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 525