drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menu "ACPI (Advanced Configuration and Power Interface) Support"
   6         depends on !X86_VISWS
   7         depends on !IA64_HP_SIM
   8         depends on IA64 || X86
   9
  10 config ACPI
  11         bool "ACPI Support"
  12         depends on IA64 || X86
  13         select PM
  14         select PCI
  15
  16         default y
  17         ---help---
  18           Advanced Configuration and Power Interface (ACPI) support for
  19           Linux requires an ACPI compliant platform (hardware/firmware),
  20           and assumes the presence of OS-directed configuration and power
  21           management (OSPM) software.  This option will enlarge your
  22           kernel by about 70K.
  23
  24           Linux ACPI provides a robust functional replacement for several
  25           legacy configuration and power management interfaces, including
  26           the Plug-and-Play BIOS specification (PnP BIOS), the
  27           MultiProcessor Specification (MPS), and the Advanced Power
  28           Management (APM) specification.  If both ACPI and APM support
  29           are configured, whichever is loaded first shall be used.
  30
  31           The ACPI SourceForge project contains the latest source code,
  32           documentation, tools, mailing list subscription, and other
  33           information.  This project is available at:
  34           <http://sourceforge.net/projects/acpi>
  35
  36           Linux support for ACPI is based on Intel Corporation's ACPI
  37           Component Architecture (ACPI CA).  For more information see:
  38           <http://developer.intel.com/technology/iapc/acpi>
  39
  40           ACPI is an open industry specification co-developed by Compaq,
  41           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  42           available at:
  43           <http://www.acpi.info>
  44
  45 if ACPI
  46
  47 config ACPI_SLEEP
  48         bool "Sleep States"
  49         depends on X86 && (!SMP || SUSPEND_SMP)
  50         depends on PM
  51         default y
  52         ---help---
  53           This option adds support for ACPI suspend states.
  54
  55           With this option, you will be able to put the system "to sleep".
  56           Sleep states are low power states for the system and devices. All
  57           of the system operating state is saved to either memory or disk
  58           (depending on the state), to allow the system to resume operation
  59           quickly at your request.
  60
  61           Although this option sounds really nifty, barely any of the device
  62           drivers have been converted to the new driver model and hence few
  63           have proper power management support.
  64
  65           This option is not recommended for anyone except those doing driver
  66           power management development.
  67
  68 config ACPI_SLEEP_PROC_FS
  69         bool
  70         depends on ACPI_SLEEP && PROC_FS
  71         default y
  72
  73 config ACPI_SLEEP_PROC_SLEEP
  74         bool "/proc/acpi/sleep (deprecated)"
  75         depends on ACPI_SLEEP_PROC_FS
  76         default n
  77         ---help---
  78           Create /proc/acpi/sleep
  79           Deprecated by /sys/power/state
  80
  81 config ACPI_AC
  82         tristate "AC Adapter"
  83         depends on X86
  84         default y
  85         help
  86           This driver adds support for the AC Adapter object, which indicates
  87           whether a system is on AC, or not. If you have a system that can
  88           switch between A/C and battery, say Y.
  89
  90 config ACPI_BATTERY
  91         tristate "Battery"
  92         depends on X86
  93         default y
  94         help
  95           This driver adds support for battery information through
  96           /proc/acpi/battery. If you have a mobile system with a battery,
  97           say Y.
  98
  99 config ACPI_BUTTON
 100         tristate "Button"
 101         default y
 102         help
 103           This driver handles events on the power, sleep and lid buttons.
 104           A daemon reads /proc/acpi/event and perform user-defined actions
 105           such as shutting down the system.  This is necessary for
 106           software controlled poweroff.
 107
 108 config ACPI_VIDEO
 109         tristate "Video"
 110         depends on X86
 111         default y
 112         help
 113           This driver implement the ACPI Extensions For Display Adapters
 114           for integrated graphics devices on motherboard, as specified in
 115           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 116           control like defining the video POST device, retrieving EDID information
 117           or to setup a video output, etc.
 118           Note that this is an ref. implementation only.  It may or may not work
 119           for your integrated video device.
 120
 121 config ACPI_HOTKEY
 122         tristate "Generic Hotkey (EXPERIMENTAL)"
 123         depends on EXPERIMENTAL
 124         depends on X86
 125         default n
 126         help
 127           Experimental consolidated hotkey driver.
 128           If you are unsure, say N.
 129
 130 config ACPI_FAN
 131         tristate "Fan"
 132         default y
 133         help
 134           This driver adds support for ACPI fan devices, allowing user-mode
 135           applications to perform basic fan control (on, off, status).
 136
 137 config ACPI_PROCESSOR
 138         tristate "Processor"
 139         default y
 140         help
 141           This driver installs ACPI as the idle handler for Linux, and uses
 142           ACPI C2 and C3 processor states to save power, on systems that
 143           support it.  It is required by several flavors of cpufreq
 144           Performance-state drivers.
 145
 146 config ACPI_HOTPLUG_CPU
 147         bool
 148         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 149         select ACPI_CONTAINER
 150         default y
 151
 152 config ACPI_THERMAL
 153         tristate "Thermal Zone"
 154         depends on ACPI_PROCESSOR
 155         default y
 156         help
 157           This driver adds support for ACPI thermal zones.  Most mobile and
 158           some desktop systems support ACPI thermal zones.  It is HIGHLY
 159           recommended that this option be enabled, as your processor(s)
 160           may be damaged without it.
 161
 162 config ACPI_NUMA
 163         bool "NUMA support"
 164         depends on NUMA
 165         depends on (IA64 || X86_64)
 166         default y if IA64_GENERIC || IA64_SGI_SN2
 167
 168 config ACPI_ASUS
 169         tristate "ASUS/Medion Laptop Extras"
 170         depends on X86
 171         ---help---
 172           This driver provides support for extra features of ACPI-compatible
 173           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 174           support some Medion laptops (such as 9675 for example).  It makes all
 175           the extra buttons generate standard ACPI events that go through
 176           /proc/acpi/events, and (on some models) adds support for changing the
 177           display brightness and output, switching the LCD backlight on and off,
 178           and most importantly, allows you to blink those fancy LEDs intended
 179           for reporting mail and wireless status.
 180
 181           Note: display switching code is currently considered EXPERIMENTAL,
 182           toying with these values may even lock your machine.
 183
 184           All settings are changed via /proc/acpi/asus directory entries. Owner
 185           and group for these entries can be set with asus_uid and asus_gid
 186           parameters.
 187
 188           More information and a userspace daemon for handling the extra buttons
 189           at <http://sourceforge.net/projects/acpi4asus/>.
 190
 191           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 192           driver is still under development, so if your laptop is unsupported or
 193           something works not quite as expected, please use the mailing list
 194           available on the above page (acpi4asus-user@lists.sourceforge.net)
 195
 196 config ACPI_IBM
 197         tristate "IBM ThinkPad Laptop Extras"
 198         depends on X86
 199         ---help---
 200           This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
 201           support for Fn-Fx key combinations, Bluetooth control, video
 202           output switching, ThinkLight control, UltraBay eject and more.
 203           For more information about this driver see <file:Documentation/ibm-acpi.txt>
 204           and <http://ibm-acpi.sf.net/> .
 205
 206           If you have an IBM ThinkPad laptop, say Y or M here.
 207
 208 config ACPI_IBM_DOCK
 209         bool "Legacy Docking Station Support"
 210         depends on ACPI_IBM
 211         default n
 212         ---help---
 213           Allows the ibm_acpi driver to handle docking station events.
 214           This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI.  It will
 215           allow locking and removing the laptop from the docking station,
 216           but will not properly connect PCI devices.
 217
 218           If you are not sure, say N here.
 219
 220 config ACPI_TOSHIBA
 221         tristate "Toshiba Laptop Extras"
 222         depends on X86
 223         ---help---
 224           This driver adds support for access to certain system settings
 225           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 226           their lack of a BIOS setup menu and APM support.
 227
 228           On these machines, all system configuration is handled through the
 229           ACPI.  This driver is required for access to controls not covered
 230           by the general ACPI drivers, such as LCD brightness, video output,
 231           etc.
 232
 233           This driver differs from the non-ACPI Toshiba laptop driver (located
 234           under "Processor type and features") in several aspects.
 235           Configuration is accessed by reading and writing text files in the
 236           /proc tree instead of by program interface to /dev.  Furthermore, no
 237           power management functions are exposed, as those are handled by the
 238           general ACPI drivers.
 239
 240           More information about this driver is available at
 241           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 242
 243           If you have a legacy free Toshiba laptop (such as the Libretto L1
 244           series), say Y.
 245
 246 config ACPI_CUSTOM_DSDT
 247         bool "Include Custom DSDT"
 248         depends on !STANDALONE
 249         default n
 250         help
 251           Thist option is to load a custom ACPI DSDT
 252           If you don't know what that is, say N.
 253
 254 config ACPI_CUSTOM_DSDT_FILE
 255         string "Custom DSDT Table file to include"
 256         depends on ACPI_CUSTOM_DSDT
 257         default ""
 258         help
 259           Enter the full path name to the file which includes the AmlCode
 260           declaration.
 261
 262 config ACPI_BLACKLIST_YEAR
 263         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 264         default 0
 265         help
 266           enter a 4-digit year, eg. 2001 to disable ACPI by default
 267           on platforms with DMI BIOS date before January 1st that year.
 268           "acpi=force" can be used to override this mechanism.
 269
 270           Enter 0 to disable this mechanism and allow ACPI to
 271           run by default no matter what the year.  (default)
 272
 273 config ACPI_DEBUG
 274         bool "Debug Statements"
 275         default n
 276         help
 277           The ACPI driver can optionally report errors with a great deal
 278           of verbosity. Saying Y enables these statements. This will increase
 279           your kernel size by around 50K.
 280
 281 config ACPI_EC
 282         bool
 283         default y
 284         help
 285           This driver is required on some systems for the proper operation of
 286           the battery and thermal drivers.  If you are compiling for a
 287           mobile system, say Y.
 288
 289 config ACPI_POWER
 290         bool
 291         default y
 292
 293 config ACPI_SYSTEM
 294         bool
 295         default y
 296         help
 297           This driver will enable your system to shut down using ACPI, and
 298           dump your ACPI DSDT table using /proc/acpi/dsdt.
 299
 300 config X86_PM_TIMER
 301         bool "Power Management Timer Support" if EMBEDDED
 302         depends on X86
 303         default y
 304         help
 305           The Power Management Timer is available on all ACPI-capable,
 306           in most cases even if ACPI is unusable or blacklisted.
 307
 308           This timing source is not affected by powermanagement features
 309           like aggressive processor idling, throttling, frequency and/or
 310           voltage scaling, unlike the commonly used Time Stamp Counter
 311           (TSC) timing source.
 312
 313           You should nearly always say Y here because many modern
 314           systems require this timer.
 315
 316 config ACPI_CONTAINER
 317         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 318         depends on EXPERIMENTAL
 319         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 320          ---help---
 321           This allows _physical_ insertion and removal of CPUs and memory.
 322           This can be useful, for example, on NUMA machines that support
 323           ACPI based physical hotplug of nodes, or non-NUMA machines that
 324           support physical cpu/memory hot-plug.
 325
 326           If one selects "m", this driver can be loaded with
 327           "modprobe acpi_container".
 328
 329 config ACPI_HOTPLUG_MEMORY
 330         tristate "Memory Hotplug"
 331         depends on ACPI
 332         depends on MEMORY_HOTPLUG || X86_64
 333         default n
 334         help
 335           This driver adds supports for ACPI Memory Hotplug.  This driver
 336           provides support for fielding notifications on ACPI memory
 337           devices (PNP0C80) which represent memory ranges that may be
 338           onlined or offlined during runtime.
 339
 340           Enabling this driver assumes that your platform hardware
 341           and firmware have support for hot-plugging physical memory. If
 342           your system does not support physically adding or ripping out
 343           memory DIMMs at some platfrom defined granularity (individually
 344           or as a bank) at runtime, then you need not enable this driver.
 345
 346           If one selects "m," this driver can be loaded using the following
 347           command:
 348                 $>modprobe acpi_memhotplug
 349 endif   # ACPI
 350
 351 endmenu