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compatibility, this option allows 71 deprecated power /proc/acpi/ directories to exist, even when 72 they have been replaced by functions in /sys. 73 The deprecated directories (and their replacements) include: 74 /proc/acpi/battery/* (/sys/class/power_supply/*) 75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_EC_DEBUGFS 84 tristate "EC read/write access through /sys/kernel/debug/ec" 85 default n 86 help 87 Say N to disable Embedded Controller /sys/kernel/debug interface 88 89 Be aware that using this interface can confuse your Embedded 90 Controller in a way that a normal reboot is not enough. You then 91 have to power off your system, and remove the laptop battery for 92 some seconds. 93 An Embedded Controller typically is available on laptops and reads 94 sensor values like battery state and temperature. 95 The kernel accesses the EC through ACPI parsed code provided by BIOS 96 tables. This option allows to access the EC directly without ACPI 97 code being involved. 98 Thus this option is a debug option that helps to write ACPI drivers 99 and can be used to identify ACPI code or EC firmware bugs. 100 101config ACPI_AC 102 tristate "AC Adapter" 103 depends on X86 104 select POWER_SUPPLY 105 default y 106 help 107 This driver supports the AC Adapter object, which indicates 108 whether a system is on AC or not. If you have a system that can 109 switch between A/C and battery, say Y. 110 111 To compile this driver as a module, choose M here: 112 the module will be called ac. 113 114config ACPI_BATTERY 115 tristate "Battery" 116 depends on X86 117 select POWER_SUPPLY 118 default y 119 help 120 This driver adds support for battery information through 121 /proc/acpi/battery. If you have a mobile system with a battery, 122 say Y. 123 124 To compile this driver as a module, choose M here: 125 the module will be called battery. 126 127config ACPI_BUTTON 128 tristate "Button" 129 depends on INPUT 130 default y 131 help 132 This driver handles events on the power, sleep, and lid buttons. 133 A daemon reads events from input devices or via netlink and 134 performs user-defined actions such as shutting down the system. 135 This is necessary for software-controlled poweroff. 136 137 To compile this driver as a module, choose M here: 138 the module will be called button. 139 140config ACPI_VIDEO 141 tristate "Video" 142 depends on X86 && BACKLIGHT_CLASS_DEVICE 143 depends on INPUT 144 select THERMAL 145 help 146 This driver implements the ACPI Extensions For Display Adapters 147 for integrated graphics devices on motherboard, as specified in 148 ACPI 2.0 Specification, Appendix B. This supports basic operations 149 such as defining the video POST device, retrieving EDID information, 150 and setting up a video output. 151 152 To compile this driver as a module, choose M here: 153 the module will be called video. 154 155config ACPI_FAN 156 tristate "Fan" 157 depends on THERMAL 158 default y 159 help 160 This driver supports ACPI fan devices, allowing user-mode 161 applications to perform basic fan control (on, off, status). 162 163 To compile this driver as a module, choose M here: 164 the module will be called fan. 165 166config ACPI_DOCK 167 bool "Dock" 168 help 169 This driver supports ACPI-controlled docking stations and removable 170 drive bays such as the IBM Ultrabay and the Dell Module Bay. 171 172config ACPI_PROCESSOR 173 tristate "Processor" 174 select THERMAL 175 select CPU_IDLE 176 depends on X86 || IA64 177 default y 178 help 179 This driver installs ACPI as the idle handler for Linux and uses 180 ACPI C2 and C3 processor states to save power on systems that 181 support it. It is required by several flavors of cpufreq 182 performance-state drivers. 183 184 To compile this driver as a module, choose M here: 185 the module will be called processor. 186 187config ACPI_IPMI 188 tristate "IPMI" 189 depends on IPMI_SI 190 default n 191 help 192 This driver enables the ACPI to access the BMC controller. And it 193 uses the IPMI request/response message to communicate with BMC 194 controller, which can be found on on the server. 195 196 To compile this driver as a module, choose M here: 197 the module will be called as acpi_ipmi. 198 199config ACPI_HOTPLUG_CPU 200 bool 201 depends on ACPI_PROCESSOR && HOTPLUG_CPU 202 select ACPI_CONTAINER 203 default y 204 205config ACPI_PROCESSOR_AGGREGATOR 206 tristate "Processor Aggregator" 207 depends on ACPI_PROCESSOR 208 depends on X86 209 help 210 ACPI 4.0 defines processor Aggregator, which enables OS to perform 211 specific processor configuration and control that applies to all 212 processors in the platform. Currently only logical processor idling 213 is defined, which is to reduce power consumption. This driver 214 supports the new device. 215 216config ACPI_THERMAL 217 tristate "Thermal Zone" 218 depends on ACPI_PROCESSOR 219 select THERMAL 220 default y 221 help 222 This driver supports ACPI thermal zones. Most mobile and 223 some desktop systems support ACPI thermal zones. It is HIGHLY 224 recommended that this option be enabled, as your processor(s) 225 may be damaged without it. 226 227 To compile this driver as a module, choose M here: 228 the module will be called thermal. 229 230config ACPI_NUMA 231 bool "NUMA support" 232 depends on NUMA 233 depends on (X86 || IA64) 234 default y if IA64_GENERIC || IA64_SGI_SN2 235 236config ACPI_CUSTOM_DSDT_FILE 237 string "Custom DSDT Table file to include" 238 default "" 239 depends on !STANDALONE 240 help 241 This option supports a custom DSDT by linking it into the kernel. 242 See Documentation/acpi/dsdt-override.txt 243 244 Enter the full path name to the file which includes the AmlCode 245 declaration. 246 247 If unsure, don't enter a file name. 248 249config ACPI_CUSTOM_DSDT 250 bool 251 default ACPI_CUSTOM_DSDT_FILE != "" 252 253config ACPI_INITRD_TABLE_OVERRIDE 254 bool "ACPI tables override via initrd" 255 depends on BLK_DEV_INITRD && X86 256 default n 257 help 258 This option provides functionality to override arbitrary ACPI tables 259 via initrd. No functional change if no ACPI tables are passed via 260 initrd, therefore it's safe to say Y. 261 See Documentation/acpi/initrd_table_override.txt for details 262 263config ACPI_DEBUG 264 bool "Debug Statements" 265 default n 266 help 267 The ACPI subsystem can produce debug output. Saying Y enables this 268 output and increases the kernel size by around 50K. 269 270 Use the acpi.debug_layer and acpi.debug_level kernel command-line 271 parameters documented in Documentation/acpi/debug.txt and 272 Documentation/kernel-parameters.txt to control the type and 273 amount of debug output. 274 275config ACPI_PCI_SLOT 276 bool "PCI slot detection driver" 277 depends on SYSFS 278 default n 279 help 280 This driver creates entries in /sys/bus/pci/slots/ for all PCI 281 slots in the system. This can help correlate PCI bus addresses, 282 i.e., segment/bus/device/function tuples, with physical slots in 283 the system. If you are unsure, say N. 284 285config X86_PM_TIMER 286 bool "Power Management Timer Support" if EXPERT 287 depends on X86 288 default y 289 help 290 The Power Management Timer is available on all ACPI-capable, 291 in most cases even if ACPI is unusable or blacklisted. 292 293 This timing source is not affected by power management features 294 like aggressive processor idling, throttling, frequency and/or 295 voltage scaling, unlike the commonly used Time Stamp Counter 296 (TSC) timing source. 297 298 You should nearly always say Y here because many modern 299 systems require this timer. 300 301config ACPI_CONTAINER 302 bool "Container and Module Devices" 303 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) 304 help 305 This driver supports ACPI Container and Module devices (IDs 306 ACPI0004, PNP0A05, and PNP0A06). 307 308 This helps support hotplug of nodes, CPUs, and memory. 309 310 To compile this driver as a module, choose M here: 311 the module will be called container. 312 313config ACPI_HOTPLUG_MEMORY 314 bool "Memory Hotplug" 315 depends on MEMORY_HOTPLUG 316 help 317 This driver supports ACPI memory hotplug. The driver 318 fields notifications on ACPI memory devices (PNP0C80), 319 which represent memory ranges that may be onlined or 320 offlined during runtime. 321 322 If your hardware and firmware do not support adding or 323 removing memory devices at runtime, you need not enable 324 this driver. 325 326 To compile this driver as a module, choose M here: 327 the module will be called acpi_memhotplug. 328 329config ACPI_HOTPLUG_IOAPIC 330 bool 331 depends on PCI 332 depends on X86_IO_APIC 333 default y 334 335config ACPI_SBS 336 tristate "Smart Battery System" 337 depends on X86 338 select POWER_SUPPLY 339 help 340 This driver supports the Smart Battery System, another 341 type of access to battery information, found on some laptops. 342 343 To compile this driver as a module, choose M here: 344 the modules will be called sbs and sbshc. 345 346config ACPI_HED 347 tristate "Hardware Error Device" 348 help 349 This driver supports the Hardware Error Device (PNP0C33), 350 which is used to report some hardware errors notified via 351 SCI, mainly the corrected errors. 352 353config ACPI_CUSTOM_METHOD 354 tristate "Allow ACPI methods to be inserted/replaced at run time" 355 depends on DEBUG_FS 356 default n 357 help 358 This debug facility allows ACPI AML methods to be inserted and/or 359 replaced without rebooting the system. For details refer to: 360 Documentation/acpi/method-customizing.txt. 361 362 NOTE: This option is security sensitive, because it allows arbitrary 363 kernel memory to be written to by root (uid=0) users, allowing them 364 to bypass certain security measures (e.g. if root is not allowed to 365 load additional kernel modules after boot, this feature may be used 366 to override that restriction). 367 368config ACPI_BGRT 369 bool "Boottime Graphics Resource Table support" 370 depends on EFI && X86 371 help 372 This driver adds support for exposing the ACPI Boottime Graphics 373 Resource Table, which allows the operating system to obtain 374 data from the firmware boot splash. It will appear under 375 /sys/firmware/acpi/bgrt/ . 376 377config ACPI_REDUCED_HARDWARE_ONLY 378 bool "Hardware-reduced ACPI support only" if EXPERT 379 def_bool n 380 help 381 This config item changes the way the ACPI code is built. When this 382 option is selected, the kernel will use a specialized version of 383 ACPICA that ONLY supports the ACPI "reduced hardware" mode. The 384 resulting kernel will be smaller but it will also be restricted to 385 running in ACPI reduced hardware mode ONLY. 386 387 If you are unsure what to do, do not enable this option. 388 389config ACPI_NFIT 390 tristate "ACPI NVDIMM Firmware Interface Table (NFIT)" 391 depends on PHYS_ADDR_T_64BIT 392 depends on BLK_DEV 393 select LIBNVDIMM 394 help 395 Infrastructure to probe ACPI 6 compliant platforms for 396 NVDIMMs (NFIT) and register a libnvdimm device tree. In 397 addition to storage devices this also enables libnvdimm to pass 398 ACPI._DSM messages for platform/dimm configuration. 399 400 To compile this driver as a module, choose M here: 401 the module will be called nfit. 402 403config ACPI_NFIT_DEBUG 404 bool "NFIT DSM debug" 405 depends on ACPI_NFIT 406 depends on DYNAMIC_DEBUG 407 default n 408 help 409 Enabling this option causes the nfit driver to dump the 410 input and output buffers of _DSM operations on the ACPI0012 411 device and its children. This can be very verbose, so leave 412 it disabled unless you are debugging a hardware / firmware 413 issue. 414 415source "drivers/acpi/apei/Kconfig" 416 417config ACPI_EXTLOG 418 tristate "Extended Error Log support" 419 depends on X86_MCE && X86_LOCAL_APIC 420 select UEFI_CPER 421 select RAS 422 default n 423 help 424 Certain usages such as Predictive Failure Analysis (PFA) require 425 more information about the error than what can be described in 426 processor machine check banks. Most server processors log 427 additional information about the error in processor uncore 428 registers. Since the addresses and layout of these registers vary 429 widely from one processor to another, system software cannot 430 readily make use of them. To complicate matters further, some of 431 the additional error information cannot be constructed without 432 detailed knowledge about platform topology. 433 434 Enhanced MCA Logging allows firmware to provide additional error 435 information to system software, synchronous with MCE or CMCI. This 436 driver adds support for that functionality with corresponding 437 tracepoint which carries that information to userspace. 438 439menuconfig PMIC_OPREGION 440 bool "PMIC (Power Management Integrated Circuit) operation region support" 441 help 442 Select this option to enable support for ACPI operation 443 region of the PMIC chip. The operation region can be used 444 to control power rails and sensor reading/writing on the 445 PMIC chip. 446 447if PMIC_OPREGION 448config CRC_PMIC_OPREGION 449 bool "ACPI operation region support for CrystalCove PMIC" 450 depends on INTEL_SOC_PMIC 451 help 452 This config adds ACPI operation region support for CrystalCove PMIC. 453 454config XPOWER_PMIC_OPREGION 455 bool "ACPI operation region support for XPower AXP288 PMIC" 456 depends on AXP288_ADC = y 457 help 458 This config adds ACPI operation region support for XPower AXP288 PMIC. 459 460endif 461 462endif # ACPI 463