drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menuconfig ACPI
   6         bool "ACPI Support (Advanced Configuration and Power Interface) Support"
   7         depends on !X86_NUMAQ
   8         depends on !X86_VISWS
   9         depends on !IA64_HP_SIM
  10         depends on IA64 || X86
  11         depends on PCI
  12         depends on PM
  13         select PNP
  14         default y
  15         ---help---
  16           Advanced Configuration and Power Interface (ACPI) support for
  17           Linux requires an ACPI compliant platform (hardware/firmware),
  18           and assumes the presence of OS-directed configuration and power
  19           management (OSPM) software.  This option will enlarge your
  20           kernel by about 70K.
  21
  22           Linux ACPI provides a robust functional replacement for several
  23           legacy configuration and power management interfaces, including
  24           the Plug-and-Play BIOS specification (PnP BIOS), the
  25           MultiProcessor Specification (MPS), and the Advanced Power
  26           Management (APM) specification.  If both ACPI and APM support
  27           are configured, whichever is loaded first shall be used.
  28
  29           The ACPI SourceForge project contains the latest source code,
  30           documentation, tools, mailing list subscription, and other
  31           information.  This project is available at:
  32           <http://sourceforge.net/projects/acpi>
  33
  34           Linux support for ACPI is based on Intel Corporation's ACPI
  35           Component Architecture (ACPI CA).  For more information see:
  36           <http://developer.intel.com/technology/iapc/acpi>
  37
  38           ACPI is an open industry specification co-developed by Compaq,
  39           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  40           available at:
  41           <http://www.acpi.info>
  42
  43 if ACPI
  44
  45 config ACPI_SLEEP
  46         bool
  47         depends on PM_SLEEP
  48         default y
  49
  50 config ACPI_PROCFS
  51         bool "Deprecated /proc/acpi files"
  52         depends on PROC_FS
  53         ---help---
  54           For backwards compatibility, this option allows
  55           depricated /proc/acpi/ files to exist, even when
  56           they have been replaced by functions in /sys.
  57           The deprecated files (and their replacements) include:
  58
  59           /proc/acpi/sleep (/sys/power/state)
  60           /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
  61           /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  62           /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  63           /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  64           /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  65
  66           This option has no effect on /proc/acpi/ files
  67           and functions which do not yet exist in /sys.
  68
  69           Say N to delete /proc/acpi/ files that have moved to /sys/
  70
  71 config ACPI_PROC_EVENT
  72         bool "Deprecated /proc/acpi/event support"
  73         depends on PROC_FS
  74         ---help---
  75           A user-space daemon, acpi, typically read /proc/acpi/event
  76           and handled all ACPI sub-system generated events.
  77
  78           These events are now delivered to user-space via
  79           either the input layer, or as netlink events.
  80
  81           This build option enables the old code for for legacy
  82           user-space implementation.  After some time, this will
  83           be moved under CONFIG_ACPI_PROCFS, and then deleted.
  84
  85 config ACPI_AC
  86         tristate "AC Adapter"
  87         depends on X86
  88         default y
  89         help
  90           This driver adds support for the AC Adapter object, which indicates
  91           whether a system is on AC, or not. If you have a system that can
  92           switch between A/C and battery, say Y.
  93
  94 config ACPI_BATTERY
  95         tristate "Battery"
  96         depends on X86
  97         default y
  98         help
  99           This driver adds support for battery information through
 100           /proc/acpi/battery. If you have a mobile system with a battery,
 101           say Y.
 102
 103 config ACPI_BUTTON
 104         tristate "Button"
 105         depends on INPUT
 106         default y
 107         help
 108           This driver handles events on the power, sleep and lid buttons.
 109           A daemon reads /proc/acpi/event and perform user-defined actions
 110           such as shutting down the system.  This is necessary for
 111           software controlled poweroff.
 112
 113 config ACPI_VIDEO
 114         tristate "Video"
 115         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 116         help
 117           This driver implement the ACPI Extensions For Display Adapters
 118           for integrated graphics devices on motherboard, as specified in
 119           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 120           control like defining the video POST device, retrieving EDID information
 121           or to setup a video output, etc.
 122           Note that this is an ref. implementation only.  It may or may not work
 123           for your integrated video device.
 124
 125 config ACPI_FAN
 126         tristate "Fan"
 127         default y
 128         help
 129           This driver adds support for ACPI fan devices, allowing user-mode
 130           applications to perform basic fan control (on, off, status).
 131
 132 config ACPI_DOCK
 133         tristate "Dock"
 134         depends on EXPERIMENTAL
 135         help
 136           This driver adds support for ACPI controlled docking stations
 137
 138 config ACPI_BAY
 139         tristate "Removable Drive Bay (EXPERIMENTAL)"
 140         depends on EXPERIMENTAL
 141         depends on ACPI_DOCK
 142         help
 143           This driver adds support for ACPI controlled removable drive
 144           bays such as the IBM ultrabay or the Dell Module Bay.
 145
 146 config ACPI_PROCESSOR
 147         tristate "Processor"
 148         default y
 149         help
 150           This driver installs ACPI as the idle handler for Linux, and uses
 151           ACPI C2 and C3 processor states to save power, on systems that
 152           support it.  It is required by several flavors of cpufreq
 153           Performance-state drivers.
 154
 155 config ACPI_HOTPLUG_CPU
 156         bool
 157         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 158         select ACPI_CONTAINER
 159         default y
 160
 161 config ACPI_THERMAL
 162         tristate "Thermal Zone"
 163         depends on ACPI_PROCESSOR
 164         default y
 165         help
 166           This driver adds support for ACPI thermal zones.  Most mobile and
 167           some desktop systems support ACPI thermal zones.  It is HIGHLY
 168           recommended that this option be enabled, as your processor(s)
 169           may be damaged without it.
 170
 171 config ACPI_NUMA
 172         bool "NUMA support"
 173         depends on NUMA
 174         depends on (X86 || IA64)
 175         default y if IA64_GENERIC || IA64_SGI_SN2
 176
 177 config ACPI_ASUS
 178         tristate "ASUS/Medion Laptop Extras"
 179         depends on X86
 180         select BACKLIGHT_CLASS_DEVICE
 181         ---help---
 182           This driver provides support for extra features of ACPI-compatible
 183           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 184           support some Medion laptops (such as 9675 for example).  It makes all
 185           the extra buttons generate standard ACPI events that go through
 186           /proc/acpi/events, and (on some models) adds support for changing the
 187           display brightness and output, switching the LCD backlight on and off,
 188           and most importantly, allows you to blink those fancy LEDs intended
 189           for reporting mail and wireless status.
 190
 191           Note: display switching code is currently considered EXPERIMENTAL,
 192           toying with these values may even lock your machine.
 193
 194           All settings are changed via /proc/acpi/asus directory entries. Owner
 195           and group for these entries can be set with asus_uid and asus_gid
 196           parameters.
 197
 198           More information and a userspace daemon for handling the extra buttons
 199           at <http://sourceforge.net/projects/acpi4asus/>.
 200
 201           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 202           driver is still under development, so if your laptop is unsupported or
 203           something works not quite as expected, please use the mailing list
 204           available on the above page (acpi4asus-user@lists.sourceforge.net).
 205
 206           NOTE: This driver is deprecated and will probably be removed soon,
 207           use asus-laptop instead.
 208
 209 config ACPI_TOSHIBA
 210         tristate "Toshiba Laptop Extras"
 211         depends on X86
 212         select BACKLIGHT_CLASS_DEVICE
 213         ---help---
 214           This driver adds support for access to certain system settings
 215           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 216           their lack of a BIOS setup menu and APM support.
 217
 218           On these machines, all system configuration is handled through the
 219           ACPI.  This driver is required for access to controls not covered
 220           by the general ACPI drivers, such as LCD brightness, video output,
 221           etc.
 222
 223           This driver differs from the non-ACPI Toshiba laptop driver (located
 224           under "Processor type and features") in several aspects.
 225           Configuration is accessed by reading and writing text files in the
 226           /proc tree instead of by program interface to /dev.  Furthermore, no
 227           power management functions are exposed, as those are handled by the
 228           general ACPI drivers.
 229
 230           More information about this driver is available at
 231           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 232
 233           If you have a legacy free Toshiba laptop (such as the Libretto L1
 234           series), say Y.
 235
 236 config ACPI_CUSTOM_DSDT
 237         bool "Include Custom DSDT"
 238         depends on !STANDALONE
 239         default n
 240         help
 241           This option is to load a custom ACPI DSDT
 242           If you don't know what that is, say N.
 243
 244 config ACPI_CUSTOM_DSDT_FILE
 245         string "Custom DSDT Table file to include"
 246         depends on ACPI_CUSTOM_DSDT
 247         default ""
 248         help
 249           Enter the full path name to the file which includes the AmlCode
 250           declaration.
 251
 252 config ACPI_BLACKLIST_YEAR
 253         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 254         default 0
 255         help
 256           enter a 4-digit year, eg. 2001 to disable ACPI by default
 257           on platforms with DMI BIOS date before January 1st that year.
 258           "acpi=force" can be used to override this mechanism.
 259
 260           Enter 0 to disable this mechanism and allow ACPI to
 261           run by default no matter what the year.  (default)
 262
 263 config ACPI_DEBUG
 264         bool "Debug Statements"
 265         default n
 266         help
 267           The ACPI driver can optionally report errors with a great deal
 268           of verbosity. Saying Y enables these statements. This will increase
 269           your kernel size by around 50K.
 270
 271 config ACPI_DEBUG_FUNC_TRACE
 272         bool "Additionally enable ACPI function tracing"
 273         default n
 274         depends on ACPI_DEBUG
 275         help
 276           ACPI Debug Statements slow down ACPI processing. Function trace
 277           is about half of the penalty and is rarely useful.
 278
 279 config ACPI_EC
 280         bool
 281         default y
 282         help
 283           This driver is required on some systems for the proper operation of
 284           the battery and thermal drivers.  If you are compiling for a
 285           mobile system, say Y.
 286
 287 config ACPI_POWER
 288         bool
 289         default y
 290
 291 config ACPI_SYSTEM
 292         bool
 293         default y
 294         help
 295           This driver will enable your system to shut down using ACPI, and
 296           dump your ACPI DSDT table using /proc/acpi/dsdt.
 297
 298 config X86_PM_TIMER
 299         bool "Power Management Timer Support" if EMBEDDED
 300         depends on X86
 301         default y
 302         help
 303           The Power Management Timer is available on all ACPI-capable,
 304           in most cases even if ACPI is unusable or blacklisted.
 305
 306           This timing source is not affected by power management features
 307           like aggressive processor idling, throttling, frequency and/or
 308           voltage scaling, unlike the commonly used Time Stamp Counter
 309           (TSC) timing source.
 310
 311           You should nearly always say Y here because many modern
 312           systems require this timer.
 313
 314 config ACPI_CONTAINER
 315         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 316         depends on EXPERIMENTAL
 317         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 318          ---help---
 319           This allows _physical_ insertion and removal of CPUs and memory.
 320           This can be useful, for example, on NUMA machines that support
 321           ACPI based physical hotplug of nodes, or non-NUMA machines that
 322           support physical cpu/memory hot-plug.
 323
 324           If one selects "m", this driver can be loaded with
 325           "modprobe acpi_container".
 326
 327 config ACPI_HOTPLUG_MEMORY
 328         tristate "Memory Hotplug"
 329         depends on MEMORY_HOTPLUG
 330         default n
 331         help
 332           This driver adds supports for ACPI Memory Hotplug.  This driver
 333           provides support for fielding notifications on ACPI memory
 334           devices (PNP0C80) which represent memory ranges that may be
 335           onlined or offlined during runtime.
 336
 337           Enabling this driver assumes that your platform hardware
 338           and firmware have support for hot-plugging physical memory. If
 339           your system does not support physically adding or ripping out
 340           memory DIMMs at some platform defined granularity (individually
 341           or as a bank) at runtime, then you need not enable this driver.
 342
 343           If one selects "m," this driver can be loaded using the following
 344           command:
 345                 $>modprobe acpi_memhotplug
 346
 347 config ACPI_SBS
 348         tristate "Smart Battery System (EXPERIMENTAL)"
 349         depends on X86
 350         depends on EXPERIMENTAL
 351         help
 352           This driver adds support for the Smart Battery System.
 353           A "Smart Battery" is quite old and quite rare compared
 354           to today's ACPI "Control Method" battery.
 355
 356 endif   # ACPI