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