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
 110         default y
 111         help
 112           This driver implement the ACPI Extensions For Display Adapters
 113           for integrated graphics devices on motherboard, as specified in
 114           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 115           control like defining the video POST device, retrieving EDID information
 116           or to setup a video output, etc.
 117           Note that this is an ref. implementation only.  It may or may not work
 118           for your integrated video device.
 119
 120 config ACPI_HOTKEY
 121         tristate "Generic Hotkey (EXPERIMENTAL)"
 122         depends on EXPERIMENTAL
 123         depends on X86
 124         default n
 125         help
 126           Experimental consolidated hotkey driver.
 127           If you are unsure, say N.
 128
 129 config ACPI_FAN
 130         tristate "Fan"
 131         default y
 132         help
 133           This driver adds support for ACPI fan devices, allowing user-mode
 134           applications to perform basic fan control (on, off, status).
 135
 136 config ACPI_DOCK
 137         tristate "Dock"
 138         depends on !ACPI_IBM_DOCK
 139         default y
 140         help
 141           This driver adds support for ACPI controlled docking stations
 142
 143 config ACPI_PROCESSOR
 144         tristate "Processor"
 145         default y
 146         help
 147           This driver installs ACPI as the idle handler for Linux, and uses
 148           ACPI C2 and C3 processor states to save power, on systems that
 149           support it.  It is required by several flavors of cpufreq
 150           Performance-state drivers.
 151
 152 config ACPI_HOTPLUG_CPU
 153         bool
 154         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 155         select ACPI_CONTAINER
 156         default y
 157
 158 config ACPI_THERMAL
 159         tristate "Thermal Zone"
 160         depends on ACPI_PROCESSOR
 161         default y
 162         help
 163           This driver adds support for ACPI thermal zones.  Most mobile and
 164           some desktop systems support ACPI thermal zones.  It is HIGHLY
 165           recommended that this option be enabled, as your processor(s)
 166           may be damaged without it.
 167
 168 config ACPI_NUMA
 169         bool "NUMA support"
 170         depends on NUMA
 171         depends on (X86 || IA64)
 172         default y if IA64_GENERIC || IA64_SGI_SN2
 173
 174 config ACPI_ASUS
 175         tristate "ASUS/Medion Laptop Extras"
 176         depends on X86
 177         ---help---
 178           This driver provides support for extra features of ACPI-compatible
 179           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 180           support some Medion laptops (such as 9675 for example).  It makes all
 181           the extra buttons generate standard ACPI events that go through
 182           /proc/acpi/events, and (on some models) adds support for changing the
 183           display brightness and output, switching the LCD backlight on and off,
 184           and most importantly, allows you to blink those fancy LEDs intended
 185           for reporting mail and wireless status.
 186
 187           Note: display switching code is currently considered EXPERIMENTAL,
 188           toying with these values may even lock your machine.
 189
 190           All settings are changed via /proc/acpi/asus directory entries. Owner
 191           and group for these entries can be set with asus_uid and asus_gid
 192           parameters.
 193
 194           More information and a userspace daemon for handling the extra buttons
 195           at <http://sourceforge.net/projects/acpi4asus/>.
 196
 197           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 198           driver is still under development, so if your laptop is unsupported or
 199           something works not quite as expected, please use the mailing list
 200           available on the above page (acpi4asus-user@lists.sourceforge.net)
 201
 202 config ACPI_IBM
 203         tristate "IBM ThinkPad Laptop Extras"
 204         depends on X86
 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         default n
 218         ---help---
 219           Allows the ibm_acpi driver to handle docking station events.
 220           This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI.  It will
 221           allow locking and removing the laptop from the docking station,
 222           but will not properly connect PCI devices.
 223
 224           If you are not sure, say N here.
 225
 226 config ACPI_TOSHIBA
 227         tristate "Toshiba Laptop Extras"
 228         depends on X86
 229         ---help---
 230           This driver adds support for access to certain system settings
 231           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 232           their lack of a BIOS setup menu and APM support.
 233
 234           On these machines, all system configuration is handled through the
 235           ACPI.  This driver is required for access to controls not covered
 236           by the general ACPI drivers, such as LCD brightness, video output,
 237           etc.
 238
 239           This driver differs from the non-ACPI Toshiba laptop driver (located
 240           under "Processor type and features") in several aspects.
 241           Configuration is accessed by reading and writing text files in the
 242           /proc tree instead of by program interface to /dev.  Furthermore, no
 243           power management functions are exposed, as those are handled by the
 244           general ACPI drivers.
 245
 246           More information about this driver is available at
 247           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 248
 249           If you have a legacy free Toshiba laptop (such as the Libretto L1
 250           series), say Y.
 251
 252 config ACPI_CUSTOM_DSDT
 253         bool "Include Custom DSDT"
 254         depends on !STANDALONE
 255         default n
 256         help
 257           Thist option is to load a custom ACPI DSDT
 258           If you don't know what that is, say N.
 259
 260 config ACPI_CUSTOM_DSDT_FILE
 261         string "Custom DSDT Table file to include"
 262         depends on ACPI_CUSTOM_DSDT
 263         default ""
 264         help
 265           Enter the full path name to the file which includes the AmlCode
 266           declaration.
 267
 268 config ACPI_BLACKLIST_YEAR
 269         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 270         default 0
 271         help
 272           enter a 4-digit year, eg. 2001 to disable ACPI by default
 273           on platforms with DMI BIOS date before January 1st that year.
 274           "acpi=force" can be used to override this mechanism.
 275
 276           Enter 0 to disable this mechanism and allow ACPI to
 277           run by default no matter what the year.  (default)
 278
 279 config ACPI_DEBUG
 280         bool "Debug Statements"
 281         default n
 282         help
 283           The ACPI driver can optionally report errors with a great deal
 284           of verbosity. Saying Y enables these statements. This will increase
 285           your kernel size by around 50K.
 286
 287 config ACPI_EC
 288         bool
 289         default y
 290         help
 291           This driver is required on some systems for the proper operation of
 292           the battery and thermal drivers.  If you are compiling for a
 293           mobile system, say Y.
 294
 295 config ACPI_POWER
 296         bool
 297         default y
 298
 299 config ACPI_SYSTEM
 300         bool
 301         default y
 302         help
 303           This driver will enable your system to shut down using ACPI, and
 304           dump your ACPI DSDT table using /proc/acpi/dsdt.
 305
 306 config X86_PM_TIMER
 307         bool "Power Management Timer Support" if EMBEDDED
 308         depends on X86
 309         default y
 310         help
 311           The Power Management Timer is available on all ACPI-capable,
 312           in most cases even if ACPI is unusable or blacklisted.
 313
 314           This timing source is not affected by powermanagement features
 315           like aggressive processor idling, throttling, frequency and/or
 316           voltage scaling, unlike the commonly used Time Stamp Counter
 317           (TSC) timing source.
 318
 319           You should nearly always say Y here because many modern
 320           systems require this timer.
 321
 322 config ACPI_CONTAINER
 323         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 324         depends on EXPERIMENTAL
 325         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 326          ---help---
 327           This allows _physical_ insertion and removal of CPUs and memory.
 328           This can be useful, for example, on NUMA machines that support
 329           ACPI based physical hotplug of nodes, or non-NUMA machines that
 330           support physical cpu/memory hot-plug.
 331
 332           If one selects "m", this driver can be loaded with
 333           "modprobe acpi_container".
 334
 335 config ACPI_HOTPLUG_MEMORY
 336         tristate "Memory Hotplug"
 337         depends on ACPI
 338         depends on MEMORY_HOTPLUG
 339         default n
 340         help
 341           This driver adds supports for ACPI Memory Hotplug.  This driver
 342           provides support for fielding notifications on ACPI memory
 343           devices (PNP0C80) which represent memory ranges that may be
 344           onlined or offlined during runtime.
 345
 346           Enabling this driver assumes that your platform hardware
 347           and firmware have support for hot-plugging physical memory. If
 348           your system does not support physically adding or ripping out
 349           memory DIMMs at some platfrom defined granularity (individually
 350           or as a bank) at runtime, then you need not enable this driver.
 351
 352           If one selects "m," this driver can be loaded using the following
 353           command:
 354                 $>modprobe acpi_memhotplug
 355 endif   # ACPI
 356
 357 endmenu