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