drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menu "ACPI (Advanced Configuration and Power Interface) Support"
   6         depends on PM
   7         depends on !X86_VISWS
   8         depends on !IA64_HP_SIM
   9         depends on IA64 || X86
  10
  11 config ACPI
  12         bool "ACPI Support"
  13         depends on IA64 || X86
  14
  15         default y
  16         ---help---
  17           Advanced Configuration and Power Interface (ACPI) support for
  18           Linux requires an ACPI compliant platform (hardware/firmware),
  19           and assumes the presence of OS-directed configuration and power
  20           management (OSPM) software.  This option will enlarge your
  21           kernel by about 70K.
  22
  23           Linux ACPI provides a robust functional replacement for several
  24           legacy configuration and power management interfaces, including
  25           the Plug-and-Play BIOS specification (PnP BIOS), the
  26           MultiProcessor Specification (MPS), and the Advanced Power
  27           Management (APM) specification.  If both ACPI and APM support
  28           are configured, whichever is loaded first shall be used.
  29
  30           The ACPI SourceForge project contains the latest source code,
  31           documentation, tools, mailing list subscription, and other
  32           information.  This project is available at:
  33           <http://sourceforge.net/projects/acpi>
  34
  35           Linux support for ACPI is based on Intel Corporation's ACPI
  36           Component Architecture (ACPI CA).  For more information see:
  37           <http://developer.intel.com/technology/iapc/acpi>
  38
  39           ACPI is an open industry specification co-developed by Compaq,
  40           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  41           available at:
  42           <http://www.acpi.info>
  43
  44 if ACPI
  45
  46 config ACPI_BOOT
  47         bool
  48         default y
  49
  50 config ACPI_INTERPRETER
  51         bool
  52         default y
  53
  54 if ACPI_INTERPRETER
  55
  56 config ACPI_SLEEP
  57         bool "Sleep States (EXPERIMENTAL)"
  58         depends on X86 && (!SMP || SUSPEND_SMP)
  59         depends on EXPERIMENTAL && PM
  60         default y
  61         ---help---
  62           This option adds support for ACPI suspend states.
  63
  64           With this option, you will be able to put the system "to sleep".
  65           Sleep states are low power states for the system and devices. All
  66           of the system operating state is saved to either memory or disk
  67           (depending on the state), to allow the system to resume operation
  68           quickly at your request.
  69
  70           Although this option sounds really nifty, barely any of the device
  71           drivers have been converted to the new driver model and hence few
  72           have proper power management support.
  73
  74           This option is not recommended for anyone except those doing driver
  75           power management development.
  76
  77 config ACPI_SLEEP_PROC_FS
  78         bool
  79         depends on ACPI_SLEEP && PROC_FS
  80         default y
  81
  82 config ACPI_SLEEP_PROC_SLEEP
  83         bool "/proc/acpi/sleep (deprecated)"
  84         depends on ACPI_SLEEP_PROC_FS
  85         default n
  86         ---help---
  87           Create /proc/acpi/sleep
  88           Deprecated by /sys/power/state
  89
  90 config ACPI_AC
  91         tristate "AC Adapter"
  92         depends on X86
  93         default m
  94         help
  95           This driver adds support for the AC Adapter object, which indicates
  96           whether a system is on AC, or not.  Typically, only mobile systems
  97           have this object, since desktops are always on AC.
  98
  99 config ACPI_BATTERY
 100         tristate "Battery"
 101         depends on X86
 102         default m
 103         help
 104           This driver adds support for battery information through
 105           /proc/acpi/battery. If you have a mobile system with a battery,
 106           say Y.
 107
 108 config ACPI_BUTTON
 109         tristate "Button"
 110         default m
 111         help
 112           This driver registers for events based on buttons, such as the
 113           power, sleep, and lid switch.  In the future, a daemon will read
 114           /proc/acpi/event and perform user-defined actions such as shutting
 115           down the system.  Until then, you can cat it, and see output when
 116           a button is pressed.
 117
 118 config ACPI_VIDEO
 119         tristate "Video"
 120         depends on EXPERIMENTAL
 121         default m
 122         help
 123           This driver implement the ACPI Extensions For Display Adapters
 124           for integrated graphics devices on motherboard, as specified in
 125           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 126           control like defining the video POST device, retrieving EDID information
 127           or to setup a video output, etc.
 128           Note that this is an ref. implementation only.  It may or may not work
 129           for your integrated video device.
 130
 131 config ACPI_HOTKEY
 132         tristate "Generic Hotkey"
 133         depends on ACPI_INTERPRETER
 134         depends on EXPERIMENTAL
 135         depends on !IA64_SGI_SN
 136         default m
 137         help
 138         ACPI generic hotkey
 139
 140 config ACPI_FAN
 141         tristate "Fan"
 142         default m
 143         help
 144           This driver adds support for ACPI fan devices, allowing user-mode
 145           applications to perform basic fan control (on, off, status).
 146
 147 config ACPI_PROCESSOR
 148         tristate "Processor"
 149         default m
 150         help
 151           This driver installs ACPI as the idle handler for Linux, and uses
 152           ACPI C2 and C3 processor states to save power, on systems that
 153           support it.
 154
 155 config ACPI_HOTPLUG_CPU
 156         bool "Processor Hotplug (EXPERIMENTAL)"
 157         depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
 158         select ACPI_CONTAINER
 159         default n
 160          ---help---
 161          Select this option if your platform support physical CPU hotplug.
 162
 163 config ACPI_THERMAL
 164         tristate "Thermal Zone"
 165         depends on ACPI_PROCESSOR
 166         default m
 167         help
 168           This driver adds support for ACPI thermal zones.  Most mobile and
 169           some desktop systems support ACPI thermal zones.  It is HIGHLY
 170           recommended that this option be enabled, as your processor(s)
 171           may be damaged without it.
 172
 173 config ACPI_NUMA
 174         bool "NUMA support"
 175         depends on NUMA
 176         depends on (IA64 || X86_64)
 177         default y if IA64_GENERIC || IA64_SGI_SN2
 178
 179 config ACPI_ASUS
 180         tristate "ASUS/Medion Laptop Extras"
 181         depends on X86
 182         default m
 183         ---help---
 184           This driver provides support for extra features of ACPI-compatible
 185           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 186           support some Medion laptops (such as 9675 for example).  It makes all
 187           the extra buttons generate standard ACPI events that go through
 188           /proc/acpi/events, and (on some models) adds support for changing the
 189           display brightness and output, switching the LCD backlight on and off,
 190           and most importantly, allows you to blink those fancy LEDs intended
 191           for reporting mail and wireless status.
 192
 193           Note: display switching code is currently considered EXPERIMENTAL,
 194           toying with these values may even lock your machine.
 195
 196           All settings are changed via /proc/acpi/asus directory entries. Owner
 197           and group for these entries can be set with asus_uid and asus_gid
 198           parameters.
 199
 200           More information and a userspace daemon for handling the extra buttons
 201           at <http://sourceforge.net/projects/acpi4asus/>.
 202
 203           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 204           driver is still under development, so if your laptop is unsupported or
 205           something works not quite as expected, please use the mailing list
 206           available on the above page (acpi4asus-user@lists.sourceforge.net)
 207
 208 config ACPI_IBM
 209         tristate "IBM ThinkPad Laptop Extras"
 210         depends on X86
 211         default m
 212         ---help---
 213           This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
 214           support for Fn-Fx key combinations, Bluetooth control, video
 215           output switching, ThinkLight control, UltraBay eject and more.
 216           For more information about this driver see <file:Documentation/ibm-acpi.txt>
 217           and <http://ibm-acpi.sf.net/> .
 218
 219           If you have an IBM ThinkPad laptop, say Y or M here.
 220
 221 config ACPI_TOSHIBA
 222         tristate "Toshiba Laptop Extras"
 223         depends on X86
 224         default m
 225         ---help---
 226           This driver adds support for access to certain system settings
 227           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 228           their lack of a BIOS setup menu and APM support.
 229
 230           On these machines, all system configuration is handled through the
 231           ACPI.  This driver is required for access to controls not covered
 232           by the general ACPI drivers, such as LCD brightness, video output,
 233           etc.
 234
 235           This driver differs from the non-ACPI Toshiba laptop driver (located
 236           under "Processor type and features") in several aspects.
 237           Configuration is accessed by reading and writing text files in the
 238           /proc tree instead of by program interface to /dev.  Furthermore, no
 239           power management functions are exposed, as those are handled by the
 240           general ACPI drivers.
 241
 242           More information about this driver is available at
 243           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 244
 245           If you have a legacy free Toshiba laptop (such as the Libretto L1
 246           series), say Y.
 247
 248 config ACPI_CUSTOM_DSDT
 249         bool "Include Custom DSDT"
 250         depends on !STANDALONE
 251         default n
 252         help
 253           Thist option is to load a custom ACPI DSDT
 254           If you don't know what that is, say N.
 255
 256 config ACPI_CUSTOM_DSDT_FILE
 257         string "Custom DSDT Table file to include"
 258         depends on ACPI_CUSTOM_DSDT
 259         default ""
 260         help
 261           Enter the full path name to the file wich includes the AmlCode declaration.
 262
 263 config ACPI_BLACKLIST_YEAR
 264         int "Disable ACPI for systems before Jan 1st this year"
 265         depends on ACPI_INTERPRETER
 266         default 0
 267         help
 268           enter a 4-digit year, eg. 2001 to disable ACPI by default
 269           on platforms with DMI BIOS date before January 1st that year.
 270           "acpi=force" can be used to override this mechanism.
 271
 272           Enter 0 to disable this mechanism and allow ACPI to
 273           run by default no matter what the year.  (default)
 274
 275 config ACPI_DEBUG
 276         bool "Debug Statements"
 277         default n
 278         help
 279           The ACPI driver can optionally report errors with a great deal
 280           of verbosity. Saying Y enables these statements. This will increase
 281           your kernel size by around 50K.
 282
 283 config ACPI_BUS
 284         bool
 285         default y
 286
 287 config ACPI_EC
 288         bool
 289         depends on X86
 290         default y
 291         help
 292           This driver is required on some systems for the proper operation of
 293           the battery and thermal drivers.  If you are compiling for a
 294           mobile system, say Y.
 295
 296 config ACPI_POWER
 297         bool
 298         default y
 299
 300 config ACPI_PCI
 301         bool
 302         default PCI
 303
 304 config ACPI_SYSTEM
 305         bool
 306         default y
 307         help
 308           This driver will enable your system to shut down using ACPI, and
 309           dump your ACPI DSDT table using /proc/acpi/dsdt.
 310
 311 endif   # ACPI_INTERPRETER
 312
 313 config X86_PM_TIMER
 314         bool "Power Management Timer Support"
 315         depends on X86
 316         depends on ACPI_BOOT && EXPERIMENTAL
 317         depends on !X86_64
 318         default n
 319         help
 320           The Power Management Timer is available on all ACPI-capable,
 321           in most cases even if ACPI is unusable or blacklisted.
 322
 323           This timing source is not affected by powermanagement features
 324           like aggressive processor idling, throttling, frequency and/or
 325           voltage scaling, unlike the commonly used Time Stamp Counter
 326           (TSC) timing source.
 327
 328           So, if you see messages like 'Losing too many ticks!' in the
 329           kernel logs, and/or you are using this on a notebook which
 330           does not yet have an HPET, you should say "Y" here.
 331
 332 config ACPI_CONTAINER
 333         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 334         depends on EXPERIMENTAL
 335         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 336          ---help---
 337           This allows _physical_ insertion and removal of CPUs and memory.
 338           This can be useful, for example, on NUMA machines that support
 339           ACPI based physical hotplug of nodes, or non-NUMA machines that
 340           support physical cpu/memory hot-plug.
 341
 342           If one selects "m", this driver can be loaded with
 343           "modprobe acpi_container".
 344
 345 config ACPI_HOTPLUG_MEMORY
 346         tristate "Memory Hotplug"
 347         depends on ACPI
 348         depends on MEMORY_HOTPLUG
 349         default n
 350         help
 351           This driver adds supports for ACPI Memory Hotplug.  This driver
 352           provides support for fielding notifications on ACPI memory
 353           devices (PNP0C80) which represent memory ranges that may be
 354           onlined or offlined during runtime.
 355
 356           Enabling this driver assumes that your platform hardware
 357           and firmware have support for hot-plugging physical memory. If
 358           your system does not support physically adding or ripping out
 359           memory DIMMs at some platfrom defined granularity (individually
 360           or as a bank) at runtime, then you need not enable this driver.
 361
 362           If one selects "m," this driver can be loaded using the following
 363           command:
 364                 $>modprobe acpi_memhotplug
 365 endif   # ACPI
 366
 367 endmenu