# # ACPI Configuration # menuconfig ACPI bool "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 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: 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 depends on PM_SLEEP default y config ACPI_PROCFS bool "Deprecated /proc/acpi files" depends on PROC_FS ---help--- For backwards compatibility, this option allows deprecated /proc/acpi/ files to exist, even when they have been replaced by functions in /sys.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/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) 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For backwards compatibility, this option allows deprecated power /proc/acpi/ directories to exist, even when they have been replaced by functions in /sys.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_SYSFS_POWER bool "Future power /sys interface" select POWER_SUPPLY default y ---help--- Say N to disable power /sys interface config ACPI_PROC_EVENT bool "Deprecated /proc/acpi/event support" depends on PROC_FS default y ---help--- A user-space daemon, acpi, typically read /proc/acpi/event and handled all ACPI sub-system generated events. These events are now delivered to user-space via either 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 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 && VIDEO_OUTPUT_CONTROL depends on INPUT 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 select THERMAL 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_WMI tristate "WMI (EXPERIMENTAL)" depends on X86 depends on EXPERIMENTAL help This driver adds support for the ACPI-WMI (Windows Management Instrumentation) mapper device (PNP0C14) found on some systems. ACPI-WMI is a proprietary extension to ACPI to expose parts of the ACPI firmware to userspace - this is done through various vendor defined methods and data blocks in a PNP0C14 device, which are then made available for userspace to call. The implementation of this in Linux currently only exposes this to other kernel space drivers. This driver is a required dependency to build the firmware specific drivers needed on many machines, including Acer and HP laptops. It is safe to enable this driver even if your DSDT doesn't define any ACPI-WMI devices. 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_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_FILE string "Custom DSDT Table file to include" 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_CUSTOM_DSDT_INITRD bool "Read Custom DSDT from initramfs" depends on BLK_DEV_INITRD default n help This option supports a custom DSDT by optionally loading it from initrd. See Documentation/acpi/dsdt-override.txt If you are not using this feature now, but may use it later, it is safe to say Y here. 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_DEBUG_FUNC_TRACE bool "Additionally enable ACPI function tracing" default n depends on ACPI_DEBUG help 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 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 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" depends on X86 help This driver adds support for the Smart Battery System, another type of access to battery information, found on some laptops. endif # ACPI