5 menu "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
12 depends on IA64 || X86
17 Advanced Configuration and Power Interface (ACPI) support for
18 Linux requires an ACPI compliant platform (hardware/firmware),
19 and assumes the presence of OS-directed configuration and power
20 management (OSPM) software. This option will enlarge your
23 Linux ACPI provides a robust functional replacement for several
24 legacy configuration and power management interfaces, including
25 the Plug-and-Play BIOS specification (PnP BIOS), the
26 MultiProcessor Specification (MPS), and the Advanced Power
27 Management (APM) specification. If both ACPI and APM support
28 are configured, whichever is loaded first shall be used.
30 The ACPI SourceForge project contains the latest source code,
31 documentation, tools, mailing list subscription, and other
32 information. This project is available at:
33 <http://sourceforge.net/projects/acpi>
35 Linux support for ACPI is based on Intel Corporation's ACPI
36 Component Architecture (ACPI CA). For more information see:
37 <http://developer.intel.com/technology/iapc/acpi>
39 ACPI is an open industry specification co-developed by Compaq,
40 Intel, Microsoft, Phoenix, and Toshiba. The specification is
42 <http://www.acpi.info>
48 depends on X86 && (!SMP || SUSPEND_SMP)
52 This option adds support for ACPI suspend states.
54 With this option, you will be able to put the system "to sleep".
55 Sleep states are low power states for the system and devices. All
56 of the system operating state is saved to either memory or disk
57 (depending on the state), to allow the system to resume operation
58 quickly at your request.
60 Although this option sounds really nifty, barely any of the device
61 drivers have been converted to the new driver model and hence few
62 have proper power management support.
64 This option is not recommended for anyone except those doing driver
65 power management development.
67 config ACPI_SLEEP_PROC_FS
69 depends on ACPI_SLEEP && PROC_FS
72 config ACPI_SLEEP_PROC_SLEEP
73 bool "/proc/acpi/sleep (deprecated)"
74 depends on ACPI_SLEEP_PROC_FS
77 Create /proc/acpi/sleep
78 Deprecated by /sys/power/state
81 bool "Procfs interface (deprecated)"
85 Procfs interface for ACPI is made optional for back-compatible.
86 As the same functions are duplicated in sysfs interface
87 and this proc interface will be removed some time later,
88 it's marked as deprecated.
95 This driver adds support for the AC Adapter object, which indicates
96 whether a system is on AC, or not. If you have a system that can
97 switch between A/C and battery, say Y.
104 This driver adds support for battery information through
105 /proc/acpi/battery. If you have a mobile system with a battery,
112 This driver handles events on the power, sleep and lid buttons.
113 A daemon reads /proc/acpi/event and perform user-defined actions
114 such as shutting down the system. This is necessary for
115 software controlled poweroff.
121 This driver implement the ACPI Extensions For Display Adapters
122 for integrated graphics devices on motherboard, as specified in
123 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
124 control like defining the video POST device, retrieving EDID information
125 or to setup a video output, etc.
126 Note that this is an ref. implementation only. It may or may not work
127 for your integrated video device.
130 tristate "Generic Hotkey (EXPERIMENTAL)"
131 depends on EXPERIMENTAL
135 Experimental consolidated hotkey driver.
136 If you are unsure, say N.
142 This driver adds support for ACPI fan devices, allowing user-mode
143 applications to perform basic fan control (on, off, status).
147 depends on EXPERIMENTAL
149 This driver adds support for ACPI controlled docking stations
151 config ACPI_PROCESSOR
155 This driver installs ACPI as the idle handler for Linux, and uses
156 ACPI C2 and C3 processor states to save power, on systems that
157 support it. It is required by several flavors of cpufreq
158 Performance-state drivers.
160 config ACPI_HOTPLUG_CPU
162 depends on ACPI_PROCESSOR && HOTPLUG_CPU
163 select ACPI_CONTAINER
167 tristate "Thermal Zone"
168 depends on ACPI_PROCESSOR
171 This driver adds support for ACPI thermal zones. Most mobile and
172 some desktop systems support ACPI thermal zones. It is HIGHLY
173 recommended that this option be enabled, as your processor(s)
174 may be damaged without it.
179 depends on (X86 || IA64)
180 default y if IA64_GENERIC || IA64_SGI_SN2
183 tristate "ASUS/Medion Laptop Extras"
186 This driver provides support for extra features of ACPI-compatible
187 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
188 support some Medion laptops (such as 9675 for example). It makes all
189 the extra buttons generate standard ACPI events that go through
190 /proc/acpi/events, and (on some models) adds support for changing the
191 display brightness and output, switching the LCD backlight on and off,
192 and most importantly, allows you to blink those fancy LEDs intended
193 for reporting mail and wireless status.
195 Note: display switching code is currently considered EXPERIMENTAL,
196 toying with these values may even lock your machine.
198 All settings are changed via /proc/acpi/asus directory entries. Owner
199 and group for these entries can be set with asus_uid and asus_gid
202 More information and a userspace daemon for handling the extra buttons
203 at <http://sourceforge.net/projects/acpi4asus/>.
205 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
206 driver is still under development, so if your laptop is unsupported or
207 something works not quite as expected, please use the mailing list
208 available on the above page (acpi4asus-user@lists.sourceforge.net)
211 tristate "IBM ThinkPad Laptop Extras"
214 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
215 support for Fn-Fx key combinations, Bluetooth control, video
216 output switching, ThinkLight control, UltraBay eject and more.
217 For more information about this driver see <file:Documentation/ibm-acpi.txt>
218 and <http://ibm-acpi.sf.net/> .
220 If you have an IBM ThinkPad laptop, say Y or M here.
223 bool "Legacy Docking Station Support"
225 depends on ACPI_DOCK=n
228 Allows the ibm_acpi driver to handle docking station events.
229 This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI. It will
230 allow locking and removing the laptop from the docking station,
231 but will not properly connect PCI devices.
233 If you are not sure, say N here.
236 tristate "Toshiba Laptop Extras"
239 This driver adds support for access to certain system settings
240 on "legacy free" Toshiba laptops. These laptops can be recognized by
241 their lack of a BIOS setup menu and APM support.
243 On these machines, all system configuration is handled through the
244 ACPI. This driver is required for access to controls not covered
245 by the general ACPI drivers, such as LCD brightness, video output,
248 This driver differs from the non-ACPI Toshiba laptop driver (located
249 under "Processor type and features") in several aspects.
250 Configuration is accessed by reading and writing text files in the
251 /proc tree instead of by program interface to /dev. Furthermore, no
252 power management functions are exposed, as those are handled by the
253 general ACPI drivers.
255 More information about this driver is available at
256 <http://memebeam.org/toys/ToshibaAcpiDriver>.
258 If you have a legacy free Toshiba laptop (such as the Libretto L1
261 config ACPI_CUSTOM_DSDT
262 bool "Include Custom DSDT"
263 depends on !STANDALONE
266 This option is to load a custom ACPI DSDT
267 If you don't know what that is, say N.
269 config ACPI_CUSTOM_DSDT_FILE
270 string "Custom DSDT Table file to include"
271 depends on ACPI_CUSTOM_DSDT
274 Enter the full path name to the file which includes the AmlCode
277 config ACPI_BLACKLIST_YEAR
278 int "Disable ACPI for systems before Jan 1st this year" if X86_32
281 enter a 4-digit year, eg. 2001 to disable ACPI by default
282 on platforms with DMI BIOS date before January 1st that year.
283 "acpi=force" can be used to override this mechanism.
285 Enter 0 to disable this mechanism and allow ACPI to
286 run by default no matter what the year. (default)
289 bool "Debug Statements"
292 The ACPI driver can optionally report errors with a great deal
293 of verbosity. Saying Y enables these statements. This will increase
294 your kernel size by around 50K.
300 This driver is required on some systems for the proper operation of
301 the battery and thermal drivers. If you are compiling for a
302 mobile system, say Y.
312 This driver will enable your system to shut down using ACPI, and
313 dump your ACPI DSDT table using /proc/acpi/dsdt.
316 bool "Power Management Timer Support" if EMBEDDED
320 The Power Management Timer is available on all ACPI-capable,
321 in most cases even if ACPI is unusable or blacklisted.
323 This timing source is not affected by power management features
324 like aggressive processor idling, throttling, frequency and/or
325 voltage scaling, unlike the commonly used Time Stamp Counter
328 You should nearly always say Y here because many modern
329 systems require this timer.
331 config ACPI_CONTAINER
332 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
333 depends on EXPERIMENTAL
334 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
336 This allows _physical_ insertion and removal of CPUs and memory.
337 This can be useful, for example, on NUMA machines that support
338 ACPI based physical hotplug of nodes, or non-NUMA machines that
339 support physical cpu/memory hot-plug.
341 If one selects "m", this driver can be loaded with
342 "modprobe acpi_container".
344 config ACPI_HOTPLUG_MEMORY
345 tristate "Memory Hotplug"
347 depends on MEMORY_HOTPLUG
350 This driver adds supports for ACPI Memory Hotplug. This driver
351 provides support for fielding notifications on ACPI memory
352 devices (PNP0C80) which represent memory ranges that may be
353 onlined or offlined during runtime.
355 Enabling this driver assumes that your platform hardware
356 and firmware have support for hot-plugging physical memory. If
357 your system does not support physically adding or ripping out
358 memory DIMMs at some platform defined granularity (individually
359 or as a bank) at runtime, then you need not enable this driver.
361 If one selects "m," this driver can be loaded using the following
363 $>modprobe acpi_memhotplug
366 tristate "Smart Battery System (EXPERIMENTAL)"
367 depends on X86 && I2C
368 depends on EXPERIMENTAL
370 This driver adds support for the Smart Battery System.
371 Depends on I2C (Device Drivers ---> I2C support)
372 A "Smart Battery" is quite old and quite rare compared
373 to today's ACPI "Control Method" battery.