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_IDLE
 217         bool
 218         select CPU_IDLE
 219
 220 config ACPI_CPPC_LIB
 221         bool
 222         depends on ACPI_PROCESSOR
 223         depends on !ACPI_CPU_FREQ_PSS
 224         select MAILBOX
 225         select PCC
 226         help
 227           If this option is enabled, this file implements common functionality
 228           to parse CPPC tables as described in the ACPI 5.1+ spec. The
 229           routines implemented are meant to be used by other
 230           drivers to control CPU performance using CPPC semantics.
 231           If your platform does not support CPPC in firmware,
 232           leave this option disabled.
 233
 234 config ACPI_PROCESSOR
 235         tristate "Processor"
 236         depends on X86 || IA64 || ARM64
 237         select ACPI_PROCESSOR_IDLE if X86 || IA64
 238         select ACPI_CPU_FREQ_PSS if X86 || IA64
 239         default y
 240         help
 241           This driver adds support for the ACPI Processor package. It is required
 242           by several flavors of cpufreq performance-state, thermal, throttling and
 243           idle drivers.
 244
 245           To compile this driver as a module, choose M here:
 246           the module will be called processor.
 247
 248 config ACPI_IPMI
 249         tristate "IPMI"
 250         depends on IPMI_SI
 251         default n
 252         help
 253           This driver enables the ACPI to access the BMC controller. And it
 254           uses the IPMI request/response message to communicate with BMC
 255           controller, which can be found on on the server.
 256
 257           To compile this driver as a module, choose M here:
 258           the module will be called as acpi_ipmi.
 259
 260 config ACPI_HOTPLUG_CPU
 261         bool
 262         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 263         select ACPI_CONTAINER
 264         default y
 265
 266 config ACPI_PROCESSOR_AGGREGATOR
 267         tristate "Processor Aggregator"
 268         depends on ACPI_PROCESSOR
 269         depends on X86
 270         help
 271           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 272           specific processor configuration and control that applies to all
 273           processors in the platform. Currently only logical processor idling
 274           is defined, which is to reduce power consumption. This driver
 275           supports the new device.
 276
 277 config ACPI_THERMAL
 278         tristate "Thermal Zone"
 279         depends on ACPI_PROCESSOR
 280         select THERMAL
 281         default y
 282         help
 283           This driver supports ACPI thermal zones.  Most mobile and
 284           some desktop systems support ACPI thermal zones.  It is HIGHLY
 285           recommended that this option be enabled, as your processor(s)
 286           may be damaged without it.
 287
 288           To compile this driver as a module, choose M here:
 289           the module will be called thermal.
 290
 291 config ACPI_NUMA
 292         bool "NUMA support"
 293         depends on NUMA
 294         depends on (X86 || IA64)
 295         default y if IA64_GENERIC || IA64_SGI_SN2
 296
 297 config ACPI_CUSTOM_DSDT_FILE
 298         string "Custom DSDT Table file to include"
 299         default ""
 300         depends on !STANDALONE
 301         help
 302           This option supports a custom DSDT by linking it into the kernel.
 303           See Documentation/acpi/dsdt-override.txt
 304
 305           Enter the full path name to the file which includes the AmlCode
 306           declaration.
 307
 308           If unsure, don't enter a file name.
 309
 310 config ACPI_CUSTOM_DSDT
 311         bool
 312         default ACPI_CUSTOM_DSDT_FILE != ""
 313
 314 config ARCH_HAS_ACPI_TABLE_UPGRADE
 315         def_bool n
 316
 317 config ACPI_TABLE_UPGRADE
 318         bool "Allow upgrading ACPI tables via initrd"
 319         depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
 320         default y
 321         help
 322           This option provides functionality to upgrade arbitrary ACPI tables
 323           via initrd. No functional change if no ACPI tables are passed via
 324           initrd, therefore it's safe to say Y.
 325           See Documentation/acpi/initrd_table_override.txt for details
 326
 327 config ACPI_DEBUG
 328         bool "Debug Statements"
 329         default n
 330         help
 331           The ACPI subsystem can produce debug output.  Saying Y enables this
 332           output and increases the kernel size by around 50K.
 333
 334           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 335           parameters documented in Documentation/acpi/debug.txt and
 336           Documentation/kernel-parameters.txt to control the type and
 337           amount of debug output.
 338
 339 config ACPI_PCI_SLOT
 340         bool "PCI slot detection driver"
 341         depends on SYSFS
 342         default n
 343         help
 344           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 345           slots in the system.  This can help correlate PCI bus addresses,
 346           i.e., segment/bus/device/function tuples, with physical slots in
 347           the system.  If you are unsure, say N.
 348
 349 config X86_PM_TIMER
 350         bool "Power Management Timer Support" if EXPERT
 351         depends on X86
 352         default y
 353         help
 354           The Power Management Timer is available on all ACPI-capable,
 355           in most cases even if ACPI is unusable or blacklisted.
 356
 357           This timing source is not affected by power management features
 358           like aggressive processor idling, throttling, frequency and/or
 359           voltage scaling, unlike the commonly used Time Stamp Counter
 360           (TSC) timing source.
 361
 362           You should nearly always say Y here because many modern
 363           systems require this timer.
 364
 365 config ACPI_CONTAINER
 366         bool "Container and Module Devices"
 367         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 368         help
 369           This driver supports ACPI Container and Module devices (IDs
 370           ACPI0004, PNP0A05, and PNP0A06).
 371
 372           This helps support hotplug of nodes, CPUs, and memory.
 373
 374           To compile this driver as a module, choose M here:
 375           the module will be called container.
 376
 377 config ACPI_HOTPLUG_MEMORY
 378         bool "Memory Hotplug"
 379         depends on MEMORY_HOTPLUG
 380         help
 381           This driver supports ACPI memory hotplug.  The driver
 382           fields notifications on ACPI memory devices (PNP0C80),
 383           which represent memory ranges that may be onlined or
 384           offlined during runtime.
 385
 386           If your hardware and firmware do not support adding or
 387           removing memory devices at runtime, you need not enable
 388           this driver.
 389
 390           To compile this driver as a module, choose M here:
 391           the module will be called acpi_memhotplug.
 392
 393 config ACPI_HOTPLUG_IOAPIC
 394         bool
 395         depends on PCI
 396         depends on X86_IO_APIC
 397         default y
 398
 399 config ACPI_SBS
 400         tristate "Smart Battery System"
 401         depends on X86
 402         select POWER_SUPPLY
 403         help
 404           This driver supports the Smart Battery System, another
 405           type of access to battery information, found on some laptops.
 406
 407           To compile this driver as a module, choose M here:
 408           the modules will be called sbs and sbshc.
 409
 410 config ACPI_HED
 411         tristate "Hardware Error Device"
 412         help
 413           This driver supports the Hardware Error Device (PNP0C33),
 414           which is used to report some hardware errors notified via
 415           SCI, mainly the corrected errors.
 416
 417 config ACPI_CUSTOM_METHOD
 418         tristate "Allow ACPI methods to be inserted/replaced at run time"
 419         depends on DEBUG_FS
 420         default n
 421         help
 422           This debug facility allows ACPI AML methods to be inserted and/or
 423           replaced without rebooting the system. For details refer to:
 424           Documentation/acpi/method-customizing.txt.
 425
 426           NOTE: This option is security sensitive, because it allows arbitrary
 427           kernel memory to be written to by root (uid=0) users, allowing them
 428           to bypass certain security measures (e.g. if root is not allowed to
 429           load additional kernel modules after boot, this feature may be used
 430           to override that restriction).
 431
 432 config ACPI_BGRT
 433         bool "Boottime Graphics Resource Table support"
 434         depends on EFI && X86
 435         help
 436           This driver adds support for exposing the ACPI Boottime Graphics
 437           Resource Table, which allows the operating system to obtain
 438           data from the firmware boot splash. It will appear under
 439           /sys/firmware/acpi/bgrt/ .
 440
 441 config ACPI_REDUCED_HARDWARE_ONLY
 442         bool "Hardware-reduced ACPI support only" if EXPERT
 443         def_bool n
 444         help
 445           This config item changes the way the ACPI code is built.  When this
 446           option is selected, the kernel will use a specialized version of
 447           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 448           resulting kernel will be smaller but it will also be restricted to
 449           running in ACPI reduced hardware mode ONLY.
 450
 451           If you are unsure what to do, do not enable this option.
 452
 453 config ACPI_NFIT
 454         tristate "ACPI NVDIMM Firmware Interface Table (NFIT)"
 455         depends on PHYS_ADDR_T_64BIT
 456         depends on BLK_DEV
 457         depends on ARCH_HAS_MMIO_FLUSH
 458         select LIBNVDIMM
 459         help
 460           Infrastructure to probe ACPI 6 compliant platforms for
 461           NVDIMMs (NFIT) and register a libnvdimm device tree.  In
 462           addition to storage devices this also enables libnvdimm to pass
 463           ACPI._DSM messages for platform/dimm configuration.
 464
 465           To compile this driver as a module, choose M here:
 466           the module will be called nfit.
 467
 468 config ACPI_NFIT_DEBUG
 469         bool "NFIT DSM debug"
 470         depends on ACPI_NFIT
 471         depends on DYNAMIC_DEBUG
 472         default n
 473         help
 474           Enabling this option causes the nfit driver to dump the
 475           input and output buffers of _DSM operations on the ACPI0012
 476           device and its children.  This can be very verbose, so leave
 477           it disabled unless you are debugging a hardware / firmware
 478           issue.
 479
 480 source "drivers/acpi/apei/Kconfig"
 481
 482 config ACPI_EXTLOG
 483         tristate "Extended Error Log support"
 484         depends on X86_MCE && X86_LOCAL_APIC
 485         select UEFI_CPER
 486         select RAS
 487         default n
 488         help
 489           Certain usages such as Predictive Failure Analysis (PFA) require
 490           more information about the error than what can be described in
 491           processor machine check banks. Most server processors log
 492           additional information about the error in processor uncore
 493           registers. Since the addresses and layout of these registers vary
 494           widely from one processor to another, system software cannot
 495           readily make use of them. To complicate matters further, some of
 496           the additional error information cannot be constructed without
 497           detailed knowledge about platform topology.
 498
 499           Enhanced MCA Logging allows firmware to provide additional error
 500           information to system software, synchronous with MCE or CMCI. This
 501           driver adds support for that functionality with corresponding
 502           tracepoint which carries that information to userspace.
 503
 504 menuconfig PMIC_OPREGION
 505         bool "PMIC (Power Management Integrated Circuit) operation region support"
 506         help
 507           Select this option to enable support for ACPI operation
 508           region of the PMIC chip. The operation region can be used
 509           to control power rails and sensor reading/writing on the
 510           PMIC chip.
 511
 512 if PMIC_OPREGION
 513 config CRC_PMIC_OPREGION
 514         bool "ACPI operation region support for CrystalCove PMIC"
 515         depends on INTEL_SOC_PMIC
 516         help
 517           This config adds ACPI operation region support for CrystalCove PMIC.
 518
 519 config XPOWER_PMIC_OPREGION
 520         bool "ACPI operation region support for XPower AXP288 PMIC"
 521         depends on AXP288_ADC = y
 522         help
 523           This config adds ACPI operation region support for XPower AXP288 PMIC.
 524
 525 endif
 526
 527 config ACPI_CONFIGFS
 528         tristate "ACPI configfs support"
 529         select CONFIGFS_FS
 530         help
 531           Select this option to enable support for ACPI configuration from
 532           userspace. The configurable ACPI groups will be visible under
 533           /config/acpi, assuming configfs is mounted under /config.
 534
 535 endif   # ACPI