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56 they have been replaced by functions in /sys.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