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
  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         help
  91           Say yes here to support GPIO functionality of IT8761E super I/O chip.
  92
  93 config GPIO_EP93XX
  94         def_bool y
  95         depends on ARCH_EP93XX
  96         select GPIO_GENERIC
  97
  98 config GPIO_EXYNOS4
  99         def_bool y
 100         depends on CPU_EXYNOS4210
 101
 102 config GPIO_MPC5200
 103         def_bool y
 104         depends on PPC_MPC52xx
 105
 106 config GPIO_MSM_V1
 107         tristate "Qualcomm MSM GPIO v1"
 108         depends on GPIOLIB && ARCH_MSM
 109         help
 110           Say yes here to support the GPIO interface on ARM v6 based
 111           Qualcomm MSM chips.  Most of the pins on the MSM can be
 112           selected for GPIO, and are controlled by this driver.
 113
 114 config GPIO_MSM_V2
 115         tristate "Qualcomm MSM GPIO v2"
 116         depends on GPIOLIB && ARCH_MSM
 117         help
 118           Say yes here to support the GPIO interface on ARM v7 based
 119           Qualcomm MSM chips.  Most of the pins on the MSM can be
 120           selected for GPIO, and are controlled by this driver.
 121
 122 config GPIO_MXC
 123         def_bool y
 124         depends on ARCH_MXC
 125         select GPIO_GENERIC
 126         select GENERIC_IRQ_CHIP
 127
 128 config GPIO_MXS
 129         def_bool y
 130         depends on ARCH_MXS
 131         select GPIO_GENERIC
 132         select GENERIC_IRQ_CHIP
 133
 134 config GPIO_PLAT_SAMSUNG
 135         def_bool y
 136         depends on SAMSUNG_GPIOLIB_4BIT
 137
 138 config GPIO_S5PC100
 139         def_bool y
 140         depends on CPU_S5PC100
 141
 142 config GPIO_S5PV210
 143         def_bool y
 144         depends on CPU_S5PV210
 145
 146 config GPIO_PL061
 147         bool "PrimeCell PL061 GPIO support"
 148         depends on ARM_AMBA
 149         help
 150           Say yes here to support the PrimeCell PL061 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 MFD_SUPPORT && 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 comment "I2C GPIO expanders:"
 194
 195 config GPIO_MAX7300
 196         tristate "Maxim MAX7300 GPIO expander"
 197         depends on I2C
 198         select GPIO_MAX730X
 199         help
 200           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 201
 202 config GPIO_MAX732X
 203         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 204         depends on I2C
 205         help
 206           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 207           Port Expanders. Each IO port on these chips has a fixed role of
 208           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 209           Input and Output (designed by 'P'). The combinations are listed
 210           below:
 211
 212           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 213                         max7322 (4I4O), max7323 (4P4O)
 214
 215           16 bits:      max7324 (8I8O), max7325 (8P8O),
 216                         max7326 (4I12O), max7327 (4P12O)
 217
 218           Board setup code must specify the model to use, and the start
 219           number for these GPIOs.
 220
 221 config GPIO_MAX732X_IRQ
 222         bool "Interrupt controller support for MAX732x"
 223         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 224         help
 225           Say yes here to enable the max732x to be used as an interrupt
 226           controller. It requires the driver to be built in the kernel.
 227
 228 config GPIO_PCA953X
 229         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 230         depends on I2C
 231         help
 232           Say yes here to provide access to several register-oriented
 233           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 234           models include:
 235
 236           4 bits:       pca9536, pca9537
 237
 238           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 239                         tca6408
 240
 241           16 bits:      pca9535, pca9539, pca9555, tca6416
 242
 243 config GPIO_PCA953X_IRQ
 244         bool "Interrupt controller support for PCA953x"
 245         depends on GPIO_PCA953X=y
 246         help
 247           Say yes here to enable the pca953x to be used as an interrupt
 248           controller. It requires the driver to be built in the kernel.
 249
 250 config GPIO_PCF857X
 251         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 252         depends on I2C
 253         help
 254           Say yes here to provide access to most "quasi-bidirectional" I2C
 255           GPIO expanders used for additional digital outputs or inputs.
 256           Most of these parts are from NXP, though TI is a second source for
 257           some of them.  Compatible models include:
 258
 259           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 260                     pca9670, pca9672, pca9674, pca9674a,
 261                     max7328, max7329
 262
 263           16 bits:  pcf8575, pcf8575c, pca8575,
 264                     pca9671, pca9673, pca9675
 265
 266           Your board setup code will need to declare the expanders in
 267           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 268           can then be used from drivers and other kernel code, just like
 269           other GPIOs, but only accessible from task contexts.
 270
 271           This driver provides an in-kernel interface to those GPIOs using
 272           platform-neutral GPIO calls.
 273
 274 config GPIO_SX150X
 275         bool "Semtech SX150x I2C GPIO expander"
 276         depends on I2C=y
 277         default n
 278         help
 279           Say yes here to provide support for Semtech SX150-series I2C
 280           GPIO expanders. Compatible models include:
 281
 282           8 bits:  sx1508q
 283           16 bits: sx1509q
 284
 285 config GPIO_STMPE
 286         bool "STMPE GPIOs"
 287         depends on MFD_STMPE
 288         help
 289           This enables support for the GPIOs found on the STMPE I/O
 290           Expanders.
 291
 292 config GPIO_TC3589X
 293         bool "TC3589X GPIOs"
 294         depends on MFD_TC3589X
 295         help
 296           This enables support for the GPIOs found on the TC3589X
 297           I/O Expander.
 298
 299 config GPIO_TWL4030
 300         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 301         depends on TWL4030_CORE
 302         help
 303           Say yes here to access the GPIO signals of various multi-function
 304           power management chips from Texas Instruments.
 305
 306 config GPIO_WM831X
 307         tristate "WM831x GPIOs"
 308         depends on MFD_WM831X
 309         help
 310           Say yes here to access the GPIO signals of WM831x power management
 311           chips from Wolfson Microelectronics.
 312
 313 config GPIO_WM8350
 314         tristate "WM8350 GPIOs"
 315         depends on MFD_WM8350
 316         help
 317           Say yes here to access the GPIO signals of WM8350 power management
 318           chips from Wolfson Microelectronics.
 319
 320 config GPIO_WM8994
 321         tristate "WM8994 GPIOs"
 322         depends on MFD_WM8994
 323         help
 324           Say yes here to access the GPIO signals of WM8994 audio hub
 325           CODECs from Wolfson Microelectronics.
 326
 327 config GPIO_ADP5520
 328         tristate "GPIO Support for ADP5520 PMIC"
 329         depends on PMIC_ADP5520
 330         help
 331           This option enables support for on-chip GPIO found
 332           on Analog Devices ADP5520 PMICs.
 333
 334 config GPIO_ADP5588
 335         tristate "ADP5588 I2C GPIO expander"
 336         depends on I2C
 337         help
 338           This option enables support for 18 GPIOs found
 339           on Analog Devices ADP5588 GPIO Expanders.
 340
 341 config GPIO_ADP5588_IRQ
 342         bool "Interrupt controller support for ADP5588"
 343         depends on GPIO_ADP5588=y
 344         help
 345           Say yes here to enable the adp5588 to be used as an interrupt
 346           controller. It requires the driver to be built in the kernel.
 347
 348 comment "PCI GPIO expanders:"
 349
 350 config GPIO_CS5535
 351         tristate "AMD CS5535/CS5536 GPIO support"
 352         depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
 353         help
 354           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 355           can be used for quite a number of things.  The CS5535/6 is found on
 356           AMD Geode and Lemote Yeeloong devices.
 357
 358           If unsure, say N.
 359
 360 config GPIO_BT8XX
 361         tristate "BT8XX GPIO abuser"
 362         depends on PCI && VIDEO_BT848=n
 363         help
 364           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 365           as a cheap PCI GPIO card.
 366
 367           This chip can be found on Miro, Hauppauge and STB TV-cards.
 368
 369           The card needs to be physically altered for using it as a
 370           GPIO card. For more information on how to build a GPIO card
 371           from a BT8xx TV card, see the documentation file at
 372           Documentation/bt8xxgpio.txt
 373
 374           If unsure, say N.
 375
 376 config GPIO_LANGWELL
 377         bool "Intel Langwell/Penwell GPIO support"
 378         depends on PCI && X86
 379         help
 380           Say Y here to support Intel Langwell/Penwell GPIO.
 381
 382 config GPIO_PCH
 383         tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
 384         depends on PCI && X86
 385         help
 386           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 387           which is an IOH(Input/Output Hub) for x86 embedded processor.
 388           This driver can access PCH GPIO device.
 389
 390           This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
 391           Output Hub), ML7223.
 392           ML7223 IOH is for MP(Media Phone) use.
 393           ML7223 is companion chip for Intel Atom E6xx series.
 394           ML7223 is completely compatible for Intel EG20T PCH.
 395
 396 config GPIO_ML_IOH
 397         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 398         depends on PCI
 399         help
 400           ML7213 is companion chip for Intel Atom E6xx series.
 401           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 402           Hub) which is for IVI(In-Vehicle Infotainment) use.
 403           This driver can access the IOH's GPIO device.
 404
 405 config GPIO_TIMBERDALE
 406         bool "Support for timberdale GPIO IP"
 407         depends on MFD_TIMBERDALE && HAS_IOMEM
 408         ---help---
 409         Add support for the GPIO IP in the timberdale FPGA.
 410
 411 config GPIO_RDC321X
 412         tristate "RDC R-321x GPIO support"
 413         depends on PCI
 414         select MFD_SUPPORT
 415         select MFD_CORE
 416         select MFD_RDC321X
 417         help
 418           Support for the RDC R321x SoC GPIOs over southbridge
 419           PCI configuration space.
 420
 421 comment "SPI GPIO expanders:"
 422
 423 config GPIO_MAX7301
 424         tristate "Maxim MAX7301 GPIO expander"
 425         depends on SPI_MASTER
 426         select GPIO_MAX730X
 427         help
 428           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 429
 430 config GPIO_MCP23S08
 431         tristate "Microchip MCP23xxx I/O expander"
 432         depends on SPI_MASTER || I2C
 433         help
 434           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 435           I/O expanders.
 436           This provides a GPIO interface supporting inputs and outputs.
 437
 438 config GPIO_MC33880
 439         tristate "Freescale MC33880 high-side/low-side switch"
 440         depends on SPI_MASTER
 441         help
 442           SPI driver for Freescale MC33880 high-side/low-side switch.
 443           This provides GPIO interface supporting inputs and outputs.
 444
 445 config GPIO_74X164
 446         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 447         depends on SPI_MASTER
 448         help
 449           Platform driver for 74x164 compatible serial-in/parallel-out
 450           8-outputs shift registers. This driver can be used to provide access
 451           to more gpio outputs.
 452
 453 comment "AC97 GPIO expanders:"
 454
 455 config GPIO_UCB1400
 456         bool "Philips UCB1400 GPIO"
 457         depends on UCB1400_CORE
 458         help
 459           This enables support for the Philips UCB1400 GPIO pins.
 460           The UCB1400 is an AC97 audio codec.
 461
 462 comment "MODULbus GPIO expanders:"
 463
 464 config GPIO_JANZ_TTL
 465         tristate "Janz VMOD-TTL Digital IO Module"
 466         depends on MFD_JANZ_CMODIO
 467         help
 468           This enables support for the Janz VMOD-TTL Digital IO module.
 469           This driver provides support for driving the pins in output
 470           mode only. Input mode is not supported.
 471
 472 config GPIO_AB8500
 473         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 474         depends on AB8500_CORE && BROKEN
 475         help
 476           Select this to enable the AB8500 IC GPIO driver
 477
 478 config GPIO_TPS65910
 479         bool "TPS65910 GPIO"
 480         depends on MFD_TPS65910
 481         help
 482           Select this option to enable GPIO driver for the TPS65910
 483           chip family.
 484 endif