V4L/DVB (8946): dib7000m: fix powerpc build error
[deliverable/linux.git] / drivers / acpi / Kconfig
1 #
2 # ACPI Configuration
3 #
4
5 menuconfig ACPI
6 bool "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
8 depends on IA64 || X86
9 depends on PCI
10 depends on PM
11 select PNP
12 default y
13 ---help---
14 Advanced Configuration and Power Interface (ACPI) support for
15 Linux requires an ACPI compliant platform (hardware/firmware),
16 and assumes the presence of OS-directed configuration and power
17 management (OSPM) software. This option will enlarge your
18 kernel by about 70K.
19
20 Linux ACPI provides a robust functional replacement for several
21 legacy configuration and power management interfaces, including
22 the Plug-and-Play BIOS specification (PnP BIOS), the
23 MultiProcessor Specification (MPS), and the Advanced Power
24 Management (APM) specification. If both ACPI and APM support
25 are configured, whichever is loaded first shall be used.
26
27 The ACPI SourceForge project contains the latest source code,
28 documentation, tools, mailing list subscription, and other
29 information. This project is available at:
30 <http://sourceforge.net/projects/acpi>
31
32 Linux support for ACPI is based on Intel Corporation's ACPI
33 Component Architecture (ACPI CA). For more information see:
34 <http://developer.intel.com/technology/iapc/acpi>
35
36 ACPI is an open industry specification co-developed by Compaq,
37 Intel, Microsoft, Phoenix, and Toshiba. The specification is
38 available at:
39 <http://www.acpi.info>
40
41 if ACPI
42
43 config ACPI_SLEEP
44 bool
45 depends on PM_SLEEP
46 default y
47
48 config ACPI_PROCFS
49 bool "Deprecated /proc/acpi files"
50 depends on PROC_FS
51 ---help---
52 For backwards compatibility, this option allows
53 deprecated /proc/acpi/ files to exist, even when
54 they have been replaced by functions in /sys.
55 The deprecated files (and their replacements) include:
56
57 /proc/acpi/sleep (/sys/power/state)
58 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
59 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
63
64 This option has no effect on /proc/acpi/ files
65 and functions which do not yet exist in /sys.
66
67 Say N to delete /proc/acpi/ files that have moved to /sys/
68 config ACPI_PROCFS_POWER
69 bool "Deprecated power /proc/acpi directories"
70 depends on PROC_FS
71 default y
72 ---help---
73 For backwards compatibility, this option allows
74 deprecated power /proc/acpi/ directories to exist, even when
75 they have been replaced by functions in /sys.
76 The deprecated directories (and their replacements) include:
77 /proc/acpi/battery/* (/sys/class/power_supply/*)
78 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
79 This option has no effect on /proc/acpi/ directories
80 and functions, which do not yet exist in /sys
81
82 Say N to delete power /proc/acpi/ directories that have moved to /sys/
83
84 config ACPI_SYSFS_POWER
85 bool "Future power /sys interface"
86 select POWER_SUPPLY
87 default y
88 ---help---
89 Say N to disable power /sys interface
90
91 config ACPI_PROC_EVENT
92 bool "Deprecated /proc/acpi/event support"
93 depends on PROC_FS
94 default y
95 ---help---
96 A user-space daemon, acpi, typically read /proc/acpi/event
97 and handled all ACPI sub-system generated events.
98
99 These events are now delivered to user-space via
100 either the input layer, or as netlink events.
101
102 This build option enables the old code for legacy
103 user-space implementation. After some time, this will
104 be moved under CONFIG_ACPI_PROCFS, and then deleted.
105
106 Say Y here to retain the old behaviour. Say N if your
107 user-space is newer than kernel 2.6.23 (September 2007).
108
109 config ACPI_AC
110 tristate "AC Adapter"
111 depends on X86
112 default y
113 help
114 This driver adds support for the AC Adapter object, which indicates
115 whether a system is on AC, or not. If you have a system that can
116 switch between A/C and battery, say Y.
117
118 config ACPI_BATTERY
119 tristate "Battery"
120 depends on X86
121 default y
122 help
123 This driver adds support for battery information through
124 /proc/acpi/battery. If you have a mobile system with a battery,
125 say Y.
126
127 config ACPI_BUTTON
128 tristate "Button"
129 depends on INPUT
130 default y
131 help
132 This driver handles events on the power, sleep and lid buttons.
133 A daemon reads /proc/acpi/event and perform user-defined actions
134 such as shutting down the system. This is necessary for
135 software controlled poweroff.
136
137 config ACPI_VIDEO
138 tristate "Video"
139 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
140 depends on INPUT
141 select THERMAL
142 help
143 This driver implement the ACPI Extensions For Display Adapters
144 for integrated graphics devices on motherboard, as specified in
145 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
146 control like defining the video POST device, retrieving EDID information
147 or to setup a video output, etc.
148 Note that this is an ref. implementation only. It may or may not work
149 for your integrated video device.
150
151 config ACPI_FAN
152 tristate "Fan"
153 select THERMAL
154 default y
155 help
156 This driver adds support for ACPI fan devices, allowing user-mode
157 applications to perform basic fan control (on, off, status).
158
159 config ACPI_DOCK
160 tristate "Dock"
161 depends on EXPERIMENTAL
162 help
163 This driver adds support for ACPI controlled docking stations
164
165 config ACPI_BAY
166 tristate "Removable Drive Bay (EXPERIMENTAL)"
167 depends on EXPERIMENTAL
168 depends on ACPI_DOCK
169 help
170 This driver adds support for ACPI controlled removable drive
171 bays such as the IBM ultrabay or the Dell Module Bay.
172
173 config ACPI_PROCESSOR
174 tristate "Processor"
175 select THERMAL
176 default y
177 help
178 This driver installs ACPI as the idle handler for Linux, and uses
179 ACPI C2 and C3 processor states to save power, on systems that
180 support it. It is required by several flavors of cpufreq
181 Performance-state drivers.
182
183 config ACPI_HOTPLUG_CPU
184 bool
185 depends on ACPI_PROCESSOR && HOTPLUG_CPU
186 select ACPI_CONTAINER
187 default y
188
189 config ACPI_THERMAL
190 tristate "Thermal Zone"
191 depends on ACPI_PROCESSOR
192 select THERMAL
193 default y
194 help
195 This driver adds support for ACPI thermal zones. Most mobile and
196 some desktop systems support ACPI thermal zones. It is HIGHLY
197 recommended that this option be enabled, as your processor(s)
198 may be damaged without it.
199
200 config ACPI_NUMA
201 bool "NUMA support"
202 depends on NUMA
203 depends on (X86 || IA64)
204 default y if IA64_GENERIC || IA64_SGI_SN2
205
206 config ACPI_WMI
207 tristate "WMI (EXPERIMENTAL)"
208 depends on X86
209 depends on EXPERIMENTAL
210 help
211 This driver adds support for the ACPI-WMI (Windows Management
212 Instrumentation) mapper device (PNP0C14) found on some systems.
213
214 ACPI-WMI is a proprietary extension to ACPI to expose parts of the
215 ACPI firmware to userspace - this is done through various vendor
216 defined methods and data blocks in a PNP0C14 device, which are then
217 made available for userspace to call.
218
219 The implementation of this in Linux currently only exposes this to
220 other kernel space drivers.
221
222 This driver is a required dependency to build the firmware specific
223 drivers needed on many machines, including Acer and HP laptops.
224
225 It is safe to enable this driver even if your DSDT doesn't define
226 any ACPI-WMI devices.
227
228 config ACPI_ASUS
229 tristate "ASUS/Medion Laptop Extras"
230 depends on X86
231 select BACKLIGHT_CLASS_DEVICE
232 ---help---
233 This driver provides support for extra features of ACPI-compatible
234 ASUS laptops. As some of Medion laptops are made by ASUS, it may also
235 support some Medion laptops (such as 9675 for example). It makes all
236 the extra buttons generate standard ACPI events that go through
237 /proc/acpi/events, and (on some models) adds support for changing the
238 display brightness and output, switching the LCD backlight on and off,
239 and most importantly, allows you to blink those fancy LEDs intended
240 for reporting mail and wireless status.
241
242 Note: display switching code is currently considered EXPERIMENTAL,
243 toying with these values may even lock your machine.
244
245 All settings are changed via /proc/acpi/asus directory entries. Owner
246 and group for these entries can be set with asus_uid and asus_gid
247 parameters.
248
249 More information and a userspace daemon for handling the extra buttons
250 at <http://sourceforge.net/projects/acpi4asus/>.
251
252 If you have an ACPI-compatible ASUS laptop, say Y or M here. This
253 driver is still under development, so if your laptop is unsupported or
254 something works not quite as expected, please use the mailing list
255 available on the above page (acpi4asus-user@lists.sourceforge.net).
256
257 NOTE: This driver is deprecated and will probably be removed soon,
258 use asus-laptop instead.
259
260 config ACPI_TOSHIBA
261 tristate "Toshiba Laptop Extras"
262 depends on X86
263 select INPUT_POLLDEV
264 select NET
265 select RFKILL
266 select BACKLIGHT_CLASS_DEVICE
267 ---help---
268 This driver adds support for access to certain system settings
269 on "legacy free" Toshiba laptops. These laptops can be recognized by
270 their lack of a BIOS setup menu and APM support.
271
272 On these machines, all system configuration is handled through the
273 ACPI. This driver is required for access to controls not covered
274 by the general ACPI drivers, such as LCD brightness, video output,
275 etc.
276
277 This driver differs from the non-ACPI Toshiba laptop driver (located
278 under "Processor type and features") in several aspects.
279 Configuration is accessed by reading and writing text files in the
280 /proc tree instead of by program interface to /dev. Furthermore, no
281 power management functions are exposed, as those are handled by the
282 general ACPI drivers.
283
284 More information about this driver is available at
285 <http://memebeam.org/toys/ToshibaAcpiDriver>.
286
287 If you have a legacy free Toshiba laptop (such as the Libretto L1
288 series), say Y.
289
290 config ACPI_CUSTOM_DSDT_FILE
291 string "Custom DSDT Table file to include"
292 default ""
293 depends on !STANDALONE
294 help
295 This option supports a custom DSDT by linking it into the kernel.
296 See Documentation/acpi/dsdt-override.txt
297
298 Enter the full path name to the file which includes the AmlCode
299 declaration.
300
301 If unsure, don't enter a file name.
302
303 config ACPI_CUSTOM_DSDT
304 bool
305 default ACPI_CUSTOM_DSDT_FILE != ""
306
307 config ACPI_BLACKLIST_YEAR
308 int "Disable ACPI for systems before Jan 1st this year" if X86_32
309 default 0
310 help
311 enter a 4-digit year, eg. 2001 to disable ACPI by default
312 on platforms with DMI BIOS date before January 1st that year.
313 "acpi=force" can be used to override this mechanism.
314
315 Enter 0 to disable this mechanism and allow ACPI to
316 run by default no matter what the year. (default)
317
318 config ACPI_DEBUG
319 bool "Debug Statements"
320 default n
321 help
322 The ACPI driver can optionally report errors with a great deal
323 of verbosity. Saying Y enables these statements. This will increase
324 your kernel size by around 50K.
325
326 config ACPI_DEBUG_FUNC_TRACE
327 bool "Additionally enable ACPI function tracing"
328 default n
329 depends on ACPI_DEBUG
330 help
331 ACPI Debug Statements slow down ACPI processing. Function trace
332 is about half of the penalty and is rarely useful.
333
334 config ACPI_EC
335 bool
336 default y
337 help
338 This driver is required on some systems for the proper operation of
339 the battery and thermal drivers. If you are compiling for a
340 mobile system, say Y.
341
342 config ACPI_PCI_SLOT
343 tristate "PCI slot detection driver"
344 default n
345 help
346 This driver will attempt to discover all PCI slots in your system,
347 and creates entries in /sys/bus/pci/slots/. This feature can
348 help you correlate PCI bus addresses with the physical geography
349 of your slots. If you are unsure, say N.
350
351 config ACPI_POWER
352 bool
353 default y
354
355 config ACPI_SYSTEM
356 bool
357 default y
358 help
359 This driver will enable your system to shut down using ACPI, and
360 dump your ACPI DSDT table using /proc/acpi/dsdt.
361
362 config X86_PM_TIMER
363 bool "Power Management Timer Support" if EMBEDDED
364 depends on X86
365 default y
366 help
367 The Power Management Timer is available on all ACPI-capable,
368 in most cases even if ACPI is unusable or blacklisted.
369
370 This timing source is not affected by power management features
371 like aggressive processor idling, throttling, frequency and/or
372 voltage scaling, unlike the commonly used Time Stamp Counter
373 (TSC) timing source.
374
375 You should nearly always say Y here because many modern
376 systems require this timer.
377
378 config ACPI_CONTAINER
379 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
380 depends on EXPERIMENTAL
381 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
382 ---help---
383 This allows _physical_ insertion and removal of CPUs and memory.
384 This can be useful, for example, on NUMA machines that support
385 ACPI based physical hotplug of nodes, or non-NUMA machines that
386 support physical cpu/memory hot-plug.
387
388 If one selects "m", this driver can be loaded with
389 "modprobe acpi_container".
390
391 config ACPI_HOTPLUG_MEMORY
392 tristate "Memory Hotplug"
393 depends on MEMORY_HOTPLUG
394 default n
395 help
396 This driver adds supports for ACPI Memory Hotplug. This driver
397 provides support for fielding notifications on ACPI memory
398 devices (PNP0C80) which represent memory ranges that may be
399 onlined or offlined during runtime.
400
401 Enabling this driver assumes that your platform hardware
402 and firmware have support for hot-plugging physical memory. If
403 your system does not support physically adding or ripping out
404 memory DIMMs at some platform defined granularity (individually
405 or as a bank) at runtime, then you need not enable this driver.
406
407 If one selects "m," this driver can be loaded using the following
408 command:
409 $>modprobe acpi_memhotplug
410
411 config ACPI_SBS
412 tristate "Smart Battery System"
413 depends on X86
414 help
415 This driver adds support for the Smart Battery System, another
416 type of access to battery information, found on some laptops.
417
418 endif # ACPI
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