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1/*
2 * Copyright (C) 2015 Red Hat Inc.
3 * Hans de Goede <hdegoede@redhat.com>
4 * Copyright (C) 2008 SuSE Linux Products GmbH
5 * Thomas Renninger <trenn@suse.de>
6 *
7 * May be copied or modified under the terms of the GNU General Public License
8 *
9 * video_detect.c:
10 * After PCI devices are glued with ACPI devices
11 * acpi_get_pci_dev() can be called to identify ACPI graphics
12 * devices for which a real graphics card is plugged in
13 *
14 * Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
15 * are available, video.ko should be used to handle the device.
16 *
17 * Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop,
18 * sony_acpi,... can take care about backlight brightness.
19 *
20 * Backlight drivers can use acpi_video_get_backlight_type() to determine which
21 * driver should handle the backlight. RAW/GPU-driver backlight drivers must
22 * use the acpi_video_backlight_use_native() helper for this.
23 *
24 * If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
25 * this file will not be compiled and acpi_video_get_backlight_type() will
26 * always return acpi_backlight_vendor.
27 */
28
29#include <linux/export.h>
30#include <linux/acpi.h>
31#include <linux/apple-gmux.h>
32#include <linux/backlight.h>
33#include <linux/dmi.h>
34#include <linux/module.h>
35#include <linux/pci.h>
36#include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h>
37#include <linux/pnp.h>
38#include <linux/types.h>
39#include <linux/workqueue.h>
40#include <acpi/video.h>
41
42static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef;
43static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef;
44
45static void acpi_video_parse_cmdline(void)
46{
47 if (!strcmp("vendor", acpi_video_backlight_string))
48 acpi_backlight_cmdline = acpi_backlight_vendor;
49 if (!strcmp("video", acpi_video_backlight_string))
50 acpi_backlight_cmdline = acpi_backlight_video;
51 if (!strcmp("native", acpi_video_backlight_string))
52 acpi_backlight_cmdline = acpi_backlight_native;
53 if (!strcmp("nvidia_wmi_ec", acpi_video_backlight_string))
54 acpi_backlight_cmdline = acpi_backlight_nvidia_wmi_ec;
55 if (!strcmp("apple_gmux", acpi_video_backlight_string))
56 acpi_backlight_cmdline = acpi_backlight_apple_gmux;
57 if (!strcmp("dell_uart", acpi_video_backlight_string))
58 acpi_backlight_cmdline = acpi_backlight_dell_uart;
59 if (!strcmp("none", acpi_video_backlight_string))
60 acpi_backlight_cmdline = acpi_backlight_none;
61}
62
63static acpi_status
64find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
65{
66 struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle);
67 long *cap = context;
68 struct pci_dev *dev;
69
70 static const struct acpi_device_id video_ids[] = {
71 {ACPI_VIDEO_HID, 0},
72 {"", 0},
73 };
74
75 if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
76 dev = acpi_get_pci_dev(handle);
77 if (!dev)
78 return AE_OK;
79 pci_dev_put(dev);
80 *cap |= acpi_is_video_device(handle);
81 }
82 return AE_OK;
83}
84
85/* This depends on ACPI_WMI which is X86 only */
86#ifdef CONFIG_X86
87static bool nvidia_wmi_ec_supported(void)
88{
89 struct wmi_brightness_args args = {
90 .mode = WMI_BRIGHTNESS_MODE_GET,
91 .val = 0,
92 .ret = 0,
93 };
94 struct acpi_buffer buf = { (acpi_size)sizeof(args), &args };
95 acpi_status status;
96
97 status = wmi_evaluate_method(WMI_BRIGHTNESS_GUID, 0,
98 WMI_BRIGHTNESS_METHOD_SOURCE, &buf, &buf);
99 if (ACPI_FAILURE(status))
100 return false;
101
102 /*
103 * If brightness is handled by the EC then nvidia-wmi-ec-backlight
104 * should be used, else the GPU driver(s) should be used.
105 */
106 return args.ret == WMI_BRIGHTNESS_SOURCE_EC;
107}
108#else
109static bool nvidia_wmi_ec_supported(void)
110{
111 return false;
112}
113#endif
114
115/* Force to use vendor driver when the ACPI device is known to be
116 * buggy */
117static int video_detect_force_vendor(const struct dmi_system_id *d)
118{
119 acpi_backlight_dmi = acpi_backlight_vendor;
120 return 0;
121}
122
123static int video_detect_force_video(const struct dmi_system_id *d)
124{
125 acpi_backlight_dmi = acpi_backlight_video;
126 return 0;
127}
128
129static int video_detect_force_native(const struct dmi_system_id *d)
130{
131 acpi_backlight_dmi = acpi_backlight_native;
132 return 0;
133}
134
135static int video_detect_portege_r100(const struct dmi_system_id *d)
136{
137 struct pci_dev *dev;
138 /* Search for Trident CyberBlade XP4m32 to confirm Portégé R100 */
139 dev = pci_get_device(PCI_VENDOR_ID_TRIDENT, 0x2100, NULL);
140 if (dev)
141 acpi_backlight_dmi = acpi_backlight_vendor;
142 return 0;
143}
144
145static const struct dmi_system_id video_detect_dmi_table[] = {
146 /*
147 * Models which should use the vendor backlight interface,
148 * because of broken ACPI video backlight control.
149 */
150 {
151 /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
152 .callback = video_detect_force_vendor,
153 /* Acer KAV80 */
154 .matches = {
155 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
156 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
157 },
158 },
159 {
160 .callback = video_detect_force_vendor,
161 /* Asus UL30VT */
162 .matches = {
163 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
164 DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
165 },
166 },
167 {
168 .callback = video_detect_force_vendor,
169 /* Asus UL30A */
170 .matches = {
171 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
172 DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
173 },
174 },
175 {
176 .callback = video_detect_force_vendor,
177 /* Asus X55U */
178 .matches = {
179 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
180 DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
181 },
182 },
183 {
184 /* https://bugs.launchpad.net/bugs/1000146 */
185 .callback = video_detect_force_vendor,
186 /* Asus X101CH */
187 .matches = {
188 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
189 DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
190 },
191 },
192 {
193 .callback = video_detect_force_vendor,
194 /* Asus X401U */
195 .matches = {
196 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
197 DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
198 },
199 },
200 {
201 .callback = video_detect_force_vendor,
202 /* Asus X501U */
203 .matches = {
204 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
205 DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
206 },
207 },
208 {
209 /* https://bugs.launchpad.net/bugs/1000146 */
210 .callback = video_detect_force_vendor,
211 /* Asus 1015CX */
212 .matches = {
213 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
214 DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
215 },
216 },
217 {
218 .callback = video_detect_force_vendor,
219 /* Samsung N150/N210/N220 */
220 .matches = {
221 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
222 DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
223 DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
224 },
225 },
226 {
227 .callback = video_detect_force_vendor,
228 /* Samsung NF110/NF210/NF310 */
229 .matches = {
230 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
231 DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
232 DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
233 },
234 },
235 {
236 .callback = video_detect_force_vendor,
237 /* Samsung NC210 */
238 .matches = {
239 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
240 DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
241 DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
242 },
243 },
244
245 /*
246 * Models which should use the vendor backlight interface,
247 * because of broken native backlight control.
248 */
249 {
250 .callback = video_detect_force_vendor,
251 /* Sony Vaio PCG-FRV35 */
252 .matches = {
253 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
254 DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
255 },
256 },
257 {
258 .callback = video_detect_force_vendor,
259 /* Panasonic Toughbook CF-18 */
260 .matches = {
261 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita Electric Industrial"),
262 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
263 },
264 },
265
266 /*
267 * Toshiba models with Transflective display, these need to use
268 * the toshiba_acpi vendor driver for proper Transflective handling.
269 */
270 {
271 .callback = video_detect_force_vendor,
272 .matches = {
273 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
274 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"),
275 },
276 },
277 {
278 .callback = video_detect_force_vendor,
279 .matches = {
280 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
281 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
282 },
283 },
284
285 /*
286 * Toshiba Portégé R100 has working both acpi_video and toshiba_acpi
287 * vendor driver. But none of them gets activated as it has a VGA with
288 * no kernel driver (Trident CyberBlade XP4m32).
289 * The DMI strings are generic so check for the VGA chip in callback.
290 */
291 {
292 .callback = video_detect_portege_r100,
293 .matches = {
294 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
295 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
296 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
297 DMI_MATCH(DMI_BOARD_NAME, "Portable PC")
298 },
299 },
300
301 /*
302 * Models which need acpi_video backlight control where the GPU drivers
303 * do not call acpi_video_register_backlight() because no internal panel
304 * is detected. Typically these are all-in-ones (monitors with builtin
305 * PC) where the panel connection shows up as regular DP instead of eDP.
306 */
307 {
308 .callback = video_detect_force_video,
309 /* Apple iMac14,1 */
310 .matches = {
311 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
312 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,1"),
313 },
314 },
315 {
316 .callback = video_detect_force_video,
317 /* Apple iMac14,2 */
318 .matches = {
319 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
320 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,2"),
321 },
322 },
323
324 /*
325 * These models have a working acpi_video backlight control, and using
326 * native backlight causes a regression where backlight does not work
327 * when userspace is not handling brightness key events. Disable
328 * native_backlight on these to fix this:
329 * https://bugzilla.kernel.org/show_bug.cgi?id=81691
330 */
331 {
332 .callback = video_detect_force_video,
333 /* ThinkPad T420 */
334 .matches = {
335 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
336 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"),
337 },
338 },
339 {
340 .callback = video_detect_force_video,
341 /* ThinkPad T520 */
342 .matches = {
343 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
344 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"),
345 },
346 },
347 {
348 .callback = video_detect_force_video,
349 /* ThinkPad X201s */
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
352 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"),
353 },
354 },
355 {
356 .callback = video_detect_force_video,
357 /* ThinkPad X201T */
358 .matches = {
359 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
360 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"),
361 },
362 },
363
364 /* The native backlight controls do not work on some older machines */
365 {
366 /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */
367 .callback = video_detect_force_video,
368 /* HP ENVY 15 Notebook */
369 .matches = {
370 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
371 DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
372 },
373 },
374 {
375 .callback = video_detect_force_video,
376 /* SAMSUNG 870Z5E/880Z5E/680Z5E */
377 .matches = {
378 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
379 DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
380 },
381 },
382 {
383 .callback = video_detect_force_video,
384 /* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */
385 .matches = {
386 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
387 DMI_MATCH(DMI_PRODUCT_NAME,
388 "370R4E/370R4V/370R5E/3570RE/370R5V"),
389 },
390 },
391 {
392 /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
393 .callback = video_detect_force_video,
394 /* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */
395 .matches = {
396 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
397 DMI_MATCH(DMI_PRODUCT_NAME,
398 "3570R/370R/470R/450R/510R/4450RV"),
399 },
400 },
401 {
402 /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
403 .callback = video_detect_force_video,
404 /* SAMSUNG 670Z5E */
405 .matches = {
406 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
407 DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
408 },
409 },
410 {
411 /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
412 .callback = video_detect_force_video,
413 /* SAMSUNG 730U3E/740U3E */
414 .matches = {
415 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
416 DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
417 },
418 },
419 {
420 /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
421 .callback = video_detect_force_video,
422 /* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */
423 .matches = {
424 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
425 DMI_MATCH(DMI_PRODUCT_NAME,
426 "900X3C/900X3D/900X3E/900X4C/900X4D"),
427 },
428 },
429 {
430 /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
431 .callback = video_detect_force_video,
432 /* Dell XPS14 L421X */
433 .matches = {
434 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
435 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
436 },
437 },
438 {
439 /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
440 .callback = video_detect_force_video,
441 /* Dell XPS15 L521X */
442 .matches = {
443 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
444 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
445 },
446 },
447 {
448 /* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
449 .callback = video_detect_force_video,
450 /* SAMSUNG 530U4E/540U4E */
451 .matches = {
452 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
453 DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
454 },
455 },
456 {
457 /* https://bugs.launchpad.net/bugs/1894667 */
458 .callback = video_detect_force_video,
459 /* HP 635 Notebook */
460 .matches = {
461 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
462 DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
463 },
464 },
465
466 /* Non win8 machines which need native backlight nevertheless */
467 {
468 /* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */
469 .callback = video_detect_force_native,
470 /* Lenovo Ideapad S405 */
471 .matches = {
472 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
473 DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"),
474 },
475 },
476 {
477 /* https://bugzilla.suse.com/show_bug.cgi?id=1208724 */
478 .callback = video_detect_force_native,
479 /* Lenovo Ideapad Z470 */
480 .matches = {
481 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
482 DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"),
483 },
484 },
485 {
486 /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
487 .callback = video_detect_force_native,
488 /* Lenovo Ideapad Z570 */
489 .matches = {
490 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
491 DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
492 },
493 },
494 {
495 .callback = video_detect_force_native,
496 /* Lenovo E41-25 */
497 .matches = {
498 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
499 DMI_MATCH(DMI_PRODUCT_NAME, "81FS"),
500 },
501 },
502 {
503 .callback = video_detect_force_native,
504 /* Lenovo E41-45 */
505 .matches = {
506 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
507 DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
508 },
509 },
510 {
511 .callback = video_detect_force_native,
512 /* Lenovo Slim 7 16ARH7 */
513 .matches = {
514 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
515 DMI_MATCH(DMI_PRODUCT_NAME, "82UX"),
516 },
517 },
518 {
519 .callback = video_detect_force_native,
520 /* Lenovo ThinkPad X131e (3371 AMD version) */
521 .matches = {
522 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
523 DMI_MATCH(DMI_PRODUCT_NAME, "3371"),
524 },
525 },
526 {
527 .callback = video_detect_force_native,
528 /* Apple iMac11,3 */
529 .matches = {
530 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
531 DMI_MATCH(DMI_PRODUCT_NAME, "iMac11,3"),
532 },
533 },
534 {
535 /* https://gitlab.freedesktop.org/drm/amd/-/issues/1838 */
536 .callback = video_detect_force_native,
537 /* Apple iMac12,1 */
538 .matches = {
539 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
540 DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,1"),
541 },
542 },
543 {
544 /* https://gitlab.freedesktop.org/drm/amd/-/issues/2753 */
545 .callback = video_detect_force_native,
546 /* Apple iMac12,2 */
547 .matches = {
548 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
549 DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"),
550 },
551 },
552 {
553 .callback = video_detect_force_native,
554 /* Apple MacBook Air 7,2 */
555 .matches = {
556 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
557 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir7,2"),
558 },
559 },
560 {
561 .callback = video_detect_force_native,
562 /* Apple MacBook Air 9,1 */
563 .matches = {
564 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
565 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir9,1"),
566 },
567 },
568 {
569 .callback = video_detect_force_native,
570 /* Apple MacBook Pro 9,2 */
571 .matches = {
572 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
573 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,2"),
574 },
575 },
576 {
577 .callback = video_detect_force_native,
578 /* Apple MacBook Pro 11,2 */
579 .matches = {
580 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
581 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro11,2"),
582 },
583 },
584 {
585 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
586 .callback = video_detect_force_native,
587 /* Apple MacBook Pro 12,1 */
588 .matches = {
589 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
590 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
591 },
592 },
593 {
594 .callback = video_detect_force_native,
595 /* Apple MacBook Pro 16,2 */
596 .matches = {
597 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
598 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
599 },
600 },
601 {
602 .callback = video_detect_force_native,
603 /* Dell Inspiron N4010 */
604 .matches = {
605 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
606 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N4010"),
607 },
608 },
609 {
610 .callback = video_detect_force_native,
611 /* Dell Vostro V131 */
612 .matches = {
613 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
614 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
615 },
616 },
617 {
618 /* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */
619 .callback = video_detect_force_native,
620 /* Dell XPS 17 L702X */
621 .matches = {
622 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
623 DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"),
624 },
625 },
626 {
627 .callback = video_detect_force_native,
628 /* Dell Precision 7510 */
629 .matches = {
630 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
631 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
632 },
633 },
634 {
635 .callback = video_detect_force_native,
636 /* Dell Studio 1569 */
637 .matches = {
638 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
639 DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1569"),
640 },
641 },
642 {
643 .callback = video_detect_force_native,
644 /* Acer Aspire 3830TG */
645 .matches = {
646 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
647 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3830TG"),
648 },
649 },
650 {
651 .callback = video_detect_force_native,
652 /* Acer Aspire 4810T */
653 .matches = {
654 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
655 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
656 },
657 },
658 {
659 .callback = video_detect_force_native,
660 /* Acer Aspire 5738z */
661 .matches = {
662 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
663 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
664 DMI_MATCH(DMI_BOARD_NAME, "JV50"),
665 },
666 },
667 {
668 /* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */
669 .callback = video_detect_force_native,
670 /* Acer Aspire 5741 */
671 .matches = {
672 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
673 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
674 },
675 },
676 {
677 /* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */
678 .callback = video_detect_force_native,
679 /* Acer Aspire 5750 */
680 .matches = {
681 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
682 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
683 },
684 },
685 {
686 /* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */
687 .callback = video_detect_force_native,
688 /* Acer Extensa 5235 */
689 .matches = {
690 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
691 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
692 },
693 },
694 {
695 .callback = video_detect_force_native,
696 /* Acer TravelMate 4750 */
697 .matches = {
698 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
699 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
700 },
701 },
702 {
703 /* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
704 .callback = video_detect_force_native,
705 /* Acer TravelMate 5735Z */
706 .matches = {
707 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
708 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"),
709 DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"),
710 },
711 },
712 {
713 /* https://bugzilla.kernel.org/show_bug.cgi?id=36322 */
714 .callback = video_detect_force_native,
715 /* Acer TravelMate 5760 */
716 .matches = {
717 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
718 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
719 },
720 },
721 {
722 .callback = video_detect_force_native,
723 /* ASUSTeK COMPUTER INC. GA401 */
724 .matches = {
725 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
726 DMI_MATCH(DMI_PRODUCT_NAME, "GA401"),
727 },
728 },
729 {
730 .callback = video_detect_force_native,
731 /* ASUSTeK COMPUTER INC. GA502 */
732 .matches = {
733 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
734 DMI_MATCH(DMI_PRODUCT_NAME, "GA502"),
735 },
736 },
737 {
738 .callback = video_detect_force_native,
739 /* ASUSTeK COMPUTER INC. GA503 */
740 .matches = {
741 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
742 DMI_MATCH(DMI_PRODUCT_NAME, "GA503"),
743 },
744 },
745 {
746 .callback = video_detect_force_native,
747 /* Asus U46E */
748 .matches = {
749 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
750 DMI_MATCH(DMI_PRODUCT_NAME, "U46E"),
751 },
752 },
753 {
754 .callback = video_detect_force_native,
755 /* Asus UX303UB */
756 .matches = {
757 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
758 DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"),
759 },
760 },
761 {
762 .callback = video_detect_force_native,
763 /* HP EliteBook 8460p */
764 .matches = {
765 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
766 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8460p"),
767 },
768 },
769 {
770 .callback = video_detect_force_native,
771 /* HP Pavilion g6-1d80nr / B4U19UA */
772 .matches = {
773 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
774 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
775 DMI_MATCH(DMI_PRODUCT_SKU, "B4U19UA"),
776 },
777 },
778 {
779 .callback = video_detect_force_native,
780 /* Samsung N150P */
781 .matches = {
782 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
783 DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
784 DMI_MATCH(DMI_BOARD_NAME, "N150P"),
785 },
786 },
787 {
788 .callback = video_detect_force_native,
789 /* Samsung N145P/N250P/N260P */
790 .matches = {
791 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
792 DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
793 DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
794 },
795 },
796 {
797 .callback = video_detect_force_native,
798 /* Samsung N250P */
799 .matches = {
800 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
801 DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
802 DMI_MATCH(DMI_BOARD_NAME, "N250P"),
803 },
804 },
805 {
806 /* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
807 .callback = video_detect_force_native,
808 /* Sony Vaio VPCEH3U1E */
809 .matches = {
810 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
811 DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
812 },
813 },
814 {
815 .callback = video_detect_force_native,
816 /* Sony Vaio VPCY11S1E */
817 .matches = {
818 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
819 DMI_MATCH(DMI_PRODUCT_NAME, "VPCY11S1E"),
820 },
821 },
822
823 /*
824 * These Toshibas have a broken acpi-video interface for brightness
825 * control. They also have an issue where the panel is off after
826 * suspend until a special firmware call is made to turn it back
827 * on. This is handled by the toshiba_acpi kernel module, so that
828 * module must be enabled for these models to work correctly.
829 */
830 {
831 /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
832 .callback = video_detect_force_native,
833 /* Toshiba Portégé R700 */
834 .matches = {
835 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
836 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
837 },
838 },
839 {
840 /* Portégé: https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
841 /* Satellite: https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
842 .callback = video_detect_force_native,
843 /* Toshiba Satellite/Portégé R830 */
844 .matches = {
845 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
846 DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
847 },
848 },
849 {
850 .callback = video_detect_force_native,
851 /* Toshiba Satellite/Portégé Z830 */
852 .matches = {
853 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
854 DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
855 },
856 },
857
858 /*
859 * Dell AIO (All in Ones) which advertise an UART attached backlight
860 * controller board in their ACPI tables (and may even have one), but
861 * which need native backlight control nevertheless.
862 */
863 {
864 /* https://github.com/zabbly/linux/issues/26 */
865 .callback = video_detect_force_native,
866 /* Dell OptiPlex 5480 AIO */
867 .matches = {
868 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
869 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 5480 AIO"),
870 },
871 },
872 {
873 /* https://bugzilla.redhat.com/show_bug.cgi?id=2303936 */
874 .callback = video_detect_force_native,
875 /* Dell OptiPlex 7760 AIO */
876 .matches = {
877 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
878 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7760 AIO"),
879 },
880 },
881
882 /*
883 * Models which have nvidia-ec-wmi support, but should not use it.
884 * Note this indicates a likely firmware bug on these models and should
885 * be revisited if/when Linux gets support for dynamic mux mode.
886 */
887 {
888 .callback = video_detect_force_native,
889 /* Dell G15 5515 */
890 .matches = {
891 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
892 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
893 },
894 },
895 {
896 .callback = video_detect_force_native,
897 .matches = {
898 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
899 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
900 },
901 },
902
903 /*
904 * x86 android tablets which directly control the backlight through
905 * an external backlight controller, typically TI's LP8557.
906 * The backlight is directly controlled by the lp855x driver on these.
907 * This setup means that neither i915's native nor acpi_video backlight
908 * control works. Add a "vendor" quirk to disable both. Note these
909 * devices do not use vendor control in the typical meaning of
910 * vendor specific SMBIOS or ACPI calls being used.
911 */
912 {
913 .callback = video_detect_force_vendor,
914 /* Lenovo Yoga Book X90F / X90L */
915 .matches = {
916 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
917 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
918 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
919 },
920 },
921 {
922 .callback = video_detect_force_vendor,
923 /*
924 * Lenovo Yoga Tablet 2 830F/L or 1050F/L (The 8" and 10"
925 * Lenovo Yoga Tablet 2 use the same mainboard)
926 */
927 .matches = {
928 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
929 DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
930 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
931 /* Partial match on beginning of BIOS version */
932 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
933 },
934 },
935 {
936 .callback = video_detect_force_vendor,
937 /* Lenovo Yoga Tab 3 Pro YT3-X90F */
938 .matches = {
939 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
940 DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
941 },
942 },
943 {
944 .callback = video_detect_force_vendor,
945 /* Xiaomi Mi Pad 2 */
946 .matches = {
947 DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
948 DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
949 },
950 },
951 { },
952};
953
954static bool google_cros_ec_present(void)
955{
956 return acpi_dev_found("GOOG0004") || acpi_dev_found("GOOG000C");
957}
958
959/*
960 * Windows 8 and newer no longer use the ACPI video interface, so it often
961 * does not work. So on win8+ systems prefer native brightness control.
962 * Chromebooks should always prefer native backlight control.
963 */
964static bool prefer_native_over_acpi_video(void)
965{
966 return acpi_osi_is_win8() || google_cros_ec_present();
967}
968
969/*
970 * Determine which type of backlight interface to use on this system,
971 * First check cmdline, then dmi quirks, then do autodetect.
972 */
973enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect)
974{
975 static DEFINE_MUTEX(init_mutex);
976 static bool nvidia_wmi_ec_present;
977 static bool apple_gmux_present;
978 static bool dell_uart_present;
979 static bool native_available;
980 static bool init_done;
981 static long video_caps;
982
983 /* Parse cmdline, dmi and acpi only once */
984 mutex_lock(&init_mutex);
985 if (!init_done) {
986 acpi_video_parse_cmdline();
987 dmi_check_system(video_detect_dmi_table);
988 acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
989 ACPI_UINT32_MAX, find_video, NULL,
990 &video_caps, NULL);
991 nvidia_wmi_ec_present = nvidia_wmi_ec_supported();
992 apple_gmux_present = apple_gmux_detect(NULL, NULL);
993 dell_uart_present = acpi_dev_present("DELL0501", NULL, -1);
994 init_done = true;
995 }
996 if (native)
997 native_available = true;
998 mutex_unlock(&init_mutex);
999
1000 if (auto_detect)
1001 *auto_detect = false;
1002
1003 /*
1004 * The below heuristics / detection steps are in order of descending
1005 * presedence. The commandline takes presedence over anything else.
1006 */
1007 if (acpi_backlight_cmdline != acpi_backlight_undef)
1008 return acpi_backlight_cmdline;
1009
1010 /* DMI quirks override any autodetection. */
1011 if (acpi_backlight_dmi != acpi_backlight_undef)
1012 return acpi_backlight_dmi;
1013
1014 if (auto_detect)
1015 *auto_detect = true;
1016
1017 /* Special cases such as nvidia_wmi_ec and apple gmux. */
1018 if (nvidia_wmi_ec_present)
1019 return acpi_backlight_nvidia_wmi_ec;
1020
1021 if (apple_gmux_present)
1022 return acpi_backlight_apple_gmux;
1023
1024 if (dell_uart_present)
1025 return acpi_backlight_dell_uart;
1026
1027 /* Use ACPI video if available, except when native should be preferred. */
1028 if ((video_caps & ACPI_VIDEO_BACKLIGHT) &&
1029 !(native_available && prefer_native_over_acpi_video()))
1030 return acpi_backlight_video;
1031
1032 /* Use native if available */
1033 if (native_available)
1034 return acpi_backlight_native;
1035
1036 /*
1037 * The vendor specific BIOS interfaces are only necessary for
1038 * laptops from before ~2008.
1039 *
1040 * For laptops from ~2008 till ~2023 this point is never reached
1041 * because on those (video_caps & ACPI_VIDEO_BACKLIGHT) above is true.
1042 *
1043 * Laptops from after ~2023 no longer support ACPI_VIDEO_BACKLIGHT,
1044 * if this point is reached on those, this likely means that
1045 * the GPU kms driver which sets native_available has not loaded yet.
1046 *
1047 * Returning acpi_backlight_vendor in this case is known to sometimes
1048 * cause a non working vendor specific /sys/class/backlight device to
1049 * get registered.
1050 *
1051 * Return acpi_backlight_none on laptops with ACPI tables written
1052 * for Windows 8 (laptops from after ~2012) to avoid this problem.
1053 */
1054 if (acpi_osi_is_win8())
1055 return acpi_backlight_none;
1056
1057 /* No ACPI video/native (old hw), use vendor specific fw methods. */
1058 return acpi_backlight_vendor;
1059}
1060EXPORT_SYMBOL(__acpi_video_get_backlight_type);
1/*
2 * Copyright (C) 2015 Red Hat Inc.
3 * Hans de Goede <hdegoede@redhat.com>
4 * Copyright (C) 2008 SuSE Linux Products GmbH
5 * Thomas Renninger <trenn@suse.de>
6 *
7 * May be copied or modified under the terms of the GNU General Public License
8 *
9 * video_detect.c:
10 * After PCI devices are glued with ACPI devices
11 * acpi_get_pci_dev() can be called to identify ACPI graphics
12 * devices for which a real graphics card is plugged in
13 *
14 * Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
15 * are available, video.ko should be used to handle the device.
16 *
17 * Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop,
18 * sony_acpi,... can take care about backlight brightness.
19 *
20 * Backlight drivers can use acpi_video_get_backlight_type() to determine which
21 * driver should handle the backlight. RAW/GPU-driver backlight drivers must
22 * use the acpi_video_backlight_use_native() helper for this.
23 *
24 * If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
25 * this file will not be compiled and acpi_video_get_backlight_type() will
26 * always return acpi_backlight_vendor.
27 */
28
29#include <linux/export.h>
30#include <linux/acpi.h>
31#include <linux/apple-gmux.h>
32#include <linux/backlight.h>
33#include <linux/dmi.h>
34#include <linux/module.h>
35#include <linux/pci.h>
36#include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h>
37#include <linux/pnp.h>
38#include <linux/types.h>
39#include <linux/workqueue.h>
40#include <acpi/video.h>
41
42static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef;
43static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef;
44
45static void acpi_video_parse_cmdline(void)
46{
47 if (!strcmp("vendor", acpi_video_backlight_string))
48 acpi_backlight_cmdline = acpi_backlight_vendor;
49 if (!strcmp("video", acpi_video_backlight_string))
50 acpi_backlight_cmdline = acpi_backlight_video;
51 if (!strcmp("native", acpi_video_backlight_string))
52 acpi_backlight_cmdline = acpi_backlight_native;
53 if (!strcmp("nvidia_wmi_ec", acpi_video_backlight_string))
54 acpi_backlight_cmdline = acpi_backlight_nvidia_wmi_ec;
55 if (!strcmp("apple_gmux", acpi_video_backlight_string))
56 acpi_backlight_cmdline = acpi_backlight_apple_gmux;
57 if (!strcmp("none", acpi_video_backlight_string))
58 acpi_backlight_cmdline = acpi_backlight_none;
59}
60
61static acpi_status
62find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
63{
64 struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle);
65 long *cap = context;
66 struct pci_dev *dev;
67
68 static const struct acpi_device_id video_ids[] = {
69 {ACPI_VIDEO_HID, 0},
70 {"", 0},
71 };
72
73 if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
74 dev = acpi_get_pci_dev(handle);
75 if (!dev)
76 return AE_OK;
77 pci_dev_put(dev);
78 *cap |= acpi_is_video_device(handle);
79 }
80 return AE_OK;
81}
82
83/* This depends on ACPI_WMI which is X86 only */
84#ifdef CONFIG_X86
85static bool nvidia_wmi_ec_supported(void)
86{
87 struct wmi_brightness_args args = {
88 .mode = WMI_BRIGHTNESS_MODE_GET,
89 .val = 0,
90 .ret = 0,
91 };
92 struct acpi_buffer buf = { (acpi_size)sizeof(args), &args };
93 acpi_status status;
94
95 status = wmi_evaluate_method(WMI_BRIGHTNESS_GUID, 0,
96 WMI_BRIGHTNESS_METHOD_SOURCE, &buf, &buf);
97 if (ACPI_FAILURE(status))
98 return false;
99
100 /*
101 * If brightness is handled by the EC then nvidia-wmi-ec-backlight
102 * should be used, else the GPU driver(s) should be used.
103 */
104 return args.ret == WMI_BRIGHTNESS_SOURCE_EC;
105}
106#else
107static bool nvidia_wmi_ec_supported(void)
108{
109 return false;
110}
111#endif
112
113/* Force to use vendor driver when the ACPI device is known to be
114 * buggy */
115static int video_detect_force_vendor(const struct dmi_system_id *d)
116{
117 acpi_backlight_dmi = acpi_backlight_vendor;
118 return 0;
119}
120
121static int video_detect_force_video(const struct dmi_system_id *d)
122{
123 acpi_backlight_dmi = acpi_backlight_video;
124 return 0;
125}
126
127static int video_detect_force_native(const struct dmi_system_id *d)
128{
129 acpi_backlight_dmi = acpi_backlight_native;
130 return 0;
131}
132
133static int video_detect_portege_r100(const struct dmi_system_id *d)
134{
135 struct pci_dev *dev;
136 /* Search for Trident CyberBlade XP4m32 to confirm Portégé R100 */
137 dev = pci_get_device(PCI_VENDOR_ID_TRIDENT, 0x2100, NULL);
138 if (dev)
139 acpi_backlight_dmi = acpi_backlight_vendor;
140 return 0;
141}
142
143static const struct dmi_system_id video_detect_dmi_table[] = {
144 /*
145 * Models which should use the vendor backlight interface,
146 * because of broken ACPI video backlight control.
147 */
148 {
149 /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
150 .callback = video_detect_force_vendor,
151 /* Acer KAV80 */
152 .matches = {
153 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
154 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
155 },
156 },
157 {
158 .callback = video_detect_force_vendor,
159 /* Asus UL30VT */
160 .matches = {
161 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
162 DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
163 },
164 },
165 {
166 .callback = video_detect_force_vendor,
167 /* Asus UL30A */
168 .matches = {
169 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
170 DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
171 },
172 },
173 {
174 .callback = video_detect_force_vendor,
175 /* Asus X55U */
176 .matches = {
177 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
178 DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
179 },
180 },
181 {
182 /* https://bugs.launchpad.net/bugs/1000146 */
183 .callback = video_detect_force_vendor,
184 /* Asus X101CH */
185 .matches = {
186 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
187 DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
188 },
189 },
190 {
191 .callback = video_detect_force_vendor,
192 /* Asus X401U */
193 .matches = {
194 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
195 DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
196 },
197 },
198 {
199 .callback = video_detect_force_vendor,
200 /* Asus X501U */
201 .matches = {
202 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
203 DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
204 },
205 },
206 {
207 /* https://bugs.launchpad.net/bugs/1000146 */
208 .callback = video_detect_force_vendor,
209 /* Asus 1015CX */
210 .matches = {
211 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
212 DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
213 },
214 },
215 {
216 .callback = video_detect_force_vendor,
217 /* Samsung N150/N210/N220 */
218 .matches = {
219 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
220 DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
221 DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
222 },
223 },
224 {
225 .callback = video_detect_force_vendor,
226 /* Samsung NF110/NF210/NF310 */
227 .matches = {
228 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
229 DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
230 DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
231 },
232 },
233 {
234 .callback = video_detect_force_vendor,
235 /* Samsung NC210 */
236 .matches = {
237 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
238 DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
239 DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
240 },
241 },
242
243 /*
244 * Models which should use the vendor backlight interface,
245 * because of broken native backlight control.
246 */
247 {
248 .callback = video_detect_force_vendor,
249 /* Sony Vaio PCG-FRV35 */
250 .matches = {
251 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
252 DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
253 },
254 },
255
256 /*
257 * Toshiba models with Transflective display, these need to use
258 * the toshiba_acpi vendor driver for proper Transflective handling.
259 */
260 {
261 .callback = video_detect_force_vendor,
262 .matches = {
263 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
264 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"),
265 },
266 },
267 {
268 .callback = video_detect_force_vendor,
269 .matches = {
270 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
271 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
272 },
273 },
274
275 /*
276 * Toshiba Portégé R100 has working both acpi_video and toshiba_acpi
277 * vendor driver. But none of them gets activated as it has a VGA with
278 * no kernel driver (Trident CyberBlade XP4m32).
279 * The DMI strings are generic so check for the VGA chip in callback.
280 */
281 {
282 .callback = video_detect_portege_r100,
283 .matches = {
284 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
285 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
286 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
287 DMI_MATCH(DMI_BOARD_NAME, "Portable PC")
288 },
289 },
290
291 /*
292 * Models which need acpi_video backlight control where the GPU drivers
293 * do not call acpi_video_register_backlight() because no internal panel
294 * is detected. Typically these are all-in-ones (monitors with builtin
295 * PC) where the panel connection shows up as regular DP instead of eDP.
296 */
297 {
298 .callback = video_detect_force_video,
299 /* Apple iMac14,1 */
300 .matches = {
301 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
302 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,1"),
303 },
304 },
305 {
306 .callback = video_detect_force_video,
307 /* Apple iMac14,2 */
308 .matches = {
309 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
310 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,2"),
311 },
312 },
313
314 /*
315 * These models have a working acpi_video backlight control, and using
316 * native backlight causes a regression where backlight does not work
317 * when userspace is not handling brightness key events. Disable
318 * native_backlight on these to fix this:
319 * https://bugzilla.kernel.org/show_bug.cgi?id=81691
320 */
321 {
322 .callback = video_detect_force_video,
323 /* ThinkPad T420 */
324 .matches = {
325 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
326 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"),
327 },
328 },
329 {
330 .callback = video_detect_force_video,
331 /* ThinkPad T520 */
332 .matches = {
333 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
334 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"),
335 },
336 },
337 {
338 .callback = video_detect_force_video,
339 /* ThinkPad X201s */
340 .matches = {
341 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
342 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"),
343 },
344 },
345 {
346 .callback = video_detect_force_video,
347 /* ThinkPad X201T */
348 .matches = {
349 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
350 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"),
351 },
352 },
353
354 /* The native backlight controls do not work on some older machines */
355 {
356 /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */
357 .callback = video_detect_force_video,
358 /* HP ENVY 15 Notebook */
359 .matches = {
360 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
361 DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
362 },
363 },
364 {
365 .callback = video_detect_force_video,
366 /* SAMSUNG 870Z5E/880Z5E/680Z5E */
367 .matches = {
368 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
369 DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
370 },
371 },
372 {
373 .callback = video_detect_force_video,
374 /* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */
375 .matches = {
376 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
377 DMI_MATCH(DMI_PRODUCT_NAME,
378 "370R4E/370R4V/370R5E/3570RE/370R5V"),
379 },
380 },
381 {
382 /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
383 .callback = video_detect_force_video,
384 /* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */
385 .matches = {
386 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
387 DMI_MATCH(DMI_PRODUCT_NAME,
388 "3570R/370R/470R/450R/510R/4450RV"),
389 },
390 },
391 {
392 /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
393 .callback = video_detect_force_video,
394 /* SAMSUNG 670Z5E */
395 .matches = {
396 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
397 DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
398 },
399 },
400 {
401 /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
402 .callback = video_detect_force_video,
403 /* SAMSUNG 730U3E/740U3E */
404 .matches = {
405 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
406 DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
407 },
408 },
409 {
410 /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
411 .callback = video_detect_force_video,
412 /* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */
413 .matches = {
414 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
415 DMI_MATCH(DMI_PRODUCT_NAME,
416 "900X3C/900X3D/900X3E/900X4C/900X4D"),
417 },
418 },
419 {
420 /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
421 .callback = video_detect_force_video,
422 /* Dell XPS14 L421X */
423 .matches = {
424 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
425 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
426 },
427 },
428 {
429 /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
430 .callback = video_detect_force_video,
431 /* Dell XPS15 L521X */
432 .matches = {
433 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
434 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
435 },
436 },
437 {
438 /* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
439 .callback = video_detect_force_video,
440 /* SAMSUNG 530U4E/540U4E */
441 .matches = {
442 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
443 DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
444 },
445 },
446 {
447 /* https://bugs.launchpad.net/bugs/1894667 */
448 .callback = video_detect_force_video,
449 /* HP 635 Notebook */
450 .matches = {
451 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
452 DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
453 },
454 },
455
456 /* Non win8 machines which need native backlight nevertheless */
457 {
458 /* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */
459 .callback = video_detect_force_native,
460 /* Lenovo Ideapad S405 */
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
463 DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"),
464 },
465 },
466 {
467 /* https://bugzilla.suse.com/show_bug.cgi?id=1208724 */
468 .callback = video_detect_force_native,
469 /* Lenovo Ideapad Z470 */
470 .matches = {
471 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
472 DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"),
473 },
474 },
475 {
476 /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
477 .callback = video_detect_force_native,
478 /* Lenovo Ideapad Z570 */
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
481 DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
482 },
483 },
484 {
485 .callback = video_detect_force_native,
486 /* Lenovo E41-25 */
487 .matches = {
488 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
489 DMI_MATCH(DMI_PRODUCT_NAME, "81FS"),
490 },
491 },
492 {
493 .callback = video_detect_force_native,
494 /* Lenovo E41-45 */
495 .matches = {
496 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
497 DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
498 },
499 },
500 {
501 .callback = video_detect_force_native,
502 /* Lenovo ThinkPad X131e (3371 AMD version) */
503 .matches = {
504 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
505 DMI_MATCH(DMI_PRODUCT_NAME, "3371"),
506 },
507 },
508 {
509 .callback = video_detect_force_native,
510 /* Apple iMac11,3 */
511 .matches = {
512 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
513 DMI_MATCH(DMI_PRODUCT_NAME, "iMac11,3"),
514 },
515 },
516 {
517 /* https://gitlab.freedesktop.org/drm/amd/-/issues/1838 */
518 .callback = video_detect_force_native,
519 /* Apple iMac12,1 */
520 .matches = {
521 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
522 DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,1"),
523 },
524 },
525 {
526 /* https://gitlab.freedesktop.org/drm/amd/-/issues/2753 */
527 .callback = video_detect_force_native,
528 /* Apple iMac12,2 */
529 .matches = {
530 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
531 DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"),
532 },
533 },
534 {
535 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
536 .callback = video_detect_force_native,
537 /* Apple MacBook Pro 12,1 */
538 .matches = {
539 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
540 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
541 },
542 },
543 {
544 .callback = video_detect_force_native,
545 /* Dell Inspiron N4010 */
546 .matches = {
547 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
548 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N4010"),
549 },
550 },
551 {
552 .callback = video_detect_force_native,
553 /* Dell Vostro V131 */
554 .matches = {
555 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
556 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
557 },
558 },
559 {
560 /* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */
561 .callback = video_detect_force_native,
562 /* Dell XPS 17 L702X */
563 .matches = {
564 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
565 DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"),
566 },
567 },
568 {
569 .callback = video_detect_force_native,
570 /* Dell Precision 7510 */
571 .matches = {
572 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
573 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
574 },
575 },
576 {
577 .callback = video_detect_force_native,
578 /* Dell Studio 1569 */
579 .matches = {
580 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
581 DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1569"),
582 },
583 },
584 {
585 .callback = video_detect_force_native,
586 /* Acer Aspire 3830TG */
587 .matches = {
588 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
589 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3830TG"),
590 },
591 },
592 {
593 .callback = video_detect_force_native,
594 /* Acer Aspire 4810T */
595 .matches = {
596 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
597 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
598 },
599 },
600 {
601 .callback = video_detect_force_native,
602 /* Acer Aspire 5738z */
603 .matches = {
604 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
605 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
606 DMI_MATCH(DMI_BOARD_NAME, "JV50"),
607 },
608 },
609 {
610 /* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */
611 .callback = video_detect_force_native,
612 /* Acer Aspire 5741 */
613 .matches = {
614 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
615 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
616 },
617 },
618 {
619 /* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */
620 .callback = video_detect_force_native,
621 /* Acer Aspire 5750 */
622 .matches = {
623 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
624 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
625 },
626 },
627 {
628 /* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */
629 .callback = video_detect_force_native,
630 /* Acer Extensa 5235 */
631 .matches = {
632 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
633 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
634 },
635 },
636 {
637 .callback = video_detect_force_native,
638 /* Acer TravelMate 4750 */
639 .matches = {
640 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
641 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
642 },
643 },
644 {
645 /* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
646 .callback = video_detect_force_native,
647 /* Acer TravelMate 5735Z */
648 .matches = {
649 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
650 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"),
651 DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"),
652 },
653 },
654 {
655 /* https://bugzilla.kernel.org/show_bug.cgi?id=36322 */
656 .callback = video_detect_force_native,
657 /* Acer TravelMate 5760 */
658 .matches = {
659 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
660 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
661 },
662 },
663 {
664 .callback = video_detect_force_native,
665 /* ASUSTeK COMPUTER INC. GA401 */
666 .matches = {
667 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
668 DMI_MATCH(DMI_PRODUCT_NAME, "GA401"),
669 },
670 },
671 {
672 .callback = video_detect_force_native,
673 /* ASUSTeK COMPUTER INC. GA502 */
674 .matches = {
675 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
676 DMI_MATCH(DMI_PRODUCT_NAME, "GA502"),
677 },
678 },
679 {
680 .callback = video_detect_force_native,
681 /* ASUSTeK COMPUTER INC. GA503 */
682 .matches = {
683 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
684 DMI_MATCH(DMI_PRODUCT_NAME, "GA503"),
685 },
686 },
687 {
688 .callback = video_detect_force_native,
689 /* Asus U46E */
690 .matches = {
691 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
692 DMI_MATCH(DMI_PRODUCT_NAME, "U46E"),
693 },
694 },
695 {
696 .callback = video_detect_force_native,
697 /* Asus UX303UB */
698 .matches = {
699 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
700 DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"),
701 },
702 },
703 {
704 .callback = video_detect_force_native,
705 /* HP EliteBook 8460p */
706 .matches = {
707 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
708 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8460p"),
709 },
710 },
711 {
712 .callback = video_detect_force_native,
713 /* HP Pavilion g6-1d80nr / B4U19UA */
714 .matches = {
715 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
716 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
717 DMI_MATCH(DMI_PRODUCT_SKU, "B4U19UA"),
718 },
719 },
720 {
721 .callback = video_detect_force_native,
722 /* Samsung N150P */
723 .matches = {
724 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
725 DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
726 DMI_MATCH(DMI_BOARD_NAME, "N150P"),
727 },
728 },
729 {
730 .callback = video_detect_force_native,
731 /* Samsung N145P/N250P/N260P */
732 .matches = {
733 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
734 DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
735 DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
736 },
737 },
738 {
739 .callback = video_detect_force_native,
740 /* Samsung N250P */
741 .matches = {
742 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
743 DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
744 DMI_MATCH(DMI_BOARD_NAME, "N250P"),
745 },
746 },
747 {
748 /* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
749 .callback = video_detect_force_native,
750 /* Sony Vaio VPCEH3U1E */
751 .matches = {
752 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
753 DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
754 },
755 },
756 {
757 .callback = video_detect_force_native,
758 /* Sony Vaio VPCY11S1E */
759 .matches = {
760 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
761 DMI_MATCH(DMI_PRODUCT_NAME, "VPCY11S1E"),
762 },
763 },
764
765 /*
766 * These Toshibas have a broken acpi-video interface for brightness
767 * control. They also have an issue where the panel is off after
768 * suspend until a special firmware call is made to turn it back
769 * on. This is handled by the toshiba_acpi kernel module, so that
770 * module must be enabled for these models to work correctly.
771 */
772 {
773 /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
774 .callback = video_detect_force_native,
775 /* Toshiba Portégé R700 */
776 .matches = {
777 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
778 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
779 },
780 },
781 {
782 /* Portégé: https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
783 /* Satellite: https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
784 .callback = video_detect_force_native,
785 /* Toshiba Satellite/Portégé R830 */
786 .matches = {
787 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
788 DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
789 },
790 },
791 {
792 .callback = video_detect_force_native,
793 /* Toshiba Satellite/Portégé Z830 */
794 .matches = {
795 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
796 DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
797 },
798 },
799
800 /*
801 * Models which have nvidia-ec-wmi support, but should not use it.
802 * Note this indicates a likely firmware bug on these models and should
803 * be revisited if/when Linux gets support for dynamic mux mode.
804 */
805 {
806 .callback = video_detect_force_native,
807 /* Dell G15 5515 */
808 .matches = {
809 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
810 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
811 },
812 },
813 {
814 .callback = video_detect_force_native,
815 .matches = {
816 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
817 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
818 },
819 },
820
821 /*
822 * x86 android tablets which directly control the backlight through
823 * an external backlight controller, typically TI's LP8557.
824 * The backlight is directly controlled by the lp855x driver on these.
825 * This setup means that neither i915's native nor acpi_video backlight
826 * control works. Add a "vendor" quirk to disable both. Note these
827 * devices do not use vendor control in the typical meaning of
828 * vendor specific SMBIOS or ACPI calls being used.
829 */
830 {
831 .callback = video_detect_force_vendor,
832 /* Lenovo Yoga Book X90F / X90L */
833 .matches = {
834 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
835 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
836 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
837 },
838 },
839 {
840 .callback = video_detect_force_vendor,
841 /*
842 * Lenovo Yoga Tablet 2 830F/L or 1050F/L (The 8" and 10"
843 * Lenovo Yoga Tablet 2 use the same mainboard)
844 */
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
848 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
849 /* Partial match on beginning of BIOS version */
850 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
851 },
852 },
853 {
854 .callback = video_detect_force_vendor,
855 /* Lenovo Yoga Tab 3 Pro YT3-X90F */
856 .matches = {
857 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
858 DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
859 DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
860 },
861 },
862 {
863 .callback = video_detect_force_vendor,
864 /* Xiaomi Mi Pad 2 */
865 .matches = {
866 DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
867 DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
868 },
869 },
870 { },
871};
872
873static bool google_cros_ec_present(void)
874{
875 return acpi_dev_found("GOOG0004") || acpi_dev_found("GOOG000C");
876}
877
878/*
879 * Windows 8 and newer no longer use the ACPI video interface, so it often
880 * does not work. So on win8+ systems prefer native brightness control.
881 * Chromebooks should always prefer native backlight control.
882 */
883static bool prefer_native_over_acpi_video(void)
884{
885 return acpi_osi_is_win8() || google_cros_ec_present();
886}
887
888/*
889 * Determine which type of backlight interface to use on this system,
890 * First check cmdline, then dmi quirks, then do autodetect.
891 */
892enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect)
893{
894 static DEFINE_MUTEX(init_mutex);
895 static bool nvidia_wmi_ec_present;
896 static bool apple_gmux_present;
897 static bool native_available;
898 static bool init_done;
899 static long video_caps;
900
901 /* Parse cmdline, dmi and acpi only once */
902 mutex_lock(&init_mutex);
903 if (!init_done) {
904 acpi_video_parse_cmdline();
905 dmi_check_system(video_detect_dmi_table);
906 acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
907 ACPI_UINT32_MAX, find_video, NULL,
908 &video_caps, NULL);
909 nvidia_wmi_ec_present = nvidia_wmi_ec_supported();
910 apple_gmux_present = apple_gmux_detect(NULL, NULL);
911 init_done = true;
912 }
913 if (native)
914 native_available = true;
915 mutex_unlock(&init_mutex);
916
917 if (auto_detect)
918 *auto_detect = false;
919
920 /*
921 * The below heuristics / detection steps are in order of descending
922 * presedence. The commandline takes presedence over anything else.
923 */
924 if (acpi_backlight_cmdline != acpi_backlight_undef)
925 return acpi_backlight_cmdline;
926
927 /* DMI quirks override any autodetection. */
928 if (acpi_backlight_dmi != acpi_backlight_undef)
929 return acpi_backlight_dmi;
930
931 if (auto_detect)
932 *auto_detect = true;
933
934 /* Special cases such as nvidia_wmi_ec and apple gmux. */
935 if (nvidia_wmi_ec_present)
936 return acpi_backlight_nvidia_wmi_ec;
937
938 if (apple_gmux_present)
939 return acpi_backlight_apple_gmux;
940
941 /* Use ACPI video if available, except when native should be preferred. */
942 if ((video_caps & ACPI_VIDEO_BACKLIGHT) &&
943 !(native_available && prefer_native_over_acpi_video()))
944 return acpi_backlight_video;
945
946 /* Use native if available */
947 if (native_available)
948 return acpi_backlight_native;
949
950 /*
951 * The vendor specific BIOS interfaces are only necessary for
952 * laptops from before ~2008.
953 *
954 * For laptops from ~2008 till ~2023 this point is never reached
955 * because on those (video_caps & ACPI_VIDEO_BACKLIGHT) above is true.
956 *
957 * Laptops from after ~2023 no longer support ACPI_VIDEO_BACKLIGHT,
958 * if this point is reached on those, this likely means that
959 * the GPU kms driver which sets native_available has not loaded yet.
960 *
961 * Returning acpi_backlight_vendor in this case is known to sometimes
962 * cause a non working vendor specific /sys/class/backlight device to
963 * get registered.
964 *
965 * Return acpi_backlight_none on laptops with ACPI tables written
966 * for Windows 8 (laptops from after ~2012) to avoid this problem.
967 */
968 if (acpi_osi_is_win8())
969 return acpi_backlight_none;
970
971 /* No ACPI video/native (old hw), use vendor specific fw methods. */
972 return acpi_backlight_vendor;
973}
974EXPORT_SYMBOL(__acpi_video_get_backlight_type);