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_MPC5200
  99         def_bool y
 100         depends on PPC_MPC52xx
 101
 102 config GPIO_MPC8XXX
 103         bool "MPC512x/MPC8xxx GPIO support"
 104         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 105                    FSL_SOC_BOOKE || PPC_86xx
 106         help
 107           Say Y here if you're going to use hardware that connects to the
 108           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 109
 110 config GPIO_MSM_V1
 111         tristate "Qualcomm MSM GPIO v1"
 112         depends on GPIOLIB && ARCH_MSM
 113         help
 114           Say yes here to support the GPIO interface on ARM v6 based
 115           Qualcomm MSM chips.  Most of the pins on the MSM can be
 116           selected for GPIO, and are controlled by this driver.
 117
 118 config GPIO_MSM_V2
 119         tristate "Qualcomm MSM GPIO v2"
 120         depends on GPIOLIB && ARCH_MSM
 121         help
 122           Say yes here to support the GPIO interface on ARM v7 based
 123           Qualcomm MSM chips.  Most of the pins on the MSM can be
 124           selected for GPIO, and are controlled by this driver.
 125
 126 config GPIO_MXC
 127         def_bool y
 128         depends on ARCH_MXC
 129         select GPIO_GENERIC
 130         select GENERIC_IRQ_CHIP
 131
 132 config GPIO_MXS
 133         def_bool y
 134         depends on ARCH_MXS
 135         select GPIO_GENERIC
 136         select GENERIC_IRQ_CHIP
 137
 138 config GPIO_PL061
 139         bool "PrimeCell PL061 GPIO support"
 140         depends on ARM_AMBA
 141         help
 142           Say yes here to support the PrimeCell PL061 GPIO device
 143
 144 config GPIO_XILINX
 145         bool "Xilinx GPIO support"
 146         depends on PPC_OF || MICROBLAZE
 147         help
 148           Say yes here to support the Xilinx FPGA GPIO device
 149
 150 config GPIO_VR41XX
 151         tristate "NEC VR4100 series General-purpose I/O Uint support"
 152         depends on CPU_VR41XX
 153         help
 154           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 155
 156 config GPIO_SCH
 157         tristate "Intel SCH/TunnelCreek GPIO"
 158         depends on PCI && X86
 159         select MFD_CORE
 160         select LPC_SCH
 161         help
 162           Say yes here to support GPIO interface on Intel Poulsbo SCH
 163           or Intel Tunnel Creek processor.
 164           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 165           powered by the core power rail and are turned off during sleep
 166           modes (S3 and higher). The remaining four GPIOs are powered by
 167           the Intel SCH suspend power supply. These GPIOs remain
 168           active during S3. The suspend powered GPIOs can be used to wake the
 169           system from the Suspend-to-RAM state.
 170           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 171           core power rail and 9 from suspend power supply.
 172
 173 config GPIO_U300
 174         bool "ST-Ericsson U300 COH 901 335/571 GPIO"
 175         depends on GPIOLIB && ARCH_U300
 176         help
 177           Say yes here to support GPIO interface on ST-Ericsson U300.
 178           The names of the two IP block variants supported are
 179           COH 901 335 and COH 901 571/3. They contain 3, 5 or 7
 180           ports of 8 GPIO pins each.
 181
 182 config GPIO_VX855
 183         tristate "VIA VX855/VX875 GPIO"
 184         depends on PCI
 185         select MFD_CORE
 186         select MFD_VX855
 187         help
 188           Support access to the VX855/VX875 GPIO lines through the gpio library.
 189
 190           This driver provides common support for accessing the device,
 191           additional drivers must be enabled in order to use the
 192           functionality of the device.
 193
 194 comment "I2C GPIO expanders:"
 195
 196 config GPIO_MAX7300
 197         tristate "Maxim MAX7300 GPIO expander"
 198         depends on I2C
 199         select GPIO_MAX730X
 200         help
 201           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 202
 203 config GPIO_MAX732X
 204         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 205         depends on I2C
 206         help
 207           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 208           Port Expanders. Each IO port on these chips has a fixed role of
 209           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 210           Input and Output (designed by 'P'). The combinations are listed
 211           below:
 212
 213           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 214                         max7322 (4I4O), max7323 (4P4O)
 215
 216           16 bits:      max7324 (8I8O), max7325 (8P8O),
 217                         max7326 (4I12O), max7327 (4P12O)
 218
 219           Board setup code must specify the model to use, and the start
 220           number for these GPIOs.
 221
 222 config GPIO_MAX732X_IRQ
 223         bool "Interrupt controller support for MAX732x"
 224         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 225         help
 226           Say yes here to enable the max732x to be used as an interrupt
 227           controller. It requires the driver to be built in the kernel.
 228
 229 config GPIO_PCA953X
 230         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 231         depends on I2C
 232         help
 233           Say yes here to provide access to several register-oriented
 234           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 235           models include:
 236
 237           4 bits:       pca9536, pca9537
 238
 239           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 240                         tca6408
 241
 242           16 bits:      pca9535, pca9539, pca9555, tca6416
 243
 244 config GPIO_PCA953X_IRQ
 245         bool "Interrupt controller support for PCA953x"
 246         depends on GPIO_PCA953X=y
 247         help
 248           Say yes here to enable the pca953x to be used as an interrupt
 249           controller. It requires the driver to be built in the kernel.
 250
 251 config GPIO_PCF857X
 252         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 253         depends on I2C
 254         help
 255           Say yes here to provide access to most "quasi-bidirectional" I2C
 256           GPIO expanders used for additional digital outputs or inputs.
 257           Most of these parts are from NXP, though TI is a second source for
 258           some of them.  Compatible models include:
 259
 260           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 261                     pca9670, pca9672, pca9674, pca9674a,
 262                     max7328, max7329
 263
 264           16 bits:  pcf8575, pcf8575c, pca8575,
 265                     pca9671, pca9673, pca9675
 266
 267           Your board setup code will need to declare the expanders in
 268           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 269           can then be used from drivers and other kernel code, just like
 270           other GPIOs, but only accessible from task contexts.
 271
 272           This driver provides an in-kernel interface to those GPIOs using
 273           platform-neutral GPIO calls.
 274
 275 config GPIO_SX150X
 276         bool "Semtech SX150x I2C GPIO expander"
 277         depends on I2C=y
 278         default n
 279         help
 280           Say yes here to provide support for Semtech SX150-series I2C
 281           GPIO expanders. Compatible models include:
 282
 283           8 bits:  sx1508q
 284           16 bits: sx1509q
 285
 286 config GPIO_STMPE
 287         bool "STMPE GPIOs"
 288         depends on MFD_STMPE
 289         help
 290           This enables support for the GPIOs found on the STMPE I/O
 291           Expanders.
 292
 293 config GPIO_TC3589X
 294         bool "TC3589X GPIOs"
 295         depends on MFD_TC3589X
 296         help
 297           This enables support for the GPIOs found on the TC3589X
 298           I/O Expander.
 299
 300 config GPIO_TPS65912
 301         tristate "TI TPS65912 GPIO"
 302         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 303         help
 304           This driver supports TPS65912 gpio chip
 305
 306 config GPIO_TWL4030
 307         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 308         depends on TWL4030_CORE
 309         help
 310           Say yes here to access the GPIO signals of various multi-function
 311           power management chips from Texas Instruments.
 312
 313 config GPIO_WM831X
 314         tristate "WM831x GPIOs"
 315         depends on MFD_WM831X
 316         help
 317           Say yes here to access the GPIO signals of WM831x power management
 318           chips from Wolfson Microelectronics.
 319
 320 config GPIO_WM8350
 321         tristate "WM8350 GPIOs"
 322         depends on MFD_WM8350
 323         help
 324           Say yes here to access the GPIO signals of WM8350 power management
 325           chips from Wolfson Microelectronics.
 326
 327 config GPIO_WM8994
 328         tristate "WM8994 GPIOs"
 329         depends on MFD_WM8994
 330         help
 331           Say yes here to access the GPIO signals of WM8994 audio hub
 332           CODECs from Wolfson Microelectronics.
 333
 334 config GPIO_ADP5520
 335         tristate "GPIO Support for ADP5520 PMIC"
 336         depends on PMIC_ADP5520
 337         help
 338           This option enables support for on-chip GPIO found
 339           on Analog Devices ADP5520 PMICs.
 340
 341 config GPIO_ADP5588
 342         tristate "ADP5588 I2C GPIO expander"
 343         depends on I2C
 344         help
 345           This option enables support for 18 GPIOs found
 346           on Analog Devices ADP5588 GPIO Expanders.
 347
 348 config GPIO_ADP5588_IRQ
 349         bool "Interrupt controller support for ADP5588"
 350         depends on GPIO_ADP5588=y
 351         help
 352           Say yes here to enable the adp5588 to be used as an interrupt
 353           controller. It requires the driver to be built in the kernel.
 354
 355 comment "PCI GPIO expanders:"
 356
 357 config GPIO_CS5535
 358         tristate "AMD CS5535/CS5536 GPIO support"
 359         depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
 360         help
 361           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 362           can be used for quite a number of things.  The CS5535/6 is found on
 363           AMD Geode and Lemote Yeeloong devices.
 364
 365           If unsure, say N.
 366
 367 config GPIO_BT8XX
 368         tristate "BT8XX GPIO abuser"
 369         depends on PCI && VIDEO_BT848=n
 370         help
 371           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 372           as a cheap PCI GPIO card.
 373
 374           This chip can be found on Miro, Hauppauge and STB TV-cards.
 375
 376           The card needs to be physically altered for using it as a
 377           GPIO card. For more information on how to build a GPIO card
 378           from a BT8xx TV card, see the documentation file at
 379           Documentation/bt8xxgpio.txt
 380
 381           If unsure, say N.
 382
 383 config GPIO_LANGWELL
 384         bool "Intel Langwell/Penwell GPIO support"
 385         depends on PCI && X86
 386         help
 387           Say Y here to support Intel Langwell/Penwell GPIO.
 388
 389 config GPIO_PCH
 390         tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
 391         depends on PCI && X86
 392         select GENERIC_IRQ_CHIP
 393         help
 394           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 395           which is an IOH(Input/Output Hub) for x86 embedded processor.
 396           This driver can access PCH GPIO device.
 397
 398           This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
 399           Output Hub), ML7223.
 400           ML7223 IOH is for MP(Media Phone) use.
 401           ML7223 is companion chip for Intel Atom E6xx series.
 402           ML7223 is completely compatible for Intel EG20T PCH.
 403
 404 config GPIO_ML_IOH
 405         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 406         depends on PCI
 407         select GENERIC_IRQ_CHIP
 408         help
 409           ML7213 is companion chip for Intel Atom E6xx series.
 410           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 411           Hub) which is for IVI(In-Vehicle Infotainment) use.
 412           This driver can access the IOH's GPIO device.
 413
 414 config GPIO_TIMBERDALE
 415         bool "Support for timberdale GPIO IP"
 416         depends on MFD_TIMBERDALE && HAS_IOMEM
 417         ---help---
 418         Add support for the GPIO IP in the timberdale FPGA.
 419
 420 config GPIO_RDC321X
 421         tristate "RDC R-321x GPIO support"
 422         depends on PCI
 423         select MFD_CORE
 424         select MFD_RDC321X
 425         help
 426           Support for the RDC R321x SoC GPIOs over southbridge
 427           PCI configuration space.
 428
 429 comment "SPI GPIO expanders:"
 430
 431 config GPIO_MAX7301
 432         tristate "Maxim MAX7301 GPIO expander"
 433         depends on SPI_MASTER
 434         select GPIO_MAX730X
 435         help
 436           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 437
 438 config GPIO_MCP23S08
 439         tristate "Microchip MCP23xxx I/O expander"
 440         depends on SPI_MASTER || I2C
 441         help
 442           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 443           I/O expanders.
 444           This provides a GPIO interface supporting inputs and outputs.
 445
 446 config GPIO_MC33880
 447         tristate "Freescale MC33880 high-side/low-side switch"
 448         depends on SPI_MASTER
 449         help
 450           SPI driver for Freescale MC33880 high-side/low-side switch.
 451           This provides GPIO interface supporting inputs and outputs.
 452
 453 config GPIO_74X164
 454         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 455         depends on SPI_MASTER
 456         help
 457           Platform driver for 74x164 compatible serial-in/parallel-out
 458           8-outputs shift registers. This driver can be used to provide access
 459           to more gpio outputs.
 460
 461 comment "AC97 GPIO expanders:"
 462
 463 config GPIO_UCB1400
 464         bool "Philips UCB1400 GPIO"
 465         depends on UCB1400_CORE
 466         help
 467           This enables support for the Philips UCB1400 GPIO pins.
 468           The UCB1400 is an AC97 audio codec.
 469
 470 comment "MODULbus GPIO expanders:"
 471
 472 config GPIO_JANZ_TTL
 473         tristate "Janz VMOD-TTL Digital IO Module"
 474         depends on MFD_JANZ_CMODIO
 475         help
 476           This enables support for the Janz VMOD-TTL Digital IO module.
 477           This driver provides support for driving the pins in output
 478           mode only. Input mode is not supported.
 479
 480 config GPIO_AB8500
 481         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 482         depends on AB8500_CORE && BROKEN
 483         help
 484           Select this to enable the AB8500 IC GPIO driver
 485
 486 config GPIO_TPS65910
 487         bool "TPS65910 GPIO"
 488         depends on MFD_TPS65910
 489         help
 490           Select this option to enable GPIO driver for the TPS65910
 491           chip family.
 492 endif