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linux-next/drivers/acpi/Kconfig
Linus Torvalds 12f03ee606 libnvdimm for 4.3: 
1/ Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
    mechanism for adding device-driver-discovered memory regions to the
    kernel's direct map.  This facility is used by the pmem driver to
    enable pfn_to_page() operations on the page frames returned by DAX
    ('direct_access' in 'struct block_device_operations'). For now, the
    'memmap' allocation for these "device" pages comes from "System
    RAM".  Support for allocating the memmap from device memory will
    arrive in a later kernel.
 
 2/ Introduce memremap() to replace usages of ioremap_cache() and
    ioremap_wt().  memremap() drops the __iomem annotation for these
    mappings to memory that do not have i/o side effects.  The
    replacement of ioremap_cache() with memremap() is limited to the
    pmem driver to ease merging the api change in v4.3.  Completion of
    the conversion is targeted for v4.4.
 
 3/ Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
    driver, update the VFS DAX implementation and PMEM api to provide
    persistence guarantees for kernel operations on a DAX mapping.
 
 4/ Convert the ACPI NFIT 'BLK' driver to map the block apertures as
    cacheable to improve performance.
 
 5/ Miscellaneous updates and fixes to libnvdimm including support
    for issuing "address range scrub" commands, clarifying the optimal
    'sector size' of pmem devices, a clarification of the usage of the
    ACPI '_STA' (status) property for DIMM devices, and other minor
    fixes.
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Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "This update has successfully completed a 0day-kbuild run and has
  appeared in a linux-next release.  The changes outside of the typical
  drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the
  removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and
  the introduction of ZONE_DEVICE + devm_memremap_pages().

  Summary:

   - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
     mechanism for adding device-driver-discovered memory regions to the
     kernel's direct map.

     This facility is used by the pmem driver to enable pfn_to_page()
     operations on the page frames returned by DAX ('direct_access' in
     'struct block_device_operations').

     For now, the 'memmap' allocation for these "device" pages comes
     from "System RAM".  Support for allocating the memmap from device
     memory will arrive in a later kernel.

   - Introduce memremap() to replace usages of ioremap_cache() and
     ioremap_wt().  memremap() drops the __iomem annotation for these
     mappings to memory that do not have i/o side effects.  The
     replacement of ioremap_cache() with memremap() is limited to the
     pmem driver to ease merging the api change in v4.3.

     Completion of the conversion is targeted for v4.4.

   - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
     driver, update the VFS DAX implementation and PMEM api to provide
     persistence guarantees for kernel operations on a DAX mapping.

   - Convert the ACPI NFIT 'BLK' driver to map the block apertures as
     cacheable to improve performance.

   - Miscellaneous updates and fixes to libnvdimm including support for
     issuing "address range scrub" commands, clarifying the optimal
     'sector size' of pmem devices, a clarification of the usage of the
     ACPI '_STA' (status) property for DIMM devices, and other minor
     fixes"

* tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits)
  libnvdimm, pmem: direct map legacy pmem by default
  libnvdimm, pmem: 'struct page' for pmem
  libnvdimm, pfn: 'struct page' provider infrastructure
  x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
  add devm_memremap_pages
  mm: ZONE_DEVICE for "device memory"
  mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
  dax: drop size parameter to ->direct_access()
  nd_blk: change aperture mapping from WC to WB
  nvdimm: change to use generic kvfree()
  pmem, dax: have direct_access use __pmem annotation
  dax: update I/O path to do proper PMEM flushing
  pmem: add copy_from_iter_pmem() and clear_pmem()
  pmem, x86: clean up conditional pmem includes
  pmem: remove layer when calling arch_has_wmb_pmem()
  pmem, x86: move x86 PMEM API to new pmem.h header
  libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option
  pmem: switch to devm_ allocations
  devres: add devm_memremap
  libnvdimm, btt: write and validate parent_uuid
  ...
2015-09-08 14:35:59 -07:00

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#
# ACPI Configuration
#
menuconfig ACPI
bool "ACPI (Advanced Configuration and Power Interface) Support"
depends on !IA64_HP_SIM
depends on IA64 || X86 || (ARM64 && EXPERT)
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:
<https://01.org/linux-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 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
config ACPI_LEGACY_TABLES_LOOKUP
bool
config ARCH_MIGHT_HAVE_ACPI_PDC
bool
config ACPI_GENERIC_GSI
bool
config ACPI_SYSTEM_POWER_STATES_SUPPORT
bool
config ACPI_CCA_REQUIRED
bool
config ACPI_SLEEP
bool
depends on SUSPEND || HIBERNATION
depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
default y
config ACPI_PROCFS_POWER
bool "Deprecated power /proc/acpi directories"
depends on X86 && 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 the future.
Say N to delete power /proc/acpi/ directories that have moved to /sys/
config ACPI_REV_OVERRIDE_POSSIBLE
bool "Allow supported ACPI revision to be overriden"
depends on X86
default y
help
The platform firmware on some systems expects Linux to return "5" as
the supported ACPI revision which makes it expose system configuration
information in a special way.
For example, based on what ACPI exports as the supported revision,
Dell XPS 13 (2015) configures its audio device to either work in HDA
mode or in I2S mode, where the former is supposed to be used on Linux
until the latter is fully supported (in the kernel as well as in user
space).
This option enables a DMI-based quirk for the above Dell machine (so
that HDA audio is exposed by the platform firmware to the kernel) and
makes it possible to force the kernel to return "5" as the supported
ACPI revision via the "acpi_rev_override" command line switch.
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 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 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
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"
depends on 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_CPU_FREQ_PSS
bool
select THERMAL
config ACPI_PROCESSOR_IDLE
bool
select CPU_IDLE
config ACPI_PROCESSOR
tristate "Processor"
depends on X86 || IA64
select ACPI_PROCESSOR_IDLE
select ACPI_CPU_FREQ_PSS
default y
help
This driver adds support for the ACPI Processor package. It is required
by several flavors of cpufreq performance-state, thermal, throttling and
idle 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
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_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_HOTPLUG_IOAPIC
bool
depends on PCI
depends on X86_IO_APIC
default y
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/ .
config ACPI_REDUCED_HARDWARE_ONLY
bool "Hardware-reduced ACPI support only" if EXPERT
def_bool n
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.
config ACPI_NFIT
tristate "ACPI NVDIMM Firmware Interface Table (NFIT)"
depends on PHYS_ADDR_T_64BIT
depends on BLK_DEV
depends on ARCH_HAS_MMIO_FLUSH
select LIBNVDIMM
help
Infrastructure to probe ACPI 6 compliant platforms for
NVDIMMs (NFIT) and register a libnvdimm device tree. In
addition to storage devices this also enables libnvdimm to pass
ACPI._DSM messages for platform/dimm configuration.
To compile this driver as a module, choose M here:
the module will be called nfit.
config ACPI_NFIT_DEBUG
bool "NFIT DSM debug"
depends on ACPI_NFIT
depends on DYNAMIC_DEBUG
default n
help
Enabling this option causes the nfit driver to dump the
input and output buffers of _DSM operations on the ACPI0012
device and its children. This can be very verbose, so leave
it disabled unless you are debugging a hardware / firmware
issue.
source "drivers/acpi/apei/Kconfig"
config ACPI_EXTLOG
tristate "Extended Error Log support"
depends on X86_MCE && X86_LOCAL_APIC
select UEFI_CPER
select RAS
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 with corresponding
tracepoint which carries that information to userspace.
menuconfig PMIC_OPREGION
bool "PMIC (Power Management Integrated Circuit) operation region support"
help
Select this option to enable support for ACPI operation
region of the PMIC chip. The operation region can be used
to control power rails and sensor reading/writing on the
PMIC chip.
if PMIC_OPREGION
config CRC_PMIC_OPREGION
bool "ACPI operation region support for CrystalCove PMIC"
depends on INTEL_SOC_PMIC
help
This config adds ACPI operation region support for CrystalCove PMIC.
config XPOWER_PMIC_OPREGION
bool "ACPI operation region support for XPower AXP288 PMIC"
depends on AXP288_ADC = y
help
This config adds ACPI operation region support for XPower AXP288 PMIC.
endif
endif # ACPI
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