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