#
  # 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_DEBUGGER
  	bool "AML debugger interface (EXPERIMENTAL)"
  	select ACPI_DEBUG
  	help
  	  Enable in-kernel debugging of AML facilities: statistics, internal
  	  object dump, single step control method execution.
  	  This is still under development, currently enabling this only
  	  results in the compilation of the ACPICA debugger files.
  
  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_CPPC_LIB
  	bool
  	depends on ACPI_PROCESSOR
  	depends on !ACPI_CPU_FREQ_PSS
  	select MAILBOX
  	select PCC
  	help
  	  If this option is enabled, this file implements common functionality
  	  to parse CPPC tables as described in the ACPI 5.1+ spec. The
  	  routines implemented are meant to be used by other
  	  drivers to control CPU performance using CPPC semantics.
  	  If your platform does not support CPPC in firmware,
  	  leave this option disabled.
  
  config ACPI_PROCESSOR
  	tristate "Processor"
  	depends on X86 || IA64 || ARM64
  	select ACPI_PROCESSOR_IDLE if X86 || IA64
  	select ACPI_CPU_FREQ_PSS if X86 || IA64
  	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