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         select MAILBOX
 231         select PCC
 232         help
 233           If this option is enabled, this file implements common functionality
 234           to parse CPPC tables as described in the ACPI 5.1+ spec. The
 235           routines implemented are meant to be used by other
 236           drivers to control CPU performance using CPPC semantics.
 237           If your platform does not support CPPC in firmware,
 238           leave this option disabled.
 239
 240 config ACPI_PROCESSOR
 241         tristate "Processor"
 242         depends on X86 || IA64 || ARM64
 243         select ACPI_PROCESSOR_IDLE
 244         select ACPI_CPU_FREQ_PSS if X86 || IA64
 245         default y
 246         help
 247           This driver adds support for the ACPI Processor package. It is required
 248           by several flavors of cpufreq performance-state, thermal, throttling and
 249           idle drivers.
 250
 251           To compile this driver as a module, choose M here:
 252           the module will be called processor.
 253
 254 config ACPI_IPMI
 255         tristate "IPMI"
 256         depends on IPMI_SI
 257         default n
 258         help
 259           This driver enables the ACPI to access the BMC controller. And it
 260           uses the IPMI request/response message to communicate with BMC
 261           controller, which can be found on on the server.
 262
 263           To compile this driver as a module, choose M here:
 264           the module will be called as acpi_ipmi.
 265
 266 config ACPI_HOTPLUG_CPU
 267         bool
 268         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 269         select ACPI_CONTAINER
 270         default y
 271
 272 config ACPI_PROCESSOR_AGGREGATOR
 273         tristate "Processor Aggregator"
 274         depends on ACPI_PROCESSOR
 275         depends on X86
 276         help
 277           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 278           specific processor configuration and control that applies to all
 279           processors in the platform. Currently only logical processor idling
 280           is defined, which is to reduce power consumption. This driver
 281           supports the new device.
 282
 283 config ACPI_THERMAL
 284         tristate "Thermal Zone"
 285         depends on ACPI_PROCESSOR
 286         select THERMAL
 287         default y
 288         help
 289           This driver supports ACPI thermal zones.  Most mobile and
 290           some desktop systems support ACPI thermal zones.  It is HIGHLY
 291           recommended that this option be enabled, as your processor(s)
 292           may be damaged without it.
 293
 294           To compile this driver as a module, choose M here:
 295           the module will be called thermal.
 296
 297 config ACPI_NUMA
 298         bool "NUMA support"
 299         depends on NUMA
 300         depends on (X86 || IA64 || ARM64)
 301         default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
 302
 303 config ACPI_CUSTOM_DSDT_FILE
 304         string "Custom DSDT Table file to include"
 305         default ""
 306         depends on !STANDALONE
 307         help
 308           This option supports a custom DSDT by linking it into the kernel.
 309           See Documentation/acpi/dsdt-override.txt
 310
 311           Enter the full path name to the file which includes the AmlCode
 312           declaration.
 313
 314           If unsure, don't enter a file name.
 315
 316 config ACPI_CUSTOM_DSDT
 317         bool
 318         default ACPI_CUSTOM_DSDT_FILE != ""
 319
 320 config ARCH_HAS_ACPI_TABLE_UPGRADE
 321         def_bool n
 322
 323 config ACPI_TABLE_UPGRADE
 324         bool "Allow upgrading ACPI tables via initrd"
 325         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
 326         default y
 327         help
 328           This option provides functionality to upgrade arbitrary ACPI tables
 329           via initrd. No functional change if no ACPI tables are passed via
 330           initrd, therefore it's safe to say Y.
 331           See Documentation/acpi/initrd_table_override.txt for details
 332
 333 config ACPI_DEBUG
 334         bool "Debug Statements"
 335         default n
 336         help
 337           The ACPI subsystem can produce debug output.  Saying Y enables this
 338           output and increases the kernel size by around 50K.
 339
 340           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 341           parameters documented in Documentation/acpi/debug.txt and
 342           Documentation/kernel-parameters.txt to control the type and
 343           amount of debug output.
 344
 345 config ACPI_PCI_SLOT
 346         bool "PCI slot detection driver"
 347         depends on SYSFS
 348         default n
 349         help
 350           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 351           slots in the system.  This can help correlate PCI bus addresses,
 352           i.e., segment/bus/device/function tuples, with physical slots in
 353           the system.  If you are unsure, say N.
 354
 355 config X86_PM_TIMER
 356         bool "Power Management Timer Support" if EXPERT
 357         depends on X86
 358         default y
 359         help
 360           The Power Management Timer is available on all ACPI-capable,
 361           in most cases even if ACPI is unusable or blacklisted.
 362
 363           This timing source is not affected by power management features
 364           like aggressive processor idling, throttling, frequency and/or
 365           voltage scaling, unlike the commonly used Time Stamp Counter
 366           (TSC) timing source.
 367
 368           You should nearly always say Y here because many modern
 369           systems require this timer.
 370
 371 config ACPI_CONTAINER
 372         bool "Container and Module Devices"
 373         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 374         help
 375           This driver supports ACPI Container and Module devices (IDs
 376           ACPI0004, PNP0A05, and PNP0A06).
 377
 378           This helps support hotplug of nodes, CPUs, and memory.
 379
 380           To compile this driver as a module, choose M here:
 381           the module will be called container.
 382
 383 config ACPI_HOTPLUG_MEMORY
 384         bool "Memory Hotplug"
 385         depends on MEMORY_HOTPLUG
 386         help
 387           This driver supports ACPI memory hotplug.  The driver
 388           fields notifications on ACPI memory devices (PNP0C80),
 389           which represent memory ranges that may be onlined or
 390           offlined during runtime.
 391
 392           If your hardware and firmware do not support adding or
 393           removing memory devices at runtime, you need not enable
 394           this driver.
 395
 396           To compile this driver as a module, choose M here:
 397           the module will be called acpi_memhotplug.
 398
 399 config ACPI_HOTPLUG_IOAPIC
 400         bool
 401         depends on PCI
 402         depends on X86_IO_APIC
 403         default y
 404
 405 config ACPI_SBS
 406         tristate "Smart Battery System"
 407         depends on X86
 408         select POWER_SUPPLY
 409         help
 410           This driver supports the Smart Battery System, another
 411           type of access to battery information, found on some laptops.
 412
 413           To compile this driver as a module, choose M here:
 414           the modules will be called sbs and sbshc.
 415
 416 config ACPI_HED
 417         tristate "Hardware Error Device"
 418         help
 419           This driver supports the Hardware Error Device (PNP0C33),
 420           which is used to report some hardware errors notified via
 421           SCI, mainly the corrected errors.
 422
 423 config ACPI_CUSTOM_METHOD
 424         tristate "Allow ACPI methods to be inserted/replaced at run time"
 425         depends on DEBUG_FS
 426         default n
 427         help
 428           This debug facility allows ACPI AML methods to be inserted and/or
 429           replaced without rebooting the system. For details refer to:
 430           Documentation/acpi/method-customizing.txt.
 431
 432           NOTE: This option is security sensitive, because it allows arbitrary
 433           kernel memory to be written to by root (uid=0) users, allowing them
 434           to bypass certain security measures (e.g. if root is not allowed to
 435           load additional kernel modules after boot, this feature may be used
 436           to override that restriction).
 437
 438 config ACPI_BGRT
 439         bool "Boottime Graphics Resource Table support"
 440         depends on EFI && X86
 441         help
 442           This driver adds support for exposing the ACPI Boottime Graphics
 443           Resource Table, which allows the operating system to obtain
 444           data from the firmware boot splash. It will appear under
 445           /sys/firmware/acpi/bgrt/ .
 446
 447 config ACPI_REDUCED_HARDWARE_ONLY
 448         bool "Hardware-reduced ACPI support only" if EXPERT
 449         def_bool n
 450         help
 451           This config item changes the way the ACPI code is built.  When this
 452           option is selected, the kernel will use a specialized version of
 453           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 454           resulting kernel will be smaller but it will also be restricted to
 455           running in ACPI reduced hardware mode ONLY.
 456
 457           If you are unsure what to do, do not enable this option.
 458
 459 source "drivers/acpi/nfit/Kconfig"
 460
 461 source "drivers/acpi/apei/Kconfig"
 462 source "drivers/acpi/dptf/Kconfig"
 463
 464 config ACPI_WATCHDOG
 465         bool
 466
 467 config ACPI_EXTLOG
 468         tristate "Extended Error Log support"
 469         depends on X86_MCE && X86_LOCAL_APIC
 470         select UEFI_CPER
 471         select RAS
 472         default n
 473         help
 474           Certain usages such as Predictive Failure Analysis (PFA) require
 475           more information about the error than what can be described in
 476           processor machine check banks. Most server processors log
 477           additional information about the error in processor uncore
 478           registers. Since the addresses and layout of these registers vary
 479           widely from one processor to another, system software cannot
 480           readily make use of them. To complicate matters further, some of
 481           the additional error information cannot be constructed without
 482           detailed knowledge about platform topology.
 483
 484           Enhanced MCA Logging allows firmware to provide additional error
 485           information to system software, synchronous with MCE or CMCI. This
 486           driver adds support for that functionality with corresponding
 487           tracepoint which carries that information to userspace.
 488
 489 menuconfig PMIC_OPREGION
 490         bool "PMIC (Power Management Integrated Circuit) operation region support"
 491         help
 492           Select this option to enable support for ACPI operation
 493           region of the PMIC chip. The operation region can be used
 494           to control power rails and sensor reading/writing on the
 495           PMIC chip.
 496
 497 if PMIC_OPREGION
 498 config CRC_PMIC_OPREGION
 499         bool "ACPI operation region support for CrystalCove PMIC"
 500         depends on INTEL_SOC_PMIC
 501         help
 502           This config adds ACPI operation region support for CrystalCove PMIC.
 503
 504 config XPOWER_PMIC_OPREGION
 505         bool "ACPI operation region support for XPower AXP288 PMIC"
 506         depends on AXP288_ADC = y
 507         help
 508           This config adds ACPI operation region support for XPower AXP288 PMIC.
 509
 510 config BXT_WC_PMIC_OPREGION
 511         bool "ACPI operation region support for BXT WhiskeyCove PMIC"
 512         depends on INTEL_SOC_PMIC
 513         help
 514           This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
 515
 516 endif
 517
 518 config ACPI_CONFIGFS
 519         tristate "ACPI configfs support"
 520         select CONFIGFS_FS
 521         help
 522           Select this option to enable support for ACPI configuration from
 523           userspace. The configurable ACPI groups will be visible under
 524           /config/acpi, assuming configfs is mounted under /config.
 525
 526 if ARM64
 527 source "drivers/acpi/arm64/Kconfig"
 528 endif
 529
 530 endif   # ACPI