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. default y
  12. help
  13. Advanced Configuration and Power Interface (ACPI) support for
  14. Linux requires an ACPI-compliant platform (hardware/firmware),
  15. and assumes the presence of OS-directed configuration and power
  16. management (OSPM) software. This option will enlarge your
  17. kernel by about 70K.
  18. Linux ACPI provides a robust functional replacement for several
  19. legacy configuration and power management interfaces, including
  20. the Plug-and-Play BIOS specification (PnP BIOS), the
  21. MultiProcessor Specification (MPS), and the Advanced Power
  22. Management (APM) specification. If both ACPI and APM support
  23. are configured, ACPI is used.
  24. The project home page for the Linux ACPI subsystem is here:
  25. <http://www.lesswatts.org/projects/acpi/>
  26. Linux support for ACPI is based on Intel Corporation's ACPI
  27. Component Architecture (ACPI CA). For more information on the
  28. ACPI CA, see:
  29. <http://acpica.org/>
  30. ACPI is an open industry specification co-developed by
  31. Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  32. The specification is available at:
  33. <http://www.acpi.info>
  34. if ACPI
  35. config ACPI_SLEEP
  36. bool
  37. depends on SUSPEND || HIBERNATION
  38. default y
  39. config ACPI_PROCFS
  40. bool "Deprecated /proc/acpi files"
  41. depends on PROC_FS
  42. help
  43. For backwards compatibility, this option allows
  44. deprecated /proc/acpi/ files to exist, even when
  45. they have been replaced by functions in /sys.
  46. The deprecated files (and their replacements) include:
  47. This option has no effect on /proc/acpi/ files
  48. and functions which do not yet exist in /sys.
  49. Say N to delete /proc/acpi/ files that have moved to /sys/
  50. config ACPI_PROCFS_POWER
  51. bool "Deprecated power /proc/acpi directories"
  52. depends on PROC_FS
  53. help
  54. For backwards compatibility, this option allows
  55. deprecated power /proc/acpi/ directories to exist, even when
  56. they have been replaced by functions in /sys.
  57. The deprecated directories (and their replacements) include:
  58. /proc/acpi/battery/* (/sys/class/power_supply/*)
  59. /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  60. This option has no effect on /proc/acpi/ directories
  61. and functions, which do not yet exist in /sys
  62. This option, together with the proc directories, will be
  63. deleted in 2.6.39.
  64. Say N to delete power /proc/acpi/ directories that have moved to /sys/
  65. config ACPI_POWER_METER
  66. tristate "ACPI 4.0 power meter"
  67. depends on HWMON
  68. help
  69. This driver exposes ACPI 4.0 power meters as hardware monitoring
  70. devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware
  71. and a power meter.
  72. To compile this driver as a module, choose M here:
  73. the module will be called power-meter.
  74. config ACPI_EC_DEBUGFS
  75. tristate "EC read/write access through /sys/kernel/debug/ec"
  76. default n
  77. help
  78. Say N to disable Embedded Controller /sys/kernel/debug interface
  79. Be aware that using this interface can confuse your Embedded
  80. Controller in a way that a normal reboot is not enough. You then
  81. have to power off your system, and remove the laptop battery for
  82. some seconds.
  83. An Embedded Controller typically is available on laptops and reads
  84. sensor values like battery state and temperature.
  85. The kernel accesses the EC through ACPI parsed code provided by BIOS
  86. tables. This option allows to access the EC directly without ACPI
  87. code being involved.
  88. Thus this option is a debug option that helps to write ACPI drivers
  89. and can be used to identify ACPI code or EC firmware bugs.
  90. config ACPI_PROC_EVENT
  91. bool "Deprecated /proc/acpi/event support"
  92. depends on PROC_FS
  93. default y
  94. help
  95. A user-space daemon, acpid, typically reads /proc/acpi/event
  96. and handles all ACPI-generated events.
  97. These events are now delivered to user-space either
  98. via the input layer or as netlink events.
  99. This build option enables the old code for legacy
  100. user-space implementation. After some time, this will
  101. be moved under CONFIG_ACPI_PROCFS, and then deleted.
  102. Say Y here to retain the old behaviour. Say N if your
  103. user-space is newer than kernel 2.6.23 (September 2007).
  104. config ACPI_AC
  105. tristate "AC Adapter"
  106. depends on X86
  107. select POWER_SUPPLY
  108. default y
  109. help
  110. This driver supports the AC Adapter object, which indicates
  111. whether a system is on AC or not. If you have a system that can
  112. switch between A/C and battery, say Y.
  113. To compile this driver as a module, choose M here:
  114. the module will be called ac.
  115. config ACPI_BATTERY
  116. tristate "Battery"
  117. depends on X86
  118. select POWER_SUPPLY
  119. default y
  120. help
  121. This driver adds support for battery information through
  122. /proc/acpi/battery. If you have a mobile system with a battery,
  123. say Y.
  124. To compile this driver as a module, choose M here:
  125. the module will be called battery.
  126. config ACPI_BUTTON
  127. tristate "Button"
  128. depends on INPUT
  129. default y
  130. help
  131. This driver handles events on the power, sleep, and lid buttons.
  132. A daemon reads /proc/acpi/event and perform user-defined actions
  133. such as shutting down the system. This is necessary for
  134. software-controlled poweroff.
  135. To compile this driver as a module, choose M here:
  136. the module will be called button.
  137. config 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 implements the ACPI Extensions For Display Adapters
  144. for integrated graphics devices on motherboard, as specified in
  145. ACPI 2.0 Specification, Appendix B. This supports basic operations
  146. such as defining the video POST device, retrieving EDID information,
  147. and setting up a video output.
  148. To compile this driver as a module, choose M here:
  149. the module will be called video.
  150. config ACPI_FAN
  151. tristate "Fan"
  152. select THERMAL
  153. default y
  154. help
  155. This driver supports ACPI fan devices, allowing user-mode
  156. applications to perform basic fan control (on, off, status).
  157. To compile this driver as a module, choose M here:
  158. the module will be called fan.
  159. config ACPI_DOCK
  160. bool "Dock"
  161. depends on EXPERIMENTAL
  162. help
  163. This driver supports ACPI-controlled docking stations and removable
  164. drive bays such as the IBM Ultrabay and the Dell Module Bay.
  165. config ACPI_PROCESSOR
  166. tristate "Processor"
  167. select THERMAL
  168. select CPU_IDLE
  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. To compile this driver as a module, choose M here:
  176. the module will be called processor.
  177. config ACPI_HOTPLUG_CPU
  178. bool
  179. depends on ACPI_PROCESSOR && HOTPLUG_CPU
  180. select ACPI_CONTAINER
  181. default y
  182. config ACPI_PROCESSOR_AGGREGATOR
  183. tristate "Processor Aggregator"
  184. depends on ACPI_PROCESSOR
  185. depends on EXPERIMENTAL
  186. depends on X86
  187. help
  188. ACPI 4.0 defines processor Aggregator, which enables OS to perform
  189. specific processor configuration and control that applies to all
  190. processors in the platform. Currently only logical processor idling
  191. is defined, which is to reduce power consumption. This driver
  192. supports the new device.
  193. config ACPI_THERMAL
  194. tristate "Thermal Zone"
  195. depends on ACPI_PROCESSOR
  196. select THERMAL
  197. default y
  198. help
  199. This driver supports ACPI thermal zones. Most mobile and
  200. some desktop systems support ACPI thermal zones. It is HIGHLY
  201. recommended that this option be enabled, as your processor(s)
  202. may be damaged without it.
  203. To compile this driver as a module, choose M here:
  204. the module will be called thermal.
  205. config ACPI_NUMA
  206. bool "NUMA support"
  207. depends on NUMA
  208. depends on (X86 || IA64)
  209. default y if IA64_GENERIC || IA64_SGI_SN2
  210. config ACPI_CUSTOM_DSDT_FILE
  211. string "Custom DSDT Table file to include"
  212. default ""
  213. depends on !STANDALONE
  214. help
  215. This option supports a custom DSDT by linking it into the kernel.
  216. See Documentation/acpi/dsdt-override.txt
  217. Enter the full path name to the file which includes the AmlCode
  218. declaration.
  219. If unsure, don't enter a file name.
  220. config ACPI_CUSTOM_DSDT
  221. bool
  222. default ACPI_CUSTOM_DSDT_FILE != ""
  223. config ACPI_BLACKLIST_YEAR
  224. int "Disable ACPI for systems before Jan 1st this year" if X86_32
  225. default 0
  226. help
  227. Enter a 4-digit year, e.g., 2001, to disable ACPI by default
  228. on platforms with DMI BIOS date before January 1st that year.
  229. "acpi=force" can be used to override this mechanism.
  230. Enter 0 to disable this mechanism and allow ACPI to
  231. run by default no matter what the year. (default)
  232. config ACPI_DEBUG
  233. bool "Debug Statements"
  234. default n
  235. help
  236. The ACPI subsystem can produce debug output. Saying Y enables this
  237. output and increases the kernel size by around 50K.
  238. Use the acpi.debug_layer and acpi.debug_level kernel command-line
  239. parameters documented in Documentation/acpi/debug.txt and
  240. Documentation/kernel-parameters.txt to control the type and
  241. amount of debug output.
  242. config ACPI_DEBUG_FUNC_TRACE
  243. bool "Additionally enable ACPI function tracing"
  244. default n
  245. depends on ACPI_DEBUG
  246. help
  247. ACPI Debug Statements slow down ACPI processing. Function trace
  248. is about half of the penalty and is rarely useful.
  249. config ACPI_PCI_SLOT
  250. tristate "PCI slot detection driver"
  251. depends on SYSFS
  252. default n
  253. help
  254. This driver creates entries in /sys/bus/pci/slots/ for all PCI
  255. slots in the system. This can help correlate PCI bus addresses,
  256. i.e., segment/bus/device/function tuples, with physical slots in
  257. the system. If you are unsure, say N.
  258. To compile this driver as a module, choose M here:
  259. the module will be called pci_slot.
  260. config X86_PM_TIMER
  261. bool "Power Management Timer Support" if EMBEDDED
  262. depends on X86
  263. default y
  264. help
  265. The Power Management Timer is available on all ACPI-capable,
  266. in most cases even if ACPI is unusable or blacklisted.
  267. This timing source is not affected by power management features
  268. like aggressive processor idling, throttling, frequency and/or
  269. voltage scaling, unlike the commonly used Time Stamp Counter
  270. (TSC) timing source.
  271. You should nearly always say Y here because many modern
  272. systems require this timer.
  273. config ACPI_CONTAINER
  274. tristate "Container and Module Devices (EXPERIMENTAL)"
  275. depends on EXPERIMENTAL
  276. default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
  277. help
  278. This driver supports ACPI Container and Module devices (IDs
  279. ACPI0004, PNP0A05, and PNP0A06).
  280. This helps support hotplug of nodes, CPUs, and memory.
  281. To compile this driver as a module, choose M here:
  282. the module will be called container.
  283. config ACPI_HOTPLUG_MEMORY
  284. tristate "Memory Hotplug"
  285. depends on MEMORY_HOTPLUG
  286. default n
  287. help
  288. This driver supports ACPI memory hotplug. The driver
  289. fields notifications on ACPI memory devices (PNP0C80),
  290. which represent memory ranges that may be onlined or
  291. offlined during runtime.
  292. If your hardware and firmware do not support adding or
  293. removing memory devices at runtime, you need not enable
  294. this driver.
  295. To compile this driver as a module, choose M here:
  296. the module will be called acpi_memhotplug.
  297. config ACPI_SBS
  298. tristate "Smart Battery System"
  299. depends on X86
  300. select POWER_SUPPLY
  301. help
  302. This driver supports the Smart Battery System, another
  303. type of access to battery information, found on some laptops.
  304. To compile this driver as a module, choose M here:
  305. the modules will be called sbs and sbshc.
  306. config ACPI_HED
  307. tristate "Hardware Error Device"
  308. help
  309. This driver supports the Hardware Error Device (PNP0C33),
  310. which is used to report some hardware errors notified via
  311. SCI, mainly the corrected errors.
  312. source "drivers/acpi/apei/Kconfig"
  313. endif # ACPI