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56 they have been replaced by functions in /sys.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_PROCFS_SLEEP
72 bool "/proc/acpi/sleep (deprecated)"
73 depends on PM_SLEEP && ACPI_PROCFS
76 Create /proc/acpi/sleep
77 Deprecated by /sys/power/state
84 This driver adds support for the AC Adapter object, which indicates
85 whether a system is on AC, or not. If you have a system that can
86 switch between A/C and battery, say Y.
93 This driver adds support for battery information through
94 /proc/acpi/battery. If you have a mobile system with a battery,
102 This driver handles events on the power, sleep and lid buttons.
103 A daemon reads /proc/acpi/event and perform user-defined actions
104 such as shutting down the system. This is necessary for
105 software controlled poweroff.
109 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
111 This driver implement the ACPI Extensions For Display Adapters
112 for integrated graphics devices on motherboard, as specified in
113 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
114 control like defining the video POST device, retrieving EDID information
115 or to setup a video output, etc.
116 Note that this is an ref. implementation only. It may or may not work
117 for your integrated video device.
123 This driver adds support for ACPI fan devices, allowing user-mode
124 applications to perform basic fan control (on, off, status).
128 depends on EXPERIMENTAL
130 This driver adds support for ACPI controlled docking stations
133 tristate "Removable Drive Bay (EXPERIMENTAL)"
134 depends on EXPERIMENTAL
137 This driver adds support for ACPI controlled removable drive
138 bays such as the IBM ultrabay or the Dell Module Bay.
140 config ACPI_PROCESSOR
144 This driver installs ACPI as the idle handler for Linux, and uses
145 ACPI C2 and C3 processor states to save power, on systems that
146 support it. It is required by several flavors of cpufreq
147 Performance-state drivers.
149 config ACPI_HOTPLUG_CPU
151 depends on ACPI_PROCESSOR && HOTPLUG_CPU
152 select ACPI_CONTAINER
156 tristate "Thermal Zone"
157 depends on ACPI_PROCESSOR
160 This driver adds support for ACPI thermal zones. Most mobile and
161 some desktop systems support ACPI thermal zones. It is HIGHLY
162 recommended that this option be enabled, as your processor(s)
163 may be damaged without it.
168 depends on (X86 || IA64)
169 default y if IA64_GENERIC || IA64_SGI_SN2
172 tristate "ASUS/Medion Laptop Extras"
174 select BACKLIGHT_CLASS_DEVICE
176 This driver provides support for extra features of ACPI-compatible
177 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
178 support some Medion laptops (such as 9675 for example). It makes all
179 the extra buttons generate standard ACPI events that go through
180 /proc/acpi/events, and (on some models) adds support for changing the
181 display brightness and output, switching the LCD backlight on and off,
182 and most importantly, allows you to blink those fancy LEDs intended
183 for reporting mail and wireless status.
185 Note: display switching code is currently considered EXPERIMENTAL,
186 toying with these values may even lock your machine.
188 All settings are changed via /proc/acpi/asus directory entries. Owner
189 and group for these entries can be set with asus_uid and asus_gid
192 More information and a userspace daemon for handling the extra buttons
193 at <http://sourceforge.net/projects/acpi4asus/>.
195 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
196 driver is still under development, so if your laptop is unsupported or
197 something works not quite as expected, please use the mailing list
198 available on the above page (acpi4asus-user@lists.sourceforge.net).
200 NOTE: This driver is deprecated and will probably be removed soon,
201 use asus-laptop instead.
204 tristate "Toshiba Laptop Extras"
206 select BACKLIGHT_CLASS_DEVICE
208 This driver adds support for access to certain system settings
209 on "legacy free" Toshiba laptops. These laptops can be recognized by
210 their lack of a BIOS setup menu and APM support.
212 On these machines, all system configuration is handled through the
213 ACPI. This driver is required for access to controls not covered
214 by the general ACPI drivers, such as LCD brightness, video output,
217 This driver differs from the non-ACPI Toshiba laptop driver (located
218 under "Processor type and features") in several aspects.
219 Configuration is accessed by reading and writing text files in the
220 /proc tree instead of by program interface to /dev. Furthermore, no
221 power management functions are exposed, as those are handled by the
222 general ACPI drivers.
224 More information about this driver is available at
225 <http://memebeam.org/toys/ToshibaAcpiDriver>.
227 If you have a legacy free Toshiba laptop (such as the Libretto L1
230 config ACPI_CUSTOM_DSDT
231 bool "Include Custom DSDT"
232 depends on !STANDALONE
235 This option is to load a custom ACPI DSDT
236 If you don't know what that is, say N.
238 config ACPI_CUSTOM_DSDT_FILE
239 string "Custom DSDT Table file to include"
240 depends on ACPI_CUSTOM_DSDT
243 Enter the full path name to the file which includes the AmlCode
246 config ACPI_BLACKLIST_YEAR
247 int "Disable ACPI for systems before Jan 1st this year" if X86_32
250 enter a 4-digit year, eg. 2001 to disable ACPI by default
251 on platforms with DMI BIOS date before January 1st that year.
252 "acpi=force" can be used to override this mechanism.
254 Enter 0 to disable this mechanism and allow ACPI to
255 run by default no matter what the year. (default)
258 bool "Debug Statements"
261 The ACPI driver can optionally report errors with a great deal
262 of verbosity. Saying Y enables these statements. This will increase
263 your kernel size by around 50K.
265 config ACPI_DEBUG_FUNC_TRACE
266 bool "Additionally enable ACPI function tracing"
268 depends on ACPI_DEBUG
270 ACPI Debug Statements slow down ACPI processing. Function trace
271 is about half of the penalty and is rarely useful.
277 This driver is required on some systems for the proper operation of
278 the battery and thermal drivers. If you are compiling for a
279 mobile system, say Y.
289 This driver will enable your system to shut down using ACPI, and
290 dump your ACPI DSDT table using /proc/acpi/dsdt.
293 bool "Power Management Timer Support" if EMBEDDED
297 The Power Management Timer is available on all ACPI-capable,
298 in most cases even if ACPI is unusable or blacklisted.
300 This timing source is not affected by power management features
301 like aggressive processor idling, throttling, frequency and/or
302 voltage scaling, unlike the commonly used Time Stamp Counter
305 You should nearly always say Y here because many modern
306 systems require this timer.
308 config ACPI_CONTAINER
309 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
310 depends on EXPERIMENTAL
311 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
313 This allows _physical_ insertion and removal of CPUs and memory.
314 This can be useful, for example, on NUMA machines that support
315 ACPI based physical hotplug of nodes, or non-NUMA machines that
316 support physical cpu/memory hot-plug.
318 If one selects "m", this driver can be loaded with
319 "modprobe acpi_container".
321 config ACPI_HOTPLUG_MEMORY
322 tristate "Memory Hotplug"
323 depends on MEMORY_HOTPLUG
326 This driver adds supports for ACPI Memory Hotplug. This driver
327 provides support for fielding notifications on ACPI memory
328 devices (PNP0C80) which represent memory ranges that may be
329 onlined or offlined during runtime.
331 Enabling this driver assumes that your platform hardware
332 and firmware have support for hot-plugging physical memory. If
333 your system does not support physically adding or ripping out
334 memory DIMMs at some platform defined granularity (individually
335 or as a bank) at runtime, then you need not enable this driver.
337 If one selects "m," this driver can be loaded using the following
339 $>modprobe acpi_memhotplug
342 tristate "Smart Battery System (EXPERIMENTAL)"
344 depends on EXPERIMENTAL
346 This driver adds support for the Smart Battery System.
347 A "Smart Battery" is quite old and quite rare compared
348 to today's ACPI "Control Method" battery.