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"
55 For backwards compatibility, this option allows
56 deprecated /proc/acpi/ files to exist, even when
57 they have been replaced by functions in /sys.
58 The deprecated files (and their replacements) include:
60 /proc/acpi/sleep (/sys/power/state)
61 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
62 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
63 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
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/
71 config ACPI_PROCFS_POWER
72 bool "Deprecated power /proc/acpi folders"
76 For backwards compatibility, this option allows
77 deprecated power /proc/acpi/ folders to exist, even when
78 they have been replaced by functions in /sys.
79 The deprecated folders (and their replacements) include:
80 /proc/acpi/battery/* (/sys/class/power_supply/*)
81 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
82 This option has no effect on /proc/acpi/ folders
83 and functions, which do not yet exist in /sys
85 Say N to delete power /proc/acpi/ folders that have moved to /sys/
86 config ACPI_PROC_EVENT
87 bool "Deprecated /proc/acpi/event support"
91 A user-space daemon, acpi, typically read /proc/acpi/event
92 and handled all ACPI sub-system generated events.
94 These events are now delivered to user-space via
95 either the input layer, or as netlink events.
97 This build option enables the old code for legacy
98 user-space implementation. After some time, this will
99 be moved under CONFIG_ACPI_PROCFS, and then deleted.
101 Say Y here to retain the old behaviour. Say N if your
102 user-space is newer than kernel 2.6.23 (September 2007).
105 tristate "AC Adapter"
110 This driver adds support for the AC Adapter object, which indicates
111 whether a system is on AC, or not. If you have a system that can
112 switch between A/C and battery, say Y.
120 This driver adds support for battery information through
121 /proc/acpi/battery. If you have a mobile system with a battery,
129 This driver handles events on the power, sleep and lid buttons.
130 A daemon reads /proc/acpi/event and perform user-defined actions
131 such as shutting down the system. This is necessary for
132 software controlled poweroff.
136 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
139 This driver implement the ACPI Extensions For Display Adapters
140 for integrated graphics devices on motherboard, as specified in
141 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
142 control like defining the video POST device, retrieving EDID information
143 or to setup a video output, etc.
144 Note that this is an ref. implementation only. It may or may not work
145 for your integrated video device.
151 This driver adds support for ACPI fan devices, allowing user-mode
152 applications to perform basic fan control (on, off, status).
156 depends on EXPERIMENTAL
158 This driver adds support for ACPI controlled docking stations
161 tristate "Removable Drive Bay (EXPERIMENTAL)"
162 depends on EXPERIMENTAL
165 This driver adds support for ACPI controlled removable drive
166 bays such as the IBM ultrabay or the Dell Module Bay.
168 config ACPI_PROCESSOR
172 This driver installs ACPI as the idle handler for Linux, and uses
173 ACPI C2 and C3 processor states to save power, on systems that
174 support it. It is required by several flavors of cpufreq
175 Performance-state drivers.
177 config ACPI_HOTPLUG_CPU
179 depends on ACPI_PROCESSOR && HOTPLUG_CPU
180 select ACPI_CONTAINER
184 tristate "Thermal Zone"
185 depends on ACPI_PROCESSOR
188 This driver adds support for ACPI thermal zones. Most mobile and
189 some desktop systems support ACPI thermal zones. It is HIGHLY
190 recommended that this option be enabled, as your processor(s)
191 may be damaged without it.
196 depends on (X86 || IA64)
197 default y if IA64_GENERIC || IA64_SGI_SN2
200 tristate "ASUS/Medion Laptop Extras"
202 select BACKLIGHT_CLASS_DEVICE
204 This driver provides support for extra features of ACPI-compatible
205 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
206 support some Medion laptops (such as 9675 for example). It makes all
207 the extra buttons generate standard ACPI events that go through
208 /proc/acpi/events, and (on some models) adds support for changing the
209 display brightness and output, switching the LCD backlight on and off,
210 and most importantly, allows you to blink those fancy LEDs intended
211 for reporting mail and wireless status.
213 Note: display switching code is currently considered EXPERIMENTAL,
214 toying with these values may even lock your machine.
216 All settings are changed via /proc/acpi/asus directory entries. Owner
217 and group for these entries can be set with asus_uid and asus_gid
220 More information and a userspace daemon for handling the extra buttons
221 at <http://sourceforge.net/projects/acpi4asus/>.
223 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
224 driver is still under development, so if your laptop is unsupported or
225 something works not quite as expected, please use the mailing list
226 available on the above page (acpi4asus-user@lists.sourceforge.net).
228 NOTE: This driver is deprecated and will probably be removed soon,
229 use asus-laptop instead.
232 tristate "Toshiba Laptop Extras"
234 select BACKLIGHT_CLASS_DEVICE
236 This driver adds support for access to certain system settings
237 on "legacy free" Toshiba laptops. These laptops can be recognized by
238 their lack of a BIOS setup menu and APM support.
240 On these machines, all system configuration is handled through the
241 ACPI. This driver is required for access to controls not covered
242 by the general ACPI drivers, such as LCD brightness, video output,
245 This driver differs from the non-ACPI Toshiba laptop driver (located
246 under "Processor type and features") in several aspects.
247 Configuration is accessed by reading and writing text files in the
248 /proc tree instead of by program interface to /dev. Furthermore, no
249 power management functions are exposed, as those are handled by the
250 general ACPI drivers.
252 More information about this driver is available at
253 <http://memebeam.org/toys/ToshibaAcpiDriver>.
255 If you have a legacy free Toshiba laptop (such as the Libretto L1
258 config ACPI_CUSTOM_DSDT
259 bool "Include Custom DSDT"
260 depends on !STANDALONE
263 This option is to load a custom ACPI DSDT
264 If you don't know what that is, say N.
266 config ACPI_CUSTOM_DSDT_FILE
267 string "Custom DSDT Table file to include"
268 depends on ACPI_CUSTOM_DSDT
271 Enter the full path name to the file which includes the AmlCode
274 config ACPI_BLACKLIST_YEAR
275 int "Disable ACPI for systems before Jan 1st this year" if X86_32
278 enter a 4-digit year, eg. 2001 to disable ACPI by default
279 on platforms with DMI BIOS date before January 1st that year.
280 "acpi=force" can be used to override this mechanism.
282 Enter 0 to disable this mechanism and allow ACPI to
283 run by default no matter what the year. (default)
286 bool "Debug Statements"
289 The ACPI driver can optionally report errors with a great deal
290 of verbosity. Saying Y enables these statements. This will increase
291 your kernel size by around 50K.
293 config ACPI_DEBUG_FUNC_TRACE
294 bool "Additionally enable ACPI function tracing"
296 depends on ACPI_DEBUG
298 ACPI Debug Statements slow down ACPI processing. Function trace
299 is about half of the penalty and is rarely useful.
305 This driver is required on some systems for the proper operation of
306 the battery and thermal drivers. If you are compiling for a
307 mobile system, say Y.
317 This driver will enable your system to shut down using ACPI, and
318 dump your ACPI DSDT table using /proc/acpi/dsdt.
321 bool "Power Management Timer Support" if EMBEDDED
325 The Power Management Timer is available on all ACPI-capable,
326 in most cases even if ACPI is unusable or blacklisted.
328 This timing source is not affected by power management features
329 like aggressive processor idling, throttling, frequency and/or
330 voltage scaling, unlike the commonly used Time Stamp Counter
333 You should nearly always say Y here because many modern
334 systems require this timer.
336 config ACPI_CONTAINER
337 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
338 depends on EXPERIMENTAL
339 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
341 This allows _physical_ insertion and removal of CPUs and memory.
342 This can be useful, for example, on NUMA machines that support
343 ACPI based physical hotplug of nodes, or non-NUMA machines that
344 support physical cpu/memory hot-plug.
346 If one selects "m", this driver can be loaded with
347 "modprobe acpi_container".
349 config ACPI_HOTPLUG_MEMORY
350 tristate "Memory Hotplug"
351 depends on MEMORY_HOTPLUG
354 This driver adds supports for ACPI Memory Hotplug. This driver
355 provides support for fielding notifications on ACPI memory
356 devices (PNP0C80) which represent memory ranges that may be
357 onlined or offlined during runtime.
359 Enabling this driver assumes that your platform hardware
360 and firmware have support for hot-plugging physical memory. If
361 your system does not support physically adding or ripping out
362 memory DIMMs at some platform defined granularity (individually
363 or as a bank) at runtime, then you need not enable this driver.
365 If one selects "m," this driver can be loaded using the following
367 $>modprobe acpi_memhotplug
370 tristate "Smart Battery System"
374 This driver adds support for the Smart Battery System, another
375 type of access to battery information, found on some laptops.