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58 they have been replaced by functions in /sys.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