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