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57 they have been replaced by functions in /sys.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