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
52 depends on !IA64_SGI_SN
58 bool "Sleep States (EXPERIMENTAL)"
60 depends on EXPERIMENTAL
63 This option adds support for ACPI suspend states.
65 With this option, you will be able to put the system "to sleep".
66 Sleep states are low power states for the system and devices. All
67 of the system operating state is saved to either memory or disk
68 (depending on the state), to allow the system to resume operation
69 quickly at your request.
71 Although this option sounds really nifty, barely any of the device
72 drivers have been converted to the new driver model and hence few
73 have proper power management support.
75 This option is not recommended for anyone except those doing driver
76 power management development.
78 config ACPI_SLEEP_PROC_FS
80 depends on ACPI_SLEEP && PROC_FS
83 config ACPI_SLEEP_PROC_SLEEP
84 bool "/proc/acpi/sleep (deprecated)"
85 depends on ACPI_SLEEP_PROC_FS
88 Create /proc/acpi/sleep
89 Deprecated by /sys/power/state
96 This driver adds support for the AC Adapter object, which indicates
97 whether a system is on AC, or not. Typically, only mobile systems
98 have this object, since desktops are always on AC.
105 This driver adds support for battery information through
106 /proc/acpi/battery. If you have a mobile system with a battery,
111 depends on !IA64_SGI_SN
114 This driver registers for events based on buttons, such as the
115 power, sleep, and lid switch. In the future, a daemon will read
116 /proc/acpi/event and perform user-defined actions such as shutting
117 down the system. Until then, you can cat it, and see output when
122 depends on EXPERIMENTAL
123 depends on !IA64_SGI_SN
126 This driver implement the ACPI Extensions For Display Adapters
127 for integrated graphics devices on motherboard, as specified in
128 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
129 control like defining the video POST device, retrieving EDID information
130 or to setup a video output, etc.
131 Note that this is an ref. implementation only. It may or may not work
132 for your integrated video device.
135 tristate "Generic Hotkey"
136 depends on ACPI_INTERPRETER
137 depends on EXPERIMENTAL
138 depends on !IA64_SGI_SN
145 depends on !IA64_SGI_SN
148 This driver adds support for ACPI fan devices, allowing user-mode
149 applications to perform basic fan control (on, off, status).
151 config ACPI_PROCESSOR
153 depends on !IA64_SGI_SN
156 This driver installs ACPI as the idle handler for Linux, and uses
157 ACPI C2 and C3 processor states to save power, on systems that
160 config ACPI_HOTPLUG_CPU
161 bool "Processor Hotplug (EXPERIMENTAL)"
162 depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
163 depends on !IA64_SGI_SN
164 select ACPI_CONTAINER
167 Select this option if your platform support physical CPU hotplug.
170 tristate "Thermal Zone"
171 depends on ACPI_PROCESSOR
174 This driver adds support for ACPI thermal zones. Most mobile and
175 some desktop systems support ACPI thermal zones. It is HIGHLY
176 recommended that this option be enabled, as your processor(s)
177 may be damaged without it.
182 depends on (IA64 || X86_64)
183 default y if IA64_GENERIC || IA64_SGI_SN2
186 tristate "ASUS/Medion Laptop Extras"
190 This driver provides support for extra features of ACPI-compatible
191 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
192 support some Medion laptops (such as 9675 for example). It makes all
193 the extra buttons generate standard ACPI events that go through
194 /proc/acpi/events, and (on some models) adds support for changing the
195 display brightness and output, switching the LCD backlight on and off,
196 and most importantly, allows you to blink those fancy LEDs intended
197 for reporting mail and wireless status.
199 Note: display switching code is currently considered EXPERIMENTAL,
200 toying with these values may even lock your machine.
202 All settings are changed via /proc/acpi/asus directory entries. Owner
203 and group for these entries can be set with asus_uid and asus_gid
206 More information and a userspace daemon for handling the extra buttons
207 at <http://sourceforge.net/projects/acpi4asus/>.
209 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
210 driver is still under development, so if your laptop is unsupported or
211 something works not quite as expected, please use the mailing list
212 available on the above page (acpi4asus-user@lists.sourceforge.net)
215 tristate "IBM ThinkPad Laptop Extras"
219 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
220 support for Fn-Fx key combinations, Bluetooth control, video
221 output switching, ThinkLight control, UltraBay eject and more.
222 For more information about this driver see <file:Documentation/ibm-acpi.txt>
223 and <http://ibm-acpi.sf.net/> .
225 If you have an IBM ThinkPad laptop, say Y or M here.
228 tristate "Toshiba Laptop Extras"
232 This driver adds support for access to certain system settings
233 on "legacy free" Toshiba laptops. These laptops can be recognized by
234 their lack of a BIOS setup menu and APM support.
236 On these machines, all system configuration is handled through the
237 ACPI. This driver is required for access to controls not covered
238 by the general ACPI drivers, such as LCD brightness, video output,
241 This driver differs from the non-ACPI Toshiba laptop driver (located
242 under "Processor type and features") in several aspects.
243 Configuration is accessed by reading and writing text files in the
244 /proc tree instead of by program interface to /dev. Furthermore, no
245 power management functions are exposed, as those are handled by the
246 general ACPI drivers.
248 More information about this driver is available at
249 <http://memebeam.org/toys/ToshibaAcpiDriver>.
251 If you have a legacy free Toshiba laptop (such as the Libretto L1
254 config ACPI_CUSTOM_DSDT
255 bool "Include Custom DSDT"
256 depends on !STANDALONE
259 Thist option is to load a custom ACPI DSDT
260 If you don't know what that is, say N.
262 config ACPI_CUSTOM_DSDT_FILE
263 string "Custom DSDT Table file to include"
264 depends on ACPI_CUSTOM_DSDT
267 Enter the full path name to the file wich includes the AmlCode declaration.
269 config ACPI_BLACKLIST_YEAR
270 int "Disable ACPI for systems before Jan 1st this year"
271 depends on ACPI_INTERPRETER
274 enter a 4-digit year, eg. 2001 to disable ACPI by default
275 on platforms with DMI BIOS date before January 1st that year.
276 "acpi=force" can be used to override this mechanism.
278 Enter 0 to disable this mechanism and allow ACPI to
279 run by default no matter what the year. (default)
282 bool "Debug Statements"
283 depends on !IA64_SGI_SN
286 The ACPI driver can optionally report errors with a great deal
287 of verbosity. Saying Y enables these statements. This will increase
288 your kernel size by around 50K.
292 depends on !IA64_SGI_SN
300 This driver is required on some systems for the proper operation of
301 the battery and thermal drivers. If you are compiling for a
302 mobile system, say Y.
306 depends on !IA64_SGI_SN
311 depends on !IA64_SGI_SN
316 depends on !IA64_SGI_SN
319 This driver will enable your system to shut down using ACPI, and
320 dump your ACPI DSDT table using /proc/acpi/dsdt.
322 endif # ACPI_INTERPRETER
325 bool "Power Management Timer Support"
327 depends on ACPI_BOOT && EXPERIMENTAL
331 The Power Management Timer is available on all ACPI-capable,
332 in most cases even if ACPI is unusable or blacklisted.
334 This timing source is not affected by powermanagement features
335 like aggressive processor idling, throttling, frequency and/or
336 voltage scaling, unlike the commonly used Time Stamp Counter
339 So, if you see messages like 'Losing too many ticks!' in the
340 kernel logs, and/or you are using this on a notebook which
341 does not yet have an HPET, you should say "Y" here.
343 config ACPI_CONTAINER
344 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
345 depends on EXPERIMENTAL
346 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
348 This allows _physical_ insertion and removal of CPUs and memory.
349 This can be useful, for example, on NUMA machines that support
350 ACPI based physical hotplug of nodes, or non-NUMA machines that
351 support physical cpu/memory hot-plug.
353 If one selects "m", this driver can be loaded with
354 "modprobe acpi_container".
356 config ACPI_HOTPLUG_MEMORY
357 tristate "Memory Hotplug"
359 depends on MEMORY_HOTPLUG
362 This driver adds supports for ACPI Memory Hotplug. This driver
363 provides support for fielding notifications on ACPI memory
364 devices (PNP0C80) which represent memory ranges that may be
365 onlined or offlined during runtime.
367 Enabling this driver assumes that your platform hardware
368 and firmware have support for hot-plugging physical memory. If
369 your system does not support physically adding or ripping out
370 memory DIMMs at some platfrom defined granularity (individually
371 or as a bank) at runtime, then you need not enable this driver.
373 If one selects "m," this driver can be loaded using the following
375 $>modprobe acpi_memhotplug