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>
48 depends on X86 && (!SMP || SUSPEND_SMP)
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. If you have a system that can
87 switch between A/C and battery, say Y.
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 handles events on the power, sleep and lid buttons.
103 A daemon reads /proc/acpi/event and perform user-defined actions
104 such as shutting down the system. This is necessary for
105 software controlled poweroff.
112 This driver implement the ACPI Extensions For Display Adapters
113 for integrated graphics devices on motherboard, as specified in
114 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
115 control like defining the video POST device, retrieving EDID information
116 or to setup a video output, etc.
117 Note that this is an ref. implementation only. It may or may not work
118 for your integrated video device.
121 tristate "Generic Hotkey (EXPERIMENTAL)"
122 depends on EXPERIMENTAL
126 Experimental consolidated hotkey driver.
127 If you are unsure, say N.
133 This driver adds support for ACPI fan devices, allowing user-mode
134 applications to perform basic fan control (on, off, status).
136 config ACPI_PROCESSOR
140 This driver installs ACPI as the idle handler for Linux, and uses
141 ACPI C2 and C3 processor states to save power, on systems that
142 support it. It is required by several flavors of cpufreq
143 Performance-state drivers.
145 config ACPI_HOTPLUG_CPU
147 depends on ACPI_PROCESSOR && HOTPLUG_CPU
148 select ACPI_CONTAINER
152 tristate "Thermal Zone"
153 depends on ACPI_PROCESSOR
156 This driver adds support for ACPI thermal zones. Most mobile and
157 some desktop systems support ACPI thermal zones. It is HIGHLY
158 recommended that this option be enabled, as your processor(s)
159 may be damaged without it.
164 depends on (IA64 || X86_64)
165 default y if IA64_GENERIC || IA64_SGI_SN2
168 tristate "ASUS/Medion Laptop Extras"
172 This driver provides support for extra features of ACPI-compatible
173 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
174 support some Medion laptops (such as 9675 for example). It makes all
175 the extra buttons generate standard ACPI events that go through
176 /proc/acpi/events, and (on some models) adds support for changing the
177 display brightness and output, switching the LCD backlight on and off,
178 and most importantly, allows you to blink those fancy LEDs intended
179 for reporting mail and wireless status.
181 Note: display switching code is currently considered EXPERIMENTAL,
182 toying with these values may even lock your machine.
184 All settings are changed via /proc/acpi/asus directory entries. Owner
185 and group for these entries can be set with asus_uid and asus_gid
188 More information and a userspace daemon for handling the extra buttons
189 at <http://sourceforge.net/projects/acpi4asus/>.
191 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
192 driver is still under development, so if your laptop is unsupported or
193 something works not quite as expected, please use the mailing list
194 available on the above page (acpi4asus-user@lists.sourceforge.net)
197 tristate "IBM ThinkPad Laptop Extras"
201 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
202 support for Fn-Fx key combinations, Bluetooth control, video
203 output switching, ThinkLight control, UltraBay eject and more.
204 For more information about this driver see <file:Documentation/ibm-acpi.txt>
205 and <http://ibm-acpi.sf.net/> .
207 If you have an IBM ThinkPad laptop, say Y or M here.
210 tristate "Toshiba Laptop Extras"
214 This driver adds support for access to certain system settings
215 on "legacy free" Toshiba laptops. These laptops can be recognized by
216 their lack of a BIOS setup menu and APM support.
218 On these machines, all system configuration is handled through the
219 ACPI. This driver is required for access to controls not covered
220 by the general ACPI drivers, such as LCD brightness, video output,
223 This driver differs from the non-ACPI Toshiba laptop driver (located
224 under "Processor type and features") in several aspects.
225 Configuration is accessed by reading and writing text files in the
226 /proc tree instead of by program interface to /dev. Furthermore, no
227 power management functions are exposed, as those are handled by the
228 general ACPI drivers.
230 More information about this driver is available at
231 <http://memebeam.org/toys/ToshibaAcpiDriver>.
233 If you have a legacy free Toshiba laptop (such as the Libretto L1
236 config ACPI_CUSTOM_DSDT
237 bool "Include Custom DSDT"
238 depends on !STANDALONE
241 Thist option is to load a custom ACPI DSDT
242 If you don't know what that is, say N.
244 config ACPI_CUSTOM_DSDT_FILE
245 string "Custom DSDT Table file to include"
246 depends on ACPI_CUSTOM_DSDT
249 Enter the full path name to the file wich includes the AmlCode declaration.
251 config ACPI_BLACKLIST_YEAR
252 int "Disable ACPI for systems before Jan 1st this year"
256 enter a 4-digit year, eg. 2001 to disable ACPI by default
257 on platforms with DMI BIOS date before January 1st that year.
258 "acpi=force" can be used to override this mechanism.
260 Enter 0 to disable this mechanism and allow ACPI to
261 run by default no matter what the year. (default)
264 bool "Debug Statements"
267 The ACPI driver can optionally report errors with a great deal
268 of verbosity. Saying Y enables these statements. This will increase
269 your kernel size by around 50K.
276 This driver is required on some systems for the proper operation of
277 the battery and thermal drivers. If you are compiling for a
278 mobile system, say Y.
292 This driver will enable your system to shut down using ACPI, and
293 dump your ACPI DSDT table using /proc/acpi/dsdt.
296 bool "Power Management Timer Support"
301 The Power Management Timer is available on all ACPI-capable,
302 in most cases even if ACPI is unusable or blacklisted.
304 This timing source is not affected by powermanagement features
305 like aggressive processor idling, throttling, frequency and/or
306 voltage scaling, unlike the commonly used Time Stamp Counter
309 So, if you see messages like 'Losing too many ticks!' in the
310 kernel logs, and/or you are using this on a notebook which
311 does not yet have an HPET, you should say "Y" here.
313 config ACPI_CONTAINER
314 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
315 depends on EXPERIMENTAL
316 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
318 This allows _physical_ insertion and removal of CPUs and memory.
319 This can be useful, for example, on NUMA machines that support
320 ACPI based physical hotplug of nodes, or non-NUMA machines that
321 support physical cpu/memory hot-plug.
323 If one selects "m", this driver can be loaded with
324 "modprobe acpi_container".
326 config ACPI_HOTPLUG_MEMORY
327 tristate "Memory Hotplug"
329 depends on MEMORY_HOTPLUG
332 This driver adds supports for ACPI Memory Hotplug. This driver
333 provides support for fielding notifications on ACPI memory
334 devices (PNP0C80) which represent memory ranges that may be
335 onlined or offlined during runtime.
337 Enabling this driver assumes that your platform hardware
338 and firmware have support for hot-plugging physical memory. If
339 your system does not support physically adding or ripping out
340 memory DIMMs at some platfrom defined granularity (individually
341 or as a bank) at runtime, then you need not enable this driver.
343 If one selects "m," this driver can be loaded using the following
345 $>modprobe acpi_memhotplug