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         default y
 172         ---help---
 173           This driver provides support for extra features of ACPI-compatible
 174           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 175           support some Medion laptops (such as 9675 for example).  It makes all
 176           the extra buttons generate standard ACPI events that go through
 177           /proc/acpi/events, and (on some models) adds support for changing the
 178           display brightness and output, switching the LCD backlight on and off,
 179           and most importantly, allows you to blink those fancy LEDs intended
 180           for reporting mail and wireless status.
 181
 182           Note: display switching code is currently considered EXPERIMENTAL,
 183           toying with these values may even lock your machine.
 184
 185           All settings are changed via /proc/acpi/asus directory entries. Owner
 186           and group for these entries can be set with asus_uid and asus_gid
 187           parameters.
 188
 189           More information and a userspace daemon for handling the extra buttons
 190           at <http://sourceforge.net/projects/acpi4asus/>.
 191
 192           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 193           driver is still under development, so if your laptop is unsupported or
 194           something works not quite as expected, please use the mailing list
 195           available on the above page (acpi4asus-user@lists.sourceforge.net)
 196
 197 config ACPI_IBM
 198         tristate "IBM ThinkPad Laptop Extras"
 199         depends on X86
 200         default y
 201         ---help---
 202           This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
 203           support for Fn-Fx key combinations, Bluetooth control, video
 204           output switching, ThinkLight control, UltraBay eject and more.
 205           For more information about this driver see <file:Documentation/ibm-acpi.txt>
 206           and <http://ibm-acpi.sf.net/> .
 207
 208           If you have an IBM ThinkPad laptop, say Y or M here.
 209
 210 config ACPI_TOSHIBA
 211         tristate "Toshiba Laptop Extras"
 212         depends on X86
 213         default y
 214         ---help---
 215           This driver adds support for access to certain system settings
 216           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 217           their lack of a BIOS setup menu and APM support.
 218
 219           On these machines, all system configuration is handled through the
 220           ACPI.  This driver is required for access to controls not covered
 221           by the general ACPI drivers, such as LCD brightness, video output,
 222           etc.
 223
 224           This driver differs from the non-ACPI Toshiba laptop driver (located
 225           under "Processor type and features") in several aspects.
 226           Configuration is accessed by reading and writing text files in the
 227           /proc tree instead of by program interface to /dev.  Furthermore, no
 228           power management functions are exposed, as those are handled by the
 229           general ACPI drivers.
 230
 231           More information about this driver is available at
 232           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 233
 234           If you have a legacy free Toshiba laptop (such as the Libretto L1
 235           series), say Y.
 236
 237 config ACPI_CUSTOM_DSDT
 238         bool "Include Custom DSDT"
 239         depends on !STANDALONE
 240         default n
 241         help
 242           Thist option is to load a custom ACPI DSDT
 243           If you don't know what that is, say N.
 244
 245 config ACPI_CUSTOM_DSDT_FILE
 246         string "Custom DSDT Table file to include"
 247         depends on ACPI_CUSTOM_DSDT
 248         default ""
 249         help
 250           Enter the full path name to the file wich includes the AmlCode declaration.
 251
 252 config ACPI_BLACKLIST_YEAR
 253         int "Disable ACPI for systems before Jan 1st this year" if X86
 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_EC
 272         bool
 273         depends on X86
 274         default y
 275         help
 276           This driver is required on some systems for the proper operation of
 277           the battery and thermal drivers.  If you are compiling for a
 278           mobile system, say Y.
 279
 280 config ACPI_POWER
 281         bool
 282         default y
 283
 284 config ACPI_SYSTEM
 285         bool
 286         default y
 287         help
 288           This driver will enable your system to shut down using ACPI, and
 289           dump your ACPI DSDT table using /proc/acpi/dsdt.
 290
 291 config X86_PM_TIMER
 292         bool "Power Management Timer Support"
 293         depends on X86
 294         depends on !X86_64
 295         default y
 296         help
 297           The Power Management Timer is available on all ACPI-capable,
 298           in most cases even if ACPI is unusable or blacklisted.
 299
 300           This timing source is not affected by powermanagement features
 301           like aggressive processor idling, throttling, frequency and/or
 302           voltage scaling, unlike the commonly used Time Stamp Counter
 303           (TSC) timing source.
 304
 305           So, if you see messages like 'Losing too many ticks!' in the
 306           kernel logs, and/or you are using this on a notebook which
 307           does not yet have an HPET, you should say "Y" here.
 308
 309 config ACPI_CONTAINER
 310         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 311         depends on EXPERIMENTAL
 312         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 313          ---help---
 314           This allows _physical_ insertion and removal of CPUs and memory.
 315           This can be useful, for example, on NUMA machines that support
 316           ACPI based physical hotplug of nodes, or non-NUMA machines that
 317           support physical cpu/memory hot-plug.
 318
 319           If one selects "m", this driver can be loaded with
 320           "modprobe acpi_container".
 321
 322 config ACPI_HOTPLUG_MEMORY
 323         tristate "Memory Hotplug"
 324         depends on ACPI
 325         depends on MEMORY_HOTPLUG
 326         default n
 327         help
 328           This driver adds supports for ACPI Memory Hotplug.  This driver
 329           provides support for fielding notifications on ACPI memory
 330           devices (PNP0C80) which represent memory ranges that may be
 331           onlined or offlined during runtime.
 332
 333           Enabling this driver assumes that your platform hardware
 334           and firmware have support for hot-plugging physical memory. If
 335           your system does not support physically adding or ripping out
 336           memory DIMMs at some platfrom defined granularity (individually
 337           or as a bank) at runtime, then you need not enable this driver.
 338
 339           If one selects "m," this driver can be loaded using the following
 340           command:
 341                 $>modprobe acpi_memhotplug
 342 endif   # ACPI
 343
 344 endmenu