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>
46 bool "Deprecated /proc/acpi files"
49 For backwards compatibility, this option allows
50 depricated /proc/acpi/ files to exist, even when
51 they have been replaced by functions in /sys.
52 The deprecated files (and their replacements) include:
54 /proc/acpi/sleep (/sys/power/state)
55 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
56 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
57 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
58 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
59 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
61 This option has no effect on /proc/acpi/ files
62 and functions which do not yet exist in /sys.
64 Say N to delete /proc/acpi/ files that have moved to /sys/
66 config ACPI_PROCFS_SLEEP
67 bool "/proc/acpi/sleep (deprecated)"
68 depends on PM_SLEEP && ACPI_PROCFS
71 Create /proc/acpi/sleep
72 Deprecated by /sys/power/state
79 This driver adds support for the AC Adapter object, which indicates
80 whether a system is on AC, or not. If you have a system that can
81 switch between A/C and battery, say Y.
88 This driver adds support for battery information through
89 /proc/acpi/battery. If you have a mobile system with a battery,
97 This driver handles events on the power, sleep and lid buttons.
98 A daemon reads /proc/acpi/event and perform user-defined actions
99 such as shutting down the system. This is necessary for
100 software controlled poweroff.
104 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
106 This driver implement the ACPI Extensions For Display Adapters
107 for integrated graphics devices on motherboard, as specified in
108 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
109 control like defining the video POST device, retrieving EDID information
110 or to setup a video output, etc.
111 Note that this is an ref. implementation only. It may or may not work
112 for your integrated video device.
118 This driver adds support for ACPI fan devices, allowing user-mode
119 applications to perform basic fan control (on, off, status).
123 depends on EXPERIMENTAL
125 This driver adds support for ACPI controlled docking stations
128 tristate "Removable Drive Bay (EXPERIMENTAL)"
129 depends on EXPERIMENTAL
132 This driver adds support for ACPI controlled removable drive
133 bays such as the IBM ultrabay or the Dell Module Bay.
135 config ACPI_PROCESSOR
139 This driver installs ACPI as the idle handler for Linux, and uses
140 ACPI C2 and C3 processor states to save power, on systems that
141 support it. It is required by several flavors of cpufreq
142 Performance-state drivers.
144 config ACPI_HOTPLUG_CPU
146 depends on ACPI_PROCESSOR && HOTPLUG_CPU
147 select ACPI_CONTAINER
151 tristate "Thermal Zone"
152 depends on ACPI_PROCESSOR
155 This driver adds support for ACPI thermal zones. Most mobile and
156 some desktop systems support ACPI thermal zones. It is HIGHLY
157 recommended that this option be enabled, as your processor(s)
158 may be damaged without it.
163 depends on (X86 || IA64)
164 default y if IA64_GENERIC || IA64_SGI_SN2
167 tristate "ASUS/Medion Laptop Extras"
169 select BACKLIGHT_CLASS_DEVICE
171 This driver provides support for extra features of ACPI-compatible
172 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
173 support some Medion laptops (such as 9675 for example). It makes all
174 the extra buttons generate standard ACPI events that go through
175 /proc/acpi/events, and (on some models) adds support for changing the
176 display brightness and output, switching the LCD backlight on and off,
177 and most importantly, allows you to blink those fancy LEDs intended
178 for reporting mail and wireless status.
180 Note: display switching code is currently considered EXPERIMENTAL,
181 toying with these values may even lock your machine.
183 All settings are changed via /proc/acpi/asus directory entries. Owner
184 and group for these entries can be set with asus_uid and asus_gid
187 More information and a userspace daemon for handling the extra buttons
188 at <http://sourceforge.net/projects/acpi4asus/>.
190 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
191 driver is still under development, so if your laptop is unsupported or
192 something works not quite as expected, please use the mailing list
193 available on the above page (acpi4asus-user@lists.sourceforge.net).
195 NOTE: This driver is deprecated and will probably be removed soon,
196 use asus-laptop instead.
199 tristate "Toshiba Laptop Extras"
201 select BACKLIGHT_CLASS_DEVICE
203 This driver adds support for access to certain system settings
204 on "legacy free" Toshiba laptops. These laptops can be recognized by
205 their lack of a BIOS setup menu and APM support.
207 On these machines, all system configuration is handled through the
208 ACPI. This driver is required for access to controls not covered
209 by the general ACPI drivers, such as LCD brightness, video output,
212 This driver differs from the non-ACPI Toshiba laptop driver (located
213 under "Processor type and features") in several aspects.
214 Configuration is accessed by reading and writing text files in the
215 /proc tree instead of by program interface to /dev. Furthermore, no
216 power management functions are exposed, as those are handled by the
217 general ACPI drivers.
219 More information about this driver is available at
220 <http://memebeam.org/toys/ToshibaAcpiDriver>.
222 If you have a legacy free Toshiba laptop (such as the Libretto L1
225 config ACPI_CUSTOM_DSDT
226 bool "Include Custom DSDT"
227 depends on !STANDALONE
230 This option is to load a custom ACPI DSDT
231 If you don't know what that is, say N.
233 config ACPI_CUSTOM_DSDT_FILE
234 string "Custom DSDT Table file to include"
235 depends on ACPI_CUSTOM_DSDT
238 Enter the full path name to the file which includes the AmlCode
241 config ACPI_BLACKLIST_YEAR
242 int "Disable ACPI for systems before Jan 1st this year" if X86_32
245 enter a 4-digit year, eg. 2001 to disable ACPI by default
246 on platforms with DMI BIOS date before January 1st that year.
247 "acpi=force" can be used to override this mechanism.
249 Enter 0 to disable this mechanism and allow ACPI to
250 run by default no matter what the year. (default)
253 bool "Debug Statements"
256 The ACPI driver can optionally report errors with a great deal
257 of verbosity. Saying Y enables these statements. This will increase
258 your kernel size by around 50K.
260 config ACPI_DEBUG_FUNC_TRACE
261 bool "Additionally enable ACPI function tracing"
263 depends on ACPI_DEBUG
265 ACPI Debug Statements slow down ACPI processing. Function trace
266 is about half of the penalty and is rarely useful.
272 This driver is required on some systems for the proper operation of
273 the battery and thermal drivers. If you are compiling for a
274 mobile system, say Y.
284 This driver will enable your system to shut down using ACPI, and
285 dump your ACPI DSDT table using /proc/acpi/dsdt.
288 bool "Power Management Timer Support" if EMBEDDED
292 The Power Management Timer is available on all ACPI-capable,
293 in most cases even if ACPI is unusable or blacklisted.
295 This timing source is not affected by power management features
296 like aggressive processor idling, throttling, frequency and/or
297 voltage scaling, unlike the commonly used Time Stamp Counter
300 You should nearly always say Y here because many modern
301 systems require this timer.
303 config ACPI_CONTAINER
304 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
305 depends on EXPERIMENTAL
306 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
308 This allows _physical_ insertion and removal of CPUs and memory.
309 This can be useful, for example, on NUMA machines that support
310 ACPI based physical hotplug of nodes, or non-NUMA machines that
311 support physical cpu/memory hot-plug.
313 If one selects "m", this driver can be loaded with
314 "modprobe acpi_container".
316 config ACPI_HOTPLUG_MEMORY
317 tristate "Memory Hotplug"
318 depends on MEMORY_HOTPLUG
321 This driver adds supports for ACPI Memory Hotplug. This driver
322 provides support for fielding notifications on ACPI memory
323 devices (PNP0C80) which represent memory ranges that may be
324 onlined or offlined during runtime.
326 Enabling this driver assumes that your platform hardware
327 and firmware have support for hot-plugging physical memory. If
328 your system does not support physically adding or ripping out
329 memory DIMMs at some platform defined granularity (individually
330 or as a bank) at runtime, then you need not enable this driver.
332 If one selects "m," this driver can be loaded using the following
334 $>modprobe acpi_memhotplug
337 tristate "Smart Battery System (EXPERIMENTAL)"
339 depends on EXPERIMENTAL
341 This driver adds support for the Smart Battery System.
342 A "Smart Battery" is quite old and quite rare compared
343 to today's ACPI "Control Method" battery.