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 # put drivers in the right section, in alphabetical order
  67
  68 config GPIO_MAX730X
  69         tristate
  70
  71 comment "Memory mapped GPIO drivers:"
  72
  73 config GPIO_BASIC_MMIO_CORE
  74         tristate
  75         help
  76           Provides core functionality for basic memory-mapped GPIO controllers.
  77
  78 config GPIO_BASIC_MMIO
  79         tristate "Basic memory-mapped GPIO controllers support"
  80         select GPIO_BASIC_MMIO_CORE
  81         help
  82           Say yes here to support basic memory-mapped GPIO controllers.
  83
  84 config GPIO_IT8761E
  85         tristate "IT8761E GPIO support"
  86         help
  87           Say yes here to support GPIO functionality of IT8761E super I/O chip.
  88
  89 config GPIO_EXYNOS4
  90         bool "Samsung Exynos4 GPIO library support"
  91         default y if CPU_EXYNOS4210
  92         depends on ARM
  93         help
  94           Say yes here to support Samsung Exynos4 series SoCs GPIO library
  95
  96 config GPIO_MXS
  97         def_bool y
  98         depends on ARCH_MXS
  99
 100 config GPIO_MXC
 101         def_bool y
 102         depends on ARCH_MXC
 103
 104 config GPIO_PLAT_SAMSUNG
 105         bool "Samsung SoCs GPIO library support"
 106         default y if SAMSUNG_GPIOLIB_4BIT
 107         depends on ARM
 108         help
 109           Say yes here to support Samsung SoCs GPIO library
 110
 111 config GPIO_S5PC100
 112         bool "Samsung S5PC100 GPIO library support"
 113         default y if CPU_S5PC100
 114         depends on ARM
 115         help
 116           Say yes here to support Samsung S5PC100 SoCs GPIO library
 117
 118 config GPIO_S5PV210
 119         bool "Samsung S5PV210/S5PC110 GPIO library support"
 120         default y if CPU_S5PV210
 121         depends on ARM
 122         help
 123           Say yes here to support Samsung S5PV210/S5PC110 SoCs GPIO library
 124
 125 config GPIO_PL061
 126         bool "PrimeCell PL061 GPIO support"
 127         depends on ARM_AMBA
 128         help
 129           Say yes here to support the PrimeCell PL061 GPIO device
 130
 131 config GPIO_XILINX
 132         bool "Xilinx GPIO support"
 133         depends on PPC_OF || MICROBLAZE
 134         help
 135           Say yes here to support the Xilinx FPGA GPIO device
 136
 137 config GPIO_VR41XX
 138         tristate "NEC VR4100 series General-purpose I/O Uint support"
 139         depends on CPU_VR41XX
 140         help
 141           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 142
 143 config GPIO_SCH
 144         tristate "Intel SCH/TunnelCreek GPIO"
 145         depends on PCI && X86
 146         select MFD_CORE
 147         select LPC_SCH
 148         help
 149           Say yes here to support GPIO interface on Intel Poulsbo SCH
 150           or Intel Tunnel Creek processor.
 151           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 152           powered by the core power rail and are turned off during sleep
 153           modes (S3 and higher). The remaining four GPIOs are powered by
 154           the Intel SCH suspend power supply. These GPIOs remain
 155           active during S3. The suspend powered GPIOs can be used to wake the
 156           system from the Suspend-to-RAM state.
 157           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 158           core power rail and 9 from suspend power supply.
 159
 160           This driver can also be built as a module. If so, the module
 161           will be called sch-gpio.
 162
 163 config GPIO_VX855
 164         tristate "VIA VX855/VX875 GPIO"
 165         depends on MFD_SUPPORT && PCI
 166         select MFD_CORE
 167         select MFD_VX855
 168         help
 169           Support access to the VX855/VX875 GPIO lines through the gpio library.
 170
 171           This driver provides common support for accessing the device,
 172           additional drivers must be enabled in order to use the
 173           functionality of the device.
 174
 175 comment "I2C GPIO expanders:"
 176
 177 config GPIO_MAX7300
 178         tristate "Maxim MAX7300 GPIO expander"
 179         depends on I2C
 180         select GPIO_MAX730X
 181         help
 182           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 183
 184 config GPIO_MAX732X
 185         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 186         depends on I2C
 187         help
 188           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 189           Port Expanders. Each IO port on these chips has a fixed role of
 190           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 191           Input and Output (designed by 'P'). The combinations are listed
 192           below:
 193
 194           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 195                         max7322 (4I4O), max7323 (4P4O)
 196
 197           16 bits:      max7324 (8I8O), max7325 (8P8O),
 198                         max7326 (4I12O), max7327 (4P12O)
 199
 200           Board setup code must specify the model to use, and the start
 201           number for these GPIOs.
 202
 203 config GPIO_MAX732X_IRQ
 204         bool "Interrupt controller support for MAX732x"
 205         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 206         help
 207           Say yes here to enable the max732x to be used as an interrupt
 208           controller. It requires the driver to be built in the kernel.
 209
 210 config GPIO_PCA953X
 211         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 212         depends on I2C
 213         help
 214           Say yes here to provide access to several register-oriented
 215           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 216           models include:
 217
 218           4 bits:       pca9536, pca9537
 219
 220           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 221                         tca6408
 222
 223           16 bits:      pca9535, pca9539, pca9555, tca6416
 224
 225           This driver can also be built as a module.  If so, the module
 226           will be called pca953x.
 227
 228 config GPIO_PCA953X_IRQ
 229         bool "Interrupt controller support for PCA953x"
 230         depends on GPIO_PCA953X=y
 231         help
 232           Say yes here to enable the pca953x to be used as an interrupt
 233           controller. It requires the driver to be built in the kernel.
 234
 235 config GPIO_PCF857X
 236         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 237         depends on I2C
 238         help
 239           Say yes here to provide access to most "quasi-bidirectional" I2C
 240           GPIO expanders used for additional digital outputs or inputs.
 241           Most of these parts are from NXP, though TI is a second source for
 242           some of them.  Compatible models include:
 243
 244           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 245                     pca9670, pca9672, pca9674, pca9674a,
 246                     max7328, max7329
 247
 248           16 bits:  pcf8575, pcf8575c, pca8575,
 249                     pca9671, pca9673, pca9675
 250
 251           Your board setup code will need to declare the expanders in
 252           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 253           can then be used from drivers and other kernel code, just like
 254           other GPIOs, but only accessible from task contexts.
 255
 256           This driver provides an in-kernel interface to those GPIOs using
 257           platform-neutral GPIO calls.
 258
 259 config GPIO_SX150X
 260         bool "Semtech SX150x I2C GPIO expander"
 261         depends on I2C=y
 262         default n
 263         help
 264           Say yes here to provide support for Semtech SX150-series I2C
 265           GPIO expanders. Compatible models include:
 266
 267           8 bits:  sx1508q
 268           16 bits: sx1509q
 269
 270 config GPIO_STMPE
 271         bool "STMPE GPIOs"
 272         depends on MFD_STMPE
 273         help
 274           This enables support for the GPIOs found on the STMPE I/O
 275           Expanders.
 276
 277 config GPIO_TC3589X
 278         bool "TC3589X GPIOs"
 279         depends on MFD_TC3589X
 280         help
 281           This enables support for the GPIOs found on the TC3589X
 282           I/O Expander.
 283
 284 config GPIO_TWL4030
 285         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 286         depends on TWL4030_CORE
 287         help
 288           Say yes here to access the GPIO signals of various multi-function
 289           power management chips from Texas Instruments.
 290
 291 config GPIO_WM831X
 292         tristate "WM831x GPIOs"
 293         depends on MFD_WM831X
 294         help
 295           Say yes here to access the GPIO signals of WM831x power management
 296           chips from Wolfson Microelectronics.
 297
 298 config GPIO_WM8350
 299         tristate "WM8350 GPIOs"
 300         depends on MFD_WM8350
 301         help
 302           Say yes here to access the GPIO signals of WM8350 power management
 303           chips from Wolfson Microelectronics.
 304
 305 config GPIO_WM8994
 306         tristate "WM8994 GPIOs"
 307         depends on MFD_WM8994
 308         help
 309           Say yes here to access the GPIO signals of WM8994 audio hub
 310           CODECs from Wolfson Microelectronics.
 311
 312 config GPIO_ADP5520
 313         tristate "GPIO Support for ADP5520 PMIC"
 314         depends on PMIC_ADP5520
 315         help
 316           This option enables support for on-chip GPIO found
 317           on Analog Devices ADP5520 PMICs.
 318
 319           To compile this driver as a module, choose M here: the module will
 320           be called adp5520-gpio.
 321
 322 config GPIO_ADP5588
 323         tristate "ADP5588 I2C GPIO expander"
 324         depends on I2C
 325         help
 326           This option enables support for 18 GPIOs found
 327           on Analog Devices ADP5588 GPIO Expanders.
 328           To compile this driver as a module, choose M here: the module will be
 329           called adp5588-gpio.
 330
 331 config GPIO_ADP5588_IRQ
 332         bool "Interrupt controller support for ADP5588"
 333         depends on GPIO_ADP5588=y
 334         help
 335           Say yes here to enable the adp5588 to be used as an interrupt
 336           controller. It requires the driver to be built in the kernel.
 337
 338 comment "PCI GPIO expanders:"
 339
 340 config GPIO_CS5535
 341         tristate "AMD CS5535/CS5536 GPIO support"
 342         depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
 343         help
 344           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 345           can be used for quite a number of things.  The CS5535/6 is found on
 346           AMD Geode and Lemote Yeeloong devices.
 347
 348           If unsure, say N.
 349
 350 config GPIO_BT8XX
 351         tristate "BT8XX GPIO abuser"
 352         depends on PCI && VIDEO_BT848=n
 353         help
 354           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 355           as a cheap PCI GPIO card.
 356
 357           This chip can be found on Miro, Hauppauge and STB TV-cards.
 358
 359           The card needs to be physically altered for using it as a
 360           GPIO card. For more information on how to build a GPIO card
 361           from a BT8xx TV card, see the documentation file at
 362           Documentation/bt8xxgpio.txt
 363
 364           If unsure, say N.
 365
 366 config GPIO_LANGWELL
 367         bool "Intel Langwell/Penwell GPIO support"
 368         depends on PCI && X86
 369         help
 370           Say Y here to support Intel Langwell/Penwell GPIO.
 371
 372 config GPIO_PCH
 373         tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
 374         depends on PCI && X86
 375         help
 376           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 377           which is an IOH(Input/Output Hub) for x86 embedded processor.
 378           This driver can access PCH GPIO device.
 379
 380           This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
 381           Output Hub), ML7223.
 382           ML7223 IOH is for MP(Media Phone) use.
 383           ML7223 is companion chip for Intel Atom E6xx series.
 384           ML7223 is completely compatible for Intel EG20T PCH.
 385
 386 config GPIO_ML_IOH
 387         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 388         depends on PCI
 389         help
 390           ML7213 is companion chip for Intel Atom E6xx series.
 391           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 392           Hub) which is for IVI(In-Vehicle Infotainment) use.
 393           This driver can access the IOH's GPIO device.
 394
 395 config GPIO_TIMBERDALE
 396         bool "Support for timberdale GPIO IP"
 397         depends on MFD_TIMBERDALE && HAS_IOMEM
 398         ---help---
 399         Add support for the GPIO IP in the timberdale FPGA.
 400
 401 config GPIO_RDC321X
 402         tristate "RDC R-321x GPIO support"
 403         depends on PCI
 404         select MFD_SUPPORT
 405         select MFD_CORE
 406         select MFD_RDC321X
 407         help
 408           Support for the RDC R321x SoC GPIOs over southbridge
 409           PCI configuration space.
 410
 411 comment "SPI GPIO expanders:"
 412
 413 config GPIO_MAX7301
 414         tristate "Maxim MAX7301 GPIO expander"
 415         depends on SPI_MASTER
 416         select GPIO_MAX730X
 417         help
 418           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 419
 420 config GPIO_MCP23S08
 421         tristate "Microchip MCP23Sxx I/O expander"
 422         depends on SPI_MASTER
 423         help
 424           SPI driver for Microchip MCP23S08/MPC23S17 I/O expanders.
 425           This provides a GPIO interface supporting inputs and outputs.
 426
 427 config GPIO_MC33880
 428         tristate "Freescale MC33880 high-side/low-side switch"
 429         depends on SPI_MASTER
 430         help
 431           SPI driver for Freescale MC33880 high-side/low-side switch.
 432           This provides GPIO interface supporting inputs and outputs.
 433
 434 config GPIO_74X164
 435         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 436         depends on SPI_MASTER
 437         help
 438           Platform driver for 74x164 compatible serial-in/parallel-out
 439           8-outputs shift registers. This driver can be used to provide access
 440           to more gpio outputs.
 441
 442 comment "AC97 GPIO expanders:"
 443
 444 config GPIO_UCB1400
 445         bool "Philips UCB1400 GPIO"
 446         depends on UCB1400_CORE
 447         help
 448           This enables support for the Philips UCB1400 GPIO pins.
 449           The UCB1400 is an AC97 audio codec.
 450
 451           To compile this driver as a module, choose M here: the
 452           module will be called ucb1400_gpio.
 453
 454 comment "MODULbus GPIO expanders:"
 455
 456 config GPIO_JANZ_TTL
 457         tristate "Janz VMOD-TTL Digital IO Module"
 458         depends on MFD_JANZ_CMODIO
 459         help
 460           This enables support for the Janz VMOD-TTL Digital IO module.
 461           This driver provides support for driving the pins in output
 462           mode only. Input mode is not supported.
 463
 464 config AB8500_GPIO
 465         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 466         depends on AB8500_CORE && BROKEN
 467         help
 468           Select this to enable the AB8500 IC GPIO driver
 469
 470 config GPIO_TPS65910
 471         bool "TPS65910 GPIO"
 472         depends on MFD_TPS65910
 473         help
 474           Select this option to enable GPIO driver for the TPS65910
 475           chip family.
 476 endif