6 bool "ACPI (Advanced Configuration and Power Interface) Support"
9 depends on !IA64_HP_SIM
10 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>
51 bool "Deprecated /proc/acpi files"
54 For backwards compatibility, this option allows
55 deprecated /proc/acpi/ files to exist, even when
56 they have been replaced by functions in /sys.
57 The deprecated files (and their replacements) include:
59 /proc/acpi/sleep (/sys/power/state)
60 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
61 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
62 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
63 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
64 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
66 This option has no effect on /proc/acpi/ files
67 and functions which do not yet exist in /sys.
69 Say N to delete /proc/acpi/ files that have moved to /sys/
71 config ACPI_PROC_EVENT
72 bool "Deprecated /proc/acpi/event support"
76 A user-space daemon, acpi, typically read /proc/acpi/event
77 and handled all ACPI sub-system generated events.
79 These events are now delivered to user-space via
80 either the input layer, or as netlink events.
82 This build option enables the old code for legacy
83 user-space implementation. After some time, this will
84 be moved under CONFIG_ACPI_PROCFS, and then deleted.
86 Say Y here to retain the old behaviour. Say N if your
87 user-space is newer than kernel 2.6.23 (September 2007).
95 This driver adds support for the AC Adapter object, which indicates
96 whether a system is on AC, or not. If you have a system that can
97 switch between A/C and battery, say Y.
105 This driver adds support for battery information through
106 /proc/acpi/battery. If you have a mobile system with a battery,
114 This driver handles events on the power, sleep and lid buttons.
115 A daemon reads /proc/acpi/event and perform user-defined actions
116 such as shutting down the system. This is necessary for
117 software controlled poweroff.
121 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
124 This driver implement the ACPI Extensions For Display Adapters
125 for integrated graphics devices on motherboard, as specified in
126 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
127 control like defining the video POST device, retrieving EDID information
128 or to setup a video output, etc.
129 Note that this is an ref. implementation only. It may or may not work
130 for your integrated video device.
136 This driver adds support for ACPI fan devices, allowing user-mode
137 applications to perform basic fan control (on, off, status).
141 depends on EXPERIMENTAL
143 This driver adds support for ACPI controlled docking stations
146 tristate "Removable Drive Bay (EXPERIMENTAL)"
147 depends on EXPERIMENTAL
150 This driver adds support for ACPI controlled removable drive
151 bays such as the IBM ultrabay or the Dell Module Bay.
153 config ACPI_PROCESSOR
157 This driver installs ACPI as the idle handler for Linux, and uses
158 ACPI C2 and C3 processor states to save power, on systems that
159 support it. It is required by several flavors of cpufreq
160 Performance-state drivers.
162 config ACPI_HOTPLUG_CPU
164 depends on ACPI_PROCESSOR && HOTPLUG_CPU
165 select ACPI_CONTAINER
169 tristate "Thermal Zone"
170 depends on ACPI_PROCESSOR
173 This driver adds support for ACPI thermal zones. Most mobile and
174 some desktop systems support ACPI thermal zones. It is HIGHLY
175 recommended that this option be enabled, as your processor(s)
176 may be damaged without it.
181 depends on (X86 || IA64)
182 default y if IA64_GENERIC || IA64_SGI_SN2
185 tristate "ASUS/Medion Laptop Extras"
187 select BACKLIGHT_CLASS_DEVICE
189 This driver provides support for extra features of ACPI-compatible
190 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
191 support some Medion laptops (such as 9675 for example). It makes all
192 the extra buttons generate standard ACPI events that go through
193 /proc/acpi/events, and (on some models) adds support for changing the
194 display brightness and output, switching the LCD backlight on and off,
195 and most importantly, allows you to blink those fancy LEDs intended
196 for reporting mail and wireless status.
198 Note: display switching code is currently considered EXPERIMENTAL,
199 toying with these values may even lock your machine.
201 All settings are changed via /proc/acpi/asus directory entries. Owner
202 and group for these entries can be set with asus_uid and asus_gid
205 More information and a userspace daemon for handling the extra buttons
206 at <http://sourceforge.net/projects/acpi4asus/>.
208 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
209 driver is still under development, so if your laptop is unsupported or
210 something works not quite as expected, please use the mailing list
211 available on the above page (acpi4asus-user@lists.sourceforge.net).
213 NOTE: This driver is deprecated and will probably be removed soon,
214 use asus-laptop instead.
217 tristate "Toshiba Laptop Extras"
219 select BACKLIGHT_CLASS_DEVICE
221 This driver adds support for access to certain system settings
222 on "legacy free" Toshiba laptops. These laptops can be recognized by
223 their lack of a BIOS setup menu and APM support.
225 On these machines, all system configuration is handled through the
226 ACPI. This driver is required for access to controls not covered
227 by the general ACPI drivers, such as LCD brightness, video output,
230 This driver differs from the non-ACPI Toshiba laptop driver (located
231 under "Processor type and features") in several aspects.
232 Configuration is accessed by reading and writing text files in the
233 /proc tree instead of by program interface to /dev. Furthermore, no
234 power management functions are exposed, as those are handled by the
235 general ACPI drivers.
237 More information about this driver is available at
238 <http://memebeam.org/toys/ToshibaAcpiDriver>.
240 If you have a legacy free Toshiba laptop (such as the Libretto L1
243 config ACPI_CUSTOM_DSDT
244 bool "Include Custom DSDT"
245 depends on !STANDALONE
248 This option is to load a custom ACPI DSDT
249 If you don't know what that is, say N.
251 config ACPI_CUSTOM_DSDT_FILE
252 string "Custom DSDT Table file to include"
253 depends on ACPI_CUSTOM_DSDT
256 Enter the full path name to the file which includes the AmlCode
259 config ACPI_BLACKLIST_YEAR
260 int "Disable ACPI for systems before Jan 1st this year" if X86_32
263 enter a 4-digit year, eg. 2001 to disable ACPI by default
264 on platforms with DMI BIOS date before January 1st that year.
265 "acpi=force" can be used to override this mechanism.
267 Enter 0 to disable this mechanism and allow ACPI to
268 run by default no matter what the year. (default)
271 bool "Debug Statements"
274 The ACPI driver can optionally report errors with a great deal
275 of verbosity. Saying Y enables these statements. This will increase
276 your kernel size by around 50K.
278 config ACPI_DEBUG_FUNC_TRACE
279 bool "Additionally enable ACPI function tracing"
281 depends on ACPI_DEBUG
283 ACPI Debug Statements slow down ACPI processing. Function trace
284 is about half of the penalty and is rarely useful.
290 This driver is required on some systems for the proper operation of
291 the battery and thermal drivers. If you are compiling for a
292 mobile system, say Y.
302 This driver will enable your system to shut down using ACPI, and
303 dump your ACPI DSDT table using /proc/acpi/dsdt.
306 bool "Power Management Timer Support" if EMBEDDED
310 The Power Management Timer is available on all ACPI-capable,
311 in most cases even if ACPI is unusable or blacklisted.
313 This timing source is not affected by power management features
314 like aggressive processor idling, throttling, frequency and/or
315 voltage scaling, unlike the commonly used Time Stamp Counter
318 You should nearly always say Y here because many modern
319 systems require this timer.
321 config ACPI_CONTAINER
322 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
323 depends on EXPERIMENTAL
324 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
326 This allows _physical_ insertion and removal of CPUs and memory.
327 This can be useful, for example, on NUMA machines that support
328 ACPI based physical hotplug of nodes, or non-NUMA machines that
329 support physical cpu/memory hot-plug.
331 If one selects "m", this driver can be loaded with
332 "modprobe acpi_container".
334 config ACPI_HOTPLUG_MEMORY
335 tristate "Memory Hotplug"
336 depends on MEMORY_HOTPLUG
339 This driver adds supports for ACPI Memory Hotplug. This driver
340 provides support for fielding notifications on ACPI memory
341 devices (PNP0C80) which represent memory ranges that may be
342 onlined or offlined during runtime.
344 Enabling this driver assumes that your platform hardware
345 and firmware have support for hot-plugging physical memory. If
346 your system does not support physically adding or ripping out
347 memory DIMMs at some platform defined granularity (individually
348 or as a bank) at runtime, then you need not enable this driver.
350 If one selects "m," this driver can be loaded using the following
352 $>modprobe acpi_memhotplug
355 tristate "Smart Battery System"
359 This driver adds support for the Smart Battery System, another
360 type of access to battery information, found on some laptops.