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.
66 bool "Deprecated /proc/acpi files"
69 For backwards compatibility, this option allows
70 depricated /proc/acpi/ files to exist, even when
71 they have been replaced by functions in /sys.
72 The deprecated files (and their replacements) include:
74 /proc/acpi/sleep (/sys/power/state)
75 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
76 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
77 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
78 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
79 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
81 This option has no effect on /proc/acpi/ files
82 and functions which do not yet exist in /sys.
84 Say N to delete /proc/acpi/ files that have moved to /sys/
91 This driver adds support for the AC Adapter object, which indicates
92 whether a system is on AC, or not. If you have a system that can
93 switch between A/C and battery, say Y.
100 This driver adds support for battery information through
101 /proc/acpi/battery. If you have a mobile system with a battery,
109 This driver handles events on the power, sleep and lid buttons.
110 A daemon reads /proc/acpi/event and perform user-defined actions
111 such as shutting down the system. This is necessary for
112 software controlled poweroff.
116 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
118 This driver implement the ACPI Extensions For Display Adapters
119 for integrated graphics devices on motherboard, as specified in
120 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
121 control like defining the video POST device, retrieving EDID information
122 or to setup a video output, etc.
123 Note that this is an ref. implementation only. It may or may not work
124 for your integrated video device.
130 This driver adds support for ACPI fan devices, allowing user-mode
131 applications to perform basic fan control (on, off, status).
135 depends on EXPERIMENTAL
137 This driver adds support for ACPI controlled docking stations
140 tristate "Removable Drive Bay (EXPERIMENTAL)"
141 depends on EXPERIMENTAL
144 This driver adds support for ACPI controlled removable drive
145 bays such as the IBM ultrabay or the Dell Module Bay.
147 config ACPI_PROCESSOR
151 This driver installs ACPI as the idle handler for Linux, and uses
152 ACPI C2 and C3 processor states to save power, on systems that
153 support it. It is required by several flavors of cpufreq
154 Performance-state drivers.
156 config ACPI_HOTPLUG_CPU
158 depends on ACPI_PROCESSOR && HOTPLUG_CPU
159 select ACPI_CONTAINER
163 tristate "Thermal Zone"
164 depends on ACPI_PROCESSOR
167 This driver adds support for ACPI thermal zones. Most mobile and
168 some desktop systems support ACPI thermal zones. It is HIGHLY
169 recommended that this option be enabled, as your processor(s)
170 may be damaged without it.
175 depends on (X86 || IA64)
176 default y if IA64_GENERIC || IA64_SGI_SN2
179 tristate "ASUS/Medion Laptop Extras"
181 select BACKLIGHT_CLASS_DEVICE
183 This driver provides support for extra features of ACPI-compatible
184 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
185 support some Medion laptops (such as 9675 for example). It makes all
186 the extra buttons generate standard ACPI events that go through
187 /proc/acpi/events, and (on some models) adds support for changing the
188 display brightness and output, switching the LCD backlight on and off,
189 and most importantly, allows you to blink those fancy LEDs intended
190 for reporting mail and wireless status.
192 Note: display switching code is currently considered EXPERIMENTAL,
193 toying with these values may even lock your machine.
195 All settings are changed via /proc/acpi/asus directory entries. Owner
196 and group for these entries can be set with asus_uid and asus_gid
199 More information and a userspace daemon for handling the extra buttons
200 at <http://sourceforge.net/projects/acpi4asus/>.
202 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
203 driver is still under development, so if your laptop is unsupported or
204 something works not quite as expected, please use the mailing list
205 available on the above page (acpi4asus-user@lists.sourceforge.net).
207 NOTE: This driver is deprecated and will probably be removed soon,
208 use asus-laptop instead.
211 tristate "Toshiba Laptop Extras"
213 select BACKLIGHT_CLASS_DEVICE
215 This driver adds support for access to certain system settings
216 on "legacy free" Toshiba laptops. These laptops can be recognized by
217 their lack of a BIOS setup menu and APM support.
219 On these machines, all system configuration is handled through the
220 ACPI. This driver is required for access to controls not covered
221 by the general ACPI drivers, such as LCD brightness, video output,
224 This driver differs from the non-ACPI Toshiba laptop driver (located
225 under "Processor type and features") in several aspects.
226 Configuration is accessed by reading and writing text files in the
227 /proc tree instead of by program interface to /dev. Furthermore, no
228 power management functions are exposed, as those are handled by the
229 general ACPI drivers.
231 More information about this driver is available at
232 <http://memebeam.org/toys/ToshibaAcpiDriver>.
234 If you have a legacy free Toshiba laptop (such as the Libretto L1
237 config ACPI_CUSTOM_DSDT
238 bool "Include Custom DSDT"
239 depends on !STANDALONE
242 This option is to load a custom ACPI DSDT
243 If you don't know what that is, say N.
245 config ACPI_CUSTOM_DSDT_FILE
246 string "Custom DSDT Table file to include"
247 depends on ACPI_CUSTOM_DSDT
250 Enter the full path name to the file which includes the AmlCode
253 config ACPI_BLACKLIST_YEAR
254 int "Disable ACPI for systems before Jan 1st this year" if X86_32
257 enter a 4-digit year, eg. 2001 to disable ACPI by default
258 on platforms with DMI BIOS date before January 1st that year.
259 "acpi=force" can be used to override this mechanism.
261 Enter 0 to disable this mechanism and allow ACPI to
262 run by default no matter what the year. (default)
265 bool "Debug Statements"
268 The ACPI driver can optionally report errors with a great deal
269 of verbosity. Saying Y enables these statements. This will increase
270 your kernel size by around 50K.
272 config ACPI_DEBUG_FUNC_TRACE
273 bool "Additionally enable ACPI function tracing"
275 depends on ACPI_DEBUG
277 ACPI Debug Statements slow down ACPI processing. Function trace
278 is about half of the penalty and is rarely useful.
284 This driver is required on some systems for the proper operation of
285 the battery and thermal drivers. If you are compiling for a
286 mobile system, say Y.
296 This driver will enable your system to shut down using ACPI, and
297 dump your ACPI DSDT table using /proc/acpi/dsdt.
300 bool "Power Management Timer Support" if EMBEDDED
304 The Power Management Timer is available on all ACPI-capable,
305 in most cases even if ACPI is unusable or blacklisted.
307 This timing source is not affected by power management features
308 like aggressive processor idling, throttling, frequency and/or
309 voltage scaling, unlike the commonly used Time Stamp Counter
312 You should nearly always say Y here because many modern
313 systems require this timer.
315 config ACPI_CONTAINER
316 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
317 depends on EXPERIMENTAL
318 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
320 This allows _physical_ insertion and removal of CPUs and memory.
321 This can be useful, for example, on NUMA machines that support
322 ACPI based physical hotplug of nodes, or non-NUMA machines that
323 support physical cpu/memory hot-plug.
325 If one selects "m", this driver can be loaded with
326 "modprobe acpi_container".
328 config ACPI_HOTPLUG_MEMORY
329 tristate "Memory Hotplug"
330 depends on MEMORY_HOTPLUG
333 This driver adds supports for ACPI Memory Hotplug. This driver
334 provides support for fielding notifications on ACPI memory
335 devices (PNP0C80) which represent memory ranges that may be
336 onlined or offlined during runtime.
338 Enabling this driver assumes that your platform hardware
339 and firmware have support for hot-plugging physical memory. If
340 your system does not support physically adding or ripping out
341 memory DIMMs at some platform defined granularity (individually
342 or as a bank) at runtime, then you need not enable this driver.
344 If one selects "m," this driver can be loaded using the following
346 $>modprobe acpi_memhotplug
349 tristate "Smart Battery System (EXPERIMENTAL)"
351 depends on EXPERIMENTAL
353 This driver adds support for the Smart Battery System.
354 A "Smart Battery" is quite old and quite rare compared
355 to today's ACPI "Control Method" battery.