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52 For backwards compatibility, this option allows 53 deprecated /proc/acpi/ files to exist, even when 54 they have been replaced by functions in /sys. 55 The deprecated files (and their replacements) include: 56 57 /proc/acpi/sleep (/sys/power/state) 58 /proc/acpi/info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 263 select BACKLIGHT_CLASS_DEVICE 264 ---help--- 265 This driver adds support for access to certain system settings 266 on "legacy free" Toshiba laptops. These laptops can be recognized by 267 their lack of a BIOS setup menu and APM support. 268 269 On these machines, all system configuration is handled through the 270 ACPI. This driver is required for access to controls not covered 271 by the general ACPI drivers, such as LCD brightness, video output, 272 etc. 273 274 This driver differs from the non-ACPI Toshiba laptop driver (located 275 under "Processor type and features") in several aspects. 276 Configuration is accessed by reading and writing text files in the 277 /proc tree instead of by program interface to /dev. Furthermore, no 278 power management functions are exposed, as those are handled by the 279 general ACPI drivers. 280 281 More information about this driver is available at 282 <http://memebeam.org/toys/ToshibaAcpiDriver>. 283 284 If you have a legacy free Toshiba laptop (such as the Libretto L1 285 series), say Y. 286 287config ACPI_CUSTOM_DSDT_FILE 288 string "Custom DSDT Table file to include" 289 default "" 290 depends on !STANDALONE 291 help 292 This option supports a custom DSDT by linking it into the kernel. 293 See Documentation/acpi/dsdt-override.txt 294 295 Enter the full path name to the file which includes the AmlCode 296 declaration. 297 298 If unsure, don't enter a file name. 299 300config ACPI_CUSTOM_DSDT 301 bool 302 default ACPI_CUSTOM_DSDT_FILE != "" 303 304config ACPI_BLACKLIST_YEAR 305 int "Disable ACPI for systems before Jan 1st this year" if X86_32 306 default 0 307 help 308 enter a 4-digit year, eg. 2001 to disable ACPI by default 309 on platforms with DMI BIOS date before January 1st that year. 310 "acpi=force" can be used to override this mechanism. 311 312 Enter 0 to disable this mechanism and allow ACPI to 313 run by default no matter what the year. (default) 314 315config ACPI_DEBUG 316 bool "Debug Statements" 317 default n 318 help 319 The ACPI driver can optionally report errors with a great deal 320 of verbosity. Saying Y enables these statements. This will increase 321 your kernel size by around 50K. 322 323config ACPI_DEBUG_FUNC_TRACE 324 bool "Additionally enable ACPI function tracing" 325 default n 326 depends on ACPI_DEBUG 327 help 328 ACPI Debug Statements slow down ACPI processing. Function trace 329 is about half of the penalty and is rarely useful. 330 331config ACPI_EC 332 bool 333 default y 334 help 335 This driver is required on some systems for the proper operation of 336 the battery and thermal drivers. If you are compiling for a 337 mobile system, say Y. 338 339config ACPI_PCI_SLOT 340 tristate "PCI slot detection driver" 341 default n 342 help 343 This driver will attempt to discover all PCI slots in your system, 344 and creates entries in /sys/bus/pci/slots/. This feature can 345 help you correlate PCI bus addresses with the physical geography 346 of your slots. If you are unsure, say N. 347 348config ACPI_POWER 349 bool 350 default y 351 352config ACPI_SYSTEM 353 bool 354 default y 355 help 356 This driver will enable your system to shut down using ACPI, and 357 dump your ACPI DSDT table using /proc/acpi/dsdt. 358 359config X86_PM_TIMER 360 bool "Power Management Timer Support" if EMBEDDED 361 depends on X86 362 default y 363 help 364 The Power Management Timer is available on all ACPI-capable, 365 in most cases even if ACPI is unusable or blacklisted. 366 367 This timing source is not affected by power management features 368 like aggressive processor idling, throttling, frequency and/or 369 voltage scaling, unlike the commonly used Time Stamp Counter 370 (TSC) timing source. 371 372 You should nearly always say Y here because many modern 373 systems require this timer. 374 375config ACPI_CONTAINER 376 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 377 depends on EXPERIMENTAL 378 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 379 ---help--- 380 This allows _physical_ insertion and removal of CPUs and memory. 381 This can be useful, for example, on NUMA machines that support 382 ACPI based physical hotplug of nodes, or non-NUMA machines that 383 support physical cpu/memory hot-plug. 384 385 If one selects "m", this driver can be loaded with 386 "modprobe acpi_container". 387 388config ACPI_HOTPLUG_MEMORY 389 tristate "Memory Hotplug" 390 depends on MEMORY_HOTPLUG 391 default n 392 help 393 This driver adds supports for ACPI Memory Hotplug. This driver 394 provides support for fielding notifications on ACPI memory 395 devices (PNP0C80) which represent memory ranges that may be 396 onlined or offlined during runtime. 397 398 Enabling this driver assumes that your platform hardware 399 and firmware have support for hot-plugging physical memory. If 400 your system does not support physically adding or ripping out 401 memory DIMMs at some platform defined granularity (individually 402 or as a bank) at runtime, then you need not enable this driver. 403 404 If one selects "m," this driver can be loaded using the following 405 command: 406 $>modprobe acpi_memhotplug 407 408config ACPI_SBS 409 tristate "Smart Battery System" 410 depends on X86 411 help 412 This driver adds support for the Smart Battery System, another 413 type of access to battery information, found on some laptops. 414 415endif # ACPI 416