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Merge tag 'for-6.4-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
[linux-block.git] / drivers / acpi / video_detect.c
CommitLineData
c3d6de69 1/*
87521e16
HG		 2 * Copyright (C) 2015 Red Hat Inc.
3 * Hans de Goede <hdegoede@redhat.com>
c3d6de69
TR		 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:
c3d6de69 10 * After PCI devices are glued with ACPI devices
1e4cffe7 11 * acpi_get_pci_dev() can be called to identify ACPI graphics
c3d6de69
TR		 12 * devices for which a real graphics card is plugged in
13 *
c3d6de69
TR		 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 *
7ec48ced 17 * Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop,
677bd810 18 * sony_acpi,... can take care about backlight brightness.
c3d6de69 19 *
2600bfa3
HG		 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.
c3d6de69 23 *
87521e16
HG		 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.
c3d6de69
TR		 27 */
28
214f2c90 29#include <linux/export.h>
c3d6de69 30#include <linux/acpi.h>
21245df3 31#include <linux/apple-gmux.h>
87521e16 32#include <linux/backlight.h>
c3d6de69 33#include <linux/dmi.h>
14ca7a47 34#include <linux/module.h>
1e4cffe7 35#include <linux/pci.h>
fe7aebb4 36#include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h>
3cf3b7f0 37#include <linux/pnp.h>
87521e16 38#include <linux/types.h>
7231ed1a 39#include <linux/workqueue.h>
87521e16 40#include <acpi/video.h>
c3d6de69 41
87521e16
HG		 42static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef;
43static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef;
c3d6de69 44
14ca7a47
HG		 45static void acpi_video_parse_cmdline(void)
46{
47 if (!strcmp("vendor", acpi_video_backlight_string))
87521e16 48 acpi_backlight_cmdline = acpi_backlight_vendor;
14ca7a47 49 if (!strcmp("video", acpi_video_backlight_string))
87521e16
HG		 50 acpi_backlight_cmdline = acpi_backlight_video;
51 if (!strcmp("native", acpi_video_backlight_string))
52 acpi_backlight_cmdline = acpi_backlight_native;
420a1116
HG		 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;
87521e16
HG		 57 if (!strcmp("none", acpi_video_backlight_string))
58 acpi_backlight_cmdline = acpi_backlight_none;
14ca7a47
HG		 59}
60
c3d6de69
TR		 61static acpi_status
62find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
63{
99ece713 64 struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle);
c3d6de69 65 long *cap = context;
1e4cffe7 66 struct pci_dev *dev;
c3d6de69 67
4a4f01a6 68 static const struct acpi_device_id video_ids[] = {
c3d6de69
TR		 69 {ACPI_VIDEO_HID, 0},
70 {"", 0},
71 };
c3d6de69 72
99ece713 73 if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
1e4cffe7 74 dev = acpi_get_pci_dev(handle);
c3d6de69
TR		 75 if (!dev)
76 return AE_OK;
1e4cffe7 77 pci_dev_put(dev);
d4e1a692 78 *cap |= acpi_is_video_device(handle);
c3d6de69
TR		 79 }
80 return AE_OK;
81}
82
fe7aebb4
HG		 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
084940d5
CC		 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{
87521e16 117 acpi_backlight_dmi = acpi_backlight_vendor;
084940d5
CC		 118 return 0;
119}
120
3bd6bce3
HG		 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
4a4f01a6 133static const struct dmi_system_id video_detect_dmi_table[] = {
84d56f32
HG		 134 /*
135 * Models which should use the vendor backlight interface,
136 * because of broken ACPI video backlight control.
137 */
0172df18
HG		 138 {
139 /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
140 .callback = video_detect_force_vendor,
141 /* Acer KAV80 */
142 .matches = {
143 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
144 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
145 },
146 },
d0c2ce16 147 {
c2d6920e
HG		 148 .callback = video_detect_force_vendor,
149 /* Asus UL30VT */
150 .matches = {
d0c2ce16
LT		 151 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
152 DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
153 },
154 },
c8f6d835 155 {
c2d6920e
HG		 156 .callback = video_detect_force_vendor,
157 /* Asus UL30A */
158 .matches = {
c8f6d835
BT		 159 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
160 DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
161 },
162 },
52796b30
HG		 163 {
164 .callback = video_detect_force_vendor,
165 /* Asus X55U */
166 .matches = {
167 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
168 DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
169 },
170 },
171 {
60f1fac2 172 /* https://bugs.launchpad.net/bugs/1000146 */
52796b30
HG		 173 .callback = video_detect_force_vendor,
174 /* Asus X101CH */
175 .matches = {
176 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
177 DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
178 },
179 },
180 {
181 .callback = video_detect_force_vendor,
182 /* Asus X401U */
183 .matches = {
184 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
185 DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
186 },
187 },
188 {
189 .callback = video_detect_force_vendor,
190 /* Asus X501U */
191 .matches = {
192 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
193 DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
194 },
195 },
196 {
60f1fac2 197 /* https://bugs.launchpad.net/bugs/1000146 */
52796b30
HG		 198 .callback = video_detect_force_vendor,
199 /* Asus 1015CX */
200 .matches = {
201 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
202 DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
203 },
204 },
8991d7d9
HG		 205 {
206 .callback = video_detect_force_vendor,
207 /* Samsung N150/N210/N220 */
208 .matches = {
209 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
210 DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
211 DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
212 },
213 },
214 {
215 .callback = video_detect_force_vendor,
216 /* Samsung NF110/NF210/NF310 */
217 .matches = {
218 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
219 DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
220 DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
221 },
222 },
223 {
224 .callback = video_detect_force_vendor,
225 /* Samsung NC210 */
226 .matches = {
227 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
228 DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
229 DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
230 },
231 },
60e6655f 232 {
c2d6920e
HG		 233 .callback = video_detect_force_vendor,
234 /* Xiaomi Mi Pad 2 */
235 .matches = {
60e6655f
HG		 236 DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
237 DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
238 },
239 },
3bd6bce3 240
23735543
HG		 241 /*
242 * Models which should use the vendor backlight interface,
243 * because of broken native backlight control.
244 */
245 {
246 .callback = video_detect_force_vendor,
247 /* Sony Vaio PCG-FRV35 */
248 .matches = {
249 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
250 DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
251 },
252 },
253
a2ed70d0
HG		 254 /*
255 * Toshiba models with Transflective display, these need to use
256 * the toshiba_acpi vendor driver for proper Transflective handling.
257 */
258 {
259 .callback = video_detect_force_vendor,
260 .matches = {
261 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
262 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"),
263 },
264 },
265 {
266 .callback = video_detect_force_vendor,
267 .matches = {
268 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
269 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
270 },
271 },
272
26991079
HG		 273 /*
274 * Models which need acpi_video backlight control where the GPU drivers
275 * do not call acpi_video_register_backlight() because no internal panel
276 * is detected. Typically these are all-in-ones (monitors with builtin
277 * PC) where the panel connection shows up as regular DP instead of eDP.
278 */
279 {
280 .callback = video_detect_force_video,
281 /* Apple iMac14,1 */
282 .matches = {
283 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
284 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,1"),
285 },
286 },
287 {
288 .callback = video_detect_force_video,
289 /* Apple iMac14,2 */
290 .matches = {
291 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
292 DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,2"),
293 },
294 },
295
3bd6bce3
HG		 296 /*
297 * These models have a working acpi_video backlight control, and using
298 * native backlight causes a regression where backlight does not work
299 * when userspace is not handling brightness key events. Disable
300 * native_backlight on these to fix this:
301 * https://bugzilla.kernel.org/show_bug.cgi?id=81691
302 */
303 {
304 .callback = video_detect_force_video,
3b6740bd 305 /* ThinkPad T420 */
3bd6bce3
HG		 306 .matches = {
307 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
308 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"),
309 },
310 },
311 {
312 .callback = video_detect_force_video,
3b6740bd 313 /* ThinkPad T520 */
3bd6bce3
HG		 314 .matches = {
315 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
316 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"),
317 },
318 },
319 {
320 .callback = video_detect_force_video,
3b6740bd 321 /* ThinkPad X201s */
3bd6bce3
HG		 322 .matches = {
323 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
324 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"),
325 },
326 },
c6237b21
ML		 327 {
328 .callback = video_detect_force_video,
3b6740bd 329 /* ThinkPad X201T */
c6237b21
ML		 330 .matches = {
331 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
332 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"),
333 },
334 },
3bd6bce3
HG		 335
336 /* The native backlight controls do not work on some older machines */
337 {
338 /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */
339 .callback = video_detect_force_video,
3b6740bd 340 /* HP ENVY 15 Notebook */
3bd6bce3
HG		 341 .matches = {
342 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
343 DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
344 },
345 },
346 {
347 .callback = video_detect_force_video,
3b6740bd 348 /* SAMSUNG 870Z5E/880Z5E/680Z5E */
3bd6bce3
HG		 349 .matches = {
350 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
351 DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
352 },
353 },
354 {
355 .callback = video_detect_force_video,
3b6740bd 356 /* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */
3bd6bce3
HG		 357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
359 DMI_MATCH(DMI_PRODUCT_NAME,
360 "370R4E/370R4V/370R5E/3570RE/370R5V"),
361 },
362 },
363 {
364 /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
365 .callback = video_detect_force_video,
3b6740bd 366 /* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */
3bd6bce3
HG		 367 .matches = {
368 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
369 DMI_MATCH(DMI_PRODUCT_NAME,
370 "3570R/370R/470R/450R/510R/4450RV"),
371 },
372 },
bbf03861
HG		 373 {
374 /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
375 .callback = video_detect_force_video,
3b6740bd 376 /* SAMSUNG 670Z5E */
bbf03861
HG		 377 .matches = {
378 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
379 DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
380 },
381 },
3bd6bce3
HG		 382 {
383 /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
384 .callback = video_detect_force_video,
3b6740bd 385 /* SAMSUNG 730U3E/740U3E */
3bd6bce3
HG		 386 .matches = {
387 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
388 DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
389 },
390 },
391 {
392 /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
393 .callback = video_detect_force_video,
3b6740bd 394 /* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */
3bd6bce3
HG		 395 .matches = {
396 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
397 DMI_MATCH(DMI_PRODUCT_NAME,
398 "900X3C/900X3D/900X3E/900X4C/900X4D"),
399 },
400 },
61f9738d
HG		 401 {
402 /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
403 .callback = video_detect_force_video,
3b6740bd 404 /* Dell XPS14 L421X */
61f9738d
HG		 405 .matches = {
406 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
407 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
408 },
409 },
3bd6bce3
HG		 410 {
411 /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
412 .callback = video_detect_force_video,
3b6740bd 413 /* Dell XPS15 L521X */
3bd6bce3
HG		 414 .matches = {
415 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
416 DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
417 },
418 },
49eb5208
AL		 419 {
420 /* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
421 .callback = video_detect_force_video,
3b6740bd 422 /* SAMSUNG 530U4E/540U4E */
49eb5208
AL		 423 .matches = {
424 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
425 DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
426 },
427 },
b226faab 428 {
60f1fac2 429 /* https://bugs.launchpad.net/bugs/1894667 */
b226faab 430 .callback = video_detect_force_video,
3b6740bd 431 /* HP 635 Notebook */
b226faab
AH		 432 .matches = {
433 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
434 DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
435 },
436 },
3bd6bce3
HG		 437
438 /* Non win8 machines which need native backlight nevertheless */
584d8d1e
HG		 439 {
440 /* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */
441 .callback = video_detect_force_native,
3b6740bd 442 /* Lenovo Ideapad S405 */
584d8d1e
HG		 443 .matches = {
444 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
445 DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"),
446 },
447 },
3bd6bce3
HG		 448 {
449 /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
450 .callback = video_detect_force_native,
3b6740bd 451 /* Lenovo Ideapad Z570 */
3bd6bce3
HG		 452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
2d11eae4 454 DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
3bd6bce3
HG		 455 },
456 },
53870cf0
AM		 457 {
458 .callback = video_detect_force_native,
3b6740bd 459 /* Lenovo E41-25 */
53870cf0
AM		 460 .matches = {
461 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
462 DMI_MATCH(DMI_PRODUCT_NAME, "81FS"),
463 },
464 },
465 {
466 .callback = video_detect_force_native,
3b6740bd 467 /* Lenovo E41-45 */
53870cf0
AM		 468 .matches = {
469 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
470 DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
471 },
472 },
3bd6bce3
HG		 473 {
474 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
475 .callback = video_detect_force_native,
3b6740bd 476 /* Apple MacBook Pro 12,1 */
3bd6bce3
HG		 477 .matches = {
478 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
479 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
480 },
481 },
03c440a2
HG		 482 {
483 .callback = video_detect_force_native,
484 /* Dell Inspiron N4010 */
485 .matches = {
486 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
487 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N4010"),
488 },
489 },
4b4b3b20
HG		 490 {
491 .callback = video_detect_force_native,
3b6740bd 492 /* Dell Vostro V131 */
4b4b3b20
HG		 493 .matches = {
494 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
495 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
496 },
497 },
350fa038
HG		 498 {
499 /* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */
500 .callback = video_detect_force_native,
3b6740bd 501 /* Dell XPS 17 L702X */
350fa038
HG		 502 .matches = {
503 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
504 DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"),
505 },
506 },
d37efb79
SYLF		 507 {
508 .callback = video_detect_force_native,
3b6740bd 509 /* Dell Precision 7510 */
d37efb79
SYLF		 510 .matches = {
511 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
512 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
513 },
514 },
5e7a3bf6
HG		 515 {
516 .callback = video_detect_force_native,
517 /* Acer Aspire 3830TG */
518 .matches = {
519 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
520 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3830TG"),
521 },
522 },
8ba5fc4c
HG		 523 {
524 .callback = video_detect_force_native,
525 /* Acer Aspire 4810T */
526 .matches = {
527 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
528 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
529 },
530 },
1c8fbc1f
HG		 531 {
532 .callback = video_detect_force_native,
3b6740bd 533 /* Acer Aspire 5738z */
1c8fbc1f
HG		 534 .matches = {
535 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
536 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
537 DMI_MATCH(DMI_BOARD_NAME, "JV50"),
538 },
539 },
0172df18
HG		 540 {
541 /* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */
542 .callback = video_detect_force_native,
543 /* Acer Aspire 5741 */
544 .matches = {
545 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
546 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
547 },
548 },
549 {
550 /* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */
551 .callback = video_detect_force_native,
552 /* Acer Aspire 5750 */
553 .matches = {
554 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
555 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
556 },
557 },
558 {
559 /* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */
560 .callback = video_detect_force_native,
561 /* Acer Extensa 5235 */
562 .matches = {
563 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
564 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
565 },
566 },
567 {
568 .callback = video_detect_force_native,
569 /* Acer TravelMate 4750 */
570 .matches = {
571 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
572 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
573 },
574 },
c41c36e9
PM		 575 {
576 /* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
577 .callback = video_detect_force_native,
3b6740bd 578 /* Acer TravelMate 5735Z */
c41c36e9
PM		 579 .matches = {
580 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
581 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"),
582 DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"),
583 },
584 },
0172df18
HG		 585 {
586 /* https://bugzilla.kernel.org/show_bug.cgi?id=36322 */
587 .callback = video_detect_force_native,
588 /* Acer TravelMate 5760 */
589 .matches = {
590 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
591 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
592 },
593 },
2dfbacc6 594 {
c2d6920e
HG		 595 .callback = video_detect_force_native,
596 /* ASUSTeK COMPUTER INC. GA401 */
597 .matches = {
2dfbacc6
LJ		 598 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
599 DMI_MATCH(DMI_PRODUCT_NAME, "GA401"),
600 },
601 },
602 {
c2d6920e
HG		 603 .callback = video_detect_force_native,
604 /* ASUSTeK COMPUTER INC. GA502 */
605 .matches = {
2dfbacc6
LJ		 606 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
607 DMI_MATCH(DMI_PRODUCT_NAME, "GA502"),
608 },
609 },
610 {
c2d6920e
HG		 611 .callback = video_detect_force_native,
612 /* ASUSTeK COMPUTER INC. GA503 */
613 .matches = {
2dfbacc6
LJ		 614 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
615 DMI_MATCH(DMI_PRODUCT_NAME, "GA503"),
616 },
617 },
e6b3086f
HG		 618 {
619 .callback = video_detect_force_native,
620 /* Asus U46E */
621 .matches = {
622 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
623 DMI_MATCH(DMI_PRODUCT_NAME, "U46E"),
624 },
625 },
1e3344d6
HG		 626 {
627 .callback = video_detect_force_native,
628 /* Asus UX303UB */
629 .matches = {
630 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
631 DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"),
632 },
633 },
9dcb3423
HG		 634 {
635 .callback = video_detect_force_native,
636 /* HP EliteBook 8460p */
637 .matches = {
638 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
639 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8460p"),
640 },
641 },
d77596d4
HG		 642 {
643 .callback = video_detect_force_native,
644 /* HP Pavilion g6-1d80nr / B4U19UA */
645 .matches = {
646 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
647 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
648 DMI_MATCH(DMI_PRODUCT_SKU, "B4U19UA"),
649 },
650 },
8991d7d9
HG		 651 {
652 .callback = video_detect_force_native,
653 /* Samsung N150P */
654 .matches = {
655 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
656 DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
657 DMI_MATCH(DMI_BOARD_NAME, "N150P"),
658 },
659 },
660 {
661 .callback = video_detect_force_native,
662 /* Samsung N145P/N250P/N260P */
663 .matches = {
664 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
665 DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
666 DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
667 },
668 },
669 {
670 .callback = video_detect_force_native,
671 /* Samsung N250P */
672 .matches = {
673 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
674 DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
675 DMI_MATCH(DMI_BOARD_NAME, "N250P"),
676 },
677 },
84d56f32
HG		 678 {
679 /* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
680 .callback = video_detect_force_native,
681 /* Sony Vaio VPCEH3U1E */
682 .matches = {
683 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
684 DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
685 },
686 },
f5a6ff92
HG		 687 {
688 .callback = video_detect_force_native,
689 /* Sony Vaio VPCY11S1E */
690 .matches = {
691 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
692 DMI_MATCH(DMI_PRODUCT_NAME, "VPCY11S1E"),
693 },
694 },
10212754 695
c5b94f5b
HG		 696 /*
697 * These Toshibas have a broken acpi-video interface for brightness
698 * control. They also have an issue where the panel is off after
699 * suspend until a special firmware call is made to turn it back
700 * on. This is handled by the toshiba_acpi kernel module, so that
701 * module must be enabled for these models to work correctly.
702 */
703 {
704 /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
705 .callback = video_detect_force_native,
706 /* Toshiba Portégé R700 */
707 .matches = {
708 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
709 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
710 },
711 },
712 {
713 /* Portégé: https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
714 /* Satellite: https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
715 .callback = video_detect_force_native,
716 /* Toshiba Satellite/Portégé R830 */
717 .matches = {
718 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
719 DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
720 },
721 },
722 {
723 .callback = video_detect_force_native,
724 /* Toshiba Satellite/Portégé Z830 */
725 .matches = {
726 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
727 DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
728 },
729 },
730
f46acc1e
HG		 731 /*
732 * Models which have nvidia-ec-wmi support, but should not use it.
733 * Note this indicates a likely firmware bug on these models and should
734 * be revisited if/when Linux gets support for dynamic mux mode.
735 */
736 {
737 .callback = video_detect_force_native,
738 /* Dell G15 5515 */
739 .matches = {
740 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
741 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
742 },
743 },
89b04114
CLKA		 744 {
745 .callback = video_detect_force_native,
746 .matches = {
747 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
748 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
749 },
750 },
084940d5
CC		 751 { },
752};
753
e9cf4d9b
DO		 754static bool google_cros_ec_present(void)
755{
59dc2a7e 756 return acpi_dev_found("GOOG0004") || acpi_dev_found("GOOG000C");
e9cf4d9b
DO		 757}
758
a5df4252
HG		 759/*
760 * Windows 8 and newer no longer use the ACPI video interface, so it often
761 * does not work. So on win8+ systems prefer native brightness control.
762 * Chromebooks should always prefer native backlight control.
763 */
764static bool prefer_native_over_acpi_video(void)
765{
766 return acpi_osi_is_win8() || google_cros_ec_present();
767}
768
c3d6de69 769/*
87521e16
HG		 770 * Determine which type of backlight interface to use on this system,
771 * First check cmdline, then dmi quirks, then do autodetect.
c3d6de69 772 */
78dfc9d1 773enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect)
c3d6de69 774{
87521e16 775 static DEFINE_MUTEX(init_mutex);
fe7aebb4 776 static bool nvidia_wmi_ec_present;
b0935f11 777 static bool apple_gmux_present;
2600bfa3 778 static bool native_available;
87521e16
HG		 779 static bool init_done;
780 static long video_caps;
084940d5 781
87521e16
HG		 782 /* Parse cmdline, dmi and acpi only once */
783 mutex_lock(&init_mutex);
784 if (!init_done) {
785 acpi_video_parse_cmdline();
084940d5 786 dmi_check_system(video_detect_dmi_table);
87521e16 787 acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
2263576c 788 ACPI_UINT32_MAX, find_video, NULL,
87521e16 789 &video_caps, NULL);
fe7aebb4 790 nvidia_wmi_ec_present = nvidia_wmi_ec_supported();
b0935f11 791 apple_gmux_present = apple_gmux_detect(NULL, NULL);
87521e16 792 init_done = true;
c3d6de69 793 }
2600bfa3
HG		 794 if (native)
795 native_available = true;
87521e16
HG		 796 mutex_unlock(&init_mutex);
797
78dfc9d1
HG		 798 if (auto_detect)
799 *auto_detect = false;
800
b39be9f4
HG		 801 /*
802 * The below heuristics / detection steps are in order of descending
803 * presedence. The commandline takes presedence over anything else.
804 */
87521e16
HG		 805 if (acpi_backlight_cmdline != acpi_backlight_undef)
806 return acpi_backlight_cmdline;
807
b39be9f4 808 /* DMI quirks override any autodetection. */
87521e16
HG		 809 if (acpi_backlight_dmi != acpi_backlight_undef)
810 return acpi_backlight_dmi;
811
78dfc9d1
HG		 812 if (auto_detect)
813 *auto_detect = true;
814
fe7aebb4
HG		 815 /* Special cases such as nvidia_wmi_ec and apple gmux. */
816 if (nvidia_wmi_ec_present)
817 return acpi_backlight_nvidia_wmi_ec;
818
b0935f11 819 if (apple_gmux_present)
21245df3
HG		 820 return acpi_backlight_apple_gmux;
821
a5df4252
HG		 822 /* Use ACPI video if available, except when native should be preferred. */
823 if ((video_caps & ACPI_VIDEO_BACKLIGHT) &&
824 !(native_available && prefer_native_over_acpi_video()))
825 return acpi_backlight_video;
59dc2a7e 826
a5df4252 827 /* Use native if available */
fb1836c9 828 if (native_available)
a5df4252 829 return acpi_backlight_native;
87521e16 830
fb1836c9 831 /* No ACPI video/native (old hw), use vendor specific fw methods. */
b39be9f4 832 return acpi_backlight_vendor;
c3d6de69 833}
78dfc9d1 834EXPORT_SYMBOL(__acpi_video_get_backlight_type);
Linux 6.x block layer and io_uring tree(s)