6 bool "ACPI Support (Advanced Configuration and Power Interface) Support"
9 depends on !IA64_HP_SIM
10 depends on IA64 || X86
15 select HOTPLUG_CPU if X86 && SMP
16 select SUSPEND_SMP if X86 && SMP
19 Advanced Configuration and Power Interface (ACPI) support for
20 Linux requires an ACPI compliant platform (hardware/firmware),
21 and assumes the presence of OS-directed configuration and power
22 management (OSPM) software. This option will enlarge your
25 Linux ACPI provides a robust functional replacement for several
26 legacy configuration and power management interfaces, including
27 the Plug-and-Play BIOS specification (PnP BIOS), the
28 MultiProcessor Specification (MPS), and the Advanced Power
29 Management (APM) specification. If both ACPI and APM support
30 are configured, whichever is loaded first shall be used.
32 The ACPI SourceForge project contains the latest source code,
33 documentation, tools, mailing list subscription, and other
34 information. This project is available at:
35 <http://sourceforge.net/projects/acpi>
37 Linux support for ACPI is based on Intel Corporation's ACPI
38 Component Architecture (ACPI CA). For more information see:
39 <http://developer.intel.com/technology/iapc/acpi>
41 ACPI is an open industry specification co-developed by Compaq,
42 Intel, Microsoft, Phoenix, and Toshiba. The specification is
44 <http://www.acpi.info>
49 bool "Deprecated /proc/acpi files"
52 For backwards compatibility, this option allows
53 depricated /proc/acpi/ files to exist, even when
54 they have been replaced by functions in /sys.
55 The deprecated files (and their replacements) include:
57 /proc/acpi/sleep (/sys/power/state)
58 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
59 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
64 This option has no effect on /proc/acpi/ files
65 and functions which do not yet exist in /sys.
67 Say N to delete /proc/acpi/ files that have moved to /sys/
74 This driver adds support for the AC Adapter object, which indicates
75 whether a system is on AC, or not. If you have a system that can
76 switch between A/C and battery, say Y.
83 This driver adds support for battery information through
84 /proc/acpi/battery. If you have a mobile system with a battery,
92 This driver handles events on the power, sleep and lid buttons.
93 A daemon reads /proc/acpi/event and perform user-defined actions
94 such as shutting down the system. This is necessary for
95 software controlled poweroff.
99 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
101 This driver implement the ACPI Extensions For Display Adapters
102 for integrated graphics devices on motherboard, as specified in
103 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
104 control like defining the video POST device, retrieving EDID information
105 or to setup a video output, etc.
106 Note that this is an ref. implementation only. It may or may not work
107 for your integrated video device.
113 This driver adds support for ACPI fan devices, allowing user-mode
114 applications to perform basic fan control (on, off, status).
118 depends on EXPERIMENTAL
120 This driver adds support for ACPI controlled docking stations
123 tristate "Removable Drive Bay (EXPERIMENTAL)"
124 depends on EXPERIMENTAL
127 This driver adds support for ACPI controlled removable drive
128 bays such as the IBM ultrabay or the Dell Module Bay.
130 config ACPI_PROCESSOR
134 This driver installs ACPI as the idle handler for Linux, and uses
135 ACPI C2 and C3 processor states to save power, on systems that
136 support it. It is required by several flavors of cpufreq
137 Performance-state drivers.
139 config ACPI_HOTPLUG_CPU
141 depends on ACPI_PROCESSOR && HOTPLUG_CPU
142 select ACPI_CONTAINER
146 tristate "Thermal Zone"
147 depends on ACPI_PROCESSOR
150 This driver adds support for ACPI thermal zones. Most mobile and
151 some desktop systems support ACPI thermal zones. It is HIGHLY
152 recommended that this option be enabled, as your processor(s)
153 may be damaged without it.
158 depends on (X86 || IA64)
159 default y if IA64_GENERIC || IA64_SGI_SN2
162 tristate "ASUS/Medion Laptop Extras"
164 select BACKLIGHT_CLASS_DEVICE
166 This driver provides support for extra features of ACPI-compatible
167 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
168 support some Medion laptops (such as 9675 for example). It makes all
169 the extra buttons generate standard ACPI events that go through
170 /proc/acpi/events, and (on some models) adds support for changing the
171 display brightness and output, switching the LCD backlight on and off,
172 and most importantly, allows you to blink those fancy LEDs intended
173 for reporting mail and wireless status.
175 Note: display switching code is currently considered EXPERIMENTAL,
176 toying with these values may even lock your machine.
178 All settings are changed via /proc/acpi/asus directory entries. Owner
179 and group for these entries can be set with asus_uid and asus_gid
182 More information and a userspace daemon for handling the extra buttons
183 at <http://sourceforge.net/projects/acpi4asus/>.
185 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
186 driver is still under development, so if your laptop is unsupported or
187 something works not quite as expected, please use the mailing list
188 available on the above page (acpi4asus-user@lists.sourceforge.net).
190 NOTE: This driver is deprecated and will probably be removed soon,
191 use asus-laptop instead.
194 tristate "Toshiba Laptop Extras"
196 select BACKLIGHT_CLASS_DEVICE
198 This driver adds support for access to certain system settings
199 on "legacy free" Toshiba laptops. These laptops can be recognized by
200 their lack of a BIOS setup menu and APM support.
202 On these machines, all system configuration is handled through the
203 ACPI. This driver is required for access to controls not covered
204 by the general ACPI drivers, such as LCD brightness, video output,
207 This driver differs from the non-ACPI Toshiba laptop driver (located
208 under "Processor type and features") in several aspects.
209 Configuration is accessed by reading and writing text files in the
210 /proc tree instead of by program interface to /dev. Furthermore, no
211 power management functions are exposed, as those are handled by the
212 general ACPI drivers.
214 More information about this driver is available at
215 <http://memebeam.org/toys/ToshibaAcpiDriver>.
217 If you have a legacy free Toshiba laptop (such as the Libretto L1
220 config ACPI_CUSTOM_DSDT
221 bool "Include Custom DSDT"
222 depends on !STANDALONE
225 This option is to load a custom ACPI DSDT
226 If you don't know what that is, say N.
228 config ACPI_CUSTOM_DSDT_FILE
229 string "Custom DSDT Table file to include"
230 depends on ACPI_CUSTOM_DSDT
233 Enter the full path name to the file which includes the AmlCode
236 config ACPI_BLACKLIST_YEAR
237 int "Disable ACPI for systems before Jan 1st this year" if X86_32
240 enter a 4-digit year, eg. 2001 to disable ACPI by default
241 on platforms with DMI BIOS date before January 1st that year.
242 "acpi=force" can be used to override this mechanism.
244 Enter 0 to disable this mechanism and allow ACPI to
245 run by default no matter what the year. (default)
248 bool "Debug Statements"
251 The ACPI driver can optionally report errors with a great deal
252 of verbosity. Saying Y enables these statements. This will increase
253 your kernel size by around 50K.
255 config ACPI_DEBUG_FUNC_TRACE
256 bool "Additionally enable ACPI function tracing"
258 depends on ACPI_DEBUG
260 ACPI Debug Statements slow down ACPI processing. Function trace
261 is about half of the penalty and is rarely useful.
267 This driver is required on some systems for the proper operation of
268 the battery and thermal drivers. If you are compiling for a
269 mobile system, say Y.
279 This driver will enable your system to shut down using ACPI, and
280 dump your ACPI DSDT table using /proc/acpi/dsdt.
283 bool "Power Management Timer Support" if EMBEDDED
287 The Power Management Timer is available on all ACPI-capable,
288 in most cases even if ACPI is unusable or blacklisted.
290 This timing source is not affected by power management features
291 like aggressive processor idling, throttling, frequency and/or
292 voltage scaling, unlike the commonly used Time Stamp Counter
295 You should nearly always say Y here because many modern
296 systems require this timer.
298 config ACPI_CONTAINER
299 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
300 depends on EXPERIMENTAL
301 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
303 This allows _physical_ insertion and removal of CPUs and memory.
304 This can be useful, for example, on NUMA machines that support
305 ACPI based physical hotplug of nodes, or non-NUMA machines that
306 support physical cpu/memory hot-plug.
308 If one selects "m", this driver can be loaded with
309 "modprobe acpi_container".
311 config ACPI_HOTPLUG_MEMORY
312 tristate "Memory Hotplug"
313 depends on MEMORY_HOTPLUG
316 This driver adds supports for ACPI Memory Hotplug. This driver
317 provides support for fielding notifications on ACPI memory
318 devices (PNP0C80) which represent memory ranges that may be
319 onlined or offlined during runtime.
321 Enabling this driver assumes that your platform hardware
322 and firmware have support for hot-plugging physical memory. If
323 your system does not support physically adding or ripping out
324 memory DIMMs at some platform defined granularity (individually
325 or as a bank) at runtime, then you need not enable this driver.
327 If one selects "m," this driver can be loaded using the following
329 $>modprobe acpi_memhotplug
332 tristate "Smart Battery System (EXPERIMENTAL)"
334 depends on EXPERIMENTAL
336 This driver adds support for the Smart Battery System.
337 A "Smart Battery" is quite old and quite rare compared
338 to today's ACPI "Control Method" battery.