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_MSM_V1
 103         tristate "Qualcomm MSM GPIO v1"
 104         depends on GPIOLIB && ARCH_MSM
 105         help
 106           Say yes here to support the GPIO interface on ARM v6 based
 107           Qualcomm MSM chips.  Most of the pins on the MSM can be
 108           selected for GPIO, and are controlled by this driver.
 109
 110 config GPIO_MSM_V2
 111         tristate "Qualcomm MSM GPIO v2"
 112         depends on GPIOLIB && ARCH_MSM
 113         help
 114           Say yes here to support the GPIO interface on ARM v7 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_MXC
 119         def_bool y
 120         depends on ARCH_MXC
 121         select GPIO_GENERIC
 122         select GENERIC_IRQ_CHIP
 123
 124 config GPIO_MXS
 125         def_bool y
 126         depends on ARCH_MXS
 127         select GPIO_GENERIC
 128         select GENERIC_IRQ_CHIP
 129
 130 config GPIO_PL061
 131         bool "PrimeCell PL061 GPIO support"
 132         depends on ARM_AMBA
 133         help
 134           Say yes here to support the PrimeCell PL061 GPIO device
 135
 136 config GPIO_XILINX
 137         bool "Xilinx GPIO support"
 138         depends on PPC_OF || MICROBLAZE
 139         help
 140           Say yes here to support the Xilinx FPGA GPIO device
 141
 142 config GPIO_VR41XX
 143         tristate "NEC VR4100 series General-purpose I/O Uint support"
 144         depends on CPU_VR41XX
 145         help
 146           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
 147
 148 config GPIO_SCH
 149         tristate "Intel SCH/TunnelCreek GPIO"
 150         depends on PCI && X86
 151         select MFD_CORE
 152         select LPC_SCH
 153         help
 154           Say yes here to support GPIO interface on Intel Poulsbo SCH
 155           or Intel Tunnel Creek processor.
 156           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
 157           powered by the core power rail and are turned off during sleep
 158           modes (S3 and higher). The remaining four GPIOs are powered by
 159           the Intel SCH suspend power supply. These GPIOs remain
 160           active during S3. The suspend powered GPIOs can be used to wake the
 161           system from the Suspend-to-RAM state.
 162           The Intel Tunnel Creek processor has 5 GPIOs powered by the
 163           core power rail and 9 from suspend power supply.
 164
 165 config GPIO_VX855
 166         tristate "VIA VX855/VX875 GPIO"
 167         depends on MFD_SUPPORT && PCI
 168         select MFD_CORE
 169         select MFD_VX855
 170         help
 171           Support access to the VX855/VX875 GPIO lines through the gpio library.
 172
 173           This driver provides common support for accessing the device,
 174           additional drivers must be enabled in order to use the
 175           functionality of the device.
 176
 177 comment "I2C GPIO expanders:"
 178
 179 config GPIO_MAX7300
 180         tristate "Maxim MAX7300 GPIO expander"
 181         depends on I2C
 182         select GPIO_MAX730X
 183         help
 184           GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
 185
 186 config GPIO_MAX732X
 187         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
 188         depends on I2C
 189         help
 190           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
 191           Port Expanders. Each IO port on these chips has a fixed role of
 192           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
 193           Input and Output (designed by 'P'). The combinations are listed
 194           below:
 195
 196           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
 197                         max7322 (4I4O), max7323 (4P4O)
 198
 199           16 bits:      max7324 (8I8O), max7325 (8P8O),
 200                         max7326 (4I12O), max7327 (4P12O)
 201
 202           Board setup code must specify the model to use, and the start
 203           number for these GPIOs.
 204
 205 config GPIO_MAX732X_IRQ
 206         bool "Interrupt controller support for MAX732x"
 207         depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
 208         help
 209           Say yes here to enable the max732x to be used as an interrupt
 210           controller. It requires the driver to be built in the kernel.
 211
 212 config GPIO_PCA953X
 213         tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 214         depends on I2C
 215         help
 216           Say yes here to provide access to several register-oriented
 217           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
 218           models include:
 219
 220           4 bits:       pca9536, pca9537
 221
 222           8 bits:       max7310, pca9534, pca9538, pca9554, pca9557,
 223                         tca6408
 224
 225           16 bits:      pca9535, pca9539, pca9555, tca6416
 226
 227 config GPIO_PCA953X_IRQ
 228         bool "Interrupt controller support for PCA953x"
 229         depends on GPIO_PCA953X=y
 230         help
 231           Say yes here to enable the pca953x to be used as an interrupt
 232           controller. It requires the driver to be built in the kernel.
 233
 234 config GPIO_PCF857X
 235         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
 236         depends on I2C
 237         help
 238           Say yes here to provide access to most "quasi-bidirectional" I2C
 239           GPIO expanders used for additional digital outputs or inputs.
 240           Most of these parts are from NXP, though TI is a second source for
 241           some of them.  Compatible models include:
 242
 243           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
 244                     pca9670, pca9672, pca9674, pca9674a,
 245                     max7328, max7329
 246
 247           16 bits:  pcf8575, pcf8575c, pca8575,
 248                     pca9671, pca9673, pca9675
 249
 250           Your board setup code will need to declare the expanders in
 251           use, and assign numbers to the GPIOs they expose.  Those GPIOs
 252           can then be used from drivers and other kernel code, just like
 253           other GPIOs, but only accessible from task contexts.
 254
 255           This driver provides an in-kernel interface to those GPIOs using
 256           platform-neutral GPIO calls.
 257
 258 config GPIO_SX150X
 259         bool "Semtech SX150x I2C GPIO expander"
 260         depends on I2C=y
 261         default n
 262         help
 263           Say yes here to provide support for Semtech SX150-series I2C
 264           GPIO expanders. Compatible models include:
 265
 266           8 bits:  sx1508q
 267           16 bits: sx1509q
 268
 269 config GPIO_STMPE
 270         bool "STMPE GPIOs"
 271         depends on MFD_STMPE
 272         help
 273           This enables support for the GPIOs found on the STMPE I/O
 274           Expanders.
 275
 276 config GPIO_TC3589X
 277         bool "TC3589X GPIOs"
 278         depends on MFD_TC3589X
 279         help
 280           This enables support for the GPIOs found on the TC3589X
 281           I/O Expander.
 282
 283 config GPIO_TPS65912
 284         tristate "TI TPS65912 GPIO"
 285         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
 286         help
 287           This driver supports TPS65912 gpio chip
 288
 289 config GPIO_TWL4030
 290         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
 291         depends on TWL4030_CORE
 292         help
 293           Say yes here to access the GPIO signals of various multi-function
 294           power management chips from Texas Instruments.
 295
 296 config GPIO_WM831X
 297         tristate "WM831x GPIOs"
 298         depends on MFD_WM831X
 299         help
 300           Say yes here to access the GPIO signals of WM831x power management
 301           chips from Wolfson Microelectronics.
 302
 303 config GPIO_WM8350
 304         tristate "WM8350 GPIOs"
 305         depends on MFD_WM8350
 306         help
 307           Say yes here to access the GPIO signals of WM8350 power management
 308           chips from Wolfson Microelectronics.
 309
 310 config GPIO_WM8994
 311         tristate "WM8994 GPIOs"
 312         depends on MFD_WM8994
 313         help
 314           Say yes here to access the GPIO signals of WM8994 audio hub
 315           CODECs from Wolfson Microelectronics.
 316
 317 config GPIO_ADP5520
 318         tristate "GPIO Support for ADP5520 PMIC"
 319         depends on PMIC_ADP5520
 320         help
 321           This option enables support for on-chip GPIO found
 322           on Analog Devices ADP5520 PMICs.
 323
 324 config GPIO_ADP5588
 325         tristate "ADP5588 I2C GPIO expander"
 326         depends on I2C
 327         help
 328           This option enables support for 18 GPIOs found
 329           on Analog Devices ADP5588 GPIO Expanders.
 330
 331 config GPIO_ADP5588_IRQ
 332         bool "Interrupt controller support for ADP5588"
 333         depends on GPIO_ADP5588=y
 334         help
 335           Say yes here to enable the adp5588 to be used as an interrupt
 336           controller. It requires the driver to be built in the kernel.
 337
 338 comment "PCI GPIO expanders:"
 339
 340 config GPIO_CS5535
 341         tristate "AMD CS5535/CS5536 GPIO support"
 342         depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
 343         help
 344           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
 345           can be used for quite a number of things.  The CS5535/6 is found on
 346           AMD Geode and Lemote Yeeloong devices.
 347
 348           If unsure, say N.
 349
 350 config GPIO_BT8XX
 351         tristate "BT8XX GPIO abuser"
 352         depends on PCI && VIDEO_BT848=n
 353         help
 354           The BT8xx frame grabber chip has 24 GPIO pins than can be abused
 355           as a cheap PCI GPIO card.
 356
 357           This chip can be found on Miro, Hauppauge and STB TV-cards.
 358
 359           The card needs to be physically altered for using it as a
 360           GPIO card. For more information on how to build a GPIO card
 361           from a BT8xx TV card, see the documentation file at
 362           Documentation/bt8xxgpio.txt
 363
 364           If unsure, say N.
 365
 366 config GPIO_LANGWELL
 367         bool "Intel Langwell/Penwell GPIO support"
 368         depends on PCI && X86
 369         help
 370           Say Y here to support Intel Langwell/Penwell GPIO.
 371
 372 config GPIO_PCH
 373         tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
 374         depends on PCI && X86
 375         help
 376           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
 377           which is an IOH(Input/Output Hub) for x86 embedded processor.
 378           This driver can access PCH GPIO device.
 379
 380           This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
 381           Output Hub), ML7223.
 382           ML7223 IOH is for MP(Media Phone) use.
 383           ML7223 is companion chip for Intel Atom E6xx series.
 384           ML7223 is completely compatible for Intel EG20T PCH.
 385
 386 config GPIO_ML_IOH
 387         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
 388         depends on PCI
 389         help
 390           ML7213 is companion chip for Intel Atom E6xx series.
 391           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
 392           Hub) which is for IVI(In-Vehicle Infotainment) use.
 393           This driver can access the IOH's GPIO device.
 394
 395 config GPIO_TIMBERDALE
 396         bool "Support for timberdale GPIO IP"
 397         depends on MFD_TIMBERDALE && HAS_IOMEM
 398         ---help---
 399         Add support for the GPIO IP in the timberdale FPGA.
 400
 401 config GPIO_RDC321X
 402         tristate "RDC R-321x GPIO support"
 403         depends on PCI
 404         select MFD_SUPPORT
 405         select MFD_CORE
 406         select MFD_RDC321X
 407         help
 408           Support for the RDC R321x SoC GPIOs over southbridge
 409           PCI configuration space.
 410
 411 comment "SPI GPIO expanders:"
 412
 413 config GPIO_MAX7301
 414         tristate "Maxim MAX7301 GPIO expander"
 415         depends on SPI_MASTER
 416         select GPIO_MAX730X
 417         help
 418           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
 419
 420 config GPIO_MCP23S08
 421         tristate "Microchip MCP23xxx I/O expander"
 422         depends on SPI_MASTER || I2C
 423         help
 424           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 425           I/O expanders.
 426           This provides a GPIO interface supporting inputs and outputs.
 427
 428 config GPIO_MC33880
 429         tristate "Freescale MC33880 high-side/low-side switch"
 430         depends on SPI_MASTER
 431         help
 432           SPI driver for Freescale MC33880 high-side/low-side switch.
 433           This provides GPIO interface supporting inputs and outputs.
 434
 435 config GPIO_74X164
 436         tristate "74x164 serial-in/parallel-out 8-bits shift register"
 437         depends on SPI_MASTER
 438         help
 439           Platform driver for 74x164 compatible serial-in/parallel-out
 440           8-outputs shift registers. This driver can be used to provide access
 441           to more gpio outputs.
 442
 443 comment "AC97 GPIO expanders:"
 444
 445 config GPIO_UCB1400
 446         bool "Philips UCB1400 GPIO"
 447         depends on UCB1400_CORE
 448         help
 449           This enables support for the Philips UCB1400 GPIO pins.
 450           The UCB1400 is an AC97 audio codec.
 451
 452 comment "MODULbus GPIO expanders:"
 453
 454 config GPIO_JANZ_TTL
 455         tristate "Janz VMOD-TTL Digital IO Module"
 456         depends on MFD_JANZ_CMODIO
 457         help
 458           This enables support for the Janz VMOD-TTL Digital IO module.
 459           This driver provides support for driving the pins in output
 460           mode only. Input mode is not supported.
 461
 462 config GPIO_AB8500
 463         bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
 464         depends on AB8500_CORE && BROKEN
 465         help
 466           Select this to enable the AB8500 IC GPIO driver
 467
 468 config GPIO_TPS65910
 469         bool "TPS65910 GPIO"
 470         depends on MFD_TPS65910
 471         help
 472           Select this option to enable GPIO driver for the TPS65910
 473           chip family.
 474 endif