5 menu "ACPI (Advanced Configuration and Power Interface) Support"
8 depends on !IA64_HP_SIM
13 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>
50 config ACPI_INTERPRETER
52 depends on !IA64_SGI_SN
58 bool "Sleep States (EXPERIMENTAL)"
60 depends on EXPERIMENTAL
63 This option adds support for ACPI suspend states.
65 With this option, you will be able to put the system "to sleep".
66 Sleep states are low power states for the system and devices. All
67 of the system operating state is saved to either memory or disk
68 (depending on the state), to allow the system to resume operation
69 quickly at your request.
71 Although this option sounds really nifty, barely any of the device
72 drivers have been converted to the new driver model and hence few
73 have proper power management support.
75 This option is not recommended for anyone except those doing driver
76 power management development.
78 config ACPI_SLEEP_PROC_FS
80 depends on ACPI_SLEEP && PROC_FS
88 This driver adds support for the AC Adapter object, which indicates
89 whether a system is on AC, or not. Typically, only mobile systems
90 have this object, since desktops are always on AC.
97 This driver adds support for battery information through
98 /proc/acpi/battery. If you have a mobile system with a battery,
103 depends on !IA64_SGI_SN
106 This driver registers for events based on buttons, such as the
107 power, sleep, and lid switch. In the future, a daemon will read
108 /proc/acpi/event and perform user-defined actions such as shutting
109 down the system. Until then, you can cat it, and see output when
114 depends on EXPERIMENTAL
115 depends on !IA64_SGI_SN
118 This driver implement the ACPI Extensions For Display Adapters
119 for integrated graphics devices on motherboard, as specified in
120 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
121 control like defining the video POST device, retrieving EDID information
122 or to setup a video output, etc.
123 Note that this is an ref. implementation only. It may or may not work
124 for your integrated video device.
127 tristate "Generic Hotkey"
128 depends on ACPI_INTERPRETER
129 depends on EXPERIMENTAL
130 depends on !IA64_SGI_SN
137 depends on !IA64_SGI_SN
140 This driver adds support for ACPI fan devices, allowing user-mode
141 applications to perform basic fan control (on, off, status).
143 config ACPI_PROCESSOR
145 depends on !IA64_SGI_SN
148 This driver installs ACPI as the idle handler for Linux, and uses
149 ACPI C2 and C3 processor states to save power, on systems that
152 config ACPI_HOTPLUG_CPU
153 bool "Processor Hotplug (EXPERIMENTAL)"
154 depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
155 depends on !IA64_SGI_SN
156 select ACPI_CONTAINER
159 Select this option if your platform support physical CPU hotplug.
162 tristate "Thermal Zone"
163 depends on ACPI_PROCESSOR
166 This driver adds support for ACPI thermal zones. Most mobile and
167 some desktop systems support ACPI thermal zones. It is HIGHLY
168 recommended that this option be enabled, as your processor(s)
169 may be damaged without it.
174 depends on (IA64 || X86_64)
175 default y if IA64_GENERIC || IA64_SGI_SN2
178 tristate "ASUS/Medion Laptop Extras"
182 This driver provides support for extra features of ACPI-compatible
183 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
184 support some Medion laptops (such as 9675 for example). It makes all
185 the extra buttons generate standard ACPI events that go through
186 /proc/acpi/events, and (on some models) adds support for changing the
187 display brightness and output, switching the LCD backlight on and off,
188 and most importantly, allows you to blink those fancy LEDs intended
189 for reporting mail and wireless status.
191 Note: display switching code is currently considered EXPERIMENTAL,
192 toying with these values may even lock your machine.
194 All settings are changed via /proc/acpi/asus directory entries. Owner
195 and group for these entries can be set with asus_uid and asus_gid
198 More information and a userspace daemon for handling the extra buttons
199 at <http://sourceforge.net/projects/acpi4asus/>.
201 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
202 driver is still under development, so if your laptop is unsupported or
203 something works not quite as expected, please use the mailing list
204 available on the above page (acpi4asus-user@lists.sourceforge.net)
207 tristate "IBM ThinkPad Laptop Extras"
211 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
212 support for Fn-Fx key combinations, Bluetooth control, video
213 output switching, ThinkLight control, UltraBay eject and more.
214 For more information about this driver see <file:Documentation/ibm-acpi.txt>
215 and <http://ibm-acpi.sf.net/> .
217 If you have an IBM ThinkPad laptop, say Y or M here.
220 tristate "Toshiba Laptop Extras"
224 This driver adds support for access to certain system settings
225 on "legacy free" Toshiba laptops. These laptops can be recognized by
226 their lack of a BIOS setup menu and APM support.
228 On these machines, all system configuration is handled through the
229 ACPI. This driver is required for access to controls not covered
230 by the general ACPI drivers, such as LCD brightness, video output,
233 This driver differs from the non-ACPI Toshiba laptop driver (located
234 under "Processor type and features") in several aspects.
235 Configuration is accessed by reading and writing text files in the
236 /proc tree instead of by program interface to /dev. Furthermore, no
237 power management functions are exposed, as those are handled by the
238 general ACPI drivers.
240 More information about this driver is available at
241 <http://memebeam.org/toys/ToshibaAcpiDriver>.
243 If you have a legacy free Toshiba laptop (such as the Libretto L1
246 config ACPI_CUSTOM_DSDT
247 bool "Include Custom DSDT"
248 depends on !STANDALONE
251 Thist option is to load a custom ACPI DSDT
252 If you don't know what that is, say N.
254 config ACPI_CUSTOM_DSDT_FILE
255 string "Custom DSDT Table file to include"
256 depends on ACPI_CUSTOM_DSDT
259 Enter the full path name to the file wich includes the AmlCode declaration.
261 config ACPI_BLACKLIST_YEAR
262 int "Disable ACPI for systems before Jan 1st this year"
263 depends on ACPI_INTERPRETER
266 enter a 4-digit year, eg. 2001 to disable ACPI by default
267 on platforms with DMI BIOS date before January 1st that year.
268 "acpi=force" can be used to override this mechanism.
270 Enter 0 to disable this mechanism and allow ACPI to
271 run by default no matter what the year. (default)
274 bool "Debug Statements"
275 depends on !IA64_SGI_SN
278 The ACPI driver can optionally report errors with a great deal
279 of verbosity. Saying Y enables these statements. This will increase
280 your kernel size by around 50K.
284 depends on !IA64_SGI_SN
292 This driver is required on some systems for the proper operation of
293 the battery and thermal drivers. If you are compiling for a
294 mobile system, say Y.
298 depends on !IA64_SGI_SN
303 depends on !IA64_SGI_SN
308 depends on !IA64_SGI_SN
311 This driver will enable your system to shut down using ACPI, and
312 dump your ACPI DSDT table using /proc/acpi/dsdt.
314 endif # ACPI_INTERPRETER
317 bool "Power Management Timer Support"
319 depends on ACPI_BOOT && EXPERIMENTAL
323 The Power Management Timer is available on all ACPI-capable,
324 in most cases even if ACPI is unusable or blacklisted.
326 This timing source is not affected by powermanagement features
327 like aggressive processor idling, throttling, frequency and/or
328 voltage scaling, unlike the commonly used Time Stamp Counter
331 So, if you see messages like 'Losing too many ticks!' in the
332 kernel logs, and/or you are using this on a notebook which
333 does not yet have an HPET, you should say "Y" here.
335 config ACPI_CONTAINER
336 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
337 depends on EXPERIMENTAL
338 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
340 This allows _physical_ insertion and removal of CPUs and memory.
341 This can be useful, for example, on NUMA machines that support
342 ACPI based physical hotplug of nodes, or non-NUMA machines that
343 support physical cpu/memory hot-plug.
345 If one selects "m", this driver can be loaded with
346 "modprobe acpi_container".
348 config ACPI_HOTPLUG_MEMORY
349 tristate "Memory Hotplug"
351 depends on MEMORY_HOTPLUG
354 This driver adds supports for ACPI Memory Hotplug. This driver
355 provides support for fielding notifications on ACPI memory
356 devices (PNP0C80) which represent memory ranges that may be
357 onlined or offlined during runtime.
359 Enabling this driver assumes that your platform hardware
360 and firmware have support for hot-plugging physical memory. If
361 your system does not support physically adding or ripping out
362 memory DIMMs at some platfrom defined granularity (individually
363 or as a bank) at runtime, then you need not enable this driver.
365 If one selects "m," this driver can be loaded using the following
367 $>modprobe acpi_memhotplug