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