5 menu "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
12 depends on IA64 || X86
16 Advanced Configuration and Power Interface (ACPI) support for
17 Linux requires an ACPI compliant platform (hardware/firmware),
18 and assumes the presence of OS-directed configuration and power
19 management (OSPM) software. This option will enlarge your
22 Linux ACPI provides a robust functional replacement for several
23 legacy configuration and power management interfaces, including
24 the Plug-and-Play BIOS specification (PnP BIOS), the
25 MultiProcessor Specification (MPS), and the Advanced Power
26 Management (APM) specification. If both ACPI and APM support
27 are configured, whichever is loaded first shall be used.
29 The ACPI SourceForge project contains the latest source code,
30 documentation, tools, mailing list subscription, and other
31 information. This project is available at:
32 <http://sourceforge.net/projects/acpi>
34 Linux support for ACPI is based on Intel Corporation's ACPI
35 Component Architecture (ACPI CA). For more information see:
36 <http://developer.intel.com/technology/iapc/acpi>
38 ACPI is an open industry specification co-developed by Compaq,
39 Intel, Microsoft, Phoenix, and Toshiba. The specification is
41 <http://www.acpi.info>
45 depends on ACPI || X86_HT
48 config ACPI_INTERPRETER
51 depends on !IA64_SGI_SN
55 bool "Sleep States (EXPERIMENTAL)"
56 depends on X86 && ACPI
57 depends on ACPI_INTERPRETER
58 depends on EXPERIMENTAL && PM
61 This option adds support for ACPI suspend states.
63 With this option, you will be able to put the system "to sleep".
64 Sleep states are low power states for the system and devices. All
65 of the system operating state is saved to either memory or disk
66 (depending on the state), to allow the system to resume operation
67 quickly at your request.
69 Although this option sounds really nifty, barely any of the device
70 drivers have been converted to the new driver model and hence few
71 have proper power management support.
73 This option is not recommended for anyone except those doing driver
74 power management development.
76 config ACPI_SLEEP_PROC_FS
78 depends on ACPI_SLEEP && PROC_FS
84 depends on ACPI_INTERPRETER
87 This driver adds support for the AC Adapter object, which indicates
88 whether a system is on AC, or not. Typically, only mobile systems
89 have this object, since desktops are always on AC.
94 depends on ACPI_INTERPRETER
97 This driver adds support for battery information through
98 /proc/acpi/battery. If you have a mobile system with a battery,
103 depends on ACPI_INTERPRETER
104 depends on !IA64_SGI_SN
107 This driver registers for events based on buttons, such as the
108 power, sleep, and lid switch. In the future, a daemon will read
109 /proc/acpi/event and perform user-defined actions such as shutting
110 down the system. Until then, you can cat it, and see output when
115 depends on ACPI_INTERPRETER
116 depends on EXPERIMENTAL
117 depends on !IA64_SGI_SN
120 This driver implement the ACPI Extensions For Display Adapters
121 for integrated graphics devices on motherboard, as specified in
122 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
123 control like defining the video POST device, retrieving EDID information
124 or to setup a video output, etc.
125 Note that this is an ref. implementation only. It may or may not work
126 for your integrated video device.
130 depends on ACPI_INTERPRETER
131 depends on !IA64_SGI_SN
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
139 depends on ACPI_INTERPRETER
140 depends on !IA64_SGI_SN
143 This driver installs ACPI as the idle handler for Linux, and uses
144 ACPI C2 and C3 processor states to save power, on systems that
147 config ACPI_HOTPLUG_CPU
148 bool "Processor Hotplug (EXPERIMENTAL)"
149 depends on ACPI_PROCESSOR && HOTPLUG_CPU && EXPERIMENTAL
150 depends on !IA64_SGI_SN
151 select ACPI_CONTAINER
154 Select this option if your platform support physical CPU hotplug.
157 tristate "Thermal Zone"
158 depends on ACPI_PROCESSOR
161 This driver adds support for ACPI thermal zones. Most mobile and
162 some desktop systems support ACPI thermal zones. It is HIGHLY
163 recommended that this option be enabled, as your processor(s)
164 may be damaged without it.
168 depends on ACPI_INTERPRETER
170 depends on (IA64 || X86_64)
171 default y if IA64_GENERIC || IA64_SGI_SN2
174 tristate "ASUS/Medion Laptop Extras"
176 depends on ACPI_INTERPRETER
179 This driver provides support for extra features of ACPI-compatible
180 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
181 support some Medion laptops (such as 9675 for example). It makes all
182 the extra buttons generate standard ACPI events that go through
183 /proc/acpi/events, and (on some models) adds support for changing the
184 display brightness and output, switching the LCD backlight on and off,
185 and most importantly, allows you to blink those fancy LEDs intended
186 for reporting mail and wireless status.
188 Note: display switching code is currently considered EXPERIMENTAL,
189 toying with these values may even lock your machine.
191 All settings are changed via /proc/acpi/asus directory entries. Owner
192 and group for these entries can be set with asus_uid and asus_gid
195 More information and a userspace daemon for handling the extra buttons
196 at <http://sourceforge.net/projects/acpi4asus/>.
198 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
199 driver is still under development, so if your laptop is unsupported or
200 something works not quite as expected, please use the mailing list
201 available on the above page (acpi4asus-user@lists.sourceforge.net)
204 tristate "IBM ThinkPad Laptop Extras"
206 depends on ACPI_INTERPRETER
209 This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
210 support for Fn-Fx key combinations, Bluetooth control, video
211 output switching, ThinkLight control, UltraBay eject and more.
212 For more information about this driver see <file:Documentation/ibm-acpi.txt>
213 and <http://ibm-acpi.sf.net/> .
215 If you have an IBM ThinkPad laptop, say Y or M here.
218 tristate "Toshiba Laptop Extras"
220 depends on ACPI_INTERPRETER
223 This driver adds support for access to certain system settings
224 on "legacy free" Toshiba laptops. These laptops can be recognized by
225 their lack of a BIOS setup menu and APM support.
227 On these machines, all system configuration is handled through the
228 ACPI. This driver is required for access to controls not covered
229 by the general ACPI drivers, such as LCD brightness, video output,
232 This driver differs from the non-ACPI Toshiba laptop driver (located
233 under "Processor type and features") in several aspects.
234 Configuration is accessed by reading and writing text files in the
235 /proc tree instead of by program interface to /dev. Furthermore, no
236 power management functions are exposed, as those are handled by the
237 general ACPI drivers.
239 More information about this driver is available at
240 <http://memebeam.org/toys/ToshibaAcpiDriver>.
242 If you have a legacy free Toshiba laptop (such as the Libretto L1
245 config ACPI_CUSTOM_DSDT
246 bool "Include Custom DSDT"
247 depends on ACPI_INTERPRETER && !STANDALONE
250 Thist option is to load a custom ACPI DSDT
251 If you don't know what that is, say N.
253 config ACPI_CUSTOM_DSDT_FILE
254 string "Custom DSDT Table file to include"
255 depends on ACPI_CUSTOM_DSDT
258 Enter the full path name to the file wich includes the AmlCode declaration.
260 config ACPI_BLACKLIST_YEAR
261 int "Disable ACPI for systems before Jan 1st this year"
262 depends on ACPI_INTERPRETER
265 enter a 4-digit year, eg. 2001 to disable ACPI by default
266 on platforms with DMI BIOS date before January 1st that year.
267 "acpi=force" can be used to override this mechanism.
269 Enter 0 to disable this mechanism and allow ACPI to
270 run by default no matter what the year. (default)
273 bool "Debug Statements"
274 depends on ACPI_INTERPRETER
275 depends on !IA64_SGI_SN
278 The ACPI driver can optionally report errors with a great deal
279 of verbosity. Saying Y enables these statements. This will increase
280 your kernel size by around 50K.
284 depends on ACPI_INTERPRETER
285 depends on !IA64_SGI_SN
291 depends on ACPI_INTERPRETER
294 This driver is required on some systems for the proper operation of
295 the battery and thermal drivers. If you are compiling for a
296 mobile system, say Y.
300 depends on ACPI_INTERPRETER
301 depends on !IA64_SGI_SN
306 depends on ACPI_INTERPRETER
307 depends on !IA64_SGI_SN
312 depends on ACPI_INTERPRETER
313 depends on !IA64_SGI_SN
316 This driver will enable your system to shut down using ACPI, and
317 dump your ACPI DSDT table using /proc/acpi/dsdt.
320 bool "Power Management Timer Support"
321 depends on X86 && ACPI
322 depends on ACPI_BOOT && EXPERIMENTAL
326 The Power Management Timer is available on all ACPI-capable,
327 in most cases even if ACPI is unusable or blacklisted.
329 This timing source is not affected by powermanagement features
330 like aggressive processor idling, throttling, frequency and/or
331 voltage scaling, unlike the commonly used Time Stamp Counter
334 So, if you see messages like 'Losing too many ticks!' in the
335 kernel logs, and/or you are using this on a notebook which
336 does not yet have an HPET, you should say "Y" here.
338 config ACPI_CONTAINER
339 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
340 depends on ACPI && EXPERIMENTAL
341 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
343 This is the ACPI generic container driver which supports
344 ACPI0004, PNP0A05 and PNP0A06 devices