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