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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
Andrew Morton6796a122006-12-19 12:56:13 -080010 depends on PM
Len Brown243b66e2007-02-15 22:34:36 -050011 select PNP
Len Brown9fdd54f2009-02-06 12:24:17 -050012 select CPU_IDLE
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 default y
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070014 help
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 Advanced Configuration and Power Interface (ACPI) support for
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070016 Linux requires an ACPI-compliant platform (hardware/firmware),
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 and assumes the presence of OS-directed configuration and power
18 management (OSPM) software. This option will enlarge your
19 kernel by about 70K.
20
21 Linux ACPI provides a robust functional replacement for several
22 legacy configuration and power management interfaces, including
23 the Plug-and-Play BIOS specification (PnP BIOS), the
24 MultiProcessor Specification (MPS), and the Advanced Power
25 Management (APM) specification. If both ACPI and APM support
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070026 are configured, ACPI is used.
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070028 The project home page for the Linux ACPI subsystem is here:
29 <http://www.lesswatts.org/projects/acpi/>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31 Linux support for ACPI is based on Intel Corporation's ACPI
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070032 Component Architecture (ACPI CA). For more information on the
33 ACPI CA, see:
34 <http://acpica.org/>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070036 ACPI is an open industry specification co-developed by
37 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
38 The specification is available at:
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 <http://www.acpi.info>
40
Len Brown3e11c3c2005-05-27 04:53:27 -040041if ACPI
42
Len Brown673d5b42007-07-28 03:33:16 -040043config ACPI_SLEEP
44 bool
Rafael J. Wysocki5d1e0722008-10-22 14:58:43 -040045 depends on SUSPEND || HIBERNATION
Len Brown673d5b42007-07-28 03:33:16 -040046 default y
47
Zhang Ruib981c592007-01-29 11:02:30 +080048config ACPI_PROCFS
Len Brownfb804712007-07-24 01:50:46 -040049 bool "Deprecated /proc/acpi files"
50 depends on PROC_FS
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070051 help
Len Brownfb804712007-07-24 01:50:46 -040052 For backwards compatibility, this option allows
Rolf Eike Beer405bbe9f2007-10-20 03:10:57 +020053 deprecated /proc/acpi/ files to exist, even when
Len Brownfb804712007-07-24 01:50:46 -040054 they have been replaced by functions in /sys.
55 The deprecated files (and their replacements) include:
56
Len Brown43532c82007-07-24 02:16:50 -040057 /proc/acpi/sleep (/sys/power/state)
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070058 /proc/acpi/info (/sys/module/acpi/parameters/acpica_version)
Len Brownfb804712007-07-24 01:50:46 -040059 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
63
64 This option has no effect on /proc/acpi/ files
65 and functions which do not yet exist in /sys.
66
67 Say N to delete /proc/acpi/ files that have moved to /sys/
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070068
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030069config ACPI_PROCFS_POWER
Alan Cox9e527972008-01-03 16:31:42 +000070 bool "Deprecated power /proc/acpi directories"
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030071 depends on PROC_FS
72 default y
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070073 help
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030074 For backwards compatibility, this option allows
Alan Cox9e527972008-01-03 16:31:42 +000075 deprecated power /proc/acpi/ directories to exist, even when
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030076 they have been replaced by functions in /sys.
Alan Cox9e527972008-01-03 16:31:42 +000077 The deprecated directories (and their replacements) include:
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030078 /proc/acpi/battery/* (/sys/class/power_supply/*)
79 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
Alan Cox9e527972008-01-03 16:31:42 +000080 This option has no effect on /proc/acpi/ directories
Alexey Starikovskiyfdcedbb2007-11-19 16:33:45 +030081 and functions, which do not yet exist in /sys
Zhang Ruib981c592007-01-29 11:02:30 +080082
Alan Cox9e527972008-01-03 16:31:42 +000083 Say N to delete power /proc/acpi/ directories that have moved to /sys/
84
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050085config ACPI_SYSFS_POWER
86 bool "Future power /sys interface"
87 select POWER_SUPPLY
88 default y
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070089 help
Alexey Starikovskiy97749cd2008-01-01 14:27:24 -050090 Say N to disable power /sys interface
Alan Cox9e527972008-01-03 16:31:42 +000091
Len Brown14e04fb2007-08-23 15:20:26 -040092config ACPI_PROC_EVENT
93 bool "Deprecated /proc/acpi/event support"
94 depends on PROC_FS
Hugh Dickins721ebe02007-08-27 16:04:39 +010095 default y
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -070096 help
97 A user-space daemon, acpid, typically reads /proc/acpi/event
98 and handles all ACPI-generated events.
Len Brown14e04fb2007-08-23 15:20:26 -040099
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700100 These events are now delivered to user-space either
101 via the input layer or as netlink events.
Len Brown14e04fb2007-08-23 15:20:26 -0400102
Hugh Dickins721ebe02007-08-27 16:04:39 +0100103 This build option enables the old code for legacy
Len Brown14e04fb2007-08-23 15:20:26 -0400104 user-space implementation. After some time, this will
105 be moved under CONFIG_ACPI_PROCFS, and then deleted.
106
Hugh Dickins721ebe02007-08-27 16:04:39 +0100107 Say Y here to retain the old behaviour. Say N if your
108 user-space is newer than kernel 2.6.23 (September 2007).
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110config ACPI_AC
111 tristate "AC Adapter"
Alexey Starikovskiy5527c8b2007-10-29 17:08:59 -0400112 depends on X86
Len Brown07fefe42005-08-25 12:22:04 -0400113 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700115 This driver supports the AC Adapter object, which indicates
116 whether a system is on AC or not. If you have a system that can
Len Brown07fefe42005-08-25 12:22:04 -0400117 switch between A/C and battery, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700119 To compile this driver as a module, choose M here:
120 the module will be called ac.
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122config ACPI_BATTERY
123 tristate "Battery"
Alexey Starikovskiy5527c8b2007-10-29 17:08:59 -0400124 depends on X86
Len Brown07fefe42005-08-25 12:22:04 -0400125 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 help
127 This driver adds support for battery information through
128 /proc/acpi/battery. If you have a mobile system with a battery,
129 say Y.
130
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700131 To compile this driver as a module, choose M here:
132 the module will be called battery.
133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134config ACPI_BUTTON
135 tristate "Button"
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500136 depends on INPUT
Len Brown07fefe42005-08-25 12:22:04 -0400137 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700139 This driver handles events on the power, sleep, and lid buttons.
Len Brown07fefe42005-08-25 12:22:04 -0400140 A daemon reads /proc/acpi/event and perform user-defined actions
141 such as shutting down the system. This is necessary for
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700142 software-controlled poweroff.
143
144 To compile this driver as a module, choose M here:
145 the module will be called button.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146
147config ACPI_VIDEO
148 tristate "Video"
Luming Yu23b0f012007-05-09 21:07:05 +0800149 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
Andreas Herrmann03e2bf22007-09-17 23:41:05 +0200150 depends on INPUT
Zhang Rui63c4ec92008-04-21 16:07:13 +0800151 select THERMAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700153 This driver implements the ACPI Extensions For Display Adapters
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 for integrated graphics devices on motherboard, as specified in
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700155 ACPI 2.0 Specification, Appendix B. This supports basic operations
156 such as defining the video POST device, retrieving EDID information,
157 and setting up a video output.
158
159 To compile this driver as a module, choose M here:
160 the module will be called video.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162config ACPI_FAN
163 tristate "Fan"
Zhang Rui63c4ec92008-04-21 16:07:13 +0800164 select THERMAL
Len Brown07fefe42005-08-25 12:22:04 -0400165 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700167 This driver supports ACPI fan devices, allowing user-mode
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 applications to perform basic fan control (on, off, status).
169
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700170 To compile this driver as a module, choose M here:
171 the module will be called fan.
172
Len Brownc8f7a62c2006-07-09 17:22:28 -0400173config ACPI_DOCK
Shaohua Li898b0542008-09-27 11:10:28 +0800174 bool "Dock"
Len Brown8d7bff62006-07-09 22:09:57 -0400175 depends on EXPERIMENTAL
Len Brownc8f7a62c2006-07-09 17:22:28 -0400176 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700177 This driver supports ACPI-controlled docking stations and removable
178 drive bays such as the IBM Ultrabay and the Dell Module Bay.
Kristen Carlson Accardi01b57e72006-10-20 14:30:25 -0700179
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180config ACPI_PROCESSOR
181 tristate "Processor"
Zhang Rui63c4ec92008-04-21 16:07:13 +0800182 select THERMAL
Len Brown07fefe42005-08-25 12:22:04 -0400183 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700185 This driver installs ACPI as the idle handler for Linux and uses
186 ACPI C2 and C3 processor states to save power on systems that
Len Brown07fefe42005-08-25 12:22:04 -0400187 support it. It is required by several flavors of cpufreq
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700188 performance-state drivers.
189
190 To compile this driver as a module, choose M here:
191 the module will be called processor.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
193config ACPI_HOTPLUG_CPU
Adrian Bunkcbfc1ba2005-07-30 04:18:00 -0400194 bool
195 depends on ACPI_PROCESSOR && HOTPLUG_CPU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 select ACPI_CONTAINER
Adrian Bunkcbfc1ba2005-07-30 04:18:00 -0400197 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198
199config ACPI_THERMAL
200 tristate "Thermal Zone"
201 depends on ACPI_PROCESSOR
Zhang Rui3f655ef2008-01-17 15:51:11 +0800202 select THERMAL
Len Brown07fefe42005-08-25 12:22:04 -0400203 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700205 This driver supports ACPI thermal zones. Most mobile and
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 some desktop systems support ACPI thermal zones. It is HIGHLY
207 recommended that this option be enabled, as your processor(s)
208 may be damaged without it.
209
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700210 To compile this driver as a module, choose M here:
211 the module will be called thermal.
212
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213config ACPI_NUMA
214 bool "NUMA support"
215 depends on NUMA
Yasunori Goto762834e2006-06-23 02:03:19 -0700216 depends on (X86 || IA64)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 default y if IA64_GENERIC || IA64_SGI_SN2
218
Randy Dunlap7ce95732008-02-22 11:25:04 -0800219config ACPI_CUSTOM_DSDT_FILE
220 string "Custom DSDT Table file to include"
221 default ""
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 depends on !STANDALONE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 help
Len Brownd89e9d62008-02-06 19:28:02 -0500224 This option supports a custom DSDT by linking it into the kernel.
225 See Documentation/acpi/dsdt-override.txt
226
Uwe Zeisbergerc30fe7f2006-03-24 18:23:14 +0100227 Enter the full path name to the file which includes the AmlCode
228 declaration.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
Randy Dunlap7ce95732008-02-22 11:25:04 -0800230 If unsure, don't enter a file name.
231
232config ACPI_CUSTOM_DSDT
233 bool
234 default ACPI_CUSTOM_DSDT_FILE != ""
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236config ACPI_BLACKLIST_YEAR
Andi Kleen2eb1bdb2006-02-26 04:18:43 +0100237 int "Disable ACPI for systems before Jan 1st this year" if X86_32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 default 0
239 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700240 Enter a 4-digit year, e.g., 2001, to disable ACPI by default
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 on platforms with DMI BIOS date before January 1st that year.
242 "acpi=force" can be used to override this mechanism.
243
244 Enter 0 to disable this mechanism and allow ACPI to
245 run by default no matter what the year. (default)
246
247config ACPI_DEBUG
248 bool "Debug Statements"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 default n
250 help
Bjorn Helgaasa0d84a92008-11-07 16:58:05 -0700251 The ACPI subsystem can produce debug output. Saying Y enables this
252 output and increases the kernel size by around 50K.
253
254 Use the acpi.debug_layer and acpi.debug_level kernel command-line
255 parameters documented in Documentation/acpi/debug.txt and
256 Documentation/kernel-parameters.txt to control the type and
257 amount of debug output.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Thomas Renninger798d91032007-05-31 17:20:39 +0200259config ACPI_DEBUG_FUNC_TRACE
260 bool "Additionally enable ACPI function tracing"
261 default n
262 depends on ACPI_DEBUG
263 help
264 ACPI Debug Statements slow down ACPI processing. Function trace
265 is about half of the penalty and is rarely useful.
266
Alex Chiang8344b562008-06-10 15:30:42 -0600267config ACPI_PCI_SLOT
268 tristate "PCI slot detection driver"
Alex Chiang268a03a2009-06-17 19:03:57 -0600269 depends on SYSFS
Alex Chiang8344b562008-06-10 15:30:42 -0600270 default n
271 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700272 This driver creates entries in /sys/bus/pci/slots/ for all PCI
273 slots in the system. This can help correlate PCI bus addresses,
274 i.e., segment/bus/device/function tuples, with physical slots in
275 the system. If you are unsure, say N.
276
277 To compile this driver as a module, choose M here:
278 the module will be called pci_slot.
Alex Chiang8344b562008-06-10 15:30:42 -0600279
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280config X86_PM_TIMER
Andi Kleene78256b2006-02-26 04:18:37 +0100281 bool "Power Management Timer Support" if EMBEDDED
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 depends on X86
Len Brown07fefe42005-08-25 12:22:04 -0400283 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 help
285 The Power Management Timer is available on all ACPI-capable,
286 in most cases even if ACPI is unusable or blacklisted.
287
Matt LaPlantec73a6682006-10-03 22:24:43 +0200288 This timing source is not affected by power management features
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 like aggressive processor idling, throttling, frequency and/or
290 voltage scaling, unlike the commonly used Time Stamp Counter
291 (TSC) timing source.
292
Andi Kleene78256b2006-02-26 04:18:37 +0100293 You should nearly always say Y here because many modern
294 systems require this timer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
296config ACPI_CONTAINER
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700297 tristate "Container and Module Devices (EXPERIMENTAL)"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 depends on EXPERIMENTAL
299 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700300 help
301 This driver supports ACPI Container and Module devices (IDs
302 ACPI0004, PNP0A05, and PNP0A06).
Keiichiro Tokunaga45b1b192005-03-02 00:00:00 -0500303
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700304 This helps support hotplug of nodes, CPUs, and memory.
305
306 To compile this driver as a module, choose M here:
307 the module will be called container.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
309config ACPI_HOTPLUG_MEMORY
310 tristate "Memory Hotplug"
Yasunori Gotobc02af92006-06-27 02:53:30 -0700311 depends on MEMORY_HOTPLUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 default n
313 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700314 This driver supports ACPI memory hotplug. The driver
315 fields notifications on ACPI memory devices (PNP0C80),
316 which represent memory ranges that may be onlined or
317 offlined during runtime.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700319 If your hardware and firmware do not support adding or
320 removing memory devices at runtime, you need not enable
321 this driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700323 To compile this driver as a module, choose M here:
324 the module will be called acpi_memhotplug.
Rich Townsend3f86b832006-07-01 11:36:54 -0400325
326config ACPI_SBS
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400327 tristate "Smart Battery System"
Vladimir Lebedevb4150fc2007-03-19 17:45:50 +0300328 depends on X86
Rich Townsend3f86b832006-07-01 11:36:54 -0400329 help
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700330 This driver supports the Smart Battery System, another
Alexey Starikovskiy94f6c082007-09-26 19:43:48 +0400331 type of access to battery information, found on some laptops.
Rich Townsend3f86b832006-07-01 11:36:54 -0400332
Bjorn Helgaas1c48aa32009-02-19 14:45:47 -0700333 To compile this driver as a module, choose M here:
334 the modules will be called sbs and sbshc.
335
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336endif # ACPI