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compatibility, this option allows 71 deprecated power /proc/acpi/ directories to exist, even when 72 they have been replaced by functions in /sys. 73 The deprecated directories (and their replacements) include: 74 /proc/acpi/battery/* (/sys/class/power_supply/*) 75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