tests/lib/edid-test.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <stdlib.h>
   4 #include <tests/test.h>
   5 #include <edid.h>
   6 #include <assert.h>
   7 #include <string.h>
   8 #include <tests/lib/edid.h>
   9
  10 struct test_state {
  11         int data_size;
  12         void *data;
  13 };
  14
  15 static uint8_t get_raw_edid_checksum(const unsigned char *x)
  16 {
  17         unsigned char sum = 0;
  18         int i;
  19         for (i = 0; i < 127; ++i)
  20                 sum += x[i];
  21
  22         return 256 - sum;
  23 }
  24
  25 static void edid_raw_calc_checksum(struct edid_raw *raw)
  26 {
  27         raw->checksum = get_raw_edid_checksum((const unsigned char *)raw);
  28 }
  29
  30 static void test_decode_edid_no_edid(void **state)
  31 {
  32         assert_int_equal(EDID_ABSENT, decode_edid(NULL, 0, NULL));
  33 }
  34
  35 static void test_decode_edid_invalid_header(void **state)
  36 {
  37         struct edid_raw raw = {.header = EDID_HEADER_INVALID_RAW};
  38         raw.checksum = get_raw_edid_checksum((const unsigned char *)&raw);
  39
  40         assert_int_equal(EDID_ABSENT, decode_edid((unsigned char *)&raw, sizeof(raw), NULL));
  41 }
  42
  43 /* Frame is modified example of an LCD Desktop IT display
  44    from VESA E-EDID Standard Release A2. */
  45 static int setup_decode_edid_basic_frame(void **state)
  46 {
  47         struct edid_raw raw = {
  48                 EDID_RAW_DEFAULT_PARAMS,
  49                 .video_input_type =
  50                         EDID_ANALOG_VSI
  51                         | EDID_SIGNAL_LEVEL_0
  52                         | EDID_VIDEO_SETUP_BLANK_EQ_BLACK
  53                         | EDID_SEPARATE_SYNC_H_AND_V(1)
  54                         | EDID_COMPOSITE_SYNC_H(1)
  55                         | EDID_COMPOSITE_SYNC_ON_GREEN(1)
  56                         | EDID_SERRATION_VSYNC(1),
  57                 .horizontal_size = 43, /* [cm] */
  58                 .vertical_size = 32,   /* [cm] */
  59                 .display_gamma = 120,  /* 220% */
  60                 .supported_features =
  61                         EDID_STANDBY_MODE(0)
  62                         | EDID_SUSPEND_MODE(0)
  63                         | EDID_ACTIVE_OFF(1)
  64                         | EDID_COLOR_FORMAT_RGB444
  65                         | EDID_SRGB_SUPPORTED(0)
  66                         | EDID_PREFERRED_TIMING_EXTENDED_INFO
  67                         | EDID_DISPLAY_FREQUENCY_CONTINUOUS,
  68                 .established_supported_timings = {
  69                         [0] = EDID_ESTABLISHED_TIMINGS_1_720x400_70Hz
  70                               | EDID_ESTABLISHED_TIMINGS_1_720x400_88Hz
  71                               | EDID_ESTABLISHED_TIMINGS_1_640x480_60Hz
  72                               | EDID_ESTABLISHED_TIMINGS_1_640x480_67Hz
  73                               | EDID_ESTABLISHED_TIMINGS_1_640x480_72Hz
  74                               | EDID_ESTABLISHED_TIMINGS_1_640x480_75Hz
  75                               | EDID_ESTABLISHED_TIMINGS_1_800x600_56Hz
  76                               | EDID_ESTABLISHED_TIMINGS_1_800x600_60Hz,
  77                         [1] = EDID_ESTABLISHED_TIMINGS_2_800x600_72Hz
  78                               | EDID_ESTABLISHED_TIMINGS_2_800x600_75Hz
  79                               | EDID_ESTABLISHED_TIMINGS_2_832x624_75Hz
  80                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_80HzI
  81                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_60Hz
  82                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_70Hz
  83                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_75Hz
  84                               | EDID_ESTABLISHED_TIMINGS_2_1280x1024_75Hz,
  85                 },
  86                 .manufacturers_reserved_timing = EDID_MANUFACTURERS_TIMINGS_1152x870_75Hz,
  87                 .standard_timings_supported = {
  88                         [0] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1600),
  89                         [1] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(85),
  90
  91                         [2] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1600),
  92                         [3] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(75),
  93
  94                         [4] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1600),
  95                         [5] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(70),
  96
  97                         [6] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1600),
  98                         [7] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(65),
  99
 100                         [8] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 101                         [9] = EDID_ASPECT_RATIO_5_4 | EDID_FIELD_REFRESH_RATE(85),
 102
 103                         [10] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 104                         [11] = EDID_ASPECT_RATIO_5_4 | EDID_FIELD_REFRESH_RATE(60),
 105
 106                         [12] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1024),
 107                         [13] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(85),
 108
 109                         [14] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(800),
 110                         [15] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(85),
 111                 },
 112                 .descriptor_block_1 = {
 113                         [0] = EDID_PIXEL_CLOCK(162000000u) & 0xFF,
 114                         [1] = (EDID_PIXEL_CLOCK(162000000u) >> 8) & 0xFF,
 115
 116                         /* Horizontal Addressable Video is 1600px,
 117                            Horizontal Blanking is 560px. */
 118                         [2] = 0x40,
 119                         [3] = 0x30,
 120                         [4] = 0x62,
 121
 122                         /* Vertical Addressable Video is 1200 lines,
 123                            Vertical Blanking is 50 lines. */
 124                         [5] = 0xB0,
 125                         [6] = 0x32,
 126                         [7] = 0x40,
 127
 128                         [8] = 64u,   /* Horizontal Front Porch in pixels. */
 129                         [9] = 192u,  /* Horizontal Pulse Sync Width in pixels. */
 130                         [10] = 0x13, /* Vertical Front Porch is 1 line. */
 131                         [11] = 0x00, /* Vertical Sync Pulse Width is 3 lines. */
 132
 133                         /* Horizontal Addressable Image Size is 427mm,
 134                            Vertical Addressable Image Size is 320mm. */
 135                         [12] = 0xAB,
 136                         [13] = 0x40,
 137                         [14] = 0x11,
 138
 139                         [15] = 0x00, /* Horizontal Border Size is 0px. */
 140                         [16] = 0x00, /* Vertical Border Size is 0px. */
 141
 142                         /* Timing is Non-Interlaced Video,
 143                            Stereo Video is not supported,
 144                            Digital separate syncs are requires. */
 145                         [17] = 0x1E,
 146                 },
 147                 .descriptor_block_2 = {
 148                         /* Display Range Limits Block Tag */
 149                         [0] = 0,
 150                         [1] = 0,
 151                         [2] = 0,
 152                         [3] = 0xFD,
 153
 154                         [4] = 0,   /* Horizontal and Vertical Rate Offsets are zero. */
 155                         [5] = 50u, /* Minimum Vertical Freq is 50Hz. */
 156                         [6] = 90u, /* Maximum Vertical Freq is 90Hz. */
 157
 158                         [7] = 30u,   /* Minimum Horizontal Freq is 30kHz. */
 159                         [8] = 110u,  /* Maximum Horizontal Freq is 110kHz. */
 160                         [9] = 23u,   /* Maximum Pixel Clock Freq is 230MHz. */
 161                         [10] = 0x4,  /* Begin CVT Support Info */
 162                         [11] = 0x11, /* Compatible with CVT Version 1.1 */
 163                         [12] = 0,    /* Maximum Pixel Clock Freq remains at 230MHz. */
 164                         [13] = 200,  /* Maximum Active Pixels per Line is 1600. */
 165                         [14] = 0x90, /* Supported aspect ratios: 4:3, 5:4. */
 166
 167                         /* Preferred Aspect Ratio is 4:3, Standard CVT Blanking is supported. */
 168                         [15] = 0,
 169                         [16] = 0x50, /* H. & V. Stretch are supported and Shrinks are not. */
 170                         [17] = 60u,  /* Preferred Refresh Rate is 60Hz. */
 171                 },
 172                 .descriptor_block_3 = {
 173                         /* Established Timings III Block Tag */
 174                         [0] = 0,
 175                         [1] = 0,
 176                         [2] = 0,
 177                         [3] = 0xF7,
 178                         [4] = 0,
 179
 180                         [5] = 10u, /* VESA DMT Standard Version #10 */
 181                         /*
 182                          * 640x350@85Hz,
 183                          * 640x400@85Hz,
 184                          * 720x400@85Hz,
 185                          * 640x480@85Hz,
 186                          * 800x600@85Hz,
 187                          * 1024x768@85Hz,
 188                          * 1152x864@75Hz are supported.
 189                          */
 190                         [6] = 0x7F,
 191
 192                         /*
 193                          * 1280x960@60Hz,
 194                          * 1280x960@85Hz,
 195                          * 1280x1024@60Hz,
 196                          * 1280x1024@85Hz are supported.
 197                          */
 198                         [7] = 0x0F,
 199
 200                         /*
 201                          * 1400x1050@60Hz (Normal Blanking),
 202                          * 1400x1050@75Hz are supported.
 203                          */
 204                         [8] = 0x03,
 205
 206                         /*
 207                          * 1400x1050@85Hz,
 208                          * 1600x1200@60Hz,
 209                          * 1600x1200@65Hz,
 210                          * 1600x1200@70Hz are supported.
 211                          */
 212                         [9] = 0x87,
 213
 214                         /*
 215                          * 1600x1200@75Hz,
 216                          * 1600x1200@85Hz are supported.
 217                          */
 218                         [10] = 0xC0,
 219
 220                         /* 1920 timings not supported. */
 221                         [11] = 0x0,
 222
 223                         [12 ... 17] = 0,
 224                 },
 225                 .descriptor_block_4 = {
 226                         /* Display Product Name Block Tag */
 227                         [0] = 0,
 228                         [1] = 0,
 229                         [2] = 0,
 230                         [3] = 0xFC,
 231                         [4] = 0,
 232
 233                         /* Product name */
 234                         [5] = 'A',
 235                         [6] = 'B',
 236                         [7] = 'C',
 237                         [8] = ' ',
 238                         [9] = 'L',
 239                         [10] = 'C',
 240                         [11] = 'D',
 241                         [12] = '2',
 242                         [13] = '1',
 243                         [14] = '\n',
 244                         [15] = ' ',
 245                         [16] = ' ',
 246                         [17] = ' ',
 247                 },
 248                 .extension_flag = 0x0, /* No extensions */
 249         };
 250
 251         edid_raw_calc_checksum(&raw);
 252
 253         *state = malloc(sizeof(struct test_state));
 254
 255         struct test_state ts = {.data_size = sizeof(struct edid_raw),
 256                                 .data = malloc(sizeof(struct edid_raw))};
 257
 258         memcpy(ts.data, &raw, sizeof(raw));
 259         memcpy(*state, &ts, sizeof(ts));
 260
 261         return 0;
 262 }
 263
 264 /* Test decoding of EDID frame without extensions. */
 265 static void test_decode_edid_basic_frame(void **state)
 266 {
 267         struct edid out;
 268         struct test_state *ts = *state;
 269
 270         /* In real-life situations frames often are not 100% conformant,
 271            but are at least correct when it comes to key data fields. */
 272         assert_int_equal(EDID_CONFORMANT,
 273                          decode_edid((unsigned char *)ts->data, ts->data_size, &out));
 274
 275         assert_int_equal(32, out.framebuffer_bits_per_pixel);
 276         assert_int_equal(0, out.panel_bits_per_color);
 277         assert_int_equal(0, out.panel_bits_per_pixel);
 278         assert_int_equal(0, out.link_clock);
 279         assert_int_equal(1600, out.x_resolution);
 280         assert_int_equal(1200, out.y_resolution);
 281         assert_int_equal(6400, out.bytes_per_line);
 282         assert_int_equal(0, out.hdmi_monitor_detected);
 283         assert_int_equal(0, strnlen(out.ascii_string, ARRAY_SIZE(out.ascii_string)));
 284         assert_string_equal(out.manufacturer_name, EDID_MANUFACTURER_NAME);
 285
 286         /* Mode */
 287         assert_null(out.mode.name);
 288         assert_int_equal(162000, out.mode.pixel_clock);
 289         assert_int_equal(1, out.mode.lvds_dual_channel);
 290         assert_int_equal(0, out.mode.refresh);
 291         assert_int_equal(1600, out.mode.ha);
 292         assert_int_equal(560, out.mode.hbl);
 293         assert_int_equal(64, out.mode.hso);
 294         assert_int_equal(192, out.mode.hspw);
 295         assert_int_equal(0, out.mode.hborder);
 296         assert_int_equal(1200, out.mode.va);
 297         assert_int_equal(50, out.mode.vbl);
 298         assert_int_equal(1, out.mode.vso);
 299         assert_int_equal(0, out.mode.vborder);
 300         assert_int_equal(43, out.mode.phsync);
 301         assert_int_equal(43, out.mode.pvsync);
 302         assert_int_equal(0, out.mode.x_mm);
 303         assert_int_equal(0, out.mode.y_mm);
 304
 305         assert_int_equal(1, out.mode_is_supported[EDID_MODE_640x480_60Hz]);
 306         assert_int_equal(0, out.mode_is_supported[EDID_MODE_720x480_60Hz]);
 307         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1280x720_60Hz]);
 308         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1920x1080_60Hz]);
 309 }
 310
 311 /* Frame is modified example of base EDID frame with CEA861 extension
 312    for DTV Display from VESA E-EDID Standard Release A2. */
 313 static int setup_decode_edid_dtv_frame_with_extension(void **state)
 314 {
 315         struct edid_raw raw = {
 316                 EDID_RAW_DEFAULT_PARAMS,
 317                 .video_input_type =
 318                         EDID_DIGITAL_VSI
 319                         | EDID_INTERFACE_HDMI_A
 320                         | EDID_COLOR_BIT_DEPTH_8B,
 321                 .horizontal_size = 16, /* Aspect ratio 16:9 in landscape. */
 322                 .vertical_size = 0,    /* Landscape flag */
 323                 .display_gamma = 120,  /* 220% */
 324                 .supported_features =
 325                         EDID_STANDBY_MODE(0)
 326                         | EDID_SUSPEND_MODE(0)
 327                         | EDID_ACTIVE_OFF(0)
 328                         | EDID_COLOR_FORMAT_RGB444_YCRCB422_YCRCB422
 329                         | EDID_SRGB_SUPPORTED(1)
 330                         | EDID_PREFERRED_TIMING_EXTENDED_INFO
 331                         | EDID_DISPLAY_FREQUENCY_NON_CONTINUOUS,
 332
 333                 .established_supported_timings = {
 334                         [0] = EDID_ESTABLISHED_TIMINGS_1_640x480_60Hz,
 335                         [1] = 0,
 336                 },
 337                 .manufacturers_reserved_timing = 0,
 338                 .standard_timings_supported = {
 339                         [0 ... 15] = 0,
 340                 },
 341                 .descriptor_block_1 = {
 342                         [0] = EDID_PIXEL_CLOCK(148500000u) & 0xFF,
 343                         [1] = (EDID_PIXEL_CLOCK(148500000u) >> 8) & 0xFF,
 344
 345                         /* Horizontal Addressable Video is 1920px,
 346                            Horizontal Blanking is 280px. */
 347                         [2] = 0x80,
 348                         [3] = 0x18,
 349                         [4] = 0x71,
 350
 351                         /* Vertical Addressable Video is 1080 lines,
 352                            Vertical Blanking is 45 lines. */
 353                         [5] = 0x38,
 354                         [6] = 0x2D,
 355                         [7] = 0x40,
 356
 357                         [8] = 88u, /* Horizontal Front Porch in pixels. */
 358                         [9] = 44u, /* Horizontal Pulse Sync Width in pixels. */
 359                         [10] = 4u, /* Vertical Front Porch is 4 lines. */
 360                         [11] = 5u, /* Vertical Sync Pulse Width is 5 lines. */
 361
 362                         /* Horizontal Addressable Image Size is 1039mm,
 363                            Vertical Addressable Image Size is 584mm. */
 364                         [12] = 0x0F,
 365                         [13] = 0x48,
 366                         [14] = 0x42,
 367
 368                         [15] = 0x00, /* Horizontal Border Size is 0px. */
 369                         [16] = 0x00, /* Vertical Border Size is 0px. */
 370
 371                         /* Timing is Non-Interlaced Video,
 372                            Stereo Video is not supported,
 373                            Digital separate and syncs are requires. */
 374                         [17] = 0x1E,
 375                 },
 376                 .descriptor_block_2 = {
 377                         [0] = EDID_PIXEL_CLOCK(74250000u) & 0xFF,
 378                         [1] = (EDID_PIXEL_CLOCK(74250000u) >> 8) & 0xFF,
 379
 380                         /* Horizontal Addressable Video is 1920px,
 381                            Horizontal Blanking is 280px. */
 382                         [2] = 0x80,
 383                         [3] = 0x18,
 384                         [4] = 0x71,
 385
 386                         /* Vertical Addressable Video is 540 lines,
 387                            Vertical Blanking is 22 lines. */
 388                         [5] = 0x1C,
 389                         [6] = 0x16,
 390                         [7] = 0x20,
 391
 392                         [8] = 88u,   /* Horizontal Front Porch in pixels. */
 393                         [9] = 44u,   /* Horizontal Pulse Sync Width in pixels. */
 394                         [10] = 0x25, /* Vertical Front Porch is 2 lines. */
 395                         [11] = 0x00, /* Vertical Sync Pulse Width is 5 lines. */
 396
 397                         /* Horizontal Addressable Image Size is 1039mm,
 398                            Vertical Addressable Image Size is 584mm. */
 399                         [12] = 0x0F,
 400                         [13] = 0x48,
 401                         [14] = 0x42,
 402
 403                         [15] = 0x00, /* Horizontal Border Size is 0px. */
 404                         [16] = 0x00, /* Vertical Border Size is 0px. */
 405
 406                         /* Timing is Interlaced Video,
 407                            Stereo Video is not supported,
 408                            Digital separate and syncs are requires. */
 409                         [17] = 0x9E,
 410                 },
 411                 .descriptor_block_3 = {
 412                         [0] = EDID_PIXEL_CLOCK(74250000u) & 0xFF,
 413                         [1] = (EDID_PIXEL_CLOCK(74250000u) >> 8) & 0xFF,
 414
 415                         /* Horizontal Addressable Video is 1280px,
 416                            Horizontal Blanking is 370px. */
 417                         [2] = 0x00,
 418                         [3] = 0x72,
 419                         [4] = 0x51,
 420
 421                         /* Vertical Addressable Video is 720 lines,
 422                            Vertical Blanking is 30 lines. */
 423                         [5] = 0xD0,
 424                         [6] = 0x1E,
 425                         [7] = 0x20,
 426
 427                         [8] = 110u,   /* Horizontal Front Porch in pixels. */
 428                         [9] = 40u,    /* Horizontal Pulse Sync Width in pixels. */
 429                         [10] = 0x55u, /* Vertical Front Porch is 5 lines. */
 430                         [11] = 0x00,  /* Vertical Sync Pulse Width is 5 lines. */
 431
 432                         /* Horizontal Addressable Image Size is 1039mm,
 433                            Vertical Addressable Image Size is 584mm. */
 434                         [12] = 0x0F,
 435                         [13] = 0x48,
 436                         [14] = 0x42,
 437
 438                         [15] = 0x00, /* Horizontal Border Size is 0px. */
 439                         [16] = 0x00, /* Vertical Border Size is 0px. */
 440
 441                         /* Timing is Non-Interlaced Video,
 442                            Stereo Video is not supported,
 443                            Digital separate syncs are requires. */
 444                         [17] = 0x1E,
 445                 },
 446                 .descriptor_block_4 = {
 447                         /* Display Product Name Block Tag */
 448                         [0] = 0,
 449                         [1] = 0,
 450                         [2] = 0,
 451                         [3] = 0xFC,
 452                         [4] = 0,
 453
 454                         /* Product name */
 455                         [5] = 'A',
 456                         [6] = 'B',
 457                         [7] = 'C',
 458                         [8] = ' ',
 459                         [9] = 'L',
 460                         [10] = 'C',
 461                         [11] = 'D',
 462                         [12] = '4',
 463                         [13] = '7',
 464                         [14] = 'w',
 465                         [15] = '\n',
 466                         [16] = ' ',
 467                         [17] = ' ',
 468                 },
 469                 .extension_flag = 0x0, /* No extensions */
 470         };
 471
 472         edid_raw_calc_checksum(&raw);
 473
 474         unsigned char ext[128] = {
 475                 [0] = 0x02, /* CEA 861 Extension Block Tag Code */
 476                 [1] = 0x03, /* CEA 861 Block Version */
 477
 478                 [2] = 0x18, /* Detail Timing Descriptors start 0x18 bytes from here. */
 479
 480                 /* Underscan is not supported,
 481                    Basic Audio is supported,
 482                    YCbCr 4:4:4 & YCbCr 4:2:2 are supported,
 483                    Number of native formats: 2. */
 484                 [3] = 0x72,
 485
 486                 /* Video Data Block Tag Code is 2,
 487                    Number of Short Video Descriptor Bytes is 7. */
 488                 [4] = 0x47,
 489
 490                 /* 1920x1080p 59.94/60 Hz 16 : 9 AR (CEA Format #16)
 491                    is a supported Native Format. */
 492                 [5] = 0x90,
 493
 494                 /* 1920x1080i 59.94/60 Hz 16 : 9 AR (CEA Format #5)
 495                    is a supported Native Format. */
 496                 [6] = 0x85,
 497
 498                 /* 1280x720p 59.94/60 Hz 16 : 9 AR (CEA Format #4) is a supported format. */
 499                 [7] = 0x04,
 500
 501                 /* 720x480p 59.94/60 Hz 16 : 9 AR (CEA Format #3) is a supported format. */
 502                 [8] = 0x03,
 503
 504                 /* 720x480p 59.94/60 Hz 4 : 3 AR (CEA Format #2) is a supported format. */
 505                 [9] = 0x02,
 506
 507                 /* 720x480i 59.94/60 Hz 16 : 9 AR (CEA Format #7) is a supported format. */
 508                 [10] = 0x07,
 509
 510                 /* 720x480i 59.94/60 Hz 4 : 3 AR (CEA Format #6) is a supported format. */
 511                 [11] = 0x06,
 512
 513                 /* Audio Data Block Tag Code is 1,
 514                    Number of Short Audio Descriptor Bytes is 3. */
 515                 [12] = 0x23,
 516
 517                 /* Audio Format Tag Code is 1 --- LPCM is supported,
 518                    Maximum number of audio channels is 2. */
 519                 [13] = 0x09,
 520
 521                 /* Supported Sampling Frequencies include: 48kHz; 44.1kHz & 32kHz. */
 522                 [14] = 0x07,
 523
 524                 /* Supported Sampling Bit Rates include: 24 bit; 20 bit & 16 bit. */
 525                 [15] = 0x07,
 526
 527                 /* Speaker Allocation Block Tag Code is 4,
 528                    Number of Speaker Allocation Descriptor Bytes is 3. */
 529                 [16] = 0x83,
 530
 531                 /* Speaker Allocation is Front-Left & Front-Right. */
 532                 [17] = 0x01,
 533
 534                 /* Reserved */
 535                 [18 ... 19] = 0,
 536
 537                 /* Vendor Specific Data Block Tag Code is 3,
 538                    Number of Vendor Specific Data Bytes is 5. */
 539                 [20] = 0x65,
 540
 541                 /* 24bit IEEE registration Identifier is 0x000C03. */
 542                 [21] = 0x03,
 543                 [22] = 0x0C,
 544                 [23] = 0x00,
 545
 546                 /* Vendor Specific Data is 0x10000. */
 547                 [24] = 0x01,
 548                 [25] = 0x00,
 549
 550                 /* Descriptor Block 5 [18 Bytes] */
 551
 552                 [26] = EDID_PIXEL_CLOCK(27027000u) & 0xFF,
 553                 [27] = (EDID_PIXEL_CLOCK(27027000u) >> 8) & 0xFF,
 554
 555                 /* Horizontal Addressable Video is 720px,
 556                    Horizontal Blanking is 138 px. */
 557                 [28] = 0xD0,
 558                 [29] = 0x8A,
 559                 [30] = 0x20,
 560
 561                 /* Vertical Addressable Video is 480 lines,
 562                    Vertical Blanking is 45 lines. */
 563                 [31] = 0xE0,
 564                 [32] = 0x2D,
 565                 [33] = 0x10,
 566
 567                 [34] = 16u,  /* Horizontal Front Porch in pixels. */
 568                 [35] = 62u,  /* Horizontal Sync Pulse Width in pixels. */
 569                 [36] = 0x96, /* Vertical Front Porch is 9 lines. */
 570                 [37] = 0x00, /* Vertical Sync Pulse Width is 6 lines. */
 571
 572                 /* Displayed Image Aspect Ratio is 16:9 */
 573                 [38] = 16u,
 574                 [39] = 9u,
 575                 [40] = 0u,
 576
 577                 /* Horizontal and Vertical Border Size is 0 px */
 578                 [41] = 0u,
 579                 [42] = 0u,
 580
 581                 /* Timing is Interlaced Video,
 582                    Stereo Video is not supported,
 583                    Digital Separate Syncs are required. */
 584                 [43] = 0x18,
 585
 586                 /* Descriptor Block 6 [18 Bytes] */
 587
 588                 [44] = EDID_PIXEL_CLOCK(27027000u) & 0xFF,
 589                 [45] = (EDID_PIXEL_CLOCK(27027000u) >> 8) & 0xFF,
 590
 591                 /* Horizontal Addressable Video is 720px,
 592                    Horizontal Blanking is 138 px. */
 593                 [46] = 0xD0,
 594                 [47] = 0x8A,
 595                 [48] = 0x20,
 596
 597                 /* Vertical Addressable Video is 480 lines,
 598                    Vertical Blanking is 45 lines. */
 599                 [49] = 0xE0,
 600                 [50] = 0x2D,
 601                 [51] = 0x10,
 602
 603                 [52] = 16u,  /* Horizontal Front Porch in pixels. */
 604                 [53] = 62u,  /* Horizontal Sync Pulse Width in pixels. */
 605                 [54] = 0x96, /* Vertical Front Porch is 9 lines. */
 606                 [55] = 0x00, /* Vertical Sync Pulse Width is 6 lines. */
 607
 608                 /* Displayed Image Aspect Ratio is 4:3. */
 609                 [56] = 4u,
 610                 [57] = 3u,
 611                 [58] = 0u,
 612
 613                 /* Horizontal and Vertical Border Size is 0px. */
 614                 [59] = 0u,
 615                 [60] = 0u,
 616
 617                 /* Timing is Interlaced Video,
 618                    Stereo Video is not supported,
 619                    Digital Separate Syncs are required. */
 620                 [61] = 0x18,
 621
 622                 /* Descriptor Block 7 [18 Bytes] */
 623
 624                 [62] = EDID_PIXEL_CLOCK(27027000u) & 0xFF,
 625                 [63] = (EDID_PIXEL_CLOCK(27027000u) >> 8) & 0xFF,
 626
 627                 /* Horizontal Addressable Video is 1440px,
 628                    Horizontal Blanking is 276 px. */
 629                 [64] = 0xA0,
 630                 [65] = 0x14,
 631                 [66] = 0x51,
 632
 633                 /* Vertical Addressable Video is 240 lines,
 634                    Vertical Blanking is 23 lines. */
 635                 [67] = 0xF0,
 636                 [68] = 0x16,
 637                 [69] = 0x00,
 638
 639                 [70] = 38u,  /* Horizontal Front Porch in pixels. */
 640                 [71] = 124u, /* Horizontal Sync Pulse Width in pixels. */
 641                 [72] = 0x43, /* Vertical Front Porch is 9 lines. */
 642                 [73] = 0x00, /* Vertical Sync Pulse Width is 6 lines. */
 643
 644                 /* Displayed Image Aspect Ratio is 16:9 */
 645                 [74] = 16u,
 646                 [75] = 9u,
 647                 [76] = 0u,
 648
 649                 /* Horizontal and Vertical Border Size is 0px. */
 650                 [77] = 0u,
 651                 [78] = 0u,
 652
 653                 /* Timing is Interlaced Video,
 654                    Stereo Video is not supported,
 655                    Digital Separate Syncs are required. */
 656                 [79] = 0x98,
 657
 658                 /* Descriptor Block 8 [18 Bytes] */
 659
 660                 [80] = EDID_PIXEL_CLOCK(27027000u) & 0xFF,
 661                 [81] = (EDID_PIXEL_CLOCK(27027000u) >> 8) & 0xFF,
 662
 663                 /* Horizontal Addressable Video is 1440px,
 664                    Horizontal Blanking is 276 px. */
 665                 [82] = 0xA0,
 666                 [83] = 0x14,
 667                 [84] = 0x51,
 668
 669                 /* Vertical Addressable Video is 240 lines,
 670                    Vertical Blanking is 23 lines. */
 671                 [85] = 0xF0,
 672                 [86] = 0x16,
 673                 [87] = 0x00,
 674
 675                 [88] = 38u,  /* Horizontal Front Porch in pixels. */
 676                 [89] = 124u, /* Horizontal Sync Pulse Width in pixels. */
 677                 [90] = 0x43, /* Vertical Front Porch is 9 lines. */
 678                 [91] = 0x00, /* Vertical Sync Pulse Width is 6 lines. */
 679
 680                 /* Displayed Image Aspect Ratio is 4:3. */
 681                 [92] = 4u,
 682                 [93] = 3u,
 683                 [94] = 0u,
 684
 685                 /* Horizontal and Vertical Border Size is 0px. */
 686                 [95] = 0u,
 687                 [96] = 0u,
 688
 689                 /* Timing is Interlaced Video,
 690                    Stereo Video is not supported,
 691                    Digital Separate Syncs are required. */
 692                 [97] = 0x98,
 693
 694                 [99 ... 126] = 0};
 695
 696         ext[127] = get_raw_edid_checksum(ext);
 697
 698         *state = malloc(sizeof(struct test_state));
 699
 700         struct test_state ts = {.data_size = sizeof(raw) + sizeof(ext),
 701                                 .data = malloc(sizeof(raw) + sizeof(ext))};
 702
 703         memcpy(ts.data, &raw, sizeof(raw));
 704         memcpy(ts.data + sizeof(raw), &ext[0], sizeof(ext));
 705
 706         memcpy(*state, &ts, sizeof(ts));
 707
 708         return 0;
 709 }
 710
 711 /* Test decoding of EDID frame with one extension. */
 712 static void test_decode_edid_dtv_frame_with_extension(void **state)
 713 {
 714         struct edid out;
 715         struct test_state *ts = *state;
 716
 717         /* In real-life situations frames often are not 100% conformant,
 718            but are at least correct when it comes to key data fields. */
 719         assert_int_equal(EDID_CONFORMANT,
 720                          decode_edid((unsigned char *)ts->data, ts->data_size, &out));
 721
 722         assert_int_equal(32, out.framebuffer_bits_per_pixel);
 723         assert_int_equal(8, out.panel_bits_per_color);
 724         assert_int_equal(24, out.panel_bits_per_pixel);
 725         assert_int_equal(0, out.link_clock);
 726         assert_int_equal(1920, out.x_resolution);
 727         assert_int_equal(1080, out.y_resolution);
 728         assert_int_equal(7680, out.bytes_per_line);
 729         assert_int_equal(1, out.hdmi_monitor_detected);
 730         assert_int_equal(0, strnlen(out.ascii_string, ARRAY_SIZE(out.ascii_string)));
 731         assert_string_equal(out.manufacturer_name, EDID_MANUFACTURER_NAME);
 732
 733         /* Mode */
 734         assert_null(out.mode.name);
 735         assert_int_equal(148500, out.mode.pixel_clock);
 736         assert_int_equal(1, out.mode.lvds_dual_channel);
 737         assert_int_equal(0, out.mode.refresh);
 738         assert_int_equal(1920, out.mode.ha);
 739         assert_int_equal(280, out.mode.hbl);
 740         assert_int_equal(88, out.mode.hso);
 741         assert_int_equal(44, out.mode.hspw);
 742         assert_int_equal(0, out.mode.hborder);
 743         assert_int_equal(1080, out.mode.va);
 744         assert_int_equal(45, out.mode.vbl);
 745         assert_int_equal(16, out.mode.vso);
 746         assert_int_equal(0, out.mode.vborder);
 747         assert_int_equal(43, out.mode.phsync);
 748         assert_int_equal(43, out.mode.pvsync);
 749         assert_int_equal(0, out.mode.x_mm);
 750         assert_int_equal(0, out.mode.y_mm);
 751
 752         assert_int_equal(1, out.mode_is_supported[EDID_MODE_640x480_60Hz]);
 753         assert_int_equal(0, out.mode_is_supported[EDID_MODE_720x480_60Hz]);
 754         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1280x720_60Hz]);
 755         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1920x1080_60Hz]);
 756 }
 757
 758
 759 /* Test decoding of EDID frame with one extension. Tested frame is modified
 760    example of base EDID frame with CEA861 extension for IT/DTV Display from
 761    VESA E-EDID Standard Release A2. */
 762 static int setup_decode_edid_it_dtv_frame_with_extension(void **state)
 763 {
 764         struct edid_raw raw = {
 765                 EDID_RAW_DEFAULT_PARAMS,
 766                 .video_input_type =
 767                         EDID_DIGITAL_VSI
 768                         | EDID_INTERFACE_HDMI_A
 769                         | EDID_COLOR_BIT_DEPTH_8B,
 770                 .horizontal_size = 121, /* Aspect ratio 16:9 in landscape */
 771                 .vertical_size = 68,    /* Landscape flag */
 772                 .display_gamma = 120,   /* 220% */
 773                 .supported_features =
 774                         EDID_STANDBY_MODE(0)
 775                         | EDID_SUSPEND_MODE(0)
 776                         | EDID_ACTIVE_OFF(0)
 777                         | EDID_COLOR_FORMAT_RGB444_YCRCB422_YCRCB422
 778                         | EDID_SRGB_SUPPORTED(1)
 779                         | EDID_PREFERRED_TIMING_EXTENDED_INFO
 780                         | EDID_DISPLAY_FREQUENCY_NON_CONTINUOUS,
 781                 .established_supported_timings = {
 782                         [0] = EDID_ESTABLISHED_TIMINGS_1_800x600_60Hz
 783                               | EDID_ESTABLISHED_TIMINGS_1_800x600_56Hz
 784                               | EDID_ESTABLISHED_TIMINGS_1_640x480_75Hz
 785                               | EDID_ESTABLISHED_TIMINGS_1_640x480_72Hz
 786                               | EDID_ESTABLISHED_TIMINGS_1_640x480_67Hz
 787                               | EDID_ESTABLISHED_TIMINGS_1_640x480_60Hz
 788                               | EDID_ESTABLISHED_TIMINGS_1_720x400_88Hz
 789                               | EDID_ESTABLISHED_TIMINGS_1_720x400_70Hz,
 790                         [1] = EDID_ESTABLISHED_TIMINGS_2_1280x1024_75Hz
 791                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_75Hz
 792                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_70Hz
 793                               | EDID_ESTABLISHED_TIMINGS_2_1024x768_60Hz
 794                               | EDID_ESTABLISHED_TIMINGS_2_832x624_75Hz
 795                               | EDID_ESTABLISHED_TIMINGS_2_800x600_75Hz
 796                               | EDID_ESTABLISHED_TIMINGS_2_800x600_72Hz,
 797                 },
 798                 .manufacturers_reserved_timing = EDID_MANUFACTURERS_TIMINGS_1152x870_75Hz,
 799                 .standard_timings_supported = {
 800                         [0] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 801                         [1] = EDID_ASPECT_RATIO_5_4 | EDID_FIELD_REFRESH_RATE(85),
 802
 803                         [2] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 804                         [3] = EDID_ASPECT_RATIO_5_4 | EDID_FIELD_REFRESH_RATE(60),
 805
 806                         [4] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 807                         [5] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(85),
 808
 809                         [6] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1280),
 810                         [7] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(60),
 811
 812                         [8] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(1024),
 813                         [9] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(85),
 814
 815                         [10] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(848),
 816                         [11] = EDID_ASPECT_RATIO_16_9 | EDID_FIELD_REFRESH_RATE(60),
 817
 818                         [12] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(800),
 819                         [13] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(60),
 820
 821                         [14] = EDID_HORIZONTAL_ACCESSIBLE_PIXELS(640),
 822                         [15] = EDID_ASPECT_RATIO_4_3 | EDID_FIELD_REFRESH_RATE(60),
 823                 },
 824                 .descriptor_block_1 = {
 825                         [0] = EDID_PIXEL_CLOCK(85500000u) & 0xFF,
 826                         [1] = (EDID_PIXEL_CLOCK(85500000u) >> 8) & 0xFF,
 827
 828                         /* Horizontal Addressable Video is 1360px,
 829                            Horizontal Blanking is 432px. */
 830                         [2] = 0x50,
 831                         [3] = 0xB0,
 832                         [4] = 0x51,
 833
 834                         /* Vertical Addressable Video is 768 lines,
 835                            Vertical Blanking is 27 lines. */
 836                         [5] = 0x00,
 837                         [6] = 0x1B,
 838                         [7] = 0x30,
 839
 840                         [8] = 64u,   /* Horizontal Front Porch in pixels. */
 841                         [9] = 112u,  /* Horizontal Pulse Sync Width in pixels. */
 842                         [10] = 0x36, /* Vertical Front Porch is 3 lines. */
 843                         [11] = 0u,   /* Vertical Sync Pulse Width is 6 lines. */
 844
 845                         /* Horizontal Addressable Image Size is 1214mm,
 846                            Vertical Addressable Image Size is 683mm. */
 847                         [12] = 0xBE,
 848                         [13] = 0xAB,
 849                         [14] = 0x42,
 850
 851                         [15] = 0x00, /* Horizontal border size is 0px. */
 852                         [16] = 0x00, /* Vertical Border Size is 0px. */
 853
 854                         /* Timing is Non-Interlaced Video,
 855                            Stereo Video is not supported,
 856                            Digital separate and syncs are requires. */
 857                         [17] = 0x1E,
 858                 },
 859                 .descriptor_block_2 = {
 860                         [0] = EDID_PIXEL_CLOCK(74250000u) & 0xFF,
 861                         [1] = (EDID_PIXEL_CLOCK(74250000u) >> 8) & 0xFF,
 862
 863                         /* Horizontal Addressable Video is 1280px,
 864                            Horizontal Blanking is 370px. */
 865                         [2] = 0x00,
 866                         [3] = 0x72,
 867                         [4] = 0x51,
 868
 869                         /* Vertical Addressable Video is 720 lines,
 870                            Vertical Blanking is 30 lines. */
 871                         [5] = 0xD0,
 872                         [6] = 0x1E,
 873                         [7] = 0x20,
 874
 875                         [8] = 110u,  /* Horizontal Front Porch in pixels. */
 876                         [9] = 40u,   /* Horizontal Pulse Sync Width in pixels. */
 877                         [10] = 0x55, /* Vertical Front Porch is 5 lines. */
 878                         [11] = 0x00, /* Vertical Sync Pulse Width is 5 lines. */
 879
 880                         /* Horizontal Addressable Image Size is 1214mm,
 881                            Vertical Addressable Image Size is 683mm. */
 882                         [12] = 0xBE,
 883                         [13] = 0xAB,
 884                         [14] = 0x42,
 885
 886                         [15] = 0x00, /* Horizontal border size is 0px. */
 887                         [16] = 0x00, /* Vertical Border Size is 0px. */
 888
 889                         /* Timing is Non-Interlaced Video,
 890                            Stereo Video is not supported,
 891                            Digital separate and syncs are required. */
 892                         [17] = 0x1E,
 893                 },
 894                 .descriptor_block_3 = {
 895                         /* Established timings III Block Tag */
 896                         [0 ... 2] = 0u,
 897                         [3] = 0xF7,
 898                         [4] = 0u,
 899
 900                         /* VESA DMT Standard Version #10 */
 901                         [5] = 10u,
 902
 903                         /*
 904                          * 640x350@85Hz,
 905                          * 640x400@85Hz,
 906                          * 720x400@85Hz,
 907                          * 640x480@85Hz,
 908                          * 800x600@85Hz,
 909                          * 1024x768@85Hz,
 910                          * 1152x864@75Hz are supported.
 911                          */
 912                         [6] = 0x7F,
 913
 914                         /*
 915                          * 1280x960@60Hz,
 916                          * 1280x960@85Hz,
 917                          * 1280x1024@60Hz,
 918                          * 1280x1024@85Hz
 919                          */
 920                         [7] = 0x0F,
 921
 922                         /*
 923                          * 1400x1050@60Hz (Normal Blanking),
 924                          * 1400x1050@75Hz are supported.
 925                          */
 926                         [8] = 0x03,
 927
 928                         /*
 929                          * 1400x1050@85Hz,
 930                          * 1600x1200@60Hz,
 931                          * 1600x1200@65Hz,
 932                          * 1600x1200@70Hz are supported.
 933                          */
 934                         [9] = 0x87,
 935
 936                         /*
 937                          * 1600x1200@75Hz,
 938                          * 1600x1200@85Hz are supported.
 939                          */
 940                         [10] = 0xC0,
 941
 942                         /* 1920 PC Timings are not supported. */
 943                         [11] = 0u,
 944
 945                         /* Reserved */
 946                         [12 ... 17] = 0,
 947                 },
 948                 .descriptor_block_4 = {
 949                         /* Display Product Name Block Tag */
 950                         [0] = 0,
 951                         [1] = 0,
 952                         [2] = 0,
 953                         [3] = 0xFC,
 954                         [4] = 0,
 955
 956                         /* Product name */
 957                         [5] = 'A',
 958                         [6] = 'B',
 959                         [7] = 'C',
 960                         [8] = ' ',
 961                         [9] = 'P',
 962                         [10] = 'L',
 963                         [11] = 'A',
 964                         [12] = '5',
 965                         [13] = '5',
 966                         [14] = '\n',
 967                         [15] = ' ',
 968                         [16] = ' ',
 969                         [17] = ' ',
 970                 },
 971                 .extension_flag = 0x0, /* No extensions */
 972         };
 973
 974         edid_raw_calc_checksum(&raw);
 975
 976         unsigned char ext[128] = {
 977                 [0] = 0x02, /* CEA 861 Extension Block Tag Code */
 978                 [1] = 0x03, /* CEA 861 Block Version */
 979                 [2] = 0x17, /* Detail Timing Descriptors start 0x17 bytesfrom here */
 980
 981                 /* Underscan is supported,
 982                    Basic Audio is supported,
 983                    YCbCr 4:4:4 & YCbCr 4:2:2 are supported,
 984                    Number of native formats: 0. */
 985                 [3] = 0xF0,
 986
 987                 /* Video Data Block Tag Code is 2.
 988                    Number of Short Video Descriptor Bytes is 6. */
 989                 [4] = 0x46,
 990
 991                 /* 1920x1080i 59.94/60 Hz 16 : 9 AR (CEA Format #5) is a supported format. */
 992                 [5] = 0x05,
 993
 994                 /* 1280x720p 59.94/60 Hz 16 : 9 AR (CEA Format #4) is a supported format. */
 995                 [6] = 0x04,
 996
 997                 /* 720x480p 59.94/60 Hz 16 : 9 AR (CEA Format #3) is a supported format. */
 998                 [7] = 0x03,
 999
1000                 /* 720x480p 59.94/60 Hz 4 : 3 AR (CEA Format #2) is a supported format. */
1001                 [8] = 0x02,
1002
1003                 /* 720x480i 59.94/60 Hz 16 : 9 AR (CEA Format #7) is a supported format. */
1004                 [9] = 0x07,
1005
1006                 /* 720x480i 59.94/60 Hz 4 : 3 AR (CEA Format #6) is a supported format. */
1007                 [10] = 0x06,
1008
1009                 /* Audio Data Block Tag Code is 1,
1010                    Number of Short Audio Descriptor Bytes is 3. */
1011                 [11] = 0x23,
1012
1013                 /* Audio Format Tag Code is 1 --- LPCM is supported,
1014                    Maximum number of audio channels is 2. */
1015                 [12] = 0x09,
1016
1017                 /* Supported Sampling Frequencies include: 48kHz; 44.1kHz & 32kHz. */
1018                 [13] = 0x07,
1019
1020                 /* Supported Sampling Bit Rates include: 24 bit; 20 bit & 16 bit. */
1021                 [14] = 0x07,
1022
1023                 /* Speaker Allocation Block Tag Code is 4,
1024                    Number of Speaker Allocation Descriptor Bytes is 3. */
1025                 [15] = 0x83,
1026
1027                 /* Speaker Allocation is Front-Left & Front-Right */
1028                 [16] = 0x01,
1029
1030                 /* Reserved */
1031                 [17 ... 18] = 0,
1032
1033                 /* Vendor Specific Data Block Tag Code is 3,
1034                    Number of Vendor Specific Data Bytes is 5. */
1035                 [19] = 0x65,
1036
1037                 /* 24bit IEEE registration Identifier is 0x000C03. */
1038                 [20] = 0x03,
1039                 [21] = 0x0C,
1040                 [22] = 0x00,
1041
1042                 /* Vendor Specific Data is 0x10000. */
1043                 [23] = 0x01,
1044                 [24] = 0x00,
1045
1046                 /* Descriptor Block 5 [18 Bytes] */
1047
1048                 [25] = EDID_PIXEL_CLOCK(74250000u) & 0xFF,
1049                 [26] = (EDID_PIXEL_CLOCK(74250000u) >> 8) & 0xFF,
1050
1051                 /* Horizontal Addressable Video is 1920px,
1052                    Horizontal Blanking is 280px. */
1053                 [27] = 0x80,
1054                 [28] = 0x18,
1055                 [29] = 0x71,
1056
1057                 /* Vertical Addressable Video is 540 lines,
1058                    Vertical Blanking is 22 lines. */
1059                 [30] = 0x1C,
1060                 [31] = 0x16,
1061                 [32] = 0x20,
1062
1063                 [33] = 88u,  /* Horizontal Front Porch in pixels. */
1064                 [34] = 44u,  /* Horizontal Sync Pulse Width in pixels. */
1065                 [35] = 0x25, /* Vertical Front Porch is 2 lines. */
1066                 [36] = 0x00, /* Vertical Sync Pulse Width is 5 lines. */
1067
1068                 /* Image size: 1039mm x 584mm */
1069                 [37] = 0x0F,
1070                 [38] = 0x48,
1071                 [39] = 0x42,
1072
1073                 /* Horizontal and Vertical Border Size is 0px. */
1074                 [40] = 0u,
1075                 [41] = 0u,
1076
1077                 /* Timing is Interlaced Video,
1078                    Stereo Video is not supported,
1079                    Digital Separate Syncs are required. */
1080                 [42] = 0x9E,
1081
1082                 /* Descriptor Block 6 [18 Bytes] */
1083
1084                 [43] = EDID_PIXEL_CLOCK(74250000u) & 0xFF,
1085                 [44] = (EDID_PIXEL_CLOCK(74250000u) >> 8) & 0xFF,
1086
1087                 /* Horizontal Addressable Video is 1280px,
1088                    Horizontal Blanking is 370 px. */
1089                 [45] = 0x00,
1090                 [46] = 0x72,
1091                 [47] = 0x51,
1092
1093                 /* Vertical Addressable Video is 720 lines,
1094                    Vertical Blanking is 30 lines. */
1095                 [48] = 0xD0,
1096                 [49] = 0x1E,
1097                 [50] = 0x20,
1098
1099                 [51] = 110u, /* Horizontal Front Porch in pixels. */
1100                 [52] = 40u,  /* Horizontal Sync Pulse Width in pixels. */
1101                 [53] = 0x55, /* Vertical Front Porch is 5 lines. */
1102                 [54] = 0x00, /* Vertical Sync Pulse Width is 5 lines. */
1103
1104                 /* Image size: 1039mm x 584mm */
1105                 [55] = 0x0F,
1106                 [56] = 0x48,
1107                 [57] = 0x42,
1108
1109                 /* Horizontal and Vertical Border Size is 0px. */
1110                 [58] = 0u,
1111                 [59] = 0u,
1112
1113                 /* Timing is Non-Interlaced Video,
1114                    Stereo Video is not supported,
1115                    Digital Separate Syncs are required. */
1116                 [60] = 0x1E,
1117
1118                 /* Descriptor Block 7 [18 Bytes] */
1119
1120                 [61] = EDID_PIXEL_CLOCK(27000000u) & 0xFF,
1121                 [62] = (EDID_PIXEL_CLOCK(27000000u) >> 8) & 0xFF,
1122
1123                 /* Horizontal Addressable Video is 1440px,
1124                    Horizontal Blanking is 276 px. */
1125                 [63] = 0xA0,
1126                 [64] = 0x14,
1127                 [65] = 0x51,
1128
1129                 /* Vertical Addressable Video is 240 lines,
1130                    Vertical Blanking is 23 lines. */
1131                 [66] = 0xF0,
1132                 [67] = 0x16,
1133                 [68] = 0x00,
1134
1135                 [69] = 38u,  /* Horizontal Front Porch in pixels. */
1136                 [70] = 124u, /* Horizontal Sync Pulse Width in pixels. */
1137                 [71] = 0x43, /* Vertical Front Porch is 4 lines. */
1138                 [72] = 0x00, /* Vertical Sync Pulse Width is 3 lines. */
1139
1140                 /* Image size: 1039mm x 584mm */
1141                 [73] = 0x0F,
1142                 [74] = 0x48,
1143                 [75] = 0x42,
1144
1145                 /* Horizontal and Vertical Border Size is 0px. */
1146                 [76] = 0u,
1147                 [77] = 0u,
1148
1149                 /* Timing is Interlaced Video,
1150                    Stereo Video is not supported,
1151                    Digital Separate Syncs are required. */
1152                 [78] = 0x18,
1153
1154                 /* Descriptor Block 8 [18 Bytes] */
1155
1156                 [79] = EDID_PIXEL_CLOCK(27027000u) & 0xFF,
1157                 [80] = (EDID_PIXEL_CLOCK(27027000u) >> 8) & 0xFF,
1158
1159                 /* Horizontal Addressable Video is 1440px,
1160                    Horizontal Blanking is 276 px. */
1161                 [81] = 0xA0,
1162                 [82] = 0x14,
1163                 [83] = 0x51,
1164
1165                 /* Vertical Addressable Video is 240 lines,
1166                    Vertical Blanking is 23 lines. */
1167                 [84] = 0xF0,
1168                 [85] = 0x16,
1169                 [86] = 0x00,
1170
1171                 [87] = 38u,  /* Horizontal Front Porch in pixels. */
1172                 [88] = 124u, /* Horizontal Sync Pulse Width in pixels. */
1173                 [89] = 0x43, /* Vertical Front Porch is 4 lines. */
1174                 [90] = 0x00, /* Vertical Sync Pulse Width is 3 lines. */
1175
1176                 /* Image size: 1039mm x 584mm */
1177                 [91] = 0x0F,
1178                 [92] = 0x48,
1179                 [93] = 0x42,
1180
1181                 /* Horizontal and Vertical Border Size is 0px. */
1182                 [94] = 0u,
1183                 [95] = 0u,
1184
1185                 /* Timing is Interlaced Video,
1186                    Stereo Video is not supported,
1187                    Digital Separate Syncs are required. */
1188                 [96] = 0x98,
1189
1190                 [97 ... 126] = 0,
1191         };
1192
1193         ext[127] = get_raw_edid_checksum(ext);
1194
1195         *state = malloc(sizeof(struct test_state));
1196
1197         struct test_state ts = {.data_size = sizeof(raw) + sizeof(ext),
1198                                 .data = malloc(sizeof(raw) + sizeof(ext))};
1199
1200         memcpy(ts.data, &raw, sizeof(raw));
1201         memcpy(ts.data + sizeof(raw), &ext[0], sizeof(ext));
1202
1203         memcpy(*state, &ts, sizeof(ts));
1204
1205         return 0;
1206 }
1207
1208 static void test_decode_edid_it_dtv_frame_with_extension(void **state)
1209 {
1210         struct edid out;
1211         struct test_state *ts = *state;
1212
1213         /* In real-life situations frames often are not 100% conformant,
1214            but are at least correct when it comes to key data fields. */
1215         assert_int_equal(EDID_CONFORMANT,
1216                          decode_edid((unsigned char *)ts->data, ts->data_size, &out));
1217
1218         assert_int_equal(32, out.framebuffer_bits_per_pixel);
1219         assert_int_equal(8, out.panel_bits_per_color);
1220         assert_int_equal(24, out.panel_bits_per_pixel);
1221         assert_int_equal(0, out.link_clock);
1222         assert_int_equal(1360, out.x_resolution);
1223         assert_int_equal(768, out.y_resolution);
1224         assert_int_equal(5440, out.bytes_per_line);
1225         assert_int_equal(1, out.hdmi_monitor_detected);
1226         assert_int_equal(0, strnlen(out.ascii_string, ARRAY_SIZE(out.ascii_string)));
1227         assert_string_equal(out.manufacturer_name, EDID_MANUFACTURER_NAME);
1228
1229         /* Mode */
1230         assert_null(out.mode.name);
1231         assert_int_equal(85500, out.mode.pixel_clock);
1232         assert_int_equal(0, out.mode.lvds_dual_channel);
1233         assert_int_equal(0, out.mode.refresh);
1234         assert_int_equal(1360, out.mode.ha);
1235         assert_int_equal(432, out.mode.hbl);
1236         assert_int_equal(64, out.mode.hso);
1237         assert_int_equal(112, out.mode.hspw);
1238         assert_int_equal(0, out.mode.hborder);
1239         assert_int_equal(768, out.mode.va);
1240         assert_int_equal(27, out.mode.vbl);
1241         assert_int_equal(3, out.mode.vso);
1242         assert_int_equal(0, out.mode.vborder);
1243         assert_int_equal(43, out.mode.phsync);
1244         assert_int_equal(43, out.mode.pvsync);
1245         assert_int_equal(0, out.mode.x_mm);
1246         assert_int_equal(0, out.mode.y_mm);
1247
1248         assert_int_equal(1, out.mode_is_supported[EDID_MODE_640x480_60Hz]);
1249         assert_int_equal(0, out.mode_is_supported[EDID_MODE_720x480_60Hz]);
1250         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1280x720_60Hz]);
1251         assert_int_equal(0, out.mode_is_supported[EDID_MODE_1920x1080_60Hz]);
1252 }
1253
1254 static int teardown_edid_test(void **state)
1255 {
1256         struct test_state *ts;
1257
1258         if (*state == NULL)
1259                 return 0;
1260
1261         ts = (struct test_state *)*state;
1262
1263         free(ts->data);
1264         free(ts);
1265
1266         return 0;
1267 }
1268
1269 static void test_edid_set_framebuffer_bits_per_pixel(void **state)
1270 {
1271         struct edid out;
1272         struct test_state *ts = *state;
1273
1274         decode_edid((unsigned char *)ts->data, ts->data_size, &out);
1275
1276         edid_set_framebuffer_bits_per_pixel(&out, 16, 2);
1277
1278         assert_int_equal(16, out.framebuffer_bits_per_pixel);
1279         assert_int_equal(out.mode.ha * 2, out.bytes_per_line);
1280         assert_int_equal(out.bytes_per_line / (16 / 8), out.x_resolution);
1281         assert_int_equal(out.mode.va, out.y_resolution);
1282
1283         edid_set_framebuffer_bits_per_pixel(&out, 24, 4);
1284
1285         assert_int_equal(24, out.framebuffer_bits_per_pixel);
1286         assert_int_equal(out.mode.ha * 3, out.bytes_per_line);
1287         assert_int_equal(out.bytes_per_line / (24 / 8), out.x_resolution);
1288         assert_int_equal(out.mode.va, out.y_resolution);
1289
1290         edid_set_framebuffer_bits_per_pixel(&out, 32, 4);
1291
1292         assert_int_equal(32, out.framebuffer_bits_per_pixel);
1293         assert_int_equal(out.mode.ha * 4, out.bytes_per_line);
1294         assert_int_equal(out.bytes_per_line / (32 / 8), out.x_resolution);
1295         assert_int_equal(out.mode.va, out.y_resolution);
1296 }
1297
1298 int main(void)
1299 {
1300         const struct CMUnitTest tests[] = {
1301                 cmocka_unit_test(test_decode_edid_no_edid),
1302                 cmocka_unit_test(test_decode_edid_invalid_header),
1303                 cmocka_unit_test_setup_teardown(test_decode_edid_basic_frame,
1304                                                 setup_decode_edid_basic_frame,
1305                                                 teardown_edid_test),
1306                 cmocka_unit_test_setup_teardown(test_decode_edid_dtv_frame_with_extension,
1307                                                 setup_decode_edid_dtv_frame_with_extension,
1308                                                 teardown_edid_test),
1309                 cmocka_unit_test_setup_teardown(test_decode_edid_it_dtv_frame_with_extension,
1310                                                 setup_decode_edid_it_dtv_frame_with_extension,
1311                                                 teardown_edid_test),
1312                 cmocka_unit_test_setup_teardown(test_edid_set_framebuffer_bits_per_pixel,
1313                                                 setup_decode_edid_basic_frame,
1314                                                 teardown_edid_test),
1315         };
1316
1317         return cb_run_group_tests(tests, NULL, NULL);
1318 }
1319