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"
54 For backwards compatibility, this option allows
55 deprecated /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56 they have been replaced by functions in /sys.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/
70 config ACPI_PROCFS_POWER
71 bool "Deprecated power /proc/acpi folders"
75 For backwards compatibility, this option allows
76 deprecated power /proc/acpi/ folders to exist, even when
77 they have been replaced by functions in /sys.
78 The deprecated folders (and their replacements) include:
79 /proc/acpi/battery/* (/sys/class/power_supply/*)
80 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
81 This option has no effect on /proc/acpi/ folders
82 and functions, which do not yet exist in /sys
84 Say N to delete power /proc/acpi/ folders that have moved to /sys/
85 config ACPI_PROC_EVENT
86 bool "Deprecated /proc/acpi/event support"
90 A user-space daemon, acpi, typically read /proc/acpi/event
91 and handled all ACPI sub-system generated events.
93 These events are now delivered to user-space via
94 either the input layer, or as netlink events.
96 This build option enables the old code for legacy
97 user-space implementation. After some time, this will
98 be moved under CONFIG_ACPI_PROCFS, and then deleted.
100 Say Y here to retain the old behaviour. Say N if your
101 user-space is newer than kernel 2.6.23 (September 2007).
104 tristate "AC Adapter"
109 This driver adds support for the AC Adapter object, which indicates
110 whether a system is on AC, or not. If you have a system that can
111 switch between A/C and battery, say Y.
119 This driver adds support for battery information through
120 /proc/acpi/battery. If you have a mobile system with a battery,
128 This driver handles events on the power, sleep and lid buttons.
129 A daemon reads /proc/acpi/event and perform user-defined actions
130 such as shutting down the system. This is necessary for
131 software controlled poweroff.
135 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
138 This driver implement the ACPI Extensions For Display Adapters
139 for integrated graphics devices on motherboard, as specified in
140 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
141 control like defining the video POST device, retrieving EDID information
142 or to setup a video output, etc.
143 Note that this is an ref. implementation only. It may or may not work
144 for your integrated video device.
150 This driver adds support for ACPI fan devices, allowing user-mode
151 applications to perform basic fan control (on, off, status).
155 depends on EXPERIMENTAL
157 This driver adds support for ACPI controlled docking stations
160 tristate "Removable Drive Bay (EXPERIMENTAL)"
161 depends on EXPERIMENTAL
164 This driver adds support for ACPI controlled removable drive
165 bays such as the IBM ultrabay or the Dell Module Bay.
167 config ACPI_PROCESSOR
171 This driver installs ACPI as the idle handler for Linux, and uses
172 ACPI C2 and C3 processor states to save power, on systems that
173 support it. It is required by several flavors of cpufreq
174 Performance-state drivers.
176 config ACPI_HOTPLUG_CPU
178 depends on ACPI_PROCESSOR && HOTPLUG_CPU
179 select ACPI_CONTAINER
183 tristate "Thermal Zone"
184 depends on ACPI_PROCESSOR
187 This driver adds support for ACPI thermal zones. Most mobile and
188 some desktop systems support ACPI thermal zones. It is HIGHLY
189 recommended that this option be enabled, as your processor(s)
190 may be damaged without it.
195 depends on (X86 || IA64)
196 default y if IA64_GENERIC || IA64_SGI_SN2
199 tristate "ASUS/Medion Laptop Extras"
201 select BACKLIGHT_CLASS_DEVICE
203 This driver provides support for extra features of ACPI-compatible
204 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
205 support some Medion laptops (such as 9675 for example). It makes all
206 the extra buttons generate standard ACPI events that go through
207 /proc/acpi/events, and (on some models) adds support for changing the
208 display brightness and output, switching the LCD backlight on and off,
209 and most importantly, allows you to blink those fancy LEDs intended
210 for reporting mail and wireless status.
212 Note: display switching code is currently considered EXPERIMENTAL,
213 toying with these values may even lock your machine.
215 All settings are changed via /proc/acpi/asus directory entries. Owner
216 and group for these entries can be set with asus_uid and asus_gid
219 More information and a userspace daemon for handling the extra buttons
220 at <http://sourceforge.net/projects/acpi4asus/>.
222 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
223 driver is still under development, so if your laptop is unsupported or
224 something works not quite as expected, please use the mailing list
225 available on the above page (acpi4asus-user@lists.sourceforge.net).
227 NOTE: This driver is deprecated and will probably be removed soon,
228 use asus-laptop instead.
231 tristate "Toshiba Laptop Extras"
233 select BACKLIGHT_CLASS_DEVICE
235 This driver adds support for access to certain system settings
236 on "legacy free" Toshiba laptops. These laptops can be recognized by
237 their lack of a BIOS setup menu and APM support.
239 On these machines, all system configuration is handled through the
240 ACPI. This driver is required for access to controls not covered
241 by the general ACPI drivers, such as LCD brightness, video output,
244 This driver differs from the non-ACPI Toshiba laptop driver (located
245 under "Processor type and features") in several aspects.
246 Configuration is accessed by reading and writing text files in the
247 /proc tree instead of by program interface to /dev. Furthermore, no
248 power management functions are exposed, as those are handled by the
249 general ACPI drivers.
251 More information about this driver is available at
252 <http://memebeam.org/toys/ToshibaAcpiDriver>.
254 If you have a legacy free Toshiba laptop (such as the Libretto L1
257 config ACPI_CUSTOM_DSDT
258 bool "Include Custom DSDT"
259 depends on !STANDALONE
262 This option is to load a custom ACPI DSDT
263 If you don't know what that is, say N.
265 config ACPI_CUSTOM_DSDT_FILE
266 string "Custom DSDT Table file to include"
267 depends on ACPI_CUSTOM_DSDT
270 Enter the full path name to the file which includes the AmlCode
273 config ACPI_BLACKLIST_YEAR
274 int "Disable ACPI for systems before Jan 1st this year" if X86_32
277 enter a 4-digit year, eg. 2001 to disable ACPI by default
278 on platforms with DMI BIOS date before January 1st that year.
279 "acpi=force" can be used to override this mechanism.
281 Enter 0 to disable this mechanism and allow ACPI to
282 run by default no matter what the year. (default)
285 bool "Debug Statements"
288 The ACPI driver can optionally report errors with a great deal
289 of verbosity. Saying Y enables these statements. This will increase
290 your kernel size by around 50K.
292 config ACPI_DEBUG_FUNC_TRACE
293 bool "Additionally enable ACPI function tracing"
295 depends on ACPI_DEBUG
297 ACPI Debug Statements slow down ACPI processing. Function trace
298 is about half of the penalty and is rarely useful.
304 This driver is required on some systems for the proper operation of
305 the battery and thermal drivers. If you are compiling for a
306 mobile system, say Y.
316 This driver will enable your system to shut down using ACPI, and
317 dump your ACPI DSDT table using /proc/acpi/dsdt.
320 bool "Power Management Timer Support" if EMBEDDED
324 The Power Management Timer is available on all ACPI-capable,
325 in most cases even if ACPI is unusable or blacklisted.
327 This timing source is not affected by power management features
328 like aggressive processor idling, throttling, frequency and/or
329 voltage scaling, unlike the commonly used Time Stamp Counter
332 You should nearly always say Y here because many modern
333 systems require this timer.
335 config ACPI_CONTAINER
336 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
337 depends on EXPERIMENTAL
338 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
340 This allows _physical_ insertion and removal of CPUs and memory.
341 This can be useful, for example, on NUMA machines that support
342 ACPI based physical hotplug of nodes, or non-NUMA machines that
343 support physical cpu/memory hot-plug.
345 If one selects "m", this driver can be loaded with
346 "modprobe acpi_container".
348 config ACPI_HOTPLUG_MEMORY
349 tristate "Memory Hotplug"
350 depends on MEMORY_HOTPLUG
353 This driver adds supports for ACPI Memory Hotplug. This driver
354 provides support for fielding notifications on ACPI memory
355 devices (PNP0C80) which represent memory ranges that may be
356 onlined or offlined during runtime.
358 Enabling this driver assumes that your platform hardware
359 and firmware have support for hot-plugging physical memory. If
360 your system does not support physically adding or ripping out
361 memory DIMMs at some platform defined granularity (individually
362 or as a bank) at runtime, then you need not enable this driver.
364 If one selects "m," this driver can be loaded using the following
366 $>modprobe acpi_memhotplug
369 tristate "Smart Battery System"
373 This driver adds support for the Smart Battery System, another
374 type of access to battery information, found on some laptops.