1# SPDX-License-Identifier: GPL-2.0-only 2# 3# GPIO infrastructure and drivers 4# 5 6config ARCH_HAVE_CUSTOM_GPIO_H 7 bool 8 help 9 Selecting this config option from the architecture Kconfig allows 10 the architecture to provide a custom asm/gpio.h implementation 11 overriding the default implementations. New uses of this are 12 strongly discouraged. 13 14menuconfig GPIOLIB 15 bool "GPIO Support" 16 help 17 This enables GPIO support through the generic GPIO library. 18 You only need to enable this if you also want to enable 19 one or more of the GPIO drivers below. 20 21 If unsure, say N. 22 23if GPIOLIB 24 25config GPIOLIB_FASTPATH_LIMIT 26 int "Maximum number of GPIOs for fast path" 27 range 32 512 28 default 512 29 help 30 This adjusts the point at which certain APIs will switch from 31 using a stack allocated buffer to a dynamically allocated buffer. 32 33 You shouldn't need to change this unless you really need to 34 optimize either stack space or performance. Change this carefully 35 since setting an incorrect value could cause stack corruption. 36 37config OF_GPIO 38 def_bool y 39 depends on OF 40 depends on HAS_IOMEM 41 42config GPIO_ACPI 43 def_bool y 44 depends on ACPI 45 46config GPIOLIB_IRQCHIP 47 select IRQ_DOMAIN 48 bool 49 50config DEBUG_GPIO 51 bool "Debug GPIO calls" 52 depends on DEBUG_KERNEL 53 help 54 Say Y here to add some extra checks and diagnostics to GPIO calls. 55 These checks help ensure that GPIOs have been properly initialized 56 before they are used, and that sleeping calls are not made from 57 non-sleeping contexts. They can make bitbanged serial protocols 58 slower. The diagnostics help catch the type of setup errors 59 that are most common when setting up new platforms or boards. 60 61config GPIO_SYSFS 62 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT 63 depends on SYSFS 64 select GPIO_CDEV # We need to encourage the new ABI 65 help 66 Say Y here to add the legacy sysfs interface for GPIOs. 67 68 This ABI is deprecated. If you want to use GPIO from userspace, 69 use the character device /dev/gpiochipN with the appropriate 70 ioctl() operations instead. 71 72config GPIO_CDEV 73 bool 74 prompt "Character device (/dev/gpiochipN) support" if EXPERT 75 default y 76 help 77 Say Y here to add the character device /dev/gpiochipN interface 78 for GPIOs. The character device allows userspace to control GPIOs 79 using ioctl() operations. 80 81 Only say N if you are sure that the GPIO character device is not 82 required. 83 84 If unsure, say Y. 85 86config GPIO_CDEV_V1 87 bool "Support GPIO ABI Version 1" 88 default y 89 depends on GPIO_CDEV 90 help 91 Say Y here to support version 1 of the GPIO CDEV ABI. 92 93 This ABI version is deprecated. 94 Please use the latest ABI for new developments. 95 96 If unsure, say Y. 97 98config GPIO_GENERIC 99 depends on HAS_IOMEM # Only for IOMEM drivers 100 tristate 101 102config GPIO_REGMAP 103 depends on REGMAP 104 tristate 105 106# put drivers in the right section, in alphabetical order 107 108# This symbol is selected by both I2C and SPI expanders 109config GPIO_MAX730X 110 tristate 111 112menu "Memory mapped GPIO drivers" 113 depends on HAS_IOMEM 114 115config GPIO_74XX_MMIO 116 tristate "GPIO driver for 74xx-ICs with MMIO access" 117 depends on OF_GPIO 118 select GPIO_GENERIC 119 help 120 Say yes here to support GPIO functionality for 74xx-compatible ICs 121 with MMIO access. Compatible models include: 122 1 bit: 741G125 (Input), 741G74 (Output) 123 2 bits: 742G125 (Input), 7474 (Output) 124 4 bits: 74125 (Input), 74175 (Output) 125 6 bits: 74365 (Input), 74174 (Output) 126 8 bits: 74244 (Input), 74273 (Output) 127 16 bits: 741624 (Input), 7416374 (Output) 128 129config GPIO_ALTERA 130 tristate "Altera GPIO" 131 depends on OF_GPIO 132 select GPIOLIB_IRQCHIP 133 help 134 Say Y or M here to build support for the Altera PIO device. 135 136 If driver is built as a module it will be called gpio-altera. 137 138config GPIO_AMDPT 139 tristate "AMD Promontory GPIO support" 140 depends on ACPI 141 select GPIO_GENERIC 142 help 143 Driver for GPIO functionality on Promontory IOHub. 144 Requires ACPI ASL code to enumerate as a platform device. 145 146config GPIO_ASPEED 147 tristate "Aspeed GPIO support" 148 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 149 select GPIOLIB_IRQCHIP 150 help 151 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers. 152 153config GPIO_ASPEED_SGPIO 154 bool "Aspeed SGPIO support" 155 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 156 select GPIO_GENERIC 157 select GPIOLIB_IRQCHIP 158 help 159 Say Y here to support Aspeed AST2500 SGPIO functionality. 160 161config GPIO_ATH79 162 tristate "Atheros AR71XX/AR724X/AR913X GPIO support" 163 default y if ATH79 164 depends on ATH79 || COMPILE_TEST 165 select GPIO_GENERIC 166 select GPIOLIB_IRQCHIP 167 help 168 Select this option to enable GPIO driver for 169 Atheros AR71XX/AR724X/AR913X SoC devices. 170 171config GPIO_RASPBERRYPI_EXP 172 tristate "Raspberry Pi 3 GPIO Expander" 173 default RASPBERRYPI_FIRMWARE 174 depends on OF_GPIO 175 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only 176 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE. 177 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) 178 help 179 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using 180 the firmware mailbox to communicate with VideoCore on BCM283x chips. 181 182config GPIO_BCM_KONA 183 bool "Broadcom Kona GPIO" 184 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) 185 help 186 Turn on GPIO support for Broadcom "Kona" chips. 187 188config GPIO_BCM_XGS_IPROC 189 tristate "BRCM XGS iProc GPIO support" 190 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) 191 select GPIO_GENERIC 192 select GPIOLIB_IRQCHIP 193 default ARCH_BCM_IPROC 194 help 195 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs. 196 197config GPIO_BRCMSTB 198 tristate "BRCMSTB GPIO support" 199 default y if (ARCH_BRCMSTB || BMIPS_GENERIC) 200 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST) 201 select GPIO_GENERIC 202 select IRQ_DOMAIN 203 help 204 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. 205 206config GPIO_CADENCE 207 tristate "Cadence GPIO support" 208 depends on OF_GPIO 209 select GPIO_GENERIC 210 select GPIOLIB_IRQCHIP 211 help 212 Say yes here to enable support for Cadence GPIO controller. 213 214config GPIO_CLPS711X 215 tristate "CLPS711X GPIO support" 216 depends on ARCH_CLPS711X || COMPILE_TEST 217 select GPIO_GENERIC 218 help 219 Say yes here to support GPIO on CLPS711X SoCs. 220 221config GPIO_DAVINCI 222 bool "TI Davinci/Keystone GPIO support" 223 default y if ARCH_DAVINCI 224 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3) 225 help 226 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 227 228config GPIO_DWAPB 229 tristate "Synopsys DesignWare APB GPIO driver" 230 select GPIO_GENERIC 231 select GPIOLIB_IRQCHIP 232 help 233 Say Y or M here to build support for the Synopsys DesignWare APB 234 GPIO block. 235 236config GPIO_EIC_SPRD 237 tristate "Spreadtrum EIC support" 238 depends on ARCH_SPRD || COMPILE_TEST 239 depends on OF_GPIO 240 select GPIOLIB_IRQCHIP 241 help 242 Say yes here to support Spreadtrum EIC device. 243 244config GPIO_EM 245 tristate "Emma Mobile GPIO" 246 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO 247 help 248 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 249 250config GPIO_EP93XX 251 def_bool y 252 depends on ARCH_EP93XX 253 select GPIO_GENERIC 254 select GPIOLIB_IRQCHIP 255 256config GPIO_EXAR 257 tristate "Support for GPIO pins on XR17V352/354/358" 258 depends on SERIAL_8250_EXAR 259 select REGMAP_MMIO 260 help 261 Selecting this option will enable handling of GPIO pins present 262 on Exar XR17V352/354/358 chips. 263 264config GPIO_GE_FPGA 265 bool "GE FPGA based GPIO" 266 depends on GE_FPGA 267 select GPIO_GENERIC 268 help 269 Support for common GPIO functionality provided on some GE Single Board 270 Computers. 271 272 This driver provides basic support (configure as input or output, read 273 and write pin state) for GPIO implemented in a number of GE single 274 board computers. 275 276config GPIO_FTGPIO010 277 bool "Faraday FTGPIO010 GPIO" 278 depends on OF_GPIO 279 select GPIO_GENERIC 280 select GPIOLIB_IRQCHIP 281 default (ARCH_GEMINI || ARCH_MOXART) 282 help 283 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in 284 Cortina systems Gemini platforms, Moxa ART and others. 285 286config GPIO_GENERIC_PLATFORM 287 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 288 select GPIO_GENERIC 289 help 290 Say yes here to support basic platform_device memory-mapped GPIO controllers. 291 292config GPIO_GRGPIO 293 tristate "Aeroflex Gaisler GRGPIO support" 294 depends on OF_GPIO 295 select GPIO_GENERIC 296 select IRQ_DOMAIN 297 help 298 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 299 VHDL IP core library. 300 301config GPIO_HISI 302 tristate "HiSilicon GPIO controller driver" 303 depends on (ARM64 && ACPI) || COMPILE_TEST 304 select GPIO_GENERIC 305 select GPIOLIB_IRQCHIP 306 help 307 Say Y or M here to build support for the HiSilicon GPIO controller 308 driver GPIO block. 309 This GPIO controller supports double-edge interrupt and multi-core 310 concurrent access. 311 312config GPIO_HLWD 313 tristate "Nintendo Wii (Hollywood) GPIO" 314 depends on OF_GPIO 315 select GPIO_GENERIC 316 select GPIOLIB_IRQCHIP 317 help 318 Select this to support the GPIO controller of the Nintendo Wii. 319 320 If unsure, say N. 321 322config GPIO_ICH 323 tristate "Intel ICH GPIO" 324 depends on X86 325 depends on LPC_ICH 326 help 327 Say yes here to support the GPIO functionality of a number of Intel 328 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 329 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g. 330 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 331 332 If unsure, say N. 333 334config GPIO_IOP 335 tristate "Intel IOP GPIO" 336 depends on ARCH_IOP32X || COMPILE_TEST 337 select GPIO_GENERIC 338 help 339 Say yes here to support the GPIO functionality of a number of Intel 340 IOP32X or IOP33X series of chips. 341 342 If unsure, say N. 343 344config GPIO_IXP4XX 345 bool "Intel IXP4xx GPIO" 346 depends on ARM # For <asm/mach-types.h> 347 depends on ARCH_IXP4XX 348 select GPIO_GENERIC 349 select GPIOLIB_IRQCHIP 350 select IRQ_DOMAIN_HIERARCHY 351 help 352 Say yes here to support the GPIO functionality of a number of Intel 353 IXP4xx series of chips. 354 355 If unsure, say N. 356config GPIO_LOGICVC 357 tristate "Xylon LogiCVC GPIO support" 358 depends on MFD_SYSCON && OF 359 help 360 Say yes here to support GPIO functionality of the Xylon LogiCVC 361 programmable logic block. 362 363config GPIO_LOONGSON 364 bool "Loongson-2/3 GPIO support" 365 depends on CPU_LOONGSON2EF || CPU_LOONGSON64 366 help 367 Driver for GPIO functionality on Loongson-2F/3A/3B processors. 368 369config GPIO_LPC18XX 370 tristate "NXP LPC18XX/43XX GPIO support" 371 default y if ARCH_LPC18XX 372 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST) 373 select IRQ_DOMAIN_HIERARCHY 374 help 375 Select this option to enable GPIO driver for 376 NXP LPC18XX/43XX devices. 377 378config GPIO_LPC32XX 379 tristate "NXP LPC32XX GPIO support" 380 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST) 381 help 382 Select this option to enable GPIO driver for 383 NXP LPC32XX devices. 384 385config GPIO_MB86S7X 386 tristate "GPIO support for Fujitsu MB86S7x Platforms" 387 help 388 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 389 390config GPIO_MENZ127 391 tristate "MEN 16Z127 GPIO support" 392 depends on MCB 393 select GPIO_GENERIC 394 help 395 Say yes here to support the MEN 16Z127 GPIO Controller. 396 397config GPIO_MM_LANTIQ 398 bool "Lantiq Memory mapped GPIOs" 399 depends on LANTIQ && SOC_XWAY 400 help 401 This enables support for memory mapped GPIOs on the External Bus Unit 402 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are 403 created by attaching a 16-bit latch to the bus. 404 405config GPIO_MPC5200 406 def_bool y 407 depends on PPC_MPC52xx 408 409config GPIO_MPC8XXX 410 bool "MPC512x/MPC8xxx/QorIQ GPIO support" 411 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 412 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \ 413 COMPILE_TEST 414 select GPIO_GENERIC 415 select IRQ_DOMAIN 416 help 417 Say Y here if you're going to use hardware that connects to the 418 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs. 419 420config GPIO_MT7621 421 bool "Mediatek MT7621 GPIO Support" 422 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST 423 depends on OF_GPIO 424 select GPIO_GENERIC 425 select GPIOLIB_IRQCHIP 426 help 427 Say yes here to support the Mediatek MT7621 SoC GPIO device. 428 429config GPIO_MVEBU 430 def_bool y 431 depends on PLAT_ORION || ARCH_MVEBU 432 depends on OF_GPIO 433 select GENERIC_IRQ_CHIP 434 select REGMAP_MMIO 435 436config GPIO_MXC 437 tristate "i.MX GPIO support" 438 depends on ARCH_MXC || COMPILE_TEST 439 select GPIO_GENERIC 440 select GENERIC_IRQ_CHIP 441 442config GPIO_MXS 443 bool "Freescale MXS GPIO support" if COMPILE_TEST 444 depends on ARCH_MXS || COMPILE_TEST 445 default y if ARCH_MXS 446 select GPIO_GENERIC 447 select GENERIC_IRQ_CHIP 448 449config GPIO_OCTEON 450 tristate "Cavium OCTEON GPIO" 451 depends on CAVIUM_OCTEON_SOC 452 default y 453 help 454 Say yes here to support the on-chip GPIO lines on the OCTEON 455 family of SOCs. 456 457config GPIO_OMAP 458 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST 459 default y if ARCH_OMAP 460 depends on ARM 461 select GENERIC_IRQ_CHIP 462 select GPIOLIB_IRQCHIP 463 help 464 Say yes here to enable GPIO support for TI OMAP SoCs. 465 466config GPIO_PL061 467 tristate "PrimeCell PL061 GPIO support" 468 depends on ARM_AMBA 469 select IRQ_DOMAIN 470 select GPIOLIB_IRQCHIP 471 help 472 Say yes here to support the PrimeCell PL061 GPIO device. 473 474config GPIO_PMIC_EIC_SPRD 475 tristate "Spreadtrum PMIC EIC support" 476 depends on MFD_SC27XX_PMIC || COMPILE_TEST 477 depends on OF_GPIO 478 select GPIOLIB_IRQCHIP 479 help 480 Say yes here to support Spreadtrum PMIC EIC device. 481 482config GPIO_PXA 483 bool "PXA GPIO support" 484 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST 485 help 486 Say yes here to support the PXA GPIO device. 487 488config GPIO_RCAR 489 tristate "Renesas R-Car and RZ/G GPIO support" 490 depends on ARCH_RENESAS || COMPILE_TEST 491 select GPIOLIB_IRQCHIP 492 help 493 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs. 494 495config GPIO_RDA 496 bool "RDA Micro GPIO controller support" 497 depends on ARCH_RDA || COMPILE_TEST 498 depends on OF_GPIO 499 select GPIO_GENERIC 500 select GPIOLIB_IRQCHIP 501 help 502 Say Y here to support RDA Micro GPIO controller. 503 504config GPIO_REALTEK_OTTO 505 tristate "Realtek Otto GPIO support" 506 depends on MACH_REALTEK_RTL 507 default MACH_REALTEK_RTL 508 select GPIO_GENERIC 509 select GPIOLIB_IRQCHIP 510 help 511 The GPIO controller on the Otto MIPS platform supports up to two 512 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs 513 are grouped in four 8-bit wide ports. 514 515 When built as a module, the module will be called realtek_otto_gpio. 516 517config GPIO_REG 518 bool 519 help 520 A 32-bit single register GPIO fixed in/out implementation. This 521 can be used to represent any register as a set of GPIO signals. 522 523config GPIO_ROCKCHIP 524 tristate "Rockchip GPIO support" 525 depends on ARCH_ROCKCHIP || COMPILE_TEST 526 select GENERIC_IRQ_CHIP 527 select GPIOLIB_IRQCHIP 528 default ARCH_ROCKCHIP 529 help 530 Say yes here to support GPIO on Rockchip SoCs. 531 532config GPIO_SAMA5D2_PIOBU 533 tristate "SAMA5D2 PIOBU GPIO support" 534 depends on MFD_SYSCON 535 depends on OF_GPIO 536 select GPIO_SYSCON 537 help 538 Say yes here to use the PIOBU pins as GPIOs. 539 540 PIOBU pins on the SAMA5D2 can be used as GPIOs. 541 The difference from regular GPIOs is that they 542 maintain their value during backup/self-refresh. 543 544config GPIO_SIFIVE 545 bool "SiFive GPIO support" 546 depends on OF_GPIO 547 select IRQ_DOMAIN_HIERARCHY 548 select GPIO_GENERIC 549 select GPIOLIB_IRQCHIP 550 select REGMAP_MMIO 551 help 552 Say yes here to support the GPIO device on SiFive SoCs. 553 554config GPIO_SIOX 555 tristate "SIOX GPIO support" 556 depends on SIOX 557 select GPIOLIB_IRQCHIP 558 help 559 Say yes here to support SIOX I/O devices. These are units connected 560 via a SIOX bus and have a number of fixed-direction I/O lines. 561 562config GPIO_SNPS_CREG 563 bool "Synopsys GPIO via CREG (Control REGisters) driver" 564 depends on ARC || COMPILE_TEST 565 depends on OF_GPIO 566 help 567 This driver supports GPIOs via CREG on various Synopsys SoCs. 568 This is a single-register MMIO GPIO driver for complex cases 569 where only several fields in register belong to GPIO lines and 570 each GPIO line owns a field with different length and on/off value. 571 572config GPIO_SPEAR_SPICS 573 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 574 depends on PLAT_SPEAR 575 select GENERIC_IRQ_CHIP 576 help 577 Say yes here to support ST SPEAr SPI Chip Select as GPIO device. 578 579config GPIO_SPRD 580 tristate "Spreadtrum GPIO support" 581 depends on ARCH_SPRD || COMPILE_TEST 582 depends on OF_GPIO 583 select GPIOLIB_IRQCHIP 584 help 585 Say yes here to support Spreadtrum GPIO device. 586 587config GPIO_STA2X11 588 bool "STA2x11/ConneXt GPIO support" 589 depends on MFD_STA2X11 590 select GENERIC_IRQ_CHIP 591 help 592 Say yes here to support the STA2x11/ConneXt GPIO device. 593 The GPIO module has 128 GPIO pins with alternate functions. 594 595config GPIO_STP_XWAY 596 bool "XWAY STP GPIOs" 597 depends on SOC_XWAY || COMPILE_TEST 598 depends on OF_GPIO 599 help 600 This enables support for the Serial To Parallel (STP) unit found on 601 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 602 that can be up to 24 bits. This peripheral is aimed at driving LEDs. 603 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and 604 phy status. 605 606config GPIO_SYSCON 607 tristate "GPIO based on SYSCON" 608 depends on MFD_SYSCON && OF 609 help 610 Say yes here to support GPIO functionality though SYSCON driver. 611 612config GPIO_TB10X 613 bool 614 select GPIO_GENERIC 615 select GENERIC_IRQ_CHIP 616 select OF_GPIO 617 618config GPIO_TEGRA 619 tristate "NVIDIA Tegra GPIO support" 620 default ARCH_TEGRA 621 depends on ARCH_TEGRA || COMPILE_TEST 622 depends on OF_GPIO 623 select GPIOLIB_IRQCHIP 624 select IRQ_DOMAIN_HIERARCHY 625 help 626 Say yes here to support GPIO pins on NVIDIA Tegra SoCs. 627 628config GPIO_TEGRA186 629 tristate "NVIDIA Tegra186 GPIO support" 630 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC 631 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST 632 depends on OF_GPIO 633 select GPIOLIB_IRQCHIP 634 select IRQ_DOMAIN_HIERARCHY 635 help 636 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs. 637 638config GPIO_TS4800 639 tristate "TS-4800 DIO blocks and compatibles" 640 depends on OF_GPIO 641 depends on SOC_IMX51 || COMPILE_TEST 642 select GPIO_GENERIC 643 help 644 This driver support TS-4800 FPGA GPIO controllers. 645 646config GPIO_THUNDERX 647 tristate "Cavium ThunderX/OCTEON-TX GPIO" 648 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST) 649 depends on PCI_MSI 650 select GPIOLIB_IRQCHIP 651 select IRQ_DOMAIN_HIERARCHY 652 select IRQ_FASTEOI_HIERARCHY_HANDLERS 653 help 654 Say yes here to support the on-chip GPIO lines on the ThunderX 655 and OCTEON-TX families of SoCs. 656 657config GPIO_UNIPHIER 658 tristate "UniPhier GPIO support" 659 depends on ARCH_UNIPHIER || COMPILE_TEST 660 depends on OF_GPIO 661 select IRQ_DOMAIN_HIERARCHY 662 help 663 Say yes here to support UniPhier GPIOs. 664 665config GPIO_VF610 666 def_bool y 667 depends on ARCH_MXC && SOC_VF610 668 select GPIOLIB_IRQCHIP 669 help 670 Say yes here to support Vybrid vf610 GPIOs. 671 672config GPIO_VISCONTI 673 tristate "Toshiba Visconti GPIO support" 674 depends on ARCH_VISCONTI || COMPILE_TEST 675 depends on OF_GPIO 676 select GPIOLIB_IRQCHIP 677 select GPIO_GENERIC 678 select IRQ_DOMAIN_HIERARCHY 679 help 680 Say yes here to support GPIO on Tohisba Visconti. 681 682config GPIO_VR41XX 683 tristate "NEC VR4100 series General-purpose I/O Unit support" 684 depends on CPU_VR41XX 685 help 686 Say yes here to support the NEC VR4100 series General-purpose I/O Unit. 687 688config GPIO_VX855 689 tristate "VIA VX855/VX875 GPIO" 690 depends on (X86 || COMPILE_TEST) && PCI 691 select MFD_CORE 692 select MFD_VX855 693 help 694 Support access to the VX855/VX875 GPIO lines through the GPIO library. 695 696 This driver provides common support for accessing the device. 697 Additional drivers must be enabled in order to use the 698 functionality of the device. 699 700config GPIO_WCD934X 701 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver" 702 depends on MFD_WCD934X && OF_GPIO 703 help 704 This driver is to support GPIO block found on the Qualcomm Technologies 705 Inc WCD9340/WCD9341 Audio Codec. 706 707config GPIO_XGENE 708 bool "APM X-Gene GPIO controller support" 709 depends on ARM64 && OF_GPIO 710 help 711 This driver is to support the GPIO block within the APM X-Gene SoC 712 platform's generic flash controller. The GPIO pins are muxed with 713 the generic flash controller's address and data pins. Say yes 714 here to enable the GFC GPIO functionality. 715 716config GPIO_XGENE_SB 717 tristate "APM X-Gene GPIO standby controller support" 718 depends on (ARCH_XGENE || COMPILE_TEST) 719 select GPIO_GENERIC 720 select GPIOLIB_IRQCHIP 721 select IRQ_DOMAIN_HIERARCHY 722 help 723 This driver supports the GPIO block within the APM X-Gene 724 Standby Domain. Say yes here to enable the GPIO functionality. 725 726config GPIO_XILINX 727 tristate "Xilinx GPIO support" 728 select GPIOLIB_IRQCHIP 729 depends on OF_GPIO 730 help 731 Say yes here to support the Xilinx FPGA GPIO device. 732 733config GPIO_XLP 734 tristate "Cavium ThunderX2 GPIO support" 735 depends on ARCH_THUNDER2 || COMPILE_TEST 736 select GPIOLIB_IRQCHIP 737 help 738 This driver provides support for GPIO interface on Cavium's ThunderX2 739 CN99XX SoCs (Originally from Netlogic XLP). 740 741 If unsure, say N. 742 743config GPIO_XTENSA 744 bool "Xtensa GPIO32 support" 745 depends on XTENSA 746 depends on HAVE_XTENSA_GPIO32 747 depends on !SMP 748 help 749 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 750 and EXPSTATE (output) ports. 751 752config GPIO_ZEVIO 753 bool "LSI ZEVIO SoC memory mapped GPIOs" 754 depends on ARM && OF_GPIO 755 help 756 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 757 758config GPIO_ZYNQ 759 tristate "Xilinx Zynq GPIO support" 760 depends on ARCH_ZYNQ || ARCH_ZYNQMP 761 select GPIOLIB_IRQCHIP 762 help 763 Say yes here to support Xilinx Zynq GPIO controller. 764 765config GPIO_ZYNQMP_MODEPIN 766 tristate "ZynqMP ps-mode pin GPIO configuration driver" 767 depends on ZYNQMP_FIRMWARE 768 default ZYNQMP_FIRMWARE 769 help 770 Say yes here to support the ZynqMP ps-mode pin GPIO configuration 771 driver. 772 773 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE 774 is 4-bits boot mode pins. It sets and gets the status of 775 the ps-mode pin. Every pin can be configured as input/output. 776 777config GPIO_LOONGSON1 778 tristate "Loongson1 GPIO support" 779 depends on MACH_LOONGSON32 780 select GPIO_GENERIC 781 help 782 Say Y or M here to support GPIO on Loongson1 SoCs. 783 784config GPIO_AMD_FCH 785 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" 786 help 787 This option enables driver for GPIO on AMD's Fusion Controller Hub, 788 as found on G-series SOCs (e.g. GX-412TC). 789 790 Note: This driver doesn't register itself automatically, as it 791 needs to be provided with platform-specific configuration. 792 (See e.g. CONFIG_PCENGINES_APU2.) 793 794config GPIO_MSC313 795 bool "MStar MSC313 GPIO support" 796 depends on ARCH_MSTARV7 797 default ARCH_MSTARV7 798 select GPIOLIB_IRQCHIP 799 select IRQ_DOMAIN_HIERARCHY 800 help 801 Say Y here to support the main GPIO block on MStar/SigmaStar 802 ARMv7-based SoCs. 803 804config GPIO_IDT3243X 805 tristate "IDT 79RC3243X GPIO support" 806 depends on MIKROTIK_RB532 || COMPILE_TEST 807 select GPIO_GENERIC 808 select GPIOLIB_IRQCHIP 809 help 810 Select this option to enable GPIO driver for 811 IDT 79RC3243X-based devices like Mikrotik RB532. 812 813 To compile this driver as a module, choose M here: the module will 814 be called gpio-idt3243x. 815 816endmenu 817 818menu "Port-mapped I/O GPIO drivers" 819 depends on X86 # Unconditional I/O space access 820 821config GPIO_104_DIO_48E 822 tristate "ACCES 104-DIO-48E GPIO support" 823 depends on PC104 824 select ISA_BUS_API 825 select GPIOLIB_IRQCHIP 826 help 827 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E, 828 104-DIO-24E). The base port addresses for the devices may be 829 configured via the base module parameter. The interrupt line numbers 830 for the devices may be configured via the irq module parameter. 831 832config GPIO_104_IDIO_16 833 tristate "ACCES 104-IDIO-16 GPIO support" 834 depends on PC104 835 select ISA_BUS_API 836 select GPIOLIB_IRQCHIP 837 help 838 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16, 839 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The 840 base port addresses for the devices may be configured via the base 841 module parameter. The interrupt line numbers for the devices may be 842 configured via the irq module parameter. 843 844config GPIO_104_IDI_48 845 tristate "ACCES 104-IDI-48 GPIO support" 846 depends on PC104 847 select ISA_BUS_API 848 select GPIOLIB_IRQCHIP 849 help 850 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A, 851 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for 852 the devices may be configured via the base module parameter. The 853 interrupt line numbers for the devices may be configured via the irq 854 module parameter. 855 856config GPIO_F7188X 857 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support" 858 help 859 This option enables support for GPIOs found on Fintek Super-I/O 860 chips F71869, F71869A, F71882FG, F71889F and F81866. 861 862 To compile this driver as a module, choose M here: the module will 863 be called f7188x-gpio. 864 865config GPIO_GPIO_MM 866 tristate "Diamond Systems GPIO-MM GPIO support" 867 depends on PC104 868 select ISA_BUS_API 869 help 870 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12. 871 872 The Diamond Systems GPIO-MM device features 48 lines of digital I/O 873 via the emulation of dual 82C55A PPI chips. This driver provides GPIO 874 support for these 48 channels of digital I/O. 875 876 The base port addresses for the devices may be configured via the base 877 array module parameter. 878 879config GPIO_IT87 880 tristate "IT87xx GPIO support" 881 help 882 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 883 884 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 885 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as 886 well. 887 888 To compile this driver as a module, choose M here: the module will 889 be called gpio_it87. 890 891config GPIO_SCH 892 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 893 depends on (X86 || COMPILE_TEST) && ACPI 894 depends on LPC_SCH 895 select GPIOLIB_IRQCHIP 896 help 897 Say yes here to support GPIO interface on Intel Poulsbo SCH, 898 Intel Tunnel Creek processor, Intel Centerton processor or 899 Intel Quark X1000 SoC. 900 901 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 902 powered by the core power rail and are turned off during sleep 903 modes (S3 and higher). The remaining four GPIOs are powered by 904 the Intel SCH suspend power supply. These GPIOs remain 905 active during S3. The suspend-powered GPIOs can be used to wake the 906 system from the Suspend-to-RAM state. 907 908 The Intel Tunnel Creek processor has 5 GPIOs powered by the 909 core power rail and 9 from suspend power supply. 910 911 The Intel Centerton processor has a total of 30 GPIO pins. 912 Twenty-one are powered by the core power rail and 9 from the 913 suspend power supply. 914 915 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 916 power well and 6 from the suspend power well. 917 918config GPIO_SCH311X 919 tristate "SMSC SCH311x SuperI/O GPIO" 920 help 921 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 922 SCH3116 "Super I/O" chipsets. 923 924 To compile this driver as a module, choose M here: the module will 925 be called gpio-sch311x. 926 927config GPIO_TS5500 928 tristate "TS-5500 DIO blocks and compatibles" 929 depends on TS5500 || COMPILE_TEST 930 help 931 This driver supports Digital I/O exposed by pin blocks found on some 932 Technologic Systems platforms. It includes, but is not limited to, 3 933 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 934 LCD port. 935 936config GPIO_WINBOND 937 tristate "Winbond Super I/O GPIO support" 938 select ISA_BUS_API 939 help 940 This option enables support for GPIOs found on Winbond Super I/O 941 chips. 942 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is 943 supported. 944 945 You will need to provide a module parameter "gpios", or a 946 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO 947 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.). 948 949 To compile this driver as a module, choose M here: the module will 950 be called gpio-winbond. 951 952config GPIO_WS16C48 953 tristate "WinSystems WS16C48 GPIO support" 954 select ISA_BUS_API 955 select GPIOLIB_IRQCHIP 956 help 957 Enables GPIO support for the WinSystems WS16C48. The base port 958 addresses for the devices may be configured via the base module 959 parameter. The interrupt line numbers for the devices may be 960 configured via the irq module parameter. 961 962endmenu 963 964menu "I2C GPIO expanders" 965 depends on I2C 966 967config GPIO_ADP5588 968 tristate "ADP5588 I2C GPIO expander" 969 help 970 This option enables support for 18 GPIOs found 971 on Analog Devices ADP5588 GPIO Expanders. 972 973config GPIO_ADP5588_IRQ 974 bool "Interrupt controller support for ADP5588" 975 depends on GPIO_ADP5588=y 976 select GPIOLIB_IRQCHIP 977 help 978 Say yes here to enable the adp5588 to be used as an interrupt 979 controller. It requires the driver to be built in the kernel. 980 981config GPIO_ADNP 982 tristate "Avionic Design N-bit GPIO expander" 983 depends on OF_GPIO 984 select GPIOLIB_IRQCHIP 985 help 986 This option enables support for N GPIOs found on Avionic Design 987 I2C GPIO expanders. The register space will be extended by powers 988 of two, so the controller will need to accommodate for that. For 989 example: if a controller provides 48 pins, 6 registers will be 990 enough to represent all pins, but the driver will assume a 991 register layout for 64 pins (8 registers). 992 993config GPIO_GW_PLD 994 tristate "Gateworks PLD GPIO Expander" 995 depends on OF_GPIO 996 help 997 Say yes here to provide access to the Gateworks I2C PLD GPIO 998 Expander. This is used at least on the Cambria GW2358-4. 999 1000config GPIO_MAX7300 1001 tristate "Maxim MAX7300 GPIO expander" 1002 select GPIO_MAX730X 1003 help 1004 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 1005 1006config GPIO_MAX732X 1007 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 1008 help 1009 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 1010 Port Expanders. Each IO port on these chips has a fixed role of 1011 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 1012 Input and Output (designed by 'P'). The combinations are listed 1013 below: 1014 1015 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 1016 max7322 (4I4O), max7323 (4P4O) 1017 1018 16 bits: max7324 (8I8O), max7325 (8P8O), 1019 max7326 (4I12O), max7327 (4P12O) 1020 1021 Board setup code must specify the model to use, and the start 1022 number for these GPIOs. 1023 1024config GPIO_MAX732X_IRQ 1025 bool "Interrupt controller support for MAX732x" 1026 depends on GPIO_MAX732X=y 1027 select GPIOLIB_IRQCHIP 1028 help 1029 Say yes here to enable the max732x to be used as an interrupt 1030 controller. It requires the driver to be built in the kernel. 1031 1032config GPIO_PCA953X 1033 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 1034 select REGMAP_I2C 1035 help 1036 Say yes here to provide access to several register-oriented 1037 SMBus I/O expanders, made mostly by NXP or TI. Compatible 1038 models include: 1039 1040 4 bits: pca9536, pca9537 1041 1042 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 1043 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202 1044 1045 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 1046 tca6416 1047 1048 24 bits: tca6424 1049 1050 40 bits: pca9505, pca9698 1051 1052config GPIO_PCA953X_IRQ 1053 bool "Interrupt controller support for PCA953x" 1054 depends on GPIO_PCA953X 1055 select GPIOLIB_IRQCHIP 1056 help 1057 Say yes here to enable the pca953x to be used as an interrupt 1058 controller. 1059 1060config GPIO_PCA9570 1061 tristate "PCA9570 4-Bit I2C GPO expander" 1062 help 1063 Say yes here to enable the GPO driver for the NXP PCA9570 chip. 1064 1065 To compile this driver as a module, choose M here: the module will 1066 be called gpio-pca9570. 1067 1068config GPIO_PCF857X 1069 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 1070 select GPIOLIB_IRQCHIP 1071 select IRQ_DOMAIN 1072 help 1073 Say yes here to provide access to most "quasi-bidirectional" I2C 1074 GPIO expanders used for additional digital outputs or inputs. 1075 Most of these parts are from NXP, though TI is a second source for 1076 some of them. Compatible models include: 1077 1078 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 1079 pca9670, pca9672, pca9674, pca9674a, 1080 max7328, max7329 1081 1082 16 bits: pcf8575, pcf8575c, pca8575, 1083 pca9671, pca9673, pca9675 1084 1085 Your board setup code will need to declare the expanders in 1086 use, and assign numbers to the GPIOs they expose. Those GPIOs 1087 can then be used from drivers and other kernel code, just like 1088 other GPIOs, but only accessible from task contexts. 1089 1090 This driver provides an in-kernel interface to those GPIOs using 1091 platform-neutral GPIO calls. 1092 1093config GPIO_TPIC2810 1094 tristate "TPIC2810 8-Bit I2C GPO expander" 1095 help 1096 Say yes here to enable the GPO driver for the TI TPIC2810 chip. 1097 1098 To compile this driver as a module, choose M here: the module will 1099 be called gpio-tpic2810. 1100 1101config GPIO_TS4900 1102 tristate "Technologic Systems FPGA I2C GPIO" 1103 depends on SOC_IMX6 || COMPILE_TEST 1104 select REGMAP_I2C 1105 help 1106 Say yes here to enabled the GPIO driver for Technologic's FPGA core. 1107 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990. 1108 1109endmenu 1110 1111menu "MFD GPIO expanders" 1112 1113config GPIO_ADP5520 1114 tristate "GPIO Support for ADP5520 PMIC" 1115 depends on PMIC_ADP5520 1116 help 1117 This option enables support for on-chip GPIO found 1118 on Analog Devices ADP5520 PMICs. 1119 1120config GPIO_ALTERA_A10SR 1121 tristate "Altera Arria10 System Resource GPIO" 1122 depends on MFD_ALTERA_A10SR 1123 help 1124 Driver for Arria10 Development Kit GPIO expansion which 1125 includes reads of pushbuttons and DIP switches as well 1126 as writes to LEDs. 1127 1128config GPIO_ARIZONA 1129 tristate "Wolfson Microelectronics Arizona class devices" 1130 depends on MFD_ARIZONA 1131 help 1132 Support for GPIOs on Wolfson Arizona class devices. 1133 1134config GPIO_BD71815 1135 tristate "ROHM BD71815 PMIC GPIO support" 1136 depends on MFD_ROHM_BD71828 1137 help 1138 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs 1139 available on the ROHM PMIC. 1140 1141 This driver can also be built as a module. If so, the module 1142 will be called gpio-bd71815. 1143 1144config GPIO_BD71828 1145 tristate "ROHM BD71828 GPIO support" 1146 depends on MFD_ROHM_BD71828 1147 help 1148 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs 1149 available on the ROHM PMIC in total. The GPIOs are limited to 1150 outputs only and pins must be configured to GPIO outputs by 1151 OTP. Enable this only if you want to use these pins as outputs. 1152 1153 This driver can also be built as a module. If so, the module 1154 will be called gpio-bd71828. 1155 1156config GPIO_BD9571MWV 1157 tristate "ROHM BD9571 GPIO support" 1158 depends on MFD_BD9571MWV 1159 help 1160 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs 1161 available on the ROHM PMIC in total, both of which can also 1162 generate interrupts. 1163 1164 This driver can also be built as a module. If so, the module 1165 will be called gpio-bd9571mwv. 1166 1167config GPIO_CRYSTAL_COVE 1168 tristate "GPIO support for Crystal Cove PMIC" 1169 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC 1170 select GPIOLIB_IRQCHIP 1171 help 1172 Support for GPIO pins on Crystal Cove PMIC. 1173 1174 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC 1175 inside. 1176 1177 This driver can also be built as a module. If so, the module will be 1178 called gpio-crystalcove. 1179 1180config GPIO_CS5535 1181 tristate "AMD CS5535/CS5536 GPIO support" 1182 depends on X86 || MIPS || COMPILE_TEST 1183 depends on MFD_CS5535 1184 help 1185 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 1186 can be used for quite a number of things. The CS5535/6 is found on 1187 AMD Geode and Lemote Yeeloong devices. 1188 1189 If unsure, say N. 1190 1191config GPIO_DA9052 1192 tristate "Dialog DA9052 GPIO" 1193 depends on PMIC_DA9052 1194 help 1195 Say yes here to enable the GPIO driver for the DA9052 chip. 1196 1197config GPIO_DA9055 1198 tristate "Dialog Semiconductor DA9055 GPIO" 1199 depends on MFD_DA9055 1200 help 1201 Say yes here to enable the GPIO driver for the DA9055 chip. 1202 1203 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 1204 be controlled by this driver. 1205 1206 If driver is built as a module it will be called gpio-da9055. 1207 1208config GPIO_DLN2 1209 tristate "Diolan DLN2 GPIO support" 1210 depends on MFD_DLN2 1211 select GPIOLIB_IRQCHIP 1212 1213 help 1214 Select this option to enable GPIO driver for the Diolan DLN2 1215 board. 1216 1217 This driver can also be built as a module. If so, the module 1218 will be called gpio-dln2. 1219 1220config HTC_EGPIO 1221 bool "HTC EGPIO support" 1222 depends on ARM 1223 help 1224 This driver supports the CPLD egpio chip present on 1225 several HTC phones. It provides basic support for input 1226 pins, output pins, and IRQs. 1227 1228config GPIO_JANZ_TTL 1229 tristate "Janz VMOD-TTL Digital IO Module" 1230 depends on MFD_JANZ_CMODIO 1231 help 1232 This enables support for the Janz VMOD-TTL Digital IO module. 1233 This driver provides support for driving the pins in output 1234 mode only. Input mode is not supported. 1235 1236config GPIO_KEMPLD 1237 tristate "Kontron ETX / COMexpress GPIO" 1238 depends on MFD_KEMPLD 1239 help 1240 This enables support for the PLD GPIO interface on some Kontron ETX 1241 and COMexpress (ETXexpress) modules. 1242 1243 This driver can also be built as a module. If so, the module will be 1244 called gpio-kempld. 1245 1246config GPIO_LP3943 1247 tristate "TI/National Semiconductor LP3943 GPIO expander" 1248 depends on MFD_LP3943 1249 help 1250 GPIO driver for LP3943 MFD. 1251 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 1252 Open drain outputs are required for this usage. 1253 1254config GPIO_LP873X 1255 tristate "TI LP873X GPO" 1256 depends on MFD_TI_LP873X 1257 help 1258 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present 1259 on LP873X PMICs. 1260 1261 This driver can also be built as a module. If so, the module will be 1262 called gpio-lp873x. 1263 1264config GPIO_LP87565 1265 tristate "TI LP87565 GPIO" 1266 depends on MFD_TI_LP87565 1267 help 1268 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present 1269 on LP87565 PMICs. 1270 1271 This driver can also be built as a module. If so, the module will be 1272 called gpio-lp87565. 1273 1274config GPIO_MADERA 1275 tristate "Cirrus Logic Madera class codecs" 1276 depends on PINCTRL_MADERA 1277 help 1278 Support for GPIOs on Cirrus Logic Madera class codecs. 1279 1280config GPIO_MAX77620 1281 tristate "GPIO support for PMIC MAX77620 and MAX20024" 1282 depends on MFD_MAX77620 1283 select GPIOLIB_IRQCHIP 1284 help 1285 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor. 1286 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The 1287 driver also provides interrupt support for each of the GPIOs. 1288 Say yes here to enable the max77620 to be used as GPIO controller. 1289 1290config GPIO_MAX77650 1291 tristate "Maxim MAX77650/77651 GPIO support" 1292 depends on MFD_MAX77650 1293 help 1294 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor. 1295 These chips have a single pin that can be configured as GPIO. 1296 1297config GPIO_PALMAS 1298 bool "TI PALMAS series PMICs GPIO" 1299 depends on MFD_PALMAS 1300 help 1301 Select this option to enable GPIO driver for the TI PALMAS 1302 series chip family. 1303 1304config GPIO_RC5T583 1305 bool "RICOH RC5T583 GPIO" 1306 depends on MFD_RC5T583 1307 help 1308 Select this option to enable GPIO driver for the Ricoh RC5T583 1309 chip family. 1310 This driver provides the support for driving/reading the GPIO pins 1311 of RC5T583 device through standard GPIO library. 1312 1313config GPIO_SL28CPLD 1314 tristate "Kontron sl28cpld GPIO support" 1315 depends on MFD_SL28CPLD || COMPILE_TEST 1316 select GPIO_REGMAP 1317 select GPIOLIB_IRQCHIP 1318 select REGMAP_IRQ 1319 help 1320 This enables support for the GPIOs found on the Kontron sl28 CPLD. 1321 1322 This driver can also be built as a module. If so, the module will be 1323 called gpio-sl28cpld. 1324 1325config GPIO_STMPE 1326 bool "STMPE GPIOs" 1327 depends on MFD_STMPE 1328 depends on OF_GPIO 1329 select GPIOLIB_IRQCHIP 1330 help 1331 This enables support for the GPIOs found on the STMPE I/O 1332 Expanders. 1333 1334config GPIO_TC3589X 1335 bool "TC3589X GPIOs" 1336 depends on MFD_TC3589X 1337 depends on OF_GPIO 1338 select GPIOLIB_IRQCHIP 1339 help 1340 This enables support for the GPIOs found on the TC3589X 1341 I/O Expander. 1342 1343config GPIO_TIMBERDALE 1344 bool "Support for timberdale GPIO IP" 1345 depends on MFD_TIMBERDALE 1346 help 1347 Add support for the GPIO IP in the timberdale FPGA. 1348 1349config GPIO_TN48M_CPLD 1350 tristate "Delta Networks TN48M switch CPLD GPIO driver" 1351 depends on MFD_TN48M_CPLD 1352 select GPIO_REGMAP 1353 help 1354 This enables support for the GPIOs found on the Delta 1355 Networks TN48M switch Lattice CPLD. It provides 12 pins in total, 1356 they are input-only or output-only type. 1357 1358 This driver can also be built as a module. If so, the 1359 module will be called gpio-tn48m. 1360 1361config GPIO_TPS65086 1362 tristate "TI TPS65086 GPO" 1363 depends on MFD_TPS65086 1364 help 1365 This driver supports the GPO on TI TPS65086x PMICs. 1366 1367config GPIO_TPS65218 1368 tristate "TPS65218 GPIO" 1369 depends on MFD_TPS65218 1370 help 1371 Select this option to enable GPIO driver for the TPS65218 1372 chip family. 1373 1374config GPIO_TPS6586X 1375 bool "TPS6586X GPIO" 1376 depends on MFD_TPS6586X 1377 help 1378 Select this option to enable GPIO driver for the TPS6586X 1379 chip family. 1380 1381config GPIO_TPS65910 1382 bool "TPS65910 GPIO" 1383 depends on MFD_TPS65910 1384 help 1385 Select this option to enable GPIO driver for the TPS65910 1386 chip family. 1387 1388config GPIO_TPS65912 1389 tristate "TI TPS65912 GPIO" 1390 depends on MFD_TPS65912 1391 help 1392 This driver supports TPS65912 GPIO chip. 1393 1394config GPIO_TPS68470 1395 bool "TPS68470 GPIO" 1396 depends on INTEL_SKL_INT3472 1397 help 1398 Select this option to enable GPIO driver for the TPS68470 1399 chip family. 1400 There are 7 GPIOs and few sensor-related GPIOs supported 1401 by the TPS68470. While the 7 GPIOs can be configured as 1402 input or output as appropriate, the sensor related GPIOs 1403 are "output only" GPIOs. 1404 1405 This driver config is bool, as the GPIO functionality 1406 of the TPS68470 must be available before dependent 1407 drivers are loaded. 1408 1409config GPIO_TQMX86 1410 tristate "TQ-Systems QTMX86 GPIO" 1411 depends on MFD_TQMX86 || COMPILE_TEST 1412 depends on HAS_IOPORT_MAP 1413 select GPIOLIB_IRQCHIP 1414 help 1415 This driver supports GPIO on the TQMX86 IO controller. 1416 1417config GPIO_TWL4030 1418 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 1419 depends on TWL4030_CORE 1420 help 1421 Say yes here to access the GPIO signals of various multi-function 1422 power management chips from Texas Instruments. 1423 1424config GPIO_TWL6040 1425 tristate "TWL6040 GPO" 1426 depends on TWL6040_CORE 1427 help 1428 Say yes here to access the GPO signals of twl6040 1429 audio chip from Texas Instruments. 1430 1431config GPIO_UCB1400 1432 tristate "Philips UCB1400 GPIO" 1433 depends on UCB1400_CORE 1434 help 1435 This enables support for the Philips UCB1400 GPIO pins. 1436 The UCB1400 is an AC97 audio codec. 1437 1438config GPIO_WHISKEY_COVE 1439 tristate "GPIO support for Whiskey Cove PMIC" 1440 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC 1441 select GPIOLIB_IRQCHIP 1442 help 1443 Support for GPIO pins on Whiskey Cove PMIC. 1444 1445 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC 1446 inside. 1447 1448 This driver can also be built as a module. If so, the module will be 1449 called gpio-wcove. 1450 1451config GPIO_WM831X 1452 tristate "WM831x GPIOs" 1453 depends on MFD_WM831X 1454 help 1455 Say yes here to access the GPIO signals of WM831x power management 1456 chips from Wolfson Microelectronics. 1457 1458config GPIO_WM8350 1459 tristate "WM8350 GPIOs" 1460 depends on MFD_WM8350 1461 help 1462 Say yes here to access the GPIO signals of WM8350 power management 1463 chips from Wolfson Microelectronics. 1464 1465config GPIO_WM8994 1466 tristate "WM8994 GPIOs" 1467 depends on MFD_WM8994 1468 help 1469 Say yes here to access the GPIO signals of WM8994 audio hub 1470 CODECs from Wolfson Microelectronics. 1471 1472endmenu 1473 1474menu "PCI GPIO expanders" 1475 depends on PCI 1476 1477config GPIO_AMD8111 1478 tristate "AMD 8111 GPIO driver" 1479 depends on X86 || COMPILE_TEST 1480 depends on HAS_IOPORT_MAP 1481 help 1482 The AMD 8111 southbridge contains 32 GPIO pins which can be used. 1483 1484 Note that usually system firmware/ACPI handles GPIO pins on their 1485 own and users might easily break their systems with uncareful usage 1486 of this driver! 1487 1488 If unsure, say N 1489 1490config GPIO_BT8XX 1491 tristate "BT8XX GPIO abuser" 1492 depends on VIDEO_BT848=n 1493 help 1494 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 1495 as a cheap PCI GPIO card. 1496 1497 This chip can be found on Miro, Hauppauge and STB TV-cards. 1498 1499 The card needs to be physically altered for using it as a 1500 GPIO card. For more information on how to build a GPIO card 1501 from a BT8xx TV card, see the documentation file at 1502 Documentation/driver-api/gpio/bt8xxgpio.rst 1503 1504 If unsure, say N. 1505 1506config GPIO_MERRIFIELD 1507 tristate "Intel Merrifield GPIO support" 1508 depends on X86_INTEL_MID 1509 select GPIOLIB_IRQCHIP 1510 help 1511 Say Y here to support Intel Merrifield GPIO. 1512 1513config GPIO_MLXBF 1514 tristate "Mellanox BlueField SoC GPIO" 1515 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1516 select GPIO_GENERIC 1517 help 1518 Say Y here if you want GPIO support on Mellanox BlueField SoC. 1519 1520config GPIO_MLXBF2 1521 tristate "Mellanox BlueField 2 SoC GPIO" 1522 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1523 select GPIO_GENERIC 1524 help 1525 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC. 1526 1527config GPIO_ML_IOH 1528 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 1529 depends on X86 || COMPILE_TEST 1530 select GENERIC_IRQ_CHIP 1531 help 1532 ML7213 is companion chip for Intel Atom E6xx series. 1533 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output 1534 Hub) which is for IVI (In-Vehicle Infotainment) use. 1535 This driver can access the IOH's GPIO device. 1536 1537config GPIO_PCH 1538 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO" 1539 depends on X86_32 || MIPS || COMPILE_TEST 1540 select GENERIC_IRQ_CHIP 1541 help 1542 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff, 1543 which is an IOH (Input/Output Hub) for x86 embedded processor. 1544 This driver can access PCH GPIO device. 1545 1546 This driver also can be used for LAPIS Semiconductor IOH (Input/ 1547 Output Hub), ML7223 and ML7831. 1548 ML7223 IOH is for MP (Media Phone) use. 1549 ML7831 IOH is for general purpose use. 1550 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1551 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1552 1553config GPIO_PCI_IDIO_16 1554 tristate "ACCES PCI-IDIO-16 GPIO support" 1555 select GPIOLIB_IRQCHIP 1556 help 1557 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is 1558 generated when any of the inputs change state (low to high or high to 1559 low). Input filter control is not supported by this driver, and the 1560 input filters are deactivated by this driver. 1561 1562config GPIO_PCIE_IDIO_24 1563 tristate "ACCES PCIe-IDIO-24 GPIO support" 1564 select GPIOLIB_IRQCHIP 1565 help 1566 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24, 1567 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated 1568 when any of the inputs change state (low to high or high to low). 1569 Input filter control is not supported by this driver, and the input 1570 filters are deactivated by this driver. 1571 1572config GPIO_RDC321X 1573 tristate "RDC R-321x GPIO support" 1574 select MFD_CORE 1575 select MFD_RDC321X 1576 help 1577 Support for the RDC R321x SoC GPIOs over southbridge 1578 PCI configuration space. 1579 1580config GPIO_SODAVILLE 1581 bool "Intel Sodaville GPIO support" 1582 depends on X86 && OF 1583 select GPIO_GENERIC 1584 select GENERIC_IRQ_CHIP 1585 help 1586 Say Y here to support Intel Sodaville GPIO. 1587 1588endmenu 1589 1590menu "SPI GPIO expanders" 1591 depends on SPI_MASTER 1592 1593config GPIO_74X164 1594 tristate "74x164 serial-in/parallel-out 8-bits shift register" 1595 depends on OF_GPIO 1596 help 1597 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 1598 shift registers. This driver can be used to provide access 1599 to more GPIO outputs. 1600 1601config GPIO_MAX3191X 1602 tristate "Maxim MAX3191x industrial serializer" 1603 select CRC8 1604 help 1605 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913, 1606 MAX31953 and MAX31963 industrial serializer, a daisy-chainable 1607 chip to make 8 digital 24V inputs available via SPI. Supports 1608 CRC checksums to guard against electromagnetic interference, 1609 as well as undervoltage and overtemperature detection. 1610 1611config GPIO_MAX7301 1612 tristate "Maxim MAX7301 GPIO expander" 1613 select GPIO_MAX730X 1614 help 1615 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1616 1617config GPIO_MC33880 1618 tristate "Freescale MC33880 high-side/low-side switch" 1619 help 1620 SPI driver for Freescale MC33880 high-side/low-side switch. 1621 This provides GPIO interface supporting inputs and outputs. 1622 1623config GPIO_PISOSR 1624 tristate "Generic parallel-in/serial-out shift register" 1625 help 1626 GPIO driver for SPI compatible parallel-in/serial-out shift 1627 registers. These are input only devices. 1628 1629config GPIO_XRA1403 1630 tristate "EXAR XRA1403 16-bit GPIO expander" 1631 select REGMAP_SPI 1632 help 1633 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander. 1634 1635config GPIO_MOXTET 1636 tristate "Turris Mox Moxtet bus GPIO expander" 1637 depends on MOXTET 1638 help 1639 Say yes here if you are building for the Turris Mox router. 1640 This is the driver needed for configuring the GPIOs via the Moxtet 1641 bus. For example the Mox module with SFP cage needs this driver 1642 so that phylink can use corresponding GPIOs. 1643 1644endmenu 1645 1646menu "USB GPIO expanders" 1647 depends on USB 1648 1649config GPIO_VIPERBOARD 1650 tristate "Viperboard GPIO a & b support" 1651 depends on MFD_VIPERBOARD 1652 help 1653 Say yes here to access the GPIO signals of Nano River 1654 Technologies Viperboard. There are two GPIO chips on the 1655 board: gpioa and gpiob. 1656 See viperboard API specification and Nano 1657 River Tech's viperboard.h for detailed meaning 1658 of the module parameters. 1659 1660endmenu 1661 1662menu "Virtual GPIO drivers" 1663 1664config GPIO_AGGREGATOR 1665 tristate "GPIO Aggregator" 1666 help 1667 Say yes here to enable the GPIO Aggregator, which provides a way to 1668 aggregate existing GPIO lines into a new virtual GPIO chip. 1669 This can serve the following purposes: 1670 - Assign permissions for a collection of GPIO lines to a user, 1671 - Export a collection of GPIO lines to a virtual machine, 1672 - Provide a generic driver for a GPIO-operated device in an 1673 industrial control context, to be operated from userspace using 1674 the GPIO chardev interface. 1675 1676config GPIO_MOCKUP 1677 tristate "GPIO Testing Driver" 1678 select IRQ_SIM 1679 help 1680 This enables GPIO Testing driver, which provides a way to test GPIO 1681 subsystem through sysfs (or char device) and debugfs. 1682 User could use it through the script in 1683 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in 1684 it. 1685 1686config GPIO_VIRTIO 1687 tristate "VirtIO GPIO support" 1688 depends on VIRTIO 1689 select GPIOLIB_IRQCHIP 1690 help 1691 Say Y here to enable guest support for virtio-based GPIO controllers. 1692 1693 These virtual GPIOs can be routed to real GPIOs or attached to 1694 simulators on the host (like QEMU). 1695 1696config GPIO_SIM 1697 tristate "GPIO Simulator Module" 1698 select IRQ_SIM 1699 select CONFIGFS_FS 1700 help 1701 This enables the GPIO simulator - a configfs-based GPIO testing 1702 driver. 1703 1704endmenu 1705 1706endif 1707