Linux 6.9-rc1
[linux-2.6-microblaze.git] / 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 lcd1080x1920_rightside_up = {
121         .width = 1080,
122         .height = 1920,
123         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
124 };
125
126 static const struct drm_dmi_panel_orientation_data lcd1200x1920_rightside_up = {
127         .width = 1200,
128         .height = 1920,
129         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
130 };
131
132 static const struct drm_dmi_panel_orientation_data lcd1280x1920_rightside_up = {
133         .width = 1280,
134         .height = 1920,
135         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
136 };
137
138 static const struct drm_dmi_panel_orientation_data lcd1600x2560_leftside_up = {
139         .width = 1600,
140         .height = 2560,
141         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
142 };
143
144 static const struct drm_dmi_panel_orientation_data lcd1600x2560_rightside_up = {
145         .width = 1600,
146         .height = 2560,
147         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
148 };
149
150 static const struct dmi_system_id orientation_data[] = {
151         {       /* Acer One 10 (S1003) */
152                 .matches = {
153                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
154                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
155                 },
156                 .driver_data = (void *)&lcd800x1280_rightside_up,
157         }, {    /* Acer Switch V 10 (SW5-017) */
158                 .matches = {
159                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
160                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SW5-017"),
161                 },
162                 .driver_data = (void *)&lcd800x1280_rightside_up,
163         }, {    /* Anbernic Win600 */
164                 .matches = {
165                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Anbernic"),
166                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Win600"),
167                 },
168                 .driver_data = (void *)&lcd720x1280_rightside_up,
169         }, {    /* Asus T100HA */
170                 .matches = {
171                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
172                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
173                 },
174                 .driver_data = (void *)&lcd800x1280_leftside_up,
175         }, {    /* Asus T101HA */
176                 .matches = {
177                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
178                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T101HA"),
179                 },
180                 .driver_data = (void *)&lcd800x1280_rightside_up,
181         }, {    /* Asus T103HAF */
182                 .matches = {
183                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
184                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T103HAF"),
185                 },
186                 .driver_data = (void *)&lcd800x1280_rightside_up,
187         }, {    /* AYA NEO 2021 */
188                 .matches = {
189                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AYADEVICE"),
190                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "AYA NEO 2021"),
191                 },
192                 .driver_data = (void *)&lcd800x1280_rightside_up,
193         }, {    /* AYA NEO AIR */
194                 .matches = {
195                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AYANEO"),
196                   DMI_MATCH(DMI_PRODUCT_NAME, "AIR"),
197                 },
198                 .driver_data = (void *)&lcd1080x1920_leftside_up,
199         }, {    /* AYA NEO NEXT */
200                 .matches = {
201                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AYANEO"),
202                   DMI_MATCH(DMI_BOARD_NAME, "NEXT"),
203                 },
204                 .driver_data = (void *)&lcd800x1280_rightside_up,
205         }, {    /* Chuwi HiBook (CWI514) */
206                 .matches = {
207                         DMI_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
208                         DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
209                         /* Above matches are too generic, add bios-date match */
210                         DMI_MATCH(DMI_BIOS_DATE, "05/07/2016"),
211                 },
212                 .driver_data = (void *)&lcd1200x1920_rightside_up,
213         }, {    /* Chuwi Hi10 Pro (CWI529) */
214                 .matches = {
215                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
216                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Hi10 pro tablet"),
217                 },
218                 .driver_data = (void *)&lcd1200x1920_rightside_up,
219         }, {    /* Dynabook K50 */
220                 .matches = {
221                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dynabook Inc."),
222                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "dynabook K50/FR"),
223                 },
224                 .driver_data = (void *)&lcd800x1280_leftside_up,
225         }, {    /* GPD MicroPC (generic strings, also match on bios date) */
226                 .matches = {
227                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
228                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
229                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
230                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
231                 },
232                 .driver_data = (void *)&gpd_micropc,
233         }, {    /* GPD MicroPC (later BIOS versions with proper DMI strings) */
234                 .matches = {
235                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
236                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MicroPC"),
237                 },
238                 .driver_data = (void *)&lcd720x1280_rightside_up,
239         }, {    /* GPD Win Max */
240                 .matches = {
241                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
242                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1619-01"),
243                 },
244                 .driver_data = (void *)&lcd800x1280_rightside_up,
245         }, {    /*
246                  * GPD Pocket, note that the DMI data is less generic then
247                  * it seems, devices with a board-vendor of "AMI Corporation"
248                  * are quite rare, as are devices which have both board- *and*
249                  * product-id set to "Default String"
250                  */
251                 .matches = {
252                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
253                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
254                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
255                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
256                 },
257                 .driver_data = (void *)&gpd_pocket,
258         }, {    /* GPD Pocket 2 (generic strings, also match on bios date) */
259                 .matches = {
260                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
261                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
262                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
263                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
264                 },
265                 .driver_data = (void *)&gpd_pocket2,
266         }, {    /* GPD Win (same note on DMI match as GPD Pocket) */
267                 .matches = {
268                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
269                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
270                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
271                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
272                 },
273                 .driver_data = (void *)&gpd_win,
274         }, {    /* GPD Win 2 (too generic strings, also match on bios date) */
275                 .matches = {
276                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
277                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
278                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
279                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
280                 },
281                 .driver_data = (void *)&gpd_win2,
282         }, {    /* GPD Win 3 */
283                 .matches = {
284                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
285                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1618-03")
286                 },
287                 .driver_data = (void *)&lcd720x1280_rightside_up,
288         }, {    /* GPD Win Mini */
289                 .matches = {
290                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
291                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1617-01")
292                 },
293                 .driver_data = (void *)&lcd1080x1920_rightside_up,
294         }, {    /* I.T.Works TW891 */
295                 .matches = {
296                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
297                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
298                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
299                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
300                 },
301                 .driver_data = (void *)&itworks_tw891,
302         }, {    /* KD Kurio Smart C15200 2-in-1 */
303                 .matches = {
304                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "KD Interactive"),
305                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Kurio Smart"),
306                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "KDM960BCP"),
307                 },
308                 .driver_data = (void *)&lcd800x1280_rightside_up,
309         }, {    /*
310                  * Lenovo Ideapad Miix 310 laptop, only some production batches
311                  * have a portrait screen, the resolution checks makes the quirk
312                  * apply only to those batches.
313                  */
314                 .matches = {
315                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
316                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
317                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
318                 },
319                 .driver_data = (void *)&lcd800x1280_rightside_up,
320         }, {    /* Lenovo Ideapad Miix 320 */
321                 .matches = {
322                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
323                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
324                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
325                 },
326                 .driver_data = (void *)&lcd800x1280_rightside_up,
327         }, {    /* Lenovo Ideapad D330-10IGM (HD) */
328                 .matches = {
329                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
330                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
331                 },
332                 .driver_data = (void *)&lcd800x1280_rightside_up,
333         }, {    /* Lenovo Ideapad D330-10IGM (FHD) */
334                 .matches = {
335                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
336                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
337                 },
338                 .driver_data = (void *)&lcd1200x1920_rightside_up,
339         }, {    /* Lenovo Ideapad D330-10IGL (HD) */
340                 .matches = {
341                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
342                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGL"),
343                 },
344                 .driver_data = (void *)&lcd800x1280_rightside_up,
345         }, {    /* Lenovo IdeaPad Duet 3 10IGL5 */
346                 .matches = {
347                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
348                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Duet 3 10IGL5"),
349                 },
350                 .driver_data = (void *)&lcd1200x1920_rightside_up,
351         }, {    /* Lenovo Legion Go 8APU1 */
352                 .matches = {
353                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
354                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8APU1"),
355                 },
356                 .driver_data = (void *)&lcd1600x2560_leftside_up,
357         }, {    /* Lenovo Yoga Book X90F / X90L */
358                 .matches = {
359                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
360                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
361                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
362                 },
363                 .driver_data = (void *)&lcd1200x1920_rightside_up,
364         }, {    /* Lenovo Yoga Book X91F / X91L */
365                 .matches = {
366                   /* Non exact match to match F + L versions */
367                   DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
368                 },
369                 .driver_data = (void *)&lcd1200x1920_rightside_up,
370         }, {    /* Lenovo Yoga Tablet 2 830F / 830L */
371                 .matches = {
372                  /*
373                   * Note this also matches the Lenovo Yoga Tablet 2 1050F/L
374                   * since that uses the same mainboard. The resolution match
375                   * will limit this to only matching on the 830F/L. Neither has
376                   * any external video outputs so those are not a concern.
377                   */
378                  DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
379                  DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
380                  DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
381                  /* Partial match on beginning of BIOS version */
382                  DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
383                 },
384                 .driver_data = (void *)&lcd1200x1920_rightside_up,
385         }, {    /* Lenovo Yoga Tab 3 X90F */
386                 .matches = {
387                  DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
388                  DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
389                  DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
390                 },
391                 .driver_data = (void *)&lcd1600x2560_rightside_up,
392         }, {    /* Nanote UMPC-01 */
393                 .matches = {
394                  DMI_MATCH(DMI_SYS_VENDOR, "RWC CO.,LTD"),
395                  DMI_MATCH(DMI_PRODUCT_NAME, "UMPC-01"),
396                 },
397                 .driver_data = (void *)&lcd1200x1920_rightside_up,
398         }, {    /* OneGX1 Pro */
399                 .matches = {
400                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SYSTEM_MANUFACTURER"),
401                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SYSTEM_PRODUCT_NAME"),
402                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Default string"),
403                 },
404                 .driver_data = (void *)&onegx1_pro,
405         }, {    /* OneXPlayer */
406                 .matches = {
407                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ONE-NETBOOK TECHNOLOGY CO., LTD."),
408                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ONE XPLAYER"),
409                 },
410                 .driver_data = (void *)&lcd1600x2560_leftside_up,
411         }, {    /* Samsung GalaxyBook 10.6 */
412                 .matches = {
413                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
414                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Galaxy Book 10.6"),
415                 },
416                 .driver_data = (void *)&lcd1280x1920_rightside_up,
417         }, {    /* Valve Steam Deck */
418                 .matches = {
419                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Valve"),
420                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Jupiter"),
421                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "1"),
422                 },
423                 .driver_data = (void *)&lcd800x1280_rightside_up,
424         }, {    /* VIOS LTH17 */
425                 .matches = {
426                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
427                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
428                 },
429                 .driver_data = (void *)&lcd800x1280_rightside_up,
430         }, {    /* One Mix 2S (generic strings, also match on bios date) */
431                 .matches = {
432                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
433                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
434                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
435                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
436                 },
437                 .driver_data = (void *)&gpd_onemix2s,
438         },
439         {}
440 };
441
442 /**
443  * drm_get_panel_orientation_quirk - Check for panel orientation quirks
444  * @width: width in pixels of the panel
445  * @height: height in pixels of the panel
446  *
447  * This function checks for platform specific (e.g. DMI based) quirks
448  * providing info on panel_orientation for systems where this cannot be
449  * probed from the hard-/firm-ware. To avoid false-positive this function
450  * takes the panel resolution as argument and checks that against the
451  * resolution expected by the quirk-table entry.
452  *
453  * Note this function is also used outside of the drm-subsys, by for example
454  * the efifb code. Because of this this function gets compiled into its own
455  * kernel-module when built as a module.
456  *
457  * Returns:
458  * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system,
459  * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk.
460  */
461 int drm_get_panel_orientation_quirk(int width, int height)
462 {
463         const struct dmi_system_id *match;
464         const struct drm_dmi_panel_orientation_data *data;
465         const char *bios_date;
466         int i;
467
468         for (match = dmi_first_match(orientation_data);
469              match;
470              match = dmi_first_match(match + 1)) {
471                 data = match->driver_data;
472
473                 if (data->width != width ||
474                     data->height != height)
475                         continue;
476
477                 if (!data->bios_dates)
478                         return data->orientation;
479
480                 bios_date = dmi_get_system_info(DMI_BIOS_DATE);
481                 if (!bios_date)
482                         continue;
483
484                 i = match_string(data->bios_dates, -1, bios_date);
485                 if (i >= 0)
486                         return data->orientation;
487         }
488
489         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
490 }
491 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
492
493 #else
494
495 /* There are no quirks for non x86 devices yet */
496 int drm_get_panel_orientation_quirk(int width, int height)
497 {
498         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
499 }
500 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
501
502 #endif
503
504 MODULE_LICENSE("Dual MIT/GPL");