| # |
| # ACPI Configuration |
| # |
| |
| menuconfig ACPI |
| bool "ACPI (Advanced Configuration and Power Interface) Support" |
| depends on !IA64_HP_SIM |
| depends on IA64 || X86 |
| depends on PCI |
| 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, ACPI is used. |
| |
| 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 on the |
| ACPI CA, see: |
| <http://acpica.org/> |
| |
| 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 SUSPEND || HIBERNATION |
| 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| they have been replaced by functions in /sys. |
| |
| 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 |
| 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| they have been replaced by functions in /sys.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 |
| This option, together with the proc directories, will be |
| deleted in 2.6.39. |
| |
| Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
| |
| config ACPI_EC_DEBUGFS |
| tristate "EC read/write access through /sys/kernel/debug/ec" |
| default n |
| help |
| Say N to disable Embedded Controller /sys/kernel/debug interface |
| |
| Be aware that using this interface can confuse your Embedded |
| Controller in a way that a normal reboot is not enough. You then |
| have to power off your system, and remove the laptop battery for |
| some seconds. |
| An Embedded Controller typically is available on laptops and reads |
| sensor values like battery state and temperature. |
| The kernel accesses the EC through ACPI parsed code provided by BIOS |
| tables. This option allows to access the EC directly without ACPI |
| code being involved. |
| 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 |
| select POWER_SUPPLY |
| default y |
| help |
| 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 |
| select POWER_SUPPLY |
| 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. |
| |
| 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. |
| A daemon reads /proc/acpi/event and perform user-defined actions |
| such as shutting down the system. This is necessary for |
| 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 implements the ACPI Extensions For Display Adapters |
| for integrated graphics devices on motherboard, as specified in |
| 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 supports ACPI fan devices, allowing user-mode |
| applications to perform basic fan control (on, off, status). |
| |
| To compile this driver as a module, choose M here: |
| the module will be called fan. |
| |
| config ACPI_DOCK |
| bool "Dock" |
| help |
| This driver supports ACPI-controlled docking stations and removable |
| drive bays such as the IBM Ultrabay and the Dell Module Bay. |
| |
| config ACPI_I2C |
| def_tristate I2C |
| depends on I2C |
| help |
| ACPI I2C enumeration support. |
| |
| config ACPI_PROCESSOR |
| tristate "Processor" |
| select THERMAL |
| select CPU_IDLE |
| 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. |
| |
| To compile this driver as a module, choose M here: |
| the module will be called processor. |
| config ACPI_IPMI |
| tristate "IPMI" |
| depends on IPMI_SI && IPMI_HANDLER |
| default n |
| help |
| This driver enables the ACPI to access the BMC controller. And it |
| uses the IPMI request/response message to communicate with BMC |
| controller, which can be found on on the server. |
| |
| To compile this driver as a module, choose M here: |
| the module will be called as acpi_ipmi. |
| |
| config ACPI_HOTPLUG_CPU |
| bool |
| depends on ACPI_PROCESSOR && HOTPLUG_CPU |
| select ACPI_CONTAINER |
| default y |
| |
| config ACPI_PROCESSOR_AGGREGATOR |
| tristate "Processor Aggregator" |
| depends on ACPI_PROCESSOR |
| 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 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_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_INITRD_TABLE_OVERRIDE |
| bool "ACPI tables override via initrd" |
| depends on BLK_DEV_INITRD && X86 |
| default n |
| help |
| This option provides functionality to override arbitrary ACPI tables |
| via initrd. No functional change if no ACPI tables are passed via |
| initrd, therefore it's safe to say Y. |
| See Documentation/acpi/initrd_table_override.txt for details |
| |
| 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, 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. |
| |
| 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 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_PCI_SLOT |
| bool "PCI slot detection driver" |
| depends on SYSFS |
| default n |
| help |
| 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 X86_PM_TIMER |
| bool "Power Management Timer Support" if EXPERT |
| 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 |
| bool "Container and Module Devices" |
| default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
| help |
| This driver supports ACPI Container and Module devices (IDs |
| ACPI0004, PNP0A05, and PNP0A06). |
| |
| 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 |
| bool "Memory Hotplug" |
| depends on MEMORY_HOTPLUG |
| help |
| 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. |
| |
| If your hardware and firmware do not support adding or |
| removing memory devices at runtime, you need not enable |
| this driver. |
| |
| To compile this driver as a module, choose M here: |
| the module will be called acpi_memhotplug. |
| |
| config ACPI_SBS |
| tristate "Smart Battery System" |
| depends on X86 |
| select POWER_SUPPLY |
| help |
| 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. |
| |
| config ACPI_CUSTOM_METHOD |
| tristate "Allow ACPI methods to be inserted/replaced at run time" |
| depends on DEBUG_FS |
| default n |
| help |
| This debug facility allows ACPI AML methods to be inserted and/or |
| replaced without rebooting the system. For details refer to: |
| Documentation/acpi/method-customizing.txt. |
| |
| NOTE: This option is security sensitive, because it allows arbitrary |
| kernel memory to be written to by root (uid=0) users, allowing them |
| to bypass certain security measures (e.g. if root is not allowed to |
| load additional kernel modules after boot, this feature may be used |
| to override that restriction). |
| |
| config ACPI_BGRT |
| bool "Boottime Graphics Resource Table support" |
| depends on EFI && X86 |
| help |
| This driver adds support for exposing the ACPI Boottime Graphics |
| Resource Table, which allows the operating system to obtain |
| data from the firmware boot splash. It will appear under |
| /sys/firmware/acpi/bgrt/ . |
| |
| source "drivers/acpi/apei/Kconfig" |
| |
| endif # ACPI |
