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