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 SUSPEND || HIBERNATION 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52 For backwards compatibility, this option allows 53 deprecated /proc/acpi/ files to exist, even when 54 they have been replaced by functions in /sys. 55 The deprecated files (and their replacements) include: 56 57 /proc/acpi/sleep (/sys/power/state) 58 /proc/acpi/info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 bool "Dock" 161 depends on EXPERIMENTAL 162 help 163 This driver adds support for ACPI controlled docking stations and removable 164 drive bays such as the IBM ultrabay or the Dell Module Bay. 165 166config ACPI_PROCESSOR 167 tristate "Processor" 168 select THERMAL 169 default y 170 help 171 This driver installs ACPI as the idle handler for Linux, and uses 172 ACPI C2 and C3 processor states to save power, on systems that 173 support it. It is required by several flavors of cpufreq 174 Performance-state drivers. 175 176config ACPI_HOTPLUG_CPU 177 bool 178 depends on ACPI_PROCESSOR && HOTPLUG_CPU 179 select ACPI_CONTAINER 180 default y 181 182config ACPI_THERMAL 183 tristate "Thermal Zone" 184 depends on ACPI_PROCESSOR 185 select THERMAL 186 default y 187 help 188 This driver adds support for ACPI thermal zones. Most mobile and 189 some desktop systems support ACPI thermal zones. It is HIGHLY 190 recommended that this option be enabled, as your processor(s) 191 may be damaged without it. 192 193config ACPI_NUMA 194 bool "NUMA support" 195 depends on NUMA 196 depends on (X86 || IA64) 197 default y if IA64_GENERIC || IA64_SGI_SN2 198 199config ACPI_WMI 200 tristate "WMI (EXPERIMENTAL)" 201 depends on X86 202 depends on EXPERIMENTAL 203 help 204 This driver adds support for the ACPI-WMI (Windows Management 205 Instrumentation) mapper device (PNP0C14) found on some systems. 206 207 ACPI-WMI is a proprietary extension to ACPI to expose parts of the 208 ACPI firmware to userspace - this is done through various vendor 209 defined methods and data blocks in a PNP0C14 device, which are then 210 made available for userspace to call. 211 212 The implementation of this in Linux currently only exposes this to 213 other kernel space drivers. 214 215 This driver is a required dependency to build the firmware specific 216 drivers needed on many machines, including Acer and HP laptops. 217 218 It is safe to enable this driver even if your DSDT doesn't define 219 any ACPI-WMI devices. 220 221config ACPI_ASUS 222 tristate "ASUS/Medion Laptop Extras" 223 depends on X86 224 select BACKLIGHT_CLASS_DEVICE 225 ---help--- 226 This driver provides support for extra features of ACPI-compatible 227 ASUS laptops. As some of Medion laptops are made by ASUS, it may also 228 support some Medion laptops (such as 9675 for example). It makes all 229 the extra buttons generate standard ACPI events that go through 230 /proc/acpi/events, and (on some models) adds support for changing the 231 display brightness and output, switching the LCD backlight on and off, 232 and most importantly, allows you to blink those fancy LEDs intended 233 for reporting mail and wireless status. 234 235 Note: display switching code is currently considered EXPERIMENTAL, 236 toying with these values may even lock your machine. 237 238 All settings are changed via /proc/acpi/asus directory entries. Owner 239 and group for these entries can be set with asus_uid and asus_gid 240 parameters. 241 242 More information and a userspace daemon for handling the extra buttons 243 at <http://sourceforge.net/projects/acpi4asus/>. 244 245 If you have an ACPI-compatible ASUS laptop, say Y or M here. This 246 driver is still under development, so if your laptop is unsupported or 247 something works not quite as expected, please use the mailing list 248 available on the above page (acpi4asus-user@lists.sourceforge.net). 249 250 NOTE: This driver is deprecated and will probably be removed soon, 251 use asus-laptop instead. 252 253config ACPI_TOSHIBA 254 tristate "Toshiba Laptop Extras" 255 depends on X86 && INPUT 256 select INPUT_POLLDEV 257 select NET 258 select RFKILL 259 select BACKLIGHT_CLASS_DEVICE 260 ---help--- 261 This driver adds support for access to certain system settings 262 on "legacy free" Toshiba laptops. These laptops can be recognized by 263 their lack of a BIOS setup menu and APM support. 264 265 On these machines, all system configuration is handled through the 266 ACPI. This driver is required for access to controls not covered 267 by the general ACPI drivers, such as LCD brightness, video output, 268 etc. 269 270 This driver differs from the non-ACPI Toshiba laptop driver (located 271 under "Processor type and features") in several aspects. 272 Configuration is accessed by reading and writing text files in the 273 /proc tree instead of by program interface to /dev. Furthermore, no 274 power management functions are exposed, as those are handled by the 275 general ACPI drivers. 276 277 More information about this driver is available at 278 <http://memebeam.org/toys/ToshibaAcpiDriver>. 279 280 If you have a legacy free Toshiba laptop (such as the Libretto L1 281 series), say Y. 282 283config ACPI_CUSTOM_DSDT_FILE 284 string "Custom DSDT Table file to include" 285 default "" 286 depends on !STANDALONE 287 help 288 This option supports a custom DSDT by linking it into the kernel. 289 See Documentation/acpi/dsdt-override.txt 290 291 Enter the full path name to the file which includes the AmlCode 292 declaration. 293 294 If unsure, don't enter a file name. 295 296config ACPI_CUSTOM_DSDT 297 bool 298 default ACPI_CUSTOM_DSDT_FILE != "" 299 300config ACPI_BLACKLIST_YEAR 301 int "Disable ACPI for systems before Jan 1st this year" if X86_32 302 default 0 303 help 304 enter a 4-digit year, eg. 2001 to disable ACPI by default 305 on platforms with DMI BIOS date before January 1st that year. 306 "acpi=force" can be used to override this mechanism. 307 308 Enter 0 to disable this mechanism and allow ACPI to 309 run by default no matter what the year. (default) 310 311config ACPI_DEBUG 312 bool "Debug Statements" 313 default n 314 help 315 The ACPI subsystem can produce debug output. Saying Y enables this 316 output and increases the kernel size by around 50K. 317 318 Use the acpi.debug_layer and acpi.debug_level kernel command-line 319 parameters documented in Documentation/acpi/debug.txt and 320 Documentation/kernel-parameters.txt to control the type and 321 amount of debug output. 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_PCI_SLOT 332 tristate "PCI slot detection driver" 333 default n 334 help 335 This driver will attempt to discover all PCI slots in your system, 336 and creates entries in /sys/bus/pci/slots/. This feature can 337 help you correlate PCI bus addresses with the physical geography 338 of your slots. If you are unsure, say N. 339 340config ACPI_SYSTEM 341 bool 342 default y 343 help 344 This driver will enable your system to shut down using ACPI, and 345 dump your ACPI DSDT table using /proc/acpi/dsdt. 346 347config X86_PM_TIMER 348 bool "Power Management Timer Support" if EMBEDDED 349 depends on X86 350 default y 351 help 352 The Power Management Timer is available on all ACPI-capable, 353 in most cases even if ACPI is unusable or blacklisted. 354 355 This timing source is not affected by power management features 356 like aggressive processor idling, throttling, frequency and/or 357 voltage scaling, unlike the commonly used Time Stamp Counter 358 (TSC) timing source. 359 360 You should nearly always say Y here because many modern 361 systems require this timer. 362 363config ACPI_CONTAINER 364 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 365 depends on EXPERIMENTAL 366 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 367 ---help--- 368 This allows _physical_ insertion and removal of CPUs and memory. 369 This can be useful, for example, on NUMA machines that support 370 ACPI based physical hotplug of nodes, or non-NUMA machines that 371 support physical cpu/memory hot-plug. 372 373 If one selects "m", this driver can be loaded with 374 "modprobe acpi_container". 375 376config ACPI_HOTPLUG_MEMORY 377 tristate "Memory Hotplug" 378 depends on MEMORY_HOTPLUG 379 default n 380 help 381 This driver adds supports for ACPI Memory Hotplug. This driver 382 provides support for fielding notifications on ACPI memory 383 devices (PNP0C80) which represent memory ranges that may be 384 onlined or offlined during runtime. 385 386 Enabling this driver assumes that your platform hardware 387 and firmware have support for hot-plugging physical memory. If 388 your system does not support physically adding or ripping out 389 memory DIMMs at some platform defined granularity (individually 390 or as a bank) at runtime, then you need not enable this driver. 391 392 If one selects "m," this driver can be loaded using the following 393 command: 394 $>modprobe acpi_memhotplug 395 396config ACPI_SBS 397 tristate "Smart Battery System" 398 depends on X86 399 help 400 This driver adds support for the Smart Battery System, another 401 type of access to battery information, found on some laptops. 402 403endif # ACPI 404