Kconfig 21 KB

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  1. #
  2. # X86 Platform Specific Drivers
  3. #
  4. menuconfig X86_PLATFORM_DEVICES
  5. bool "X86 Platform Specific Device Drivers"
  6. default y
  7. depends on X86
  8. ---help---
  9. Say Y here to get to see options for device drivers for various
  10. x86 platforms, including vendor-specific laptop extension drivers.
  11. This option alone does not add any kernel code.
  12. If you say N, all options in this submenu will be skipped and disabled.
  13. if X86_PLATFORM_DEVICES
  14. config ACER_WMI
  15. tristate "Acer WMI Laptop Extras"
  16. depends on ACPI
  17. depends on LEDS_CLASS
  18. depends on NEW_LEDS
  19. depends on BACKLIGHT_CLASS_DEVICE
  20. depends on SERIO_I8042
  21. depends on RFKILL || RFKILL = n
  22. select ACPI_WMI
  23. ---help---
  24. This is a driver for newer Acer (and Wistron) laptops. It adds
  25. wireless radio and bluetooth control, and on some laptops,
  26. exposes the mail LED and LCD backlight.
  27. For more information about this driver see
  28. <file:Documentation/laptops/acer-wmi.txt>
  29. If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
  30. here.
  31. config ACERHDF
  32. tristate "Acer Aspire One temperature and fan driver"
  33. depends on THERMAL && THERMAL_HWMON && ACPI
  34. ---help---
  35. This is a driver for Acer Aspire One netbooks. It allows to access
  36. the temperature sensor and to control the fan.
  37. After loading this driver the BIOS is still in control of the fan.
  38. To let the kernel handle the fan, do:
  39. echo -n enabled > /sys/class/thermal/thermal_zone0/mode
  40. For more information about this driver see
  41. <http://piie.net/files/acerhdf_README.txt>
  42. If you have an Acer Aspire One netbook, say Y or M
  43. here.
  44. config ASUS_LAPTOP
  45. tristate "Asus Laptop Extras"
  46. depends on ACPI
  47. depends on !ACPI_ASUS
  48. select LEDS_CLASS
  49. select NEW_LEDS
  50. select BACKLIGHT_CLASS_DEVICE
  51. depends on INPUT
  52. depends on RFKILL || RFKILL = n
  53. select INPUT_SPARSEKMAP
  54. ---help---
  55. This is the new Linux driver for Asus laptops. It may also support some
  56. MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
  57. standard ACPI events and input events. It also adds
  58. support for video output switching, LCD backlight control, Bluetooth and
  59. Wlan control, and most importantly, allows you to blink those fancy LEDs.
  60. For more information and a userspace daemon for handling the extra
  61. buttons see <http://acpi4asus.sf.net>.
  62. If you have an ACPI-compatible ASUS laptop, say Y or M here.
  63. config DELL_LAPTOP
  64. tristate "Dell Laptop Extras (EXPERIMENTAL)"
  65. depends on X86
  66. depends on DCDBAS
  67. depends on EXPERIMENTAL
  68. depends on BACKLIGHT_CLASS_DEVICE
  69. depends on RFKILL || RFKILL = n
  70. depends on POWER_SUPPLY
  71. depends on SERIO_I8042
  72. default n
  73. ---help---
  74. This driver adds support for rfkill and backlight control to Dell
  75. laptops.
  76. config DELL_WMI
  77. tristate "Dell WMI extras"
  78. depends on ACPI_WMI
  79. depends on INPUT
  80. select INPUT_SPARSEKMAP
  81. ---help---
  82. Say Y here if you want to support WMI-based hotkeys on Dell laptops.
  83. To compile this driver as a module, choose M here: the module will
  84. be called dell-wmi.
  85. config FUJITSU_LAPTOP
  86. tristate "Fujitsu Laptop Extras"
  87. depends on ACPI
  88. depends on INPUT
  89. depends on BACKLIGHT_CLASS_DEVICE
  90. depends on LEDS_CLASS || LEDS_CLASS=n
  91. ---help---
  92. This is a driver for laptops built by Fujitsu:
  93. * P2xxx/P5xxx/S6xxx/S7xxx series Lifebooks
  94. * Possibly other Fujitsu laptop models
  95. * Tested with S6410 and S7020
  96. It adds support for LCD brightness control and some hotkeys.
  97. If you have a Fujitsu laptop, say Y or M here.
  98. config FUJITSU_LAPTOP_DEBUG
  99. bool "Verbose debug mode for Fujitsu Laptop Extras"
  100. depends on FUJITSU_LAPTOP
  101. default n
  102. ---help---
  103. Enables extra debug output from the fujitsu extras driver, at the
  104. expense of a slight increase in driver size.
  105. If you are not sure, say N here.
  106. config TC1100_WMI
  107. tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)"
  108. depends on !X86_64
  109. depends on EXPERIMENTAL
  110. depends on ACPI
  111. select ACPI_WMI
  112. ---help---
  113. This is a driver for the WMI extensions (wireless and bluetooth power
  114. control) of the HP Compaq TC1100 tablet.
  115. config HP_WMI
  116. tristate "HP WMI extras"
  117. depends on ACPI_WMI
  118. depends on INPUT
  119. depends on RFKILL || RFKILL = n
  120. select INPUT_SPARSEKMAP
  121. help
  122. Say Y here if you want to support WMI-based hotkeys on HP laptops and
  123. to read data from WMI such as docking or ambient light sensor state.
  124. To compile this driver as a module, choose M here: the module will
  125. be called hp-wmi.
  126. config MSI_LAPTOP
  127. tristate "MSI Laptop Extras"
  128. depends on ACPI
  129. depends on BACKLIGHT_CLASS_DEVICE
  130. depends on RFKILL
  131. depends on SERIO_I8042
  132. ---help---
  133. This is a driver for laptops built by MSI (MICRO-STAR
  134. INTERNATIONAL):
  135. MSI MegaBook S270 (MS-1013)
  136. Cytron/TCM/Medion/Tchibo MD96100/SAM2000
  137. It adds support for Bluetooth, WLAN and LCD brightness control.
  138. More information about this driver is available at
  139. <http://0pointer.de/lennart/tchibo.html>.
  140. If you have an MSI S270 laptop, say Y or M here.
  141. config PANASONIC_LAPTOP
  142. tristate "Panasonic Laptop Extras"
  143. depends on INPUT && ACPI
  144. depends on BACKLIGHT_CLASS_DEVICE
  145. select INPUT_SPARSEKMAP
  146. ---help---
  147. This driver adds support for access to backlight control and hotkeys
  148. on Panasonic Let's Note laptops.
  149. If you have a Panasonic Let's note laptop (such as the R1(N variant),
  150. R2, R3, R5, T2, W2 and Y2 series), say Y.
  151. config COMPAL_LAPTOP
  152. tristate "Compal Laptop Extras"
  153. depends on ACPI
  154. depends on BACKLIGHT_CLASS_DEVICE
  155. depends on RFKILL
  156. depends on HWMON
  157. depends on POWER_SUPPLY
  158. ---help---
  159. This is a driver for laptops built by Compal:
  160. Compal FL90/IFL90
  161. Compal FL91/IFL91
  162. Compal FL92/JFL92
  163. Compal FT00/IFT00
  164. It adds support for Bluetooth, WLAN and LCD brightness control.
  165. If you have an Compal FL9x/IFL9x/FT00 laptop, say Y or M here.
  166. config SONY_LAPTOP
  167. tristate "Sony Laptop Extras"
  168. depends on ACPI
  169. select BACKLIGHT_CLASS_DEVICE
  170. depends on INPUT
  171. depends on RFKILL
  172. ---help---
  173. This mini-driver drives the SNC and SPIC devices present in the ACPI
  174. BIOS of the Sony Vaio laptops.
  175. It gives access to some extra laptop functionalities like Bluetooth,
  176. screen brightness control, Fn keys and allows powering on/off some
  177. devices.
  178. Read <file:Documentation/laptops/sony-laptop.txt> for more information.
  179. config SONYPI_COMPAT
  180. bool "Sonypi compatibility"
  181. depends on SONY_LAPTOP
  182. ---help---
  183. Build the sonypi driver compatibility code into the sony-laptop driver.
  184. config IDEAPAD_LAPTOP
  185. tristate "Lenovo IdeaPad Laptop Extras"
  186. depends on ACPI
  187. depends on RFKILL
  188. select INPUT_SPARSEKMAP
  189. help
  190. This is a driver for the rfkill switches on Lenovo IdeaPad netbooks.
  191. config THINKPAD_ACPI
  192. tristate "ThinkPad ACPI Laptop Extras"
  193. depends on ACPI
  194. depends on INPUT
  195. depends on RFKILL || RFKILL = n
  196. select BACKLIGHT_LCD_SUPPORT
  197. select BACKLIGHT_CLASS_DEVICE
  198. select HWMON
  199. select NVRAM
  200. select NEW_LEDS
  201. select LEDS_CLASS
  202. ---help---
  203. This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
  204. support for Fn-Fx key combinations, Bluetooth control, video
  205. output switching, ThinkLight control, UltraBay eject and more.
  206. For more information about this driver see
  207. <file:Documentation/laptops/thinkpad-acpi.txt> and
  208. <http://ibm-acpi.sf.net/> .
  209. This driver was formerly known as ibm-acpi.
  210. Extra functionality will be available if the rfkill (CONFIG_RFKILL)
  211. and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
  212. Note that if you want ThinkPad-ACPI to be built-in instead of
  213. modular, ALSA and rfkill will also have to be built-in.
  214. If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
  215. config THINKPAD_ACPI_ALSA_SUPPORT
  216. bool "Console audio control ALSA interface"
  217. depends on THINKPAD_ACPI
  218. depends on SND
  219. depends on SND = y || THINKPAD_ACPI = SND
  220. default y
  221. ---help---
  222. Enables monitoring of the built-in console audio output control
  223. (headphone and speakers), which is operated by the mute and (in
  224. some ThinkPad models) volume hotkeys.
  225. If this option is enabled, ThinkPad-ACPI will export an ALSA card
  226. with a single read-only mixer control, which should be used for
  227. on-screen-display feedback purposes by the Desktop Environment.
  228. Optionally, the driver will also allow software control (the
  229. ALSA mixer will be made read-write). Please refer to the driver
  230. documentation for details.
  231. All IBM models have both volume and mute control. Newer Lenovo
  232. models only have mute control (the volume hotkeys are just normal
  233. keys and volume control is done through the main HDA mixer).
  234. config THINKPAD_ACPI_DEBUGFACILITIES
  235. bool "Maintainer debug facilities"
  236. depends on THINKPAD_ACPI
  237. default n
  238. ---help---
  239. Enables extra stuff in the thinkpad-acpi which is completely useless
  240. for normal use. Read the driver source to find out what it does.
  241. Say N here, unless you were told by a kernel maintainer to do
  242. otherwise.
  243. config THINKPAD_ACPI_DEBUG
  244. bool "Verbose debug mode"
  245. depends on THINKPAD_ACPI
  246. default n
  247. ---help---
  248. Enables extra debugging information, at the expense of a slightly
  249. increase in driver size.
  250. If you are not sure, say N here.
  251. config THINKPAD_ACPI_UNSAFE_LEDS
  252. bool "Allow control of important LEDs (unsafe)"
  253. depends on THINKPAD_ACPI
  254. default n
  255. ---help---
  256. Overriding LED state on ThinkPads can mask important
  257. firmware alerts (like critical battery condition), or misled
  258. the user into damaging the hardware (undocking or ejecting
  259. the bay while buses are still active), etc.
  260. LED control on the ThinkPad is write-only (with very few
  261. exceptions on very ancient models), which makes it
  262. impossible to know beforehand if important information will
  263. be lost when one changes LED state.
  264. Users that know what they are doing can enable this option
  265. and the driver will allow control of every LED, including
  266. the ones on the dock stations.
  267. Never enable this option on a distribution kernel.
  268. Say N here, unless you are building a kernel for your own
  269. use, and need to control the important firmware LEDs.
  270. config THINKPAD_ACPI_VIDEO
  271. bool "Video output control support"
  272. depends on THINKPAD_ACPI
  273. default y
  274. ---help---
  275. Allows the thinkpad_acpi driver to provide an interface to control
  276. the various video output ports.
  277. This feature often won't work well, depending on ThinkPad model,
  278. display state, video output devices in use, whether there is a X
  279. server running, phase of the moon, and the current mood of
  280. Schroedinger's cat. If you can use X.org's RandR to control
  281. your ThinkPad's video output ports instead of this feature,
  282. don't think twice: do it and say N here to save memory and avoid
  283. bad interactions with X.org.
  284. NOTE: access to this feature is limited to processes with the
  285. CAP_SYS_ADMIN capability, to avoid local DoS issues in platforms
  286. where it interacts badly with X.org.
  287. If you are not sure, say Y here but do try to check if you could
  288. be using X.org RandR instead.
  289. config THINKPAD_ACPI_HOTKEY_POLL
  290. bool "Support NVRAM polling for hot keys"
  291. depends on THINKPAD_ACPI
  292. default y
  293. ---help---
  294. Some thinkpad models benefit from NVRAM polling to detect a few of
  295. the hot key press events. If you know your ThinkPad model does not
  296. need to do NVRAM polling to support any of the hot keys you use,
  297. unselecting this option will save about 1kB of memory.
  298. ThinkPads T40 and newer, R52 and newer, and X31 and newer are
  299. unlikely to need NVRAM polling in their latest BIOS versions.
  300. NVRAM polling can detect at most the following keys: ThinkPad/Access
  301. IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
  302. Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
  303. If you are not sure, say Y here. The driver enables polling only if
  304. it is strictly necessary to do so.
  305. config SENSORS_HDAPS
  306. tristate "Thinkpad Hard Drive Active Protection System (hdaps)"
  307. depends on INPUT && X86
  308. select INPUT_POLLDEV
  309. default n
  310. help
  311. This driver provides support for the IBM Hard Drive Active Protection
  312. System (hdaps), which provides an accelerometer and other misc. data.
  313. ThinkPads starting with the R50, T41, and X40 are supported. The
  314. accelerometer data is readable via sysfs.
  315. This driver also provides an absolute input class device, allowing
  316. the laptop to act as a pinball machine-esque joystick.
  317. If your ThinkPad is not recognized by the driver, please update to latest
  318. BIOS. This is especially the case for some R52 ThinkPads.
  319. Say Y here if you have an applicable laptop and want to experience
  320. the awesome power of hdaps.
  321. config INTEL_MENLOW
  322. tristate "Thermal Management driver for Intel menlow platform"
  323. depends on ACPI_THERMAL
  324. select THERMAL
  325. ---help---
  326. ACPI thermal management enhancement driver on
  327. Intel Menlow platform.
  328. If unsure, say N.
  329. config EEEPC_LAPTOP
  330. tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
  331. depends on ACPI
  332. depends on INPUT
  333. depends on EXPERIMENTAL
  334. depends on RFKILL || RFKILL = n
  335. depends on HOTPLUG_PCI
  336. select BACKLIGHT_CLASS_DEVICE
  337. select HWMON
  338. select LEDS_CLASS
  339. select NEW_LEDS
  340. select INPUT_SPARSEKMAP
  341. ---help---
  342. This driver supports the Fn-Fx keys on Eee PC laptops.
  343. It also gives access to some extra laptop functionalities like
  344. Bluetooth, backlight and allows powering on/off some other
  345. devices.
  346. If you have an Eee PC laptop, say Y or M here.
  347. config EEEPC_WMI
  348. tristate "Eee PC WMI Hotkey Driver (EXPERIMENTAL)"
  349. depends on ACPI_WMI
  350. depends on INPUT
  351. depends on EXPERIMENTAL
  352. depends on BACKLIGHT_CLASS_DEVICE
  353. depends on RFKILL || RFKILL = n
  354. select INPUT_SPARSEKMAP
  355. select LEDS_CLASS
  356. select NEW_LEDS
  357. ---help---
  358. Say Y here if you want to support WMI-based hotkeys on Eee PC laptops.
  359. To compile this driver as a module, choose M here: the module will
  360. be called eeepc-wmi.
  361. config ACPI_WMI
  362. tristate "WMI"
  363. depends on ACPI
  364. help
  365. This driver adds support for the ACPI-WMI (Windows Management
  366. Instrumentation) mapper device (PNP0C14) found on some systems.
  367. ACPI-WMI is a proprietary extension to ACPI to expose parts of the
  368. ACPI firmware to userspace - this is done through various vendor
  369. defined methods and data blocks in a PNP0C14 device, which are then
  370. made available for userspace to call.
  371. The implementation of this in Linux currently only exposes this to
  372. other kernel space drivers.
  373. This driver is a required dependency to build the firmware specific
  374. drivers needed on many machines, including Acer and HP laptops.
  375. It is safe to enable this driver even if your DSDT doesn't define
  376. any ACPI-WMI devices.
  377. config MSI_WMI
  378. tristate "MSI WMI extras"
  379. depends on ACPI_WMI
  380. depends on INPUT
  381. depends on BACKLIGHT_CLASS_DEVICE
  382. select INPUT_SPARSEKMAP
  383. help
  384. Say Y here if you want to support WMI-based hotkeys on MSI laptops.
  385. To compile this driver as a module, choose M here: the module will
  386. be called msi-wmi.
  387. config ACPI_ASUS
  388. tristate "ASUS/Medion Laptop Extras (DEPRECATED)"
  389. depends on ACPI
  390. select BACKLIGHT_CLASS_DEVICE
  391. ---help---
  392. This driver provides support for extra features of ACPI-compatible
  393. ASUS laptops. As some of Medion laptops are made by ASUS, it may also
  394. support some Medion laptops (such as 9675 for example). It makes all
  395. the extra buttons generate standard ACPI events that go through
  396. /proc/acpi/events, and (on some models) adds support for changing the
  397. display brightness and output, switching the LCD backlight on and off,
  398. and most importantly, allows you to blink those fancy LEDs intended
  399. for reporting mail and wireless status.
  400. Note: display switching code is currently considered EXPERIMENTAL,
  401. toying with these values may even lock your machine.
  402. All settings are changed via /proc/acpi/asus directory entries. Owner
  403. and group for these entries can be set with asus_uid and asus_gid
  404. parameters.
  405. More information and a userspace daemon for handling the extra buttons
  406. at <http://acpi4asus.sf.net>.
  407. If you have an ACPI-compatible ASUS laptop, say Y or M here. This
  408. driver is still under development, so if your laptop is unsupported or
  409. something works not quite as expected, please use the mailing list
  410. available on the above page (acpi4asus-user@lists.sourceforge.net).
  411. NOTE: This driver is deprecated and will probably be removed soon,
  412. use asus-laptop instead.
  413. config TOPSTAR_LAPTOP
  414. tristate "Topstar Laptop Extras"
  415. depends on ACPI
  416. depends on INPUT
  417. select INPUT_SPARSEKMAP
  418. ---help---
  419. This driver adds support for hotkeys found on Topstar laptops.
  420. If you have a Topstar laptop, say Y or M here.
  421. config ACPI_TOSHIBA
  422. tristate "Toshiba Laptop Extras"
  423. depends on ACPI
  424. depends on LEDS_CLASS
  425. depends on NEW_LEDS
  426. depends on BACKLIGHT_CLASS_DEVICE
  427. depends on INPUT
  428. depends on RFKILL || RFKILL = n
  429. select INPUT_POLLDEV
  430. select INPUT_SPARSEKMAP
  431. ---help---
  432. This driver adds support for access to certain system settings
  433. on "legacy free" Toshiba laptops. These laptops can be recognized by
  434. their lack of a BIOS setup menu and APM support.
  435. On these machines, all system configuration is handled through the
  436. ACPI. This driver is required for access to controls not covered
  437. by the general ACPI drivers, such as LCD brightness, video output,
  438. etc.
  439. This driver differs from the non-ACPI Toshiba laptop driver (located
  440. under "Processor type and features") in several aspects.
  441. Configuration is accessed by reading and writing text files in the
  442. /proc tree instead of by program interface to /dev. Furthermore, no
  443. power management functions are exposed, as those are handled by the
  444. general ACPI drivers.
  445. More information about this driver is available at
  446. <http://memebeam.org/toys/ToshibaAcpiDriver>.
  447. If you have a legacy free Toshiba laptop (such as the Libretto L1
  448. series), say Y.
  449. config TOSHIBA_BT_RFKILL
  450. tristate "Toshiba Bluetooth RFKill switch support"
  451. depends on ACPI
  452. ---help---
  453. This driver adds support for Bluetooth events for the RFKill
  454. switch on modern Toshiba laptops with full ACPI support and
  455. an RFKill switch.
  456. This driver handles RFKill events for the TOS6205 Bluetooth,
  457. and re-enables it when the switch is set back to the 'on'
  458. position.
  459. If you have a modern Toshiba laptop with a Bluetooth and an
  460. RFKill switch (such as the Portege R500), say Y.
  461. config ACPI_CMPC
  462. tristate "CMPC Laptop Extras"
  463. depends on X86 && ACPI
  464. depends on RFKILL || RFKILL=n
  465. select INPUT
  466. select BACKLIGHT_CLASS_DEVICE
  467. default n
  468. help
  469. Support for Intel Classmate PC ACPI devices, including some
  470. keys as input device, backlight device, tablet and accelerometer
  471. devices.
  472. config INTEL_SCU_IPC
  473. bool "Intel SCU IPC Support"
  474. depends on X86_MRST
  475. default y
  476. ---help---
  477. IPC is used to bridge the communications between kernel and SCU on
  478. some embedded Intel x86 platforms. This is not needed for PC-type
  479. machines.
  480. config INTEL_SCU_IPC_UTIL
  481. tristate "Intel SCU IPC utility driver"
  482. depends on INTEL_SCU_IPC
  483. default y
  484. ---help---
  485. The IPC Util driver provides an interface with the SCU enabling
  486. low level access for debug work and updating the firmware. Say
  487. N unless you will be doing this on an Intel MID platform.
  488. config GPIO_INTEL_PMIC
  489. bool "Intel PMIC GPIO support"
  490. depends on INTEL_SCU_IPC && GPIOLIB
  491. ---help---
  492. Say Y here to support GPIO via the SCU IPC interface
  493. on Intel MID platforms.
  494. config RAR_REGISTER
  495. bool "Restricted Access Region Register Driver"
  496. depends on PCI && X86_MRST
  497. default n
  498. ---help---
  499. This driver allows other kernel drivers access to the
  500. contents of the restricted access region control registers.
  501. The restricted access region control registers
  502. (rar_registers) are used to pass address and
  503. locking information on restricted access regions
  504. to other drivers that use restricted access regions.
  505. The restricted access regions are regions of memory
  506. on the Intel MID Platform that are not accessible to
  507. the x86 processor, but are accessible to dedicated
  508. processors on board peripheral devices.
  509. The purpose of the restricted access regions is to
  510. protect sensitive data from compromise by unauthorized
  511. programs running on the x86 processor.
  512. config INTEL_IPS
  513. tristate "Intel Intelligent Power Sharing"
  514. depends on ACPI
  515. ---help---
  516. Intel Calpella platforms support dynamic power sharing between the
  517. CPU and GPU, maximizing performance in a given TDP. This driver,
  518. along with the CPU frequency and i915 drivers, provides that
  519. functionality. If in doubt, say Y here; it will only load on
  520. supported platforms.
  521. config IBM_RTL
  522. tristate "Device driver to enable PRTL support"
  523. depends on X86 && PCI
  524. ---help---
  525. Enable support for IBM Premium Real Time Mode (PRTM).
  526. This module will allow you the enter and exit PRTM in the BIOS via
  527. sysfs on platforms that support this feature. System in PRTM will
  528. not receive CPU-generated SMIs for recoverable errors. Use of this
  529. feature without proper support may void your hardware warranty.
  530. If the proper BIOS support is found the driver will load and create
  531. /sys/devices/system/ibm_rtl/. The "state" variable will indicate
  532. whether or not the BIOS is in PRTM.
  533. state = 0 (BIOS SMIs on)
  534. state = 1 (BIOS SMIs off)
  535. config XO1_RFKILL
  536. tristate "OLPC XO-1 software RF kill switch"
  537. depends on OLPC
  538. depends on RFKILL
  539. ---help---
  540. Support for enabling/disabling the WLAN interface on the OLPC XO-1
  541. laptop.
  542. endif # X86_PLATFORM_DEVICES