# SPDX-License-Identifier: GPL-2.0## ACPI Configuration# config ARCH_SUPPORTS_ACPI	bool menuconfig ACPI	bool "ACPI (Advanced Configuration and Power Interface) Support"	depends on ARCH_SUPPORTS_ACPI	select AUXILIARY_BUS	select PNP	select NLS	select CRC32	select FIRMWARE_TABLE	default y if X86	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. 	  Linux support for ACPI is based on Intel Corporation's ACPI	  Component Architecture (ACPI CA).  For more information on the	  ACPI CA, see:	  <https://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:	  <https://uefi.org/specifications> 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_TABLE_LIB	bool config ACPI_THERMAL_LIB       depends on THERMAL       bool config ACPI_DEBUGGER	bool "AML debugger interface"	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. if ACPI_DEBUGGER config ACPI_DEBUGGER_USER	tristate "Userspace debugger accessibility"	depends on DEBUG_FS	help	  Export /sys/kernel/debug/acpi/acpidbg for userspace utilities	  to access the debugger functionalities. endif config ACPI_SPCR_TABLE	bool "ACPI Serial Port Console Redirection Support"	default y if X86	help	  Enable support for Serial Port Console Redirection (SPCR) Table.	  This table provides information about the configuration of the	  earlycon console. config ACPI_FPDT	bool "ACPI Firmware Performance Data Table (FPDT) support"	depends on X86_64 || ARM64 || LOONGARCH	help	  Enable support for the Firmware Performance Data Table (FPDT).	  This table provides information on the timing of the system	  boot, S3 suspend and S3 resume firmware code paths. config ACPI_LPIT	bool	depends on X86_64	default y config ACPI_SLEEP	bool	depends on SUSPEND || HIBERNATION	depends on ACPI_SYSTEM_POWER_STATES_SUPPORT	default y config ACPI_REV_OVERRIDE_POSSIBLE	bool "Allow supported ACPI revision to be overridden"	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	bool "Embedded Controller"	depends on HAS_IOPORT	default X86 || LOONGARCH	help	  This driver handles communication with the microcontroller	  on many x86/LoongArch laptops and other machines. config ACPI_EC_DEBUGFS	tristate "EC read/write access through /sys/kernel/debug/ec"	depends on ACPI_EC	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"	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"	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_TINY_POWER_BUTTON	tristate "Tiny Power Button Driver"	depends on !ACPI_BUTTON	help	  This driver provides a tiny alternative to the ACPI Button driver.	  The tiny power button driver only handles the power button. Rather	  than notifying userspace via the input layer or a netlink event, this	  driver directly signals the init process to shut down. 	  This driver is particularly suitable for cloud and VM environments,	  which use a simulated power button to initiate a controlled poweroff,	  but which may not want to run a separate userspace daemon to process	  input events. config ACPI_TINY_POWER_BUTTON_SIGNAL	int "Tiny Power Button Signal"	depends on ACPI_TINY_POWER_BUTTON	default 38	help	  Default signal to send to init in response to the power button. 	  Likely values here include 38 (SIGRTMIN+4) to power off, or 2	  (SIGINT) to simulate Ctrl+Alt+Del. config ACPI_VIDEO	tristate "Video"	depends on BACKLIGHT_CLASS_DEVICE	depends on INPUT	depends on ACPI_WMI || !X86	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_TAD	tristate "ACPI Time and Alarm (TAD) Device Support"	depends on SYSFS && PM_SLEEP	help	  The ACPI Time and Alarm (TAD) device is an alternative to the Real	  Time Clock (RTC).  Its wake timers allow the system to transition from	  the S3 (or optionally S4/S5) state to S0 state after a time period	  elapses.  In comparison with the RTC Alarm, the TAD provides a larger	  scale of flexibility in the wake timers.  The time capabilities of the	  TAD maintain the time of day information across platform power	  transitions, and keep track of time even when the platform is turned	  off. 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 config ACPI_PROCESSOR_CSTATE	def_bool y	depends on ACPI_PROCESSOR	depends on X86 config ACPI_PROCESSOR_IDLE	bool	select CPU_IDLE config ACPI_MCFG	bool config ACPI_CPPC_LIB	bool	depends on ACPI_PROCESSOR	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 || ARM64 || LOONGARCH || RISCV	select ACPI_PROCESSOR_IDLE	select ACPI_CPU_FREQ_PSS if X86 || LOONGARCH	select THERMAL	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_HANDLER	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 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 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	select ACPI_THERMAL_LIB	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_PLATFORM_PROFILE	tristate 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. 	  Enter the full path name to the file which includes the AmlCode	  or dsdt_aml_code declaration. 	  If unsure, don't enter a file name. config ACPI_CUSTOM_DSDT	bool	default ACPI_CUSTOM_DSDT_FILE != "" config ARCH_HAS_ACPI_TABLE_UPGRADE	def_bool n config ACPI_TABLE_UPGRADE	bool "Allow upgrading ACPI tables via initrd"	depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE	default y	help	  This option provides functionality to upgrade 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/admin-guide/acpi/initrd_table_override.rst for details config ACPI_TABLE_OVERRIDE_VIA_BUILTIN_INITRD	bool "Override ACPI tables from built-in initrd"	depends on ACPI_TABLE_UPGRADE	depends on INITRAMFS_SOURCE!="" && INITRAMFS_COMPRESSION_NONE	help	  This option provides functionality to override arbitrary ACPI tables	  from built-in uncompressed initrd. 	  See Documentation/admin-guide/acpi/initrd_table_override.rst for details config ACPI_DEBUG	bool "Debug Statements"	default y	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/firmware-guide/acpi/debug.rst and	  Documentation/admin-guide/kernel-parameters.rst to control the type and	  amount of debug output. config ACPI_PCI_SLOT	bool "PCI slot detection driver"	depends on SYSFS && PCI	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 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. 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. 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 && ACPI_EC	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	bool "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_BGRT	bool "Boottime Graphics Resource Table support"	depends on EFI	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	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_NHLT	bool source "drivers/acpi/nfit/Kconfig"source "drivers/acpi/numa/Kconfig"source "drivers/acpi/apei/Kconfig"source "drivers/acpi/dptf/Kconfig" config ACPI_WATCHDOG	bool config ACPI_EXTLOG	tristate "Extended Error Log support"	depends on X86_MCE && X86_LOCAL_APIC && EDAC	select UEFI_CPER	select ACPI_APEI	select ACPI_APEI_GHES	help

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