drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menuconfig ACPI
   6         bool "ACPI (Advanced Configuration and Power Interface) Support"
   7         depends on !IA64_HP_SIM
   8         depends on IA64 || X86
   9         depends on PCI
  10         depends on PM
  11         select PNP
  12         default y
  13         ---help---
  14           Advanced Configuration and Power Interface (ACPI) support for
  15           Linux requires an ACPI compliant platform (hardware/firmware),
  16           and assumes the presence of OS-directed configuration and power
  17           management (OSPM) software.  This option will enlarge your
  18           kernel by about 70K.
  19
  20           Linux ACPI provides a robust functional replacement for several
  21           legacy configuration and power management interfaces, including
  22           the Plug-and-Play BIOS specification (PnP BIOS), the
  23           MultiProcessor Specification (MPS), and the Advanced Power
  24           Management (APM) specification.  If both ACPI and APM support
  25           are configured, whichever is loaded first shall be used.
  26
  27           The ACPI SourceForge project contains the latest source code,
  28           documentation, tools, mailing list subscription, and other
  29           information.  This project is available at:
  30           <http://sourceforge.net/projects/acpi>
  31
  32           Linux support for ACPI is based on Intel Corporation's ACPI
  33           Component Architecture (ACPI CA).  For more information see:
  34           <http://developer.intel.com/technology/iapc/acpi>
  35
  36           ACPI is an open industry specification co-developed by Compaq,
  37           Intel, Microsoft, Phoenix, and Toshiba.  The specification is
  38           available at:
  39           <http://www.acpi.info>
  40
  41 if ACPI
  42
  43 config ACPI_SLEEP
  44         bool
  45         depends on SUSPEND || HIBERNATION
  46         default y
  47
  48 config ACPI_PROCFS
  49         bool "Deprecated /proc/acpi files"
  50         depends on PROC_FS
  51         ---help---
  52           For backwards compatibility, this option allows
  53           deprecated /proc/acpi/ files to exist, even when
  54           they have been replaced by functions in /sys.
  55           The deprecated files (and their replacements) include:
  56
  57           /proc/acpi/sleep (/sys/power/state)
  58           /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
  59           /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  60           /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  61           /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  62           /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  63
  64           This option has no effect on /proc/acpi/ files
  65           and functions which do not yet exist in /sys.
  66
  67           Say N to delete /proc/acpi/ files that have moved to /sys/
  68 config ACPI_PROCFS_POWER
  69         bool "Deprecated power /proc/acpi directories"
  70         depends on PROC_FS
  71         default y
  72         ---help---
  73           For backwards compatibility, this option allows
  74           deprecated power /proc/acpi/ directories to exist, even when
  75           they have been replaced by functions in /sys.
  76           The deprecated directories (and their replacements) include:
  77           /proc/acpi/battery/* (/sys/class/power_supply/*)
  78           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  79           This option has no effect on /proc/acpi/ directories
  80           and functions, which do not yet exist in /sys
  81
  82           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  83
  84 config ACPI_SYSFS_POWER
  85         bool "Future power /sys interface"
  86         select POWER_SUPPLY
  87         default y
  88         ---help---
  89           Say N to disable power /sys interface
  90
  91 config ACPI_PROC_EVENT
  92         bool "Deprecated /proc/acpi/event support"
  93         depends on PROC_FS
  94         default y
  95         ---help---
  96           A user-space daemon, acpi, typically read /proc/acpi/event
  97           and handled all ACPI sub-system generated events.
  98
  99           These events are now delivered to user-space via
 100           either the input layer, or as netlink events.
 101
 102           This build option enables the old code for legacy
 103           user-space implementation.  After some time, this will
 104           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 105
 106           Say Y here to retain the old behaviour.  Say N if your
 107           user-space is newer than kernel 2.6.23 (September 2007).
 108
 109 config ACPI_AC
 110         tristate "AC Adapter"
 111         depends on X86
 112         default y
 113         help
 114           This driver adds support for the AC Adapter object, which indicates
 115           whether a system is on AC, or not. If you have a system that can
 116           switch between A/C and battery, say Y.
 117
 118 config ACPI_BATTERY
 119         tristate "Battery"
 120         depends on X86
 121         default y
 122         help
 123           This driver adds support for battery information through
 124           /proc/acpi/battery. If you have a mobile system with a battery,
 125           say Y.
 126
 127 config ACPI_BUTTON
 128         tristate "Button"
 129         depends on INPUT
 130         default y
 131         help
 132           This driver handles events on the power, sleep and lid buttons.
 133           A daemon reads /proc/acpi/event and perform user-defined actions
 134           such as shutting down the system.  This is necessary for
 135           software controlled poweroff.
 136
 137 config ACPI_VIDEO
 138         tristate "Video"
 139         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 140         depends on INPUT
 141         select THERMAL
 142         help
 143           This driver implement the ACPI Extensions For Display Adapters
 144           for integrated graphics devices on motherboard, as specified in
 145           ACPI 2.0 Specification, Appendix B, allowing to perform some basic
 146           control like defining the video POST device, retrieving EDID information
 147           or to setup a video output, etc.
 148           Note that this is an ref. implementation only.  It may or may not work
 149           for your integrated video device.
 150
 151 config ACPI_FAN
 152         tristate "Fan"
 153         select THERMAL
 154         default y
 155         help
 156           This driver adds support for ACPI fan devices, allowing user-mode
 157           applications to perform basic fan control (on, off, status).
 158
 159 config ACPI_DOCK
 160         bool "Dock"
 161         depends on EXPERIMENTAL
 162         help
 163           This driver adds support for ACPI controlled docking stations and removable
 164           drive bays such as the IBM ultrabay or the Dell Module Bay.
 165
 166 config ACPI_PROCESSOR
 167         tristate "Processor"
 168         select THERMAL
 169         default y
 170         help
 171           This driver installs ACPI as the idle handler for Linux, and uses
 172           ACPI C2 and C3 processor states to save power, on systems that
 173           support it.  It is required by several flavors of cpufreq
 174           Performance-state drivers.
 175
 176 config ACPI_HOTPLUG_CPU
 177         bool
 178         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 179         select ACPI_CONTAINER
 180         default y
 181
 182 config ACPI_THERMAL
 183         tristate "Thermal Zone"
 184         depends on ACPI_PROCESSOR
 185         select THERMAL
 186         default y
 187         help
 188           This driver adds support for ACPI thermal zones.  Most mobile and
 189           some desktop systems support ACPI thermal zones.  It is HIGHLY
 190           recommended that this option be enabled, as your processor(s)
 191           may be damaged without it.
 192
 193 config ACPI_NUMA
 194         bool "NUMA support"
 195         depends on NUMA
 196         depends on (X86 || IA64)
 197         default y if IA64_GENERIC || IA64_SGI_SN2
 198
 199 config ACPI_CUSTOM_DSDT_FILE
 200         string "Custom DSDT Table file to include"
 201         default ""
 202         depends on !STANDALONE
 203         help
 204           This option supports a custom DSDT by linking it into the kernel.
 205           See Documentation/acpi/dsdt-override.txt
 206
 207           Enter the full path name to the file which includes the AmlCode
 208           declaration.
 209
 210           If unsure, don't enter a file name.
 211
 212 config ACPI_CUSTOM_DSDT
 213         bool
 214         default ACPI_CUSTOM_DSDT_FILE != ""
 215
 216 config ACPI_BLACKLIST_YEAR
 217         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 218         default 0
 219         help
 220           enter a 4-digit year, eg. 2001 to disable ACPI by default
 221           on platforms with DMI BIOS date before January 1st that year.
 222           "acpi=force" can be used to override this mechanism.
 223
 224           Enter 0 to disable this mechanism and allow ACPI to
 225           run by default no matter what the year.  (default)
 226
 227 config ACPI_DEBUG
 228         bool "Debug Statements"
 229         default n
 230         help
 231           The ACPI subsystem can produce debug output.  Saying Y enables this
 232           output and increases the kernel size by around 50K.
 233
 234           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 235           parameters documented in Documentation/acpi/debug.txt and
 236           Documentation/kernel-parameters.txt to control the type and
 237           amount of debug output.
 238
 239 config ACPI_DEBUG_FUNC_TRACE
 240         bool "Additionally enable ACPI function tracing"
 241         default n
 242         depends on ACPI_DEBUG
 243         help
 244           ACPI Debug Statements slow down ACPI processing. Function trace
 245           is about half of the penalty and is rarely useful.
 246
 247 config ACPI_PCI_SLOT
 248         tristate "PCI slot detection driver"
 249         default n
 250         help
 251           This driver will attempt to discover all PCI slots in your system,
 252           and creates entries in /sys/bus/pci/slots/. This feature can
 253           help you correlate PCI bus addresses with the physical geography
 254           of your slots. If you are unsure, say N.
 255
 256 config ACPI_SYSTEM
 257         bool
 258         default y
 259         help
 260           This driver will enable your system to shut down using ACPI, and
 261           dump your ACPI DSDT table using /proc/acpi/dsdt.
 262
 263 config X86_PM_TIMER
 264         bool "Power Management Timer Support" if EMBEDDED
 265         depends on X86
 266         default y
 267         help
 268           The Power Management Timer is available on all ACPI-capable,
 269           in most cases even if ACPI is unusable or blacklisted.
 270
 271           This timing source is not affected by power management features
 272           like aggressive processor idling, throttling, frequency and/or
 273           voltage scaling, unlike the commonly used Time Stamp Counter
 274           (TSC) timing source.
 275
 276           You should nearly always say Y here because many modern
 277           systems require this timer.
 278
 279 config ACPI_CONTAINER
 280         tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
 281         depends on EXPERIMENTAL
 282         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 283          ---help---
 284           This allows _physical_ insertion and removal of CPUs and memory.
 285           This can be useful, for example, on NUMA machines that support
 286           ACPI based physical hotplug of nodes, or non-NUMA machines that
 287           support physical cpu/memory hot-plug.
 288
 289           If one selects "m", this driver can be loaded with
 290           "modprobe acpi_container".
 291
 292 config ACPI_HOTPLUG_MEMORY
 293         tristate "Memory Hotplug"
 294         depends on MEMORY_HOTPLUG
 295         default n
 296         help
 297           This driver adds supports for ACPI Memory Hotplug.  This driver
 298           provides support for fielding notifications on ACPI memory
 299           devices (PNP0C80) which represent memory ranges that may be
 300           onlined or offlined during runtime.
 301
 302           Enabling this driver assumes that your platform hardware
 303           and firmware have support for hot-plugging physical memory. If
 304           your system does not support physically adding or ripping out
 305           memory DIMMs at some platform defined granularity (individually
 306           or as a bank) at runtime, then you need not enable this driver.
 307
 308           If one selects "m," this driver can be loaded using the following
 309           command:
 310                 $>modprobe acpi_memhotplug
 311
 312 config ACPI_SBS
 313         tristate "Smart Battery System"
 314         depends on X86
 315         help
 316           This driver adds support for the Smart Battery System, another
 317           type of access to battery information, found on some laptops.
 318
 319 endif   # ACPI