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
  35 menuconfig GPIOLIB
  36         bool "GPIO Support"
  37         depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
  38         select GENERIC_GPIO
  39         help
  40           This enables GPIO support through the generic GPIO library.
  41           You only need to enable this, if you also want to enable
  42           one or more of the GPIO drivers below.
  43
  44           If unsure, say N.
  45
  46 if GPIOLIB
  47
  48 config OF_GPIO
  49         def_bool y
  50         depends on OF
  51
  52 config GPIO_ACPI
  53         def_bool y
  54         depends on ACPI
  55
  56 config DEBUG_GPIO
  57         bool "Debug GPIO calls"
  58         depends on DEBUG_KERNEL
  59         help
  60           Say Y here to add some extra checks and diagnostics to GPIO calls.
  61           These checks help ensure that GPIOs have been properly initialized
  62           before they are used, and that sleeping calls are not made from
  63           non-sleeping contexts.  They can make bitbanged serial protocols
  64           slower.  The diagnostics help catch the type of setup errors
  65           that are most common when setting up new platforms or boards.
  66
  67 config GPIO_SYSFS
  68         bool "/sys/class/gpio/... (sysfs interface)"
  69         depends on SYSFS
  70         help
  71           Say Y here to add a sysfs interface for GPIOs.
  72
  73           This is mostly useful to work around omissions in a system's
  74           kernel support.  Those are common in custom and semicustom
  75           hardware assembled using standard kernels with a minimum of
  76           custom patches.  In those cases, userspace code may import
  77           a given GPIO from the kernel, if no kernel driver requested it.
  78
  79           Kernel drivers may also request that a particular GPIO be
  80           exported to userspace; this can be useful when debugging.
  81
  82 config GPIO_GENERIC
  83         tristate
  84
  85 # put drivers in the right section, in alphabetical order
  86
  87 config GPIO_DA9052
  88         tristate "Dialog DA9052 GPIO"
  89         depends on PMIC_DA9052
  90         help
  91           Say yes here to enable the GPIO driver for the DA9052 chip.
  92
  93 config GPIO_DA9055
  94         tristate "Dialog Semiconductor DA9055 GPIO"
  95         depends on MFD_DA9055
  96         help
  97           Say yes here to enable the GPIO driver for the DA9055 chip.
  98
  99           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
 100           be controller by this driver.
 101
 102           If driver is built as a module it will be called gpio-da9055.
 103
 104 config GPIO_MAX730X
 105         tristate
 106
 107 comment "Memory mapped GPIO drivers:"
 108
 109 config GPIO_CLPS711X
 110         def_bool y
 111         depends on ARCH_CLPS711X
 112
 113 config GPIO_GENERIC_PLATFORM
 114         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 115         select GPIO_GENERIC
 116         help
 117           Say yes here to support basic platform_device memory-mapped GPIO controllers.
 118
 119 config GPIO_IT8761E
 120         tristate "IT8761E GPIO support"
 121         depends on X86  # unconditional access to IO space.
 122         help
 123           Say yes here to support GPIO functionality of IT8761E super I/O chip.
 124
 125 config GPIO_EM
 126         tristate "Emma Mobile GPIO"
 127         depends on ARM
 128         help
 129           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 130
 131 config GPIO_EP93XX
 132         def_bool y
 133         depends on ARCH_EP93XX
 134         select GPIO_GENERIC
 135
 136 config GPIO_MM_LANTIQ
 137         bool "Lantiq Memory mapped GPIOs"
 138         depends on LANTIQ && SOC_XWAY
 139         help
 140           This enables support for memory mapped GPIOs on the External Bus Unit
 141           (EBU) found on Lantiq SoCs. The gpios are output only as they are
 142           created by attaching a 16bit latch to the bus.
 143
 144 config GPIO_MPC5200
 145         def_bool y
 146         depends on PPC_MPC52xx
 147
 148 config GPIO_MPC8XXX
 149         bool "MPC512x/MPC8xxx GPIO support"
 150         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 151                    FSL_SOC_BOOKE || PPC_86xx
 152         help
 153           Say Y here if you're going to use hardware that connects to the
 154           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 155
 156 config GPIO_MSM_V1
 157         tristate "Qualcomm MSM GPIO v1"
 158         depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
 159         help
 160           Say yes here to support the GPIO interface on ARM v6 based
 161           Qualcomm MSM chips.  Most of the pins on the MSM can be
 162           selected for GPIO, and are controlled by this driver.
 163
 164 config GPIO_MSM_V2
 165         tristate "Qualcomm MSM GPIO v2"
 166         depends on GPIOLIB && ARCH_MSM
 167         help
 168           Say yes here to support the GPIO interface on ARM v7 based
 169           Qualcomm MSM chips.  Most of the pins on the MSM can be
 170           selected for GPIO, and are controlled by this driver.
 171
 172 config GPIO_MVEBU
 173         def_bool y
 174         depends on PLAT_ORION
 175         depends on OF
 176         select GPIO_GENERIC
 177         select GENERIC_IRQ_CHIP
 178
 179 config GPIO_MXC
 180         def_bool y
 181         depends on ARCH_MXC
 182         select GPIO_GENERIC
 183         select GENERIC_IRQ_CHIP
 184
 185 config GPIO_MXS
 186         def_bool y
 187         depends on ARCH_MXS
 188         select GPIO_GENERIC
 189         select GENERIC_IRQ_CHIP
 190
 191 config GPIO_PL061
 192         bool "PrimeCell PL061 GPIO support"
 193         depends on ARM && ARM_AMBA
 194         select GENERIC_IRQ_CHIP
 195         help
 196           Say yes here to support the PrimeCell PL061 GPIO device
 197
 198 config GPIO_PXA
 199         bool "PXA GPIO support"
 200         depends on ARCH_PXA || ARCH_MMP
 201         help
 202           Say yes here to support the PXA GPIO device
 203
 204 config GPIO_SPEAR_SPICS
 205         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 206         depends on PLAT_SPEAR
 207         select GENERIC_IRQ_CHIP
 208         help
 209           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
 210
 211 config GPIO_STA2X11
 212         bool "STA2x11/ConneXt GPIO support"
 213         depends on MFD_STA2X11
 214         select GENERIC_IRQ_CHIP
 215         help
 216           Say yes here to support the STA2x11/ConneXt GPIO device.
 217           The GPIO module has 128 GPIO pins with alternate functions.
 218
 219 config GPIO_TS5500
 220         tristate "TS-5500 DIO blocks and compatibles"
 221         help
 222           This driver supports Digital I/O exposed by pin blocks found on some
 223           Technologic Systems platforms. It includes, but is not limited to, 3
 224           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 225           LCD port.
 226
 227 config GPIO_VT8500
 228         bool "VIA/Wondermedia SoC GPIO Support"
 229         depends on ARCH_VT8500
 230         help
 231           Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
 232
 233 config GPIO_XILINX
 234         bool "Xilinx GPIO support"
 235         depends on PPC_OF || MICROBLAZE
 236         help
 237           Say yes here to support the Xilinx FPGA GPIO device
 238
 239 config GPIO_VR41XX
 240         tristate "NEC VR4100 series General-purpose I/O Uint support"
 241         depends on CPU_VR41XX
 242         help
 243           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 244
 245 config GPIO_SCH
 246         tristate "Intel SCH/TunnelCreek/Centerton GPIO"
 247         depends on PCI && X86
 248         select MFD_CORE
 249         select LPC_SCH
 250         help
 251           Say yes here to support GPIO interface on Intel Poulsbo SCH,
 252           Intel Tunnel Creek processor or Intel Centerton processor.
 253           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 254           powered by the core power rail and are turned off during sleep
 255           modes (S3 and higher). The remaining four GPIOs are powered by
 256           the Intel SCH suspend power supply. These GPIOs remain
 257           active during S3. The suspend powered GPIOs can be used to wake the
 258           system from the Suspend-to-RAM state.
 259           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 260           core power rail and 9 from suspend power supply.
 261           The Intel Centerton processor has a total of 30 GPIO pins.
 262           Twenty-one are powered by the core power rail and 9 from the
 263           suspend power supply.
 264
 265 config GPIO_ICH
 266         tristate "Intel ICH GPIO"
 267         depends on PCI && X86
 268         select MFD_CORE
 269         select LPC_ICH
 270         help
 271           Say yes here to support the GPIO functionality of a number of Intel
 272           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 273           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
 274           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 275
 276           If unsure, say N.
 277
 278 config GPIO_VX855
 279         tristate "VIA VX855/VX875 GPIO"
 280         depends on PCI && GENERIC_HARDIRQS
 281         select MFD_CORE
 282         select MFD_VX855
 283         help
 284           Support access to the VX855/VX875 GPIO lines through the gpio library.
 285
 286           This driver provides common support for accessing the device,
 287           additional drivers must be enabled in order to use the
 288           functionality of the device.
 289
 290 config GPIO_GE_FPGA
 291         bool "GE FPGA based GPIO"
 292         depends on GE_FPGA
 293         help
 294           Support for common GPIO functionality provided on some GE Single Board
 295           Computers.
 296
 297           This driver provides basic support (configure as input or output, read
 298           and write pin state) for GPIO implemented in a number of GE single
 299           board computers.
 300
 301 comment "I2C GPIO expanders:"
 302
 303 config GPIO_ARIZONA
 304         tristate "Wolfson Microelectronics Arizona class devices"
 305         depends on MFD_ARIZONA
 306         help
 307           Support for GPIOs on Wolfson Arizona class devices.
 308
 309 config GPIO_MAX7300
 310         tristate "Maxim MAX7300 GPIO expander"
 311         depends on I2C
 312         select GPIO_MAX730X
 313         help
 314           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 315
 316 config GPIO_MAX732X
 317         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 318         depends on I2C
 319         help
 320           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 321           Port Expanders. Each IO port on these chips has a fixed role of
 322           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 323           Input and Output (designed by 'P'). The combinations are listed
 324           below:
 325
 326           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 327                         max7322 (4I4O), max7323 (4P4O)
 328
 329           16 bits:      max7324 (8I8O), max7325 (8P8O),
 330                         max7326 (4I12O), max7327 (4P12O)
 331
 332           Board setup code must specify the model to use, and the start
 333           number for these GPIOs.
 334
 335 config GPIO_MAX732X_IRQ
 336         bool "Interrupt controller support for MAX732x"
 337         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 338         help
 339           Say yes here to enable the max732x to be used as an interrupt
 340           controller. It requires the driver to be built in the kernel.
 341
 342 config GPIO_MC9S08DZ60
 343         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 344         depends on I2C=y && MACH_MX35_3DS
 345         help
 346           Select this to enable the MC9S08DZ60 GPIO driver
 347
 348 config GPIO_PCA953X
 349         tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
 350         depends on I2C
 351         help
 352           Say yes here to provide access to several register-oriented
 353           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 354           models include:
 355
 356           4 bits:       pca9536, pca9537
 357
 358           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
 359                         pca9556, pca9557, pca9574, tca6408
 360
 361           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
 362                         tca6416
 363
 364 config GPIO_PCA953X_IRQ
 365         bool "Interrupt controller support for PCA953x"
 366         depends on GPIO_PCA953X=y
 367         help
 368           Say yes here to enable the pca953x to be used as an interrupt
 369           controller. It requires the driver to be built in the kernel.
 370
 371 config GPIO_PCF857X
 372         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 373         depends on I2C
 374         select IRQ_DOMAIN
 375         help
 376           Say yes here to provide access to most "quasi-bidirectional" I2C
 377           GPIO expanders used for additional digital outputs or inputs.
 378           Most of these parts are from NXP, though TI is a second source for
 379           some of them.  Compatible models include:
 380
 381           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 382                     pca9670, pca9672, pca9674, pca9674a,
 383                     max7328, max7329
 384
 385           16 bits:  pcf8575, pcf8575c, pca8575,
 386                     pca9671, pca9673, pca9675
 387
 388           Your board setup code will need to declare the expanders in
 389           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 390           can then be used from drivers and other kernel code, just like
 391           other GPIOs, but only accessible from task contexts.
 392
 393           This driver provides an in-kernel interface to those GPIOs using
 394           platform-neutral GPIO calls.
 395
 396 config GPIO_RC5T583
 397         bool "RICOH RC5T583 GPIO"
 398         depends on MFD_RC5T583
 399         help
 400           Select this option to enable GPIO driver for the Ricoh RC5T583
 401           chip family.
 402           This driver provides the support for driving/reading the gpio pins
 403           of RC5T583 device through standard gpio library.
 404
 405 config GPIO_SX150X
 406         bool "Semtech SX150x I2C GPIO expander"
 407         depends on I2C=y
 408         default n
 409         help
 410           Say yes here to provide support for Semtech SX150-series I2C
 411           GPIO expanders. Compatible models include:
 412
 413           8 bits:  sx1508q
 414           16 bits: sx1509q
 415
 416 config GPIO_STMPE
 417         bool "STMPE GPIOs"
 418         depends on MFD_STMPE
 419         help
 420           This enables support for the GPIOs found on the STMPE I/O
 421           Expanders.
 422
 423 config GPIO_STP_XWAY
 424         bool "XWAY STP GPIOs"
 425         depends on SOC_XWAY
 426         help
 427           This enables support for the Serial To Parallel (STP) unit found on
 428           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 429           that can be up to 24 bit. This peripheral is aimed at driving leds.
 430           Some of the gpios/leds can be auto updated by the soc with dsl and
 431           phy status.
 432
 433 config GPIO_TC3589X
 434         bool "TC3589X GPIOs"
 435         depends on MFD_TC3589X
 436         help
 437           This enables support for the GPIOs found on the TC3589X
 438           I/O Expander.
 439
 440 config GPIO_TPS65912
 441         tristate "TI TPS65912 GPIO"
 442         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 443         help
 444           This driver supports TPS65912 gpio chip
 445
 446 config GPIO_TWL4030
 447         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 448         depends on TWL4030_CORE
 449         help
 450           Say yes here to access the GPIO signals of various multi-function
 451           power management chips from Texas Instruments.
 452
 453 config GPIO_TWL6040
 454         tristate "TWL6040 GPO"
 455         depends on TWL6040_CORE
 456         help
 457           Say yes here to access the GPO signals of twl6040
 458           audio chip from Texas Instruments.
 459
 460 config GPIO_WM831X
 461         tristate "WM831x GPIOs"
 462         depends on MFD_WM831X
 463         help
 464           Say yes here to access the GPIO signals of WM831x power management
 465           chips from Wolfson Microelectronics.
 466
 467 config GPIO_WM8350
 468         tristate "WM8350 GPIOs"
 469         depends on MFD_WM8350
 470         help
 471           Say yes here to access the GPIO signals of WM8350 power management
 472           chips from Wolfson Microelectronics.
 473
 474 config GPIO_WM8994
 475         tristate "WM8994 GPIOs"
 476         depends on MFD_WM8994
 477         help
 478           Say yes here to access the GPIO signals of WM8994 audio hub
 479           CODECs from Wolfson Microelectronics.
 480
 481 config GPIO_ADP5520
 482         tristate "GPIO Support for ADP5520 PMIC"
 483         depends on PMIC_ADP5520
 484         help
 485           This option enables support for on-chip GPIO found
 486           on Analog Devices ADP5520 PMICs.
 487
 488 config GPIO_ADP5588
 489         tristate "ADP5588 I2C GPIO expander"
 490         depends on I2C
 491         help
 492           This option enables support for 18 GPIOs found
 493           on Analog Devices ADP5588 GPIO Expanders.
 494
 495 config GPIO_ADP5588_IRQ
 496         bool "Interrupt controller support for ADP5588"
 497         depends on GPIO_ADP5588=y
 498         help
 499           Say yes here to enable the adp5588 to be used as an interrupt
 500           controller. It requires the driver to be built in the kernel.
 501
 502 config GPIO_ADNP
 503         tristate "Avionic Design N-bit GPIO expander"
 504         depends on I2C && OF_GPIO
 505         help
 506           This option enables support for N GPIOs found on Avionic Design
 507           I2C GPIO expanders. The register space will be extended by powers
 508           of two, so the controller will need to accommodate for that. For
 509           example: if a controller provides 48 pins, 6 registers will be
 510           enough to represent all pins, but the driver will assume a
 511           register layout for 64 pins (8 registers).
 512
 513 comment "PCI GPIO expanders:"
 514
 515 config GPIO_CS5535
 516         tristate "AMD CS5535/CS5536 GPIO support"
 517         depends on PCI && X86 && MFD_CS5535
 518         help
 519           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 520           can be used for quite a number of things.  The CS5535/6 is found on
 521           AMD Geode and Lemote Yeeloong devices.
 522
 523           If unsure, say N.
 524
 525 config GPIO_BT8XX
 526         tristate "BT8XX GPIO abuser"
 527         depends on PCI && VIDEO_BT848=n
 528         help
 529           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 530           as a cheap PCI GPIO card.
 531
 532           This chip can be found on Miro, Hauppauge and STB TV-cards.
 533
 534           The card needs to be physically altered for using it as a
 535           GPIO card. For more information on how to build a GPIO card
 536           from a BT8xx TV card, see the documentation file at
 537           Documentation/bt8xxgpio.txt
 538
 539           If unsure, say N.
 540
 541 config GPIO_AMD8111
 542         tristate "AMD 8111 GPIO driver"
 543         depends on PCI
 544         help
 545           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
 546
 547           Note, that usually system firmware/ACPI handles GPIO pins on their
 548           own and users might easily break their systems with uncarefull usage
 549           of this driver!
 550
 551           If unsure, say N
 552
 553 config GPIO_LANGWELL
 554         bool "Intel Langwell/Penwell GPIO support"
 555         depends on PCI && X86
 556         select IRQ_DOMAIN
 557         help
 558           Say Y here to support Intel Langwell/Penwell GPIO.
 559
 560 config GPIO_PCH
 561         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 562         depends on PCI && X86
 563         select GENERIC_IRQ_CHIP
 564         help
 565           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 566           which is an IOH(Input/Output Hub) for x86 embedded processor.
 567           This driver can access PCH GPIO device.
 568
 569           This driver also can be used for LAPIS Semiconductor IOH(Input/
 570           Output Hub), ML7223 and ML7831.
 571           ML7223 IOH is for MP(Media Phone) use.
 572           ML7831 IOH is for general purpose use.
 573           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 574           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 575
 576 config GPIO_ML_IOH
 577         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 578         depends on PCI
 579         select GENERIC_IRQ_CHIP
 580         help
 581           ML7213 is companion chip for Intel Atom E6xx series.
 582           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 583           Hub) which is for IVI(In-Vehicle Infotainment) use.
 584           This driver can access the IOH's GPIO device.
 585
 586 config GPIO_SODAVILLE
 587         bool "Intel Sodaville GPIO support"
 588         depends on X86 && PCI && OF
 589         select GPIO_GENERIC
 590         select GENERIC_IRQ_CHIP
 591         help
 592           Say Y here to support Intel Sodaville GPIO.
 593
 594 config GPIO_TIMBERDALE
 595         bool "Support for timberdale GPIO IP"
 596         depends on MFD_TIMBERDALE && HAS_IOMEM
 597         ---help---
 598         Add support for the GPIO IP in the timberdale FPGA.
 599
 600 config GPIO_RDC321X
 601         tristate "RDC R-321x GPIO support"
 602         depends on PCI && GENERIC_HARDIRQS
 603         select MFD_CORE
 604         select MFD_RDC321X
 605         help
 606           Support for the RDC R321x SoC GPIOs over southbridge
 607           PCI configuration space.
 608
 609 comment "SPI GPIO expanders:"
 610
 611 config GPIO_MAX7301
 612         tristate "Maxim MAX7301 GPIO expander"
 613         depends on SPI_MASTER
 614         select GPIO_MAX730X
 615         help
 616           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 617
 618 config GPIO_MCP23S08
 619         tristate "Microchip MCP23xxx I/O expander"
 620         depends on SPI_MASTER || I2C
 621         help
 622           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 623           I/O expanders.
 624           This provides a GPIO interface supporting inputs and outputs.
 625
 626 config GPIO_MC33880
 627         tristate "Freescale MC33880 high-side/low-side switch"
 628         depends on SPI_MASTER
 629         help
 630           SPI driver for Freescale MC33880 high-side/low-side switch.
 631           This provides GPIO interface supporting inputs and outputs.
 632
 633 config GPIO_74X164
 634         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 635         depends on SPI_MASTER
 636         help
 637           Platform driver for 74x164 compatible serial-in/parallel-out
 638           8-outputs shift registers. This driver can be used to provide access
 639           to more gpio outputs.
 640
 641 comment "AC97 GPIO expanders:"
 642
 643 config GPIO_UCB1400
 644         bool "Philips UCB1400 GPIO"
 645         depends on UCB1400_CORE
 646         help
 647           This enables support for the Philips UCB1400 GPIO pins.
 648           The UCB1400 is an AC97 audio codec.
 649
 650 comment "MODULbus GPIO expanders:"
 651
 652 config GPIO_JANZ_TTL
 653         tristate "Janz VMOD-TTL Digital IO Module"
 654         depends on MFD_JANZ_CMODIO
 655         help
 656           This enables support for the Janz VMOD-TTL Digital IO module.
 657           This driver provides support for driving the pins in output
 658           mode only. Input mode is not supported.
 659
 660 config GPIO_TPS6586X
 661         bool "TPS6586X GPIO"
 662         depends on MFD_TPS6586X
 663         help
 664           Select this option to enable GPIO driver for the TPS6586X
 665           chip family.
 666
 667 config GPIO_TPS65910
 668         bool "TPS65910 GPIO"
 669         depends on MFD_TPS65910
 670         help
 671           Select this option to enable GPIO driver for the TPS65910
 672           chip family.
 673
 674 config GPIO_MSIC
 675         bool "Intel MSIC mixed signal gpio support"
 676         depends on MFD_INTEL_MSIC
 677         help
 678           Enable support for GPIO on intel MSIC controllers found in
 679           intel MID devices
 680
 681 comment "USB GPIO expanders:"
 682
 683 config GPIO_VIPERBOARD
 684         tristate "Viperboard GPIO a & b support"
 685         depends on MFD_VIPERBOARD && USB
 686         help
 687           Say yes here to access the GPIO signals of Nano River
 688           Technologies Viperboard. There are two GPIO chips on the
 689           board: gpioa and gpiob.
 690           See viperboard API specification and Nano
 691           River Tech's viperboard.h for detailed meaning
 692           of the module parameters.
 693
 694 endif