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         select GPIO_GENERIC
 146         select GENERIC_IRQ_CHIP
 147         help
 148           Say Y or M here to build support for the Synopsys DesignWare APB
 149           GPIO block.
 150
 151 config GPIO_EM
 152         tristate "Emma Mobile GPIO"
 153         depends on ARM && OF_GPIO
 154         help
 155           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
 156
 157 config GPIO_EP93XX
 158         def_bool y
 159         depends on ARCH_EP93XX
 160         select GPIO_GENERIC
 161
 162 config GPIO_F7188X
 163         tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
 164         depends on X86
 165         help
 166           This option enables support for GPIOs found on Fintek Super-I/O
 167           chips F71869, F71869A, F71882FG and F71889F.
 168
 169           To compile this driver as a module, choose M here: the module will
 170           be called f7188x-gpio.
 171
 172 config GPIO_GE_FPGA
 173         bool "GE FPGA based GPIO"
 174         depends on GE_FPGA
 175         select GPIO_GENERIC
 176         help
 177           Support for common GPIO functionality provided on some GE Single Board
 178           Computers.
 179
 180           This driver provides basic support (configure as input or output, read
 181           and write pin state) for GPIO implemented in a number of GE single
 182           board computers.
 183
 184 config GPIO_GENERIC_PLATFORM
 185         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
 186         select GPIO_GENERIC
 187         help
 188           Say yes here to support basic platform_device memory-mapped GPIO controllers.
 189
 190 config GPIO_GRGPIO
 191         tristate "Aeroflex Gaisler GRGPIO support"
 192         depends on OF
 193         select GPIO_GENERIC
 194         select IRQ_DOMAIN
 195         help
 196           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
 197           VHDL IP core library.
 198
 199 config GPIO_ICH
 200         tristate "Intel ICH GPIO"
 201         depends on PCI && X86
 202         select MFD_CORE
 203         select LPC_ICH
 204         help
 205           Say yes here to support the GPIO functionality of a number of Intel
 206           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 207           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
 208           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 209
 210           If unsure, say N.
 211
 212 config GPIO_IOP
 213         tristate "Intel IOP GPIO"
 214         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
 215         help
 216           Say yes here to support the GPIO functionality of a number of Intel
 217           IOP32X or IOP33X.
 218
 219           If unsure, say N.
 220
 221 config GPIO_IT8761E
 222         tristate "IT8761E GPIO support"
 223         depends on X86  # unconditional access to IO space.
 224         help
 225           Say yes here to support GPIO functionality of IT8761E super I/O chip.
 226
 227 config GPIO_LOONGSON
 228         bool "Loongson-2/3 GPIO support"
 229         depends on CPU_LOONGSON2 || CPU_LOONGSON3
 230         help
 231           driver for GPIO functionality on Loongson-2F/3A/3B processors.
 232
 233 config GPIO_LYNXPOINT
 234         tristate "Intel Lynxpoint GPIO support"
 235         depends on ACPI && X86
 236         select GPIOLIB_IRQCHIP
 237         help
 238           driver for GPIO functionality on Intel Lynxpoint PCH chipset
 239           Requires ACPI device enumeration code to set up a platform device.
 240
 241 config GPIO_MB86S7X
 242         bool "GPIO support for Fujitsu MB86S7x Platforms"
 243         depends on ARCH_MB86S7X
 244         help
 245           Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
 246
 247 config GPIO_MM_LANTIQ
 248         bool "Lantiq Memory mapped GPIOs"
 249         depends on LANTIQ && SOC_XWAY
 250         help
 251           This enables support for memory mapped GPIOs on the External Bus Unit
 252           (EBU) found on Lantiq SoCs. The gpios are output only as they are
 253           created by attaching a 16bit latch to the bus.
 254
 255 config GPIO_MOXART
 256         bool "MOXART GPIO support"
 257         depends on ARCH_MOXART
 258         select GPIO_GENERIC
 259         help
 260           Select this option to enable GPIO driver for
 261           MOXA ART SoC devices.
 262
 263 config GPIO_MPC5200
 264         def_bool y
 265         depends on PPC_MPC52xx
 266
 267 config GPIO_MPC8XXX
 268         bool "MPC512x/MPC8xxx GPIO support"
 269         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 270                    FSL_SOC_BOOKE || PPC_86xx
 271         help
 272           Say Y here if you're going to use hardware that connects to the
 273           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 274
 275 config GPIO_MSM_V1
 276         tristate "Qualcomm MSM GPIO v1"
 277         depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
 278         help
 279           Say yes here to support the GPIO interface on ARM v6 based
 280           Qualcomm MSM chips.  Most of the pins on the MSM can be
 281           selected for GPIO, and are controlled by this driver.
 282
 283 config GPIO_MSM_V2
 284         tristate "Qualcomm MSM GPIO v2"
 285         depends on GPIOLIB && OF && ARCH_QCOM
 286         help
 287           Say yes here to support the GPIO interface on ARM v7 based
 288           Qualcomm MSM chips.  Most of the pins on the MSM can be
 289           selected for GPIO, and are controlled by this driver.
 290
 291 config GPIO_MVEBU
 292         def_bool y
 293         depends on PLAT_ORION
 294         depends on OF
 295         select GPIO_GENERIC
 296         select GENERIC_IRQ_CHIP
 297
 298 config GPIO_MXC
 299         def_bool y
 300         depends on ARCH_MXC
 301         select GPIO_GENERIC
 302         select GENERIC_IRQ_CHIP
 303
 304 config GPIO_MXS
 305         def_bool y
 306         depends on ARCH_MXS
 307         select GPIO_GENERIC
 308         select GENERIC_IRQ_CHIP
 309
 310 config GPIO_OCTEON
 311         tristate "Cavium OCTEON GPIO"
 312         depends on GPIOLIB && CAVIUM_OCTEON_SOC
 313         default y
 314         help
 315           Say yes here to support the on-chip GPIO lines on the OCTEON
 316           family of SOCs.
 317
 318 config GPIO_OMAP
 319         bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
 320         default y if ARCH_OMAP
 321         depends on ARM
 322         select GENERIC_IRQ_CHIP
 323         select GPIOLIB_IRQCHIP
 324         help
 325           Say yes here to enable GPIO support for TI OMAP SoCs.
 326
 327 config GPIO_PL061
 328         bool "PrimeCell PL061 GPIO support"
 329         depends on ARM_AMBA
 330         select IRQ_DOMAIN
 331         select GPIOLIB_IRQCHIP
 332         help
 333           Say yes here to support the PrimeCell PL061 GPIO device
 334
 335 config GPIO_PXA
 336         bool "PXA GPIO support"
 337         depends on ARCH_PXA || ARCH_MMP
 338         help
 339           Say yes here to support the PXA GPIO device
 340
 341 config GPIO_RCAR
 342         tristate "Renesas R-Car GPIO"
 343         depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
 344         select GPIOLIB_IRQCHIP
 345         help
 346           Say yes here to support GPIO on Renesas R-Car SoCs.
 347
 348 config GPIO_SAMSUNG
 349         bool
 350         depends on PLAT_SAMSUNG
 351         help
 352           Legacy GPIO support. Use only for platforms without support for
 353           pinctrl.
 354
 355 config GPIO_SCH
 356         tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
 357         depends on PCI && X86
 358         select MFD_CORE
 359         select LPC_SCH
 360         help
 361           Say yes here to support GPIO interface on Intel Poulsbo SCH,
 362           Intel Tunnel Creek processor, Intel Centerton processor or
 363           Intel Quark X1000 SoC.
 364
 365           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 366           powered by the core power rail and are turned off during sleep
 367           modes (S3 and higher). The remaining four GPIOs are powered by
 368           the Intel SCH suspend power supply. These GPIOs remain
 369           active during S3. The suspend powered GPIOs can be used to wake the
 370           system from the Suspend-to-RAM state.
 371
 372           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 373           core power rail and 9 from suspend power supply.
 374
 375           The Intel Centerton processor has a total of 30 GPIO pins.
 376           Twenty-one are powered by the core power rail and 9 from the
 377           suspend power supply.
 378
 379           The Intel Quark X1000 SoC has 2 GPIOs powered by the core
 380           power well and 6 from the suspend power well.
 381
 382 config GPIO_SCH311X
 383         tristate "SMSC SCH311x SuperI/O GPIO"
 384         help
 385           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
 386           SCH3116 "Super I/O" chipsets.
 387
 388           To compile this driver as a module, choose M here: the module will
 389           be called gpio-sch311x.
 390
 391 config GPIO_SPEAR_SPICS
 392         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
 393         depends on PLAT_SPEAR
 394         select GENERIC_IRQ_CHIP
 395         help
 396           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
 397
 398 config GPIO_STA2X11
 399         bool "STA2x11/ConneXt GPIO support"
 400         depends on MFD_STA2X11
 401         select GENERIC_IRQ_CHIP
 402         help
 403           Say yes here to support the STA2x11/ConneXt GPIO device.
 404           The GPIO module has 128 GPIO pins with alternate functions.
 405
 406 config GPIO_STP_XWAY
 407         bool "XWAY STP GPIOs"
 408         depends on SOC_XWAY
 409         help
 410           This enables support for the Serial To Parallel (STP) unit found on
 411           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
 412           that can be up to 24 bit. This peripheral is aimed at driving leds.
 413           Some of the gpios/leds can be auto updated by the soc with dsl and
 414           phy status.
 415
 416 config GPIO_SYSCON
 417         tristate "GPIO based on SYSCON"
 418         depends on MFD_SYSCON && OF
 419         help
 420           Say yes here to support GPIO functionality though SYSCON driver.
 421
 422 config GPIO_TB10X
 423         bool
 424         select GENERIC_IRQ_CHIP
 425         select OF_GPIO
 426
 427 config GPIO_TS5500
 428         tristate "TS-5500 DIO blocks and compatibles"
 429         depends on TS5500 || COMPILE_TEST
 430         help
 431           This driver supports Digital I/O exposed by pin blocks found on some
 432           Technologic Systems platforms. It includes, but is not limited to, 3
 433           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 434           LCD port.
 435
 436 config GPIO_TZ1090
 437         bool "Toumaz Xenif TZ1090 GPIO support"
 438         depends on SOC_TZ1090
 439         select GENERIC_IRQ_CHIP
 440         default y
 441         help
 442           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
 443
 444 config GPIO_TZ1090_PDC
 445         bool "Toumaz Xenif TZ1090 PDC GPIO support"
 446         depends on SOC_TZ1090
 447         default y
 448         help
 449           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
 450
 451 config GPIO_VF610
 452         def_bool y
 453         depends on ARCH_MXC && SOC_VF610
 454         select GPIOLIB_IRQCHIP
 455         help
 456           Say yes here to support Vybrid vf610 GPIOs.
 457
 458 config GPIO_VR41XX
 459         tristate "NEC VR4100 series General-purpose I/O Uint support"
 460         depends on CPU_VR41XX
 461         help
 462           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 463
 464 config GPIO_VX855
 465         tristate "VIA VX855/VX875 GPIO"
 466         depends on PCI
 467         select MFD_CORE
 468         select MFD_VX855
 469         help
 470           Support access to the VX855/VX875 GPIO lines through the gpio library.
 471
 472           This driver provides common support for accessing the device,
 473           additional drivers must be enabled in order to use the
 474           functionality of the device.
 475
 476 config GPIO_XGENE
 477         bool "APM X-Gene GPIO controller support"
 478         depends on ARM64 && OF_GPIO
 479         help
 480           This driver is to support the GPIO block within the APM X-Gene SoC
 481           platform's generic flash controller. The GPIO pins are muxed with
 482           the generic flash controller's address and data pins. Say yes
 483           here to enable the GFC GPIO functionality.
 484
 485 config GPIO_XGENE_SB
 486         tristate "APM X-Gene GPIO standby controller support"
 487         depends on ARCH_XGENE && OF_GPIO
 488         select GPIO_GENERIC
 489         help
 490           This driver supports the GPIO block within the APM X-Gene
 491           Standby Domain. Say yes here to enable the GPIO functionality.
 492
 493 config GPIO_XILINX
 494         tristate "Xilinx GPIO support"
 495         depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
 496         help
 497           Say yes here to support the Xilinx FPGA GPIO device
 498
 499 config GPIO_XTENSA
 500         bool "Xtensa GPIO32 support"
 501         depends on XTENSA
 502         depends on HAVE_XTENSA_GPIO32
 503         depends on !SMP
 504         help
 505           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
 506           and EXPSTATE (output) ports
 507
 508 config GPIO_ZEVIO
 509         bool "LSI ZEVIO SoC memory mapped GPIOs"
 510         depends on ARM && OF_GPIO
 511         help
 512           Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
 513
 514 config GPIO_ZYNQ
 515         tristate "Xilinx Zynq GPIO support"
 516         depends on ARCH_ZYNQ
 517         select GPIOLIB_IRQCHIP
 518         help
 519           Say yes here to support Xilinx Zynq GPIO controller.
 520
 521 endmenu
 522
 523 menu "I2C GPIO expanders"
 524         depends on I2C
 525
 526 config GPIO_ADP5588
 527         tristate "ADP5588 I2C GPIO expander"
 528         depends on I2C
 529         help
 530           This option enables support for 18 GPIOs found
 531           on Analog Devices ADP5588 GPIO Expanders.
 532
 533 config GPIO_ADP5588_IRQ
 534         bool "Interrupt controller support for ADP5588"
 535         depends on GPIO_ADP5588=y
 536         help
 537           Say yes here to enable the adp5588 to be used as an interrupt
 538           controller. It requires the driver to be built in the kernel.
 539
 540 config GPIO_ADNP
 541         tristate "Avionic Design N-bit GPIO expander"
 542         depends on I2C && OF_GPIO
 543         select GPIOLIB_IRQCHIP
 544         help
 545           This option enables support for N GPIOs found on Avionic Design
 546           I2C GPIO expanders. The register space will be extended by powers
 547           of two, so the controller will need to accommodate for that. For
 548           example: if a controller provides 48 pins, 6 registers will be
 549           enough to represent all pins, but the driver will assume a
 550           register layout for 64 pins (8 registers).
 551
 552 config GPIO_MAX7300
 553         tristate "Maxim MAX7300 GPIO expander"
 554         depends on I2C
 555         select GPIO_MAX730X
 556         help
 557           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
 558
 559 config GPIO_MAX732X
 560         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 561         depends on I2C
 562         help
 563           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 564           Port Expanders. Each IO port on these chips has a fixed role of
 565           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 566           Input and Output (designed by 'P'). The combinations are listed
 567           below:
 568
 569           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 570                         max7322 (4I4O), max7323 (4P4O)
 571
 572           16 bits:      max7324 (8I8O), max7325 (8P8O),
 573                         max7326 (4I12O), max7327 (4P12O)
 574
 575           Board setup code must specify the model to use, and the start
 576           number for these GPIOs.
 577
 578 config GPIO_MAX732X_IRQ
 579         bool "Interrupt controller support for MAX732x"
 580         depends on GPIO_MAX732X=y
 581         select GPIOLIB_IRQCHIP
 582         help
 583           Say yes here to enable the max732x to be used as an interrupt
 584           controller. It requires the driver to be built in the kernel.
 585
 586 config GPIO_MC9S08DZ60
 587         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 588         depends on I2C=y && MACH_MX35_3DS
 589         help
 590           Select this to enable the MC9S08DZ60 GPIO driver
 591
 592 config GPIO_PCA953X
 593         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
 594         depends on I2C
 595         help
 596           Say yes here to provide access to several register-oriented
 597           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 598           models include:
 599
 600           4 bits:       pca9536, pca9537
 601
 602           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
 603                         pca9556, pca9557, pca9574, tca6408, xra1202
 604
 605           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
 606                         tca6416
 607
 608           24 bits:      tca6424
 609
 610           40 bits:      pca9505, pca9698
 611
 612 config GPIO_PCA953X_IRQ
 613         bool "Interrupt controller support for PCA953x"
 614         depends on GPIO_PCA953X=y
 615         select GPIOLIB_IRQCHIP
 616         help
 617           Say yes here to enable the pca953x to be used as an interrupt
 618           controller. It requires the driver to be built in the kernel.
 619
 620 config GPIO_PCF857X
 621         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 622         depends on I2C
 623         select GPIOLIB_IRQCHIP
 624         select IRQ_DOMAIN
 625         help
 626           Say yes here to provide access to most "quasi-bidirectional" I2C
 627           GPIO expanders used for additional digital outputs or inputs.
 628           Most of these parts are from NXP, though TI is a second source for
 629           some of them.  Compatible models include:
 630
 631           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 632                     pca9670, pca9672, pca9674, pca9674a,
 633                     max7328, max7329
 634
 635           16 bits:  pcf8575, pcf8575c, pca8575,
 636                     pca9671, pca9673, pca9675
 637
 638           Your board setup code will need to declare the expanders in
 639           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 640           can then be used from drivers and other kernel code, just like
 641           other GPIOs, but only accessible from task contexts.
 642
 643           This driver provides an in-kernel interface to those GPIOs using
 644           platform-neutral GPIO calls.
 645
 646 config GPIO_SX150X
 647         bool "Semtech SX150x I2C GPIO expander"
 648         depends on I2C=y
 649         select GPIOLIB_IRQCHIP
 650         default n
 651         help
 652           Say yes here to provide support for Semtech SX150-series I2C
 653           GPIO expanders. Compatible models include:
 654
 655           8 bits:  sx1508q
 656           16 bits: sx1509q
 657
 658 endmenu
 659
 660 menu "MFD GPIO expanders"
 661
 662 config GPIO_ADP5520
 663         tristate "GPIO Support for ADP5520 PMIC"
 664         depends on PMIC_ADP5520
 665         help
 666           This option enables support for on-chip GPIO found
 667           on Analog Devices ADP5520 PMICs.
 668
 669 config GPIO_ARIZONA
 670         tristate "Wolfson Microelectronics Arizona class devices"
 671         depends on MFD_ARIZONA
 672         help
 673           Support for GPIOs on Wolfson Arizona class devices.
 674
 675 config GPIO_CRYSTAL_COVE
 676         tristate "GPIO support for Crystal Cove PMIC"
 677         depends on INTEL_SOC_PMIC
 678         select GPIOLIB_IRQCHIP
 679         help
 680           Support for GPIO pins on Crystal Cove PMIC.
 681
 682           Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
 683           inside.
 684
 685           This driver can also be built as a module. If so, the module will be
 686           called gpio-crystalcove.
 687
 688 config GPIO_CS5535
 689         tristate "AMD CS5535/CS5536 GPIO support"
 690         depends on MFD_CS5535
 691         help
 692           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 693           can be used for quite a number of things.  The CS5535/6 is found on
 694           AMD Geode and Lemote Yeeloong devices.
 695
 696           If unsure, say N.
 697
 698 config GPIO_DA9052
 699         tristate "Dialog DA9052 GPIO"
 700         depends on PMIC_DA9052
 701         help
 702           Say yes here to enable the GPIO driver for the DA9052 chip.
 703
 704 config GPIO_DA9055
 705         tristate "Dialog Semiconductor DA9055 GPIO"
 706         depends on MFD_DA9055
 707         help
 708           Say yes here to enable the GPIO driver for the DA9055 chip.
 709
 710           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
 711           be controller by this driver.
 712
 713           If driver is built as a module it will be called gpio-da9055.
 714
 715 config GPIO_DLN2
 716         tristate "Diolan DLN2 GPIO support"
 717         depends on MFD_DLN2
 718         select GPIOLIB_IRQCHIP
 719
 720         help
 721           Select this option to enable GPIO driver for the Diolan DLN2
 722           board.
 723
 724           This driver can also be built as a module. If so, the module
 725           will be called gpio-dln2.
 726
 727 config GPIO_JANZ_TTL
 728         tristate "Janz VMOD-TTL Digital IO Module"
 729         depends on MFD_JANZ_CMODIO
 730         help
 731           This enables support for the Janz VMOD-TTL Digital IO module.
 732           This driver provides support for driving the pins in output
 733           mode only. Input mode is not supported.
 734
 735 config GPIO_KEMPLD
 736         tristate "Kontron ETX / COMexpress GPIO"
 737         depends on MFD_KEMPLD
 738         help
 739           This enables support for the PLD GPIO interface on some Kontron ETX
 740           and COMexpress (ETXexpress) modules.
 741
 742           This driver can also be built as a module. If so, the module will be
 743           called gpio-kempld.
 744
 745 config GPIO_LP3943
 746         tristate "TI/National Semiconductor LP3943 GPIO expander"
 747         depends on MFD_LP3943
 748         help
 749           GPIO driver for LP3943 MFD.
 750           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
 751           Open drain outputs are required for this usage.
 752
 753 config GPIO_MSIC
 754         bool "Intel MSIC mixed signal gpio support"
 755         depends on MFD_INTEL_MSIC
 756         help
 757           Enable support for GPIO on intel MSIC controllers found in
 758           intel MID devices
 759
 760 config GPIO_PALMAS
 761         bool "TI PALMAS series PMICs GPIO"
 762         depends on MFD_PALMAS
 763         help
 764           Select this option to enable GPIO driver for the TI PALMAS
 765           series chip family.
 766
 767 config GPIO_RC5T583
 768         bool "RICOH RC5T583 GPIO"
 769         depends on MFD_RC5T583
 770         help
 771           Select this option to enable GPIO driver for the Ricoh RC5T583
 772           chip family.
 773           This driver provides the support for driving/reading the gpio pins
 774           of RC5T583 device through standard gpio library.
 775
 776 config GPIO_STMPE
 777         bool "STMPE GPIOs"
 778         depends on MFD_STMPE
 779         depends on OF_GPIO
 780         select GPIOLIB_IRQCHIP
 781         help
 782           This enables support for the GPIOs found on the STMPE I/O
 783           Expanders.
 784
 785 config GPIO_TC3589X
 786         bool "TC3589X GPIOs"
 787         depends on MFD_TC3589X
 788         depends on OF_GPIO
 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