Kconfig 12 KB

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  1. #
  2. # ACPI Configuration
  3. #
  4. menuconfig ACPI
  5. bool "ACPI (Advanced Configuration and Power Interface) Support"
  6. depends on !IA64_HP_SIM
  7. depends on IA64 || X86
  8. depends on PCI
  9. depends on PM
  10. select PNP
  11. select CPU_IDLE
  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. Linux ACPI provides a robust functional replacement for several
  20. legacy configuration and power management interfaces, including
  21. the Plug-and-Play BIOS specification (PnP BIOS), the
  22. MultiProcessor Specification (MPS), and the Advanced Power
  23. Management (APM) specification. If both ACPI and APM support
  24. are configured, ACPI is used.
  25. The project home page for the Linux ACPI subsystem is here:
  26. <http://www.lesswatts.org/projects/acpi/>
  27. Linux support for ACPI is based on Intel Corporation's ACPI
  28. Component Architecture (ACPI CA). For more information on the
  29. ACPI CA, see:
  30. <http://acpica.org/>
  31. ACPI is an open industry specification co-developed by
  32. Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  33. The specification is available at:
  34. <http://www.acpi.info>
  35. if ACPI
  36. config ACPI_SLEEP
  37. bool
  38. depends on SUSPEND || HIBERNATION
  39. default y
  40. config ACPI_PROCFS
  41. bool "Deprecated /proc/acpi files"
  42. depends on PROC_FS
  43. help
  44. For backwards compatibility, this option allows
  45. deprecated /proc/acpi/ files to exist, even when
  46. they have been replaced by functions in /sys.
  47. The deprecated files (and their replacements) include:
  48. /proc/acpi/sleep (/sys/power/state)
  49. /proc/acpi/info (/sys/module/acpi/parameters/acpica_version)
  50. /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
  51. /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
  52. /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
  53. /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
  54. /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*)
  55. /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/
  56. cpufreq/*)
  57. /proc/acpi/processor/*/throttling (/sys/class/thermal/
  58. cooling_device*/*)
  59. This option has no effect on /proc/acpi/ files
  60. and functions which do not yet exist in /sys.
  61. Say N to delete /proc/acpi/ files that have moved to /sys/
  62. config ACPI_PROCFS_POWER
  63. bool "Deprecated power /proc/acpi directories"
  64. depends on PROC_FS
  65. default y
  66. help
  67. For backwards compatibility, this option allows
  68. deprecated power /proc/acpi/ directories to exist, even when
  69. they have been replaced by functions in /sys.
  70. The deprecated directories (and their replacements) include:
  71. /proc/acpi/battery/* (/sys/class/power_supply/*)
  72. /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  73. This option has no effect on /proc/acpi/ directories
  74. and functions, which do not yet exist in /sys
  75. Say N to delete power /proc/acpi/ directories that have moved to /sys/
  76. config ACPI_POWER_METER
  77. tristate "ACPI 4.0 power meter"
  78. depends on HWMON
  79. help
  80. This driver exposes ACPI 4.0 power meters as hardware monitoring
  81. devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware
  82. and a power meter.
  83. To compile this driver as a module, choose M here:
  84. the module will be called power-meter.
  85. config ACPI_SYSFS_POWER
  86. bool "Future power /sys interface"
  87. select POWER_SUPPLY
  88. default y
  89. help
  90. Say N to disable power /sys interface
  91. config ACPI_EC_DEBUGFS
  92. tristate "EC read/write access through /sys/kernel/debug/ec"
  93. default y
  94. help
  95. Say N to disable Embedded Controller /sys/kernel/debug interface
  96. An Embedded Controller typically is available on laptops and reads
  97. sensor values like battery state and temperature.
  98. The kernel access the EC through ACPI parsed code provided by BIOS
  99. tables.
  100. Thus this option is a debug option that helps to write ACPI drivers
  101. and can be used to identify ACPI code or EC firmware bugs.
  102. config ACPI_PROC_EVENT
  103. bool "Deprecated /proc/acpi/event support"
  104. depends on PROC_FS
  105. default y
  106. help
  107. A user-space daemon, acpid, typically reads /proc/acpi/event
  108. and handles all ACPI-generated events.
  109. These events are now delivered to user-space either
  110. via the input layer or as netlink events.
  111. This build option enables the old code for legacy
  112. user-space implementation. After some time, this will
  113. be moved under CONFIG_ACPI_PROCFS, and then deleted.
  114. Say Y here to retain the old behaviour. Say N if your
  115. user-space is newer than kernel 2.6.23 (September 2007).
  116. config ACPI_AC
  117. tristate "AC Adapter"
  118. depends on X86
  119. default y
  120. help
  121. This driver supports the AC Adapter object, which indicates
  122. whether a system is on AC or not. If you have a system that can
  123. switch between A/C and battery, say Y.
  124. To compile this driver as a module, choose M here:
  125. the module will be called ac.
  126. config ACPI_BATTERY
  127. tristate "Battery"
  128. depends on X86
  129. default y
  130. help
  131. This driver adds support for battery information through
  132. /proc/acpi/battery. If you have a mobile system with a battery,
  133. say Y.
  134. To compile this driver as a module, choose M here:
  135. the module will be called battery.
  136. config ACPI_BUTTON
  137. tristate "Button"
  138. depends on INPUT
  139. default y
  140. help
  141. This driver handles events on the power, sleep, and lid buttons.
  142. A daemon reads /proc/acpi/event and perform user-defined actions
  143. such as shutting down the system. This is necessary for
  144. software-controlled poweroff.
  145. To compile this driver as a module, choose M here:
  146. the module will be called button.
  147. config ACPI_VIDEO
  148. tristate "Video"
  149. depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
  150. depends on INPUT
  151. select THERMAL
  152. help
  153. This driver implements the ACPI Extensions For Display Adapters
  154. for integrated graphics devices on motherboard, as specified in
  155. ACPI 2.0 Specification, Appendix B. This supports basic operations
  156. such as defining the video POST device, retrieving EDID information,
  157. and setting up a video output.
  158. To compile this driver as a module, choose M here:
  159. the module will be called video.
  160. config ACPI_FAN
  161. tristate "Fan"
  162. select THERMAL
  163. default y
  164. help
  165. This driver supports ACPI fan devices, allowing user-mode
  166. applications to perform basic fan control (on, off, status).
  167. To compile this driver as a module, choose M here:
  168. the module will be called fan.
  169. config ACPI_DOCK
  170. bool "Dock"
  171. depends on EXPERIMENTAL
  172. help
  173. This driver supports ACPI-controlled docking stations and removable
  174. drive bays such as the IBM Ultrabay and the Dell Module Bay.
  175. config 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. To compile this driver as a module, choose M here:
  185. the module will be called processor.
  186. config ACPI_HOTPLUG_CPU
  187. bool
  188. depends on ACPI_PROCESSOR && HOTPLUG_CPU
  189. select ACPI_CONTAINER
  190. default y
  191. config ACPI_PROCESSOR_AGGREGATOR
  192. tristate "Processor Aggregator"
  193. depends on ACPI_PROCESSOR
  194. depends on EXPERIMENTAL
  195. depends on X86
  196. help
  197. ACPI 4.0 defines processor Aggregator, which enables OS to perform
  198. specific processor configuration and control that applies to all
  199. processors in the platform. Currently only logical processor idling
  200. is defined, which is to reduce power consumption. This driver
  201. supports the new device.
  202. config ACPI_THERMAL
  203. tristate "Thermal Zone"
  204. depends on ACPI_PROCESSOR
  205. select THERMAL
  206. default y
  207. help
  208. This driver supports ACPI thermal zones. Most mobile and
  209. some desktop systems support ACPI thermal zones. It is HIGHLY
  210. recommended that this option be enabled, as your processor(s)
  211. may be damaged without it.
  212. To compile this driver as a module, choose M here:
  213. the module will be called thermal.
  214. config ACPI_NUMA
  215. bool "NUMA support"
  216. depends on NUMA
  217. depends on (X86 || IA64)
  218. default y if IA64_GENERIC || IA64_SGI_SN2
  219. config ACPI_CUSTOM_DSDT_FILE
  220. string "Custom DSDT Table file to include"
  221. default ""
  222. depends on !STANDALONE
  223. help
  224. This option supports a custom DSDT by linking it into the kernel.
  225. See Documentation/acpi/dsdt-override.txt
  226. Enter the full path name to the file which includes the AmlCode
  227. declaration.
  228. If unsure, don't enter a file name.
  229. config ACPI_CUSTOM_DSDT
  230. bool
  231. default ACPI_CUSTOM_DSDT_FILE != ""
  232. config ACPI_BLACKLIST_YEAR
  233. int "Disable ACPI for systems before Jan 1st this year" if X86_32
  234. default 0
  235. help
  236. Enter a 4-digit year, e.g., 2001, to disable ACPI by default
  237. on platforms with DMI BIOS date before January 1st that year.
  238. "acpi=force" can be used to override this mechanism.
  239. Enter 0 to disable this mechanism and allow ACPI to
  240. run by default no matter what the year. (default)
  241. config ACPI_DEBUG
  242. bool "Debug Statements"
  243. default n
  244. help
  245. The ACPI subsystem can produce debug output. Saying Y enables this
  246. output and increases the kernel size by around 50K.
  247. Use the acpi.debug_layer and acpi.debug_level kernel command-line
  248. parameters documented in Documentation/acpi/debug.txt and
  249. Documentation/kernel-parameters.txt to control the type and
  250. amount of debug output.
  251. config ACPI_DEBUG_FUNC_TRACE
  252. bool "Additionally enable ACPI function tracing"
  253. default n
  254. depends on ACPI_DEBUG
  255. help
  256. ACPI Debug Statements slow down ACPI processing. Function trace
  257. is about half of the penalty and is rarely useful.
  258. config ACPI_PCI_SLOT
  259. tristate "PCI slot detection driver"
  260. depends on SYSFS
  261. default n
  262. help
  263. This driver creates entries in /sys/bus/pci/slots/ for all PCI
  264. slots in the system. This can help correlate PCI bus addresses,
  265. i.e., segment/bus/device/function tuples, with physical slots in
  266. the system. If you are unsure, say N.
  267. To compile this driver as a module, choose M here:
  268. the module will be called pci_slot.
  269. config X86_PM_TIMER
  270. bool "Power Management Timer Support" if EMBEDDED
  271. depends on X86
  272. default y
  273. help
  274. The Power Management Timer is available on all ACPI-capable,
  275. in most cases even if ACPI is unusable or blacklisted.
  276. This timing source is not affected by power management features
  277. like aggressive processor idling, throttling, frequency and/or
  278. voltage scaling, unlike the commonly used Time Stamp Counter
  279. (TSC) timing source.
  280. You should nearly always say Y here because many modern
  281. systems require this timer.
  282. config ACPI_CONTAINER
  283. tristate "Container and Module Devices (EXPERIMENTAL)"
  284. depends on EXPERIMENTAL
  285. default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
  286. help
  287. This driver supports ACPI Container and Module devices (IDs
  288. ACPI0004, PNP0A05, and PNP0A06).
  289. This helps support hotplug of nodes, CPUs, and memory.
  290. To compile this driver as a module, choose M here:
  291. the module will be called container.
  292. config ACPI_HOTPLUG_MEMORY
  293. tristate "Memory Hotplug"
  294. depends on MEMORY_HOTPLUG
  295. default n
  296. help
  297. This driver supports ACPI memory hotplug. The driver
  298. fields notifications on ACPI memory devices (PNP0C80),
  299. which represent memory ranges that may be onlined or
  300. offlined during runtime.
  301. If your hardware and firmware do not support adding or
  302. removing memory devices at runtime, you need not enable
  303. this driver.
  304. To compile this driver as a module, choose M here:
  305. the module will be called acpi_memhotplug.
  306. config ACPI_SBS
  307. tristate "Smart Battery System"
  308. depends on X86
  309. help
  310. This driver supports the Smart Battery System, another
  311. type of access to battery information, found on some laptops.
  312. To compile this driver as a module, choose M here:
  313. the modules will be called sbs and sbshc.
  314. config ACPI_HED
  315. tristate "Hardware Error Device"
  316. help
  317. This driver supports the Hardware Error Device (PNP0C33),
  318. which is used to report some hardware errors notified via
  319. SCI, mainly the corrected errors.
  320. source "drivers/acpi/apei/Kconfig"
  321. endif # ACPI