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_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 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_MC9S08DZ60
 229         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
 230         depends on I2C && MACH_MX35_3DS
 231         help
 232           Select this to enable the MC9S08DZ60 GPIO driver
 233
 234 config GPIO_PCA953X
 235         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 236         depends on I2C
 237         help
 238           Say yes here to provide access to several register-oriented
 239           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 240           models include:
 241
 242           4 bits:       pca9536, pca9537
 243
 244           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 245                         tca6408
 246
 247           16 bits:      pca9535, pca9539, pca9555, tca6416
 248
 249 config GPIO_PCA953X_IRQ
 250         bool "Interrupt controller support for PCA953x"
 251         depends on GPIO_PCA953X=y
 252         help
 253           Say yes here to enable the pca953x to be used as an interrupt
 254           controller. It requires the driver to be built in the kernel.
 255
 256 config GPIO_PCF857X
 257         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 258         depends on I2C
 259         help
 260           Say yes here to provide access to most "quasi-bidirectional" I2C
 261           GPIO expanders used for additional digital outputs or inputs.
 262           Most of these parts are from NXP, though TI is a second source for
 263           some of them.  Compatible models include:
 264
 265           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 266                     pca9670, pca9672, pca9674, pca9674a,
 267                     max7328, max7329
 268
 269           16 bits:  pcf8575, pcf8575c, pca8575,
 270                     pca9671, pca9673, pca9675
 271
 272           Your board setup code will need to declare the expanders in
 273           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 274           can then be used from drivers and other kernel code, just like
 275           other GPIOs, but only accessible from task contexts.
 276
 277           This driver provides an in-kernel interface to those GPIOs using
 278           platform-neutral GPIO calls.
 279
 280 config GPIO_SX150X
 281         bool "Semtech SX150x I2C GPIO expander"
 282         depends on I2C=y
 283         default n
 284         help
 285           Say yes here to provide support for Semtech SX150-series I2C
 286           GPIO expanders. Compatible models include:
 287
 288           8 bits:  sx1508q
 289           16 bits: sx1509q
 290
 291 config GPIO_STMPE
 292         bool "STMPE GPIOs"
 293         depends on MFD_STMPE
 294         help
 295           This enables support for the GPIOs found on the STMPE I/O
 296           Expanders.
 297
 298 config GPIO_TC3589X
 299         bool "TC3589X GPIOs"
 300         depends on MFD_TC3589X
 301         help
 302           This enables support for the GPIOs found on the TC3589X
 303           I/O Expander.
 304
 305 config GPIO_TPS65912
 306         tristate "TI TPS65912 GPIO"
 307         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 308         help
 309           This driver supports TPS65912 gpio chip
 310
 311 config GPIO_TWL4030
 312         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 313         depends on TWL4030_CORE
 314         help
 315           Say yes here to access the GPIO signals of various multi-function
 316           power management chips from Texas Instruments.
 317
 318 config GPIO_WM831X
 319         tristate "WM831x GPIOs"
 320         depends on MFD_WM831X
 321         help
 322           Say yes here to access the GPIO signals of WM831x power management
 323           chips from Wolfson Microelectronics.
 324
 325 config GPIO_WM8350
 326         tristate "WM8350 GPIOs"
 327         depends on MFD_WM8350
 328         help
 329           Say yes here to access the GPIO signals of WM8350 power management
 330           chips from Wolfson Microelectronics.
 331
 332 config GPIO_WM8994
 333         tristate "WM8994 GPIOs"
 334         depends on MFD_WM8994
 335         help
 336           Say yes here to access the GPIO signals of WM8994 audio hub
 337           CODECs from Wolfson Microelectronics.
 338
 339 config GPIO_ADP5520
 340         tristate "GPIO Support for ADP5520 PMIC"
 341         depends on PMIC_ADP5520
 342         help
 343           This option enables support for on-chip GPIO found
 344           on Analog Devices ADP5520 PMICs.
 345
 346 config GPIO_ADP5588
 347         tristate "ADP5588 I2C GPIO expander"
 348         depends on I2C
 349         help
 350           This option enables support for 18 GPIOs found
 351           on Analog Devices ADP5588 GPIO Expanders.
 352
 353 config GPIO_ADP5588_IRQ
 354         bool "Interrupt controller support for ADP5588"
 355         depends on GPIO_ADP5588=y
 356         help
 357           Say yes here to enable the adp5588 to be used as an interrupt
 358           controller. It requires the driver to be built in the kernel.
 359
 360 comment "PCI GPIO expanders:"
 361
 362 config GPIO_CS5535
 363         tristate "AMD CS5535/CS5536 GPIO support"
 364         depends on PCI && X86 && MFD_CS5535
 365         help
 366           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 367           can be used for quite a number of things.  The CS5535/6 is found on
 368           AMD Geode and Lemote Yeeloong devices.
 369
 370           If unsure, say N.
 371
 372 config GPIO_BT8XX
 373         tristate "BT8XX GPIO abuser"
 374         depends on PCI && VIDEO_BT848=n
 375         help
 376           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 377           as a cheap PCI GPIO card.
 378
 379           This chip can be found on Miro, Hauppauge and STB TV-cards.
 380
 381           The card needs to be physically altered for using it as a
 382           GPIO card. For more information on how to build a GPIO card
 383           from a BT8xx TV card, see the documentation file at
 384           Documentation/bt8xxgpio.txt
 385
 386           If unsure, say N.
 387
 388 config GPIO_LANGWELL
 389         bool "Intel Langwell/Penwell GPIO support"
 390         depends on PCI && X86
 391         help
 392           Say Y here to support Intel Langwell/Penwell GPIO.
 393
 394 config GPIO_PCH
 395         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
 396         depends on PCI && X86
 397         select GENERIC_IRQ_CHIP
 398         help
 399           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 400           which is an IOH(Input/Output Hub) for x86 embedded processor.
 401           This driver can access PCH GPIO device.
 402
 403           This driver also can be used for LAPIS Semiconductor IOH(Input/
 404           Output Hub), ML7223 and ML7831.
 405           ML7223 IOH is for MP(Media Phone) use.
 406           ML7831 IOH is for general purpose use.
 407           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 408           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 409
 410 config GPIO_ML_IOH
 411         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 412         depends on PCI
 413         select GENERIC_IRQ_CHIP
 414         help
 415           ML7213 is companion chip for Intel Atom E6xx series.
 416           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 417           Hub) which is for IVI(In-Vehicle Infotainment) use.
 418           This driver can access the IOH's GPIO device.
 419
 420 config GPIO_SODAVILLE
 421         bool "Intel Sodaville GPIO support"
 422         depends on X86 && PCI && OF && BROKEN
 423         select GPIO_GENERIC
 424         select GENERIC_IRQ_CHIP
 425         help
 426           Say Y here to support Intel Sodaville GPIO.
 427
 428 config GPIO_TIMBERDALE
 429         bool "Support for timberdale GPIO IP"
 430         depends on MFD_TIMBERDALE && HAS_IOMEM
 431         ---help---
 432         Add support for the GPIO IP in the timberdale FPGA.
 433
 434 config GPIO_RDC321X
 435         tristate "RDC R-321x GPIO support"
 436         depends on PCI
 437         select MFD_CORE
 438         select MFD_RDC321X
 439         help
 440           Support for the RDC R321x SoC GPIOs over southbridge
 441           PCI configuration space.
 442
 443 comment "SPI GPIO expanders:"
 444
 445 config GPIO_MAX7301
 446         tristate "Maxim MAX7301 GPIO expander"
 447         depends on SPI_MASTER
 448         select GPIO_MAX730X
 449         help
 450           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 451
 452 config GPIO_MCP23S08
 453         tristate "Microchip MCP23xxx I/O expander"
 454         depends on SPI_MASTER || I2C
 455         help
 456           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 457           I/O expanders.
 458           This provides a GPIO interface supporting inputs and outputs.
 459
 460 config GPIO_MC33880
 461         tristate "Freescale MC33880 high-side/low-side switch"
 462         depends on SPI_MASTER
 463         help
 464           SPI driver for Freescale MC33880 high-side/low-side switch.
 465           This provides GPIO interface supporting inputs and outputs.
 466
 467 config GPIO_74X164
 468         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 469         depends on SPI_MASTER
 470         help
 471           Platform driver for 74x164 compatible serial-in/parallel-out
 472           8-outputs shift registers. This driver can be used to provide access
 473           to more gpio outputs.
 474
 475 comment "AC97 GPIO expanders:"
 476
 477 config GPIO_UCB1400
 478         bool "Philips UCB1400 GPIO"
 479         depends on UCB1400_CORE
 480         help
 481           This enables support for the Philips UCB1400 GPIO pins.
 482           The UCB1400 is an AC97 audio codec.
 483
 484 comment "MODULbus GPIO expanders:"
 485
 486 config GPIO_JANZ_TTL
 487         tristate "Janz VMOD-TTL Digital IO Module"
 488         depends on MFD_JANZ_CMODIO
 489         help
 490           This enables support for the Janz VMOD-TTL Digital IO module.
 491           This driver provides support for driving the pins in output
 492           mode only. Input mode is not supported.
 493
 494 config GPIO_AB8500
 495         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 496         depends on AB8500_CORE && BROKEN
 497         help
 498           Select this to enable the AB8500 IC GPIO driver
 499
 500 config GPIO_TPS65910
 501         bool "TPS65910 GPIO"
 502         depends on MFD_TPS65910
 503         help
 504           Select this option to enable GPIO driver for the TPS65910
 505           chip family.
 506 endif