drivers/platform/x86/Kconfig

   1 #
   2 # X86 Platform Specific Drivers
   3 #
   4
   5 menuconfig 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
  16 if X86_PLATFORM_DEVICES
  17
  18 config 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
  40 config 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
  57 config 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
  79 config 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
  93 config 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
 104 config 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
 121 config 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
 131 config 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
 141 config 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
 159 config 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
 172 config 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
 192 config 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
 204 config 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
 223 config 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
 239 config 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
 245 config 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
 253 config 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
 281 config 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
 304 config 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
 315 config 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
 325 config 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
 349 config 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
 372 config 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
 392 config 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
 412 config 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
 422 config 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
 443 config 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
 459 config 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
 480 config 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
 492 config 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
 524 config 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
 534 config 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
 567 config 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
 582 config 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
 594 config 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
 603 config 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
 612 config 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
 619 config INTEL_MID_POWER_BUTTON
 620         tristate "power button driver for Intel MID platforms"
 621         depends on INTEL_SCU_IPC
 622         help
 623           This driver handles the power button on the Intel MID platforms.
 624
 625           If unsure, say N.
 626
 627 config RAR_REGISTER
 628         bool "Restricted Access Region Register Driver"
 629         depends on PCI && X86_MRST
 630         default n
 631         ---help---
 632           This driver allows other kernel drivers access to the
 633           contents of the restricted access region control registers.
 634
 635           The restricted access region control registers
 636           (rar_registers) are used to pass address and
 637           locking information on restricted access regions
 638           to other drivers that use restricted access regions.
 639
 640           The restricted access regions are regions of memory
 641           on the Intel MID Platform that are not accessible to
 642           the x86 processor, but are accessible to dedicated
 643           processors on board peripheral devices.
 644
 645           The purpose of the restricted access regions is to
 646           protect sensitive data from compromise by unauthorized
 647           programs running on the x86 processor.
 648
 649 config INTEL_IPS
 650         tristate "Intel Intelligent Power Sharing"
 651         depends on ACPI
 652         ---help---
 653           Intel Calpella platforms support dynamic power sharing between the
 654           CPU and GPU, maximizing performance in a given TDP.  This driver,
 655           along with the CPU frequency and i915 drivers, provides that
 656           functionality.  If in doubt, say Y here; it will only load on
 657           supported platforms.
 658
 659 config IBM_RTL
 660         tristate "Device driver to enable PRTL support"
 661         depends on X86 && PCI
 662         ---help---
 663          Enable support for IBM Premium Real Time Mode (PRTM).
 664          This module will allow you the enter and exit PRTM in the BIOS via
 665          sysfs on platforms that support this feature.  System in PRTM will
 666          not receive CPU-generated SMIs for recoverable errors.  Use of this
 667          feature without proper support may void your hardware warranty.
 668
 669          If the proper BIOS support is found the driver will load and create
 670          /sys/devices/system/ibm_rtl/.  The "state" variable will indicate
 671          whether or not the BIOS is in PRTM.
 672          state = 0 (BIOS SMIs on)
 673          state = 1 (BIOS SMIs off)
 674
 675 config XO1_RFKILL
 676         tristate "OLPC XO-1 software RF kill switch"
 677         depends on OLPC
 678         depends on RFKILL
 679         ---help---
 680           Support for enabling/disabling the WLAN interface on the OLPC XO-1
 681           laptop.
 682
 683 config XO15_EBOOK
 684         tristate "OLPC XO-1.5 ebook switch"
 685         depends on ACPI && INPUT
 686         ---help---
 687           Support for the ebook switch on the OLPC XO-1.5 laptop.
 688
 689           This switch is triggered as the screen is rotated and folded down to
 690           convert the device into ebook form.
 691
 692 endif # X86_PLATFORM_DEVICES