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"
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"
200 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
201 support for Fn-Fx key combinations, Bluetooth control, video
202 output switching, ThinkLight control, UltraBay eject and more.
203 For more information about this driver see <file:Documentation/ibm-acpi.txt>
204 and <http://ibm-acpi.sf.net/> .
206 If you have an IBM ThinkPad laptop, say Y or M here.
209 tristate "Toshiba Laptop Extras"
212 This driver adds support for access to certain system settings
213 on "legacy free" Toshiba laptops. These laptops can be recognized by
214 their lack of a BIOS setup menu and APM support.
216 On these machines, all system configuration is handled through the
217 ACPI. This driver is required for access to controls not covered
218 by the general ACPI drivers, such as LCD brightness, video output,
221 This driver differs from the non-ACPI Toshiba laptop driver (located
222 under "Processor type and features") in several aspects.
223 Configuration is accessed by reading and writing text files in the
224 /proc tree instead of by program interface to /dev. Furthermore, no
225 power management functions are exposed, as those are handled by the
226 general ACPI drivers.
228 More information about this driver is available at
229 <http://memebeam.org/toys/ToshibaAcpiDriver>.
231 If you have a legacy free Toshiba laptop (such as the Libretto L1
234 config ACPI_CUSTOM_DSDT
235 bool "Include Custom DSDT"
236 depends on !STANDALONE
239 Thist option is to load a custom ACPI DSDT
240 If you don't know what that is, say N.
242 config ACPI_CUSTOM_DSDT_FILE
243 string "Custom DSDT Table file to include"
244 depends on ACPI_CUSTOM_DSDT
247 Enter the full path name to the file wich includes the AmlCode declaration.
249 config ACPI_BLACKLIST_YEAR
250 int "Disable ACPI for systems before Jan 1st this year" if X86
253 enter a 4-digit year, eg. 2001 to disable ACPI by default
254 on platforms with DMI BIOS date before January 1st that year.
255 "acpi=force" can be used to override this mechanism.
257 Enter 0 to disable this mechanism and allow ACPI to
258 run by default no matter what the year. (default)
261 bool "Debug Statements"
264 The ACPI driver can optionally report errors with a great deal
265 of verbosity. Saying Y enables these statements. This will increase
266 your kernel size by around 50K.
273 This driver is required on some systems for the proper operation of
274 the battery and thermal drivers. If you are compiling for a
275 mobile system, say Y.
285 This driver will enable your system to shut down using ACPI, and
286 dump your ACPI DSDT table using /proc/acpi/dsdt.
289 bool "Power Management Timer Support"
294 The Power Management Timer is available on all ACPI-capable,
295 in most cases even if ACPI is unusable or blacklisted.
297 This timing source is not affected by powermanagement features
298 like aggressive processor idling, throttling, frequency and/or
299 voltage scaling, unlike the commonly used Time Stamp Counter
302 So, if you see messages like 'Losing too many ticks!' in the
303 kernel logs, and/or you are using this on a notebook which
304 does not yet have an HPET, you should say "Y" here.
306 config ACPI_CONTAINER
307 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
308 depends on EXPERIMENTAL
309 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
311 This allows _physical_ insertion and removal of CPUs and memory.
312 This can be useful, for example, on NUMA machines that support
313 ACPI based physical hotplug of nodes, or non-NUMA machines that
314 support physical cpu/memory hot-plug.
316 If one selects "m", this driver can be loaded with
317 "modprobe acpi_container".
319 config ACPI_HOTPLUG_MEMORY
320 tristate "Memory Hotplug"
322 depends on MEMORY_HOTPLUG
325 This driver adds supports for ACPI Memory Hotplug. This driver
326 provides support for fielding notifications on ACPI memory
327 devices (PNP0C80) which represent memory ranges that may be
328 onlined or offlined during runtime.
330 Enabling this driver assumes that your platform hardware
331 and firmware have support for hot-plugging physical memory. If
332 your system does not support physically adding or ripping out
333 memory DIMMs at some platfrom defined granularity (individually
334 or as a bank) at runtime, then you need not enable this driver.
336 If one selects "m," this driver can be loaded using the following
338 $>modprobe acpi_memhotplug