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 void 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 */ 438