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 onwards *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 some OEM systems still 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 as well as a registry key to override
210 * the BIOS, which has been used for these cases.
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 * 3) On at least one HP Rembrandt system StorageD3Enable is missing on the only
225 * NVME device.
226 */
force_storage_d3(void)227 bool force_storage_d3(void)
228 {
229 if (!cpu_feature_enabled(X86_FEATURE_ZEN))
230 return false;
231 return acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0;
232 }
233
234 /*
235 * x86 ACPI boards which ship with only Android as their factory image usually
236 * declare a whole bunch of bogus I2C devices in their ACPI tables and sometimes
237 * there are issues with serdev devices on these boards too, e.g. the resource
238 * points to the wrong serdev_controller.
239 *
240 * Instantiating I2C / serdev devs for these bogus devs causes various issues,
241 * e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them.
242 * The Android x86 kernel fork shipped on these devices has some special code
243 * to remove the bogus I2C clients (and AFAICT serdevs are ignored completely).
244 *
245 * The acpi_quirk_skip_*_enumeration() functions below are used by the I2C or
246 * serdev code to skip instantiating any I2C or serdev devs on broken boards.
247 *
248 * In case of I2C an exception is made for HIDs on the i2c_acpi_known_good_ids
249 * list. These are known to always be correct (and in case of the audio-codecs
250 * the drivers heavily rely on the codec being enumerated through ACPI).
251 *
252 * Note these boards typically do actually have I2C and serdev devices,
253 * just different ones then the ones described in their DSDT. The devices
254 * which are actually present are manually instantiated by the
255 * drivers/platform/x86/x86-android-tablets.c kernel module.
256 */
257 #define ACPI_QUIRK_SKIP_I2C_CLIENTS BIT(0)
258 #define ACPI_QUIRK_UART1_SKIP BIT(1)
259 #define ACPI_QUIRK_UART1_TTY_UART2_SKIP BIT(2)
260 #define ACPI_QUIRK_PNP_UART1_SKIP BIT(3)
261 #define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY BIT(4)
262 #define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY BIT(5)
263 #define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS BIT(6)
264
265 static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
266 /*
267 * 1. Devices with only the skip / don't-skip AC and battery quirks,
268 * sorted alphabetically.
269 */
270 {
271 /* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
272 .matches = {
273 DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
274 },
275 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
276 },
277 {
278 /* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
279 .matches = {
280 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
281 DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
282 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
283 },
284 .driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
285 },
286
287 /*
288 * 2. Devices which also have the skip i2c/serdev quirks and which
289 * need the x86-android-tablets module to properly work.
290 */
291 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
292 {
293 /* Acer Iconia One 7 B1-750 */
294 .matches = {
295 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
296 DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
297 },
298 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
299 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
300 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
301 },
302 {
303 .matches = {
304 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
305 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
306 },
307 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
308 ACPI_QUIRK_UART1_TTY_UART2_SKIP |
309 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
310 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
311 },
312 {
313 /* Lenovo Yoga Book X90F/L */
314 .matches = {
315 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
316 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
317 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
318 },
319 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
320 ACPI_QUIRK_UART1_SKIP |
321 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
322 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
323 },
324 {
325 .matches = {
326 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
327 DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
328 },
329 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
330 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
331 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
332 },
333 {
334 /* Lenovo Yoga Tablet 2 1050F/L */
335 .matches = {
336 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
337 DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
338 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
339 /* Partial match on beginning of BIOS version */
340 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
341 },
342 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
343 ACPI_QUIRK_PNP_UART1_SKIP |
344 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
345 },
346 {
347 /* Lenovo Yoga Tab 3 Pro X90F */
348 .matches = {
349 DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
351 DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
352 },
353 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
354 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
355 },
356 {
357 /* Medion Lifetab S10346 */
358 .matches = {
359 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
360 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
361 /* Way too generic, also match on BIOS data */
362 DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
363 },
364 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
365 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
366 },
367 {
368 /* Nextbook Ares 8 (BYT version)*/
369 .matches = {
370 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
371 DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
372 },
373 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
374 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
375 ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
376 },
377 {
378 /* Nextbook Ares 8A (CHT version)*/
379 .matches = {
380 DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
381 DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
382 DMI_MATCH(DMI_BIOS_VERSION, "M882"),
383 },
384 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
385 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
386 },
387 {
388 /* Whitelabel (sold as various brands) TM800A550L */
389 .matches = {
390 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
391 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
392 /* Above strings are too generic, also match on BIOS version */
393 DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
394 },
395 .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
396 ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
397 },
398 #endif
399 {}
400 };
401
402 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
403 static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
404 { "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
405 { "10EC5651", 0 }, /* RealTek ALC5651 audio codec */
406 { "INT33F4", 0 }, /* X-Powers AXP288 PMIC */
407 { "INT33FD", 0 }, /* Intel Crystal Cove PMIC */
408 { "INT34D3", 0 }, /* Intel Whiskey Cove PMIC */
409 { "NPCE69A", 0 }, /* Asus Transformer keyboard dock */
410 {}
411 };
412
acpi_quirk_skip_i2c_client_enumeration(struct acpi_device * adev)413 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
414 {
415 const struct dmi_system_id *dmi_id;
416 long quirks;
417
418 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
419 if (!dmi_id)
420 return false;
421
422 quirks = (unsigned long)dmi_id->driver_data;
423 if (!(quirks & ACPI_QUIRK_SKIP_I2C_CLIENTS))
424 return false;
425
426 return acpi_match_device_ids(adev, i2c_acpi_known_good_ids);
427 }
428 EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
429
acpi_dmi_skip_serdev_enumeration(struct device * controller_parent,bool * skip)430 static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
431 {
432 struct acpi_device *adev = ACPI_COMPANION(controller_parent);
433 const struct dmi_system_id *dmi_id;
434 long quirks = 0;
435 u64 uid;
436 int ret;
437
438 ret = acpi_dev_uid_to_integer(adev, &uid);
439 if (ret)
440 return 0;
441
442 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
443 if (dmi_id)
444 quirks = (unsigned long)dmi_id->driver_data;
445
446 if (!dev_is_platform(controller_parent)) {
447 /* PNP enumerated UARTs */
448 if ((quirks & ACPI_QUIRK_PNP_UART1_SKIP) && uid == 1)
449 *skip = true;
450
451 return 0;
452 }
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
acpi_quirk_skip_gpio_event_handlers(void)468 bool 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 }
480 EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
481 #else
acpi_dmi_skip_serdev_enumeration(struct device * controller_parent,bool * skip)482 static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
483 {
484 return 0;
485 }
486 #endif
487
acpi_quirk_skip_serdev_enumeration(struct device * controller_parent,bool * skip)488 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
489 {
490 *skip = false;
491
492 return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
493 }
494 EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
495
496 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
497 static const struct {
498 const char *hid;
499 int hrv;
500 } acpi_skip_ac_and_battery_pmic_ids[] = {
501 { "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
502 { "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
503 };
504
acpi_quirk_skip_acpi_ac_and_battery(void)505 bool acpi_quirk_skip_acpi_ac_and_battery(void)
506 {
507 const struct dmi_system_id *dmi_id;
508 long quirks = 0;
509 int i;
510
511 dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
512 if (dmi_id)
513 quirks = (unsigned long)dmi_id->driver_data;
514
515 if (quirks & ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY)
516 return true;
517
518 if (quirks & ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY)
519 return false;
520
521 for (i = 0; i < ARRAY_SIZE(acpi_skip_ac_and_battery_pmic_ids); i++) {
522 if (acpi_dev_present(acpi_skip_ac_and_battery_pmic_ids[i].hid, "1",
523 acpi_skip_ac_and_battery_pmic_ids[i].hrv)) {
524 pr_info_once("found native %s PMIC, skipping ACPI AC and battery devices\n",
525 acpi_skip_ac_and_battery_pmic_ids[i].hid);
526 return true;
527 }
528 }
529
530 return false;
531 }
532 EXPORT_SYMBOL_GPL(acpi_quirk_skip_acpi_ac_and_battery);
533
534 /* This section provides a workaround for a specific x86 system
535 * which requires disabling of mwait to work correctly.
536 */
acpi_proc_quirk_set_no_mwait(const struct dmi_system_id * id)537 static int __init acpi_proc_quirk_set_no_mwait(const struct dmi_system_id *id)
538 {
539 pr_notice("%s detected - disabling mwait for CPU C-states\n",
540 id->ident);
541 boot_option_idle_override = IDLE_NOMWAIT;
542 return 0;
543 }
544
545 static const struct dmi_system_id acpi_proc_quirk_mwait_dmi_table[] __initconst = {
546 {
547 .callback = acpi_proc_quirk_set_no_mwait,
548 .ident = "Extensa 5220",
549 .matches = {
550 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
551 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
552 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
553 DMI_MATCH(DMI_BOARD_NAME, "Columbia"),
554 },
555 .driver_data = NULL,
556 },
557 {}
558 };
559
acpi_proc_quirk_mwait_check(void)560 void __init acpi_proc_quirk_mwait_check(void)
561 {
562 /*
563 * Check whether the system is DMI table. If yes, OSPM
564 * should not use mwait for CPU-states.
565 */
566 dmi_check_system(acpi_proc_quirk_mwait_dmi_table);
567 }
568