1# SPDX-License-Identifier: GPL-2.0-only 2# 3# GPIO infrastructure and drivers 4# 5 6config GPIOLIB_LEGACY 7 def_bool y 8 9config HAVE_SHARED_GPIOS 10 bool 11 12menuconfig GPIOLIB 13 bool "GPIO Support" 14 help 15 This enables GPIO support through the generic GPIO library. 16 You only need to enable this if you also want to enable 17 one or more of the GPIO drivers below. 18 19 If unsure, say N. 20 21if GPIOLIB 22 23config GPIOLIB_FASTPATH_LIMIT 24 int "Maximum number of GPIOs for fast path" 25 range 32 512 26 default 512 27 help 28 This adjusts the point at which certain APIs will switch from 29 using a stack allocated buffer to a dynamically allocated buffer. 30 31 You shouldn't need to change this unless you really need to 32 optimize either stack space or performance. Change this carefully 33 since setting an incorrect value could cause stack corruption. 34 35config OF_GPIO 36 def_bool y 37 depends on OF 38 depends on HAS_IOMEM 39 40config GPIO_ACPI 41 def_bool y 42 depends on ACPI 43 44config GPIOLIB_IRQCHIP 45 select IRQ_DOMAIN 46 bool 47 48config GPIO_SHARED 49 def_bool y 50 depends on HAVE_SHARED_GPIOS || COMPILE_TEST 51 select AUXILIARY_BUS 52 53config DEBUG_GPIO 54 bool "Debug GPIO calls" 55 depends on DEBUG_KERNEL 56 help 57 Say Y here to add some extra checks and diagnostics to GPIO calls. 58 These checks help ensure that GPIOs have been properly initialized 59 before they are used, and that sleeping calls are not made from 60 non-sleeping contexts. They can make bitbanged serial protocols 61 slower. The diagnostics help catch the type of setup errors 62 that are most common when setting up new platforms or boards. 63 64config GPIO_SYSFS 65 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT 66 depends on SYSFS 67 select GPIO_CDEV # We need to encourage the new ABI 68 help 69 Say Y here to add the legacy sysfs interface for GPIOs. 70 71 This ABI is deprecated. If you want to use GPIO from userspace, 72 use the character device /dev/gpiochipN with the appropriate 73 ioctl() operations instead. 74 75config GPIO_SYSFS_LEGACY 76 bool "Enable legacy functionalities of the sysfs interface" 77 depends on GPIO_SYSFS 78 default y if GPIO_SYSFS 79 help 80 Say Y here if you want to enable the legacy, global GPIO 81 numberspace-based functionalities of the sysfs interface. 82 83config GPIO_CDEV 84 bool "Character device (/dev/gpiochipN) support" if EXPERT 85 default y 86 help 87 Say Y here to add the character device /dev/gpiochipN interface 88 for GPIOs. The character device allows userspace to control GPIOs 89 using ioctl() operations. 90 91 Only say N if you are sure that the GPIO character device is not 92 required. 93 94 If unsure, say Y. 95 96config GPIO_CDEV_V1 97 bool "Support GPIO ABI Version 1" 98 default y 99 depends on GPIO_CDEV 100 help 101 Say Y here to support version 1 of the GPIO CDEV ABI. 102 103 This ABI version is deprecated. 104 Please use the latest ABI for new developments. 105 106 If unsure, say Y. 107 108config GPIO_GENERIC 109 depends on HAS_IOMEM # Only for IOMEM drivers 110 tristate 111 112config GPIO_REGMAP 113 select REGMAP 114 tristate 115 116config GPIO_SWNODE_UNDEFINED 117 bool 118 help 119 This adds a special place holder for software nodes to contain an 120 undefined GPIO reference, this is primarily used by SPI to allow a 121 list of GPIO chip selects to mark a certain chip select as being 122 controlled the SPI device's internal chip select mechanism and not 123 a GPIO. 124 125# put drivers in the right section, in alphabetical order 126 127# This symbol is selected by both I2C and SPI expanders 128config GPIO_MAX730X 129 tristate 130 131config GPIO_IDIO_16 132 tristate 133 select REGMAP_IRQ 134 select GPIOLIB_IRQCHIP 135 select GPIO_REGMAP 136 help 137 Enables support for the idio-16 library functions. The idio-16 library 138 provides functions to facilitate communication with devices within the 139 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16. 140 141 If built as a module its name will be gpio-idio-16. 142 143menu "Memory mapped GPIO drivers" 144 depends on HAS_IOMEM 145 146config GPIO_74XX_MMIO 147 tristate "GPIO driver for 74xx-ICs with MMIO access" 148 depends on OF_GPIO 149 select GPIO_GENERIC 150 help 151 Say yes here to support GPIO functionality for 74xx-compatible ICs 152 with MMIO access. Compatible models include: 153 1 bit: 741G125 (Input), 741G74 (Output) 154 2 bits: 742G125 (Input), 7474 (Output) 155 4 bits: 74125 (Input), 74175 (Output) 156 6 bits: 74365 (Input), 74174 (Output) 157 8 bits: 74244 (Input), 74273 (Output) 158 16 bits: 741624 (Input), 7416374 (Output) 159 160config GPIO_ALTERA 161 tristate "Altera GPIO" 162 select GPIOLIB_IRQCHIP 163 help 164 Say Y or M here to build support for the Altera PIO device. 165 166 If driver is built as a module it will be called gpio-altera. 167 168config GPIO_AMDPT 169 tristate "AMD Promontory GPIO support" 170 depends on ACPI 171 select GPIO_GENERIC 172 help 173 Driver for GPIO functionality on Promontory IOHub. 174 Requires ACPI ASL code to enumerate as a platform device. 175 176config GPIO_ASPEED 177 tristate "Aspeed GPIO support" 178 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 179 select GPIOLIB_IRQCHIP 180 help 181 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers. 182 183config GPIO_ASPEED_SGPIO 184 bool "Aspeed SGPIO support" 185 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 186 select GPIO_GENERIC 187 select GPIOLIB_IRQCHIP 188 help 189 Say Y here to support Aspeed AST2500 SGPIO functionality. 190 191config GPIO_ATH79 192 tristate "Atheros AR71XX/AR724X/AR913X GPIO support" 193 default y if ATH79 194 depends on ATH79 || COMPILE_TEST 195 select GPIO_GENERIC 196 select GPIOLIB_IRQCHIP 197 help 198 Select this option to enable GPIO driver for 199 Atheros AR71XX/AR724X/AR913X SoC devices. 200 201config GPIO_RASPBERRYPI_EXP 202 tristate "Raspberry Pi 3 GPIO Expander" 203 default RASPBERRYPI_FIRMWARE 204 depends on OF_GPIO 205 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only 206 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE. 207 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) 208 help 209 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using 210 the firmware mailbox to communicate with VideoCore on BCM283x chips. 211 212config GPIO_BCM_KONA 213 bool "Broadcom Kona GPIO" 214 depends on ARCH_BCM_MOBILE || COMPILE_TEST 215 select GPIOLIB_IRQCHIP 216 help 217 Turn on GPIO support for Broadcom "Kona" chips. 218 219config GPIO_BCM_XGS_IPROC 220 tristate "BRCM XGS iProc GPIO support" 221 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) 222 select GPIO_GENERIC 223 select GPIOLIB_IRQCHIP 224 default ARCH_BCM_IPROC 225 help 226 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs. 227 228config GPIO_BLZP1600 229 tristate "Blaize BLZP1600 GPIO support" 230 default y if ARCH_BLAIZE 231 depends on ARCH_BLAIZE || COMPILE_TEST 232 depends on OF_GPIO 233 select GPIO_GENERIC 234 select GPIOLIB_IRQCHIP 235 help 236 Say Y or M here to add support for the Blaize BLZP1600 GPIO device. 237 The controller is based on the Verisilicon Microelectronics GPIO APB v0.2 238 IP block. 239 240config GPIO_BRCMSTB 241 tristate "BRCMSTB GPIO support" 242 default y if (ARCH_BRCMSTB || BMIPS_GENERIC) 243 depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST) 244 select GPIO_GENERIC 245 select IRQ_DOMAIN 246 help 247 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. 248 249config GPIO_CADENCE 250 tristate "Cadence GPIO support" 251 depends on OF_GPIO 252 select GPIO_GENERIC 253 select GPIOLIB_IRQCHIP 254 help 255 Say yes here to enable support for Cadence GPIO controller. 256 257config GPIO_CLPS711X 258 tristate "CLPS711X GPIO support" 259 depends on ARCH_CLPS711X || COMPILE_TEST 260 select GPIO_GENERIC 261 help 262 Say yes here to support GPIO on CLPS711X SoCs. 263 264config GPIO_DAVINCI 265 tristate "TI Davinci/Keystone GPIO support" 266 default y if ARCH_DAVINCI 267 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST 268 select GPIOLIB_IRQCHIP 269 help 270 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 271 272config GPIO_DWAPB 273 tristate "Synopsys DesignWare APB GPIO driver" 274 select GPIO_GENERIC 275 select GPIOLIB_IRQCHIP 276 help 277 Say Y or M here to build support for the Synopsys DesignWare APB 278 GPIO block. 279 280config GPIO_EIC_SPRD 281 tristate "Spreadtrum EIC support" 282 depends on ARCH_SPRD || COMPILE_TEST 283 depends on OF_GPIO 284 select GPIOLIB_IRQCHIP 285 help 286 Say yes here to support Spreadtrum EIC device. 287 288config GPIO_EM 289 tristate "Emma Mobile GPIO" 290 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO 291 help 292 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 293 294config GPIO_EN7523 295 tristate "Airoha GPIO support" 296 depends on ARCH_AIROHA 297 default ARCH_AIROHA 298 select GPIO_GENERIC 299 select GPIOLIB_IRQCHIP 300 help 301 Say Y or M here to support the GPIO controller block on the 302 Airoha EN7523 SoC. It supports two banks of 32 GPIOs. 303 304config GPIO_EP93XX 305 def_bool y 306 depends on ARCH_EP93XX || COMPILE_TEST 307 select GPIO_GENERIC 308 select GPIOLIB_IRQCHIP 309 310config GPIO_EXAR 311 tristate "Support for GPIO pins on XR17V352/354/358" 312 depends on SERIAL_8250_EXAR 313 select REGMAP_MMIO 314 help 315 Selecting this option will enable handling of GPIO pins present 316 on Exar XR17V352/354/358 chips. 317 318config GPIO_GE_FPGA 319 bool "GE FPGA based GPIO" 320 depends on GE_FPGA || COMPILE_TEST 321 select GPIO_GENERIC 322 help 323 Support for common GPIO functionality provided on some GE Single Board 324 Computers. 325 326 This driver provides basic support (configure as input or output, read 327 and write pin state) for GPIO implemented in a number of GE single 328 board computers. 329 330config GPIO_FTGPIO010 331 bool "Faraday FTGPIO010 GPIO" 332 depends on OF_GPIO 333 select GPIO_GENERIC 334 select GPIOLIB_IRQCHIP 335 default (ARCH_GEMINI || ARCH_MOXART) 336 help 337 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in 338 Cortina systems Gemini platforms, Moxa ART and others. 339 340config GPIO_GENERIC_PLATFORM 341 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 342 select GPIO_GENERIC 343 help 344 Say yes here to support basic platform_device memory-mapped GPIO controllers. 345 346config GPIO_GRANITERAPIDS 347 tristate "Intel Granite Rapids-D vGPIO support" 348 depends on X86 || COMPILE_TEST 349 select GPIOLIB_IRQCHIP 350 help 351 Select this to enable virtual GPIO support on platforms with the 352 following SoCs: 353 354 - Intel Granite Rapids-D 355 356 The driver enables basic GPIO functionality and implements interrupt 357 support. The virtual GPIO driver controls GPIO lines via a firmware 358 interface. The physical GPIO pins reside on device that is external 359 from the main SoC package, such as a BMC or a CPLD. 360 361 To compile this driver as a module, choose M here: the module will 362 be called gpio-graniterapids. 363 364config GPIO_GRGPIO 365 tristate "Aeroflex Gaisler GRGPIO support" 366 depends on OF || COMPILE_TEST 367 select GPIO_GENERIC 368 select GPIOLIB_IRQCHIP 369 help 370 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 371 VHDL IP core library. 372 373config GPIO_HISI 374 tristate "HiSilicon GPIO controller driver" 375 depends on ARM64 || COMPILE_TEST 376 select GPIO_GENERIC 377 select GPIOLIB_IRQCHIP 378 help 379 Say Y or M here to build support for the HiSilicon GPIO controller 380 driver GPIO block. 381 This GPIO controller supports double-edge interrupt and multi-core 382 concurrent access. 383 384config GPIO_HLWD 385 tristate "Nintendo Wii (Hollywood) GPIO" 386 depends on OF_GPIO 387 select GPIO_GENERIC 388 select GPIOLIB_IRQCHIP 389 help 390 Select this to support the GPIO controller of the Nintendo Wii. 391 392 If unsure, say N. 393 394config GPIO_ICH 395 tristate "Intel ICH GPIO" 396 depends on (X86 && LPC_ICH) || (COMPILE_TEST && HAS_IOPORT) 397 help 398 Say yes here to support the GPIO functionality of a number of Intel 399 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 400 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g. 401 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 402 403 If unsure, say N. 404 405config GPIO_IMX_SCU 406 def_bool y 407 depends on IMX_SCU 408 409config GPIO_IXP4XX 410 bool "Intel IXP4xx GPIO" 411 depends on (ARCH_IXP4XX && OF) || COMPILE_TEST 412 select GPIO_GENERIC 413 select GPIOLIB_IRQCHIP 414 select IRQ_DOMAIN_HIERARCHY 415 help 416 Say yes here to support the GPIO functionality of a number of Intel 417 IXP4xx series of chips. 418 419 If unsure, say N. 420 421config GPIO_LOGICVC 422 tristate "Xylon LogiCVC GPIO support" 423 depends on MFD_SYSCON && OF 424 help 425 Say yes here to support GPIO functionality of the Xylon LogiCVC 426 programmable logic block. 427 428config GPIO_LOONGSON 429 bool "Loongson-2/3 GPIO support" 430 depends on CPU_LOONGSON2EF || CPU_LOONGSON64 431 help 432 Driver for GPIO functionality on Loongson-2F/3A/3B processors. 433 434config GPIO_LOONGSON_64BIT 435 tristate "Loongson 64 bit GPIO support" 436 depends on LOONGARCH || COMPILE_TEST 437 depends on OF_GPIO 438 select GPIO_GENERIC 439 select GPIOLIB_IRQCHIP 440 help 441 Say yes here to support the GPIO functionality of a number of 442 Loongson series of chips. The Loongson GPIO controller supports 443 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and 444 the remaining 56 are reused with other functions, with edge or 445 level triggered interrupts. 446 447config GPIO_LPC18XX 448 tristate "NXP LPC18XX/43XX GPIO support" 449 default y if ARCH_LPC18XX 450 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST) 451 select IRQ_DOMAIN_HIERARCHY 452 select GPIOLIB_IRQCHIP 453 help 454 Select this option to enable GPIO driver for 455 NXP LPC18XX/43XX devices. 456 457config GPIO_LPC32XX 458 tristate "NXP LPC32XX GPIO support" 459 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST) 460 help 461 Select this option to enable GPIO driver for 462 NXP LPC32XX devices. 463 464config GPIO_MB86S7X 465 tristate "GPIO support for Fujitsu MB86S7x Platforms" 466 help 467 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 468 469config GPIO_MENZ127 470 tristate "MEN 16Z127 GPIO support" 471 depends on MCB 472 select GPIO_GENERIC 473 help 474 Say yes here to support the MEN 16Z127 GPIO Controller. 475 476config GPIO_MM_LANTIQ 477 bool "Lantiq Memory mapped GPIOs" 478 depends on LANTIQ && SOC_XWAY 479 help 480 This enables support for memory mapped GPIOs on the External Bus Unit 481 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are 482 created by attaching a 16-bit latch to the bus. 483 484config GPIO_MPC5200 485 def_bool y 486 depends on PPC_MPC52xx 487 488config GPIO_MPC8XXX 489 bool "MPC512x/MPC8xxx/QorIQ GPIO support" 490 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 491 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \ 492 COMPILE_TEST 493 select GPIO_GENERIC 494 select GPIOLIB_IRQCHIP 495 help 496 Say Y here if you're going to use hardware that connects to the 497 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs. 498 499config GPIO_MT7621 500 bool "Mediatek MT7621 GPIO Support" 501 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST 502 depends on OF_GPIO 503 select GPIO_GENERIC 504 select GPIOLIB_IRQCHIP 505 help 506 Say yes here to support the Mediatek MT7621 SoC GPIO device. 507 508config GPIO_MVEBU 509 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST 510 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST 511 default PLAT_ORION || ARCH_MVEBU 512 select GENERIC_IRQ_CHIP 513 select REGMAP_MMIO 514 515config GPIO_MXC 516 tristate "i.MX GPIO support" 517 depends on ARCH_MXC || COMPILE_TEST 518 select GPIO_GENERIC 519 select GENERIC_IRQ_CHIP 520 521config GPIO_MXS 522 bool "Freescale MXS GPIO support" if COMPILE_TEST 523 depends on ARCH_MXS || COMPILE_TEST 524 default y if ARCH_MXS 525 select GPIO_GENERIC 526 select GENERIC_IRQ_CHIP 527 528config GPIO_NOMADIK 529 bool "Nomadik GPIO driver" 530 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST 531 select GPIOLIB_IRQCHIP 532 help 533 Say yes here to support the Nomadik SoC GPIO block. This block is also 534 used by the Mobileye EyeQ5 SoC. 535 536 It handles up to 32 GPIOs per bank, that can all be interrupt sources. 537 It is deeply interconnected with the associated pinctrl driver as GPIO 538 registers handle muxing ("alternate functions") as well. 539 540config GPIO_NPCM_SGPIO 541 bool "Nuvoton SGPIO support" 542 depends on ARCH_NPCM || COMPILE_TEST 543 select GPIOLIB_IRQCHIP 544 help 545 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality. 546 547config GPIO_OCTEON 548 tristate "Cavium OCTEON GPIO" 549 depends on CAVIUM_OCTEON_SOC 550 default y 551 help 552 Say yes here to support the on-chip GPIO lines on the OCTEON 553 family of SOCs. 554 555config GPIO_OMAP 556 tristate "TI OMAP GPIO support" 557 depends on ARCH_OMAP || COMPILE_TEST 558 default y if ARCH_OMAP 559 select GENERIC_IRQ_CHIP 560 select GPIOLIB_IRQCHIP 561 help 562 Say yes here to enable GPIO support for TI OMAP SoCs. 563 564config GPIO_PL061 565 tristate "PrimeCell PL061 GPIO support" 566 depends on ARM_AMBA || COMPILE_TEST 567 select IRQ_DOMAIN 568 select GPIOLIB_IRQCHIP 569 help 570 Say yes here to support the PrimeCell PL061 GPIO device. 571 572config GPIO_POLARFIRE_SOC 573 bool "Microchip FPGA GPIO support" 574 select REGMAP_MMIO 575 help 576 Say yes here to support the GPIO controllers on Microchip FPGAs. 577 578config GPIO_PXA 579 bool "PXA GPIO support" 580 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST 581 select GPIOLIB_IRQCHIP 582 help 583 Say yes here to support the PXA GPIO device. 584 585config GPIO_RCAR 586 tristate "Renesas R-Car and RZ/G GPIO support" 587 depends on ARCH_RENESAS || COMPILE_TEST 588 select GPIOLIB_IRQCHIP 589 help 590 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs. 591 592config GPIO_RDA 593 bool "RDA Micro GPIO controller support" 594 depends on ARCH_RDA || COMPILE_TEST 595 depends on OF_GPIO 596 select GPIO_GENERIC 597 select GPIOLIB_IRQCHIP 598 help 599 Say Y here to support RDA Micro GPIO controller. 600 601config GPIO_REALTEK_OTTO 602 tristate "Realtek Otto GPIO support" 603 depends on MACH_REALTEK_RTL 604 default MACH_REALTEK_RTL 605 select GPIO_GENERIC 606 select GPIOLIB_IRQCHIP 607 help 608 The GPIO controller on the Otto MIPS platform supports up to two 609 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs 610 are grouped in four 8-bit wide ports. 611 612 When built as a module, the module will be called realtek_otto_gpio. 613 614config GPIO_REG 615 bool 616 help 617 A 32-bit single register GPIO fixed in/out implementation. This 618 can be used to represent any register as a set of GPIO signals. 619 620config GPIO_ROCKCHIP 621 tristate "Rockchip GPIO support" 622 depends on ARCH_ROCKCHIP || COMPILE_TEST 623 select GENERIC_IRQ_CHIP 624 select GPIOLIB_IRQCHIP 625 default ARCH_ROCKCHIP 626 help 627 Say yes here to support GPIO on Rockchip SoCs. 628 629config GPIO_RTD 630 tristate "Realtek DHC GPIO support" 631 depends on ARCH_REALTEK || COMPILE_TEST 632 default y 633 select GPIOLIB_IRQCHIP 634 help 635 This option enables support for GPIOs found on Realtek DHC(Digital 636 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319, 637 RTD1319D, RTD1395, RTD1619 and RTD1619B. 638 639 Say yes here to support GPIO functionality and GPIO interrupt on 640 Realtek DHC SoCs. 641 642config GPIO_SAMA5D2_PIOBU 643 tristate "SAMA5D2 PIOBU GPIO support" 644 depends on MFD_SYSCON 645 depends on OF_GPIO 646 depends on ARCH_AT91 || COMPILE_TEST 647 select GPIO_SYSCON 648 help 649 Say yes here to use the PIOBU pins as GPIOs. 650 651 PIOBU pins on the SAMA5D2 can be used as GPIOs. 652 The difference from regular GPIOs is that they 653 maintain their value during backup/self-refresh. 654 655config GPIO_SIFIVE 656 tristate "SiFive GPIO support" 657 depends on OF_GPIO 658 select IRQ_DOMAIN_HIERARCHY 659 select GPIO_GENERIC 660 select GPIOLIB_IRQCHIP 661 select REGMAP_MMIO 662 help 663 Say yes here to support the GPIO device on SiFive SoCs. 664 665config GPIO_SIOX 666 tristate "SIOX GPIO support" 667 depends on SIOX 668 select GPIOLIB_IRQCHIP 669 help 670 Say yes here to support SIOX I/O devices. These are units connected 671 via a SIOX bus and have a number of fixed-direction I/O lines. 672 673config GPIO_SNPS_CREG 674 bool "Synopsys GPIO via CREG (Control REGisters) driver" 675 depends on ARC || COMPILE_TEST 676 depends on OF_GPIO 677 help 678 This driver supports GPIOs via CREG on various Synopsys SoCs. 679 This is a single-register MMIO GPIO driver for complex cases 680 where only several fields in register belong to GPIO lines and 681 each GPIO line owns a field with different length and on/off value. 682 683config GPIO_SPACEMIT_K1 684 tristate "SPACEMIT K1 GPIO support" 685 depends on ARCH_SPACEMIT || COMPILE_TEST 686 depends on OF_GPIO 687 select GPIO_GENERIC 688 select GPIOLIB_IRQCHIP 689 help 690 Say yes here to support the SpacemiT's K1 GPIO device. 691 692config GPIO_SPEAR_SPICS 693 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 694 depends on PLAT_SPEAR 695 select GENERIC_IRQ_CHIP 696 help 697 Say yes here to support ST SPEAr SPI Chip Select as GPIO device. 698 699config GPIO_SPRD 700 tristate "Spreadtrum GPIO support" 701 depends on ARCH_SPRD || COMPILE_TEST 702 depends on OF_GPIO 703 select GPIOLIB_IRQCHIP 704 help 705 Say yes here to support Spreadtrum GPIO device. 706 707config GPIO_STP_XWAY 708 bool "XWAY STP GPIOs" 709 depends on SOC_XWAY || COMPILE_TEST 710 depends on OF_GPIO 711 help 712 This enables support for the Serial To Parallel (STP) unit found on 713 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 714 that can be up to 24 bits. This peripheral is aimed at driving LEDs. 715 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and 716 phy status. 717 718config GPIO_SYSCON 719 tristate "GPIO based on SYSCON" 720 depends on MFD_SYSCON && OF 721 help 722 Say yes here to support GPIO functionality though SYSCON driver. 723 724config GPIO_TANGIER 725 tristate 726 select GPIOLIB_IRQCHIP 727 help 728 GPIO support for Intel Tangier and compatible platforms. 729 Currently supported: 730 - Elkhart Lake 731 - Merrifield 732 733 If built as a module its name will be gpio-tangier. 734 735config GPIO_TB10X 736 bool "Abilis Systems TB10x GPIO controller" 737 depends on ARC_PLAT_TB10X || COMPILE_TEST 738 select GPIO_GENERIC 739 select GENERIC_IRQ_CHIP 740 select OF_GPIO 741 742config GPIO_TEGRA 743 tristate "NVIDIA Tegra GPIO support" 744 default ARCH_TEGRA 745 depends on ARCH_TEGRA || COMPILE_TEST 746 depends on OF_GPIO 747 select GPIOLIB_IRQCHIP 748 select IRQ_DOMAIN_HIERARCHY 749 help 750 Say yes here to support GPIO pins on NVIDIA Tegra SoCs. 751 752config GPIO_TEGRA186 753 tristate "NVIDIA Tegra186 GPIO support" 754 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC 755 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST 756 depends on OF_GPIO 757 select GPIOLIB_IRQCHIP 758 select IRQ_DOMAIN_HIERARCHY 759 help 760 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs. 761 762config GPIO_TS4800 763 tristate "TS-4800 DIO blocks and compatibles" 764 depends on OF_GPIO 765 depends on SOC_IMX51 || COMPILE_TEST 766 select GPIO_GENERIC 767 help 768 This driver support TS-4800 FPGA GPIO controllers. 769 770config GPIO_THUNDERX 771 tristate "Cavium ThunderX/OCTEON-TX GPIO" 772 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST) 773 depends on PCI_MSI 774 select GPIOLIB_IRQCHIP 775 select IRQ_DOMAIN_HIERARCHY 776 select IRQ_FASTEOI_HIERARCHY_HANDLERS 777 help 778 Say yes here to support the on-chip GPIO lines on the ThunderX 779 and OCTEON-TX families of SoCs. 780 781config GPIO_UNIPHIER 782 tristate "UniPhier GPIO support" 783 depends on ARCH_UNIPHIER || COMPILE_TEST 784 depends on OF_GPIO 785 select IRQ_DOMAIN_HIERARCHY 786 help 787 Say yes here to support UniPhier GPIOs. 788 789config GPIO_VF610 790 tristate "VF610 GPIO support" 791 default y if SOC_VF610 792 depends on ARCH_MXC || COMPILE_TEST 793 select GPIOLIB_IRQCHIP 794 select GPIO_GENERIC 795 help 796 Say yes here to support i.MX or Vybrid vf610 GPIOs. 797 798config GPIO_VISCONTI 799 tristate "Toshiba Visconti GPIO support" 800 depends on ARCH_VISCONTI || COMPILE_TEST 801 depends on OF_GPIO 802 select GPIOLIB_IRQCHIP 803 select GPIO_GENERIC 804 select IRQ_DOMAIN_HIERARCHY 805 help 806 Say yes here to support GPIO on Tohisba Visconti. 807 808config GPIO_WCD934X 809 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver" 810 depends on MFD_WCD934X && OF_GPIO 811 help 812 This driver is to support GPIO block found on the Qualcomm Technologies 813 Inc WCD9340/WCD9341 Audio Codec. 814 815config GPIO_XGENE 816 bool "APM X-Gene GPIO controller support" 817 depends on ARM64 && OF_GPIO 818 help 819 This driver is to support the GPIO block within the APM X-Gene SoC 820 platform's generic flash controller. The GPIO pins are muxed with 821 the generic flash controller's address and data pins. Say yes 822 here to enable the GFC GPIO functionality. 823 824config GPIO_XGENE_SB 825 tristate "APM X-Gene GPIO standby controller support" 826 depends on (ARCH_XGENE || COMPILE_TEST) 827 select GPIO_GENERIC 828 select GPIOLIB_IRQCHIP 829 select IRQ_DOMAIN_HIERARCHY 830 help 831 This driver supports the GPIO block within the APM X-Gene 832 Standby Domain. Say yes here to enable the GPIO functionality. 833 834config GPIO_XILINX 835 tristate "Xilinx GPIO support" 836 select GPIOLIB_IRQCHIP 837 help 838 Say yes here to support the Xilinx FPGA GPIO device. 839 840config GPIO_XLP 841 tristate "Cavium ThunderX2 GPIO support" 842 depends on ARCH_THUNDER2 || COMPILE_TEST 843 select GPIOLIB_IRQCHIP 844 help 845 This driver provides support for GPIO interface on Cavium's ThunderX2 846 CN99XX SoCs (Originally from Netlogic XLP). 847 848 If unsure, say N. 849 850config GPIO_XTENSA 851 bool "Xtensa GPIO32 support" 852 depends on XTENSA 853 depends on HAVE_XTENSA_GPIO32 854 depends on !SMP 855 help 856 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 857 and EXPSTATE (output) ports. 858 859config GPIO_ZEVIO 860 bool "LSI ZEVIO SoC memory mapped GPIOs" 861 depends on ARM 862 help 863 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 864 865config GPIO_ZYNQ 866 tristate "Xilinx Zynq GPIO support" 867 depends on ARCH_ZYNQ || ARCH_ZYNQMP || COMPILE_TEST 868 select GPIOLIB_IRQCHIP 869 help 870 Say yes here to support Xilinx Zynq GPIO controller. 871 872config GPIO_ZYNQMP_MODEPIN 873 tristate "ZynqMP ps-mode pin GPIO configuration driver" 874 depends on ZYNQMP_FIRMWARE || COMPILE_TEST 875 default ZYNQMP_FIRMWARE 876 help 877 Say yes here to support the ZynqMP ps-mode pin GPIO configuration 878 driver. 879 880 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE 881 is 4-bits boot mode pins. It sets and gets the status of 882 the ps-mode pin. Every pin can be configured as input/output. 883 884config GPIO_LOONGSON1 885 tristate "Loongson1 GPIO support" 886 depends on MACH_LOONGSON32 || COMPILE_TEST 887 select GPIO_GENERIC 888 help 889 Say Y or M here to support GPIO on Loongson1 SoCs. 890 891config GPIO_AMD_FCH 892 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" 893 help 894 This option enables driver for GPIO on AMD's Fusion Controller Hub, 895 as found on G-series SOCs (e.g. GX-412TC). 896 897 Note: This driver doesn't register itself automatically, as it 898 needs to be provided with platform-specific configuration. 899 (See e.g. CONFIG_PCENGINES_APU2.) 900 901config GPIO_MSC313 902 bool "MStar MSC313 GPIO support" 903 depends on ARCH_MSTARV7 || COMPILE_TEST 904 default ARCH_MSTARV7 905 select GPIOLIB_IRQCHIP 906 select IRQ_DOMAIN_HIERARCHY 907 help 908 Say Y here to support the main GPIO block on MStar/SigmaStar 909 ARMv7-based SoCs. 910 911config GPIO_IDT3243X 912 tristate "IDT 79RC3243X GPIO support" 913 depends on MIKROTIK_RB532 || COMPILE_TEST 914 select GPIO_GENERIC 915 select GPIOLIB_IRQCHIP 916 help 917 Select this option to enable GPIO driver for 918 IDT 79RC3243X-based devices like Mikrotik RB532. 919 920 To compile this driver as a module, choose M here: the module will 921 be called gpio-idt3243x. 922 923endmenu 924 925menu "Port-mapped I/O GPIO drivers" 926 depends on X86 && HAS_IOPORT # I/O space access 927 928config GPIO_VX855 929 tristate "VIA VX855/VX875 GPIO" 930 depends on PCI 931 select MFD_CORE 932 select MFD_VX855 933 help 934 Support access to the VX855/VX875 GPIO lines through the GPIO library. 935 936 This driver provides common support for accessing the device. 937 Additional drivers must be enabled in order to use the 938 functionality of the device. 939 940config GPIO_I8255 941 tristate 942 select GPIO_REGMAP 943 help 944 Enables support for the i8255 interface library functions. The i8255 945 interface library provides functions to facilitate communication with 946 interfaces compatible with the venerable Intel 8255 Programmable 947 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released 948 in the early 1970s but compatible interfaces are nowadays typically 949 found embedded in larger VLSI processing chips and FPGA components. 950 951 If built as a module its name will be gpio-i8255. 952 953config GPIO_104_DIO_48E 954 tristate "ACCES 104-DIO-48E GPIO support" 955 depends on PC104 956 select ISA_BUS_API 957 select REGMAP_MMIO 958 select REGMAP_IRQ 959 select GPIOLIB_IRQCHIP 960 select GPIO_I8255 961 select I8254 962 help 963 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E, 964 104-DIO-24E). The base port addresses for the devices may be 965 configured via the base module parameter. The interrupt line numbers 966 for the devices may be configured via the irq module parameter. 967 968config GPIO_104_IDIO_16 969 tristate "ACCES 104-IDIO-16 GPIO support" 970 depends on PC104 971 select ISA_BUS_API 972 select REGMAP_MMIO 973 select GPIO_IDIO_16 974 help 975 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16, 976 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The 977 base port addresses for the devices may be configured via the base 978 module parameter. The interrupt line numbers for the devices may be 979 configured via the irq module parameter. 980 981config GPIO_104_IDI_48 982 tristate "ACCES 104-IDI-48 GPIO support" 983 depends on PC104 984 select ISA_BUS_API 985 select REGMAP_MMIO 986 select REGMAP_IRQ 987 select GPIOLIB_IRQCHIP 988 select GPIO_REGMAP 989 help 990 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A, 991 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for 992 the devices may be configured via the base module parameter. The 993 interrupt line numbers for the devices may be configured via the irq 994 module parameter. 995 996config GPIO_F7188X 997 tristate "Fintek and Nuvoton Super-I/O GPIO support" 998 help 999 This option enables support for GPIOs found on Fintek Super-I/O 1000 chips F71869, F71869A, F71882FG, F71889F and F81866. 1001 As well as Nuvoton Super-I/O chip NCT6126D. 1002 1003 To compile this driver as a module, choose M here: the module will 1004 be called f7188x-gpio. 1005 1006config GPIO_GPIO_MM 1007 tristate "Diamond Systems GPIO-MM GPIO support" 1008 depends on PC104 1009 select ISA_BUS_API 1010 select REGMAP_MMIO 1011 select GPIO_I8255 1012 help 1013 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12. 1014 1015 The Diamond Systems GPIO-MM device features 48 lines of digital I/O 1016 via the emulation of dual 82C55A PPI chips. This driver provides GPIO 1017 support for these 48 channels of digital I/O. 1018 1019 The base port addresses for the devices may be configured via the base 1020 array module parameter. 1021 1022config GPIO_IT87 1023 tristate "IT87xx GPIO support" 1024 help 1025 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 1026 1027 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 1028 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as 1029 well. 1030 1031 To compile this driver as a module, choose M here: the module will 1032 be called gpio_it87. 1033 1034config GPIO_SCH 1035 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 1036 depends on (X86 || COMPILE_TEST) && ACPI 1037 depends on LPC_SCH 1038 select GPIOLIB_IRQCHIP 1039 help 1040 Say yes here to support GPIO interface on Intel Poulsbo SCH, 1041 Intel Tunnel Creek processor, Intel Centerton processor or 1042 Intel Quark X1000 SoC. 1043 1044 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 1045 powered by the core power rail and are turned off during sleep 1046 modes (S3 and higher). The remaining four GPIOs are powered by 1047 the Intel SCH suspend power supply. These GPIOs remain 1048 active during S3. The suspend-powered GPIOs can be used to wake the 1049 system from the Suspend-to-RAM state. 1050 1051 The Intel Tunnel Creek processor has 5 GPIOs powered by the 1052 core power rail and 9 from suspend power supply. 1053 1054 The Intel Centerton processor has a total of 30 GPIO pins. 1055 Twenty-one are powered by the core power rail and 9 from the 1056 suspend power supply. 1057 1058 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 1059 power well and 6 from the suspend power well. 1060 1061config GPIO_SCH311X 1062 tristate "SMSC SCH311x SuperI/O GPIO" 1063 help 1064 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 1065 SCH3116 "Super I/O" chipsets. 1066 1067 To compile this driver as a module, choose M here: the module will 1068 be called gpio-sch311x. 1069 1070config GPIO_TS5500 1071 tristate "TS-5500 DIO blocks and compatibles" 1072 depends on TS5500 || COMPILE_TEST 1073 help 1074 This driver supports Digital I/O exposed by pin blocks found on some 1075 Technologic Systems platforms. It includes, but is not limited to, 3 1076 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 1077 LCD port. 1078 1079config GPIO_WINBOND 1080 tristate "Winbond Super I/O GPIO support" 1081 select ISA_BUS_API 1082 help 1083 This option enables support for GPIOs found on Winbond Super I/O 1084 chips. 1085 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is 1086 supported. 1087 1088 You will need to provide a module parameter "gpios", or a 1089 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO 1090 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.). 1091 1092 To compile this driver as a module, choose M here: the module will 1093 be called gpio-winbond. 1094 1095config GPIO_WS16C48 1096 tristate "WinSystems WS16C48 GPIO support" 1097 select ISA_BUS_API 1098 select REGMAP_IRQ 1099 select REGMAP_MMIO 1100 select GPIOLIB_IRQCHIP 1101 select GPIO_REGMAP 1102 help 1103 Enables GPIO support for the WinSystems WS16C48. The base port 1104 addresses for the devices may be configured via the base module 1105 parameter. The interrupt line numbers for the devices may be 1106 configured via the irq module parameter. 1107 1108endmenu 1109 1110menu "I2C GPIO expanders" 1111 depends on I2C 1112 1113config GPIO_ADNP 1114 tristate "Avionic Design N-bit GPIO expander" 1115 depends on OF_GPIO 1116 select GPIOLIB_IRQCHIP 1117 help 1118 This option enables support for N GPIOs found on Avionic Design 1119 I2C GPIO expanders. The register space will be extended by powers 1120 of two, so the controller will need to accommodate for that. For 1121 example: if a controller provides 48 pins, 6 registers will be 1122 enough to represent all pins, but the driver will assume a 1123 register layout for 64 pins (8 registers). 1124 1125config GPIO_FXL6408 1126 tristate "FXL6408 I2C GPIO expander" 1127 select GPIO_REGMAP 1128 select REGMAP_I2C 1129 help 1130 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander. 1131 1132 To compile this driver as a module, choose M here: the module will 1133 be called gpio-fxl6408. 1134 1135config GPIO_DS4520 1136 tristate "DS4520 I2C GPIO expander" 1137 select REGMAP_I2C 1138 select GPIO_REGMAP 1139 help 1140 GPIO driver for ADI DS4520 I2C-based GPIO expander. 1141 Say yes here to enable the GPIO driver for the ADI DS4520 chip. 1142 1143 To compile this driver as a module, choose M here: the module will 1144 be called gpio-ds4520. 1145 1146config GPIO_GW_PLD 1147 tristate "Gateworks PLD GPIO Expander" 1148 depends on OF_GPIO 1149 help 1150 Say yes here to provide access to the Gateworks I2C PLD GPIO 1151 Expander. This is used at least on the Cambria GW2358-4. 1152 1153config GPIO_MAX7300 1154 tristate "Maxim MAX7300 GPIO expander" 1155 select GPIO_MAX730X 1156 help 1157 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 1158 1159config GPIO_MAX732X 1160 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 1161 help 1162 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 1163 Port Expanders. Each IO port on these chips has a fixed role of 1164 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 1165 Input and Output (designed by 'P'). The combinations are listed 1166 below: 1167 1168 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 1169 max7322 (4I4O), max7323 (4P4O) 1170 1171 16 bits: max7324 (8I8O), max7325 (8P8O), 1172 max7326 (4I12O), max7327 (4P12O) 1173 1174 Board setup code must specify the model to use, and the start 1175 number for these GPIOs. 1176 1177config GPIO_MAX732X_IRQ 1178 bool "Interrupt controller support for MAX732x" 1179 depends on GPIO_MAX732X=y 1180 select GPIOLIB_IRQCHIP 1181 help 1182 Say yes here to enable the max732x to be used as an interrupt 1183 controller. It requires the driver to be built in the kernel. 1184 1185config GPIO_PCA953X 1186 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 1187 select REGMAP_I2C 1188 help 1189 Say yes here to provide access to several register-oriented 1190 SMBus I/O expanders, made mostly by NXP or TI. Compatible 1191 models include: 1192 1193 4 bits: pca9536, pca9537 1194 1195 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 1196 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202, 1197 pcal6408, pcal9554b, tca9538 1198 1199 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 1200 tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318, 1201 tca9539 1202 1203 18 bits: tca6418 1204 1205 24 bits: tca6424, pcal6524 1206 1207 40 bits: pca9505, pca9698, pca9506 1208 1209config GPIO_PCA953X_IRQ 1210 bool "Interrupt controller support for PCA953x" 1211 depends on GPIO_PCA953X 1212 select GPIOLIB_IRQCHIP 1213 help 1214 Say yes here to enable the pca953x to be used as an interrupt 1215 controller. 1216 1217config GPIO_PCA9570 1218 tristate "PCA9570 4-Bit I2C GPO expander" 1219 help 1220 Say yes here to enable the GPO driver for the NXP PCA9570 chip. 1221 1222 To compile this driver as a module, choose M here: the module will 1223 be called gpio-pca9570. 1224 1225config GPIO_PCF857X 1226 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 1227 select GPIOLIB_IRQCHIP 1228 select IRQ_DOMAIN 1229 help 1230 Say yes here to provide access to most "quasi-bidirectional" I2C 1231 GPIO expanders used for additional digital outputs or inputs. 1232 Most of these parts are from NXP, though TI is a second source for 1233 some of them. Compatible models include: 1234 1235 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 1236 pca9670, pca9672, pca9674, pca9674a, 1237 max7328, max7329 1238 1239 16 bits: pcf8575, pcf8575c, pca8575, 1240 pca9671, pca9673, pca9675 1241 1242 Your board setup code will need to declare the expanders in 1243 use, and assign numbers to the GPIOs they expose. Those GPIOs 1244 can then be used from drivers and other kernel code, just like 1245 other GPIOs, but only accessible from task contexts. 1246 1247 This driver provides an in-kernel interface to those GPIOs using 1248 platform-neutral GPIO calls. 1249 1250config GPIO_TPIC2810 1251 tristate "TPIC2810 8-Bit I2C GPO expander" 1252 help 1253 Say yes here to enable the GPO driver for the TI TPIC2810 chip. 1254 1255 To compile this driver as a module, choose M here: the module will 1256 be called gpio-tpic2810. 1257 1258config GPIO_TS4900 1259 tristate "Technologic Systems FPGA I2C GPIO" 1260 depends on SOC_IMX6 || COMPILE_TEST 1261 select REGMAP_I2C 1262 help 1263 Say yes here to enabled the GPIO driver for Technologic's FPGA core. 1264 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990. 1265 1266endmenu 1267 1268menu "MFD GPIO expanders" 1269 1270config GPIO_ADP5520 1271 tristate "GPIO Support for ADP5520 PMIC" 1272 depends on PMIC_ADP5520 1273 help 1274 This option enables support for on-chip GPIO found 1275 on Analog Devices ADP5520 PMICs. 1276 1277config GPIO_ADP5585 1278 tristate "GPIO Support for ADP5585" 1279 depends on MFD_ADP5585 1280 select GPIOLIB_IRQCHIP 1281 help 1282 This option enables support for the GPIO function found in the Analog 1283 Devices ADP5585. 1284 1285config GPIO_ALTERA_A10SR 1286 tristate "Altera Arria10 System Resource GPIO" 1287 depends on MFD_ALTERA_A10SR 1288 help 1289 Driver for Arria10 Development Kit GPIO expansion which 1290 includes reads of pushbuttons and DIP switches as well 1291 as writes to LEDs. 1292 1293config GPIO_ARIZONA 1294 tristate "Wolfson Microelectronics Arizona class devices" 1295 depends on MFD_ARIZONA 1296 help 1297 Support for GPIOs on Wolfson Arizona class devices. 1298 1299config GPIO_BD71815 1300 tristate "ROHM BD71815 PMIC GPIO support" 1301 depends on MFD_ROHM_BD71828 1302 help 1303 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs 1304 available on the ROHM PMIC. 1305 1306 This driver can also be built as a module. If so, the module 1307 will be called gpio-bd71815. 1308 1309config GPIO_BD71828 1310 tristate "ROHM BD71828 GPIO support" 1311 depends on MFD_ROHM_BD71828 1312 help 1313 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs 1314 available on the ROHM PMIC in total. The GPIOs are limited to 1315 outputs only and pins must be configured to GPIO outputs by 1316 OTP. Enable this only if you want to use these pins as outputs. 1317 1318 This driver can also be built as a module. If so, the module 1319 will be called gpio-bd71828. 1320 1321config GPIO_BD9571MWV 1322 tristate "ROHM BD9571 GPIO support" 1323 depends on MFD_BD9571MWV 1324 help 1325 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs 1326 available on the ROHM PMIC in total, both of which can also 1327 generate interrupts. 1328 1329 This driver can also be built as a module. If so, the module 1330 will be called gpio-bd9571mwv. 1331 1332config GPIO_CGBC 1333 tristate "Congatec Board Controller GPIO support" 1334 depends on MFD_CGBC 1335 help 1336 Select this option to enable GPIO support for the Congatec Board 1337 Controller. 1338 1339 This driver can also be built as a module. If so, the module will be 1340 called gpio-cgbc. 1341 1342config GPIO_CROS_EC 1343 tristate "ChromeOS EC GPIO support" 1344 depends on CROS_EC 1345 help 1346 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs 1347 cannot be set unless the system is unlocked. 1348 1349 This driver can also be built as a module. If so, the module 1350 will be called gpio-cros-ec. 1351 1352config GPIO_CRYSTAL_COVE 1353 tristate "GPIO support for Crystal Cove PMIC" 1354 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC 1355 select GPIOLIB_IRQCHIP 1356 help 1357 Support for GPIO pins on Crystal Cove PMIC. 1358 1359 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC 1360 inside. 1361 1362 This driver can also be built as a module. If so, the module will be 1363 called gpio-crystalcove. 1364 1365config GPIO_CS5535 1366 tristate "AMD CS5535/CS5536 GPIO support" 1367 depends on X86 || MIPS || COMPILE_TEST 1368 depends on MFD_CS5535 1369 help 1370 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 1371 can be used for quite a number of things. The CS5535/6 is found on 1372 AMD Geode and Lemote Yeeloong devices. 1373 1374 If unsure, say N. 1375 1376config GPIO_DA9052 1377 tristate "Dialog DA9052 GPIO" 1378 depends on PMIC_DA9052 1379 help 1380 Say yes here to enable the GPIO driver for the DA9052 chip. 1381 1382config GPIO_DA9055 1383 tristate "Dialog Semiconductor DA9055 GPIO" 1384 depends on MFD_DA9055 1385 help 1386 Say yes here to enable the GPIO driver for the DA9055 chip. 1387 1388 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 1389 be controlled by this driver. 1390 1391 If driver is built as a module it will be called gpio-da9055. 1392 1393config GPIO_DLN2 1394 tristate "Diolan DLN2 GPIO support" 1395 depends on MFD_DLN2 1396 select GPIOLIB_IRQCHIP 1397 1398 help 1399 Select this option to enable GPIO driver for the Diolan DLN2 1400 board. 1401 1402 This driver can also be built as a module. If so, the module 1403 will be called gpio-dln2. 1404 1405config HTC_EGPIO 1406 bool "HTC EGPIO support" 1407 depends on ARM || COMPILE_TEST 1408 help 1409 This driver supports the CPLD egpio chip present on 1410 several HTC phones. It provides basic support for input 1411 pins, output pins, and IRQs. 1412 1413config GPIO_ELKHARTLAKE 1414 tristate "Intel Elkhart Lake PSE GPIO support" 1415 depends on INTEL_EHL_PSE_IO 1416 select GPIO_TANGIER 1417 help 1418 Select this option to enable GPIO support for Intel Elkhart Lake 1419 PSE GPIO IP. 1420 1421 To compile this driver as a module, choose M here: the module will 1422 be called gpio-elkhartlake. 1423 1424config GPIO_JANZ_TTL 1425 tristate "Janz VMOD-TTL Digital IO Module" 1426 depends on MFD_JANZ_CMODIO 1427 help 1428 This enables support for the Janz VMOD-TTL Digital IO module. 1429 This driver provides support for driving the pins in output 1430 mode only. Input mode is not supported. 1431 1432config GPIO_KEMPLD 1433 tristate "Kontron ETX / COMexpress GPIO" 1434 depends on MFD_KEMPLD 1435 help 1436 This enables support for the PLD GPIO interface on some Kontron ETX 1437 and COMexpress (ETXexpress) modules. 1438 1439 This driver can also be built as a module. If so, the module will be 1440 called gpio-kempld. 1441 1442config GPIO_LJCA 1443 tristate "INTEL La Jolla Cove Adapter GPIO support" 1444 depends on USB_LJCA 1445 select GPIOLIB_IRQCHIP 1446 default USB_LJCA 1447 help 1448 Select this option to enable GPIO driver for the INTEL 1449 La Jolla Cove Adapter (LJCA) board. 1450 1451 This driver can also be built as a module. If so, the module 1452 will be called gpio-ljca. 1453 1454config GPIO_LP3943 1455 tristate "TI/National Semiconductor LP3943 GPIO expander" 1456 depends on MFD_LP3943 1457 help 1458 GPIO driver for LP3943 MFD. 1459 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 1460 Open drain outputs are required for this usage. 1461 1462config GPIO_LP873X 1463 tristate "TI LP873X GPO" 1464 depends on MFD_TI_LP873X 1465 help 1466 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present 1467 on LP873X PMICs. 1468 1469 This driver can also be built as a module. If so, the module will be 1470 called gpio-lp873x. 1471 1472config GPIO_LP87565 1473 tristate "TI LP87565 GPIO" 1474 depends on MFD_TI_LP87565 1475 help 1476 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present 1477 on LP87565 PMICs. 1478 1479 This driver can also be built as a module. If so, the module will be 1480 called gpio-lp87565. 1481 1482config GPIO_MACSMC 1483 tristate "Apple Mac SMC GPIO" 1484 depends on MFD_MACSMC 1485 help 1486 Support for GPIOs controlled by the SMC microcontroller on Apple Mac 1487 systems. 1488 1489 This driver can also be built as a module. If so, the module will be 1490 called gpio-macsmc. 1491 1492config GPIO_MADERA 1493 tristate "Cirrus Logic Madera class codecs" 1494 depends on PINCTRL_MADERA 1495 help 1496 Support for GPIOs on Cirrus Logic Madera class codecs. 1497 1498config GPIO_MAX7360 1499 tristate "MAX7360 GPIO support" 1500 depends on MFD_MAX7360 1501 select GPIO_REGMAP 1502 select REGMAP_IRQ 1503 help 1504 Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL 1505 lines as GPO. 1506 1507 This driver can also be built as a module. If so, the module will be 1508 called gpio-max7360. 1509 1510config GPIO_MAX77620 1511 tristate "GPIO support for PMIC MAX77620 and MAX20024" 1512 depends on MFD_MAX77620 1513 select GPIOLIB_IRQCHIP 1514 help 1515 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor. 1516 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The 1517 driver also provides interrupt support for each of the GPIOs. 1518 Say yes here to enable the max77620 to be used as GPIO controller. 1519 1520config GPIO_MAX77650 1521 tristate "Maxim MAX77650/77651 GPIO support" 1522 depends on MFD_MAX77650 1523 help 1524 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor. 1525 These chips have a single pin that can be configured as GPIO. 1526 1527config GPIO_MAX77759 1528 tristate "Maxim Integrated MAX77759 GPIO support" 1529 depends on MFD_MAX77759 1530 default MFD_MAX77759 1531 select GPIOLIB_IRQCHIP 1532 help 1533 GPIO driver for MAX77759 PMIC from Maxim Integrated. 1534 There are two GPIOs available on these chips in total, both of 1535 which can also generate interrupts. 1536 1537 This driver can also be built as a module. If so, the module will be 1538 called gpio-max77759. 1539 1540config GPIO_NCT6694 1541 tristate "Nuvoton NCT6694 GPIO controller support" 1542 depends on MFD_NCT6694 1543 select GENERIC_IRQ_CHIP 1544 select GPIOLIB_IRQCHIP 1545 help 1546 This driver supports 8 GPIO pins per bank that can all be interrupt 1547 sources. 1548 1549 This driver can also be built as a module. If so, the module will be 1550 called gpio-nct6694. 1551 1552config GPIO_PALMAS 1553 tristate "TI PALMAS series PMICs GPIO" 1554 depends on MFD_PALMAS 1555 help 1556 Select this option to enable GPIO driver for the TI PALMAS 1557 series chip family. 1558 1559config GPIO_PMIC_EIC_SPRD 1560 tristate "Spreadtrum PMIC EIC support" 1561 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1562 depends on OF_GPIO 1563 select GPIOLIB_IRQCHIP 1564 help 1565 Say yes here to support Spreadtrum PMIC EIC device. 1566 1567config GPIO_QIXIS_FPGA 1568 tristate "NXP QIXIS FPGA GPIO support" 1569 depends on MFD_SIMPLE_MFD_I2C || COMPILE_TEST 1570 select GPIO_REGMAP 1571 help 1572 This enables support for the GPIOs found in the QIXIS FPGA which is 1573 integrated on some NXP Layerscape boards such as LX2160ARDB and 1574 LS1046AQDS. 1575 1576config GPIO_RC5T583 1577 bool "RICOH RC5T583 GPIO" 1578 depends on MFD_RC5T583 1579 help 1580 Select this option to enable GPIO driver for the Ricoh RC5T583 1581 chip family. 1582 This driver provides the support for driving/reading the GPIO pins 1583 of RC5T583 device through standard GPIO library. 1584 1585config GPIO_SL28CPLD 1586 tristate "Kontron sl28cpld GPIO support" 1587 depends on MFD_SL28CPLD || COMPILE_TEST 1588 select GPIO_REGMAP 1589 select GPIOLIB_IRQCHIP 1590 select REGMAP_IRQ 1591 help 1592 This enables support for the GPIOs found on the Kontron sl28 CPLD. 1593 1594 This driver can also be built as a module. If so, the module will be 1595 called gpio-sl28cpld. 1596 1597config GPIO_STMPE 1598 tristate "STMPE GPIOs" 1599 depends on MFD_STMPE 1600 depends on OF_GPIO 1601 select GPIOLIB_IRQCHIP 1602 help 1603 This enables support for the GPIOs found on the STMPE I/O 1604 Expanders. 1605 1606config GPIO_TC3589X 1607 bool "TC3589X GPIOs" 1608 depends on MFD_TC3589X 1609 depends on OF_GPIO 1610 select GPIOLIB_IRQCHIP 1611 help 1612 This enables support for the GPIOs found on the TC3589X 1613 I/O Expander. 1614 1615config GPIO_TIMBERDALE 1616 bool "Support for timberdale GPIO IP" 1617 depends on MFD_TIMBERDALE 1618 select GPIOLIB_IRQCHIP 1619 help 1620 Add support for the GPIO IP in the timberdale FPGA. 1621 1622config GPIO_TN48M_CPLD 1623 tristate "Delta Networks TN48M switch CPLD GPIO driver" 1624 depends on MFD_TN48M_CPLD || COMPILE_TEST 1625 select GPIO_REGMAP 1626 help 1627 This enables support for the GPIOs found on the Delta 1628 Networks TN48M switch Lattice CPLD. It provides 12 pins in total, 1629 they are input-only or output-only type. 1630 1631 This driver can also be built as a module. If so, the 1632 module will be called gpio-tn48m. 1633 1634config GPIO_TPS65086 1635 tristate "TI TPS65086 GPO" 1636 depends on MFD_TPS65086 1637 help 1638 This driver supports the GPO on TI TPS65086x PMICs. 1639 1640config GPIO_TPS65218 1641 tristate "TPS65218 GPIO" 1642 depends on MFD_TPS65218 1643 help 1644 Select this option to enable GPIO driver for the TPS65218 1645 chip family. 1646 1647config GPIO_TPS65219 1648 tristate "TPS65219 GPIO" 1649 depends on MFD_TPS65219 1650 default MFD_TPS65219 1651 help 1652 Select this option to enable GPIO driver for the TPS65219 chip 1653 family. 1654 GPIO0 is statically configured as either input or output prior to 1655 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting 1656 is statically configured by NVM. GPIO0 can't be used as a generic 1657 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when 1658 MULTI_DEVICE_EN=1. 1659 1660 This driver can also be built as a module. If so, the module will be 1661 called gpio_tps65219. 1662 1663config GPIO_TPS6586X 1664 bool "TPS6586X GPIO" 1665 depends on MFD_TPS6586X 1666 help 1667 Select this option to enable GPIO driver for the TPS6586X 1668 chip family. 1669 1670config GPIO_TPS65910 1671 bool "TPS65910 GPIO" 1672 depends on MFD_TPS65910 1673 help 1674 Select this option to enable GPIO driver for the TPS65910 1675 chip family. 1676 1677config GPIO_TPS65912 1678 tristate "TI TPS65912 GPIO" 1679 depends on MFD_TPS65912 1680 help 1681 This driver supports TPS65912 GPIO chip. 1682 1683config GPIO_TPS68470 1684 tristate "TPS68470 GPIO" 1685 depends on INTEL_SKL_INT3472 1686 help 1687 Select this option to enable GPIO driver for the TPS68470 1688 chip family. 1689 There are 7 GPIOs and few sensor-related GPIOs supported 1690 by the TPS68470. While the 7 GPIOs can be configured as 1691 input or output as appropriate, the sensor related GPIOs 1692 are "output only" GPIOs. 1693 1694config GPIO_TQMX86 1695 tristate "TQ-Systems TQMx86 GPIO" 1696 depends on MFD_TQMX86 || COMPILE_TEST 1697 depends on HAS_IOPORT_MAP 1698 select GPIOLIB_IRQCHIP 1699 help 1700 This driver supports GPIO on the TQMX86 IO controller. 1701 1702config GPIO_TWL4030 1703 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 1704 depends on TWL4030_CORE 1705 help 1706 Say yes here to access the GPIO signals of various multi-function 1707 power management chips from Texas Instruments. 1708 1709config GPIO_TWL6040 1710 tristate "TWL6040 GPO" 1711 depends on TWL6040_CORE 1712 help 1713 Say yes here to access the GPO signals of twl6040 1714 audio chip from Texas Instruments. 1715 1716config GPIO_WHISKEY_COVE 1717 tristate "GPIO support for Whiskey Cove PMIC" 1718 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC 1719 select GPIOLIB_IRQCHIP 1720 help 1721 Support for GPIO pins on Whiskey Cove PMIC. 1722 1723 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC 1724 inside. 1725 1726 This driver can also be built as a module. If so, the module will be 1727 called gpio-wcove. 1728 1729config GPIO_WM831X 1730 tristate "WM831x GPIOs" 1731 depends on MFD_WM831X 1732 help 1733 Say yes here to access the GPIO signals of WM831x power management 1734 chips from Wolfson Microelectronics. 1735 1736config GPIO_WM8350 1737 tristate "WM8350 GPIOs" 1738 depends on MFD_WM8350 1739 help 1740 Say yes here to access the GPIO signals of WM8350 power management 1741 chips from Wolfson Microelectronics. 1742 1743config GPIO_WM8994 1744 tristate "WM8994 GPIOs" 1745 depends on MFD_WM8994 1746 help 1747 Say yes here to access the GPIO signals of WM8994 audio hub 1748 CODECs from Wolfson Microelectronics. 1749 1750endmenu 1751 1752menu "PCI GPIO expanders" 1753 depends on PCI 1754 1755config GPIO_AMD8111 1756 tristate "AMD 8111 GPIO driver" 1757 depends on X86 || COMPILE_TEST 1758 depends on HAS_IOPORT_MAP 1759 help 1760 The AMD 8111 southbridge contains 32 GPIO pins which can be used. 1761 1762 Note that usually system firmware/ACPI handles GPIO pins on their 1763 own and users might easily break their systems with uncareful usage 1764 of this driver! 1765 1766 If unsure, say N 1767 1768config GPIO_BT8XX 1769 tristate "BT8XX GPIO abuser" 1770 depends on VIDEO_BT848=n || COMPILE_TEST 1771 help 1772 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 1773 as a cheap PCI GPIO card. 1774 1775 This chip can be found on Miro, Hauppauge and STB TV-cards. 1776 1777 The card needs to be physically altered for using it as a 1778 GPIO card. For more information on how to build a GPIO card 1779 from a BT8xx TV card, see the documentation file at 1780 Documentation/driver-api/gpio/bt8xxgpio.rst 1781 1782 If unsure, say N. 1783 1784config GPIO_MERRIFIELD 1785 tristate "Intel Merrifield GPIO support" 1786 depends on X86_INTEL_MID 1787 select GPIO_TANGIER 1788 help 1789 Say Y here to support Intel Merrifield GPIO. 1790 1791config GPIO_MLXBF 1792 tristate "Mellanox BlueField SoC GPIO" 1793 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1794 select GPIO_GENERIC 1795 help 1796 Say Y here if you want GPIO support on Mellanox BlueField SoC. 1797 1798config GPIO_MLXBF2 1799 tristate "Mellanox BlueField 2 SoC GPIO" 1800 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1801 select GPIO_GENERIC 1802 select GPIOLIB_IRQCHIP 1803 help 1804 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC. 1805 1806config GPIO_MLXBF3 1807 tristate "Mellanox BlueField 3 SoC GPIO" 1808 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST 1809 select GPIO_GENERIC 1810 select GPIOLIB_IRQCHIP 1811 help 1812 Say Y if you want GPIO support on Mellanox BlueField 3 SoC. 1813 This GPIO controller supports interrupt handling and enables the 1814 manipulation of certain GPIO pins. 1815 This controller should be used in parallel with pinctrl-mlxbf3 to 1816 control the desired GPIOs. 1817 This driver can also be built as a module called mlxbf3-gpio. 1818 1819config GPIO_ML_IOH 1820 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 1821 depends on X86 || COMPILE_TEST 1822 select GENERIC_IRQ_CHIP 1823 help 1824 ML7213 is companion chip for Intel Atom E6xx series. 1825 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output 1826 Hub) which is for IVI (In-Vehicle Infotainment) use. 1827 This driver can access the IOH's GPIO device. 1828 1829config GPIO_PCH 1830 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO" 1831 depends on X86_32 || MIPS || COMPILE_TEST 1832 select GENERIC_IRQ_CHIP 1833 help 1834 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff, 1835 which is an IOH (Input/Output Hub) for x86 embedded processor. 1836 This driver can access PCH GPIO device. 1837 1838 This driver also can be used for LAPIS Semiconductor IOH (Input/ 1839 Output Hub), ML7223 and ML7831. 1840 ML7223 IOH is for MP (Media Phone) use. 1841 ML7831 IOH is for general purpose use. 1842 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1843 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1844 1845config GPIO_PCI_IDIO_16 1846 tristate "ACCES PCI-IDIO-16 GPIO support" 1847 select REGMAP_MMIO 1848 select GPIO_IDIO_16 1849 help 1850 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is 1851 generated when any of the inputs change state (low to high or high to 1852 low). Input filter control is not supported by this driver, and the 1853 input filters are deactivated by this driver. 1854 1855config GPIO_PCIE_IDIO_24 1856 tristate "ACCES PCIe-IDIO-24 GPIO support" 1857 select REGMAP_IRQ 1858 select REGMAP_MMIO 1859 select GPIOLIB_IRQCHIP 1860 select GPIO_REGMAP 1861 help 1862 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24, 1863 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated 1864 when any of the inputs change state (low to high or high to low). 1865 Input filter control is not supported by this driver, and the input 1866 filters are deactivated by this driver. 1867 1868config GPIO_RDC321X 1869 tristate "RDC R-321x GPIO support" 1870 select MFD_CORE 1871 select MFD_RDC321X 1872 help 1873 Support for the RDC R321x SoC GPIOs over southbridge 1874 PCI configuration space. 1875 1876config GPIO_SODAVILLE 1877 bool "Intel Sodaville GPIO support" 1878 depends on X86 && OF 1879 select GPIO_GENERIC 1880 select GENERIC_IRQ_CHIP 1881 help 1882 Say Y here to support Intel Sodaville GPIO. 1883 1884endmenu 1885 1886menu "SPI GPIO expanders" 1887 depends on SPI_MASTER 1888 1889config GPIO_74X164 1890 tristate "74x164 serial-in/parallel-out 8-bits shift register" 1891 help 1892 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 1893 shift registers. This driver can be used to provide access 1894 to more GPIO outputs. 1895 1896config GPIO_MAX3191X 1897 tristate "Maxim MAX3191x industrial serializer" 1898 select CRC8 1899 help 1900 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913, 1901 MAX31953 and MAX31963 industrial serializer, a daisy-chainable 1902 chip to make 8 digital 24V inputs available via SPI. Supports 1903 CRC checksums to guard against electromagnetic interference, 1904 as well as undervoltage and overtemperature detection. 1905 1906config GPIO_MAX7301 1907 tristate "Maxim MAX7301 GPIO expander" 1908 select GPIO_MAX730X 1909 help 1910 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1911 1912config GPIO_MC33880 1913 tristate "Freescale MC33880 high-side/low-side switch" 1914 help 1915 SPI driver for Freescale MC33880 high-side/low-side switch. 1916 This provides GPIO interface supporting inputs and outputs. 1917 1918config GPIO_PISOSR 1919 tristate "Generic parallel-in/serial-out shift register" 1920 help 1921 GPIO driver for SPI compatible parallel-in/serial-out shift 1922 registers. These are input only devices. 1923 1924config GPIO_XRA1403 1925 tristate "EXAR XRA1403 16-bit GPIO expander" 1926 select REGMAP_SPI 1927 help 1928 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander. 1929 1930config GPIO_MOXTET 1931 tristate "Turris Mox Moxtet bus GPIO expander" 1932 depends on MOXTET 1933 help 1934 Say yes here if you are building for the Turris Mox router. 1935 This is the driver needed for configuring the GPIOs via the Moxtet 1936 bus. For example the Mox module with SFP cage needs this driver 1937 so that phylink can use corresponding GPIOs. 1938 1939endmenu 1940 1941menu "USB GPIO expanders" 1942 depends on USB 1943 1944config GPIO_VIPERBOARD 1945 tristate "Viperboard GPIO a & b support" 1946 depends on MFD_VIPERBOARD 1947 help 1948 Say yes here to access the GPIO signals of Nano River 1949 Technologies Viperboard. There are two GPIO chips on the 1950 board: gpioa and gpiob. 1951 See viperboard API specification and Nano 1952 River Tech's viperboard.h for detailed meaning 1953 of the module parameters. 1954 1955config GPIO_MPSSE 1956 tristate "FTDI MPSSE GPIO support" 1957 select GPIOLIB_IRQCHIP 1958 help 1959 GPIO driver for FTDI's MPSSE interface. These can do input and 1960 output. Each MPSSE provides 16 IO pins. 1961 1962config GPIO_USBIO 1963 tristate "Intel USBIO GPIO support" 1964 depends on USB_USBIO 1965 default USB_USBIO 1966 help 1967 Select this option to enable GPIO driver for the INTEL 1968 USBIO driver stack. 1969 1970 This driver can also be built as a module. If so, the module 1971 will be called gpio_usbio. 1972 1973endmenu 1974 1975menu "Virtual GPIO drivers" 1976 1977config GPIO_AGGREGATOR 1978 tristate "GPIO Aggregator" 1979 select CONFIGFS_FS 1980 select DEV_SYNC_PROBE 1981 help 1982 Say yes here to enable the GPIO Aggregator, which provides a way to 1983 aggregate existing GPIO lines into a new virtual GPIO chip. 1984 This can serve the following purposes: 1985 - Assign permissions for a collection of GPIO lines to a user, 1986 - Export a collection of GPIO lines to a virtual machine, 1987 - Provide a generic driver for a GPIO-operated device in an 1988 industrial control context, to be operated from userspace using 1989 the GPIO chardev interface. 1990 1991config GPIO_LATCH 1992 tristate "GPIO latch driver" 1993 help 1994 Say yes here to enable a driver for GPIO multiplexers based on latches 1995 connected to other GPIOs. 1996 1997config GPIO_MOCKUP 1998 tristate "GPIO Testing Driver (DEPRECATED)" 1999 select IRQ_SIM 2000 help 2001 This module is DEPRECATED. Please consider using gpio-sim instead. 2002 2003 This enables GPIO Testing driver, which provides a way to test GPIO 2004 subsystem through sysfs (or char device) and debugfs. 2005 User could use it through the script in 2006 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in 2007 it. 2008 2009config GPIO_VIRTIO 2010 tristate "VirtIO GPIO support" 2011 depends on VIRTIO 2012 select GPIOLIB_IRQCHIP 2013 help 2014 Say Y here to enable guest support for virtio-based GPIO controllers. 2015 2016 These virtual GPIOs can be routed to real GPIOs or attached to 2017 simulators on the host (like QEMU). 2018 2019config GPIO_SIM 2020 tristate "GPIO Simulator Module" 2021 select IRQ_SIM 2022 select CONFIGFS_FS 2023 select DEV_SYNC_PROBE 2024 help 2025 This enables the GPIO simulator - a configfs-based GPIO testing 2026 driver. 2027 2028config GPIO_SHARED_PROXY 2029 tristate "Proxy driver for non-exclusive GPIOs" 2030 default m 2031 depends on GPIO_SHARED || COMPILE_TEST 2032 select AUXILIARY_BUS 2033 help 2034 This enables the GPIO shared proxy driver - an abstraction layer 2035 for GPIO pins that are shared by multiple devices. 2036 2037endmenu 2038 2039menu "GPIO Debugging utilities" 2040 2041config GPIO_SLOPPY_LOGIC_ANALYZER 2042 tristate "Sloppy GPIO logic analyzer" 2043 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT 2044 help 2045 This option enables support for a sloppy logic analyzer using polled 2046 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with 2047 this driver. The script will make it easier to use and will also 2048 isolate a CPU for the polling task. Note that this is a last resort 2049 analyzer which can be affected by latencies, non-deterministic code 2050 paths, or NMIs. However, for e.g. remote development, it may be useful 2051 to get a first view and aid further debugging. 2052 2053 If this driver is built as a module it will be called 2054 'gpio-sloppy-logic-analyzer'. 2055 2056config GPIO_VIRTUSER 2057 tristate "GPIO Virtual User Testing Module" 2058 select DEBUG_FS 2059 select CONFIGFS_FS 2060 select IRQ_WORK 2061 select DEV_SYNC_PROBE 2062 help 2063 Say Y here to enable the configurable, configfs-based virtual GPIO 2064 consumer testing driver. 2065 2066 This driver is aimed as a helper in spotting any regressions in 2067 hot-unplug handling in GPIOLIB. 2068 2069endmenu 2070 2071endif 2072 2073config DEV_SYNC_PROBE 2074 tristate 2075