drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menuconfig ACPI
   6         bool "ACPI Support (Advanced Configuration and Power Interface) Support"
   7         depends on !X86_NUMAQ
   8         depends on !X86_VISWS
   9         depends on !IA64_HP_SIM
  10         depends on IA64 || X86
  11         depends on PCI
  12         depends on PM
  13         select PNP
  14         default y
  15         ---help---
  16           Advanced Configuration and Power Interface (ACPI) support for
  17           Linux requires an ACPI compliant platform (hardware/firmware),
  18           and assumes the presence of OS-directed configuration and power
  19           management (OSPM) software.  This option will enlarge your
  20           kernel by about 70K.
  21
  22           Linux ACPI provides a robust functional replacement for several
  23           legacy configuration and power management interfaces, including
  24           the Plug-and-Play BIOS specification (PnP BIOS), the
  25           MultiProcessor Specification (MPS), and the Advanced Power
  26           Management (APM) specification.  If both ACPI and APM support
  27           are configured, whichever is loaded first shall be used.
  28
  29           The ACPI SourceForge project contains the latest source code,
  30           documentation, tools, mailing list subscription, and other
  31           information.  This project is available at:
  32           <http://sourceforge.net/projects/acpi>
  33
  34           Linux support for ACPI is based on Intel Corporation's ACPI
  35           Component Architecture (ACPI CA).  For more information see:
  36           <http://developer.intel.com/technology/iapc/acpi>
  37
  38           ACPI is an open industry specification co-developed by Compaq,
  39           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  40           available at:
  41           <http://www.acpi.info>
  42
  43 if ACPI
  44
  45 config ACPI_SLEEP
  46         bool
  47         depends on PM_SLEEP
  48         default y
  49
  50 config ACPI_PROCFS
  51         bool "Deprecated /proc/acpi files"
  52         depends on PROC_FS
  53         ---help---
  54           For backwards compatibility, this option allows
  55           depricated /proc/acpi/ files to exist, even when
  56           they have been replaced by functions in /sys.
  57           The deprecated files (and their replacements) include:
  58
  59           /proc/acpi/sleep (/sys/power/state)
  60           /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
  61           /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  62           /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  63           /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  64           /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  65
  66           This option has no effect on /proc/acpi/ files
  67           and functions which do not yet exist in /sys.
  68
  69           Say N to delete /proc/acpi/ files that have moved to /sys/
  70
  71 config ACPI_PROC_EVENT
  72         bool "Deprecated /proc/acpi/event support"
  73         depends on PROC_FS
  74         default y
  75         ---help---
  76           A user-space daemon, acpi, typically read /proc/acpi/event
  77           and handled all ACPI sub-system generated events.
  78
  79           These events are now delivered to user-space via
  80           either the input layer, or as netlink events.
  81
  82           This build option enables the old code for legacy
  83           user-space implementation.  After some time, this will
  84           be moved under CONFIG_ACPI_PROCFS, and then deleted.
  85
  86           Say Y here to retain the old behaviour.  Say N if your
  87           user-space is newer than kernel 2.6.23 (September 2007).
  88
  89 config ACPI_AC
  90         tristate "AC Adapter"
  91         depends on X86 && POWER_SUPPLY
  92         default y
  93         help
  94           This driver adds support for the AC Adapter object, which indicates
  95           whether a system is on AC, or not. If you have a system that can
  96           switch between A/C and battery, say Y.
  97
  98 config ACPI_BATTERY
  99         tristate "Battery"
 100         depends on X86 && POWER_SUPPLY
 101         default y
 102         help
 103           This driver adds support for battery information through
 104           /proc/acpi/battery. If you have a mobile system with a battery,
 105           say Y.
 106
 107 config ACPI_BUTTON
 108         tristate "Button"
 109         depends on INPUT
 110         default y
 111         help
 112           This driver handles events on the power, sleep and lid buttons.
 113           A daemon reads /proc/acpi/event and perform user-defined actions
 114           such as shutting down the system.  This is necessary for
 115           software controlled poweroff.
 116
 117 config ACPI_VIDEO
 118         tristate "Video"
 119         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 120         depends on INPUT
 121         help
 122           This driver implement the ACPI Extensions For Display Adapters
 123           for integrated graphics devices on motherboard, as specified in
 124           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 125           control like defining the video POST device, retrieving EDID information
 126           or to setup a video output, etc.
 127           Note that this is an ref. implementation only.  It may or may not work
 128           for your integrated video device.
 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_DOCK
 138         tristate "Dock"
 139         depends on EXPERIMENTAL
 140         help
 141           This driver adds support for ACPI controlled docking stations
 142
 143 config ACPI_BAY
 144         tristate "Removable Drive Bay (EXPERIMENTAL)"
 145         depends on EXPERIMENTAL
 146         depends on ACPI_DOCK
 147         help
 148           This driver adds support for ACPI controlled removable drive
 149           bays such as the IBM ultrabay or the Dell Module Bay.
 150
 151 config ACPI_PROCESSOR
 152         tristate "Processor"
 153         default y
 154         help
 155           This driver installs ACPI as the idle handler for Linux, and uses
 156           ACPI C2 and C3 processor states to save power, on systems that
 157           support it.  It is required by several flavors of cpufreq
 158           Performance-state drivers.
 159
 160 config ACPI_HOTPLUG_CPU
 161         bool
 162         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 163         select ACPI_CONTAINER
 164         default y
 165
 166 config ACPI_THERMAL
 167         tristate "Thermal Zone"
 168         depends on ACPI_PROCESSOR
 169         default y
 170         help
 171           This driver adds support for ACPI thermal zones.  Most mobile and
 172           some desktop systems support ACPI thermal zones.  It is HIGHLY
 173           recommended that this option be enabled, as your processor(s)
 174           may be damaged without it.
 175
 176 config ACPI_NUMA
 177         bool "NUMA support"
 178         depends on NUMA
 179         depends on (X86 || IA64)
 180         default y if IA64_GENERIC || IA64_SGI_SN2
 181
 182 config ACPI_ASUS
 183         tristate "ASUS/Medion Laptop Extras"
 184         depends on X86
 185         select BACKLIGHT_CLASS_DEVICE
 186         ---help---
 187           This driver provides support for extra features of ACPI-compatible
 188           ASUS laptops. As some of Medion laptops are made by ASUS, it may also
 189           support some Medion laptops (such as 9675 for example).  It makes all
 190           the extra buttons generate standard ACPI events that go through
 191           /proc/acpi/events, and (on some models) adds support for changing the
 192           display brightness and output, switching the LCD backlight on and off,
 193           and most importantly, allows you to blink those fancy LEDs intended
 194           for reporting mail and wireless status.
 195
 196           Note: display switching code is currently considered EXPERIMENTAL,
 197           toying with these values may even lock your machine.
 198
 199           All settings are changed via /proc/acpi/asus directory entries. Owner
 200           and group for these entries can be set with asus_uid and asus_gid
 201           parameters.
 202
 203           More information and a userspace daemon for handling the extra buttons
 204           at <http://sourceforge.net/projects/acpi4asus/>.
 205
 206           If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 207           driver is still under development, so if your laptop is unsupported or
 208           something works not quite as expected, please use the mailing list
 209           available on the above page (acpi4asus-user@lists.sourceforge.net).
 210
 211           NOTE: This driver is deprecated and will probably be removed soon,
 212           use asus-laptop instead.
 213
 214 config ACPI_TOSHIBA
 215         tristate "Toshiba Laptop Extras"
 216         depends on X86
 217         select BACKLIGHT_CLASS_DEVICE
 218         ---help---
 219           This driver adds support for access to certain system settings
 220           on "legacy free" Toshiba laptops.  These laptops can be recognized by
 221           their lack of a BIOS setup menu and APM support.
 222
 223           On these machines, all system configuration is handled through the
 224           ACPI.  This driver is required for access to controls not covered
 225           by the general ACPI drivers, such as LCD brightness, video output,
 226           etc.
 227
 228           This driver differs from the non-ACPI Toshiba laptop driver (located
 229           under "Processor type and features") in several aspects.
 230           Configuration is accessed by reading and writing text files in the
 231           /proc tree instead of by program interface to /dev.  Furthermore, no
 232           power management functions are exposed, as those are handled by the
 233           general ACPI drivers.
 234
 235           More information about this driver is available at
 236           <http://memebeam.org/toys/ToshibaAcpiDriver>.
 237
 238           If you have a legacy free Toshiba laptop (such as the Libretto L1
 239           series), say Y.
 240
 241 config ACPI_CUSTOM_DSDT
 242         bool "Include Custom DSDT"
 243         depends on !STANDALONE
 244         default n
 245         help
 246           This option is to load a custom ACPI DSDT
 247           If you don't know what that is, say N.
 248
 249 config ACPI_CUSTOM_DSDT_FILE
 250         string "Custom DSDT Table file to include"
 251         depends on ACPI_CUSTOM_DSDT
 252         default ""
 253         help
 254           Enter the full path name to the file which includes the AmlCode
 255           declaration.
 256
 257 config ACPI_BLACKLIST_YEAR
 258         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 259         default 0
 260         help
 261           enter a 4-digit year, eg. 2001 to disable ACPI by default
 262           on platforms with DMI BIOS date before January 1st that year.
 263           "acpi=force" can be used to override this mechanism.
 264
 265           Enter 0 to disable this mechanism and allow ACPI to
 266           run by default no matter what the year.  (default)
 267
 268 config ACPI_DEBUG
 269         bool "Debug Statements"
 270         default n
 271         help
 272           The ACPI driver can optionally report errors with a great deal
 273           of verbosity. Saying Y enables these statements. This will increase
 274           your kernel size by around 50K.
 275
 276 config ACPI_DEBUG_FUNC_TRACE
 277         bool "Additionally enable ACPI function tracing"
 278         default n
 279         depends on ACPI_DEBUG
 280         help
 281           ACPI Debug Statements slow down ACPI processing. Function trace
 282           is about half of the penalty and is rarely useful.
 283
 284 config ACPI_EC
 285         bool
 286         default y
 287         help
 288           This driver is required on some systems for the proper operation of
 289           the battery and thermal drivers.  If you are compiling for a
 290           mobile system, say Y.
 291
 292 config ACPI_POWER
 293         bool
 294         default y
 295
 296 config ACPI_SYSTEM
 297         bool
 298         default y
 299         help
 300           This driver will enable your system to shut down using ACPI, and
 301           dump your ACPI DSDT table using /proc/acpi/dsdt.
 302
 303 config X86_PM_TIMER
 304         bool "Power Management Timer Support" if EMBEDDED
 305         depends on X86
 306         default y
 307         help
 308           The Power Management Timer is available on all ACPI-capable,
 309           in most cases even if ACPI is unusable or blacklisted.
 310
 311           This timing source is not affected by power management features
 312           like aggressive processor idling, throttling, frequency and/or
 313           voltage scaling, unlike the commonly used Time Stamp Counter
 314           (TSC) timing source.
 315
 316           You should nearly always say Y here because many modern
 317           systems require this timer.
 318
 319 config ACPI_CONTAINER
 320         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 321         depends on EXPERIMENTAL
 322         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 323          ---help---
 324           This allows _physical_ insertion and removal of CPUs and memory.
 325           This can be useful, for example, on NUMA machines that support
 326           ACPI based physical hotplug of nodes, or non-NUMA machines that
 327           support physical cpu/memory hot-plug.
 328
 329           If one selects "m", this driver can be loaded with
 330           "modprobe acpi_container".
 331
 332 config ACPI_HOTPLUG_MEMORY
 333         tristate "Memory Hotplug"
 334         depends on MEMORY_HOTPLUG
 335         default n
 336         help
 337           This driver adds supports for ACPI Memory Hotplug.  This driver
 338           provides support for fielding notifications on ACPI memory
 339           devices (PNP0C80) which represent memory ranges that may be
 340           onlined or offlined during runtime.
 341
 342           Enabling this driver assumes that your platform hardware
 343           and firmware have support for hot-plugging physical memory. If
 344           your system does not support physically adding or ripping out
 345           memory DIMMs at some platform defined granularity (individually
 346           or as a bank) at runtime, then you need not enable this driver.
 347
 348           If one selects "m," this driver can be loaded using the following
 349           command:
 350                 $>modprobe acpi_memhotplug
 351
 352 config ACPI_SBS
 353         tristate "Smart Battery System"
 354         depends on X86
 355         depends on POWER_SUPPLY
 356         help
 357           This driver adds support for the Smart Battery System, another
 358           type of access to battery information, found on some laptops.
 359
 360 endif   # ACPI