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