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Commit | Line | Data |
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1da177e4 LT |
1 | # |
2 | # ACPI Configuration | |
3 | # | |
4 | ||
3f2c48c9 | 5 | menuconfig ACPI |
355ee5eb | 6 | bool "ACPI (Advanced Configuration and Power Interface) Support" |
1da177e4 LT |
7 | depends on !IA64_HP_SIM |
8 | depends on IA64 || X86 | |
1300124f | 9 | depends on PCI |
243b66e7 | 10 | select PNP |
1da177e4 | 11 | default y |
1c48aa36 | 12 | help |
1da177e4 | 13 | Advanced Configuration and Power Interface (ACPI) support for |
1c48aa36 | 14 | Linux requires an ACPI-compliant platform (hardware/firmware), |
1da177e4 LT |
15 | and assumes the presence of OS-directed configuration and power |
16 | management (OSPM) software. This option will enlarge your | |
17 | kernel by about 70K. | |
18 | ||
19 | Linux ACPI provides a robust functional replacement for several | |
20 | legacy configuration and power management interfaces, including | |
21 | the Plug-and-Play BIOS specification (PnP BIOS), the | |
22 | MultiProcessor Specification (MPS), and the Advanced Power | |
23 | Management (APM) specification. If both ACPI and APM support | |
1c48aa36 | 24 | are configured, ACPI is used. |
1da177e4 | 25 | |
1c48aa36 BH |
26 | The project home page for the Linux ACPI subsystem is here: |
27 | <http://www.lesswatts.org/projects/acpi/> | |
1da177e4 LT |
28 | |
29 | Linux support for ACPI is based on Intel Corporation's ACPI | |
1c48aa36 BH |
30 | Component Architecture (ACPI CA). For more information on the |
31 | ACPI CA, see: | |
32 | <http://acpica.org/> | |
1da177e4 | 33 | |
1c48aa36 BH |
34 | ACPI is an open industry specification co-developed by |
35 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. | |
36 | The specification is available at: | |
1da177e4 LT |
37 | <http://www.acpi.info> |
38 | ||
3e11c3ce LB |
39 | if ACPI |
40 | ||
673d5b43 LB |
41 | config ACPI_SLEEP |
42 | bool | |
5d1e072b | 43 | depends on SUSPEND || HIBERNATION |
673d5b43 LB |
44 | default y |
45 | ||
b981c591 | 46 | config ACPI_PROCFS |
fb804714 LB |
47 | bool "Deprecated /proc/acpi files" |
48 | depends on PROC_FS | |
1c48aa36 | 49 | help |
fb804714 | 50 | For backwards compatibility, this option allows |
405bbe9f | 51 | deprecated /proc/acpi/ files to exist, even when |
fb804714 | 52 | they have been replaced by functions in /sys. |
fb804714 | 53 | |
fb804714 LB |
54 | This option has no effect on /proc/acpi/ files |
55 | and functions which do not yet exist in /sys. | |
56 | ||
57 | Say N to delete /proc/acpi/ files that have moved to /sys/ | |
1c48aa36 | 58 | |
fdcedbba | 59 | config ACPI_PROCFS_POWER |
9e527971 | 60 | bool "Deprecated power /proc/acpi directories" |
fdcedbba | 61 | depends on PROC_FS |
1c48aa36 | 62 | help |
fdcedbba | 63 | For backwards compatibility, this option allows |
9e527971 | 64 | deprecated power /proc/acpi/ directories to exist, even when |
fdcedbba | 65 | they have been replaced by functions in /sys. |
9e527971 | 66 | The deprecated directories (and their replacements) include: |
fdcedbba AS |
67 | /proc/acpi/battery/* (/sys/class/power_supply/*) |
68 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) | |
9e527971 | 69 | This option has no effect on /proc/acpi/ directories |
fdcedbba | 70 | and functions, which do not yet exist in /sys |
6d855fcd ZR |
71 | This option, together with the proc directories, will be |
72 | deleted in 2.6.39. | |
b981c591 | 73 | |
9e527971 AC |
74 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
75 | ||
de584afa DW |
76 | config ACPI_POWER_METER |
77 | tristate "ACPI 4.0 power meter" | |
78 | depends on HWMON | |
79 | help | |
80 | This driver exposes ACPI 4.0 power meters as hardware monitoring | |
81 | devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware | |
82 | and a power meter. | |
83 | ||
84 | To compile this driver as a module, choose M here: | |
85 | the module will be called power-meter. | |
86 | ||
1195a098 TR |
87 | config ACPI_EC_DEBUGFS |
88 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
500de3dd | 89 | default n |
1195a098 TR |
90 | help |
91 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
92 | ||
500de3dd TR |
93 | Be aware that using this interface can confuse your Embedded |
94 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 95 | have to power off your system, and remove the laptop battery for |
500de3dd | 96 | some seconds. |
1195a098 TR |
97 | An Embedded Controller typically is available on laptops and reads |
98 | sensor values like battery state and temperature. | |
500de3dd TR |
99 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
100 | tables. This option allows to access the EC directly without ACPI | |
101 | code being involved. | |
1195a098 TR |
102 | Thus this option is a debug option that helps to write ACPI drivers |
103 | and can be used to identify ACPI code or EC firmware bugs. | |
104 | ||
14e04fb3 LB |
105 | config ACPI_PROC_EVENT |
106 | bool "Deprecated /proc/acpi/event support" | |
107 | depends on PROC_FS | |
721ebe00 | 108 | default y |
1c48aa36 BH |
109 | help |
110 | A user-space daemon, acpid, typically reads /proc/acpi/event | |
111 | and handles all ACPI-generated events. | |
14e04fb3 | 112 | |
1c48aa36 BH |
113 | These events are now delivered to user-space either |
114 | via the input layer or as netlink events. | |
14e04fb3 | 115 | |
721ebe00 | 116 | This build option enables the old code for legacy |
14e04fb3 LB |
117 | user-space implementation. After some time, this will |
118 | be moved under CONFIG_ACPI_PROCFS, and then deleted. | |
119 | ||
721ebe00 HD |
120 | Say Y here to retain the old behaviour. Say N if your |
121 | user-space is newer than kernel 2.6.23 (September 2007). | |
122 | ||
1da177e4 LT |
123 | config ACPI_AC |
124 | tristate "AC Adapter" | |
5527c8be | 125 | depends on X86 |
1b3d4c3b | 126 | select POWER_SUPPLY |
07fefe4c | 127 | default y |
1da177e4 | 128 | help |
1c48aa36 BH |
129 | This driver supports the AC Adapter object, which indicates |
130 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 131 | switch between A/C and battery, say Y. |
1da177e4 | 132 | |
1c48aa36 BH |
133 | To compile this driver as a module, choose M here: |
134 | the module will be called ac. | |
135 | ||
1da177e4 LT |
136 | config ACPI_BATTERY |
137 | tristate "Battery" | |
5527c8be | 138 | depends on X86 |
1b3d4c3b | 139 | select POWER_SUPPLY |
07fefe4c | 140 | default y |
1da177e4 LT |
141 | help |
142 | This driver adds support for battery information through | |
143 | /proc/acpi/battery. If you have a mobile system with a battery, | |
144 | say Y. | |
145 | ||
1c48aa36 BH |
146 | To compile this driver as a module, choose M here: |
147 | the module will be called battery. | |
148 | ||
1da177e4 LT |
149 | config ACPI_BUTTON |
150 | tristate "Button" | |
c0968f0e | 151 | depends on INPUT |
07fefe4c | 152 | default y |
1da177e4 | 153 | help |
1c48aa36 | 154 | This driver handles events on the power, sleep, and lid buttons. |
07fefe4c LB |
155 | A daemon reads /proc/acpi/event and perform user-defined actions |
156 | such as shutting down the system. This is necessary for | |
1c48aa36 BH |
157 | software-controlled poweroff. |
158 | ||
159 | To compile this driver as a module, choose M here: | |
160 | the module will be called button. | |
1da177e4 LT |
161 | |
162 | config ACPI_VIDEO | |
163 | tristate "Video" | |
23b0f015 | 164 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
03e2bf26 | 165 | depends on INPUT |
63c4ec90 | 166 | select THERMAL |
1da177e4 | 167 | help |
1c48aa36 | 168 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 169 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
170 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
171 | such as defining the video POST device, retrieving EDID information, | |
172 | and setting up a video output. | |
173 | ||
174 | To compile this driver as a module, choose M here: | |
175 | the module will be called video. | |
1da177e4 LT |
176 | |
177 | config ACPI_FAN | |
178 | tristate "Fan" | |
63c4ec90 | 179 | select THERMAL |
07fefe4c | 180 | default y |
1da177e4 | 181 | help |
1c48aa36 | 182 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
183 | applications to perform basic fan control (on, off, status). |
184 | ||
1c48aa36 BH |
185 | To compile this driver as a module, choose M here: |
186 | the module will be called fan. | |
187 | ||
c8f7a62c | 188 | config ACPI_DOCK |
898b054f | 189 | bool "Dock" |
8d7bff6c | 190 | depends on EXPERIMENTAL |
c8f7a62c | 191 | help |
1c48aa36 BH |
192 | This driver supports ACPI-controlled docking stations and removable |
193 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 194 | |
1da177e4 LT |
195 | config ACPI_PROCESSOR |
196 | tristate "Processor" | |
63c4ec90 | 197 | select THERMAL |
a4084c14 | 198 | select CPU_IDLE |
07fefe4c | 199 | default y |
1da177e4 | 200 | help |
1c48aa36 BH |
201 | This driver installs ACPI as the idle handler for Linux and uses |
202 | ACPI C2 and C3 processor states to save power on systems that | |
07fefe4c | 203 | support it. It is required by several flavors of cpufreq |
1c48aa36 BH |
204 | performance-state drivers. |
205 | ||
206 | To compile this driver as a module, choose M here: | |
207 | the module will be called processor. | |
e92b297c ZY |
208 | config ACPI_IPMI |
209 | tristate "IPMI" | |
210 | depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER | |
211 | default n | |
212 | help | |
213 | This driver enables the ACPI to access the BMC controller. And it | |
214 | uses the IPMI request/response message to communicate with BMC | |
215 | controller, which can be found on on the server. | |
216 | ||
217 | To compile this driver as a module, choose M here: | |
218 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
219 | |
220 | config ACPI_HOTPLUG_CPU | |
cbfc1bae AB |
221 | bool |
222 | depends on ACPI_PROCESSOR && HOTPLUG_CPU | |
1da177e4 | 223 | select ACPI_CONTAINER |
cbfc1bae | 224 | default y |
1da177e4 | 225 | |
8e0af514 SL |
226 | config ACPI_PROCESSOR_AGGREGATOR |
227 | tristate "Processor Aggregator" | |
228 | depends on ACPI_PROCESSOR | |
229 | depends on EXPERIMENTAL | |
d91f79eb | 230 | depends on X86 |
8e0af514 SL |
231 | help |
232 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 233 | specific processor configuration and control that applies to all |
8e0af514 SL |
234 | processors in the platform. Currently only logical processor idling |
235 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 236 | supports the new device. |
8e0af514 | 237 | |
1da177e4 LT |
238 | config ACPI_THERMAL |
239 | tristate "Thermal Zone" | |
240 | depends on ACPI_PROCESSOR | |
3f655ef8 | 241 | select THERMAL |
07fefe4c | 242 | default y |
1da177e4 | 243 | help |
1c48aa36 | 244 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
245 | some desktop systems support ACPI thermal zones. It is HIGHLY |
246 | recommended that this option be enabled, as your processor(s) | |
247 | may be damaged without it. | |
248 | ||
1c48aa36 BH |
249 | To compile this driver as a module, choose M here: |
250 | the module will be called thermal. | |
251 | ||
1da177e4 LT |
252 | config ACPI_NUMA |
253 | bool "NUMA support" | |
254 | depends on NUMA | |
762834e8 | 255 | depends on (X86 || IA64) |
1da177e4 LT |
256 | default y if IA64_GENERIC || IA64_SGI_SN2 |
257 | ||
7ce9573e RD |
258 | config ACPI_CUSTOM_DSDT_FILE |
259 | string "Custom DSDT Table file to include" | |
260 | default "" | |
1da177e4 | 261 | depends on !STANDALONE |
1da177e4 | 262 | help |
d89e9d6b LB |
263 | This option supports a custom DSDT by linking it into the kernel. |
264 | See Documentation/acpi/dsdt-override.txt | |
265 | ||
c30fe7f7 UZ |
266 | Enter the full path name to the file which includes the AmlCode |
267 | declaration. | |
1da177e4 | 268 | |
7ce9573e RD |
269 | If unsure, don't enter a file name. |
270 | ||
271 | config ACPI_CUSTOM_DSDT | |
272 | bool | |
273 | default ACPI_CUSTOM_DSDT_FILE != "" | |
274 | ||
1da177e4 | 275 | config ACPI_BLACKLIST_YEAR |
2eb1bdba | 276 | int "Disable ACPI for systems before Jan 1st this year" if X86_32 |
1da177e4 LT |
277 | default 0 |
278 | help | |
1c48aa36 | 279 | Enter a 4-digit year, e.g., 2001, to disable ACPI by default |
1da177e4 LT |
280 | on platforms with DMI BIOS date before January 1st that year. |
281 | "acpi=force" can be used to override this mechanism. | |
282 | ||
283 | Enter 0 to disable this mechanism and allow ACPI to | |
284 | run by default no matter what the year. (default) | |
285 | ||
286 | config ACPI_DEBUG | |
287 | bool "Debug Statements" | |
1da177e4 LT |
288 | default n |
289 | help | |
a0d84a92 BH |
290 | The ACPI subsystem can produce debug output. Saying Y enables this |
291 | output and increases the kernel size by around 50K. | |
292 | ||
293 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
294 | parameters documented in Documentation/acpi/debug.txt and | |
295 | Documentation/kernel-parameters.txt to control the type and | |
296 | amount of debug output. | |
1da177e4 | 297 | |
798d9103 TR |
298 | config ACPI_DEBUG_FUNC_TRACE |
299 | bool "Additionally enable ACPI function tracing" | |
300 | default n | |
301 | depends on ACPI_DEBUG | |
302 | help | |
303 | ACPI Debug Statements slow down ACPI processing. Function trace | |
304 | is about half of the penalty and is rarely useful. | |
305 | ||
8344b568 AC |
306 | config ACPI_PCI_SLOT |
307 | tristate "PCI slot detection driver" | |
268a03a4 | 308 | depends on SYSFS |
8344b568 AC |
309 | default n |
310 | help | |
1c48aa36 BH |
311 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
312 | slots in the system. This can help correlate PCI bus addresses, | |
313 | i.e., segment/bus/device/function tuples, with physical slots in | |
314 | the system. If you are unsure, say N. | |
315 | ||
316 | To compile this driver as a module, choose M here: | |
317 | the module will be called pci_slot. | |
8344b568 | 318 | |
1da177e4 | 319 | config X86_PM_TIMER |
6a108a14 | 320 | bool "Power Management Timer Support" if EXPERT |
1da177e4 | 321 | depends on X86 |
07fefe4c | 322 | default y |
1da177e4 LT |
323 | help |
324 | The Power Management Timer is available on all ACPI-capable, | |
325 | in most cases even if ACPI is unusable or blacklisted. | |
326 | ||
c73a668c | 327 | This timing source is not affected by power management features |
1da177e4 LT |
328 | like aggressive processor idling, throttling, frequency and/or |
329 | voltage scaling, unlike the commonly used Time Stamp Counter | |
330 | (TSC) timing source. | |
331 | ||
e78256b8 AK |
332 | You should nearly always say Y here because many modern |
333 | systems require this timer. | |
1da177e4 LT |
334 | |
335 | config ACPI_CONTAINER | |
1c48aa36 | 336 | tristate "Container and Module Devices (EXPERIMENTAL)" |
1da177e4 LT |
337 | depends on EXPERIMENTAL |
338 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) | |
1c48aa36 BH |
339 | help |
340 | This driver supports ACPI Container and Module devices (IDs | |
341 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 342 | |
1c48aa36 BH |
343 | This helps support hotplug of nodes, CPUs, and memory. |
344 | ||
345 | To compile this driver as a module, choose M here: | |
346 | the module will be called container. | |
1da177e4 LT |
347 | |
348 | config ACPI_HOTPLUG_MEMORY | |
349 | tristate "Memory Hotplug" | |
bc02af93 | 350 | depends on MEMORY_HOTPLUG |
1da177e4 LT |
351 | default n |
352 | help | |
1c48aa36 BH |
353 | This driver supports ACPI memory hotplug. The driver |
354 | fields notifications on ACPI memory devices (PNP0C80), | |
355 | which represent memory ranges that may be onlined or | |
356 | offlined during runtime. | |
1da177e4 | 357 | |
1c48aa36 BH |
358 | If your hardware and firmware do not support adding or |
359 | removing memory devices at runtime, you need not enable | |
360 | this driver. | |
1da177e4 | 361 | |
1c48aa36 BH |
362 | To compile this driver as a module, choose M here: |
363 | the module will be called acpi_memhotplug. | |
3f86b832 RT |
364 | |
365 | config ACPI_SBS | |
94f6c086 | 366 | tristate "Smart Battery System" |
b4150fc4 | 367 | depends on X86 |
1b3d4c3b | 368 | select POWER_SUPPLY |
3f86b832 | 369 | help |
1c48aa36 | 370 | This driver supports the Smart Battery System, another |
94f6c086 | 371 | type of access to battery information, found on some laptops. |
3f86b832 | 372 | |
1c48aa36 BH |
373 | To compile this driver as a module, choose M here: |
374 | the modules will be called sbs and sbshc. | |
375 | ||
801eab81 HY |
376 | config ACPI_HED |
377 | tristate "Hardware Error Device" | |
378 | help | |
379 | This driver supports the Hardware Error Device (PNP0C33), | |
380 | which is used to report some hardware errors notified via | |
381 | SCI, mainly the corrected errors. | |
382 | ||
a643ce20 HY |
383 | source "drivers/acpi/apei/Kconfig" |
384 | ||
1da177e4 | 385 | endif # ACPI |