5 menu "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
12 depends on IA64 || X86
18 Advanced Configuration and Power Interface (ACPI) support for
19 Linux requires an ACPI compliant platform (hardware/firmware),
20 and assumes the presence of OS-directed configuration and power
21 management (OSPM) software. This option will enlarge your
24 Linux ACPI provides a robust functional replacement for several
25 legacy configuration and power management interfaces, including
26 the Plug-and-Play BIOS specification (PnP BIOS), the
27 MultiProcessor Specification (MPS), and the Advanced Power
28 Management (APM) specification. If both ACPI and APM support
29 are configured, whichever is loaded first shall be used.
31 The ACPI SourceForge project contains the latest source code,
32 documentation, tools, mailing list subscription, and other
33 information. This project is available at:
34 <http://sourceforge.net/projects/acpi>
36 Linux support for ACPI is based on Intel Corporation's ACPI
37 Component Architecture (ACPI CA). For more information see:
38 <http://developer.intel.com/technology/iapc/acpi>
40 ACPI is an open industry specification co-developed by Compaq,
41 Intel, Microsoft, Phoenix, and Toshiba. The specification is
43 <http://www.acpi.info>
49 depends on X86 && (!SMP || SUSPEND_SMP)
53 This option adds support for ACPI suspend states.
55 With this option, you will be able to put the system "to sleep".
56 Sleep states are low power states for the system and devices. All
57 of the system operating state is saved to either memory or disk
58 (depending on the state), to allow the system to resume operation
59 quickly at your request.
61 Although this option sounds really nifty, barely any of the device
62 drivers have been converted to the new driver model and hence few
63 have proper power management support.
65 This option is not recommended for anyone except those doing driver
66 power management development.
68 config ACPI_SLEEP_PROC_FS
70 depends on ACPI_SLEEP && PROC_FS
73 config ACPI_SLEEP_PROC_SLEEP
74 bool "/proc/acpi/sleep (deprecated)"
75 depends on ACPI_SLEEP_PROC_FS
78 Create /proc/acpi/sleep
79 Deprecated by /sys/power/state
86 This driver adds support for the AC Adapter object, which indicates
87 whether a system is on AC, or not. If you have a system that can
88 switch between A/C and battery, say Y.
95 This driver adds support for battery information through
96 /proc/acpi/battery. If you have a mobile system with a battery,
103 This driver handles events on the power, sleep and lid buttons.
104 A daemon reads /proc/acpi/event and perform user-defined actions
105 such as shutting down the system. This is necessary for
106 software controlled poweroff.
113 This driver implement the ACPI Extensions For Display Adapters
114 for integrated graphics devices on motherboard, as specified in
115 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
116 control like defining the video POST device, retrieving EDID information
117 or to setup a video output, etc.
118 Note that this is an ref. implementation only. It may or may not work
119 for your integrated video device.
122 tristate "Generic Hotkey (EXPERIMENTAL)"
123 depends on EXPERIMENTAL
127 Experimental consolidated hotkey driver.
128 If you are unsure, say N.
134 This driver adds support for ACPI fan devices, allowing user-mode
135 applications to perform basic fan control (on, off, status).
137 config ACPI_PROCESSOR
141 This driver installs ACPI as the idle handler for Linux, and uses
142 ACPI C2 and C3 processor states to save power, on systems that
143 support it. It is required by several flavors of cpufreq
144 Performance-state drivers.
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.
289 This driver will enable your system to shut down using ACPI, and
290 dump your ACPI DSDT table using /proc/acpi/dsdt.
293 bool "Power Management Timer Support"
298 The Power Management Timer is available on all ACPI-capable,
299 in most cases even if ACPI is unusable or blacklisted.
301 This timing source is not affected by powermanagement features
302 like aggressive processor idling, throttling, frequency and/or
303 voltage scaling, unlike the commonly used Time Stamp Counter
306 So, if you see messages like 'Losing too many ticks!' in the
307 kernel logs, and/or you are using this on a notebook which
308 does not yet have an HPET, you should say "Y" here.
310 config ACPI_CONTAINER
311 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
312 depends on EXPERIMENTAL
313 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
315 This allows _physical_ insertion and removal of CPUs and memory.
316 This can be useful, for example, on NUMA machines that support
317 ACPI based physical hotplug of nodes, or non-NUMA machines that
318 support physical cpu/memory hot-plug.
320 If one selects "m", this driver can be loaded with
321 "modprobe acpi_container".
323 config ACPI_HOTPLUG_MEMORY
324 tristate "Memory Hotplug"
326 depends on MEMORY_HOTPLUG
329 This driver adds supports for ACPI Memory Hotplug. This driver
330 provides support for fielding notifications on ACPI memory
331 devices (PNP0C80) which represent memory ranges that may be
332 onlined or offlined during runtime.
334 Enabling this driver assumes that your platform hardware
335 and firmware have support for hot-plugging physical memory. If
336 your system does not support physically adding or ripping out
337 memory DIMMs at some platfrom defined granularity (individually
338 or as a bank) at runtime, then you need not enable this driver.
340 If one selects "m," this driver can be loaded using the following
342 $>modprobe acpi_memhotplug