1# 2# GPIO infrastructure and drivers 3# 4 5config ARCH_HAVE_CUSTOM_GPIO_H 6 bool 7 help 8 Selecting this config option from the architecture Kconfig allows 9 the architecture to provide a custom asm/gpio.h implementation 10 overriding the default implementations. New uses of this are 11 strongly discouraged. 12 13config ARCH_WANT_OPTIONAL_GPIOLIB 14 bool 15 help 16 Select this config option from the architecture Kconfig, if 17 it is possible to use gpiolib on the architecture, but let the 18 user decide whether to actually build it or not. 19 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does 20 not depend on GPIOs being available, but rather let the user 21 decide whether he needs it or not. 22 23config ARCH_REQUIRE_GPIOLIB 24 bool 25 select GPIOLIB 26 help 27 Platforms select gpiolib if they use this infrastructure 28 for all their GPIOs, usually starting with ones integrated 29 into SOC processors. 30 Selecting this from the architecture code will cause the gpiolib 31 code to always get built in. 32 33 34 35menuconfig GPIOLIB 36 bool "GPIO Support" 37 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 38 select GENERIC_GPIO 39 help 40 This enables GPIO support through the generic GPIO library. 41 You only need to enable this, if you also want to enable 42 one or more of the GPIO drivers below. 43 44 If unsure, say N. 45 46if GPIOLIB 47 48config OF_GPIO 49 def_bool y 50 depends on OF && !SPARC 51 52config DEBUG_GPIO 53 bool "Debug GPIO calls" 54 depends on DEBUG_KERNEL 55 help 56 Say Y here to add some extra checks and diagnostics to GPIO calls. 57 These checks help ensure that GPIOs have been properly initialized 58 before they are used, and that sleeping calls are not made from 59 non-sleeping contexts. They can make bitbanged serial protocols 60 slower. The diagnostics help catch the type of setup errors 61 that are most common when setting up new platforms or boards. 62 63config GPIO_SYSFS 64 bool "/sys/class/gpio/... (sysfs interface)" 65 depends on SYSFS && EXPERIMENTAL 66 help 67 Say Y here to add a sysfs interface for GPIOs. 68 69 This is mostly useful to work around omissions in a system's 70 kernel support. Those are common in custom and semicustom 71 hardware assembled using standard kernels with a minimum of 72 custom patches. In those cases, userspace code may import 73 a given GPIO from the kernel, if no kernel driver requested it. 74 75 Kernel drivers may also request that a particular GPIO be 76 exported to userspace; this can be useful when debugging. 77 78config GPIO_GENERIC 79 tristate 80 81# put drivers in the right section, in alphabetical order 82 83config GPIO_DA9052 84 tristate "Dialog DA9052 GPIO" 85 depends on PMIC_DA9052 && BROKEN 86 help 87 Say yes here to enable the GPIO driver for the DA9052 chip. 88 89config GPIO_MAX730X 90 tristate 91 92comment "Memory mapped GPIO drivers:" 93 94config GPIO_GENERIC_PLATFORM 95 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 96 select GPIO_GENERIC 97 help 98 Say yes here to support basic platform_device memory-mapped GPIO controllers. 99 100config GPIO_IT8761E 101 tristate "IT8761E GPIO support" 102 depends on X86 # unconditional access to IO space. 103 help 104 Say yes here to support GPIO functionality of IT8761E super I/O chip. 105 106config GPIO_EP93XX 107 def_bool y 108 depends on ARCH_EP93XX 109 select GPIO_GENERIC 110 111config GPIO_MPC5200 112 def_bool y 113 depends on PPC_MPC52xx 114 115config GPIO_MPC8XXX 116 bool "MPC512x/MPC8xxx GPIO support" 117 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 118 FSL_SOC_BOOKE || PPC_86xx 119 help 120 Say Y here if you're going to use hardware that connects to the 121 MPC512x/831x/834x/837x/8572/8610 GPIOs. 122 123config GPIO_MSM_V1 124 tristate "Qualcomm MSM GPIO v1" 125 depends on GPIOLIB && ARCH_MSM 126 help 127 Say yes here to support the GPIO interface on ARM v6 based 128 Qualcomm MSM chips. Most of the pins on the MSM can be 129 selected for GPIO, and are controlled by this driver. 130 131config GPIO_MSM_V2 132 tristate "Qualcomm MSM GPIO v2" 133 depends on GPIOLIB && ARCH_MSM 134 help 135 Say yes here to support the GPIO interface on ARM v7 based 136 Qualcomm MSM chips. Most of the pins on the MSM can be 137 selected for GPIO, and are controlled by this driver. 138 139config GPIO_MXC 140 def_bool y 141 depends on ARCH_MXC 142 select GPIO_GENERIC 143 select GENERIC_IRQ_CHIP 144 145config GPIO_MXS 146 def_bool y 147 depends on ARCH_MXS 148 select GPIO_GENERIC 149 select GENERIC_IRQ_CHIP 150 151config GPIO_PL061 152 bool "PrimeCell PL061 GPIO support" 153 depends on ARM_AMBA 154 select GENERIC_IRQ_CHIP 155 help 156 Say yes here to support the PrimeCell PL061 GPIO device 157 158config GPIO_PXA 159 bool "PXA GPIO support" 160 depends on ARCH_PXA || ARCH_MMP 161 help 162 Say yes here to support the PXA GPIO device 163 164config GPIO_XILINX 165 bool "Xilinx GPIO support" 166 depends on PPC_OF || MICROBLAZE 167 help 168 Say yes here to support the Xilinx FPGA GPIO device 169 170config GPIO_VR41XX 171 tristate "NEC VR4100 series General-purpose I/O Uint support" 172 depends on CPU_VR41XX 173 help 174 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 175 176config GPIO_SCH 177 tristate "Intel SCH/TunnelCreek GPIO" 178 depends on PCI && X86 179 select MFD_CORE 180 select LPC_SCH 181 help 182 Say yes here to support GPIO interface on Intel Poulsbo SCH 183 or Intel Tunnel Creek processor. 184 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 185 powered by the core power rail and are turned off during sleep 186 modes (S3 and higher). The remaining four GPIOs are powered by 187 the Intel SCH suspend power supply. These GPIOs remain 188 active during S3. The suspend powered GPIOs can be used to wake the 189 system from the Suspend-to-RAM state. 190 The Intel Tunnel Creek processor has 5 GPIOs powered by the 191 core power rail and 9 from suspend power supply. 192 193config GPIO_VX855 194 tristate "VIA VX855/VX875 GPIO" 195 depends on PCI 196 select MFD_CORE 197 select MFD_VX855 198 help 199 Support access to the VX855/VX875 GPIO lines through the gpio library. 200 201 This driver provides common support for accessing the device, 202 additional drivers must be enabled in order to use the 203 functionality of the device. 204 205config GPIO_GE_FPGA 206 bool "GE FPGA based GPIO" 207 depends on GE_FPGA 208 help 209 Support for common GPIO functionality provided on some GE Single Board 210 Computers. 211 212 This driver provides basic support (configure as input or output, read 213 and write pin state) for GPIO implemented in a number of GE single 214 board computers. 215 216comment "I2C GPIO expanders:" 217 218config GPIO_MAX7300 219 tristate "Maxim MAX7300 GPIO expander" 220 depends on I2C 221 select GPIO_MAX730X 222 help 223 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 224 225config GPIO_MAX732X 226 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 227 depends on I2C 228 help 229 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 230 Port Expanders. Each IO port on these chips has a fixed role of 231 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 232 Input and Output (designed by 'P'). The combinations are listed 233 below: 234 235 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 236 max7322 (4I4O), max7323 (4P4O) 237 238 16 bits: max7324 (8I8O), max7325 (8P8O), 239 max7326 (4I12O), max7327 (4P12O) 240 241 Board setup code must specify the model to use, and the start 242 number for these GPIOs. 243 244config GPIO_MAX732X_IRQ 245 bool "Interrupt controller support for MAX732x" 246 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 247 help 248 Say yes here to enable the max732x to be used as an interrupt 249 controller. It requires the driver to be built in the kernel. 250 251config GPIO_MC9S08DZ60 252 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 253 depends on I2C && MACH_MX35_3DS 254 help 255 Select this to enable the MC9S08DZ60 GPIO driver 256 257config GPIO_PCA953X 258 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 259 depends on I2C 260 help 261 Say yes here to provide access to several register-oriented 262 SMBus I/O expanders, made mostly by NXP or TI. Compatible 263 models include: 264 265 4 bits: pca9536, pca9537 266 267 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 268 pca9556, pca9557, pca9574, tca6408 269 270 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 271 tca6416 272 273config GPIO_PCA953X_IRQ 274 bool "Interrupt controller support for PCA953x" 275 depends on GPIO_PCA953X=y 276 help 277 Say yes here to enable the pca953x to be used as an interrupt 278 controller. It requires the driver to be built in the kernel. 279 280config GPIO_PCF857X 281 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 282 depends on I2C 283 help 284 Say yes here to provide access to most "quasi-bidirectional" I2C 285 GPIO expanders used for additional digital outputs or inputs. 286 Most of these parts are from NXP, though TI is a second source for 287 some of them. Compatible models include: 288 289 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 290 pca9670, pca9672, pca9674, pca9674a, 291 max7328, max7329 292 293 16 bits: pcf8575, pcf8575c, pca8575, 294 pca9671, pca9673, pca9675 295 296 Your board setup code will need to declare the expanders in 297 use, and assign numbers to the GPIOs they expose. Those GPIOs 298 can then be used from drivers and other kernel code, just like 299 other GPIOs, but only accessible from task contexts. 300 301 This driver provides an in-kernel interface to those GPIOs using 302 platform-neutral GPIO calls. 303 304config GPIO_RC5T583 305 bool "RICOH RC5T583 GPIO" 306 depends on MFD_RC5T583 307 help 308 Select this option to enable GPIO driver for the Ricoh RC5T583 309 chip family. 310 This driver provides the support for driving/reading the gpio pins 311 of RC5T583 device through standard gpio library. 312 313config GPIO_SX150X 314 bool "Semtech SX150x I2C GPIO expander" 315 depends on I2C=y 316 default n 317 help 318 Say yes here to provide support for Semtech SX150-series I2C 319 GPIO expanders. Compatible models include: 320 321 8 bits: sx1508q 322 16 bits: sx1509q 323 324config GPIO_STMPE 325 bool "STMPE GPIOs" 326 depends on MFD_STMPE 327 help 328 This enables support for the GPIOs found on the STMPE I/O 329 Expanders. 330 331config GPIO_TC3589X 332 bool "TC3589X GPIOs" 333 depends on MFD_TC3589X 334 help 335 This enables support for the GPIOs found on the TC3589X 336 I/O Expander. 337 338config GPIO_TPS65912 339 tristate "TI TPS65912 GPIO" 340 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 341 help 342 This driver supports TPS65912 gpio chip 343 344config GPIO_TWL4030 345 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 346 depends on TWL4030_CORE 347 help 348 Say yes here to access the GPIO signals of various multi-function 349 power management chips from Texas Instruments. 350 351config GPIO_WM831X 352 tristate "WM831x GPIOs" 353 depends on MFD_WM831X 354 help 355 Say yes here to access the GPIO signals of WM831x power management 356 chips from Wolfson Microelectronics. 357 358config GPIO_WM8350 359 tristate "WM8350 GPIOs" 360 depends on MFD_WM8350 361 help 362 Say yes here to access the GPIO signals of WM8350 power management 363 chips from Wolfson Microelectronics. 364 365config GPIO_WM8994 366 tristate "WM8994 GPIOs" 367 depends on MFD_WM8994 368 help 369 Say yes here to access the GPIO signals of WM8994 audio hub 370 CODECs from Wolfson Microelectronics. 371 372config GPIO_ADP5520 373 tristate "GPIO Support for ADP5520 PMIC" 374 depends on PMIC_ADP5520 375 help 376 This option enables support for on-chip GPIO found 377 on Analog Devices ADP5520 PMICs. 378 379config GPIO_ADP5588 380 tristate "ADP5588 I2C GPIO expander" 381 depends on I2C 382 help 383 This option enables support for 18 GPIOs found 384 on Analog Devices ADP5588 GPIO Expanders. 385 386config GPIO_ADP5588_IRQ 387 bool "Interrupt controller support for ADP5588" 388 depends on GPIO_ADP5588=y 389 help 390 Say yes here to enable the adp5588 to be used as an interrupt 391 controller. It requires the driver to be built in the kernel. 392 393comment "PCI GPIO expanders:" 394 395config GPIO_CS5535 396 tristate "AMD CS5535/CS5536 GPIO support" 397 depends on PCI && X86 && MFD_CS5535 398 help 399 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 400 can be used for quite a number of things. The CS5535/6 is found on 401 AMD Geode and Lemote Yeeloong devices. 402 403 If unsure, say N. 404 405config GPIO_BT8XX 406 tristate "BT8XX GPIO abuser" 407 depends on PCI && VIDEO_BT848=n 408 help 409 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 410 as a cheap PCI GPIO card. 411 412 This chip can be found on Miro, Hauppauge and STB TV-cards. 413 414 The card needs to be physically altered for using it as a 415 GPIO card. For more information on how to build a GPIO card 416 from a BT8xx TV card, see the documentation file at 417 Documentation/bt8xxgpio.txt 418 419 If unsure, say N. 420 421config GPIO_LANGWELL 422 bool "Intel Langwell/Penwell GPIO support" 423 depends on PCI && X86 424 select IRQ_DOMAIN 425 help 426 Say Y here to support Intel Langwell/Penwell GPIO. 427 428config GPIO_PCH 429 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 430 depends on PCI && X86 431 select GENERIC_IRQ_CHIP 432 help 433 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 434 which is an IOH(Input/Output Hub) for x86 embedded processor. 435 This driver can access PCH GPIO device. 436 437 This driver also can be used for LAPIS Semiconductor IOH(Input/ 438 Output Hub), ML7223 and ML7831. 439 ML7223 IOH is for MP(Media Phone) use. 440 ML7831 IOH is for general purpose use. 441 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 442 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 443 444config GPIO_ML_IOH 445 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 446 depends on PCI 447 select GENERIC_IRQ_CHIP 448 help 449 ML7213 is companion chip for Intel Atom E6xx series. 450 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 451 Hub) which is for IVI(In-Vehicle Infotainment) use. 452 This driver can access the IOH's GPIO device. 453 454config GPIO_SODAVILLE 455 bool "Intel Sodaville GPIO support" 456 depends on X86 && PCI && OF 457 select GPIO_GENERIC 458 select GENERIC_IRQ_CHIP 459 help 460 Say Y here to support Intel Sodaville GPIO. 461 462config GPIO_TIMBERDALE 463 bool "Support for timberdale GPIO IP" 464 depends on MFD_TIMBERDALE && HAS_IOMEM 465 ---help--- 466 Add support for the GPIO IP in the timberdale FPGA. 467 468config GPIO_RDC321X 469 tristate "RDC R-321x GPIO support" 470 depends on PCI 471 select MFD_CORE 472 select MFD_RDC321X 473 help 474 Support for the RDC R321x SoC GPIOs over southbridge 475 PCI configuration space. 476 477comment "SPI GPIO expanders:" 478 479config GPIO_MAX7301 480 tristate "Maxim MAX7301 GPIO expander" 481 depends on SPI_MASTER 482 select GPIO_MAX730X 483 help 484 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 485 486config GPIO_MCP23S08 487 tristate "Microchip MCP23xxx I/O expander" 488 depends on SPI_MASTER || I2C 489 help 490 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 491 I/O expanders. 492 This provides a GPIO interface supporting inputs and outputs. 493 494config GPIO_MC33880 495 tristate "Freescale MC33880 high-side/low-side switch" 496 depends on SPI_MASTER 497 help 498 SPI driver for Freescale MC33880 high-side/low-side switch. 499 This provides GPIO interface supporting inputs and outputs. 500 501config GPIO_74X164 502 tristate "74x164 serial-in/parallel-out 8-bits shift register" 503 depends on SPI_MASTER 504 help 505 Platform driver for 74x164 compatible serial-in/parallel-out 506 8-outputs shift registers. This driver can be used to provide access 507 to more gpio outputs. 508 509comment "AC97 GPIO expanders:" 510 511config GPIO_UCB1400 512 bool "Philips UCB1400 GPIO" 513 depends on UCB1400_CORE 514 help 515 This enables support for the Philips UCB1400 GPIO pins. 516 The UCB1400 is an AC97 audio codec. 517 518comment "MODULbus GPIO expanders:" 519 520config GPIO_JANZ_TTL 521 tristate "Janz VMOD-TTL Digital IO Module" 522 depends on MFD_JANZ_CMODIO 523 help 524 This enables support for the Janz VMOD-TTL Digital IO module. 525 This driver provides support for driving the pins in output 526 mode only. Input mode is not supported. 527 528config GPIO_AB8500 529 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions" 530 depends on AB8500_CORE && BROKEN 531 help 532 Select this to enable the AB8500 IC GPIO driver 533 534config GPIO_TPS65910 535 bool "TPS65910 GPIO" 536 depends on MFD_TPS65910 537 help 538 Select this option to enable GPIO driver for the TPS65910 539 chip family. 540 541config GPIO_MSIC 542 bool "Intel MSIC mixed signal gpio support" 543 depends on MFD_INTEL_MSIC 544 help 545 Enable support for GPIO on intel MSIC controllers found in 546 intel MID devices 547 548endif 549