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56 they have been replaced by functions in /sys.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/
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).
91 depends on X86 && POWER_SUPPLY
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
122 This driver implement the ACPI Extensions For Display Adapters
123 for integrated graphics devices on motherboard, as specified in
124 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
125 control like defining the video POST device, retrieving EDID information
126 or to setup a video output, etc.
127 Note that this is an ref. implementation only. It may or may not work
128 for your integrated video device.
134 This driver adds support for ACPI fan devices, allowing user-mode
135 applications to perform basic fan control (on, off, status).
139 depends on EXPERIMENTAL
141 This driver adds support for ACPI controlled docking stations
144 tristate "Removable Drive Bay (EXPERIMENTAL)"
145 depends on EXPERIMENTAL
148 This driver adds support for ACPI controlled removable drive
149 bays such as the IBM ultrabay or the Dell Module Bay.
151 config ACPI_PROCESSOR
155 This driver installs ACPI as the idle handler for Linux, and uses
156 ACPI C2 and C3 processor states to save power, on systems that
157 support it. It is required by several flavors of cpufreq
158 Performance-state drivers.
160 config ACPI_HOTPLUG_CPU
162 depends on ACPI_PROCESSOR && HOTPLUG_CPU
163 select ACPI_CONTAINER
167 tristate "Thermal Zone"
168 depends on ACPI_PROCESSOR
171 This driver adds support for ACPI thermal zones. Most mobile and
172 some desktop systems support ACPI thermal zones. It is HIGHLY
173 recommended that this option be enabled, as your processor(s)
174 may be damaged without it.
179 depends on (X86 || IA64)
180 default y if IA64_GENERIC || IA64_SGI_SN2
183 tristate "ASUS/Medion Laptop Extras"
185 select BACKLIGHT_CLASS_DEVICE
187 This driver provides support for extra features of ACPI-compatible
188 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
189 support some Medion laptops (such as 9675 for example). It makes all
190 the extra buttons generate standard ACPI events that go through
191 /proc/acpi/events, and (on some models) adds support for changing the
192 display brightness and output, switching the LCD backlight on and off,
193 and most importantly, allows you to blink those fancy LEDs intended
194 for reporting mail and wireless status.
196 Note: display switching code is currently considered EXPERIMENTAL,
197 toying with these values may even lock your machine.
199 All settings are changed via /proc/acpi/asus directory entries. Owner
200 and group for these entries can be set with asus_uid and asus_gid
203 More information and a userspace daemon for handling the extra buttons
204 at <http://sourceforge.net/projects/acpi4asus/>.
206 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
207 driver is still under development, so if your laptop is unsupported or
208 something works not quite as expected, please use the mailing list
209 available on the above page (acpi4asus-user@lists.sourceforge.net).
211 NOTE: This driver is deprecated and will probably be removed soon,
212 use asus-laptop instead.
215 tristate "Toshiba Laptop Extras"
217 select BACKLIGHT_CLASS_DEVICE
219 This driver adds support for access to certain system settings
220 on "legacy free" Toshiba laptops. These laptops can be recognized by
221 their lack of a BIOS setup menu and APM support.
223 On these machines, all system configuration is handled through the
224 ACPI. This driver is required for access to controls not covered
225 by the general ACPI drivers, such as LCD brightness, video output,
228 This driver differs from the non-ACPI Toshiba laptop driver (located
229 under "Processor type and features") in several aspects.
230 Configuration is accessed by reading and writing text files in the
231 /proc tree instead of by program interface to /dev. Furthermore, no
232 power management functions are exposed, as those are handled by the
233 general ACPI drivers.
235 More information about this driver is available at
236 <http://memebeam.org/toys/ToshibaAcpiDriver>.
238 If you have a legacy free Toshiba laptop (such as the Libretto L1
241 config ACPI_CUSTOM_DSDT
242 bool "Include Custom DSDT"
243 depends on !STANDALONE
246 This option is to load a custom ACPI DSDT
247 If you don't know what that is, say N.
249 config ACPI_CUSTOM_DSDT_FILE
250 string "Custom DSDT Table file to include"
251 depends on ACPI_CUSTOM_DSDT
254 Enter the full path name to the file which includes the AmlCode
257 config ACPI_BLACKLIST_YEAR
258 int "Disable ACPI for systems before Jan 1st this year" if X86_32
261 enter a 4-digit year, eg. 2001 to disable ACPI by default
262 on platforms with DMI BIOS date before January 1st that year.
263 "acpi=force" can be used to override this mechanism.
265 Enter 0 to disable this mechanism and allow ACPI to
266 run by default no matter what the year. (default)
269 bool "Debug Statements"
272 The ACPI driver can optionally report errors with a great deal
273 of verbosity. Saying Y enables these statements. This will increase
274 your kernel size by around 50K.
276 config ACPI_DEBUG_FUNC_TRACE
277 bool "Additionally enable ACPI function tracing"
279 depends on ACPI_DEBUG
281 ACPI Debug Statements slow down ACPI processing. Function trace
282 is about half of the penalty and is rarely useful.
288 This driver is required on some systems for the proper operation of
289 the battery and thermal drivers. If you are compiling for a
290 mobile system, say Y.
300 This driver will enable your system to shut down using ACPI, and
301 dump your ACPI DSDT table using /proc/acpi/dsdt.
304 bool "Power Management Timer Support" if EMBEDDED
308 The Power Management Timer is available on all ACPI-capable,
309 in most cases even if ACPI is unusable or blacklisted.
311 This timing source is not affected by power management features
312 like aggressive processor idling, throttling, frequency and/or
313 voltage scaling, unlike the commonly used Time Stamp Counter
316 You should nearly always say Y here because many modern
317 systems require this timer.
319 config ACPI_CONTAINER
320 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
321 depends on EXPERIMENTAL
322 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
324 This allows _physical_ insertion and removal of CPUs and memory.
325 This can be useful, for example, on NUMA machines that support
326 ACPI based physical hotplug of nodes, or non-NUMA machines that
327 support physical cpu/memory hot-plug.
329 If one selects "m", this driver can be loaded with
330 "modprobe acpi_container".
332 config ACPI_HOTPLUG_MEMORY
333 tristate "Memory Hotplug"
334 depends on MEMORY_HOTPLUG
337 This driver adds supports for ACPI Memory Hotplug. This driver
338 provides support for fielding notifications on ACPI memory
339 devices (PNP0C80) which represent memory ranges that may be
340 onlined or offlined during runtime.
342 Enabling this driver assumes that your platform hardware
343 and firmware have support for hot-plugging physical memory. If
344 your system does not support physically adding or ripping out
345 memory DIMMs at some platform defined granularity (individually
346 or as a bank) at runtime, then you need not enable this driver.
348 If one selects "m," this driver can be loaded using the following
350 $>modprobe acpi_memhotplug
353 tristate "Smart Battery System"
355 depends on POWER_SUPPLY
357 This driver adds support for the Smart Battery System, another
358 type of access to battery information, found on some laptops.