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51 For backwards compatibility, this option allows 52 deprecated /proc/acpi/ files to exist, even when 53 they have been replaced by functions in /sys. 54 55 This option has no effect on /proc/acpi/ files 56 and functions which do not yet exist in /sys. 57 58 Say N to delete /proc/acpi/ files that have moved to /sys/ 59 60config ACPI_PROCFS_POWER 61 bool "Deprecated power /proc/acpi directories" 62 depends on PROC_FS 63 help 64 For backwards compatibility, this option allows 65 deprecated power /proc/acpi/ directories to exist, even when 66 they have been replaced by functions in /sys. 67 The deprecated directories (and their replacements) include: 68 /proc/acpi/battery/* (/sys/class/power_supply/*) 69 /proc/acpi/ac_adapter/* (sys/class/power_supply/*) 70 This option has no effect on /proc/acpi/ directories 71 and functions, which do not yet exist in /sys 72 This option, together with the proc directories, will be 73 deleted in 2.6.39. 74 75 Say N to delete power /proc/acpi/ directories that have moved to /sys/ 76 77config ACPI_POWER_METER 78 tristate "ACPI 4.0 power meter" 79 depends on HWMON 80 help 81 This driver exposes ACPI 4.0 power meters as hardware monitoring 82 devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware 83 and a power meter. 84 85 To compile this driver as a module, choose M here: 86 the module will be called power-meter. 87 88config ACPI_EC_DEBUGFS 89 tristate "EC read/write access through /sys/kernel/debug/ec" 90 default n 91 help 92 Say N to disable Embedded Controller /sys/kernel/debug interface 93 94 Be aware that using this interface can confuse your Embedded 95 Controller in a way that a normal reboot is not enough. You then 96 have to power off your system, and remove the laptop battery for 97 some seconds. 98 An Embedded Controller typically is available on laptops and reads 99 sensor values like battery state and temperature. 100 The kernel accesses the EC through ACPI parsed code provided by BIOS 101 tables. This option allows to access the EC directly without ACPI 102 code being involved. 103 Thus this option is a debug option that helps to write ACPI drivers 104 and can be used to identify ACPI code or EC firmware bugs. 105 106config ACPI_PROC_EVENT 107 bool "Deprecated /proc/acpi/event support" 108 depends on PROC_FS 109 default y 110 help 111 A user-space daemon, acpid, typically reads /proc/acpi/event 112 and handles all ACPI-generated events. 113 114 These events are now delivered to user-space either 115 via the input layer or as netlink events. 116 117 This build option enables the old code for legacy 118 user-space implementation. After some time, this will 119 be moved under CONFIG_ACPI_PROCFS, and then deleted. 120 121 Say Y here to retain the old behaviour. Say N if your 122 user-space is newer than kernel 2.6.23 (September 2007). 123 124config ACPI_AC 125 tristate "AC Adapter" 126 depends on X86 127 select POWER_SUPPLY 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 select POWER_SUPPLY 141 default y 142 help 143 This driver adds support for battery information through 144 /proc/acpi/battery. If you have a mobile system with a battery, 145 say Y. 146 147 To compile this driver as a module, choose M here: 148 the module will be called battery. 149 150config ACPI_BUTTON 151 tristate "Button" 152 depends on INPUT 153 default y 154 help 155 This driver handles events on the power, sleep, and lid buttons. 156 A daemon reads /proc/acpi/event and perform user-defined actions 157 such as shutting down the system. This is necessary for 158 software-controlled poweroff. 159 160 To compile this driver as a module, choose M here: 161 the module will be called button. 162 163config ACPI_VIDEO 164 tristate "Video" 165 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 166 depends on INPUT 167 select THERMAL 168 help 169 This driver implements the ACPI Extensions For Display Adapters 170 for integrated graphics devices on motherboard, as specified in 171 ACPI 2.0 Specification, Appendix B. This supports basic operations 172 such as defining the video POST device, retrieving EDID information, 173 and setting up a video output. 174 175 To compile this driver as a module, choose M here: 176 the module will be called video. 177 178config ACPI_FAN 179 tristate "Fan" 180 select THERMAL 181 default y 182 help 183 This driver supports ACPI fan devices, allowing user-mode 184 applications to perform basic fan control (on, off, status). 185 186 To compile this driver as a module, choose M here: 187 the module will be called fan. 188 189config ACPI_DOCK 190 bool "Dock" 191 depends on EXPERIMENTAL 192 help 193 This driver supports ACPI-controlled docking stations and removable 194 drive bays such as the IBM Ultrabay and the Dell Module Bay. 195 196config ACPI_PROCESSOR 197 tristate "Processor" 198 select THERMAL 199 select CPU_IDLE 200 default y 201 help 202 This driver installs ACPI as the idle handler for Linux and uses 203 ACPI C2 and C3 processor states to save power on systems that 204 support it. It is required by several flavors of cpufreq 205 performance-state drivers. 206 207 To compile this driver as a module, choose M here: 208 the module will be called processor. 209config ACPI_IPMI 210 tristate "IPMI" 211 depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER 212 default n 213 help 214 This driver enables the ACPI to access the BMC controller. And it 215 uses the IPMI request/response message to communicate with BMC 216 controller, which can be found on on the server. 217 218 To compile this driver as a module, choose M here: 219 the module will be called as acpi_ipmi. 220 221config ACPI_HOTPLUG_CPU 222 bool 223 depends on ACPI_PROCESSOR && HOTPLUG_CPU 224 select ACPI_CONTAINER 225 default y 226 227config ACPI_PROCESSOR_AGGREGATOR 228 tristate "Processor Aggregator" 229 depends on ACPI_PROCESSOR 230 depends on EXPERIMENTAL 231 depends on X86 232 help 233 ACPI 4.0 defines processor Aggregator, which enables OS to perform 234 specific processor configuration and control that applies to all 235 processors in the platform. Currently only logical processor idling 236 is defined, which is to reduce power consumption. This driver 237 supports the new device. 238 239config ACPI_THERMAL 240 tristate "Thermal Zone" 241 depends on ACPI_PROCESSOR 242 select THERMAL 243 default y 244 help 245 This driver supports ACPI thermal zones. Most mobile and 246 some desktop systems support ACPI thermal zones. It is HIGHLY 247 recommended that this option be enabled, as your processor(s) 248 may be damaged without it. 249 250 To compile this driver as a module, choose M here: 251 the module will be called thermal. 252 253config ACPI_NUMA 254 bool "NUMA support" 255 depends on NUMA 256 depends on (X86 || IA64) 257 default y if IA64_GENERIC || IA64_SGI_SN2 258 259config ACPI_CUSTOM_DSDT_FILE 260 string "Custom DSDT Table file to include" 261 default "" 262 depends on !STANDALONE 263 help 264 This option supports a custom DSDT by linking it into the kernel. 265 See Documentation/acpi/dsdt-override.txt 266 267 Enter the full path name to the file which includes the AmlCode 268 declaration. 269 270 If unsure, don't enter a file name. 271 272config ACPI_CUSTOM_DSDT 273 bool 274 default ACPI_CUSTOM_DSDT_FILE != "" 275 276config ACPI_BLACKLIST_YEAR 277 int "Disable ACPI for systems before Jan 1st this year" if X86_32 278 default 0 279 help 280 Enter a 4-digit year, e.g., 2001, to disable ACPI by default 281 on platforms with DMI BIOS date before January 1st that year. 282 "acpi=force" can be used to override this mechanism. 283 284 Enter 0 to disable this mechanism and allow ACPI to 285 run by default no matter what the year. (default) 286 287config ACPI_DEBUG 288 bool "Debug Statements" 289 default n 290 help 291 The ACPI subsystem can produce debug output. Saying Y enables this 292 output and increases the kernel size by around 50K. 293 294 Use the acpi.debug_layer and acpi.debug_level kernel command-line 295 parameters documented in Documentation/acpi/debug.txt and 296 Documentation/kernel-parameters.txt to control the type and 297 amount of debug output. 298 299config ACPI_DEBUG_FUNC_TRACE 300 bool "Additionally enable ACPI function tracing" 301 default n 302 depends on ACPI_DEBUG 303 help 304 ACPI Debug Statements slow down ACPI processing. Function trace 305 is about half of the penalty and is rarely useful. 306 307config ACPI_PCI_SLOT 308 tristate "PCI slot detection driver" 309 depends on SYSFS 310 default n 311 help 312 This driver creates entries in /sys/bus/pci/slots/ for all PCI 313 slots in the system. This can help correlate PCI bus addresses, 314 i.e., segment/bus/device/function tuples, with physical slots in 315 the system. If you are unsure, say N. 316 317 To compile this driver as a module, choose M here: 318 the module will be called pci_slot. 319 320config X86_PM_TIMER 321 bool "Power Management Timer Support" if EXPERT 322 depends on X86 323 default y 324 help 325 The Power Management Timer is available on all ACPI-capable, 326 in most cases even if ACPI is unusable or blacklisted. 327 328 This timing source is not affected by power management features 329 like aggressive processor idling, throttling, frequency and/or 330 voltage scaling, unlike the commonly used Time Stamp Counter 331 (TSC) timing source. 332 333 You should nearly always say Y here because many modern 334 systems require this timer. 335 336config ACPI_CONTAINER 337 tristate "Container and Module Devices (EXPERIMENTAL)" 338 depends on EXPERIMENTAL 339 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 340 help 341 This driver supports ACPI Container and Module devices (IDs 342 ACPI0004, PNP0A05, and PNP0A06). 343 344 This helps support hotplug of nodes, CPUs, and memory. 345 346 To compile this driver as a module, choose M here: 347 the module will be called container. 348 349config ACPI_HOTPLUG_MEMORY 350 tristate "Memory Hotplug" 351 depends on MEMORY_HOTPLUG 352 default n 353 help 354 This driver supports ACPI memory hotplug. The driver 355 fields notifications on ACPI memory devices (PNP0C80), 356 which represent memory ranges that may be onlined or 357 offlined during runtime. 358 359 If your hardware and firmware do not support adding or 360 removing memory devices at runtime, you need not enable 361 this driver. 362 363 To compile this driver as a module, choose M here: 364 the module will be called acpi_memhotplug. 365 366config ACPI_SBS 367 tristate "Smart Battery System" 368 depends on X86 369 select POWER_SUPPLY 370 help 371 This driver supports the Smart Battery System, another 372 type of access to battery information, found on some laptops. 373 374 To compile this driver as a module, choose M here: 375 the modules will be called sbs and sbshc. 376 377config ACPI_HED 378 tristate "Hardware Error Device" 379 help 380 This driver supports the Hardware Error Device (PNP0C33), 381 which is used to report some hardware errors notified via 382 SCI, mainly the corrected errors. 383 384source "drivers/acpi/apei/Kconfig" 385 386endif # ACPI 387