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           <http://www.lesswatts.org/projects/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 co-developed by
  35           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  36           The specification is available at:
  37           <http://www.acpi.info>
  38
  39 if ACPI
  40
  41 config ACPI_SLEEP
  42         bool
  43         depends on SUSPEND || HIBERNATION
  44         default y
  45
  46 config ACPI_PROCFS
  47         bool "Deprecated /proc/acpi files"
  48         depends on PROC_FS
  49         help
  50           For backwards compatibility, this option allows
  51           deprecated /proc/acpi/ files to exist, even when
  52           they have been replaced by functions in /sys.
  53
  54           This option has no effect on /proc/acpi/ files
  55           and functions which do not yet exist in /sys.
  56
  57           Say N to delete /proc/acpi/ files that have moved to /sys/
  58
  59 config ACPI_PROCFS_POWER
  60         bool "Deprecated power /proc/acpi directories"
  61         depends on PROC_FS
  62         help
  63           For backwards compatibility, this option allows
  64           deprecated power /proc/acpi/ directories to exist, even when
  65           they have been replaced by functions in /sys.
  66           The deprecated directories (and their replacements) include:
  67           /proc/acpi/battery/* (/sys/class/power_supply/*)
  68           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  69           This option has no effect on /proc/acpi/ directories
  70           and functions, which do not yet exist in /sys
  71           This option, together with the proc directories, will be
  72           deleted in 2.6.39.
  73
  74           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  75
  76 config ACPI_POWER_METER
  77         tristate "ACPI 4.0 power meter"
  78         depends on HWMON
  79         help
  80           This driver exposes ACPI 4.0 power meters as hardware monitoring
  81           devices.  Say Y (or M) if you have a computer with ACPI 4.0 firmware
  82           and a power meter.
  83
  84           To compile this driver as a module, choose M here:
  85           the module will be called power-meter.
  86
  87 config ACPI_EC_DEBUGFS
  88         tristate "EC read/write access through /sys/kernel/debug/ec"
  89         default n
  90         help
  91           Say N to disable Embedded Controller /sys/kernel/debug interface
  92
  93           Be aware that using this interface can confuse your Embedded
  94           Controller in a way that a normal reboot is not enough. You then
  95           have to power off your system, and remove the laptop battery for
  96           some seconds.
  97           An Embedded Controller typically is available on laptops and reads
  98           sensor values like battery state and temperature.
  99           The kernel accesses the EC through ACPI parsed code provided by BIOS
 100           tables. This option allows to access the EC directly without ACPI
 101           code being involved.
 102           Thus this option is a debug option that helps to write ACPI drivers
 103           and can be used to identify ACPI code or EC firmware bugs.
 104
 105 config ACPI_PROC_EVENT
 106         bool "Deprecated /proc/acpi/event support"
 107         depends on PROC_FS
 108         default y
 109         help
 110           A user-space daemon, acpid, typically reads /proc/acpi/event
 111           and handles all ACPI-generated events.
 112
 113           These events are now delivered to user-space either
 114           via the input layer or as netlink events.
 115
 116           This build option enables the old code for legacy
 117           user-space implementation.  After some time, this will
 118           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 119
 120           Say Y here to retain the old behaviour.  Say N if your
 121           user-space is newer than kernel 2.6.23 (September 2007).
 122
 123 config ACPI_AC
 124         tristate "AC Adapter"
 125         depends on X86
 126         select POWER_SUPPLY
 127         default y
 128         help
 129           This driver supports the AC Adapter object, which indicates
 130           whether a system is on AC or not.  If you have a system that can
 131           switch between A/C and battery, say Y.
 132
 133           To compile this driver as a module, choose M here:
 134           the module will be called ac.
 135
 136 config ACPI_BATTERY
 137         tristate "Battery"
 138         depends on X86
 139         select POWER_SUPPLY
 140         default y
 141         help
 142           This driver adds support for battery information through
 143           /proc/acpi/battery. If you have a mobile system with a battery,
 144           say Y.
 145
 146           To compile this driver as a module, choose M here:
 147           the module will be called battery.
 148
 149 config ACPI_BUTTON
 150         tristate "Button"
 151         depends on INPUT
 152         default y
 153         help
 154           This driver handles events on the power, sleep, and lid buttons.
 155           A daemon reads /proc/acpi/event and perform user-defined actions
 156           such as shutting down the system.  This is necessary for
 157           software-controlled poweroff.
 158
 159           To compile this driver as a module, choose M here:
 160           the module will be called button.
 161
 162 config ACPI_VIDEO
 163         tristate "Video"
 164         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 165         depends on INPUT
 166         select THERMAL
 167         help
 168           This driver implements the ACPI Extensions For Display Adapters
 169           for integrated graphics devices on motherboard, as specified in
 170           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 171           such as defining the video POST device, retrieving EDID information,
 172           and setting up a video output.
 173
 174           To compile this driver as a module, choose M here:
 175           the module will be called video.
 176
 177 config ACPI_FAN
 178         tristate "Fan"
 179         select THERMAL
 180         default y
 181         help
 182           This driver supports ACPI fan devices, allowing user-mode
 183           applications to perform basic fan control (on, off, status).
 184
 185           To compile this driver as a module, choose M here:
 186           the module will be called fan.
 187
 188 config ACPI_DOCK
 189         bool "Dock"
 190         depends on EXPERIMENTAL
 191         help
 192           This driver supports ACPI-controlled docking stations and removable
 193           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 194
 195 config ACPI_PROCESSOR
 196         tristate "Processor"
 197         select THERMAL
 198         select CPU_IDLE
 199         default y
 200         help
 201           This driver installs ACPI as the idle handler for Linux and uses
 202           ACPI C2 and C3 processor states to save power on systems that
 203           support it.  It is required by several flavors of cpufreq
 204           performance-state drivers.
 205
 206           To compile this driver as a module, choose M here:
 207           the module will be called processor.
 208 config ACPI_IPMI
 209         tristate "IPMI"
 210         depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER
 211         default n
 212         help
 213           This driver enables the ACPI to access the BMC controller. And it
 214           uses the IPMI request/response message to communicate with BMC
 215           controller, which can be found on on the server.
 216
 217           To compile this driver as a module, choose M here:
 218           the module will be called as acpi_ipmi.
 219
 220 config ACPI_HOTPLUG_CPU
 221         bool
 222         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 223         select ACPI_CONTAINER
 224         default y
 225
 226 config ACPI_PROCESSOR_AGGREGATOR
 227         tristate "Processor Aggregator"
 228         depends on ACPI_PROCESSOR
 229         depends on EXPERIMENTAL
 230         depends on X86
 231         help
 232           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 233           specific processor configuration and control that applies to all
 234           processors in the platform. Currently only logical processor idling
 235           is defined, which is to reduce power consumption. This driver
 236           supports the new device.
 237
 238 config ACPI_THERMAL
 239         tristate "Thermal Zone"
 240         depends on ACPI_PROCESSOR
 241         select THERMAL
 242         default y
 243         help
 244           This driver supports ACPI thermal zones.  Most mobile and
 245           some desktop systems support ACPI thermal zones.  It is HIGHLY
 246           recommended that this option be enabled, as your processor(s)
 247           may be damaged without it.
 248
 249           To compile this driver as a module, choose M here:
 250           the module will be called thermal.
 251
 252 config ACPI_NUMA
 253         bool "NUMA support"
 254         depends on NUMA
 255         depends on (X86 || IA64)
 256         default y if IA64_GENERIC || IA64_SGI_SN2
 257
 258 config ACPI_CUSTOM_DSDT_FILE
 259         string "Custom DSDT Table file to include"
 260         default ""
 261         depends on !STANDALONE
 262         help
 263           This option supports a custom DSDT by linking it into the kernel.
 264           See Documentation/acpi/dsdt-override.txt
 265
 266           Enter the full path name to the file which includes the AmlCode
 267           declaration.
 268
 269           If unsure, don't enter a file name.
 270
 271 config ACPI_CUSTOM_DSDT
 272         bool
 273         default ACPI_CUSTOM_DSDT_FILE != ""
 274
 275 config ACPI_BLACKLIST_YEAR
 276         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 277         default 0
 278         help
 279           Enter a 4-digit year, e.g., 2001, to disable ACPI by default
 280           on platforms with DMI BIOS date before January 1st that year.
 281           "acpi=force" can be used to override this mechanism.
 282
 283           Enter 0 to disable this mechanism and allow ACPI to
 284           run by default no matter what the year.  (default)
 285
 286 config ACPI_DEBUG
 287         bool "Debug Statements"
 288         default n
 289         help
 290           The ACPI subsystem can produce debug output.  Saying Y enables this
 291           output and increases the kernel size by around 50K.
 292
 293           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 294           parameters documented in Documentation/acpi/debug.txt and
 295           Documentation/kernel-parameters.txt to control the type and
 296           amount of debug output.
 297
 298 config ACPI_DEBUG_FUNC_TRACE
 299         bool "Additionally enable ACPI function tracing"
 300         default n
 301         depends on ACPI_DEBUG
 302         help
 303           ACPI Debug Statements slow down ACPI processing. Function trace
 304           is about half of the penalty and is rarely useful.
 305
 306 config ACPI_PCI_SLOT
 307         tristate "PCI slot detection driver"
 308         depends on SYSFS
 309         default n
 310         help
 311           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 312           slots in the system.  This can help correlate PCI bus addresses,
 313           i.e., segment/bus/device/function tuples, with physical slots in
 314           the system.  If you are unsure, say N.
 315
 316           To compile this driver as a module, choose M here:
 317           the module will be called pci_slot.
 318
 319 config X86_PM_TIMER
 320         bool "Power Management Timer Support" if EXPERT
 321         depends on X86
 322         default y
 323         help
 324           The Power Management Timer is available on all ACPI-capable,
 325           in most cases even if ACPI is unusable or blacklisted.
 326
 327           This timing source is not affected by power management features
 328           like aggressive processor idling, throttling, frequency and/or
 329           voltage scaling, unlike the commonly used Time Stamp Counter
 330           (TSC) timing source.
 331
 332           You should nearly always say Y here because many modern
 333           systems require this timer.
 334
 335 config ACPI_CONTAINER
 336         tristate "Container and Module Devices (EXPERIMENTAL)"
 337         depends on EXPERIMENTAL
 338         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 339         help
 340           This driver supports ACPI Container and Module devices (IDs
 341           ACPI0004, PNP0A05, and PNP0A06).
 342
 343           This helps support hotplug of nodes, CPUs, and memory.
 344
 345           To compile this driver as a module, choose M here:
 346           the module will be called container.
 347
 348 config ACPI_HOTPLUG_MEMORY
 349         tristate "Memory Hotplug"
 350         depends on MEMORY_HOTPLUG
 351         default n
 352         help
 353           This driver supports ACPI memory hotplug.  The driver
 354           fields notifications on ACPI memory devices (PNP0C80),
 355           which represent memory ranges that may be onlined or
 356           offlined during runtime.
 357
 358           If your hardware and firmware do not support adding or
 359           removing memory devices at runtime, you need not enable
 360           this driver.
 361
 362           To compile this driver as a module, choose M here:
 363           the module will be called acpi_memhotplug.
 364
 365 config ACPI_SBS
 366         tristate "Smart Battery System"
 367         depends on X86
 368         select POWER_SUPPLY
 369         help
 370           This driver supports the Smart Battery System, another
 371           type of access to battery information, found on some laptops.
 372
 373           To compile this driver as a module, choose M here:
 374           the modules will be called sbs and sbshc.
 375
 376 config ACPI_HED
 377         tristate "Hardware Error Device"
 378         help
 379           This driver supports the Hardware Error Device (PNP0C33),
 380           which is used to report some hardware errors notified via
 381           SCI, mainly the corrected errors.
 382
 383 source "drivers/acpi/apei/Kconfig"
 384
 385 endif   # ACPI