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