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