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