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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# ACPI Configuration
3#
4
Jan Engelhardt3f2c48c2007-07-03 01:40:59 -04005menuconfig ACPI
Frans Pop355ee5e2007-10-29 17:20:38 -04006 bool "ACPI (Advanced Configuration and Power Interface) Support"
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 depends on !IA64_HP_SIM
8 depends on IA64 || X86
Adrian Bunk13001242006-03-28 17:04:00 -05009 depends on PCI
Len Brown243b66e2007-02-15 22:34:36 -050010 select PNP
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 default y
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070012 help
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 Advanced Configuration and Power Interface (ACPI) support for
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070014 Linux requires an ACPI-compliant platform (hardware/firmware),
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 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
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070024 are configured, ACPI is used.
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070026 The project home page for the Linux ACPI subsystem is here:
Rafael J. Wysockiaaf3d292013-10-10 23:25:58 +020027 <https://01.org/linux-acpi>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29 Linux support for ACPI is based on Intel Corporation's ACPI
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070030 Component Architecture (ACPI CA). For more information on the
31 ACPI CA, see:
32 <http://acpica.org/>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070034 ACPI is an open industry specification co-developed by
35 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
36 The specification is available at:
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 <http://www.acpi.info>
38
Len Brown3e11c3c2005-05-27 04:53:27 -040039if ACPI
40
Len Brown673d5b42007-07-28 03:33:16 -040041config ACPI_SLEEP
42 bool
Rafael J. Wysocki5d1e0722008-10-22 14:58:43 -040043 depends on SUSPEND || HIBERNATION
Len Brown673d5b42007-07-28 03:33:16 -040044 default y
45
Zhang Ruib981c592007-01-29 11:02:30 +080046config ACPI_PROCFS
Len Brownfb804712007-07-24 01:50:46 -040047 bool "Deprecated /proc/acpi files"
48 depends on PROC_FS
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070049 help
Len Brownfb804712007-07-24 01:50:46 -040050 For backwards compatibility, this option allows
Rolf Eike Beer405bbe92007-10-20 03:10:57 +020051 deprecated /proc/acpi/ files to exist, even when
Len Brownfb804712007-07-24 01:50:46 -040052 they have been replaced by functions in /sys.
Len Brownfb804712007-07-24 01:50:46 -040053
Len Brownfb804712007-07-24 01:50:46 -040054 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/
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070058
Thomas Renninger1195a092010-07-16 13:11:31 +020059config ACPI_EC_DEBUGFS
60 tristate "EC read/write access through /sys/kernel/debug/ec"
Thomas Renninger500de3dd2010-07-29 22:30:24 +020061 default n
Thomas Renninger1195a092010-07-16 13:11:31 +020062 help
63 Say N to disable Embedded Controller /sys/kernel/debug interface
64
Thomas Renninger500de3dd2010-07-29 22:30:24 +020065 Be aware that using this interface can confuse your Embedded
66 Controller in a way that a normal reboot is not enough. You then
Andrea Gelmini25cb1bf2010-08-18 15:22:10 +020067 have to power off your system, and remove the laptop battery for
Thomas Renninger500de3dd2010-07-29 22:30:24 +020068 some seconds.
Thomas Renninger1195a092010-07-16 13:11:31 +020069 An Embedded Controller typically is available on laptops and reads
70 sensor values like battery state and temperature.
Thomas Renninger500de3dd2010-07-29 22:30:24 +020071 The kernel accesses the EC through ACPI parsed code provided by BIOS
72 tables. This option allows to access the EC directly without ACPI
73 code being involved.
Thomas Renninger1195a092010-07-16 13:11:31 +020074 Thus this option is a debug option that helps to write ACPI drivers
75 and can be used to identify ACPI code or EC firmware bugs.
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077config ACPI_AC
78 tristate "AC Adapter"
Alexey Starikovskiy5527c8b2007-10-29 17:08:59 -040079 depends on X86
Zhang Rui1b3d4c32010-10-08 13:54:57 +080080 select POWER_SUPPLY
Len Brown07fefe42005-08-25 12:22:04 -040081 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070083 This driver supports the AC Adapter object, which indicates
84 whether a system is on AC or not. If you have a system that can
Len Brown07fefe42005-08-25 12:22:04 -040085 switch between A/C and battery, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070087 To compile this driver as a module, choose M here:
88 the module will be called ac.
89
Linus Torvalds1da177e2005-04-16 15:20:36 -070090config ACPI_BATTERY
91 tristate "Battery"
Alexey Starikovskiy5527c8b2007-10-29 17:08:59 -040092 depends on X86
Zhang Rui1b3d4c32010-10-08 13:54:57 +080093 select POWER_SUPPLY
Len Brown07fefe42005-08-25 12:22:04 -040094 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 help
96 This driver adds support for battery information through
97 /proc/acpi/battery. If you have a mobile system with a battery,
98 say Y.
99
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700100 To compile this driver as a module, choose M here:
101 the module will be called battery.
102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103config ACPI_BUTTON
104 tristate "Button"
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500105 depends on INPUT
Len Brown07fefe42005-08-25 12:22:04 -0400106 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700108 This driver handles events on the power, sleep, and lid buttons.
Krzysztof Mazur7d13f942013-10-13 00:11:00 +0200109 A daemon reads events from input devices or via netlink and
110 performs user-defined actions such as shutting down the system.
111 This is necessary for software-controlled poweroff.
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700112
113 To compile this driver as a module, choose M here:
114 the module will be called button.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
116config ACPI_VIDEO
117 tristate "Video"
Luming Yu23b0f012007-05-09 21:07:05 +0800118 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
Andreas Herrmann03e2bf22007-09-17 23:41:05 +0200119 depends on INPUT
Zhang Rui63c4ec92008-04-21 16:07:13 +0800120 select THERMAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700122 This driver implements the ACPI Extensions For Display Adapters
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 for integrated graphics devices on motherboard, as specified in
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700124 ACPI 2.0 Specification, Appendix B. This supports basic operations
125 such as defining the video POST device, retrieving EDID information,
126 and setting up a video output.
127
128 To compile this driver as a module, choose M here:
129 the module will be called video.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131config ACPI_FAN
132 tristate "Fan"
Zhang Rui63c4ec92008-04-21 16:07:13 +0800133 select THERMAL
Len Brown07fefe42005-08-25 12:22:04 -0400134 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700136 This driver supports ACPI fan devices, allowing user-mode
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 applications to perform basic fan control (on, off, status).
138
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700139 To compile this driver as a module, choose M here:
140 the module will be called fan.
141
Len Brownc8f7a622006-07-09 17:22:28 -0400142config ACPI_DOCK
Shaohua Li898b0542008-09-27 11:10:28 +0800143 bool "Dock"
Len Brownc8f7a622006-07-09 17:22:28 -0400144 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700145 This driver supports ACPI-controlled docking stations and removable
146 drive bays such as the IBM Ultrabay and the Dell Module Bay.
Kristen Carlson Accardi01b57e72006-10-20 14:30:25 -0700147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148config ACPI_PROCESSOR
149 tristate "Processor"
Zhang Rui63c4ec92008-04-21 16:07:13 +0800150 select THERMAL
Jean Delvarea4084c12010-10-10 14:54:52 +0200151 select CPU_IDLE
Len Brown07fefe42005-08-25 12:22:04 -0400152 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700154 This driver installs ACPI as the idle handler for Linux and uses
155 ACPI C2 and C3 processor states to save power on systems that
Len Brown07fefe42005-08-25 12:22:04 -0400156 support it. It is required by several flavors of cpufreq
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700157 performance-state drivers.
158
159 To compile this driver as a module, choose M here:
160 the module will be called processor.
Lv Zheng4b88e332013-09-13 13:14:51 +0800161
Zhao Yakuie92b2972010-12-08 10:10:18 +0800162config ACPI_IPMI
163 tristate "IPMI"
Lv Zheng4b88e332013-09-13 13:14:51 +0800164 depends on IPMI_SI
Zhao Yakuie92b2972010-12-08 10:10:18 +0800165 default n
166 help
167 This driver enables the ACPI to access the BMC controller. And it
168 uses the IPMI request/response message to communicate with BMC
169 controller, which can be found on on the server.
170
171 To compile this driver as a module, choose M here:
172 the module will be called as acpi_ipmi.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
174config ACPI_HOTPLUG_CPU
Adrian Bunkcbfc1ba2005-07-30 04:18:00 -0400175 bool
Kees Cookf756f282013-01-16 18:53:28 -0800176 depends on ACPI_PROCESSOR && HOTPLUG_CPU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 select ACPI_CONTAINER
Adrian Bunkcbfc1ba2005-07-30 04:18:00 -0400178 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
Shaohua Li8e0af512009-07-27 18:11:02 -0400180config ACPI_PROCESSOR_AGGREGATOR
181 tristate "Processor Aggregator"
182 depends on ACPI_PROCESSOR
Len Brownd91f79e2009-09-27 02:35:55 -0400183 depends on X86
Shaohua Li8e0af512009-07-27 18:11:02 -0400184 help
185 ACPI 4.0 defines processor Aggregator, which enables OS to perform
Jiri Slabyc4c4e2a2009-10-09 15:53:24 +0200186 specific processor configuration and control that applies to all
Shaohua Li8e0af512009-07-27 18:11:02 -0400187 processors in the platform. Currently only logical processor idling
188 is defined, which is to reduce power consumption. This driver
Jiri Slabyc4c4e2a2009-10-09 15:53:24 +0200189 supports the new device.
Shaohua Li8e0af512009-07-27 18:11:02 -0400190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191config ACPI_THERMAL
192 tristate "Thermal Zone"
193 depends on ACPI_PROCESSOR
Zhang Rui3f655ef2008-01-17 15:51:11 +0800194 select THERMAL
Len Brown07fefe42005-08-25 12:22:04 -0400195 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700197 This driver supports ACPI thermal zones. Most mobile and
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 some desktop systems support ACPI thermal zones. It is HIGHLY
199 recommended that this option be enabled, as your processor(s)
200 may be damaged without it.
201
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700202 To compile this driver as a module, choose M here:
203 the module will be called thermal.
204
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205config ACPI_NUMA
206 bool "NUMA support"
207 depends on NUMA
Yasunori Goto762834e2006-06-23 02:03:19 -0700208 depends on (X86 || IA64)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 default y if IA64_GENERIC || IA64_SGI_SN2
210
Randy Dunlap7ce95732008-02-22 11:25:04 -0800211config ACPI_CUSTOM_DSDT_FILE
212 string "Custom DSDT Table file to include"
213 default ""
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 depends on !STANDALONE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 help
Len Brownd89e9d62008-02-06 19:28:02 -0500216 This option supports a custom DSDT by linking it into the kernel.
217 See Documentation/acpi/dsdt-override.txt
218
Uwe Zeisbergerc30fe7f2006-03-24 18:23:14 +0100219 Enter the full path name to the file which includes the AmlCode
220 declaration.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
Randy Dunlap7ce95732008-02-22 11:25:04 -0800222 If unsure, don't enter a file name.
223
224config ACPI_CUSTOM_DSDT
225 bool
226 default ACPI_CUSTOM_DSDT_FILE != ""
227
Thomas Renninger53aac442012-10-01 00:23:54 +0200228config ACPI_INITRD_TABLE_OVERRIDE
Thomas Renninger565d9562013-02-22 14:12:22 +0100229 bool "ACPI tables override via initrd"
230 depends on BLK_DEV_INITRD && X86
Thomas Renninger53aac442012-10-01 00:23:54 +0200231 default n
232 help
233 This option provides functionality to override arbitrary ACPI tables
234 via initrd. No functional change if no ACPI tables are passed via
235 initrd, therefore it's safe to say Y.
236 See Documentation/acpi/initrd_table_override.txt for details
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238config ACPI_DEBUG
239 bool "Debug Statements"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 default n
241 help
Bjorn Helgaasa0d84a92008-11-07 16:58:05 -0700242 The ACPI subsystem can produce debug output. Saying Y enables this
243 output and increases the kernel size by around 50K.
244
245 Use the acpi.debug_layer and acpi.debug_level kernel command-line
246 parameters documented in Documentation/acpi/debug.txt and
247 Documentation/kernel-parameters.txt to control the type and
248 amount of debug output.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
Alex Chiang8344b562008-06-10 15:30:42 -0600250config ACPI_PCI_SLOT
Jiang Liuab1a2e02013-01-19 00:07:42 +0800251 bool "PCI slot detection driver"
Alex Chiang268a03a2009-06-17 19:03:57 -0600252 depends on SYSFS
Alex Chiang8344b562008-06-10 15:30:42 -0600253 default n
254 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700255 This driver creates entries in /sys/bus/pci/slots/ for all PCI
256 slots in the system. This can help correlate PCI bus addresses,
257 i.e., segment/bus/device/function tuples, with physical slots in
258 the system. If you are unsure, say N.
259
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260config X86_PM_TIMER
David Rientjes6a108a12011-01-20 14:44:16 -0800261 bool "Power Management Timer Support" if EXPERT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 depends on X86
Len Brown07fefe42005-08-25 12:22:04 -0400263 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 help
265 The Power Management Timer is available on all ACPI-capable,
266 in most cases even if ACPI is unusable or blacklisted.
267
Matt LaPlantec73a6682006-10-03 22:24:43 +0200268 This timing source is not affected by power management features
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 like aggressive processor idling, throttling, frequency and/or
270 voltage scaling, unlike the commonly used Time Stamp Counter
271 (TSC) timing source.
272
Andi Kleene78256b2006-02-26 04:18:37 +0100273 You should nearly always say Y here because many modern
274 systems require this timer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
276config ACPI_CONTAINER
Linus Torvalds06991c22013-02-21 12:05:51 -0800277 bool "Container and Module Devices"
Paul Bolleea6a4582013-03-11 10:53:48 +0000278 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700279 help
280 This driver supports ACPI Container and Module devices (IDs
281 ACPI0004, PNP0A05, and PNP0A06).
Keiichiro Tokunaga45b1b192005-03-02 00:00:00 -0500282
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700283 This helps support hotplug of nodes, CPUs, and memory.
284
285 To compile this driver as a module, choose M here:
286 the module will be called container.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
288config ACPI_HOTPLUG_MEMORY
Rafael J. Wysocki0a347642013-03-03 23:18:03 +0100289 bool "Memory Hotplug"
Yasunori Gotobc02af92006-06-27 02:53:30 -0700290 depends on MEMORY_HOTPLUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700292 This driver supports ACPI memory hotplug. The driver
293 fields notifications on ACPI memory devices (PNP0C80),
294 which represent memory ranges that may be onlined or
295 offlined during runtime.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700297 If your hardware and firmware do not support adding or
298 removing memory devices at runtime, you need not enable
299 this driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700301 To compile this driver as a module, choose M here:
302 the module will be called acpi_memhotplug.
Rich Townsend3f86b832006-07-01 11:36:54 -0400303
304config ACPI_SBS
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400305 tristate "Smart Battery System"
Vladimir Lebedevb4150fc2007-03-19 17:45:50 +0300306 depends on X86
Zhang Rui1b3d4c32010-10-08 13:54:57 +0800307 select POWER_SUPPLY
Rich Townsend3f86b832006-07-01 11:36:54 -0400308 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700309 This driver supports the Smart Battery System, another
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400310 type of access to battery information, found on some laptops.
Rich Townsend3f86b832006-07-01 11:36:54 -0400311
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700312 To compile this driver as a module, choose M here:
313 the modules will be called sbs and sbshc.
314
Huang Ying801eab82010-05-18 14:35:17 +0800315config ACPI_HED
316 tristate "Hardware Error Device"
317 help
318 This driver supports the Hardware Error Device (PNP0C33),
319 which is used to report some hardware errors notified via
320 SCI, mainly the corrected errors.
321
Thomas Renninger526b4af2011-05-26 12:26:24 +0200322config ACPI_CUSTOM_METHOD
323 tristate "Allow ACPI methods to be inserted/replaced at run time"
324 depends on DEBUG_FS
325 default n
326 help
Justin P. Mattockbd1b2a52012-01-03 08:49:48 -0800327 This debug facility allows ACPI AML methods to be inserted and/or
Thomas Renninger526b4af2011-05-26 12:26:24 +0200328 replaced without rebooting the system. For details refer to:
329 Documentation/acpi/method-customizing.txt.
330
331 NOTE: This option is security sensitive, because it allows arbitrary
332 kernel memory to be written to by root (uid=0) users, allowing them
333 to bypass certain security measures (e.g. if root is not allowed to
334 load additional kernel modules after boot, this feature may be used
335 to override that restriction).
336
Matthew Garrettd1ff4b12012-01-31 13:19:20 -0500337config ACPI_BGRT
Josh Triplett2223af32012-09-28 17:57:05 -0700338 bool "Boottime Graphics Resource Table support"
Tony Lucke66cd532013-04-03 13:17:20 +0200339 depends on EFI && X86
Matthew Garrettd1ff4b12012-01-31 13:19:20 -0500340 help
341 This driver adds support for exposing the ACPI Boottime Graphics
342 Resource Table, which allows the operating system to obtain
343 data from the firmware boot splash. It will appear under
344 /sys/firmware/acpi/bgrt/ .
345
Huang Yinga643ce22010-05-18 14:35:12 +0800346source "drivers/acpi/apei/Kconfig"
347
Chen, Gong4b3db702013-10-21 14:29:25 -0700348config ACPI_EXTLOG
349 tristate "Extended Error Log support"
Luck, Tony9ebddac2013-11-08 14:03:33 -0800350 depends on X86_MCE && X86_LOCAL_APIC
Luck, Tony7ea6c6c2013-10-28 14:06:55 -0700351 select UEFI_CPER
Chen, Gong4b3db702013-10-21 14:29:25 -0700352 default n
353 help
354 Certain usages such as Predictive Failure Analysis (PFA) require
355 more information about the error than what can be described in
356 processor machine check banks. Most server processors log
357 additional information about the error in processor uncore
358 registers. Since the addresses and layout of these registers vary
359 widely from one processor to another, system software cannot
360 readily make use of them. To complicate matters further, some of
361 the additional error information cannot be constructed without
362 detailed knowledge about platform topology.
363
364 Enhanced MCA Logging allows firmware to provide additional error
365 information to system software, synchronous with MCE or CMCI. This
366 driver adds support for that functionality.
367
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368endif # ACPI