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 34menuconfig GPIOLIB 35 bool "GPIO Support" 36 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB 37 help 38 This enables GPIO support through the generic GPIO library. 39 You only need to enable this, if you also want to enable 40 one or more of the GPIO drivers below. 41 42 If unsure, say N. 43 44if GPIOLIB 45 46config GPIO_DEVRES 47 def_bool y 48 depends on HAS_IOMEM 49 50config OF_GPIO 51 def_bool y 52 depends on OF 53 54config GPIO_ACPI 55 def_bool y 56 depends on ACPI 57 58config DEBUG_GPIO 59 bool "Debug GPIO calls" 60 depends on DEBUG_KERNEL 61 help 62 Say Y here to add some extra checks and diagnostics to GPIO calls. 63 These checks help ensure that GPIOs have been properly initialized 64 before they are used, and that sleeping calls are not made from 65 non-sleeping contexts. They can make bitbanged serial protocols 66 slower. The diagnostics help catch the type of setup errors 67 that are most common when setting up new platforms or boards. 68 69config GPIO_SYSFS 70 bool "/sys/class/gpio/... (sysfs interface)" 71 depends on SYSFS 72 help 73 Say Y here to add a sysfs interface for GPIOs. 74 75 This is mostly useful to work around omissions in a system's 76 kernel support. Those are common in custom and semicustom 77 hardware assembled using standard kernels with a minimum of 78 custom patches. In those cases, userspace code may import 79 a given GPIO from the kernel, if no kernel driver requested it. 80 81 Kernel drivers may also request that a particular GPIO be 82 exported to userspace; this can be useful when debugging. 83 84config GPIO_GENERIC 85 tristate 86 87# put drivers in the right section, in alphabetical order 88 89config GPIO_DA9052 90 tristate "Dialog DA9052 GPIO" 91 depends on PMIC_DA9052 92 help 93 Say yes here to enable the GPIO driver for the DA9052 chip. 94 95config GPIO_DA9055 96 tristate "Dialog Semiconductor DA9055 GPIO" 97 depends on MFD_DA9055 98 help 99 Say yes here to enable the GPIO driver for the DA9055 chip. 100 101 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 102 be controller by this driver. 103 104 If driver is built as a module it will be called gpio-da9055. 105 106config GPIO_MAX730X 107 tristate 108 109comment "Memory mapped GPIO drivers:" 110 111config GPIO_CLPS711X 112 tristate "CLPS711X GPIO support" 113 depends on ARCH_CLPS711X 114 select GPIO_GENERIC 115 help 116 Say yes here to support GPIO on CLPS711X SoCs. 117 118config GPIO_GENERIC_PLATFORM 119 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 120 select GPIO_GENERIC 121 help 122 Say yes here to support basic platform_device memory-mapped GPIO controllers. 123 124config GPIO_IT8761E 125 tristate "IT8761E GPIO support" 126 depends on X86 # unconditional access to IO space. 127 help 128 Say yes here to support GPIO functionality of IT8761E super I/O chip. 129 130config GPIO_EM 131 tristate "Emma Mobile GPIO" 132 depends on ARM && OF_GPIO 133 help 134 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 135 136config GPIO_EP93XX 137 def_bool y 138 depends on ARCH_EP93XX 139 select GPIO_GENERIC 140 141config GPIO_MM_LANTIQ 142 bool "Lantiq Memory mapped GPIOs" 143 depends on LANTIQ && SOC_XWAY 144 help 145 This enables support for memory mapped GPIOs on the External Bus Unit 146 (EBU) found on Lantiq SoCs. The gpios are output only as they are 147 created by attaching a 16bit latch to the bus. 148 149config GPIO_F7188X 150 tristate "F71882FG and F71889F GPIO support" 151 depends on X86 152 help 153 This option enables support for GPIOs found on Fintek Super-I/O 154 chips F71882FG and F71889F. 155 156 To compile this driver as a module, choose M here: the module will 157 be called f7188x-gpio. 158 159config GPIO_MPC5200 160 def_bool y 161 depends on PPC_MPC52xx 162 163config GPIO_MPC8XXX 164 bool "MPC512x/MPC8xxx GPIO support" 165 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 166 FSL_SOC_BOOKE || PPC_86xx 167 help 168 Say Y here if you're going to use hardware that connects to the 169 MPC512x/831x/834x/837x/8572/8610 GPIOs. 170 171config GPIO_MSM_V1 172 tristate "Qualcomm MSM GPIO v1" 173 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 174 help 175 Say yes here to support the GPIO interface on ARM v6 based 176 Qualcomm MSM chips. Most of the pins on the MSM can be 177 selected for GPIO, and are controlled by this driver. 178 179config GPIO_MSM_V2 180 tristate "Qualcomm MSM GPIO v2" 181 depends on GPIOLIB && OF && ARCH_MSM 182 help 183 Say yes here to support the GPIO interface on ARM v7 based 184 Qualcomm MSM chips. Most of the pins on the MSM can be 185 selected for GPIO, and are controlled by this driver. 186 187config GPIO_MVEBU 188 def_bool y 189 depends on PLAT_ORION 190 depends on OF 191 select GPIO_GENERIC 192 select GENERIC_IRQ_CHIP 193 194config GPIO_MXC 195 def_bool y 196 depends on ARCH_MXC 197 select GPIO_GENERIC 198 select GENERIC_IRQ_CHIP 199 200config GPIO_MXS 201 def_bool y 202 depends on ARCH_MXS 203 select GPIO_GENERIC 204 select GENERIC_IRQ_CHIP 205 206config GPIO_OCTEON 207 tristate "Cavium OCTEON GPIO" 208 depends on GPIOLIB && CAVIUM_OCTEON_SOC 209 default y 210 help 211 Say yes here to support the on-chip GPIO lines on the OCTEON 212 family of SOCs. 213 214config GPIO_PL061 215 bool "PrimeCell PL061 GPIO support" 216 depends on ARM && ARM_AMBA 217 select GENERIC_IRQ_CHIP 218 help 219 Say yes here to support the PrimeCell PL061 GPIO device 220 221config GPIO_PXA 222 bool "PXA GPIO support" 223 depends on ARCH_PXA || ARCH_MMP 224 help 225 Say yes here to support the PXA GPIO device 226 227config GPIO_RCAR 228 tristate "Renesas R-Car GPIO" 229 depends on ARM 230 help 231 Say yes here to support GPIO on Renesas R-Car SoCs. 232 233config GPIO_SAMSUNG 234 bool 235 depends on PLAT_SAMSUNG 236 help 237 Legacy GPIO support. Use only for platforms without support for 238 pinctrl. 239 240config GPIO_SPEAR_SPICS 241 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 242 depends on PLAT_SPEAR 243 select GENERIC_IRQ_CHIP 244 help 245 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 246 247config GPIO_STA2X11 248 bool "STA2x11/ConneXt GPIO support" 249 depends on MFD_STA2X11 250 select GENERIC_IRQ_CHIP 251 help 252 Say yes here to support the STA2x11/ConneXt GPIO device. 253 The GPIO module has 128 GPIO pins with alternate functions. 254 255config GPIO_TS5500 256 tristate "TS-5500 DIO blocks and compatibles" 257 help 258 This driver supports Digital I/O exposed by pin blocks found on some 259 Technologic Systems platforms. It includes, but is not limited to, 3 260 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 261 LCD port. 262 263config GPIO_TZ1090 264 bool "Toumaz Xenif TZ1090 GPIO support" 265 depends on SOC_TZ1090 266 select GENERIC_IRQ_CHIP 267 default y 268 help 269 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 270 271config GPIO_TZ1090_PDC 272 bool "Toumaz Xenif TZ1090 PDC GPIO support" 273 depends on SOC_TZ1090 274 default y 275 help 276 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 277 278config GPIO_XILINX 279 bool "Xilinx GPIO support" 280 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 281 help 282 Say yes here to support the Xilinx FPGA GPIO device 283 284config GPIO_VR41XX 285 tristate "NEC VR4100 series General-purpose I/O Uint support" 286 depends on CPU_VR41XX 287 help 288 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 289 290config GPIO_SCH 291 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 292 depends on PCI && X86 293 select MFD_CORE 294 select LPC_SCH 295 help 296 Say yes here to support GPIO interface on Intel Poulsbo SCH, 297 Intel Tunnel Creek processor or Intel Centerton processor. 298 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 299 powered by the core power rail and are turned off during sleep 300 modes (S3 and higher). The remaining four GPIOs are powered by 301 the Intel SCH suspend power supply. These GPIOs remain 302 active during S3. The suspend powered GPIOs can be used to wake the 303 system from the Suspend-to-RAM state. 304 The Intel Tunnel Creek processor has 5 GPIOs powered by the 305 core power rail and 9 from suspend power supply. 306 The Intel Centerton processor has a total of 30 GPIO pins. 307 Twenty-one are powered by the core power rail and 9 from the 308 suspend power supply. 309 310config GPIO_ICH 311 tristate "Intel ICH GPIO" 312 depends on PCI && X86 313 select MFD_CORE 314 select LPC_ICH 315 help 316 Say yes here to support the GPIO functionality of a number of Intel 317 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 318 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 319 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 320 321 If unsure, say N. 322 323config GPIO_IOP 324 tristate "Intel IOP GPIO" 325 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 326 help 327 Say yes here to support the GPIO functionality of a number of Intel 328 IOP32X or IOP33X. 329 330 If unsure, say N. 331 332config GPIO_VX855 333 tristate "VIA VX855/VX875 GPIO" 334 depends on PCI 335 select MFD_CORE 336 select MFD_VX855 337 help 338 Support access to the VX855/VX875 GPIO lines through the gpio library. 339 340 This driver provides common support for accessing the device, 341 additional drivers must be enabled in order to use the 342 functionality of the device. 343 344config GPIO_GE_FPGA 345 bool "GE FPGA based GPIO" 346 depends on GE_FPGA 347 help 348 Support for common GPIO functionality provided on some GE Single Board 349 Computers. 350 351 This driver provides basic support (configure as input or output, read 352 and write pin state) for GPIO implemented in a number of GE single 353 board computers. 354 355config GPIO_LYNXPOINT 356 bool "Intel Lynxpoint GPIO support" 357 depends on ACPI && X86 358 select IRQ_DOMAIN 359 help 360 driver for GPIO functionality on Intel Lynxpoint PCH chipset 361 Requires ACPI device enumeration code to set up a platform device. 362 363config GPIO_GRGPIO 364 tristate "Aeroflex Gaisler GRGPIO support" 365 depends on OF 366 select GPIO_GENERIC 367 select IRQ_DOMAIN 368 help 369 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 370 VHDL IP core library. 371 372comment "I2C GPIO expanders:" 373 374config GPIO_ARIZONA 375 tristate "Wolfson Microelectronics Arizona class devices" 376 depends on MFD_ARIZONA 377 help 378 Support for GPIOs on Wolfson Arizona class devices. 379 380config GPIO_MAX7300 381 tristate "Maxim MAX7300 GPIO expander" 382 depends on I2C 383 select GPIO_MAX730X 384 help 385 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 386 387config GPIO_MAX732X 388 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 389 depends on I2C 390 help 391 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 392 Port Expanders. Each IO port on these chips has a fixed role of 393 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 394 Input and Output (designed by 'P'). The combinations are listed 395 below: 396 397 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 398 max7322 (4I4O), max7323 (4P4O) 399 400 16 bits: max7324 (8I8O), max7325 (8P8O), 401 max7326 (4I12O), max7327 (4P12O) 402 403 Board setup code must specify the model to use, and the start 404 number for these GPIOs. 405 406config GPIO_MAX732X_IRQ 407 bool "Interrupt controller support for MAX732x" 408 depends on GPIO_MAX732X=y 409 help 410 Say yes here to enable the max732x to be used as an interrupt 411 controller. It requires the driver to be built in the kernel. 412 413config GPIO_MC9S08DZ60 414 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 415 depends on I2C=y && MACH_MX35_3DS 416 help 417 Select this to enable the MC9S08DZ60 GPIO driver 418 419config GPIO_PCA953X 420 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 421 depends on I2C 422 help 423 Say yes here to provide access to several register-oriented 424 SMBus I/O expanders, made mostly by NXP or TI. Compatible 425 models include: 426 427 4 bits: pca9536, pca9537 428 429 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 430 pca9556, pca9557, pca9574, tca6408 431 432 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 433 tca6416 434 435config GPIO_PCA953X_IRQ 436 bool "Interrupt controller support for PCA953x" 437 depends on GPIO_PCA953X=y 438 help 439 Say yes here to enable the pca953x to be used as an interrupt 440 controller. It requires the driver to be built in the kernel. 441 442config GPIO_PCF857X 443 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 444 depends on I2C 445 select IRQ_DOMAIN 446 help 447 Say yes here to provide access to most "quasi-bidirectional" I2C 448 GPIO expanders used for additional digital outputs or inputs. 449 Most of these parts are from NXP, though TI is a second source for 450 some of them. Compatible models include: 451 452 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 453 pca9670, pca9672, pca9674, pca9674a, 454 max7328, max7329 455 456 16 bits: pcf8575, pcf8575c, pca8575, 457 pca9671, pca9673, pca9675 458 459 Your board setup code will need to declare the expanders in 460 use, and assign numbers to the GPIOs they expose. Those GPIOs 461 can then be used from drivers and other kernel code, just like 462 other GPIOs, but only accessible from task contexts. 463 464 This driver provides an in-kernel interface to those GPIOs using 465 platform-neutral GPIO calls. 466 467config GPIO_RC5T583 468 bool "RICOH RC5T583 GPIO" 469 depends on MFD_RC5T583 470 help 471 Select this option to enable GPIO driver for the Ricoh RC5T583 472 chip family. 473 This driver provides the support for driving/reading the gpio pins 474 of RC5T583 device through standard gpio library. 475 476config GPIO_SX150X 477 bool "Semtech SX150x I2C GPIO expander" 478 depends on I2C=y 479 default n 480 help 481 Say yes here to provide support for Semtech SX150-series I2C 482 GPIO expanders. Compatible models include: 483 484 8 bits: sx1508q 485 16 bits: sx1509q 486 487config GPIO_STMPE 488 bool "STMPE GPIOs" 489 depends on MFD_STMPE 490 help 491 This enables support for the GPIOs found on the STMPE I/O 492 Expanders. 493 494config GPIO_STP_XWAY 495 bool "XWAY STP GPIOs" 496 depends on SOC_XWAY 497 help 498 This enables support for the Serial To Parallel (STP) unit found on 499 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 500 that can be up to 24 bit. This peripheral is aimed at driving leds. 501 Some of the gpios/leds can be auto updated by the soc with dsl and 502 phy status. 503 504config GPIO_TC3589X 505 bool "TC3589X GPIOs" 506 depends on MFD_TC3589X 507 help 508 This enables support for the GPIOs found on the TC3589X 509 I/O Expander. 510 511config GPIO_TPS65912 512 tristate "TI TPS65912 GPIO" 513 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 514 help 515 This driver supports TPS65912 gpio chip 516 517config GPIO_TWL4030 518 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 519 depends on TWL4030_CORE 520 help 521 Say yes here to access the GPIO signals of various multi-function 522 power management chips from Texas Instruments. 523 524config GPIO_TWL6040 525 tristate "TWL6040 GPO" 526 depends on TWL6040_CORE 527 help 528 Say yes here to access the GPO signals of twl6040 529 audio chip from Texas Instruments. 530 531config GPIO_WM831X 532 tristate "WM831x GPIOs" 533 depends on MFD_WM831X 534 help 535 Say yes here to access the GPIO signals of WM831x power management 536 chips from Wolfson Microelectronics. 537 538config GPIO_WM8350 539 tristate "WM8350 GPIOs" 540 depends on MFD_WM8350 541 help 542 Say yes here to access the GPIO signals of WM8350 power management 543 chips from Wolfson Microelectronics. 544 545config GPIO_WM8994 546 tristate "WM8994 GPIOs" 547 depends on MFD_WM8994 548 help 549 Say yes here to access the GPIO signals of WM8994 audio hub 550 CODECs from Wolfson Microelectronics. 551 552config GPIO_ADP5520 553 tristate "GPIO Support for ADP5520 PMIC" 554 depends on PMIC_ADP5520 555 help 556 This option enables support for on-chip GPIO found 557 on Analog Devices ADP5520 PMICs. 558 559config GPIO_ADP5588 560 tristate "ADP5588 I2C GPIO expander" 561 depends on I2C 562 help 563 This option enables support for 18 GPIOs found 564 on Analog Devices ADP5588 GPIO Expanders. 565 566config GPIO_ADP5588_IRQ 567 bool "Interrupt controller support for ADP5588" 568 depends on GPIO_ADP5588=y 569 help 570 Say yes here to enable the adp5588 to be used as an interrupt 571 controller. It requires the driver to be built in the kernel. 572 573config GPIO_ADNP 574 tristate "Avionic Design N-bit GPIO expander" 575 depends on I2C && OF_GPIO 576 help 577 This option enables support for N GPIOs found on Avionic Design 578 I2C GPIO expanders. The register space will be extended by powers 579 of two, so the controller will need to accommodate for that. For 580 example: if a controller provides 48 pins, 6 registers will be 581 enough to represent all pins, but the driver will assume a 582 register layout for 64 pins (8 registers). 583 584comment "PCI GPIO expanders:" 585 586config GPIO_CS5535 587 tristate "AMD CS5535/CS5536 GPIO support" 588 depends on PCI && X86 && MFD_CS5535 589 help 590 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 591 can be used for quite a number of things. The CS5535/6 is found on 592 AMD Geode and Lemote Yeeloong devices. 593 594 If unsure, say N. 595 596config GPIO_BT8XX 597 tristate "BT8XX GPIO abuser" 598 depends on PCI && VIDEO_BT848=n 599 help 600 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 601 as a cheap PCI GPIO card. 602 603 This chip can be found on Miro, Hauppauge and STB TV-cards. 604 605 The card needs to be physically altered for using it as a 606 GPIO card. For more information on how to build a GPIO card 607 from a BT8xx TV card, see the documentation file at 608 Documentation/bt8xxgpio.txt 609 610 If unsure, say N. 611 612config GPIO_AMD8111 613 tristate "AMD 8111 GPIO driver" 614 depends on PCI 615 help 616 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 617 618 Note, that usually system firmware/ACPI handles GPIO pins on their 619 own and users might easily break their systems with uncarefull usage 620 of this driver! 621 622 If unsure, say N 623 624config GPIO_INTEL_MID 625 bool "Intel Mid GPIO support" 626 depends on PCI && X86 627 select IRQ_DOMAIN 628 help 629 Say Y here to support Intel Mid GPIO. 630 631config GPIO_PCH 632 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 633 depends on PCI && X86 634 select GENERIC_IRQ_CHIP 635 help 636 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 637 which is an IOH(Input/Output Hub) for x86 embedded processor. 638 This driver can access PCH GPIO device. 639 640 This driver also can be used for LAPIS Semiconductor IOH(Input/ 641 Output Hub), ML7223 and ML7831. 642 ML7223 IOH is for MP(Media Phone) use. 643 ML7831 IOH is for general purpose use. 644 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 645 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 646 647config GPIO_ML_IOH 648 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 649 depends on PCI 650 select GENERIC_IRQ_CHIP 651 help 652 ML7213 is companion chip for Intel Atom E6xx series. 653 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 654 Hub) which is for IVI(In-Vehicle Infotainment) use. 655 This driver can access the IOH's GPIO device. 656 657config GPIO_SODAVILLE 658 bool "Intel Sodaville GPIO support" 659 depends on X86 && PCI && OF 660 select GPIO_GENERIC 661 select GENERIC_IRQ_CHIP 662 help 663 Say Y here to support Intel Sodaville GPIO. 664 665config GPIO_TIMBERDALE 666 bool "Support for timberdale GPIO IP" 667 depends on MFD_TIMBERDALE && HAS_IOMEM 668 ---help--- 669 Add support for the GPIO IP in the timberdale FPGA. 670 671config GPIO_RDC321X 672 tristate "RDC R-321x GPIO support" 673 depends on PCI 674 select MFD_CORE 675 select MFD_RDC321X 676 help 677 Support for the RDC R321x SoC GPIOs over southbridge 678 PCI configuration space. 679 680comment "SPI GPIO expanders:" 681 682config GPIO_MAX7301 683 tristate "Maxim MAX7301 GPIO expander" 684 depends on SPI_MASTER 685 select GPIO_MAX730X 686 help 687 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 688 689config GPIO_MCP23S08 690 tristate "Microchip MCP23xxx I/O expander" 691 depends on (SPI_MASTER && !I2C) || I2C 692 help 693 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 694 I/O expanders. 695 This provides a GPIO interface supporting inputs and outputs. 696 697config GPIO_MC33880 698 tristate "Freescale MC33880 high-side/low-side switch" 699 depends on SPI_MASTER 700 help 701 SPI driver for Freescale MC33880 high-side/low-side switch. 702 This provides GPIO interface supporting inputs and outputs. 703 704config GPIO_74X164 705 tristate "74x164 serial-in/parallel-out 8-bits shift register" 706 depends on SPI_MASTER 707 help 708 Platform driver for 74x164 compatible serial-in/parallel-out 709 8-outputs shift registers. This driver can be used to provide access 710 to more gpio outputs. 711 712comment "AC97 GPIO expanders:" 713 714config GPIO_UCB1400 715 tristate "Philips UCB1400 GPIO" 716 depends on UCB1400_CORE 717 help 718 This enables support for the Philips UCB1400 GPIO pins. 719 The UCB1400 is an AC97 audio codec. 720 721comment "LPC GPIO expanders:" 722 723config GPIO_KEMPLD 724 tristate "Kontron ETX / COMexpress GPIO" 725 depends on MFD_KEMPLD 726 help 727 This enables support for the PLD GPIO interface on some Kontron ETX 728 and COMexpress (ETXexpress) modules. 729 730 This driver can also be built as a module. If so, the module will be 731 called gpio-kempld. 732 733comment "MODULbus GPIO expanders:" 734 735config GPIO_JANZ_TTL 736 tristate "Janz VMOD-TTL Digital IO Module" 737 depends on MFD_JANZ_CMODIO 738 help 739 This enables support for the Janz VMOD-TTL Digital IO module. 740 This driver provides support for driving the pins in output 741 mode only. Input mode is not supported. 742 743config GPIO_PALMAS 744 bool "TI PALMAS series PMICs GPIO" 745 depends on MFD_PALMAS 746 help 747 Select this option to enable GPIO driver for the TI PALMAS 748 series chip family. 749 750config GPIO_TPS6586X 751 bool "TPS6586X GPIO" 752 depends on MFD_TPS6586X 753 help 754 Select this option to enable GPIO driver for the TPS6586X 755 chip family. 756 757config GPIO_TPS65910 758 bool "TPS65910 GPIO" 759 depends on MFD_TPS65910 760 help 761 Select this option to enable GPIO driver for the TPS65910 762 chip family. 763 764config GPIO_MSIC 765 bool "Intel MSIC mixed signal gpio support" 766 depends on MFD_INTEL_MSIC 767 help 768 Enable support for GPIO on intel MSIC controllers found in 769 intel MID devices 770 771config GPIO_BCM_KONA 772 bool "Broadcom Kona GPIO" 773 depends on OF_GPIO 774 help 775 Turn on GPIO support for Broadcom "Kona" chips. 776 777comment "USB GPIO expanders:" 778 779config GPIO_VIPERBOARD 780 tristate "Viperboard GPIO a & b support" 781 depends on MFD_VIPERBOARD && USB 782 help 783 Say yes here to access the GPIO signals of Nano River 784 Technologies Viperboard. There are two GPIO chips on the 785 board: gpioa and gpiob. 786 See viperboard API specification and Nano 787 River Tech's viperboard.h for detailed meaning 788 of the module parameters. 789 790endif 791