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54 For backwards compatibility, this option allows 55 deprecated /proc/acpi/ files to exist, even when 56 they have been replaced by functions in /sys. 57 The deprecated files (and their replacements) include: 58 59 /proc/acpi/sleep (/sys/power/state) 60 /proc/acpi/info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 select THERMAL 144 help 145 This driver implement the ACPI Extensions For Display Adapters 146 for integrated graphics devices on motherboard, as specified in 147 ACPI 2.0 Specification, Appendix B, allowing to perform some basic 148 control like defining the video POST device, retrieving EDID information 149 or to setup a video output, etc. 150 Note that this is an ref. implementation only. It may or may not work 151 for your integrated video device. 152 153config ACPI_FAN 154 tristate "Fan" 155 select THERMAL 156 default y 157 help 158 This driver adds support for ACPI fan devices, allowing user-mode 159 applications to perform basic fan control (on, off, status). 160 161config ACPI_DOCK 162 tristate "Dock" 163 depends on EXPERIMENTAL 164 help 165 This driver adds support for ACPI controlled docking stations 166 167config ACPI_BAY 168 tristate "Removable Drive Bay (EXPERIMENTAL)" 169 depends on EXPERIMENTAL 170 depends on ACPI_DOCK 171 help 172 This driver adds support for ACPI controlled removable drive 173 bays such as the IBM ultrabay or the Dell Module Bay. 174 175config ACPI_PROCESSOR 176 tristate "Processor" 177 select THERMAL 178 default y 179 help 180 This driver installs ACPI as the idle handler for Linux, and uses 181 ACPI C2 and C3 processor states to save power, on systems that 182 support it. It is required by several flavors of cpufreq 183 Performance-state drivers. 184 185config ACPI_HOTPLUG_CPU 186 bool 187 depends on ACPI_PROCESSOR && HOTPLUG_CPU 188 select ACPI_CONTAINER 189 default y 190 191config ACPI_THERMAL 192 tristate "Thermal Zone" 193 depends on ACPI_PROCESSOR 194 select THERMAL 195 default y 196 help 197 This driver adds support for ACPI thermal zones. Most mobile and 198 some desktop systems support ACPI thermal zones. It is HIGHLY 199 recommended that this option be enabled, as your processor(s) 200 may be damaged without it. 201 202config ACPI_NUMA 203 bool "NUMA support" 204 depends on NUMA 205 depends on (X86 || IA64) 206 default y if IA64_GENERIC || IA64_SGI_SN2 207 208config ACPI_WMI 209 tristate "WMI (EXPERIMENTAL)" 210 depends on X86 211 depends on EXPERIMENTAL 212 help 213 This driver adds support for the ACPI-WMI (Windows Management 214 Instrumentation) mapper device (PNP0C14) found on some systems. 215 216 ACPI-WMI is a proprietary extension to ACPI to expose parts of the 217 ACPI firmware to userspace - this is done through various vendor 218 defined methods and data blocks in a PNP0C14 device, which are then 219 made available for userspace to call. 220 221 The implementation of this in Linux currently only exposes this to 222 other kernel space drivers. 223 224 This driver is a required dependency to build the firmware specific 225 drivers needed on many machines, including Acer and HP laptops. 226 227 It is safe to enable this driver even if your DSDT doesn't define 228 any ACPI-WMI devices. 229 230config ACPI_ASUS 231 tristate "ASUS/Medion Laptop Extras" 232 depends on X86 233 select BACKLIGHT_CLASS_DEVICE 234 ---help--- 235 This driver provides support for extra features of ACPI-compatible 236 ASUS laptops. As some of Medion laptops are made by ASUS, it may also 237 support some Medion laptops (such as 9675 for example). It makes all 238 the extra buttons generate standard ACPI events that go through 239 /proc/acpi/events, and (on some models) adds support for changing the 240 display brightness and output, switching the LCD backlight on and off, 241 and most importantly, allows you to blink those fancy LEDs intended 242 for reporting mail and wireless status. 243 244 Note: display switching code is currently considered EXPERIMENTAL, 245 toying with these values may even lock your machine. 246 247 All settings are changed via /proc/acpi/asus directory entries. Owner 248 and group for these entries can be set with asus_uid and asus_gid 249 parameters. 250 251 More information and a userspace daemon for handling the extra buttons 252 at <http://sourceforge.net/projects/acpi4asus/>. 253 254 If you have an ACPI-compatible ASUS laptop, say Y or M here. This 255 driver is still under development, so if your laptop is unsupported or 256 something works not quite as expected, please use the mailing list 257 available on the above page (acpi4asus-user@lists.sourceforge.net). 258 259 NOTE: This driver is deprecated and will probably be removed soon, 260 use asus-laptop instead. 261 262config ACPI_TOSHIBA 263 tristate "Toshiba Laptop Extras" 264 depends on X86 265 select BACKLIGHT_CLASS_DEVICE 266 ---help--- 267 This driver adds support for access to certain system settings 268 on "legacy free" Toshiba laptops. These laptops can be recognized by 269 their lack of a BIOS setup menu and APM support. 270 271 On these machines, all system configuration is handled through the 272 ACPI. This driver is required for access to controls not covered 273 by the general ACPI drivers, such as LCD brightness, video output, 274 etc. 275 276 This driver differs from the non-ACPI Toshiba laptop driver (located 277 under "Processor type and features") in several aspects. 278 Configuration is accessed by reading and writing text files in the 279 /proc tree instead of by program interface to /dev. Furthermore, no 280 power management functions are exposed, as those are handled by the 281 general ACPI drivers. 282 283 More information about this driver is available at 284 <http://memebeam.org/toys/ToshibaAcpiDriver>. 285 286 If you have a legacy free Toshiba laptop (such as the Libretto L1 287 series), say Y. 288 289config ACPI_CUSTOM_DSDT_FILE 290 string "Custom DSDT Table file to include" 291 default "" 292 depends on !STANDALONE 293 help 294 This option supports a custom DSDT by linking it into the kernel. 295 See Documentation/acpi/dsdt-override.txt 296 297 Enter the full path name to the file which includes the AmlCode 298 declaration. 299 300 If unsure, don't enter a file name. 301 302config ACPI_CUSTOM_DSDT 303 bool 304 default ACPI_CUSTOM_DSDT_FILE != "" 305 306config ACPI_BLACKLIST_YEAR 307 int "Disable ACPI for systems before Jan 1st this year" if X86_32 308 default 0 309 help 310 enter a 4-digit year, eg. 2001 to disable ACPI by default 311 on platforms with DMI BIOS date before January 1st that year. 312 "acpi=force" can be used to override this mechanism. 313 314 Enter 0 to disable this mechanism and allow ACPI to 315 run by default no matter what the year. (default) 316 317config ACPI_DEBUG 318 bool "Debug Statements" 319 default n 320 help 321 The ACPI driver can optionally report errors with a great deal 322 of verbosity. Saying Y enables these statements. This will increase 323 your kernel size by around 50K. 324 325config ACPI_DEBUG_FUNC_TRACE 326 bool "Additionally enable ACPI function tracing" 327 default n 328 depends on ACPI_DEBUG 329 help 330 ACPI Debug Statements slow down ACPI processing. Function trace 331 is about half of the penalty and is rarely useful. 332 333config ACPI_EC 334 bool 335 default y 336 help 337 This driver is required on some systems for the proper operation of 338 the battery and thermal drivers. If you are compiling for a 339 mobile system, say Y. 340 341config ACPI_POWER 342 bool 343 default y 344 345config ACPI_SYSTEM 346 bool 347 default y 348 help 349 This driver will enable your system to shut down using ACPI, and 350 dump your ACPI DSDT table using /proc/acpi/dsdt. 351 352config X86_PM_TIMER 353 bool "Power Management Timer Support" if EMBEDDED 354 depends on X86 355 default y 356 help 357 The Power Management Timer is available on all ACPI-capable, 358 in most cases even if ACPI is unusable or blacklisted. 359 360 This timing source is not affected by power management features 361 like aggressive processor idling, throttling, frequency and/or 362 voltage scaling, unlike the commonly used Time Stamp Counter 363 (TSC) timing source. 364 365 You should nearly always say Y here because many modern 366 systems require this timer. 367 368config ACPI_CONTAINER 369 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 370 depends on EXPERIMENTAL 371 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 372 ---help--- 373 This allows _physical_ insertion and removal of CPUs and memory. 374 This can be useful, for example, on NUMA machines that support 375 ACPI based physical hotplug of nodes, or non-NUMA machines that 376 support physical cpu/memory hot-plug. 377 378 If one selects "m", this driver can be loaded with 379 "modprobe acpi_container". 380 381config ACPI_HOTPLUG_MEMORY 382 tristate "Memory Hotplug" 383 depends on MEMORY_HOTPLUG 384 default n 385 help 386 This driver adds supports for ACPI Memory Hotplug. This driver 387 provides support for fielding notifications on ACPI memory 388 devices (PNP0C80) which represent memory ranges that may be 389 onlined or offlined during runtime. 390 391 Enabling this driver assumes that your platform hardware 392 and firmware have support for hot-plugging physical memory. If 393 your system does not support physically adding or ripping out 394 memory DIMMs at some platform defined granularity (individually 395 or as a bank) at runtime, then you need not enable this driver. 396 397 If one selects "m," this driver can be loaded using the following 398 command: 399 $>modprobe acpi_memhotplug 400 401config ACPI_SBS 402 tristate "Smart Battery System" 403 depends on X86 404 help 405 This driver adds support for the Smart Battery System, another 406 type of access to battery information, found on some laptops. 407 408endif # ACPI 409