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 | |
42 | static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef; |
43 | static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef; |
44 | |
45 | static 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 | |
61 | static acpi_status |
62 | find_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(device: acpi_dev, ids: 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 |
85 | static 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, instance: 0, |
96 | method_id: WMI_BRIGHTNESS_METHOD_SOURCE, in: &buf, out: &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 |
107 | static 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 */ |
115 | static int video_detect_force_vendor(const struct dmi_system_id *d) |
116 | { |
117 | acpi_backlight_dmi = acpi_backlight_vendor; |
118 | return 0; |
119 | } |
120 | |
121 | static int video_detect_force_video(const struct dmi_system_id *d) |
122 | { |
123 | acpi_backlight_dmi = acpi_backlight_video; |
124 | return 0; |
125 | } |
126 | |
127 | static int video_detect_force_native(const struct dmi_system_id *d) |
128 | { |
129 | acpi_backlight_dmi = acpi_backlight_native; |
130 | return 0; |
131 | } |
132 | |
133 | static 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, device: 0x2100, NULL); |
138 | if (dev) |
139 | acpi_backlight_dmi = acpi_backlight_vendor; |
140 | return 0; |
141 | } |
142 | |
143 | static 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 | |
873 | static bool google_cros_ec_present(void) |
874 | { |
875 | return acpi_dev_found(hid: "GOOG0004" ) || acpi_dev_found(hid: "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 | */ |
883 | static 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 | */ |
892 | enum 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(list: video_detect_dmi_table); |
906 | acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, |
907 | ACPI_UINT32_MAX, descending_callback: find_video, NULL, |
908 | context: &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(lock: &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 | } |
974 | EXPORT_SYMBOL(__acpi_video_get_backlight_type); |
975 | |