1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * X86 ACPI Utility Functions
4 *
5 * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
6 *
7 * Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
8 * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
9 */
10
11 #define pr_fmt(fmt) "ACPI: " fmt
12
13 #include <linux/acpi.h>
14 #include <linux/dmi.h>
15 #include <linux/platform_device.h>
16 #include <asm/cpu_device_id.h>
17 #include <asm/intel-family.h>
18 #include "../internal.h"
19
20 /*
21 * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because
22 * some recent Windows drivers bind to one device but poke at multiple
23 * devices at the same time, so the others get hidden.
24 *
25 * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows
26 * driver bugs. We use DMI matching to match known cases of this.
27 *
28 * Likewise sometimes some not-actually present devices are sometimes
29 * reported as present, which may cause issues.
30 *
31 * We work around this by using the below quirk list to override the status
32 * reported by the _STA method with a fixed value (ACPI_STA_DEFAULT or 0).
33 * Note this MUST only be done for devices where this is safe.
34 *
35 * This status overriding is limited to specific CPU (SoC) models both to
36 * avoid potentially causing trouble on other models and because some HIDs
37 * are re-used on different SoCs for completely different devices.
38 */
39 struct override_status_id {
40 struct acpi_device_id hid[2];
41 struct x86_cpu_id cpu_ids[2];
42 struct dmi_system_id dmi_ids[2]; /* Optional */
43 const char *uid;
44 const char *path;
45 unsigned long long status;
46 };
47
48 #define ENTRY(status, hid, uid, path, cpu_model, dmi...) { \
49 { { hid, }, {} }, \
50 { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \
51 { { .matches = dmi }, {} }, \
52 uid, \
53 path, \
54 status, \
55 }
56
57 #define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
58 ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi)
59
60 #define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
61 ENTRY(0, hid, uid, NULL, cpu_model, dmi)
62
63 #define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
64 ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi)
65
66 #define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
67 ENTRY(0, "", NULL, path, cpu_model, dmi)
68
69 static const struct override_status_id override_status_ids[] = {
70 /*
71 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
72 * but Linux uses a separate PWM driver, harmless if not used.
73 */
74 PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}),
75 PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}),
76
77 /* The Xiaomi Mi Pad 2 uses PWM2 for touchkeys backlight control */
78 PRESENT_ENTRY_HID("80862289", "2", ATOM_AIRMONT, {
79 DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
80 DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
81 }),
82
83 /*
84 * The INT0002 device is necessary to clear wakeup interrupt sources
85 * on Cherry Trail devices, without it we get nobody cared IRQ msgs.
86 */
87 PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}),
88 /*
89 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides
90 * the touchscreen ACPI device until a certain time
91 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
92 * *and* _STA has been called at least 3 times since.
93 */
94 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
95 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
96 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
97 }),
98 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
99 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
100 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
101 }),
102
103 /*
104 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the
105 * drivers sometimes cause crashes under Windows and this is how the
106 * manufacturer has solved this :| The DMI match may not seem unique,
107 * but it is. In the 67000+ DMI decode dumps from linux-hardware.org
108 * only 116 have board_vendor set to "AMI Corporation" and of those 116
109 * only the GPD win and pocket entries' board_name is "Default string".
110 *
111 * Unfortunately the GPD pocket also uses these strings and its BIOS
112 * was copy-pasted from the GPD win, so it has a disabled KIOX000A
113 * node which we should not enable, thus we also check the BIOS date.
114 */
115 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
116 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
117 DMI_MATCH(DMI_BOARD_NAME, "Default string"),
118 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
119 DMI_MATCH(DMI_BIOS_DATE, "02/21/2017")
120 }),
121 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
122 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
123 DMI_MATCH(DMI_BOARD_NAME, "Default string"),
124 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
125 DMI_MATCH(DMI_BIOS_DATE, "03/20/2017")
126 }),
127 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
128 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
129 DMI_MATCH(DMI_BOARD_NAME, "Default string"),
130 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
131 DMI_MATCH(DMI_BIOS_DATE, "05/25/2017")
132 }),
133
134 /*
135 * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO
136 * mmc controller enabled and that has a child-device which _PS3
137 * method sets a GPIO causing the PCI wifi card to turn off.
138 * See above remark about uniqueness of the DMI match.
139 */
140 NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, {
141 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
142 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
143 DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
144 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
145 }),
146
147 /*
148 * The LSM303D on the Lenovo Yoga Tablet 2 series is present
149 * as both ACCL0001 and MAGN0001. As we can only ever register an
150 * i2c client for one of them, ignore MAGN0001.
151 */
152 NOT_PRESENT_ENTRY_HID("MAGN0001", "1", ATOM_SILVERMONT, {
153 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
154 DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
155 }),
156 };
157
acpi_device_override_status(struct acpi_device * adev,unsigned long long * status)158 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
159 {
160 bool ret = false;
161 unsigned int i;
162
163 for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
164 if (!x86_match_cpu(override_status_ids[i].cpu_ids))
165 continue;
166
167 if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
168 !dmi_check_system(override_status_ids[i].dmi_ids))
169 continue;
170
171 if (override_status_ids[i].path) {
172 struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL };
173 bool match;
174
175 if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path))
176 continue;
177
178 match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0;
179 kfree(path.pointer);
180
181 if (!match)
182 continue;
183 } else {
184 if (acpi_match_device_ids(adev, override_status_ids[i].hid))
185 continue;
186
187 if (!adev->pnp.unique_id ||
188 strcmp(adev->pnp.unique_id, override_status_ids[i].uid))
189 continue;
190 }
191
192 *status = override_status_ids[i].status;
193 ret = true;
194 break;
195 }
196
197 return ret;
198 }
199
200 /*
201 * AMD systems from Renoir and Lucienne *require* that the NVME controller
202 * is put into D3 over a Modern Standby / suspend-to-idle cycle.
203 *
204 * This is "typically" accomplished using the `StorageD3Enable`
205 * property in the _DSD that is checked via the `acpi_storage_d3` function
206 * but this property was introduced after many of these systems launched
207 * and most OEM systems don't have it in their BIOS.
208 *
209 * The Microsoft documentation for StorageD3Enable mentioned that Windows has
210 * a hardcoded allowlist for D3 support, which was used for these platforms.
211 *
212 * This allows quirking on Linux in a similar fashion.
213 *
214 * Cezanne systems shouldn't *normally* need this as the BIOS includes
215 * StorageD3Enable. But for two reasons we have added it.
216 * 1) The BIOS on a number of Dell systems have ambiguity
217 * between the same value used for _ADR on ACPI nodes GPP1.DEV0 and GPP1.NVME.
218 * GPP1.NVME is needed to get StorageD3Enable node set properly.
219 * https://bugzilla.kernel.org/show_bug.cgi?id=216440
220 * https://bugzilla.kernel.org/show_bug.cgi?id=216773
221 * https://bugzilla.kernel.org/show_bug.cgi?id=217003
222 * 2) On at least one HP system StorageD3Enable is missing on the second NVME
223 disk in the system.
224 */
225 static const struct x86_cpu_id storage_d3_cpu_ids[] = {
226 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 24, NULL), /* Picasso */
227 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 96, NULL), /* Renoir */
228 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 104, NULL), /* Lucienne */
229 X86_MATCH_VENDOR_FAM_MODEL(AMD, 25, 80, NULL), /* Cezanne */
230 {}
231 };
232
force_storage_d3(void)233 bool force_storage_d3(void)
234 {
235 return x86_match_cpu(storage_d3_cpu_ids);
236 }
237
238 /*
239 * x86 ACPI boards which ship with only Android as their factory image usually
240 * declare a whole bunch of bogus I2C devices in their ACPI tables and sometimes
241 * there are issues with serdev devices on these boards too, e.g. the resource
242 * points to the wrong serdev_controller.
243 *
244 * Instantiating I2C / serdev devs for these bogus devs causes various issues,
245 * e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them.
246 * The Android x86 kernel fork shipped on these devices has some special code
247 * to remove the bogus I2C clients (and AFAICT serdevs are ignored completely).
248 *
249 * The acpi_quirk_skip_*_enumeration() functions below are used by the I2C or
250 * serdev code to skip instantiating any I2C or serdev devs on broken boards.
251 *
252 * In case of I2C an exception is made for HIDs on the i2c_acpi_known_good_ids
253 * list. These are known to always be correct (and in case of the audio-codecs
254 * the drivers heavily rely on the codec being enumerated through ACPI).
255 *
256 * Note these boards typically do actually have I2C and serdev devices,
257 * just different ones then the ones described in their DSDT. The devices
258 * which are actually present are manually instantiated by the
259 * drivers/platform/x86/x86-android-tablets.c kernel module.
260 */
261 #define ACPI_QUIRK_SKIP_I2C_CLIENTS BIT(0)
262 #define ACPI_QUIRK_UART1_SKIP BIT(1)
263 #define ACPI_QUIRK_UART1_TTY_UART2_SKIP BIT(2)
264 #define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY BIT(3)
265 #define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY BIT(4)
266 #define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS BIT(5)
267
268 static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
269 /*
270 * 1. Devices with only the skip / don't-skip AC and battery quirks,
271 * sorted alphabetically.
272 */
273 {
274 /* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
275 .matches = {
276 DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
277 },
278 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
279 },
280 {
281 /* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
282 .matches = {
283 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
284 DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
285 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
286 },
287 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
288 },
289
290 /*
291 * 2. Devices which also have the skip i2c/serdev quirks and which
292 * need the x86-android-tablets module to properly work.
293 */
294 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
295 {
296 /* Acer Iconia One 7 B1-750 */
297 .matches = {
298 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
299 DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
300 },
301 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
302 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
303 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
304 },
305 {
306 .matches = {
307 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
308 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
309 },
310 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
311 ACPI_QUIRK_UART1_TTY_UART2_SKIP |
312 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
313 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
314 },
315 {
316 /* Lenovo Yoga Book X90F/L */
317 .matches = {
318 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
319 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
320 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
321 },
322 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
323 ACPI_QUIRK_UART1_SKIP |
324 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
325 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
326 },
327 {
328 .matches = {
329 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
330 DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
331 },
332 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
333 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
334 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
335 },
336 {
337 /* Lenovo Yoga Tablet 2 1050F/L */
338 .matches = {
339 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
340 DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
341 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
342 /* Partial match on beginning of BIOS version */
343 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
344 },
345 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
346 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
347 },
348 {
349 /* Lenovo Yoga Tab 3 Pro X90F */
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
353 DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
354 },
355 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
356 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
357 },
358 {
359 /* Medion Lifetab S10346 */
360 .matches = {
361 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
362 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
363 /* Way too generic, also match on BIOS data */
364 DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
365 },
366 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
367 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
368 },
369 {
370 /* Nextbook Ares 8 (BYT version)*/
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
374 },
375 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
376 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
377 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
378 },
379 {
380 /* Nextbook Ares 8A (CHT version)*/
381 .matches = {
382 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
383 DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
384 DMI_MATCH(DMI_BIOS_VERSION, "M882"),
385 },
386 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
387 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
388 },
389 {
390 /* Whitelabel (sold as various brands) TM800A550L */
391 .matches = {
392 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
393 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
394 /* Above strings are too generic, also match on BIOS version */
395 DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
396 },
397 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
398 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
399 },
400 #endif
401 {}
402 };
403
404 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
405 static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
406 { "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
407 { "10EC5651", 0 }, /* RealTek ALC5651 audio codec */
408 { "INT33F4", 0 }, /* X-Powers AXP288 PMIC */
409 { "INT33FD", 0 }, /* Intel Crystal Cove PMIC */
410 { "INT34D3", 0 }, /* Intel Whiskey Cove PMIC */
411 { "NPCE69A", 0 }, /* Asus Transformer keyboard dock */
412 {}
413 };
414
acpi_quirk_skip_i2c_client_enumeration(struct acpi_device * adev)415 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
416 {
417 const struct dmi_system_id *dmi_id;
418 long quirks;
419
420 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
421 if (!dmi_id)
422 return false;
423
424 quirks = (unsigned long)dmi_id->driver_data;
425 if (!(quirks & ACPI_QUIRK_SKIP_I2C_CLIENTS))
426 return false;
427
428 return acpi_match_device_ids(adev, i2c_acpi_known_good_ids);
429 }
430 EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
431
acpi_quirk_skip_serdev_enumeration(struct device * controller_parent,bool * skip)432 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
433 {
434 struct acpi_device *adev = ACPI_COMPANION(controller_parent);
435 const struct dmi_system_id *dmi_id;
436 long quirks = 0;
437 u64 uid;
438 int ret;
439
440 *skip = false;
441
442 ret = acpi_dev_uid_to_integer(adev, &uid);
443 if (ret)
444 return 0;
445
446 /* to not match on PNP enumerated debug UARTs */
447 if (!dev_is_platform(controller_parent))
448 return 0;
449
450 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
451 if (dmi_id)
452 quirks = (unsigned long)dmi_id->driver_data;
453
454 if ((quirks & ACPI_QUIRK_UART1_SKIP) && uid == 1)
455 *skip = true;
456
457 if (quirks & ACPI_QUIRK_UART1_TTY_UART2_SKIP) {
458 if (uid == 1)
459 return -ENODEV; /* Create tty cdev instead of serdev */
460
461 if (uid == 2)
462 *skip = true;
463 }
464
465 return 0;
466 }
467 EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
468
acpi_quirk_skip_gpio_event_handlers(void)469 bool acpi_quirk_skip_gpio_event_handlers(void)
470 {
471 const struct dmi_system_id *dmi_id;
472 long quirks;
473
474 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
475 if (!dmi_id)
476 return false;
477
478 quirks = (unsigned long)dmi_id->driver_data;
479 return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
480 }
481 EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
482 #endif
483
484 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
485 static const struct {
486 const char *hid;
487 int hrv;
488 } acpi_skip_ac_and_battery_pmic_ids[] = {
489 { "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
490 { "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
491 };
492
acpi_quirk_skip_acpi_ac_and_battery(void)493 bool acpi_quirk_skip_acpi_ac_and_battery(void)
494 {
495 const struct dmi_system_id *dmi_id;
496 long quirks = 0;
497 int i;
498
499 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
500 if (dmi_id)
501 quirks = (unsigned long)dmi_id->driver_data;
502
503 if (quirks & ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY)
504 return true;
505
506 if (quirks & ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY)
507 return false;
508
509 for (i = 0; i < ARRAY_SIZE(acpi_skip_ac_and_battery_pmic_ids); i++) {
510 if (acpi_dev_present(acpi_skip_ac_and_battery_pmic_ids[i].hid, "1",
511 acpi_skip_ac_and_battery_pmic_ids[i].hrv)) {
512 pr_info_once("found native %s PMIC, skipping ACPI AC and battery devices\n",
513 acpi_skip_ac_and_battery_pmic_ids[i].hid);
514 return true;
515 }
516 }
517
518 return false;
519 }
520 EXPORT_SYMBOL_GPL(acpi_quirk_skip_acpi_ac_and_battery);
521
522 /* This section provides a workaround for a specific x86 system
523 * which requires disabling of mwait to work correctly.
524 */
acpi_proc_quirk_set_no_mwait(const struct dmi_system_id * id)525 static int __init acpi_proc_quirk_set_no_mwait(const struct dmi_system_id *id)
526 {
527 pr_notice("%s detected - disabling mwait for CPU C-states\n",
528 id->ident);
529 boot_option_idle_override = IDLE_NOMWAIT;
530 return 0;
531 }
532
533 static const struct dmi_system_id acpi_proc_quirk_mwait_dmi_table[] __initconst = {
534 {
535 .callback = acpi_proc_quirk_set_no_mwait,
536 .ident = "Extensa 5220",
537 .matches = {
538 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
539 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
540 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
541 DMI_MATCH(DMI_BOARD_NAME, "Columbia"),
542 },
543 .driver_data = NULL,
544 },
545 {}
546 };
547
acpi_proc_quirk_mwait_check(void)548 void __init acpi_proc_quirk_mwait_check(void)
549 {
550 /*
551 * Check whether the system is DMI table. If yes, OSPM
552 * should not use mwait for CPU-states.
553 */
554 dmi_check_system(acpi_proc_quirk_mwait_dmi_table);
555 }
556