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 depends on PM 11 select PNP 12 default y 13 help 14 Advanced Configuration and Power Interface (ACPI) support for 15 Linux requires an ACPI-compliant platform (hardware/firmware), 16 and assumes the presence of OS-directed configuration and power 17 management (OSPM) software. This option will enlarge your 18 kernel by about 70K. 19 20 Linux ACPI provides a robust functional replacement for several 21 legacy configuration and power management interfaces, including 22 the Plug-and-Play BIOS specification (PnP BIOS), the 23 MultiProcessor Specification (MPS), and the Advanced Power 24 Management (APM) specification. If both ACPI and APM support 25 are configured, ACPI is used. 26 27 The project home page for the Linux ACPI subsystem is here: 28 <http://www.lesswatts.org/projects/acpi/> 29 30 Linux support for ACPI is based on Intel Corporation's ACPI 31 Component Architecture (ACPI CA). For more information on the 32 ACPI CA, see: 33 <http://acpica.org/> 34 35 ACPI is an open industry specification co-developed by 36 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. 37 The specification is available at: 38 <http://www.acpi.info> 39 40if ACPI 41 42config ACPI_SLEEP 43 bool 44 depends on SUSPEND || HIBERNATION 45 default y 46 47config ACPI_PROCFS 48 bool "Deprecated /proc/acpi files" 49 depends on PROC_FS 50 help 51 For backwards compatibility, this option allows 52 deprecated /proc/acpi/ files to exist, even when 53 they have been replaced by functions in /sys. 54 The deprecated files (and their replacements) include: 55 56 /proc/acpi/processor/*/throttling (/sys/class/thermal/ 57 cooling_device*/*) 58 /proc/acpi/video/*/brightness (/sys/class/backlight/) 59 /proc/acpi/thermal_zone/*/* (/sys/class/thermal/) 60 This option has no effect on /proc/acpi/ files 61 and functions which do not yet exist in /sys. 62 63 Say N to delete /proc/acpi/ files that have moved to /sys/ 64 65config ACPI_PROCFS_POWER 66 bool "Deprecated power /proc/acpi directories" 67 depends on PROC_FS 68 help 69 For backwards compatibility, this option allows 70 deprecated power /proc/acpi/ directories to exist, even when 71 they have been replaced by functions in /sys. 72 The deprecated directories (and their replacements) include: 73 /proc/acpi/battery/* (/sys/class/power_supply/*) 74 /proc/acpi/ac_adapter/* (sys/class/power_supply/*) 75 This option has no effect on /proc/acpi/ directories 76 and functions, which do not yet exist in /sys 77 78 Say N to delete power /proc/acpi/ directories that have moved to /sys/ 79 80config ACPI_POWER_METER 81 tristate "ACPI 4.0 power meter" 82 depends on HWMON 83 help 84 This driver exposes ACPI 4.0 power meters as hardware monitoring 85 devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware 86 and a power meter. 87 88 To compile this driver as a module, choose M here: 89 the module will be called power-meter. 90 91config ACPI_EC_DEBUGFS 92 tristate "EC read/write access through /sys/kernel/debug/ec" 93 default n 94 help 95 Say N to disable Embedded Controller /sys/kernel/debug interface 96 97 Be aware that using this interface can confuse your Embedded 98 Controller in a way that a normal reboot is not enough. You then 99 have to power off your system, and remove the laptop battery for 100 some seconds. 101 An Embedded Controller typically is available on laptops and reads 102 sensor values like battery state and temperature. 103 The kernel accesses the EC through ACPI parsed code provided by BIOS 104 tables. This option allows to access the EC directly without ACPI 105 code being involved. 106 Thus this option is a debug option that helps to write ACPI drivers 107 and can be used to identify ACPI code or EC firmware bugs. 108 109config ACPI_PROC_EVENT 110 bool "Deprecated /proc/acpi/event support" 111 depends on PROC_FS 112 default y 113 help 114 A user-space daemon, acpid, typically reads /proc/acpi/event 115 and handles all ACPI-generated events. 116 117 These events are now delivered to user-space either 118 via the input layer or as netlink events. 119 120 This build option enables the old code for legacy 121 user-space implementation. After some time, this will 122 be moved under CONFIG_ACPI_PROCFS, and then deleted. 123 124 Say Y here to retain the old behaviour. Say N if your 125 user-space is newer than kernel 2.6.23 (September 2007). 126 127config ACPI_AC 128 tristate "AC Adapter" 129 depends on X86 130 select POWER_SUPPLY 131 default y 132 help 133 This driver supports the AC Adapter object, which indicates 134 whether a system is on AC or not. If you have a system that can 135 switch between A/C and battery, say Y. 136 137 To compile this driver as a module, choose M here: 138 the module will be called ac. 139 140config ACPI_BATTERY 141 tristate "Battery" 142 depends on X86 143 select POWER_SUPPLY 144 default y 145 help 146 This driver adds support for battery information through 147 /proc/acpi/battery. If you have a mobile system with a battery, 148 say Y. 149 150 To compile this driver as a module, choose M here: 151 the module will be called battery. 152 153config ACPI_BUTTON 154 tristate "Button" 155 depends on INPUT 156 default y 157 help 158 This driver handles events on the power, sleep, and lid buttons. 159 A daemon reads /proc/acpi/event and perform user-defined actions 160 such as shutting down the system. This is necessary for 161 software-controlled poweroff. 162 163 To compile this driver as a module, choose M here: 164 the module will be called button. 165 166config ACPI_VIDEO 167 tristate "Video" 168 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 169 depends on INPUT 170 select THERMAL 171 help 172 This driver implements the ACPI Extensions For Display Adapters 173 for integrated graphics devices on motherboard, as specified in 174 ACPI 2.0 Specification, Appendix B. This supports basic operations 175 such as defining the video POST device, retrieving EDID information, 176 and setting up a video output. 177 178 To compile this driver as a module, choose M here: 179 the module will be called video. 180 181config ACPI_FAN 182 tristate "Fan" 183 select THERMAL 184 default y 185 help 186 This driver supports ACPI fan devices, allowing user-mode 187 applications to perform basic fan control (on, off, status). 188 189 To compile this driver as a module, choose M here: 190 the module will be called fan. 191 192config ACPI_DOCK 193 bool "Dock" 194 depends on EXPERIMENTAL 195 help 196 This driver supports ACPI-controlled docking stations and removable 197 drive bays such as the IBM Ultrabay and the Dell Module Bay. 198 199config ACPI_PROCESSOR 200 tristate "Processor" 201 select THERMAL 202 select CPU_IDLE 203 default y 204 help 205 This driver installs ACPI as the idle handler for Linux and uses 206 ACPI C2 and C3 processor states to save power on systems that 207 support it. It is required by several flavors of cpufreq 208 performance-state drivers. 209 210 To compile this driver as a module, choose M here: 211 the module will be called processor. 212 213config ACPI_HOTPLUG_CPU 214 bool 215 depends on ACPI_PROCESSOR && HOTPLUG_CPU 216 select ACPI_CONTAINER 217 default y 218 219config ACPI_PROCESSOR_AGGREGATOR 220 tristate "Processor Aggregator" 221 depends on ACPI_PROCESSOR 222 depends on EXPERIMENTAL 223 depends on X86 224 help 225 ACPI 4.0 defines processor Aggregator, which enables OS to perform 226 specific processor configuration and control that applies to all 227 processors in the platform. Currently only logical processor idling 228 is defined, which is to reduce power consumption. This driver 229 supports the new device. 230 231config ACPI_THERMAL 232 tristate "Thermal Zone" 233 depends on ACPI_PROCESSOR 234 select THERMAL 235 default y 236 help 237 This driver supports ACPI thermal zones. Most mobile and 238 some desktop systems support ACPI thermal zones. It is HIGHLY 239 recommended that this option be enabled, as your processor(s) 240 may be damaged without it. 241 242 To compile this driver as a module, choose M here: 243 the module will be called thermal. 244 245config ACPI_NUMA 246 bool "NUMA support" 247 depends on NUMA 248 depends on (X86 || IA64) 249 default y if IA64_GENERIC || IA64_SGI_SN2 250 251config ACPI_CUSTOM_DSDT_FILE 252 string "Custom DSDT Table file to include" 253 default "" 254 depends on !STANDALONE 255 help 256 This option supports a custom DSDT by linking it into the kernel. 257 See Documentation/acpi/dsdt-override.txt 258 259 Enter the full path name to the file which includes the AmlCode 260 declaration. 261 262 If unsure, don't enter a file name. 263 264config ACPI_CUSTOM_DSDT 265 bool 266 default ACPI_CUSTOM_DSDT_FILE != "" 267 268config ACPI_BLACKLIST_YEAR 269 int "Disable ACPI for systems before Jan 1st this year" if X86_32 270 default 0 271 help 272 Enter a 4-digit year, e.g., 2001, to disable ACPI by default 273 on platforms with DMI BIOS date before January 1st that year. 274 "acpi=force" can be used to override this mechanism. 275 276 Enter 0 to disable this mechanism and allow ACPI to 277 run by default no matter what the year. (default) 278 279config ACPI_DEBUG 280 bool "Debug Statements" 281 default n 282 help 283 The ACPI subsystem can produce debug output. Saying Y enables this 284 output and increases the kernel size by around 50K. 285 286 Use the acpi.debug_layer and acpi.debug_level kernel command-line 287 parameters documented in Documentation/acpi/debug.txt and 288 Documentation/kernel-parameters.txt to control the type and 289 amount of debug output. 290 291config ACPI_DEBUG_FUNC_TRACE 292 bool "Additionally enable ACPI function tracing" 293 default n 294 depends on ACPI_DEBUG 295 help 296 ACPI Debug Statements slow down ACPI processing. Function trace 297 is about half of the penalty and is rarely useful. 298 299config ACPI_PCI_SLOT 300 tristate "PCI slot detection driver" 301 depends on SYSFS 302 default n 303 help 304 This driver creates entries in /sys/bus/pci/slots/ for all PCI 305 slots in the system. This can help correlate PCI bus addresses, 306 i.e., segment/bus/device/function tuples, with physical slots in 307 the system. If you are unsure, say N. 308 309 To compile this driver as a module, choose M here: 310 the module will be called pci_slot. 311 312config X86_PM_TIMER 313 bool "Power Management Timer Support" if EMBEDDED 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 tristate "Container and Module Devices (EXPERIMENTAL)" 330 depends on EXPERIMENTAL 331 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 332 help 333 This driver supports ACPI Container and Module devices (IDs 334 ACPI0004, PNP0A05, and PNP0A06). 335 336 This helps support hotplug of nodes, CPUs, and memory. 337 338 To compile this driver as a module, choose M here: 339 the module will be called container. 340 341config ACPI_HOTPLUG_MEMORY 342 tristate "Memory Hotplug" 343 depends on MEMORY_HOTPLUG 344 default n 345 help 346 This driver supports ACPI memory hotplug. The driver 347 fields notifications on ACPI memory devices (PNP0C80), 348 which represent memory ranges that may be onlined or 349 offlined during runtime. 350 351 If your hardware and firmware do not support adding or 352 removing memory devices at runtime, you need not enable 353 this driver. 354 355 To compile this driver as a module, choose M here: 356 the module will be called acpi_memhotplug. 357 358config ACPI_SBS 359 tristate "Smart Battery System" 360 depends on X86 361 select POWER_SUPPLY 362 help 363 This driver supports the Smart Battery System, another 364 type of access to battery information, found on some laptops. 365 366 To compile this driver as a module, choose M here: 367 the modules will be called sbs and sbshc. 368 369config ACPI_HED 370 tristate "Hardware Error Device" 371 help 372 This driver supports the Hardware Error Device (PNP0C33), 373 which is used to report some hardware errors notified via 374 SCI, mainly the corrected errors. 375 376source "drivers/acpi/apei/Kconfig" 377 378endif # ACPI 379