6 bool "ACPI Support (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 depricated /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56 they have been replaced by functions in /sys.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"
75 A user-space daemon, acpi, typically read /proc/acpi/event
76 and handled all ACPI sub-system generated events.
78 These events are now delivered to user-space via
79 either the input layer, or as netlink events.
81 This build option enables the old code for for legacy
82 user-space implementation. After some time, this will
83 be moved under CONFIG_ACPI_PROCFS, and then deleted.
90 This driver adds support for the AC Adapter object, which indicates
91 whether a system is on AC, or not. If you have a system that can
92 switch between A/C and battery, say Y.
99 This driver adds support for battery information through
100 /proc/acpi/battery. If you have a mobile system with a battery,
108 This driver handles events on the power, sleep and lid buttons.
109 A daemon reads /proc/acpi/event and perform user-defined actions
110 such as shutting down the system. This is necessary for
111 software controlled poweroff.
115 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
117 This driver implement the ACPI Extensions For Display Adapters
118 for integrated graphics devices on motherboard, as specified in
119 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
120 control like defining the video POST device, retrieving EDID information
121 or to setup a video output, etc.
122 Note that this is an ref. implementation only. It may or may not work
123 for your integrated video device.
129 This driver adds support for ACPI fan devices, allowing user-mode
130 applications to perform basic fan control (on, off, status).
134 depends on EXPERIMENTAL
136 This driver adds support for ACPI controlled docking stations
139 tristate "Removable Drive Bay (EXPERIMENTAL)"
140 depends on EXPERIMENTAL
143 This driver adds support for ACPI controlled removable drive
144 bays such as the IBM ultrabay or the Dell Module Bay.
146 config ACPI_PROCESSOR
150 This driver installs ACPI as the idle handler for Linux, and uses
151 ACPI C2 and C3 processor states to save power, on systems that
152 support it. It is required by several flavors of cpufreq
153 Performance-state drivers.
155 config ACPI_HOTPLUG_CPU
157 depends on ACPI_PROCESSOR && HOTPLUG_CPU
158 select ACPI_CONTAINER
162 tristate "Thermal Zone"
163 depends on ACPI_PROCESSOR
166 This driver adds support for ACPI thermal zones. Most mobile and
167 some desktop systems support ACPI thermal zones. It is HIGHLY
168 recommended that this option be enabled, as your processor(s)
169 may be damaged without it.
174 depends on (X86 || IA64)
175 default y if IA64_GENERIC || IA64_SGI_SN2
178 tristate "ASUS/Medion Laptop Extras"
180 select BACKLIGHT_CLASS_DEVICE
182 This driver provides support for extra features of ACPI-compatible
183 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
184 support some Medion laptops (such as 9675 for example). It makes all
185 the extra buttons generate standard ACPI events that go through
186 /proc/acpi/events, and (on some models) adds support for changing the
187 display brightness and output, switching the LCD backlight on and off,
188 and most importantly, allows you to blink those fancy LEDs intended
189 for reporting mail and wireless status.
191 Note: display switching code is currently considered EXPERIMENTAL,
192 toying with these values may even lock your machine.
194 All settings are changed via /proc/acpi/asus directory entries. Owner
195 and group for these entries can be set with asus_uid and asus_gid
198 More information and a userspace daemon for handling the extra buttons
199 at <http://sourceforge.net/projects/acpi4asus/>.
201 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
202 driver is still under development, so if your laptop is unsupported or
203 something works not quite as expected, please use the mailing list
204 available on the above page (acpi4asus-user@lists.sourceforge.net).
206 NOTE: This driver is deprecated and will probably be removed soon,
207 use asus-laptop instead.
210 tristate "Toshiba Laptop Extras"
212 select BACKLIGHT_CLASS_DEVICE
214 This driver adds support for access to certain system settings
215 on "legacy free" Toshiba laptops. These laptops can be recognized by
216 their lack of a BIOS setup menu and APM support.
218 On these machines, all system configuration is handled through the
219 ACPI. This driver is required for access to controls not covered
220 by the general ACPI drivers, such as LCD brightness, video output,
223 This driver differs from the non-ACPI Toshiba laptop driver (located
224 under "Processor type and features") in several aspects.
225 Configuration is accessed by reading and writing text files in the
226 /proc tree instead of by program interface to /dev. Furthermore, no
227 power management functions are exposed, as those are handled by the
228 general ACPI drivers.
230 More information about this driver is available at
231 <http://memebeam.org/toys/ToshibaAcpiDriver>.
233 If you have a legacy free Toshiba laptop (such as the Libretto L1
236 config ACPI_CUSTOM_DSDT
237 bool "Include Custom DSDT"
238 depends on !STANDALONE
241 This option is to load a custom ACPI DSDT
242 If you don't know what that is, say N.
244 config ACPI_CUSTOM_DSDT_FILE
245 string "Custom DSDT Table file to include"
246 depends on ACPI_CUSTOM_DSDT
249 Enter the full path name to the file which includes the AmlCode
252 config ACPI_BLACKLIST_YEAR
253 int "Disable ACPI for systems before Jan 1st this year" if X86_32
256 enter a 4-digit year, eg. 2001 to disable ACPI by default
257 on platforms with DMI BIOS date before January 1st that year.
258 "acpi=force" can be used to override this mechanism.
260 Enter 0 to disable this mechanism and allow ACPI to
261 run by default no matter what the year. (default)
264 bool "Debug Statements"
267 The ACPI driver can optionally report errors with a great deal
268 of verbosity. Saying Y enables these statements. This will increase
269 your kernel size by around 50K.
271 config ACPI_DEBUG_FUNC_TRACE
272 bool "Additionally enable ACPI function tracing"
274 depends on ACPI_DEBUG
276 ACPI Debug Statements slow down ACPI processing. Function trace
277 is about half of the penalty and is rarely useful.
283 This driver is required on some systems for the proper operation of
284 the battery and thermal drivers. If you are compiling for a
285 mobile system, say Y.
295 This driver will enable your system to shut down using ACPI, and
296 dump your ACPI DSDT table using /proc/acpi/dsdt.
299 bool "Power Management Timer Support" if EMBEDDED
303 The Power Management Timer is available on all ACPI-capable,
304 in most cases even if ACPI is unusable or blacklisted.
306 This timing source is not affected by power management features
307 like aggressive processor idling, throttling, frequency and/or
308 voltage scaling, unlike the commonly used Time Stamp Counter
311 You should nearly always say Y here because many modern
312 systems require this timer.
314 config ACPI_CONTAINER
315 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
316 depends on EXPERIMENTAL
317 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
319 This allows _physical_ insertion and removal of CPUs and memory.
320 This can be useful, for example, on NUMA machines that support
321 ACPI based physical hotplug of nodes, or non-NUMA machines that
322 support physical cpu/memory hot-plug.
324 If one selects "m", this driver can be loaded with
325 "modprobe acpi_container".
327 config ACPI_HOTPLUG_MEMORY
328 tristate "Memory Hotplug"
329 depends on MEMORY_HOTPLUG
332 This driver adds supports for ACPI Memory Hotplug. This driver
333 provides support for fielding notifications on ACPI memory
334 devices (PNP0C80) which represent memory ranges that may be
335 onlined or offlined during runtime.
337 Enabling this driver assumes that your platform hardware
338 and firmware have support for hot-plugging physical memory. If
339 your system does not support physically adding or ripping out
340 memory DIMMs at some platform defined granularity (individually
341 or as a bank) at runtime, then you need not enable this driver.
343 If one selects "m," this driver can be loaded using the following
345 $>modprobe acpi_memhotplug
348 tristate "Smart Battery System (EXPERIMENTAL)"
350 depends on EXPERIMENTAL
352 This driver adds support for the Smart Battery System.
353 A "Smart Battery" is quite old and quite rare compared
354 to today's ACPI "Control Method" battery.