5 menu "ACPI (Advanced Configuration and Power Interface) Support"
8 depends on !IA64_HP_SIM
13 depends on IA64 || X86
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
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, whichever is loaded first shall be used.
31 The ACPI SourceForge project contains the latest source code,
32 documentation, tools, mailing list subscription, and other
33 information. This project is available at:
34 <http://sourceforge.net/projects/acpi>
36 Linux support for ACPI is based on Intel Corporation's ACPI
37 Component Architecture (ACPI CA). For more information see:
38 <http://developer.intel.com/technology/iapc/acpi>
40 ACPI is an open industry specification co-developed by Compaq,
41 Intel, Microsoft, Phoenix, and Toshiba. The specification is
43 <http://www.acpi.info>
49 depends on X86 && (!SMP || SUSPEND_SMP)
53 This option adds support for ACPI suspend states.
55 With this option, you will be able to put the system "to sleep".
56 Sleep states are low power states for the system and devices. All
57 of the system operating state is saved to either memory or disk
58 (depending on the state), to allow the system to resume operation
59 quickly at your request.
61 Although this option sounds really nifty, barely any of the device
62 drivers have been converted to the new driver model and hence few
63 have proper power management support.
65 This option is not recommended for anyone except those doing driver
66 power management development.
68 config ACPI_SLEEP_PROC_FS
70 depends on ACPI_SLEEP && PROC_FS
73 config ACPI_SLEEP_PROC_SLEEP
74 bool "/proc/acpi/sleep (deprecated)"
75 depends on ACPI_SLEEP_PROC_FS
78 Create /proc/acpi/sleep
79 Deprecated by /sys/power/state
86 This driver adds support for the AC Adapter object, which indicates
87 whether a system is on AC, or not. If you have a system that can
88 switch between A/C and battery, say Y.
95 This driver adds support for battery information through
96 /proc/acpi/battery. If you have a mobile system with a battery,
104 This driver handles events on the power, sleep and lid buttons.
105 A daemon reads /proc/acpi/event and perform user-defined actions
106 such as shutting down the system. This is necessary for
107 software controlled poweroff.
113 This driver implement the ACPI Extensions For Display Adapters
114 for integrated graphics devices on motherboard, as specified in
115 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
116 control like defining the video POST device, retrieving EDID information
117 or to setup a video output, etc.
118 Note that this is an ref. implementation only. It may or may not work
119 for your integrated video device.
122 tristate "Generic Hotkey (EXPERIMENTAL)"
123 depends on EXPERIMENTAL
127 Experimental consolidated hotkey driver.
128 If you are unsure, say N.
134 This driver adds support for ACPI fan devices, allowing user-mode
135 applications to perform basic fan control (on, off, status).
139 depends on EXPERIMENTAL
141 This driver adds support for ACPI controlled docking stations
143 config ACPI_PROCESSOR
147 This driver installs ACPI as the idle handler for Linux, and uses
148 ACPI C2 and C3 processor states to save power, on systems that
149 support it. It is required by several flavors of cpufreq
150 Performance-state drivers.
152 config ACPI_HOTPLUG_CPU
154 depends on ACPI_PROCESSOR && HOTPLUG_CPU
155 select ACPI_CONTAINER
159 tristate "Thermal Zone"
160 depends on ACPI_PROCESSOR
163 This driver adds support for ACPI thermal zones. Most mobile and
164 some desktop systems support ACPI thermal zones. It is HIGHLY
165 recommended that this option be enabled, as your processor(s)
166 may be damaged without it.
171 depends on (X86 || IA64)
172 default y if IA64_GENERIC || IA64_SGI_SN2
175 tristate "ASUS/Medion Laptop Extras"
177 select BACKLIGHT_CLASS_DEVICE
179 This driver provides support for extra features of ACPI-compatible
180 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
181 support some Medion laptops (such as 9675 for example). It makes all
182 the extra buttons generate standard ACPI events that go through
183 /proc/acpi/events, and (on some models) adds support for changing the
184 display brightness and output, switching the LCD backlight on and off,
185 and most importantly, allows you to blink those fancy LEDs intended
186 for reporting mail and wireless status.
188 Note: display switching code is currently considered EXPERIMENTAL,
189 toying with these values may even lock your machine.
191 All settings are changed via /proc/acpi/asus directory entries. Owner
192 and group for these entries can be set with asus_uid and asus_gid
195 More information and a userspace daemon for handling the extra buttons
196 at <http://sourceforge.net/projects/acpi4asus/>.
198 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
199 driver is still under development, so if your laptop is unsupported or
200 something works not quite as expected, please use the mailing list
201 available on the above page (acpi4asus-user@lists.sourceforge.net)
204 tristate "IBM ThinkPad Laptop Extras"
206 select BACKLIGHT_CLASS_DEVICE
208 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
209 support for Fn-Fx key combinations, Bluetooth control, video
210 output switching, ThinkLight control, UltraBay eject and more.
211 For more information about this driver see <file:Documentation/ibm-acpi.txt>
212 and <http://ibm-acpi.sf.net/> .
214 If you have an IBM ThinkPad laptop, say Y or M here.
217 bool "Legacy Docking Station Support"
219 depends on ACPI_DOCK=n
222 Allows the ibm_acpi driver to handle docking station events.
223 This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI. It will
224 allow locking and removing the laptop from the docking station,
225 but will not properly connect PCI devices.
227 If you are not sure, say N here.
230 tristate "Toshiba Laptop Extras"
232 select BACKLIGHT_CLASS_DEVICE
234 This driver adds support for access to certain system settings
235 on "legacy free" Toshiba laptops. These laptops can be recognized by
236 their lack of a BIOS setup menu and APM support.
238 On these machines, all system configuration is handled through the
239 ACPI. This driver is required for access to controls not covered
240 by the general ACPI drivers, such as LCD brightness, video output,
243 This driver differs from the non-ACPI Toshiba laptop driver (located
244 under "Processor type and features") in several aspects.
245 Configuration is accessed by reading and writing text files in the
246 /proc tree instead of by program interface to /dev. Furthermore, no
247 power management functions are exposed, as those are handled by the
248 general ACPI drivers.
250 More information about this driver is available at
251 <http://memebeam.org/toys/ToshibaAcpiDriver>.
253 If you have a legacy free Toshiba laptop (such as the Libretto L1
256 config ACPI_CUSTOM_DSDT
257 bool "Include Custom DSDT"
258 depends on !STANDALONE
261 This option is to load a custom ACPI DSDT
262 If you don't know what that is, say N.
264 config ACPI_CUSTOM_DSDT_FILE
265 string "Custom DSDT Table file to include"
266 depends on ACPI_CUSTOM_DSDT
269 Enter the full path name to the file which includes the AmlCode
272 config ACPI_BLACKLIST_YEAR
273 int "Disable ACPI for systems before Jan 1st this year" if X86_32
276 enter a 4-digit year, eg. 2001 to disable ACPI by default
277 on platforms with DMI BIOS date before January 1st that year.
278 "acpi=force" can be used to override this mechanism.
280 Enter 0 to disable this mechanism and allow ACPI to
281 run by default no matter what the year. (default)
284 bool "Debug Statements"
287 The ACPI driver can optionally report errors with a great deal
288 of verbosity. Saying Y enables these statements. This will increase
289 your kernel size by around 50K.
295 This driver is required on some systems for the proper operation of
296 the battery and thermal drivers. If you are compiling for a
297 mobile system, say Y.
307 This driver will enable your system to shut down using ACPI, and
308 dump your ACPI DSDT table using /proc/acpi/dsdt.
311 bool "Power Management Timer Support" if EMBEDDED
315 The Power Management Timer is available on all ACPI-capable,
316 in most cases even if ACPI is unusable or blacklisted.
318 This timing source is not affected by power management features
319 like aggressive processor idling, throttling, frequency and/or
320 voltage scaling, unlike the commonly used Time Stamp Counter
323 You should nearly always say Y here because many modern
324 systems require this timer.
326 config ACPI_CONTAINER
327 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
328 depends on EXPERIMENTAL
329 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
331 This allows _physical_ insertion and removal of CPUs and memory.
332 This can be useful, for example, on NUMA machines that support
333 ACPI based physical hotplug of nodes, or non-NUMA machines that
334 support physical cpu/memory hot-plug.
336 If one selects "m", this driver can be loaded with
337 "modprobe acpi_container".
339 config ACPI_HOTPLUG_MEMORY
340 tristate "Memory Hotplug"
342 depends on MEMORY_HOTPLUG
345 This driver adds supports for ACPI Memory Hotplug. This driver
346 provides support for fielding notifications on ACPI memory
347 devices (PNP0C80) which represent memory ranges that may be
348 onlined or offlined during runtime.
350 Enabling this driver assumes that your platform hardware
351 and firmware have support for hot-plugging physical memory. If
352 your system does not support physically adding or ripping out
353 memory DIMMs at some platform defined granularity (individually
354 or as a bank) at runtime, then you need not enable this driver.
356 If one selects "m," this driver can be loaded using the following
358 $>modprobe acpi_memhotplug
361 tristate "Smart Battery System (EXPERIMENTAL)"
362 depends on X86 && I2C
363 depends on EXPERIMENTAL
365 This driver adds support for the Smart Battery System.
366 Depends on I2C (Device Drivers ---> I2C support)
367 A "Smart Battery" is quite old and quite rare compared
368 to today's ACPI "Control Method" battery.