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 select CPU_IDLE 13 default y 14 help 15 Advanced Configuration and Power Interface (ACPI) support for 16 Linux requires an ACPI-compliant platform (hardware/firmware), 17 and assumes the presence of OS-directed configuration and power 18 management (OSPM) software. This option will enlarge your 19 kernel by about 70K. 20 21 Linux ACPI provides a robust functional replacement for several 22 legacy configuration and power management interfaces, including 23 the Plug-and-Play BIOS specification (PnP BIOS), the 24 MultiProcessor Specification (MPS), and the Advanced Power 25 Management (APM) specification. If both ACPI and APM support 26 are configured, ACPI is used. 27 28 The project home page for the Linux ACPI subsystem is here: 29 <http://www.lesswatts.org/projects/acpi/> 30 31 Linux support for ACPI is based on Intel Corporation's ACPI 32 Component Architecture (ACPI CA). For more information on the 33 ACPI CA, see: 34 <http://acpica.org/> 35 36 ACPI is an open industry specification co-developed by 37 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. 38 The specification is available at: 39 <http://www.acpi.info> 40 41if ACPI 42 43config ACPI_SLEEP 44 bool 45 depends on SUSPEND || HIBERNATION 46 default y 47 48config ACPI_PROCFS 49 bool "Deprecated /proc/acpi files" 50 depends on PROC_FS 51 help 52 For backwards compatibility, this option allows 53 deprecated /proc/acpi/ files to exist, even when 54 they have been replaced by functions in /sys. 55 The deprecated files (and their replacements) include: 56 57 /proc/acpi/sleep (/sys/power/state) 58 /proc/acpi/info (/sys/module/acpi/parameters/acpica_version) 59 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT) 60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP) 61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer) 62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level) 63 /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*) 64 /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/ 65 cpufreq/*) 66 /proc/acpi/processor/*/throttling (/sys/class/thermal/ 67 cooling_device*/*) 68 This option has no effect on /proc/acpi/ files 69 and functions which do not yet exist in /sys. 70 71 Say N to delete /proc/acpi/ files that have moved to /sys/ 72 73config ACPI_PROCFS_POWER 74 bool "Deprecated power /proc/acpi directories" 75 depends on PROC_FS 76 default y 77 help 78 For backwards compatibility, this option allows 79 deprecated power /proc/acpi/ directories to exist, even when 80 they have been replaced by functions in /sys. 81 The deprecated directories (and their replacements) include: 82 /proc/acpi/battery/* (/sys/class/power_supply/*) 83 /proc/acpi/ac_adapter/* (sys/class/power_supply/*) 84 This option has no effect on /proc/acpi/ directories 85 and functions, which do not yet exist in /sys 86 87 Say N to delete power /proc/acpi/ directories that have moved to /sys/ 88 89config ACPI_POWER_METER 90 tristate "ACPI 4.0 power meter" 91 depends on HWMON 92 help 93 This driver exposes ACPI 4.0 power meters as hardware monitoring 94 devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware 95 and a power meter. 96 97 To compile this driver as a module, choose M here: 98 the module will be called power-meter. 99 100config ACPI_SYSFS_POWER 101 bool "Future power /sys interface" 102 select POWER_SUPPLY 103 default y 104 help 105 Say N to disable power /sys interface 106 107config ACPI_PROC_EVENT 108 bool "Deprecated /proc/acpi/event support" 109 depends on PROC_FS 110 default y 111 help 112 A user-space daemon, acpid, typically reads /proc/acpi/event 113 and handles all ACPI-generated events. 114 115 These events are now delivered to user-space either 116 via the input layer or as netlink events. 117 118 This build option enables the old code for legacy 119 user-space implementation. After some time, this will 120 be moved under CONFIG_ACPI_PROCFS, and then deleted. 121 122 Say Y here to retain the old behaviour. Say N if your 123 user-space is newer than kernel 2.6.23 (September 2007). 124 125config ACPI_AC 126 tristate "AC Adapter" 127 depends on X86 128 default y 129 help 130 This driver supports the AC Adapter object, which indicates 131 whether a system is on AC or not. If you have a system that can 132 switch between A/C and battery, say Y. 133 134 To compile this driver as a module, choose M here: 135 the module will be called ac. 136 137config ACPI_BATTERY 138 tristate "Battery" 139 depends on X86 140 default y 141 help 142 This driver adds support for battery information through 143 /proc/acpi/battery. If you have a mobile system with a battery, 144 say Y. 145 146 To compile this driver as a module, choose M here: 147 the module will be called battery. 148 149config ACPI_BUTTON 150 tristate "Button" 151 depends on INPUT 152 default y 153 help 154 This driver handles events on the power, sleep, and lid buttons. 155 A daemon reads /proc/acpi/event and perform user-defined actions 156 such as shutting down the system. This is necessary for 157 software-controlled poweroff. 158 159 To compile this driver as a module, choose M here: 160 the module will be called button. 161 162config ACPI_VIDEO 163 tristate "Video" 164 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 165 depends on INPUT 166 select THERMAL 167 help 168 This driver implements the ACPI Extensions For Display Adapters 169 for integrated graphics devices on motherboard, as specified in 170 ACPI 2.0 Specification, Appendix B. This supports basic operations 171 such as defining the video POST device, retrieving EDID information, 172 and setting up a video output. 173 174 To compile this driver as a module, choose M here: 175 the module will be called video. 176 177config ACPI_FAN 178 tristate "Fan" 179 select THERMAL 180 default y 181 help 182 This driver supports ACPI fan devices, allowing user-mode 183 applications to perform basic fan control (on, off, status). 184 185 To compile this driver as a module, choose M here: 186 the module will be called fan. 187 188config ACPI_DOCK 189 bool "Dock" 190 depends on EXPERIMENTAL 191 help 192 This driver supports ACPI-controlled docking stations and removable 193 drive bays such as the IBM Ultrabay and the Dell Module Bay. 194 195config ACPI_PROCESSOR 196 tristate "Processor" 197 select THERMAL 198 default y 199 help 200 This driver installs ACPI as the idle handler for Linux and uses 201 ACPI C2 and C3 processor states to save power on systems that 202 support it. It is required by several flavors of cpufreq 203 performance-state drivers. 204 205 To compile this driver as a module, choose M here: 206 the module will be called processor. 207 208config ACPI_HOTPLUG_CPU 209 bool 210 depends on ACPI_PROCESSOR && HOTPLUG_CPU 211 select ACPI_CONTAINER 212 default y 213 214config ACPI_PROCESSOR_AGGREGATOR 215 tristate "Processor Aggregator" 216 depends on ACPI_PROCESSOR 217 depends on EXPERIMENTAL 218 depends on X86 219 help 220 ACPI 4.0 defines processor Aggregator, which enables OS to perform 221 specific processor configuration and control that applies to all 222 processors in the platform. Currently only logical processor idling 223 is defined, which is to reduce power consumption. This driver 224 supports the new device. 225 226config ACPI_THERMAL 227 tristate "Thermal Zone" 228 depends on ACPI_PROCESSOR 229 select THERMAL 230 default y 231 help 232 This driver supports ACPI thermal zones. Most mobile and 233 some desktop systems support ACPI thermal zones. It is HIGHLY 234 recommended that this option be enabled, as your processor(s) 235 may be damaged without it. 236 237 To compile this driver as a module, choose M here: 238 the module will be called thermal. 239 240config ACPI_NUMA 241 bool "NUMA support" 242 depends on NUMA 243 depends on (X86 || IA64) 244 default y if IA64_GENERIC || IA64_SGI_SN2 245 246config ACPI_CUSTOM_DSDT_FILE 247 string "Custom DSDT Table file to include" 248 default "" 249 depends on !STANDALONE 250 help 251 This option supports a custom DSDT by linking it into the kernel. 252 See Documentation/acpi/dsdt-override.txt 253 254 Enter the full path name to the file which includes the AmlCode 255 declaration. 256 257 If unsure, don't enter a file name. 258 259config ACPI_CUSTOM_DSDT 260 bool 261 default ACPI_CUSTOM_DSDT_FILE != "" 262 263config ACPI_BLACKLIST_YEAR 264 int "Disable ACPI for systems before Jan 1st this year" if X86_32 265 default 0 266 help 267 Enter a 4-digit year, e.g., 2001, to disable ACPI by default 268 on platforms with DMI BIOS date before January 1st that year. 269 "acpi=force" can be used to override this mechanism. 270 271 Enter 0 to disable this mechanism and allow ACPI to 272 run by default no matter what the year. (default) 273 274config ACPI_DEBUG 275 bool "Debug Statements" 276 default n 277 help 278 The ACPI subsystem can produce debug output. Saying Y enables this 279 output and increases the kernel size by around 50K. 280 281 Use the acpi.debug_layer and acpi.debug_level kernel command-line 282 parameters documented in Documentation/acpi/debug.txt and 283 Documentation/kernel-parameters.txt to control the type and 284 amount of debug output. 285 286config ACPI_DEBUG_FUNC_TRACE 287 bool "Additionally enable ACPI function tracing" 288 default n 289 depends on ACPI_DEBUG 290 help 291 ACPI Debug Statements slow down ACPI processing. Function trace 292 is about half of the penalty and is rarely useful. 293 294config ACPI_PCI_SLOT 295 tristate "PCI slot detection driver" 296 depends on SYSFS 297 default n 298 help 299 This driver creates entries in /sys/bus/pci/slots/ for all PCI 300 slots in the system. This can help correlate PCI bus addresses, 301 i.e., segment/bus/device/function tuples, with physical slots in 302 the system. If you are unsure, say N. 303 304 To compile this driver as a module, choose M here: 305 the module will be called pci_slot. 306 307config X86_PM_TIMER 308 bool "Power Management Timer Support" if EMBEDDED 309 depends on X86 310 default y 311 help 312 The Power Management Timer is available on all ACPI-capable, 313 in most cases even if ACPI is unusable or blacklisted. 314 315 This timing source is not affected by power management features 316 like aggressive processor idling, throttling, frequency and/or 317 voltage scaling, unlike the commonly used Time Stamp Counter 318 (TSC) timing source. 319 320 You should nearly always say Y here because many modern 321 systems require this timer. 322 323config ACPI_CONTAINER 324 tristate "Container and Module Devices (EXPERIMENTAL)" 325 depends on EXPERIMENTAL 326 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 327 help 328 This driver supports ACPI Container and Module devices (IDs 329 ACPI0004, PNP0A05, and PNP0A06). 330 331 This helps support hotplug of nodes, CPUs, and memory. 332 333 To compile this driver as a module, choose M here: 334 the module will be called container. 335 336config ACPI_HOTPLUG_MEMORY 337 tristate "Memory Hotplug" 338 depends on MEMORY_HOTPLUG 339 default n 340 help 341 This driver supports ACPI memory hotplug. The driver 342 fields notifications on ACPI memory devices (PNP0C80), 343 which represent memory ranges that may be onlined or 344 offlined during runtime. 345 346 If your hardware and firmware do not support adding or 347 removing memory devices at runtime, you need not enable 348 this driver. 349 350 To compile this driver as a module, choose M here: 351 the module will be called acpi_memhotplug. 352 353config ACPI_SBS 354 tristate "Smart Battery System" 355 depends on X86 356 help 357 This driver supports the Smart Battery System, another 358 type of access to battery information, found on some laptops. 359 360 To compile this driver as a module, choose M here: 361 the modules will be called sbs and sbshc. 362 363config ACPI_HED 364 tristate "Hardware Error Device" 365 help 366 This driver supports the Hardware Error Device (PNP0C33), 367 which is used to report some hardware errors notified via 368 SCI, mainly the corrected errors. 369 370source "drivers/acpi/apei/Kconfig" 371 372endif # ACPI 373