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>
46 config ACPI_INTERPRETER
53 bool "Sleep States (EXPERIMENTAL)"
54 depends on X86 && (!SMP || SUSPEND_SMP)
55 depends on EXPERIMENTAL && PM
58 This option adds support for ACPI suspend states.
60 With this option, you will be able to put the system "to sleep".
61 Sleep states are low power states for the system and devices. All
62 of the system operating state is saved to either memory or disk
63 (depending on the state), to allow the system to resume operation
64 quickly at your request.
66 Although this option sounds really nifty, barely any of the device
67 drivers have been converted to the new driver model and hence few
68 have proper power management support.
70 This option is not recommended for anyone except those doing driver
71 power management development.
73 config ACPI_SLEEP_PROC_FS
75 depends on ACPI_SLEEP && PROC_FS
78 config ACPI_SLEEP_PROC_SLEEP
79 bool "/proc/acpi/sleep (deprecated)"
80 depends on ACPI_SLEEP_PROC_FS
83 Create /proc/acpi/sleep
84 Deprecated by /sys/power/state
91 This driver adds support for the AC Adapter object, which indicates
92 whether a system is on AC, or not. Typically, only mobile systems
93 have this object, since desktops are always on AC.
100 This driver adds support for battery information through
101 /proc/acpi/battery. If you have a mobile system with a battery,
108 This driver registers for events based on buttons, such as the
109 power, sleep, and lid switch. In the future, a daemon will read
110 /proc/acpi/event and perform user-defined actions such as shutting
111 down the system. Until then, you can cat it, and see output when
116 depends on EXPERIMENTAL
119 This driver implement the ACPI Extensions For Display Adapters
120 for integrated graphics devices on motherboard, as specified in
121 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
122 control like defining the video POST device, retrieving EDID information
123 or to setup a video output, etc.
124 Note that this is an ref. implementation only. It may or may not work
125 for your integrated video device.
128 tristate "Generic Hotkey"
129 depends on ACPI_INTERPRETER
130 depends on EXPERIMENTAL
131 depends on !IA64_SGI_SN
134 Experimental consolidated hotkey driver.
135 If you are unsure, say N.
141 This driver adds support for ACPI fan devices, allowing user-mode
142 applications to perform basic fan control (on, off, status).
144 config ACPI_PROCESSOR
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
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 (IA64 || X86_64)
172 default y if IA64_GENERIC || IA64_SGI_SN2
175 tristate "ASUS/Medion Laptop Extras"
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"
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 tristate "Toshiba Laptop Extras"
221 This driver adds support for access to certain system settings
222 on "legacy free" Toshiba laptops. These laptops can be recognized by
223 their lack of a BIOS setup menu and APM support.
225 On these machines, all system configuration is handled through the
226 ACPI. This driver is required for access to controls not covered
227 by the general ACPI drivers, such as LCD brightness, video output,
230 This driver differs from the non-ACPI Toshiba laptop driver (located
231 under "Processor type and features") in several aspects.
232 Configuration is accessed by reading and writing text files in the
233 /proc tree instead of by program interface to /dev. Furthermore, no
234 power management functions are exposed, as those are handled by the
235 general ACPI drivers.
237 More information about this driver is available at
238 <http://memebeam.org/toys/ToshibaAcpiDriver>.
240 If you have a legacy free Toshiba laptop (such as the Libretto L1
243 config ACPI_CUSTOM_DSDT
244 bool "Include Custom DSDT"
245 depends on !STANDALONE
248 Thist option is to load a custom ACPI DSDT
249 If you don't know what that is, say N.
251 config ACPI_CUSTOM_DSDT_FILE
252 string "Custom DSDT Table file to include"
253 depends on ACPI_CUSTOM_DSDT
256 Enter the full path name to the file wich includes the AmlCode declaration.
258 config ACPI_BLACKLIST_YEAR
259 int "Disable ACPI for systems before Jan 1st this year"
260 depends on ACPI_INTERPRETER
263 enter a 4-digit year, eg. 2001 to disable ACPI by default
264 on platforms with DMI BIOS date before January 1st that year.
265 "acpi=force" can be used to override this mechanism.
267 Enter 0 to disable this mechanism and allow ACPI to
268 run by default no matter what the year. (default)
271 bool "Debug Statements"
274 The ACPI driver can optionally report errors with a great deal
275 of verbosity. Saying Y enables these statements. This will increase
276 your kernel size by around 50K.
287 This driver is required on some systems for the proper operation of
288 the battery and thermal drivers. If you are compiling for a
289 mobile system, say Y.
303 This driver will enable your system to shut down using ACPI, and
304 dump your ACPI DSDT table using /proc/acpi/dsdt.
306 endif # ACPI_INTERPRETER
309 bool "Power Management Timer Support"
311 depends on EXPERIMENTAL
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 powermanagement features
319 like aggressive processor idling, throttling, frequency and/or
320 voltage scaling, unlike the commonly used Time Stamp Counter
323 So, if you see messages like 'Losing too many ticks!' in the
324 kernel logs, and/or you are using this on a notebook which
325 does not yet have an HPET, you should say "Y" here.
327 config ACPI_CONTAINER
328 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
329 depends on EXPERIMENTAL
330 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
332 This allows _physical_ insertion and removal of CPUs and memory.
333 This can be useful, for example, on NUMA machines that support
334 ACPI based physical hotplug of nodes, or non-NUMA machines that
335 support physical cpu/memory hot-plug.
337 If one selects "m", this driver can be loaded with
338 "modprobe acpi_container".
340 config ACPI_HOTPLUG_MEMORY
341 tristate "Memory Hotplug"
343 depends on MEMORY_HOTPLUG
346 This driver adds supports for ACPI Memory Hotplug. This driver
347 provides support for fielding notifications on ACPI memory
348 devices (PNP0C80) which represent memory ranges that may be
349 onlined or offlined during runtime.
351 Enabling this driver assumes that your platform hardware
352 and firmware have support for hot-plugging physical memory. If
353 your system does not support physically adding or ripping out
354 memory DIMMs at some platfrom defined granularity (individually
355 or as a bank) at runtime, then you need not enable this driver.
357 If one selects "m," this driver can be loaded using the following
359 $>modprobe acpi_memhotplug