drivers/gpio/Kconfig

   1 #
   2 # GPIO infrastructure and drivers
   3 #
   4
   5 config ARCH_WANT_OPTIONAL_GPIOLIB
   6         bool
   7         help
   8           Select this config option from the architecture Kconfig, if
   9           it is possible to use gpiolib on the architecture, but let the
  10           user decide whether to actually build it or not.
  11           Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
  12           not depend on GPIOs being available, but rather let the user
  13           decide whether he needs it or not.
  14
  15 config ARCH_REQUIRE_GPIOLIB
  16         bool
  17         select GPIOLIB
  18         help
  19           Platforms select gpiolib if they use this infrastructure
  20           for all their GPIOs, usually starting with ones integrated
  21           into SOC processors.
  22           Selecting this from the architecture code will cause the gpiolib
  23           code to always get built in.
  24
  25
  26
  27 menuconfig GPIOLIB
  28         bool "GPIO Support"
  29         depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
  30         select GENERIC_GPIO
  31         help
  32           This enables GPIO support through the generic GPIO library.
  33           You only need to enable this, if you also want to enable
  34           one or more of the GPIO drivers below.
  35
  36           If unsure, say N.
  37
  38 if GPIOLIB
  39
  40 config DEBUG_GPIO
  41         bool "Debug GPIO calls"
  42         depends on DEBUG_KERNEL
  43         help
  44           Say Y here to add some extra checks and diagnostics to GPIO calls.
  45           These checks help ensure that GPIOs have been properly initialized
  46           before they are used, and that sleeping calls are not made from
  47           non-sleeping contexts.  They can make bitbanged serial protocols
  48           slower.  The diagnostics help catch the type of setup errors
  49           that are most common when setting up new platforms or boards.
  50
  51 config GPIO_SYSFS
  52         bool "/sys/class/gpio/... (sysfs interface)"
  53         depends on SYSFS && EXPERIMENTAL
  54         help
  55           Say Y here to add a sysfs interface for GPIOs.
  56
  57           This is mostly useful to work around omissions in a system's
  58           kernel support.  Those are common in custom and semicustom
  59           hardware assembled using standard kernels with a minimum of
  60           custom patches.  In those cases, userspace code may import
  61           a given GPIO from the kernel, if no kernel driver requested it.
  62
  63           Kernel drivers may also request that a particular GPIO be
  64           exported to userspace; this can be useful when debugging.
  65
  66 config GPIO_GENERIC
  67         tristate
  68
  69 # put drivers in the right section, in alphabetical order
  70
  71 config GPIO_DA9052
  72         tristate "Dialog DA9052 GPIO"
  73         depends on PMIC_DA9052 && BROKEN
  74         help
  75           Say yes here to enable the GPIO driver for the DA9052 chip.
  76
  77 config GPIO_MAX730X
  78         tristate
  79
  80 comment "Memory mapped GPIO drivers:"
  81
  82 config GPIO_GENERIC_PLATFORM
  83         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
  84         select GPIO_GENERIC
  85         help
  86           Say yes here to support basic platform_device memory-mapped GPIO controllers.
  87
  88 config GPIO_IT8761E
  89         tristate "IT8761E GPIO support"
  90         depends on X86  # unconditional access to IO space.
  91         help
  92           Say yes here to support GPIO functionality of IT8761E super I/O chip.
  93
  94 config GPIO_EP93XX
  95         def_bool y
  96         depends on ARCH_EP93XX
  97         select GPIO_GENERIC
  98
  99 config GPIO_MPC5200
 100         def_bool y
 101         depends on PPC_MPC52xx
 102
 103 config GPIO_MPC8XXX
 104         bool "MPC512x/MPC8xxx GPIO support"
 105         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 106                    FSL_SOC_BOOKE || PPC_86xx
 107         help
 108           Say Y here if you're going to use hardware that connects to the
 109           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 110
 111 config GPIO_MSM_V1
 112         tristate "Qualcomm MSM GPIO v1"
 113         depends on GPIOLIB && ARCH_MSM
 114         help
 115           Say yes here to support the GPIO interface on ARM v6 based
 116           Qualcomm MSM chips.  Most of the pins on the MSM can be
 117           selected for GPIO, and are controlled by this driver.
 118
 119 config GPIO_MSM_V2
 120         tristate "Qualcomm MSM GPIO v2"
 121         depends on GPIOLIB && ARCH_MSM
 122         help
 123           Say yes here to support the GPIO interface on ARM v7 based
 124           Qualcomm MSM chips.  Most of the pins on the MSM can be
 125           selected for GPIO, and are controlled by this driver.
 126
 127 config GPIO_MXC
 128         def_bool y
 129         depends on ARCH_MXC
 130         select GPIO_GENERIC
 131         select GENERIC_IRQ_CHIP
 132
 133 config GPIO_MXS
 134         def_bool y
 135         depends on ARCH_MXS
 136         select GPIO_GENERIC
 137         select GENERIC_IRQ_CHIP
 138
 139 config GPIO_PL061
 140         bool "PrimeCell PL061 GPIO support"
 141         depends on ARM_AMBA
 142         select GENERIC_IRQ_CHIP
 143         help
 144           Say yes here to support the PrimeCell PL061 GPIO device
 145
 146 config GPIO_PXA
 147         bool "PXA GPIO support"
 148         depends on ARCH_PXA || ARCH_MMP
 149         help
 150           Say yes here to support the PXA GPIO device
 151
 152 config GPIO_XILINX
 153         bool "Xilinx GPIO support"
 154         depends on PPC_OF || MICROBLAZE
 155         help
 156           Say yes here to support the Xilinx FPGA GPIO device
 157
 158 config GPIO_VR41XX
 159         tristate "NEC VR4100 series General-purpose I/O Uint support"
 160         depends on CPU_VR41XX
 161         help
 162           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 163
 164 config GPIO_SCH
 165         tristate "Intel SCH/TunnelCreek GPIO"
 166         depends on PCI && X86
 167         select MFD_CORE
 168         select LPC_SCH
 169         help
 170           Say yes here to support GPIO interface on Intel Poulsbo SCH
 171           or Intel Tunnel Creek processor.
 172           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 173           powered by the core power rail and are turned off during sleep
 174           modes (S3 and higher). The remaining four GPIOs are powered by
 175           the Intel SCH suspend power supply. These GPIOs remain
 176           active during S3. The suspend powered GPIOs can be used to wake the
 177           system from the Suspend-to-RAM state.
 178           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 179           core power rail and 9 from suspend power supply.
 180
 181 config GPIO_VX855
 182         tristate "VIA VX855/VX875 GPIO"
 183         depends on PCI
 184         select MFD_CORE
 185         select MFD_VX855
 186         help
 187           Support access to the VX855/VX875 GPIO lines through the gpio library.
 188
 189           This driver provides common support for accessing the device,
 190           additional drivers must be enabled in order to use the
 191           functionality of the device.
 192
 193 config GPIO_GE_FPGA
 194         bool "GE FPGA based GPIO"
 195         depends on GE_FPGA
 196         help
 197           Support for common GPIO functionality provided on some GE Single Board
 198           Computers.
 199
 200           This driver provides basic support (configure as input or output, read
 201           and write pin state) for GPIO implemented in a number of GE single
 202           board computers.
 203
 204 comment "I2C GPIO expanders:"
 205
 206 config GPIO_MAX7300
 207         tristate "Maxim MAX7300 GPIO expander"
 208         depends on I2C
 209         select GPIO_MAX730X
 210         help
 211           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 212
 213 config GPIO_MAX732X
 214         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 215         depends on I2C
 216         help
 217           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 218           Port Expanders. Each IO port on these chips has a fixed role of
 219           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 220           Input and Output (designed by 'P'). The combinations are listed
 221           below:
 222
 223           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 224                         max7322 (4I4O), max7323 (4P4O)
 225
 226           16 bits:      max7324 (8I8O), max7325 (8P8O),
 227                         max7326 (4I12O), max7327 (4P12O)
 228
 229           Board setup code must specify the model to use, and the start
 230           number for these GPIOs.
 231
 232 config GPIO_MAX732X_IRQ
 233         bool "Interrupt controller support for MAX732x"
 234         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 235         help
 236           Say yes here to enable the max732x to be used as an interrupt
 237           controller. It requires the driver to be built in the kernel.
 238
 239 config GPIO_PCA953X
 240         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 241         depends on I2C
 242         help
 243           Say yes here to provide access to several register-oriented
 244           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 245           models include:
 246
 247           4 bits:       pca9536, pca9537
 248
 249           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 250                         tca6408
 251
 252           16 bits:      pca9535, pca9539, pca9555, tca6416
 253
 254 config GPIO_PCA953X_IRQ
 255         bool "Interrupt controller support for PCA953x"
 256         depends on GPIO_PCA953X=y
 257         help
 258           Say yes here to enable the pca953x to be used as an interrupt
 259           controller. It requires the driver to be built in the kernel.
 260
 261 config GPIO_PCF857X
 262         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 263         depends on I2C
 264         help
 265           Say yes here to provide access to most "quasi-bidirectional" I2C
 266           GPIO expanders used for additional digital outputs or inputs.
 267           Most of these parts are from NXP, though TI is a second source for
 268           some of them.  Compatible models include:
 269
 270           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 271                     pca9670, pca9672, pca9674, pca9674a,
 272                     max7328, max7329
 273
 274           16 bits:  pcf8575, pcf8575c, pca8575,
 275                     pca9671, pca9673, pca9675
 276
 277           Your board setup code will need to declare the expanders in
 278           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 279           can then be used from drivers and other kernel code, just like
 280           other GPIOs, but only accessible from task contexts.
 281
 282           This driver provides an in-kernel interface to those GPIOs using
 283           platform-neutral GPIO calls.
 284
 285 config GPIO_SX150X
 286         bool "Semtech SX150x I2C GPIO expander"
 287         depends on I2C=y
 288         default n
 289         help
 290           Say yes here to provide support for Semtech SX150-series I2C
 291           GPIO expanders. Compatible models include:
 292
 293           8 bits:  sx1508q
 294           16 bits: sx1509q
 295
 296 config GPIO_STMPE
 297         bool "STMPE GPIOs"
 298         depends on MFD_STMPE
 299         help
 300           This enables support for the GPIOs found on the STMPE I/O
 301           Expanders.
 302
 303 config GPIO_TC3589X
 304         bool "TC3589X GPIOs"
 305         depends on MFD_TC3589X
 306         help
 307           This enables support for the GPIOs found on the TC3589X
 308           I/O Expander.
 309
 310 config GPIO_TPS65912
 311         tristate "TI TPS65912 GPIO"
 312         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 313         help
 314           This driver supports TPS65912 gpio chip
 315
 316 config GPIO_TWL4030
 317         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 318         depends on TWL4030_CORE
 319         help
 320           Say yes here to access the GPIO signals of various multi-function
 321           power management chips from Texas Instruments.
 322
 323 config GPIO_WM831X
 324         tristate "WM831x GPIOs"
 325         depends on MFD_WM831X
 326         help
 327           Say yes here to access the GPIO signals of WM831x power management
 328           chips from Wolfson Microelectronics.
 329
 330 config GPIO_WM8350
 331         tristate "WM8350 GPIOs"
 332         depends on MFD_WM8350
 333         help
 334           Say yes here to access the GPIO signals of WM8350 power management
 335           chips from Wolfson Microelectronics.
 336
 337 config GPIO_WM8994
 338         tristate "WM8994 GPIOs"
 339         depends on MFD_WM8994
 340         help
 341           Say yes here to access the GPIO signals of WM8994 audio hub
 342           CODECs from Wolfson Microelectronics.
 343
 344 config GPIO_ADP5520
 345         tristate "GPIO Support for ADP5520 PMIC"
 346         depends on PMIC_ADP5520
 347         help
 348           This option enables support for on-chip GPIO found
 349           on Analog Devices ADP5520 PMICs.
 350
 351 config GPIO_ADP5588
 352         tristate "ADP5588 I2C GPIO expander"
 353         depends on I2C
 354         help
 355           This option enables support for 18 GPIOs found
 356           on Analog Devices ADP5588 GPIO Expanders.
 357
 358 config GPIO_ADP5588_IRQ
 359         bool "Interrupt controller support for ADP5588"
 360         depends on GPIO_ADP5588=y
 361         help
 362           Say yes here to enable the adp5588 to be used as an interrupt
 363           controller. It requires the driver to be built in the kernel.
 364
 365 comment "PCI GPIO expanders:"
 366
 367 config GPIO_CS5535
 368         tristate "AMD CS5535/CS5536 GPIO support"
 369         depends on PCI && X86 && MFD_CS5535
 370         help
 371           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 372           can be used for quite a number of things.  The CS5535/6 is found on
 373           AMD Geode and Lemote Yeeloong devices.
 374
 375           If unsure, say N.
 376
 377 config GPIO_BT8XX
 378         tristate "BT8XX GPIO abuser"
 379         depends on PCI && VIDEO_BT848=n
 380         help
 381           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 382           as a cheap PCI GPIO card.
 383
 384           This chip can be found on Miro, Hauppauge and STB TV-cards.
 385
 386           The card needs to be physically altered for using it as a
 387           GPIO card. For more information on how to build a GPIO card
 388           from a BT8xx TV card, see the documentation file at
 389           Documentation/bt8xxgpio.txt
 390
 391           If unsure, say N.
 392
 393 config GPIO_LANGWELL
 394         bool "Intel Langwell/Penwell GPIO support"
 395         depends on PCI && X86
 396         help
 397           Say Y here to support Intel Langwell/Penwell GPIO.
 398
 399 config GPIO_PCH
 400         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 401         depends on PCI && X86
 402         select GENERIC_IRQ_CHIP
 403         help
 404           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 405           which is an IOH(Input/Output Hub) for x86 embedded processor.
 406           This driver can access PCH GPIO device.
 407
 408           This driver also can be used for LAPIS Semiconductor IOH(Input/
 409           Output Hub), ML7223 and ML7831.
 410           ML7223 IOH is for MP(Media Phone) use.
 411           ML7831 IOH is for general purpose use.
 412           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 413           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 414
 415 config GPIO_ML_IOH
 416         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 417         depends on PCI
 418         select GENERIC_IRQ_CHIP
 419         help
 420           ML7213 is companion chip for Intel Atom E6xx series.
 421           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 422           Hub) which is for IVI(In-Vehicle Infotainment) use.
 423           This driver can access the IOH's GPIO device.
 424
 425 config GPIO_TIMBERDALE
 426         bool "Support for timberdale GPIO IP"
 427         depends on MFD_TIMBERDALE && HAS_IOMEM
 428         ---help---
 429         Add support for the GPIO IP in the timberdale FPGA.
 430
 431 config GPIO_RDC321X
 432         tristate "RDC R-321x GPIO support"
 433         depends on PCI
 434         select MFD_CORE
 435         select MFD_RDC321X
 436         help
 437           Support for the RDC R321x SoC GPIOs over southbridge
 438           PCI configuration space.
 439
 440 comment "SPI GPIO expanders:"
 441
 442 config GPIO_MAX7301
 443         tristate "Maxim MAX7301 GPIO expander"
 444         depends on SPI_MASTER
 445         select GPIO_MAX730X
 446         help
 447           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 448
 449 config GPIO_MCP23S08
 450         tristate "Microchip MCP23xxx I/O expander"
 451         depends on SPI_MASTER || I2C
 452         help
 453           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 454           I/O expanders.
 455           This provides a GPIO interface supporting inputs and outputs.
 456
 457 config GPIO_MC33880
 458         tristate "Freescale MC33880 high-side/low-side switch"
 459         depends on SPI_MASTER
 460         help
 461           SPI driver for Freescale MC33880 high-side/low-side switch.
 462           This provides GPIO interface supporting inputs and outputs.
 463
 464 config GPIO_74X164
 465         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 466         depends on SPI_MASTER
 467         help
 468           Platform driver for 74x164 compatible serial-in/parallel-out
 469           8-outputs shift registers. This driver can be used to provide access
 470           to more gpio outputs.
 471
 472 comment "AC97 GPIO expanders:"
 473
 474 config GPIO_UCB1400
 475         bool "Philips UCB1400 GPIO"
 476         depends on UCB1400_CORE
 477         help
 478           This enables support for the Philips UCB1400 GPIO pins.
 479           The UCB1400 is an AC97 audio codec.
 480
 481 comment "MODULbus GPIO expanders:"
 482
 483 config GPIO_JANZ_TTL
 484         tristate "Janz VMOD-TTL Digital IO Module"
 485         depends on MFD_JANZ_CMODIO
 486         help
 487           This enables support for the Janz VMOD-TTL Digital IO module.
 488           This driver provides support for driving the pins in output
 489           mode only. Input mode is not supported.
 490
 491 config GPIO_AB8500
 492         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 493         depends on AB8500_CORE && BROKEN
 494         help
 495           Select this to enable the AB8500 IC GPIO driver
 496
 497 config GPIO_TPS65910
 498         bool "TPS65910 GPIO"
 499         depends on MFD_TPS65910
 500         help
 501           Select this option to enable GPIO driver for the TPS65910
 502           chip family.
 503 endif