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         depends on PCI
  14         select PM
  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_SLEEP
  47         bool "Sleep States"
  48         depends on X86 && (!SMP || SUSPEND_SMP)
  49         depends on PM
  50         default y
  51         ---help---
  52           This option adds support for ACPI suspend states.
  53
  54           With this option, you will be able to put the system "to sleep".
  55           Sleep states are low power states for the system and devices. All
  56           of the system operating state is saved to either memory or disk
  57           (depending on the state), to allow the system to resume operation
  58           quickly at your request.
  59
  60           Although this option sounds really nifty, barely any of the device
  61           drivers have been converted to the new driver model and hence few
  62           have proper power management support.
  63
  64           This option is not recommended for anyone except those doing driver
  65           power management development.
  66
  67 config ACPI_SLEEP_PROC_FS
  68         bool
  69         depends on ACPI_SLEEP && PROC_FS
  70         default y
  71
  72 config ACPI_SLEEP_PROC_SLEEP
  73         bool "/proc/acpi/sleep (deprecated)"
  74         depends on ACPI_SLEEP_PROC_FS
  75         default n
  76         ---help---
  77           Create /proc/acpi/sleep
  78           Deprecated by /sys/power/state
  79
  80 config ACPI_AC
  81         tristate "AC Adapter"
  82         depends on X86
  83         default y
  84         help
  85           This driver adds support for the AC Adapter object, which indicates
  86           whether a system is on AC, or not. If you have a system that can
  87           switch between A/C and battery, say Y.
  88
  89 config ACPI_BATTERY
  90         tristate "Battery"
  91         depends on X86
  92         default y
  93         help
  94           This driver adds support for battery information through
  95           /proc/acpi/battery. If you have a mobile system with a battery,
  96           say Y.
  97
  98 config ACPI_BUTTON
  99         tristate "Button"
 100         default y
 101         help
 102           This driver handles events on the power, sleep and lid buttons.
 103           A daemon reads /proc/acpi/event and perform user-defined actions
 104           such as shutting down the system.  This is necessary for
 105           software controlled poweroff.
 106
 107 config ACPI_VIDEO
 108         tristate "Video"
 109         depends on X86 && BACKLIGHT_CLASS_DEVICE
 110         help
 111           This driver implement the ACPI Extensions For Display Adapters
 112           for integrated graphics devices on motherboard, as specified in
 113           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 114           control like defining the video POST device, retrieving EDID information
 115           or to setup a video output, etc.
 116           Note that this is an ref. implementation only.  It may or may not work
 117           for your integrated video device.
 118
 119 config ACPI_HOTKEY
 120         tristate "Generic Hotkey (EXPERIMENTAL)"
 121         depends on EXPERIMENTAL
 122         depends on X86
 123         default n
 124         help
 125           Experimental consolidated hotkey driver.
 126           If you are unsure, say N.
 127
 128 config ACPI_FAN
 129         tristate "Fan"
 130         default y
 131         help
 132           This driver adds support for ACPI fan devices, allowing user-mode
 133           applications to perform basic fan control (on, off, status).
 134
 135 config ACPI_DOCK
 136         tristate "Dock"
 137         depends on EXPERIMENTAL
 138         help
 139           This driver adds support for ACPI controlled docking stations
 140
 141 config ACPI_PROCESSOR
 142         tristate "Processor"
 143         default y
 144         help
 145           This driver installs ACPI as the idle handler for Linux, and uses
 146           ACPI C2 and C3 processor states to save power, on systems that
 147           support it.  It is required by several flavors of cpufreq
 148           Performance-state drivers.
 149
 150 config ACPI_HOTPLUG_CPU
 151         bool
 152         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 153         select ACPI_CONTAINER
 154         default y
 155
 156 config ACPI_THERMAL
 157         tristate "Thermal Zone"
 158         depends on ACPI_PROCESSOR
 159         default y
 160         help
 161           This driver adds support for ACPI thermal zones.  Most mobile and
 162           some desktop systems support ACPI thermal zones.  It is HIGHLY
 163           recommended that this option be enabled, as your processor(s)
 164           may be damaged without it.
 165
 166 config ACPI_NUMA
 167         bool "NUMA support"
 168         depends on NUMA
 169         depends on (X86 || IA64)
 170         default y if IA64_GENERIC || IA64_SGI_SN2
 171
 172 config ACPI_ASUS
 173         tristate "ASUS/Medion Laptop Extras"
 174         depends on X86
 175         select BACKLIGHT_CLASS_DEVICE
 176         ---help---
 177           This driver provides support for extra features of ACPI-compatible
 178           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 179           support some Medion laptops (such as 9675 for example).  It makes all
 180           the extra buttons generate standard ACPI events that go through
 181           /proc/acpi/events, and (on some models) adds support for changing the
 182           display brightness and output, switching the LCD backlight on and off,
 183           and most importantly, allows you to blink those fancy LEDs intended
 184           for reporting mail and wireless status.
 185
 186           Note: display switching code is currently considered EXPERIMENTAL,
 187           toying with these values may even lock your machine.
 188
 189           All settings are changed via /proc/acpi/asus directory entries. Owner
 190           and group for these entries can be set with asus_uid and asus_gid
 191           parameters.
 192
 193           More information and a userspace daemon for handling the extra buttons
 194           at <http://sourceforge.net/projects/acpi4asus/>.
 195
 196           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 197           driver is still under development, so if your laptop is unsupported or
 198           something works not quite as expected, please use the mailing list
 199           available on the above page (acpi4asus-user@lists.sourceforge.net)
 200
 201 config ACPI_IBM
 202         tristate "IBM ThinkPad Laptop Extras"
 203         depends on X86
 204         select BACKLIGHT_CLASS_DEVICE
 205         ---help---
 206           This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
 207           support for Fn-Fx key combinations, Bluetooth control, video
 208           output switching, ThinkLight control, UltraBay eject and more.
 209           For more information about this driver see <file:Documentation/ibm-acpi.txt>
 210           and <http://ibm-acpi.sf.net/> .
 211
 212           If you have an IBM ThinkPad laptop, say Y or M here.
 213
 214 config ACPI_IBM_DOCK
 215         bool "Legacy Docking Station Support"
 216         depends on ACPI_IBM
 217         depends on ACPI_DOCK=n
 218         default n
 219         ---help---
 220           Allows the ibm_acpi driver to handle docking station events.
 221           This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI.  It will
 222           allow locking and removing the laptop from the docking station,
 223           but will not properly connect PCI devices.
 224
 225           If you are not sure, say N here.
 226
 227 config ACPI_IBM_BAY
 228         bool "Legacy Removable Bay Support"
 229         depends on ACPI_IBM
 230         depends on ACPI_BAY=n
 231         default n
 232         ---help---
 233           Allows the ibm_acpi driver to handle removable bays.
 234           This support is obsoleted by CONFIG_ACPI_BAY.
 235
 236           If you are not sure, say N here.
 237
 238 config ACPI_TOSHIBA
 239         tristate "Toshiba Laptop Extras"
 240         depends on X86
 241         select BACKLIGHT_CLASS_DEVICE
 242         ---help---
 243           This driver adds support for access to certain system settings
 244           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 245           their lack of a BIOS setup menu and APM support.
 246
 247           On these machines, all system configuration is handled through the
 248           ACPI.  This driver is required for access to controls not covered
 249           by the general ACPI drivers, such as LCD brightness, video output,
 250           etc.
 251
 252           This driver differs from the non-ACPI Toshiba laptop driver (located
 253           under "Processor type and features") in several aspects.
 254           Configuration is accessed by reading and writing text files in the
 255           /proc tree instead of by program interface to /dev.  Furthermore, no
 256           power management functions are exposed, as those are handled by the
 257           general ACPI drivers.
 258
 259           More information about this driver is available at
 260           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 261
 262           If you have a legacy free Toshiba laptop (such as the Libretto L1
 263           series), say Y.
 264
 265 config ACPI_CUSTOM_DSDT
 266         bool "Include Custom DSDT"
 267         depends on !STANDALONE
 268         default n
 269         help
 270           This option is to load a custom ACPI DSDT
 271           If you don't know what that is, say N.
 272
 273 config ACPI_CUSTOM_DSDT_FILE
 274         string "Custom DSDT Table file to include"
 275         depends on ACPI_CUSTOM_DSDT
 276         default ""
 277         help
 278           Enter the full path name to the file which includes the AmlCode
 279           declaration.
 280
 281 config ACPI_BLACKLIST_YEAR
 282         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 283         default 0
 284         help
 285           enter a 4-digit year, eg. 2001 to disable ACPI by default
 286           on platforms with DMI BIOS date before January 1st that year.
 287           "acpi=force" can be used to override this mechanism.
 288
 289           Enter 0 to disable this mechanism and allow ACPI to
 290           run by default no matter what the year.  (default)
 291
 292 config ACPI_DEBUG
 293         bool "Debug Statements"
 294         default n
 295         help
 296           The ACPI driver can optionally report errors with a great deal
 297           of verbosity. Saying Y enables these statements. This will increase
 298           your kernel size by around 50K.
 299
 300 config ACPI_EC
 301         bool
 302         default y
 303         help
 304           This driver is required on some systems for the proper operation of
 305           the battery and thermal drivers.  If you are compiling for a
 306           mobile system, say Y.
 307
 308 config ACPI_POWER
 309         bool
 310         default y
 311
 312 config ACPI_SYSTEM
 313         bool
 314         default y
 315         help
 316           This driver will enable your system to shut down using ACPI, and
 317           dump your ACPI DSDT table using /proc/acpi/dsdt.
 318
 319 config X86_PM_TIMER
 320         bool "Power Management Timer Support" if EMBEDDED
 321         depends on X86
 322         default y
 323         help
 324           The Power Management Timer is available on all ACPI-capable,
 325           in most cases even if ACPI is unusable or blacklisted.
 326
 327           This timing source is not affected by power management features
 328           like aggressive processor idling, throttling, frequency and/or
 329           voltage scaling, unlike the commonly used Time Stamp Counter
 330           (TSC) timing source.
 331
 332           You should nearly always say Y here because many modern
 333           systems require this timer.
 334
 335 config ACPI_CONTAINER
 336         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 337         depends on EXPERIMENTAL
 338         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 339          ---help---
 340           This allows _physical_ insertion and removal of CPUs and memory.
 341           This can be useful, for example, on NUMA machines that support
 342           ACPI based physical hotplug of nodes, or non-NUMA machines that
 343           support physical cpu/memory hot-plug.
 344
 345           If one selects "m", this driver can be loaded with
 346           "modprobe acpi_container".
 347
 348 config ACPI_HOTPLUG_MEMORY
 349         tristate "Memory Hotplug"
 350         depends on ACPI
 351         depends on MEMORY_HOTPLUG
 352         default n
 353         help
 354           This driver adds supports for ACPI Memory Hotplug.  This driver
 355           provides support for fielding notifications on ACPI memory
 356           devices (PNP0C80) which represent memory ranges that may be
 357           onlined or offlined during runtime.
 358
 359           Enabling this driver assumes that your platform hardware
 360           and firmware have support for hot-plugging physical memory. If
 361           your system does not support physically adding or ripping out
 362           memory DIMMs at some platform defined granularity (individually
 363           or as a bank) at runtime, then you need not enable this driver.
 364
 365           If one selects "m," this driver can be loaded using the following
 366           command:
 367                 $>modprobe acpi_memhotplug
 368
 369 config ACPI_SBS
 370         tristate "Smart Battery System (EXPERIMENTAL)"
 371         depends on X86 && I2C
 372         depends on EXPERIMENTAL
 373         help
 374           This driver adds support for the Smart Battery System.
 375           Depends on I2C (Device Drivers ---> I2C support)
 376           A "Smart Battery" is quite old and quite rare compared
 377           to today's ACPI "Control Method" battery.
 378
 379 endif   # ACPI
 380
 381 endmenu