1# 2# GPIO infrastructure and drivers 3# 4 5config 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 15config 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 27menuconfig 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 38if GPIOLIB 39 40config OF_GPIO 41 def_bool y 42 depends on OF && !SPARC 43 44config DEBUG_GPIO 45 bool "Debug GPIO calls" 46 depends on DEBUG_KERNEL 47 help 48 Say Y here to add some extra checks and diagnostics to GPIO calls. 49 These checks help ensure that GPIOs have been properly initialized 50 before they are used, and that sleeping calls are not made from 51 non-sleeping contexts. They can make bitbanged serial protocols 52 slower. The diagnostics help catch the type of setup errors 53 that are most common when setting up new platforms or boards. 54 55config GPIO_SYSFS 56 bool "/sys/class/gpio/... (sysfs interface)" 57 depends on SYSFS && EXPERIMENTAL 58 help 59 Say Y here to add a sysfs interface for GPIOs. 60 61 This is mostly useful to work around omissions in a system's 62 kernel support. Those are common in custom and semicustom 63 hardware assembled using standard kernels with a minimum of 64 custom patches. In those cases, userspace code may import 65 a given GPIO from the kernel, if no kernel driver requested it. 66 67 Kernel drivers may also request that a particular GPIO be 68 exported to userspace; this can be useful when debugging. 69 70config GPIO_GENERIC 71 tristate 72 73# put drivers in the right section, in alphabetical order 74 75config GPIO_DA9052 76 tristate "Dialog DA9052 GPIO" 77 depends on PMIC_DA9052 && BROKEN 78 help 79 Say yes here to enable the GPIO driver for the DA9052 chip. 80 81config GPIO_MAX730X 82 tristate 83 84comment "Memory mapped GPIO drivers:" 85 86config GPIO_GENERIC_PLATFORM 87 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 88 select GPIO_GENERIC 89 help 90 Say yes here to support basic platform_device memory-mapped GPIO controllers. 91 92config GPIO_IT8761E 93 tristate "IT8761E GPIO support" 94 depends on X86 # unconditional access to IO space. 95 help 96 Say yes here to support GPIO functionality of IT8761E super I/O chip. 97 98config GPIO_EP93XX 99 def_bool y 100 depends on ARCH_EP93XX 101 select GPIO_GENERIC 102 103config GPIO_MPC5200 104 def_bool y 105 depends on PPC_MPC52xx 106 107config GPIO_MPC8XXX 108 bool "MPC512x/MPC8xxx GPIO support" 109 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 110 FSL_SOC_BOOKE || PPC_86xx 111 help 112 Say Y here if you're going to use hardware that connects to the 113 MPC512x/831x/834x/837x/8572/8610 GPIOs. 114 115config GPIO_MSM_V1 116 tristate "Qualcomm MSM GPIO v1" 117 depends on GPIOLIB && ARCH_MSM 118 help 119 Say yes here to support the GPIO interface on ARM v6 based 120 Qualcomm MSM chips. Most of the pins on the MSM can be 121 selected for GPIO, and are controlled by this driver. 122 123config GPIO_MSM_V2 124 tristate "Qualcomm MSM GPIO v2" 125 depends on GPIOLIB && ARCH_MSM 126 help 127 Say yes here to support the GPIO interface on ARM v7 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_MXC 132 def_bool y 133 depends on ARCH_MXC 134 select GPIO_GENERIC 135 select GENERIC_IRQ_CHIP 136 137config GPIO_MXS 138 def_bool y 139 depends on ARCH_MXS 140 select GPIO_GENERIC 141 select GENERIC_IRQ_CHIP 142 143config GPIO_PL061 144 bool "PrimeCell PL061 GPIO support" 145 depends on ARM_AMBA 146 select GENERIC_IRQ_CHIP 147 help 148 Say yes here to support the PrimeCell PL061 GPIO device 149 150config GPIO_PXA 151 bool "PXA GPIO support" 152 depends on ARCH_PXA || ARCH_MMP 153 help 154 Say yes here to support the PXA GPIO device 155 156config GPIO_XILINX 157 bool "Xilinx GPIO support" 158 depends on PPC_OF || MICROBLAZE 159 help 160 Say yes here to support the Xilinx FPGA GPIO device 161 162config GPIO_VR41XX 163 tristate "NEC VR4100 series General-purpose I/O Uint support" 164 depends on CPU_VR41XX 165 help 166 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 167 168config GPIO_SCH 169 tristate "Intel SCH/TunnelCreek GPIO" 170 depends on PCI && X86 171 select MFD_CORE 172 select LPC_SCH 173 help 174 Say yes here to support GPIO interface on Intel Poulsbo SCH 175 or Intel Tunnel Creek processor. 176 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 177 powered by the core power rail and are turned off during sleep 178 modes (S3 and higher). The remaining four GPIOs are powered by 179 the Intel SCH suspend power supply. These GPIOs remain 180 active during S3. The suspend powered GPIOs can be used to wake the 181 system from the Suspend-to-RAM state. 182 The Intel Tunnel Creek processor has 5 GPIOs powered by the 183 core power rail and 9 from suspend power supply. 184 185config GPIO_VX855 186 tristate "VIA VX855/VX875 GPIO" 187 depends on PCI 188 select MFD_CORE 189 select MFD_VX855 190 help 191 Support access to the VX855/VX875 GPIO lines through the gpio library. 192 193 This driver provides common support for accessing the device, 194 additional drivers must be enabled in order to use the 195 functionality of the device. 196 197config GPIO_GE_FPGA 198 bool "GE FPGA based GPIO" 199 depends on GE_FPGA 200 help 201 Support for common GPIO functionality provided on some GE Single Board 202 Computers. 203 204 This driver provides basic support (configure as input or output, read 205 and write pin state) for GPIO implemented in a number of GE single 206 board computers. 207 208comment "I2C GPIO expanders:" 209 210config GPIO_MAX7300 211 tristate "Maxim MAX7300 GPIO expander" 212 depends on I2C 213 select GPIO_MAX730X 214 help 215 GPIO driver for Maxim MAX7301 I2C-based GPIO expander. 216 217config GPIO_MAX732X 218 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 219 depends on I2C 220 help 221 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 222 Port Expanders. Each IO port on these chips has a fixed role of 223 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 224 Input and Output (designed by 'P'). The combinations are listed 225 below: 226 227 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 228 max7322 (4I4O), max7323 (4P4O) 229 230 16 bits: max7324 (8I8O), max7325 (8P8O), 231 max7326 (4I12O), max7327 (4P12O) 232 233 Board setup code must specify the model to use, and the start 234 number for these GPIOs. 235 236config GPIO_MAX732X_IRQ 237 bool "Interrupt controller support for MAX732x" 238 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS 239 help 240 Say yes here to enable the max732x to be used as an interrupt 241 controller. It requires the driver to be built in the kernel. 242 243config GPIO_MC9S08DZ60 244 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 245 depends on I2C && MACH_MX35_3DS 246 help 247 Select this to enable the MC9S08DZ60 GPIO driver 248 249config GPIO_PCA953X 250 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 251 depends on I2C 252 help 253 Say yes here to provide access to several register-oriented 254 SMBus I/O expanders, made mostly by NXP or TI. Compatible 255 models include: 256 257 4 bits: pca9536, pca9537 258 259 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 260 pca9556, pca9557, pca9574, tca6408 261 262 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 263 tca6416 264 265config GPIO_PCA953X_IRQ 266 bool "Interrupt controller support for PCA953x" 267 depends on GPIO_PCA953X=y 268 help 269 Say yes here to enable the pca953x to be used as an interrupt 270 controller. It requires the driver to be built in the kernel. 271 272config GPIO_PCF857X 273 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 274 depends on I2C 275 help 276 Say yes here to provide access to most "quasi-bidirectional" I2C 277 GPIO expanders used for additional digital outputs or inputs. 278 Most of these parts are from NXP, though TI is a second source for 279 some of them. Compatible models include: 280 281 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 282 pca9670, pca9672, pca9674, pca9674a, 283 max7328, max7329 284 285 16 bits: pcf8575, pcf8575c, pca8575, 286 pca9671, pca9673, pca9675 287 288 Your board setup code will need to declare the expanders in 289 use, and assign numbers to the GPIOs they expose. Those GPIOs 290 can then be used from drivers and other kernel code, just like 291 other GPIOs, but only accessible from task contexts. 292 293 This driver provides an in-kernel interface to those GPIOs using 294 platform-neutral GPIO calls. 295 296config GPIO_SX150X 297 bool "Semtech SX150x I2C GPIO expander" 298 depends on I2C=y 299 default n 300 help 301 Say yes here to provide support for Semtech SX150-series I2C 302 GPIO expanders. Compatible models include: 303 304 8 bits: sx1508q 305 16 bits: sx1509q 306 307config GPIO_STMPE 308 bool "STMPE GPIOs" 309 depends on MFD_STMPE 310 help 311 This enables support for the GPIOs found on the STMPE I/O 312 Expanders. 313 314config GPIO_TC3589X 315 bool "TC3589X GPIOs" 316 depends on MFD_TC3589X 317 help 318 This enables support for the GPIOs found on the TC3589X 319 I/O Expander. 320 321config GPIO_TPS65912 322 tristate "TI TPS65912 GPIO" 323 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 324 help 325 This driver supports TPS65912 gpio chip 326 327config GPIO_TWL4030 328 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 329 depends on TWL4030_CORE 330 help 331 Say yes here to access the GPIO signals of various multi-function 332 power management chips from Texas Instruments. 333 334config GPIO_WM831X 335 tristate "WM831x GPIOs" 336 depends on MFD_WM831X 337 help 338 Say yes here to access the GPIO signals of WM831x power management 339 chips from Wolfson Microelectronics. 340 341config GPIO_WM8350 342 tristate "WM8350 GPIOs" 343 depends on MFD_WM8350 344 help 345 Say yes here to access the GPIO signals of WM8350 power management 346 chips from Wolfson Microelectronics. 347 348config GPIO_WM8994 349 tristate "WM8994 GPIOs" 350 depends on MFD_WM8994 351 help 352 Say yes here to access the GPIO signals of WM8994 audio hub 353 CODECs from Wolfson Microelectronics. 354 355config GPIO_ADP5520 356 tristate "GPIO Support for ADP5520 PMIC" 357 depends on PMIC_ADP5520 358 help 359 This option enables support for on-chip GPIO found 360 on Analog Devices ADP5520 PMICs. 361 362config GPIO_ADP5588 363 tristate "ADP5588 I2C GPIO expander" 364 depends on I2C 365 help 366 This option enables support for 18 GPIOs found 367 on Analog Devices ADP5588 GPIO Expanders. 368 369config GPIO_ADP5588_IRQ 370 bool "Interrupt controller support for ADP5588" 371 depends on GPIO_ADP5588=y 372 help 373 Say yes here to enable the adp5588 to be used as an interrupt 374 controller. It requires the driver to be built in the kernel. 375 376comment "PCI GPIO expanders:" 377 378config GPIO_CS5535 379 tristate "AMD CS5535/CS5536 GPIO support" 380 depends on PCI && X86 && MFD_CS5535 381 help 382 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 383 can be used for quite a number of things. The CS5535/6 is found on 384 AMD Geode and Lemote Yeeloong devices. 385 386 If unsure, say N. 387 388config GPIO_BT8XX 389 tristate "BT8XX GPIO abuser" 390 depends on PCI && VIDEO_BT848=n 391 help 392 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 393 as a cheap PCI GPIO card. 394 395 This chip can be found on Miro, Hauppauge and STB TV-cards. 396 397 The card needs to be physically altered for using it as a 398 GPIO card. For more information on how to build a GPIO card 399 from a BT8xx TV card, see the documentation file at 400 Documentation/bt8xxgpio.txt 401 402 If unsure, say N. 403 404config GPIO_LANGWELL 405 bool "Intel Langwell/Penwell GPIO support" 406 depends on PCI && X86 407 select IRQ_DOMAIN 408 help 409 Say Y here to support Intel Langwell/Penwell GPIO. 410 411config 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 427config 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 437config 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 445config 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 451config 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 460comment "SPI GPIO expanders:" 461 462config 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 469config 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 477config 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 484config 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 492comment "AC97 GPIO expanders:" 493 494config 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 501comment "MODULbus GPIO expanders:" 502 503config 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 511config 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 517config 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 524config GPIO_MSIC 525 bool "Intel MSIC mixed signal gpio support" 526 depends on MFD_INTEL_MSIC 527 help 528 Enable support for GPIO on intel MSIC controllers found in 529 intel MID devices 530 531endif 532