| # |
| # 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: |
| <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 |
| 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| they have been replaced by functions in /sys.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 <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 supports a custom DSDT by linking it into the kernel. |
| See Documentation/acpi/dsdt-override.txt |
| |
| If unsure, 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_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 |
