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56 they have been replaced by functions in /sys.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/
71 config ACPI_PROC_EVENT
72 bool "Deprecated /proc/acpi/event support"
76 A user-space daemon, acpi, typically read /proc/acpi/event
77 and handled all ACPI sub-system generated events.
79 These events are now delivered to user-space via
80 either the input layer, or as netlink events.
82 This build option enables the old code for legacy
83 user-space implementation. After some time, this will
84 be moved under CONFIG_ACPI_PROCFS, and then deleted.
86 Say Y here to retain the old behaviour. Say N if your
87 user-space is newer than kernel 2.6.23 (September 2007).
94 This driver adds support for the AC Adapter object, which indicates
95 whether a system is on AC, or not. If you have a system that can
96 switch between A/C and battery, say Y.
100 depends on X86 && POWER_SUPPLY
103 This driver adds support for battery information through
104 /proc/acpi/battery. If you have a mobile system with a battery,
112 This driver handles events on the power, sleep and lid buttons.
113 A daemon reads /proc/acpi/event and perform user-defined actions
114 such as shutting down the system. This is necessary for
115 software controlled poweroff.
119 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
121 This driver implement the ACPI Extensions For Display Adapters
122 for integrated graphics devices on motherboard, as specified in
123 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
124 control like defining the video POST device, retrieving EDID information
125 or to setup a video output, etc.
126 Note that this is an ref. implementation only. It may or may not work
127 for your integrated video device.
133 This driver adds support for ACPI fan devices, allowing user-mode
134 applications to perform basic fan control (on, off, status).
138 depends on EXPERIMENTAL
140 This driver adds support for ACPI controlled docking stations
143 tristate "Removable Drive Bay (EXPERIMENTAL)"
144 depends on EXPERIMENTAL
147 This driver adds support for ACPI controlled removable drive
148 bays such as the IBM ultrabay or the Dell Module Bay.
150 config ACPI_PROCESSOR
154 This driver installs ACPI as the idle handler for Linux, and uses
155 ACPI C2 and C3 processor states to save power, on systems that
156 support it. It is required by several flavors of cpufreq
157 Performance-state drivers.
159 config ACPI_HOTPLUG_CPU
161 depends on ACPI_PROCESSOR && HOTPLUG_CPU
162 select ACPI_CONTAINER
166 tristate "Thermal Zone"
167 depends on ACPI_PROCESSOR
170 This driver adds support for ACPI thermal zones. Most mobile and
171 some desktop systems support ACPI thermal zones. It is HIGHLY
172 recommended that this option be enabled, as your processor(s)
173 may be damaged without it.
178 depends on (X86 || IA64)
179 default y if IA64_GENERIC || IA64_SGI_SN2
182 tristate "ASUS/Medion Laptop Extras"
184 select BACKLIGHT_CLASS_DEVICE
186 This driver provides support for extra features of ACPI-compatible
187 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
188 support some Medion laptops (such as 9675 for example). It makes all
189 the extra buttons generate standard ACPI events that go through
190 /proc/acpi/events, and (on some models) adds support for changing the
191 display brightness and output, switching the LCD backlight on and off,
192 and most importantly, allows you to blink those fancy LEDs intended
193 for reporting mail and wireless status.
195 Note: display switching code is currently considered EXPERIMENTAL,
196 toying with these values may even lock your machine.
198 All settings are changed via /proc/acpi/asus directory entries. Owner
199 and group for these entries can be set with asus_uid and asus_gid
202 More information and a userspace daemon for handling the extra buttons
203 at <http://sourceforge.net/projects/acpi4asus/>.
205 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
206 driver is still under development, so if your laptop is unsupported or
207 something works not quite as expected, please use the mailing list
208 available on the above page (acpi4asus-user@lists.sourceforge.net).
210 NOTE: This driver is deprecated and will probably be removed soon,
211 use asus-laptop instead.
214 tristate "Toshiba Laptop Extras"
216 select BACKLIGHT_CLASS_DEVICE
218 This driver adds support for access to certain system settings
219 on "legacy free" Toshiba laptops. These laptops can be recognized by
220 their lack of a BIOS setup menu and APM support.
222 On these machines, all system configuration is handled through the
223 ACPI. This driver is required for access to controls not covered
224 by the general ACPI drivers, such as LCD brightness, video output,
227 This driver differs from the non-ACPI Toshiba laptop driver (located
228 under "Processor type and features") in several aspects.
229 Configuration is accessed by reading and writing text files in the
230 /proc tree instead of by program interface to /dev. Furthermore, no
231 power management functions are exposed, as those are handled by the
232 general ACPI drivers.
234 More information about this driver is available at
235 <http://memebeam.org/toys/ToshibaAcpiDriver>.
237 If you have a legacy free Toshiba laptop (such as the Libretto L1
240 config ACPI_CUSTOM_DSDT
241 bool "Include Custom DSDT"
242 depends on !STANDALONE
245 This option is to load a custom ACPI DSDT
246 If you don't know what that is, say N.
248 config ACPI_CUSTOM_DSDT_FILE
249 string "Custom DSDT Table file to include"
250 depends on ACPI_CUSTOM_DSDT
253 Enter the full path name to the file which includes the AmlCode
256 config ACPI_BLACKLIST_YEAR
257 int "Disable ACPI for systems before Jan 1st this year" if X86_32
260 enter a 4-digit year, eg. 2001 to disable ACPI by default
261 on platforms with DMI BIOS date before January 1st that year.
262 "acpi=force" can be used to override this mechanism.
264 Enter 0 to disable this mechanism and allow ACPI to
265 run by default no matter what the year. (default)
268 bool "Debug Statements"
271 The ACPI driver can optionally report errors with a great deal
272 of verbosity. Saying Y enables these statements. This will increase
273 your kernel size by around 50K.
275 config ACPI_DEBUG_FUNC_TRACE
276 bool "Additionally enable ACPI function tracing"
278 depends on ACPI_DEBUG
280 ACPI Debug Statements slow down ACPI processing. Function trace
281 is about half of the penalty and is rarely useful.
287 This driver is required on some systems for the proper operation of
288 the battery and thermal drivers. If you are compiling for a
289 mobile system, say Y.
299 This driver will enable your system to shut down using ACPI, and
300 dump your ACPI DSDT table using /proc/acpi/dsdt.
303 bool "Power Management Timer Support" if EMBEDDED
307 The Power Management Timer is available on all ACPI-capable,
308 in most cases even if ACPI is unusable or blacklisted.
310 This timing source is not affected by power management features
311 like aggressive processor idling, throttling, frequency and/or
312 voltage scaling, unlike the commonly used Time Stamp Counter
315 You should nearly always say Y here because many modern
316 systems require this timer.
318 config ACPI_CONTAINER
319 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
320 depends on EXPERIMENTAL
321 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
323 This allows _physical_ insertion and removal of CPUs and memory.
324 This can be useful, for example, on NUMA machines that support
325 ACPI based physical hotplug of nodes, or non-NUMA machines that
326 support physical cpu/memory hot-plug.
328 If one selects "m", this driver can be loaded with
329 "modprobe acpi_container".
331 config ACPI_HOTPLUG_MEMORY
332 tristate "Memory Hotplug"
333 depends on MEMORY_HOTPLUG
336 This driver adds supports for ACPI Memory Hotplug. This driver
337 provides support for fielding notifications on ACPI memory
338 devices (PNP0C80) which represent memory ranges that may be
339 onlined or offlined during runtime.
341 Enabling this driver assumes that your platform hardware
342 and firmware have support for hot-plugging physical memory. If
343 your system does not support physically adding or ripping out
344 memory DIMMs at some platform defined granularity (individually
345 or as a bank) at runtime, then you need not enable this driver.
347 If one selects "m," this driver can be loaded using the following
349 $>modprobe acpi_memhotplug
352 tristate "Smart Battery System"
354 depends on POWER_SUPPLY
356 This driver adds support for the Smart Battery System, another
357 type of access to battery information, found on some laptops.