drivers/gpio/Kconfig

   1 #
   2 # GPIO infrastructure and drivers
   3 #
   4
   5 config ARCH_HAVE_CUSTOM_GPIO_H
   6         bool
   7         help
   8           Selecting this config option from the architecture Kconfig allows
   9           the architecture to provide a custom asm/gpio.h implementation
  10           overriding the default implementations.  New uses of this are
  11           strongly discouraged.
  12
  13 config ARCH_WANT_OPTIONAL_GPIOLIB
  14         bool
  15         help
  16           Select this config option from the architecture Kconfig, if
  17           it is possible to use gpiolib on the architecture, but let the
  18           user decide whether to actually build it or not.
  19           Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
  20           not depend on GPIOs being available, but rather let the user
  21           decide whether he needs it or not.
  22
  23 config ARCH_REQUIRE_GPIOLIB
  24         bool
  25         select GPIOLIB
  26         help
  27           Platforms select gpiolib if they use this infrastructure
  28           for all their GPIOs, usually starting with ones integrated
  29           into SOC processors.
  30           Selecting this from the architecture code will cause the gpiolib
  31           code to always get built in.
  32
  33
  34 menuconfig GPIOLIB
  35         bool "GPIO Support"
  36         depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
  37         help
  38           This enables GPIO support through the generic GPIO library.
  39           You only need to enable this, if you also want to enable
  40           one or more of the GPIO drivers below.
  41
  42           If unsure, say N.
  43
  44 if GPIOLIB
  45
  46 config GPIO_DEVRES
  47         def_bool y
  48         depends on HAS_IOMEM
  49
  50 config OF_GPIO
  51         def_bool y
  52         depends on OF
  53
  54 config GPIO_ACPI
  55         def_bool y
  56         depends on ACPI
  57
  58 config DEBUG_GPIO
  59         bool "Debug GPIO calls"
  60         depends on DEBUG_KERNEL
  61         help
  62           Say Y here to add some extra checks and diagnostics to GPIO calls.
  63           These checks help ensure that GPIOs have been properly initialized
  64           before they are used, and that sleeping calls are not made from
  65           non-sleeping contexts.  They can make bitbanged serial protocols
  66           slower.  The diagnostics help catch the type of setup errors
  67           that are most common when setting up new platforms or boards.
  68
  69 config GPIO_SYSFS
  70         bool "/sys/class/gpio/... (sysfs interface)"
  71         depends on SYSFS
  72         help
  73           Say Y here to add a sysfs interface for GPIOs.
  74
  75           This is mostly useful to work around omissions in a system's
  76           kernel support.  Those are common in custom and semicustom
  77           hardware assembled using standard kernels with a minimum of
  78           custom patches.  In those cases, userspace code may import
  79           a given GPIO from the kernel, if no kernel driver requested it.
  80
  81           Kernel drivers may also request that a particular GPIO be
  82           exported to userspace; this can be useful when debugging.
  83
  84 config GPIO_GENERIC
  85         tristate
  86
  87 # put drivers in the right section, in alphabetical order
  88
  89 config GPIO_DA9052
  90         tristate "Dialog DA9052 GPIO"
  91         depends on PMIC_DA9052
  92         help
  93           Say yes here to enable the GPIO driver for the DA9052 chip.
  94
  95 config GPIO_DA9055
  96         tristate "Dialog Semiconductor DA9055 GPIO"
  97         depends on MFD_DA9055
  98         help
  99           Say yes here to enable the GPIO driver for the DA9055 chip.
 100
 101           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
 102           be controller by this driver.
 103
 104           If driver is built as a module it will be called gpio-da9055.
 105
 106 config GPIO_MAX730X
 107         tristate
 108
 109 comment "Memory mapped GPIO drivers:"
 110
 111 config GPIO_CLPS711X
 112         tristate "CLPS711X GPIO support"
 113         depends on ARCH_CLPS711X
 114         select GPIO_GENERIC
 115         help
 116           Say yes here to support GPIO on CLPS711X SoCs.
 117
 118 config GPIO_GENERIC_PLATFORM
 119         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 120         select GPIO_GENERIC
 121         help
 122           Say yes here to support basic platform_device memory-mapped GPIO controllers.
 123
 124 config GPIO_IT8761E
 125         tristate "IT8761E GPIO support"
 126         depends on X86  # unconditional access to IO space.
 127         help
 128           Say yes here to support GPIO functionality of IT8761E super I/O chip.
 129
 130 config GPIO_EM
 131         tristate "Emma Mobile GPIO"
 132         depends on ARM && OF_GPIO
 133         help
 134           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 135
 136 config GPIO_EP93XX
 137         def_bool y
 138         depends on ARCH_EP93XX
 139         select GPIO_GENERIC
 140
 141 config GPIO_MM_LANTIQ
 142         bool "Lantiq Memory mapped GPIOs"
 143         depends on LANTIQ && SOC_XWAY
 144         help
 145           This enables support for memory mapped GPIOs on the External Bus Unit
 146           (EBU) found on Lantiq SoCs. The gpios are output only as they are
 147           created by attaching a 16bit latch to the bus.
 148
 149 config GPIO_F7188X
 150         tristate "F71882FG and F71889F GPIO support"
 151         depends on X86
 152         help
 153           This option enables support for GPIOs found on Fintek Super-I/O
 154           chips F71882FG and F71889F.
 155
 156           To compile this driver as a module, choose M here: the module will
 157           be called f7188x-gpio.
 158
 159 config GPIO_MOXART
 160         bool "MOXART GPIO support"
 161         depends on ARCH_MOXART
 162         help
 163           Select this option to enable GPIO driver for
 164           MOXA ART SoC devices.
 165
 166 config GPIO_MPC5200
 167         def_bool y
 168         depends on PPC_MPC52xx
 169
 170 config GPIO_MPC8XXX
 171         bool "MPC512x/MPC8xxx GPIO support"
 172         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 173                    FSL_SOC_BOOKE || PPC_86xx
 174         help
 175           Say Y here if you're going to use hardware that connects to the
 176           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 177
 178 config GPIO_MSM_V1
 179         tristate "Qualcomm MSM GPIO v1"
 180         depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
 181         help
 182           Say yes here to support the GPIO interface on ARM v6 based
 183           Qualcomm MSM chips.  Most of the pins on the MSM can be
 184           selected for GPIO, and are controlled by this driver.
 185
 186 config GPIO_MSM_V2
 187         tristate "Qualcomm MSM GPIO v2"
 188         depends on GPIOLIB && OF && ARCH_MSM
 189         help
 190           Say yes here to support the GPIO interface on ARM v7 based
 191           Qualcomm MSM chips.  Most of the pins on the MSM can be
 192           selected for GPIO, and are controlled by this driver.
 193
 194 config GPIO_MVEBU
 195         def_bool y
 196         depends on PLAT_ORION
 197         depends on OF
 198         select GPIO_GENERIC
 199         select GENERIC_IRQ_CHIP
 200
 201 config GPIO_MXC
 202         def_bool y
 203         depends on ARCH_MXC
 204         select GPIO_GENERIC
 205         select GENERIC_IRQ_CHIP
 206
 207 config GPIO_MXS
 208         def_bool y
 209         depends on ARCH_MXS
 210         select GPIO_GENERIC
 211         select GENERIC_IRQ_CHIP
 212
 213 config GPIO_OCTEON
 214         tristate "Cavium OCTEON GPIO"
 215         depends on GPIOLIB && CAVIUM_OCTEON_SOC
 216         default y
 217         help
 218           Say yes here to support the on-chip GPIO lines on the OCTEON
 219           family of SOCs.
 220
 221 config GPIO_PL061
 222         bool "PrimeCell PL061 GPIO support"
 223         depends on ARM_AMBA
 224         select GENERIC_IRQ_CHIP
 225         help
 226           Say yes here to support the PrimeCell PL061 GPIO device
 227
 228 config GPIO_PXA
 229         bool "PXA GPIO support"
 230         depends on ARCH_PXA || ARCH_MMP
 231         help
 232           Say yes here to support the PXA GPIO device
 233
 234 config GPIO_RCAR
 235         tristate "Renesas R-Car GPIO"
 236         depends on ARM
 237         help
 238           Say yes here to support GPIO on Renesas R-Car SoCs.
 239
 240 config GPIO_SAMSUNG
 241         bool
 242         depends on PLAT_SAMSUNG
 243         help
 244           Legacy GPIO support. Use only for platforms without support for
 245           pinctrl.
 246
 247 config GPIO_SCH311X
 248         tristate "SMSC SCH311x SuperI/O GPIO"
 249         help
 250           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
 251           SCH3116 "Super I/O" chipsets.
 252
 253           To compile this driver as a module, choose M here: the module will
 254           be called gpio-sch311x.
 255
 256 config GPIO_SPEAR_SPICS
 257         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 258         depends on PLAT_SPEAR
 259         select GENERIC_IRQ_CHIP
 260         help
 261           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
 262
 263 config GPIO_STA2X11
 264         bool "STA2x11/ConneXt GPIO support"
 265         depends on MFD_STA2X11
 266         select GENERIC_IRQ_CHIP
 267         help
 268           Say yes here to support the STA2x11/ConneXt GPIO device.
 269           The GPIO module has 128 GPIO pins with alternate functions.
 270
 271 config GPIO_TS5500
 272         tristate "TS-5500 DIO blocks and compatibles"
 273         help
 274           This driver supports Digital I/O exposed by pin blocks found on some
 275           Technologic Systems platforms. It includes, but is not limited to, 3
 276           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 277           LCD port.
 278
 279 config GPIO_TZ1090
 280         bool "Toumaz Xenif TZ1090 GPIO support"
 281         depends on SOC_TZ1090
 282         select GENERIC_IRQ_CHIP
 283         default y
 284         help
 285           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
 286
 287 config GPIO_TZ1090_PDC
 288         bool "Toumaz Xenif TZ1090 PDC GPIO support"
 289         depends on SOC_TZ1090
 290         default y
 291         help
 292           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
 293
 294 config GPIO_XILINX
 295         bool "Xilinx GPIO support"
 296         depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
 297         help
 298           Say yes here to support the Xilinx FPGA GPIO device
 299
 300 config GPIO_XTENSA
 301         bool "Xtensa GPIO32 support"
 302         depends on XTENSA
 303         depends on !SMP
 304         help
 305           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
 306           and EXPSTATE (output) ports
 307
 308 config GPIO_VR41XX
 309         tristate "NEC VR4100 series General-purpose I/O Uint support"
 310         depends on CPU_VR41XX
 311         help
 312           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 313
 314 config GPIO_SCH
 315         tristate "Intel SCH/TunnelCreek/Centerton GPIO"
 316         depends on PCI && X86
 317         select MFD_CORE
 318         select LPC_SCH
 319         help
 320           Say yes here to support GPIO interface on Intel Poulsbo SCH,
 321           Intel Tunnel Creek processor or Intel Centerton processor.
 322           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 323           powered by the core power rail and are turned off during sleep
 324           modes (S3 and higher). The remaining four GPIOs are powered by
 325           the Intel SCH suspend power supply. These GPIOs remain
 326           active during S3. The suspend powered GPIOs can be used to wake the
 327           system from the Suspend-to-RAM state.
 328           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 329           core power rail and 9 from suspend power supply.
 330           The Intel Centerton processor has a total of 30 GPIO pins.
 331           Twenty-one are powered by the core power rail and 9 from the
 332           suspend power supply.
 333
 334 config GPIO_ICH
 335         tristate "Intel ICH GPIO"
 336         depends on PCI && X86
 337         select MFD_CORE
 338         select LPC_ICH
 339         help
 340           Say yes here to support the GPIO functionality of a number of Intel
 341           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 342           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
 343           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 344
 345           If unsure, say N.
 346
 347 config GPIO_IOP
 348         tristate "Intel IOP GPIO"
 349         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
 350         help
 351           Say yes here to support the GPIO functionality of a number of Intel
 352           IOP32X or IOP33X.
 353
 354           If unsure, say N.
 355
 356 config GPIO_VX855
 357         tristate "VIA VX855/VX875 GPIO"
 358         depends on PCI
 359         select MFD_CORE
 360         select MFD_VX855
 361         help
 362           Support access to the VX855/VX875 GPIO lines through the gpio library.
 363
 364           This driver provides common support for accessing the device,
 365           additional drivers must be enabled in order to use the
 366           functionality of the device.
 367
 368 config GPIO_GE_FPGA
 369         bool "GE FPGA based GPIO"
 370         depends on GE_FPGA
 371         help
 372           Support for common GPIO functionality provided on some GE Single Board
 373           Computers.
 374
 375           This driver provides basic support (configure as input or output, read
 376           and write pin state) for GPIO implemented in a number of GE single
 377           board computers.
 378
 379 config GPIO_LYNXPOINT
 380         tristate "Intel Lynxpoint GPIO support"
 381         depends on ACPI && X86
 382         select IRQ_DOMAIN
 383         help
 384           driver for GPIO functionality on Intel Lynxpoint PCH chipset
 385           Requires ACPI device enumeration code to set up a platform device.
 386
 387 config GPIO_GRGPIO
 388         tristate "Aeroflex Gaisler GRGPIO support"
 389         depends on OF
 390         select GPIO_GENERIC
 391         select IRQ_DOMAIN
 392         help
 393           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
 394           VHDL IP core library.
 395
 396 config GPIO_TB10X
 397         bool
 398         select OF_GPIO
 399
 400 comment "I2C GPIO expanders:"
 401
 402 config GPIO_ARIZONA
 403         tristate "Wolfson Microelectronics Arizona class devices"
 404         depends on MFD_ARIZONA
 405         help
 406           Support for GPIOs on Wolfson Arizona class devices.
 407
 408 config GPIO_MAX7300
 409         tristate "Maxim MAX7300 GPIO expander"
 410         depends on I2C
 411         select GPIO_MAX730X
 412         help
 413           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
 414
 415 config GPIO_MAX732X
 416         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 417         depends on I2C
 418         help
 419           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 420           Port Expanders. Each IO port on these chips has a fixed role of
 421           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 422           Input and Output (designed by 'P'). The combinations are listed
 423           below:
 424
 425           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 426                         max7322 (4I4O), max7323 (4P4O)
 427
 428           16 bits:      max7324 (8I8O), max7325 (8P8O),
 429                         max7326 (4I12O), max7327 (4P12O)
 430
 431           Board setup code must specify the model to use, and the start
 432           number for these GPIOs.
 433
 434 config GPIO_MAX732X_IRQ
 435         bool "Interrupt controller support for MAX732x"
 436         depends on GPIO_MAX732X=y
 437         help
 438           Say yes here to enable the max732x to be used as an interrupt
 439           controller. It requires the driver to be built in the kernel.
 440
 441 config GPIO_MC9S08DZ60
 442         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 443         depends on I2C=y && MACH_MX35_3DS
 444         help
 445           Select this to enable the MC9S08DZ60 GPIO driver
 446
 447 config GPIO_PCA953X
 448         tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
 449         depends on I2C
 450         help
 451           Say yes here to provide access to several register-oriented
 452           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 453           models include:
 454
 455           4 bits:       pca9536, pca9537
 456
 457           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
 458                         pca9556, pca9557, pca9574, tca6408
 459
 460           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
 461                         tca6416
 462
 463 config GPIO_PCA953X_IRQ
 464         bool "Interrupt controller support for PCA953x"
 465         depends on GPIO_PCA953X=y
 466         help
 467           Say yes here to enable the pca953x to be used as an interrupt
 468           controller. It requires the driver to be built in the kernel.
 469
 470 config GPIO_PCF857X
 471         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 472         depends on I2C
 473         select IRQ_DOMAIN
 474         help
 475           Say yes here to provide access to most "quasi-bidirectional" I2C
 476           GPIO expanders used for additional digital outputs or inputs.
 477           Most of these parts are from NXP, though TI is a second source for
 478           some of them.  Compatible models include:
 479
 480           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 481                     pca9670, pca9672, pca9674, pca9674a,
 482                     max7328, max7329
 483
 484           16 bits:  pcf8575, pcf8575c, pca8575,
 485                     pca9671, pca9673, pca9675
 486
 487           Your board setup code will need to declare the expanders in
 488           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 489           can then be used from drivers and other kernel code, just like
 490           other GPIOs, but only accessible from task contexts.
 491
 492           This driver provides an in-kernel interface to those GPIOs using
 493           platform-neutral GPIO calls.
 494
 495 config GPIO_RC5T583
 496         bool "RICOH RC5T583 GPIO"
 497         depends on MFD_RC5T583
 498         help
 499           Select this option to enable GPIO driver for the Ricoh RC5T583
 500           chip family.
 501           This driver provides the support for driving/reading the gpio pins
 502           of RC5T583 device through standard gpio library.
 503
 504 config GPIO_SX150X
 505         bool "Semtech SX150x I2C GPIO expander"
 506         depends on I2C=y
 507         default n
 508         help
 509           Say yes here to provide support for Semtech SX150-series I2C
 510           GPIO expanders. Compatible models include:
 511
 512           8 bits:  sx1508q
 513           16 bits: sx1509q
 514
 515 config GPIO_STMPE
 516         bool "STMPE GPIOs"
 517         depends on MFD_STMPE
 518         help
 519           This enables support for the GPIOs found on the STMPE I/O
 520           Expanders.
 521
 522 config GPIO_STP_XWAY
 523         bool "XWAY STP GPIOs"
 524         depends on SOC_XWAY
 525         help
 526           This enables support for the Serial To Parallel (STP) unit found on
 527           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 528           that can be up to 24 bit. This peripheral is aimed at driving leds.
 529           Some of the gpios/leds can be auto updated by the soc with dsl and
 530           phy status.
 531
 532 config GPIO_TC3589X
 533         bool "TC3589X GPIOs"
 534         depends on MFD_TC3589X
 535         help
 536           This enables support for the GPIOs found on the TC3589X
 537           I/O Expander.
 538
 539 config GPIO_TPS65912
 540         tristate "TI TPS65912 GPIO"
 541         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 542         help
 543           This driver supports TPS65912 gpio chip
 544
 545 config GPIO_TWL4030
 546         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 547         depends on TWL4030_CORE
 548         help
 549           Say yes here to access the GPIO signals of various multi-function
 550           power management chips from Texas Instruments.
 551
 552 config GPIO_TWL6040
 553         tristate "TWL6040 GPO"
 554         depends on TWL6040_CORE
 555         help
 556           Say yes here to access the GPO signals of twl6040
 557           audio chip from Texas Instruments.
 558
 559 config GPIO_WM831X
 560         tristate "WM831x GPIOs"
 561         depends on MFD_WM831X
 562         help
 563           Say yes here to access the GPIO signals of WM831x power management
 564           chips from Wolfson Microelectronics.
 565
 566 config GPIO_WM8350
 567         tristate "WM8350 GPIOs"
 568         depends on MFD_WM8350
 569         help
 570           Say yes here to access the GPIO signals of WM8350 power management
 571           chips from Wolfson Microelectronics.
 572
 573 config GPIO_WM8994
 574         tristate "WM8994 GPIOs"
 575         depends on MFD_WM8994
 576         help
 577           Say yes here to access the GPIO signals of WM8994 audio hub
 578           CODECs from Wolfson Microelectronics.
 579
 580 config GPIO_ADP5520
 581         tristate "GPIO Support for ADP5520 PMIC"
 582         depends on PMIC_ADP5520
 583         help
 584           This option enables support for on-chip GPIO found
 585           on Analog Devices ADP5520 PMICs.
 586
 587 config GPIO_ADP5588
 588         tristate "ADP5588 I2C GPIO expander"
 589         depends on I2C
 590         help
 591           This option enables support for 18 GPIOs found
 592           on Analog Devices ADP5588 GPIO Expanders.
 593
 594 config GPIO_ADP5588_IRQ
 595         bool "Interrupt controller support for ADP5588"
 596         depends on GPIO_ADP5588=y
 597         help
 598           Say yes here to enable the adp5588 to be used as an interrupt
 599           controller. It requires the driver to be built in the kernel.
 600
 601 config GPIO_ADNP
 602         tristate "Avionic Design N-bit GPIO expander"
 603         depends on I2C && OF_GPIO
 604         help
 605           This option enables support for N GPIOs found on Avionic Design
 606           I2C GPIO expanders. The register space will be extended by powers
 607           of two, so the controller will need to accommodate for that. For
 608           example: if a controller provides 48 pins, 6 registers will be
 609           enough to represent all pins, but the driver will assume a
 610           register layout for 64 pins (8 registers).
 611
 612 comment "PCI GPIO expanders:"
 613
 614 config GPIO_CS5535
 615         tristate "AMD CS5535/CS5536 GPIO support"
 616         depends on PCI && X86 && MFD_CS5535
 617         help
 618           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 619           can be used for quite a number of things.  The CS5535/6 is found on
 620           AMD Geode and Lemote Yeeloong devices.
 621
 622           If unsure, say N.
 623
 624 config GPIO_BT8XX
 625         tristate "BT8XX GPIO abuser"
 626         depends on PCI && VIDEO_BT848=n
 627         help
 628           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 629           as a cheap PCI GPIO card.
 630
 631           This chip can be found on Miro, Hauppauge and STB TV-cards.
 632
 633           The card needs to be physically altered for using it as a
 634           GPIO card. For more information on how to build a GPIO card
 635           from a BT8xx TV card, see the documentation file at
 636           Documentation/bt8xxgpio.txt
 637
 638           If unsure, say N.
 639
 640 config GPIO_AMD8111
 641         tristate "AMD 8111 GPIO driver"
 642         depends on PCI
 643         help
 644           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
 645
 646           Note, that usually system firmware/ACPI handles GPIO pins on their
 647           own and users might easily break their systems with uncarefull usage
 648           of this driver!
 649
 650           If unsure, say N
 651
 652 config GPIO_INTEL_MID
 653         bool "Intel Mid GPIO support"
 654         depends on PCI && X86
 655         select IRQ_DOMAIN
 656         help
 657           Say Y here to support Intel Mid GPIO.
 658
 659 config GPIO_PCH
 660         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 661         depends on PCI && X86
 662         select GENERIC_IRQ_CHIP
 663         help
 664           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 665           which is an IOH(Input/Output Hub) for x86 embedded processor.
 666           This driver can access PCH GPIO device.
 667
 668           This driver also can be used for LAPIS Semiconductor IOH(Input/
 669           Output Hub), ML7223 and ML7831.
 670           ML7223 IOH is for MP(Media Phone) use.
 671           ML7831 IOH is for general purpose use.
 672           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 673           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 674
 675 config GPIO_ML_IOH
 676         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 677         depends on PCI
 678         select GENERIC_IRQ_CHIP
 679         help
 680           ML7213 is companion chip for Intel Atom E6xx series.
 681           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 682           Hub) which is for IVI(In-Vehicle Infotainment) use.
 683           This driver can access the IOH's GPIO device.
 684
 685 config GPIO_SODAVILLE
 686         bool "Intel Sodaville GPIO support"
 687         depends on X86 && PCI && OF
 688         select GPIO_GENERIC
 689         select GENERIC_IRQ_CHIP
 690         help
 691           Say Y here to support Intel Sodaville GPIO.
 692
 693 config GPIO_TIMBERDALE
 694         bool "Support for timberdale GPIO IP"
 695         depends on MFD_TIMBERDALE && HAS_IOMEM
 696         ---help---
 697         Add support for the GPIO IP in the timberdale FPGA.
 698
 699 config GPIO_RDC321X
 700         tristate "RDC R-321x GPIO support"
 701         depends on PCI
 702         select MFD_CORE
 703         select MFD_RDC321X
 704         help
 705           Support for the RDC R321x SoC GPIOs over southbridge
 706           PCI configuration space.
 707
 708 comment "SPI GPIO expanders:"
 709
 710 config GPIO_MAX7301
 711         tristate "Maxim MAX7301 GPIO expander"
 712         depends on SPI_MASTER
 713         select GPIO_MAX730X
 714         help
 715           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 716
 717 config GPIO_MCP23S08
 718         tristate "Microchip MCP23xxx I/O expander"
 719         depends on (SPI_MASTER && !I2C) || I2C
 720         help
 721           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 722           I/O expanders.
 723           This provides a GPIO interface supporting inputs and outputs.
 724
 725 config GPIO_MC33880
 726         tristate "Freescale MC33880 high-side/low-side switch"
 727         depends on SPI_MASTER
 728         help
 729           SPI driver for Freescale MC33880 high-side/low-side switch.
 730           This provides GPIO interface supporting inputs and outputs.
 731
 732 config GPIO_74X164
 733         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 734         depends on SPI_MASTER && OF
 735         help
 736           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
 737           shift registers. This driver can be used to provide access
 738           to more gpio outputs.
 739
 740 comment "AC97 GPIO expanders:"
 741
 742 config GPIO_UCB1400
 743         tristate "Philips UCB1400 GPIO"
 744         depends on UCB1400_CORE
 745         help
 746           This enables support for the Philips UCB1400 GPIO pins.
 747           The UCB1400 is an AC97 audio codec.
 748
 749 comment "LPC GPIO expanders:"
 750
 751 config GPIO_KEMPLD
 752         tristate "Kontron ETX / COMexpress GPIO"
 753         depends on MFD_KEMPLD
 754         help
 755           This enables support for the PLD GPIO interface on some Kontron ETX
 756           and COMexpress (ETXexpress) modules.
 757
 758           This driver can also be built as a module. If so, the module will be
 759           called gpio-kempld.
 760
 761 comment "MODULbus GPIO expanders:"
 762
 763 config GPIO_JANZ_TTL
 764         tristate "Janz VMOD-TTL Digital IO Module"
 765         depends on MFD_JANZ_CMODIO
 766         help
 767           This enables support for the Janz VMOD-TTL Digital IO module.
 768           This driver provides support for driving the pins in output
 769           mode only. Input mode is not supported.
 770
 771 config GPIO_PALMAS
 772         bool "TI PALMAS series PMICs GPIO"
 773         depends on MFD_PALMAS
 774         help
 775           Select this option to enable GPIO driver for the TI PALMAS
 776           series chip family.
 777
 778 config GPIO_TPS6586X
 779         bool "TPS6586X GPIO"
 780         depends on MFD_TPS6586X
 781         help
 782           Select this option to enable GPIO driver for the TPS6586X
 783           chip family.
 784
 785 config GPIO_TPS65910
 786         bool "TPS65910 GPIO"
 787         depends on MFD_TPS65910
 788         help
 789           Select this option to enable GPIO driver for the TPS65910
 790           chip family.
 791
 792 config GPIO_MSIC
 793         bool "Intel MSIC mixed signal gpio support"
 794         depends on MFD_INTEL_MSIC
 795         help
 796           Enable support for GPIO on intel MSIC controllers found in
 797           intel MID devices
 798
 799 config GPIO_BCM_KONA
 800         bool "Broadcom Kona GPIO"
 801         depends on OF_GPIO
 802         help
 803           Turn on GPIO support for Broadcom "Kona" chips.
 804
 805 comment "USB GPIO expanders:"
 806
 807 config GPIO_VIPERBOARD
 808         tristate "Viperboard GPIO a & b support"
 809         depends on MFD_VIPERBOARD && USB
 810         help
 811           Say yes here to access the GPIO signals of Nano River
 812           Technologies Viperboard. There are two GPIO chips on the
 813           board: gpioa and gpiob.
 814           See viperboard API specification and Nano
 815           River Tech's viperboard.h for detailed meaning
 816           of the module parameters.
 817
 818 endif