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 9 depends on PCI 10 select PNP 11 default y if (IA64 || X86) 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_CSTATE 217 def_bool y 218 depends on IA64 || X86 219 220config ACPI_PROCESSOR_IDLE 221 bool 222 select CPU_IDLE 223 224config ACPI_CPPC_LIB 225 bool 226 depends on ACPI_PROCESSOR 227 depends on !ACPI_CPU_FREQ_PSS 228 select MAILBOX 229 select PCC 230 help 231 If this option is enabled, this file implements common functionality 232 to parse CPPC tables as described in the ACPI 5.1+ spec. The 233 routines implemented are meant to be used by other 234 drivers to control CPU performance using CPPC semantics. 235 If your platform does not support CPPC in firmware, 236 leave this option disabled. 237 238config ACPI_PROCESSOR 239 tristate "Processor" 240 depends on X86 || IA64 || ARM64 241 select ACPI_PROCESSOR_IDLE 242 select ACPI_CPU_FREQ_PSS if X86 || IA64 243 default y 244 help 245 This driver adds support for the ACPI Processor package. It is required 246 by several flavors of cpufreq performance-state, thermal, throttling and 247 idle drivers. 248 249 To compile this driver as a module, choose M here: 250 the module will be called processor. 251 252config ACPI_IPMI 253 tristate "IPMI" 254 depends on IPMI_SI 255 default n 256 help 257 This driver enables the ACPI to access the BMC controller. And it 258 uses the IPMI request/response message to communicate with BMC 259 controller, which can be found on on the server. 260 261 To compile this driver as a module, choose M here: 262 the module will be called as acpi_ipmi. 263 264config ACPI_HOTPLUG_CPU 265 bool 266 depends on ACPI_PROCESSOR && HOTPLUG_CPU 267 select ACPI_CONTAINER 268 default y 269 270config ACPI_PROCESSOR_AGGREGATOR 271 tristate "Processor Aggregator" 272 depends on ACPI_PROCESSOR 273 depends on X86 274 help 275 ACPI 4.0 defines processor Aggregator, which enables OS to perform 276 specific processor configuration and control that applies to all 277 processors in the platform. Currently only logical processor idling 278 is defined, which is to reduce power consumption. This driver 279 supports the new device. 280 281config ACPI_THERMAL 282 tristate "Thermal Zone" 283 depends on ACPI_PROCESSOR 284 select THERMAL 285 default y 286 help 287 This driver supports ACPI thermal zones. Most mobile and 288 some desktop systems support ACPI thermal zones. It is HIGHLY 289 recommended that this option be enabled, as your processor(s) 290 may be damaged without it. 291 292 To compile this driver as a module, choose M here: 293 the module will be called thermal. 294 295config ACPI_NUMA 296 bool "NUMA support" 297 depends on NUMA 298 depends on (X86 || IA64 || ARM64) 299 default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64 300 301config ACPI_CUSTOM_DSDT_FILE 302 string "Custom DSDT Table file to include" 303 default "" 304 depends on !STANDALONE 305 help 306 This option supports a custom DSDT by linking it into the kernel. 307 See Documentation/acpi/dsdt-override.txt 308 309 Enter the full path name to the file which includes the AmlCode 310 declaration. 311 312 If unsure, don't enter a file name. 313 314config ACPI_CUSTOM_DSDT 315 bool 316 default ACPI_CUSTOM_DSDT_FILE != "" 317 318config ARCH_HAS_ACPI_TABLE_UPGRADE 319 def_bool n 320 321config ACPI_TABLE_UPGRADE 322 bool "Allow upgrading ACPI tables via initrd" 323 depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE 324 default y 325 help 326 This option provides functionality to upgrade arbitrary ACPI tables 327 via initrd. No functional change if no ACPI tables are passed via 328 initrd, therefore it's safe to say Y. 329 See Documentation/acpi/initrd_table_override.txt for details 330 331config ACPI_DEBUG 332 bool "Debug Statements" 333 default n 334 help 335 The ACPI subsystem can produce debug output. Saying Y enables this 336 output and increases the kernel size by around 50K. 337 338 Use the acpi.debug_layer and acpi.debug_level kernel command-line 339 parameters documented in Documentation/acpi/debug.txt and 340 Documentation/kernel-parameters.txt to control the type and 341 amount of debug output. 342 343config ACPI_PCI_SLOT 344 bool "PCI slot detection driver" 345 depends on SYSFS 346 default n 347 help 348 This driver creates entries in /sys/bus/pci/slots/ for all PCI 349 slots in the system. This can help correlate PCI bus addresses, 350 i.e., segment/bus/device/function tuples, with physical slots in 351 the system. If you are unsure, say N. 352 353config X86_PM_TIMER 354 bool "Power Management Timer Support" if EXPERT 355 depends on X86 356 default y 357 help 358 The Power Management Timer is available on all ACPI-capable, 359 in most cases even if ACPI is unusable or blacklisted. 360 361 This timing source is not affected by power management features 362 like aggressive processor idling, throttling, frequency and/or 363 voltage scaling, unlike the commonly used Time Stamp Counter 364 (TSC) timing source. 365 366 You should nearly always say Y here because many modern 367 systems require this timer. 368 369config ACPI_CONTAINER 370 bool "Container and Module Devices" 371 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) 372 help 373 This driver supports ACPI Container and Module devices (IDs 374 ACPI0004, PNP0A05, and PNP0A06). 375 376 This helps support hotplug of nodes, CPUs, and memory. 377 378 To compile this driver as a module, choose M here: 379 the module will be called container. 380 381config ACPI_HOTPLUG_MEMORY 382 bool "Memory Hotplug" 383 depends on MEMORY_HOTPLUG 384 help 385 This driver supports ACPI memory hotplug. The driver 386 fields notifications on ACPI memory devices (PNP0C80), 387 which represent memory ranges that may be onlined or 388 offlined during runtime. 389 390 If your hardware and firmware do not support adding or 391 removing memory devices at runtime, you need not enable 392 this driver. 393 394 To compile this driver as a module, choose M here: 395 the module will be called acpi_memhotplug. 396 397config ACPI_HOTPLUG_IOAPIC 398 bool 399 depends on PCI 400 depends on X86_IO_APIC 401 default y 402 403config ACPI_SBS 404 tristate "Smart Battery System" 405 depends on X86 406 select POWER_SUPPLY 407 help 408 This driver supports the Smart Battery System, another 409 type of access to battery information, found on some laptops. 410 411 To compile this driver as a module, choose M here: 412 the modules will be called sbs and sbshc. 413 414config ACPI_HED 415 tristate "Hardware Error Device" 416 help 417 This driver supports the Hardware Error Device (PNP0C33), 418 which is used to report some hardware errors notified via 419 SCI, mainly the corrected errors. 420 421config ACPI_CUSTOM_METHOD 422 tristate "Allow ACPI methods to be inserted/replaced at run time" 423 depends on DEBUG_FS 424 default n 425 help 426 This debug facility allows ACPI AML methods to be inserted and/or 427 replaced without rebooting the system. For details refer to: 428 Documentation/acpi/method-customizing.txt. 429 430 NOTE: This option is security sensitive, because it allows arbitrary 431 kernel memory to be written to by root (uid=0) users, allowing them 432 to bypass certain security measures (e.g. if root is not allowed to 433 load additional kernel modules after boot, this feature may be used 434 to override that restriction). 435 436config ACPI_BGRT 437 bool "Boottime Graphics Resource Table support" 438 depends on EFI && X86 439 help 440 This driver adds support for exposing the ACPI Boottime Graphics 441 Resource Table, which allows the operating system to obtain 442 data from the firmware boot splash. It will appear under 443 /sys/firmware/acpi/bgrt/ . 444 445config ACPI_REDUCED_HARDWARE_ONLY 446 bool "Hardware-reduced ACPI support only" if EXPERT 447 def_bool n 448 help 449 This config item changes the way the ACPI code is built. When this 450 option is selected, the kernel will use a specialized version of 451 ACPICA that ONLY supports the ACPI "reduced hardware" mode. The 452 resulting kernel will be smaller but it will also be restricted to 453 running in ACPI reduced hardware mode ONLY. 454 455 If you are unsure what to do, do not enable this option. 456 457source "drivers/acpi/nfit/Kconfig" 458 459source "drivers/acpi/apei/Kconfig" 460source "drivers/acpi/dptf/Kconfig" 461 462config ACPI_EXTLOG 463 tristate "Extended Error Log support" 464 depends on X86_MCE && X86_LOCAL_APIC 465 select UEFI_CPER 466 select RAS 467 default n 468 help 469 Certain usages such as Predictive Failure Analysis (PFA) require 470 more information about the error than what can be described in 471 processor machine check banks. Most server processors log 472 additional information about the error in processor uncore 473 registers. Since the addresses and layout of these registers vary 474 widely from one processor to another, system software cannot 475 readily make use of them. To complicate matters further, some of 476 the additional error information cannot be constructed without 477 detailed knowledge about platform topology. 478 479 Enhanced MCA Logging allows firmware to provide additional error 480 information to system software, synchronous with MCE or CMCI. This 481 driver adds support for that functionality with corresponding 482 tracepoint which carries that information to userspace. 483 484menuconfig PMIC_OPREGION 485 bool "PMIC (Power Management Integrated Circuit) operation region support" 486 help 487 Select this option to enable support for ACPI operation 488 region of the PMIC chip. The operation region can be used 489 to control power rails and sensor reading/writing on the 490 PMIC chip. 491 492if PMIC_OPREGION 493config CRC_PMIC_OPREGION 494 bool "ACPI operation region support for CrystalCove PMIC" 495 depends on INTEL_SOC_PMIC 496 help 497 This config adds ACPI operation region support for CrystalCove PMIC. 498 499config XPOWER_PMIC_OPREGION 500 bool "ACPI operation region support for XPower AXP288 PMIC" 501 depends on AXP288_ADC = y 502 help 503 This config adds ACPI operation region support for XPower AXP288 PMIC. 504 505config BXT_WC_PMIC_OPREGION 506 bool "ACPI operation region support for BXT WhiskeyCove PMIC" 507 depends on INTEL_SOC_PMIC 508 help 509 This config adds ACPI operation region support for BXT WhiskeyCove PMIC. 510 511endif 512 513config ACPI_CONFIGFS 514 tristate "ACPI configfs support" 515 select CONFIGFS_FS 516 help 517 Select this option to enable support for ACPI configuration from 518 userspace. The configurable ACPI groups will be visible under 519 /config/acpi, assuming configfs is mounted under /config. 520 521endif # ACPI 522