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 GPIOLIB_IRQCHIP
  59         select IRQ_DOMAIN
  60         bool
  61
  62 config DEBUG_GPIO
  63         bool "Debug GPIO calls"
  64         depends on DEBUG_KERNEL
  65         help
  66           Say Y here to add some extra checks and diagnostics to GPIO calls.
  67           These checks help ensure that GPIOs have been properly initialized
  68           before they are used, and that sleeping calls are not made from
  69           non-sleeping contexts.  They can make bitbanged serial protocols
  70           slower.  The diagnostics help catch the type of setup errors
  71           that are most common when setting up new platforms or boards.
  72
  73 config GPIO_SYSFS
  74         bool "/sys/class/gpio/... (sysfs interface)"
  75         depends on SYSFS
  76         help
  77           Say Y here to add a sysfs interface for GPIOs.
  78
  79           This is mostly useful to work around omissions in a system's
  80           kernel support.  Those are common in custom and semicustom
  81           hardware assembled using standard kernels with a minimum of
  82           custom patches.  In those cases, userspace code may import
  83           a given GPIO from the kernel, if no kernel driver requested it.
  84
  85           Kernel drivers may also request that a particular GPIO be
  86           exported to userspace; this can be useful when debugging.
  87
  88 config GPIO_GENERIC
  89         tristate
  90
  91 # put drivers in the right section, in alphabetical order
  92
  93 # This symbol is selected by both I2C and SPI expanders
  94 config GPIO_MAX730X
  95         tristate
  96
  97 menu "Memory mapped GPIO drivers"
  98
  99 config GPIO_74XX_MMIO
 100         tristate "GPIO driver for 74xx-ICs with MMIO access"
 101         depends on OF_GPIO
 102         select GPIO_GENERIC
 103         help
 104           Say yes here to support GPIO functionality for 74xx-compatible ICs
 105           with MMIO access. Compatible models include:
 106             1 bit:      741G125 (Input), 741G74 (Output)
 107             2 bits:     742G125 (Input), 7474 (Output)
 108             4 bits:     74125 (Input), 74175 (Output)
 109             6 bits:     74365 (Input), 74174 (Output)
 110             8 bits:     74244 (Input), 74273 (Output)
 111             16 bits:    741624 (Input), 7416374 (Output)
 112
 113 config GPIO_ALTERA
 114         tristate "Altera GPIO"
 115         depends on OF_GPIO
 116         select GPIO_GENERIC
 117         select GPIOLIB_IRQCHIP
 118         help
 119           Say Y or M here to build support for the Altera PIO device.
 120
 121           If driver is built as a module it will be called gpio-altera.
 122
 123 config GPIO_BCM_KONA
 124         bool "Broadcom Kona GPIO"
 125         depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
 126         help
 127           Turn on GPIO support for Broadcom "Kona" chips.
 128
 129 config GPIO_CLPS711X
 130         tristate "CLPS711X GPIO support"
 131         depends on ARCH_CLPS711X || COMPILE_TEST
 132         select GPIO_GENERIC
 133         help
 134           Say yes here to support GPIO on CLPS711X SoCs.
 135
 136 config GPIO_DAVINCI
 137         bool "TI Davinci/Keystone GPIO support"
 138         default y if ARCH_DAVINCI
 139         depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
 140         help
 141           Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
 142
 143 config GPIO_DWAPB
 144         tristate "Synopsys DesignWare APB GPIO driver"
 145         depends on ((ARM || ARM64) && OF_GPIO) || X86_INTEL_QUARK
 146         select GPIO_GENERIC
 147         select GENERIC_IRQ_CHIP
 148         help
 149           Say Y or M here to build support for the Synopsys DesignWare APB
 150           GPIO block.
 151
 152 config GPIO_EM
 153         tristate "Emma Mobile GPIO"
 154         depends on ARM && OF_GPIO
 155         help
 156           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 157
 158 config GPIO_EP93XX
 159         def_bool y
 160         depends on ARCH_EP93XX
 161         select GPIO_GENERIC
 162
 163 config GPIO_F7188X
 164         tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
 165         depends on X86
 166         help
 167           This option enables support for GPIOs found on Fintek Super-I/O
 168           chips F71869, F71869A, F71882FG and F71889F.
 169
 170           To compile this driver as a module, choose M here: the module will
 171           be called f7188x-gpio.
 172
 173 config GPIO_GE_FPGA
 174         bool "GE FPGA based GPIO"
 175         depends on GE_FPGA
 176         select GPIO_GENERIC
 177         help
 178           Support for common GPIO functionality provided on some GE Single Board
 179           Computers.
 180
 181           This driver provides basic support (configure as input or output, read
 182           and write pin state) for GPIO implemented in a number of GE single
 183           board computers.
 184
 185 config GPIO_GENERIC_PLATFORM
 186         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 187         select GPIO_GENERIC
 188         help
 189           Say yes here to support basic platform_device memory-mapped GPIO controllers.
 190
 191 config GPIO_GRGPIO
 192         tristate "Aeroflex Gaisler GRGPIO support"
 193         depends on OF
 194         select GPIO_GENERIC
 195         select IRQ_DOMAIN
 196         help
 197           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
 198           VHDL IP core library.
 199
 200 config GPIO_ICH
 201         tristate "Intel ICH GPIO"
 202         depends on PCI && X86
 203         select MFD_CORE
 204         select LPC_ICH
 205         help
 206           Say yes here to support the GPIO functionality of a number of Intel
 207           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 208           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
 209           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 210
 211           If unsure, say N.
 212
 213 config GPIO_IOP
 214         tristate "Intel IOP GPIO"
 215         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
 216         help
 217           Say yes here to support the GPIO functionality of a number of Intel
 218           IOP32X or IOP33X.
 219
 220           If unsure, say N.
 221
 222 config GPIO_IT8761E
 223         tristate "IT8761E GPIO support"
 224         depends on X86  # unconditional access to IO space.
 225         help
 226           Say yes here to support GPIO functionality of IT8761E super I/O chip.
 227
 228 config GPIO_LOONGSON
 229         bool "Loongson-2/3 GPIO support"
 230         depends on CPU_LOONGSON2 || CPU_LOONGSON3
 231         help
 232           driver for GPIO functionality on Loongson-2F/3A/3B processors.
 233
 234 config GPIO_LYNXPOINT
 235         tristate "Intel Lynxpoint GPIO support"
 236         depends on ACPI && X86
 237         select GPIOLIB_IRQCHIP
 238         help
 239           driver for GPIO functionality on Intel Lynxpoint PCH chipset
 240           Requires ACPI device enumeration code to set up a platform device.
 241
 242 config GPIO_MB86S7X
 243         bool "GPIO support for Fujitsu MB86S7x Platforms"
 244         depends on ARCH_MB86S7X
 245         help
 246           Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
 247
 248 config GPIO_MM_LANTIQ
 249         bool "Lantiq Memory mapped GPIOs"
 250         depends on LANTIQ && SOC_XWAY
 251         help
 252           This enables support for memory mapped GPIOs on the External Bus Unit
 253           (EBU) found on Lantiq SoCs. The gpios are output only as they are
 254           created by attaching a 16bit latch to the bus.
 255
 256 config GPIO_MOXART
 257         bool "MOXART GPIO support"
 258         depends on ARCH_MOXART
 259         select GPIO_GENERIC
 260         help
 261           Select this option to enable GPIO driver for
 262           MOXA ART SoC devices.
 263
 264 config GPIO_MPC5200
 265         def_bool y
 266         depends on PPC_MPC52xx
 267
 268 config GPIO_MPC8XXX
 269         bool "MPC512x/MPC8xxx GPIO support"
 270         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 271                    FSL_SOC_BOOKE || PPC_86xx
 272         help
 273           Say Y here if you're going to use hardware that connects to the
 274           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 275
 276 config GPIO_MSM_V1
 277         tristate "Qualcomm MSM GPIO v1"
 278         depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
 279         help
 280           Say yes here to support the GPIO interface on ARM v6 based
 281           Qualcomm MSM chips.  Most of the pins on the MSM can be
 282           selected for GPIO, and are controlled by this driver.
 283
 284 config GPIO_MSM_V2
 285         tristate "Qualcomm MSM GPIO v2"
 286         depends on GPIOLIB && OF && ARCH_QCOM
 287         help
 288           Say yes here to support the GPIO interface on ARM v7 based
 289           Qualcomm MSM chips.  Most of the pins on the MSM can be
 290           selected for GPIO, and are controlled by this driver.
 291
 292 config GPIO_MVEBU
 293         def_bool y
 294         depends on PLAT_ORION
 295         depends on OF
 296         select GPIO_GENERIC
 297         select GENERIC_IRQ_CHIP
 298
 299 config GPIO_MXC
 300         def_bool y
 301         depends on ARCH_MXC
 302         select GPIO_GENERIC
 303         select GENERIC_IRQ_CHIP
 304
 305 config GPIO_MXS
 306         def_bool y
 307         depends on ARCH_MXS
 308         select GPIO_GENERIC
 309         select GENERIC_IRQ_CHIP
 310
 311 config GPIO_OCTEON
 312         tristate "Cavium OCTEON GPIO"
 313         depends on GPIOLIB && CAVIUM_OCTEON_SOC
 314         default y
 315         help
 316           Say yes here to support the on-chip GPIO lines on the OCTEON
 317           family of SOCs.
 318
 319 config GPIO_OMAP
 320         bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
 321         default y if ARCH_OMAP
 322         depends on ARM
 323         select GENERIC_IRQ_CHIP
 324         select GPIOLIB_IRQCHIP
 325         help
 326           Say yes here to enable GPIO support for TI OMAP SoCs.
 327
 328 config GPIO_PL061
 329         bool "PrimeCell PL061 GPIO support"
 330         depends on ARM_AMBA
 331         select IRQ_DOMAIN
 332         select GPIOLIB_IRQCHIP
 333         help
 334           Say yes here to support the PrimeCell PL061 GPIO device
 335
 336 config GPIO_PXA
 337         bool "PXA GPIO support"
 338         depends on ARCH_PXA || ARCH_MMP
 339         help
 340           Say yes here to support the PXA GPIO device
 341
 342 config GPIO_RCAR
 343         tristate "Renesas R-Car GPIO"
 344         depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
 345         select GPIOLIB_IRQCHIP
 346         help
 347           Say yes here to support GPIO on Renesas R-Car SoCs.
 348
 349 config GPIO_SAMSUNG
 350         bool
 351         depends on PLAT_SAMSUNG
 352         help
 353           Legacy GPIO support. Use only for platforms without support for
 354           pinctrl.
 355
 356 config GPIO_SCH
 357         tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
 358         depends on PCI && X86
 359         select MFD_CORE
 360         select LPC_SCH
 361         help
 362           Say yes here to support GPIO interface on Intel Poulsbo SCH,
 363           Intel Tunnel Creek processor, Intel Centerton processor or
 364           Intel Quark X1000 SoC.
 365
 366           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 367           powered by the core power rail and are turned off during sleep
 368           modes (S3 and higher). The remaining four GPIOs are powered by
 369           the Intel SCH suspend power supply. These GPIOs remain
 370           active during S3. The suspend powered GPIOs can be used to wake the
 371           system from the Suspend-to-RAM state.
 372
 373           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 374           core power rail and 9 from suspend power supply.
 375
 376           The Intel Centerton processor has a total of 30 GPIO pins.
 377           Twenty-one are powered by the core power rail and 9 from the
 378           suspend power supply.
 379
 380           The Intel Quark X1000 SoC has 2 GPIOs powered by the core
 381           power well and 6 from the suspend power well.
 382
 383 config GPIO_SCH311X
 384         tristate "SMSC SCH311x SuperI/O GPIO"
 385         help
 386           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
 387           SCH3116 "Super I/O" chipsets.
 388
 389           To compile this driver as a module, choose M here: the module will
 390           be called gpio-sch311x.
 391
 392 config GPIO_SPEAR_SPICS
 393         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 394         depends on PLAT_SPEAR
 395         select GENERIC_IRQ_CHIP
 396         help
 397           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
 398
 399 config GPIO_STA2X11
 400         bool "STA2x11/ConneXt GPIO support"
 401         depends on MFD_STA2X11
 402         select GENERIC_IRQ_CHIP
 403         help
 404           Say yes here to support the STA2x11/ConneXt GPIO device.
 405           The GPIO module has 128 GPIO pins with alternate functions.
 406
 407 config GPIO_STP_XWAY
 408         bool "XWAY STP GPIOs"
 409         depends on SOC_XWAY
 410         help
 411           This enables support for the Serial To Parallel (STP) unit found on
 412           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 413           that can be up to 24 bit. This peripheral is aimed at driving leds.
 414           Some of the gpios/leds can be auto updated by the soc with dsl and
 415           phy status.
 416
 417 config GPIO_SYSCON
 418         tristate "GPIO based on SYSCON"
 419         depends on MFD_SYSCON && OF
 420         help
 421           Say yes here to support GPIO functionality though SYSCON driver.
 422
 423 config GPIO_TB10X
 424         bool
 425         select GENERIC_IRQ_CHIP
 426         select OF_GPIO
 427
 428 config GPIO_TS5500
 429         tristate "TS-5500 DIO blocks and compatibles"
 430         depends on TS5500 || COMPILE_TEST
 431         help
 432           This driver supports Digital I/O exposed by pin blocks found on some
 433           Technologic Systems platforms. It includes, but is not limited to, 3
 434           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 435           LCD port.
 436
 437 config GPIO_TZ1090
 438         bool "Toumaz Xenif TZ1090 GPIO support"
 439         depends on SOC_TZ1090
 440         select GENERIC_IRQ_CHIP
 441         default y
 442         help
 443           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
 444
 445 config GPIO_TZ1090_PDC
 446         bool "Toumaz Xenif TZ1090 PDC GPIO support"
 447         depends on SOC_TZ1090
 448         default y
 449         help
 450           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
 451
 452 config GPIO_VF610
 453         def_bool y
 454         depends on ARCH_MXC && SOC_VF610
 455         select GPIOLIB_IRQCHIP
 456         help
 457           Say yes here to support Vybrid vf610 GPIOs.
 458
 459 config GPIO_VR41XX
 460         tristate "NEC VR4100 series General-purpose I/O Uint support"
 461         depends on CPU_VR41XX
 462         help
 463           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 464
 465 config GPIO_VX855
 466         tristate "VIA VX855/VX875 GPIO"
 467         depends on PCI
 468         select MFD_CORE
 469         select MFD_VX855
 470         help
 471           Support access to the VX855/VX875 GPIO lines through the gpio library.
 472
 473           This driver provides common support for accessing the device,
 474           additional drivers must be enabled in order to use the
 475           functionality of the device.
 476
 477 config GPIO_XGENE
 478         bool "APM X-Gene GPIO controller support"
 479         depends on ARM64 && OF_GPIO
 480         help
 481           This driver is to support the GPIO block within the APM X-Gene SoC
 482           platform's generic flash controller. The GPIO pins are muxed with
 483           the generic flash controller's address and data pins. Say yes
 484           here to enable the GFC GPIO functionality.
 485
 486 config GPIO_XGENE_SB
 487         tristate "APM X-Gene GPIO standby controller support"
 488         depends on ARCH_XGENE && OF_GPIO
 489         select GPIO_GENERIC
 490         help
 491           This driver supports the GPIO block within the APM X-Gene
 492           Standby Domain. Say yes here to enable the GPIO functionality.
 493
 494 config GPIO_XILINX
 495         tristate "Xilinx GPIO support"
 496         depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
 497         help
 498           Say yes here to support the Xilinx FPGA GPIO device
 499
 500 config GPIO_XTENSA
 501         bool "Xtensa GPIO32 support"
 502         depends on XTENSA
 503         depends on HAVE_XTENSA_GPIO32
 504         depends on !SMP
 505         help
 506           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
 507           and EXPSTATE (output) ports
 508
 509 config GPIO_ZEVIO
 510         bool "LSI ZEVIO SoC memory mapped GPIOs"
 511         depends on ARM && OF_GPIO
 512         help
 513           Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
 514
 515 config GPIO_ZYNQ
 516         tristate "Xilinx Zynq GPIO support"
 517         depends on ARCH_ZYNQ
 518         select GPIOLIB_IRQCHIP
 519         help
 520           Say yes here to support Xilinx Zynq GPIO controller.
 521
 522 endmenu
 523
 524 menu "I2C GPIO expanders"
 525         depends on I2C
 526
 527 config GPIO_ADP5588
 528         tristate "ADP5588 I2C GPIO expander"
 529         depends on I2C
 530         help
 531           This option enables support for 18 GPIOs found
 532           on Analog Devices ADP5588 GPIO Expanders.
 533
 534 config GPIO_ADP5588_IRQ
 535         bool "Interrupt controller support for ADP5588"
 536         depends on GPIO_ADP5588=y
 537         help
 538           Say yes here to enable the adp5588 to be used as an interrupt
 539           controller. It requires the driver to be built in the kernel.
 540
 541 config GPIO_ADNP
 542         tristate "Avionic Design N-bit GPIO expander"
 543         depends on I2C && OF_GPIO
 544         select GPIOLIB_IRQCHIP
 545         help
 546           This option enables support for N GPIOs found on Avionic Design
 547           I2C GPIO expanders. The register space will be extended by powers
 548           of two, so the controller will need to accommodate for that. For
 549           example: if a controller provides 48 pins, 6 registers will be
 550           enough to represent all pins, but the driver will assume a
 551           register layout for 64 pins (8 registers).
 552
 553 config GPIO_MAX7300
 554         tristate "Maxim MAX7300 GPIO expander"
 555         depends on I2C
 556         select GPIO_MAX730X
 557         help
 558           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
 559
 560 config GPIO_MAX732X
 561         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 562         depends on I2C
 563         help
 564           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 565           Port Expanders. Each IO port on these chips has a fixed role of
 566           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 567           Input and Output (designed by 'P'). The combinations are listed
 568           below:
 569
 570           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 571                         max7322 (4I4O), max7323 (4P4O)
 572
 573           16 bits:      max7324 (8I8O), max7325 (8P8O),
 574                         max7326 (4I12O), max7327 (4P12O)
 575
 576           Board setup code must specify the model to use, and the start
 577           number for these GPIOs.
 578
 579 config GPIO_MAX732X_IRQ
 580         bool "Interrupt controller support for MAX732x"
 581         depends on GPIO_MAX732X=y
 582         select GPIOLIB_IRQCHIP
 583         help
 584           Say yes here to enable the max732x to be used as an interrupt
 585           controller. It requires the driver to be built in the kernel.
 586
 587 config GPIO_MC9S08DZ60
 588         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 589         depends on I2C=y && MACH_MX35_3DS
 590         help
 591           Select this to enable the MC9S08DZ60 GPIO driver
 592
 593 config GPIO_PCA953X
 594         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
 595         depends on I2C
 596         help
 597           Say yes here to provide access to several register-oriented
 598           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 599           models include:
 600
 601           4 bits:       pca9536, pca9537
 602
 603           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
 604                         pca9556, pca9557, pca9574, tca6408, xra1202
 605
 606           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
 607                         tca6416
 608
 609           24 bits:      tca6424
 610
 611           40 bits:      pca9505, pca9698
 612
 613 config GPIO_PCA953X_IRQ
 614         bool "Interrupt controller support for PCA953x"
 615         depends on GPIO_PCA953X=y
 616         select GPIOLIB_IRQCHIP
 617         help
 618           Say yes here to enable the pca953x to be used as an interrupt
 619           controller. It requires the driver to be built in the kernel.
 620
 621 config GPIO_PCF857X
 622         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 623         depends on I2C
 624         select GPIOLIB_IRQCHIP
 625         select IRQ_DOMAIN
 626         help
 627           Say yes here to provide access to most "quasi-bidirectional" I2C
 628           GPIO expanders used for additional digital outputs or inputs.
 629           Most of these parts are from NXP, though TI is a second source for
 630           some of them.  Compatible models include:
 631
 632           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 633                     pca9670, pca9672, pca9674, pca9674a,
 634                     max7328, max7329
 635
 636           16 bits:  pcf8575, pcf8575c, pca8575,
 637                     pca9671, pca9673, pca9675
 638
 639           Your board setup code will need to declare the expanders in
 640           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 641           can then be used from drivers and other kernel code, just like
 642           other GPIOs, but only accessible from task contexts.
 643
 644           This driver provides an in-kernel interface to those GPIOs using
 645           platform-neutral GPIO calls.
 646
 647 config GPIO_SX150X
 648         bool "Semtech SX150x I2C GPIO expander"
 649         depends on I2C=y
 650         select GPIOLIB_IRQCHIP
 651         default n
 652         help
 653           Say yes here to provide support for Semtech SX150-series I2C
 654           GPIO expanders. Compatible models include:
 655
 656           8 bits:  sx1508q
 657           16 bits: sx1509q
 658
 659 endmenu
 660
 661 menu "MFD GPIO expanders"
 662
 663 config GPIO_ADP5520
 664         tristate "GPIO Support for ADP5520 PMIC"
 665         depends on PMIC_ADP5520
 666         help
 667           This option enables support for on-chip GPIO found
 668           on Analog Devices ADP5520 PMICs.
 669
 670 config GPIO_ARIZONA
 671         tristate "Wolfson Microelectronics Arizona class devices"
 672         depends on MFD_ARIZONA
 673         help
 674           Support for GPIOs on Wolfson Arizona class devices.
 675
 676 config GPIO_CRYSTAL_COVE
 677         tristate "GPIO support for Crystal Cove PMIC"
 678         depends on INTEL_SOC_PMIC
 679         select GPIOLIB_IRQCHIP
 680         help
 681           Support for GPIO pins on Crystal Cove PMIC.
 682
 683           Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
 684           inside.
 685
 686           This driver can also be built as a module. If so, the module will be
 687           called gpio-crystalcove.
 688
 689 config GPIO_CS5535
 690         tristate "AMD CS5535/CS5536 GPIO support"
 691         depends on MFD_CS5535
 692         help
 693           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 694           can be used for quite a number of things.  The CS5535/6 is found on
 695           AMD Geode and Lemote Yeeloong devices.
 696
 697           If unsure, say N.
 698
 699 config GPIO_DA9052
 700         tristate "Dialog DA9052 GPIO"
 701         depends on PMIC_DA9052
 702         help
 703           Say yes here to enable the GPIO driver for the DA9052 chip.
 704
 705 config GPIO_DA9055
 706         tristate "Dialog Semiconductor DA9055 GPIO"
 707         depends on MFD_DA9055
 708         help
 709           Say yes here to enable the GPIO driver for the DA9055 chip.
 710
 711           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
 712           be controller by this driver.
 713
 714           If driver is built as a module it will be called gpio-da9055.
 715
 716 config GPIO_DLN2
 717         tristate "Diolan DLN2 GPIO support"
 718         depends on MFD_DLN2
 719         select GPIOLIB_IRQCHIP
 720
 721         help
 722           Select this option to enable GPIO driver for the Diolan DLN2
 723           board.
 724
 725           This driver can also be built as a module. If so, the module
 726           will be called gpio-dln2.
 727
 728 config GPIO_JANZ_TTL
 729         tristate "Janz VMOD-TTL Digital IO Module"
 730         depends on MFD_JANZ_CMODIO
 731         help
 732           This enables support for the Janz VMOD-TTL Digital IO module.
 733           This driver provides support for driving the pins in output
 734           mode only. Input mode is not supported.
 735
 736 config GPIO_KEMPLD
 737         tristate "Kontron ETX / COMexpress GPIO"
 738         depends on MFD_KEMPLD
 739         help
 740           This enables support for the PLD GPIO interface on some Kontron ETX
 741           and COMexpress (ETXexpress) modules.
 742
 743           This driver can also be built as a module. If so, the module will be
 744           called gpio-kempld.
 745
 746 config GPIO_LP3943
 747         tristate "TI/National Semiconductor LP3943 GPIO expander"
 748         depends on MFD_LP3943
 749         help
 750           GPIO driver for LP3943 MFD.
 751           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
 752           Open drain outputs are required for this usage.
 753
 754 config GPIO_MSIC
 755         bool "Intel MSIC mixed signal gpio support"
 756         depends on MFD_INTEL_MSIC
 757         help
 758           Enable support for GPIO on intel MSIC controllers found in
 759           intel MID devices
 760
 761 config GPIO_PALMAS
 762         bool "TI PALMAS series PMICs GPIO"
 763         depends on MFD_PALMAS
 764         help
 765           Select this option to enable GPIO driver for the TI PALMAS
 766           series chip family.
 767
 768 config GPIO_RC5T583
 769         bool "RICOH RC5T583 GPIO"
 770         depends on MFD_RC5T583
 771         help
 772           Select this option to enable GPIO driver for the Ricoh RC5T583
 773           chip family.
 774           This driver provides the support for driving/reading the gpio pins
 775           of RC5T583 device through standard gpio library.
 776
 777 config GPIO_STMPE
 778         bool "STMPE GPIOs"
 779         depends on MFD_STMPE
 780         depends on OF_GPIO
 781         select GPIOLIB_IRQCHIP
 782         help
 783           This enables support for the GPIOs found on the STMPE I/O
 784           Expanders.
 785
 786 config GPIO_TC3589X
 787         bool "TC3589X GPIOs"
 788         depends on MFD_TC3589X
 789         select GPIOLIB_IRQCHIP
 790         help
 791           This enables support for the GPIOs found on the TC3589X
 792           I/O Expander.
 793
 794 config GPIO_TIMBERDALE
 795         bool "Support for timberdale GPIO IP"
 796         depends on MFD_TIMBERDALE
 797         ---help---
 798         Add support for the GPIO IP in the timberdale FPGA.
 799
 800 config GPIO_TPS6586X
 801         bool "TPS6586X GPIO"
 802         depends on MFD_TPS6586X
 803         help
 804           Select this option to enable GPIO driver for the TPS6586X
 805           chip family.
 806
 807 config GPIO_TPS65910
 808         bool "TPS65910 GPIO"
 809         depends on MFD_TPS65910
 810         help
 811           Select this option to enable GPIO driver for the TPS65910
 812           chip family.
 813
 814 config GPIO_TPS65912
 815         tristate "TI TPS65912 GPIO"
 816         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 817         help
 818           This driver supports TPS65912 gpio chip
 819
 820 config GPIO_TWL4030
 821         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 822         depends on TWL4030_CORE
 823         help
 824           Say yes here to access the GPIO signals of various multi-function
 825           power management chips from Texas Instruments.
 826
 827 config GPIO_TWL6040
 828         tristate "TWL6040 GPO"
 829         depends on TWL6040_CORE
 830         help
 831           Say yes here to access the GPO signals of twl6040
 832           audio chip from Texas Instruments.
 833
 834 config GPIO_UCB1400
 835         tristate "Philips UCB1400 GPIO"
 836         depends on UCB1400_CORE
 837         help
 838           This enables support for the Philips UCB1400 GPIO pins.
 839           The UCB1400 is an AC97 audio codec.
 840
 841 config GPIO_WM831X
 842         tristate "WM831x GPIOs"
 843         depends on MFD_WM831X
 844         help
 845           Say yes here to access the GPIO signals of WM831x power management
 846           chips from Wolfson Microelectronics.
 847
 848 config GPIO_WM8350
 849         tristate "WM8350 GPIOs"
 850         depends on MFD_WM8350
 851         help
 852           Say yes here to access the GPIO signals of WM8350 power management
 853           chips from Wolfson Microelectronics.
 854
 855 config GPIO_WM8994
 856         tristate "WM8994 GPIOs"
 857         depends on MFD_WM8994
 858         help
 859           Say yes here to access the GPIO signals of WM8994 audio hub
 860           CODECs from Wolfson Microelectronics.
 861
 862 endmenu
 863
 864 menu "PCI GPIO expanders"
 865         depends on PCI
 866
 867 config GPIO_AMD8111
 868         tristate "AMD 8111 GPIO driver"
 869         depends on PCI
 870         help
 871           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
 872
 873           Note, that usually system firmware/ACPI handles GPIO pins on their
 874           own and users might easily break their systems with uncarefull usage
 875           of this driver!
 876
 877           If unsure, say N
 878
 879 config GPIO_BT8XX
 880         tristate "BT8XX GPIO abuser"
 881         depends on PCI && VIDEO_BT848=n
 882         help
 883           The BT8xx frame grabber chip has 24 GPIO pins that can be abused
 884           as a cheap PCI GPIO card.
 885
 886           This chip can be found on Miro, Hauppauge and STB TV-cards.
 887
 888           The card needs to be physically altered for using it as a
 889           GPIO card. For more information on how to build a GPIO card
 890           from a BT8xx TV card, see the documentation file at
 891           Documentation/bt8xxgpio.txt
 892
 893           If unsure, say N.
 894
 895 config GPIO_INTEL_MID
 896         bool "Intel Mid GPIO support"
 897         depends on PCI && X86
 898         select GPIOLIB_IRQCHIP
 899         help
 900           Say Y here to support Intel Mid GPIO.
 901
 902 config GPIO_ML_IOH
 903         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 904         depends on PCI
 905         select GENERIC_IRQ_CHIP
 906         help
 907           ML7213 is companion chip for Intel Atom E6xx series.
 908           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 909           Hub) which is for IVI(In-Vehicle Infotainment) use.
 910           This driver can access the IOH's GPIO device.
 911
 912 config GPIO_PCH
 913         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 914         depends on PCI && (X86_32 || COMPILE_TEST)
 915         select GENERIC_IRQ_CHIP
 916         help
 917           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 918           which is an IOH(Input/Output Hub) for x86 embedded processor.
 919           This driver can access PCH GPIO device.
 920
 921           This driver also can be used for LAPIS Semiconductor IOH(Input/
 922           Output Hub), ML7223 and ML7831.
 923           ML7223 IOH is for MP(Media Phone) use.
 924           ML7831 IOH is for general purpose use.
 925           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 926           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 927
 928 config GPIO_RDC321X
 929         tristate "RDC R-321x GPIO support"
 930         depends on PCI
 931         select MFD_CORE
 932         select MFD_RDC321X
 933         help
 934           Support for the RDC R321x SoC GPIOs over southbridge
 935           PCI configuration space.
 936
 937 config GPIO_SODAVILLE
 938         bool "Intel Sodaville GPIO support"
 939         depends on X86 && PCI && OF
 940         select GPIO_GENERIC
 941         select GENERIC_IRQ_CHIP
 942         help
 943           Say Y here to support Intel Sodaville GPIO.
 944
 945 endmenu
 946
 947 menu "SPI GPIO expanders"
 948         depends on SPI_MASTER
 949
 950 config GPIO_74X164
 951         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 952         depends on SPI_MASTER && OF
 953         help
 954           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
 955           shift registers. This driver can be used to provide access
 956           to more gpio outputs.
 957
 958 config GPIO_MAX7301
 959         tristate "Maxim MAX7301 GPIO expander"
 960         depends on SPI_MASTER
 961         select GPIO_MAX730X
 962         help
 963           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 964
 965 config GPIO_MCP23S08
 966         tristate "Microchip MCP23xxx I/O expander"
 967         depends on (SPI_MASTER && !I2C) || I2C
 968         help
 969           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 970           I/O expanders.
 971           This provides a GPIO interface supporting inputs and outputs.
 972           The I2C versions of the chips can be used as interrupt-controller.
 973
 974 config GPIO_MC33880
 975         tristate "Freescale MC33880 high-side/low-side switch"
 976         depends on SPI_MASTER
 977         help
 978           SPI driver for Freescale MC33880 high-side/low-side switch.
 979           This provides GPIO interface supporting inputs and outputs.
 980
 981 endmenu
 982
 983 menu "USB GPIO expanders"
 984         depends on USB
 985
 986 config GPIO_VIPERBOARD
 987         tristate "Viperboard GPIO a & b support"
 988         depends on MFD_VIPERBOARD && USB
 989         help
 990           Say yes here to access the GPIO signals of Nano River
 991           Technologies Viperboard. There are two GPIO chips on the
 992           board: gpioa and gpiob.
 993           See viperboard API specification and Nano
 994           River Tech's viperboard.h for detailed meaning
 995           of the module parameters.
 996
 997 endmenu
 998
 999 endif