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 GPIOLIB_IRQCHIP 59 select IRQ_DOMAIN 60 bool 61 62config DEBUG_GPIO 63 bool "Debug GPIO calls" 64 depends on DEBUG_KERNEL 65 help 66 Say Y here to add some extra checks and diagnostics to GPIO calls. 67 These checks help ensure that GPIOs have been properly initialized 68 before they are used, and that sleeping calls are not made from 69 non-sleeping contexts. They can make bitbanged serial protocols 70 slower. The diagnostics help catch the type of setup errors 71 that are most common when setting up new platforms or boards. 72 73config GPIO_SYSFS 74 bool "/sys/class/gpio/... (sysfs interface)" 75 depends on SYSFS 76 help 77 Say Y here to add a sysfs interface for GPIOs. 78 79 This is mostly useful to work around omissions in a system's 80 kernel support. Those are common in custom and semicustom 81 hardware assembled using standard kernels with a minimum of 82 custom patches. In those cases, userspace code may import 83 a given GPIO from the kernel, if no kernel driver requested it. 84 85 Kernel drivers may also request that a particular GPIO be 86 exported to userspace; this can be useful when debugging. 87 88config GPIO_GENERIC 89 tristate 90 91# put drivers in the right section, in alphabetical order 92 93config GPIO_DA9052 94 tristate "Dialog DA9052 GPIO" 95 depends on PMIC_DA9052 96 help 97 Say yes here to enable the GPIO driver for the DA9052 chip. 98 99config GPIO_DA9055 100 tristate "Dialog Semiconductor DA9055 GPIO" 101 depends on MFD_DA9055 102 help 103 Say yes here to enable the GPIO driver for the DA9055 chip. 104 105 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 106 be controller by this driver. 107 108 If driver is built as a module it will be called gpio-da9055. 109 110config GPIO_MAX730X 111 tristate 112 113comment "Memory mapped GPIO drivers:" 114 115config GPIO_CLPS711X 116 tristate "CLPS711X GPIO support" 117 depends on ARCH_CLPS711X || COMPILE_TEST 118 select GPIO_GENERIC 119 help 120 Say yes here to support GPIO on CLPS711X SoCs. 121 122config GPIO_DAVINCI 123 bool "TI Davinci/Keystone GPIO support" 124 default y if ARCH_DAVINCI 125 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE) 126 help 127 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 128 129config GPIO_GENERIC_PLATFORM 130 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 131 select GPIO_GENERIC 132 help 133 Say yes here to support basic platform_device memory-mapped GPIO controllers. 134 135config GPIO_DWAPB 136 tristate "Synopsys DesignWare APB GPIO driver" 137 select GPIO_GENERIC 138 select GENERIC_IRQ_CHIP 139 depends on OF_GPIO 140 help 141 Say Y or M here to build support for the Synopsys DesignWare APB 142 GPIO block. 143 144config GPIO_IT8761E 145 tristate "IT8761E GPIO support" 146 depends on X86 # unconditional access to IO space. 147 help 148 Say yes here to support GPIO functionality of IT8761E super I/O chip. 149 150config GPIO_EM 151 tristate "Emma Mobile GPIO" 152 depends on ARM && OF_GPIO 153 help 154 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 155 156config GPIO_EP93XX 157 def_bool y 158 depends on ARCH_EP93XX 159 select GPIO_GENERIC 160 161config GPIO_ZEVIO 162 bool "LSI ZEVIO SoC memory mapped GPIOs" 163 depends on ARM && OF_GPIO 164 help 165 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 166 167config GPIO_MM_LANTIQ 168 bool "Lantiq Memory mapped GPIOs" 169 depends on LANTIQ && SOC_XWAY 170 help 171 This enables support for memory mapped GPIOs on the External Bus Unit 172 (EBU) found on Lantiq SoCs. The gpios are output only as they are 173 created by attaching a 16bit latch to the bus. 174 175config GPIO_F7188X 176 tristate "F71882FG and F71889F GPIO support" 177 depends on X86 178 help 179 This option enables support for GPIOs found on Fintek Super-I/O 180 chips F71882FG and F71889F. 181 182 To compile this driver as a module, choose M here: the module will 183 be called f7188x-gpio. 184 185config GPIO_MOXART 186 bool "MOXART GPIO support" 187 depends on ARCH_MOXART 188 help 189 Select this option to enable GPIO driver for 190 MOXA ART SoC devices. 191 192config GPIO_MPC5200 193 def_bool y 194 depends on PPC_MPC52xx 195 196config GPIO_MPC8XXX 197 bool "MPC512x/MPC8xxx GPIO support" 198 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 199 FSL_SOC_BOOKE || PPC_86xx 200 help 201 Say Y here if you're going to use hardware that connects to the 202 MPC512x/831x/834x/837x/8572/8610 GPIOs. 203 204config GPIO_MSM_V1 205 tristate "Qualcomm MSM GPIO v1" 206 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) 207 help 208 Say yes here to support the GPIO interface on ARM v6 based 209 Qualcomm MSM chips. Most of the pins on the MSM can be 210 selected for GPIO, and are controlled by this driver. 211 212config GPIO_MSM_V2 213 tristate "Qualcomm MSM GPIO v2" 214 depends on GPIOLIB && OF && ARCH_QCOM 215 help 216 Say yes here to support the GPIO interface on ARM v7 based 217 Qualcomm MSM chips. Most of the pins on the MSM can be 218 selected for GPIO, and are controlled by this driver. 219 220config GPIO_MVEBU 221 def_bool y 222 depends on PLAT_ORION 223 depends on OF 224 select GPIO_GENERIC 225 select GENERIC_IRQ_CHIP 226 227config GPIO_MXC 228 def_bool y 229 depends on ARCH_MXC 230 select GPIO_GENERIC 231 select GENERIC_IRQ_CHIP 232 233config GPIO_MXS 234 def_bool y 235 depends on ARCH_MXS 236 select GPIO_GENERIC 237 select GENERIC_IRQ_CHIP 238 239config GPIO_OCTEON 240 tristate "Cavium OCTEON GPIO" 241 depends on GPIOLIB && CAVIUM_OCTEON_SOC 242 default y 243 help 244 Say yes here to support the on-chip GPIO lines on the OCTEON 245 family of SOCs. 246 247config GPIO_OMAP 248 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS 249 default y if ARCH_OMAP 250 depends on ARM 251 select GENERIC_IRQ_CHIP 252 select GPIOLIB_IRQCHIP 253 help 254 Say yes here to enable GPIO support for TI OMAP SoCs. 255 256config GPIO_PL061 257 bool "PrimeCell PL061 GPIO support" 258 depends on ARM_AMBA 259 select IRQ_DOMAIN 260 select GPIOLIB_IRQCHIP 261 help 262 Say yes here to support the PrimeCell PL061 GPIO device 263 264config GPIO_PXA 265 bool "PXA GPIO support" 266 depends on ARCH_PXA || ARCH_MMP 267 help 268 Say yes here to support the PXA GPIO device 269 270config GPIO_RCAR 271 tristate "Renesas R-Car GPIO" 272 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST) 273 help 274 Say yes here to support GPIO on Renesas R-Car SoCs. 275 276config GPIO_SAMSUNG 277 bool 278 depends on PLAT_SAMSUNG 279 help 280 Legacy GPIO support. Use only for platforms without support for 281 pinctrl. 282 283config GPIO_SCH311X 284 tristate "SMSC SCH311x SuperI/O GPIO" 285 help 286 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 287 SCH3116 "Super I/O" chipsets. 288 289 To compile this driver as a module, choose M here: the module will 290 be called gpio-sch311x. 291 292config GPIO_SPEAR_SPICS 293 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 294 depends on PLAT_SPEAR 295 select GENERIC_IRQ_CHIP 296 help 297 Say yes here to support ST SPEAr SPI Chip Select as GPIO device 298 299config GPIO_STA2X11 300 bool "STA2x11/ConneXt GPIO support" 301 depends on MFD_STA2X11 302 select GENERIC_IRQ_CHIP 303 help 304 Say yes here to support the STA2x11/ConneXt GPIO device. 305 The GPIO module has 128 GPIO pins with alternate functions. 306 307config GPIO_SYSCON 308 tristate "GPIO based on SYSCON" 309 depends on MFD_SYSCON && OF 310 help 311 Say yes here to support GPIO functionality though SYSCON driver. 312 313config GPIO_TS5500 314 tristate "TS-5500 DIO blocks and compatibles" 315 depends on TS5500 || COMPILE_TEST 316 help 317 This driver supports Digital I/O exposed by pin blocks found on some 318 Technologic Systems platforms. It includes, but is not limited to, 3 319 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 320 LCD port. 321 322config GPIO_TZ1090 323 bool "Toumaz Xenif TZ1090 GPIO support" 324 depends on SOC_TZ1090 325 select GENERIC_IRQ_CHIP 326 default y 327 help 328 Say yes here to support Toumaz Xenif TZ1090 GPIOs. 329 330config GPIO_TZ1090_PDC 331 bool "Toumaz Xenif TZ1090 PDC GPIO support" 332 depends on SOC_TZ1090 333 default y 334 help 335 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs. 336 337config GPIO_XILINX 338 bool "Xilinx GPIO support" 339 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 340 help 341 Say yes here to support the Xilinx FPGA GPIO device 342 343config GPIO_ZYNQ 344 tristate "Xilinx Zynq GPIO support" 345 depends on ARCH_ZYNQ 346 select GPIOLIB_IRQCHIP 347 help 348 Say yes here to support Xilinx Zynq GPIO controller. 349 350config GPIO_XTENSA 351 bool "Xtensa GPIO32 support" 352 depends on XTENSA 353 depends on HAVE_XTENSA_GPIO32 354 depends on !SMP 355 help 356 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 357 and EXPSTATE (output) ports 358 359config GPIO_VR41XX 360 tristate "NEC VR4100 series General-purpose I/O Uint support" 361 depends on CPU_VR41XX 362 help 363 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 364 365config GPIO_SCH 366 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 367 depends on PCI && X86 368 select MFD_CORE 369 select LPC_SCH 370 help 371 Say yes here to support GPIO interface on Intel Poulsbo SCH, 372 Intel Tunnel Creek processor or Intel Centerton processor. 373 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 374 powered by the core power rail and are turned off during sleep 375 modes (S3 and higher). The remaining four GPIOs are powered by 376 the Intel SCH suspend power supply. These GPIOs remain 377 active during S3. The suspend powered GPIOs can be used to wake the 378 system from the Suspend-to-RAM state. 379 The Intel Tunnel Creek processor has 5 GPIOs powered by the 380 core power rail and 9 from suspend power supply. 381 The Intel Centerton processor has a total of 30 GPIO pins. 382 Twenty-one are powered by the core power rail and 9 from the 383 suspend power supply. 384 385config GPIO_ICH 386 tristate "Intel ICH GPIO" 387 depends on PCI && X86 388 select MFD_CORE 389 select LPC_ICH 390 help 391 Say yes here to support the GPIO functionality of a number of Intel 392 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 393 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 394 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 395 396 If unsure, say N. 397 398config GPIO_IOP 399 tristate "Intel IOP GPIO" 400 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 401 help 402 Say yes here to support the GPIO functionality of a number of Intel 403 IOP32X or IOP33X. 404 405 If unsure, say N. 406 407config GPIO_VX855 408 tristate "VIA VX855/VX875 GPIO" 409 depends on PCI 410 select MFD_CORE 411 select MFD_VX855 412 help 413 Support access to the VX855/VX875 GPIO lines through the gpio library. 414 415 This driver provides common support for accessing the device, 416 additional drivers must be enabled in order to use the 417 functionality of the device. 418 419config GPIO_GE_FPGA 420 bool "GE FPGA based GPIO" 421 depends on GE_FPGA 422 help 423 Support for common GPIO functionality provided on some GE Single Board 424 Computers. 425 426 This driver provides basic support (configure as input or output, read 427 and write pin state) for GPIO implemented in a number of GE single 428 board computers. 429 430config GPIO_LYNXPOINT 431 tristate "Intel Lynxpoint GPIO support" 432 depends on ACPI && X86 433 select GPIOLIB_IRQCHIP 434 help 435 driver for GPIO functionality on Intel Lynxpoint PCH chipset 436 Requires ACPI device enumeration code to set up a platform device. 437 438config GPIO_GRGPIO 439 tristate "Aeroflex Gaisler GRGPIO support" 440 depends on OF 441 select GPIO_GENERIC 442 select IRQ_DOMAIN 443 help 444 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 445 VHDL IP core library. 446 447config GPIO_TB10X 448 bool 449 select GENERIC_IRQ_CHIP 450 select OF_GPIO 451 452comment "I2C GPIO expanders:" 453 454config GPIO_ARIZONA 455 tristate "Wolfson Microelectronics Arizona class devices" 456 depends on MFD_ARIZONA 457 help 458 Support for GPIOs on Wolfson Arizona class devices. 459 460config GPIO_CRYSTAL_COVE 461 tristate "GPIO support for Crystal Cove PMIC" 462 depends on INTEL_SOC_PMIC 463 select GPIOLIB_IRQCHIP 464 help 465 Support for GPIO pins on Crystal Cove PMIC. 466 467 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 468 inside. 469 470 This driver can also be built as a module. If so, the module will be 471 called gpio-crystalcove. 472 473config GPIO_LP3943 474 tristate "TI/National Semiconductor LP3943 GPIO expander" 475 depends on MFD_LP3943 476 help 477 GPIO driver for LP3943 MFD. 478 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 479 Open drain outputs are required for this usage. 480 481config GPIO_MAX7300 482 tristate "Maxim MAX7300 GPIO expander" 483 depends on I2C 484 select GPIO_MAX730X 485 help 486 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 487 488config GPIO_MAX732X 489 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 490 depends on I2C 491 help 492 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 493 Port Expanders. Each IO port on these chips has a fixed role of 494 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 495 Input and Output (designed by 'P'). The combinations are listed 496 below: 497 498 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 499 max7322 (4I4O), max7323 (4P4O) 500 501 16 bits: max7324 (8I8O), max7325 (8P8O), 502 max7326 (4I12O), max7327 (4P12O) 503 504 Board setup code must specify the model to use, and the start 505 number for these GPIOs. 506 507config GPIO_MAX732X_IRQ 508 bool "Interrupt controller support for MAX732x" 509 depends on GPIO_MAX732X=y 510 help 511 Say yes here to enable the max732x to be used as an interrupt 512 controller. It requires the driver to be built in the kernel. 513 514config GPIO_MC9S08DZ60 515 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 516 depends on I2C=y && MACH_MX35_3DS 517 help 518 Select this to enable the MC9S08DZ60 GPIO driver 519 520config GPIO_PCA953X 521 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 522 depends on I2C 523 help 524 Say yes here to provide access to several register-oriented 525 SMBus I/O expanders, made mostly by NXP or TI. Compatible 526 models include: 527 528 4 bits: pca9536, pca9537 529 530 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 531 pca9556, pca9557, pca9574, tca6408, xra1202 532 533 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 534 tca6416 535 536 24 bits: tca6424 537 538 40 bits: pca9505, pca9698 539 540config GPIO_PCA953X_IRQ 541 bool "Interrupt controller support for PCA953x" 542 depends on GPIO_PCA953X=y 543 select GPIOLIB_IRQCHIP 544 help 545 Say yes here to enable the pca953x to be used as an interrupt 546 controller. It requires the driver to be built in the kernel. 547 548config GPIO_PCF857X 549 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 550 depends on I2C 551 select IRQ_DOMAIN 552 help 553 Say yes here to provide access to most "quasi-bidirectional" I2C 554 GPIO expanders used for additional digital outputs or inputs. 555 Most of these parts are from NXP, though TI is a second source for 556 some of them. Compatible models include: 557 558 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 559 pca9670, pca9672, pca9674, pca9674a, 560 max7328, max7329 561 562 16 bits: pcf8575, pcf8575c, pca8575, 563 pca9671, pca9673, pca9675 564 565 Your board setup code will need to declare the expanders in 566 use, and assign numbers to the GPIOs they expose. Those GPIOs 567 can then be used from drivers and other kernel code, just like 568 other GPIOs, but only accessible from task contexts. 569 570 This driver provides an in-kernel interface to those GPIOs using 571 platform-neutral GPIO calls. 572 573config GPIO_RC5T583 574 bool "RICOH RC5T583 GPIO" 575 depends on MFD_RC5T583 576 help 577 Select this option to enable GPIO driver for the Ricoh RC5T583 578 chip family. 579 This driver provides the support for driving/reading the gpio pins 580 of RC5T583 device through standard gpio library. 581 582config GPIO_SX150X 583 bool "Semtech SX150x I2C GPIO expander" 584 depends on I2C=y 585 default n 586 help 587 Say yes here to provide support for Semtech SX150-series I2C 588 GPIO expanders. Compatible models include: 589 590 8 bits: sx1508q 591 16 bits: sx1509q 592 593config GPIO_STMPE 594 bool "STMPE GPIOs" 595 depends on MFD_STMPE 596 select GPIOLIB_IRQCHIP 597 help 598 This enables support for the GPIOs found on the STMPE I/O 599 Expanders. 600 601config GPIO_STP_XWAY 602 bool "XWAY STP GPIOs" 603 depends on SOC_XWAY 604 help 605 This enables support for the Serial To Parallel (STP) unit found on 606 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 607 that can be up to 24 bit. This peripheral is aimed at driving leds. 608 Some of the gpios/leds can be auto updated by the soc with dsl and 609 phy status. 610 611config GPIO_TC3589X 612 bool "TC3589X GPIOs" 613 depends on MFD_TC3589X 614 select GPIOLIB_IRQCHIP 615 help 616 This enables support for the GPIOs found on the TC3589X 617 I/O Expander. 618 619config GPIO_TPS65912 620 tristate "TI TPS65912 GPIO" 621 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 622 help 623 This driver supports TPS65912 gpio chip 624 625config GPIO_TWL4030 626 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 627 depends on TWL4030_CORE 628 help 629 Say yes here to access the GPIO signals of various multi-function 630 power management chips from Texas Instruments. 631 632config GPIO_TWL6040 633 tristate "TWL6040 GPO" 634 depends on TWL6040_CORE 635 help 636 Say yes here to access the GPO signals of twl6040 637 audio chip from Texas Instruments. 638 639config GPIO_WM831X 640 tristate "WM831x GPIOs" 641 depends on MFD_WM831X 642 help 643 Say yes here to access the GPIO signals of WM831x power management 644 chips from Wolfson Microelectronics. 645 646config GPIO_WM8350 647 tristate "WM8350 GPIOs" 648 depends on MFD_WM8350 649 help 650 Say yes here to access the GPIO signals of WM8350 power management 651 chips from Wolfson Microelectronics. 652 653config GPIO_WM8994 654 tristate "WM8994 GPIOs" 655 depends on MFD_WM8994 656 help 657 Say yes here to access the GPIO signals of WM8994 audio hub 658 CODECs from Wolfson Microelectronics. 659 660config GPIO_ADP5520 661 tristate "GPIO Support for ADP5520 PMIC" 662 depends on PMIC_ADP5520 663 help 664 This option enables support for on-chip GPIO found 665 on Analog Devices ADP5520 PMICs. 666 667config GPIO_ADP5588 668 tristate "ADP5588 I2C GPIO expander" 669 depends on I2C 670 help 671 This option enables support for 18 GPIOs found 672 on Analog Devices ADP5588 GPIO Expanders. 673 674config GPIO_ADP5588_IRQ 675 bool "Interrupt controller support for ADP5588" 676 depends on GPIO_ADP5588=y 677 help 678 Say yes here to enable the adp5588 to be used as an interrupt 679 controller. It requires the driver to be built in the kernel. 680 681config GPIO_ADNP 682 tristate "Avionic Design N-bit GPIO expander" 683 depends on I2C && OF_GPIO 684 help 685 This option enables support for N GPIOs found on Avionic Design 686 I2C GPIO expanders. The register space will be extended by powers 687 of two, so the controller will need to accommodate for that. For 688 example: if a controller provides 48 pins, 6 registers will be 689 enough to represent all pins, but the driver will assume a 690 register layout for 64 pins (8 registers). 691 692comment "PCI GPIO expanders:" 693 694config GPIO_CS5535 695 tristate "AMD CS5535/CS5536 GPIO support" 696 depends on MFD_CS5535 697 help 698 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 699 can be used for quite a number of things. The CS5535/6 is found on 700 AMD Geode and Lemote Yeeloong devices. 701 702 If unsure, say N. 703 704config GPIO_BT8XX 705 tristate "BT8XX GPIO abuser" 706 depends on PCI && VIDEO_BT848=n 707 help 708 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 709 as a cheap PCI GPIO card. 710 711 This chip can be found on Miro, Hauppauge and STB TV-cards. 712 713 The card needs to be physically altered for using it as a 714 GPIO card. For more information on how to build a GPIO card 715 from a BT8xx TV card, see the documentation file at 716 Documentation/bt8xxgpio.txt 717 718 If unsure, say N. 719 720config GPIO_AMD8111 721 tristate "AMD 8111 GPIO driver" 722 depends on PCI 723 help 724 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 725 726 Note, that usually system firmware/ACPI handles GPIO pins on their 727 own and users might easily break their systems with uncarefull usage 728 of this driver! 729 730 If unsure, say N 731 732config GPIO_INTEL_MID 733 bool "Intel Mid GPIO support" 734 depends on PCI && X86 735 select GPIOLIB_IRQCHIP 736 help 737 Say Y here to support Intel Mid GPIO. 738 739config GPIO_PCH 740 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 741 depends on PCI && (X86_32 || COMPILE_TEST) 742 select GENERIC_IRQ_CHIP 743 help 744 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 745 which is an IOH(Input/Output Hub) for x86 embedded processor. 746 This driver can access PCH GPIO device. 747 748 This driver also can be used for LAPIS Semiconductor IOH(Input/ 749 Output Hub), ML7223 and ML7831. 750 ML7223 IOH is for MP(Media Phone) use. 751 ML7831 IOH is for general purpose use. 752 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 753 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 754 755config GPIO_ML_IOH 756 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 757 depends on PCI 758 select GENERIC_IRQ_CHIP 759 help 760 ML7213 is companion chip for Intel Atom E6xx series. 761 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 762 Hub) which is for IVI(In-Vehicle Infotainment) use. 763 This driver can access the IOH's GPIO device. 764 765config GPIO_SODAVILLE 766 bool "Intel Sodaville GPIO support" 767 depends on X86 && PCI && OF 768 select GPIO_GENERIC 769 select GENERIC_IRQ_CHIP 770 help 771 Say Y here to support Intel Sodaville GPIO. 772 773config GPIO_TIMBERDALE 774 bool "Support for timberdale GPIO IP" 775 depends on MFD_TIMBERDALE 776 ---help--- 777 Add support for the GPIO IP in the timberdale FPGA. 778 779config GPIO_RDC321X 780 tristate "RDC R-321x GPIO support" 781 depends on PCI 782 select MFD_CORE 783 select MFD_RDC321X 784 help 785 Support for the RDC R321x SoC GPIOs over southbridge 786 PCI configuration space. 787 788comment "SPI GPIO expanders:" 789 790config GPIO_MAX7301 791 tristate "Maxim MAX7301 GPIO expander" 792 depends on SPI_MASTER 793 select GPIO_MAX730X 794 help 795 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 796 797config GPIO_MCP23S08 798 tristate "Microchip MCP23xxx I/O expander" 799 depends on OF_GPIO 800 depends on (SPI_MASTER && !I2C) || I2C 801 help 802 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 803 I/O expanders. 804 This provides a GPIO interface supporting inputs and outputs. 805 The I2C versions of the chips can be used as interrupt-controller. 806 807config GPIO_MC33880 808 tristate "Freescale MC33880 high-side/low-side switch" 809 depends on SPI_MASTER 810 help 811 SPI driver for Freescale MC33880 high-side/low-side switch. 812 This provides GPIO interface supporting inputs and outputs. 813 814config GPIO_74X164 815 tristate "74x164 serial-in/parallel-out 8-bits shift register" 816 depends on SPI_MASTER && OF 817 help 818 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 819 shift registers. This driver can be used to provide access 820 to more gpio outputs. 821 822comment "AC97 GPIO expanders:" 823 824config GPIO_UCB1400 825 tristate "Philips UCB1400 GPIO" 826 depends on UCB1400_CORE 827 help 828 This enables support for the Philips UCB1400 GPIO pins. 829 The UCB1400 is an AC97 audio codec. 830 831comment "LPC GPIO expanders:" 832 833config GPIO_KEMPLD 834 tristate "Kontron ETX / COMexpress GPIO" 835 depends on MFD_KEMPLD 836 help 837 This enables support for the PLD GPIO interface on some Kontron ETX 838 and COMexpress (ETXexpress) modules. 839 840 This driver can also be built as a module. If so, the module will be 841 called gpio-kempld. 842 843comment "MODULbus GPIO expanders:" 844 845config GPIO_JANZ_TTL 846 tristate "Janz VMOD-TTL Digital IO Module" 847 depends on MFD_JANZ_CMODIO 848 help 849 This enables support for the Janz VMOD-TTL Digital IO module. 850 This driver provides support for driving the pins in output 851 mode only. Input mode is not supported. 852 853config GPIO_PALMAS 854 bool "TI PALMAS series PMICs GPIO" 855 depends on MFD_PALMAS 856 help 857 Select this option to enable GPIO driver for the TI PALMAS 858 series chip family. 859 860config GPIO_TPS6586X 861 bool "TPS6586X GPIO" 862 depends on MFD_TPS6586X 863 help 864 Select this option to enable GPIO driver for the TPS6586X 865 chip family. 866 867config GPIO_TPS65910 868 bool "TPS65910 GPIO" 869 depends on MFD_TPS65910 870 help 871 Select this option to enable GPIO driver for the TPS65910 872 chip family. 873 874config GPIO_MSIC 875 bool "Intel MSIC mixed signal gpio support" 876 depends on MFD_INTEL_MSIC 877 help 878 Enable support for GPIO on intel MSIC controllers found in 879 intel MID devices 880 881config GPIO_BCM_KONA 882 bool "Broadcom Kona GPIO" 883 depends on OF_GPIO 884 help 885 Turn on GPIO support for Broadcom "Kona" chips. 886 887comment "USB GPIO expanders:" 888 889config GPIO_VIPERBOARD 890 tristate "Viperboard GPIO a & b support" 891 depends on MFD_VIPERBOARD && USB 892 help 893 Say yes here to access the GPIO signals of Nano River 894 Technologies Viperboard. There are two GPIO chips on the 895 board: gpioa and gpiob. 896 See viperboard API specification and Nano 897 River Tech's viperboard.h for detailed meaning 898 of the module parameters. 899 900endif 901