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>
47 bool "Sleep States (EXPERIMENTAL)"
48 depends on X86 && (!SMP || SUSPEND_SMP)
49 depends on EXPERIMENTAL && PM
52 This option adds support for ACPI suspend states.
54 With this option, you will be able to put the system "to sleep".
55 Sleep states are low power states for the system and devices. All
56 of the system operating state is saved to either memory or disk
57 (depending on the state), to allow the system to resume operation
58 quickly at your request.
60 Although this option sounds really nifty, barely any of the device
61 drivers have been converted to the new driver model and hence few
62 have proper power management support.
64 This option is not recommended for anyone except those doing driver
65 power management development.
67 config ACPI_SLEEP_PROC_FS
69 depends on ACPI_SLEEP && PROC_FS
72 config ACPI_SLEEP_PROC_SLEEP
73 bool "/proc/acpi/sleep (deprecated)"
74 depends on ACPI_SLEEP_PROC_FS
77 Create /proc/acpi/sleep
78 Deprecated by /sys/power/state
85 This driver adds support for the AC Adapter object, which indicates
86 whether a system is on AC, or not. Typically, only mobile systems
87 have this object, since desktops are always on AC.
94 This driver adds support for battery information through
95 /proc/acpi/battery. If you have a mobile system with a battery,
102 This driver registers for events based on buttons, such as the
103 power, sleep, and lid switch. In the future, a daemon will read
104 /proc/acpi/event and perform user-defined actions such as shutting
105 down the system. Until then, you can cat it, and see output when
111 depends on EXPERIMENTAL
114 This driver implement the ACPI Extensions For Display Adapters
115 for integrated graphics devices on motherboard, as specified in
116 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
117 control like defining the video POST device, retrieving EDID information
118 or to setup a video output, etc.
119 Note that this is an ref. implementation only. It may or may not work
120 for your integrated video device.
123 tristate "Generic Hotkey"
124 depends on EXPERIMENTAL
128 Experimental consolidated hotkey driver.
129 If you are unsure, say N.
135 This driver adds support for ACPI fan devices, allowing user-mode
136 applications to perform basic fan control (on, off, status).
138 config ACPI_PROCESSOR
142 This driver installs ACPI as the idle handler for Linux, and uses
143 ACPI C2 and C3 processor states to save power, on systems that
146 config ACPI_HOTPLUG_CPU
148 depends on ACPI_PROCESSOR && HOTPLUG_CPU
149 select ACPI_CONTAINER
153 tristate "Thermal Zone"
154 depends on ACPI_PROCESSOR
157 This driver adds support for ACPI thermal zones. Most mobile and
158 some desktop systems support ACPI thermal zones. It is HIGHLY
159 recommended that this option be enabled, as your processor(s)
160 may be damaged without it.
165 depends on (IA64 || X86_64)
166 default y if IA64_GENERIC || IA64_SGI_SN2
169 tristate "ASUS/Medion Laptop Extras"
173 This driver provides support for extra features of ACPI-compatible
174 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
175 support some Medion laptops (such as 9675 for example). It makes all
176 the extra buttons generate standard ACPI events that go through
177 /proc/acpi/events, and (on some models) adds support for changing the
178 display brightness and output, switching the LCD backlight on and off,
179 and most importantly, allows you to blink those fancy LEDs intended
180 for reporting mail and wireless status.
182 Note: display switching code is currently considered EXPERIMENTAL,
183 toying with these values may even lock your machine.
185 All settings are changed via /proc/acpi/asus directory entries. Owner
186 and group for these entries can be set with asus_uid and asus_gid
189 More information and a userspace daemon for handling the extra buttons
190 at <http://sourceforge.net/projects/acpi4asus/>.
192 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
193 driver is still under development, so if your laptop is unsupported or
194 something works not quite as expected, please use the mailing list
195 available on the above page (acpi4asus-user@lists.sourceforge.net)
198 tristate "IBM ThinkPad Laptop Extras"
202 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
203 support for Fn-Fx key combinations, Bluetooth control, video
204 output switching, ThinkLight control, UltraBay eject and more.
205 For more information about this driver see <file:Documentation/ibm-acpi.txt>
206 and <http://ibm-acpi.sf.net/> .
208 If you have an IBM ThinkPad laptop, say Y or M here.
211 tristate "Toshiba Laptop Extras"
215 This driver adds support for access to certain system settings
216 on "legacy free" Toshiba laptops. These laptops can be recognized by
217 their lack of a BIOS setup menu and APM support.
219 On these machines, all system configuration is handled through the
220 ACPI. This driver is required for access to controls not covered
221 by the general ACPI drivers, such as LCD brightness, video output,
224 This driver differs from the non-ACPI Toshiba laptop driver (located
225 under "Processor type and features") in several aspects.
226 Configuration is accessed by reading and writing text files in the
227 /proc tree instead of by program interface to /dev. Furthermore, no
228 power management functions are exposed, as those are handled by the
229 general ACPI drivers.
231 More information about this driver is available at
232 <http://memebeam.org/toys/ToshibaAcpiDriver>.
234 If you have a legacy free Toshiba laptop (such as the Libretto L1
237 config ACPI_CUSTOM_DSDT
238 bool "Include Custom DSDT"
239 depends on !STANDALONE
242 Thist option is to load a custom ACPI DSDT
243 If you don't know what that is, say N.
245 config ACPI_CUSTOM_DSDT_FILE
246 string "Custom DSDT Table file to include"
247 depends on ACPI_CUSTOM_DSDT
250 Enter the full path name to the file wich includes the AmlCode declaration.
252 config ACPI_BLACKLIST_YEAR
253 int "Disable ACPI for systems before Jan 1st this year"
257 enter a 4-digit year, eg. 2001 to disable ACPI by default
258 on platforms with DMI BIOS date before January 1st that year.
259 "acpi=force" can be used to override this mechanism.
261 Enter 0 to disable this mechanism and allow ACPI to
262 run by default no matter what the year. (default)
265 bool "Debug Statements"
268 The ACPI driver can optionally report errors with a great deal
269 of verbosity. Saying Y enables these statements. This will increase
270 your kernel size by around 50K.
277 This driver is required on some systems for the proper operation of
278 the battery and thermal drivers. If you are compiling for a
279 mobile system, say Y.
293 This driver will enable your system to shut down using ACPI, and
294 dump your ACPI DSDT table using /proc/acpi/dsdt.
297 bool "Power Management Timer Support"
299 depends on EXPERIMENTAL
303 The Power Management Timer is available on all ACPI-capable,
304 in most cases even if ACPI is unusable or blacklisted.
306 This timing source is not affected by powermanagement features
307 like aggressive processor idling, throttling, frequency and/or
308 voltage scaling, unlike the commonly used Time Stamp Counter
311 So, if you see messages like 'Losing too many ticks!' in the
312 kernel logs, and/or you are using this on a notebook which
313 does not yet have an HPET, you should say "Y" here.
315 config ACPI_CONTAINER
316 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
317 depends on EXPERIMENTAL
318 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
320 This allows _physical_ insertion and removal of CPUs and memory.
321 This can be useful, for example, on NUMA machines that support
322 ACPI based physical hotplug of nodes, or non-NUMA machines that
323 support physical cpu/memory hot-plug.
325 If one selects "m", this driver can be loaded with
326 "modprobe acpi_container".
328 config ACPI_HOTPLUG_MEMORY
329 tristate "Memory Hotplug"
331 depends on MEMORY_HOTPLUG
334 This driver adds supports for ACPI Memory Hotplug. This driver
335 provides support for fielding notifications on ACPI memory
336 devices (PNP0C80) which represent memory ranges that may be
337 onlined or offlined during runtime.
339 Enabling this driver assumes that your platform hardware
340 and firmware have support for hot-plugging physical memory. If
341 your system does not support physically adding or ripping out
342 memory DIMMs at some platfrom defined granularity (individually
343 or as a bank) at runtime, then you need not enable this driver.
345 If one selects "m," this driver can be loaded using the following
347 $>modprobe acpi_memhotplug