1# SPDX-License-Identifier: GPL-2.0-only 2# 3# GPIO infrastructure and drivers 4# 5 6menuconfig GPIOLIB 7 bool "GPIO Support" 8 help 9 This enables GPIO support through the generic GPIO library. 10 You only need to enable this if you also want to enable 11 one or more of the GPIO drivers below. 12 13 If unsure, say N. 14 15if GPIOLIB 16 17config GPIOLIB_FASTPATH_LIMIT 18 int "Maximum number of GPIOs for fast path" 19 range 32 512 20 default 512 21 help 22 This adjusts the point at which certain APIs will switch from 23 using a stack allocated buffer to a dynamically allocated buffer. 24 25 You shouldn't need to change this unless you really need to 26 optimize either stack space or performance. Change this carefully 27 since setting an incorrect value could cause stack corruption. 28 29config OF_GPIO 30 def_bool y 31 depends on OF 32 depends on HAS_IOMEM 33 34config GPIO_ACPI 35 def_bool y 36 depends on ACPI 37 38config GPIOLIB_IRQCHIP 39 select IRQ_DOMAIN 40 bool 41 42config OF_GPIO_MM_GPIOCHIP 43 bool 44 help 45 This adds support for the legacy 'struct of_mm_gpio_chip' interface 46 from PowerPC. Existing drivers using this interface need to select 47 this symbol, but new drivers should use the generic gpio-regmap 48 infrastructure instead. 49 50config DEBUG_GPIO 51 bool "Debug GPIO calls" 52 depends on DEBUG_KERNEL 53 help 54 Say Y here to add some extra checks and diagnostics to GPIO calls. 55 These checks help ensure that GPIOs have been properly initialized 56 before they are used, and that sleeping calls are not made from 57 non-sleeping contexts. They can make bitbanged serial protocols 58 slower. The diagnostics help catch the type of setup errors 59 that are most common when setting up new platforms or boards. 60 61config GPIO_SYSFS 62 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT 63 depends on SYSFS 64 select GPIO_CDEV # We need to encourage the new ABI 65 help 66 Say Y here to add the legacy sysfs interface for GPIOs. 67 68 This ABI is deprecated. If you want to use GPIO from userspace, 69 use the character device /dev/gpiochipN with the appropriate 70 ioctl() operations instead. 71 72config GPIO_CDEV 73 bool "Character device (/dev/gpiochipN) support" if EXPERT 74 default y 75 help 76 Say Y here to add the character device /dev/gpiochipN interface 77 for GPIOs. The character device allows userspace to control GPIOs 78 using ioctl() operations. 79 80 Only say N if you are sure that the GPIO character device is not 81 required. 82 83 If unsure, say Y. 84 85config GPIO_CDEV_V1 86 bool "Support GPIO ABI Version 1" 87 default y 88 depends on GPIO_CDEV 89 help 90 Say Y here to support version 1 of the GPIO CDEV ABI. 91 92 This ABI version is deprecated. 93 Please use the latest ABI for new developments. 94 95 If unsure, say Y. 96 97config GPIO_GENERIC 98 depends on HAS_IOMEM # Only for IOMEM drivers 99 tristate 100 101config GPIO_REGMAP 102 select REGMAP 103 tristate 104 105config GPIO_SWNODE_UNDEFINED 106 bool 107 help 108 This adds a special place holder for software nodes to contain an 109 undefined GPIO reference, this is primarily used by SPI to allow a 110 list of GPIO chip selects to mark a certain chip select as being 111 controlled the SPI device's internal chip select mechanism and not 112 a GPIO. 113 114# put drivers in the right section, in alphabetical order 115 116# This symbol is selected by both I2C and SPI expanders 117config GPIO_MAX730X 118 tristate 119 120config GPIO_IDIO_16 121 tristate 122 select REGMAP_IRQ 123 select GPIOLIB_IRQCHIP 124 select GPIO_REGMAP 125 help 126 Enables support for the idio-16 library functions. The idio-16 library 127 provides functions to facilitate communication with devices within the 128 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16. 129 130 If built as a module its name will be gpio-idio-16. 131 132menu "Memory mapped GPIO drivers" 133 depends on HAS_IOMEM 134 135config GPIO_74XX_MMIO 136 tristate "GPIO driver for 74xx-ICs with MMIO access" 137 depends on OF_GPIO 138 select GPIO_GENERIC 139 help 140 Say yes here to support GPIO functionality for 74xx-compatible ICs 141 with MMIO access. Compatible models include: 142 1 bit: 741G125 (Input), 741G74 (Output) 143 2 bits: 742G125 (Input), 7474 (Output) 144 4 bits: 74125 (Input), 74175 (Output) 145 6 bits: 74365 (Input), 74174 (Output) 146 8 bits: 74244 (Input), 74273 (Output) 147 16 bits: 741624 (Input), 7416374 (Output) 148 149config GPIO_ALTERA 150 tristate "Altera GPIO" 151 select GPIOLIB_IRQCHIP 152 help 153 Say Y or M here to build support for the Altera PIO device. 154 155 If driver is built as a module it will be called gpio-altera. 156 157config GPIO_AMDPT 158 tristate "AMD Promontory GPIO support" 159 depends on ACPI 160 select GPIO_GENERIC 161 help 162 Driver for GPIO functionality on Promontory IOHub. 163 Requires ACPI ASL code to enumerate as a platform device. 164 165config GPIO_ASPEED 166 tristate "Aspeed GPIO support" 167 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 168 select GPIOLIB_IRQCHIP 169 help 170 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers. 171 172config GPIO_ASPEED_SGPIO 173 bool "Aspeed SGPIO support" 174 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 175 select GPIO_GENERIC 176 select GPIOLIB_IRQCHIP 177 help 178 Say Y here to support Aspeed AST2500 SGPIO functionality. 179 180config GPIO_ATH79 181 tristate "Atheros AR71XX/AR724X/AR913X GPIO support" 182 default y if ATH79 183 depends on ATH79 || COMPILE_TEST 184 select GPIO_GENERIC 185 select GPIOLIB_IRQCHIP 186 help 187 Select this option to enable GPIO driver for 188 Atheros AR71XX/AR724X/AR913X SoC devices. 189 190config GPIO_RASPBERRYPI_EXP 191 tristate "Raspberry Pi 3 GPIO Expander" 192 default RASPBERRYPI_FIRMWARE 193 depends on OF_GPIO 194 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only 195 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE. 196 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) 197 help 198 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using 199 the firmware mailbox to communicate with VideoCore on BCM283x chips. 200 201config GPIO_BCM_KONA 202 bool "Broadcom Kona GPIO" 203 depends on ARCH_BCM_MOBILE || COMPILE_TEST 204 help 205 Turn on GPIO support for Broadcom "Kona" chips. 206 207config GPIO_BCM_XGS_IPROC 208 tristate "BRCM XGS iProc GPIO support" 209 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) 210 select GPIO_GENERIC 211 select GPIOLIB_IRQCHIP 212 default ARCH_BCM_IPROC 213 help 214 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs. 215 216config GPIO_BRCMSTB 217 tristate "BRCMSTB GPIO support" 218 default y if (ARCH_BRCMSTB || BMIPS_GENERIC) 219 depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST) 220 select GPIO_GENERIC 221 select IRQ_DOMAIN 222 help 223 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. 224 225config GPIO_CADENCE 226 tristate "Cadence GPIO support" 227 depends on OF_GPIO 228 select GPIO_GENERIC 229 select GPIOLIB_IRQCHIP 230 help 231 Say yes here to enable support for Cadence GPIO controller. 232 233config GPIO_CLPS711X 234 tristate "CLPS711X GPIO support" 235 depends on ARCH_CLPS711X || COMPILE_TEST 236 select GPIO_GENERIC 237 help 238 Say yes here to support GPIO on CLPS711X SoCs. 239 240config GPIO_DAVINCI 241 tristate "TI Davinci/Keystone GPIO support" 242 default y if ARCH_DAVINCI 243 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST 244 help 245 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 246 247config GPIO_DWAPB 248 tristate "Synopsys DesignWare APB GPIO driver" 249 select GPIO_GENERIC 250 select GPIOLIB_IRQCHIP 251 help 252 Say Y or M here to build support for the Synopsys DesignWare APB 253 GPIO block. 254 255config GPIO_EIC_SPRD 256 tristate "Spreadtrum EIC support" 257 depends on ARCH_SPRD || COMPILE_TEST 258 depends on OF_GPIO 259 select GPIOLIB_IRQCHIP 260 help 261 Say yes here to support Spreadtrum EIC device. 262 263config GPIO_EM 264 tristate "Emma Mobile GPIO" 265 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO 266 help 267 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 268 269config GPIO_EN7523 270 tristate "Airoha GPIO support" 271 depends on ARCH_AIROHA 272 default ARCH_AIROHA 273 select GPIO_GENERIC 274 select GPIOLIB_IRQCHIP 275 help 276 Say Y or M here to support the GPIO controller block on the 277 Airoha EN7523 SoC. It supports two banks of 32 GPIOs. 278 279config GPIO_EP93XX 280 def_bool y 281 depends on ARCH_EP93XX 282 select GPIO_GENERIC 283 select GPIOLIB_IRQCHIP 284 285config GPIO_EXAR 286 tristate "Support for GPIO pins on XR17V352/354/358" 287 depends on SERIAL_8250_EXAR 288 select REGMAP_MMIO 289 help 290 Selecting this option will enable handling of GPIO pins present 291 on Exar XR17V352/354/358 chips. 292 293config GPIO_GE_FPGA 294 bool "GE FPGA based GPIO" 295 depends on GE_FPGA || COMPILE_TEST 296 select GPIO_GENERIC 297 help 298 Support for common GPIO functionality provided on some GE Single Board 299 Computers. 300 301 This driver provides basic support (configure as input or output, read 302 and write pin state) for GPIO implemented in a number of GE single 303 board computers. 304 305config GPIO_FTGPIO010 306 bool "Faraday FTGPIO010 GPIO" 307 depends on OF_GPIO 308 select GPIO_GENERIC 309 select GPIOLIB_IRQCHIP 310 default (ARCH_GEMINI || ARCH_MOXART) 311 help 312 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in 313 Cortina systems Gemini platforms, Moxa ART and others. 314 315config GPIO_GENERIC_PLATFORM 316 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 317 select GPIO_GENERIC 318 help 319 Say yes here to support basic platform_device memory-mapped GPIO controllers. 320 321config GPIO_GRANITERAPIDS 322 tristate "Intel Granite Rapids-D vGPIO support" 323 depends on X86 || COMPILE_TEST 324 select GPIOLIB_IRQCHIP 325 help 326 Select this to enable virtual GPIO support on platforms with the 327 following SoCs: 328 329 - Intel Granite Rapids-D 330 331 The driver enables basic GPIO functionality and implements interrupt 332 support. The virtual GPIO driver controls GPIO lines via a firmware 333 interface. The physical GPIO pins reside on device that is external 334 from the main SoC package, such as a BMC or a CPLD. 335 336 To compile this driver as a module, choose M here: the module will 337 be called gpio-graniterapids. 338 339config GPIO_GRGPIO 340 tristate "Aeroflex Gaisler GRGPIO support" 341 select GPIO_GENERIC 342 select IRQ_DOMAIN 343 help 344 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 345 VHDL IP core library. 346 347config GPIO_HISI 348 tristate "HiSilicon GPIO controller driver" 349 depends on ARM64 || COMPILE_TEST 350 select GPIO_GENERIC 351 select GPIOLIB_IRQCHIP 352 help 353 Say Y or M here to build support for the HiSilicon GPIO controller 354 driver GPIO block. 355 This GPIO controller supports double-edge interrupt and multi-core 356 concurrent access. 357 358config GPIO_HLWD 359 tristate "Nintendo Wii (Hollywood) GPIO" 360 depends on OF_GPIO 361 select GPIO_GENERIC 362 select GPIOLIB_IRQCHIP 363 help 364 Select this to support the GPIO controller of the Nintendo Wii. 365 366 If unsure, say N. 367 368config GPIO_ICH 369 tristate "Intel ICH GPIO" 370 depends on X86 371 depends on LPC_ICH 372 help 373 Say yes here to support the GPIO functionality of a number of Intel 374 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 375 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g. 376 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 377 378 If unsure, say N. 379 380config GPIO_IMX_SCU 381 def_bool y 382 depends on IMX_SCU 383 384config GPIO_IXP4XX 385 bool "Intel IXP4xx GPIO" 386 depends on ARCH_IXP4XX 387 depends on OF 388 select GPIO_GENERIC 389 select GPIOLIB_IRQCHIP 390 select IRQ_DOMAIN_HIERARCHY 391 help 392 Say yes here to support the GPIO functionality of a number of Intel 393 IXP4xx series of chips. 394 395 If unsure, say N. 396 397config GPIO_LOGICVC 398 tristate "Xylon LogiCVC GPIO support" 399 depends on MFD_SYSCON && OF 400 help 401 Say yes here to support GPIO functionality of the Xylon LogiCVC 402 programmable logic block. 403 404config GPIO_LOONGSON 405 bool "Loongson-2/3 GPIO support" 406 depends on CPU_LOONGSON2EF || CPU_LOONGSON64 407 help 408 Driver for GPIO functionality on Loongson-2F/3A/3B processors. 409 410config GPIO_LOONGSON_64BIT 411 tristate "Loongson 64 bit GPIO support" 412 depends on LOONGARCH || COMPILE_TEST 413 depends on OF_GPIO 414 select GPIO_GENERIC 415 help 416 Say yes here to support the GPIO functionality of a number of 417 Loongson series of chips. The Loongson GPIO controller supports 418 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and 419 the remaining 56 are reused with other functions, with edge or 420 level triggered interrupts. 421 422config GPIO_LPC18XX 423 tristate "NXP LPC18XX/43XX GPIO support" 424 default y if ARCH_LPC18XX 425 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST) 426 select IRQ_DOMAIN_HIERARCHY 427 help 428 Select this option to enable GPIO driver for 429 NXP LPC18XX/43XX devices. 430 431config GPIO_LPC32XX 432 tristate "NXP LPC32XX GPIO support" 433 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST) 434 help 435 Select this option to enable GPIO driver for 436 NXP LPC32XX devices. 437 438config GPIO_MB86S7X 439 tristate "GPIO support for Fujitsu MB86S7x Platforms" 440 help 441 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 442 443config GPIO_MENZ127 444 tristate "MEN 16Z127 GPIO support" 445 depends on MCB 446 select GPIO_GENERIC 447 help 448 Say yes here to support the MEN 16Z127 GPIO Controller. 449 450config GPIO_MM_LANTIQ 451 bool "Lantiq Memory mapped GPIOs" 452 depends on LANTIQ && SOC_XWAY 453 select OF_GPIO_MM_GPIOCHIP 454 help 455 This enables support for memory mapped GPIOs on the External Bus Unit 456 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are 457 created by attaching a 16-bit latch to the bus. 458 459config GPIO_MPC5200 460 def_bool y 461 depends on PPC_MPC52xx 462 select OF_GPIO_MM_GPIOCHIP 463 464config GPIO_MPC8XXX 465 bool "MPC512x/MPC8xxx/QorIQ GPIO support" 466 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 467 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \ 468 COMPILE_TEST 469 select GPIO_GENERIC 470 select IRQ_DOMAIN 471 help 472 Say Y here if you're going to use hardware that connects to the 473 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs. 474 475config GPIO_MT7621 476 bool "Mediatek MT7621 GPIO Support" 477 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST 478 depends on OF_GPIO 479 select GPIO_GENERIC 480 select GPIOLIB_IRQCHIP 481 help 482 Say yes here to support the Mediatek MT7621 SoC GPIO device. 483 484config GPIO_MVEBU 485 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST 486 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST 487 default PLAT_ORION || ARCH_MVEBU 488 select GENERIC_IRQ_CHIP 489 select REGMAP_MMIO 490 491config GPIO_MXC 492 tristate "i.MX GPIO support" 493 depends on ARCH_MXC || COMPILE_TEST 494 select GPIO_GENERIC 495 select GENERIC_IRQ_CHIP 496 497config GPIO_MXS 498 bool "Freescale MXS GPIO support" if COMPILE_TEST 499 depends on ARCH_MXS || COMPILE_TEST 500 default y if ARCH_MXS 501 select GPIO_GENERIC 502 select GENERIC_IRQ_CHIP 503 504config GPIO_NOMADIK 505 bool "Nomadik GPIO driver" 506 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST 507 select GPIOLIB_IRQCHIP 508 help 509 Say yes here to support the Nomadik SoC GPIO block. This block is also 510 used by the Mobileye EyeQ5 SoC. 511 512 It handles up to 32 GPIOs per bank, that can all be interrupt sources. 513 It is deeply interconnected with the associated pinctrl driver as GPIO 514 registers handle muxing ("alternate functions") as well. 515 516config GPIO_NPCM_SGPIO 517 bool "Nuvoton SGPIO support" 518 depends on ARCH_NPCM || COMPILE_TEST 519 select GPIOLIB_IRQCHIP 520 help 521 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality. 522 523config GPIO_OCTEON 524 tristate "Cavium OCTEON GPIO" 525 depends on CAVIUM_OCTEON_SOC 526 default y 527 help 528 Say yes here to support the on-chip GPIO lines on the OCTEON 529 family of SOCs. 530 531config GPIO_OMAP 532 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST 533 default y if ARCH_OMAP 534 depends on ARM 535 select GENERIC_IRQ_CHIP 536 select GPIOLIB_IRQCHIP 537 help 538 Say yes here to enable GPIO support for TI OMAP SoCs. 539 540config GPIO_PL061 541 tristate "PrimeCell PL061 GPIO support" 542 depends on ARM_AMBA 543 select IRQ_DOMAIN 544 select GPIOLIB_IRQCHIP 545 help 546 Say yes here to support the PrimeCell PL061 GPIO device. 547 548config GPIO_POLARFIRE_SOC 549 bool "Microchip FPGA GPIO support" 550 select REGMAP_MMIO 551 help 552 Say yes here to support the GPIO controllers on Microchip FPGAs. 553 554config GPIO_PXA 555 bool "PXA GPIO support" 556 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST 557 help 558 Say yes here to support the PXA GPIO device. 559 560config GPIO_RCAR 561 tristate "Renesas R-Car and RZ/G GPIO support" 562 depends on ARCH_RENESAS || COMPILE_TEST 563 select GPIOLIB_IRQCHIP 564 help 565 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs. 566 567config GPIO_RDA 568 bool "RDA Micro GPIO controller support" 569 depends on ARCH_RDA || COMPILE_TEST 570 depends on OF_GPIO 571 select GPIO_GENERIC 572 select GPIOLIB_IRQCHIP 573 help 574 Say Y here to support RDA Micro GPIO controller. 575 576config GPIO_REALTEK_OTTO 577 tristate "Realtek Otto GPIO support" 578 depends on MACH_REALTEK_RTL 579 default MACH_REALTEK_RTL 580 select GPIO_GENERIC 581 select GPIOLIB_IRQCHIP 582 help 583 The GPIO controller on the Otto MIPS platform supports up to two 584 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs 585 are grouped in four 8-bit wide ports. 586 587 When built as a module, the module will be called realtek_otto_gpio. 588 589config GPIO_REG 590 bool 591 help 592 A 32-bit single register GPIO fixed in/out implementation. This 593 can be used to represent any register as a set of GPIO signals. 594 595config GPIO_ROCKCHIP 596 tristate "Rockchip GPIO support" 597 depends on ARCH_ROCKCHIP || COMPILE_TEST 598 select GENERIC_IRQ_CHIP 599 select GPIOLIB_IRQCHIP 600 default ARCH_ROCKCHIP 601 help 602 Say yes here to support GPIO on Rockchip SoCs. 603 604config GPIO_RTD 605 tristate "Realtek DHC GPIO support" 606 depends on ARCH_REALTEK 607 default y 608 select GPIOLIB_IRQCHIP 609 help 610 This option enables support for GPIOs found on Realtek DHC(Digital 611 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319, 612 RTD1319D, RTD1395, RTD1619 and RTD1619B. 613 614 Say yes here to support GPIO functionality and GPIO interrupt on 615 Realtek DHC SoCs. 616 617config GPIO_SAMA5D2_PIOBU 618 tristate "SAMA5D2 PIOBU GPIO support" 619 depends on MFD_SYSCON 620 depends on OF_GPIO 621 depends on ARCH_AT91 || COMPILE_TEST 622 select GPIO_SYSCON 623 help 624 Say yes here to use the PIOBU pins as GPIOs. 625 626 PIOBU pins on the SAMA5D2 can be used as GPIOs. 627 The difference from regular GPIOs is that they 628 maintain their value during backup/self-refresh. 629 630config GPIO_SIFIVE 631 tristate "SiFive GPIO support" 632 depends on OF_GPIO 633 select IRQ_DOMAIN_HIERARCHY 634 select GPIO_GENERIC 635 select GPIOLIB_IRQCHIP 636 select REGMAP_MMIO 637 help 638 Say yes here to support the GPIO device on SiFive SoCs. 639 640config GPIO_SIOX 641 tristate "SIOX GPIO support" 642 depends on SIOX 643 select GPIOLIB_IRQCHIP 644 help 645 Say yes here to support SIOX I/O devices. These are units connected 646 via a SIOX bus and have a number of fixed-direction I/O lines. 647 648config GPIO_SNPS_CREG 649 bool "Synopsys GPIO via CREG (Control REGisters) driver" 650 depends on ARC || COMPILE_TEST 651 depends on OF_GPIO 652 help 653 This driver supports GPIOs via CREG on various Synopsys SoCs. 654 This is a single-register MMIO GPIO driver for complex cases 655 where only several fields in register belong to GPIO lines and 656 each GPIO line owns a field with different length and on/off value. 657 658config GPIO_SPEAR_SPICS 659 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 660 depends on PLAT_SPEAR 661 select GENERIC_IRQ_CHIP 662 help 663 Say yes here to support ST SPEAr SPI Chip Select as GPIO device. 664 665config GPIO_SPRD 666 tristate "Spreadtrum GPIO support" 667 depends on ARCH_SPRD || COMPILE_TEST 668 depends on OF_GPIO 669 select GPIOLIB_IRQCHIP 670 help 671 Say yes here to support Spreadtrum GPIO device. 672 673config GPIO_STP_XWAY 674 bool "XWAY STP GPIOs" 675 depends on SOC_XWAY || COMPILE_TEST 676 depends on OF_GPIO 677 help 678 This enables support for the Serial To Parallel (STP) unit found on 679 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 680 that can be up to 24 bits. This peripheral is aimed at driving LEDs. 681 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and 682 phy status. 683 684config GPIO_SYSCON 685 tristate "GPIO based on SYSCON" 686 depends on MFD_SYSCON && OF 687 help 688 Say yes here to support GPIO functionality though SYSCON driver. 689 690config GPIO_TANGIER 691 tristate 692 select GPIOLIB_IRQCHIP 693 help 694 GPIO support for Intel Tangier and compatible platforms. 695 Currently supported: 696 - Elkhart Lake 697 - Merrifield 698 699 If built as a module its name will be gpio-tangier. 700 701config GPIO_TB10X 702 bool 703 select GPIO_GENERIC 704 select GENERIC_IRQ_CHIP 705 select OF_GPIO 706 707config GPIO_TEGRA 708 tristate "NVIDIA Tegra GPIO support" 709 default ARCH_TEGRA 710 depends on ARCH_TEGRA || COMPILE_TEST 711 depends on OF_GPIO 712 select GPIOLIB_IRQCHIP 713 select IRQ_DOMAIN_HIERARCHY 714 help 715 Say yes here to support GPIO pins on NVIDIA Tegra SoCs. 716 717config GPIO_TEGRA186 718 tristate "NVIDIA Tegra186 GPIO support" 719 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC 720 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST 721 depends on OF_GPIO 722 select GPIOLIB_IRQCHIP 723 select IRQ_DOMAIN_HIERARCHY 724 help 725 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs. 726 727config GPIO_TS4800 728 tristate "TS-4800 DIO blocks and compatibles" 729 depends on OF_GPIO 730 depends on SOC_IMX51 || COMPILE_TEST 731 select GPIO_GENERIC 732 help 733 This driver support TS-4800 FPGA GPIO controllers. 734 735config GPIO_THUNDERX 736 tristate "Cavium ThunderX/OCTEON-TX GPIO" 737 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST) 738 depends on PCI_MSI 739 select GPIOLIB_IRQCHIP 740 select IRQ_DOMAIN_HIERARCHY 741 select IRQ_FASTEOI_HIERARCHY_HANDLERS 742 help 743 Say yes here to support the on-chip GPIO lines on the ThunderX 744 and OCTEON-TX families of SoCs. 745 746config GPIO_UNIPHIER 747 tristate "UniPhier GPIO support" 748 depends on ARCH_UNIPHIER || COMPILE_TEST 749 depends on OF_GPIO 750 select IRQ_DOMAIN_HIERARCHY 751 help 752 Say yes here to support UniPhier GPIOs. 753 754config GPIO_VF610 755 bool "VF610 GPIO support" 756 default y if SOC_VF610 757 depends on ARCH_MXC || COMPILE_TEST 758 select GPIOLIB_IRQCHIP 759 help 760 Say yes here to support i.MX or Vybrid vf610 GPIOs. 761 762config GPIO_VISCONTI 763 tristate "Toshiba Visconti GPIO support" 764 depends on ARCH_VISCONTI || COMPILE_TEST 765 depends on OF_GPIO 766 select GPIOLIB_IRQCHIP 767 select GPIO_GENERIC 768 select IRQ_DOMAIN_HIERARCHY 769 help 770 Say yes here to support GPIO on Tohisba Visconti. 771 772config GPIO_WCD934X 773 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver" 774 depends on MFD_WCD934X && OF_GPIO 775 help 776 This driver is to support GPIO block found on the Qualcomm Technologies 777 Inc WCD9340/WCD9341 Audio Codec. 778 779config GPIO_XGENE 780 bool "APM X-Gene GPIO controller support" 781 depends on ARM64 && OF_GPIO 782 help 783 This driver is to support the GPIO block within the APM X-Gene SoC 784 platform's generic flash controller. The GPIO pins are muxed with 785 the generic flash controller's address and data pins. Say yes 786 here to enable the GFC GPIO functionality. 787 788config GPIO_XGENE_SB 789 tristate "APM X-Gene GPIO standby controller support" 790 depends on (ARCH_XGENE || COMPILE_TEST) 791 select GPIO_GENERIC 792 select GPIOLIB_IRQCHIP 793 select IRQ_DOMAIN_HIERARCHY 794 help 795 This driver supports the GPIO block within the APM X-Gene 796 Standby Domain. Say yes here to enable the GPIO functionality. 797 798config GPIO_XILINX 799 tristate "Xilinx GPIO support" 800 select GPIOLIB_IRQCHIP 801 help 802 Say yes here to support the Xilinx FPGA GPIO device. 803 804config GPIO_XLP 805 tristate "Cavium ThunderX2 GPIO support" 806 depends on ARCH_THUNDER2 || COMPILE_TEST 807 select GPIOLIB_IRQCHIP 808 help 809 This driver provides support for GPIO interface on Cavium's ThunderX2 810 CN99XX SoCs (Originally from Netlogic XLP). 811 812 If unsure, say N. 813 814config GPIO_XTENSA 815 bool "Xtensa GPIO32 support" 816 depends on XTENSA 817 depends on HAVE_XTENSA_GPIO32 818 depends on !SMP 819 help 820 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 821 and EXPSTATE (output) ports. 822 823config GPIO_ZEVIO 824 bool "LSI ZEVIO SoC memory mapped GPIOs" 825 depends on ARM 826 help 827 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 828 829config GPIO_ZYNQ 830 tristate "Xilinx Zynq GPIO support" 831 depends on ARCH_ZYNQ || ARCH_ZYNQMP 832 select GPIOLIB_IRQCHIP 833 help 834 Say yes here to support Xilinx Zynq GPIO controller. 835 836config GPIO_ZYNQMP_MODEPIN 837 tristate "ZynqMP ps-mode pin GPIO configuration driver" 838 depends on ZYNQMP_FIRMWARE 839 default ZYNQMP_FIRMWARE 840 help 841 Say yes here to support the ZynqMP ps-mode pin GPIO configuration 842 driver. 843 844 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE 845 is 4-bits boot mode pins. It sets and gets the status of 846 the ps-mode pin. Every pin can be configured as input/output. 847 848config GPIO_LOONGSON1 849 tristate "Loongson1 GPIO support" 850 depends on MACH_LOONGSON32 851 select GPIO_GENERIC 852 help 853 Say Y or M here to support GPIO on Loongson1 SoCs. 854 855config GPIO_AMD_FCH 856 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" 857 help 858 This option enables driver for GPIO on AMD's Fusion Controller Hub, 859 as found on G-series SOCs (e.g. GX-412TC). 860 861 Note: This driver doesn't register itself automatically, as it 862 needs to be provided with platform-specific configuration. 863 (See e.g. CONFIG_PCENGINES_APU2.) 864 865config GPIO_MSC313 866 bool "MStar MSC313 GPIO support" 867 depends on ARCH_MSTARV7 868 default ARCH_MSTARV7 869 select GPIOLIB_IRQCHIP 870 select IRQ_DOMAIN_HIERARCHY 871 help 872 Say Y here to support the main GPIO block on MStar/SigmaStar 873 ARMv7-based SoCs. 874 875config GPIO_IDT3243X 876 tristate "IDT 79RC3243X GPIO support" 877 depends on MIKROTIK_RB532 || COMPILE_TEST 878 select GPIO_GENERIC 879 select GPIOLIB_IRQCHIP 880 help 881 Select this option to enable GPIO driver for 882 IDT 79RC3243X-based devices like Mikrotik RB532. 883 884 To compile this driver as a module, choose M here: the module will 885 be called gpio-idt3243x. 886 887endmenu 888 889menu "Port-mapped I/O GPIO drivers" 890 depends on X86 && HAS_IOPORT # I/O space access 891 892config GPIO_VX855 893 tristate "VIA VX855/VX875 GPIO" 894 depends on PCI 895 select MFD_CORE 896 select MFD_VX855 897 help 898 Support access to the VX855/VX875 GPIO lines through the GPIO library. 899 900 This driver provides common support for accessing the device. 901 Additional drivers must be enabled in order to use the 902 functionality of the device. 903 904config GPIO_I8255 905 tristate 906 select GPIO_REGMAP 907 help 908 Enables support for the i8255 interface library functions. The i8255 909 interface library provides functions to facilitate communication with 910 interfaces compatible with the venerable Intel 8255 Programmable 911 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released 912 in the early 1970s but compatible interfaces are nowadays typically 913 found embedded in larger VLSI processing chips and FPGA components. 914 915 If built as a module its name will be gpio-i8255. 916 917config GPIO_104_DIO_48E 918 tristate "ACCES 104-DIO-48E GPIO support" 919 depends on PC104 920 select ISA_BUS_API 921 select REGMAP_MMIO 922 select REGMAP_IRQ 923 select GPIOLIB_IRQCHIP 924 select GPIO_I8255 925 select I8254 926 help 927 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E, 928 104-DIO-24E). The base port addresses for the devices may be 929 configured via the base module parameter. The interrupt line numbers 930 for the devices may be configured via the irq module parameter. 931 932config GPIO_104_IDIO_16 933 tristate "ACCES 104-IDIO-16 GPIO support" 934 depends on PC104 935 select ISA_BUS_API 936 select REGMAP_MMIO 937 select GPIO_IDIO_16 938 help 939 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16, 940 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The 941 base port addresses for the devices may be configured via the base 942 module parameter. The interrupt line numbers for the devices may be 943 configured via the irq module parameter. 944 945config GPIO_104_IDI_48 946 tristate "ACCES 104-IDI-48 GPIO support" 947 depends on PC104 948 select ISA_BUS_API 949 select REGMAP_MMIO 950 select REGMAP_IRQ 951 select GPIOLIB_IRQCHIP 952 select GPIO_REGMAP 953 help 954 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A, 955 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for 956 the devices may be configured via the base module parameter. The 957 interrupt line numbers for the devices may be configured via the irq 958 module parameter. 959 960config GPIO_F7188X 961 tristate "Fintek and Nuvoton Super-I/O GPIO support" 962 help 963 This option enables support for GPIOs found on Fintek Super-I/O 964 chips F71869, F71869A, F71882FG, F71889F and F81866. 965 As well as Nuvoton Super-I/O chip NCT6126D. 966 967 To compile this driver as a module, choose M here: the module will 968 be called f7188x-gpio. 969 970config GPIO_GPIO_MM 971 tristate "Diamond Systems GPIO-MM GPIO support" 972 depends on PC104 973 select ISA_BUS_API 974 select REGMAP_MMIO 975 select GPIO_I8255 976 help 977 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12. 978 979 The Diamond Systems GPIO-MM device features 48 lines of digital I/O 980 via the emulation of dual 82C55A PPI chips. This driver provides GPIO 981 support for these 48 channels of digital I/O. 982 983 The base port addresses for the devices may be configured via the base 984 array module parameter. 985 986config GPIO_IT87 987 tristate "IT87xx GPIO support" 988 help 989 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 990 991 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 992 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as 993 well. 994 995 To compile this driver as a module, choose M here: the module will 996 be called gpio_it87. 997 998config GPIO_SCH 999 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 1000 depends on (X86 || COMPILE_TEST) && ACPI 1001 depends on LPC_SCH 1002 select GPIOLIB_IRQCHIP 1003 help 1004 Say yes here to support GPIO interface on Intel Poulsbo SCH, 1005 Intel Tunnel Creek processor, Intel Centerton processor or 1006 Intel Quark X1000 SoC. 1007 1008 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 1009 powered by the core power rail and are turned off during sleep 1010 modes (S3 and higher). The remaining four GPIOs are powered by 1011 the Intel SCH suspend power supply. These GPIOs remain 1012 active during S3. The suspend-powered GPIOs can be used to wake the 1013 system from the Suspend-to-RAM state. 1014 1015 The Intel Tunnel Creek processor has 5 GPIOs powered by the 1016 core power rail and 9 from suspend power supply. 1017 1018 The Intel Centerton processor has a total of 30 GPIO pins. 1019 Twenty-one are powered by the core power rail and 9 from the 1020 suspend power supply. 1021 1022 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 1023 power well and 6 from the suspend power well. 1024 1025config GPIO_SCH311X 1026 tristate "SMSC SCH311x SuperI/O GPIO" 1027 help 1028 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 1029 SCH3116 "Super I/O" chipsets. 1030 1031 To compile this driver as a module, choose M here: the module will 1032 be called gpio-sch311x. 1033 1034config GPIO_TS5500 1035 tristate "TS-5500 DIO blocks and compatibles" 1036 depends on TS5500 || COMPILE_TEST 1037 help 1038 This driver supports Digital I/O exposed by pin blocks found on some 1039 Technologic Systems platforms. It includes, but is not limited to, 3 1040 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 1041 LCD port. 1042 1043config GPIO_WINBOND 1044 tristate "Winbond Super I/O GPIO support" 1045 select ISA_BUS_API 1046 help 1047 This option enables support for GPIOs found on Winbond Super I/O 1048 chips. 1049 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is 1050 supported. 1051 1052 You will need to provide a module parameter "gpios", or a 1053 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO 1054 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.). 1055 1056 To compile this driver as a module, choose M here: the module will 1057 be called gpio-winbond. 1058 1059config GPIO_WS16C48 1060 tristate "WinSystems WS16C48 GPIO support" 1061 select ISA_BUS_API 1062 select REGMAP_IRQ 1063 select REGMAP_MMIO 1064 select GPIOLIB_IRQCHIP 1065 select GPIO_REGMAP 1066 help 1067 Enables GPIO support for the WinSystems WS16C48. The base port 1068 addresses for the devices may be configured via the base module 1069 parameter. The interrupt line numbers for the devices may be 1070 configured via the irq module parameter. 1071 1072endmenu 1073 1074menu "I2C GPIO expanders" 1075 depends on I2C 1076 1077config GPIO_ADNP 1078 tristate "Avionic Design N-bit GPIO expander" 1079 depends on OF_GPIO 1080 select GPIOLIB_IRQCHIP 1081 help 1082 This option enables support for N GPIOs found on Avionic Design 1083 I2C GPIO expanders. The register space will be extended by powers 1084 of two, so the controller will need to accommodate for that. For 1085 example: if a controller provides 48 pins, 6 registers will be 1086 enough to represent all pins, but the driver will assume a 1087 register layout for 64 pins (8 registers). 1088 1089config GPIO_FXL6408 1090 tristate "FXL6408 I2C GPIO expander" 1091 select GPIO_REGMAP 1092 select REGMAP_I2C 1093 help 1094 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander. 1095 1096 To compile this driver as a module, choose M here: the module will 1097 be called gpio-fxl6408. 1098 1099config GPIO_DS4520 1100 tristate "DS4520 I2C GPIO expander" 1101 select REGMAP_I2C 1102 select GPIO_REGMAP 1103 help 1104 GPIO driver for ADI DS4520 I2C-based GPIO expander. 1105 Say yes here to enable the GPIO driver for the ADI DS4520 chip. 1106 1107 To compile this driver as a module, choose M here: the module will 1108 be called gpio-ds4520. 1109 1110config GPIO_GW_PLD 1111 tristate "Gateworks PLD GPIO Expander" 1112 depends on OF_GPIO 1113 help 1114 Say yes here to provide access to the Gateworks I2C PLD GPIO 1115 Expander. This is used at least on the Cambria GW2358-4. 1116 1117config GPIO_MAX7300 1118 tristate "Maxim MAX7300 GPIO expander" 1119 select GPIO_MAX730X 1120 help 1121 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 1122 1123config GPIO_MAX732X 1124 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 1125 help 1126 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 1127 Port Expanders. Each IO port on these chips has a fixed role of 1128 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 1129 Input and Output (designed by 'P'). The combinations are listed 1130 below: 1131 1132 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 1133 max7322 (4I4O), max7323 (4P4O) 1134 1135 16 bits: max7324 (8I8O), max7325 (8P8O), 1136 max7326 (4I12O), max7327 (4P12O) 1137 1138 Board setup code must specify the model to use, and the start 1139 number for these GPIOs. 1140 1141config GPIO_MAX732X_IRQ 1142 bool "Interrupt controller support for MAX732x" 1143 depends on GPIO_MAX732X=y 1144 select GPIOLIB_IRQCHIP 1145 help 1146 Say yes here to enable the max732x to be used as an interrupt 1147 controller. It requires the driver to be built in the kernel. 1148 1149config GPIO_PCA953X 1150 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 1151 select REGMAP_I2C 1152 help 1153 Say yes here to provide access to several register-oriented 1154 SMBus I/O expanders, made mostly by NXP or TI. Compatible 1155 models include: 1156 1157 4 bits: pca9536, pca9537 1158 1159 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 1160 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202 1161 1162 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 1163 tca6416 1164 1165 24 bits: tca6424 1166 1167 40 bits: pca9505, pca9698 1168 1169config GPIO_PCA953X_IRQ 1170 bool "Interrupt controller support for PCA953x" 1171 depends on GPIO_PCA953X 1172 select GPIOLIB_IRQCHIP 1173 help 1174 Say yes here to enable the pca953x to be used as an interrupt 1175 controller. 1176 1177config GPIO_PCA9570 1178 tristate "PCA9570 4-Bit I2C GPO expander" 1179 help 1180 Say yes here to enable the GPO driver for the NXP PCA9570 chip. 1181 1182 To compile this driver as a module, choose M here: the module will 1183 be called gpio-pca9570. 1184 1185config GPIO_PCF857X 1186 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 1187 select GPIOLIB_IRQCHIP 1188 select IRQ_DOMAIN 1189 help 1190 Say yes here to provide access to most "quasi-bidirectional" I2C 1191 GPIO expanders used for additional digital outputs or inputs. 1192 Most of these parts are from NXP, though TI is a second source for 1193 some of them. Compatible models include: 1194 1195 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 1196 pca9670, pca9672, pca9674, pca9674a, 1197 max7328, max7329 1198 1199 16 bits: pcf8575, pcf8575c, pca8575, 1200 pca9671, pca9673, pca9675 1201 1202 Your board setup code will need to declare the expanders in 1203 use, and assign numbers to the GPIOs they expose. Those GPIOs 1204 can then be used from drivers and other kernel code, just like 1205 other GPIOs, but only accessible from task contexts. 1206 1207 This driver provides an in-kernel interface to those GPIOs using 1208 platform-neutral GPIO calls. 1209 1210config GPIO_TPIC2810 1211 tristate "TPIC2810 8-Bit I2C GPO expander" 1212 help 1213 Say yes here to enable the GPO driver for the TI TPIC2810 chip. 1214 1215 To compile this driver as a module, choose M here: the module will 1216 be called gpio-tpic2810. 1217 1218config GPIO_TS4900 1219 tristate "Technologic Systems FPGA I2C GPIO" 1220 depends on SOC_IMX6 || COMPILE_TEST 1221 select REGMAP_I2C 1222 help 1223 Say yes here to enabled the GPIO driver for Technologic's FPGA core. 1224 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990. 1225 1226endmenu 1227 1228menu "MFD GPIO expanders" 1229 1230config GPIO_ADP5520 1231 tristate "GPIO Support for ADP5520 PMIC" 1232 depends on PMIC_ADP5520 1233 help 1234 This option enables support for on-chip GPIO found 1235 on Analog Devices ADP5520 PMICs. 1236 1237config GPIO_ADP5585 1238 tristate "GPIO Support for ADP5585" 1239 depends on MFD_ADP5585 1240 help 1241 This option enables support for the GPIO function found in the Analog 1242 Devices ADP5585. 1243 1244config GPIO_ALTERA_A10SR 1245 tristate "Altera Arria10 System Resource GPIO" 1246 depends on MFD_ALTERA_A10SR 1247 help 1248 Driver for Arria10 Development Kit GPIO expansion which 1249 includes reads of pushbuttons and DIP switches as well 1250 as writes to LEDs. 1251 1252config GPIO_ARIZONA 1253 tristate "Wolfson Microelectronics Arizona class devices" 1254 depends on MFD_ARIZONA 1255 help 1256 Support for GPIOs on Wolfson Arizona class devices. 1257 1258config GPIO_BD71815 1259 tristate "ROHM BD71815 PMIC GPIO support" 1260 depends on MFD_ROHM_BD71828 1261 help 1262 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs 1263 available on the ROHM PMIC. 1264 1265 This driver can also be built as a module. If so, the module 1266 will be called gpio-bd71815. 1267 1268config GPIO_BD71828 1269 tristate "ROHM BD71828 GPIO support" 1270 depends on MFD_ROHM_BD71828 1271 help 1272 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs 1273 available on the ROHM PMIC in total. The GPIOs are limited to 1274 outputs only and pins must be configured to GPIO outputs by 1275 OTP. Enable this only if you want to use these pins as outputs. 1276 1277 This driver can also be built as a module. If so, the module 1278 will be called gpio-bd71828. 1279 1280config GPIO_BD9571MWV 1281 tristate "ROHM BD9571 GPIO support" 1282 depends on MFD_BD9571MWV 1283 help 1284 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs 1285 available on the ROHM PMIC in total, both of which can also 1286 generate interrupts. 1287 1288 This driver can also be built as a module. If so, the module 1289 will be called gpio-bd9571mwv. 1290 1291config GPIO_CGBC 1292 tristate "Congatec Board Controller GPIO support" 1293 depends on MFD_CGBC 1294 help 1295 Select this option to enable GPIO support for the Congatec Board 1296 Controller. 1297 1298 This driver can also be built as a module. If so, the module will be 1299 called gpio-cgbc. 1300 1301config GPIO_CROS_EC 1302 tristate "ChromeOS EC GPIO support" 1303 depends on CROS_EC 1304 help 1305 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs 1306 cannot be set unless the system is unlocked. 1307 1308 This driver can also be built as a module. If so, the module 1309 will be called gpio-cros-ec. 1310 1311config GPIO_CRYSTAL_COVE 1312 tristate "GPIO support for Crystal Cove PMIC" 1313 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC 1314 select GPIOLIB_IRQCHIP 1315 help 1316 Support for GPIO pins on Crystal Cove PMIC. 1317 1318 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC 1319 inside. 1320 1321 This driver can also be built as a module. If so, the module will be 1322 called gpio-crystalcove. 1323 1324config GPIO_CS5535 1325 tristate "AMD CS5535/CS5536 GPIO support" 1326 depends on X86 || MIPS || COMPILE_TEST 1327 depends on MFD_CS5535 1328 help 1329 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 1330 can be used for quite a number of things. The CS5535/6 is found on 1331 AMD Geode and Lemote Yeeloong devices. 1332 1333 If unsure, say N. 1334 1335config GPIO_DA9052 1336 tristate "Dialog DA9052 GPIO" 1337 depends on PMIC_DA9052 1338 help 1339 Say yes here to enable the GPIO driver for the DA9052 chip. 1340 1341config GPIO_DA9055 1342 tristate "Dialog Semiconductor DA9055 GPIO" 1343 depends on MFD_DA9055 1344 help 1345 Say yes here to enable the GPIO driver for the DA9055 chip. 1346 1347 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 1348 be controlled by this driver. 1349 1350 If driver is built as a module it will be called gpio-da9055. 1351 1352config GPIO_DLN2 1353 tristate "Diolan DLN2 GPIO support" 1354 depends on MFD_DLN2 1355 select GPIOLIB_IRQCHIP 1356 1357 help 1358 Select this option to enable GPIO driver for the Diolan DLN2 1359 board. 1360 1361 This driver can also be built as a module. If so, the module 1362 will be called gpio-dln2. 1363 1364config HTC_EGPIO 1365 bool "HTC EGPIO support" 1366 depends on ARM 1367 help 1368 This driver supports the CPLD egpio chip present on 1369 several HTC phones. It provides basic support for input 1370 pins, output pins, and IRQs. 1371 1372config GPIO_ELKHARTLAKE 1373 tristate "Intel Elkhart Lake PSE GPIO support" 1374 depends on X86 || COMPILE_TEST 1375 select GPIO_TANGIER 1376 help 1377 Select this option to enable GPIO support for Intel Elkhart Lake 1378 PSE GPIO IP. 1379 1380 To compile this driver as a module, choose M here: the module will 1381 be called gpio-elkhartlake. 1382 1383config GPIO_JANZ_TTL 1384 tristate "Janz VMOD-TTL Digital IO Module" 1385 depends on MFD_JANZ_CMODIO 1386 help 1387 This enables support for the Janz VMOD-TTL Digital IO module. 1388 This driver provides support for driving the pins in output 1389 mode only. Input mode is not supported. 1390 1391config GPIO_KEMPLD 1392 tristate "Kontron ETX / COMexpress GPIO" 1393 depends on MFD_KEMPLD 1394 help 1395 This enables support for the PLD GPIO interface on some Kontron ETX 1396 and COMexpress (ETXexpress) modules. 1397 1398 This driver can also be built as a module. If so, the module will be 1399 called gpio-kempld. 1400 1401config GPIO_LJCA 1402 tristate "INTEL La Jolla Cove Adapter GPIO support" 1403 depends on USB_LJCA 1404 select GPIOLIB_IRQCHIP 1405 default USB_LJCA 1406 help 1407 Select this option to enable GPIO driver for the INTEL 1408 La Jolla Cove Adapter (LJCA) board. 1409 1410 This driver can also be built as a module. If so, the module 1411 will be called gpio-ljca. 1412 1413config GPIO_LP3943 1414 tristate "TI/National Semiconductor LP3943 GPIO expander" 1415 depends on MFD_LP3943 1416 help 1417 GPIO driver for LP3943 MFD. 1418 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 1419 Open drain outputs are required for this usage. 1420 1421config GPIO_LP873X 1422 tristate "TI LP873X GPO" 1423 depends on MFD_TI_LP873X 1424 help 1425 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present 1426 on LP873X PMICs. 1427 1428 This driver can also be built as a module. If so, the module will be 1429 called gpio-lp873x. 1430 1431config GPIO_LP87565 1432 tristate "TI LP87565 GPIO" 1433 depends on MFD_TI_LP87565 1434 help 1435 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present 1436 on LP87565 PMICs. 1437 1438 This driver can also be built as a module. If so, the module will be 1439 called gpio-lp87565. 1440 1441config GPIO_MADERA 1442 tristate "Cirrus Logic Madera class codecs" 1443 depends on PINCTRL_MADERA 1444 help 1445 Support for GPIOs on Cirrus Logic Madera class codecs. 1446 1447config GPIO_MAX77620 1448 tristate "GPIO support for PMIC MAX77620 and MAX20024" 1449 depends on MFD_MAX77620 1450 select GPIOLIB_IRQCHIP 1451 help 1452 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor. 1453 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The 1454 driver also provides interrupt support for each of the GPIOs. 1455 Say yes here to enable the max77620 to be used as GPIO controller. 1456 1457config GPIO_MAX77650 1458 tristate "Maxim MAX77650/77651 GPIO support" 1459 depends on MFD_MAX77650 1460 help 1461 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor. 1462 These chips have a single pin that can be configured as GPIO. 1463 1464config GPIO_PALMAS 1465 bool "TI PALMAS series PMICs GPIO" 1466 depends on MFD_PALMAS 1467 help 1468 Select this option to enable GPIO driver for the TI PALMAS 1469 series chip family. 1470 1471config GPIO_PMIC_EIC_SPRD 1472 tristate "Spreadtrum PMIC EIC support" 1473 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1474 depends on OF_GPIO 1475 select GPIOLIB_IRQCHIP 1476 help 1477 Say yes here to support Spreadtrum PMIC EIC device. 1478 1479config GPIO_RC5T583 1480 bool "RICOH RC5T583 GPIO" 1481 depends on MFD_RC5T583 1482 help 1483 Select this option to enable GPIO driver for the Ricoh RC5T583 1484 chip family. 1485 This driver provides the support for driving/reading the GPIO pins 1486 of RC5T583 device through standard GPIO library. 1487 1488config GPIO_SL28CPLD 1489 tristate "Kontron sl28cpld GPIO support" 1490 depends on MFD_SL28CPLD || COMPILE_TEST 1491 select GPIO_REGMAP 1492 select GPIOLIB_IRQCHIP 1493 select REGMAP_IRQ 1494 help 1495 This enables support for the GPIOs found on the Kontron sl28 CPLD. 1496 1497 This driver can also be built as a module. If so, the module will be 1498 called gpio-sl28cpld. 1499 1500config GPIO_STMPE 1501 bool "STMPE GPIOs" 1502 depends on MFD_STMPE 1503 depends on OF_GPIO 1504 select GPIOLIB_IRQCHIP 1505 help 1506 This enables support for the GPIOs found on the STMPE I/O 1507 Expanders. 1508 1509config GPIO_TC3589X 1510 bool "TC3589X GPIOs" 1511 depends on MFD_TC3589X 1512 depends on OF_GPIO 1513 select GPIOLIB_IRQCHIP 1514 help 1515 This enables support for the GPIOs found on the TC3589X 1516 I/O Expander. 1517 1518config GPIO_TIMBERDALE 1519 bool "Support for timberdale GPIO IP" 1520 depends on MFD_TIMBERDALE 1521 help 1522 Add support for the GPIO IP in the timberdale FPGA. 1523 1524config GPIO_TN48M_CPLD 1525 tristate "Delta Networks TN48M switch CPLD GPIO driver" 1526 depends on MFD_TN48M_CPLD 1527 select GPIO_REGMAP 1528 help 1529 This enables support for the GPIOs found on the Delta 1530 Networks TN48M switch Lattice CPLD. It provides 12 pins in total, 1531 they are input-only or output-only type. 1532 1533 This driver can also be built as a module. If so, the 1534 module will be called gpio-tn48m. 1535 1536config GPIO_TPS65086 1537 tristate "TI TPS65086 GPO" 1538 depends on MFD_TPS65086 1539 help 1540 This driver supports the GPO on TI TPS65086x PMICs. 1541 1542config GPIO_TPS65218 1543 tristate "TPS65218 GPIO" 1544 depends on MFD_TPS65218 1545 help 1546 Select this option to enable GPIO driver for the TPS65218 1547 chip family. 1548 1549config GPIO_TPS65219 1550 tristate "TPS65219 GPIO" 1551 depends on MFD_TPS65219 1552 default MFD_TPS65219 1553 help 1554 Select this option to enable GPIO driver for the TPS65219 chip 1555 family. 1556 GPIO0 is statically configured as either input or output prior to 1557 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting 1558 is statically configured by NVM. GPIO0 can't be used as a generic 1559 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when 1560 MULTI_DEVICE_EN=1. 1561 1562 This driver can also be built as a module. If so, the module will be 1563 called gpio_tps65219. 1564 1565config GPIO_TPS6586X 1566 bool "TPS6586X GPIO" 1567 depends on MFD_TPS6586X 1568 help 1569 Select this option to enable GPIO driver for the TPS6586X 1570 chip family. 1571 1572config GPIO_TPS65910 1573 bool "TPS65910 GPIO" 1574 depends on MFD_TPS65910 1575 help 1576 Select this option to enable GPIO driver for the TPS65910 1577 chip family. 1578 1579config GPIO_TPS65912 1580 tristate "TI TPS65912 GPIO" 1581 depends on MFD_TPS65912 1582 help 1583 This driver supports TPS65912 GPIO chip. 1584 1585config GPIO_TPS68470 1586 tristate "TPS68470 GPIO" 1587 depends on INTEL_SKL_INT3472 1588 help 1589 Select this option to enable GPIO driver for the TPS68470 1590 chip family. 1591 There are 7 GPIOs and few sensor-related GPIOs supported 1592 by the TPS68470. While the 7 GPIOs can be configured as 1593 input or output as appropriate, the sensor related GPIOs 1594 are "output only" GPIOs. 1595 1596config GPIO_TQMX86 1597 tristate "TQ-Systems TQMx86 GPIO" 1598 depends on MFD_TQMX86 || COMPILE_TEST 1599 depends on HAS_IOPORT_MAP 1600 select GPIOLIB_IRQCHIP 1601 help 1602 This driver supports GPIO on the TQMX86 IO controller. 1603 1604config GPIO_TWL4030 1605 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 1606 depends on TWL4030_CORE 1607 help 1608 Say yes here to access the GPIO signals of various multi-function 1609 power management chips from Texas Instruments. 1610 1611config GPIO_TWL6040 1612 tristate "TWL6040 GPO" 1613 depends on TWL6040_CORE 1614 help 1615 Say yes here to access the GPO signals of twl6040 1616 audio chip from Texas Instruments. 1617 1618config GPIO_WHISKEY_COVE 1619 tristate "GPIO support for Whiskey Cove PMIC" 1620 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC 1621 select GPIOLIB_IRQCHIP 1622 help 1623 Support for GPIO pins on Whiskey Cove PMIC. 1624 1625 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC 1626 inside. 1627 1628 This driver can also be built as a module. If so, the module will be 1629 called gpio-wcove. 1630 1631config GPIO_WM831X 1632 tristate "WM831x GPIOs" 1633 depends on MFD_WM831X 1634 help 1635 Say yes here to access the GPIO signals of WM831x power management 1636 chips from Wolfson Microelectronics. 1637 1638config GPIO_WM8350 1639 tristate "WM8350 GPIOs" 1640 depends on MFD_WM8350 1641 help 1642 Say yes here to access the GPIO signals of WM8350 power management 1643 chips from Wolfson Microelectronics. 1644 1645config GPIO_WM8994 1646 tristate "WM8994 GPIOs" 1647 depends on MFD_WM8994 1648 help 1649 Say yes here to access the GPIO signals of WM8994 audio hub 1650 CODECs from Wolfson Microelectronics. 1651 1652endmenu 1653 1654menu "PCI GPIO expanders" 1655 depends on PCI 1656 1657config GPIO_AMD8111 1658 tristate "AMD 8111 GPIO driver" 1659 depends on X86 || COMPILE_TEST 1660 depends on HAS_IOPORT_MAP 1661 help 1662 The AMD 8111 southbridge contains 32 GPIO pins which can be used. 1663 1664 Note that usually system firmware/ACPI handles GPIO pins on their 1665 own and users might easily break their systems with uncareful usage 1666 of this driver! 1667 1668 If unsure, say N 1669 1670config GPIO_BT8XX 1671 tristate "BT8XX GPIO abuser" 1672 depends on VIDEO_BT848=n 1673 help 1674 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 1675 as a cheap PCI GPIO card. 1676 1677 This chip can be found on Miro, Hauppauge and STB TV-cards. 1678 1679 The card needs to be physically altered for using it as a 1680 GPIO card. For more information on how to build a GPIO card 1681 from a BT8xx TV card, see the documentation file at 1682 Documentation/driver-api/gpio/bt8xxgpio.rst 1683 1684 If unsure, say N. 1685 1686config GPIO_MERRIFIELD 1687 tristate "Intel Merrifield GPIO support" 1688 depends on X86_INTEL_MID 1689 select GPIO_TANGIER 1690 help 1691 Say Y here to support Intel Merrifield GPIO. 1692 1693config GPIO_MLXBF 1694 tristate "Mellanox BlueField SoC GPIO" 1695 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1696 select GPIO_GENERIC 1697 help 1698 Say Y here if you want GPIO support on Mellanox BlueField SoC. 1699 1700config GPIO_MLXBF2 1701 tristate "Mellanox BlueField 2 SoC GPIO" 1702 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1703 select GPIO_GENERIC 1704 select GPIOLIB_IRQCHIP 1705 help 1706 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC. 1707 1708config GPIO_MLXBF3 1709 tristate "Mellanox BlueField 3 SoC GPIO" 1710 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST 1711 select GPIO_GENERIC 1712 select GPIOLIB_IRQCHIP 1713 help 1714 Say Y if you want GPIO support on Mellanox BlueField 3 SoC. 1715 This GPIO controller supports interrupt handling and enables the 1716 manipulation of certain GPIO pins. 1717 This controller should be used in parallel with pinctrl-mlxbf3 to 1718 control the desired GPIOs. 1719 This driver can also be built as a module called mlxbf3-gpio. 1720 1721config GPIO_ML_IOH 1722 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 1723 depends on X86 || COMPILE_TEST 1724 select GENERIC_IRQ_CHIP 1725 help 1726 ML7213 is companion chip for Intel Atom E6xx series. 1727 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output 1728 Hub) which is for IVI (In-Vehicle Infotainment) use. 1729 This driver can access the IOH's GPIO device. 1730 1731config GPIO_PCH 1732 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO" 1733 depends on X86_32 || MIPS || COMPILE_TEST 1734 select GENERIC_IRQ_CHIP 1735 help 1736 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff, 1737 which is an IOH (Input/Output Hub) for x86 embedded processor. 1738 This driver can access PCH GPIO device. 1739 1740 This driver also can be used for LAPIS Semiconductor IOH (Input/ 1741 Output Hub), ML7223 and ML7831. 1742 ML7223 IOH is for MP (Media Phone) use. 1743 ML7831 IOH is for general purpose use. 1744 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1745 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1746 1747config GPIO_PCI_IDIO_16 1748 tristate "ACCES PCI-IDIO-16 GPIO support" 1749 select REGMAP_MMIO 1750 select GPIO_IDIO_16 1751 help 1752 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is 1753 generated when any of the inputs change state (low to high or high to 1754 low). Input filter control is not supported by this driver, and the 1755 input filters are deactivated by this driver. 1756 1757config GPIO_PCIE_IDIO_24 1758 tristate "ACCES PCIe-IDIO-24 GPIO support" 1759 select REGMAP_IRQ 1760 select REGMAP_MMIO 1761 select GPIOLIB_IRQCHIP 1762 select GPIO_REGMAP 1763 help 1764 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24, 1765 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated 1766 when any of the inputs change state (low to high or high to low). 1767 Input filter control is not supported by this driver, and the input 1768 filters are deactivated by this driver. 1769 1770config GPIO_RDC321X 1771 tristate "RDC R-321x GPIO support" 1772 select MFD_CORE 1773 select MFD_RDC321X 1774 help 1775 Support for the RDC R321x SoC GPIOs over southbridge 1776 PCI configuration space. 1777 1778config GPIO_SODAVILLE 1779 bool "Intel Sodaville GPIO support" 1780 depends on X86 && OF 1781 select GPIO_GENERIC 1782 select GENERIC_IRQ_CHIP 1783 help 1784 Say Y here to support Intel Sodaville GPIO. 1785 1786endmenu 1787 1788menu "SPI GPIO expanders" 1789 depends on SPI_MASTER 1790 1791config GPIO_74X164 1792 tristate "74x164 serial-in/parallel-out 8-bits shift register" 1793 depends on OF_GPIO 1794 help 1795 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 1796 shift registers. This driver can be used to provide access 1797 to more GPIO outputs. 1798 1799config GPIO_MAX3191X 1800 tristate "Maxim MAX3191x industrial serializer" 1801 select CRC8 1802 help 1803 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913, 1804 MAX31953 and MAX31963 industrial serializer, a daisy-chainable 1805 chip to make 8 digital 24V inputs available via SPI. Supports 1806 CRC checksums to guard against electromagnetic interference, 1807 as well as undervoltage and overtemperature detection. 1808 1809config GPIO_MAX7301 1810 tristate "Maxim MAX7301 GPIO expander" 1811 select GPIO_MAX730X 1812 help 1813 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1814 1815config GPIO_MC33880 1816 tristate "Freescale MC33880 high-side/low-side switch" 1817 help 1818 SPI driver for Freescale MC33880 high-side/low-side switch. 1819 This provides GPIO interface supporting inputs and outputs. 1820 1821config GPIO_PISOSR 1822 tristate "Generic parallel-in/serial-out shift register" 1823 help 1824 GPIO driver for SPI compatible parallel-in/serial-out shift 1825 registers. These are input only devices. 1826 1827config GPIO_XRA1403 1828 tristate "EXAR XRA1403 16-bit GPIO expander" 1829 select REGMAP_SPI 1830 help 1831 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander. 1832 1833config GPIO_MOXTET 1834 tristate "Turris Mox Moxtet bus GPIO expander" 1835 depends on MOXTET 1836 help 1837 Say yes here if you are building for the Turris Mox router. 1838 This is the driver needed for configuring the GPIOs via the Moxtet 1839 bus. For example the Mox module with SFP cage needs this driver 1840 so that phylink can use corresponding GPIOs. 1841 1842endmenu 1843 1844menu "USB GPIO expanders" 1845 depends on USB 1846 1847config GPIO_VIPERBOARD 1848 tristate "Viperboard GPIO a & b support" 1849 depends on MFD_VIPERBOARD 1850 help 1851 Say yes here to access the GPIO signals of Nano River 1852 Technologies Viperboard. There are two GPIO chips on the 1853 board: gpioa and gpiob. 1854 See viperboard API specification and Nano 1855 River Tech's viperboard.h for detailed meaning 1856 of the module parameters. 1857 1858config GPIO_MPSSE 1859 tristate "FTDI MPSSE GPIO support" 1860 select GPIOLIB_IRQCHIP 1861 help 1862 GPIO driver for FTDI's MPSSE interface. These can do input and 1863 output. Each MPSSE provides 16 IO pins. 1864 1865endmenu 1866 1867menu "Virtual GPIO drivers" 1868 1869config GPIO_AGGREGATOR 1870 tristate "GPIO Aggregator" 1871 help 1872 Say yes here to enable the GPIO Aggregator, which provides a way to 1873 aggregate existing GPIO lines into a new virtual GPIO chip. 1874 This can serve the following purposes: 1875 - Assign permissions for a collection of GPIO lines to a user, 1876 - Export a collection of GPIO lines to a virtual machine, 1877 - Provide a generic driver for a GPIO-operated device in an 1878 industrial control context, to be operated from userspace using 1879 the GPIO chardev interface. 1880 1881config GPIO_LATCH 1882 tristate "GPIO latch driver" 1883 help 1884 Say yes here to enable a driver for GPIO multiplexers based on latches 1885 connected to other GPIOs. 1886 1887config GPIO_MOCKUP 1888 tristate "GPIO Testing Driver (DEPRECATED)" 1889 select IRQ_SIM 1890 help 1891 This module is DEPRECATED. Please consider using gpio-sim instead. 1892 1893 This enables GPIO Testing driver, which provides a way to test GPIO 1894 subsystem through sysfs (or char device) and debugfs. 1895 User could use it through the script in 1896 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in 1897 it. 1898 1899config GPIO_VIRTIO 1900 tristate "VirtIO GPIO support" 1901 depends on VIRTIO 1902 select GPIOLIB_IRQCHIP 1903 help 1904 Say Y here to enable guest support for virtio-based GPIO controllers. 1905 1906 These virtual GPIOs can be routed to real GPIOs or attached to 1907 simulators on the host (like QEMU). 1908 1909config GPIO_SIM 1910 tristate "GPIO Simulator Module" 1911 select IRQ_SIM 1912 select CONFIGFS_FS 1913 help 1914 This enables the GPIO simulator - a configfs-based GPIO testing 1915 driver. 1916 1917endmenu 1918 1919menu "GPIO Debugging utilities" 1920 1921config GPIO_SLOPPY_LOGIC_ANALYZER 1922 tristate "Sloppy GPIO logic analyzer" 1923 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT 1924 help 1925 This option enables support for a sloppy logic analyzer using polled 1926 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with 1927 this driver. The script will make it easier to use and will also 1928 isolate a CPU for the polling task. Note that this is a last resort 1929 analyzer which can be affected by latencies, non-deterministic code 1930 paths, or NMIs. However, for e.g. remote development, it may be useful 1931 to get a first view and aid further debugging. 1932 1933 If this driver is built as a module it will be called 1934 'gpio-sloppy-logic-analyzer'. 1935 1936config GPIO_VIRTUSER 1937 tristate "GPIO Virtual User Testing Module" 1938 select DEBUG_FS 1939 select CONFIGFS_FS 1940 select IRQ_WORK 1941 help 1942 Say Y here to enable the configurable, configfs-based virtual GPIO 1943 consumer testing driver. 1944 1945 This driver is aimed as a helper in spotting any regressions in 1946 hot-unplug handling in GPIOLIB. 1947 1948endmenu 1949 1950endif 1951