#
menuconfig ACPI
- bool "ACPI Support (Advanced Configuration and Power Interface) Support"
- depends on !X86_NUMAQ
- depends on !X86_VISWS
+ bool "ACPI (Advanced Configuration and Power Interface) Support"
depends on !IA64_HP_SIM
depends on IA64 || X86
depends on PCI
depends on PM
select PNP
+ select CPU_IDLE
default y
- ---help---
+ help
Advanced Configuration and Power Interface (ACPI) support for
- Linux requires an ACPI compliant platform (hardware/firmware),
+ Linux requires an ACPI-compliant platform (hardware/firmware),
and assumes the presence of OS-directed configuration and power
management (OSPM) software. This option will enlarge your
kernel by about 70K.
the Plug-and-Play BIOS specification (PnP BIOS), the
MultiProcessor Specification (MPS), and the Advanced Power
Management (APM) specification. If both ACPI and APM support
- are configured, whichever is loaded first shall be used.
+ are configured, ACPI is used.
- The ACPI SourceForge project contains the latest source code,
- documentation, tools, mailing list subscription, and other
- information. This project is available at:
- <http://sourceforge.net/projects/acpi>
+ The project home page for the Linux ACPI subsystem is here:
+ <http://www.lesswatts.org/projects/acpi/>
Linux support for ACPI is based on Intel Corporation's ACPI
- Component Architecture (ACPI CA). For more information see:
- <http://developer.intel.com/technology/iapc/acpi>
+ Component Architecture (ACPI CA). For more information on the
+ ACPI CA, see:
+ <http://acpica.org/>
- ACPI is an open industry specification co-developed by Compaq,
- Intel, Microsoft, Phoenix, and Toshiba. The specification is
- available at:
+ ACPI is an open industry specification co-developed by
+ Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
+ The specification is available at:
<http://www.acpi.info>
if ACPI
config ACPI_SLEEP
bool
- depends on PM_SLEEP
+ depends on SUSPEND || HIBERNATION
default y
config ACPI_PROCFS
bool "Deprecated /proc/acpi files"
depends on PROC_FS
- ---help---
+ help
For backwards compatibility, this option allows
- depricated /proc/acpi/ files to exist, even when
+ deprecated /proc/acpi/ files to exist, even when
they have been replaced by functions in /sys.
The deprecated files (and their replacements) include:
/proc/acpi/sleep (/sys/power/state)
- /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
+ /proc/acpi/info (/sys/module/acpi/parameters/acpica_version)
/proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
/proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
/proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
/proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
-
+ /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*)
+ /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/
+ cpufreq/*)
+ /proc/acpi/processor/*/throttling (/sys/class/thermal/
+ cooling_device*/*)
This option has no effect on /proc/acpi/ files
and functions which do not yet exist in /sys.
Say N to delete /proc/acpi/ files that have moved to /sys/
+config ACPI_PROCFS_POWER
+ bool "Deprecated power /proc/acpi directories"
+ depends on PROC_FS
+ default y
+ help
+ For backwards compatibility, this option allows
+ deprecated power /proc/acpi/ directories to exist, even when
+ they have been replaced by functions in /sys.
+ The deprecated directories (and their replacements) include:
+ /proc/acpi/battery/* (/sys/class/power_supply/*)
+ /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
+ This option has no effect on /proc/acpi/ directories
+ and functions, which do not yet exist in /sys
+
+ Say N to delete power /proc/acpi/ directories that have moved to /sys/
+
+config ACPI_POWER_METER
+ tristate "ACPI 4.0 power meter"
+ depends on HWMON
+ help
+ This driver exposes ACPI 4.0 power meters as hardware monitoring
+ devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware
+ and a power meter.
+
+ To compile this driver as a module, choose M here:
+ the module will be called power-meter.
+
+config ACPI_SYSFS_POWER
+ bool "Future power /sys interface"
+ select POWER_SUPPLY
+ default y
+ help
+ Say N to disable power /sys interface
+
+config ACPI_EC_DEBUGFS
+ tristate "EC read/write access through /sys/kernel/debug/ec"
+ default y
+ help
+ Say N to disable Embedded Controller /sys/kernel/debug interface
+
+ An Embedded Controller typically is available on laptops and reads
+ sensor values like battery state and temperature.
+ The kernel access the EC through ACPI parsed code provided by BIOS
+ tables.
+ Thus this option is a debug option that helps to write ACPI drivers
+ and can be used to identify ACPI code or EC firmware bugs.
+
+config ACPI_PROC_EVENT
+ bool "Deprecated /proc/acpi/event support"
+ depends on PROC_FS
+ default y
+ help
+ A user-space daemon, acpid, typically reads /proc/acpi/event
+ and handles all ACPI-generated events.
+
+ These events are now delivered to user-space either
+ via the input layer or as netlink events.
+
+ This build option enables the old code for legacy
+ user-space implementation. After some time, this will
+ be moved under CONFIG_ACPI_PROCFS, and then deleted.
+
+ Say Y here to retain the old behaviour. Say N if your
+ user-space is newer than kernel 2.6.23 (September 2007).
+
config ACPI_AC
tristate "AC Adapter"
depends on X86
default y
help
- This driver adds support for the AC Adapter object, which indicates
- whether a system is on AC, or not. If you have a system that can
+ This driver supports the AC Adapter object, which indicates
+ whether a system is on AC or not. If you have a system that can
switch between A/C and battery, say Y.
+ To compile this driver as a module, choose M here:
+ the module will be called ac.
+
config ACPI_BATTERY
tristate "Battery"
depends on X86
/proc/acpi/battery. If you have a mobile system with a battery,
say Y.
+ To compile this driver as a module, choose M here:
+ the module will be called battery.
+
config ACPI_BUTTON
tristate "Button"
depends on INPUT
default y
help
- This driver handles events on the power, sleep and lid buttons.
+ This driver handles events on the power, sleep, and lid buttons.
A daemon reads /proc/acpi/event and perform user-defined actions
such as shutting down the system. This is necessary for
- software controlled poweroff.
+ software-controlled poweroff.
+
+ To compile this driver as a module, choose M here:
+ the module will be called button.
config ACPI_VIDEO
tristate "Video"
depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
+ depends on INPUT
+ select THERMAL
help
- This driver implement the ACPI Extensions For Display Adapters
+ This driver implements the ACPI Extensions For Display Adapters
for integrated graphics devices on motherboard, as specified in
- ACPI 2.0 Specification, Appendix B, allowing to perform some basic
- control like defining the video POST device, retrieving EDID information
- or to setup a video output, etc.
- Note that this is an ref. implementation only. It may or may not work
- for your integrated video device.
+ ACPI 2.0 Specification, Appendix B. This supports basic operations
+ such as defining the video POST device, retrieving EDID information,
+ and setting up a video output.
+
+ To compile this driver as a module, choose M here:
+ the module will be called video.
config ACPI_FAN
tristate "Fan"
+ select THERMAL
default y
help
- This driver adds support for ACPI fan devices, allowing user-mode
+ This driver supports ACPI fan devices, allowing user-mode
applications to perform basic fan control (on, off, status).
-config ACPI_DOCK
- tristate "Dock"
- depends on EXPERIMENTAL
- help
- This driver adds support for ACPI controlled docking stations
+ To compile this driver as a module, choose M here:
+ the module will be called fan.
-config ACPI_BAY
- tristate "Removable Drive Bay (EXPERIMENTAL)"
+config ACPI_DOCK
+ bool "Dock"
depends on EXPERIMENTAL
- depends on ACPI_DOCK
help
- This driver adds support for ACPI controlled removable drive
- bays such as the IBM ultrabay or the Dell Module Bay.
+ This driver supports ACPI-controlled docking stations and removable
+ drive bays such as the IBM Ultrabay and the Dell Module Bay.
config ACPI_PROCESSOR
tristate "Processor"
+ select THERMAL
default y
help
- This driver installs ACPI as the idle handler for Linux, and uses
- ACPI C2 and C3 processor states to save power, on systems that
+ This driver installs ACPI as the idle handler for Linux and uses
+ ACPI C2 and C3 processor states to save power on systems that
support it. It is required by several flavors of cpufreq
- Performance-state drivers.
+ performance-state drivers.
+
+ To compile this driver as a module, choose M here:
+ the module will be called processor.
config ACPI_HOTPLUG_CPU
bool
select ACPI_CONTAINER
default y
+config ACPI_PROCESSOR_AGGREGATOR
+ tristate "Processor Aggregator"
+ depends on ACPI_PROCESSOR
+ depends on EXPERIMENTAL
+ depends on X86
+ help
+ ACPI 4.0 defines processor Aggregator, which enables OS to perform
+ specific processor configuration and control that applies to all
+ processors in the platform. Currently only logical processor idling
+ is defined, which is to reduce power consumption. This driver
+ supports the new device.
+
config ACPI_THERMAL
tristate "Thermal Zone"
depends on ACPI_PROCESSOR
+ select THERMAL
default y
help
- This driver adds support for ACPI thermal zones. Most mobile and
+ This driver supports ACPI thermal zones. Most mobile and
some desktop systems support ACPI thermal zones. It is HIGHLY
recommended that this option be enabled, as your processor(s)
may be damaged without it.
+ To compile this driver as a module, choose M here:
+ the module will be called thermal.
+
config ACPI_NUMA
bool "NUMA support"
depends on NUMA
depends on (X86 || IA64)
default y if IA64_GENERIC || IA64_SGI_SN2
-config ACPI_ASUS
- tristate "ASUS/Medion Laptop Extras"
- depends on X86
- select BACKLIGHT_CLASS_DEVICE
- ---help---
- This driver provides support for extra features of ACPI-compatible
- ASUS laptops. As some of Medion laptops are made by ASUS, it may also
- support some Medion laptops (such as 9675 for example). It makes all
- the extra buttons generate standard ACPI events that go through
- /proc/acpi/events, and (on some models) adds support for changing the
- display brightness and output, switching the LCD backlight on and off,
- and most importantly, allows you to blink those fancy LEDs intended
- for reporting mail and wireless status.
-
- Note: display switching code is currently considered EXPERIMENTAL,
- toying with these values may even lock your machine.
-
- All settings are changed via /proc/acpi/asus directory entries. Owner
- and group for these entries can be set with asus_uid and asus_gid
- parameters.
-
- More information and a userspace daemon for handling the extra buttons
- at <http://sourceforge.net/projects/acpi4asus/>.
-
- If you have an ACPI-compatible ASUS laptop, say Y or M here. This
- driver is still under development, so if your laptop is unsupported or
- something works not quite as expected, please use the mailing list
- available on the above page (acpi4asus-user@lists.sourceforge.net).
-
- NOTE: This driver is deprecated and will probably be removed soon,
- use asus-laptop instead.
-
-config ACPI_TOSHIBA
- tristate "Toshiba Laptop Extras"
- depends on X86
- select BACKLIGHT_CLASS_DEVICE
- ---help---
- This driver adds support for access to certain system settings
- on "legacy free" Toshiba laptops. These laptops can be recognized by
- their lack of a BIOS setup menu and APM support.
-
- On these machines, all system configuration is handled through the
- ACPI. This driver is required for access to controls not covered
- by the general ACPI drivers, such as LCD brightness, video output,
- etc.
-
- This driver differs from the non-ACPI Toshiba laptop driver (located
- under "Processor type and features") in several aspects.
- Configuration is accessed by reading and writing text files in the
- /proc tree instead of by program interface to /dev. Furthermore, no
- power management functions are exposed, as those are handled by the
- general ACPI drivers.
-
- More information about this driver is available at
- <http://memebeam.org/toys/ToshibaAcpiDriver>.
-
- If you have a legacy free Toshiba laptop (such as the Libretto L1
- series), say Y.
-
-config ACPI_CUSTOM_DSDT
- bool "Include Custom DSDT"
- depends on !STANDALONE
- default n
- help
- This option is to load a custom ACPI DSDT
- If you don't know what that is, say N.
-
config ACPI_CUSTOM_DSDT_FILE
string "Custom DSDT Table file to include"
- depends on ACPI_CUSTOM_DSDT
default ""
+ depends on !STANDALONE
help
+ This option supports a custom DSDT by linking it into the kernel.
+ See Documentation/acpi/dsdt-override.txt
+
Enter the full path name to the file which includes the AmlCode
declaration.
+ If unsure, don't enter a file name.
+
+config ACPI_CUSTOM_DSDT
+ bool
+ default ACPI_CUSTOM_DSDT_FILE != ""
+
config ACPI_BLACKLIST_YEAR
int "Disable ACPI for systems before Jan 1st this year" if X86_32
default 0
help
- enter a 4-digit year, eg. 2001 to disable ACPI by default
+ Enter a 4-digit year, e.g., 2001, to disable ACPI by default
on platforms with DMI BIOS date before January 1st that year.
"acpi=force" can be used to override this mechanism.
bool "Debug Statements"
default n
help
- The ACPI driver can optionally report errors with a great deal
- of verbosity. Saying Y enables these statements. This will increase
- your kernel size by around 50K.
+ The ACPI subsystem can produce debug output. Saying Y enables this
+ output and increases the kernel size by around 50K.
+
+ Use the acpi.debug_layer and acpi.debug_level kernel command-line
+ parameters documented in Documentation/acpi/debug.txt and
+ Documentation/kernel-parameters.txt to control the type and
+ amount of debug output.
config ACPI_DEBUG_FUNC_TRACE
bool "Additionally enable ACPI function tracing"
ACPI Debug Statements slow down ACPI processing. Function trace
is about half of the penalty and is rarely useful.
-config ACPI_EC
- bool
- default y
+config ACPI_PCI_SLOT
+ tristate "PCI slot detection driver"
+ depends on SYSFS
+ default n
help
- This driver is required on some systems for the proper operation of
- the battery and thermal drivers. If you are compiling for a
- mobile system, say Y.
+ This driver creates entries in /sys/bus/pci/slots/ for all PCI
+ slots in the system. This can help correlate PCI bus addresses,
+ i.e., segment/bus/device/function tuples, with physical slots in
+ the system. If you are unsure, say N.
-config ACPI_POWER
- bool
- default y
-
-config ACPI_SYSTEM
- bool
- default y
- help
- This driver will enable your system to shut down using ACPI, and
- dump your ACPI DSDT table using /proc/acpi/dsdt.
+ To compile this driver as a module, choose M here:
+ the module will be called pci_slot.
config X86_PM_TIMER
bool "Power Management Timer Support" if EMBEDDED
systems require this timer.
config ACPI_CONTAINER
- tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
+ tristate "Container and Module Devices (EXPERIMENTAL)"
depends on EXPERIMENTAL
default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
- ---help---
- This allows _physical_ insertion and removal of CPUs and memory.
- This can be useful, for example, on NUMA machines that support
- ACPI based physical hotplug of nodes, or non-NUMA machines that
- support physical cpu/memory hot-plug.
+ help
+ This driver supports ACPI Container and Module devices (IDs
+ ACPI0004, PNP0A05, and PNP0A06).
- If one selects "m", this driver can be loaded with
- "modprobe acpi_container".
+ This helps support hotplug of nodes, CPUs, and memory.
+
+ To compile this driver as a module, choose M here:
+ the module will be called container.
config ACPI_HOTPLUG_MEMORY
tristate "Memory Hotplug"
depends on MEMORY_HOTPLUG
default n
help
- This driver adds supports for ACPI Memory Hotplug. This driver
- provides support for fielding notifications on ACPI memory
- devices (PNP0C80) which represent memory ranges that may be
- onlined or offlined during runtime.
+ This driver supports ACPI memory hotplug. The driver
+ fields notifications on ACPI memory devices (PNP0C80),
+ which represent memory ranges that may be onlined or
+ offlined during runtime.
- Enabling this driver assumes that your platform hardware
- and firmware have support for hot-plugging physical memory. If
- your system does not support physically adding or ripping out
- memory DIMMs at some platform defined granularity (individually
- or as a bank) at runtime, then you need not enable this driver.
+ If your hardware and firmware do not support adding or
+ removing memory devices at runtime, you need not enable
+ this driver.
- If one selects "m," this driver can be loaded using the following
- command:
- $>modprobe acpi_memhotplug
+ To compile this driver as a module, choose M here:
+ the module will be called acpi_memhotplug.
config ACPI_SBS
- tristate "Smart Battery System (EXPERIMENTAL)"
+ tristate "Smart Battery System"
depends on X86
- depends on EXPERIMENTAL
help
- This driver adds support for the Smart Battery System.
- A "Smart Battery" is quite old and quite rare compared
- to today's ACPI "Control Method" battery.
+ This driver supports the Smart Battery System, another
+ type of access to battery information, found on some laptops.
+
+ To compile this driver as a module, choose M here:
+ the modules will be called sbs and sbshc.
+
+config ACPI_HED
+ tristate "Hardware Error Device"
+ help
+ This driver supports the Hardware Error Device (PNP0C33),
+ which is used to report some hardware errors notified via
+ SCI, mainly the corrected errors.
+
+source "drivers/acpi/apei/Kconfig"
endif # ACPI
Code Review / linux-2.6.git / blobdiff