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_XGENE 338 bool "APM X-Gene GPIO controller support" 339 depends on ARM64 && OF_GPIO 340 help 341 This driver is to support the GPIO block within the APM X-Gene SoC 342 platform's generic flash controller. The GPIO pins are muxed with 343 the generic flash controller's address and data pins. Say yes 344 here to enable the GFC GPIO functionality. 345 346config GPIO_XILINX 347 bool "Xilinx GPIO support" 348 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ 349 help 350 Say yes here to support the Xilinx FPGA GPIO device 351 352config GPIO_ZYNQ 353 tristate "Xilinx Zynq GPIO support" 354 depends on ARCH_ZYNQ 355 select GPIOLIB_IRQCHIP 356 help 357 Say yes here to support Xilinx Zynq GPIO controller. 358 359config GPIO_XTENSA 360 bool "Xtensa GPIO32 support" 361 depends on XTENSA 362 depends on HAVE_XTENSA_GPIO32 363 depends on !SMP 364 help 365 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 366 and EXPSTATE (output) ports 367 368config GPIO_VR41XX 369 tristate "NEC VR4100 series General-purpose I/O Uint support" 370 depends on CPU_VR41XX 371 help 372 Say yes here to support the NEC VR4100 series General-purpose I/O Uint 373 374config GPIO_SCH 375 tristate "Intel SCH/TunnelCreek/Centerton GPIO" 376 depends on PCI && X86 377 select MFD_CORE 378 select LPC_SCH 379 help 380 Say yes here to support GPIO interface on Intel Poulsbo SCH, 381 Intel Tunnel Creek processor or Intel Centerton processor. 382 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 383 powered by the core power rail and are turned off during sleep 384 modes (S3 and higher). The remaining four GPIOs are powered by 385 the Intel SCH suspend power supply. These GPIOs remain 386 active during S3. The suspend powered GPIOs can be used to wake the 387 system from the Suspend-to-RAM state. 388 The Intel Tunnel Creek processor has 5 GPIOs powered by the 389 core power rail and 9 from suspend power supply. 390 The Intel Centerton processor has a total of 30 GPIO pins. 391 Twenty-one are powered by the core power rail and 9 from the 392 suspend power supply. 393 394config GPIO_ICH 395 tristate "Intel ICH GPIO" 396 depends on PCI && X86 397 select MFD_CORE 398 select LPC_ICH 399 help 400 Say yes here to support the GPIO functionality of a number of Intel 401 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 402 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg 403 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 404 405 If unsure, say N. 406 407config GPIO_IOP 408 tristate "Intel IOP GPIO" 409 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X) 410 help 411 Say yes here to support the GPIO functionality of a number of Intel 412 IOP32X or IOP33X. 413 414 If unsure, say N. 415 416config GPIO_VX855 417 tristate "VIA VX855/VX875 GPIO" 418 depends on PCI 419 select MFD_CORE 420 select MFD_VX855 421 help 422 Support access to the VX855/VX875 GPIO lines through the gpio library. 423 424 This driver provides common support for accessing the device, 425 additional drivers must be enabled in order to use the 426 functionality of the device. 427 428config GPIO_GE_FPGA 429 bool "GE FPGA based GPIO" 430 depends on GE_FPGA 431 help 432 Support for common GPIO functionality provided on some GE Single Board 433 Computers. 434 435 This driver provides basic support (configure as input or output, read 436 and write pin state) for GPIO implemented in a number of GE single 437 board computers. 438 439config GPIO_LYNXPOINT 440 tristate "Intel Lynxpoint GPIO support" 441 depends on ACPI && X86 442 select GPIOLIB_IRQCHIP 443 help 444 driver for GPIO functionality on Intel Lynxpoint PCH chipset 445 Requires ACPI device enumeration code to set up a platform device. 446 447config GPIO_GRGPIO 448 tristate "Aeroflex Gaisler GRGPIO support" 449 depends on OF 450 select GPIO_GENERIC 451 select IRQ_DOMAIN 452 help 453 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 454 VHDL IP core library. 455 456config GPIO_TB10X 457 bool 458 select GENERIC_IRQ_CHIP 459 select OF_GPIO 460 461comment "I2C GPIO expanders:" 462 463config GPIO_ARIZONA 464 tristate "Wolfson Microelectronics Arizona class devices" 465 depends on MFD_ARIZONA 466 help 467 Support for GPIOs on Wolfson Arizona class devices. 468 469config GPIO_CRYSTAL_COVE 470 tristate "GPIO support for Crystal Cove PMIC" 471 depends on INTEL_SOC_PMIC 472 select GPIOLIB_IRQCHIP 473 help 474 Support for GPIO pins on Crystal Cove PMIC. 475 476 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC 477 inside. 478 479 This driver can also be built as a module. If so, the module will be 480 called gpio-crystalcove. 481 482config GPIO_LP3943 483 tristate "TI/National Semiconductor LP3943 GPIO expander" 484 depends on MFD_LP3943 485 help 486 GPIO driver for LP3943 MFD. 487 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 488 Open drain outputs are required for this usage. 489 490config GPIO_MAX7300 491 tristate "Maxim MAX7300 GPIO expander" 492 depends on I2C 493 select GPIO_MAX730X 494 help 495 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 496 497config GPIO_MAX732X 498 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 499 depends on I2C 500 help 501 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 502 Port Expanders. Each IO port on these chips has a fixed role of 503 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 504 Input and Output (designed by 'P'). The combinations are listed 505 below: 506 507 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 508 max7322 (4I4O), max7323 (4P4O) 509 510 16 bits: max7324 (8I8O), max7325 (8P8O), 511 max7326 (4I12O), max7327 (4P12O) 512 513 Board setup code must specify the model to use, and the start 514 number for these GPIOs. 515 516config GPIO_MAX732X_IRQ 517 bool "Interrupt controller support for MAX732x" 518 depends on GPIO_MAX732X=y 519 help 520 Say yes here to enable the max732x to be used as an interrupt 521 controller. It requires the driver to be built in the kernel. 522 523config GPIO_MC9S08DZ60 524 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions" 525 depends on I2C=y && MACH_MX35_3DS 526 help 527 Select this to enable the MC9S08DZ60 GPIO driver 528 529config GPIO_PCA953X 530 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 531 depends on I2C 532 help 533 Say yes here to provide access to several register-oriented 534 SMBus I/O expanders, made mostly by NXP or TI. Compatible 535 models include: 536 537 4 bits: pca9536, pca9537 538 539 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 540 pca9556, pca9557, pca9574, tca6408, xra1202 541 542 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 543 tca6416 544 545 24 bits: tca6424 546 547 40 bits: pca9505, pca9698 548 549config GPIO_PCA953X_IRQ 550 bool "Interrupt controller support for PCA953x" 551 depends on GPIO_PCA953X=y 552 select GPIOLIB_IRQCHIP 553 help 554 Say yes here to enable the pca953x to be used as an interrupt 555 controller. It requires the driver to be built in the kernel. 556 557config GPIO_PCF857X 558 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 559 depends on I2C 560 select IRQ_DOMAIN 561 help 562 Say yes here to provide access to most "quasi-bidirectional" I2C 563 GPIO expanders used for additional digital outputs or inputs. 564 Most of these parts are from NXP, though TI is a second source for 565 some of them. Compatible models include: 566 567 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 568 pca9670, pca9672, pca9674, pca9674a, 569 max7328, max7329 570 571 16 bits: pcf8575, pcf8575c, pca8575, 572 pca9671, pca9673, pca9675 573 574 Your board setup code will need to declare the expanders in 575 use, and assign numbers to the GPIOs they expose. Those GPIOs 576 can then be used from drivers and other kernel code, just like 577 other GPIOs, but only accessible from task contexts. 578 579 This driver provides an in-kernel interface to those GPIOs using 580 platform-neutral GPIO calls. 581 582config GPIO_RC5T583 583 bool "RICOH RC5T583 GPIO" 584 depends on MFD_RC5T583 585 help 586 Select this option to enable GPIO driver for the Ricoh RC5T583 587 chip family. 588 This driver provides the support for driving/reading the gpio pins 589 of RC5T583 device through standard gpio library. 590 591config GPIO_SX150X 592 bool "Semtech SX150x I2C GPIO expander" 593 depends on I2C=y 594 default n 595 help 596 Say yes here to provide support for Semtech SX150-series I2C 597 GPIO expanders. Compatible models include: 598 599 8 bits: sx1508q 600 16 bits: sx1509q 601 602config GPIO_STMPE 603 bool "STMPE GPIOs" 604 depends on MFD_STMPE 605 select GPIOLIB_IRQCHIP 606 help 607 This enables support for the GPIOs found on the STMPE I/O 608 Expanders. 609 610config GPIO_STP_XWAY 611 bool "XWAY STP GPIOs" 612 depends on SOC_XWAY 613 help 614 This enables support for the Serial To Parallel (STP) unit found on 615 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 616 that can be up to 24 bit. This peripheral is aimed at driving leds. 617 Some of the gpios/leds can be auto updated by the soc with dsl and 618 phy status. 619 620config GPIO_TC3589X 621 bool "TC3589X GPIOs" 622 depends on MFD_TC3589X 623 select GPIOLIB_IRQCHIP 624 help 625 This enables support for the GPIOs found on the TC3589X 626 I/O Expander. 627 628config GPIO_TPS65912 629 tristate "TI TPS65912 GPIO" 630 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) 631 help 632 This driver supports TPS65912 gpio chip 633 634config GPIO_TWL4030 635 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 636 depends on TWL4030_CORE 637 help 638 Say yes here to access the GPIO signals of various multi-function 639 power management chips from Texas Instruments. 640 641config GPIO_TWL6040 642 tristate "TWL6040 GPO" 643 depends on TWL6040_CORE 644 help 645 Say yes here to access the GPO signals of twl6040 646 audio chip from Texas Instruments. 647 648config GPIO_WM831X 649 tristate "WM831x GPIOs" 650 depends on MFD_WM831X 651 help 652 Say yes here to access the GPIO signals of WM831x power management 653 chips from Wolfson Microelectronics. 654 655config GPIO_WM8350 656 tristate "WM8350 GPIOs" 657 depends on MFD_WM8350 658 help 659 Say yes here to access the GPIO signals of WM8350 power management 660 chips from Wolfson Microelectronics. 661 662config GPIO_WM8994 663 tristate "WM8994 GPIOs" 664 depends on MFD_WM8994 665 help 666 Say yes here to access the GPIO signals of WM8994 audio hub 667 CODECs from Wolfson Microelectronics. 668 669config GPIO_ADP5520 670 tristate "GPIO Support for ADP5520 PMIC" 671 depends on PMIC_ADP5520 672 help 673 This option enables support for on-chip GPIO found 674 on Analog Devices ADP5520 PMICs. 675 676config GPIO_ADP5588 677 tristate "ADP5588 I2C GPIO expander" 678 depends on I2C 679 help 680 This option enables support for 18 GPIOs found 681 on Analog Devices ADP5588 GPIO Expanders. 682 683config GPIO_ADP5588_IRQ 684 bool "Interrupt controller support for ADP5588" 685 depends on GPIO_ADP5588=y 686 help 687 Say yes here to enable the adp5588 to be used as an interrupt 688 controller. It requires the driver to be built in the kernel. 689 690config GPIO_ADNP 691 tristate "Avionic Design N-bit GPIO expander" 692 depends on I2C && OF_GPIO 693 select GPIOLIB_IRQCHIP 694 help 695 This option enables support for N GPIOs found on Avionic Design 696 I2C GPIO expanders. The register space will be extended by powers 697 of two, so the controller will need to accommodate for that. For 698 example: if a controller provides 48 pins, 6 registers will be 699 enough to represent all pins, but the driver will assume a 700 register layout for 64 pins (8 registers). 701 702comment "PCI GPIO expanders:" 703 704config GPIO_CS5535 705 tristate "AMD CS5535/CS5536 GPIO support" 706 depends on MFD_CS5535 707 help 708 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 709 can be used for quite a number of things. The CS5535/6 is found on 710 AMD Geode and Lemote Yeeloong devices. 711 712 If unsure, say N. 713 714config GPIO_BT8XX 715 tristate "BT8XX GPIO abuser" 716 depends on PCI && VIDEO_BT848=n 717 help 718 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 719 as a cheap PCI GPIO card. 720 721 This chip can be found on Miro, Hauppauge and STB TV-cards. 722 723 The card needs to be physically altered for using it as a 724 GPIO card. For more information on how to build a GPIO card 725 from a BT8xx TV card, see the documentation file at 726 Documentation/bt8xxgpio.txt 727 728 If unsure, say N. 729 730config GPIO_AMD8111 731 tristate "AMD 8111 GPIO driver" 732 depends on PCI 733 help 734 The AMD 8111 south bridge contains 32 GPIO pins which can be used. 735 736 Note, that usually system firmware/ACPI handles GPIO pins on their 737 own and users might easily break their systems with uncarefull usage 738 of this driver! 739 740 If unsure, say N 741 742config GPIO_INTEL_MID 743 bool "Intel Mid GPIO support" 744 depends on PCI && X86 745 select GPIOLIB_IRQCHIP 746 help 747 Say Y here to support Intel Mid GPIO. 748 749config GPIO_PCH 750 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO" 751 depends on PCI && (X86_32 || COMPILE_TEST) 752 select GENERIC_IRQ_CHIP 753 help 754 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff 755 which is an IOH(Input/Output Hub) for x86 embedded processor. 756 This driver can access PCH GPIO device. 757 758 This driver also can be used for LAPIS Semiconductor IOH(Input/ 759 Output Hub), ML7223 and ML7831. 760 ML7223 IOH is for MP(Media Phone) use. 761 ML7831 IOH is for general purpose use. 762 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 763 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 764 765config GPIO_ML_IOH 766 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 767 depends on PCI 768 select GENERIC_IRQ_CHIP 769 help 770 ML7213 is companion chip for Intel Atom E6xx series. 771 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output 772 Hub) which is for IVI(In-Vehicle Infotainment) use. 773 This driver can access the IOH's GPIO device. 774 775config GPIO_SODAVILLE 776 bool "Intel Sodaville GPIO support" 777 depends on X86 && PCI && OF 778 select GPIO_GENERIC 779 select GENERIC_IRQ_CHIP 780 help 781 Say Y here to support Intel Sodaville GPIO. 782 783config GPIO_TIMBERDALE 784 bool "Support for timberdale GPIO IP" 785 depends on MFD_TIMBERDALE 786 ---help--- 787 Add support for the GPIO IP in the timberdale FPGA. 788 789config GPIO_RDC321X 790 tristate "RDC R-321x GPIO support" 791 depends on PCI 792 select MFD_CORE 793 select MFD_RDC321X 794 help 795 Support for the RDC R321x SoC GPIOs over southbridge 796 PCI configuration space. 797 798comment "SPI GPIO expanders:" 799 800config GPIO_MAX7301 801 tristate "Maxim MAX7301 GPIO expander" 802 depends on SPI_MASTER 803 select GPIO_MAX730X 804 help 805 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 806 807config GPIO_MCP23S08 808 tristate "Microchip MCP23xxx I/O expander" 809 depends on OF_GPIO 810 depends on (SPI_MASTER && !I2C) || I2C 811 help 812 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 813 I/O expanders. 814 This provides a GPIO interface supporting inputs and outputs. 815 The I2C versions of the chips can be used as interrupt-controller. 816 817config GPIO_MC33880 818 tristate "Freescale MC33880 high-side/low-side switch" 819 depends on SPI_MASTER 820 help 821 SPI driver for Freescale MC33880 high-side/low-side switch. 822 This provides GPIO interface supporting inputs and outputs. 823 824config GPIO_74X164 825 tristate "74x164 serial-in/parallel-out 8-bits shift register" 826 depends on SPI_MASTER && OF 827 help 828 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 829 shift registers. This driver can be used to provide access 830 to more gpio outputs. 831 832comment "AC97 GPIO expanders:" 833 834config GPIO_UCB1400 835 tristate "Philips UCB1400 GPIO" 836 depends on UCB1400_CORE 837 help 838 This enables support for the Philips UCB1400 GPIO pins. 839 The UCB1400 is an AC97 audio codec. 840 841comment "LPC GPIO expanders:" 842 843config GPIO_KEMPLD 844 tristate "Kontron ETX / COMexpress GPIO" 845 depends on MFD_KEMPLD 846 help 847 This enables support for the PLD GPIO interface on some Kontron ETX 848 and COMexpress (ETXexpress) modules. 849 850 This driver can also be built as a module. If so, the module will be 851 called gpio-kempld. 852 853comment "MODULbus GPIO expanders:" 854 855config GPIO_JANZ_TTL 856 tristate "Janz VMOD-TTL Digital IO Module" 857 depends on MFD_JANZ_CMODIO 858 help 859 This enables support for the Janz VMOD-TTL Digital IO module. 860 This driver provides support for driving the pins in output 861 mode only. Input mode is not supported. 862 863config GPIO_PALMAS 864 bool "TI PALMAS series PMICs GPIO" 865 depends on MFD_PALMAS 866 help 867 Select this option to enable GPIO driver for the TI PALMAS 868 series chip family. 869 870config GPIO_TPS6586X 871 bool "TPS6586X GPIO" 872 depends on MFD_TPS6586X 873 help 874 Select this option to enable GPIO driver for the TPS6586X 875 chip family. 876 877config GPIO_TPS65910 878 bool "TPS65910 GPIO" 879 depends on MFD_TPS65910 880 help 881 Select this option to enable GPIO driver for the TPS65910 882 chip family. 883 884config GPIO_MSIC 885 bool "Intel MSIC mixed signal gpio support" 886 depends on MFD_INTEL_MSIC 887 help 888 Enable support for GPIO on intel MSIC controllers found in 889 intel MID devices 890 891config GPIO_BCM_KONA 892 bool "Broadcom Kona GPIO" 893 depends on OF_GPIO 894 help 895 Turn on GPIO support for Broadcom "Kona" chips. 896 897comment "USB GPIO expanders:" 898 899config GPIO_VIPERBOARD 900 tristate "Viperboard GPIO a & b support" 901 depends on MFD_VIPERBOARD && USB 902 help 903 Say yes here to access the GPIO signals of Nano River 904 Technologies Viperboard. There are two GPIO chips on the 905 board: gpioa and gpiob. 906 See viperboard API specification and Nano 907 River Tech's viperboard.h for detailed meaning 908 of the module parameters. 909 910endif 911