDIO_SAMPLE_SIZE_16,
 279         HDMI_AUDIO_SAMPLE_SIZE_20,
 280         HDMI_AUDIO_SAMPLE_SIZE_24,
 281 };
 282 
 283 enum hdmi_audio_sample_frequency {
 284         HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
 285         HDMI_AUDIO_SAMPLE_FREQUENCY_32000,
 286         HDMI_AUDIO_SAMPLE_FREQUENCY_44100,
 287         HDMI_AUDIO_SAMPLE_FREQUENCY_48000,
 288         HDMI_AUDIO_SAMPLE_FREQUENCY_88200,
 289         HDMI_AUDIO_SAMPLE_FREQUENCY_96000,
 290         HDMI_AUDIO_SAMPLE_FREQUENCY_176400,
 291         HDMI_AUDIO_SAMPLE_FREQUENCY_192000,
 292 };
 293 
 294 enum hdmi_audio_coding_type_ext {
 295         /* Refer to Audio Coding Type (CT) field in Data Byte 1 */
 296         HDMI_AUDIO_CODING_TYPE_EXT_CT,
 297 
 298         /*
 299          * The next three CXT values are defined in CEA-861-E only.
 300          * They do not exist in older versions, and in CEA-861-F they are
 301          * defined as 'Not in use'.
 302          */
 303         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC,
 304         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2,
 305         HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND,
 306 
 307         /* The following CXT values are only defined in CEA-861-F. */
 308         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC,
 309         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2,
 310         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC,
 311         HDMI_AUDIO_CODING_TYPE_EXT_DRA,
 312         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND,
 313         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10,
 314 };
 315 
 316 struct hdmi_audio_infoframe {
 317         enum hdmi_infoframe_type type;
 318         unsigned char version;
 319         unsigned char length;
 320         unsigned char channels;
 321         enum hdmi_audio_coding_type coding_type;
 322         enum hdmi_audio_sample_size sample_size;
 323         enum hdmi_audio_sample_frequency sample_frequency;
 324         enum hdmi_audio_coding_type_ext coding_type_ext;
 325         unsigned char channel_allocation;
 326         unsigned char level_shift_value;
 327         bool downmix_inhibit;
 328 
 329 };
 330 
 331 int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame);
 332 ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
 333                                   void *buffer, size_t size);
 334 ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
 335                                        void *buffer, size_t size);
 336 int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
 337 
 338 enum hdmi_3d_structure {
 339         HDMI_3D_STRUCTURE_INVALID = -1,
 340         HDMI_3D_STRUCTURE_FRAME_PACKING = 0,
 341         HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE,
 342         HDMI_3D_STRUCTURE_LINE_ALTERNATIVE,
 343         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL,
 344         HDMI_3D_STRUCTURE_L_DEPTH,
 345         HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH,
 346         HDMI_3D_STRUCTURE_TOP_AND_BOTTOM,
 347         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8,
 348 };
 349 
 350 
 351 struct hdmi_vendor_infoframe {
 352         enum hdmi_infoframe_type type;
 353         unsigned char version;
 354         unsigned char length;
 355         unsigned int oui;
 356         u8 vic;
 357         enum hdmi_3d_structure s3d_struct;
 358         unsigned int s3d_ext_data;
 359 };
 360 
 361 /* HDR Metadata as per 861.G spec */
 362 struct hdr_static_metadata {
 363         __u8 eotf;
 364         __u8 metadata_type;
 365         __u16 max_cll;
 366         __u16 max_fall;
 367         __u16 min_cll;
 368 };
 369 
 370 /**
 371  * struct hdr_sink_metadata - HDR sink metadata
 372  *
 373  * Metadata Information read from Sink's EDID
 374  */
 375 struct hdr_sink_metadata {
 376         /**
 377          * @metadata_type: Static_Metadata_Descriptor_ID.
 378          */
 379         __u32 metadata_type;
 380         /**
 381          * @hdmi_type1: HDR Metadata Infoframe.
 382          */
 383         union {
 384                 struct hdr_static_metadata hdmi_type1;
 385         };
 386 };
 387 
 388 int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame);
 389 ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
 390                                    void *buffer, size_t size);
 391 ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
 392                                         void *buffer, size_t size);
 393 int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame);
 394 
 395 union hdmi_vendor_any_infoframe {
 396         struct {
 397                 enum hdmi_infoframe_type type;
 398                 unsigned char version;
 399                 unsigned char length;
 400                 unsigned int oui;
 401         } any;
 402         struct hdmi_vendor_infoframe hdmi;
 403 };
 404 
 405 /**
 406  * union hdmi_infoframe - overall union of all abstract infoframe representations
 407  * @any: generic infoframe
 408  * @avi: avi infoframe
 409  * @spd: spd infoframe
 410  * @vendor: union of all vendor infoframes
 411  * @audio: audio infoframe
 412  * @drm: Dynamic Range and Mastering infoframe
 413  *
 414  * This is used by the generic pack function. This works since all infoframes
 415  * have the same header which also indicates which type of infoframe should be
 416  * packed.
 417  */
 418 union hdmi_infoframe {
 419         struct hdmi_any_infoframe any;
 420         struct hdmi_avi_infoframe avi;
 421         struct hdmi_spd_infoframe spd;
 422         union hdmi_vendor_any_infoframe vendor;
 423         struct hdmi_audio_infoframe audio;
 424         struct hdmi_drm_infoframe drm;
 425 };
 426 
 427 ssize_t hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer,
 428                             size_t size);
 429 ssize_t hdmi_infoframe_pack_only(const union hdmi_infoframe *frame,
 430                                  void *buffer, size_t size);
 431 int hdmi_infoframe_check(union hdmi_infoframe *frame);
 432 int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
 433                           const void *buffer, size_t size);
 434 void hdmi_infoframe_log(const char *level, struct device *dev,
 435                         const union hdmi_infoframe *frame);
 436 
 437 #endif /* _DRM_HDMI_H */