Commit | Line | Data |
---|---|---|
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 |
6796a120 | 10 | depends on PM |
243b66e7 | 11 | select PNP |
1da177e4 | 12 | default y |
1c48aa36 | 13 | help |
1da177e4 | 14 | Advanced Configuration and Power Interface (ACPI) support for |
1c48aa36 | 15 | Linux requires an ACPI-compliant platform (hardware/firmware), |
1da177e4 LT |
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 | |
1c48aa36 | 25 | are configured, ACPI is used. |
1da177e4 | 26 | |
1c48aa36 BH |
27 | The project home page for the Linux ACPI subsystem is here: |
28 | <http://www.lesswatts.org/projects/acpi/> | |
1da177e4 LT |
29 | |
30 | Linux support for ACPI is based on Intel Corporation's ACPI | |
1c48aa36 BH |
31 | Component Architecture (ACPI CA). For more information on the |
32 | ACPI CA, see: | |
33 | <http://acpica.org/> | |
1da177e4 | 34 | |
1c48aa36 BH |
35 | ACPI is an open industry specification co-developed by |
36 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. | |
37 | The specification is available at: | |
1da177e4 LT |
38 | <http://www.acpi.info> |
39 | ||
3e11c3ce LB |
40 | if ACPI |
41 | ||
673d5b43 LB |
42 | config ACPI_SLEEP |
43 | bool | |
5d1e072b | 44 | depends on SUSPEND || HIBERNATION |
673d5b43 LB |
45 | default y |
46 | ||
b981c591 | 47 | config ACPI_PROCFS |
fb804714 LB |
48 | bool "Deprecated /proc/acpi files" |
49 | depends on PROC_FS | |
1c48aa36 | 50 | help |
fb804714 | 51 | For backwards compatibility, this option allows |
405bbe9f | 52 | deprecated /proc/acpi/ files to exist, even when |
fb804714 LB |
53 | they have been replaced by functions in /sys. |
54 | The deprecated files (and their replacements) include: | |
55 | ||
74cad4ee ZY |
56 | /proc/acpi/processor/*/throttling (/sys/class/thermal/ |
57 | cooling_device*/*) | |
6e37c658 | 58 | /proc/acpi/video/*/brightness (/sys/class/backlight/) |
43d9f87b | 59 | /proc/acpi/thermal_zone/*/* (/sys/class/thermal/) |
fb804714 LB |
60 | This option has no effect on /proc/acpi/ files |
61 | and functions which do not yet exist in /sys. | |
62 | ||
63 | Say N to delete /proc/acpi/ files that have moved to /sys/ | |
1c48aa36 | 64 | |
fdcedbba | 65 | config ACPI_PROCFS_POWER |
9e527971 | 66 | bool "Deprecated power /proc/acpi directories" |
fdcedbba | 67 | depends on PROC_FS |
1c48aa36 | 68 | help |
fdcedbba | 69 | For backwards compatibility, this option allows |
9e527971 | 70 | deprecated power /proc/acpi/ directories to exist, even when |
fdcedbba | 71 | they have been replaced by functions in /sys. |
9e527971 | 72 | The deprecated directories (and their replacements) include: |
fdcedbba AS |
73 | /proc/acpi/battery/* (/sys/class/power_supply/*) |
74 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) | |
9e527971 | 75 | This option has no effect on /proc/acpi/ directories |
fdcedbba | 76 | and functions, which do not yet exist in /sys |
b981c591 | 77 | |
9e527971 AC |
78 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
79 | ||
de584afa DW |
80 | config ACPI_POWER_METER |
81 | tristate "ACPI 4.0 power meter" | |
82 | depends on HWMON | |
83 | help | |
84 | This driver exposes ACPI 4.0 power meters as hardware monitoring | |
85 | devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware | |
86 | and a power meter. | |
87 | ||
88 | To compile this driver as a module, choose M here: | |
89 | the module will be called power-meter. | |
90 | ||
1195a098 TR |
91 | config ACPI_EC_DEBUGFS |
92 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
500de3dd | 93 | default n |
1195a098 TR |
94 | help |
95 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
96 | ||
500de3dd TR |
97 | Be aware that using this interface can confuse your Embedded |
98 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 99 | have to power off your system, and remove the laptop battery for |
500de3dd | 100 | some seconds. |
1195a098 TR |
101 | An Embedded Controller typically is available on laptops and reads |
102 | sensor values like battery state and temperature. | |
500de3dd TR |
103 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
104 | tables. This option allows to access the EC directly without ACPI | |
105 | code being involved. | |
1195a098 TR |
106 | Thus this option is a debug option that helps to write ACPI drivers |
107 | and can be used to identify ACPI code or EC firmware bugs. | |
108 | ||
14e04fb3 LB |
109 | config ACPI_PROC_EVENT |
110 | bool "Deprecated /proc/acpi/event support" | |
111 | depends on PROC_FS | |
721ebe00 | 112 | default y |
1c48aa36 BH |
113 | help |
114 | A user-space daemon, acpid, typically reads /proc/acpi/event | |
115 | and handles all ACPI-generated events. | |
14e04fb3 | 116 | |
1c48aa36 BH |
117 | These events are now delivered to user-space either |
118 | via the input layer or as netlink events. | |
14e04fb3 | 119 | |
721ebe00 | 120 | This build option enables the old code for legacy |
14e04fb3 LB |
121 | user-space implementation. After some time, this will |
122 | be moved under CONFIG_ACPI_PROCFS, and then deleted. | |
123 | ||
721ebe00 HD |
124 | Say Y here to retain the old behaviour. Say N if your |
125 | user-space is newer than kernel 2.6.23 (September 2007). | |
126 | ||
1da177e4 LT |
127 | config ACPI_AC |
128 | tristate "AC Adapter" | |
5527c8be | 129 | depends on X86 |
1b3d4c3b | 130 | select POWER_SUPPLY |
07fefe4c | 131 | default y |
1da177e4 | 132 | help |
1c48aa36 BH |
133 | This driver supports the AC Adapter object, which indicates |
134 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 135 | switch between A/C and battery, say Y. |
1da177e4 | 136 | |
1c48aa36 BH |
137 | To compile this driver as a module, choose M here: |
138 | the module will be called ac. | |
139 | ||
1da177e4 LT |
140 | config ACPI_BATTERY |
141 | tristate "Battery" | |
5527c8be | 142 | depends on X86 |
1b3d4c3b | 143 | select POWER_SUPPLY |
07fefe4c | 144 | default y |
1da177e4 LT |
145 | help |
146 | This driver adds support for battery information through | |
147 | /proc/acpi/battery. If you have a mobile system with a battery, | |
148 | say Y. | |
149 | ||
1c48aa36 BH |
150 | To compile this driver as a module, choose M here: |
151 | the module will be called battery. | |
152 | ||
1da177e4 LT |
153 | config ACPI_BUTTON |
154 | tristate "Button" | |
c0968f0e | 155 | depends on INPUT |
07fefe4c | 156 | default y |
1da177e4 | 157 | help |
1c48aa36 | 158 | This driver handles events on the power, sleep, and lid buttons. |
07fefe4c LB |
159 | A daemon reads /proc/acpi/event and perform user-defined actions |
160 | such as shutting down the system. This is necessary for | |
1c48aa36 BH |
161 | software-controlled poweroff. |
162 | ||
163 | To compile this driver as a module, choose M here: | |
164 | the module will be called button. | |
1da177e4 LT |
165 | |
166 | config ACPI_VIDEO | |
167 | tristate "Video" | |
23b0f015 | 168 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
03e2bf26 | 169 | depends on INPUT |
63c4ec90 | 170 | select THERMAL |
1da177e4 | 171 | help |
1c48aa36 | 172 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 173 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
174 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
175 | such as defining the video POST device, retrieving EDID information, | |
176 | and setting up a video output. | |
177 | ||
178 | To compile this driver as a module, choose M here: | |
179 | the module will be called video. | |
1da177e4 LT |
180 | |
181 | config ACPI_FAN | |
182 | tristate "Fan" | |
63c4ec90 | 183 | select THERMAL |
07fefe4c | 184 | default y |
1da177e4 | 185 | help |
1c48aa36 | 186 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
187 | applications to perform basic fan control (on, off, status). |
188 | ||
1c48aa36 BH |
189 | To compile this driver as a module, choose M here: |
190 | the module will be called fan. | |
191 | ||
c8f7a62c | 192 | config ACPI_DOCK |
898b054f | 193 | bool "Dock" |
8d7bff6c | 194 | depends on EXPERIMENTAL |
c8f7a62c | 195 | help |
1c48aa36 BH |
196 | This driver supports ACPI-controlled docking stations and removable |
197 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 198 | |
1da177e4 LT |
199 | config ACPI_PROCESSOR |
200 | tristate "Processor" | |
63c4ec90 | 201 | select THERMAL |
a4084c14 | 202 | select CPU_IDLE |
07fefe4c | 203 | default y |
1da177e4 | 204 | help |
1c48aa36 BH |
205 | This driver installs ACPI as the idle handler for Linux and uses |
206 | ACPI C2 and C3 processor states to save power on systems that | |
07fefe4c | 207 | support it. It is required by several flavors of cpufreq |
1c48aa36 BH |
208 | performance-state drivers. |
209 | ||
210 | To compile this driver as a module, choose M here: | |
211 | the module will be called processor. | |
1da177e4 LT |
212 | |
213 | config ACPI_HOTPLUG_CPU | |
cbfc1bae AB |
214 | bool |
215 | depends on ACPI_PROCESSOR && HOTPLUG_CPU | |
1da177e4 | 216 | select ACPI_CONTAINER |
cbfc1bae | 217 | default y |
1da177e4 | 218 | |
8e0af514 SL |
219 | config ACPI_PROCESSOR_AGGREGATOR |
220 | tristate "Processor Aggregator" | |
221 | depends on ACPI_PROCESSOR | |
222 | depends on EXPERIMENTAL | |
d91f79eb | 223 | depends on X86 |
8e0af514 SL |
224 | help |
225 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 226 | specific processor configuration and control that applies to all |
8e0af514 SL |
227 | processors in the platform. Currently only logical processor idling |
228 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 229 | supports the new device. |
8e0af514 | 230 | |
1da177e4 LT |
231 | config ACPI_THERMAL |
232 | tristate "Thermal Zone" | |
233 | depends on ACPI_PROCESSOR | |
3f655ef8 | 234 | select THERMAL |
07fefe4c | 235 | default y |
1da177e4 | 236 | help |
1c48aa36 | 237 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
238 | some desktop systems support ACPI thermal zones. It is HIGHLY |
239 | recommended that this option be enabled, as your processor(s) | |
240 | may be damaged without it. | |
241 | ||
1c48aa36 BH |
242 | To compile this driver as a module, choose M here: |
243 | the module will be called thermal. | |
244 | ||
1da177e4 LT |
245 | config ACPI_NUMA |
246 | bool "NUMA support" | |
247 | depends on NUMA | |
762834e8 | 248 | depends on (X86 || IA64) |
1da177e4 LT |
249 | default y if IA64_GENERIC || IA64_SGI_SN2 |
250 | ||
7ce9573e RD |
251 | config ACPI_CUSTOM_DSDT_FILE |
252 | string "Custom DSDT Table file to include" | |
253 | default "" | |
1da177e4 | 254 | depends on !STANDALONE |
1da177e4 | 255 | help |
d89e9d6b LB |
256 | This option supports a custom DSDT by linking it into the kernel. |
257 | See Documentation/acpi/dsdt-override.txt | |
258 | ||
c30fe7f7 UZ |
259 | Enter the full path name to the file which includes the AmlCode |
260 | declaration. | |
1da177e4 | 261 | |
7ce9573e RD |
262 | If unsure, don't enter a file name. |
263 | ||
264 | config ACPI_CUSTOM_DSDT | |
265 | bool | |
266 | default ACPI_CUSTOM_DSDT_FILE != "" | |
267 | ||
1da177e4 | 268 | config ACPI_BLACKLIST_YEAR |
2eb1bdba | 269 | int "Disable ACPI for systems before Jan 1st this year" if X86_32 |
1da177e4 LT |
270 | default 0 |
271 | help | |
1c48aa36 | 272 | Enter a 4-digit year, e.g., 2001, to disable ACPI by default |
1da177e4 LT |
273 | on platforms with DMI BIOS date before January 1st that year. |
274 | "acpi=force" can be used to override this mechanism. | |
275 | ||
276 | Enter 0 to disable this mechanism and allow ACPI to | |
277 | run by default no matter what the year. (default) | |
278 | ||
279 | config ACPI_DEBUG | |
280 | bool "Debug Statements" | |
1da177e4 LT |
281 | default n |
282 | help | |
a0d84a92 BH |
283 | The ACPI subsystem can produce debug output. Saying Y enables this |
284 | output and increases the kernel size by around 50K. | |
285 | ||
286 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
287 | parameters documented in Documentation/acpi/debug.txt and | |
288 | Documentation/kernel-parameters.txt to control the type and | |
289 | amount of debug output. | |
1da177e4 | 290 | |
798d9103 TR |
291 | config ACPI_DEBUG_FUNC_TRACE |
292 | bool "Additionally enable ACPI function tracing" | |
293 | default n | |
294 | depends on ACPI_DEBUG | |
295 | help | |
296 | ACPI Debug Statements slow down ACPI processing. Function trace | |
297 | is about half of the penalty and is rarely useful. | |
298 | ||
8344b568 AC |
299 | config ACPI_PCI_SLOT |
300 | tristate "PCI slot detection driver" | |
268a03a4 | 301 | depends on SYSFS |
8344b568 AC |
302 | default n |
303 | help | |
1c48aa36 BH |
304 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
305 | slots in the system. This can help correlate PCI bus addresses, | |
306 | i.e., segment/bus/device/function tuples, with physical slots in | |
307 | the system. If you are unsure, say N. | |
308 | ||
309 | To compile this driver as a module, choose M here: | |
310 | the module will be called pci_slot. | |
8344b568 | 311 | |
1da177e4 | 312 | config X86_PM_TIMER |
e78256b8 | 313 | bool "Power Management Timer Support" if EMBEDDED |
1da177e4 | 314 | depends on X86 |
07fefe4c | 315 | default y |
1da177e4 LT |
316 | help |
317 | The Power Management Timer is available on all ACPI-capable, | |
318 | in most cases even if ACPI is unusable or blacklisted. | |
319 | ||
c73a668c | 320 | This timing source is not affected by power management features |
1da177e4 LT |
321 | like aggressive processor idling, throttling, frequency and/or |
322 | voltage scaling, unlike the commonly used Time Stamp Counter | |
323 | (TSC) timing source. | |
324 | ||
e78256b8 AK |
325 | You should nearly always say Y here because many modern |
326 | systems require this timer. | |
1da177e4 LT |
327 | |
328 | config ACPI_CONTAINER | |
1c48aa36 | 329 | tristate "Container and Module Devices (EXPERIMENTAL)" |
1da177e4 LT |
330 | depends on EXPERIMENTAL |
331 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) | |
1c48aa36 BH |
332 | help |
333 | This driver supports ACPI Container and Module devices (IDs | |
334 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 335 | |
1c48aa36 BH |
336 | This helps support hotplug of nodes, CPUs, and memory. |
337 | ||
338 | To compile this driver as a module, choose M here: | |
339 | the module will be called container. | |
1da177e4 LT |
340 | |
341 | config ACPI_HOTPLUG_MEMORY | |
342 | tristate "Memory Hotplug" | |
bc02af93 | 343 | depends on MEMORY_HOTPLUG |
1da177e4 LT |
344 | default n |
345 | help | |
1c48aa36 BH |
346 | This driver supports ACPI memory hotplug. The driver |
347 | fields notifications on ACPI memory devices (PNP0C80), | |
348 | which represent memory ranges that may be onlined or | |
349 | offlined during runtime. | |
1da177e4 | 350 | |
1c48aa36 BH |
351 | If your hardware and firmware do not support adding or |
352 | removing memory devices at runtime, you need not enable | |
353 | this driver. | |
1da177e4 | 354 | |
1c48aa36 BH |
355 | To compile this driver as a module, choose M here: |
356 | the module will be called acpi_memhotplug. | |
3f86b832 RT |
357 | |
358 | config ACPI_SBS | |
94f6c086 | 359 | tristate "Smart Battery System" |
b4150fc4 | 360 | depends on X86 |
1b3d4c3b | 361 | select POWER_SUPPLY |
3f86b832 | 362 | help |
1c48aa36 | 363 | This driver supports the Smart Battery System, another |
94f6c086 | 364 | type of access to battery information, found on some laptops. |
3f86b832 | 365 | |
1c48aa36 BH |
366 | To compile this driver as a module, choose M here: |
367 | the modules will be called sbs and sbshc. | |
368 | ||
801eab81 HY |
369 | config ACPI_HED |
370 | tristate "Hardware Error Device" | |
371 | help | |
372 | This driver supports the Hardware Error Device (PNP0C33), | |
373 | which is used to report some hardware errors notified via | |
374 | SCI, mainly the corrected errors. | |
375 | ||
a643ce20 HY |
376 | source "drivers/acpi/apei/Kconfig" |
377 | ||
1da177e4 | 378 | endif # ACPI |