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
   9         depends on PCI
  10         select PNP
  11         default y
  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_SLEEP
  52         bool
  53         depends on SUSPEND || HIBERNATION
  54         default y
  55
  56 config ACPI_PROCFS_POWER
  57         bool "Deprecated power /proc/acpi directories"
  58         depends on PROC_FS
  59         help
  60           For backwards compatibility, this option allows
  61           deprecated power /proc/acpi/ directories to exist, even when
  62           they have been replaced by functions in /sys.
  63           The deprecated directories (and their replacements) include:
  64           /proc/acpi/battery/* (/sys/class/power_supply/*)
  65           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  66           This option has no effect on /proc/acpi/ directories
  67           and functions, which do not yet exist in /sys
  68           This option, together with the proc directories, will be
  69           deleted in the future.
  70
  71           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  72
  73 config ACPI_EC_DEBUGFS
  74         tristate "EC read/write access through /sys/kernel/debug/ec"
  75         default n
  76         help
  77           Say N to disable Embedded Controller /sys/kernel/debug interface
  78
  79           Be aware that using this interface can confuse your Embedded
  80           Controller in a way that a normal reboot is not enough. You then
  81           have to power off your system, and remove the laptop battery for
  82           some seconds.
  83           An Embedded Controller typically is available on laptops and reads
  84           sensor values like battery state and temperature.
  85           The kernel accesses the EC through ACPI parsed code provided by BIOS
  86           tables. This option allows to access the EC directly without ACPI
  87           code being involved.
  88           Thus this option is a debug option that helps to write ACPI drivers
  89           and can be used to identify ACPI code or EC firmware bugs.
  90
  91 config ACPI_AC
  92         tristate "AC Adapter"
  93         depends on X86
  94         select POWER_SUPPLY
  95         default y
  96         help
  97           This driver supports the AC Adapter object, which indicates
  98           whether a system is on AC or not.  If you have a system that can
  99           switch between A/C and battery, say Y.
 100
 101           To compile this driver as a module, choose M here:
 102           the module will be called ac.
 103
 104 config ACPI_BATTERY
 105         tristate "Battery"
 106         depends on X86
 107         select POWER_SUPPLY
 108         default y
 109         help
 110           This driver adds support for battery information through
 111           /proc/acpi/battery. If you have a mobile system with a battery,
 112           say Y.
 113
 114           To compile this driver as a module, choose M here:
 115           the module will be called battery.
 116
 117 config ACPI_BUTTON
 118         tristate "Button"
 119         depends on INPUT
 120         default y
 121         help
 122           This driver handles events on the power, sleep, and lid buttons.
 123           A daemon reads events from input devices or via netlink and
 124           performs user-defined actions such as shutting down the system.
 125           This is necessary for software-controlled poweroff.
 126
 127           To compile this driver as a module, choose M here:
 128           the module will be called button.
 129
 130 config ACPI_VIDEO
 131         tristate "Video"
 132         depends on X86 && BACKLIGHT_CLASS_DEVICE
 133         depends on INPUT
 134         select THERMAL
 135         help
 136           This driver implements the ACPI Extensions For Display Adapters
 137           for integrated graphics devices on motherboard, as specified in
 138           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 139           such as defining the video POST device, retrieving EDID information,
 140           and setting up a video output.
 141
 142           To compile this driver as a module, choose M here:
 143           the module will be called video.
 144
 145 config ACPI_FAN
 146         tristate "Fan"
 147         depends on THERMAL
 148         default y
 149         help
 150           This driver supports ACPI fan devices, allowing user-mode
 151           applications to perform basic fan control (on, off, status).
 152
 153           To compile this driver as a module, choose M here:
 154           the module will be called fan.
 155
 156 config ACPI_DOCK
 157         bool "Dock"
 158         help
 159           This driver supports ACPI-controlled docking stations and removable
 160           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 161
 162 config ACPI_PROCESSOR
 163         tristate "Processor"
 164         select THERMAL
 165         select CPU_IDLE
 166         default y
 167         help
 168           This driver installs ACPI as the idle handler for Linux and uses
 169           ACPI C2 and C3 processor states to save power on systems that
 170           support it.  It is required by several flavors of cpufreq
 171           performance-state drivers.
 172
 173           To compile this driver as a module, choose M here:
 174           the module will be called processor.
 175
 176 config ACPI_IPMI
 177         tristate "IPMI"
 178         depends on IPMI_SI
 179         default n
 180         help
 181           This driver enables the ACPI to access the BMC controller. And it
 182           uses the IPMI request/response message to communicate with BMC
 183           controller, which can be found on on the server.
 184
 185           To compile this driver as a module, choose M here:
 186           the module will be called as acpi_ipmi.
 187
 188 config ACPI_HOTPLUG_CPU
 189         bool
 190         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 191         select ACPI_CONTAINER
 192         default y
 193
 194 config ACPI_PROCESSOR_AGGREGATOR
 195         tristate "Processor Aggregator"
 196         depends on ACPI_PROCESSOR
 197         depends on X86
 198         help
 199           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 200           specific processor configuration and control that applies to all
 201           processors in the platform. Currently only logical processor idling
 202           is defined, which is to reduce power consumption. This driver
 203           supports the new device.
 204
 205 config ACPI_THERMAL
 206         tristate "Thermal Zone"
 207         depends on ACPI_PROCESSOR
 208         select THERMAL
 209         default y
 210         help
 211           This driver supports ACPI thermal zones.  Most mobile and
 212           some desktop systems support ACPI thermal zones.  It is HIGHLY
 213           recommended that this option be enabled, as your processor(s)
 214           may be damaged without it.
 215
 216           To compile this driver as a module, choose M here:
 217           the module will be called thermal.
 218
 219 config ACPI_NUMA
 220         bool "NUMA support"
 221         depends on NUMA
 222         depends on (X86 || IA64)
 223         default y if IA64_GENERIC || IA64_SGI_SN2
 224
 225 config ACPI_CUSTOM_DSDT_FILE
 226         string "Custom DSDT Table file to include"
 227         default ""
 228         depends on !STANDALONE
 229         help
 230           This option supports a custom DSDT by linking it into the kernel.
 231           See Documentation/acpi/dsdt-override.txt
 232
 233           Enter the full path name to the file which includes the AmlCode
 234           declaration.
 235
 236           If unsure, don't enter a file name.
 237
 238 config ACPI_CUSTOM_DSDT
 239         bool
 240         default ACPI_CUSTOM_DSDT_FILE != ""
 241
 242 config ACPI_INITRD_TABLE_OVERRIDE
 243         bool "ACPI tables override via initrd"
 244         depends on BLK_DEV_INITRD && X86
 245         default n
 246         help
 247           This option provides functionality to override arbitrary ACPI tables
 248           via initrd. No functional change if no ACPI tables are passed via
 249           initrd, therefore it's safe to say Y.
 250           See Documentation/acpi/initrd_table_override.txt for details
 251
 252 config ACPI_DEBUG
 253         bool "Debug Statements"
 254         default n
 255         help
 256           The ACPI subsystem can produce debug output.  Saying Y enables this
 257           output and increases the kernel size by around 50K.
 258
 259           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 260           parameters documented in Documentation/acpi/debug.txt and
 261           Documentation/kernel-parameters.txt to control the type and
 262           amount of debug output.
 263
 264 config ACPI_PCI_SLOT
 265         bool "PCI slot detection driver"
 266         depends on SYSFS
 267         default n
 268         help
 269           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 270           slots in the system.  This can help correlate PCI bus addresses,
 271           i.e., segment/bus/device/function tuples, with physical slots in
 272           the system.  If you are unsure, say N.
 273
 274 config X86_PM_TIMER
 275         bool "Power Management Timer Support" if EXPERT
 276         depends on X86
 277         default y
 278         help
 279           The Power Management Timer is available on all ACPI-capable,
 280           in most cases even if ACPI is unusable or blacklisted.
 281
 282           This timing source is not affected by power management features
 283           like aggressive processor idling, throttling, frequency and/or
 284           voltage scaling, unlike the commonly used Time Stamp Counter
 285           (TSC) timing source.
 286
 287           You should nearly always say Y here because many modern
 288           systems require this timer.
 289
 290 config ACPI_CONTAINER
 291         bool "Container and Module Devices"
 292         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 293         help
 294           This driver supports ACPI Container and Module devices (IDs
 295           ACPI0004, PNP0A05, and PNP0A06).
 296
 297           This helps support hotplug of nodes, CPUs, and memory.
 298
 299           To compile this driver as a module, choose M here:
 300           the module will be called container.
 301
 302 config ACPI_HOTPLUG_MEMORY
 303         bool "Memory Hotplug"
 304         depends on MEMORY_HOTPLUG
 305         help
 306           This driver supports ACPI memory hotplug.  The driver
 307           fields notifications on ACPI memory devices (PNP0C80),
 308           which represent memory ranges that may be onlined or
 309           offlined during runtime.
 310
 311           If your hardware and firmware do not support adding or
 312           removing memory devices at runtime, you need not enable
 313           this driver.
 314
 315           To compile this driver as a module, choose M here:
 316           the module will be called acpi_memhotplug.
 317
 318 config ACPI_HOTPLUG_IOAPIC
 319         bool
 320         depends on PCI
 321         depends on X86_IO_APIC
 322         default y
 323
 324 config ACPI_SBS
 325         tristate "Smart Battery System"
 326         depends on X86
 327         select POWER_SUPPLY
 328         help
 329           This driver supports the Smart Battery System, another
 330           type of access to battery information, found on some laptops.
 331
 332           To compile this driver as a module, choose M here:
 333           the modules will be called sbs and sbshc.
 334
 335 config ACPI_HED
 336         tristate "Hardware Error Device"
 337         help
 338           This driver supports the Hardware Error Device (PNP0C33),
 339           which is used to report some hardware errors notified via
 340           SCI, mainly the corrected errors.
 341
 342 config ACPI_CUSTOM_METHOD
 343         tristate "Allow ACPI methods to be inserted/replaced at run time"
 344         depends on DEBUG_FS
 345         default n
 346         help
 347           This debug facility allows ACPI AML methods to be inserted and/or
 348           replaced without rebooting the system. For details refer to:
 349           Documentation/acpi/method-customizing.txt.
 350
 351           NOTE: This option is security sensitive, because it allows arbitrary
 352           kernel memory to be written to by root (uid=0) users, allowing them
 353           to bypass certain security measures (e.g. if root is not allowed to
 354           load additional kernel modules after boot, this feature may be used
 355           to override that restriction).
 356
 357 config ACPI_BGRT
 358         bool "Boottime Graphics Resource Table support"
 359         depends on EFI && X86
 360         help
 361           This driver adds support for exposing the ACPI Boottime Graphics
 362           Resource Table, which allows the operating system to obtain
 363           data from the firmware boot splash. It will appear under
 364           /sys/firmware/acpi/bgrt/ .
 365
 366 config ACPI_REDUCED_HARDWARE_ONLY
 367         bool "Hardware-reduced ACPI support only" if EXPERT
 368         def_bool n
 369         help
 370           This config item changes the way the ACPI code is built.  When this
 371           option is selected, the kernel will use a specialized version of
 372           ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
 373           resulting kernel will be smaller but it will also be restricted to
 374           running in ACPI reduced hardware mode ONLY.
 375
 376           If you are unsure what to do, do not enable this option.
 377
 378 source "drivers/acpi/apei/Kconfig"
 379
 380 config ACPI_EXTLOG
 381         tristate "Extended Error Log support"
 382         depends on X86_MCE && X86_LOCAL_APIC
 383         select UEFI_CPER
 384         select RAS
 385         default n
 386         help
 387           Certain usages such as Predictive Failure Analysis (PFA) require
 388           more information about the error than what can be described in
 389           processor machine check banks. Most server processors log
 390           additional information about the error in processor uncore
 391           registers. Since the addresses and layout of these registers vary
 392           widely from one processor to another, system software cannot
 393           readily make use of them. To complicate matters further, some of
 394           the additional error information cannot be constructed without
 395           detailed knowledge about platform topology.
 396
 397           Enhanced MCA Logging allows firmware to provide additional error
 398           information to system software, synchronous with MCE or CMCI. This
 399           driver adds support for that functionality with corresponding
 400           tracepoint which carries that information to userspace.
 401
 402 menuconfig PMIC_OPREGION
 403         bool "PMIC (Power Management Integrated Circuit) operation region support"
 404         help
 405           Select this option to enable support for ACPI operation
 406           region of the PMIC chip. The operation region can be used
 407           to control power rails and sensor reading/writing on the
 408           PMIC chip.
 409
 410 if PMIC_OPREGION
 411 config CRC_PMIC_OPREGION
 412         bool "ACPI operation region support for CrystalCove PMIC"
 413         depends on INTEL_SOC_PMIC
 414         help
 415           This config adds ACPI operation region support for CrystalCove PMIC.
 416
 417 config XPOWER_PMIC_OPREGION
 418         bool "ACPI operation region support for XPower AXP288 PMIC"
 419         depends on AXP288_ADC = y
 420         help
 421           This config adds ACPI operation region support for XPower AXP288 PMIC.
 422
 423 endif
 424
 425 endif   # ACPI