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56 they have been replaced by functions in /sys.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/battery (/sys/class/power_supply)
64 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
65 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
67 This option has no effect on /proc/acpi/ files
68 and functions which do not yet exist in /sys.
70 Say N to delete /proc/acpi/ files that have moved to /sys/
72 config ACPI_PROC_EVENT
73 bool "Deprecated /proc/acpi/event support"
77 A user-space daemon, acpi, typically read /proc/acpi/event
78 and handled all ACPI sub-system generated events.
80 These events are now delivered to user-space via
81 either the input layer, or as netlink events.
83 This build option enables the old code for legacy
84 user-space implementation. After some time, this will
85 be moved under CONFIG_ACPI_PROCFS, and then deleted.
87 Say Y here to retain the old behaviour. Say N if your
88 user-space is newer than kernel 2.6.23 (September 2007).
96 This driver adds support for the AC Adapter object, which indicates
97 whether a system is on AC, or not. If you have a system that can
98 switch between A/C and battery, say Y.
106 This driver adds support for battery information through
107 /proc/acpi/battery. If you have a mobile system with a battery,
115 This driver handles events on the power, sleep and lid buttons.
116 A daemon reads /proc/acpi/event and perform user-defined actions
117 such as shutting down the system. This is necessary for
118 software controlled poweroff.
122 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
125 This driver implement the ACPI Extensions For Display Adapters
126 for integrated graphics devices on motherboard, as specified in
127 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
128 control like defining the video POST device, retrieving EDID information
129 or to setup a video output, etc.
130 Note that this is an ref. implementation only. It may or may not work
131 for your integrated video device.
137 This driver adds support for ACPI fan devices, allowing user-mode
138 applications to perform basic fan control (on, off, status).
142 depends on EXPERIMENTAL
144 This driver adds support for ACPI controlled docking stations
147 tristate "Removable Drive Bay (EXPERIMENTAL)"
148 depends on EXPERIMENTAL
151 This driver adds support for ACPI controlled removable drive
152 bays such as the IBM ultrabay or the Dell Module Bay.
154 config ACPI_PROCESSOR
158 This driver installs ACPI as the idle handler for Linux, and uses
159 ACPI C2 and C3 processor states to save power, on systems that
160 support it. It is required by several flavors of cpufreq
161 Performance-state drivers.
163 config ACPI_HOTPLUG_CPU
165 depends on ACPI_PROCESSOR && HOTPLUG_CPU
166 select ACPI_CONTAINER
170 tristate "Thermal Zone"
171 depends on ACPI_PROCESSOR
174 This driver adds support for ACPI thermal zones. Most mobile and
175 some desktop systems support ACPI thermal zones. It is HIGHLY
176 recommended that this option be enabled, as your processor(s)
177 may be damaged without it.
182 depends on (X86 || IA64)
183 default y if IA64_GENERIC || IA64_SGI_SN2
186 tristate "ASUS/Medion Laptop Extras"
188 select BACKLIGHT_CLASS_DEVICE
190 This driver provides support for extra features of ACPI-compatible
191 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
192 support some Medion laptops (such as 9675 for example). It makes all
193 the extra buttons generate standard ACPI events that go through
194 /proc/acpi/events, and (on some models) adds support for changing the
195 display brightness and output, switching the LCD backlight on and off,
196 and most importantly, allows you to blink those fancy LEDs intended
197 for reporting mail and wireless status.
199 Note: display switching code is currently considered EXPERIMENTAL,
200 toying with these values may even lock your machine.
202 All settings are changed via /proc/acpi/asus directory entries. Owner
203 and group for these entries can be set with asus_uid and asus_gid
206 More information and a userspace daemon for handling the extra buttons
207 at <http://sourceforge.net/projects/acpi4asus/>.
209 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
210 driver is still under development, so if your laptop is unsupported or
211 something works not quite as expected, please use the mailing list
212 available on the above page (acpi4asus-user@lists.sourceforge.net).
214 NOTE: This driver is deprecated and will probably be removed soon,
215 use asus-laptop instead.
218 tristate "Toshiba Laptop Extras"
220 select BACKLIGHT_CLASS_DEVICE
222 This driver adds support for access to certain system settings
223 on "legacy free" Toshiba laptops. These laptops can be recognized by
224 their lack of a BIOS setup menu and APM support.
226 On these machines, all system configuration is handled through the
227 ACPI. This driver is required for access to controls not covered
228 by the general ACPI drivers, such as LCD brightness, video output,
231 This driver differs from the non-ACPI Toshiba laptop driver (located
232 under "Processor type and features") in several aspects.
233 Configuration is accessed by reading and writing text files in the
234 /proc tree instead of by program interface to /dev. Furthermore, no
235 power management functions are exposed, as those are handled by the
236 general ACPI drivers.
238 More information about this driver is available at
239 <http://memebeam.org/toys/ToshibaAcpiDriver>.
241 If you have a legacy free Toshiba laptop (such as the Libretto L1
244 config ACPI_CUSTOM_DSDT
245 bool "Include Custom DSDT"
246 depends on !STANDALONE
249 This option is to load a custom ACPI DSDT
250 If you don't know what that is, say N.
252 config ACPI_CUSTOM_DSDT_FILE
253 string "Custom DSDT Table file to include"
254 depends on ACPI_CUSTOM_DSDT
257 Enter the full path name to the file which includes the AmlCode
260 config ACPI_BLACKLIST_YEAR
261 int "Disable ACPI for systems before Jan 1st this year" if X86_32
264 enter a 4-digit year, eg. 2001 to disable ACPI by default
265 on platforms with DMI BIOS date before January 1st that year.
266 "acpi=force" can be used to override this mechanism.
268 Enter 0 to disable this mechanism and allow ACPI to
269 run by default no matter what the year. (default)
272 bool "Debug Statements"
275 The ACPI driver can optionally report errors with a great deal
276 of verbosity. Saying Y enables these statements. This will increase
277 your kernel size by around 50K.
279 config ACPI_DEBUG_FUNC_TRACE
280 bool "Additionally enable ACPI function tracing"
282 depends on ACPI_DEBUG
284 ACPI Debug Statements slow down ACPI processing. Function trace
285 is about half of the penalty and is rarely useful.
291 This driver is required on some systems for the proper operation of
292 the battery and thermal drivers. If you are compiling for a
293 mobile system, say Y.
303 This driver will enable your system to shut down using ACPI, and
304 dump your ACPI DSDT table using /proc/acpi/dsdt.
307 bool "Power Management Timer Support" if EMBEDDED
311 The Power Management Timer is available on all ACPI-capable,
312 in most cases even if ACPI is unusable or blacklisted.
314 This timing source is not affected by power management features
315 like aggressive processor idling, throttling, frequency and/or
316 voltage scaling, unlike the commonly used Time Stamp Counter
319 You should nearly always say Y here because many modern
320 systems require this timer.
322 config ACPI_CONTAINER
323 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
324 depends on EXPERIMENTAL
325 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
327 This allows _physical_ insertion and removal of CPUs and memory.
328 This can be useful, for example, on NUMA machines that support
329 ACPI based physical hotplug of nodes, or non-NUMA machines that
330 support physical cpu/memory hot-plug.
332 If one selects "m", this driver can be loaded with
333 "modprobe acpi_container".
335 config ACPI_HOTPLUG_MEMORY
336 tristate "Memory Hotplug"
337 depends on MEMORY_HOTPLUG
340 This driver adds supports for ACPI Memory Hotplug. This driver
341 provides support for fielding notifications on ACPI memory
342 devices (PNP0C80) which represent memory ranges that may be
343 onlined or offlined during runtime.
345 Enabling this driver assumes that your platform hardware
346 and firmware have support for hot-plugging physical memory. If
347 your system does not support physically adding or ripping out
348 memory DIMMs at some platform defined granularity (individually
349 or as a bank) at runtime, then you need not enable this driver.
351 If one selects "m," this driver can be loaded using the following
353 $>modprobe acpi_memhotplug
356 tristate "Smart Battery System"
360 This driver adds support for the Smart Battery System, another
361 type of access to battery information, found on some laptops.