1# SPDX-License-Identifier: GPL-2.0
  2#
  3# ACPI Configuration
  4#
  5
  6config ARCH_SUPPORTS_ACPI
  7	bool
  8
  9menuconfig ACPI
 10	bool "ACPI (Advanced Configuration and Power Interface) Support"
 11	depends on ARCH_SUPPORTS_ACPI
 
 
 12	select PNP
 13	select NLS
 14	select CRC32
 15	select FIRMWARE_TABLE
 16	default y if X86
 17	help
 18	  Advanced Configuration and Power Interface (ACPI) support for 
 19	  Linux requires an ACPI-compliant platform (hardware/firmware),
 20	  and assumes the presence of OS-directed configuration and power
 21	  management (OSPM) software.  This option will enlarge your 
 22	  kernel by about 70K.
 23
 24	  Linux ACPI provides a robust functional replacement for several 
 25	  legacy configuration and power management interfaces, including
 26	  the Plug-and-Play BIOS specification (PnP BIOS), the 
 27	  MultiProcessor Specification (MPS), and the Advanced Power 
 28	  Management (APM) specification.  If both ACPI and APM support 
 29	  are configured, ACPI is used.
 30
 
 
 
 31	  Linux support for ACPI is based on Intel Corporation's ACPI
 32	  Component Architecture (ACPI CA).  For more information on the
 33	  ACPI CA, see:
 34	  <https://acpica.org/>
 35
 36	  ACPI is an open industry specification originally co-developed by
 37	  Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
 38	  it is developed by the ACPI Specification Working Group (ASWG) under
 39	  the UEFI Forum and any UEFI member can join the ASWG and contribute
 40	  to the ACPI specification.
 41	  The specification is available at:
 42	  <https://uefi.org/specifications>
 43
 44if ACPI
 45
 46config ACPI_LEGACY_TABLES_LOOKUP
 47	bool
 48
 49config ARCH_MIGHT_HAVE_ACPI_PDC
 50	bool
 51
 52config ACPI_GENERIC_GSI
 53	bool
 54
 55config ACPI_SYSTEM_POWER_STATES_SUPPORT
 56	bool
 57
 58config ACPI_CCA_REQUIRED
 59	bool
 60
 61config ACPI_TABLE_LIB
 62	bool
 63
 64config ACPI_THERMAL_LIB
 65       depends on THERMAL
 66       bool
 67
 68config ACPI_DEBUGGER
 69	bool "AML debugger interface"
 70	select ACPI_DEBUG
 71	help
 72	  Enable in-kernel debugging of AML facilities: statistics,
 73	  internal object dump, single step control method execution.
 74	  This is still under development, currently enabling this only
 75	  results in the compilation of the ACPICA debugger files.
 76
 77if ACPI_DEBUGGER
 78
 79config ACPI_DEBUGGER_USER
 80	tristate "Userspace debugger accessibility"
 81	depends on DEBUG_FS
 82	help
 83	  Export /sys/kernel/debug/acpi/acpidbg for userspace utilities
 84	  to access the debugger functionalities.
 85
 86endif
 87
 88config ACPI_SPCR_TABLE
 89	bool "ACPI Serial Port Console Redirection Support"
 90	default y if X86
 91	help
 92	  Enable support for Serial Port Console Redirection (SPCR) Table.
 93	  This table provides information about the configuration of the
 94	  earlycon console.
 95
 96config ACPI_FPDT
 97	bool "ACPI Firmware Performance Data Table (FPDT) support"
 98	depends on X86_64 || ARM64
 99	help
100	  Enable support for the Firmware Performance Data Table (FPDT).
101	  This table provides information on the timing of the system
102	  boot, S3 suspend and S3 resume firmware code paths.
103
104config ACPI_LPIT
105	bool
106	depends on X86_64
107	default y
108
109config ACPI_SLEEP
110	bool
111	depends on SUSPEND || HIBERNATION
112	depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
113	default y
114
115config ACPI_REV_OVERRIDE_POSSIBLE
116	bool "Allow supported ACPI revision to be overridden"
117	depends on X86
118	default y
119	help
120	  The platform firmware on some systems expects Linux to return "5" as
121	  the supported ACPI revision which makes it expose system configuration
122	  information in a special way.
123
124	  For example, based on what ACPI exports as the supported revision,
125	  Dell XPS 13 (2015) configures its audio device to either work in HDA
126	  mode or in I2S mode, where the former is supposed to be used on Linux
127	  until the latter is fully supported (in the kernel as well as in user
128	  space).
129
130	  This option enables a DMI-based quirk for the above Dell machine (so
131	  that HDA audio is exposed by the platform firmware to the kernel) and
132	  makes it possible to force the kernel to return "5" as the supported
133	  ACPI revision via the "acpi_rev_override" command line switch.
134
135config ACPI_EC
136	bool "Embedded Controller"
137	depends on HAS_IOPORT
138	default X86 || LOONGARCH
139	help
140	  This driver handles communication with the microcontroller
141	  on many x86/LoongArch laptops and other machines.
 
 
142
143config ACPI_EC_DEBUGFS
144	tristate "EC read/write access through /sys/kernel/debug/ec"
145	depends on ACPI_EC
146	help
147	  Say N to disable Embedded Controller /sys/kernel/debug interface
148
149	  Be aware that using this interface can confuse your Embedded
150	  Controller in a way that a normal reboot is not enough. You then
151	  have to power off your system, and remove the laptop battery for
152	  some seconds.
153	  An Embedded Controller typically is available on laptops and reads
154	  sensor values like battery state and temperature.
155	  The kernel accesses the EC through ACPI parsed code provided by BIOS
156	  tables. This option allows to access the EC directly without ACPI
157	  code being involved.
158	  Thus this option is a debug option that helps to write ACPI drivers
159	  and can be used to identify ACPI code or EC firmware bugs.
160
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
161config ACPI_AC
162	tristate "AC Adapter"
 
163	select POWER_SUPPLY
164	default y
165	help
166	  This driver supports the AC Adapter object, which indicates
167	  whether a system is on AC or not.  If you have a system that can
168	  switch between A/C and battery, say Y.
169
170	  To compile this driver as a module, choose M here:
171	  the module will be called ac.
172
173config ACPI_BATTERY
174	tristate "Battery"
 
175	select POWER_SUPPLY
176	default y
177	help
178	  This driver adds support for battery information through
179	  /proc/acpi/battery. If you have a mobile system with a battery, 
180	  say Y.
181
182	  To compile this driver as a module, choose M here:
183	  the module will be called battery.
184
185config ACPI_BUTTON
186	tristate "Button"
187	depends on INPUT
188	default y
189	help
190	  This driver handles events on the power, sleep, and lid buttons.
191	  A daemon reads events from input devices or via netlink and
192	  performs user-defined actions such as shutting down the system.
193	  This is necessary for software-controlled poweroff.
194
195	  To compile this driver as a module, choose M here:
196	  the module will be called button.
197
198config ACPI_TINY_POWER_BUTTON
199	tristate "Tiny Power Button Driver"
200	depends on !ACPI_BUTTON
201	help
202	  This driver provides a tiny alternative to the ACPI Button driver.
203	  The tiny power button driver only handles the power button. Rather
204	  than notifying userspace via the input layer or a netlink event, this
205	  driver directly signals the init process to shut down.
206
207	  This driver is particularly suitable for cloud and VM environments,
208	  which use a simulated power button to initiate a controlled poweroff,
209	  but which may not want to run a separate userspace daemon to process
210	  input events.
211
212config ACPI_TINY_POWER_BUTTON_SIGNAL
213	int "Tiny Power Button Signal"
214	depends on ACPI_TINY_POWER_BUTTON
215	default 38
216	help
217	  Default signal to send to init in response to the power button.
218
219	  Likely values here include 38 (SIGRTMIN+4) to power off, or 2
220	  (SIGINT) to simulate Ctrl+Alt+Del.
221
222config ACPI_VIDEO
223	tristate "Video"
224	depends on BACKLIGHT_CLASS_DEVICE
225	depends on INPUT
226	depends on ACPI_WMI || !X86
227	select THERMAL
228	help
229	  This driver implements the ACPI Extensions For Display Adapters
230	  for integrated graphics devices on motherboard, as specified in
231	  ACPI 2.0 Specification, Appendix B.  This supports basic operations
232	  such as defining the video POST device, retrieving EDID information,
233	  and setting up a video output.
234
235	  To compile this driver as a module, choose M here:
236	  the module will be called video.
237
238config ACPI_FAN
239	tristate "Fan"
240	depends on THERMAL
241	default y
242	help
243	  This driver supports ACPI fan devices, allowing user-mode
244	  applications to perform basic fan control (on, off, status).
245
246	  To compile this driver as a module, choose M here:
247	  the module will be called fan.
248
249config ACPI_TAD
250	tristate "ACPI Time and Alarm (TAD) Device Support"
251	depends on SYSFS && PM_SLEEP
252	help
253	  The ACPI Time and Alarm (TAD) device is an alternative to the Real
254	  Time Clock (RTC).  Its wake timers allow the system to transition from
255	  the S3 (or optionally S4/S5) state to S0 state after a time period
256	  elapses.  In comparison with the RTC Alarm, the TAD provides a larger
257	  scale of flexibility in the wake timers.  The time capabilities of the
258	  TAD maintain the time of day information across platform power
259	  transitions, and keep track of time even when the platform is turned
260	  off.
261
262config ACPI_DOCK
263	bool "Dock"
 
264	help
265	  This driver supports ACPI-controlled docking stations and removable
266	  drive bays such as the IBM Ultrabay and the Dell Module Bay.
267
268config ACPI_CPU_FREQ_PSS
269	bool
270
271config ACPI_PROCESSOR_CSTATE
272	def_bool y
273	depends on ACPI_PROCESSOR
274	depends on X86
275
276config ACPI_PROCESSOR_IDLE
277	bool
278	select CPU_IDLE
279
280config ACPI_MCFG
281	bool
282
283config ACPI_CPPC_LIB
284	bool
285	depends on ACPI_PROCESSOR
286	select MAILBOX
287	select PCC
288	help
289	  If this option is enabled, this file implements common functionality
290	  to parse CPPC tables as described in the ACPI 5.1+ spec. The
291	  routines implemented are meant to be used by other
292	  drivers to control CPU performance using CPPC semantics.
293	  If your platform does not support CPPC in firmware,
294	  leave this option disabled.
295
296config ACPI_PROCESSOR
297	tristate "Processor"
298	depends on X86 || ARM64 || LOONGARCH || RISCV
299	select ACPI_PROCESSOR_IDLE
300	select ACPI_CPU_FREQ_PSS if X86 || LOONGARCH
301	select THERMAL
 
302	default y
303	help
304	  This driver adds support for the ACPI Processor package. It is required
305	  by several flavors of cpufreq performance-state, thermal, throttling and
306	  idle drivers.
 
307
308	  To compile this driver as a module, choose M here:
309	  the module will be called processor.
310
311config ACPI_IPMI
312	tristate "IPMI"
313	depends on IPMI_HANDLER
 
314	help
315	  This driver enables the ACPI to access the BMC controller. And it
316	  uses the IPMI request/response message to communicate with BMC
317	  controller, which can be found on the server.
318
319	  To compile this driver as a module, choose M here:
320	  the module will be called as acpi_ipmi.
321
322config ACPI_HOTPLUG_CPU
323	bool
324	depends on ACPI_PROCESSOR && HOTPLUG_CPU
325	select ACPI_CONTAINER
 
326
327config ACPI_PROCESSOR_AGGREGATOR
328	tristate "Processor Aggregator"
329	depends on ACPI_PROCESSOR
 
330	depends on X86
331	help
332	  ACPI 4.0 defines processor Aggregator, which enables OS to perform
333	  specific processor configuration and control that applies to all
334	  processors in the platform. Currently only logical processor idling
335	  is defined, which is to reduce power consumption. This driver
336	  supports the new device.
337
338config ACPI_THERMAL
339	tristate "Thermal Zone"
340	depends on ACPI_PROCESSOR
341	select THERMAL
342	select ACPI_THERMAL_LIB
343	default y
344	help
345	  This driver supports ACPI thermal zones.  Most mobile and
346	  some desktop systems support ACPI thermal zones.  It is HIGHLY
347	  recommended that this option be enabled, as your processor(s)
348	  may be damaged without it.
349
350	  To compile this driver as a module, choose M here:
351	  the module will be called thermal.
352
353config ACPI_PLATFORM_PROFILE
354	tristate
 
 
 
355
356config ACPI_CUSTOM_DSDT_FILE
357	string "Custom DSDT Table file to include"
358	default ""
359	depends on !STANDALONE
360	help
361	  This option supports a custom DSDT by linking it into the kernel.
 
362
363	  Enter the full path name to the file which includes the AmlCode
364	  or dsdt_aml_code declaration.
365
366	  If unsure, don't enter a file name.
367
368config ACPI_CUSTOM_DSDT
369	bool
370	default ACPI_CUSTOM_DSDT_FILE != ""
371
372config ARCH_HAS_ACPI_TABLE_UPGRADE
373	def_bool n
 
 
 
 
 
374
375config ACPI_TABLE_UPGRADE
376	bool "Allow upgrading ACPI tables via initrd"
377	depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE
378	default y
379	help
380	  This option provides functionality to upgrade arbitrary ACPI tables
381	  via initrd. No functional change if no ACPI tables are passed via
382	  initrd, therefore it's safe to say Y.
383	  See Documentation/admin-guide/acpi/initrd_table_override.rst for details
384
385config ACPI_TABLE_OVERRIDE_VIA_BUILTIN_INITRD
386	bool "Override ACPI tables from built-in initrd"
387	depends on ACPI_TABLE_UPGRADE
388	depends on INITRAMFS_SOURCE!="" && INITRAMFS_COMPRESSION_NONE
389	help
390	  This option provides functionality to override arbitrary ACPI tables
391	  from built-in uncompressed initrd.
392
393	  See Documentation/admin-guide/acpi/initrd_table_override.rst for details
394
395config ACPI_DEBUG
396	bool "Debug Statements"
 
397	help
398	  The ACPI subsystem can produce debug output.  Saying Y enables this
399	  output and increases the kernel size by around 50K.
400
401	  Use the acpi.debug_layer and acpi.debug_level kernel command-line
402	  parameters documented in Documentation/firmware-guide/acpi/debug.rst and
403	  Documentation/admin-guide/kernel-parameters.rst to control the type and
404	  amount of debug output.
405
 
 
 
 
 
 
 
 
406config ACPI_PCI_SLOT
407	bool "PCI slot detection driver"
408	depends on SYSFS && PCI
 
409	help
410	  This driver creates entries in /sys/bus/pci/slots/ for all PCI
411	  slots in the system.  This can help correlate PCI bus addresses,
412	  i.e., segment/bus/device/function tuples, with physical slots in
413	  the system.  If you are unsure, say N.
414
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
415config ACPI_CONTAINER
416	bool "Container and Module Devices"
417	default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
 
418	help
419	  This driver supports ACPI Container and Module devices (IDs
420	  ACPI0004, PNP0A05, and PNP0A06).
421
422	  This helps support hotplug of nodes, CPUs, and memory.
423
 
 
 
424config ACPI_HOTPLUG_MEMORY
425	bool "Memory Hotplug"
426	depends on MEMORY_HOTPLUG
 
427	help
428	  This driver supports ACPI memory hotplug.  The driver
429	  fields notifications on ACPI memory devices (PNP0C80),
430	  which represent memory ranges that may be onlined or
431	  offlined during runtime.
432
433	  If your hardware and firmware do not support adding or
434	  removing memory devices at runtime, you need not enable
435	  this driver.
436
437config ACPI_HOTPLUG_IOAPIC
438	bool
439	depends on PCI
440	depends on X86_IO_APIC
441	default y
442
443config ACPI_SBS
444	tristate "Smart Battery System"
445	depends on X86 && ACPI_EC
446	select POWER_SUPPLY
447	help
448	  This driver supports the Smart Battery System, another
449	  type of access to battery information, found on some laptops.
450
451	  To compile this driver as a module, choose M here:
452	  the modules will be called sbs and sbshc.
453
454config ACPI_HED
455	tristate "Hardware Error Device"
456	help
457	  This driver supports the Hardware Error Device (PNP0C33),
458	  which is used to report some hardware errors notified via
459	  SCI, mainly the corrected errors.
460
461config ACPI_BGRT
462	bool "Boottime Graphics Resource Table support"
463	depends on EFI && (X86 || ARM64 || LOONGARCH)
464	help
465	  This driver adds support for exposing the ACPI Boottime Graphics
466	  Resource Table, which allows the operating system to obtain
467	  data from the firmware boot splash. It will appear under
468	  /sys/firmware/acpi/bgrt/ .
469
470config ACPI_REDUCED_HARDWARE_ONLY
471	bool "Hardware-reduced ACPI support only" if EXPERT
472	help
473	  This config item changes the way the ACPI code is built.  When this
474	  option is selected, the kernel will use a specialized version of
475	  ACPICA that ONLY supports the ACPI "reduced hardware" mode.  The
476	  resulting kernel will be smaller but it will also be restricted to
477	  running in ACPI reduced hardware mode ONLY.
478
479	  If you are unsure what to do, do not enable this option.
480
481config ACPI_NHLT
482	bool
483
484source "drivers/acpi/nfit/Kconfig"
485source "drivers/acpi/numa/Kconfig"
486source "drivers/acpi/apei/Kconfig"
487source "drivers/acpi/dptf/Kconfig"
488
489config ACPI_WATCHDOG
490	bool
491
492config ACPI_EXTLOG
493	tristate "Extended Error Log support"
494	depends on X86_MCE && X86_LOCAL_APIC && EDAC
495	select UEFI_CPER
496	help
497	  Certain usages such as Predictive Failure Analysis (PFA) require
498	  more information about the error than what can be described in
499	  processor machine check banks. Most server processors log
500	  additional information about the error in processor uncore
501	  registers. Since the addresses and layout of these registers vary
502	  widely from one processor to another, system software cannot
503	  readily make use of them. To complicate matters further, some of
504	  the additional error information cannot be constructed without
505	  detailed knowledge about platform topology.
506
507	  Enhanced MCA Logging allows firmware to provide additional error
508	  information to system software, synchronous with MCE or CMCI. This
509	  driver adds support for that functionality with corresponding
510	  tracepoint which carries that information to userspace.
511
512config ACPI_ADXL
513	bool
514
515config ACPI_CONFIGFS
516	tristate "ACPI configfs support"
517	select CONFIGFS_FS
518	help
519	  Select this option to enable support for ACPI configuration from
520	  userspace. The configurable ACPI groups will be visible under
521	  /config/acpi, assuming configfs is mounted under /config.
522
523config ACPI_PFRUT
524	tristate "ACPI Platform Firmware Runtime Update and Telemetry"
525	depends on 64BIT
526	help
527	  This mechanism allows certain pieces of the platform firmware
528	  to be updated on the fly while the system is running (runtime)
529	  without the need to restart it, which is key in the cases when
530	  the system needs to be available 100% of the time and it cannot
531	  afford the downtime related to restarting it, or when the work
532	  carried out by the system is particularly important, so it cannot
533	  be interrupted, and it is not practical to wait until it is complete.
534
535	  The existing firmware code can be modified (driver update) or
536	  extended by adding new code to the firmware (code injection).
537
538	  Besides, the telemetry driver allows user space to fetch telemetry
539	  data from the firmware with the help of the Platform Firmware Runtime
540	  Telemetry interface.
541
542	  To compile the drivers as modules, choose M here:
543	  the modules will be called pfr_update and pfr_telemetry.
544
545if ARM64
546source "drivers/acpi/arm64/Kconfig"
547endif
548
549config ACPI_PPTT
550	bool
551
552config ACPI_PCC
553	bool "ACPI PCC Address Space"
554	depends on PCC
555	default y
556	help
557	  The PCC Address Space also referred as PCC Operation Region pertains
558	  to the region of PCC subspace that succeeds the PCC signature.
559
560	  The PCC Operation Region works in conjunction with the PCC Table
561	  (Platform Communications Channel Table). PCC subspaces that are
562	  marked for use as PCC Operation Regions must not be used as PCC
563	  subspaces for the standard ACPI features such as CPPC, RASF, PDTT and
564	  MPST. These standard features must always use the PCC Table instead.
565
566	  Enable this feature if you want to set up and install the PCC Address
567	  Space handler to handle PCC OpRegion in the firmware.
568
569config ACPI_FFH
570	bool "ACPI FFH Address Space"
571	default n
572	help
573	  The FFH(Fixed Function Hardware) Address Space also referred as FFH
574	  Operation Region allows to define platform specific opregion.
575
576	  Enable this feature if you want to set up and install the FFH Address
577	  Space handler to handle FFH OpRegion in the firmware.
578
579source "drivers/acpi/pmic/Kconfig"
580
581config ACPI_VIOT
582	bool
583
584config ACPI_PRMT
585	bool "Platform Runtime Mechanism Support"
586	depends on EFI_RUNTIME_WRAPPERS && (X86_64 || ARM64)
587	default y
588	help
589	  Platform Runtime Mechanism (PRM) is a firmware interface exposing a
590	  set of binary executables that can be called from the AML interpreter
591	  or directly from device drivers.
592
593	  Say Y to enable the AML interpreter to execute the PRM code.
594
595	  While this feature is optional in principle, leaving it out may
596	  substantially increase computational overhead related to the
597	  initialization of some server systems.
598
599endif	# ACPI
600
601config X86_PM_TIMER
602	bool "Power Management Timer Support" if EXPERT
603	depends on X86 && (ACPI || JAILHOUSE_GUEST)
604	default y
605	help
606	  The Power Management Timer is available on all ACPI-capable,
607	  in most cases even if ACPI is unusable or blacklisted.
608
609	  This timing source is not affected by power management features
610	  like aggressive processor idling, throttling, frequency and/or
611	  voltage scaling, unlike the commonly used Time Stamp Counter
612	  (TSC) timing source.
613
614	  You should nearly always say Y here because many modern
615	  systems require this timer.

 
  1#
  2# ACPI Configuration
  3#
  4
 
 
 
  5menuconfig ACPI
  6	bool "ACPI (Advanced Configuration and Power Interface) Support"
  7	depends on !IA64_HP_SIM
  8	depends on IA64 || X86
  9	depends on PCI
 10	select PNP
 11	default y
 
 
 
 12	help
 13	  Advanced Configuration and Power Interface (ACPI) support for 
 14	  Linux requires an ACPI-compliant platform (hardware/firmware),
 15	  and assumes the presence of OS-directed configuration and power
 16	  management (OSPM) software.  This option will enlarge your 
 17	  kernel by about 70K.
 18
 19	  Linux ACPI provides a robust functional replacement for several 
 20	  legacy configuration and power management interfaces, including
 21	  the Plug-and-Play BIOS specification (PnP BIOS), the 
 22	  MultiProcessor Specification (MPS), and the Advanced Power 
 23	  Management (APM) specification.  If both ACPI and APM support 
 24	  are configured, ACPI is used.
 25
 26	  The project home page for the Linux ACPI subsystem is here:
 27	  <http://www.lesswatts.org/projects/acpi/>
 28
 29	  Linux support for ACPI is based on Intel Corporation's ACPI
 30	  Component Architecture (ACPI CA).  For more information on the
 31	  ACPI CA, see:
 32	  <http://acpica.org/>
 33
 34	  ACPI is an open industry specification co-developed by
 35	  Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
 
 
 
 36	  The specification is available at:
 37	  <http://www.acpi.info>
 38
 39if ACPI
 40
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 41config ACPI_SLEEP
 42	bool
 43	depends on SUSPEND || HIBERNATION
 
 44	default y
 45
 46config ACPI_PROCFS
 47	bool "Deprecated /proc/acpi files"
 48	depends on PROC_FS
 49	help
 50	  For backwards compatibility, this option allows
 51	  deprecated /proc/acpi/ files to exist, even when
 52	  they have been replaced by functions in /sys.
 53
 54	  This option has no effect on /proc/acpi/ files
 55	  and functions which do not yet exist in /sys.
 56
 57	  Say N to delete /proc/acpi/ files that have moved to /sys/
 58
 59config ACPI_PROCFS_POWER
 60	bool "Deprecated power /proc/acpi directories"
 61	depends on PROC_FS
 62	help
 63	  For backwards compatibility, this option allows
 64          deprecated power /proc/acpi/ directories to exist, even when
 65          they have been replaced by functions in /sys.
 66          The deprecated directories (and their replacements) include:
 67	  /proc/acpi/battery/* (/sys/class/power_supply/*)
 68	  /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
 69	  This option has no effect on /proc/acpi/ directories
 70	  and functions, which do not yet exist in /sys
 71	  This option, together with the proc directories, will be
 72	  deleted in 2.6.39.
 73
 74	  Say N to delete power /proc/acpi/ directories that have moved to /sys/
 75
 76config ACPI_EC_DEBUGFS
 77	tristate "EC read/write access through /sys/kernel/debug/ec"
 78	default n
 79	help
 80	  Say N to disable Embedded Controller /sys/kernel/debug interface
 81
 82	  Be aware that using this interface can confuse your Embedded
 83	  Controller in a way that a normal reboot is not enough. You then
 84	  have to power off your system, and remove the laptop battery for
 85	  some seconds.
 86	  An Embedded Controller typically is available on laptops and reads
 87	  sensor values like battery state and temperature.
 88	  The kernel accesses the EC through ACPI parsed code provided by BIOS
 89	  tables. This option allows to access the EC directly without ACPI
 90	  code being involved.
 91	  Thus this option is a debug option that helps to write ACPI drivers
 92	  and can be used to identify ACPI code or EC firmware bugs.
 93
 94config ACPI_PROC_EVENT
 95	bool "Deprecated /proc/acpi/event support"
 96	depends on PROC_FS
 97	default y
 98	help
 99	  A user-space daemon, acpid, typically reads /proc/acpi/event
100	  and handles all ACPI-generated events.
101
102	  These events are now delivered to user-space either
103	  via the input layer or as netlink events.
104
105	  This build option enables the old code for legacy
106	  user-space implementation.  After some time, this will
107	  be moved under CONFIG_ACPI_PROCFS, and then deleted.
108
109	  Say Y here to retain the old behaviour.  Say N if your
110	  user-space is newer than kernel 2.6.23 (September 2007).
111
112config ACPI_AC
113	tristate "AC Adapter"
114	depends on X86
115	select POWER_SUPPLY
116	default y
117	help
118	  This driver supports the AC Adapter object, which indicates
119	  whether a system is on AC or not.  If you have a system that can
120	  switch between A/C and battery, say Y.
121
122	  To compile this driver as a module, choose M here:
123	  the module will be called ac.
124
125config ACPI_BATTERY
126	tristate "Battery"
127	depends on X86
128	select POWER_SUPPLY
129	default y
130	help
131	  This driver adds support for battery information through
132	  /proc/acpi/battery. If you have a mobile system with a battery, 
133	  say Y.
134
135	  To compile this driver as a module, choose M here:
136	  the module will be called battery.
137
138config ACPI_BUTTON
139	tristate "Button"
140	depends on INPUT
141	default y
142	help
143	  This driver handles events on the power, sleep, and lid buttons.
144	  A daemon reads /proc/acpi/event and perform user-defined actions
145	  such as shutting down the system.  This is necessary for
146	  software-controlled poweroff.
147
148	  To compile this driver as a module, choose M here:
149	  the module will be called button.
150
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
151config ACPI_VIDEO
152	tristate "Video"
153	depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
154	depends on INPUT
 
155	select THERMAL
156	help
157	  This driver implements the ACPI Extensions For Display Adapters
158	  for integrated graphics devices on motherboard, as specified in
159	  ACPI 2.0 Specification, Appendix B.  This supports basic operations
160	  such as defining the video POST device, retrieving EDID information,
161	  and setting up a video output.
162
163	  To compile this driver as a module, choose M here:
164	  the module will be called video.
165
166config ACPI_FAN
167	tristate "Fan"
168	select THERMAL
169	default y
170	help
171	  This driver supports ACPI fan devices, allowing user-mode
172	  applications to perform basic fan control (on, off, status).
173
174	  To compile this driver as a module, choose M here:
175	  the module will be called fan.
176
 
 
 
 
 
 
 
 
 
 
 
 
 
177config ACPI_DOCK
178	bool "Dock"
179	depends on EXPERIMENTAL
180	help
181	  This driver supports ACPI-controlled docking stations and removable
182	  drive bays such as the IBM Ultrabay and the Dell Module Bay.
183
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
184config ACPI_PROCESSOR
185	tristate "Processor"
 
 
 
186	select THERMAL
187	select CPU_IDLE
188	default y
189	help
190	  This driver installs ACPI as the idle handler for Linux and uses
191	  ACPI C2 and C3 processor states to save power on systems that
192	  support it.  It is required by several flavors of cpufreq
193	  performance-state drivers.
194
195	  To compile this driver as a module, choose M here:
196	  the module will be called processor.
 
197config ACPI_IPMI
198	tristate "IPMI"
199	depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER
200	default n
201	help
202	  This driver enables the ACPI to access the BMC controller. And it
203	  uses the IPMI request/response message to communicate with BMC
204	  controller, which can be found on on the server.
205
206	  To compile this driver as a module, choose M here:
207	  the module will be called as acpi_ipmi.
208
209config ACPI_HOTPLUG_CPU
210	bool
211	depends on ACPI_PROCESSOR && HOTPLUG_CPU
212	select ACPI_CONTAINER
213	default y
214
215config ACPI_PROCESSOR_AGGREGATOR
216	tristate "Processor Aggregator"
217	depends on ACPI_PROCESSOR
218	depends on EXPERIMENTAL
219	depends on X86
220	help
221	  ACPI 4.0 defines processor Aggregator, which enables OS to perform
222	  specific processor configuration and control that applies to all
223	  processors in the platform. Currently only logical processor idling
224	  is defined, which is to reduce power consumption. This driver
225	  supports the new device.
226
227config ACPI_THERMAL
228	tristate "Thermal Zone"
229	depends on ACPI_PROCESSOR
230	select THERMAL
 
231	default y
232	help
233	  This driver supports ACPI thermal zones.  Most mobile and
234	  some desktop systems support ACPI thermal zones.  It is HIGHLY
235	  recommended that this option be enabled, as your processor(s)
236	  may be damaged without it.
237
238	  To compile this driver as a module, choose M here:
239	  the module will be called thermal.
240
241config ACPI_NUMA
242	bool "NUMA support"
243	depends on NUMA
244	depends on (X86 || IA64)
245	default y if IA64_GENERIC || IA64_SGI_SN2
246
247config ACPI_CUSTOM_DSDT_FILE
248	string "Custom DSDT Table file to include"
249	default ""
250	depends on !STANDALONE
251	help
252	  This option supports a custom DSDT by linking it into the kernel.
253	  See Documentation/acpi/dsdt-override.txt
254
255	  Enter the full path name to the file which includes the AmlCode
256	  declaration.
257
258	  If unsure, don't enter a file name.
259
260config ACPI_CUSTOM_DSDT
261	bool
262	default ACPI_CUSTOM_DSDT_FILE != ""
263
264config ACPI_BLACKLIST_YEAR
265	int "Disable ACPI for systems before Jan 1st this year" if X86_32
266	default 0
267	help
268	  Enter a 4-digit year, e.g., 2001, to disable ACPI by default
269	  on platforms with DMI BIOS date before January 1st that year.
270	  "acpi=force" can be used to override this mechanism.
271
272	  Enter 0 to disable this mechanism and allow ACPI to
273	  run by default no matter what the year.  (default)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
274
275config ACPI_DEBUG
276	bool "Debug Statements"
277	default n
278	help
279	  The ACPI subsystem can produce debug output.  Saying Y enables this
280	  output and increases the kernel size by around 50K.
281
282	  Use the acpi.debug_layer and acpi.debug_level kernel command-line
283	  parameters documented in Documentation/acpi/debug.txt and
284	  Documentation/kernel-parameters.txt to control the type and
285	  amount of debug output.
286
287config ACPI_DEBUG_FUNC_TRACE
288	bool "Additionally enable ACPI function tracing"
289	default n
290	depends on ACPI_DEBUG
291	help
292	  ACPI Debug Statements slow down ACPI processing. Function trace
293	  is about half of the penalty and is rarely useful.
294
295config ACPI_PCI_SLOT
296	tristate "PCI slot detection driver"
297	depends on SYSFS
298	default n
299	help
300	  This driver creates entries in /sys/bus/pci/slots/ for all PCI
301	  slots in the system.  This can help correlate PCI bus addresses,
302	  i.e., segment/bus/device/function tuples, with physical slots in
303	  the system.  If you are unsure, say N.
304
305	  To compile this driver as a module, choose M here:
306	  the module will be called pci_slot.
307
308config X86_PM_TIMER
309	bool "Power Management Timer Support" if EXPERT
310	depends on X86
311	default y
312	help
313	  The Power Management Timer is available on all ACPI-capable,
314	  in most cases even if ACPI is unusable or blacklisted.
315
316	  This timing source is not affected by power management features
317	  like aggressive processor idling, throttling, frequency and/or
318	  voltage scaling, unlike the commonly used Time Stamp Counter
319	  (TSC) timing source.
320
321	  You should nearly always say Y here because many modern
322	  systems require this timer. 
323
324config ACPI_CONTAINER
325	tristate "Container and Module Devices (EXPERIMENTAL)"
326	depends on EXPERIMENTAL
327	default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
328	help
329	  This driver supports ACPI Container and Module devices (IDs
330	  ACPI0004, PNP0A05, and PNP0A06).
331
332	  This helps support hotplug of nodes, CPUs, and memory.
333
334	  To compile this driver as a module, choose M here:
335	  the module will be called container.
336
337config ACPI_HOTPLUG_MEMORY
338	tristate "Memory Hotplug"
339	depends on MEMORY_HOTPLUG
340	default n
341	help
342	  This driver supports ACPI memory hotplug.  The driver
343	  fields notifications on ACPI memory devices (PNP0C80),
344	  which represent memory ranges that may be onlined or
345	  offlined during runtime.
346
347	  If your hardware and firmware do not support adding or
348	  removing memory devices at runtime, you need not enable
349	  this driver.
350
351	  To compile this driver as a module, choose M here:
352	  the module will be called acpi_memhotplug.
 
 
 
353
354config ACPI_SBS
355	tristate "Smart Battery System"
356	depends on X86
357	select POWER_SUPPLY
358	help
359	  This driver supports the Smart Battery System, another
360	  type of access to battery information, found on some laptops.
361
362	  To compile this driver as a module, choose M here:
363	  the modules will be called sbs and sbshc.
364
365config ACPI_HED
366	tristate "Hardware Error Device"
367	help
368	  This driver supports the Hardware Error Device (PNP0C33),
369	  which is used to report some hardware errors notified via
370	  SCI, mainly the corrected errors.
371
372config ACPI_CUSTOM_METHOD
373	tristate "Allow ACPI methods to be inserted/replaced at run time"
374	depends on DEBUG_FS
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
375	default n
376	help
377	  This debug facility allows ACPI AML methods to me inserted and/or
378	  replaced without rebooting the system. For details refer to:
379	  Documentation/acpi/method-customizing.txt.
380
381	  NOTE: This option is security sensitive, because it allows arbitrary
382	  kernel memory to be written to by root (uid=0) users, allowing them
383	  to bypass certain security measures (e.g. if root is not allowed to
384	  load additional kernel modules after boot, this feature may be used
385	  to override that restriction).
 
 
 
 
 
 
 
 
 
 
 
 
386
387source "drivers/acpi/apei/Kconfig"
 
 
388
389endif	# ACPI