5 menu "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
12 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.
111 This driver implement the ACPI Extensions For Display Adapters
112 for integrated graphics devices on motherboard, as specified in
113 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
114 control like defining the video POST device, retrieving EDID information
115 or to setup a video output, etc.
116 Note that this is an ref. implementation only. It may or may not work
117 for your integrated video device.
120 tristate "Generic Hotkey (EXPERIMENTAL)"
121 depends on EXPERIMENTAL
125 Experimental consolidated hotkey driver.
126 If you are unsure, say N.
132 This driver adds support for ACPI fan devices, allowing user-mode
133 applications to perform basic fan control (on, off, status).
135 config ACPI_PROCESSOR
139 This driver installs ACPI as the idle handler for Linux, and uses
140 ACPI C2 and C3 processor states to save power, on systems that
141 support it. It is required by several flavors of cpufreq
142 Performance-state drivers.
144 config ACPI_HOTPLUG_CPU
146 depends on ACPI_PROCESSOR && HOTPLUG_CPU
147 select ACPI_CONTAINER
151 tristate "Thermal Zone"
152 depends on ACPI_PROCESSOR
155 This driver adds support for ACPI thermal zones. Most mobile and
156 some desktop systems support ACPI thermal zones. It is HIGHLY
157 recommended that this option be enabled, as your processor(s)
158 may be damaged without it.
163 depends on (X86 || IA64)
164 default y if IA64_GENERIC || IA64_SGI_SN2
167 tristate "ASUS/Medion Laptop Extras"
170 This driver provides support for extra features of ACPI-compatible
171 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
172 support some Medion laptops (such as 9675 for example). It makes all
173 the extra buttons generate standard ACPI events that go through
174 /proc/acpi/events, and (on some models) adds support for changing the
175 display brightness and output, switching the LCD backlight on and off,
176 and most importantly, allows you to blink those fancy LEDs intended
177 for reporting mail and wireless status.
179 Note: display switching code is currently considered EXPERIMENTAL,
180 toying with these values may even lock your machine.
182 All settings are changed via /proc/acpi/asus directory entries. Owner
183 and group for these entries can be set with asus_uid and asus_gid
186 More information and a userspace daemon for handling the extra buttons
187 at <http://sourceforge.net/projects/acpi4asus/>.
189 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
190 driver is still under development, so if your laptop is unsupported or
191 something works not quite as expected, please use the mailing list
192 available on the above page (acpi4asus-user@lists.sourceforge.net)
195 tristate "IBM ThinkPad Laptop Extras"
198 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
199 support for Fn-Fx key combinations, Bluetooth control, video
200 output switching, ThinkLight control, UltraBay eject and more.
201 For more information about this driver see <file:Documentation/ibm-acpi.txt>
202 and <http://ibm-acpi.sf.net/> .
204 If you have an IBM ThinkPad laptop, say Y or M here.
207 bool "Legacy Docking Station Support"
211 Allows the ibm_acpi driver to handle docking station events.
212 This support is obsoleted by CONFIG_HOTPLUG_PCI_ACPI. It will
213 allow locking and removing the laptop from the docking station,
214 but will not properly connect PCI devices.
216 If you are not sure, say N here.
219 tristate "Toshiba Laptop Extras"
222 This driver adds support for access to certain system settings
223 on "legacy free" Toshiba laptops. These laptops can be recognized by
224 their lack of a BIOS setup menu and APM support.
226 On these machines, all system configuration is handled through the
227 ACPI. This driver is required for access to controls not covered
228 by the general ACPI drivers, such as LCD brightness, video output,
231 This driver differs from the non-ACPI Toshiba laptop driver (located
232 under "Processor type and features") in several aspects.
233 Configuration is accessed by reading and writing text files in the
234 /proc tree instead of by program interface to /dev. Furthermore, no
235 power management functions are exposed, as those are handled by the
236 general ACPI drivers.
238 More information about this driver is available at
239 <http://memebeam.org/toys/ToshibaAcpiDriver>.
241 If you have a legacy free Toshiba laptop (such as the Libretto L1
244 config ACPI_CUSTOM_DSDT
245 bool "Include Custom DSDT"
246 depends on !STANDALONE
249 Thist option is to load a custom ACPI DSDT
250 If you don't know what that is, say N.
252 config ACPI_CUSTOM_DSDT_FILE
253 string "Custom DSDT Table file to include"
254 depends on ACPI_CUSTOM_DSDT
257 Enter the full path name to the file which includes the AmlCode
260 config ACPI_BLACKLIST_YEAR
261 int "Disable ACPI for systems before Jan 1st this year" if X86_32
264 enter a 4-digit year, eg. 2001 to disable ACPI by default
265 on platforms with DMI BIOS date before January 1st that year.
266 "acpi=force" can be used to override this mechanism.
268 Enter 0 to disable this mechanism and allow ACPI to
269 run by default no matter what the year. (default)
272 bool "Debug Statements"
275 The ACPI driver can optionally report errors with a great deal
276 of verbosity. Saying Y enables these statements. This will increase
277 your kernel size by around 50K.
283 This driver is required on some systems for the proper operation of
284 the battery and thermal drivers. If you are compiling for a
285 mobile system, say Y.
295 This driver will enable your system to shut down using ACPI, and
296 dump your ACPI DSDT table using /proc/acpi/dsdt.
299 bool "Power Management Timer Support" if EMBEDDED
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 You should nearly always say Y here because many modern
312 systems require this timer.
314 config ACPI_CONTAINER
315 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
316 depends on EXPERIMENTAL
317 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
319 This allows _physical_ insertion and removal of CPUs and memory.
320 This can be useful, for example, on NUMA machines that support
321 ACPI based physical hotplug of nodes, or non-NUMA machines that
322 support physical cpu/memory hot-plug.
324 If one selects "m", this driver can be loaded with
325 "modprobe acpi_container".
327 config ACPI_HOTPLUG_MEMORY
328 tristate "Memory Hotplug"
330 depends on MEMORY_HOTPLUG
333 This driver adds supports for ACPI Memory Hotplug. This driver
334 provides support for fielding notifications on ACPI memory
335 devices (PNP0C80) which represent memory ranges that may be
336 onlined or offlined during runtime.
338 Enabling this driver assumes that your platform hardware
339 and firmware have support for hot-plugging physical memory. If
340 your system does not support physically adding or ripping out
341 memory DIMMs at some platfrom defined granularity (individually
342 or as a bank) at runtime, then you need not enable this driver.
344 If one selects "m," this driver can be loaded using the following
346 $>modprobe acpi_memhotplug
349 tristate "Smart Battery System (EXPERIMENTAL)"
350 depends on X86 && I2C
351 depends on EXPERIMENTAL
353 This driver adds support for the Smart Battery System.
354 Depends on I2C (Device Drivers ---> I2C support)
355 A "Smart Battery" is quite old and quite rare compared
356 to today's ACPI "Control Method" battery.