utils.c

  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/pci.h>
 16#include <linux/platform_device.h>
 17#include <asm/cpu_device_id.h>
 18#include <asm/intel-family.h>
 19#include "../internal.h"
 20
 21/*
 22 * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because
 23 * some recent Windows drivers bind to one device but poke at multiple
 24 * devices at the same time, so the others get hidden.
 25 *
 26 * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows
 27 * driver bugs. We use DMI matching to match known cases of this.
 28 *
 29 * Likewise sometimes some not-actually present devices are sometimes
 30 * reported as present, which may cause issues.
 31 *
 32 * We work around this by using the below quirk list to override the status
 33 * reported by the _STA method with a fixed value (ACPI_STA_DEFAULT or 0).
 34 * Note this MUST only be done for devices where this is safe.
 35 *
 36 * This status overriding is limited to specific CPU (SoC) models both to
 37 * avoid potentially causing trouble on other models and because some HIDs
 38 * are re-used on different SoCs for completely different devices.
 39 */
 40struct override_status_id {
 41	struct acpi_device_id hid[2];
 42	struct x86_cpu_id cpu_ids[2];
 43	struct dmi_system_id dmi_ids[2]; /* Optional */
 44	const char *uid;
 45	const char *path;
 46	unsigned long long status;
 47};
 48
 49#define ENTRY(status, hid, uid, path, cpu_vfm, dmi...) {		\
 50	{ { hid, }, {} },						\
 51	{ X86_MATCH_VFM(cpu_vfm, NULL), {} },				\
 52	{ { .matches = dmi }, {} },					\
 53	uid,								\
 54	path,								\
 55	status,								\
 56}
 57
 58#define PRESENT_ENTRY_HID(hid, uid, cpu_vfm, dmi...) \
 59	ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_vfm, dmi)
 60
 61#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_vfm, dmi...) \
 62	ENTRY(0, hid, uid, NULL, cpu_vfm, dmi)
 63
 64#define PRESENT_ENTRY_PATH(path, cpu_vfm, dmi...) \
 65	ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_vfm, dmi)
 66
 67#define NOT_PRESENT_ENTRY_PATH(path, cpu_vfm, dmi...) \
 68	ENTRY(0, "", NULL, path, cpu_vfm, dmi)
 69
 70static const struct override_status_id override_status_ids[] = {
 71	/*
 72	 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
 73	 * but Linux uses a separate PWM driver, harmless if not used.
 74	 */
 75	PRESENT_ENTRY_HID("80860F09", "1", INTEL_ATOM_SILVERMONT, {}),
 76	PRESENT_ENTRY_HID("80862288", "1", INTEL_ATOM_AIRMONT, {}),
 77
 78	/* The Xiaomi Mi Pad 2 uses PWM2 for touchkeys backlight control */
 79	PRESENT_ENTRY_HID("80862289", "2", INTEL_ATOM_AIRMONT, {
 80		DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
 81		DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
 82	      }),
 83
 84	/*
 85	 * Lenovo Yoga Book uses PWM2 for touch keyboard backlight control.
 86	 * It needs to be enabled only for the Android device version (YB1-X90*
 87	 * aka YETI-11); the Windows version (YB1-X91*) uses ACPI control
 88	 * methods.
 89	 */
 90	PRESENT_ENTRY_HID("80862289", "2", INTEL_ATOM_AIRMONT, {
 91		DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
 92		DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
 93		DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
 94	      }),
 95
 96	/*
 97	 * The INT0002 device is necessary to clear wakeup interrupt sources
 98	 * on Cherry Trail devices, without it we get nobody cared IRQ msgs.
 99	 */
100	PRESENT_ENTRY_HID("INT0002", "1", INTEL_ATOM_AIRMONT, {}),
101	/*
102	 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides
103	 * the touchscreen ACPI device until a certain time
104	 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
105	 * *and* _STA has been called at least 3 times since.
106	 */
107	PRESENT_ENTRY_HID("SYNA7500", "1", INTEL_HASWELL_L, {
108		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
109		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
110	      }),
111	PRESENT_ENTRY_HID("SYNA7500", "1", INTEL_HASWELL_L, {
112		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
113		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
114	      }),
115
116	/*
117	 * The Dell XPS 15 9550 has a SMO8110 accelerometer /
118	 * HDD freefall sensor which is wrongly marked as not present.
119	 */
120	PRESENT_ENTRY_HID("SMO8810", "1", INTEL_SKYLAKE, {
121		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
122		DMI_MATCH(DMI_PRODUCT_NAME, "XPS 15 9550"),
123	      }),
124
125	/*
126	 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the
127	 * drivers sometimes cause crashes under Windows and this is how the
128	 * manufacturer has solved this :|  The DMI match may not seem unique,
129	 * but it is. In the 67000+ DMI decode dumps from linux-hardware.org
130	 * only 116 have board_vendor set to "AMI Corporation" and of those 116
131	 * only the GPD win and pocket entries' board_name is "Default string".
132	 *
133	 * Unfortunately the GPD pocket also uses these strings and its BIOS
134	 * was copy-pasted from the GPD win, so it has a disabled KIOX000A
135	 * node which we should not enable, thus we also check the BIOS date.
136	 */
137	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
138		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
139		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
140		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
141		DMI_MATCH(DMI_BIOS_DATE, "02/21/2017")
142	      }),
143	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
144		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
145		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
146		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
147		DMI_MATCH(DMI_BIOS_DATE, "03/20/2017")
148	      }),
149	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
150		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
151		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
152		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
153		DMI_MATCH(DMI_BIOS_DATE, "05/25/2017")
154	      }),
155
156	/*
157	 * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO
158	 * mmc controller enabled and that has a child-device which _PS3
159	 * method sets a GPIO causing the PCI wifi card to turn off.
160	 * See above remark about uniqueness of the DMI match.
161	 */
162	NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", INTEL_ATOM_AIRMONT, {
163		DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
164		DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
165		DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
166		DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
167	      }),
168
169	/*
170	 * The LSM303D on the Lenovo Yoga Tablet 2 series is present
171	 * as both ACCL0001 and MAGN0001. As we can only ever register an
172	 * i2c client for one of them, ignore MAGN0001.
173	 */
174	NOT_PRESENT_ENTRY_HID("MAGN0001", "1", INTEL_ATOM_SILVERMONT, {
175		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
176		DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
177	      }),
178};
179
180bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
181{
182	bool ret = false;
183	unsigned int i;
184
185	for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
186		if (!x86_match_cpu(override_status_ids[i].cpu_ids))
187			continue;
188
189		if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
190		    !dmi_check_system(override_status_ids[i].dmi_ids))
191			continue;
192
193		if (override_status_ids[i].path) {
194			struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL };
195			bool match;
196
197			if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path))
198				continue;
199
200			match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0;
201			kfree(path.pointer);
202
203			if (!match)
204				continue;
205		} else {
206			if (acpi_match_device_ids(adev, override_status_ids[i].hid))
207				continue;
208
209			if (!acpi_dev_uid_match(adev, override_status_ids[i].uid))
210				continue;
211		}
212
213		*status = override_status_ids[i].status;
214		ret = true;
215		break;
216	}
217
218	return ret;
219}
220
221/*
222 * AMD systems from Renoir onwards *require* that the NVME controller
223 * is put into D3 over a Modern Standby / suspend-to-idle cycle.
224 *
225 * This is "typically" accomplished using the `StorageD3Enable`
226 * property in the _DSD that is checked via the `acpi_storage_d3` function
227 * but some OEM systems still don't have it in their BIOS.
228 *
229 * The Microsoft documentation for StorageD3Enable mentioned that Windows has
230 * a hardcoded allowlist for D3 support as well as a registry key to override
231 * the BIOS, which has been used for these cases.
232 *
233 * This allows quirking on Linux in a similar fashion.
234 *
235 * Cezanne systems shouldn't *normally* need this as the BIOS includes
236 * StorageD3Enable.  But for two reasons we have added it.
237 * 1) The BIOS on a number of Dell systems have ambiguity
238 *    between the same value used for _ADR on ACPI nodes GPP1.DEV0 and GPP1.NVME.
239 *    GPP1.NVME is needed to get StorageD3Enable node set properly.
240 *    https://bugzilla.kernel.org/show_bug.cgi?id=216440
241 *    https://bugzilla.kernel.org/show_bug.cgi?id=216773
242 *    https://bugzilla.kernel.org/show_bug.cgi?id=217003
243 * 2) On at least one HP system StorageD3Enable is missing on the second NVME
244 *    disk in the system.
245 * 3) On at least one HP Rembrandt system StorageD3Enable is missing on the only
246 *    NVME device.
247 */
248bool force_storage_d3(void)
249{
250	if (!cpu_feature_enabled(X86_FEATURE_ZEN))
251		return false;
252	return acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0;
253}
254
255/*
256 * x86 ACPI boards which ship with only Android as their factory image usually
257 * declare a whole bunch of bogus I2C devices in their ACPI tables and sometimes
258 * there are issues with serdev devices on these boards too, e.g. the resource
259 * points to the wrong serdev_controller.
260 *
261 * Instantiating I2C / serdev devs for these bogus devs causes various issues,
262 * e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them.
263 * The Android x86 kernel fork shipped on these devices has some special code
264 * to remove the bogus I2C clients (and AFAICT serdevs are ignored completely).
265 *
266 * The acpi_quirk_skip_*_enumeration() functions below are used by the I2C or
267 * serdev code to skip instantiating any I2C or serdev devs on broken boards.
268 *
269 * In case of I2C an exception is made for HIDs on the i2c_acpi_known_good_ids
270 * list. These are known to always be correct (and in case of the audio-codecs
271 * the drivers heavily rely on the codec being enumerated through ACPI).
272 *
273 * Note these boards typically do actually have I2C and serdev devices,
274 * just different ones then the ones described in their DSDT. The devices
275 * which are actually present are manually instantiated by the
276 * drivers/platform/x86/x86-android-tablets.c kernel module.
277 */
278#define ACPI_QUIRK_SKIP_I2C_CLIENTS				BIT(0)
279#define ACPI_QUIRK_UART1_SKIP					BIT(1)
280#define ACPI_QUIRK_UART1_TTY_UART2_SKIP				BIT(2)
281#define ACPI_QUIRK_PNP_UART1_SKIP				BIT(3)
282#define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY			BIT(4)
283#define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY			BIT(5)
284#define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS			BIT(6)
285
286static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
287	/*
288	 * 1. Devices with only the skip / don't-skip AC and battery quirks,
289	 *    sorted alphabetically.
290	 */
291	{
292		/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
293		.matches = {
294			DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
295		},
296		.driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
297	},
298	{
299		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
300		.matches = {
301			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
302			DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
303			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
304		},
305		.driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
306	},
307
308	/*
309	 * 2. Devices which also have the skip i2c/serdev quirks and which
310	 *    need the x86-android-tablets module to properly work.
311	 *    Sorted alphabetically.
312	 */
313#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
314	{
315		/* Acer Iconia One 7 B1-750 */
316		.matches = {
317			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
318			DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
319		},
320		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
321					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
322					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
323	},
324	{
325		/* Acer Iconia One 8 A1-840 (non FHD version) */
326		.matches = {
327			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
328			DMI_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
329			/* Above strings are too generic also match BIOS date */
330			DMI_MATCH(DMI_BIOS_DATE, "04/01/2014"),
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		/* Asus ME176C tablet */
338		.matches = {
339			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
340			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
341		},
342		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
343					ACPI_QUIRK_UART1_TTY_UART2_SKIP |
344					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
345					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
346	},
347	{
348		/* Asus TF103C transformer 2-in-1 */
349		.matches = {
350			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
351			DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
352		},
353		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
354					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
355					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
356	},
357	{
358		/* Lenovo Yoga Book X90F/L */
359		.matches = {
360			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
361			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
362			DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
363		},
364		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
365					ACPI_QUIRK_UART1_SKIP |
366					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
367					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
368	},
369	{
370		/* Lenovo Yoga Tablet 2 1050F/L */
371		.matches = {
372			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
373			DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
374			DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
375			/* Partial match on beginning of BIOS version */
376			DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
377		},
378		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
379					ACPI_QUIRK_PNP_UART1_SKIP |
380					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
381	},
382	{
383		/* Lenovo Yoga Tab 3 Pro X90F */
384		.matches = {
385			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
386			DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
387		},
388		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
389					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
390					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
391	},
392	{
393		/* Medion Lifetab S10346 */
394		.matches = {
395			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
396			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
397			/* Way too generic, also match on BIOS data */
398			DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
399		},
400		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
401					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
402	},
403	{
404		/* Nextbook Ares 8 (BYT version)*/
405		.matches = {
406			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
407			DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
408		},
409		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
410					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
411					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
412	},
413	{
414		/* Nextbook Ares 8A (CHT version)*/
415		.matches = {
416			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
417			DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
418			DMI_MATCH(DMI_BIOS_VERSION, "M882"),
419		},
420		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
421					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
422	},
423	{
424		/* Vexia Edu Atla 10 tablet 5V version */
425		.matches = {
426			/* Having all 3 of these not set is somewhat unique */
427			DMI_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
428			DMI_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
429			DMI_MATCH(DMI_BOARD_NAME, "To be filled by O.E.M."),
430			/* Above strings are too generic, also match on BIOS date */
431			DMI_MATCH(DMI_BIOS_DATE, "05/14/2015"),
432		},
433		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
434					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
435	},
436	{
437		/* Vexia Edu Atla 10 tablet 9V version */
438		.matches = {
439			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
440			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
441			/* Above strings are too generic, also match on BIOS date */
442			DMI_MATCH(DMI_BIOS_DATE, "08/25/2014"),
443		},
444		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
445					ACPI_QUIRK_UART1_SKIP |
446					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
447					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
448	},
449	{
450		/* Whitelabel (sold as various brands) TM800A550L */
451		.matches = {
452			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
453			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
454			/* Above strings are too generic, also match on BIOS version */
455			DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
456		},
457		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
458					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
459	},
460#endif
461	{}
462};
463
464#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
465static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
466	{ "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
467	{ "10EC5651", 0 }, /* RealTek ALC5651 audio codec */
468	{ "INT33F4", 0 },  /* X-Powers AXP288 PMIC */
469	{ "INT33F5", 0 },  /* TI Dollar Cove PMIC */
470	{ "INT33FD", 0 },  /* Intel Crystal Cove PMIC */
471	{ "INT34D3", 0 },  /* Intel Whiskey Cove PMIC */
472	{ "NPCE69A", 0 },  /* Asus Transformer keyboard dock */
473	{}
474};
475
476bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
477{
478	const struct dmi_system_id *dmi_id;
479	long quirks;
480
481	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
482	if (!dmi_id)
483		return false;
484
485	quirks = (unsigned long)dmi_id->driver_data;
486	if (!(quirks & ACPI_QUIRK_SKIP_I2C_CLIENTS))
487		return false;
488
489	return acpi_match_device_ids(adev, i2c_acpi_known_good_ids);
490}
491EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
492
493static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
494{
495	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
496	const struct dmi_system_id *dmi_id;
497	long quirks = 0;
498	u64 uid = 0;
499
500	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
501	if (!dmi_id)
502		return 0;
503
504	quirks = (unsigned long)dmi_id->driver_data;
505
506	/* uid is left at 0 on errors and 0 is not a valid UART UID */
507	acpi_dev_uid_to_integer(adev, &uid);
508
509	/* For PCI UARTs without an UID */
510	if (!uid && dev_is_pci(controller_parent)) {
511		struct pci_dev *pdev = to_pci_dev(controller_parent);
512
513		/*
514		 * Devfn values for PCI UARTs on Bay Trail SoCs, which are
515		 * the only devices where this fallback is necessary.
516		 */
517		if (pdev->devfn == PCI_DEVFN(0x1e, 3))
518			uid = 1;
519		else if (pdev->devfn == PCI_DEVFN(0x1e, 4))
520			uid = 2;
521	}
522
523	if (!uid)
524		return 0;
525
526	if (!dev_is_platform(controller_parent) && !dev_is_pci(controller_parent)) {
527		/* PNP enumerated UARTs */
528		if ((quirks & ACPI_QUIRK_PNP_UART1_SKIP) && uid == 1)
529			*skip = true;
530
531		return 0;
532	}
533
534	if ((quirks & ACPI_QUIRK_UART1_SKIP) && uid == 1)
535		*skip = true;
536
537	if (quirks & ACPI_QUIRK_UART1_TTY_UART2_SKIP) {
538		if (uid == 1)
539			return -ENODEV; /* Create tty cdev instead of serdev */
540
541		if (uid == 2)
542			*skip = true;
543	}
544
545	return 0;
546}
547
548bool acpi_quirk_skip_gpio_event_handlers(void)
549{
550	const struct dmi_system_id *dmi_id;
551	long quirks;
552
553	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
554	if (!dmi_id)
555		return false;
556
557	quirks = (unsigned long)dmi_id->driver_data;
558	return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
559}
560EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
561#else
562static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
563{
564	return 0;
565}
566#endif
567
568int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
569{
570	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
571
572	*skip = false;
573
574	/*
575	 * The DELL0501 ACPI HID represents an UART (CID is set to PNP0501) with
576	 * a backlight-controller attached. There is no separate ACPI device with
577	 * an UartSerialBusV2() resource to model the backlight-controller.
578	 * Set skip to true so that the tty core creates a serdev ctrl device.
579	 * The backlight driver will manually create the serdev client device.
580	 */
581	if (adev && acpi_dev_hid_match(adev, "DELL0501")) {
582		*skip = true;
583		/*
584		 * Create a platform dev for dell-uart-backlight to bind to.
585		 * This is a static device, so no need to store the result.
586		 */
587		platform_device_register_simple("dell-uart-backlight", PLATFORM_DEVID_NONE,
588						NULL, 0);
589		return 0;
590	}
591
592	return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
593}
594EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
595
596/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
597static const struct {
598	const char *hid;
599	int hrv;
600} acpi_skip_ac_and_battery_pmic_ids[] = {
601	{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
602	{ "INT34D3",  3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
603};
604
605bool acpi_quirk_skip_acpi_ac_and_battery(void)
606{
607	const struct dmi_system_id *dmi_id;
608	long quirks = 0;
609	int i;
610
611	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
612	if (dmi_id)
613		quirks = (unsigned long)dmi_id->driver_data;
614
615	if (quirks & ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY)
616		return true;
617
618	if (quirks & ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY)
619		return false;
620
621	for (i = 0; i < ARRAY_SIZE(acpi_skip_ac_and_battery_pmic_ids); i++) {
622		if (acpi_dev_present(acpi_skip_ac_and_battery_pmic_ids[i].hid, "1",
623				     acpi_skip_ac_and_battery_pmic_ids[i].hrv)) {
624			pr_info_once("found native %s PMIC, skipping ACPI AC and battery devices\n",
625				     acpi_skip_ac_and_battery_pmic_ids[i].hid);
626			return true;
627		}
628	}
629
630	return false;
631}
632EXPORT_SYMBOL_GPL(acpi_quirk_skip_acpi_ac_and_battery);
633
634/* This section provides a workaround for a specific x86 system
635 * which requires disabling of mwait to work correctly.
636 */
637static int __init acpi_proc_quirk_set_no_mwait(const struct dmi_system_id *id)
638{
639	pr_notice("%s detected - disabling mwait for CPU C-states\n",
640		  id->ident);
641	boot_option_idle_override = IDLE_NOMWAIT;
642	return 0;
643}
644
645static const struct dmi_system_id acpi_proc_quirk_mwait_dmi_table[] __initconst = {
646	{
647		.callback = acpi_proc_quirk_set_no_mwait,
648		.ident = "Extensa 5220",
649		.matches =  {
650			DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
651			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
652			DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
653			DMI_MATCH(DMI_BOARD_NAME, "Columbia"),
654		},
655		.driver_data = NULL,
656	},
657	{}
658};
659
660void __init acpi_proc_quirk_mwait_check(void)
661{
662	/*
663	 * Check whether the system is DMI table. If yes, OSPM
664	 * should not use mwait for CPU-states.
665	 */
666	dmi_check_system(acpi_proc_quirk_mwait_dmi_table);
667}