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, whichever is loaded first shall be used. 26 27 The ACPI SourceForge project contains the latest source code, 28 documentation, tools, mailing list subscription, and other 29 information. This project is available at: 30 <http://sourceforge.net/projects/acpi> 31 32 Linux support for ACPI is based on Intel Corporation's ACPI 33 Component Architecture (ACPI CA). For more information see: 34 <http://developer.intel.com/technology/iapc/acpi> 35 36 ACPI is an open industry specification co-developed by Compaq, 37 Intel, Microsoft, Phoenix, and Toshiba. The specification is 38 available at: 39 <http://www.acpi.info> 40 41if ACPI 42 43config ACPI_SLEEP 44 bool 45 depends on PM_SLEEP 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52 For backwards compatibility, this option allows 53 deprecated /proc/acpi/ files to exist, even when 54 they have been replaced by functions in /sys. 55 The deprecated files (and their replacements) include: 56 57 /proc/acpi/sleep (/sys/power/state) 58 /proc/acpi/info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/modules/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 64 This option has no effect on /proc/acpi/ files 65 and functions which do not yet exist in /sys. 66 67 Say N to delete /proc/acpi/ files that have moved to /sys/ 68config ACPI_PROCFS_POWER 69 bool "Deprecated power /proc/acpi directories" 70 depends on PROC_FS 71 default y 72 ---help--- 73 For backwards compatibility, this option allows 74 deprecated power /proc/acpi/ directories to exist, even when 75 they have been replaced by functions in /sys. 76 The deprecated directories (and their replacements) include: 77 /proc/acpi/battery/* (/sys/class/power_supply/*) 78 /proc/acpi/ac_adapter/* (sys/class/power_supply/*) 79 This option has no effect on /proc/acpi/ directories 80 and functions, which do not yet exist in /sys 81 82 Say N to delete power /proc/acpi/ directories that have moved to /sys/ 83 84config ACPI_SYSFS_POWER 85 bool "Future power /sys interface" 86 select POWER_SUPPLY 87 default y 88 ---help--- 89 Say N to disable power /sys interface 90 91config ACPI_PROC_EVENT 92 bool "Deprecated /proc/acpi/event support" 93 depends on PROC_FS 94 default y 95 ---help--- 96 A user-space daemon, acpi, typically read /proc/acpi/event 97 and handled all ACPI sub-system generated events. 98 99 These events are now delivered to user-space via 100 either the input layer, or as netlink events. 101 102 This build option enables the old code for legacy 103 user-space implementation. After some time, this will 104 be moved under CONFIG_ACPI_PROCFS, and then deleted. 105 106 Say Y here to retain the old behaviour. Say N if your 107 user-space is newer than kernel 2.6.23 (September 2007). 108 109config ACPI_AC 110 tristate "AC Adapter" 111 depends on X86 112 default y 113 help 114 This driver adds support for the AC Adapter object, which indicates 115 whether a system is on AC, or not. If you have a system that can 116 switch between A/C and battery, say Y. 117 118config ACPI_BATTERY 119 tristate "Battery" 120 depends on X86 121 default y 122 help 123 This driver adds support for battery information through 124 /proc/acpi/battery. If you have a mobile system with a battery, 125 say Y. 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 /proc/acpi/event and perform user-defined actions 134 such as shutting down the system. This is necessary for 135 software controlled poweroff. 136 137config ACPI_VIDEO 138 tristate "Video" 139 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 140 depends on INPUT 141 select THERMAL 142 help 143 This driver implement the ACPI Extensions For Display Adapters 144 for integrated graphics devices on motherboard, as specified in 145 ACPI 2.0 Specification, Appendix B, allowing to perform some basic 146 control like defining the video POST device, retrieving EDID information 147 or to setup a video output, etc. 148 Note that this is an ref. implementation only. It may or may not work 149 for your integrated video device. 150 151config ACPI_FAN 152 tristate "Fan" 153 select THERMAL 154 default y 155 help 156 This driver adds support for ACPI fan devices, allowing user-mode 157 applications to perform basic fan control (on, off, status). 158 159config ACPI_DOCK 160 tristate "Dock" 161 depends on EXPERIMENTAL 162 help 163 This driver adds support for ACPI controlled docking stations 164 165config ACPI_BAY 166 tristate "Removable Drive Bay (EXPERIMENTAL)" 167 depends on EXPERIMENTAL 168 depends on ACPI_DOCK 169 help 170 This driver adds support for ACPI controlled removable drive 171 bays such as the IBM ultrabay or the Dell Module Bay. 172 173config ACPI_PROCESSOR 174 tristate "Processor" 175 select THERMAL 176 default y 177 help 178 This driver installs ACPI as the idle handler for Linux, and uses 179 ACPI C2 and C3 processor states to save power, on systems that 180 support it. It is required by several flavors of cpufreq 181 Performance-state drivers. 182 183config ACPI_HOTPLUG_CPU 184 bool 185 depends on ACPI_PROCESSOR && HOTPLUG_CPU 186 select ACPI_CONTAINER 187 default y 188 189config ACPI_THERMAL 190 tristate "Thermal Zone" 191 depends on ACPI_PROCESSOR 192 select THERMAL 193 default y 194 help 195 This driver adds support for ACPI thermal zones. Most mobile and 196 some desktop systems support ACPI thermal zones. It is HIGHLY 197 recommended that this option be enabled, as your processor(s) 198 may be damaged without it. 199 200config ACPI_NUMA 201 bool "NUMA support" 202 depends on NUMA 203 depends on (X86 || IA64) 204 default y if IA64_GENERIC || IA64_SGI_SN2 205 206config ACPI_WMI 207 tristate "WMI (EXPERIMENTAL)" 208 depends on X86 209 depends on EXPERIMENTAL 210 help 211 This driver adds support for the ACPI-WMI (Windows Management 212 Instrumentation) mapper device (PNP0C14) found on some systems. 213 214 ACPI-WMI is a proprietary extension to ACPI to expose parts of the 215 ACPI firmware to userspace - this is done through various vendor 216 defined methods and data blocks in a PNP0C14 device, which are then 217 made available for userspace to call. 218 219 The implementation of this in Linux currently only exposes this to 220 other kernel space drivers. 221 222 This driver is a required dependency to build the firmware specific 223 drivers needed on many machines, including Acer and HP laptops. 224 225 It is safe to enable this driver even if your DSDT doesn't define 226 any ACPI-WMI devices. 227 228config ACPI_ASUS 229 tristate "ASUS/Medion Laptop Extras" 230 depends on X86 231 select BACKLIGHT_CLASS_DEVICE 232 ---help--- 233 This driver provides support for extra features of ACPI-compatible 234 ASUS laptops. As some of Medion laptops are made by ASUS, it may also 235 support some Medion laptops (such as 9675 for example). It makes all 236 the extra buttons generate standard ACPI events that go through 237 /proc/acpi/events, and (on some models) adds support for changing the 238 display brightness and output, switching the LCD backlight on and off, 239 and most importantly, allows you to blink those fancy LEDs intended 240 for reporting mail and wireless status. 241 242 Note: display switching code is currently considered EXPERIMENTAL, 243 toying with these values may even lock your machine. 244 245 All settings are changed via /proc/acpi/asus directory entries. Owner 246 and group for these entries can be set with asus_uid and asus_gid 247 parameters. 248 249 More information and a userspace daemon for handling the extra buttons 250 at <http://sourceforge.net/projects/acpi4asus/>. 251 252 If you have an ACPI-compatible ASUS laptop, say Y or M here. This 253 driver is still under development, so if your laptop is unsupported or 254 something works not quite as expected, please use the mailing list 255 available on the above page (acpi4asus-user@lists.sourceforge.net). 256 257 NOTE: This driver is deprecated and will probably be removed soon, 258 use asus-laptop instead. 259 260config ACPI_TOSHIBA 261 tristate "Toshiba Laptop Extras" 262 depends on X86 && INPUT 263 select INPUT_POLLDEV 264 select NET 265 select RFKILL 266 select BACKLIGHT_CLASS_DEVICE 267 ---help--- 268 This driver adds support for access to certain system settings 269 on "legacy free" Toshiba laptops. These laptops can be recognized by 270 their lack of a BIOS setup menu and APM support. 271 272 On these machines, all system configuration is handled through the 273 ACPI. This driver is required for access to controls not covered 274 by the general ACPI drivers, such as LCD brightness, video output, 275 etc. 276 277 This driver differs from the non-ACPI Toshiba laptop driver (located 278 under "Processor type and features") in several aspects. 279 Configuration is accessed by reading and writing text files in the 280 /proc tree instead of by program interface to /dev. Furthermore, no 281 power management functions are exposed, as those are handled by the 282 general ACPI drivers. 283 284 More information about this driver is available at 285 <http://memebeam.org/toys/ToshibaAcpiDriver>. 286 287 If you have a legacy free Toshiba laptop (such as the Libretto L1 288 series), say Y. 289 290config ACPI_CUSTOM_DSDT_FILE 291 string "Custom DSDT Table file to include" 292 default "" 293 depends on !STANDALONE 294 help 295 This option supports a custom DSDT by linking it into the kernel. 296 See Documentation/acpi/dsdt-override.txt 297 298 Enter the full path name to the file which includes the AmlCode 299 declaration. 300 301 If unsure, don't enter a file name. 302 303config ACPI_CUSTOM_DSDT 304 bool 305 default ACPI_CUSTOM_DSDT_FILE != "" 306 307config ACPI_BLACKLIST_YEAR 308 int "Disable ACPI for systems before Jan 1st this year" if X86_32 309 default 0 310 help 311 enter a 4-digit year, eg. 2001 to disable ACPI by default 312 on platforms with DMI BIOS date before January 1st that year. 313 "acpi=force" can be used to override this mechanism. 314 315 Enter 0 to disable this mechanism and allow ACPI to 316 run by default no matter what the year. (default) 317 318config ACPI_DEBUG 319 bool "Debug Statements" 320 default n 321 help 322 The ACPI driver can optionally report errors with a great deal 323 of verbosity. Saying Y enables these statements. This will increase 324 your kernel size by around 50K. 325 326config ACPI_DEBUG_FUNC_TRACE 327 bool "Additionally enable ACPI function tracing" 328 default n 329 depends on ACPI_DEBUG 330 help 331 ACPI Debug Statements slow down ACPI processing. Function trace 332 is about half of the penalty and is rarely useful. 333 334config ACPI_EC 335 bool 336 default y 337 help 338 This driver is required on some systems for the proper operation of 339 the battery and thermal drivers. If you are compiling for a 340 mobile system, say Y. 341 342config ACPI_PCI_SLOT 343 tristate "PCI slot detection driver" 344 default n 345 help 346 This driver will attempt to discover all PCI slots in your system, 347 and creates entries in /sys/bus/pci/slots/. This feature can 348 help you correlate PCI bus addresses with the physical geography 349 of your slots. If you are unsure, say N. 350 351config ACPI_POWER 352 bool 353 default y 354 355config ACPI_SYSTEM 356 bool 357 default y 358 help 359 This driver will enable your system to shut down using ACPI, and 360 dump your ACPI DSDT table using /proc/acpi/dsdt. 361 362config X86_PM_TIMER 363 bool "Power Management Timer Support" if EMBEDDED 364 depends on X86 365 default y 366 help 367 The Power Management Timer is available on all ACPI-capable, 368 in most cases even if ACPI is unusable or blacklisted. 369 370 This timing source is not affected by power management features 371 like aggressive processor idling, throttling, frequency and/or 372 voltage scaling, unlike the commonly used Time Stamp Counter 373 (TSC) timing source. 374 375 You should nearly always say Y here because many modern 376 systems require this timer. 377 378config ACPI_CONTAINER 379 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 380 depends on EXPERIMENTAL 381 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 382 ---help--- 383 This allows _physical_ insertion and removal of CPUs and memory. 384 This can be useful, for example, on NUMA machines that support 385 ACPI based physical hotplug of nodes, or non-NUMA machines that 386 support physical cpu/memory hot-plug. 387 388 If one selects "m", this driver can be loaded with 389 "modprobe acpi_container". 390 391config ACPI_HOTPLUG_MEMORY 392 tristate "Memory Hotplug" 393 depends on MEMORY_HOTPLUG 394 default n 395 help 396 This driver adds supports for ACPI Memory Hotplug. This driver 397 provides support for fielding notifications on ACPI memory 398 devices (PNP0C80) which represent memory ranges that may be 399 onlined or offlined during runtime. 400 401 Enabling this driver assumes that your platform hardware 402 and firmware have support for hot-plugging physical memory. If 403 your system does not support physically adding or ripping out 404 memory DIMMs at some platform defined granularity (individually 405 or as a bank) at runtime, then you need not enable this driver. 406 407 If one selects "m," this driver can be loaded using the following 408 command: 409 $>modprobe acpi_memhotplug 410 411config ACPI_SBS 412 tristate "Smart Battery System" 413 depends on X86 414 help 415 This driver adds support for the Smart Battery System, another 416 type of access to battery information, found on some laptops. 417 418endif # ACPI 419