drivers/gpu/drm/drm_panel_orientation_quirks.c

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * drm_panel_orientation_quirks.c -- Quirks for non-normal panel orientation
   4  *
   5  * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
   6  *
   7  * Note the quirks in this file are shared with fbdev/efifb and as such
   8  * must not depend on other drm code.
   9  */
  10
  11 #include <linux/dmi.h>
  12 #include <linux/module.h>
  13 #include <drm/drm_connector.h>
  14 #include <drm/drm_utils.h>
  15
  16 #ifdef CONFIG_DMI
  17
  18 /*
  19  * Some x86 clamshell design devices use portrait tablet screens and a display
  20  * engine which cannot rotate in hardware, so we need to rotate the fbcon to
  21  * compensate. Unfortunately these (cheap) devices also typically have quite
  22  * generic DMI data, so we match on a combination of DMI data, screen resolution
  23  * and a list of known BIOS dates to avoid false positives.
  24  */
  25
  26 struct drm_dmi_panel_orientation_data {
  27         int width;
  28         int height;
  29         const char * const *bios_dates;
  30         int orientation;
  31 };
  32
  33 static const struct drm_dmi_panel_orientation_data gpd_micropc = {
  34         .width = 720,
  35         .height = 1280,
  36         .bios_dates = (const char * const []){ "04/26/2019",
  37                 NULL },
  38         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  39 };
  40
  41 static const struct drm_dmi_panel_orientation_data gpd_onemix2s = {
  42         .width = 1200,
  43         .height = 1920,
  44         .bios_dates = (const char * const []){ "05/21/2018", "10/26/2018",
  45                 "03/04/2019", NULL },
  46         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  47 };
  48
  49 static const struct drm_dmi_panel_orientation_data gpd_pocket = {
  50         .width = 1200,
  51         .height = 1920,
  52         .bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
  53                 "07/05/2017", "08/07/2017", NULL },
  54         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  55 };
  56
  57 static const struct drm_dmi_panel_orientation_data gpd_pocket2 = {
  58         .width = 1200,
  59         .height = 1920,
  60         .bios_dates = (const char * const []){ "06/28/2018", "08/28/2018",
  61                 "12/07/2018", NULL },
  62         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  63 };
  64
  65 static const struct drm_dmi_panel_orientation_data gpd_win = {
  66         .width = 720,
  67         .height = 1280,
  68         .bios_dates = (const char * const []){
  69                 "10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
  70                 "02/21/2017", "03/20/2017", "05/25/2017", NULL },
  71         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  72 };
  73
  74 static const struct drm_dmi_panel_orientation_data gpd_win2 = {
  75         .width = 720,
  76         .height = 1280,
  77         .bios_dates = (const char * const []){
  78                 "12/07/2017", "05/24/2018", "06/29/2018", NULL },
  79         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  80 };
  81
  82 static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
  83         .width = 800,
  84         .height = 1280,
  85         .bios_dates = (const char * const []){ "10/16/2015", NULL },
  86         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  87 };
  88
  89 static const struct drm_dmi_panel_orientation_data onegx1_pro = {
  90         .width = 1200,
  91         .height = 1920,
  92         .bios_dates = (const char * const []){ "12/17/2020", NULL },
  93         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  94 };
  95
  96 static const struct drm_dmi_panel_orientation_data lcd720x1280_rightside_up = {
  97         .width = 720,
  98         .height = 1280,
  99         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 100 };
 101
 102 static const struct drm_dmi_panel_orientation_data lcd800x1280_leftside_up = {
 103         .width = 800,
 104         .height = 1280,
 105         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
 106 };
 107
 108 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = {
 109         .width = 800,
 110         .height = 1280,
 111         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 112 };
 113
 114 static const struct drm_dmi_panel_orientation_data lcd1080x1920_leftside_up = {
 115         .width = 1080,
 116         .height = 1920,
 117         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
 118 };
 119
 120 static const struct drm_dmi_panel_orientation_data lcd1200x1920_rightside_up = {
 121         .width = 1200,
 122         .height = 1920,
 123         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 124 };
 125
 126 static const struct drm_dmi_panel_orientation_data lcd1280x1920_rightside_up = {
 127         .width = 1280,
 128         .height = 1920,
 129         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 130 };
 131
 132 static const struct drm_dmi_panel_orientation_data lcd1600x2560_leftside_up = {
 133         .width = 1600,
 134         .height = 2560,
 135         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
 136 };
 137
 138 static const struct drm_dmi_panel_orientation_data lcd1600x2560_rightside_up = {
 139         .width = 1600,
 140         .height = 2560,
 141         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 142 };
 143
 144 static const struct dmi_system_id orientation_data[] = {
 145         {       /* Acer One 10 (S1003) */
 146                 .matches = {
 147                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
 148                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
 149                 },
 150                 .driver_data = (void *)&lcd800x1280_rightside_up,
 151         }, {    /* Acer Switch V 10 (SW5-017) */
 152                 .matches = {
 153                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
 154                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SW5-017"),
 155                 },
 156                 .driver_data = (void *)&lcd800x1280_rightside_up,
 157         }, {    /* Anbernic Win600 */
 158                 .matches = {
 159                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Anbernic"),
 160                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Win600"),
 161                 },
 162                 .driver_data = (void *)&lcd720x1280_rightside_up,
 163         }, {    /* Asus T100HA */
 164                 .matches = {
 165                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 166                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
 167                 },
 168                 .driver_data = (void *)&lcd800x1280_leftside_up,
 169         }, {    /* Asus T101HA */
 170                 .matches = {
 171                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 172                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T101HA"),
 173                 },
 174                 .driver_data = (void *)&lcd800x1280_rightside_up,
 175         }, {    /* Asus T103HAF */
 176                 .matches = {
 177                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 178                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T103HAF"),
 179                 },
 180                 .driver_data = (void *)&lcd800x1280_rightside_up,
 181         }, {    /* AYA NEO 2021 */
 182                 .matches = {
 183                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AYADEVICE"),
 184                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "AYA NEO 2021"),
 185                 },
 186                 .driver_data = (void *)&lcd800x1280_rightside_up,
 187         }, {    /* AYA NEO AIR */
 188                 .matches = {
 189                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AYANEO"),
 190                   DMI_MATCH(DMI_PRODUCT_NAME, "AIR"),
 191                 },
 192                 .driver_data = (void *)&lcd1080x1920_leftside_up,
 193         }, {    /* AYA NEO NEXT */
 194                 .matches = {
 195                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AYANEO"),
 196                   DMI_MATCH(DMI_BOARD_NAME, "NEXT"),
 197                 },
 198                 .driver_data = (void *)&lcd800x1280_rightside_up,
 199         }, {    /* Chuwi HiBook (CWI514) */
 200                 .matches = {
 201                         DMI_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
 202                         DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
 203                         /* Above matches are too generic, add bios-date match */
 204                         DMI_MATCH(DMI_BIOS_DATE, "05/07/2016"),
 205                 },
 206                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 207         }, {    /* Chuwi Hi10 Pro (CWI529) */
 208                 .matches = {
 209                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
 210                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Hi10 pro tablet"),
 211                 },
 212                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 213         }, {    /* Dynabook K50 */
 214                 .matches = {
 215                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dynabook Inc."),
 216                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "dynabook K50/FR"),
 217                 },
 218                 .driver_data = (void *)&lcd800x1280_leftside_up,
 219         }, {    /* GPD MicroPC (generic strings, also match on bios date) */
 220                 .matches = {
 221                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 222                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 223                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 224                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 225                 },
 226                 .driver_data = (void *)&gpd_micropc,
 227         }, {    /* GPD MicroPC (later BIOS versions with proper DMI strings) */
 228                 .matches = {
 229                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
 230                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MicroPC"),
 231                 },
 232                 .driver_data = (void *)&lcd720x1280_rightside_up,
 233         }, {    /* GPD Win Max */
 234                 .matches = {
 235                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
 236                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1619-01"),
 237                 },
 238                 .driver_data = (void *)&lcd800x1280_rightside_up,
 239         }, {    /*
 240                  * GPD Pocket, note that the DMI data is less generic then
 241                  * it seems, devices with a board-vendor of "AMI Corporation"
 242                  * are quite rare, as are devices which have both board- *and*
 243                  * product-id set to "Default String"
 244                  */
 245                 .matches = {
 246                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 247                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 248                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 249                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 250                 },
 251                 .driver_data = (void *)&gpd_pocket,
 252         }, {    /* GPD Pocket 2 (generic strings, also match on bios date) */
 253                 .matches = {
 254                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 255                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 256                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 257                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 258                 },
 259                 .driver_data = (void *)&gpd_pocket2,
 260         }, {    /* GPD Win (same note on DMI match as GPD Pocket) */
 261                 .matches = {
 262                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 263                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 264                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 265                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 266                 },
 267                 .driver_data = (void *)&gpd_win,
 268         }, {    /* GPD Win 2 (too generic strings, also match on bios date) */
 269                 .matches = {
 270                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 271                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 272                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 273                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 274                 },
 275                 .driver_data = (void *)&gpd_win2,
 276         }, {    /* GPD Win 3 */
 277                 .matches = {
 278                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
 279                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1618-03")
 280                 },
 281                 .driver_data = (void *)&lcd720x1280_rightside_up,
 282         }, {    /* I.T.Works TW891 */
 283                 .matches = {
 284                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
 285                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
 286                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
 287                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
 288                 },
 289                 .driver_data = (void *)&itworks_tw891,
 290         }, {    /* KD Kurio Smart C15200 2-in-1 */
 291                 .matches = {
 292                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "KD Interactive"),
 293                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Kurio Smart"),
 294                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "KDM960BCP"),
 295                 },
 296                 .driver_data = (void *)&lcd800x1280_rightside_up,
 297         }, {    /*
 298                  * Lenovo Ideapad Miix 310 laptop, only some production batches
 299                  * have a portrait screen, the resolution checks makes the quirk
 300                  * apply only to those batches.
 301                  */
 302                 .matches = {
 303                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 304                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
 305                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
 306                 },
 307                 .driver_data = (void *)&lcd800x1280_rightside_up,
 308         }, {    /* Lenovo Ideapad Miix 320 */
 309                 .matches = {
 310                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 311                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
 312                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
 313                 },
 314                 .driver_data = (void *)&lcd800x1280_rightside_up,
 315         }, {    /* Lenovo Ideapad D330-10IGM (HD) */
 316                 .matches = {
 317                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 318                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
 319                 },
 320                 .driver_data = (void *)&lcd800x1280_rightside_up,
 321         }, {    /* Lenovo Ideapad D330-10IGM (FHD) */
 322                 .matches = {
 323                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 324                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
 325                 },
 326                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 327         }, {    /* Lenovo Ideapad D330-10IGL (HD) */
 328                 .matches = {
 329                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 330                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGL"),
 331                 },
 332                 .driver_data = (void *)&lcd800x1280_rightside_up,
 333         }, {    /* Lenovo IdeaPad Duet 3 10IGL5 */
 334                 .matches = {
 335                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 336                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Duet 3 10IGL5"),
 337                 },
 338                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 339         }, {    /* Lenovo Yoga Book X90F / X90L */
 340                 .matches = {
 341                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
 342                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
 343                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
 344                 },
 345                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 346         }, {    /* Lenovo Yoga Book X91F / X91L */
 347                 .matches = {
 348                   /* Non exact match to match F + L versions */
 349                   DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
 350                 },
 351                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 352         }, {    /* Lenovo Yoga Tablet 2 830F / 830L */
 353                 .matches = {
 354                  /*
 355                   * Note this also matches the Lenovo Yoga Tablet 2 1050F/L
 356                   * since that uses the same mainboard. The resolution match
 357                   * will limit this to only matching on the 830F/L. Neither has
 358                   * any external video outputs so those are not a concern.
 359                   */
 360                  DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
 361                  DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
 362                  DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
 363                  /* Partial match on beginning of BIOS version */
 364                  DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
 365                 },
 366                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 367         }, {    /* Lenovo Yoga Tab 3 X90F */
 368                 .matches = {
 369                  DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
 370                  DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
 371                  DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
 372                 },
 373                 .driver_data = (void *)&lcd1600x2560_rightside_up,
 374         }, {    /* Nanote UMPC-01 */
 375                 .matches = {
 376                  DMI_MATCH(DMI_SYS_VENDOR, "RWC CO.,LTD"),
 377                  DMI_MATCH(DMI_PRODUCT_NAME, "UMPC-01"),
 378                 },
 379                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 380         }, {    /* OneGX1 Pro */
 381                 .matches = {
 382                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SYSTEM_MANUFACTURER"),
 383                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SYSTEM_PRODUCT_NAME"),
 384                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Default string"),
 385                 },
 386                 .driver_data = (void *)&onegx1_pro,
 387         }, {    /* OneXPlayer */
 388                 .matches = {
 389                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ONE-NETBOOK TECHNOLOGY CO., LTD."),
 390                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ONE XPLAYER"),
 391                 },
 392                 .driver_data = (void *)&lcd1600x2560_leftside_up,
 393         }, {    /* Samsung GalaxyBook 10.6 */
 394                 .matches = {
 395                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
 396                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Galaxy Book 10.6"),
 397                 },
 398                 .driver_data = (void *)&lcd1280x1920_rightside_up,
 399         }, {    /* Valve Steam Deck */
 400                 .matches = {
 401                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Valve"),
 402                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Jupiter"),
 403                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "1"),
 404                 },
 405                 .driver_data = (void *)&lcd800x1280_rightside_up,
 406         }, {    /* VIOS LTH17 */
 407                 .matches = {
 408                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
 409                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 410                 },
 411                 .driver_data = (void *)&lcd800x1280_rightside_up,
 412         }, {    /* One Mix 2S (generic strings, also match on bios date) */
 413                 .matches = {
 414                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 415                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 416                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 417                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 418                 },
 419                 .driver_data = (void *)&gpd_onemix2s,
 420         },
 421         {}
 422 };
 423
 424 /**
 425  * drm_get_panel_orientation_quirk - Check for panel orientation quirks
 426  * @width: width in pixels of the panel
 427  * @height: height in pixels of the panel
 428  *
 429  * This function checks for platform specific (e.g. DMI based) quirks
 430  * providing info on panel_orientation for systems where this cannot be
 431  * probed from the hard-/firm-ware. To avoid false-positive this function
 432  * takes the panel resolution as argument and checks that against the
 433  * resolution expected by the quirk-table entry.
 434  *
 435  * Note this function is also used outside of the drm-subsys, by for example
 436  * the efifb code. Because of this this function gets compiled into its own
 437  * kernel-module when built as a module.
 438  *
 439  * Returns:
 440  * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system,
 441  * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk.
 442  */
 443 int drm_get_panel_orientation_quirk(int width, int height)
 444 {
 445         const struct dmi_system_id *match;
 446         const struct drm_dmi_panel_orientation_data *data;
 447         const char *bios_date;
 448         int i;
 449
 450         for (match = dmi_first_match(orientation_data);
 451              match;
 452              match = dmi_first_match(match + 1)) {
 453                 data = match->driver_data;
 454
 455                 if (data->width != width ||
 456                     data->height != height)
 457                         continue;
 458
 459                 if (!data->bios_dates)
 460                         return data->orientation;
 461
 462                 bios_date = dmi_get_system_info(DMI_BIOS_DATE);
 463                 if (!bios_date)
 464                         continue;
 465
 466                 i = match_string(data->bios_dates, -1, bios_date);
 467                 if (i >= 0)
 468                         return data->orientation;
 469         }
 470
 471         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 472 }
 473 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 474
 475 #else
 476
 477 /* There are no quirks for non x86 devices yet */
 478 int drm_get_panel_orientation_quirk(int width, int height)
 479 {
 480         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 481 }
 482 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 483
 484 #endif
 485
 486 MODULE_LICENSE("Dual MIT/GPL");