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
158 depends on ACPI_PROCESSOR && HOTPLUG_CPU
159 select ACPI_CONTAINER
163 tristate "Thermal Zone"
164 depends on ACPI_PROCESSOR
167 This driver adds support for ACPI thermal zones. Most mobile and
168 some desktop systems support ACPI thermal zones. It is HIGHLY
169 recommended that this option be enabled, as your processor(s)
170 may be damaged without it.
175 depends on (IA64 || X86_64)
176 default y if IA64_GENERIC || IA64_SGI_SN2
179 tristate "ASUS/Medion Laptop Extras"
183 This driver provides support for extra features of ACPI-compatible
184 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
185 support some Medion laptops (such as 9675 for example). It makes all
186 the extra buttons generate standard ACPI events that go through
187 /proc/acpi/events, and (on some models) adds support for changing the
188 display brightness and output, switching the LCD backlight on and off,
189 and most importantly, allows you to blink those fancy LEDs intended
190 for reporting mail and wireless status.
192 Note: display switching code is currently considered EXPERIMENTAL,
193 toying with these values may even lock your machine.
195 All settings are changed via /proc/acpi/asus directory entries. Owner
196 and group for these entries can be set with asus_uid and asus_gid
199 More information and a userspace daemon for handling the extra buttons
200 at <http://sourceforge.net/projects/acpi4asus/>.
202 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
203 driver is still under development, so if your laptop is unsupported or
204 something works not quite as expected, please use the mailing list
205 available on the above page (acpi4asus-user@lists.sourceforge.net)
208 tristate "IBM ThinkPad Laptop Extras"
212 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
213 support for Fn-Fx key combinations, Bluetooth control, video
214 output switching, ThinkLight control, UltraBay eject and more.
215 For more information about this driver see <file:Documentation/ibm-acpi.txt>
216 and <http://ibm-acpi.sf.net/> .
218 If you have an IBM ThinkPad laptop, say Y or M here.
221 tristate "Toshiba Laptop Extras"
225 This driver adds support for access to certain system settings
226 on "legacy free" Toshiba laptops. These laptops can be recognized by
227 their lack of a BIOS setup menu and APM support.
229 On these machines, all system configuration is handled through the
230 ACPI. This driver is required for access to controls not covered
231 by the general ACPI drivers, such as LCD brightness, video output,
234 This driver differs from the non-ACPI Toshiba laptop driver (located
235 under "Processor type and features") in several aspects.
236 Configuration is accessed by reading and writing text files in the
237 /proc tree instead of by program interface to /dev. Furthermore, no
238 power management functions are exposed, as those are handled by the
239 general ACPI drivers.
241 More information about this driver is available at
242 <http://memebeam.org/toys/ToshibaAcpiDriver>.
244 If you have a legacy free Toshiba laptop (such as the Libretto L1
247 config ACPI_CUSTOM_DSDT
248 bool "Include Custom DSDT"
249 depends on !STANDALONE
252 Thist option is to load a custom ACPI DSDT
253 If you don't know what that is, say N.
255 config ACPI_CUSTOM_DSDT_FILE
256 string "Custom DSDT Table file to include"
257 depends on ACPI_CUSTOM_DSDT
260 Enter the full path name to the file wich includes the AmlCode declaration.
262 config ACPI_BLACKLIST_YEAR
263 int "Disable ACPI for systems before Jan 1st this year"
264 depends on ACPI_INTERPRETER
267 enter a 4-digit year, eg. 2001 to disable ACPI by default
268 on platforms with DMI BIOS date before January 1st that year.
269 "acpi=force" can be used to override this mechanism.
271 Enter 0 to disable this mechanism and allow ACPI to
272 run by default no matter what the year. (default)
275 bool "Debug Statements"
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.
291 This driver is required on some systems for the proper operation of
292 the battery and thermal drivers. If you are compiling for a
293 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.
310 endif # ACPI_INTERPRETER
313 bool "Power Management Timer Support"
315 depends on ACPI_BOOT && EXPERIMENTAL
319 The Power Management Timer is available on all ACPI-capable,
320 in most cases even if ACPI is unusable or blacklisted.
322 This timing source is not affected by powermanagement features
323 like aggressive processor idling, throttling, frequency and/or
324 voltage scaling, unlike the commonly used Time Stamp Counter
327 So, if you see messages like 'Losing too many ticks!' in the
328 kernel logs, and/or you are using this on a notebook which
329 does not yet have an HPET, you should say "Y" here.
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 platfrom 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