# # ACPI Configuration # 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 config ACPI bool "ACPI Support" depends on IA64 || X86 depends on PCI depends on PM 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: Linux support for ACPI is based on Intel Corporation's ACPI Component Architecture (ACPI CA). For more information see: ACPI is an open industry specification co-developed by Compaq, Intel, Microsoft, Phoenix, and Toshiba. The specification is available at: 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_HOTKEY tristate "Generic Hotkey (EXPERIMENTAL)" depends on EXPERIMENTAL depends on X86 default n help Experimental consolidated hotkey driver. If you are unsure, say N. 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 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 . 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 and . 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_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 . 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