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# ACPI Configuration
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menu "ACPI (Advanced Configuration and Power Interface) Support"
depends on !X86_NUMAQ
depends on !X86_VISWS
depends on !IA64_HP_SIM
depends on IA64 || X86
depends on PM
config ACPI
bool "ACPI Support"
depends on IA64 || X86
depends on PCI
depends on PM
select PNP
default y
---help---
Advanced Configuration and Power Interface (ACPI) support for
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.
Linux ACPI provides a robust functional replacement for several
legacy configuration and power management interfaces, including
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.
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>
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>
ACPI is an open industry specification co-developed by Compaq,
Intel, Microsoft, Phoenix, and Toshiba. The specification is
available at:
<http://www.acpi.info>
if ACPI
config ACPI_SLEEP
bool "Sleep States"
depends on X86 && (!SMP || SUSPEND_SMP)
depends on PM
default y
---help---
This option adds support for ACPI suspend states.
With this option, you will be able to put the system "to sleep".
Sleep states are low power states for the system and devices. All
of the system operating state is saved to either memory or disk
(depending on the state), to allow the system to resume operation
quickly at your request.
Although this option sounds really nifty, barely any of the device
drivers have been converted to the new driver model and hence few
have proper power management support.
This option is not recommended for anyone except those doing driver
power management development.
config ACPI_SLEEP_PROC_FS
bool
depends on ACPI_SLEEP && PROC_FS
default y
config ACPI_SLEEP_PROC_SLEEP
bool "/proc/acpi/sleep (deprecated)"
depends on ACPI_SLEEP_PROC_FS
default n
---help---
Create /proc/acpi/sleep
Deprecated by /sys/power/state
config ACPI_PROCFS
bool "Procfs interface (deprecated)"
depends on ACPI
default y
---help---
Procfs interface for ACPI is made optional for back-compatible.
As the same functions are duplicated in sysfs interface
and this proc interface will be removed some time later,
it's marked as deprecated.
( /proc/acpi/debug_layer && debug_level are deprecated by
/sys/module/acpi/parameters/debug_layer && debug_level.
/proc/acpi/info is deprecated by
/sys/module/acpi/parameters/acpica_version )
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
switch between A/C and battery, say Y.
config ACPI_BATTERY
tristate "Battery"
depends on X86
default y
help
This driver adds support for battery information through
/proc/acpi/battery. If you have a mobile system with a battery,
say Y.
config ACPI_BUTTON
tristate "Button"
depends on INPUT
default y
help
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.
config ACPI_VIDEO
tristate "Video"
depends on X86 && BACKLIGHT_CLASS_DEVICE
help
This driver implement 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.
config ACPI_FAN
tristate "Fan"
default y
help
This driver adds support for 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
config ACPI_BAY
tristate "Removable Drive Bay (EXPERIMENTAL)"
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.
config ACPI_PROCESSOR
tristate "Processor"
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
support it. It is required by several flavors of cpufreq
Performance-state drivers.
config ACPI_HOTPLUG_CPU
bool
depends on ACPI_PROCESSOR && HOTPLUG_CPU
select ACPI_CONTAINER
default y
config ACPI_THERMAL
tristate "Thermal Zone"
depends on ACPI_PROCESSOR
default y
help
This driver adds support for 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.
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_IBM
tristate "IBM ThinkPad Laptop Extras"
depends on X86
select BACKLIGHT_CLASS_DEVICE
---help---
This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
support for Fn-Fx key combinations, Bluetooth control, video
output switching, ThinkLight control, UltraBay eject and more.
For more information about this driver see <file:Documentation/ibm-acpi.txt>
and <http://ibm-acpi.sf.net/> .
If you have an IBM ThinkPad laptop, say Y or M here.
config ACPI_IBM_DOCK
bool "Legacy Docking Station Support"
depends on ACPI_IBM
depends on ACPI_DOCK=n
default n
---help---
Allows the ibm_acpi driver to handle docking station events.
This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI. It will
allow locking and removing the laptop from the docking station,
but will not properly connect PCI devices.
If you are not sure, say N here.
config ACPI_IBM_BAY
bool "Legacy Removable Bay Support"
depends on ACPI_IBM
default y
---help---
Allows the ibm_acpi driver to handle removable bays. It will allow
disabling the device in the bay, and also generate notifications when
the bay lever is ejected or inserted.
If you are not sure, say Y here.
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 ""
help
Enter the full path name to the file which includes the AmlCode
declaration.
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
on platforms with DMI BIOS date before January 1st that year.
"acpi=force" can be used to override this mechanism.
Enter 0 to disable this mechanism and allow ACPI to
run by default no matter what the year. (default)
config ACPI_DEBUG
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.
config ACPI_EC
bool
default y
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.
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.
config X86_PM_TIMER
bool "Power Management Timer Support" if EMBEDDED
depends on X86
default y
help
The Power Management Timer is available on all ACPI-capable,
in most cases even if ACPI is unusable or blacklisted.
This timing source is not affected by power management features
like aggressive processor idling, throttling, frequency and/or
voltage scaling, unlike the commonly used Time Stamp Counter
(TSC) timing source.
You should nearly always say Y here because many modern
systems require this timer.
config ACPI_CONTAINER
tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (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.
If one selects "m", this driver can be loaded with
"modprobe acpi_container".
config ACPI_HOTPLUG_MEMORY
tristate "Memory Hotplug"
depends on ACPI
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.
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 one selects "m," this driver can be loaded using the following
command:
$>modprobe acpi_memhotplug
config ACPI_SBS
tristate "Smart Battery System (EXPERIMENTAL)"
depends on X86 && I2C
depends on EXPERIMENTAL
help
This driver adds support for the Smart Battery System.
Depends on I2C (Device Drivers ---> I2C support)
A "Smart Battery" is quite old and quite rare compared
to today's ACPI "Control Method" battery.
endif # ACPI
endmenu
