drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menuconfig ACPI
   6         bool "ACPI (Advanced Configuration and Power Interface) Support"
   7         depends on !X86_VISWS
   8         depends on !IA64_HP_SIM
   9         depends on IA64 || X86
  10         depends on PCI
  11         depends on PM
  12         select PNP
  13         default y
  14         ---help---
  15           Advanced Configuration and Power Interface (ACPI) support for
  16           Linux requires an ACPI compliant platform (hardware/firmware),
  17           and assumes the presence of OS-directed configuration and power
  18           management (OSPM) software.  This option will enlarge your
  19           kernel by about 70K.
  20
  21           Linux ACPI provides a robust functional replacement for several
  22           legacy configuration and power management interfaces, including
  23           the Plug-and-Play BIOS specification (PnP BIOS), the
  24           MultiProcessor Specification (MPS), and the Advanced Power
  25           Management (APM) specification.  If both ACPI and APM support
  26           are configured, whichever is loaded first shall be used.
  27
  28           The ACPI SourceForge project contains the latest source code,
  29           documentation, tools, mailing list subscription, and other
  30           information.  This project is available at:
  31           <http://sourceforge.net/projects/acpi>
  32
  33           Linux support for ACPI is based on Intel Corporation's ACPI
  34           Component Architecture (ACPI CA).  For more information see:
  35           <http://developer.intel.com/technology/iapc/acpi>
  36
  37           ACPI is an open industry specification co-developed by Compaq,
  38           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  39           available at:
  40           <http://www.acpi.info>
  41
  42 if ACPI
  43
  44 config ACPI_SLEEP
  45         bool
  46         depends on PM_SLEEP
  47         default y
  48
  49 config ACPI_PROCFS
  50         bool "Deprecated /proc/acpi files"
  51         depends on PROC_FS
  52         ---help---
  53           For backwards compatibility, this option allows
  54           deprecated /proc/acpi/ files to exist, even when
  55           they have been replaced by functions in /sys.
  56           The deprecated files (and their replacements) include:
  57
  58           /proc/acpi/sleep (/sys/power/state)
  59           /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
  60           /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  61           /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  62           /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  63           /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  64
  65           This option has no effect on /proc/acpi/ files
  66           and functions which do not yet exist in /sys.
  67
  68           Say N to delete /proc/acpi/ files that have moved to /sys/
  69 config ACPI_PROCFS_POWER
  70         bool "Deprecated power /proc/acpi directories"
  71         depends on PROC_FS
  72         default y
  73         ---help---
  74           For backwards compatibility, this option allows
  75           deprecated power /proc/acpi/ directories to exist, even when
  76           they have been replaced by functions in /sys.
  77           The deprecated directories (and their replacements) include:
  78           /proc/acpi/battery/* (/sys/class/power_supply/*)
  79           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  80           This option has no effect on /proc/acpi/ directories
  81           and functions, which do not yet exist in /sys
  82
  83           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  84
  85 config ACPI_SYSFS_POWER
  86         bool "Future power /sys interface"
  87         select POWER_SUPPLY
  88         default y
  89         ---help---
  90           Say N to disable power /sys interface
  91
  92 config ACPI_PROC_EVENT
  93         bool "Deprecated /proc/acpi/event support"
  94         depends on PROC_FS
  95         default y
  96         ---help---
  97           A user-space daemon, acpi, typically read /proc/acpi/event
  98           and handled all ACPI sub-system generated events.
  99
 100           These events are now delivered to user-space via
 101           either the input layer, or as netlink events.
 102
 103           This build option enables the old code for legacy
 104           user-space implementation.  After some time, this will
 105           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 106
 107           Say Y here to retain the old behaviour.  Say N if your
 108           user-space is newer than kernel 2.6.23 (September 2007).
 109
 110 config ACPI_AC
 111         tristate "AC Adapter"
 112         depends on X86
 113         default y
 114         help
 115           This driver adds support for the AC Adapter object, which indicates
 116           whether a system is on AC, or not. If you have a system that can
 117           switch between A/C and battery, say Y.
 118
 119 config ACPI_BATTERY
 120         tristate "Battery"
 121         depends on X86
 122         default y
 123         help
 124           This driver adds support for battery information through
 125           /proc/acpi/battery. If you have a mobile system with a battery,
 126           say Y.
 127
 128 config ACPI_BUTTON
 129         tristate "Button"
 130         depends on INPUT
 131         default y
 132         help
 133           This driver handles events on the power, sleep and lid buttons.
 134           A daemon reads /proc/acpi/event and perform user-defined actions
 135           such as shutting down the system.  This is necessary for
 136           software controlled poweroff.
 137
 138 config ACPI_VIDEO
 139         tristate "Video"
 140         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 141         depends on INPUT
 142         select THERMAL
 143         help
 144           This driver implement the ACPI Extensions For Display Adapters
 145           for integrated graphics devices on motherboard, as specified in
 146           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 147           control like defining the video POST device, retrieving EDID information
 148           or to setup a video output, etc.
 149           Note that this is an ref. implementation only.  It may or may not work
 150           for your integrated video device.
 151
 152 config ACPI_FAN
 153         tristate "Fan"
 154         select THERMAL
 155         default y
 156         help
 157           This driver adds support for ACPI fan devices, allowing user-mode
 158           applications to perform basic fan control (on, off, status).
 159
 160 config ACPI_DOCK
 161         tristate "Dock"
 162         depends on EXPERIMENTAL
 163         help
 164           This driver adds support for ACPI controlled docking stations
 165
 166 config ACPI_BAY
 167         tristate "Removable Drive Bay (EXPERIMENTAL)"
 168         depends on EXPERIMENTAL
 169         depends on ACPI_DOCK
 170         help
 171           This driver adds support for ACPI controlled removable drive
 172           bays such as the IBM ultrabay or the Dell Module Bay.
 173
 174 config ACPI_PROCESSOR
 175         tristate "Processor"
 176         select THERMAL
 177         default y
 178         help
 179           This driver installs ACPI as the idle handler for Linux, and uses
 180           ACPI C2 and C3 processor states to save power, on systems that
 181           support it.  It is required by several flavors of cpufreq
 182           Performance-state drivers.
 183
 184 config ACPI_HOTPLUG_CPU
 185         bool
 186         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 187         select ACPI_CONTAINER
 188         default y
 189
 190 config ACPI_THERMAL
 191         tristate "Thermal Zone"
 192         depends on ACPI_PROCESSOR
 193         select THERMAL
 194         default y
 195         help
 196           This driver adds support for ACPI thermal zones.  Most mobile and
 197           some desktop systems support ACPI thermal zones.  It is HIGHLY
 198           recommended that this option be enabled, as your processor(s)
 199           may be damaged without it.
 200
 201 config ACPI_NUMA
 202         bool "NUMA support"
 203         depends on NUMA
 204         depends on (X86 || IA64)
 205         default y if IA64_GENERIC || IA64_SGI_SN2
 206
 207 config ACPI_WMI
 208         tristate "WMI (EXPERIMENTAL)"
 209         depends on X86
 210         depends on EXPERIMENTAL
 211         help
 212           This driver adds support for the ACPI-WMI (Windows Management
 213           Instrumentation) mapper device (PNP0C14) found on some systems.
 214
 215           ACPI-WMI is a proprietary extension to ACPI to expose parts of the
 216           ACPI firmware to userspace - this is done through various vendor
 217           defined methods and data blocks in a PNP0C14 device, which are then
 218           made available for userspace to call.
 219
 220           The implementation of this in Linux currently only exposes this to
 221           other kernel space drivers.
 222
 223           This driver is a required dependency to build the firmware specific
 224           drivers needed on many machines, including Acer and HP laptops.
 225
 226           It is safe to enable this driver even if your DSDT doesn't define
 227           any ACPI-WMI devices.
 228
 229 config ACPI_ASUS
 230         tristate "ASUS/Medion Laptop Extras"
 231         depends on X86
 232         select BACKLIGHT_CLASS_DEVICE
 233         ---help---
 234           This driver provides support for extra features of ACPI-compatible
 235           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 236           support some Medion laptops (such as 9675 for example).  It makes all
 237           the extra buttons generate standard ACPI events that go through
 238           /proc/acpi/events, and (on some models) adds support for changing the
 239           display brightness and output, switching the LCD backlight on and off,
 240           and most importantly, allows you to blink those fancy LEDs intended
 241           for reporting mail and wireless status.
 242
 243           Note: display switching code is currently considered EXPERIMENTAL,
 244           toying with these values may even lock your machine.
 245
 246           All settings are changed via /proc/acpi/asus directory entries. Owner
 247           and group for these entries can be set with asus_uid and asus_gid
 248           parameters.
 249
 250           More information and a userspace daemon for handling the extra buttons
 251           at <http://sourceforge.net/projects/acpi4asus/>.
 252
 253           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 254           driver is still under development, so if your laptop is unsupported or
 255           something works not quite as expected, please use the mailing list
 256           available on the above page (acpi4asus-user@lists.sourceforge.net).
 257
 258           NOTE: This driver is deprecated and will probably be removed soon,
 259           use asus-laptop instead.
 260
 261 config ACPI_TOSHIBA
 262         tristate "Toshiba Laptop Extras"
 263         depends on X86
 264         select BACKLIGHT_CLASS_DEVICE
 265         ---help---
 266           This driver adds support for access to certain system settings
 267           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 268           their lack of a BIOS setup menu and APM support.
 269
 270           On these machines, all system configuration is handled through the
 271           ACPI.  This driver is required for access to controls not covered
 272           by the general ACPI drivers, such as LCD brightness, video output,
 273           etc.
 274
 275           This driver differs from the non-ACPI Toshiba laptop driver (located
 276           under "Processor type and features") in several aspects.
 277           Configuration is accessed by reading and writing text files in the
 278           /proc tree instead of by program interface to /dev.  Furthermore, no
 279           power management functions are exposed, as those are handled by the
 280           general ACPI drivers.
 281
 282           More information about this driver is available at
 283           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 284
 285           If you have a legacy free Toshiba laptop (such as the Libretto L1
 286           series), say Y.
 287
 288 config ACPI_CUSTOM_DSDT_FILE
 289         string "Custom DSDT Table file to include"
 290         default ""
 291         depends on !STANDALONE
 292         help
 293           This option supports a custom DSDT by linking it into the kernel.
 294           See Documentation/acpi/dsdt-override.txt
 295
 296           Enter the full path name to the file which includes the AmlCode
 297           declaration.
 298
 299           If unsure, don't enter a file name.
 300
 301 config ACPI_CUSTOM_DSDT
 302         bool
 303         default ACPI_CUSTOM_DSDT_FILE != ""
 304
 305 config ACPI_BLACKLIST_YEAR
 306         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 307         default 0
 308         help
 309           enter a 4-digit year, eg. 2001 to disable ACPI by default
 310           on platforms with DMI BIOS date before January 1st that year.
 311           "acpi=force" can be used to override this mechanism.
 312
 313           Enter 0 to disable this mechanism and allow ACPI to
 314           run by default no matter what the year.  (default)
 315
 316 config ACPI_DEBUG
 317         bool "Debug Statements"
 318         default n
 319         help
 320           The ACPI driver can optionally report errors with a great deal
 321           of verbosity. Saying Y enables these statements. This will increase
 322           your kernel size by around 50K.
 323
 324 config ACPI_DEBUG_FUNC_TRACE
 325         bool "Additionally enable ACPI function tracing"
 326         default n
 327         depends on ACPI_DEBUG
 328         help
 329           ACPI Debug Statements slow down ACPI processing. Function trace
 330           is about half of the penalty and is rarely useful.
 331
 332 config ACPI_EC
 333         bool
 334         default y
 335         help
 336           This driver is required on some systems for the proper operation of
 337           the battery and thermal drivers.  If you are compiling for a
 338           mobile system, say Y.
 339
 340 config ACPI_POWER
 341         bool
 342         default y
 343
 344 config ACPI_SYSTEM
 345         bool
 346         default y
 347         help
 348           This driver will enable your system to shut down using ACPI, and
 349           dump your ACPI DSDT table using /proc/acpi/dsdt.
 350
 351 config X86_PM_TIMER
 352         bool "Power Management Timer Support" if EMBEDDED
 353         depends on X86
 354         default y
 355         help
 356           The Power Management Timer is available on all ACPI-capable,
 357           in most cases even if ACPI is unusable or blacklisted.
 358
 359           This timing source is not affected by power management features
 360           like aggressive processor idling, throttling, frequency and/or
 361           voltage scaling, unlike the commonly used Time Stamp Counter
 362           (TSC) timing source.
 363
 364           You should nearly always say Y here because many modern
 365           systems require this timer.
 366
 367 config ACPI_CONTAINER
 368         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 369         depends on EXPERIMENTAL
 370         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 371          ---help---
 372           This allows _physical_ insertion and removal of CPUs and memory.
 373           This can be useful, for example, on NUMA machines that support
 374           ACPI based physical hotplug of nodes, or non-NUMA machines that
 375           support physical cpu/memory hot-plug.
 376
 377           If one selects "m", this driver can be loaded with
 378           "modprobe acpi_container".
 379
 380 config ACPI_HOTPLUG_MEMORY
 381         tristate "Memory Hotplug"
 382         depends on MEMORY_HOTPLUG
 383         default n
 384         help
 385           This driver adds supports for ACPI Memory Hotplug.  This driver
 386           provides support for fielding notifications on ACPI memory
 387           devices (PNP0C80) which represent memory ranges that may be
 388           onlined or offlined during runtime.
 389
 390           Enabling this driver assumes that your platform hardware
 391           and firmware have support for hot-plugging physical memory. If
 392           your system does not support physically adding or ripping out
 393           memory DIMMs at some platform defined granularity (individually
 394           or as a bank) at runtime, then you need not enable this driver.
 395
 396           If one selects "m," this driver can be loaded using the following
 397           command:
 398                 $>modprobe acpi_memhotplug
 399
 400 config ACPI_SBS
 401         tristate "Smart Battery System"
 402         depends on X86
 403         help
 404           This driver adds support for the Smart Battery System, another
 405           type of access to battery information, found on some laptops.
 406
 407 endif   # ACPI