1# 2# ACPI Configuration 3# 4 5menuconfig ACPI 6 bool "ACPI (Advanced Configuration and Power Interface) Support" 7 depends on !X86_NUMAQ 8 depends on !X86_VISWS 9 depends on !IA64_HP_SIM 10 depends on IA64 || X86 11 depends on PCI 12 depends on PM 13 select PNP 14 default y 15 ---help--- 16 Advanced Configuration and Power Interface (ACPI) support for 17 Linux requires an ACPI compliant platform (hardware/firmware), 18 and assumes the presence of OS-directed configuration and power 19 management (OSPM) software. This option will enlarge your 20 kernel by about 70K. 21 22 Linux ACPI provides a robust functional replacement for several 23 legacy configuration and power management interfaces, including 24 the Plug-and-Play BIOS specification (PnP BIOS), the 25 MultiProcessor Specification (MPS), and the Advanced Power 26 Management (APM) specification. If both ACPI and APM support 27 are configured, whichever is loaded first shall be used. 28 29 The ACPI SourceForge project contains the latest source code, 30 documentation, tools, mailing list subscription, and other 31 information. This project is available at: 32 <http://sourceforge.net/projects/acpi> 33 34 Linux support for ACPI is based on Intel Corporation's ACPI 35 Component Architecture (ACPI CA). For more information see: 36 <http://developer.intel.com/technology/iapc/acpi> 37 38 ACPI is an open industry specification co-developed by Compaq, 39 Intel, Microsoft, Phoenix, and Toshiba. The specification is 40 available at: 41 <http://www.acpi.info> 42 43if ACPI 44 45config ACPI_SLEEP 46 bool 47 depends on PM_SLEEP 48 default y 49 50config ACPI_PROCFS 51 bool "Deprecated /proc/acpi files" 52 depends on PROC_FS 53 ---help--- 54 For backwards compatibility, this option allows 55 deprecated /proc/acpi/ files to exist, even when 56 they have been replaced by functions in /sys. 57 The deprecated files (and their replacements) include: 58 59 /proc/acpi/sleep (/sys/power/state) 60 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version) 61 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT) 62 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP) 63 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer) 64 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level) 65 66 This option has no effect on /proc/acpi/ files 67 and functions which do not yet exist in /sys. 68 69 Say N to delete /proc/acpi/ files that have moved to /sys/ 70config ACPI_PROCFS_POWER 71 bool "Deprecated power /proc/acpi directories" 72 depends on PROC_FS 73 default y 74 ---help--- 75 For backwards compatibility, this option allows 76 deprecated power /proc/acpi/ directories to exist, even when 77 they have been replaced by functions in /sys. 78 The deprecated directories (and their replacements) include: 79 /proc/acpi/battery/* (/sys/class/power_supply/*) 80 /proc/acpi/ac_adapter/* (sys/class/power_supply/*) 81 This option has no effect on /proc/acpi/ directories 82 and functions, which do not yet exist in /sys 83 84 Say N to delete power /proc/acpi/ directories that have moved to /sys/ 85 86config ACPI_SYSFS_POWER 87 bool "Future power /sys interface" 88 select POWER_SUPPLY 89 default y 90 ---help--- 91 Say N to disable power /sys interface 92 93config ACPI_PROC_EVENT 94 bool "Deprecated /proc/acpi/event support" 95 depends on PROC_FS 96 default y 97 ---help--- 98 A user-space daemon, acpi, typically read /proc/acpi/event 99 and handled all ACPI sub-system generated events. 100 101 These events are now delivered to user-space via 102 either the input layer, or as netlink events. 103 104 This build option enables the old code for legacy 105 user-space implementation. After some time, this will 106 be moved under CONFIG_ACPI_PROCFS, and then deleted. 107 108 Say Y here to retain the old behaviour. Say N if your 109 user-space is newer than kernel 2.6.23 (September 2007). 110 111config ACPI_AC 112 tristate "AC Adapter" 113 depends on X86 114 default y 115 help 116 This driver adds support for the AC Adapter object, which indicates 117 whether a system is on AC, or not. If you have a system that can 118 switch between A/C and battery, say Y. 119 120config ACPI_BATTERY 121 tristate "Battery" 122 depends on X86 123 default y 124 help 125 This driver adds support for battery information through 126 /proc/acpi/battery. If you have a mobile system with a battery, 127 say Y. 128 129config ACPI_BUTTON 130 tristate "Button" 131 depends on INPUT 132 default y 133 help 134 This driver handles events on the power, sleep and lid buttons. 135 A daemon reads /proc/acpi/event and perform user-defined actions 136 such as shutting down the system. This is necessary for 137 software controlled poweroff. 138 139config ACPI_VIDEO 140 tristate "Video" 141 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 142 depends on INPUT 143 help 144 This driver implement the ACPI Extensions For Display Adapters 145 for integrated graphics devices on motherboard, as specified in 146 ACPI 2.0 Specification, Appendix B, allowing to perform some basic 147 control like defining the video POST device, retrieving EDID information 148 or to setup a video output, etc. 149 Note that this is an ref. implementation only. It may or may not work 150 for your integrated video device. 151 152config ACPI_FAN 153 tristate "Fan" 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 default y 176 help 177 This driver installs ACPI as the idle handler for Linux, and uses 178 ACPI C2 and C3 processor states to save power, on systems that 179 support it. It is required by several flavors of cpufreq 180 Performance-state drivers. 181 182config ACPI_HOTPLUG_CPU 183 bool 184 depends on ACPI_PROCESSOR && HOTPLUG_CPU 185 select ACPI_CONTAINER 186 default y 187 188config ACPI_THERMAL 189 tristate "Thermal Zone" 190 depends on ACPI_PROCESSOR 191 select THERMAL 192 default y 193 help 194 This driver adds support for ACPI thermal zones. Most mobile and 195 some desktop systems support ACPI thermal zones. It is HIGHLY 196 recommended that this option be enabled, as your processor(s) 197 may be damaged without it. 198 199config ACPI_NUMA 200 bool "NUMA support" 201 depends on NUMA 202 depends on (X86 || IA64) 203 default y if IA64_GENERIC || IA64_SGI_SN2 204 205config ACPI_WMI 206 tristate "WMI (EXPERIMENTAL)" 207 depends on X86 208 depends on EXPERIMENTAL 209 help 210 This driver adds support for the ACPI-WMI (Windows Management 211 Instrumentation) mapper device (PNP0C14) found on some systems. 212 213 ACPI-WMI is a proprietary extension to ACPI to expose parts of the 214 ACPI firmware to userspace - this is done through various vendor 215 defined methods and data blocks in a PNP0C14 device, which are then 216 made available for userspace to call. 217 218 The implementation of this in Linux currently only exposes this to 219 other kernel space drivers. 220 221 This driver is a required dependency to build the firmware specific 222 drivers needed on many machines, including Acer and HP laptops. 223 224 It is safe to enable this driver even if your DSDT doesn't define 225 any ACPI-WMI devices. 226 227config ACPI_ASUS 228 tristate "ASUS/Medion Laptop Extras" 229 depends on X86 230 select BACKLIGHT_CLASS_DEVICE 231 ---help--- 232 This driver provides support for extra features of ACPI-compatible 233 ASUS laptops. As some of Medion laptops are made by ASUS, it may also 234 support some Medion laptops (such as 9675 for example). It makes all 235 the extra buttons generate standard ACPI events that go through 236 /proc/acpi/events, and (on some models) adds support for changing the 237 display brightness and output, switching the LCD backlight on and off, 238 and most importantly, allows you to blink those fancy LEDs intended 239 for reporting mail and wireless status. 240 241 Note: display switching code is currently considered EXPERIMENTAL, 242 toying with these values may even lock your machine. 243 244 All settings are changed via /proc/acpi/asus directory entries. Owner 245 and group for these entries can be set with asus_uid and asus_gid 246 parameters. 247 248 More information and a userspace daemon for handling the extra buttons 249 at <http://sourceforge.net/projects/acpi4asus/>. 250 251 If you have an ACPI-compatible ASUS laptop, say Y or M here. This 252 driver is still under development, so if your laptop is unsupported or 253 something works not quite as expected, please use the mailing list 254 available on the above page (acpi4asus-user@lists.sourceforge.net). 255 256 NOTE: This driver is deprecated and will probably be removed soon, 257 use asus-laptop instead. 258 259config ACPI_TOSHIBA 260 tristate "Toshiba Laptop Extras" 261 depends on X86 262 select BACKLIGHT_CLASS_DEVICE 263 ---help--- 264 This driver adds support for access to certain system settings 265 on "legacy free" Toshiba laptops. These laptops can be recognized by 266 their lack of a BIOS setup menu and APM support. 267 268 On these machines, all system configuration is handled through the 269 ACPI. This driver is required for access to controls not covered 270 by the general ACPI drivers, such as LCD brightness, video output, 271 etc. 272 273 This driver differs from the non-ACPI Toshiba laptop driver (located 274 under "Processor type and features") in several aspects. 275 Configuration is accessed by reading and writing text files in the 276 /proc tree instead of by program interface to /dev. Furthermore, no 277 power management functions are exposed, as those are handled by the 278 general ACPI drivers. 279 280 More information about this driver is available at 281 <http://memebeam.org/toys/ToshibaAcpiDriver>. 282 283 If you have a legacy free Toshiba laptop (such as the Libretto L1 284 series), say Y. 285 286config ACPI_CUSTOM_DSDT 287 bool "Include Custom DSDT" 288 depends on !STANDALONE 289 default n 290 help 291 This option supports a custom DSDT by linking it into the kernel. 292 See Documentation/acpi/dsdt-override.txt 293 294 If unsure, say N. 295 296config ACPI_CUSTOM_DSDT_FILE 297 string "Custom DSDT Table file to include" 298 depends on ACPI_CUSTOM_DSDT 299 default "" 300 help 301 Enter the full path name to the file which includes the AmlCode 302 declaration. 303 304config ACPI_CUSTOM_DSDT_INITRD 305 bool "Read Custom DSDT from initramfs" 306 depends on BLK_DEV_INITRD 307 default n 308 help 309 This option supports a custom DSDT by optionally loading it from initrd. 310 See Documentation/acpi/dsdt-override.txt 311 312 If you are not using this feature now, but may use it later, 313 it is safe to say Y here. 314 315config ACPI_BLACKLIST_YEAR 316 int "Disable ACPI for systems before Jan 1st this year" if X86_32 317 default 0 318 help 319 enter a 4-digit year, eg. 2001 to disable ACPI by default 320 on platforms with DMI BIOS date before January 1st that year. 321 "acpi=force" can be used to override this mechanism. 322 323 Enter 0 to disable this mechanism and allow ACPI to 324 run by default no matter what the year. (default) 325 326config ACPI_DEBUG 327 bool "Debug Statements" 328 default n 329 help 330 The ACPI driver can optionally report errors with a great deal 331 of verbosity. Saying Y enables these statements. This will increase 332 your kernel size by around 50K. 333 334config ACPI_DEBUG_FUNC_TRACE 335 bool "Additionally enable ACPI function tracing" 336 default n 337 depends on ACPI_DEBUG 338 help 339 ACPI Debug Statements slow down ACPI processing. Function trace 340 is about half of the penalty and is rarely useful. 341 342config ACPI_EC 343 bool 344 default y 345 help 346 This driver is required on some systems for the proper operation of 347 the battery and thermal drivers. If you are compiling for a 348 mobile system, say Y. 349 350config ACPI_POWER 351 bool 352 default y 353 354config ACPI_SYSTEM 355 bool 356 default y 357 help 358 This driver will enable your system to shut down using ACPI, and 359 dump your ACPI DSDT table using /proc/acpi/dsdt. 360 361config X86_PM_TIMER 362 bool "Power Management Timer Support" if EMBEDDED 363 depends on X86 364 default y 365 help 366 The Power Management Timer is available on all ACPI-capable, 367 in most cases even if ACPI is unusable or blacklisted. 368 369 This timing source is not affected by power management features 370 like aggressive processor idling, throttling, frequency and/or 371 voltage scaling, unlike the commonly used Time Stamp Counter 372 (TSC) timing source. 373 374 You should nearly always say Y here because many modern 375 systems require this timer. 376 377config ACPI_CONTAINER 378 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 379 depends on EXPERIMENTAL 380 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 381 ---help--- 382 This allows _physical_ insertion and removal of CPUs and memory. 383 This can be useful, for example, on NUMA machines that support 384 ACPI based physical hotplug of nodes, or non-NUMA machines that 385 support physical cpu/memory hot-plug. 386 387 If one selects "m", this driver can be loaded with 388 "modprobe acpi_container". 389 390config ACPI_HOTPLUG_MEMORY 391 tristate "Memory Hotplug" 392 depends on MEMORY_HOTPLUG 393 default n 394 help 395 This driver adds supports for ACPI Memory Hotplug. This driver 396 provides support for fielding notifications on ACPI memory 397 devices (PNP0C80) which represent memory ranges that may be 398 onlined or offlined during runtime. 399 400 Enabling this driver assumes that your platform hardware 401 and firmware have support for hot-plugging physical memory. If 402 your system does not support physically adding or ripping out 403 memory DIMMs at some platform defined granularity (individually 404 or as a bank) at runtime, then you need not enable this driver. 405 406 If one selects "m," this driver can be loaded using the following 407 command: 408 $>modprobe acpi_memhotplug 409 410config ACPI_SBS 411 tristate "Smart Battery System" 412 depends on X86 413 help 414 This driver adds support for the Smart Battery System, another 415 type of access to battery information, found on some laptops. 416 417endif # ACPI 418