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_SPCR_TABLE
  81         bool
  82
  83 config ACPI_SLEEP
  84         bool
  85         depends on SUSPEND || HIBERNATION
  86         depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
  87         default y
  88
  89 config ACPI_PROCFS_POWER
  90         bool "Deprecated power /proc/acpi directories"
  91         depends on X86 && PROC_FS
  92         help
  93           For backwards compatibility, this option allows
  94           deprecated power /proc/acpi/ directories to exist, even when
  95           they have been replaced by functions in /sys.
  96           The deprecated directories (and their replacements) include:
  97           /proc/acpi/battery/* (/sys/class/power_supply/*)
  98           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  99           This option has no effect on /proc/acpi/ directories
 100           and functions, which do not yet exist in /sys
 101           This option, together with the proc directories, will be
 102           deleted in the future.
 103
 104           Say N to delete power /proc/acpi/ directories that have moved to /sys/
 105
 106 config ACPI_REV_OVERRIDE_POSSIBLE
 107         bool "Allow supported ACPI revision to be overridden"
 108         depends on X86
 109         default y
 110         help
 111           The platform firmware on some systems expects Linux to return "5" as
 112           the supported ACPI revision which makes it expose system configuration
 113           information in a special way.
 114
 115           For example, based on what ACPI exports as the supported revision,
 116           Dell XPS 13 (2015) configures its audio device to either work in HDA
 117           mode or in I2S mode, where the former is supposed to be used on Linux
 118           until the latter is fully supported (in the kernel as well as in user
 119           space).
 120
 121           This option enables a DMI-based quirk for the above Dell machine (so
 122           that HDA audio is exposed by the platform firmware to the kernel) and
 123           makes it possible to force the kernel to return "5" as the supported
 124           ACPI revision via the "acpi_rev_override" command line switch.
 125
 126 config ACPI_EC_DEBUGFS
 127         tristate "EC read/write access through /sys/kernel/debug/ec"
 128         default n
 129         help
 130           Say N to disable Embedded Controller /sys/kernel/debug interface
 131
 132           Be aware that using this interface can confuse your Embedded
 133           Controller in a way that a normal reboot is not enough. You then
 134           have to power off your system, and remove the laptop battery for
 135           some seconds.
 136           An Embedded Controller typically is available on laptops and reads
 137           sensor values like battery state and temperature.
 138           The kernel accesses the EC through ACPI parsed code provided by BIOS
 139           tables. This option allows to access the EC directly without ACPI
 140           code being involved.
 141           Thus this option is a debug option that helps to write ACPI drivers
 142           and can be used to identify ACPI code or EC firmware bugs.
 143
 144 config ACPI_AC
 145         tristate "AC Adapter"
 146         depends on X86
 147         select POWER_SUPPLY
 148         default y
 149         help
 150           This driver supports the AC Adapter object, which indicates
 151           whether a system is on AC or not.  If you have a system that can
 152           switch between A/C and battery, say Y.
 153
 154           To compile this driver as a module, choose M here:
 155           the module will be called ac.
 156
 157 config ACPI_BATTERY
 158         tristate "Battery"
 159         depends on X86
 160         select POWER_SUPPLY
 161         default y
 162         help
 163           This driver adds support for battery information through
 164           /proc/acpi/battery. If you have a mobile system with a battery,
 165           say Y.
 166
 167           To compile this driver as a module, choose M here:
 168           the module will be called battery.
 169
 170 config ACPI_BUTTON
 171         tristate "Button"
 172         depends on INPUT
 173         default y
 174         help
 175           This driver handles events on the power, sleep, and lid buttons.
 176           A daemon reads events from input devices or via netlink and
 177           performs user-defined actions such as shutting down the system.
 178           This is necessary for software-controlled poweroff.
 179
 180           To compile this driver as a module, choose M here:
 181           the module will be called button.
 182
 183 config ACPI_VIDEO
 184         tristate "Video"
 185         depends on X86 && BACKLIGHT_CLASS_DEVICE
 186         depends on INPUT
 187         select THERMAL
 188         help
 189           This driver implements the ACPI Extensions For Display Adapters
 190           for integrated graphics devices on motherboard, as specified in
 191           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 192           such as defining the video POST device, retrieving EDID information,
 193           and setting up a video output.
 194
 195           To compile this driver as a module, choose M here:
 196           the module will be called video.
 197
 198 config ACPI_FAN
 199         tristate "Fan"
 200         depends on THERMAL
 201         default y
 202         help
 203           This driver supports ACPI fan devices, allowing user-mode
 204           applications to perform basic fan control (on, off, status).
 205
 206           To compile this driver as a module, choose M here:
 207           the module will be called fan.
 208
 209 config ACPI_DOCK
 210         bool "Dock"
 211         help
 212           This driver supports ACPI-controlled docking stations and removable
 213           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 214
 215 config ACPI_CPU_FREQ_PSS
 216         bool
 217         select THERMAL
 218
 219 config ACPI_PROCESSOR_CSTATE
 220         def_bool y
 221         depends on IA64 || X86
 222
 223 config ACPI_PROCESSOR_IDLE
 224         bool
 225         select CPU_IDLE
 226
 227 config ACPI_MCFG
 228         bool
 229
 230 config ACPI_CPPC_LIB
 231         bool
 232         depends on ACPI_PROCESSOR
 233         select MAILBOX
 234         select PCC
 235         help
 236           If this option is enabled, this file implements common functionality
 237           to parse CPPC tables as described in the ACPI 5.1+ spec. The
 238           routines implemented are meant to be used by other
 239           drivers to control CPU performance using CPPC semantics.
 240           If your platform does not support CPPC in firmware,
 241           leave this option disabled.
 242
 243 config ACPI_PROCESSOR
 244         tristate "Processor"
 245         depends on X86 || IA64 || ARM64
 246         select ACPI_PROCESSOR_IDLE
 247         select ACPI_CPU_FREQ_PSS if X86 || IA64
 248         default y
 249         help
 250           This driver adds support for the ACPI Processor package. It is required
 251           by several flavors of cpufreq performance-state, thermal, throttling and
 252           idle drivers.
 253
 254           To compile this driver as a module, choose M here:
 255           the module will be called processor.
 256
 257 config ACPI_IPMI
 258         tristate "IPMI"
 259         depends on IPMI_SI
 260         default n
 261         help
 262           This driver enables the ACPI to access the BMC controller. And it
 263           uses the IPMI request/response message to communicate with BMC
 264           controller, which can be found on on the server.
 265
 266           To compile this driver as a module, choose M here:
 267           the module will be called as acpi_ipmi.
 268
 269 config ACPI_HOTPLUG_CPU
 270         bool
 271         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 272         select ACPI_CONTAINER
 273         default y
 274
 275 config ACPI_PROCESSOR_AGGREGATOR
 276         tristate "Processor Aggregator"
 277         depends on ACPI_PROCESSOR
 278         depends on X86
 279         help
 280           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 281           specific processor configuration and control that applies to all
 282           processors in the platform. Currently only logical processor idling
 283           is defined, which is to reduce power consumption. This driver
 284           supports the new device.
 285
 286 config ACPI_THERMAL
 287         tristate "Thermal Zone"
 288         depends on ACPI_PROCESSOR
 289         select THERMAL
 290         default y
 291         help
 292           This driver supports ACPI thermal zones.  Most mobile and
 293           some desktop systems support ACPI thermal zones.  It is HIGHLY
 294           recommended that this option be enabled, as your processor(s)
 295           may be damaged without it.
 296
 297           To compile this driver as a module, choose M here:
 298           the module will be called thermal.
 299
 300 config ACPI_NUMA
 301         bool "NUMA support"
 302         depends on NUMA
 303         depends on (X86 || IA64 || ARM64)
 304         default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
 305
 306 config ACPI_CUSTOM_DSDT_FILE
 307         string "Custom DSDT Table file to include"
 308         default ""
 309         depends on !STANDALONE
 310         help
 311           This option supports a custom DSDT by linking it into the kernel.
 312           See Documentation/acpi/dsdt-override.txt
 313
 314           Enter the full path name to the file which includes the AmlCode
 315           declaration.
 316
 317           If unsure, don't enter a file name.
 318
 319 config ACPI_CUSTOM_DSDT
 320         bool
 321         default ACPI_CUSTOM_DSDT_FILE != ""
 322
 323 config ARCH_HAS_ACPI_TABLE_UPGRADE
 324         def_bool n
 325
 326 config ACPI_TABLE_UPGRADE
 327         bool "Allow upgrading ACPI tables via initrd"
 328         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
 329         default y
 330         help
 331           This option provides functionality to upgrade arbitrary ACPI tables
 332           via initrd. No functional change if no ACPI tables are passed via
 333           initrd, therefore it's safe to say Y.
 334           See Documentation/acpi/initrd_table_override.txt for details
 335
 336 config ACPI_DEBUG
 337         bool "Debug Statements"
 338         default n
 339         help
 340           The ACPI subsystem can produce debug output.  Saying Y enables this
 341           output and increases the kernel size by around 50K.
 342
 343           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 344           parameters documented in Documentation/acpi/debug.txt and
 345           Documentation/admin-guide/kernel-parameters.rst to control the type and
 346           amount of debug output.
 347
 348 config ACPI_PCI_SLOT
 349         bool "PCI slot detection driver"
 350         depends on SYSFS
 351         default n
 352         help
 353           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 354           slots in the system.  This can help correlate PCI bus addresses,
 355           i.e., segment/bus/device/function tuples, with physical slots in
 356           the system.  If you are unsure, say N.
 357
 358 config X86_PM_TIMER
 359         bool "Power Management Timer Support" if EXPERT
 360         depends on X86
 361         default y
 362         help
 363           The Power Management Timer is available on all ACPI-capable,
 364           in most cases even if ACPI is unusable or blacklisted.
 365
 366           This timing source is not affected by power management features
 367           like aggressive processor idling, throttling, frequency and/or
 368           voltage scaling, unlike the commonly used Time Stamp Counter
 369           (TSC) timing source.
 370
 371           You should nearly always say Y here because many modern
 372           systems require this timer.
 373
 374 config ACPI_CONTAINER
 375         bool "Container and Module Devices"
 376         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 377         help
 378           This driver supports ACPI Container and Module devices (IDs
 379           ACPI0004, PNP0A05, and PNP0A06).
 380
 381           This helps support hotplug of nodes, CPUs, and memory.
 382
 383           To compile this driver as a module, choose M here:
 384           the module will be called container.
 385
 386 config ACPI_HOTPLUG_MEMORY
 387         bool "Memory Hotplug"
 388         depends on MEMORY_HOTPLUG
 389         help
 390           This driver supports ACPI memory hotplug.  The driver
 391           fields notifications on ACPI memory devices (PNP0C80),
 392           which represent memory ranges that may be onlined or
 393           offlined during runtime.
 394
 395           If your hardware and firmware do not support adding or
 396           removing memory devices at runtime, you need not enable
 397           this driver.
 398
 399           To compile this driver as a module, choose M here:
 400           the module will be called acpi_memhotplug.
 401
 402 config ACPI_HOTPLUG_IOAPIC
 403         bool
 404         depends on PCI
 405         depends on X86_IO_APIC
 406         default y
 407
 408 config ACPI_SBS
 409         tristate "Smart Battery System"
 410         depends on X86
 411         select POWER_SUPPLY
 412         help
 413           This driver supports the Smart Battery System, another
 414           type of access to battery information, found on some laptops.
 415
 416           To compile this driver as a module, choose M here:
 417           the modules will be called sbs and sbshc.
 418
 419 config ACPI_HED
 420         tristate "Hardware Error Device"
 421         help
 422           This driver supports the Hardware Error Device (PNP0C33),
 423           which is used to report some hardware errors notified via
 424           SCI, mainly the corrected errors.
 425
 426 config ACPI_CUSTOM_METHOD
 427         tristate "Allow ACPI methods to be inserted/replaced at run time"
 428         depends on DEBUG_FS
 429         default n
 430         help
 431           This debug facility allows ACPI AML methods to be inserted and/or
 432           replaced without rebooting the system. For details refer to:
 433           Documentation/acpi/method-customizing.txt.
 434
 435           NOTE: This option is security sensitive, because it allows arbitrary
 436           kernel memory to be written to by root (uid=0) users, allowing them
 437           to bypass certain security measures (e.g. if root is not allowed to
 438           load additional kernel modules after boot, this feature may be used
 439           to override that restriction).
 440
 441 config ACPI_BGRT
 442         bool "Boottime Graphics Resource Table support"
 443         depends on EFI && X86
 444         help
 445           This driver adds support for exposing the ACPI Boottime Graphics
 446           Resource Table, which allows the operating system to obtain
 447           data from the firmware boot splash. It will appear under
 448           /sys/firmware/acpi/bgrt/ .
 449
 450 config ACPI_REDUCED_HARDWARE_ONLY
 451         bool "Hardware-reduced ACPI support only" if EXPERT
 452         def_bool n
 453         help
 454           This config item changes the way the ACPI code is built.  When this
 455           option is selected, the kernel will use a specialized version of
 456           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 457           resulting kernel will be smaller but it will also be restricted to
 458           running in ACPI reduced hardware mode ONLY.
 459
 460           If you are unsure what to do, do not enable this option.
 461
 462 source "drivers/acpi/nfit/Kconfig"
 463
 464 source "drivers/acpi/apei/Kconfig"
 465 source "drivers/acpi/dptf/Kconfig"
 466
 467 config ACPI_WATCHDOG
 468         bool
 469
 470 config ACPI_EXTLOG
 471         tristate "Extended Error Log support"
 472         depends on X86_MCE && X86_LOCAL_APIC
 473         select UEFI_CPER
 474         select RAS
 475         default n
 476         help
 477           Certain usages such as Predictive Failure Analysis (PFA) require
 478           more information about the error than what can be described in
 479           processor machine check banks. Most server processors log
 480           additional information about the error in processor uncore
 481           registers. Since the addresses and layout of these registers vary
 482           widely from one processor to another, system software cannot
 483           readily make use of them. To complicate matters further, some of
 484           the additional error information cannot be constructed without
 485           detailed knowledge about platform topology.
 486
 487           Enhanced MCA Logging allows firmware to provide additional error
 488           information to system software, synchronous with MCE or CMCI. This
 489           driver adds support for that functionality with corresponding
 490           tracepoint which carries that information to userspace.
 491
 492 menuconfig PMIC_OPREGION
 493         bool "PMIC (Power Management Integrated Circuit) operation region support"
 494         help
 495           Select this option to enable support for ACPI operation
 496           region of the PMIC chip. The operation region can be used
 497           to control power rails and sensor reading/writing on the
 498           PMIC chip.
 499
 500 if PMIC_OPREGION
 501 config CRC_PMIC_OPREGION
 502         bool "ACPI operation region support for CrystalCove PMIC"
 503         depends on INTEL_SOC_PMIC
 504         help
 505           This config adds ACPI operation region support for CrystalCove PMIC.
 506
 507 config XPOWER_PMIC_OPREGION
 508         bool "ACPI operation region support for XPower AXP288 PMIC"
 509         depends on AXP288_ADC = y
 510         help
 511           This config adds ACPI operation region support for XPower AXP288 PMIC.
 512
 513 config BXT_WC_PMIC_OPREGION
 514         bool "ACPI operation region support for BXT WhiskeyCove PMIC"
 515         depends on INTEL_SOC_PMIC
 516         help
 517           This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
 518
 519 endif
 520
 521 config ACPI_CONFIGFS
 522         tristate "ACPI configfs support"
 523         select CONFIGFS_FS
 524         help
 525           Select this option to enable support for ACPI configuration from
 526           userspace. The configurable ACPI groups will be visible under
 527           /config/acpi, assuming configfs is mounted under /config.
 528
 529 if ARM64
 530 source "drivers/acpi/arm64/Kconfig"
 531 endif
 532
 533 endif   # ACPI