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>
47 depends on X86 && (!SMP || SUSPEND_SMP)
50 This option adds support for ACPI suspend states.
52 With this option, you will be able to put the system "to sleep".
53 Sleep states are low power states for the system and devices. All
54 of the system operating state is saved to either memory or disk
55 (depending on the state), to allow the system to resume operation
56 quickly at your request.
58 Although this option sounds really nifty, barely any of the device
59 drivers have been converted to the new driver model and hence few
60 have proper power management support.
62 This option is not recommended for anyone except those doing driver
63 power management development.
65 config ACPI_SLEEP_PROC_FS
67 depends on ACPI_SLEEP && PROC_FS
70 config ACPI_SLEEP_PROC_SLEEP
71 bool "/proc/acpi/sleep (deprecated)"
72 depends on ACPI_SLEEP_PROC_FS
75 Create /proc/acpi/sleep
76 Deprecated by /sys/power/state
79 bool "Procfs interface (deprecated)"
82 The Procfs interface for ACPI is made optional for backward compatibility.
83 As the same functions are duplicated in the sysfs interface
84 and this proc interface will be removed some time later,
85 it's marked as deprecated.
86 ( /proc/acpi/debug_layer && debug_level are deprecated by
87 /sys/module/acpi/parameters/debug_layer && debug_level.
88 /proc/acpi/info is deprecated by
89 /sys/module/acpi/parameters/acpica_version )
96 This driver adds support for the AC Adapter object, which indicates
97 whether a system is on AC, or not. If you have a system that can
98 switch between A/C and battery, say Y.
105 This driver adds support for battery information through
106 /proc/acpi/battery. If you have a mobile system with a battery,
114 This driver handles events on the power, sleep and lid buttons.
115 A daemon reads /proc/acpi/event and perform user-defined actions
116 such as shutting down the system. This is necessary for
117 software controlled poweroff.
121 depends on X86 && BACKLIGHT_CLASS_DEVICE
123 This driver implement the ACPI Extensions For Display Adapters
124 for integrated graphics devices on motherboard, as specified in
125 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
126 control like defining the video POST device, retrieving EDID information
127 or to setup a video output, etc.
128 Note that this is an ref. implementation only. It may or may not work
129 for your integrated video device.
135 This driver adds support for ACPI fan devices, allowing user-mode
136 applications to perform basic fan control (on, off, status).
140 depends on EXPERIMENTAL
142 This driver adds support for ACPI controlled docking stations
145 tristate "Removable Drive Bay (EXPERIMENTAL)"
146 depends on EXPERIMENTAL
149 This driver adds support for ACPI controlled removable drive
150 bays such as the IBM ultrabay or the Dell Module Bay.
152 config ACPI_PROCESSOR
156 This driver installs ACPI as the idle handler for Linux, and uses
157 ACPI C2 and C3 processor states to save power, on systems that
158 support it. It is required by several flavors of cpufreq
159 Performance-state drivers.
161 config ACPI_HOTPLUG_CPU
163 depends on ACPI_PROCESSOR && HOTPLUG_CPU
164 select ACPI_CONTAINER
168 tristate "Thermal Zone"
169 depends on ACPI_PROCESSOR
172 This driver adds support for ACPI thermal zones. Most mobile and
173 some desktop systems support ACPI thermal zones. It is HIGHLY
174 recommended that this option be enabled, as your processor(s)
175 may be damaged without it.
180 depends on (X86 || IA64)
181 default y if IA64_GENERIC || IA64_SGI_SN2
184 tristate "ASUS/Medion Laptop Extras"
186 select BACKLIGHT_CLASS_DEVICE
188 This driver provides support for extra features of ACPI-compatible
189 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
190 support some Medion laptops (such as 9675 for example). It makes all
191 the extra buttons generate standard ACPI events that go through
192 /proc/acpi/events, and (on some models) adds support for changing the
193 display brightness and output, switching the LCD backlight on and off,
194 and most importantly, allows you to blink those fancy LEDs intended
195 for reporting mail and wireless status.
197 Note: display switching code is currently considered EXPERIMENTAL,
198 toying with these values may even lock your machine.
200 All settings are changed via /proc/acpi/asus directory entries. Owner
201 and group for these entries can be set with asus_uid and asus_gid
204 More information and a userspace daemon for handling the extra buttons
205 at <http://sourceforge.net/projects/acpi4asus/>.
207 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
208 driver is still under development, so if your laptop is unsupported or
209 something works not quite as expected, please use the mailing list
210 available on the above page (acpi4asus-user@lists.sourceforge.net).
212 NOTE: This driver is deprecated and will probably be removed soon,
213 use asus-laptop instead.
216 tristate "Toshiba Laptop Extras"
218 select BACKLIGHT_CLASS_DEVICE
220 This driver adds support for access to certain system settings
221 on "legacy free" Toshiba laptops. These laptops can be recognized by
222 their lack of a BIOS setup menu and APM support.
224 On these machines, all system configuration is handled through the
225 ACPI. This driver is required for access to controls not covered
226 by the general ACPI drivers, such as LCD brightness, video output,
229 This driver differs from the non-ACPI Toshiba laptop driver (located
230 under "Processor type and features") in several aspects.
231 Configuration is accessed by reading and writing text files in the
232 /proc tree instead of by program interface to /dev. Furthermore, no
233 power management functions are exposed, as those are handled by the
234 general ACPI drivers.
236 More information about this driver is available at
237 <http://memebeam.org/toys/ToshibaAcpiDriver>.
239 If you have a legacy free Toshiba laptop (such as the Libretto L1
242 config ACPI_CUSTOM_DSDT
243 bool "Include Custom DSDT"
244 depends on !STANDALONE
247 This option is to load a custom ACPI DSDT
248 If you don't know what that is, say N.
250 config ACPI_CUSTOM_DSDT_FILE
251 string "Custom DSDT Table file to include"
252 depends on ACPI_CUSTOM_DSDT
255 Enter the full path name to the file which includes the AmlCode
258 config ACPI_BLACKLIST_YEAR
259 int "Disable ACPI for systems before Jan 1st this year" if X86_32
262 enter a 4-digit year, eg. 2001 to disable ACPI by default
263 on platforms with DMI BIOS date before January 1st that year.
264 "acpi=force" can be used to override this mechanism.
266 Enter 0 to disable this mechanism and allow ACPI to
267 run by default no matter what the year. (default)
270 bool "Debug Statements"
273 The ACPI driver can optionally report errors with a great deal
274 of verbosity. Saying Y enables these statements. This will increase
275 your kernel size by around 50K.
277 config ACPI_DEBUG_FUNC_TRACE
278 bool "Additionally enable ACPI function tracing"
280 depends on ACPI_DEBUG
282 ACPI Debug Statements slow down ACPI processing. Function trace
283 is about half of the penalty and is rarely useful.
289 This driver is required on some systems for the proper operation of
290 the battery and thermal drivers. If you are compiling for a
291 mobile system, say Y.
301 This driver will enable your system to shut down using ACPI, and
302 dump your ACPI DSDT table using /proc/acpi/dsdt.
305 bool "Power Management Timer Support" if EMBEDDED
309 The Power Management Timer is available on all ACPI-capable,
310 in most cases even if ACPI is unusable or blacklisted.
312 This timing source is not affected by power management features
313 like aggressive processor idling, throttling, frequency and/or
314 voltage scaling, unlike the commonly used Time Stamp Counter
317 You should nearly always say Y here because many modern
318 systems require this timer.
320 config ACPI_CONTAINER
321 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
322 depends on EXPERIMENTAL
323 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
325 This allows _physical_ insertion and removal of CPUs and memory.
326 This can be useful, for example, on NUMA machines that support
327 ACPI based physical hotplug of nodes, or non-NUMA machines that
328 support physical cpu/memory hot-plug.
330 If one selects "m", this driver can be loaded with
331 "modprobe acpi_container".
333 config ACPI_HOTPLUG_MEMORY
334 tristate "Memory Hotplug"
335 depends on MEMORY_HOTPLUG
338 This driver adds supports for ACPI Memory Hotplug. This driver
339 provides support for fielding notifications on ACPI memory
340 devices (PNP0C80) which represent memory ranges that may be
341 onlined or offlined during runtime.
343 Enabling this driver assumes that your platform hardware
344 and firmware have support for hot-plugging physical memory. If
345 your system does not support physically adding or ripping out
346 memory DIMMs at some platform defined granularity (individually
347 or as a bank) at runtime, then you need not enable this driver.
349 If one selects "m," this driver can be loaded using the following
351 $>modprobe acpi_memhotplug
354 tristate "Smart Battery System (EXPERIMENTAL)"
356 depends on EXPERIMENTAL
358 This driver adds support for the Smart Battery System.
359 A "Smart Battery" is quite old and quite rare compared
360 to today's ACPI "Control Method" battery.