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Linux/drivers/acpi/Kconfig

  1 #
  2 # ACPI Configuration
  3 #
  4 
  5 menuconfig ACPI
  6         bool "ACPI (Advanced Configuration and Power Interface) Support"
  7         depends on !IA64_HP_SIM
  8         depends on IA64 || X86 || ARM64
  9         depends on PCI
 10         select PNP
 11         default y if (IA64 || X86)
 12         help
 13           Advanced Configuration and Power Interface (ACPI) support for 
 14           Linux requires an ACPI-compliant platform (hardware/firmware),
 15           and assumes the presence of OS-directed configuration and power
 16           management (OSPM) software.  This option will enlarge your 
 17           kernel by about 70K.
 18 
 19           Linux ACPI provides a robust functional replacement for several 
 20           legacy configuration and power management interfaces, including
 21           the Plug-and-Play BIOS specification (PnP BIOS), the 
 22           MultiProcessor Specification (MPS), and the Advanced Power 
 23           Management (APM) specification.  If both ACPI and APM support 
 24           are configured, ACPI is used.
 25 
 26           The project home page for the Linux ACPI subsystem is here:
 27           <https://01.org/linux-acpi>
 28 
 29           Linux support for ACPI is based on Intel Corporation's ACPI
 30           Component Architecture (ACPI CA).  For more information on the
 31           ACPI CA, see:
 32           <http://acpica.org/>
 33 
 34           ACPI is an open industry specification originally co-developed by
 35           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
 36           it is developed by the ACPI Specification Working Group (ASWG) under
 37           the UEFI Forum and any UEFI member can join the ASWG and contribute
 38           to the ACPI specification.
 39           The specification is available at:
 40           <http://www.acpi.info>
 41           <http://www.uefi.org/acpi/specs>
 42 
 43 if ACPI
 44 
 45 config ACPI_LEGACY_TABLES_LOOKUP
 46         bool
 47 
 48 config ARCH_MIGHT_HAVE_ACPI_PDC
 49         bool
 50 
 51 config ACPI_GENERIC_GSI
 52         bool
 53 
 54 config ACPI_SYSTEM_POWER_STATES_SUPPORT
 55         bool
 56 
 57 config ACPI_CCA_REQUIRED
 58         bool
 59 
 60 config ACPI_DEBUGGER
 61         bool "AML debugger interface"
 62         select ACPI_DEBUG
 63         help
 64           Enable in-kernel debugging of AML facilities: statistics,
 65           internal object dump, single step control method execution.
 66           This is still under development, currently enabling this only
 67           results in the compilation of the ACPICA debugger files.
 68 
 69 if ACPI_DEBUGGER
 70 
 71 config ACPI_DEBUGGER_USER
 72         tristate "Userspace debugger accessiblity"
 73         depends on DEBUG_FS
 74         help
 75           Export /sys/kernel/debug/acpi/acpidbg for userspace utilities
 76           to access the debugger functionalities.
 77 
 78 endif
 79 
 80 config ACPI_SLEEP
 81         bool
 82         depends on SUSPEND || HIBERNATION
 83         depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
 84         default y
 85 
 86 config ACPI_PROCFS_POWER
 87         bool "Deprecated power /proc/acpi directories"
 88         depends on X86 && PROC_FS
 89         help
 90           For backwards compatibility, this option allows
 91           deprecated power /proc/acpi/ directories to exist, even when
 92           they have been replaced by functions in /sys.
 93           The deprecated directories (and their replacements) include:
 94           /proc/acpi/battery/* (/sys/class/power_supply/*)
 95           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
 96           This option has no effect on /proc/acpi/ directories
 97           and functions, which do not yet exist in /sys
 98           This option, together with the proc directories, will be
 99           deleted in the future.
100 
101           Say N to delete power /proc/acpi/ directories that have moved to /sys/
102 
103 config ACPI_REV_OVERRIDE_POSSIBLE
104         bool "Allow supported ACPI revision to be overriden"
105         depends on X86
106         default y
107         help
108           The platform firmware on some systems expects Linux to return "5" as
109           the supported ACPI revision which makes it expose system configuration
110           information in a special way.
111 
112           For example, based on what ACPI exports as the supported revision,
113           Dell XPS 13 (2015) configures its audio device to either work in HDA
114           mode or in I2S mode, where the former is supposed to be used on Linux
115           until the latter is fully supported (in the kernel as well as in user
116           space).
117 
118           This option enables a DMI-based quirk for the above Dell machine (so
119           that HDA audio is exposed by the platform firmware to the kernel) and
120           makes it possible to force the kernel to return "5" as the supported
121           ACPI revision via the "acpi_rev_override" command line switch.
122 
123 config ACPI_EC_DEBUGFS
124         tristate "EC read/write access through /sys/kernel/debug/ec"
125         default n
126         help
127           Say N to disable Embedded Controller /sys/kernel/debug interface
128 
129           Be aware that using this interface can confuse your Embedded
130           Controller in a way that a normal reboot is not enough. You then
131           have to power off your system, and remove the laptop battery for
132           some seconds.
133           An Embedded Controller typically is available on laptops and reads
134           sensor values like battery state and temperature.
135           The kernel accesses the EC through ACPI parsed code provided by BIOS
136           tables. This option allows to access the EC directly without ACPI
137           code being involved.
138           Thus this option is a debug option that helps to write ACPI drivers
139           and can be used to identify ACPI code or EC firmware bugs.
140 
141 config ACPI_AC
142         tristate "AC Adapter"
143         depends on X86
144         select POWER_SUPPLY
145         default y
146         help
147           This driver supports the AC Adapter object, which indicates
148           whether a system is on AC or not.  If you have a system that can
149           switch between A/C and battery, say Y.
150 
151           To compile this driver as a module, choose M here:
152           the module will be called ac.
153 
154 config ACPI_BATTERY
155         tristate "Battery"
156         depends on X86
157         select POWER_SUPPLY
158         default y
159         help
160           This driver adds support for battery information through
161           /proc/acpi/battery. If you have a mobile system with a battery, 
162           say Y.
163 
164           To compile this driver as a module, choose M here:
165           the module will be called battery.
166 
167 config ACPI_BUTTON
168         tristate "Button"
169         depends on INPUT
170         default y
171         help
172           This driver handles events on the power, sleep, and lid buttons.
173           A daemon reads events from input devices or via netlink and
174           performs user-defined actions such as shutting down the system.
175           This is necessary for software-controlled poweroff.
176 
177           To compile this driver as a module, choose M here:
178           the module will be called button.
179 
180 config ACPI_VIDEO
181         tristate "Video"
182         depends on X86 && BACKLIGHT_CLASS_DEVICE
183         depends on INPUT
184         select THERMAL
185         help
186           This driver implements the ACPI Extensions For Display Adapters
187           for integrated graphics devices on motherboard, as specified in
188           ACPI 2.0 Specification, Appendix B.  This supports basic operations
189           such as defining the video POST device, retrieving EDID information,
190           and setting up a video output.
191 
192           To compile this driver as a module, choose M here:
193           the module will be called video.
194 
195 config ACPI_FAN
196         tristate "Fan"
197         depends on THERMAL
198         default y
199         help
200           This driver supports ACPI fan devices, allowing user-mode
201           applications to perform basic fan control (on, off, status).
202 
203           To compile this driver as a module, choose M here:
204           the module will be called fan.
205 
206 config ACPI_DOCK
207         bool "Dock"
208         help
209           This driver supports ACPI-controlled docking stations and removable
210           drive bays such as the IBM Ultrabay and the Dell Module Bay.
211 
212 config ACPI_CPU_FREQ_PSS
213         bool
214         select THERMAL
215 
216 config ACPI_PROCESSOR_CSTATE
217         def_bool y
218         depends on IA64 || X86
219 
220 config ACPI_PROCESSOR_IDLE
221         bool
222         select CPU_IDLE
223 
224 config ACPI_MCFG
225         bool
226 
227 config ACPI_CPPC_LIB
228         bool
229         depends on ACPI_PROCESSOR
230         depends on !ACPI_CPU_FREQ_PSS
231         select MAILBOX
232         select PCC
233         help
234           If this option is enabled, this file implements common functionality
235           to parse CPPC tables as described in the ACPI 5.1+ spec. The
236           routines implemented are meant to be used by other
237           drivers to control CPU performance using CPPC semantics.
238           If your platform does not support CPPC in firmware,
239           leave this option disabled.
240 
241 config ACPI_PROCESSOR
242         tristate "Processor"
243         depends on X86 || IA64 || ARM64
244         select ACPI_PROCESSOR_IDLE
245         select ACPI_CPU_FREQ_PSS if X86 || IA64
246         default y
247         help
248           This driver adds support for the ACPI Processor package. It is required
249           by several flavors of cpufreq performance-state, thermal, throttling and
250           idle drivers.
251 
252           To compile this driver as a module, choose M here:
253           the module will be called processor.
254 
255 config ACPI_IPMI
256         tristate "IPMI"
257         depends on IPMI_SI
258         default n
259         help
260           This driver enables the ACPI to access the BMC controller. And it
261           uses the IPMI request/response message to communicate with BMC
262           controller, which can be found on on the server.
263 
264           To compile this driver as a module, choose M here:
265           the module will be called as acpi_ipmi.
266 
267 config ACPI_HOTPLUG_CPU
268         bool
269         depends on ACPI_PROCESSOR && HOTPLUG_CPU
270         select ACPI_CONTAINER
271         default y
272 
273 config ACPI_PROCESSOR_AGGREGATOR
274         tristate "Processor Aggregator"
275         depends on ACPI_PROCESSOR
276         depends on X86
277         help
278           ACPI 4.0 defines processor Aggregator, which enables OS to perform
279           specific processor configuration and control that applies to all
280           processors in the platform. Currently only logical processor idling
281           is defined, which is to reduce power consumption. This driver
282           supports the new device.
283 
284 config ACPI_THERMAL
285         tristate "Thermal Zone"
286         depends on ACPI_PROCESSOR
287         select THERMAL
288         default y
289         help
290           This driver supports ACPI thermal zones.  Most mobile and
291           some desktop systems support ACPI thermal zones.  It is HIGHLY
292           recommended that this option be enabled, as your processor(s)
293           may be damaged without it.
294 
295           To compile this driver as a module, choose M here:
296           the module will be called thermal.
297 
298 config ACPI_NUMA
299         bool "NUMA support"
300         depends on NUMA
301         depends on (X86 || IA64 || ARM64)
302         default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
303 
304 config ACPI_CUSTOM_DSDT_FILE
305         string "Custom DSDT Table file to include"
306         default ""
307         depends on !STANDALONE
308         help
309           This option supports a custom DSDT by linking it into the kernel.
310           See Documentation/acpi/dsdt-override.txt
311 
312           Enter the full path name to the file which includes the AmlCode
313           declaration.
314 
315           If unsure, don't enter a file name.
316 
317 config ACPI_CUSTOM_DSDT
318         bool
319         default ACPI_CUSTOM_DSDT_FILE != ""
320 
321 config ARCH_HAS_ACPI_TABLE_UPGRADE
322         def_bool n
323 
324 config ACPI_TABLE_UPGRADE
325         bool "Allow upgrading ACPI tables via initrd"
326         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
327         default y
328         help
329           This option provides functionality to upgrade arbitrary ACPI tables
330           via initrd. No functional change if no ACPI tables are passed via
331           initrd, therefore it's safe to say Y.
332           See Documentation/acpi/initrd_table_override.txt for details
333 
334 config ACPI_DEBUG
335         bool "Debug Statements"
336         default n
337         help
338           The ACPI subsystem can produce debug output.  Saying Y enables this
339           output and increases the kernel size by around 50K.
340 
341           Use the acpi.debug_layer and acpi.debug_level kernel command-line
342           parameters documented in Documentation/acpi/debug.txt and
343           Documentation/kernel-parameters.txt to control the type and
344           amount of debug output.
345 
346 config ACPI_PCI_SLOT
347         bool "PCI slot detection driver"
348         depends on SYSFS
349         default n
350         help
351           This driver creates entries in /sys/bus/pci/slots/ for all PCI
352           slots in the system.  This can help correlate PCI bus addresses,
353           i.e., segment/bus/device/function tuples, with physical slots in
354           the system.  If you are unsure, say N.
355 
356 config X86_PM_TIMER
357         bool "Power Management Timer Support" if EXPERT
358         depends on X86
359         default y
360         help
361           The Power Management Timer is available on all ACPI-capable,
362           in most cases even if ACPI is unusable or blacklisted.
363 
364           This timing source is not affected by power management features
365           like aggressive processor idling, throttling, frequency and/or
366           voltage scaling, unlike the commonly used Time Stamp Counter
367           (TSC) timing source.
368 
369           You should nearly always say Y here because many modern
370           systems require this timer. 
371 
372 config ACPI_CONTAINER
373         bool "Container and Module Devices"
374         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
375         help
376           This driver supports ACPI Container and Module devices (IDs
377           ACPI0004, PNP0A05, and PNP0A06).
378 
379           This helps support hotplug of nodes, CPUs, and memory.
380 
381           To compile this driver as a module, choose M here:
382           the module will be called container.
383 
384 config ACPI_HOTPLUG_MEMORY
385         bool "Memory Hotplug"
386         depends on MEMORY_HOTPLUG
387         help
388           This driver supports ACPI memory hotplug.  The driver
389           fields notifications on ACPI memory devices (PNP0C80),
390           which represent memory ranges that may be onlined or
391           offlined during runtime.
392 
393           If your hardware and firmware do not support adding or
394           removing memory devices at runtime, you need not enable
395           this driver.
396 
397           To compile this driver as a module, choose M here:
398           the module will be called acpi_memhotplug.
399 
400 config ACPI_HOTPLUG_IOAPIC
401         bool
402         depends on PCI
403         depends on X86_IO_APIC
404         default y
405 
406 config ACPI_SBS
407         tristate "Smart Battery System"
408         depends on X86
409         select POWER_SUPPLY
410         help
411           This driver supports the Smart Battery System, another
412           type of access to battery information, found on some laptops.
413 
414           To compile this driver as a module, choose M here:
415           the modules will be called sbs and sbshc.
416 
417 config ACPI_HED
418         tristate "Hardware Error Device"
419         help
420           This driver supports the Hardware Error Device (PNP0C33),
421           which is used to report some hardware errors notified via
422           SCI, mainly the corrected errors.
423 
424 config ACPI_CUSTOM_METHOD
425         tristate "Allow ACPI methods to be inserted/replaced at run time"
426         depends on DEBUG_FS
427         default n
428         help
429           This debug facility allows ACPI AML methods to be inserted and/or
430           replaced without rebooting the system. For details refer to:
431           Documentation/acpi/method-customizing.txt.
432 
433           NOTE: This option is security sensitive, because it allows arbitrary
434           kernel memory to be written to by root (uid=0) users, allowing them
435           to bypass certain security measures (e.g. if root is not allowed to
436           load additional kernel modules after boot, this feature may be used
437           to override that restriction).
438 
439 config ACPI_BGRT
440         bool "Boottime Graphics Resource Table support"
441         depends on EFI && X86
442         help
443           This driver adds support for exposing the ACPI Boottime Graphics
444           Resource Table, which allows the operating system to obtain
445           data from the firmware boot splash. It will appear under
446           /sys/firmware/acpi/bgrt/ .
447 
448 config ACPI_REDUCED_HARDWARE_ONLY
449         bool "Hardware-reduced ACPI support only" if EXPERT
450         def_bool n
451         help
452           This config item changes the way the ACPI code is built.  When this
453           option is selected, the kernel will use a specialized version of
454           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
455           resulting kernel will be smaller but it will also be restricted to
456           running in ACPI reduced hardware mode ONLY.
457 
458           If you are unsure what to do, do not enable this option.
459 
460 source "drivers/acpi/nfit/Kconfig"
461 
462 source "drivers/acpi/apei/Kconfig"
463 source "drivers/acpi/dptf/Kconfig"
464 
465 config ACPI_EXTLOG
466         tristate "Extended Error Log support"
467         depends on X86_MCE && X86_LOCAL_APIC
468         select UEFI_CPER
469         select RAS
470         default n
471         help
472           Certain usages such as Predictive Failure Analysis (PFA) require
473           more information about the error than what can be described in
474           processor machine check banks. Most server processors log
475           additional information about the error in processor uncore
476           registers. Since the addresses and layout of these registers vary
477           widely from one processor to another, system software cannot
478           readily make use of them. To complicate matters further, some of
479           the additional error information cannot be constructed without
480           detailed knowledge about platform topology.
481 
482           Enhanced MCA Logging allows firmware to provide additional error
483           information to system software, synchronous with MCE or CMCI. This
484           driver adds support for that functionality with corresponding
485           tracepoint which carries that information to userspace.
486 
487 menuconfig PMIC_OPREGION
488         bool "PMIC (Power Management Integrated Circuit) operation region support"
489         help
490           Select this option to enable support for ACPI operation
491           region of the PMIC chip. The operation region can be used
492           to control power rails and sensor reading/writing on the
493           PMIC chip.
494 
495 if PMIC_OPREGION
496 config CRC_PMIC_OPREGION
497         bool "ACPI operation region support for CrystalCove PMIC"
498         depends on INTEL_SOC_PMIC
499         help
500           This config adds ACPI operation region support for CrystalCove PMIC.
501 
502 config XPOWER_PMIC_OPREGION
503         bool "ACPI operation region support for XPower AXP288 PMIC"
504         depends on AXP288_ADC = y
505         help
506           This config adds ACPI operation region support for XPower AXP288 PMIC.
507 
508 config BXT_WC_PMIC_OPREGION
509         bool "ACPI operation region support for BXT WhiskeyCove PMIC"
510         depends on INTEL_SOC_PMIC
511         help
512           This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
513 
514 endif
515 
516 config ACPI_CONFIGFS
517         tristate "ACPI configfs support"
518         select CONFIGFS_FS
519         help
520           Select this option to enable support for ACPI configuration from
521           userspace. The configurable ACPI groups will be visible under
522           /config/acpi, assuming configfs is mounted under /config.
523 
524 endif   # ACPI

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