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, whichever is loaded first shall be used.
  26
  27           The ACPI SourceForge project contains the latest source code,
  28           documentation, tools, mailing list subscription, and other
  29           information.  This project is available at:
  30           <http://sourceforge.net/projects/acpi>
  31
  32           Linux support for ACPI is based on Intel Corporation's ACPI
  33           Component Architecture (ACPI CA).  For more information see:
  34           <http://developer.intel.com/technology/iapc/acpi>
  35
  36           ACPI is an open industry specification co-developed by Compaq,
  37           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  38           available at:
  39           <http://www.acpi.info>
  40
  41 if ACPI
  42
  43 config ACPI_SLEEP
  44         bool
  45         depends on SUSPEND || HIBERNATION
  46         default y
  47
  48 config ACPI_PROCFS
  49         bool "Deprecated /proc/acpi files"
  50         depends on PROC_FS
  51         ---help---
  52           For backwards compatibility, this option allows
  53           deprecated /proc/acpi/ files to exist, even when
  54           they have been replaced by functions in /sys.
  55           The deprecated files (and their replacements) include:
  56
  57           /proc/acpi/sleep (/sys/power/state)
  58           /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
  59           /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  60           /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  61           /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  62           /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  63
  64           This option has no effect on /proc/acpi/ files
  65           and functions which do not yet exist in /sys.
  66
  67           Say N to delete /proc/acpi/ files that have moved to /sys/
  68 config ACPI_PROCFS_POWER
  69         bool "Deprecated power /proc/acpi directories"
  70         depends on PROC_FS
  71         default y
  72         ---help---
  73           For backwards compatibility, this option allows
  74           deprecated power /proc/acpi/ directories to exist, even when
  75           they have been replaced by functions in /sys.
  76           The deprecated directories (and their replacements) include:
  77           /proc/acpi/battery/* (/sys/class/power_supply/*)
  78           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  79           This option has no effect on /proc/acpi/ directories
  80           and functions, which do not yet exist in /sys
  81
  82           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  83
  84 config ACPI_SYSFS_POWER
  85         bool "Future power /sys interface"
  86         select POWER_SUPPLY
  87         default y
  88         ---help---
  89           Say N to disable power /sys interface
  90
  91 config ACPI_PROC_EVENT
  92         bool "Deprecated /proc/acpi/event support"
  93         depends on PROC_FS
  94         default y
  95         ---help---
  96           A user-space daemon, acpi, typically read /proc/acpi/event
  97           and handled all ACPI sub-system generated events.
  98
  99           These events are now delivered to user-space via
 100           either the input layer, or as netlink events.
 101
 102           This build option enables the old code for legacy
 103           user-space implementation.  After some time, this will
 104           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 105
 106           Say Y here to retain the old behaviour.  Say N if your
 107           user-space is newer than kernel 2.6.23 (September 2007).
 108
 109 config ACPI_AC
 110         tristate "AC Adapter"
 111         depends on X86
 112         default y
 113         help
 114           This driver adds support for the AC Adapter object, which indicates
 115           whether a system is on AC, or not. If you have a system that can
 116           switch between A/C and battery, say Y.
 117
 118 config ACPI_BATTERY
 119         tristate "Battery"
 120         depends on X86
 121         default y
 122         help
 123           This driver adds support for battery information through
 124           /proc/acpi/battery. If you have a mobile system with a battery,
 125           say Y.
 126
 127 config ACPI_BUTTON
 128         tristate "Button"
 129         depends on INPUT
 130         default y
 131         help
 132           This driver handles events on the power, sleep and lid buttons.
 133           A daemon reads /proc/acpi/event and perform user-defined actions
 134           such as shutting down the system.  This is necessary for
 135           software controlled poweroff.
 136
 137 config ACPI_VIDEO
 138         tristate "Video"
 139         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 140         depends on INPUT
 141         select THERMAL
 142         help
 143           This driver implement the ACPI Extensions For Display Adapters
 144           for integrated graphics devices on motherboard, as specified in
 145           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 146           control like defining the video POST device, retrieving EDID information
 147           or to setup a video output, etc.
 148           Note that this is an ref. implementation only.  It may or may not work
 149           for your integrated video device.
 150
 151 config ACPI_FAN
 152         tristate "Fan"
 153         select THERMAL
 154         default y
 155         help
 156           This driver adds support for ACPI fan devices, allowing user-mode
 157           applications to perform basic fan control (on, off, status).
 158
 159 config ACPI_DOCK
 160         bool "Dock"
 161         depends on EXPERIMENTAL
 162         help
 163           This driver adds support for ACPI controlled docking stations and removable
 164           drive bays such as the IBM ultrabay or the Dell Module Bay.
 165
 166 config ACPI_PROCESSOR
 167         tristate "Processor"
 168         select THERMAL
 169         default y
 170         help
 171           This driver installs ACPI as the idle handler for Linux, and uses
 172           ACPI C2 and C3 processor states to save power, on systems that
 173           support it.  It is required by several flavors of cpufreq
 174           Performance-state drivers.
 175
 176 config ACPI_HOTPLUG_CPU
 177         bool
 178         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 179         select ACPI_CONTAINER
 180         default y
 181
 182 config ACPI_THERMAL
 183         tristate "Thermal Zone"
 184         depends on ACPI_PROCESSOR
 185         select THERMAL
 186         default y
 187         help
 188           This driver adds support for ACPI thermal zones.  Most mobile and
 189           some desktop systems support ACPI thermal zones.  It is HIGHLY
 190           recommended that this option be enabled, as your processor(s)
 191           may be damaged without it.
 192
 193 config ACPI_NUMA
 194         bool "NUMA support"
 195         depends on NUMA
 196         depends on (X86 || IA64)
 197         default y if IA64_GENERIC || IA64_SGI_SN2
 198
 199 config ACPI_WMI
 200         tristate "WMI (EXPERIMENTAL)"
 201         depends on X86
 202         depends on EXPERIMENTAL
 203         help
 204           This driver adds support for the ACPI-WMI (Windows Management
 205           Instrumentation) mapper device (PNP0C14) found on some systems.
 206
 207           ACPI-WMI is a proprietary extension to ACPI to expose parts of the
 208           ACPI firmware to userspace - this is done through various vendor
 209           defined methods and data blocks in a PNP0C14 device, which are then
 210           made available for userspace to call.
 211
 212           The implementation of this in Linux currently only exposes this to
 213           other kernel space drivers.
 214
 215           This driver is a required dependency to build the firmware specific
 216           drivers needed on many machines, including Acer and HP laptops.
 217
 218           It is safe to enable this driver even if your DSDT doesn't define
 219           any ACPI-WMI devices.
 220
 221 config ACPI_ASUS
 222         tristate "ASUS/Medion Laptop Extras"
 223         depends on X86
 224         select BACKLIGHT_CLASS_DEVICE
 225         ---help---
 226           This driver provides support for extra features of ACPI-compatible
 227           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 228           support some Medion laptops (such as 9675 for example).  It makes all
 229           the extra buttons generate standard ACPI events that go through
 230           /proc/acpi/events, and (on some models) adds support for changing the
 231           display brightness and output, switching the LCD backlight on and off,
 232           and most importantly, allows you to blink those fancy LEDs intended
 233           for reporting mail and wireless status.
 234
 235           Note: display switching code is currently considered EXPERIMENTAL,
 236           toying with these values may even lock your machine.
 237
 238           All settings are changed via /proc/acpi/asus directory entries. Owner
 239           and group for these entries can be set with asus_uid and asus_gid
 240           parameters.
 241
 242           More information and a userspace daemon for handling the extra buttons
 243           at <http://sourceforge.net/projects/acpi4asus/>.
 244
 245           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 246           driver is still under development, so if your laptop is unsupported or
 247           something works not quite as expected, please use the mailing list
 248           available on the above page (acpi4asus-user@lists.sourceforge.net).
 249
 250           NOTE: This driver is deprecated and will probably be removed soon,
 251           use asus-laptop instead.
 252
 253 config ACPI_TOSHIBA
 254         tristate "Toshiba Laptop Extras"
 255         depends on X86 && INPUT
 256         select INPUT_POLLDEV
 257         select NET
 258         select RFKILL
 259         select BACKLIGHT_CLASS_DEVICE
 260         ---help---
 261           This driver adds support for access to certain system settings
 262           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 263           their lack of a BIOS setup menu and APM support.
 264
 265           On these machines, all system configuration is handled through the
 266           ACPI.  This driver is required for access to controls not covered
 267           by the general ACPI drivers, such as LCD brightness, video output,
 268           etc.
 269
 270           This driver differs from the non-ACPI Toshiba laptop driver (located
 271           under "Processor type and features") in several aspects.
 272           Configuration is accessed by reading and writing text files in the
 273           /proc tree instead of by program interface to /dev.  Furthermore, no
 274           power management functions are exposed, as those are handled by the
 275           general ACPI drivers.
 276
 277           More information about this driver is available at
 278           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 279
 280           If you have a legacy free Toshiba laptop (such as the Libretto L1
 281           series), say Y.
 282
 283 config ACPI_CUSTOM_DSDT_FILE
 284         string "Custom DSDT Table file to include"
 285         default ""
 286         depends on !STANDALONE
 287         help
 288           This option supports a custom DSDT by linking it into the kernel.
 289           See Documentation/acpi/dsdt-override.txt
 290
 291           Enter the full path name to the file which includes the AmlCode
 292           declaration.
 293
 294           If unsure, don't enter a file name.
 295
 296 config ACPI_CUSTOM_DSDT
 297         bool
 298         default ACPI_CUSTOM_DSDT_FILE != ""
 299
 300 config ACPI_BLACKLIST_YEAR
 301         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 302         default 0
 303         help
 304           enter a 4-digit year, eg. 2001 to disable ACPI by default
 305           on platforms with DMI BIOS date before January 1st that year.
 306           "acpi=force" can be used to override this mechanism.
 307
 308           Enter 0 to disable this mechanism and allow ACPI to
 309           run by default no matter what the year.  (default)
 310
 311 config ACPI_DEBUG
 312         bool "Debug Statements"
 313         default n
 314         help
 315           The ACPI subsystem can produce debug output.  Saying Y enables this
 316           output and increases the kernel size by around 50K.
 317
 318           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 319           parameters documented in Documentation/acpi/debug.txt and
 320           Documentation/kernel-parameters.txt to control the type and
 321           amount of debug output.
 322
 323 config ACPI_DEBUG_FUNC_TRACE
 324         bool "Additionally enable ACPI function tracing"
 325         default n
 326         depends on ACPI_DEBUG
 327         help
 328           ACPI Debug Statements slow down ACPI processing. Function trace
 329           is about half of the penalty and is rarely useful.
 330
 331 config ACPI_PCI_SLOT
 332         tristate "PCI slot detection driver"
 333         default n
 334         help
 335           This driver will attempt to discover all PCI slots in your system,
 336           and creates entries in /sys/bus/pci/slots/. This feature can
 337           help you correlate PCI bus addresses with the physical geography
 338           of your slots. If you are unsure, say N.
 339
 340 config ACPI_SYSTEM
 341         bool
 342         default y
 343         help
 344           This driver will enable your system to shut down using ACPI, and
 345           dump your ACPI DSDT table using /proc/acpi/dsdt.
 346
 347 config X86_PM_TIMER
 348         bool "Power Management Timer Support" if EMBEDDED
 349         depends on X86
 350         default y
 351         help
 352           The Power Management Timer is available on all ACPI-capable,
 353           in most cases even if ACPI is unusable or blacklisted.
 354
 355           This timing source is not affected by power management features
 356           like aggressive processor idling, throttling, frequency and/or
 357           voltage scaling, unlike the commonly used Time Stamp Counter
 358           (TSC) timing source.
 359
 360           You should nearly always say Y here because many modern
 361           systems require this timer.
 362
 363 config ACPI_CONTAINER
 364         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 365         depends on EXPERIMENTAL
 366         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 367          ---help---
 368           This allows _physical_ insertion and removal of CPUs and memory.
 369           This can be useful, for example, on NUMA machines that support
 370           ACPI based physical hotplug of nodes, or non-NUMA machines that
 371           support physical cpu/memory hot-plug.
 372
 373           If one selects "m", this driver can be loaded with
 374           "modprobe acpi_container".
 375
 376 config ACPI_HOTPLUG_MEMORY
 377         tristate "Memory Hotplug"
 378         depends on MEMORY_HOTPLUG
 379         default n
 380         help
 381           This driver adds supports for ACPI Memory Hotplug.  This driver
 382           provides support for fielding notifications on ACPI memory
 383           devices (PNP0C80) which represent memory ranges that may be
 384           onlined or offlined during runtime.
 385
 386           Enabling this driver assumes that your platform hardware
 387           and firmware have support for hot-plugging physical memory. If
 388           your system does not support physically adding or ripping out
 389           memory DIMMs at some platform defined granularity (individually
 390           or as a bank) at runtime, then you need not enable this driver.
 391
 392           If one selects "m," this driver can be loaded using the following
 393           command:
 394                 $>modprobe acpi_memhotplug
 395
 396 config ACPI_SBS
 397         tristate "Smart Battery System"
 398         depends on X86
 399         help
 400           This driver adds support for the Smart Battery System, another
 401           type of access to battery information, found on some laptops.
 402
 403 endif   # ACPI