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, ACPI is used.
  26
  27           The project home page for the Linux ACPI subsystem is here:
  28           <http://www.lesswatts.org/projects/acpi/>
  29
  30           Linux support for ACPI is based on Intel Corporation's ACPI
  31           Component Architecture (ACPI CA).  For more information on the
  32           ACPI CA, see:
  33           <http://acpica.org/>
  34
  35           ACPI is an open industry specification co-developed by
  36           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  37           The specification is available at:
  38           <http://www.acpi.info>
  39
  40 if ACPI
  41
  42 config ACPI_SLEEP
  43         bool
  44         depends on SUSPEND || HIBERNATION
  45         default y
  46
  47 config ACPI_PROCFS
  48         bool "Deprecated /proc/acpi files"
  49         depends on PROC_FS
  50         help
  51           For backwards compatibility, this option allows
  52           deprecated /proc/acpi/ files to exist, even when
  53           they have been replaced by functions in /sys.
  54           The deprecated files (and their replacements) include:
  55
  56           This option has no effect on /proc/acpi/ files
  57           and functions which do not yet exist in /sys.
  58
  59           Say N to delete /proc/acpi/ files that have moved to /sys/
  60
  61 config ACPI_PROCFS_POWER
  62         bool "Deprecated power /proc/acpi directories"
  63         depends on PROC_FS
  64         help
  65           For backwards compatibility, this option allows
  66           deprecated power /proc/acpi/ directories to exist, even when
  67           they have been replaced by functions in /sys.
  68           The deprecated directories (and their replacements) include:
  69           /proc/acpi/battery/* (/sys/class/power_supply/*)
  70           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  71           This option has no effect on /proc/acpi/ directories
  72           and functions, which do not yet exist in /sys
  73           This option, together with the proc directories, will be
  74           deleted in 2.6.39.
  75
  76           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  77
  78 config ACPI_POWER_METER
  79         tristate "ACPI 4.0 power meter"
  80         depends on HWMON
  81         help
  82           This driver exposes ACPI 4.0 power meters as hardware monitoring
  83           devices.  Say Y (or M) if you have a computer with ACPI 4.0 firmware
  84           and a power meter.
  85
  86           To compile this driver as a module, choose M here:
  87           the module will be called power-meter.
  88
  89 config ACPI_EC_DEBUGFS
  90         tristate "EC read/write access through /sys/kernel/debug/ec"
  91         default n
  92         help
  93           Say N to disable Embedded Controller /sys/kernel/debug interface
  94
  95           Be aware that using this interface can confuse your Embedded
  96           Controller in a way that a normal reboot is not enough. You then
  97           have to power off your system, and remove the laptop battery for
  98           some seconds.
  99           An Embedded Controller typically is available on laptops and reads
 100           sensor values like battery state and temperature.
 101           The kernel accesses the EC through ACPI parsed code provided by BIOS
 102           tables. This option allows to access the EC directly without ACPI
 103           code being involved.
 104           Thus this option is a debug option that helps to write ACPI drivers
 105           and can be used to identify ACPI code or EC firmware bugs.
 106
 107 config ACPI_PROC_EVENT
 108         bool "Deprecated /proc/acpi/event support"
 109         depends on PROC_FS
 110         default y
 111         help
 112           A user-space daemon, acpid, typically reads /proc/acpi/event
 113           and handles all ACPI-generated events.
 114
 115           These events are now delivered to user-space either
 116           via the input layer or as netlink events.
 117
 118           This build option enables the old code for legacy
 119           user-space implementation.  After some time, this will
 120           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 121
 122           Say Y here to retain the old behaviour.  Say N if your
 123           user-space is newer than kernel 2.6.23 (September 2007).
 124
 125 config ACPI_AC
 126         tristate "AC Adapter"
 127         depends on X86
 128         select POWER_SUPPLY
 129         default y
 130         help
 131           This driver supports the AC Adapter object, which indicates
 132           whether a system is on AC or not.  If you have a system that can
 133           switch between A/C and battery, say Y.
 134
 135           To compile this driver as a module, choose M here:
 136           the module will be called ac.
 137
 138 config ACPI_BATTERY
 139         tristate "Battery"
 140         depends on X86
 141         select POWER_SUPPLY
 142         default y
 143         help
 144           This driver adds support for battery information through
 145           /proc/acpi/battery. If you have a mobile system with a battery,
 146           say Y.
 147
 148           To compile this driver as a module, choose M here:
 149           the module will be called battery.
 150
 151 config ACPI_BUTTON
 152         tristate "Button"
 153         depends on INPUT
 154         default y
 155         help
 156           This driver handles events on the power, sleep, and lid buttons.
 157           A daemon reads /proc/acpi/event and perform user-defined actions
 158           such as shutting down the system.  This is necessary for
 159           software-controlled poweroff.
 160
 161           To compile this driver as a module, choose M here:
 162           the module will be called button.
 163
 164 config ACPI_VIDEO
 165         tristate "Video"
 166         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 167         depends on INPUT
 168         select THERMAL
 169         help
 170           This driver implements the ACPI Extensions For Display Adapters
 171           for integrated graphics devices on motherboard, as specified in
 172           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 173           such as defining the video POST device, retrieving EDID information,
 174           and setting up a video output.
 175
 176           To compile this driver as a module, choose M here:
 177           the module will be called video.
 178
 179 config ACPI_FAN
 180         tristate "Fan"
 181         select THERMAL
 182         default y
 183         help
 184           This driver supports ACPI fan devices, allowing user-mode
 185           applications to perform basic fan control (on, off, status).
 186
 187           To compile this driver as a module, choose M here:
 188           the module will be called fan.
 189
 190 config ACPI_DOCK
 191         bool "Dock"
 192         depends on EXPERIMENTAL
 193         help
 194           This driver supports ACPI-controlled docking stations and removable
 195           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 196
 197 config ACPI_PROCESSOR
 198         tristate "Processor"
 199         select THERMAL
 200         select CPU_IDLE
 201         default y
 202         help
 203           This driver installs ACPI as the idle handler for Linux and uses
 204           ACPI C2 and C3 processor states to save power on systems that
 205           support it.  It is required by several flavors of cpufreq
 206           performance-state drivers.
 207
 208           To compile this driver as a module, choose M here:
 209           the module will be called processor.
 210
 211 config ACPI_HOTPLUG_CPU
 212         bool
 213         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 214         select ACPI_CONTAINER
 215         default y
 216
 217 config ACPI_PROCESSOR_AGGREGATOR
 218         tristate "Processor Aggregator"
 219         depends on ACPI_PROCESSOR
 220         depends on EXPERIMENTAL
 221         depends on X86
 222         help
 223           ACPI 4.0 defines processor Aggregator, which enables OS to perform
 224           specific processor configuration and control that applies to all
 225           processors in the platform. Currently only logical processor idling
 226           is defined, which is to reduce power consumption. This driver
 227           supports the new device.
 228
 229 config ACPI_THERMAL
 230         tristate "Thermal Zone"
 231         depends on ACPI_PROCESSOR
 232         select THERMAL
 233         default y
 234         help
 235           This driver supports ACPI thermal zones.  Most mobile and
 236           some desktop systems support ACPI thermal zones.  It is HIGHLY
 237           recommended that this option be enabled, as your processor(s)
 238           may be damaged without it.
 239
 240           To compile this driver as a module, choose M here:
 241           the module will be called thermal.
 242
 243 config ACPI_NUMA
 244         bool "NUMA support"
 245         depends on NUMA
 246         depends on (X86 || IA64)
 247         default y if IA64_GENERIC || IA64_SGI_SN2
 248
 249 config ACPI_CUSTOM_DSDT_FILE
 250         string "Custom DSDT Table file to include"
 251         default ""
 252         depends on !STANDALONE
 253         help
 254           This option supports a custom DSDT by linking it into the kernel.
 255           See Documentation/acpi/dsdt-override.txt
 256
 257           Enter the full path name to the file which includes the AmlCode
 258           declaration.
 259
 260           If unsure, don't enter a file name.
 261
 262 config ACPI_CUSTOM_DSDT
 263         bool
 264         default ACPI_CUSTOM_DSDT_FILE != ""
 265
 266 config ACPI_BLACKLIST_YEAR
 267         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 268         default 0
 269         help
 270           Enter a 4-digit year, e.g., 2001, to disable ACPI by default
 271           on platforms with DMI BIOS date before January 1st that year.
 272           "acpi=force" can be used to override this mechanism.
 273
 274           Enter 0 to disable this mechanism and allow ACPI to
 275           run by default no matter what the year.  (default)
 276
 277 config ACPI_DEBUG
 278         bool "Debug Statements"
 279         default n
 280         help
 281           The ACPI subsystem can produce debug output.  Saying Y enables this
 282           output and increases the kernel size by around 50K.
 283
 284           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 285           parameters documented in Documentation/acpi/debug.txt and
 286           Documentation/kernel-parameters.txt to control the type and
 287           amount of debug output.
 288
 289 config ACPI_DEBUG_FUNC_TRACE
 290         bool "Additionally enable ACPI function tracing"
 291         default n
 292         depends on ACPI_DEBUG
 293         help
 294           ACPI Debug Statements slow down ACPI processing. Function trace
 295           is about half of the penalty and is rarely useful.
 296
 297 config ACPI_PCI_SLOT
 298         tristate "PCI slot detection driver"
 299         depends on SYSFS
 300         default n
 301         help
 302           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 303           slots in the system.  This can help correlate PCI bus addresses,
 304           i.e., segment/bus/device/function tuples, with physical slots in
 305           the system.  If you are unsure, say N.
 306
 307           To compile this driver as a module, choose M here:
 308           the module will be called pci_slot.
 309
 310 config X86_PM_TIMER
 311         bool "Power Management Timer Support" if EMBEDDED
 312         depends on X86
 313         default y
 314         help
 315           The Power Management Timer is available on all ACPI-capable,
 316           in most cases even if ACPI is unusable or blacklisted.
 317
 318           This timing source is not affected by power management features
 319           like aggressive processor idling, throttling, frequency and/or
 320           voltage scaling, unlike the commonly used Time Stamp Counter
 321           (TSC) timing source.
 322
 323           You should nearly always say Y here because many modern
 324           systems require this timer.
 325
 326 config ACPI_CONTAINER
 327         tristate "Container and Module Devices (EXPERIMENTAL)"
 328         depends on EXPERIMENTAL
 329         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 330         help
 331           This driver supports ACPI Container and Module devices (IDs
 332           ACPI0004, PNP0A05, and PNP0A06).
 333
 334           This helps support hotplug of nodes, CPUs, and memory.
 335
 336           To compile this driver as a module, choose M here:
 337           the module will be called container.
 338
 339 config ACPI_HOTPLUG_MEMORY
 340         tristate "Memory Hotplug"
 341         depends on MEMORY_HOTPLUG
 342         default n
 343         help
 344           This driver supports ACPI memory hotplug.  The driver
 345           fields notifications on ACPI memory devices (PNP0C80),
 346           which represent memory ranges that may be onlined or
 347           offlined during runtime.
 348
 349           If your hardware and firmware do not support adding or
 350           removing memory devices at runtime, you need not enable
 351           this driver.
 352
 353           To compile this driver as a module, choose M here:
 354           the module will be called acpi_memhotplug.
 355
 356 config ACPI_SBS
 357         tristate "Smart Battery System"
 358         depends on X86
 359         select POWER_SUPPLY
 360         help
 361           This driver supports the Smart Battery System, another
 362           type of access to battery information, found on some laptops.
 363
 364           To compile this driver as a module, choose M here:
 365           the modules will be called sbs and sbshc.
 366
 367 config ACPI_HED
 368         tristate "Hardware Error Device"
 369         help
 370           This driver supports the Hardware Error Device (PNP0C33),
 371           which is used to report some hardware errors notified via
 372           SCI, mainly the corrected errors.
 373
 374 source "drivers/acpi/apei/Kconfig"
 375
 376 endif   # ACPI