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 };
  51
  52 #define HDMI_IEEE_OUI 0x000c03
  53 #define HDMI_FORUM_IEEE_OUI 0xc45dd8
  54 #define HDMI_INFOFRAME_HEADER_SIZE  4
  55 #define HDMI_AVI_INFOFRAME_SIZE    13
  56 #define HDMI_SPD_INFOFRAME_SIZE    25
  57 #define HDMI_AUDIO_INFOFRAME_SIZE  10
  58
  59 #define HDMI_INFOFRAME_SIZE(type)       \
  60         (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)
  61
  62 struct hdmi_any_infoframe {
  63         enum hdmi_infoframe_type type;
  64         unsigned char version;
  65         unsigned char length;
  66 };
  67
  68 enum hdmi_colorspace {
  69         HDMI_COLORSPACE_RGB,
  70         HDMI_COLORSPACE_YUV422,
  71         HDMI_COLORSPACE_YUV444,
  72         HDMI_COLORSPACE_YUV420,
  73         HDMI_COLORSPACE_RESERVED4,
  74         HDMI_COLORSPACE_RESERVED5,
  75         HDMI_COLORSPACE_RESERVED6,
  76         HDMI_COLORSPACE_IDO_DEFINED,
  77 };
  78
  79 enum hdmi_scan_mode {
  80         HDMI_SCAN_MODE_NONE,
  81         HDMI_SCAN_MODE_OVERSCAN,
  82         HDMI_SCAN_MODE_UNDERSCAN,
  83         HDMI_SCAN_MODE_RESERVED,
  84 };
  85
  86 enum hdmi_colorimetry {
  87         HDMI_COLORIMETRY_NONE,
  88         HDMI_COLORIMETRY_ITU_601,
  89         HDMI_COLORIMETRY_ITU_709,
  90         HDMI_COLORIMETRY_EXTENDED,
  91 };
  92
  93 enum hdmi_picture_aspect {
  94         HDMI_PICTURE_ASPECT_NONE,
  95         HDMI_PICTURE_ASPECT_4_3,
  96         HDMI_PICTURE_ASPECT_16_9,
  97         HDMI_PICTURE_ASPECT_64_27,
  98         HDMI_PICTURE_ASPECT_256_135,
  99         HDMI_PICTURE_ASPECT_RESERVED,
 100 };
 101
 102 enum hdmi_active_aspect {
 103         HDMI_ACTIVE_ASPECT_16_9_TOP = 2,
 104         HDMI_ACTIVE_ASPECT_14_9_TOP = 3,
 105         HDMI_ACTIVE_ASPECT_16_9_CENTER = 4,
 106         HDMI_ACTIVE_ASPECT_PICTURE = 8,
 107         HDMI_ACTIVE_ASPECT_4_3 = 9,
 108         HDMI_ACTIVE_ASPECT_16_9 = 10,
 109         HDMI_ACTIVE_ASPECT_14_9 = 11,
 110         HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13,
 111         HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14,
 112         HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15,
 113 };
 114
 115 enum hdmi_extended_colorimetry {
 116         HDMI_EXTENDED_COLORIMETRY_XV_YCC_601,
 117         HDMI_EXTENDED_COLORIMETRY_XV_YCC_709,
 118         HDMI_EXTENDED_COLORIMETRY_S_YCC_601,
 119         HDMI_EXTENDED_COLORIMETRY_OPYCC_601,
 120         HDMI_EXTENDED_COLORIMETRY_OPRGB,
 121
 122         /* The following EC values are only defined in CEA-861-F. */
 123         HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM,
 124         HDMI_EXTENDED_COLORIMETRY_BT2020,
 125         HDMI_EXTENDED_COLORIMETRY_RESERVED,
 126 };
 127
 128 enum hdmi_quantization_range {
 129         HDMI_QUANTIZATION_RANGE_DEFAULT,
 130         HDMI_QUANTIZATION_RANGE_LIMITED,
 131         HDMI_QUANTIZATION_RANGE_FULL,
 132         HDMI_QUANTIZATION_RANGE_RESERVED,
 133 };
 134
 135 /* non-uniform picture scaling */
 136 enum hdmi_nups {
 137         HDMI_NUPS_UNKNOWN,
 138         HDMI_NUPS_HORIZONTAL,
 139         HDMI_NUPS_VERTICAL,
 140         HDMI_NUPS_BOTH,
 141 };
 142
 143 enum hdmi_ycc_quantization_range {
 144         HDMI_YCC_QUANTIZATION_RANGE_LIMITED,
 145         HDMI_YCC_QUANTIZATION_RANGE_FULL,
 146 };
 147
 148 enum hdmi_content_type {
 149         HDMI_CONTENT_TYPE_GRAPHICS,
 150         HDMI_CONTENT_TYPE_PHOTO,
 151         HDMI_CONTENT_TYPE_CINEMA,
 152         HDMI_CONTENT_TYPE_GAME,
 153 };
 154
 155 struct hdmi_avi_infoframe {
 156         enum hdmi_infoframe_type type;
 157         unsigned char version;
 158         unsigned char length;
 159         enum hdmi_colorspace colorspace;
 160         enum hdmi_scan_mode scan_mode;
 161         enum hdmi_colorimetry colorimetry;
 162         enum hdmi_picture_aspect picture_aspect;
 163         enum hdmi_active_aspect active_aspect;
 164         bool itc;
 165         enum hdmi_extended_colorimetry extended_colorimetry;
 166         enum hdmi_quantization_range quantization_range;
 167         enum hdmi_nups nups;
 168         unsigned char video_code;
 169         enum hdmi_ycc_quantization_range ycc_quantization_range;
 170         enum hdmi_content_type content_type;
 171         unsigned char pixel_repeat;
 172         unsigned short top_bar;
 173         unsigned short bottom_bar;
 174         unsigned short left_bar;
 175         unsigned short right_bar;
 176 };
 177
 178 int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
 179 ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
 180                                 size_t size);
 181 ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
 182                                      void *buffer, size_t size);
 183 int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame);
 184
 185 enum hdmi_spd_sdi {
 186         HDMI_SPD_SDI_UNKNOWN,
 187         HDMI_SPD_SDI_DSTB,
 188         HDMI_SPD_SDI_DVDP,
 189         HDMI_SPD_SDI_DVHS,
 190         HDMI_SPD_SDI_HDDVR,
 191         HDMI_SPD_SDI_DVC,
 192         HDMI_SPD_SDI_DSC,
 193         HDMI_SPD_SDI_VCD,
 194         HDMI_SPD_SDI_GAME,
 195         HDMI_SPD_SDI_PC,
 196         HDMI_SPD_SDI_BD,
 197         HDMI_SPD_SDI_SACD,
 198         HDMI_SPD_SDI_HDDVD,
 199         HDMI_SPD_SDI_PMP,
 200 };
 201
 202 struct hdmi_spd_infoframe {
 203         enum hdmi_infoframe_type type;
 204         unsigned char version;
 205         unsigned char length;
 206         char vendor[8];
 207         char product[16];
 208         enum hdmi_spd_sdi sdi;
 209 };
 210
 211 int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
 212                             const char *vendor, const char *product);
 213 ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
 214                                 size_t size);
 215 ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
 216                                      void *buffer, size_t size);
 217 int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame);
 218
 219 enum hdmi_audio_coding_type {
 220         HDMI_AUDIO_CODING_TYPE_STREAM,
 221         HDMI_AUDIO_CODING_TYPE_PCM,
 222         HDMI_AUDIO_CODING_TYPE_AC3,
 223         HDMI_AUDIO_CODING_TYPE_MPEG1,
 224         HDMI_AUDIO_CODING_TYPE_MP3,
 225         HDMI_AUDIO_CODING_TYPE_MPEG2,
 226         HDMI_AUDIO_CODING_TYPE_AAC_LC,
 227         HDMI_AUDIO_CODING_TYPE_DTS,
 228         HDMI_AUDIO_CODING_TYPE_ATRAC,
 229         HDMI_AUDIO_CODING_TYPE_DSD,
 230         HDMI_AUDIO_CODING_TYPE_EAC3,
 231         HDMI_AUDIO_CODING_TYPE_DTS_HD,
 232         HDMI_AUDIO_CODING_TYPE_MLP,
 233         HDMI_AUDIO_CODING_TYPE_DST,
 234         HDMI_AUDIO_CODING_TYPE_WMA_PRO,
 235         HDMI_AUDIO_CODING_TYPE_CXT,
 236 };
 237
 238 enum hdmi_audio_sample_size {
 239         HDMI_AUDIO_SAMPLE_SIZE_STREAM,
 240         HDMI_AUDIO_SAMPLE_SIZE_16,
 241         HDMI_AUDIO_SAMPLE_SIZE_20,
 242         HDMI_AUDIO_SAMPLE_SIZE_24,
 243 };
 244
 245 enum hdmi_audio_sample_frequency {
 246         HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
 247         HDMI_AUDIO_SAMPLE_FREQUENCY_32000,
 248         HDMI_AUDIO_SAMPLE_FREQUENCY_44100,
 249         HDMI_AUDIO_SAMPLE_FREQUENCY_48000,
 250         HDMI_AUDIO_SAMPLE_FREQUENCY_88200,
 251         HDMI_AUDIO_SAMPLE_FREQUENCY_96000,
 252         HDMI_AUDIO_SAMPLE_FREQUENCY_176400,
 253         HDMI_AUDIO_SAMPLE_FREQUENCY_192000,
 254 };
 255
 256 enum hdmi_audio_coding_type_ext {
 257         /* Refer to Audio Coding Type (CT) field in Data Byte 1 */
 258         HDMI_AUDIO_CODING_TYPE_EXT_CT,
 259
 260         /*
 261          * The next three CXT values are defined in CEA-861-E only.
 262          * They do not exist in older versions, and in CEA-861-F they are
 263          * defined as 'Not in use'.
 264          */
 265         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC,
 266         HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2,
 267         HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND,
 268
 269         /* The following CXT values are only defined in CEA-861-F. */
 270         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC,
 271         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2,
 272         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC,
 273         HDMI_AUDIO_CODING_TYPE_EXT_DRA,
 274         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND,
 275         HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10,
 276 };
 277
 278 struct hdmi_audio_infoframe {
 279         enum hdmi_infoframe_type type;
 280         unsigned char version;
 281         unsigned char length;
 282         unsigned char channels;
 283         enum hdmi_audio_coding_type coding_type;
 284         enum hdmi_audio_sample_size sample_size;
 285         enum hdmi_audio_sample_frequency sample_frequency;
 286         enum hdmi_audio_coding_type_ext coding_type_ext;
 287         unsigned char channel_allocation;
 288         unsigned char level_shift_value;
 289         bool downmix_inhibit;
 290
 291 };
 292
 293 int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame);
 294 ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
 295                                   void *buffer, size_t size);
 296 ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
 297                                        void *buffer, size_t size);
 298 int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
 299
 300 enum hdmi_3d_structure {
 301         HDMI_3D_STRUCTURE_INVALID = -1,
 302         HDMI_3D_STRUCTURE_FRAME_PACKING = 0,
 303         HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE,
 304         HDMI_3D_STRUCTURE_LINE_ALTERNATIVE,
 305         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL,
 306         HDMI_3D_STRUCTURE_L_DEPTH,
 307         HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH,
 308         HDMI_3D_STRUCTURE_TOP_AND_BOTTOM,
 309         HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8,
 310 };
 311
 312
 313 struct hdmi_vendor_infoframe {
 314         enum hdmi_infoframe_type type;
 315         unsigned char version;
 316         unsigned char length;
 317         unsigned int oui;
 318         u8 vic;
 319         enum hdmi_3d_structure s3d_struct;
 320         unsigned int s3d_ext_data;
 321 };
 322
 323 int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame);
 324 ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
 325                                    void *buffer, size_t size);
 326 ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
 327                                         void *buffer, size_t size);
 328 int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame);
 329
 330 union hdmi_vendor_any_infoframe {
 331         struct {
 332                 enum hdmi_infoframe_type type;
 333                 unsigned char version;
 334                 unsigned char length;
 335                 unsigned int oui;
 336         } any;
 337         struct hdmi_vendor_infoframe hdmi;
 338 };
 339
 340 /**
 341  * union hdmi_infoframe - overall union of all abstract infoframe representations
 342  * @any: generic infoframe
 343  * @avi: avi infoframe
 344  * @spd: spd infoframe
 345  * @vendor: union of all vendor infoframes
 346  * @audio: audio infoframe
 347  *
 348  * This is used by the generic pack function. This works since all infoframes
 349  * have the same header which also indicates which type of infoframe should be
 350  * packed.
 351  */
 352 union hdmi_infoframe {
 353         struct hdmi_any_infoframe any;
 354         struct hdmi_avi_infoframe avi;
 355         struct hdmi_spd_infoframe spd;
 356         union hdmi_vendor_any_infoframe vendor;
 357         struct hdmi_audio_infoframe audio;
 358 };
 359
 360 ssize_t hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer,
 361                             size_t size);
 362 ssize_t hdmi_infoframe_pack_only(const union hdmi_infoframe *frame,
 363                                  void *buffer, size_t size);
 364 int hdmi_infoframe_check(union hdmi_infoframe *frame);
 365 int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
 366                           const void *buffer, size_t size);
 367 void hdmi_infoframe_log(const char *level, struct device *dev,
 368                         const union hdmi_infoframe *frame);
 369
 370 #endif /* _DRM_HDMI_H */