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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 */
39struct 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
69static 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
158bool 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 (!acpi_dev_uid_match(adev, override_status_ids[i].uid))
188 continue;
189 }
190
191 *status = override_status_ids[i].status;
192 ret = true;
193 break;
194 }
195
196 return ret;
197}
198
199/*
200 * AMD systems from Renoir and Lucienne *require* that the NVME controller
201 * is put into D3 over a Modern Standby / suspend-to-idle cycle.
202 *
203 * This is "typically" accomplished using the `StorageD3Enable`
204 * property in the _DSD that is checked via the `acpi_storage_d3` function
205 * but this property was introduced after many of these systems launched
206 * and most OEM systems don't have it in their BIOS.
207 *
208 * The Microsoft documentation for StorageD3Enable mentioned that Windows has
209 * a hardcoded allowlist for D3 support, which was used for these platforms.
210 *
211 * This allows quirking on Linux in a similar fashion.
212 *
213 * Cezanne systems shouldn't *normally* need this as the BIOS includes
214 * StorageD3Enable. But for two reasons we have added it.
215 * 1) The BIOS on a number of Dell systems have ambiguity
216 * between the same value used for _ADR on ACPI nodes GPP1.DEV0 and GPP1.NVME.
217 * GPP1.NVME is needed to get StorageD3Enable node set properly.
218 * https://bugzilla.kernel.org/show_bug.cgi?id=216440
219 * https://bugzilla.kernel.org/show_bug.cgi?id=216773
220 * https://bugzilla.kernel.org/show_bug.cgi?id=217003
221 * 2) On at least one HP system StorageD3Enable is missing on the second NVME
222 disk in the system.
223 */
224static const struct x86_cpu_id storage_d3_cpu_ids[] = {
225 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 24, NULL), /* Picasso */
226 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 96, NULL), /* Renoir */
227 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 104, NULL), /* Lucienne */
228 X86_MATCH_VENDOR_FAM_MODEL(AMD, 25, 80, NULL), /* Cezanne */
229 {}
230};
231
232bool force_storage_d3(void)
233{
234 return x86_match_cpu(storage_d3_cpu_ids);
235}
236
237/*
238 * x86 ACPI boards which ship with only Android as their factory image usually
239 * declare a whole bunch of bogus I2C devices in their ACPI tables and sometimes
240 * there are issues with serdev devices on these boards too, e.g. the resource
241 * points to the wrong serdev_controller.
242 *
243 * Instantiating I2C / serdev devs for these bogus devs causes various issues,
244 * e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them.
245 * The Android x86 kernel fork shipped on these devices has some special code
246 * to remove the bogus I2C clients (and AFAICT serdevs are ignored completely).
247 *
248 * The acpi_quirk_skip_*_enumeration() functions below are used by the I2C or
249 * serdev code to skip instantiating any I2C or serdev devs on broken boards.
250 *
251 * In case of I2C an exception is made for HIDs on the i2c_acpi_known_good_ids
252 * list. These are known to always be correct (and in case of the audio-codecs
253 * the drivers heavily rely on the codec being enumerated through ACPI).
254 *
255 * Note these boards typically do actually have I2C and serdev devices,
256 * just different ones then the ones described in their DSDT. The devices
257 * which are actually present are manually instantiated by the
258 * drivers/platform/x86/x86-android-tablets.c kernel module.
259 */
260#define ACPI_QUIRK_SKIP_I2C_CLIENTS BIT(0)
261#define ACPI_QUIRK_UART1_SKIP BIT(1)
262#define ACPI_QUIRK_UART1_TTY_UART2_SKIP BIT(2)
263#define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY BIT(3)
264#define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY BIT(4)
265#define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS BIT(5)
266
267static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
268 /*
269 * 1. Devices with only the skip / don't-skip AC and battery quirks,
270 * sorted alphabetically.
271 */
272 {
273 /* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
274 .matches = {
275 DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
276 },
277 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
278 },
279 {
280 /* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
281 .matches = {
282 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
283 DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
284 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
285 },
286 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
287 },
288
289 /*
290 * 2. Devices which also have the skip i2c/serdev quirks and which
291 * need the x86-android-tablets module to properly work.
292 */
293#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
294 {
295 /* Acer Iconia One 7 B1-750 */
296 .matches = {
297 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
298 DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
299 },
300 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
301 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
302 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
303 },
304 {
305 .matches = {
306 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
307 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
308 },
309 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
310 ACPI_QUIRK_UART1_TTY_UART2_SKIP |
311 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
312 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
313 },
314 {
315 /* Lenovo Yoga Book X90F/L */
316 .matches = {
317 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
318 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
319 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
320 },
321 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
322 ACPI_QUIRK_UART1_SKIP |
323 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
324 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
325 },
326 {
327 .matches = {
328 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
329 DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
330 },
331 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
332 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
333 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
334 },
335 {
336 /* Lenovo Yoga Tablet 2 1050F/L */
337 .matches = {
338 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
339 DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
340 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
341 /* Partial match on beginning of BIOS version */
342 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
343 },
344 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
345 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
346 },
347 {
348 /* Lenovo Yoga Tab 3 Pro X90F */
349 .matches = {
350 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
351 DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
352 DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
353 },
354 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
355 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
356 },
357 {
358 /* Medion Lifetab S10346 */
359 .matches = {
360 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
361 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
362 /* Way too generic, also match on BIOS data */
363 DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
364 },
365 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
366 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
367 },
368 {
369 /* Nextbook Ares 8 (BYT version)*/
370 .matches = {
371 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
372 DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
373 },
374 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
375 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
376 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
377 },
378 {
379 /* Nextbook Ares 8A (CHT version)*/
380 .matches = {
381 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
382 DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
383 DMI_MATCH(DMI_BIOS_VERSION, "M882"),
384 },
385 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
386 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
387 },
388 {
389 /* Whitelabel (sold as various brands) TM800A550L */
390 .matches = {
391 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
392 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
393 /* Above strings are too generic, also match on BIOS version */
394 DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
395 },
396 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
397 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
398 },
399#endif
400 {}
401};
402
403#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
404static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
405 { "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
406 { "10EC5651", 0 }, /* RealTek ALC5651 audio codec */
407 { "INT33F4", 0 }, /* X-Powers AXP288 PMIC */
408 { "INT33FD", 0 }, /* Intel Crystal Cove PMIC */
409 { "INT34D3", 0 }, /* Intel Whiskey Cove PMIC */
410 { "NPCE69A", 0 }, /* Asus Transformer keyboard dock */
411 {}
412};
413
414bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
415{
416 const struct dmi_system_id *dmi_id;
417 long quirks;
418
419 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
420 if (!dmi_id)
421 return false;
422
423 quirks = (unsigned long)dmi_id->driver_data;
424 if (!(quirks & ACPI_QUIRK_SKIP_I2C_CLIENTS))
425 return false;
426
427 return acpi_match_device_ids(adev, i2c_acpi_known_good_ids);
428}
429EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
430
431int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
432{
433 struct acpi_device *adev = ACPI_COMPANION(controller_parent);
434 const struct dmi_system_id *dmi_id;
435 long quirks = 0;
436 u64 uid;
437 int ret;
438
439 *skip = false;
440
441 ret = acpi_dev_uid_to_integer(adev, &uid);
442 if (ret)
443 return 0;
444
445 /* to not match on PNP enumerated debug UARTs */
446 if (!dev_is_platform(controller_parent))
447 return 0;
448
449 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
450 if (dmi_id)
451 quirks = (unsigned long)dmi_id->driver_data;
452
453 if ((quirks & ACPI_QUIRK_UART1_SKIP) && uid == 1)
454 *skip = true;
455
456 if (quirks & ACPI_QUIRK_UART1_TTY_UART2_SKIP) {
457 if (uid == 1)
458 return -ENODEV; /* Create tty cdev instead of serdev */
459
460 if (uid == 2)
461 *skip = true;
462 }
463
464 return 0;
465}
466EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
467
468bool acpi_quirk_skip_gpio_event_handlers(void)
469{
470 const struct dmi_system_id *dmi_id;
471 long quirks;
472
473 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
474 if (!dmi_id)
475 return false;
476
477 quirks = (unsigned long)dmi_id->driver_data;
478 return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
479}
480EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
481#endif
482
483/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
484static const struct {
485 const char *hid;
486 int hrv;
487} acpi_skip_ac_and_battery_pmic_ids[] = {
488 { "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
489 { "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
490};
491
492bool acpi_quirk_skip_acpi_ac_and_battery(void)
493{
494 const struct dmi_system_id *dmi_id;
495 long quirks = 0;
496 int i;
497
498 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
499 if (dmi_id)
500 quirks = (unsigned long)dmi_id->driver_data;
501
502 if (quirks & ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY)
503 return true;
504
505 if (quirks & ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY)
506 return false;
507
508 for (i = 0; i < ARRAY_SIZE(acpi_skip_ac_and_battery_pmic_ids); i++) {
509 if (acpi_dev_present(acpi_skip_ac_and_battery_pmic_ids[i].hid, "1",
510 acpi_skip_ac_and_battery_pmic_ids[i].hrv)) {
511 pr_info_once("found native %s PMIC, skipping ACPI AC and battery devices\n",
512 acpi_skip_ac_and_battery_pmic_ids[i].hid);
513 return true;
514 }
515 }
516
517 return false;
518}
519EXPORT_SYMBOL_GPL(acpi_quirk_skip_acpi_ac_and_battery);
520
521/* This section provides a workaround for a specific x86 system
522 * which requires disabling of mwait to work correctly.
523 */
524static int __init acpi_proc_quirk_set_no_mwait(const struct dmi_system_id *id)
525{
526 pr_notice("%s detected - disabling mwait for CPU C-states\n",
527 id->ident);
528 boot_option_idle_override = IDLE_NOMWAIT;
529 return 0;
530}
531
532static const struct dmi_system_id acpi_proc_quirk_mwait_dmi_table[] __initconst = {
533 {
534 .callback = acpi_proc_quirk_set_no_mwait,
535 .ident = "Extensa 5220",
536 .matches = {
537 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
538 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
539 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
540 DMI_MATCH(DMI_BOARD_NAME, "Columbia"),
541 },
542 .driver_data = NULL,
543 },
544 {}
545};
546
547void __init acpi_proc_quirk_mwait_check(void)
548{
549 /*
550 * Check whether the system is DMI table. If yes, OSPM
551 * should not use mwait for CPU-states.
552 */
553 dmi_check_system(acpi_proc_quirk_mwait_dmi_table);
554}