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