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 && BROKEN
  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         depends on X86  # unconditional access to IO space.
  91         help
  92           Say yes here to support GPIO functionality of IT8761E super I/O chip.
  93
  94 config GPIO_EP93XX
  95         def_bool y
  96         depends on ARCH_EP93XX
  97         select GPIO_GENERIC
  98
  99 config GPIO_MPC5200
 100         def_bool y
 101         depends on PPC_MPC52xx
 102
 103 config GPIO_MPC8XXX
 104         bool "MPC512x/MPC8xxx GPIO support"
 105         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
 106                    FSL_SOC_BOOKE || PPC_86xx
 107         help
 108           Say Y here if you're going to use hardware that connects to the
 109           MPC512x/831x/834x/837x/8572/8610 GPIOs.
 110
 111 config GPIO_MSM_V1
 112         tristate "Qualcomm MSM GPIO v1"
 113         depends on GPIOLIB && ARCH_MSM
 114         help
 115           Say yes here to support the GPIO interface on ARM v6 based
 116           Qualcomm MSM chips.  Most of the pins on the MSM can be
 117           selected for GPIO, and are controlled by this driver.
 118
 119 config GPIO_MSM_V2
 120         tristate "Qualcomm MSM GPIO v2"
 121         depends on GPIOLIB && ARCH_MSM
 122         help
 123           Say yes here to support the GPIO interface on ARM v7 based
 124           Qualcomm MSM chips.  Most of the pins on the MSM can be
 125           selected for GPIO, and are controlled by this driver.
 126
 127 config GPIO_MXC
 128         def_bool y
 129         depends on ARCH_MXC
 130         select GPIO_GENERIC
 131         select GENERIC_IRQ_CHIP
 132
 133 config GPIO_MXS
 134         def_bool y
 135         depends on ARCH_MXS
 136         select GPIO_GENERIC
 137         select GENERIC_IRQ_CHIP
 138
 139 config GPIO_PL061
 140         bool "PrimeCell PL061 GPIO support"
 141         depends on ARM_AMBA
 142         select GENERIC_IRQ_CHIP
 143         help
 144           Say yes here to support the PrimeCell PL061 GPIO device
 145
 146 config GPIO_PXA
 147         bool "PXA GPIO support"
 148         depends on ARCH_PXA || ARCH_MMP
 149         help
 150           Say yes here to support the PXA GPIO device
 151
 152 config GPIO_STA2X11
 153         bool "STA2x11/ConneXt GPIO support"
 154         depends on MFD_STA2X11
 155         select GENERIC_IRQ_CHIP
 156         help
 157           Say yes here to support the STA2x11/ConneXt GPIO device.
 158           The GPIO module has 128 GPIO pins with alternate functions.
 159
 160 config GPIO_XILINX
 161         bool "Xilinx GPIO support"
 162         depends on PPC_OF || MICROBLAZE
 163         help
 164           Say yes here to support the Xilinx FPGA GPIO device
 165
 166 config GPIO_VR41XX
 167         tristate "NEC VR4100 series General-purpose I/O Uint support"
 168         depends on CPU_VR41XX
 169         help
 170           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 171
 172 config GPIO_SCH
 173         tristate "Intel SCH/TunnelCreek GPIO"
 174         depends on PCI && X86
 175         select MFD_CORE
 176         select LPC_SCH
 177         help
 178           Say yes here to support GPIO interface on Intel Poulsbo SCH
 179           or Intel Tunnel Creek processor.
 180           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 181           powered by the core power rail and are turned off during sleep
 182           modes (S3 and higher). The remaining four GPIOs are powered by
 183           the Intel SCH suspend power supply. These GPIOs remain
 184           active during S3. The suspend powered GPIOs can be used to wake the
 185           system from the Suspend-to-RAM state.
 186           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 187           core power rail and 9 from suspend power supply.
 188
 189 config GPIO_ICH
 190         tristate "Intel ICH GPIO"
 191         depends on PCI && X86
 192         select MFD_CORE
 193         select LPC_ICH
 194         help
 195           Say yes here to support the GPIO functionality of a number of Intel
 196           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
 197           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
 198           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
 199
 200           If unsure, say N.
 201
 202 config GPIO_VX855
 203         tristate "VIA VX855/VX875 GPIO"
 204         depends on PCI
 205         select MFD_CORE
 206         select MFD_VX855
 207         help
 208           Support access to the VX855/VX875 GPIO lines through the gpio library.
 209
 210           This driver provides common support for accessing the device,
 211           additional drivers must be enabled in order to use the
 212           functionality of the device.
 213
 214 config GPIO_GE_FPGA
 215         bool "GE FPGA based GPIO"
 216         depends on GE_FPGA
 217         help
 218           Support for common GPIO functionality provided on some GE Single Board
 219           Computers.
 220
 221           This driver provides basic support (configure as input or output, read
 222           and write pin state) for GPIO implemented in a number of GE single
 223           board computers.
 224
 225 comment "I2C GPIO expanders:"
 226
 227 config GPIO_MAX7300
 228         tristate "Maxim MAX7300 GPIO expander"
 229         depends on I2C
 230         select GPIO_MAX730X
 231         help
 232           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 233
 234 config GPIO_MAX732X
 235         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 236         depends on I2C
 237         help
 238           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 239           Port Expanders. Each IO port on these chips has a fixed role of
 240           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 241           Input and Output (designed by 'P'). The combinations are listed
 242           below:
 243
 244           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 245                         max7322 (4I4O), max7323 (4P4O)
 246
 247           16 bits:      max7324 (8I8O), max7325 (8P8O),
 248                         max7326 (4I12O), max7327 (4P12O)
 249
 250           Board setup code must specify the model to use, and the start
 251           number for these GPIOs.
 252
 253 config GPIO_MAX732X_IRQ
 254         bool "Interrupt controller support for MAX732x"
 255         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 256         help
 257           Say yes here to enable the max732x to be used as an interrupt
 258           controller. It requires the driver to be built in the kernel.
 259
 260 config GPIO_MC9S08DZ60
 261         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 262         depends on I2C && MACH_MX35_3DS
 263         help
 264           Select this to enable the MC9S08DZ60 GPIO driver
 265
 266 config GPIO_PCA953X
 267         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 268         depends on I2C
 269         help
 270           Say yes here to provide access to several register-oriented
 271           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 272           models include:
 273
 274           4 bits:       pca9536, pca9537
 275
 276           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 277                         tca6408
 278
 279           16 bits:      pca9535, pca9539, pca9555, tca6416
 280
 281 config GPIO_PCA953X_IRQ
 282         bool "Interrupt controller support for PCA953x"
 283         depends on GPIO_PCA953X=y
 284         help
 285           Say yes here to enable the pca953x to be used as an interrupt
 286           controller. It requires the driver to be built in the kernel.
 287
 288 config GPIO_PCF857X
 289         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 290         depends on I2C
 291         help
 292           Say yes here to provide access to most "quasi-bidirectional" I2C
 293           GPIO expanders used for additional digital outputs or inputs.
 294           Most of these parts are from NXP, though TI is a second source for
 295           some of them.  Compatible models include:
 296
 297           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 298                     pca9670, pca9672, pca9674, pca9674a,
 299                     max7328, max7329
 300
 301           16 bits:  pcf8575, pcf8575c, pca8575,
 302                     pca9671, pca9673, pca9675
 303
 304           Your board setup code will need to declare the expanders in
 305           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 306           can then be used from drivers and other kernel code, just like
 307           other GPIOs, but only accessible from task contexts.
 308
 309           This driver provides an in-kernel interface to those GPIOs using
 310           platform-neutral GPIO calls.
 311
 312 config GPIO_SX150X
 313         bool "Semtech SX150x I2C GPIO expander"
 314         depends on I2C=y
 315         default n
 316         help
 317           Say yes here to provide support for Semtech SX150-series I2C
 318           GPIO expanders. Compatible models include:
 319
 320           8 bits:  sx1508q
 321           16 bits: sx1509q
 322
 323 config GPIO_STMPE
 324         bool "STMPE GPIOs"
 325         depends on MFD_STMPE
 326         help
 327           This enables support for the GPIOs found on the STMPE I/O
 328           Expanders.
 329
 330 config GPIO_TC3589X
 331         bool "TC3589X GPIOs"
 332         depends on MFD_TC3589X
 333         help
 334           This enables support for the GPIOs found on the TC3589X
 335           I/O Expander.
 336
 337 config GPIO_TPS65912
 338         tristate "TI TPS65912 GPIO"
 339         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 340         help
 341           This driver supports TPS65912 gpio chip
 342
 343 config GPIO_TWL4030
 344         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 345         depends on TWL4030_CORE
 346         help
 347           Say yes here to access the GPIO signals of various multi-function
 348           power management chips from Texas Instruments.
 349
 350 config GPIO_WM831X
 351         tristate "WM831x GPIOs"
 352         depends on MFD_WM831X
 353         help
 354           Say yes here to access the GPIO signals of WM831x power management
 355           chips from Wolfson Microelectronics.
 356
 357 config GPIO_WM8350
 358         tristate "WM8350 GPIOs"
 359         depends on MFD_WM8350
 360         help
 361           Say yes here to access the GPIO signals of WM8350 power management
 362           chips from Wolfson Microelectronics.
 363
 364 config GPIO_WM8994
 365         tristate "WM8994 GPIOs"
 366         depends on MFD_WM8994
 367         help
 368           Say yes here to access the GPIO signals of WM8994 audio hub
 369           CODECs from Wolfson Microelectronics.
 370
 371 config GPIO_ADP5520
 372         tristate "GPIO Support for ADP5520 PMIC"
 373         depends on PMIC_ADP5520
 374         help
 375           This option enables support for on-chip GPIO found
 376           on Analog Devices ADP5520 PMICs.
 377
 378 config GPIO_ADP5588
 379         tristate "ADP5588 I2C GPIO expander"
 380         depends on I2C
 381         help
 382           This option enables support for 18 GPIOs found
 383           on Analog Devices ADP5588 GPIO Expanders.
 384
 385 config GPIO_ADP5588_IRQ
 386         bool "Interrupt controller support for ADP5588"
 387         depends on GPIO_ADP5588=y
 388         help
 389           Say yes here to enable the adp5588 to be used as an interrupt
 390           controller. It requires the driver to be built in the kernel.
 391
 392 comment "PCI GPIO expanders:"
 393
 394 config GPIO_CS5535
 395         tristate "AMD CS5535/CS5536 GPIO support"
 396         depends on PCI && X86 && MFD_CS5535
 397         help
 398           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 399           can be used for quite a number of things.  The CS5535/6 is found on
 400           AMD Geode and Lemote Yeeloong devices.
 401
 402           If unsure, say N.
 403
 404 config GPIO_BT8XX
 405         tristate "BT8XX GPIO abuser"
 406         depends on PCI && VIDEO_BT848=n
 407         help
 408           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 409           as a cheap PCI GPIO card.
 410
 411           This chip can be found on Miro, Hauppauge and STB TV-cards.
 412
 413           The card needs to be physically altered for using it as a
 414           GPIO card. For more information on how to build a GPIO card
 415           from a BT8xx TV card, see the documentation file at
 416           Documentation/bt8xxgpio.txt
 417
 418           If unsure, say N.
 419
 420 config GPIO_LANGWELL
 421         bool "Intel Langwell/Penwell GPIO support"
 422         depends on PCI && X86
 423         help
 424           Say Y here to support Intel Langwell/Penwell GPIO.
 425
 426 config GPIO_PCH
 427         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 428         depends on PCI && X86
 429         select GENERIC_IRQ_CHIP
 430         help
 431           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 432           which is an IOH(Input/Output Hub) for x86 embedded processor.
 433           This driver can access PCH GPIO device.
 434
 435           This driver also can be used for LAPIS Semiconductor IOH(Input/
 436           Output Hub), ML7223 and ML7831.
 437           ML7223 IOH is for MP(Media Phone) use.
 438           ML7831 IOH is for general purpose use.
 439           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 440           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 441
 442 config GPIO_ML_IOH
 443         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 444         depends on PCI
 445         select GENERIC_IRQ_CHIP
 446         help
 447           ML7213 is companion chip for Intel Atom E6xx series.
 448           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 449           Hub) which is for IVI(In-Vehicle Infotainment) use.
 450           This driver can access the IOH's GPIO device.
 451
 452 config GPIO_SODAVILLE
 453         bool "Intel Sodaville GPIO support"
 454         depends on X86 && PCI && OF
 455         select GPIO_GENERIC
 456         select GENERIC_IRQ_CHIP
 457         help
 458           Say Y here to support Intel Sodaville GPIO.
 459
 460 config GPIO_TIMBERDALE
 461         bool "Support for timberdale GPIO IP"
 462         depends on MFD_TIMBERDALE && HAS_IOMEM
 463         ---help---
 464         Add support for the GPIO IP in the timberdale FPGA.
 465
 466 config GPIO_RDC321X
 467         tristate "RDC R-321x GPIO support"
 468         depends on PCI
 469         select MFD_CORE
 470         select MFD_RDC321X
 471         help
 472           Support for the RDC R321x SoC GPIOs over southbridge
 473           PCI configuration space.
 474
 475 comment "SPI GPIO expanders:"
 476
 477 config GPIO_MAX7301
 478         tristate "Maxim MAX7301 GPIO expander"
 479         depends on SPI_MASTER
 480         select GPIO_MAX730X
 481         help
 482           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 483
 484 config GPIO_MCP23S08
 485         tristate "Microchip MCP23xxx I/O expander"
 486         depends on SPI_MASTER || I2C
 487         help
 488           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 489           I/O expanders.
 490           This provides a GPIO interface supporting inputs and outputs.
 491
 492 config GPIO_MC33880
 493         tristate "Freescale MC33880 high-side/low-side switch"
 494         depends on SPI_MASTER
 495         help
 496           SPI driver for Freescale MC33880 high-side/low-side switch.
 497           This provides GPIO interface supporting inputs and outputs.
 498
 499 config GPIO_74X164
 500         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 501         depends on SPI_MASTER
 502         help
 503           Platform driver for 74x164 compatible serial-in/parallel-out
 504           8-outputs shift registers. This driver can be used to provide access
 505           to more gpio outputs.
 506
 507 comment "AC97 GPIO expanders:"
 508
 509 config GPIO_UCB1400
 510         bool "Philips UCB1400 GPIO"
 511         depends on UCB1400_CORE
 512         help
 513           This enables support for the Philips UCB1400 GPIO pins.
 514           The UCB1400 is an AC97 audio codec.
 515
 516 comment "MODULbus GPIO expanders:"
 517
 518 config GPIO_JANZ_TTL
 519         tristate "Janz VMOD-TTL Digital IO Module"
 520         depends on MFD_JANZ_CMODIO
 521         help
 522           This enables support for the Janz VMOD-TTL Digital IO module.
 523           This driver provides support for driving the pins in output
 524           mode only. Input mode is not supported.
 525
 526 config GPIO_AB8500
 527         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 528         depends on AB8500_CORE && BROKEN
 529         help
 530           Select this to enable the AB8500 IC GPIO driver
 531
 532 config GPIO_TPS65910
 533         bool "TPS65910 GPIO"
 534         depends on MFD_TPS65910
 535         help
 536           Select this option to enable GPIO driver for the TPS65910
 537           chip family.
 538 endif