drivers/acpi/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # ACPI Configuration
   4 #
   5
   6 config ARCH_SUPPORTS_ACPI
   7         bool
   8
   9 menuconfig ACPI
  10         bool "ACPI (Advanced Configuration and Power Interface) Support"
  11         depends on ARCH_SUPPORTS_ACPI
  12         depends on PCI
  13         select PNP
  14         default y if X86
  15         help
  16           Advanced Configuration and Power Interface (ACPI) support for
  17           Linux requires an ACPI-compliant platform (hardware/firmware),
  18           and assumes the presence of OS-directed configuration and power
  19           management (OSPM) software.  This option will enlarge your
  20           kernel by about 70K.
  21
  22           Linux ACPI provides a robust functional replacement for several
  23           legacy configuration and power management interfaces, including
  24           the Plug-and-Play BIOS specification (PnP BIOS), the
  25           MultiProcessor Specification (MPS), and the Advanced Power
  26           Management (APM) specification.  If both ACPI and APM support
  27           are configured, ACPI is used.
  28
  29           The project home page for the Linux ACPI subsystem is here:
  30           <https://01.org/linux-acpi>
  31
  32           Linux support for ACPI is based on Intel Corporation's ACPI
  33           Component Architecture (ACPI CA).  For more information on the
  34           ACPI CA, see:
  35           <http://acpica.org/>
  36
  37           ACPI is an open industry specification originally co-developed by
  38           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
  39           it is developed by the ACPI Specification Working Group (ASWG) under
  40           the UEFI Forum and any UEFI member can join the ASWG and contribute
  41           to the ACPI specification.
  42           The specification is available at:
  43           <http://www.acpi.info>
  44           <http://www.uefi.org/acpi/specs>
  45
  46 if ACPI
  47
  48 config ACPI_LEGACY_TABLES_LOOKUP
  49         bool
  50
  51 config ARCH_MIGHT_HAVE_ACPI_PDC
  52         bool
  53
  54 config ACPI_GENERIC_GSI
  55         bool
  56
  57 config ACPI_SYSTEM_POWER_STATES_SUPPORT
  58         bool
  59
  60 config ACPI_CCA_REQUIRED
  61         bool
  62
  63 config ACPI_DEBUGGER
  64         bool "AML debugger interface"
  65         select ACPI_DEBUG
  66         help
  67           Enable in-kernel debugging of AML facilities: statistics,
  68           internal object dump, single step control method execution.
  69           This is still under development, currently enabling this only
  70           results in the compilation of the ACPICA debugger files.
  71
  72 if ACPI_DEBUGGER
  73
  74 config ACPI_DEBUGGER_USER
  75         tristate "Userspace debugger accessiblity"
  76         depends on DEBUG_FS
  77         help
  78           Export /sys/kernel/debug/acpi/acpidbg for userspace utilities
  79           to access the debugger functionalities.
  80
  81 endif
  82
  83 config ACPI_SPCR_TABLE
  84         bool
  85
  86 config ACPI_LPIT
  87         bool
  88         depends on X86_64
  89         default y
  90
  91 config ACPI_SLEEP
  92         bool
  93         depends on SUSPEND || HIBERNATION
  94         depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
  95         default y
  96
  97 config ACPI_PROCFS_POWER
  98         bool "Deprecated power /proc/acpi directories"
  99         depends on X86 && PROC_FS
 100         help
 101           For backwards compatibility, this option allows
 102           deprecated power /proc/acpi/ directories to exist, even when
 103           they have been replaced by functions in /sys.
 104           The deprecated directories (and their replacements) include:
 105           /proc/acpi/battery/* (/sys/class/power_supply/*)
 106           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
 107           This option has no effect on /proc/acpi/ directories
 108           and functions, which do not yet exist in /sys
 109           This option, together with the proc directories, will be
 110           deleted in the future.
 111
 112           Say N to delete power /proc/acpi/ directories that have moved to /sys/
 113
 114 config ACPI_REV_OVERRIDE_POSSIBLE
 115         bool "Allow supported ACPI revision to be overridden"
 116         depends on X86
 117         default y
 118         help
 119           The platform firmware on some systems expects Linux to return "5" as
 120           the supported ACPI revision which makes it expose system configuration
 121           information in a special way.
 122
 123           For example, based on what ACPI exports as the supported revision,
 124           Dell XPS 13 (2015) configures its audio device to either work in HDA
 125           mode or in I2S mode, where the former is supposed to be used on Linux
 126           until the latter is fully supported (in the kernel as well as in user
 127           space).
 128
 129           This option enables a DMI-based quirk for the above Dell machine (so
 130           that HDA audio is exposed by the platform firmware to the kernel) and
 131           makes it possible to force the kernel to return "5" as the supported
 132           ACPI revision via the "acpi_rev_override" command line switch.
 133
 134 config ACPI_EC_DEBUGFS
 135         tristate "EC read/write access through /sys/kernel/debug/ec"
 136         default n
 137         help
 138           Say N to disable Embedded Controller /sys/kernel/debug interface
 139
 140           Be aware that using this interface can confuse your Embedded
 141           Controller in a way that a normal reboot is not enough. You then
 142           have to power off your system, and remove the laptop battery for
 143           some seconds.
 144           An Embedded Controller typically is available on laptops and reads
 145           sensor values like battery state and temperature.
 146           The kernel accesses the EC through ACPI parsed code provided by BIOS
 147           tables. This option allows to access the EC directly without ACPI
 148           code being involved.
 149           Thus this option is a debug option that helps to write ACPI drivers
 150           and can be used to identify ACPI code or EC firmware bugs.
 151
 152 config ACPI_AC
 153         tristate "AC Adapter"
 154         depends on X86
 155         select POWER_SUPPLY
 156         default y
 157         help
 158           This driver supports the AC Adapter object, which indicates
 159           whether a system is on AC or not.  If you have a system that can
 160           switch between A/C and battery, say Y.
 161
 162           To compile this driver as a module, choose M here:
 163           the module will be called ac.
 164
 165 config ACPI_BATTERY
 166         tristate "Battery"
 167         depends on X86
 168         select POWER_SUPPLY
 169         default y
 170         help
 171           This driver adds support for battery information through
 172           /proc/acpi/battery. If you have a mobile system with a battery,
 173           say Y.
 174
 175           To compile this driver as a module, choose M here:
 176           the module will be called battery.
 177
 178 config ACPI_BUTTON
 179         tristate "Button"
 180         depends on INPUT
 181         default y
 182         help
 183           This driver handles events on the power, sleep, and lid buttons.
 184           A daemon reads events from input devices or via netlink and
 185           performs user-defined actions such as shutting down the system.
 186           This is necessary for software-controlled poweroff.
 187
 188           To compile this driver as a module, choose M here:
 189           the module will be called button.
 190
 191 config ACPI_VIDEO
 192         tristate "Video"
 193         depends on X86 && BACKLIGHT_CLASS_DEVICE
 194         depends on INPUT
 195         select THERMAL
 196         help
 197           This driver implements the ACPI Extensions For Display Adapters
 198           for integrated graphics devices on motherboard, as specified in
 199           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 200           such as defining the video POST device, retrieving EDID information,
 201           and setting up a video output.
 202
 203           To compile this driver as a module, choose M here:
 204           the module will be called video.
 205
 206 config ACPI_FAN
 207         tristate "Fan"
 208         depends on THERMAL
 209         default y
 210         help
 211           This driver supports ACPI fan devices, allowing user-mode
 212           applications to perform basic fan control (on, off, status).
 213
 214           To compile this driver as a module, choose M here:
 215           the module will be called fan.
 216
 217 config ACPI_DOCK
 218         bool "Dock"
 219         help
 220           This driver supports ACPI-controlled docking stations and removable
 221           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 222
 223 config ACPI_CPU_FREQ_PSS
 224         bool
 225         select THERMAL
 226
 227 config ACPI_PROCESSOR_CSTATE
 228         def_bool y
 229         depends on IA64 || X86
 230
 231 config ACPI_PROCESSOR_IDLE
 232         bool
 233         select CPU_IDLE
 234
 235 config ACPI_MCFG
 236         bool
 237
 238 config ACPI_CPPC_LIB
 239         bool
 240         depends on ACPI_PROCESSOR
 241         select MAILBOX
 242         select PCC
 243         help
 244           If this option is enabled, this file implements common functionality
 245           to parse CPPC tables as described in the ACPI 5.1+ spec. The
 246           routines implemented are meant to be used by other
 247           drivers to control CPU performance using CPPC semantics.
 248           If your platform does not support CPPC in firmware,
 249           leave this option disabled.
 250
 251 config ACPI_PROCESSOR
 252         tristate "Processor"
 253         depends on X86 || IA64 || ARM64
 254         select ACPI_PROCESSOR_IDLE
 255         select ACPI_CPU_FREQ_PSS if X86 || IA64
 256         default y
 257         help
 258           This driver adds support for the ACPI Processor package. It is required
 259           by several flavors of cpufreq performance-state, thermal, throttling and
 260           idle drivers.
 261
 262           To compile this driver as a module, choose M here:
 263           the module will be called processor.
 264
 265 config ACPI_IPMI
 266         tristate "IPMI"
 267         depends on IPMI_HANDLER
 268         default n
 269         help
 270           This driver enables the ACPI to access the BMC controller. And it
 271           uses the IPMI request/response message to communicate with BMC
 272           controller, which can be found on on the server.
 273
 274           To compile this driver as a module, choose M here:
 275           the module will be called as acpi_ipmi.
 276
 277 config ACPI_HOTPLUG_CPU
 278         bool
 279         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 280         select ACPI_CONTAINER
 281         default y
 282
 283 config ACPI_PROCESSOR_AGGREGATOR
 284         tristate "Processor Aggregator"
 285         depends on ACPI_PROCESSOR
 286         depends on X86
 287         help
 288           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 289           specific processor configuration and control that applies to all
 290           processors in the platform. Currently only logical processor idling
 291           is defined, which is to reduce power consumption. This driver
 292           supports the new device.
 293
 294 config ACPI_THERMAL
 295         tristate "Thermal Zone"
 296         depends on ACPI_PROCESSOR
 297         select THERMAL
 298         default y
 299         help
 300           This driver supports ACPI thermal zones.  Most mobile and
 301           some desktop systems support ACPI thermal zones.  It is HIGHLY
 302           recommended that this option be enabled, as your processor(s)
 303           may be damaged without it.
 304
 305           To compile this driver as a module, choose M here:
 306           the module will be called thermal.
 307
 308 config ACPI_NUMA
 309         bool "NUMA support"
 310         depends on NUMA
 311         depends on (X86 || IA64 || ARM64)
 312         default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
 313
 314 config ACPI_CUSTOM_DSDT_FILE
 315         string "Custom DSDT Table file to include"
 316         default ""
 317         depends on !STANDALONE
 318         help
 319           This option supports a custom DSDT by linking it into the kernel.
 320           See Documentation/acpi/dsdt-override.txt
 321
 322           Enter the full path name to the file which includes the AmlCode
 323           declaration.
 324
 325           If unsure, don't enter a file name.
 326
 327 config ACPI_CUSTOM_DSDT
 328         bool
 329         default ACPI_CUSTOM_DSDT_FILE != ""
 330
 331 config ARCH_HAS_ACPI_TABLE_UPGRADE
 332         def_bool n
 333
 334 config ACPI_TABLE_UPGRADE
 335         bool "Allow upgrading ACPI tables via initrd"
 336         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
 337         default y
 338         help
 339           This option provides functionality to upgrade arbitrary ACPI tables
 340           via initrd. No functional change if no ACPI tables are passed via
 341           initrd, therefore it's safe to say Y.
 342           See Documentation/acpi/initrd_table_override.txt for details
 343
 344 config ACPI_DEBUG
 345         bool "Debug Statements"
 346         default n
 347         help
 348           The ACPI subsystem can produce debug output.  Saying Y enables this
 349           output and increases the kernel size by around 50K.
 350
 351           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 352           parameters documented in Documentation/acpi/debug.txt and
 353           Documentation/admin-guide/kernel-parameters.rst to control the type and
 354           amount of debug output.
 355
 356 config ACPI_PCI_SLOT
 357         bool "PCI slot detection driver"
 358         depends on SYSFS
 359         default n
 360         help
 361           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 362           slots in the system.  This can help correlate PCI bus addresses,
 363           i.e., segment/bus/device/function tuples, with physical slots in
 364           the system.  If you are unsure, say N.
 365
 366 config X86_PM_TIMER
 367         bool "Power Management Timer Support" if EXPERT
 368         depends on X86
 369         default y
 370         help
 371           The Power Management Timer is available on all ACPI-capable,
 372           in most cases even if ACPI is unusable or blacklisted.
 373
 374           This timing source is not affected by power management features
 375           like aggressive processor idling, throttling, frequency and/or
 376           voltage scaling, unlike the commonly used Time Stamp Counter
 377           (TSC) timing source.
 378
 379           You should nearly always say Y here because many modern
 380           systems require this timer.
 381
 382 config ACPI_CONTAINER
 383         bool "Container and Module Devices"
 384         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 385         help
 386           This driver supports ACPI Container and Module devices (IDs
 387           ACPI0004, PNP0A05, and PNP0A06).
 388
 389           This helps support hotplug of nodes, CPUs, and memory.
 390
 391           To compile this driver as a module, choose M here:
 392           the module will be called container.
 393
 394 config ACPI_HOTPLUG_MEMORY
 395         bool "Memory Hotplug"
 396         depends on MEMORY_HOTPLUG
 397         help
 398           This driver supports ACPI memory hotplug.  The driver
 399           fields notifications on ACPI memory devices (PNP0C80),
 400           which represent memory ranges that may be onlined or
 401           offlined during runtime.
 402
 403           If your hardware and firmware do not support adding or
 404           removing memory devices at runtime, you need not enable
 405           this driver.
 406
 407           To compile this driver as a module, choose M here:
 408           the module will be called acpi_memhotplug.
 409
 410 config ACPI_HOTPLUG_IOAPIC
 411         bool
 412         depends on PCI
 413         depends on X86_IO_APIC
 414         default y
 415
 416 config ACPI_SBS
 417         tristate "Smart Battery System"
 418         depends on X86
 419         select POWER_SUPPLY
 420         help
 421           This driver supports the Smart Battery System, another
 422           type of access to battery information, found on some laptops.
 423
 424           To compile this driver as a module, choose M here:
 425           the modules will be called sbs and sbshc.
 426
 427 config ACPI_HED
 428         tristate "Hardware Error Device"
 429         help
 430           This driver supports the Hardware Error Device (PNP0C33),
 431           which is used to report some hardware errors notified via
 432           SCI, mainly the corrected errors.
 433
 434 config ACPI_CUSTOM_METHOD
 435         tristate "Allow ACPI methods to be inserted/replaced at run time"
 436         depends on DEBUG_FS
 437         default n
 438         help
 439           This debug facility allows ACPI AML methods to be inserted and/or
 440           replaced without rebooting the system. For details refer to:
 441           Documentation/acpi/method-customizing.txt.
 442
 443           NOTE: This option is security sensitive, because it allows arbitrary
 444           kernel memory to be written to by root (uid=0) users, allowing them
 445           to bypass certain security measures (e.g. if root is not allowed to
 446           load additional kernel modules after boot, this feature may be used
 447           to override that restriction).
 448
 449 config ACPI_BGRT
 450         bool "Boottime Graphics Resource Table support"
 451         depends on EFI && (X86 || ARM64)
 452         help
 453           This driver adds support for exposing the ACPI Boottime Graphics
 454           Resource Table, which allows the operating system to obtain
 455           data from the firmware boot splash. It will appear under
 456           /sys/firmware/acpi/bgrt/ .
 457
 458 config ACPI_REDUCED_HARDWARE_ONLY
 459         bool "Hardware-reduced ACPI support only" if EXPERT
 460         def_bool n
 461         help
 462           This config item changes the way the ACPI code is built.  When this
 463           option is selected, the kernel will use a specialized version of
 464           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 465           resulting kernel will be smaller but it will also be restricted to
 466           running in ACPI reduced hardware mode ONLY.
 467
 468           If you are unsure what to do, do not enable this option.
 469
 470 source "drivers/acpi/nfit/Kconfig"
 471
 472 source "drivers/acpi/apei/Kconfig"
 473 source "drivers/acpi/dptf/Kconfig"
 474
 475 config ACPI_WATCHDOG
 476         bool
 477
 478 config ACPI_EXTLOG
 479         tristate "Extended Error Log support"
 480         depends on X86_MCE && X86_LOCAL_APIC && EDAC
 481         select UEFI_CPER
 482         default n
 483         help
 484           Certain usages such as Predictive Failure Analysis (PFA) require
 485           more information about the error than what can be described in
 486           processor machine check banks. Most server processors log
 487           additional information about the error in processor uncore
 488           registers. Since the addresses and layout of these registers vary
 489           widely from one processor to another, system software cannot
 490           readily make use of them. To complicate matters further, some of
 491           the additional error information cannot be constructed without
 492           detailed knowledge about platform topology.
 493
 494           Enhanced MCA Logging allows firmware to provide additional error
 495           information to system software, synchronous with MCE or CMCI. This
 496           driver adds support for that functionality with corresponding
 497           tracepoint which carries that information to userspace.
 498
 499 menuconfig PMIC_OPREGION
 500         bool "PMIC (Power Management Integrated Circuit) operation region support"
 501         help
 502           Select this option to enable support for ACPI operation
 503           region of the PMIC chip. The operation region can be used
 504           to control power rails and sensor reading/writing on the
 505           PMIC chip.
 506
 507 if PMIC_OPREGION
 508 config CRC_PMIC_OPREGION
 509         bool "ACPI operation region support for CrystalCove PMIC"
 510         depends on INTEL_SOC_PMIC
 511         help
 512           This config adds ACPI operation region support for CrystalCove PMIC.
 513
 514 config XPOWER_PMIC_OPREGION
 515         bool "ACPI operation region support for XPower AXP288 PMIC"
 516         depends on MFD_AXP20X_I2C
 517         help
 518           This config adds ACPI operation region support for XPower AXP288 PMIC.
 519
 520 config BXT_WC_PMIC_OPREGION
 521         bool "ACPI operation region support for BXT WhiskeyCove PMIC"
 522         depends on INTEL_SOC_PMIC_BXTWC
 523         help
 524           This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
 525
 526 config CHT_WC_PMIC_OPREGION
 527         bool "ACPI operation region support for CHT Whiskey Cove PMIC"
 528         depends on INTEL_SOC_PMIC_CHTWC
 529         help
 530           This config adds ACPI operation region support for CHT Whiskey Cove PMIC.
 531
 532 config CHT_DC_TI_PMIC_OPREGION
 533         bool "ACPI operation region support for Dollar Cove TI PMIC"
 534         depends on INTEL_SOC_PMIC_CHTDC_TI
 535         help
 536           This config adds ACPI operation region support for Dollar Cove TI PMIC.
 537
 538 endif
 539
 540 config ACPI_CONFIGFS
 541         tristate "ACPI configfs support"
 542         select CONFIGFS_FS
 543         help
 544           Select this option to enable support for ACPI configuration from
 545           userspace. The configurable ACPI groups will be visible under
 546           /config/acpi, assuming configfs is mounted under /config.
 547
 548 if ARM64
 549 source "drivers/acpi/arm64/Kconfig"
 550
 551 config ACPI_PPTT
 552         bool
 553 endif
 554
 555 config TPS68470_PMIC_OPREGION
 556         bool "ACPI operation region support for TPS68470 PMIC"
 557         depends on MFD_TPS68470
 558         help
 559           This config adds ACPI operation region support for TI TPS68470 PMIC.
 560           TPS68470 device is an advanced power management unit that powers
 561           a Compact Camera Module (CCM), generates clocks for image sensors,
 562           drives a dual LED for flash and incorporates two LED drivers for
 563           general purpose indicators.
 564           This driver enables ACPI operation region support control voltage
 565           regulators and clocks.
 566
 567           This option is a bool as it provides an ACPI operation
 568           region, which must be available before any of the devices
 569           using this, are probed.
 570
 571 endif   # ACPI