| # | |
| # 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| they have been replaced by functions in /sys.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| they have been replaced by functions in /sys.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 |