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