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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e5f660eb LZ |
2 | /* |
3 | * osi.c - _OSI implementation | |
4 | * | |
5 | * Copyright (C) 2016 Intel Corporation | |
6 | * Author: Lv Zheng <lv.zheng@intel.com> | |
e5f660eb LZ |
7 | */ |
8 | ||
9 | /* Uncomment next line to get verbose printout */ | |
10 | /* #define DEBUG */ | |
11 | #define pr_fmt(fmt) "ACPI: " fmt | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/acpi.h> | |
16 | #include <linux/dmi.h> | |
630b3aff | 17 | #include <linux/platform_data/x86/apple.h> |
e5f660eb LZ |
18 | |
19 | #include "internal.h" | |
20 | ||
21 | ||
22 | #define OSI_STRING_LENGTH_MAX 64 | |
23 | #define OSI_STRING_ENTRIES_MAX 16 | |
24 | ||
25 | struct acpi_osi_entry { | |
26 | char string[OSI_STRING_LENGTH_MAX]; | |
27 | bool enable; | |
28 | }; | |
29 | ||
30 | static struct acpi_osi_config { | |
31 | u8 default_disabling; | |
32 | unsigned int linux_enable:1; | |
33 | unsigned int linux_dmi:1; | |
34 | unsigned int linux_cmdline:1; | |
35 | unsigned int darwin_enable:1; | |
36 | unsigned int darwin_dmi:1; | |
37 | unsigned int darwin_cmdline:1; | |
38 | } osi_config; | |
39 | ||
40 | static struct acpi_osi_config osi_config; | |
41 | static struct acpi_osi_entry | |
42 | osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = { | |
43 | {"Module Device", true}, | |
44 | {"Processor Device", true}, | |
45 | {"3.0 _SCP Extensions", true}, | |
46 | {"Processor Aggregator Device", true}, | |
9251a71d AH |
47 | /* |
48 | * Linux-Dell-Video is used by BIOS to disable RTD3 for NVidia graphics | |
49 | * cards as RTD3 is not supported by drivers now. Systems with NVidia | |
50 | * cards will hang without RTD3 disabled. | |
51 | * | |
52 | * Once NVidia drivers officially support RTD3, this _OSI strings can | |
53 | * be removed if both new and old graphics cards are supported. | |
54 | */ | |
55 | {"Linux-Dell-Video", true}, | |
887532ca AH |
56 | /* |
57 | * Linux-Lenovo-NV-HDMI-Audio is used by BIOS to power on NVidia's HDMI | |
58 | * audio device which is turned off for power-saving in Windows OS. | |
59 | * This power management feature observed on some Lenovo Thinkpad | |
60 | * systems which will not be able to output audio via HDMI without | |
61 | * a BIOS workaround. | |
62 | */ | |
63 | {"Linux-Lenovo-NV-HDMI-Audio", true}, | |
28586a51 AH |
64 | /* |
65 | * Linux-HPI-Hybrid-Graphics is used by BIOS to enable dGPU to | |
66 | * output video directly to external monitors on HP Inc. mobile | |
67 | * workstations as Nvidia and AMD VGA drivers provide limited | |
68 | * hybrid graphics supports. | |
69 | */ | |
70 | {"Linux-HPI-Hybrid-Graphics", true}, | |
e5f660eb LZ |
71 | }; |
72 | ||
73 | static u32 acpi_osi_handler(acpi_string interface, u32 supported) | |
74 | { | |
75 | if (!strcmp("Linux", interface)) { | |
76 | pr_notice_once(FW_BUG | |
77 | "BIOS _OSI(Linux) query %s%s\n", | |
78 | osi_config.linux_enable ? "honored" : "ignored", | |
79 | osi_config.linux_cmdline ? " via cmdline" : | |
80 | osi_config.linux_dmi ? " via DMI" : ""); | |
81 | } | |
82 | if (!strcmp("Darwin", interface)) { | |
83 | pr_notice_once( | |
84 | "BIOS _OSI(Darwin) query %s%s\n", | |
85 | osi_config.darwin_enable ? "honored" : "ignored", | |
86 | osi_config.darwin_cmdline ? " via cmdline" : | |
87 | osi_config.darwin_dmi ? " via DMI" : ""); | |
88 | } | |
89 | ||
90 | return supported; | |
91 | } | |
92 | ||
93 | void __init acpi_osi_setup(char *str) | |
94 | { | |
95 | struct acpi_osi_entry *osi; | |
96 | bool enable = true; | |
97 | int i; | |
98 | ||
99 | if (!acpi_gbl_create_osi_method) | |
100 | return; | |
101 | ||
102 | if (str == NULL || *str == '\0') { | |
103 | pr_info("_OSI method disabled\n"); | |
104 | acpi_gbl_create_osi_method = FALSE; | |
105 | return; | |
106 | } | |
107 | ||
108 | if (*str == '!') { | |
109 | str++; | |
110 | if (*str == '\0') { | |
111 | /* Do not override acpi_osi=!* */ | |
112 | if (!osi_config.default_disabling) | |
113 | osi_config.default_disabling = | |
114 | ACPI_DISABLE_ALL_VENDOR_STRINGS; | |
115 | return; | |
116 | } else if (*str == '*') { | |
117 | osi_config.default_disabling = ACPI_DISABLE_ALL_STRINGS; | |
118 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { | |
119 | osi = &osi_setup_entries[i]; | |
120 | osi->enable = false; | |
121 | } | |
122 | return; | |
123 | } else if (*str == '!') { | |
124 | osi_config.default_disabling = 0; | |
125 | return; | |
126 | } | |
127 | enable = false; | |
128 | } | |
129 | ||
130 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { | |
131 | osi = &osi_setup_entries[i]; | |
132 | if (!strcmp(osi->string, str)) { | |
133 | osi->enable = enable; | |
134 | break; | |
135 | } else if (osi->string[0] == '\0') { | |
136 | osi->enable = enable; | |
137 | strncpy(osi->string, str, OSI_STRING_LENGTH_MAX); | |
138 | break; | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | static void __init __acpi_osi_setup_darwin(bool enable) | |
144 | { | |
145 | osi_config.darwin_enable = !!enable; | |
146 | if (enable) { | |
147 | acpi_osi_setup("!"); | |
148 | acpi_osi_setup("Darwin"); | |
149 | } else { | |
150 | acpi_osi_setup("!!"); | |
151 | acpi_osi_setup("!Darwin"); | |
152 | } | |
153 | } | |
154 | ||
155 | static void __init acpi_osi_setup_darwin(bool enable) | |
156 | { | |
157 | /* Override acpi_osi_dmi_blacklisted() */ | |
158 | osi_config.darwin_dmi = 0; | |
159 | osi_config.darwin_cmdline = 1; | |
160 | __acpi_osi_setup_darwin(enable); | |
161 | } | |
162 | ||
163 | /* | |
164 | * The story of _OSI(Linux) | |
165 | * | |
166 | * From pre-history through Linux-2.6.22, Linux responded TRUE upon a BIOS | |
167 | * OSI(Linux) query. | |
168 | * | |
169 | * Unfortunately, reference BIOS writers got wind of this and put | |
170 | * OSI(Linux) in their example code, quickly exposing this string as | |
171 | * ill-conceived and opening the door to an un-bounded number of BIOS | |
172 | * incompatibilities. | |
173 | * | |
174 | * For example, OSI(Linux) was used on resume to re-POST a video card on | |
175 | * one system, because Linux at that time could not do a speedy restore in | |
176 | * its native driver. But then upon gaining quick native restore | |
177 | * capability, Linux has no way to tell the BIOS to skip the time-consuming | |
178 | * POST -- putting Linux at a permanent performance disadvantage. On | |
179 | * another system, the BIOS writer used OSI(Linux) to infer native OS | |
180 | * support for IPMI! On other systems, OSI(Linux) simply got in the way of | |
181 | * Linux claiming to be compatible with other operating systems, exposing | |
182 | * BIOS issues such as skipped device initialization. | |
183 | * | |
184 | * So "Linux" turned out to be a really poor chose of OSI string, and from | |
185 | * Linux-2.6.23 onward we respond FALSE. | |
186 | * | |
187 | * BIOS writers should NOT query _OSI(Linux) on future systems. Linux will | |
188 | * complain on the console when it sees it, and return FALSE. To get Linux | |
189 | * to return TRUE for your system will require a kernel source update to | |
190 | * add a DMI entry, or boot with "acpi_osi=Linux" | |
191 | */ | |
192 | static void __init __acpi_osi_setup_linux(bool enable) | |
193 | { | |
194 | osi_config.linux_enable = !!enable; | |
195 | if (enable) | |
196 | acpi_osi_setup("Linux"); | |
197 | else | |
198 | acpi_osi_setup("!Linux"); | |
199 | } | |
200 | ||
201 | static void __init acpi_osi_setup_linux(bool enable) | |
202 | { | |
203 | /* Override acpi_osi_dmi_blacklisted() */ | |
204 | osi_config.linux_dmi = 0; | |
205 | osi_config.linux_cmdline = 1; | |
206 | __acpi_osi_setup_linux(enable); | |
207 | } | |
208 | ||
209 | /* | |
210 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI | |
211 | * | |
212 | * empty string disables _OSI | |
213 | * string starting with '!' disables that string | |
214 | * otherwise string is added to list, augmenting built-in strings | |
215 | */ | |
216 | static void __init acpi_osi_setup_late(void) | |
217 | { | |
218 | struct acpi_osi_entry *osi; | |
219 | char *str; | |
220 | int i; | |
221 | acpi_status status; | |
222 | ||
223 | if (osi_config.default_disabling) { | |
224 | status = acpi_update_interfaces(osi_config.default_disabling); | |
225 | if (ACPI_SUCCESS(status)) | |
226 | pr_info("Disabled all _OSI OS vendors%s\n", | |
227 | osi_config.default_disabling == | |
228 | ACPI_DISABLE_ALL_STRINGS ? | |
229 | " and feature groups" : ""); | |
230 | } | |
231 | ||
232 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { | |
233 | osi = &osi_setup_entries[i]; | |
234 | str = osi->string; | |
235 | if (*str == '\0') | |
236 | break; | |
237 | if (osi->enable) { | |
238 | status = acpi_install_interface(str); | |
239 | if (ACPI_SUCCESS(status)) | |
240 | pr_info("Added _OSI(%s)\n", str); | |
241 | } else { | |
242 | status = acpi_remove_interface(str); | |
243 | if (ACPI_SUCCESS(status)) | |
244 | pr_info("Deleted _OSI(%s)\n", str); | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
249 | static int __init osi_setup(char *str) | |
250 | { | |
251 | if (str && !strcmp("Linux", str)) | |
252 | acpi_osi_setup_linux(true); | |
253 | else if (str && !strcmp("!Linux", str)) | |
254 | acpi_osi_setup_linux(false); | |
255 | else if (str && !strcmp("Darwin", str)) | |
256 | acpi_osi_setup_darwin(true); | |
257 | else if (str && !strcmp("!Darwin", str)) | |
258 | acpi_osi_setup_darwin(false); | |
259 | else | |
260 | acpi_osi_setup(str); | |
261 | ||
262 | return 1; | |
263 | } | |
264 | __setup("acpi_osi=", osi_setup); | |
265 | ||
266 | bool acpi_osi_is_win8(void) | |
267 | { | |
268 | return acpi_gbl_osi_data >= ACPI_OSI_WIN_8; | |
269 | } | |
270 | EXPORT_SYMBOL(acpi_osi_is_win8); | |
271 | ||
630b3aff | 272 | static void __init acpi_osi_dmi_darwin(void) |
e5f660eb | 273 | { |
630b3aff | 274 | pr_notice("DMI detected to setup _OSI(\"Darwin\"): Apple hardware\n"); |
e5f660eb | 275 | osi_config.darwin_dmi = 1; |
630b3aff | 276 | __acpi_osi_setup_darwin(true); |
e5f660eb LZ |
277 | } |
278 | ||
5438bc57 CIK |
279 | static void __init acpi_osi_dmi_linux(bool enable, |
280 | const struct dmi_system_id *d) | |
e5f660eb LZ |
281 | { |
282 | pr_notice("DMI detected to setup _OSI(\"Linux\"): %s\n", d->ident); | |
283 | osi_config.linux_dmi = 1; | |
284 | __acpi_osi_setup_linux(enable); | |
285 | } | |
286 | ||
e5f660eb LZ |
287 | static int __init dmi_enable_osi_linux(const struct dmi_system_id *d) |
288 | { | |
289 | acpi_osi_dmi_linux(true, d); | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) | |
295 | { | |
296 | pr_notice("DMI detected: %s\n", d->ident); | |
297 | acpi_osi_setup("!Windows 2006"); | |
298 | acpi_osi_setup("!Windows 2006 SP1"); | |
299 | acpi_osi_setup("!Windows 2006 SP2"); | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int __init dmi_disable_osi_win7(const struct dmi_system_id *d) | |
305 | { | |
306 | pr_notice("DMI detected: %s\n", d->ident); | |
307 | acpi_osi_setup("!Windows 2009"); | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static int __init dmi_disable_osi_win8(const struct dmi_system_id *d) | |
313 | { | |
314 | pr_notice("DMI detected: %s\n", d->ident); | |
315 | acpi_osi_setup("!Windows 2012"); | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
320 | /* | |
321 | * Linux default _OSI response behavior is determined by this DMI table. | |
322 | * | |
323 | * Note that _OSI("Linux")/_OSI("Darwin") determined here can be overridden | |
324 | * by acpi_osi=!Linux/acpi_osi=!Darwin command line options. | |
325 | */ | |
6faadbbb | 326 | static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = { |
e5f660eb LZ |
327 | { |
328 | .callback = dmi_disable_osi_vista, | |
329 | .ident = "Fujitsu Siemens", | |
330 | .matches = { | |
331 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
332 | DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), | |
333 | }, | |
334 | }, | |
335 | { | |
336 | /* | |
337 | * There have a NVIF method in MSI GX723 DSDT need call by Nvidia | |
338 | * driver (e.g. nouveau) when user press brightness hotkey. | |
339 | * Currently, nouveau driver didn't do the job and it causes there | |
340 | * have a infinite while loop in DSDT when user press hotkey. | |
341 | * We add MSI GX723's dmi information to this table for workaround | |
342 | * this issue. | |
343 | * Will remove MSI GX723 from the table after nouveau grows support. | |
344 | */ | |
345 | .callback = dmi_disable_osi_vista, | |
346 | .ident = "MSI GX723", | |
347 | .matches = { | |
348 | DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"), | |
349 | DMI_MATCH(DMI_PRODUCT_NAME, "GX723"), | |
350 | }, | |
351 | }, | |
352 | { | |
353 | .callback = dmi_disable_osi_vista, | |
354 | .ident = "Sony VGN-NS10J_S", | |
355 | .matches = { | |
356 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
357 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"), | |
358 | }, | |
359 | }, | |
360 | { | |
361 | .callback = dmi_disable_osi_vista, | |
362 | .ident = "Sony VGN-SR290J", | |
363 | .matches = { | |
364 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
365 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"), | |
366 | }, | |
367 | }, | |
368 | { | |
369 | .callback = dmi_disable_osi_vista, | |
370 | .ident = "VGN-NS50B_L", | |
371 | .matches = { | |
372 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
373 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"), | |
374 | }, | |
375 | }, | |
376 | { | |
377 | .callback = dmi_disable_osi_vista, | |
378 | .ident = "VGN-SR19XN", | |
379 | .matches = { | |
380 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
381 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR19XN"), | |
382 | }, | |
383 | }, | |
384 | { | |
385 | .callback = dmi_disable_osi_vista, | |
386 | .ident = "Toshiba Satellite L355", | |
387 | .matches = { | |
388 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
389 | DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"), | |
390 | }, | |
391 | }, | |
392 | { | |
393 | .callback = dmi_disable_osi_win7, | |
394 | .ident = "ASUS K50IJ", | |
395 | .matches = { | |
396 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), | |
397 | DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"), | |
398 | }, | |
399 | }, | |
400 | { | |
401 | .callback = dmi_disable_osi_vista, | |
402 | .ident = "Toshiba P305D", | |
403 | .matches = { | |
404 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
405 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"), | |
406 | }, | |
407 | }, | |
408 | { | |
409 | .callback = dmi_disable_osi_vista, | |
410 | .ident = "Toshiba NB100", | |
411 | .matches = { | |
412 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
413 | DMI_MATCH(DMI_PRODUCT_NAME, "NB100"), | |
414 | }, | |
415 | }, | |
416 | ||
417 | /* | |
418 | * The wireless hotkey does not work on those machines when | |
419 | * returning true for _OSI("Windows 2012") | |
420 | */ | |
421 | { | |
422 | .callback = dmi_disable_osi_win8, | |
423 | .ident = "Dell Inspiron 7737", | |
424 | .matches = { | |
425 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
426 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"), | |
427 | }, | |
428 | }, | |
429 | { | |
430 | .callback = dmi_disable_osi_win8, | |
431 | .ident = "Dell Inspiron 7537", | |
432 | .matches = { | |
433 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
434 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"), | |
435 | }, | |
436 | }, | |
437 | { | |
438 | .callback = dmi_disable_osi_win8, | |
439 | .ident = "Dell Inspiron 5437", | |
440 | .matches = { | |
441 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
442 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"), | |
443 | }, | |
444 | }, | |
445 | { | |
446 | .callback = dmi_disable_osi_win8, | |
447 | .ident = "Dell Inspiron 3437", | |
448 | .matches = { | |
449 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
450 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"), | |
451 | }, | |
452 | }, | |
453 | { | |
454 | .callback = dmi_disable_osi_win8, | |
455 | .ident = "Dell Vostro 3446", | |
456 | .matches = { | |
457 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
458 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"), | |
459 | }, | |
460 | }, | |
461 | { | |
462 | .callback = dmi_disable_osi_win8, | |
463 | .ident = "Dell Vostro 3546", | |
464 | .matches = { | |
465 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
466 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"), | |
467 | }, | |
468 | }, | |
469 | ||
fb6e0719 SF |
470 | /* |
471 | * The following Lenovo models have a broken workaround in the | |
472 | * acpi_video backlight implementation to meet the Windows 8 | |
473 | * requirement of 101 backlight levels. Reverting to pre-Win8 | |
474 | * behavior fixes the problem. | |
475 | */ | |
476 | { | |
477 | .callback = dmi_disable_osi_win8, | |
478 | .ident = "Lenovo ThinkPad L430", | |
479 | .matches = { | |
480 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
481 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L430"), | |
482 | }, | |
483 | }, | |
484 | { | |
485 | .callback = dmi_disable_osi_win8, | |
486 | .ident = "Lenovo ThinkPad T430", | |
487 | .matches = { | |
488 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
489 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T430"), | |
490 | }, | |
491 | }, | |
492 | { | |
493 | .callback = dmi_disable_osi_win8, | |
494 | .ident = "Lenovo ThinkPad T430s", | |
495 | .matches = { | |
496 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
497 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T430s"), | |
498 | }, | |
499 | }, | |
500 | { | |
501 | .callback = dmi_disable_osi_win8, | |
502 | .ident = "Lenovo ThinkPad T530", | |
503 | .matches = { | |
504 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
505 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T530"), | |
506 | }, | |
507 | }, | |
508 | { | |
509 | .callback = dmi_disable_osi_win8, | |
510 | .ident = "Lenovo ThinkPad W530", | |
511 | .matches = { | |
512 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
513 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W530"), | |
514 | }, | |
515 | }, | |
516 | { | |
517 | .callback = dmi_disable_osi_win8, | |
518 | .ident = "Lenovo ThinkPad X1 Carbon", | |
519 | .matches = { | |
520 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
521 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X1 Carbon"), | |
522 | }, | |
523 | }, | |
524 | { | |
525 | .callback = dmi_disable_osi_win8, | |
526 | .ident = "Lenovo ThinkPad X230", | |
527 | .matches = { | |
528 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
529 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X230"), | |
530 | }, | |
531 | }, | |
532 | { | |
533 | .callback = dmi_disable_osi_win8, | |
534 | .ident = "Lenovo ThinkPad Edge E330", | |
535 | .matches = { | |
536 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
537 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Edge E330"), | |
538 | }, | |
539 | }, | |
540 | ||
e5f660eb LZ |
541 | /* |
542 | * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. | |
543 | * Linux ignores it, except for the machines enumerated below. | |
544 | */ | |
545 | ||
546 | /* | |
b4447c0d C |
547 | * Without this EEEpc exports a non working WMI interface, with |
548 | * this it exports a working "good old" eeepc_laptop interface, | |
549 | * fixing both brightness control, and rfkill not working. | |
e5f660eb LZ |
550 | */ |
551 | { | |
552 | .callback = dmi_enable_osi_linux, | |
553 | .ident = "Asus EEE PC 1015PX", | |
554 | .matches = { | |
555 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), | |
556 | DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"), | |
557 | }, | |
558 | }, | |
e5f660eb LZ |
559 | {} |
560 | }; | |
561 | ||
562 | static __init void acpi_osi_dmi_blacklisted(void) | |
563 | { | |
564 | dmi_check_system(acpi_osi_dmi_table); | |
630b3aff LW |
565 | |
566 | /* Enable _OSI("Darwin") for Apple platforms. */ | |
567 | if (x86_apple_machine) | |
568 | acpi_osi_dmi_darwin(); | |
e5f660eb LZ |
569 | } |
570 | ||
571 | int __init early_acpi_osi_init(void) | |
572 | { | |
573 | acpi_osi_dmi_blacklisted(); | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
578 | int __init acpi_osi_init(void) | |
579 | { | |
580 | acpi_install_interface_handler(acpi_osi_handler); | |
581 | acpi_osi_setup_late(); | |
582 | ||
583 | return 0; | |
584 | } |