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>
46 bool "Deprecated /proc/acpi files"
49 For backwards compatibility, this option allows
50 depricated /proc/acpi/ files to exist, even when
51 they have been replaced by functions in /sys.
52 The deprecated files (and their replacements) include:
54 /proc/acpi/sleep (/sys/power/state)
55 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
56 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
57 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
58 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
59 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
61 This option has no effect on /proc/acpi/ files
62 and functions which do not yet exist in /sys.
64 Say N to delete /proc/acpi/ files that have moved to /sys/
71 This driver adds support for the AC Adapter object, which indicates
72 whether a system is on AC, or not. If you have a system that can
73 switch between A/C and battery, say Y.
80 This driver adds support for battery information through
81 /proc/acpi/battery. If you have a mobile system with a battery,
89 This driver handles events on the power, sleep and lid buttons.
90 A daemon reads /proc/acpi/event and perform user-defined actions
91 such as shutting down the system. This is necessary for
92 software controlled poweroff.
96 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
98 This driver implement the ACPI Extensions For Display Adapters
99 for integrated graphics devices on motherboard, as specified in
100 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
101 control like defining the video POST device, retrieving EDID information
102 or to setup a video output, etc.
103 Note that this is an ref. implementation only. It may or may not work
104 for your integrated video device.
110 This driver adds support for ACPI fan devices, allowing user-mode
111 applications to perform basic fan control (on, off, status).
115 depends on EXPERIMENTAL
117 This driver adds support for ACPI controlled docking stations
120 tristate "Removable Drive Bay (EXPERIMENTAL)"
121 depends on EXPERIMENTAL
124 This driver adds support for ACPI controlled removable drive
125 bays such as the IBM ultrabay or the Dell Module Bay.
127 config ACPI_PROCESSOR
131 This driver installs ACPI as the idle handler for Linux, and uses
132 ACPI C2 and C3 processor states to save power, on systems that
133 support it. It is required by several flavors of cpufreq
134 Performance-state drivers.
136 config ACPI_HOTPLUG_CPU
138 depends on ACPI_PROCESSOR && HOTPLUG_CPU
139 select ACPI_CONTAINER
143 tristate "Thermal Zone"
144 depends on ACPI_PROCESSOR
147 This driver adds support for ACPI thermal zones. Most mobile and
148 some desktop systems support ACPI thermal zones. It is HIGHLY
149 recommended that this option be enabled, as your processor(s)
150 may be damaged without it.
155 depends on (X86 || IA64)
156 default y if IA64_GENERIC || IA64_SGI_SN2
159 tristate "ASUS/Medion Laptop Extras"
161 select BACKLIGHT_CLASS_DEVICE
163 This driver provides support for extra features of ACPI-compatible
164 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
165 support some Medion laptops (such as 9675 for example). It makes all
166 the extra buttons generate standard ACPI events that go through
167 /proc/acpi/events, and (on some models) adds support for changing the
168 display brightness and output, switching the LCD backlight on and off,
169 and most importantly, allows you to blink those fancy LEDs intended
170 for reporting mail and wireless status.
172 Note: display switching code is currently considered EXPERIMENTAL,
173 toying with these values may even lock your machine.
175 All settings are changed via /proc/acpi/asus directory entries. Owner
176 and group for these entries can be set with asus_uid and asus_gid
179 More information and a userspace daemon for handling the extra buttons
180 at <http://sourceforge.net/projects/acpi4asus/>.
182 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
183 driver is still under development, so if your laptop is unsupported or
184 something works not quite as expected, please use the mailing list
185 available on the above page (acpi4asus-user@lists.sourceforge.net).
187 NOTE: This driver is deprecated and will probably be removed soon,
188 use asus-laptop instead.
191 tristate "Toshiba Laptop Extras"
193 select BACKLIGHT_CLASS_DEVICE
195 This driver adds support for access to certain system settings
196 on "legacy free" Toshiba laptops. These laptops can be recognized by
197 their lack of a BIOS setup menu and APM support.
199 On these machines, all system configuration is handled through the
200 ACPI. This driver is required for access to controls not covered
201 by the general ACPI drivers, such as LCD brightness, video output,
204 This driver differs from the non-ACPI Toshiba laptop driver (located
205 under "Processor type and features") in several aspects.
206 Configuration is accessed by reading and writing text files in the
207 /proc tree instead of by program interface to /dev. Furthermore, no
208 power management functions are exposed, as those are handled by the
209 general ACPI drivers.
211 More information about this driver is available at
212 <http://memebeam.org/toys/ToshibaAcpiDriver>.
214 If you have a legacy free Toshiba laptop (such as the Libretto L1
217 config ACPI_CUSTOM_DSDT
218 bool "Include Custom DSDT"
219 depends on !STANDALONE
222 This option is to load a custom ACPI DSDT
223 If you don't know what that is, say N.
225 config ACPI_CUSTOM_DSDT_FILE
226 string "Custom DSDT Table file to include"
227 depends on ACPI_CUSTOM_DSDT
230 Enter the full path name to the file which includes the AmlCode
233 config ACPI_BLACKLIST_YEAR
234 int "Disable ACPI for systems before Jan 1st this year" if X86_32
237 enter a 4-digit year, eg. 2001 to disable ACPI by default
238 on platforms with DMI BIOS date before January 1st that year.
239 "acpi=force" can be used to override this mechanism.
241 Enter 0 to disable this mechanism and allow ACPI to
242 run by default no matter what the year. (default)
245 bool "Debug Statements"
248 The ACPI driver can optionally report errors with a great deal
249 of verbosity. Saying Y enables these statements. This will increase
250 your kernel size by around 50K.
252 config ACPI_DEBUG_FUNC_TRACE
253 bool "Additionally enable ACPI function tracing"
255 depends on ACPI_DEBUG
257 ACPI Debug Statements slow down ACPI processing. Function trace
258 is about half of the penalty and is rarely useful.
264 This driver is required on some systems for the proper operation of
265 the battery and thermal drivers. If you are compiling for a
266 mobile system, say Y.
276 This driver will enable your system to shut down using ACPI, and
277 dump your ACPI DSDT table using /proc/acpi/dsdt.
280 bool "Power Management Timer Support" if EMBEDDED
284 The Power Management Timer is available on all ACPI-capable,
285 in most cases even if ACPI is unusable or blacklisted.
287 This timing source is not affected by power management features
288 like aggressive processor idling, throttling, frequency and/or
289 voltage scaling, unlike the commonly used Time Stamp Counter
292 You should nearly always say Y here because many modern
293 systems require this timer.
295 config ACPI_CONTAINER
296 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
297 depends on EXPERIMENTAL
298 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
300 This allows _physical_ insertion and removal of CPUs and memory.
301 This can be useful, for example, on NUMA machines that support
302 ACPI based physical hotplug of nodes, or non-NUMA machines that
303 support physical cpu/memory hot-plug.
305 If one selects "m", this driver can be loaded with
306 "modprobe acpi_container".
308 config ACPI_HOTPLUG_MEMORY
309 tristate "Memory Hotplug"
310 depends on MEMORY_HOTPLUG
313 This driver adds supports for ACPI Memory Hotplug. This driver
314 provides support for fielding notifications on ACPI memory
315 devices (PNP0C80) which represent memory ranges that may be
316 onlined or offlined during runtime.
318 Enabling this driver assumes that your platform hardware
319 and firmware have support for hot-plugging physical memory. If
320 your system does not support physically adding or ripping out
321 memory DIMMs at some platform defined granularity (individually
322 or as a bank) at runtime, then you need not enable this driver.
324 If one selects "m," this driver can be loaded using the following
326 $>modprobe acpi_memhotplug
329 tristate "Smart Battery System (EXPERIMENTAL)"
331 depends on EXPERIMENTAL
333 This driver adds support for the Smart Battery System.
334 A "Smart Battery" is quite old and quite rare compared
335 to today's ACPI "Control Method" battery.