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_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 #define HDMI_VENDOR_INFOFRAME_SIZE  4
  61
  62 #define HDMI_INFOFRAME_SIZE(type)       \
  63         (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)
  64
  65 struct hdmi_any_infoframe {
  66         enum hdmi_infoframe_type type;
  67         unsigned char version;
  68         unsigned char length;
  69 };
  70
  71 enum hdmi_colorspace {
  72         HDMI_COLORSPACE_RGB,
  73         HDMI_COLORSPACE_YUV422,
  74         HDMI_COLORSPACE_YUV444,
  75         HDMI_COLORSPACE_YUV420,
  76         HDMI_COLORSPACE_RESERVED4,
  77         HDMI_COLORSPACE_RESERVED5,
  78         HDMI_COLORSPACE_RESERVED6,
  79         HDMI_COLORSPACE_IDO_DEFINED,
  80 };
  81
  82 enum hdmi_scan_mode {
  83         HDMI_SCAN_MODE_NONE,
  84         HDMI_SCAN_MODE_OVERSCAN,
  85         HDMI_SCAN_MODE_UNDERSCAN,
  86         HDMI_SCAN_MODE_RESERVED,
  87 };
  88
  89 enum hdmi_colorimetry {
  90         HDMI_COLORIMETRY_NONE,
  91         HDMI_COLORIMETRY_ITU_601,
  92         HDMI_COLORIMETRY_ITU_709,
  93         HDMI_COLORIMETRY_EXTENDED,
  94 };
  95
  96 enum hdmi_picture_aspect {
  97         HDMI_PICTURE_ASPECT_NONE,
  98         HDMI_PICTURE_ASPECT_4_3,
  99         HDMI_PICTURE_ASPECT_16_9,
 100         HDMI_PICTURE_ASPECT_64_27,
 101         HDMI_PICTURE_ASPECT_256_135,
 102         HDMI_PICTURE_ASPECT_RESERVED,
 103 };
 104
 105 enum hdmi_active_aspect {
 106         HDMI_ACTIVE_ASPECT_16_9_TOP = 2,
 107         HDMI_ACTIVE_ASPECT_14_9_TOP = 3,
 108         HDMI_ACTIVE_ASPECT_16_9_CENTER = 4,
 109         HDMI_ACTIVE_ASPECT_PICTURE = 8,
 110         HDMI_ACTIVE_ASPECT_4_3 = 9,
 111         HDMI_ACTIVE_ASPECT_16_9 = 10,
 112         HDMI_ACTIVE_ASPECT_14_9 = 11,
 113         HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13,
 114         HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14,
 115         HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15,
 116 };
 117
 118 enum hdmi_extended_colorimetry {
 119         HDMI_EXTENDED_COLORIMETRY_XV_YCC_601,
 120         HDMI_EXTENDED_COLORIMETRY_XV_YCC_709,
 121         HDMI_EXTENDED_COLORIMETRY_S_YCC_601,
 122         HDMI_EXTENDED_COLORIMETRY_OPYCC_601,
 123         HDMI_EXTENDED_COLORIMETRY_OPRGB,
 124
 125         /* The following EC values are only defined in CEA-861-F. */
 126         HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM,
 127         HDMI_EXTENDED_COLORIMETRY_BT2020,
 128         HDMI_EXTENDED_COLORIMETRY_RESERVED,
 129 };
 130
 131 enum hdmi_quantization_range {
 132         HDMI_QUANTIZATION_RANGE_DEFAULT,
 133         HDMI_QUANTIZATION_RANGE_LIMITED,
 134         HDMI_QUANTIZATION_RANGE_FULL,
 135         HDMI_QUANTIZATION_RANGE_RESERVED,
 136 };
 137
 138 /* non-uniform picture scaling */
 139 enum hdmi_nups {
 140         HDMI_NUPS_UNKNOWN,
 141         HDMI_NUPS_HORIZONTAL,
 142         HDMI_NUPS_VERTICAL,
 143         HDMI_NUPS_BOTH,
 144 };
 145
 146 enum hdmi_ycc_quantization_range {
 147         HDMI_YCC_QUANTIZATION_RANGE_LIMITED,
 148         HDMI_YCC_QUANTIZATION_RANGE_FULL,
 149 };
 150
 151 enum hdmi_content_type {
 152         HDMI_CONTENT_TYPE_GRAPHICS,
 153         HDMI_CONTENT_TYPE_PHOTO,
 154         HDMI_CONTENT_TYPE_CINEMA,
 155         HDMI_CONTENT_TYPE_GAME,
 156 };
 157
 158 enum hdmi_metadata_type {
 159         HDMI_STATIC_METADATA_TYPE1 = 0,
 160 };
 161
 162 enum hdmi_eotf {
 163         HDMI_EOTF_TRADITIONAL_GAMMA_SDR,
 164         HDMI_EOTF_TRADITIONAL_GAMMA_HDR,
 165         HDMI_EOTF_SMPTE_ST2084,
 166         HDMI_EOTF_BT_2100_HLG,
 167 };
 168
 169 struct hdmi_avi_infoframe {
 170         enum hdmi_infoframe_type type;
 171         unsigned char version;
 172         unsigned char length;
 173         enum hdmi_colorspace colorspace;
 174         enum hdmi_scan_mode scan_mode;
 175         enum hdmi_colorimetry colorimetry;
 176         enum hdmi_picture_aspect picture_aspect;
 177         enum hdmi_active_aspect active_aspect;
 178         bool itc;
 179         enum hdmi_extended_colorimetry extended_colorimetry;
 180         enum hdmi_quantization_range quantization_range;
 181         enum hdmi_nups nups;
 182         unsigned char video_code;
 183         enum hdmi_ycc_quantization_range ycc_quantization_range;
 184         enum hdmi_content_type content_type;
 185         unsigned char pixel_repeat;
 186         unsigned short top_bar;
 187         unsigned short bottom_bar;
 188         unsigned short left_bar;
 189         unsigned short right_bar;
 190 };
 191
 192 /* DRM Infoframe as per CTA 861.G spec */
 193 struct hdmi_drm_infoframe {
 194         enum hdmi_infoframe_type type;
 195         unsigned char version;
 196         unsigned char length;
 197         enum hdmi_eotf eotf;
 198         enum hdmi_metadata_type metadata_type;
 199         struct {
 200                 u16 x, y;
 201         } display_primaries[3];
 202         struct {
 203                 u16 x, y;
 204         } white_point;
 205         u16 max_display_mastering_luminance;
 206         u16 min_display_mastering_luminance;
 207         u16 max_cll;
 208         u16 max_fall;
 209 };
 210
 211 void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
 212 ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
 213                                 size_t size);
 214 ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
 215                                      void *buffer, size_t size);
 216 int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame);
 217 int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame);
 218 ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, void *buffer,
 219                                 size_t size);
 220 ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame,
 221                                      void *buffer, size_t size);
 222 int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame);
 223 int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame,
 224                                    const void *buffer, size_t size);
 225
 226 enum hdmi_spd_sdi {
 227         HDMI_SPD_SDI_UNKNOWN,
 228         HDMI_SPD_SDI_DSTB,
 229         HDMI_SPD_SDI_DVDP,
 230         HDMI_SPD_SDI_DVHS,
 231         HDMI_SPD_SDI_HDDVR,
 232         HDMI_SPD_SDI_DVC,
 233         HDMI_SPD_SDI_DSC,
 234         HDMI_SPD_SDI_VCD,
 235         HDMI_SPD_SDI_GAME,
 236         HDMI_SPD_SDI_PC,
 237         HDMI_SPD_SDI_BD,
 238         HDMI_SPD_SDI_SACD,
 239         HDMI_SPD_SDI_HDDVD,
 240         HDMI_SPD_SDI_PMP,
 241 };
 242
 243 struct hdmi_spd_infoframe {
 244         enum hdmi_infoframe_type type;
 245         unsigned char version;
 246         unsigned char length;
 247         char vendor[8];
 248         char product[16];
 249         enum hdmi_spd_sdi sdi;
 250 };
 251
 252 int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
 253                             const char *vendor, const char *product);
 254 ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
 255                                 size_t size);
 256 ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
 257                                      void *buffer, size_t size);
 258 int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame);
 259
 260 enum hdmi_audio_coding_type {
 261         HDMI_AUDIO_CODING_TYPE_STREAM,
 262         HDMI_AUDIO_CODING_TYPE_PCM,
 263         HDMI_AUDIO_CODING_TYPE_AC3,
 264         HDMI_AUDIO_CODING_TYPE_MPEG1,
 265         HDMI_AUDIO_CODING_TYPE_MP3,
 266         HDMI_AUDIO_CODING_TYPE_MPEG2,
 267         HDMI_AUDIO_CODING_TYPE_AAC_LC,
 268         HDMI_AUDIO_CODING_TYPE_DTS,
 269         HDMI_AUDIO_CODING_TYPE_ATRAC,
 270         HDMI_AUDIO_CODING_TYPE_DSD,
 271         HDMI_AUDIO_CODING_TYPE_EAC3,
 272         HDMI_AUDIO_CODING_TYPE_DTS_HD,
 273         HDMI_AUDIO_CODING_TYPE_MLP,
 274         HDMI_AUDIO_CODING_TYPE_DST,
 275         HDMI_AUDIO_CODING_TYPE_WMA_PRO,
 276         HDMI_AUDIO_CODING_TYPE_CXT,
 277 };
 278
 279 enum hdmi_audio_sample_size {
 280         HDMI_AUDIO_SAMPLE_SIZE_STREAM,
 281         HDMI_AUDIO_SAMPLE_SIZE_16,
 282         HDMI_AUDIO_SAMPLE_SIZE_20,
 283         HDMI_AUDIO_SAMPLE_SIZE_24,
 284 };
 285
 286 enum hdmi_audio_sample_frequency {
 287         HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
 288         HDMI_AUDIO_SAMPLE_FREQUENCY_32000,
 289         HDMI_AUDIO_SAMPLE_FREQUENCY_44100,
 290         HDMI_AUDIO_SAMPLE_FREQUENCY_48000,
 291         HDMI_AUDIO_SAMPLE_FREQUENCY_88200,
 292         HDMI_AUDIO_SAMPLE_FREQUENCY_96000,
 293         HDMI_AUDIO_SAMPLE_FREQUENCY_176400,
 294         HDMI_AUDIO_SAMPLE_FREQUENCY_192000,
 295 };
 296
 297 enum hdmi_audio_coding_type_ext {
 298         /* Refer to Audio Coding Type (CT) field in Data Byte 1 */
 299         HDMI_AUDIO_CODING_TYPE_EXT_CT,
 300
 301         /*
 302          * The next three CXT values are defined in CEA-861-E only.
 303          * They do not exist in older versions, and in CEA-861-F they are
 304          * defined as 'Not in use'.
 305          */
 306         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC,
 307         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2,
 308         HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND,
 309
 310         /* The following CXT values are only defined in CEA-861-F. */
 311         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC,
 312         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2,
 313         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC,
 314         HDMI_AUDIO_CODING_TYPE_EXT_DRA,
 315         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND,
 316         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10,
 317 };
 318
 319 struct hdmi_audio_infoframe {
 320         enum hdmi_infoframe_type type;
 321         unsigned char version;
 322         unsigned char length;
 323         unsigned char channels;
 324         enum hdmi_audio_coding_type coding_type;
 325         enum hdmi_audio_sample_size sample_size;
 326         enum hdmi_audio_sample_frequency sample_frequency;
 327         enum hdmi_audio_coding_type_ext coding_type_ext;
 328         unsigned char channel_allocation;
 329         unsigned char level_shift_value;
 330         bool downmix_inhibit;
 331
 332 };
 333
 334 int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame);
 335 ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
 336                                   void *buffer, size_t size);
 337 ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
 338                                        void *buffer, size_t size);
 339 int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
 340
 341 enum hdmi_3d_structure {
 342         HDMI_3D_STRUCTURE_INVALID = -1,
 343         HDMI_3D_STRUCTURE_FRAME_PACKING = 0,
 344         HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE,
 345         HDMI_3D_STRUCTURE_LINE_ALTERNATIVE,
 346         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL,
 347         HDMI_3D_STRUCTURE_L_DEPTH,
 348         HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH,
 349         HDMI_3D_STRUCTURE_TOP_AND_BOTTOM,
 350         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8,
 351 };
 352
 353
 354 struct hdmi_vendor_infoframe {
 355         enum hdmi_infoframe_type type;
 356         unsigned char version;
 357         unsigned char length;
 358         unsigned int oui;
 359         u8 vic;
 360         enum hdmi_3d_structure s3d_struct;
 361         unsigned int s3d_ext_data;
 362 };
 363
 364 /* HDR Metadata as per 861.G spec */
 365 struct hdr_static_metadata {
 366         __u8 eotf;
 367         __u8 metadata_type;
 368         __u16 max_cll;
 369         __u16 max_fall;
 370         __u16 min_cll;
 371 };
 372
 373 /**
 374  * struct hdr_sink_metadata - HDR sink metadata
 375  *
 376  * Metadata Information read from Sink's EDID
 377  */
 378 struct hdr_sink_metadata {
 379         /**
 380          * @metadata_type: Static_Metadata_Descriptor_ID.
 381          */
 382         __u32 metadata_type;
 383         /**
 384          * @hdmi_type1: HDR Metadata Infoframe.
 385          */
 386         union {
 387                 struct hdr_static_metadata hdmi_type1;
 388         };
 389 };
 390
 391 int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame);
 392 ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
 393                                    void *buffer, size_t size);
 394 ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
 395                                         void *buffer, size_t size);
 396 int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame);
 397
 398 union hdmi_vendor_any_infoframe {
 399         struct {
 400                 enum hdmi_infoframe_type type;
 401                 unsigned char version;
 402                 unsigned char length;
 403                 unsigned int oui;
 404         } any;
 405         struct hdmi_vendor_infoframe hdmi;
 406 };
 407
 408 /**
 409  * union hdmi_infoframe - overall union of all abstract infoframe representations
 410  * @any: generic infoframe
 411  * @avi: avi infoframe
 412  * @spd: spd infoframe
 413  * @vendor: union of all vendor infoframes
 414  * @audio: audio infoframe
 415  * @drm: Dynamic Range and Mastering infoframe
 416  *
 417  * This is used by the generic pack function. This works since all infoframes
 418  * have the same header which also indicates which type of infoframe should be
 419  * packed.
 420  */
 421 union hdmi_infoframe {
 422         struct hdmi_any_infoframe any;
 423         struct hdmi_avi_infoframe avi;
 424         struct hdmi_spd_infoframe spd;
 425         union hdmi_vendor_any_infoframe vendor;
 426         struct hdmi_audio_infoframe audio;
 427         struct hdmi_drm_infoframe drm;
 428 };
 429
 430 ssize_t hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer,
 431                             size_t size);
 432 ssize_t hdmi_infoframe_pack_only(const union hdmi_infoframe *frame,
 433                                  void *buffer, size_t size);
 434 int hdmi_infoframe_check(union hdmi_infoframe *frame);
 435 int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
 436                           const void *buffer, size_t size);
 437 void hdmi_infoframe_log(const char *level, struct device *dev,
 438                         const union hdmi_infoframe *frame);
 439
 440 #endif /* _DRM_HDMI_H */