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         depends on PM
  11         select PNP
  12         default y
  13         help
  14           Advanced Configuration and Power Interface (ACPI) support for
  15           Linux requires an ACPI-compliant platform (hardware/firmware),
  16           and assumes the presence of OS-directed configuration and power
  17           management (OSPM) software.  This option will enlarge your
  18           kernel by about 70K.
  19
  20           Linux ACPI provides a robust functional replacement for several
  21           legacy configuration and power management interfaces, including
  22           the Plug-and-Play BIOS specification (PnP BIOS), the
  23           MultiProcessor Specification (MPS), and the Advanced Power
  24           Management (APM) specification.  If both ACPI and APM support
  25           are configured, ACPI is used.
  26
  27           The project home page for the Linux ACPI subsystem is here:
  28           <http://www.lesswatts.org/projects/acpi/>
  29
  30           Linux support for ACPI is based on Intel Corporation's ACPI
  31           Component Architecture (ACPI CA).  For more information on the
  32           ACPI CA, see:
  33           <http://acpica.org/>
  34
  35           ACPI is an open industry specification co-developed by
  36           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  37           The specification is available at:
  38           <http://www.acpi.info>
  39
  40 if ACPI
  41
  42 config ACPI_SLEEP
  43         bool
  44         depends on SUSPEND || HIBERNATION
  45         default y
  46
  47 config ACPI_PROCFS
  48         bool "Deprecated /proc/acpi files"
  49         depends on PROC_FS
  50         help
  51           For backwards compatibility, this option allows
  52           deprecated /proc/acpi/ files to exist, even when
  53           they have been replaced by functions in /sys.
  54
  55           This option has no effect on /proc/acpi/ files
  56           and functions which do not yet exist in /sys.
  57
  58           Say N to delete /proc/acpi/ files that have moved to /sys/
  59
  60 config ACPI_PROCFS_POWER
  61         bool "Deprecated power /proc/acpi directories"
  62         depends on PROC_FS
  63         help
  64           For backwards compatibility, this option allows
  65           deprecated power /proc/acpi/ directories to exist, even when
  66           they have been replaced by functions in /sys.
  67           The deprecated directories (and their replacements) include:
  68           /proc/acpi/battery/* (/sys/class/power_supply/*)
  69           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  70           This option has no effect on /proc/acpi/ directories
  71           and functions, which do not yet exist in /sys
  72           This option, together with the proc directories, will be
  73           deleted in 2.6.39.
  74
  75           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  76
  77 config ACPI_POWER_METER
  78         tristate "ACPI 4.0 power meter"
  79         depends on HWMON
  80         help
  81           This driver exposes ACPI 4.0 power meters as hardware monitoring
  82           devices.  Say Y (or M) if you have a computer with ACPI 4.0 firmware
  83           and a power meter.
  84
  85           To compile this driver as a module, choose M here:
  86           the module will be called power-meter.
  87
  88 config ACPI_EC_DEBUGFS
  89         tristate "EC read/write access through /sys/kernel/debug/ec"
  90         default n
  91         help
  92           Say N to disable Embedded Controller /sys/kernel/debug interface
  93
  94           Be aware that using this interface can confuse your Embedded
  95           Controller in a way that a normal reboot is not enough. You then
  96           have to power off your system, and remove the laptop battery for
  97           some seconds.
  98           An Embedded Controller typically is available on laptops and reads
  99           sensor values like battery state and temperature.
 100           The kernel accesses the EC through ACPI parsed code provided by BIOS
 101           tables. This option allows to access the EC directly without ACPI
 102           code being involved.
 103           Thus this option is a debug option that helps to write ACPI drivers
 104           and can be used to identify ACPI code or EC firmware bugs.
 105
 106 config ACPI_PROC_EVENT
 107         bool "Deprecated /proc/acpi/event support"
 108         depends on PROC_FS
 109         default y
 110         help
 111           A user-space daemon, acpid, typically reads /proc/acpi/event
 112           and handles all ACPI-generated events.
 113
 114           These events are now delivered to user-space either
 115           via the input layer or as netlink events.
 116
 117           This build option enables the old code for legacy
 118           user-space implementation.  After some time, this will
 119           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 120
 121           Say Y here to retain the old behaviour.  Say N if your
 122           user-space is newer than kernel 2.6.23 (September 2007).
 123
 124 config ACPI_AC
 125         tristate "AC Adapter"
 126         depends on X86
 127         select POWER_SUPPLY
 128         default y
 129         help
 130           This driver supports the AC Adapter object, which indicates
 131           whether a system is on AC or not.  If you have a system that can
 132           switch between A/C and battery, say Y.
 133
 134           To compile this driver as a module, choose M here:
 135           the module will be called ac.
 136
 137 config ACPI_BATTERY
 138         tristate "Battery"
 139         depends on X86
 140         select POWER_SUPPLY
 141         default y
 142         help
 143           This driver adds support for battery information through
 144           /proc/acpi/battery. If you have a mobile system with a battery,
 145           say Y.
 146
 147           To compile this driver as a module, choose M here:
 148           the module will be called battery.
 149
 150 config ACPI_BUTTON
 151         tristate "Button"
 152         depends on INPUT
 153         default y
 154         help
 155           This driver handles events on the power, sleep, and lid buttons.
 156           A daemon reads /proc/acpi/event and perform user-defined actions
 157           such as shutting down the system.  This is necessary for
 158           software-controlled poweroff.
 159
 160           To compile this driver as a module, choose M here:
 161           the module will be called button.
 162
 163 config ACPI_VIDEO
 164         tristate "Video"
 165         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 166         depends on INPUT
 167         select THERMAL
 168         help
 169           This driver implements the ACPI Extensions For Display Adapters
 170           for integrated graphics devices on motherboard, as specified in
 171           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 172           such as defining the video POST device, retrieving EDID information,
 173           and setting up a video output.
 174
 175           To compile this driver as a module, choose M here:
 176           the module will be called video.
 177
 178 config ACPI_FAN
 179         tristate "Fan"
 180         select THERMAL
 181         default y
 182         help
 183           This driver supports ACPI fan devices, allowing user-mode
 184           applications to perform basic fan control (on, off, status).
 185
 186           To compile this driver as a module, choose M here:
 187           the module will be called fan.
 188
 189 config ACPI_DOCK
 190         bool "Dock"
 191         depends on EXPERIMENTAL
 192         help
 193           This driver supports ACPI-controlled docking stations and removable
 194           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 195
 196 config ACPI_PROCESSOR
 197         tristate "Processor"
 198         select THERMAL
 199         select CPU_IDLE
 200         default y
 201         help
 202           This driver installs ACPI as the idle handler for Linux and uses
 203           ACPI C2 and C3 processor states to save power on systems that
 204           support it.  It is required by several flavors of cpufreq
 205           performance-state drivers.
 206
 207           To compile this driver as a module, choose M here:
 208           the module will be called processor.
 209 config ACPI_IPMI
 210         tristate "IPMI"
 211         depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER
 212         default n
 213         help
 214           This driver enables the ACPI to access the BMC controller. And it
 215           uses the IPMI request/response message to communicate with BMC
 216           controller, which can be found on on the server.
 217
 218           To compile this driver as a module, choose M here:
 219           the module will be called as acpi_ipmi.
 220
 221 config ACPI_HOTPLUG_CPU
 222         bool
 223         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 224         select ACPI_CONTAINER
 225         default y
 226
 227 config ACPI_PROCESSOR_AGGREGATOR
 228         tristate "Processor Aggregator"
 229         depends on ACPI_PROCESSOR
 230         depends on EXPERIMENTAL
 231         depends on X86
 232         help
 233           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 234           specific processor configuration and control that applies to all
 235           processors in the platform. Currently only logical processor idling
 236           is defined, which is to reduce power consumption. This driver
 237           supports the new device.
 238
 239 config ACPI_THERMAL
 240         tristate "Thermal Zone"
 241         depends on ACPI_PROCESSOR
 242         select THERMAL
 243         default y
 244         help
 245           This driver supports ACPI thermal zones.  Most mobile and
 246           some desktop systems support ACPI thermal zones.  It is HIGHLY
 247           recommended that this option be enabled, as your processor(s)
 248           may be damaged without it.
 249
 250           To compile this driver as a module, choose M here:
 251           the module will be called thermal.
 252
 253 config ACPI_NUMA
 254         bool "NUMA support"
 255         depends on NUMA
 256         depends on (X86 || IA64)
 257         default y if IA64_GENERIC || IA64_SGI_SN2
 258
 259 config ACPI_CUSTOM_DSDT_FILE
 260         string "Custom DSDT Table file to include"
 261         default ""
 262         depends on !STANDALONE
 263         help
 264           This option supports a custom DSDT by linking it into the kernel.
 265           See Documentation/acpi/dsdt-override.txt
 266
 267           Enter the full path name to the file which includes the AmlCode
 268           declaration.
 269
 270           If unsure, don't enter a file name.
 271
 272 config ACPI_CUSTOM_DSDT
 273         bool
 274         default ACPI_CUSTOM_DSDT_FILE != ""
 275
 276 config ACPI_BLACKLIST_YEAR
 277         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 278         default 0
 279         help
 280           Enter a 4-digit year, e.g., 2001, to disable ACPI by default
 281           on platforms with DMI BIOS date before January 1st that year.
 282           "acpi=force" can be used to override this mechanism.
 283
 284           Enter 0 to disable this mechanism and allow ACPI to
 285           run by default no matter what the year.  (default)
 286
 287 config ACPI_DEBUG
 288         bool "Debug Statements"
 289         default n
 290         help
 291           The ACPI subsystem can produce debug output.  Saying Y enables this
 292           output and increases the kernel size by around 50K.
 293
 294           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 295           parameters documented in Documentation/acpi/debug.txt and
 296           Documentation/kernel-parameters.txt to control the type and
 297           amount of debug output.
 298
 299 config ACPI_DEBUG_FUNC_TRACE
 300         bool "Additionally enable ACPI function tracing"
 301         default n
 302         depends on ACPI_DEBUG
 303         help
 304           ACPI Debug Statements slow down ACPI processing. Function trace
 305           is about half of the penalty and is rarely useful.
 306
 307 config ACPI_PCI_SLOT
 308         tristate "PCI slot detection driver"
 309         depends on SYSFS
 310         default n
 311         help
 312           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 313           slots in the system.  This can help correlate PCI bus addresses,
 314           i.e., segment/bus/device/function tuples, with physical slots in
 315           the system.  If you are unsure, say N.
 316
 317           To compile this driver as a module, choose M here:
 318           the module will be called pci_slot.
 319
 320 config X86_PM_TIMER
 321         bool "Power Management Timer Support" if EMBEDDED
 322         depends on X86
 323         default y
 324         help
 325           The Power Management Timer is available on all ACPI-capable,
 326           in most cases even if ACPI is unusable or blacklisted.
 327
 328           This timing source is not affected by power management features
 329           like aggressive processor idling, throttling, frequency and/or
 330           voltage scaling, unlike the commonly used Time Stamp Counter
 331           (TSC) timing source.
 332
 333           You should nearly always say Y here because many modern
 334           systems require this timer.
 335
 336 config ACPI_CONTAINER
 337         tristate "Container and Module Devices (EXPERIMENTAL)"
 338         depends on EXPERIMENTAL
 339         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 340         help
 341           This driver supports ACPI Container and Module devices (IDs
 342           ACPI0004, PNP0A05, and PNP0A06).
 343
 344           This helps support hotplug of nodes, CPUs, and memory.
 345
 346           To compile this driver as a module, choose M here:
 347           the module will be called container.
 348
 349 config ACPI_HOTPLUG_MEMORY
 350         tristate "Memory Hotplug"
 351         depends on MEMORY_HOTPLUG
 352         default n
 353         help
 354           This driver supports ACPI memory hotplug.  The driver
 355           fields notifications on ACPI memory devices (PNP0C80),
 356           which represent memory ranges that may be onlined or
 357           offlined during runtime.
 358
 359           If your hardware and firmware do not support adding or
 360           removing memory devices at runtime, you need not enable
 361           this driver.
 362
 363           To compile this driver as a module, choose M here:
 364           the module will be called acpi_memhotplug.
 365
 366 config ACPI_SBS
 367         tristate "Smart Battery System"
 368         depends on X86
 369         select POWER_SUPPLY
 370         help
 371           This driver supports the Smart Battery System, another
 372           type of access to battery information, found on some laptops.
 373
 374           To compile this driver as a module, choose M here:
 375           the modules will be called sbs and sbshc.
 376
 377 config ACPI_HED
 378         tristate "Hardware Error Device"
 379         help
 380           This driver supports the Hardware Error Device (PNP0C33),
 381           which is used to report some hardware errors notified via
 382           SCI, mainly the corrected errors.
 383
 384 source "drivers/acpi/apei/Kconfig"
 385
 386 endif   # ACPI