xref: /openbmc/linux/drivers/platform/x86/Kconfig (revision 565d76cb)
1#
2# X86 Platform Specific Drivers
3#
4
5menuconfig X86_PLATFORM_DEVICES
6	bool "X86 Platform Specific Device Drivers"
7	default y
8	depends on X86
9	---help---
10	  Say Y here to get to see options for device drivers for various
11	  x86 platforms, including vendor-specific laptop extension drivers.
12	  This option alone does not add any kernel code.
13
14	  If you say N, all options in this submenu will be skipped and disabled.
15
16if X86_PLATFORM_DEVICES
17
18config ACER_WMI
19	tristate "Acer WMI Laptop Extras"
20	depends on ACPI
21	select LEDS_CLASS
22	select NEW_LEDS
23	depends on BACKLIGHT_CLASS_DEVICE
24	depends on SERIO_I8042
25	depends on INPUT
26	depends on RFKILL || RFKILL = n
27	depends on ACPI_WMI
28	select INPUT_SPARSEKMAP
29	---help---
30	  This is a driver for newer Acer (and Wistron) laptops. It adds
31	  wireless radio and bluetooth control, and on some laptops,
32	  exposes the mail LED and LCD backlight.
33
34	  For more information about this driver see
35	  <file:Documentation/laptops/acer-wmi.txt>
36
37	  If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
38	  here.
39
40config ACERHDF
41	tristate "Acer Aspire One temperature and fan driver"
42	depends on THERMAL && THERMAL_HWMON && ACPI
43	---help---
44	  This is a driver for Acer Aspire One netbooks. It allows to access
45	  the temperature sensor and to control the fan.
46
47	  After loading this driver the BIOS is still in control of the fan.
48	  To let the kernel handle the fan, do:
49	  echo -n enabled > /sys/class/thermal/thermal_zone0/mode
50
51	  For more information about this driver see
52	  <http://piie.net/files/acerhdf_README.txt>
53
54	  If you have an Acer Aspire One netbook, say Y or M
55	  here.
56
57config ASUS_LAPTOP
58	tristate "Asus Laptop Extras"
59	depends on ACPI
60	depends on !ACPI_ASUS
61	select LEDS_CLASS
62	select NEW_LEDS
63	select BACKLIGHT_CLASS_DEVICE
64	depends on INPUT
65	depends on RFKILL || RFKILL = n
66	select INPUT_SPARSEKMAP
67	---help---
68	  This is the new Linux driver for Asus laptops. It may also support some
69	  MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
70	  standard ACPI events and input events. It also adds
71	  support for video output switching, LCD backlight control, Bluetooth and
72	  Wlan control, and most importantly, allows you to blink those fancy LEDs.
73
74	  For more information and a userspace daemon for handling the extra
75	  buttons see <http://acpi4asus.sf.net>.
76
77	  If you have an ACPI-compatible ASUS laptop, say Y or M here.
78
79config DELL_LAPTOP
80	tristate "Dell Laptop Extras (EXPERIMENTAL)"
81	depends on X86
82	depends on DCDBAS
83	depends on EXPERIMENTAL
84	depends on BACKLIGHT_CLASS_DEVICE
85	depends on RFKILL || RFKILL = n
86	depends on POWER_SUPPLY
87	depends on SERIO_I8042
88	default n
89	---help---
90	This driver adds support for rfkill and backlight control to Dell
91	laptops.
92
93config DELL_WMI
94	tristate "Dell WMI extras"
95	depends on ACPI_WMI
96	depends on INPUT
97	select INPUT_SPARSEKMAP
98	---help---
99	  Say Y here if you want to support WMI-based hotkeys on Dell laptops.
100
101	  To compile this driver as a module, choose M here: the module will
102	  be called dell-wmi.
103
104config FUJITSU_LAPTOP
105	tristate "Fujitsu Laptop Extras"
106	depends on ACPI
107	depends on INPUT
108	depends on BACKLIGHT_CLASS_DEVICE
109	depends on LEDS_CLASS || LEDS_CLASS=n
110	---help---
111	  This is a driver for laptops built by Fujitsu:
112
113	    * P2xxx/P5xxx/S6xxx/S7xxx series Lifebooks
114	    * Possibly other Fujitsu laptop models
115	    * Tested with S6410 and S7020
116
117	  It adds support for LCD brightness control and some hotkeys.
118
119	  If you have a Fujitsu laptop, say Y or M here.
120
121config FUJITSU_LAPTOP_DEBUG
122	bool "Verbose debug mode for Fujitsu Laptop Extras"
123	depends on FUJITSU_LAPTOP
124	default n
125	---help---
126	  Enables extra debug output from the fujitsu extras driver, at the
127	  expense of a slight increase in driver size.
128
129	  If you are not sure, say N here.
130
131config TC1100_WMI
132	tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)"
133	depends on !X86_64
134	depends on EXPERIMENTAL
135	depends on ACPI
136	depends on ACPI_WMI
137	---help---
138	  This is a driver for the WMI extensions (wireless and bluetooth power
139	  control) of the HP Compaq TC1100 tablet.
140
141config HP_ACCEL
142	tristate "HP laptop accelerometer"
143	depends on INPUT && ACPI
144	select SENSORS_LIS3LV02D
145	select NEW_LEDS
146	select LEDS_CLASS
147	help
148	  This driver provides support for the "Mobile Data Protection System 3D"
149	  or "3D DriveGuard" feature of HP laptops. On such systems the driver
150	  should load automatically (via ACPI alias).
151
152	  Support for a led indicating disk protection will be provided as
153	  hp::hddprotect. For more information on the feature, refer to
154	  Documentation/hwmon/lis3lv02d.
155
156	  To compile this driver as a module, choose M here: the module will
157	  be called hp_accel.
158
159config HP_WMI
160	tristate "HP WMI extras"
161	depends on ACPI_WMI
162	depends on INPUT
163	depends on RFKILL || RFKILL = n
164	select INPUT_SPARSEKMAP
165	help
166	 Say Y here if you want to support WMI-based hotkeys on HP laptops and
167	 to read data from WMI such as docking or ambient light sensor state.
168
169	 To compile this driver as a module, choose M here: the module will
170	 be called hp-wmi.
171
172config MSI_LAPTOP
173	tristate "MSI Laptop Extras"
174	depends on ACPI
175	depends on BACKLIGHT_CLASS_DEVICE
176	depends on RFKILL
177	depends on SERIO_I8042
178	---help---
179	  This is a driver for laptops built by MSI (MICRO-STAR
180	  INTERNATIONAL):
181
182	  MSI MegaBook S270 (MS-1013)
183	  Cytron/TCM/Medion/Tchibo MD96100/SAM2000
184
185	  It adds support for Bluetooth, WLAN and LCD brightness control.
186
187	  More information about this driver is available at
188	  <http://0pointer.de/lennart/tchibo.html>.
189
190	  If you have an MSI S270 laptop, say Y or M here.
191
192config PANASONIC_LAPTOP
193	tristate "Panasonic Laptop Extras"
194	depends on INPUT && ACPI
195	depends on BACKLIGHT_CLASS_DEVICE
196	select INPUT_SPARSEKMAP
197	---help---
198	  This driver adds support for access to backlight control and hotkeys
199	  on Panasonic Let's Note laptops.
200
201	  If you have a Panasonic Let's note laptop (such as the R1(N variant),
202	  R2, R3, R5, T2, W2 and Y2 series), say Y.
203
204config COMPAL_LAPTOP
205	tristate "Compal Laptop Extras"
206	depends on ACPI
207	depends on BACKLIGHT_CLASS_DEVICE
208	depends on RFKILL
209	depends on HWMON
210	depends on POWER_SUPPLY
211	---help---
212	  This is a driver for laptops built by Compal:
213
214	  Compal FL90/IFL90
215	  Compal FL91/IFL91
216	  Compal FL92/JFL92
217	  Compal FT00/IFT00
218
219	  It adds support for Bluetooth, WLAN and LCD brightness control.
220
221	  If you have an Compal FL9x/IFL9x/FT00 laptop, say Y or M here.
222
223config SONY_LAPTOP
224	tristate "Sony Laptop Extras"
225	depends on ACPI
226	select BACKLIGHT_CLASS_DEVICE
227	depends on INPUT
228	depends on RFKILL
229	  ---help---
230	  This mini-driver drives the SNC and SPIC devices present in the ACPI
231	  BIOS of the Sony Vaio laptops.
232
233	  It gives access to some extra laptop functionalities like Bluetooth,
234	  screen brightness control, Fn keys and allows powering on/off some
235	  devices.
236
237	  Read <file:Documentation/laptops/sony-laptop.txt> for more information.
238
239config SONYPI_COMPAT
240	bool "Sonypi compatibility"
241	depends on SONY_LAPTOP
242	  ---help---
243	  Build the sonypi driver compatibility code into the sony-laptop driver.
244
245config IDEAPAD_LAPTOP
246	tristate "Lenovo IdeaPad Laptop Extras"
247	depends on ACPI
248	depends on RFKILL && INPUT
249	select INPUT_SPARSEKMAP
250	help
251	  This is a driver for the rfkill switches on Lenovo IdeaPad netbooks.
252
253config THINKPAD_ACPI
254	tristate "ThinkPad ACPI Laptop Extras"
255	depends on ACPI
256	depends on INPUT
257	depends on RFKILL || RFKILL = n
258	select BACKLIGHT_LCD_SUPPORT
259	select BACKLIGHT_CLASS_DEVICE
260	select HWMON
261	select NVRAM
262	select NEW_LEDS
263	select LEDS_CLASS
264	---help---
265	  This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
266	  support for Fn-Fx key combinations, Bluetooth control, video
267	  output switching, ThinkLight control, UltraBay eject and more.
268	  For more information about this driver see
269	  <file:Documentation/laptops/thinkpad-acpi.txt> and
270	  <http://ibm-acpi.sf.net/> .
271
272	  This driver was formerly known as ibm-acpi.
273
274	  Extra functionality will be available if the rfkill (CONFIG_RFKILL)
275	  and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
276	  Note that if you want ThinkPad-ACPI to be built-in instead of
277	  modular, ALSA and rfkill will also have to be built-in.
278
279	  If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
280
281config THINKPAD_ACPI_ALSA_SUPPORT
282	bool "Console audio control ALSA interface"
283	depends on THINKPAD_ACPI
284	depends on SND
285	depends on SND = y || THINKPAD_ACPI = SND
286	default y
287	---help---
288	  Enables monitoring of the built-in console audio output control
289	  (headphone and speakers), which is operated by the mute and (in
290	  some ThinkPad models) volume hotkeys.
291
292	  If this option is enabled, ThinkPad-ACPI will export an ALSA card
293	  with a single read-only mixer control, which should be used for
294	  on-screen-display feedback purposes by the Desktop Environment.
295
296	  Optionally, the driver will also allow software control (the
297	  ALSA mixer will be made read-write).  Please refer to the driver
298	  documentation for details.
299
300	  All IBM models have both volume and mute control.  Newer Lenovo
301	  models only have mute control (the volume hotkeys are just normal
302	  keys and volume control is done through the main HDA mixer).
303
304config THINKPAD_ACPI_DEBUGFACILITIES
305	bool "Maintainer debug facilities"
306	depends on THINKPAD_ACPI
307	default n
308	---help---
309	  Enables extra stuff in the thinkpad-acpi which is completely useless
310	  for normal use.  Read the driver source to find out what it does.
311
312	  Say N here, unless you were told by a kernel maintainer to do
313	  otherwise.
314
315config THINKPAD_ACPI_DEBUG
316	bool "Verbose debug mode"
317	depends on THINKPAD_ACPI
318	default n
319	---help---
320	  Enables extra debugging information, at the expense of a slightly
321	  increase in driver size.
322
323	  If you are not sure, say N here.
324
325config THINKPAD_ACPI_UNSAFE_LEDS
326	bool "Allow control of important LEDs (unsafe)"
327	depends on THINKPAD_ACPI
328	default n
329	---help---
330	  Overriding LED state on ThinkPads can mask important
331	  firmware alerts (like critical battery condition), or misled
332	  the user into damaging the hardware (undocking or ejecting
333	  the bay while buses are still active), etc.
334
335	  LED control on the ThinkPad is write-only (with very few
336	  exceptions on very ancient models), which makes it
337	  impossible to know beforehand if important information will
338	  be lost when one changes LED state.
339
340	  Users that know what they are doing can enable this option
341	  and the driver will allow control of every LED, including
342	  the ones on the dock stations.
343
344	  Never enable this option on a distribution kernel.
345
346	  Say N here, unless you are building a kernel for your own
347	  use, and need to control the important firmware LEDs.
348
349config THINKPAD_ACPI_VIDEO
350	bool "Video output control support"
351	depends on THINKPAD_ACPI
352	default y
353	---help---
354	  Allows the thinkpad_acpi driver to provide an interface to control
355	  the various video output ports.
356
357	  This feature often won't work well, depending on ThinkPad model,
358	  display state, video output devices in use, whether there is a X
359	  server running, phase of the moon, and the current mood of
360	  Schroedinger's cat.  If you can use X.org's RandR to control
361	  your ThinkPad's video output ports instead of this feature,
362	  don't think twice: do it and say N here to save memory and avoid
363	  bad interactions with X.org.
364
365	  NOTE: access to this feature is limited to processes with the
366	  CAP_SYS_ADMIN capability, to avoid local DoS issues in platforms
367	  where it interacts badly with X.org.
368
369	  If you are not sure, say Y here but do try to check if you could
370	  be using X.org RandR instead.
371
372config THINKPAD_ACPI_HOTKEY_POLL
373	bool "Support NVRAM polling for hot keys"
374	depends on THINKPAD_ACPI
375	default y
376	---help---
377	  Some thinkpad models benefit from NVRAM polling to detect a few of
378	  the hot key press events.  If you know your ThinkPad model does not
379	  need to do NVRAM polling to support any of the hot keys you use,
380	  unselecting this option will save about 1kB of memory.
381
382	  ThinkPads T40 and newer, R52 and newer, and X31 and newer are
383	  unlikely to need NVRAM polling in their latest BIOS versions.
384
385	  NVRAM polling can detect at most the following keys: ThinkPad/Access
386	  IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
387	  Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
388
389	  If you are not sure, say Y here.  The driver enables polling only if
390	  it is strictly necessary to do so.
391
392config SENSORS_HDAPS
393	tristate "Thinkpad Hard Drive Active Protection System (hdaps)"
394	depends on INPUT && X86
395	select INPUT_POLLDEV
396	default n
397	help
398	  This driver provides support for the IBM Hard Drive Active Protection
399	  System (hdaps), which provides an accelerometer and other misc. data.
400	  ThinkPads starting with the R50, T41, and X40 are supported.  The
401	  accelerometer data is readable via sysfs.
402
403	  This driver also provides an absolute input class device, allowing
404	  the laptop to act as a pinball machine-esque joystick.
405
406	  If your ThinkPad is not recognized by the driver, please update to latest
407	  BIOS. This is especially the case for some R52 ThinkPads.
408
409	  Say Y here if you have an applicable laptop and want to experience
410	  the awesome power of hdaps.
411
412config INTEL_MENLOW
413	tristate "Thermal Management driver for Intel menlow platform"
414	depends on ACPI_THERMAL
415	select THERMAL
416	---help---
417	  ACPI thermal management enhancement driver on
418	  Intel Menlow platform.
419
420	  If unsure, say N.
421
422config EEEPC_LAPTOP
423	tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
424	depends on ACPI
425	depends on INPUT
426	depends on EXPERIMENTAL
427	depends on RFKILL || RFKILL = n
428	depends on HOTPLUG_PCI
429	select BACKLIGHT_CLASS_DEVICE
430	select HWMON
431	select LEDS_CLASS
432	select NEW_LEDS
433	select INPUT_SPARSEKMAP
434	---help---
435	  This driver supports the Fn-Fx keys on Eee PC laptops.
436
437	  It  also gives access to some extra laptop functionalities like
438	  Bluetooth, backlight and allows powering on/off some other
439	  devices.
440
441	  If you have an Eee PC laptop, say Y or M here.
442
443config EEEPC_WMI
444	tristate "Eee PC WMI Hotkey Driver (EXPERIMENTAL)"
445	depends on ACPI_WMI
446	depends on INPUT
447	depends on EXPERIMENTAL
448	depends on BACKLIGHT_CLASS_DEVICE
449	depends on RFKILL || RFKILL = n
450	select INPUT_SPARSEKMAP
451	select LEDS_CLASS
452	select NEW_LEDS
453	---help---
454	  Say Y here if you want to support WMI-based hotkeys on Eee PC laptops.
455
456	  To compile this driver as a module, choose M here: the module will
457	  be called eeepc-wmi.
458
459config ACPI_WMI
460	tristate "WMI"
461	depends on ACPI
462	help
463	  This driver adds support for the ACPI-WMI (Windows Management
464	  Instrumentation) mapper device (PNP0C14) found on some systems.
465
466	  ACPI-WMI is a proprietary extension to ACPI to expose parts of the
467	  ACPI firmware to userspace - this is done through various vendor
468	  defined methods and data blocks in a PNP0C14 device, which are then
469	  made available for userspace to call.
470
471	  The implementation of this in Linux currently only exposes this to
472	  other kernel space drivers.
473
474	  This driver is a required dependency to build the firmware specific
475	  drivers needed on many machines, including Acer and HP laptops.
476
477	  It is safe to enable this driver even if your DSDT doesn't define
478	  any ACPI-WMI devices.
479
480config MSI_WMI
481	tristate "MSI WMI extras"
482	depends on ACPI_WMI
483	depends on INPUT
484	depends on BACKLIGHT_CLASS_DEVICE
485	select INPUT_SPARSEKMAP
486	help
487	 Say Y here if you want to support WMI-based hotkeys on MSI laptops.
488
489	 To compile this driver as a module, choose M here: the module will
490	 be called msi-wmi.
491
492config ACPI_ASUS
493	tristate "ASUS/Medion Laptop Extras (DEPRECATED)"
494	depends on ACPI
495	select BACKLIGHT_CLASS_DEVICE
496	---help---
497	  This driver provides support for extra features of ACPI-compatible
498	  ASUS laptops. As some of Medion laptops are made by ASUS, it may also
499	  support some Medion laptops (such as 9675 for example).  It makes all
500	  the extra buttons generate standard ACPI events that go through
501	  /proc/acpi/events, and (on some models) adds support for changing the
502	  display brightness and output, switching the LCD backlight on and off,
503	  and most importantly, allows you to blink those fancy LEDs intended
504	  for reporting mail and wireless status.
505
506	  Note: display switching code is currently considered EXPERIMENTAL,
507	  toying with these values may even lock your machine.
508
509	  All settings are changed via /proc/acpi/asus directory entries. Owner
510	  and group for these entries can be set with asus_uid and asus_gid
511	  parameters.
512
513	  More information and a userspace daemon for handling the extra buttons
514	  at <http://acpi4asus.sf.net>.
515
516	  If you have an ACPI-compatible ASUS laptop, say Y or M here. This
517	  driver is still under development, so if your laptop is unsupported or
518	  something works not quite as expected, please use the mailing list
519	  available on the above page (acpi4asus-user@lists.sourceforge.net).
520
521	  NOTE: This driver is deprecated and will probably be removed soon,
522	  use asus-laptop instead.
523
524config TOPSTAR_LAPTOP
525	tristate "Topstar Laptop Extras"
526	depends on ACPI
527	depends on INPUT
528	select INPUT_SPARSEKMAP
529	---help---
530	  This driver adds support for hotkeys found on Topstar laptops.
531
532	  If you have a Topstar laptop, say Y or M here.
533
534config ACPI_TOSHIBA
535	tristate "Toshiba Laptop Extras"
536	depends on ACPI
537	select LEDS_CLASS
538	select NEW_LEDS
539	depends on BACKLIGHT_CLASS_DEVICE
540	depends on INPUT
541	depends on RFKILL || RFKILL = n
542	select INPUT_POLLDEV
543	select INPUT_SPARSEKMAP
544	---help---
545	  This driver adds support for access to certain system settings
546	  on "legacy free" Toshiba laptops.  These laptops can be recognized by
547	  their lack of a BIOS setup menu and APM support.
548
549	  On these machines, all system configuration is handled through the
550	  ACPI.  This driver is required for access to controls not covered
551	  by the general ACPI drivers, such as LCD brightness, video output,
552	  etc.
553
554	  This driver differs from the non-ACPI Toshiba laptop driver (located
555	  under "Processor type and features") in several aspects.
556	  Configuration is accessed by reading and writing text files in the
557	  /proc tree instead of by program interface to /dev.  Furthermore, no
558	  power management functions are exposed, as those are handled by the
559	  general ACPI drivers.
560
561	  More information about this driver is available at
562	  <http://memebeam.org/toys/ToshibaAcpiDriver>.
563
564	  If you have a legacy free Toshiba laptop (such as the Libretto L1
565	  series), say Y.
566
567config TOSHIBA_BT_RFKILL
568	tristate "Toshiba Bluetooth RFKill switch support"
569	depends on ACPI
570	---help---
571	  This driver adds support for Bluetooth events for the RFKill
572	  switch on modern Toshiba laptops with full ACPI support and
573	  an RFKill switch.
574
575	  This driver handles RFKill events for the TOS6205 Bluetooth,
576	  and re-enables it when the switch is set back to the 'on'
577	  position.
578
579	  If you have a modern Toshiba laptop with a Bluetooth and an
580	  RFKill switch (such as the Portege R500), say Y.
581
582config ACPI_CMPC
583	tristate "CMPC Laptop Extras"
584	depends on X86 && ACPI
585	depends on RFKILL || RFKILL=n
586	select INPUT
587	select BACKLIGHT_CLASS_DEVICE
588	default n
589	help
590	  Support for Intel Classmate PC ACPI devices, including some
591	  keys as input device, backlight device, tablet and accelerometer
592	  devices.
593
594config INTEL_SCU_IPC
595	bool "Intel SCU IPC Support"
596	depends on X86_MRST
597	default y
598	---help---
599	  IPC is used to bridge the communications between kernel and SCU on
600	  some embedded Intel x86 platforms. This is not needed for PC-type
601	  machines.
602
603config INTEL_SCU_IPC_UTIL
604	tristate "Intel SCU IPC utility driver"
605	depends on INTEL_SCU_IPC
606	default y
607	---help---
608	  The IPC Util driver provides an interface with the SCU enabling
609	  low level access for debug work and updating the firmware. Say
610	  N unless you will be doing this on an Intel MID platform.
611
612config GPIO_INTEL_PMIC
613	bool "Intel PMIC GPIO support"
614	depends on INTEL_SCU_IPC && GPIOLIB
615	---help---
616	  Say Y here to support GPIO via the SCU IPC interface
617	  on Intel MID platforms.
618
619config RAR_REGISTER
620	bool "Restricted Access Region Register Driver"
621	depends on PCI && X86_MRST
622	default n
623	---help---
624	  This driver allows other kernel drivers access to the
625	  contents of the restricted access region control registers.
626
627	  The restricted access region control registers
628	  (rar_registers) are used to pass address and
629	  locking information on restricted access regions
630	  to other drivers that use restricted access regions.
631
632	  The restricted access regions are regions of memory
633	  on the Intel MID Platform that are not accessible to
634	  the x86 processor, but are accessible to dedicated
635	  processors on board peripheral devices.
636
637	  The purpose of the restricted access regions is to
638	  protect sensitive data from compromise by unauthorized
639	  programs running on the x86 processor.
640
641config INTEL_IPS
642	tristate "Intel Intelligent Power Sharing"
643	depends on ACPI
644	---help---
645	  Intel Calpella platforms support dynamic power sharing between the
646	  CPU and GPU, maximizing performance in a given TDP.  This driver,
647	  along with the CPU frequency and i915 drivers, provides that
648	  functionality.  If in doubt, say Y here; it will only load on
649	  supported platforms.
650
651config IBM_RTL
652	tristate "Device driver to enable PRTL support"
653	depends on X86 && PCI
654	---help---
655	 Enable support for IBM Premium Real Time Mode (PRTM).
656	 This module will allow you the enter and exit PRTM in the BIOS via
657	 sysfs on platforms that support this feature.  System in PRTM will
658	 not receive CPU-generated SMIs for recoverable errors.  Use of this
659	 feature without proper support may void your hardware warranty.
660
661	 If the proper BIOS support is found the driver will load and create
662	 /sys/devices/system/ibm_rtl/.  The "state" variable will indicate
663	 whether or not the BIOS is in PRTM.
664	 state = 0 (BIOS SMIs on)
665	 state = 1 (BIOS SMIs off)
666
667config XO1_RFKILL
668	tristate "OLPC XO-1 software RF kill switch"
669	depends on OLPC
670	depends on RFKILL
671	---help---
672	  Support for enabling/disabling the WLAN interface on the OLPC XO-1
673	  laptop.
674
675endif # X86_PLATFORM_DEVICES
676