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_MOXART 160 bool "MOXART GPIO support" 161 depends on ARCH_MOXART 162 help 163 Select this option to enable GPIO driver for 164 MOXA ART SoC devices. 165 166config GPIO_MPC5200 167 def_bool y 168 depends on PPC_MPC52xx 169 170config GPIO_MPC8XXX 171 bool "MPC512x/MPC8xxx GPIO support" 172 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 173 FSL_SOC_BOOKE || PPC_86xx 174 help 175 Say Y here if you're going to use hardware that connects to the 176 MPC512x/831x/834x/837x/8572/8610 GPIOs. 177 178config GPIO_MSM_V1 179 tristate "Qualcomm MSM GPIO v1" 180 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 181 help 182 Say yes here to support the GPIO interface on ARM v6 based 183 Qualcomm MSM chips. Most of the pins on the MSM can be 184 selected for GPIO, and are controlled by this driver. 185 186config GPIO_MSM_V2 187 tristate "Qualcomm MSM GPIO v2" 188 depends on GPIOLIB && OF && ARCH_MSM 189 help 190 Say yes here to support the GPIO interface on ARM v7 based 191 Qualcomm MSM chips. Most of the pins on the MSM can be 192 selected for GPIO, and are controlled by this driver. 193 194config GPIO_MVEBU 195 def_bool y 196 depends on PLAT_ORION 197 depends on OF 198 select GPIO_GENERIC 199 select GENERIC_IRQ_CHIP 200 201config GPIO_MXC 202 def_bool y 203 depends on ARCH_MXC 204 select GPIO_GENERIC 205 select GENERIC_IRQ_CHIP 206 207config GPIO_MXS 208 def_bool y 209 depends on ARCH_MXS 210 select GPIO_GENERIC 211 select GENERIC_IRQ_CHIP 212 213config GPIO_OCTEON 214 tristate "Cavium OCTEON GPIO" 215 depends on GPIOLIB && CAVIUM_OCTEON_SOC 216 default y 217 help 218 Say yes here to support the on-chip GPIO lines on the OCTEON 219 family of SOCs. 220 221config GPIO_PL061 222 bool "PrimeCell PL061 GPIO support" 223 depends on ARM_AMBA 224 select GENERIC_IRQ_CHIP 225 help 226 Say yes here to support the PrimeCell PL061 GPIO device 227 228config GPIO_PXA 229 bool "PXA GPIO support" 230 depends on ARCH_PXA || ARCH_MMP 231 help 232 Say yes here to support the PXA GPIO device 233 234config GPIO_RCAR 235 tristate "Renesas R-Car GPIO" 236 depends on ARM 237 help 238 Say yes here to support GPIO on Renesas R-Car SoCs. 239 240config GPIO_SAMSUNG 241 bool 242 depends on PLAT_SAMSUNG 243 help 244 Legacy GPIO support. Use only for platforms without support for 245 pinctrl. 246 247config GPIO_SPEAR_SPICS 248 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 249 depends on PLAT_SPEAR 250 select GENERIC_IRQ_CHIP 251 help 252 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 253 254config GPIO_STA2X11 255 bool "STA2x11/ConneXt GPIO support" 256 depends on MFD_STA2X11 257 select GENERIC_IRQ_CHIP 258 help 259 Say yes here to support the STA2x11/ConneXt GPIO device. 260 The GPIO module has 128 GPIO pins with alternate functions. 261 262config GPIO_TS5500 263 tristate "TS-5500 DIO blocks and compatibles" 264 help 265 This driver supports Digital I/O exposed by pin blocks found on some 266 Technologic Systems platforms. It includes, but is not limited to, 3 267 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 268 LCD port. 269 270config GPIO_TZ1090 271 bool "Toumaz Xenif TZ1090 GPIO support" 272 depends on SOC_TZ1090 273 select GENERIC_IRQ_CHIP 274 default y 275 help 276 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 277 278config GPIO_TZ1090_PDC 279 bool "Toumaz Xenif TZ1090 PDC GPIO support" 280 depends on SOC_TZ1090 281 default y 282 help 283 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 284 285config GPIO_XILINX 286 bool "Xilinx GPIO support" 287 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 288 help 289 Say yes here to support the Xilinx FPGA GPIO device 290 291config GPIO_VR41XX 292 tristate "NEC VR4100 series General-purpose I/O Uint support" 293 depends on CPU_VR41XX 294 help 295 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 296 297config GPIO_SCH 298 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 299 depends on PCI && X86 300 select MFD_CORE 301 select LPC_SCH 302 help 303 Say yes here to support GPIO interface on Intel Poulsbo SCH, 304 Intel Tunnel Creek processor or Intel Centerton processor. 305 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 306 powered by the core power rail and are turned off during sleep 307 modes (S3 and higher). The remaining four GPIOs are powered by 308 the Intel SCH suspend power supply. These GPIOs remain 309 active during S3. The suspend powered GPIOs can be used to wake the 310 system from the Suspend-to-RAM state. 311 The Intel Tunnel Creek processor has 5 GPIOs powered by the 312 core power rail and 9 from suspend power supply. 313 The Intel Centerton processor has a total of 30 GPIO pins. 314 Twenty-one are powered by the core power rail and 9 from the 315 suspend power supply. 316 317config GPIO_ICH 318 tristate "Intel ICH GPIO" 319 depends on PCI && X86 320 select MFD_CORE 321 select LPC_ICH 322 help 323 Say yes here to support the GPIO functionality of a number of Intel 324 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 325 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 326 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 327 328 If unsure, say N. 329 330config GPIO_IOP 331 tristate "Intel IOP GPIO" 332 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 333 help 334 Say yes here to support the GPIO functionality of a number of Intel 335 IOP32X or IOP33X. 336 337 If unsure, say N. 338 339config GPIO_VX855 340 tristate "VIA VX855/VX875 GPIO" 341 depends on PCI 342 select MFD_CORE 343 select MFD_VX855 344 help 345 Support access to the VX855/VX875 GPIO lines through the gpio library. 346 347 This driver provides common support for accessing the device, 348 additional drivers must be enabled in order to use the 349 functionality of the device. 350 351config GPIO_GE_FPGA 352 bool "GE FPGA based GPIO" 353 depends on GE_FPGA 354 help 355 Support for common GPIO functionality provided on some GE Single Board 356 Computers. 357 358 This driver provides basic support (configure as input or output, read 359 and write pin state) for GPIO implemented in a number of GE single 360 board computers. 361 362config GPIO_LYNXPOINT 363 tristate "Intel Lynxpoint GPIO support" 364 depends on ACPI && X86 365 select IRQ_DOMAIN 366 help 367 driver for GPIO functionality on Intel Lynxpoint PCH chipset 368 Requires ACPI device enumeration code to set up a platform device. 369 370config GPIO_GRGPIO 371 tristate "Aeroflex Gaisler GRGPIO support" 372 depends on OF 373 select GPIO_GENERIC 374 select IRQ_DOMAIN 375 help 376 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 377 VHDL IP core library. 378 379config GPIO_TB10X 380 bool 381 select OF_GPIO 382 383comment "I2C GPIO expanders:" 384 385config GPIO_ARIZONA 386 tristate "Wolfson Microelectronics Arizona class devices" 387 depends on MFD_ARIZONA 388 help 389 Support for GPIOs on Wolfson Arizona class devices. 390 391config GPIO_MAX7300 392 tristate "Maxim MAX7300 GPIO expander" 393 depends on I2C 394 select GPIO_MAX730X 395 help 396 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 397 398config GPIO_MAX732X 399 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 400 depends on I2C 401 help 402 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 403 Port Expanders. Each IO port on these chips has a fixed role of 404 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 405 Input and Output (designed by 'P'). The combinations are listed 406 below: 407 408 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 409 max7322 (4I4O), max7323 (4P4O) 410 411 16 bits: max7324 (8I8O), max7325 (8P8O), 412 max7326 (4I12O), max7327 (4P12O) 413 414 Board setup code must specify the model to use, and the start 415 number for these GPIOs. 416 417config GPIO_MAX732X_IRQ 418 bool "Interrupt controller support for MAX732x" 419 depends on GPIO_MAX732X=y 420 help 421 Say yes here to enable the max732x to be used as an interrupt 422 controller. It requires the driver to be built in the kernel. 423 424config GPIO_MC9S08DZ60 425 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 426 depends on I2C=y && MACH_MX35_3DS 427 help 428 Select this to enable the MC9S08DZ60 GPIO driver 429 430config GPIO_PCA953X 431 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports" 432 depends on I2C 433 help 434 Say yes here to provide access to several register-oriented 435 SMBus I/O expanders, made mostly by NXP or TI. Compatible 436 models include: 437 438 4 bits: pca9536, pca9537 439 440 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 441 pca9556, pca9557, pca9574, tca6408 442 443 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 444 tca6416 445 446config GPIO_PCA953X_IRQ 447 bool "Interrupt controller support for PCA953x" 448 depends on GPIO_PCA953X=y 449 help 450 Say yes here to enable the pca953x to be used as an interrupt 451 controller. It requires the driver to be built in the kernel. 452 453config GPIO_PCF857X 454 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 455 depends on I2C 456 select IRQ_DOMAIN 457 help 458 Say yes here to provide access to most "quasi-bidirectional" I2C 459 GPIO expanders used for additional digital outputs or inputs. 460 Most of these parts are from NXP, though TI is a second source for 461 some of them. Compatible models include: 462 463 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 464 pca9670, pca9672, pca9674, pca9674a, 465 max7328, max7329 466 467 16 bits: pcf8575, pcf8575c, pca8575, 468 pca9671, pca9673, pca9675 469 470 Your board setup code will need to declare the expanders in 471 use, and assign numbers to the GPIOs they expose. Those GPIOs 472 can then be used from drivers and other kernel code, just like 473 other GPIOs, but only accessible from task contexts. 474 475 This driver provides an in-kernel interface to those GPIOs using 476 platform-neutral GPIO calls. 477 478config GPIO_RC5T583 479 bool "RICOH RC5T583 GPIO" 480 depends on MFD_RC5T583 481 help 482 Select this option to enable GPIO driver for the Ricoh RC5T583 483 chip family. 484 This driver provides the support for driving/reading the gpio pins 485 of RC5T583 device through standard gpio library. 486 487config GPIO_SX150X 488 bool "Semtech SX150x I2C GPIO expander" 489 depends on I2C=y 490 default n 491 help 492 Say yes here to provide support for Semtech SX150-series I2C 493 GPIO expanders. Compatible models include: 494 495 8 bits: sx1508q 496 16 bits: sx1509q 497 498config GPIO_STMPE 499 bool "STMPE GPIOs" 500 depends on MFD_STMPE 501 help 502 This enables support for the GPIOs found on the STMPE I/O 503 Expanders. 504 505config GPIO_STP_XWAY 506 bool "XWAY STP GPIOs" 507 depends on SOC_XWAY 508 help 509 This enables support for the Serial To Parallel (STP) unit found on 510 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 511 that can be up to 24 bit. This peripheral is aimed at driving leds. 512 Some of the gpios/leds can be auto updated by the soc with dsl and 513 phy status. 514 515config GPIO_TC3589X 516 bool "TC3589X GPIOs" 517 depends on MFD_TC3589X 518 help 519 This enables support for the GPIOs found on the TC3589X 520 I/O Expander. 521 522config GPIO_TPS65912 523 tristate "TI TPS65912 GPIO" 524 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 525 help 526 This driver supports TPS65912 gpio chip 527 528config GPIO_TWL4030 529 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 530 depends on TWL4030_CORE 531 help 532 Say yes here to access the GPIO signals of various multi-function 533 power management chips from Texas Instruments. 534 535config GPIO_TWL6040 536 tristate "TWL6040 GPO" 537 depends on TWL6040_CORE 538 help 539 Say yes here to access the GPO signals of twl6040 540 audio chip from Texas Instruments. 541 542config GPIO_WM831X 543 tristate "WM831x GPIOs" 544 depends on MFD_WM831X 545 help 546 Say yes here to access the GPIO signals of WM831x power management 547 chips from Wolfson Microelectronics. 548 549config GPIO_WM8350 550 tristate "WM8350 GPIOs" 551 depends on MFD_WM8350 552 help 553 Say yes here to access the GPIO signals of WM8350 power management 554 chips from Wolfson Microelectronics. 555 556config GPIO_WM8994 557 tristate "WM8994 GPIOs" 558 depends on MFD_WM8994 559 help 560 Say yes here to access the GPIO signals of WM8994 audio hub 561 CODECs from Wolfson Microelectronics. 562 563config GPIO_ADP5520 564 tristate "GPIO Support for ADP5520 PMIC" 565 depends on PMIC_ADP5520 566 help 567 This option enables support for on-chip GPIO found 568 on Analog Devices ADP5520 PMICs. 569 570config GPIO_ADP5588 571 tristate "ADP5588 I2C GPIO expander" 572 depends on I2C 573 help 574 This option enables support for 18 GPIOs found 575 on Analog Devices ADP5588 GPIO Expanders. 576 577config GPIO_ADP5588_IRQ 578 bool "Interrupt controller support for ADP5588" 579 depends on GPIO_ADP5588=y 580 help 581 Say yes here to enable the adp5588 to be used as an interrupt 582 controller. It requires the driver to be built in the kernel. 583 584config GPIO_ADNP 585 tristate "Avionic Design N-bit GPIO expander" 586 depends on I2C && OF_GPIO 587 help 588 This option enables support for N GPIOs found on Avionic Design 589 I2C GPIO expanders. The register space will be extended by powers 590 of two, so the controller will need to accommodate for that. For 591 example: if a controller provides 48 pins, 6 registers will be 592 enough to represent all pins, but the driver will assume a 593 register layout for 64 pins (8 registers). 594 595comment "PCI GPIO expanders:" 596 597config GPIO_CS5535 598 tristate "AMD CS5535/CS5536 GPIO support" 599 depends on PCI && X86 && MFD_CS5535 600 help 601 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 602 can be used for quite a number of things. The CS5535/6 is found on 603 AMD Geode and Lemote Yeeloong devices. 604 605 If unsure, say N. 606 607config GPIO_BT8XX 608 tristate "BT8XX GPIO abuser" 609 depends on PCI && VIDEO_BT848=n 610 help 611 The BT8xx frame grabber chip has 24 GPIO pins than can be abused 612 as a cheap PCI GPIO card. 613 614 This chip can be found on Miro, Hauppauge and STB TV-cards. 615 616 The card needs to be physically altered for using it as a 617 GPIO card. For more information on how to build a GPIO card 618 from a BT8xx TV card, see the documentation file at 619 Documentation/bt8xxgpio.txt 620 621 If unsure, say N. 622 623config GPIO_AMD8111 624 tristate "AMD 8111 GPIO driver" 625 depends on PCI 626 help 627 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 628 629 Note, that usually system firmware/ACPI handles GPIO pins on their 630 own and users might easily break their systems with uncarefull usage 631 of this driver! 632 633 If unsure, say N 634 635config GPIO_INTEL_MID 636 bool "Intel Mid GPIO support" 637 depends on PCI && X86 638 select IRQ_DOMAIN 639 help 640 Say Y here to support Intel Mid GPIO. 641 642config GPIO_PCH 643 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 644 depends on PCI && X86 645 select GENERIC_IRQ_CHIP 646 help 647 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 648 which is an IOH(Input/Output Hub) for x86 embedded processor. 649 This driver can access PCH GPIO device. 650 651 This driver also can be used for LAPIS Semiconductor IOH(Input/ 652 Output Hub), ML7223 and ML7831. 653 ML7223 IOH is for MP(Media Phone) use. 654 ML7831 IOH is for general purpose use. 655 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 656 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 657 658config GPIO_ML_IOH 659 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 660 depends on PCI 661 select GENERIC_IRQ_CHIP 662 help 663 ML7213 is companion chip for Intel Atom E6xx series. 664 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 665 Hub) which is for IVI(In-Vehicle Infotainment) use. 666 This driver can access the IOH's GPIO device. 667 668config GPIO_SODAVILLE 669 bool "Intel Sodaville GPIO support" 670 depends on X86 && PCI && OF 671 select GPIO_GENERIC 672 select GENERIC_IRQ_CHIP 673 help 674 Say Y here to support Intel Sodaville GPIO. 675 676config GPIO_TIMBERDALE 677 bool "Support for timberdale GPIO IP" 678 depends on MFD_TIMBERDALE && HAS_IOMEM 679 ---help--- 680 Add support for the GPIO IP in the timberdale FPGA. 681 682config GPIO_RDC321X 683 tristate "RDC R-321x GPIO support" 684 depends on PCI 685 select MFD_CORE 686 select MFD_RDC321X 687 help 688 Support for the RDC R321x SoC GPIOs over southbridge 689 PCI configuration space. 690 691comment "SPI GPIO expanders:" 692 693config GPIO_MAX7301 694 tristate "Maxim MAX7301 GPIO expander" 695 depends on SPI_MASTER 696 select GPIO_MAX730X 697 help 698 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 699 700config GPIO_MCP23S08 701 tristate "Microchip MCP23xxx I/O expander" 702 depends on (SPI_MASTER && !I2C) || I2C 703 help 704 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 705 I/O expanders. 706 This provides a GPIO interface supporting inputs and outputs. 707 708config GPIO_MC33880 709 tristate "Freescale MC33880 high-side/low-side switch" 710 depends on SPI_MASTER 711 help 712 SPI driver for Freescale MC33880 high-side/low-side switch. 713 This provides GPIO interface supporting inputs and outputs. 714 715config GPIO_74X164 716 tristate "74x164 serial-in/parallel-out 8-bits shift register" 717 depends on SPI_MASTER 718 help 719 Platform driver for 74x164 compatible serial-in/parallel-out 720 8-outputs shift registers. This driver can be used to provide access 721 to more gpio outputs. 722 723comment "AC97 GPIO expanders:" 724 725config GPIO_UCB1400 726 tristate "Philips UCB1400 GPIO" 727 depends on UCB1400_CORE 728 help 729 This enables support for the Philips UCB1400 GPIO pins. 730 The UCB1400 is an AC97 audio codec. 731 732comment "LPC GPIO expanders:" 733 734config GPIO_KEMPLD 735 tristate "Kontron ETX / COMexpress GPIO" 736 depends on MFD_KEMPLD 737 help 738 This enables support for the PLD GPIO interface on some Kontron ETX 739 and COMexpress (ETXexpress) modules. 740 741 This driver can also be built as a module. If so, the module will be 742 called gpio-kempld. 743 744comment "MODULbus GPIO expanders:" 745 746config GPIO_JANZ_TTL 747 tristate "Janz VMOD-TTL Digital IO Module" 748 depends on MFD_JANZ_CMODIO 749 help 750 This enables support for the Janz VMOD-TTL Digital IO module. 751 This driver provides support for driving the pins in output 752 mode only. Input mode is not supported. 753 754config GPIO_PALMAS 755 bool "TI PALMAS series PMICs GPIO" 756 depends on MFD_PALMAS 757 help 758 Select this option to enable GPIO driver for the TI PALMAS 759 series chip family. 760 761config GPIO_TPS6586X 762 bool "TPS6586X GPIO" 763 depends on MFD_TPS6586X 764 help 765 Select this option to enable GPIO driver for the TPS6586X 766 chip family. 767 768config GPIO_TPS65910 769 bool "TPS65910 GPIO" 770 depends on MFD_TPS65910 771 help 772 Select this option to enable GPIO driver for the TPS65910 773 chip family. 774 775config GPIO_MSIC 776 bool "Intel MSIC mixed signal gpio support" 777 depends on MFD_INTEL_MSIC 778 help 779 Enable support for GPIO on intel MSIC controllers found in 780 intel MID devices 781 782config GPIO_BCM_KONA 783 bool "Broadcom Kona GPIO" 784 depends on OF_GPIO 785 help 786 Turn on GPIO support for Broadcom "Kona" chips. 787 788comment "USB GPIO expanders:" 789 790config GPIO_VIPERBOARD 791 tristate "Viperboard GPIO a & b support" 792 depends on MFD_VIPERBOARD && USB 793 help 794 Say yes here to access the GPIO signals of Nano River 795 Technologies Viperboard. There are two GPIO chips on the 796 board: gpioa and gpiob. 797 See viperboard API specification and Nano 798 River Tech's viperboard.h for detailed meaning 799 of the module parameters. 800 801endif 802