drivers/acpi/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # ACPI Configuration
   4 #
   5
   6 menuconfig ACPI
   7         bool "ACPI (Advanced Configuration and Power Interface) Support"
   8         depends on !IA64_HP_SIM
   9         depends on IA64 || X86 || ARM64
  10         depends on PCI
  11         select PNP
  12         default y if (IA64 || X86)
  13         help
  14           Advanced Configuration and Power Interface (ACPI) support for
  15           Linux requires an ACPI-compliant platform (hardware/firmware),
  16           and assumes the presence of OS-directed configuration and power
  17           management (OSPM) software.  This option will enlarge your
  18           kernel by about 70K.
  19
  20           Linux ACPI provides a robust functional replacement for several
  21           legacy configuration and power management interfaces, including
  22           the Plug-and-Play BIOS specification (PnP BIOS), the
  23           MultiProcessor Specification (MPS), and the Advanced Power
  24           Management (APM) specification.  If both ACPI and APM support
  25           are configured, ACPI is used.
  26
  27           The project home page for the Linux ACPI subsystem is here:
  28           <https://01.org/linux-acpi>
  29
  30           Linux support for ACPI is based on Intel Corporation's ACPI
  31           Component Architecture (ACPI CA).  For more information on the
  32           ACPI CA, see:
  33           <http://acpica.org/>
  34
  35           ACPI is an open industry specification originally co-developed by
  36           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
  37           it is developed by the ACPI Specification Working Group (ASWG) under
  38           the UEFI Forum and any UEFI member can join the ASWG and contribute
  39           to the ACPI specification.
  40           The specification is available at:
  41           <http://www.acpi.info>
  42           <http://www.uefi.org/acpi/specs>
  43
  44 if ACPI
  45
  46 config ACPI_LEGACY_TABLES_LOOKUP
  47         bool
  48
  49 config ARCH_MIGHT_HAVE_ACPI_PDC
  50         bool
  51
  52 config ACPI_GENERIC_GSI
  53         bool
  54
  55 config ACPI_SYSTEM_POWER_STATES_SUPPORT
  56         bool
  57
  58 config ACPI_CCA_REQUIRED
  59         bool
  60
  61 config ACPI_DEBUGGER
  62         bool "AML debugger interface"
  63         select ACPI_DEBUG
  64         help
  65           Enable in-kernel debugging of AML facilities: statistics,
  66           internal object dump, single step control method execution.
  67           This is still under development, currently enabling this only
  68           results in the compilation of the ACPICA debugger files.
  69
  70 if ACPI_DEBUGGER
  71
  72 config ACPI_DEBUGGER_USER
  73         tristate "Userspace debugger accessiblity"
  74         depends on DEBUG_FS
  75         help
  76           Export /sys/kernel/debug/acpi/acpidbg for userspace utilities
  77           to access the debugger functionalities.
  78
  79 endif
  80
  81 config ACPI_SPCR_TABLE
  82         bool
  83
  84 config ACPI_LPIT
  85         bool
  86         depends on X86_64
  87         default y
  88
  89 config ACPI_SLEEP
  90         bool
  91         depends on SUSPEND || HIBERNATION
  92         depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
  93         default y
  94
  95 config ACPI_PROCFS_POWER
  96         bool "Deprecated power /proc/acpi directories"
  97         depends on X86 && PROC_FS
  98         help
  99           For backwards compatibility, this option allows
 100           deprecated power /proc/acpi/ directories to exist, even when
 101           they have been replaced by functions in /sys.
 102           The deprecated directories (and their replacements) include:
 103           /proc/acpi/battery/* (/sys/class/power_supply/*)
 104           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
 105           This option has no effect on /proc/acpi/ directories
 106           and functions, which do not yet exist in /sys
 107           This option, together with the proc directories, will be
 108           deleted in the future.
 109
 110           Say N to delete power /proc/acpi/ directories that have moved to /sys/
 111
 112 config ACPI_REV_OVERRIDE_POSSIBLE
 113         bool "Allow supported ACPI revision to be overridden"
 114         depends on X86
 115         default y
 116         help
 117           The platform firmware on some systems expects Linux to return "5" as
 118           the supported ACPI revision which makes it expose system configuration
 119           information in a special way.
 120
 121           For example, based on what ACPI exports as the supported revision,
 122           Dell XPS 13 (2015) configures its audio device to either work in HDA
 123           mode or in I2S mode, where the former is supposed to be used on Linux
 124           until the latter is fully supported (in the kernel as well as in user
 125           space).
 126
 127           This option enables a DMI-based quirk for the above Dell machine (so
 128           that HDA audio is exposed by the platform firmware to the kernel) and
 129           makes it possible to force the kernel to return "5" as the supported
 130           ACPI revision via the "acpi_rev_override" command line switch.
 131
 132 config ACPI_EC_DEBUGFS
 133         tristate "EC read/write access through /sys/kernel/debug/ec"
 134         default n
 135         help
 136           Say N to disable Embedded Controller /sys/kernel/debug interface
 137
 138           Be aware that using this interface can confuse your Embedded
 139           Controller in a way that a normal reboot is not enough. You then
 140           have to power off your system, and remove the laptop battery for
 141           some seconds.
 142           An Embedded Controller typically is available on laptops and reads
 143           sensor values like battery state and temperature.
 144           The kernel accesses the EC through ACPI parsed code provided by BIOS
 145           tables. This option allows to access the EC directly without ACPI
 146           code being involved.
 147           Thus this option is a debug option that helps to write ACPI drivers
 148           and can be used to identify ACPI code or EC firmware bugs.
 149
 150 config ACPI_AC
 151         tristate "AC Adapter"
 152         depends on X86
 153         select POWER_SUPPLY
 154         default y
 155         help
 156           This driver supports the AC Adapter object, which indicates
 157           whether a system is on AC or not.  If you have a system that can
 158           switch between A/C and battery, say Y.
 159
 160           To compile this driver as a module, choose M here:
 161           the module will be called ac.
 162
 163 config ACPI_BATTERY
 164         tristate "Battery"
 165         depends on X86
 166         select POWER_SUPPLY
 167         default y
 168         help
 169           This driver adds support for battery information through
 170           /proc/acpi/battery. If you have a mobile system with a battery,
 171           say Y.
 172
 173           To compile this driver as a module, choose M here:
 174           the module will be called battery.
 175
 176 config ACPI_BUTTON
 177         tristate "Button"
 178         depends on INPUT
 179         default y
 180         help
 181           This driver handles events on the power, sleep, and lid buttons.
 182           A daemon reads events from input devices or via netlink and
 183           performs user-defined actions such as shutting down the system.
 184           This is necessary for software-controlled poweroff.
 185
 186           To compile this driver as a module, choose M here:
 187           the module will be called button.
 188
 189 config ACPI_VIDEO
 190         tristate "Video"
 191         depends on X86 && BACKLIGHT_CLASS_DEVICE
 192         depends on INPUT
 193         select THERMAL
 194         help
 195           This driver implements the ACPI Extensions For Display Adapters
 196           for integrated graphics devices on motherboard, as specified in
 197           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 198           such as defining the video POST device, retrieving EDID information,
 199           and setting up a video output.
 200
 201           To compile this driver as a module, choose M here:
 202           the module will be called video.
 203
 204 config ACPI_FAN
 205         tristate "Fan"
 206         depends on THERMAL
 207         default y
 208         help
 209           This driver supports ACPI fan devices, allowing user-mode
 210           applications to perform basic fan control (on, off, status).
 211
 212           To compile this driver as a module, choose M here:
 213           the module will be called fan.
 214
 215 config ACPI_DOCK
 216         bool "Dock"
 217         help
 218           This driver supports ACPI-controlled docking stations and removable
 219           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 220
 221 config ACPI_CPU_FREQ_PSS
 222         bool
 223         select THERMAL
 224
 225 config ACPI_PROCESSOR_CSTATE
 226         def_bool y
 227         depends on IA64 || X86
 228
 229 config ACPI_PROCESSOR_IDLE
 230         bool
 231         select CPU_IDLE
 232
 233 config ACPI_MCFG
 234         bool
 235
 236 config ACPI_CPPC_LIB
 237         bool
 238         depends on ACPI_PROCESSOR
 239         select MAILBOX
 240         select PCC
 241         help
 242           If this option is enabled, this file implements common functionality
 243           to parse CPPC tables as described in the ACPI 5.1+ spec. The
 244           routines implemented are meant to be used by other
 245           drivers to control CPU performance using CPPC semantics.
 246           If your platform does not support CPPC in firmware,
 247           leave this option disabled.
 248
 249 config ACPI_PROCESSOR
 250         tristate "Processor"
 251         depends on X86 || IA64 || ARM64
 252         select ACPI_PROCESSOR_IDLE
 253         select ACPI_CPU_FREQ_PSS if X86 || IA64
 254         default y
 255         help
 256           This driver adds support for the ACPI Processor package. It is required
 257           by several flavors of cpufreq performance-state, thermal, throttling and
 258           idle drivers.
 259
 260           To compile this driver as a module, choose M here:
 261           the module will be called processor.
 262
 263 config ACPI_IPMI
 264         tristate "IPMI"
 265         depends on IPMI_HANDLER
 266         default n
 267         help
 268           This driver enables the ACPI to access the BMC controller. And it
 269           uses the IPMI request/response message to communicate with BMC
 270           controller, which can be found on on the server.
 271
 272           To compile this driver as a module, choose M here:
 273           the module will be called as acpi_ipmi.
 274
 275 config ACPI_HOTPLUG_CPU
 276         bool
 277         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 278         select ACPI_CONTAINER
 279         default y
 280
 281 config ACPI_PROCESSOR_AGGREGATOR
 282         tristate "Processor Aggregator"
 283         depends on ACPI_PROCESSOR
 284         depends on X86
 285         help
 286           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 287           specific processor configuration and control that applies to all
 288           processors in the platform. Currently only logical processor idling
 289           is defined, which is to reduce power consumption. This driver
 290           supports the new device.
 291
 292 config ACPI_THERMAL
 293         tristate "Thermal Zone"
 294         depends on ACPI_PROCESSOR
 295         select THERMAL
 296         default y
 297         help
 298           This driver supports ACPI thermal zones.  Most mobile and
 299           some desktop systems support ACPI thermal zones.  It is HIGHLY
 300           recommended that this option be enabled, as your processor(s)
 301           may be damaged without it.
 302
 303           To compile this driver as a module, choose M here:
 304           the module will be called thermal.
 305
 306 config ACPI_NUMA
 307         bool "NUMA support"
 308         depends on NUMA
 309         depends on (X86 || IA64 || ARM64)
 310         default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
 311
 312 config ACPI_CUSTOM_DSDT_FILE
 313         string "Custom DSDT Table file to include"
 314         default ""
 315         depends on !STANDALONE
 316         help
 317           This option supports a custom DSDT by linking it into the kernel.
 318           See Documentation/acpi/dsdt-override.txt
 319
 320           Enter the full path name to the file which includes the AmlCode
 321           declaration.
 322
 323           If unsure, don't enter a file name.
 324
 325 config ACPI_CUSTOM_DSDT
 326         bool
 327         default ACPI_CUSTOM_DSDT_FILE != ""
 328
 329 config ARCH_HAS_ACPI_TABLE_UPGRADE
 330         def_bool n
 331
 332 config ACPI_TABLE_UPGRADE
 333         bool "Allow upgrading ACPI tables via initrd"
 334         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
 335         default y
 336         help
 337           This option provides functionality to upgrade arbitrary ACPI tables
 338           via initrd. No functional change if no ACPI tables are passed via
 339           initrd, therefore it's safe to say Y.
 340           See Documentation/acpi/initrd_table_override.txt for details
 341
 342 config ACPI_DEBUG
 343         bool "Debug Statements"
 344         default n
 345         help
 346           The ACPI subsystem can produce debug output.  Saying Y enables this
 347           output and increases the kernel size by around 50K.
 348
 349           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 350           parameters documented in Documentation/acpi/debug.txt and
 351           Documentation/admin-guide/kernel-parameters.rst to control the type and
 352           amount of debug output.
 353
 354 config ACPI_PCI_SLOT
 355         bool "PCI slot detection driver"
 356         depends on SYSFS
 357         default n
 358         help
 359           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 360           slots in the system.  This can help correlate PCI bus addresses,
 361           i.e., segment/bus/device/function tuples, with physical slots in
 362           the system.  If you are unsure, say N.
 363
 364 config X86_PM_TIMER
 365         bool "Power Management Timer Support" if EXPERT
 366         depends on X86
 367         default y
 368         help
 369           The Power Management Timer is available on all ACPI-capable,
 370           in most cases even if ACPI is unusable or blacklisted.
 371
 372           This timing source is not affected by power management features
 373           like aggressive processor idling, throttling, frequency and/or
 374           voltage scaling, unlike the commonly used Time Stamp Counter
 375           (TSC) timing source.
 376
 377           You should nearly always say Y here because many modern
 378           systems require this timer.
 379
 380 config ACPI_CONTAINER
 381         bool "Container and Module Devices"
 382         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 383         help
 384           This driver supports ACPI Container and Module devices (IDs
 385           ACPI0004, PNP0A05, and PNP0A06).
 386
 387           This helps support hotplug of nodes, CPUs, and memory.
 388
 389           To compile this driver as a module, choose M here:
 390           the module will be called container.
 391
 392 config ACPI_HOTPLUG_MEMORY
 393         bool "Memory Hotplug"
 394         depends on MEMORY_HOTPLUG
 395         help
 396           This driver supports ACPI memory hotplug.  The driver
 397           fields notifications on ACPI memory devices (PNP0C80),
 398           which represent memory ranges that may be onlined or
 399           offlined during runtime.
 400
 401           If your hardware and firmware do not support adding or
 402           removing memory devices at runtime, you need not enable
 403           this driver.
 404
 405           To compile this driver as a module, choose M here:
 406           the module will be called acpi_memhotplug.
 407
 408 config ACPI_HOTPLUG_IOAPIC
 409         bool
 410         depends on PCI
 411         depends on X86_IO_APIC
 412         default y
 413
 414 config ACPI_SBS
 415         tristate "Smart Battery System"
 416         depends on X86
 417         select POWER_SUPPLY
 418         help
 419           This driver supports the Smart Battery System, another
 420           type of access to battery information, found on some laptops.
 421
 422           To compile this driver as a module, choose M here:
 423           the modules will be called sbs and sbshc.
 424
 425 config ACPI_HED
 426         tristate "Hardware Error Device"
 427         help
 428           This driver supports the Hardware Error Device (PNP0C33),
 429           which is used to report some hardware errors notified via
 430           SCI, mainly the corrected errors.
 431
 432 config ACPI_CUSTOM_METHOD
 433         tristate "Allow ACPI methods to be inserted/replaced at run time"
 434         depends on DEBUG_FS
 435         default n
 436         help
 437           This debug facility allows ACPI AML methods to be inserted and/or
 438           replaced without rebooting the system. For details refer to:
 439           Documentation/acpi/method-customizing.txt.
 440
 441           NOTE: This option is security sensitive, because it allows arbitrary
 442           kernel memory to be written to by root (uid=0) users, allowing them
 443           to bypass certain security measures (e.g. if root is not allowed to
 444           load additional kernel modules after boot, this feature may be used
 445           to override that restriction).
 446
 447 config ACPI_BGRT
 448         bool "Boottime Graphics Resource Table support"
 449         depends on EFI && (X86 || ARM64)
 450         help
 451           This driver adds support for exposing the ACPI Boottime Graphics
 452           Resource Table, which allows the operating system to obtain
 453           data from the firmware boot splash. It will appear under
 454           /sys/firmware/acpi/bgrt/ .
 455
 456 config ACPI_REDUCED_HARDWARE_ONLY
 457         bool "Hardware-reduced ACPI support only" if EXPERT
 458         def_bool n
 459         help
 460           This config item changes the way the ACPI code is built.  When this
 461           option is selected, the kernel will use a specialized version of
 462           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 463           resulting kernel will be smaller but it will also be restricted to
 464           running in ACPI reduced hardware mode ONLY.
 465
 466           If you are unsure what to do, do not enable this option.
 467
 468 source "drivers/acpi/nfit/Kconfig"
 469
 470 source "drivers/acpi/apei/Kconfig"
 471 source "drivers/acpi/dptf/Kconfig"
 472
 473 config ACPI_WATCHDOG
 474         bool
 475
 476 config ACPI_EXTLOG
 477         tristate "Extended Error Log support"
 478         depends on X86_MCE && X86_LOCAL_APIC && EDAC
 479         select UEFI_CPER
 480         default n
 481         help
 482           Certain usages such as Predictive Failure Analysis (PFA) require
 483           more information about the error than what can be described in
 484           processor machine check banks. Most server processors log
 485           additional information about the error in processor uncore
 486           registers. Since the addresses and layout of these registers vary
 487           widely from one processor to another, system software cannot
 488           readily make use of them. To complicate matters further, some of
 489           the additional error information cannot be constructed without
 490           detailed knowledge about platform topology.
 491
 492           Enhanced MCA Logging allows firmware to provide additional error
 493           information to system software, synchronous with MCE or CMCI. This
 494           driver adds support for that functionality with corresponding
 495           tracepoint which carries that information to userspace.
 496
 497 menuconfig PMIC_OPREGION
 498         bool "PMIC (Power Management Integrated Circuit) operation region support"
 499         help
 500           Select this option to enable support for ACPI operation
 501           region of the PMIC chip. The operation region can be used
 502           to control power rails and sensor reading/writing on the
 503           PMIC chip.
 504
 505 if PMIC_OPREGION
 506 config CRC_PMIC_OPREGION
 507         bool "ACPI operation region support for CrystalCove PMIC"
 508         depends on INTEL_SOC_PMIC
 509         help
 510           This config adds ACPI operation region support for CrystalCove PMIC.
 511
 512 config XPOWER_PMIC_OPREGION
 513         bool "ACPI operation region support for XPower AXP288 PMIC"
 514         depends on MFD_AXP20X_I2C
 515         help
 516           This config adds ACPI operation region support for XPower AXP288 PMIC.
 517
 518 config BXT_WC_PMIC_OPREGION
 519         bool "ACPI operation region support for BXT WhiskeyCove PMIC"
 520         depends on INTEL_SOC_PMIC_BXTWC
 521         help
 522           This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
 523
 524 config CHT_WC_PMIC_OPREGION
 525         bool "ACPI operation region support for CHT Whiskey Cove PMIC"
 526         depends on INTEL_SOC_PMIC_CHTWC
 527         help
 528           This config adds ACPI operation region support for CHT Whiskey Cove PMIC.
 529
 530 config CHT_DC_TI_PMIC_OPREGION
 531         bool "ACPI operation region support for Dollar Cove TI PMIC"
 532         depends on INTEL_SOC_PMIC_CHTDC_TI
 533         help
 534           This config adds ACPI operation region support for Dollar Cove TI PMIC.
 535
 536 endif
 537
 538 config ACPI_CONFIGFS
 539         tristate "ACPI configfs support"
 540         select CONFIGFS_FS
 541         help
 542           Select this option to enable support for ACPI configuration from
 543           userspace. The configurable ACPI groups will be visible under
 544           /config/acpi, assuming configfs is mounted under /config.
 545
 546 if ARM64
 547 source "drivers/acpi/arm64/Kconfig"
 548 endif
 549
 550 config TPS68470_PMIC_OPREGION
 551         bool "ACPI operation region support for TPS68470 PMIC"
 552         depends on MFD_TPS68470
 553         help
 554           This config adds ACPI operation region support for TI TPS68470 PMIC.
 555           TPS68470 device is an advanced power management unit that powers
 556           a Compact Camera Module (CCM), generates clocks for image sensors,
 557           drives a dual LED for flash and incorporates two LED drivers for
 558           general purpose indicators.
 559           This driver enables ACPI operation region support control voltage
 560           regulators and clocks.
 561
 562           This option is a bool as it provides an ACPI operation
 563           region, which must be available before any of the devices
 564           using this, are probed.
 565
 566 endif   # ACPI