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
57 bool "Sleep States (EXPERIMENTAL)"
58 depends on X86 && (!SMP || SUSPEND_SMP)
59 depends on EXPERIMENTAL && PM
62 This option adds support for ACPI suspend states.
64 With this option, you will be able to put the system "to sleep".
65 Sleep states are low power states for the system and devices. All
66 of the system operating state is saved to either memory or disk
67 (depending on the state), to allow the system to resume operation
68 quickly at your request.
70 Although this option sounds really nifty, barely any of the device
71 drivers have been converted to the new driver model and hence few
72 have proper power management support.
74 This option is not recommended for anyone except those doing driver
75 power management development.
77 config ACPI_SLEEP_PROC_FS
79 depends on ACPI_SLEEP && PROC_FS
82 config ACPI_SLEEP_PROC_SLEEP
83 bool "/proc/acpi/sleep (deprecated)"
84 depends on ACPI_SLEEP_PROC_FS
87 Create /proc/acpi/sleep
88 Deprecated by /sys/power/state
95 This driver adds support for the AC Adapter object, which indicates
96 whether a system is on AC, or not. Typically, only mobile systems
97 have this object, since desktops are always on AC.
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 registers for events based on buttons, such as the
113 power, sleep, and lid switch. In the future, a daemon will read
114 /proc/acpi/event and perform user-defined actions such as shutting
115 down the system. Until then, you can cat it, and see output when
120 depends on EXPERIMENTAL
123 This driver implement the ACPI Extensions For Display Adapters
124 for integrated graphics devices on motherboard, as specified in
125 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
126 control like defining the video POST device, retrieving EDID information
127 or to setup a video output, etc.
128 Note that this is an ref. implementation only. It may or may not work
129 for your integrated video device.
132 tristate "Generic Hotkey"
133 depends on ACPI_INTERPRETER
134 depends on EXPERIMENTAL
135 depends on !IA64_SGI_SN
138 Experimental consolidated hotkey driver.
139 If you are unsure, say N.
145 This driver adds support for ACPI fan devices, allowing user-mode
146 applications to perform basic fan control (on, off, status).
148 config ACPI_PROCESSOR
152 This driver installs ACPI as the idle handler for Linux, and uses
153 ACPI C2 and C3 processor states to save power, on systems that
156 config ACPI_HOTPLUG_CPU
157 bool "Processor Hotplug (EXPERIMENTAL)"
158 depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
159 select ACPI_CONTAINER
162 Select this option if your platform support physical CPU hotplug.
165 tristate "Thermal Zone"
166 depends on ACPI_PROCESSOR
169 This driver adds support for ACPI thermal zones. Most mobile and
170 some desktop systems support ACPI thermal zones. It is HIGHLY
171 recommended that this option be enabled, as your processor(s)
172 may be damaged without it.
177 depends on (IA64 || X86_64)
178 default y if IA64_GENERIC || IA64_SGI_SN2
181 tristate "ASUS/Medion Laptop Extras"
185 This driver provides support for extra features of ACPI-compatible
186 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
187 support some Medion laptops (such as 9675 for example). It makes all
188 the extra buttons generate standard ACPI events that go through
189 /proc/acpi/events, and (on some models) adds support for changing the
190 display brightness and output, switching the LCD backlight on and off,
191 and most importantly, allows you to blink those fancy LEDs intended
192 for reporting mail and wireless status.
194 Note: display switching code is currently considered EXPERIMENTAL,
195 toying with these values may even lock your machine.
197 All settings are changed via /proc/acpi/asus directory entries. Owner
198 and group for these entries can be set with asus_uid and asus_gid
201 More information and a userspace daemon for handling the extra buttons
202 at <http://sourceforge.net/projects/acpi4asus/>.
204 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
205 driver is still under development, so if your laptop is unsupported or
206 something works not quite as expected, please use the mailing list
207 available on the above page (acpi4asus-user@lists.sourceforge.net)
210 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 tristate "Toshiba Laptop Extras"
227 This driver adds support for access to certain system settings
228 on "legacy free" Toshiba laptops. These laptops can be recognized by
229 their lack of a BIOS setup menu and APM support.
231 On these machines, all system configuration is handled through the
232 ACPI. This driver is required for access to controls not covered
233 by the general ACPI drivers, such as LCD brightness, video output,
236 This driver differs from the non-ACPI Toshiba laptop driver (located
237 under "Processor type and features") in several aspects.
238 Configuration is accessed by reading and writing text files in the
239 /proc tree instead of by program interface to /dev. Furthermore, no
240 power management functions are exposed, as those are handled by the
241 general ACPI drivers.
243 More information about this driver is available at
244 <http://memebeam.org/toys/ToshibaAcpiDriver>.
246 If you have a legacy free Toshiba laptop (such as the Libretto L1
249 config ACPI_CUSTOM_DSDT
250 bool "Include Custom DSDT"
251 depends on !STANDALONE
254 Thist option is to load a custom ACPI DSDT
255 If you don't know what that is, say N.
257 config ACPI_CUSTOM_DSDT_FILE
258 string "Custom DSDT Table file to include"
259 depends on ACPI_CUSTOM_DSDT
262 Enter the full path name to the file wich includes the AmlCode declaration.
264 config ACPI_BLACKLIST_YEAR
265 int "Disable ACPI for systems before Jan 1st this year"
266 depends on ACPI_INTERPRETER
269 enter a 4-digit year, eg. 2001 to disable ACPI by default
270 on platforms with DMI BIOS date before January 1st that year.
271 "acpi=force" can be used to override this mechanism.
273 Enter 0 to disable this mechanism and allow ACPI to
274 run by default no matter what the year. (default)
277 bool "Debug Statements"
280 The ACPI driver can optionally report errors with a great deal
281 of verbosity. Saying Y enables these statements. This will increase
282 your kernel size by around 50K.
293 This driver is required on some systems for the proper operation of
294 the battery and thermal drivers. If you are compiling for a
295 mobile system, say Y.
309 This driver will enable your system to shut down using ACPI, and
310 dump your ACPI DSDT table using /proc/acpi/dsdt.
312 endif # ACPI_INTERPRETER
315 bool "Power Management Timer Support"
317 depends on ACPI_BOOT && EXPERIMENTAL
321 The Power Management Timer is available on all ACPI-capable,
322 in most cases even if ACPI is unusable or blacklisted.
324 This timing source is not affected by powermanagement features
325 like aggressive processor idling, throttling, frequency and/or
326 voltage scaling, unlike the commonly used Time Stamp Counter
329 So, if you see messages like 'Losing too many ticks!' in the
330 kernel logs, and/or you are using this on a notebook which
331 does not yet have an HPET, you should say "Y" here.
333 config ACPI_CONTAINER
334 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
335 depends on EXPERIMENTAL
336 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
338 This allows _physical_ insertion and removal of CPUs and memory.
339 This can be useful, for example, on NUMA machines that support
340 ACPI based physical hotplug of nodes, or non-NUMA machines that
341 support physical cpu/memory hot-plug.
343 If one selects "m", this driver can be loaded with
344 "modprobe acpi_container".
346 config ACPI_HOTPLUG_MEMORY
347 tristate "Memory Hotplug"
349 depends on MEMORY_HOTPLUG
352 This driver adds supports for ACPI Memory Hotplug. This driver
353 provides support for fielding notifications on ACPI memory
354 devices (PNP0C80) which represent memory ranges that may be
355 onlined or offlined during runtime.
357 Enabling this driver assumes that your platform hardware
358 and firmware have support for hot-plugging physical memory. If
359 your system does not support physically adding or ripping out
360 memory DIMMs at some platfrom defined granularity (individually
361 or as a bank) at runtime, then you need not enable this driver.
363 If one selects "m," this driver can be loaded using the following
365 $>modprobe acpi_memhotplug