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1#
2# ACPI Configuration
3#
4
5menuconfig 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 select PNP
11 default y
12 help
13 Advanced Configuration and Power Interface (ACPI) support for
14 Linux requires an ACPI-compliant platform (hardware/firmware),
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
24 are configured, ACPI is used.
25
26 The project home page for the Linux ACPI subsystem is here:
27 <http://www.lesswatts.org/projects/acpi/>
28
29 Linux support for ACPI is based on Intel Corporation's ACPI
30 Component Architecture (ACPI CA). For more information on the
31 ACPI CA, see:
32 <http://acpica.org/>
33
34 ACPI is an open industry specification co-developed by
35 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
36 The specification is available at:
37 <http://www.acpi.info>
38
39if ACPI
40
41config ACPI_SLEEP
42 bool
43 depends on SUSPEND || HIBERNATION
44 default y
45
46config ACPI_PROCFS
47 bool "Deprecated /proc/acpi files"
48 depends on PROC_FS
49 help
50 For backwards compatibility, this option allows
51 deprecated /proc/acpi/ files to exist, even when
52 they have been replaced by functions in /sys.
53
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/
58
59config ACPI_PROCFS_POWER
60 bool "Deprecated power /proc/acpi directories"
61 depends on PROC_FS
62 help
63 For backwards compatibility, this option allows
64 deprecated power /proc/acpi/ directories to exist, even when
65 they have been replaced by functions in /sys.
66 The deprecated directories (and their replacements) include:
67 /proc/acpi/battery/* (/sys/class/power_supply/*)
68 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
69 This option has no effect on /proc/acpi/ directories
70 and functions, which do not yet exist in /sys
71 This option, together with the proc directories, will be
72 deleted in 2.6.39.
73
74 Say N to delete power /proc/acpi/ directories that have moved to /sys/
75
76config ACPI_EC_DEBUGFS
77 tristate "EC read/write access through /sys/kernel/debug/ec"
78 default n
79 help
80 Say N to disable Embedded Controller /sys/kernel/debug interface
81
82 Be aware that using this interface can confuse your Embedded
83 Controller in a way that a normal reboot is not enough. You then
84 have to power off your system, and remove the laptop battery for
85 some seconds.
86 An Embedded Controller typically is available on laptops and reads
87 sensor values like battery state and temperature.
88 The kernel accesses the EC through ACPI parsed code provided by BIOS
89 tables. This option allows to access the EC directly without ACPI
90 code being involved.
91 Thus this option is a debug option that helps to write ACPI drivers
92 and can be used to identify ACPI code or EC firmware bugs.
93
94config ACPI_PROC_EVENT
95 bool "Deprecated /proc/acpi/event support"
96 depends on PROC_FS
97 default y
98 help
99 A user-space daemon, acpid, typically reads /proc/acpi/event
100 and handles all ACPI-generated events.
101
102 These events are now delivered to user-space either
103 via the input layer or as netlink events.
104
105 This build option enables the old code for legacy
106 user-space implementation. After some time, this will
107 be moved under CONFIG_ACPI_PROCFS, and then deleted.
108
109 Say Y here to retain the old behaviour. Say N if your
110 user-space is newer than kernel 2.6.23 (September 2007).
111
112config ACPI_AC
113 tristate "AC Adapter"
114 depends on X86
115 select POWER_SUPPLY
116 default y
117 help
118 This driver supports the AC Adapter object, which indicates
119 whether a system is on AC or not. If you have a system that can
120 switch between A/C and battery, say Y.
121
122 To compile this driver as a module, choose M here:
123 the module will be called ac.
124
125config ACPI_BATTERY
126 tristate "Battery"
127 depends on X86
128 select POWER_SUPPLY
129 default y
130 help
131 This driver adds support for battery information through
132 /proc/acpi/battery. If you have a mobile system with a battery,
133 say Y.
134
135 To compile this driver as a module, choose M here:
136 the module will be called battery.
137
138config ACPI_BUTTON
139 tristate "Button"
140 depends on INPUT
141 default y
142 help
143 This driver handles events on the power, sleep, and lid buttons.
144 A daemon reads /proc/acpi/event and perform user-defined actions
145 such as shutting down the system. This is necessary for
146 software-controlled poweroff.
147
148 To compile this driver as a module, choose M here:
149 the module will be called button.
150
151config ACPI_VIDEO
152 tristate "Video"
153 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
154 depends on INPUT
155 select THERMAL
156 help
157 This driver implements the ACPI Extensions For Display Adapters
158 for integrated graphics devices on motherboard, as specified in
159 ACPI 2.0 Specification, Appendix B. This supports basic operations
160 such as defining the video POST device, retrieving EDID information,
161 and setting up a video output.
162
163 To compile this driver as a module, choose M here:
164 the module will be called video.
165
166config ACPI_FAN
167 tristate "Fan"
168 select THERMAL
169 default y
170 help
171 This driver supports ACPI fan devices, allowing user-mode
172 applications to perform basic fan control (on, off, status).
173
174 To compile this driver as a module, choose M here:
175 the module will be called fan.
176
177config ACPI_DOCK
178 bool "Dock"
179 depends on EXPERIMENTAL
180 help
181 This driver supports ACPI-controlled docking stations and removable
182 drive bays such as the IBM Ultrabay and the Dell Module Bay.
183
184config ACPI_PROCESSOR
185 tristate "Processor"
186 select THERMAL
187 select CPU_IDLE
188 default y
189 help
190 This driver installs ACPI as the idle handler for Linux and uses
191 ACPI C2 and C3 processor states to save power on systems that
192 support it. It is required by several flavors of cpufreq
193 performance-state drivers.
194
195 To compile this driver as a module, choose M here:
196 the module will be called processor.
197config ACPI_IPMI
198 tristate "IPMI"
199 depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER
200 default n
201 help
202 This driver enables the ACPI to access the BMC controller. And it
203 uses the IPMI request/response message to communicate with BMC
204 controller, which can be found on on the server.
205
206 To compile this driver as a module, choose M here:
207 the module will be called as acpi_ipmi.
208
209config ACPI_HOTPLUG_CPU
210 bool
211 depends on ACPI_PROCESSOR && HOTPLUG_CPU
212 select ACPI_CONTAINER
213 default y
214
215config ACPI_PROCESSOR_AGGREGATOR
216 tristate "Processor Aggregator"
217 depends on ACPI_PROCESSOR
218 depends on EXPERIMENTAL
219 depends on X86
220 help
221 ACPI 4.0 defines processor Aggregator, which enables OS to perform
222 specific processor configuration and control that applies to all
223 processors in the platform. Currently only logical processor idling
224 is defined, which is to reduce power consumption. This driver
225 supports the new device.
226
227config ACPI_THERMAL
228 tristate "Thermal Zone"
229 depends on ACPI_PROCESSOR
230 select THERMAL
231 default y
232 help
233 This driver supports ACPI thermal zones. Most mobile and
234 some desktop systems support ACPI thermal zones. It is HIGHLY
235 recommended that this option be enabled, as your processor(s)
236 may be damaged without it.
237
238 To compile this driver as a module, choose M here:
239 the module will be called thermal.
240
241config ACPI_NUMA
242 bool "NUMA support"
243 depends on NUMA
244 depends on (X86 || IA64)
245 default y if IA64_GENERIC || IA64_SGI_SN2
246
247config ACPI_CUSTOM_DSDT_FILE
248 string "Custom DSDT Table file to include"
249 default ""
250 depends on !STANDALONE
251 help
252 This option supports a custom DSDT by linking it into the kernel.
253 See Documentation/acpi/dsdt-override.txt
254
255 Enter the full path name to the file which includes the AmlCode
256 declaration.
257
258 If unsure, don't enter a file name.
259
260config ACPI_CUSTOM_DSDT
261 bool
262 default ACPI_CUSTOM_DSDT_FILE != ""
263
264config ACPI_BLACKLIST_YEAR
265 int "Disable ACPI for systems before Jan 1st this year" if X86_32
266 default 0
267 help
268 Enter a 4-digit year, e.g., 2001, to disable ACPI by default
269 on platforms with DMI BIOS date before January 1st that year.
270 "acpi=force" can be used to override this mechanism.
271
272 Enter 0 to disable this mechanism and allow ACPI to
273 run by default no matter what the year. (default)
274
275config ACPI_DEBUG
276 bool "Debug Statements"
277 default n
278 help
279 The ACPI subsystem can produce debug output. Saying Y enables this
280 output and increases the kernel size by around 50K.
281
282 Use the acpi.debug_layer and acpi.debug_level kernel command-line
283 parameters documented in Documentation/acpi/debug.txt and
284 Documentation/kernel-parameters.txt to control the type and
285 amount of debug output.
286
287config ACPI_DEBUG_FUNC_TRACE
288 bool "Additionally enable ACPI function tracing"
289 default n
290 depends on ACPI_DEBUG
291 help
292 ACPI Debug Statements slow down ACPI processing. Function trace
293 is about half of the penalty and is rarely useful.
294
295config ACPI_PCI_SLOT
296 tristate "PCI slot detection driver"
297 depends on SYSFS
298 default n
299 help
300 This driver creates entries in /sys/bus/pci/slots/ for all PCI
301 slots in the system. This can help correlate PCI bus addresses,
302 i.e., segment/bus/device/function tuples, with physical slots in
303 the system. If you are unsure, say N.
304
305 To compile this driver as a module, choose M here:
306 the module will be called pci_slot.
307
308config X86_PM_TIMER
309 bool "Power Management Timer Support" if EXPERT
310 depends on X86
311 default y
312 help
313 The Power Management Timer is available on all ACPI-capable,
314 in most cases even if ACPI is unusable or blacklisted.
315
316 This timing source is not affected by power management features
317 like aggressive processor idling, throttling, frequency and/or
318 voltage scaling, unlike the commonly used Time Stamp Counter
319 (TSC) timing source.
320
321 You should nearly always say Y here because many modern
322 systems require this timer.
323
324config ACPI_CONTAINER
325 tristate "Container and Module Devices (EXPERIMENTAL)"
326 depends on EXPERIMENTAL
327 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
328 help
329 This driver supports ACPI Container and Module devices (IDs
330 ACPI0004, PNP0A05, and PNP0A06).
331
332 This helps support hotplug of nodes, CPUs, and memory.
333
334 To compile this driver as a module, choose M here:
335 the module will be called container.
336
337config ACPI_HOTPLUG_MEMORY
338 tristate "Memory Hotplug"
339 depends on MEMORY_HOTPLUG
340 default n
341 help
342 This driver supports ACPI memory hotplug. The driver
343 fields notifications on ACPI memory devices (PNP0C80),
344 which represent memory ranges that may be onlined or
345 offlined during runtime.
346
347 If your hardware and firmware do not support adding or
348 removing memory devices at runtime, you need not enable
349 this driver.
350
351 To compile this driver as a module, choose M here:
352 the module will be called acpi_memhotplug.
353
354config ACPI_SBS
355 tristate "Smart Battery System"
356 depends on X86
357 select POWER_SUPPLY
358 help
359 This driver supports the Smart Battery System, another
360 type of access to battery information, found on some laptops.
361
362 To compile this driver as a module, choose M here:
363 the modules will be called sbs and sbshc.
364
365config ACPI_HED
366 tristate "Hardware Error Device"
367 help
368 This driver supports the Hardware Error Device (PNP0C33),
369 which is used to report some hardware errors notified via
370 SCI, mainly the corrected errors.
371
372config ACPI_CUSTOM_METHOD
373 tristate "Allow ACPI methods to be inserted/replaced at run time"
374 depends on DEBUG_FS
375 default n
376 help
377 This debug facility allows ACPI AML methods to me inserted and/or
378 replaced without rebooting the system. For details refer to:
379 Documentation/acpi/method-customizing.txt.
380
381 NOTE: This option is security sensitive, because it allows arbitrary
382 kernel memory to be written to by root (uid=0) users, allowing them
383 to bypass certain security measures (e.g. if root is not allowed to
384 load additional kernel modules after boot, this feature may be used
385 to override that restriction).
386
387source "drivers/acpi/apei/Kconfig"
388
389endif # ACPI
1#
2# ACPI Configuration
3#
4
5menuconfig ACPI
6 bool "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
8 depends on IA64 || X86 || (ARM64 && EXPERT)
9 depends on PCI
10 select PNP
11 default y
12 help
13 Advanced Configuration and Power Interface (ACPI) support for
14 Linux requires an ACPI-compliant platform (hardware/firmware),
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
24 are configured, ACPI is used.
25
26 The project home page for the Linux ACPI subsystem is here:
27 <https://01.org/linux-acpi>
28
29 Linux support for ACPI is based on Intel Corporation's ACPI
30 Component Architecture (ACPI CA). For more information on the
31 ACPI CA, see:
32 <http://acpica.org/>
33
34 ACPI is an open industry specification originally co-developed by
35 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
36 it is developed by the ACPI Specification Working Group (ASWG) under
37 the UEFI Forum and any UEFI member can join the ASWG and contribute
38 to the ACPI specification.
39 The specification is available at:
40 <http://www.acpi.info>
41 <http://www.uefi.org/acpi/specs>
42
43if ACPI
44
45config ACPI_LEGACY_TABLES_LOOKUP
46 bool
47
48config ARCH_MIGHT_HAVE_ACPI_PDC
49 bool
50
51config ACPI_GENERIC_GSI
52 bool
53
54config ACPI_SYSTEM_POWER_STATES_SUPPORT
55 bool
56
57config ACPI_CCA_REQUIRED
58 bool
59
60config ACPI_DEBUGGER
61 bool "AML debugger interface"
62 select ACPI_DEBUG
63 help
64 Enable in-kernel debugging of AML facilities: statistics,
65 internal object dump, single step control method execution.
66 This is still under development, currently enabling this only
67 results in the compilation of the ACPICA debugger files.
68
69if ACPI_DEBUGGER
70
71config ACPI_DEBUGGER_USER
72 tristate "Userspace debugger accessiblity"
73 depends on DEBUG_FS
74 help
75 Export /sys/kernel/debug/acpi/acpidbg for userspace utilities
76 to access the debugger functionalities.
77
78endif
79
80config ACPI_SLEEP
81 bool
82 depends on SUSPEND || HIBERNATION
83 depends on ACPI_SYSTEM_POWER_STATES_SUPPORT
84 default y
85
86config ACPI_PROCFS_POWER
87 bool "Deprecated power /proc/acpi directories"
88 depends on X86 && PROC_FS
89 help
90 For backwards compatibility, this option allows
91 deprecated power /proc/acpi/ directories to exist, even when
92 they have been replaced by functions in /sys.
93 The deprecated directories (and their replacements) include:
94 /proc/acpi/battery/* (/sys/class/power_supply/*)
95 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
96 This option has no effect on /proc/acpi/ directories
97 and functions, which do not yet exist in /sys
98 This option, together with the proc directories, will be
99 deleted in the future.
100
101 Say N to delete power /proc/acpi/ directories that have moved to /sys/
102
103config ACPI_REV_OVERRIDE_POSSIBLE
104 bool "Allow supported ACPI revision to be overriden"
105 depends on X86
106 default y
107 help
108 The platform firmware on some systems expects Linux to return "5" as
109 the supported ACPI revision which makes it expose system configuration
110 information in a special way.
111
112 For example, based on what ACPI exports as the supported revision,
113 Dell XPS 13 (2015) configures its audio device to either work in HDA
114 mode or in I2S mode, where the former is supposed to be used on Linux
115 until the latter is fully supported (in the kernel as well as in user
116 space).
117
118 This option enables a DMI-based quirk for the above Dell machine (so
119 that HDA audio is exposed by the platform firmware to the kernel) and
120 makes it possible to force the kernel to return "5" as the supported
121 ACPI revision via the "acpi_rev_override" command line switch.
122
123config ACPI_EC_DEBUGFS
124 tristate "EC read/write access through /sys/kernel/debug/ec"
125 default n
126 help
127 Say N to disable Embedded Controller /sys/kernel/debug interface
128
129 Be aware that using this interface can confuse your Embedded
130 Controller in a way that a normal reboot is not enough. You then
131 have to power off your system, and remove the laptop battery for
132 some seconds.
133 An Embedded Controller typically is available on laptops and reads
134 sensor values like battery state and temperature.
135 The kernel accesses the EC through ACPI parsed code provided by BIOS
136 tables. This option allows to access the EC directly without ACPI
137 code being involved.
138 Thus this option is a debug option that helps to write ACPI drivers
139 and can be used to identify ACPI code or EC firmware bugs.
140
141config ACPI_AC
142 tristate "AC Adapter"
143 depends on X86
144 select POWER_SUPPLY
145 default y
146 help
147 This driver supports the AC Adapter object, which indicates
148 whether a system is on AC or not. If you have a system that can
149 switch between A/C and battery, say Y.
150
151 To compile this driver as a module, choose M here:
152 the module will be called ac.
153
154config ACPI_BATTERY
155 tristate "Battery"
156 depends on X86
157 select POWER_SUPPLY
158 default y
159 help
160 This driver adds support for battery information through
161 /proc/acpi/battery. If you have a mobile system with a battery,
162 say Y.
163
164 To compile this driver as a module, choose M here:
165 the module will be called battery.
166
167config ACPI_BUTTON
168 tristate "Button"
169 depends on INPUT
170 default y
171 help
172 This driver handles events on the power, sleep, and lid buttons.
173 A daemon reads events from input devices or via netlink and
174 performs user-defined actions such as shutting down the system.
175 This is necessary for software-controlled poweroff.
176
177 To compile this driver as a module, choose M here:
178 the module will be called button.
179
180config ACPI_VIDEO
181 tristate "Video"
182 depends on X86 && BACKLIGHT_CLASS_DEVICE
183 depends on INPUT
184 select THERMAL
185 help
186 This driver implements the ACPI Extensions For Display Adapters
187 for integrated graphics devices on motherboard, as specified in
188 ACPI 2.0 Specification, Appendix B. This supports basic operations
189 such as defining the video POST device, retrieving EDID information,
190 and setting up a video output.
191
192 To compile this driver as a module, choose M here:
193 the module will be called video.
194
195config ACPI_FAN
196 tristate "Fan"
197 depends on THERMAL
198 default y
199 help
200 This driver supports ACPI fan devices, allowing user-mode
201 applications to perform basic fan control (on, off, status).
202
203 To compile this driver as a module, choose M here:
204 the module will be called fan.
205
206config ACPI_DOCK
207 bool "Dock"
208 help
209 This driver supports ACPI-controlled docking stations and removable
210 drive bays such as the IBM Ultrabay and the Dell Module Bay.
211
212config ACPI_CPU_FREQ_PSS
213 bool
214 select THERMAL
215
216config ACPI_PROCESSOR_IDLE
217 bool
218 select CPU_IDLE
219
220config ACPI_CPPC_LIB
221 bool
222 depends on ACPI_PROCESSOR
223 depends on !ACPI_CPU_FREQ_PSS
224 select MAILBOX
225 select PCC
226 help
227 If this option is enabled, this file implements common functionality
228 to parse CPPC tables as described in the ACPI 5.1+ spec. The
229 routines implemented are meant to be used by other
230 drivers to control CPU performance using CPPC semantics.
231 If your platform does not support CPPC in firmware,
232 leave this option disabled.
233
234config ACPI_PROCESSOR
235 tristate "Processor"
236 depends on X86 || IA64 || ARM64
237 select ACPI_PROCESSOR_IDLE if X86 || IA64
238 select ACPI_CPU_FREQ_PSS if X86 || IA64
239 default y
240 help
241 This driver adds support for the ACPI Processor package. It is required
242 by several flavors of cpufreq performance-state, thermal, throttling and
243 idle drivers.
244
245 To compile this driver as a module, choose M here:
246 the module will be called processor.
247
248config ACPI_IPMI
249 tristate "IPMI"
250 depends on IPMI_SI
251 default n
252 help
253 This driver enables the ACPI to access the BMC controller. And it
254 uses the IPMI request/response message to communicate with BMC
255 controller, which can be found on on the server.
256
257 To compile this driver as a module, choose M here:
258 the module will be called as acpi_ipmi.
259
260config ACPI_HOTPLUG_CPU
261 bool
262 depends on ACPI_PROCESSOR && HOTPLUG_CPU
263 select ACPI_CONTAINER
264 default y
265
266config ACPI_PROCESSOR_AGGREGATOR
267 tristate "Processor Aggregator"
268 depends on ACPI_PROCESSOR
269 depends on X86
270 help
271 ACPI 4.0 defines processor Aggregator, which enables OS to perform
272 specific processor configuration and control that applies to all
273 processors in the platform. Currently only logical processor idling
274 is defined, which is to reduce power consumption. This driver
275 supports the new device.
276
277config ACPI_THERMAL
278 tristate "Thermal Zone"
279 depends on ACPI_PROCESSOR
280 select THERMAL
281 default y
282 help
283 This driver supports ACPI thermal zones. Most mobile and
284 some desktop systems support ACPI thermal zones. It is HIGHLY
285 recommended that this option be enabled, as your processor(s)
286 may be damaged without it.
287
288 To compile this driver as a module, choose M here:
289 the module will be called thermal.
290
291config ACPI_NUMA
292 bool "NUMA support"
293 depends on NUMA
294 depends on (X86 || IA64)
295 default y if IA64_GENERIC || IA64_SGI_SN2
296
297config ACPI_CUSTOM_DSDT_FILE
298 string "Custom DSDT Table file to include"
299 default ""
300 depends on !STANDALONE
301 help
302 This option supports a custom DSDT by linking it into the kernel.
303 See Documentation/acpi/dsdt-override.txt
304
305 Enter the full path name to the file which includes the AmlCode
306 declaration.
307
308 If unsure, don't enter a file name.
309
310config ACPI_CUSTOM_DSDT
311 bool
312 default ACPI_CUSTOM_DSDT_FILE != ""
313
314config ACPI_INITRD_TABLE_OVERRIDE
315 bool "ACPI tables override via initrd"
316 depends on BLK_DEV_INITRD && X86
317 default n
318 help
319 This option provides functionality to override arbitrary ACPI tables
320 via initrd. No functional change if no ACPI tables are passed via
321 initrd, therefore it's safe to say Y.
322 See Documentation/acpi/initrd_table_override.txt for details
323
324config ACPI_DEBUG
325 bool "Debug Statements"
326 default n
327 help
328 The ACPI subsystem can produce debug output. Saying Y enables this
329 output and increases the kernel size by around 50K.
330
331 Use the acpi.debug_layer and acpi.debug_level kernel command-line
332 parameters documented in Documentation/acpi/debug.txt and
333 Documentation/kernel-parameters.txt to control the type and
334 amount of debug output.
335
336config ACPI_PCI_SLOT
337 bool "PCI slot detection driver"
338 depends on SYSFS
339 default n
340 help
341 This driver creates entries in /sys/bus/pci/slots/ for all PCI
342 slots in the system. This can help correlate PCI bus addresses,
343 i.e., segment/bus/device/function tuples, with physical slots in
344 the system. If you are unsure, say N.
345
346config X86_PM_TIMER
347 bool "Power Management Timer Support" if EXPERT
348 depends on X86
349 default y
350 help
351 The Power Management Timer is available on all ACPI-capable,
352 in most cases even if ACPI is unusable or blacklisted.
353
354 This timing source is not affected by power management features
355 like aggressive processor idling, throttling, frequency and/or
356 voltage scaling, unlike the commonly used Time Stamp Counter
357 (TSC) timing source.
358
359 You should nearly always say Y here because many modern
360 systems require this timer.
361
362config ACPI_CONTAINER
363 bool "Container and Module Devices"
364 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
365 help
366 This driver supports ACPI Container and Module devices (IDs
367 ACPI0004, PNP0A05, and PNP0A06).
368
369 This helps support hotplug of nodes, CPUs, and memory.
370
371 To compile this driver as a module, choose M here:
372 the module will be called container.
373
374config ACPI_HOTPLUG_MEMORY
375 bool "Memory Hotplug"
376 depends on MEMORY_HOTPLUG
377 help
378 This driver supports ACPI memory hotplug. The driver
379 fields notifications on ACPI memory devices (PNP0C80),
380 which represent memory ranges that may be onlined or
381 offlined during runtime.
382
383 If your hardware and firmware do not support adding or
384 removing memory devices at runtime, you need not enable
385 this driver.
386
387 To compile this driver as a module, choose M here:
388 the module will be called acpi_memhotplug.
389
390config ACPI_HOTPLUG_IOAPIC
391 bool
392 depends on PCI
393 depends on X86_IO_APIC
394 default y
395
396config ACPI_SBS
397 tristate "Smart Battery System"
398 depends on X86
399 select POWER_SUPPLY
400 help
401 This driver supports the Smart Battery System, another
402 type of access to battery information, found on some laptops.
403
404 To compile this driver as a module, choose M here:
405 the modules will be called sbs and sbshc.
406
407config ACPI_HED
408 tristate "Hardware Error Device"
409 help
410 This driver supports the Hardware Error Device (PNP0C33),
411 which is used to report some hardware errors notified via
412 SCI, mainly the corrected errors.
413
414config ACPI_CUSTOM_METHOD
415 tristate "Allow ACPI methods to be inserted/replaced at run time"
416 depends on DEBUG_FS
417 default n
418 help
419 This debug facility allows ACPI AML methods to be inserted and/or
420 replaced without rebooting the system. For details refer to:
421 Documentation/acpi/method-customizing.txt.
422
423 NOTE: This option is security sensitive, because it allows arbitrary
424 kernel memory to be written to by root (uid=0) users, allowing them
425 to bypass certain security measures (e.g. if root is not allowed to
426 load additional kernel modules after boot, this feature may be used
427 to override that restriction).
428
429config ACPI_BGRT
430 bool "Boottime Graphics Resource Table support"
431 depends on EFI && X86
432 help
433 This driver adds support for exposing the ACPI Boottime Graphics
434 Resource Table, which allows the operating system to obtain
435 data from the firmware boot splash. It will appear under
436 /sys/firmware/acpi/bgrt/ .
437
438config ACPI_REDUCED_HARDWARE_ONLY
439 bool "Hardware-reduced ACPI support only" if EXPERT
440 def_bool n
441 help
442 This config item changes the way the ACPI code is built. When this
443 option is selected, the kernel will use a specialized version of
444 ACPICA that ONLY supports the ACPI "reduced hardware" mode. The
445 resulting kernel will be smaller but it will also be restricted to
446 running in ACPI reduced hardware mode ONLY.
447
448 If you are unsure what to do, do not enable this option.
449
450config ACPI_NFIT
451 tristate "ACPI NVDIMM Firmware Interface Table (NFIT)"
452 depends on PHYS_ADDR_T_64BIT
453 depends on BLK_DEV
454 depends on ARCH_HAS_MMIO_FLUSH
455 select LIBNVDIMM
456 help
457 Infrastructure to probe ACPI 6 compliant platforms for
458 NVDIMMs (NFIT) and register a libnvdimm device tree. In
459 addition to storage devices this also enables libnvdimm to pass
460 ACPI._DSM messages for platform/dimm configuration.
461
462 To compile this driver as a module, choose M here:
463 the module will be called nfit.
464
465config ACPI_NFIT_DEBUG
466 bool "NFIT DSM debug"
467 depends on ACPI_NFIT
468 depends on DYNAMIC_DEBUG
469 default n
470 help
471 Enabling this option causes the nfit driver to dump the
472 input and output buffers of _DSM operations on the ACPI0012
473 device and its children. This can be very verbose, so leave
474 it disabled unless you are debugging a hardware / firmware
475 issue.
476
477source "drivers/acpi/apei/Kconfig"
478
479config ACPI_EXTLOG
480 tristate "Extended Error Log support"
481 depends on X86_MCE && X86_LOCAL_APIC
482 select UEFI_CPER
483 select RAS
484 default n
485 help
486 Certain usages such as Predictive Failure Analysis (PFA) require
487 more information about the error than what can be described in
488 processor machine check banks. Most server processors log
489 additional information about the error in processor uncore
490 registers. Since the addresses and layout of these registers vary
491 widely from one processor to another, system software cannot
492 readily make use of them. To complicate matters further, some of
493 the additional error information cannot be constructed without
494 detailed knowledge about platform topology.
495
496 Enhanced MCA Logging allows firmware to provide additional error
497 information to system software, synchronous with MCE or CMCI. This
498 driver adds support for that functionality with corresponding
499 tracepoint which carries that information to userspace.
500
501menuconfig PMIC_OPREGION
502 bool "PMIC (Power Management Integrated Circuit) operation region support"
503 help
504 Select this option to enable support for ACPI operation
505 region of the PMIC chip. The operation region can be used
506 to control power rails and sensor reading/writing on the
507 PMIC chip.
508
509if PMIC_OPREGION
510config CRC_PMIC_OPREGION
511 bool "ACPI operation region support for CrystalCove PMIC"
512 depends on INTEL_SOC_PMIC
513 help
514 This config adds ACPI operation region support for CrystalCove PMIC.
515
516config XPOWER_PMIC_OPREGION
517 bool "ACPI operation region support for XPower AXP288 PMIC"
518 depends on AXP288_ADC = y
519 help
520 This config adds ACPI operation region support for XPower AXP288 PMIC.
521
522endif
523
524endif # ACPI