diff options
Diffstat (limited to 'drivers/acpi/Kconfig')
| -rw-r--r-- | drivers/acpi/Kconfig | 338 |
1 files changed, 207 insertions, 131 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 8a851d0f438..a34a2284100 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -7,13 +7,11 @@ menuconfig ACPI depends on !IA64_HP_SIM depends on IA64 || X86 depends on PCI - depends on PM select PNP - select CPU_IDLE default y - ---help--- + help Advanced Configuration and Power Interface (ACPI) support for - Linux requires an ACPI compliant platform (hardware/firmware), + 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. @@ -23,21 +21,24 @@ menuconfig ACPI 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. + are configured, ACPI is 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> + The project home page for the Linux ACPI subsystem is here: + <https://01.org/linux-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: + Component Architecture (ACPI CA). For more information on the + ACPI CA, see: + <http://acpica.org/> + + ACPI is an open industry specification originally co-developed by + Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently, + it is developed by the ACPI Specification Working Group (ASWG) under + the UEFI Forum and any UEFI member can join the ASWG and contribute + to the ACPI specification. + The specification is available at: <http://www.acpi.info> + <http://www.uefi.org/acpi/specs> if ACPI @@ -46,31 +47,10 @@ config ACPI_SLEEP 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. - 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--- + help For backwards compatibility, this option allows deprecated power /proc/acpi/ directories to exist, even when they have been replaced by functions in /sys. @@ -79,100 +59,125 @@ config ACPI_PROCFS_POWER /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 the future. 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_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_AC tristate "AC Adapter" depends on X86 + select POWER_SUPPLY 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 + 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. + This driver handles events on the power, sleep, and lid buttons. + A daemon reads events from input devices or via netlink and + performs 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 X86 && BACKLIGHT_CLASS_DEVICE depends on INPUT select THERMAL help - This driver implement the ACPI Extensions For Display Adapters + This driver implements 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. + 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 adds support for ACPI fan devices, allowing user-mode + 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" - depends on EXPERIMENTAL help - This driver adds support for ACPI controlled docking stations and removable - drive bays such as the IBM ultrabay or the Dell Module Bay. + This driver supports ACPI-controlled docking stations and removable + drive bays such as the IBM Ultrabay and the Dell Module Bay. 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 + 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. + 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 + 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 @@ -180,17 +185,31 @@ config ACPI_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 adds support for ACPI thermal zones. Most mobile and + 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 @@ -214,16 +233,15 @@ config ACPI_CUSTOM_DSDT bool default ACPI_CUSTOM_DSDT_FILE != "" -config ACPI_BLACKLIST_YEAR - int "Disable ACPI for systems before Jan 1st this year" if X86_32 - default 0 +config ACPI_INITRD_TABLE_OVERRIDE + bool "ACPI tables override via initrd" + depends on BLK_DEV_INITRD && X86 + default n 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) + 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_DEBUG bool "Debug Statements" @@ -237,25 +255,18 @@ config ACPI_DEBUG Documentation/kernel-parameters.txt to control the type and amount of debug output. -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_PCI_SLOT - tristate "PCI slot detection driver" + bool "PCI slot detection driver" + depends on SYSFS default n help - This driver will attempt to discover all PCI slots in your system, - and creates entries in /sys/bus/pci/slots/. This feature can - help you correlate PCI bus addresses with the physical geography - of your slots. If you are unsure, say N. + 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 EMBEDDED + bool "Power Management Timer Support" if EXPERT depends on X86 default y help @@ -271,43 +282,108 @@ config X86_PM_TIMER 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 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 - tristate "Memory Hotplug" + bool "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. + 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. - 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 your hardware and firmware do not support adding or + removing memory devices at runtime, you need not enable + this driver. - If one selects "m," this driver can be loaded using the following - command: - $>modprobe acpi_memhotplug + 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 adds support for the Smart Battery System, another + 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/ . + +config ACPI_REDUCED_HARDWARE_ONLY + bool "Hardware-reduced ACPI support only" if EXPERT + def_bool n + depends on ACPI + help + This config item changes the way the ACPI code is built. When this + option is selected, the kernel will use a specialized version of + ACPICA that ONLY supports the ACPI "reduced hardware" mode. The + resulting kernel will be smaller but it will also be restricted to + running in ACPI reduced hardware mode ONLY. + + If you are unsure what to do, do not enable this option. + +source "drivers/acpi/apei/Kconfig" + +config ACPI_EXTLOG + tristate "Extended Error Log support" + depends on X86_MCE && X86_LOCAL_APIC + select UEFI_CPER + default n + help + Certain usages such as Predictive Failure Analysis (PFA) require + more information about the error than what can be described in + processor machine check banks. Most server processors log + additional information about the error in processor uncore + registers. Since the addresses and layout of these registers vary + widely from one processor to another, system software cannot + readily make use of them. To complicate matters further, some of + the additional error information cannot be constructed without + detailed knowledge about platform topology. + + Enhanced MCA Logging allows firmware to provide additional error + information to system software, synchronous with MCE or CMCI. This + driver adds support for that functionality. + endif # ACPI |