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
144 This driver adds support for ACPI fan devices, allowing user-mode
145 applications to perform basic fan control (on, off, status).
147 config ACPI_PROCESSOR
151 This driver installs ACPI as the idle handler for Linux, and uses
152 ACPI C2 and C3 processor states to save power, on systems that
155 config ACPI_HOTPLUG_CPU
156 bool "Processor Hotplug (EXPERIMENTAL)"
157 depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
158 select ACPI_CONTAINER
161 Select this option if your platform support physical CPU hotplug.
164 tristate "Thermal Zone"
165 depends on ACPI_PROCESSOR
168 This driver adds support for ACPI thermal zones. Most mobile and
169 some desktop systems support ACPI thermal zones. It is HIGHLY
170 recommended that this option be enabled, as your processor(s)
171 may be damaged without it.
176 depends on (IA64 || X86_64)
177 default y if IA64_GENERIC || IA64_SGI_SN2
180 tristate "ASUS/Medion Laptop Extras"
184 This driver provides support for extra features of ACPI-compatible
185 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
186 support some Medion laptops (such as 9675 for example). It makes all
187 the extra buttons generate standard ACPI events that go through
188 /proc/acpi/events, and (on some models) adds support for changing the
189 display brightness and output, switching the LCD backlight on and off,
190 and most importantly, allows you to blink those fancy LEDs intended
191 for reporting mail and wireless status.
193 Note: display switching code is currently considered EXPERIMENTAL,
194 toying with these values may even lock your machine.
196 All settings are changed via /proc/acpi/asus directory entries. Owner
197 and group for these entries can be set with asus_uid and asus_gid
200 More information and a userspace daemon for handling the extra buttons
201 at <http://sourceforge.net/projects/acpi4asus/>.
203 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
204 driver is still under development, so if your laptop is unsupported or
205 something works not quite as expected, please use the mailing list
206 available on the above page (acpi4asus-user@lists.sourceforge.net)
209 tristate "IBM ThinkPad Laptop Extras"
213 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
214 support for Fn-Fx key combinations, Bluetooth control, video
215 output switching, ThinkLight control, UltraBay eject and more.
216 For more information about this driver see <file:Documentation/ibm-acpi.txt>
217 and <http://ibm-acpi.sf.net/> .
219 If you have an IBM ThinkPad laptop, say Y or M here.
222 tristate "Toshiba Laptop Extras"
226 This driver adds support for access to certain system settings
227 on "legacy free" Toshiba laptops. These laptops can be recognized by
228 their lack of a BIOS setup menu and APM support.
230 On these machines, all system configuration is handled through the
231 ACPI. This driver is required for access to controls not covered
232 by the general ACPI drivers, such as LCD brightness, video output,
235 This driver differs from the non-ACPI Toshiba laptop driver (located
236 under "Processor type and features") in several aspects.
237 Configuration is accessed by reading and writing text files in the
238 /proc tree instead of by program interface to /dev. Furthermore, no
239 power management functions are exposed, as those are handled by the
240 general ACPI drivers.
242 More information about this driver is available at
243 <http://memebeam.org/toys/ToshibaAcpiDriver>.
245 If you have a legacy free Toshiba laptop (such as the Libretto L1
248 config ACPI_CUSTOM_DSDT
249 bool "Include Custom DSDT"
250 depends on !STANDALONE
253 Thist option is to load a custom ACPI DSDT
254 If you don't know what that is, say N.
256 config ACPI_CUSTOM_DSDT_FILE
257 string "Custom DSDT Table file to include"
258 depends on ACPI_CUSTOM_DSDT
261 Enter the full path name to the file wich includes the AmlCode declaration.
263 config ACPI_BLACKLIST_YEAR
264 int "Disable ACPI for systems before Jan 1st this year"
265 depends on ACPI_INTERPRETER
268 enter a 4-digit year, eg. 2001 to disable ACPI by default
269 on platforms with DMI BIOS date before January 1st that year.
270 "acpi=force" can be used to override this mechanism.
272 Enter 0 to disable this mechanism and allow ACPI to
273 run by default no matter what the year. (default)
276 bool "Debug Statements"
279 The ACPI driver can optionally report errors with a great deal
280 of verbosity. Saying Y enables these statements. This will increase
281 your kernel size by around 50K.
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.
308 This driver will enable your system to shut down using ACPI, and
309 dump your ACPI DSDT table using /proc/acpi/dsdt.
311 endif # ACPI_INTERPRETER
314 bool "Power Management Timer Support"
316 depends on ACPI_BOOT && EXPERIMENTAL
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 powermanagement features
324 like aggressive processor idling, throttling, frequency and/or
325 voltage scaling, unlike the commonly used Time Stamp Counter
328 So, if you see messages like 'Losing too many ticks!' in the
329 kernel logs, and/or you are using this on a notebook which
330 does not yet have an HPET, you should say "Y" here.
332 config ACPI_CONTAINER
333 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
334 depends on EXPERIMENTAL
335 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
337 This allows _physical_ insertion and removal of CPUs and memory.
338 This can be useful, for example, on NUMA machines that support
339 ACPI based physical hotplug of nodes, or non-NUMA machines that
340 support physical cpu/memory hot-plug.
342 If one selects "m", this driver can be loaded with
343 "modprobe acpi_container".
345 config ACPI_HOTPLUG_MEMORY
346 tristate "Memory Hotplug"
348 depends on MEMORY_HOTPLUG
351 This driver adds supports for ACPI Memory Hotplug. This driver
352 provides support for fielding notifications on ACPI memory
353 devices (PNP0C80) which represent memory ranges that may be
354 onlined or offlined during runtime.
356 Enabling this driver assumes that your platform hardware
357 and firmware have support for hot-plugging physical memory. If
358 your system does not support physically adding or ripping out
359 memory DIMMs at some platfrom defined granularity (individually
360 or as a bank) at runtime, then you need not enable this driver.
362 If one selects "m," this driver can be loaded using the following
364 $>modprobe acpi_memhotplug