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"
55 For backwards compatibility, this option allows
56 deprecated /proc/acpi/ files to exist, even when
57 they have been replaced by functions in /sys.
58 The deprecated files (and their replacements) include:
60 /proc/acpi/sleep (/sys/power/state)
61 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
62 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
63 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
64 /proc/acpi/battery (/sys/class/power_supply)
65 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
66 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
68 This option has no effect on /proc/acpi/ files
69 and functions which do not yet exist in /sys.
71 Say N to delete /proc/acpi/ files that have moved to /sys/
72 config ACPI_PROCFS_POWER
73 bool "Deprecated power /proc/acpi folders"
77 For backwards compatibility, this option allows
78 deprecated power /proc/acpi/ folders to exist, even when
79 they have been replaced by functions in /sys.
80 The deprecated folders (and their replacements) include:
81 /proc/acpi/battery/* (/sys/class/power_supply/*)
82 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
83 This option has no effect on /proc/acpi/ folders
84 and functions, which do not yet exist in /sys
86 Say N to delete power /proc/acpi/ folders that have moved to /sys/
87 config ACPI_PROC_EVENT
88 bool "Deprecated /proc/acpi/event support"
92 A user-space daemon, acpi, typically read /proc/acpi/event
93 and handled all ACPI sub-system generated events.
95 These events are now delivered to user-space via
96 either the input layer, or as netlink events.
98 This build option enables the old code for legacy
99 user-space implementation. After some time, this will
100 be moved under CONFIG_ACPI_PROCFS, and then deleted.
102 Say Y here to retain the old behaviour. Say N if your
103 user-space is newer than kernel 2.6.23 (September 2007).
106 tristate "AC Adapter"
111 This driver adds support for the AC Adapter object, which indicates
112 whether a system is on AC, or not. If you have a system that can
113 switch between A/C and battery, say Y.
121 This driver adds support for battery information through
122 /proc/acpi/battery. If you have a mobile system with a battery,
130 This driver handles events on the power, sleep and lid buttons.
131 A daemon reads /proc/acpi/event and perform user-defined actions
132 such as shutting down the system. This is necessary for
133 software controlled poweroff.
137 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
140 This driver implement the ACPI Extensions For Display Adapters
141 for integrated graphics devices on motherboard, as specified in
142 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
143 control like defining the video POST device, retrieving EDID information
144 or to setup a video output, etc.
145 Note that this is an ref. implementation only. It may or may not work
146 for your integrated video device.
152 This driver adds support for ACPI fan devices, allowing user-mode
153 applications to perform basic fan control (on, off, status).
157 depends on EXPERIMENTAL
159 This driver adds support for ACPI controlled docking stations
162 tristate "Removable Drive Bay (EXPERIMENTAL)"
163 depends on EXPERIMENTAL
166 This driver adds support for ACPI controlled removable drive
167 bays such as the IBM ultrabay or the Dell Module Bay.
169 config ACPI_PROCESSOR
173 This driver installs ACPI as the idle handler for Linux, and uses
174 ACPI C2 and C3 processor states to save power, on systems that
175 support it. It is required by several flavors of cpufreq
176 Performance-state drivers.
178 config ACPI_HOTPLUG_CPU
180 depends on ACPI_PROCESSOR && HOTPLUG_CPU
181 select ACPI_CONTAINER
185 tristate "Thermal Zone"
186 depends on ACPI_PROCESSOR
189 This driver adds support for ACPI thermal zones. Most mobile and
190 some desktop systems support ACPI thermal zones. It is HIGHLY
191 recommended that this option be enabled, as your processor(s)
192 may be damaged without it.
197 depends on (X86 || IA64)
198 default y if IA64_GENERIC || IA64_SGI_SN2
201 tristate "ASUS/Medion Laptop Extras"
203 select BACKLIGHT_CLASS_DEVICE
205 This driver provides support for extra features of ACPI-compatible
206 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
207 support some Medion laptops (such as 9675 for example). It makes all
208 the extra buttons generate standard ACPI events that go through
209 /proc/acpi/events, and (on some models) adds support for changing the
210 display brightness and output, switching the LCD backlight on and off,
211 and most importantly, allows you to blink those fancy LEDs intended
212 for reporting mail and wireless status.
214 Note: display switching code is currently considered EXPERIMENTAL,
215 toying with these values may even lock your machine.
217 All settings are changed via /proc/acpi/asus directory entries. Owner
218 and group for these entries can be set with asus_uid and asus_gid
221 More information and a userspace daemon for handling the extra buttons
222 at <http://sourceforge.net/projects/acpi4asus/>.
224 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
225 driver is still under development, so if your laptop is unsupported or
226 something works not quite as expected, please use the mailing list
227 available on the above page (acpi4asus-user@lists.sourceforge.net).
229 NOTE: This driver is deprecated and will probably be removed soon,
230 use asus-laptop instead.
233 tristate "Toshiba Laptop Extras"
235 select BACKLIGHT_CLASS_DEVICE
237 This driver adds support for access to certain system settings
238 on "legacy free" Toshiba laptops. These laptops can be recognized by
239 their lack of a BIOS setup menu and APM support.
241 On these machines, all system configuration is handled through the
242 ACPI. This driver is required for access to controls not covered
243 by the general ACPI drivers, such as LCD brightness, video output,
246 This driver differs from the non-ACPI Toshiba laptop driver (located
247 under "Processor type and features") in several aspects.
248 Configuration is accessed by reading and writing text files in the
249 /proc tree instead of by program interface to /dev. Furthermore, no
250 power management functions are exposed, as those are handled by the
251 general ACPI drivers.
253 More information about this driver is available at
254 <http://memebeam.org/toys/ToshibaAcpiDriver>.
256 If you have a legacy free Toshiba laptop (such as the Libretto L1
259 config ACPI_CUSTOM_DSDT
260 bool "Include Custom DSDT"
261 depends on !STANDALONE
264 This option is to load a custom ACPI DSDT
265 If you don't know what that is, say N.
267 config ACPI_CUSTOM_DSDT_FILE
268 string "Custom DSDT Table file to include"
269 depends on ACPI_CUSTOM_DSDT
272 Enter the full path name to the file which includes the AmlCode
275 config ACPI_BLACKLIST_YEAR
276 int "Disable ACPI for systems before Jan 1st this year" if X86_32
279 enter a 4-digit year, eg. 2001 to disable ACPI by default
280 on platforms with DMI BIOS date before January 1st that year.
281 "acpi=force" can be used to override this mechanism.
283 Enter 0 to disable this mechanism and allow ACPI to
284 run by default no matter what the year. (default)
287 bool "Debug Statements"
290 The ACPI driver can optionally report errors with a great deal
291 of verbosity. Saying Y enables these statements. This will increase
292 your kernel size by around 50K.
294 config ACPI_DEBUG_FUNC_TRACE
295 bool "Additionally enable ACPI function tracing"
297 depends on ACPI_DEBUG
299 ACPI Debug Statements slow down ACPI processing. Function trace
300 is about half of the penalty and is rarely useful.
306 This driver is required on some systems for the proper operation of
307 the battery and thermal drivers. If you are compiling for a
308 mobile system, say Y.
318 This driver will enable your system to shut down using ACPI, and
319 dump your ACPI DSDT table using /proc/acpi/dsdt.
322 bool "Power Management Timer Support" if EMBEDDED
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 power management features
330 like aggressive processor idling, throttling, frequency and/or
331 voltage scaling, unlike the commonly used Time Stamp Counter
334 You should nearly always say Y here because many modern
335 systems require this timer.
337 config ACPI_CONTAINER
338 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
339 depends on EXPERIMENTAL
340 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
342 This allows _physical_ insertion and removal of CPUs and memory.
343 This can be useful, for example, on NUMA machines that support
344 ACPI based physical hotplug of nodes, or non-NUMA machines that
345 support physical cpu/memory hot-plug.
347 If one selects "m", this driver can be loaded with
348 "modprobe acpi_container".
350 config ACPI_HOTPLUG_MEMORY
351 tristate "Memory Hotplug"
352 depends on MEMORY_HOTPLUG
355 This driver adds supports for ACPI Memory Hotplug. This driver
356 provides support for fielding notifications on ACPI memory
357 devices (PNP0C80) which represent memory ranges that may be
358 onlined or offlined during runtime.
360 Enabling this driver assumes that your platform hardware
361 and firmware have support for hot-plugging physical memory. If
362 your system does not support physically adding or ripping out
363 memory DIMMs at some platform defined granularity (individually
364 or as a bank) at runtime, then you need not enable this driver.
366 If one selects "m," this driver can be loaded using the following
368 $>modprobe acpi_memhotplug
371 tristate "Smart Battery System"
375 This driver adds support for the Smart Battery System, another
376 type of access to battery information, found on some laptops.