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 def_bool y 486 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST 487 select GENERIC_IRQ_CHIP 488 select REGMAP_MMIO 489 490config GPIO_MXC 491 tristate "i.MX GPIO support" 492 depends on ARCH_MXC || COMPILE_TEST 493 select GPIO_GENERIC 494 select GENERIC_IRQ_CHIP 495 496config GPIO_MXS 497 bool "Freescale MXS GPIO support" if COMPILE_TEST 498 depends on ARCH_MXS || COMPILE_TEST 499 default y if ARCH_MXS 500 select GPIO_GENERIC 501 select GENERIC_IRQ_CHIP 502 503config GPIO_NOMADIK 504 bool "Nomadik GPIO driver" 505 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST 506 select GPIOLIB_IRQCHIP 507 help 508 Say yes here to support the Nomadik SoC GPIO block. This block is also 509 used by the Mobileye EyeQ5 SoC. 510 511 It handles up to 32 GPIOs per bank, that can all be interrupt sources. 512 It is deeply interconnected with the associated pinctrl driver as GPIO 513 registers handle muxing ("alternate functions") as well. 514 515config GPIO_NPCM_SGPIO 516 bool "Nuvoton SGPIO support" 517 depends on ARCH_NPCM || COMPILE_TEST 518 select GPIOLIB_IRQCHIP 519 help 520 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality. 521 522config GPIO_OCTEON 523 tristate "Cavium OCTEON GPIO" 524 depends on CAVIUM_OCTEON_SOC 525 default y 526 help 527 Say yes here to support the on-chip GPIO lines on the OCTEON 528 family of SOCs. 529 530config GPIO_OMAP 531 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST 532 default y if ARCH_OMAP 533 depends on ARM 534 select GENERIC_IRQ_CHIP 535 select GPIOLIB_IRQCHIP 536 help 537 Say yes here to enable GPIO support for TI OMAP SoCs. 538 539config GPIO_PL061 540 tristate "PrimeCell PL061 GPIO support" 541 depends on ARM_AMBA 542 select IRQ_DOMAIN 543 select GPIOLIB_IRQCHIP 544 help 545 Say yes here to support the PrimeCell PL061 GPIO device. 546 547config GPIO_POLARFIRE_SOC 548 bool "Microchip FPGA GPIO support" 549 select REGMAP_MMIO 550 help 551 Say yes here to support the GPIO controllers on Microchip FPGAs. 552 553config GPIO_PXA 554 bool "PXA GPIO support" 555 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST 556 help 557 Say yes here to support the PXA GPIO device. 558 559config GPIO_RCAR 560 tristate "Renesas R-Car and RZ/G GPIO support" 561 depends on ARCH_RENESAS || COMPILE_TEST 562 select GPIOLIB_IRQCHIP 563 help 564 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs. 565 566config GPIO_RDA 567 bool "RDA Micro GPIO controller support" 568 depends on ARCH_RDA || COMPILE_TEST 569 depends on OF_GPIO 570 select GPIO_GENERIC 571 select GPIOLIB_IRQCHIP 572 help 573 Say Y here to support RDA Micro GPIO controller. 574 575config GPIO_REALTEK_OTTO 576 tristate "Realtek Otto GPIO support" 577 depends on MACH_REALTEK_RTL 578 default MACH_REALTEK_RTL 579 select GPIO_GENERIC 580 select GPIOLIB_IRQCHIP 581 help 582 The GPIO controller on the Otto MIPS platform supports up to two 583 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs 584 are grouped in four 8-bit wide ports. 585 586 When built as a module, the module will be called realtek_otto_gpio. 587 588config GPIO_REG 589 bool 590 help 591 A 32-bit single register GPIO fixed in/out implementation. This 592 can be used to represent any register as a set of GPIO signals. 593 594config GPIO_ROCKCHIP 595 tristate "Rockchip GPIO support" 596 depends on ARCH_ROCKCHIP || COMPILE_TEST 597 select GENERIC_IRQ_CHIP 598 select GPIOLIB_IRQCHIP 599 default ARCH_ROCKCHIP 600 help 601 Say yes here to support GPIO on Rockchip SoCs. 602 603config GPIO_RTD 604 tristate "Realtek DHC GPIO support" 605 depends on ARCH_REALTEK 606 default y 607 select GPIOLIB_IRQCHIP 608 help 609 This option enables support for GPIOs found on Realtek DHC(Digital 610 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319, 611 RTD1319D, RTD1395, RTD1619 and RTD1619B. 612 613 Say yes here to support GPIO functionality and GPIO interrupt on 614 Realtek DHC SoCs. 615 616config GPIO_SAMA5D2_PIOBU 617 tristate "SAMA5D2 PIOBU GPIO support" 618 depends on MFD_SYSCON 619 depends on OF_GPIO 620 depends on ARCH_AT91 || COMPILE_TEST 621 select GPIO_SYSCON 622 help 623 Say yes here to use the PIOBU pins as GPIOs. 624 625 PIOBU pins on the SAMA5D2 can be used as GPIOs. 626 The difference from regular GPIOs is that they 627 maintain their value during backup/self-refresh. 628 629config GPIO_SIFIVE 630 tristate "SiFive GPIO support" 631 depends on OF_GPIO 632 select IRQ_DOMAIN_HIERARCHY 633 select GPIO_GENERIC 634 select GPIOLIB_IRQCHIP 635 select REGMAP_MMIO 636 help 637 Say yes here to support the GPIO device on SiFive SoCs. 638 639config GPIO_SIOX 640 tristate "SIOX GPIO support" 641 depends on SIOX 642 select GPIOLIB_IRQCHIP 643 help 644 Say yes here to support SIOX I/O devices. These are units connected 645 via a SIOX bus and have a number of fixed-direction I/O lines. 646 647config GPIO_SNPS_CREG 648 bool "Synopsys GPIO via CREG (Control REGisters) driver" 649 depends on ARC || COMPILE_TEST 650 depends on OF_GPIO 651 help 652 This driver supports GPIOs via CREG on various Synopsys SoCs. 653 This is a single-register MMIO GPIO driver for complex cases 654 where only several fields in register belong to GPIO lines and 655 each GPIO line owns a field with different length and on/off value. 656 657config GPIO_SPEAR_SPICS 658 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 659 depends on PLAT_SPEAR 660 select GENERIC_IRQ_CHIP 661 help 662 Say yes here to support ST SPEAr SPI Chip Select as GPIO device. 663 664config GPIO_SPRD 665 tristate "Spreadtrum GPIO support" 666 depends on ARCH_SPRD || COMPILE_TEST 667 depends on OF_GPIO 668 select GPIOLIB_IRQCHIP 669 help 670 Say yes here to support Spreadtrum GPIO device. 671 672config GPIO_STP_XWAY 673 bool "XWAY STP GPIOs" 674 depends on SOC_XWAY || COMPILE_TEST 675 depends on OF_GPIO 676 help 677 This enables support for the Serial To Parallel (STP) unit found on 678 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 679 that can be up to 24 bits. This peripheral is aimed at driving LEDs. 680 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and 681 phy status. 682 683config GPIO_SYSCON 684 tristate "GPIO based on SYSCON" 685 depends on MFD_SYSCON && OF 686 help 687 Say yes here to support GPIO functionality though SYSCON driver. 688 689config GPIO_TANGIER 690 tristate 691 select GPIOLIB_IRQCHIP 692 help 693 GPIO support for Intel Tangier and compatible platforms. 694 Currently supported: 695 - Elkhart Lake 696 - Merrifield 697 698 If built as a module its name will be gpio-tangier. 699 700config GPIO_TB10X 701 bool 702 select GPIO_GENERIC 703 select GENERIC_IRQ_CHIP 704 select OF_GPIO 705 706config GPIO_TEGRA 707 tristate "NVIDIA Tegra GPIO support" 708 default ARCH_TEGRA 709 depends on ARCH_TEGRA || COMPILE_TEST 710 depends on OF_GPIO 711 select GPIOLIB_IRQCHIP 712 select IRQ_DOMAIN_HIERARCHY 713 help 714 Say yes here to support GPIO pins on NVIDIA Tegra SoCs. 715 716config GPIO_TEGRA186 717 tristate "NVIDIA Tegra186 GPIO support" 718 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC 719 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST 720 depends on OF_GPIO 721 select GPIOLIB_IRQCHIP 722 select IRQ_DOMAIN_HIERARCHY 723 help 724 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs. 725 726config GPIO_TS4800 727 tristate "TS-4800 DIO blocks and compatibles" 728 depends on OF_GPIO 729 depends on SOC_IMX51 || COMPILE_TEST 730 select GPIO_GENERIC 731 help 732 This driver support TS-4800 FPGA GPIO controllers. 733 734config GPIO_THUNDERX 735 tristate "Cavium ThunderX/OCTEON-TX GPIO" 736 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST) 737 depends on PCI_MSI 738 select GPIOLIB_IRQCHIP 739 select IRQ_DOMAIN_HIERARCHY 740 select IRQ_FASTEOI_HIERARCHY_HANDLERS 741 help 742 Say yes here to support the on-chip GPIO lines on the ThunderX 743 and OCTEON-TX families of SoCs. 744 745config GPIO_UNIPHIER 746 tristate "UniPhier GPIO support" 747 depends on ARCH_UNIPHIER || COMPILE_TEST 748 depends on OF_GPIO 749 select IRQ_DOMAIN_HIERARCHY 750 help 751 Say yes here to support UniPhier GPIOs. 752 753config GPIO_VF610 754 bool "VF610 GPIO support" 755 default y if SOC_VF610 756 depends on ARCH_MXC || COMPILE_TEST 757 select GPIOLIB_IRQCHIP 758 help 759 Say yes here to support i.MX or Vybrid vf610 GPIOs. 760 761config GPIO_VISCONTI 762 tristate "Toshiba Visconti GPIO support" 763 depends on ARCH_VISCONTI || COMPILE_TEST 764 depends on OF_GPIO 765 select GPIOLIB_IRQCHIP 766 select GPIO_GENERIC 767 select IRQ_DOMAIN_HIERARCHY 768 help 769 Say yes here to support GPIO on Tohisba Visconti. 770 771config GPIO_WCD934X 772 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver" 773 depends on MFD_WCD934X && OF_GPIO 774 help 775 This driver is to support GPIO block found on the Qualcomm Technologies 776 Inc WCD9340/WCD9341 Audio Codec. 777 778config GPIO_XGENE 779 bool "APM X-Gene GPIO controller support" 780 depends on ARM64 && OF_GPIO 781 help 782 This driver is to support the GPIO block within the APM X-Gene SoC 783 platform's generic flash controller. The GPIO pins are muxed with 784 the generic flash controller's address and data pins. Say yes 785 here to enable the GFC GPIO functionality. 786 787config GPIO_XGENE_SB 788 tristate "APM X-Gene GPIO standby controller support" 789 depends on (ARCH_XGENE || COMPILE_TEST) 790 select GPIO_GENERIC 791 select GPIOLIB_IRQCHIP 792 select IRQ_DOMAIN_HIERARCHY 793 help 794 This driver supports the GPIO block within the APM X-Gene 795 Standby Domain. Say yes here to enable the GPIO functionality. 796 797config GPIO_XILINX 798 tristate "Xilinx GPIO support" 799 select GPIOLIB_IRQCHIP 800 help 801 Say yes here to support the Xilinx FPGA GPIO device. 802 803config GPIO_XLP 804 tristate "Cavium ThunderX2 GPIO support" 805 depends on ARCH_THUNDER2 || COMPILE_TEST 806 select GPIOLIB_IRQCHIP 807 help 808 This driver provides support for GPIO interface on Cavium's ThunderX2 809 CN99XX SoCs (Originally from Netlogic XLP). 810 811 If unsure, say N. 812 813config GPIO_XTENSA 814 bool "Xtensa GPIO32 support" 815 depends on XTENSA 816 depends on HAVE_XTENSA_GPIO32 817 depends on !SMP 818 help 819 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 820 and EXPSTATE (output) ports. 821 822config GPIO_ZEVIO 823 bool "LSI ZEVIO SoC memory mapped GPIOs" 824 depends on ARM 825 help 826 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 827 828config GPIO_ZYNQ 829 tristate "Xilinx Zynq GPIO support" 830 depends on ARCH_ZYNQ || ARCH_ZYNQMP 831 select GPIOLIB_IRQCHIP 832 help 833 Say yes here to support Xilinx Zynq GPIO controller. 834 835config GPIO_ZYNQMP_MODEPIN 836 tristate "ZynqMP ps-mode pin GPIO configuration driver" 837 depends on ZYNQMP_FIRMWARE 838 default ZYNQMP_FIRMWARE 839 help 840 Say yes here to support the ZynqMP ps-mode pin GPIO configuration 841 driver. 842 843 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE 844 is 4-bits boot mode pins. It sets and gets the status of 845 the ps-mode pin. Every pin can be configured as input/output. 846 847config GPIO_LOONGSON1 848 tristate "Loongson1 GPIO support" 849 depends on MACH_LOONGSON32 850 select GPIO_GENERIC 851 help 852 Say Y or M here to support GPIO on Loongson1 SoCs. 853 854config GPIO_AMD_FCH 855 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" 856 help 857 This option enables driver for GPIO on AMD's Fusion Controller Hub, 858 as found on G-series SOCs (e.g. GX-412TC). 859 860 Note: This driver doesn't register itself automatically, as it 861 needs to be provided with platform-specific configuration. 862 (See e.g. CONFIG_PCENGINES_APU2.) 863 864config GPIO_MSC313 865 bool "MStar MSC313 GPIO support" 866 depends on ARCH_MSTARV7 867 default ARCH_MSTARV7 868 select GPIOLIB_IRQCHIP 869 select IRQ_DOMAIN_HIERARCHY 870 help 871 Say Y here to support the main GPIO block on MStar/SigmaStar 872 ARMv7-based SoCs. 873 874config GPIO_IDT3243X 875 tristate "IDT 79RC3243X GPIO support" 876 depends on MIKROTIK_RB532 || COMPILE_TEST 877 select GPIO_GENERIC 878 select GPIOLIB_IRQCHIP 879 help 880 Select this option to enable GPIO driver for 881 IDT 79RC3243X-based devices like Mikrotik RB532. 882 883 To compile this driver as a module, choose M here: the module will 884 be called gpio-idt3243x. 885 886endmenu 887 888menu "Port-mapped I/O GPIO drivers" 889 depends on X86 && HAS_IOPORT # I/O space access 890 891config GPIO_VX855 892 tristate "VIA VX855/VX875 GPIO" 893 depends on PCI 894 select MFD_CORE 895 select MFD_VX855 896 help 897 Support access to the VX855/VX875 GPIO lines through the GPIO library. 898 899 This driver provides common support for accessing the device. 900 Additional drivers must be enabled in order to use the 901 functionality of the device. 902 903config GPIO_I8255 904 tristate 905 select GPIO_REGMAP 906 help 907 Enables support for the i8255 interface library functions. The i8255 908 interface library provides functions to facilitate communication with 909 interfaces compatible with the venerable Intel 8255 Programmable 910 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released 911 in the early 1970s but compatible interfaces are nowadays typically 912 found embedded in larger VLSI processing chips and FPGA components. 913 914 If built as a module its name will be gpio-i8255. 915 916config GPIO_104_DIO_48E 917 tristate "ACCES 104-DIO-48E GPIO support" 918 depends on PC104 919 select ISA_BUS_API 920 select REGMAP_MMIO 921 select REGMAP_IRQ 922 select GPIOLIB_IRQCHIP 923 select GPIO_I8255 924 select I8254 925 help 926 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E, 927 104-DIO-24E). The base port addresses for the devices may be 928 configured via the base module parameter. The interrupt line numbers 929 for the devices may be configured via the irq module parameter. 930 931config GPIO_104_IDIO_16 932 tristate "ACCES 104-IDIO-16 GPIO support" 933 depends on PC104 934 select ISA_BUS_API 935 select REGMAP_MMIO 936 select GPIO_IDIO_16 937 help 938 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16, 939 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The 940 base port addresses for the devices may be configured via the base 941 module parameter. The interrupt line numbers for the devices may be 942 configured via the irq module parameter. 943 944config GPIO_104_IDI_48 945 tristate "ACCES 104-IDI-48 GPIO support" 946 depends on PC104 947 select ISA_BUS_API 948 select REGMAP_MMIO 949 select REGMAP_IRQ 950 select GPIOLIB_IRQCHIP 951 select GPIO_REGMAP 952 help 953 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A, 954 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for 955 the devices may be configured via the base module parameter. The 956 interrupt line numbers for the devices may be configured via the irq 957 module parameter. 958 959config GPIO_F7188X 960 tristate "Fintek and Nuvoton Super-I/O GPIO support" 961 help 962 This option enables support for GPIOs found on Fintek Super-I/O 963 chips F71869, F71869A, F71882FG, F71889F and F81866. 964 As well as Nuvoton Super-I/O chip NCT6126D. 965 966 To compile this driver as a module, choose M here: the module will 967 be called f7188x-gpio. 968 969config GPIO_GPIO_MM 970 tristate "Diamond Systems GPIO-MM GPIO support" 971 depends on PC104 972 select ISA_BUS_API 973 select REGMAP_MMIO 974 select GPIO_I8255 975 help 976 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12. 977 978 The Diamond Systems GPIO-MM device features 48 lines of digital I/O 979 via the emulation of dual 82C55A PPI chips. This driver provides GPIO 980 support for these 48 channels of digital I/O. 981 982 The base port addresses for the devices may be configured via the base 983 array module parameter. 984 985config GPIO_IT87 986 tristate "IT87xx GPIO support" 987 help 988 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 989 990 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 991 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as 992 well. 993 994 To compile this driver as a module, choose M here: the module will 995 be called gpio_it87. 996 997config GPIO_SCH 998 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 999 depends on (X86 || COMPILE_TEST) && ACPI 1000 depends on LPC_SCH 1001 select GPIOLIB_IRQCHIP 1002 help 1003 Say yes here to support GPIO interface on Intel Poulsbo SCH, 1004 Intel Tunnel Creek processor, Intel Centerton processor or 1005 Intel Quark X1000 SoC. 1006 1007 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 1008 powered by the core power rail and are turned off during sleep 1009 modes (S3 and higher). The remaining four GPIOs are powered by 1010 the Intel SCH suspend power supply. These GPIOs remain 1011 active during S3. The suspend-powered GPIOs can be used to wake the 1012 system from the Suspend-to-RAM state. 1013 1014 The Intel Tunnel Creek processor has 5 GPIOs powered by the 1015 core power rail and 9 from suspend power supply. 1016 1017 The Intel Centerton processor has a total of 30 GPIO pins. 1018 Twenty-one are powered by the core power rail and 9 from the 1019 suspend power supply. 1020 1021 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 1022 power well and 6 from the suspend power well. 1023 1024config GPIO_SCH311X 1025 tristate "SMSC SCH311x SuperI/O GPIO" 1026 help 1027 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 1028 SCH3116 "Super I/O" chipsets. 1029 1030 To compile this driver as a module, choose M here: the module will 1031 be called gpio-sch311x. 1032 1033config GPIO_TS5500 1034 tristate "TS-5500 DIO blocks and compatibles" 1035 depends on TS5500 || COMPILE_TEST 1036 help 1037 This driver supports Digital I/O exposed by pin blocks found on some 1038 Technologic Systems platforms. It includes, but is not limited to, 3 1039 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 1040 LCD port. 1041 1042config GPIO_WINBOND 1043 tristate "Winbond Super I/O GPIO support" 1044 select ISA_BUS_API 1045 help 1046 This option enables support for GPIOs found on Winbond Super I/O 1047 chips. 1048 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is 1049 supported. 1050 1051 You will need to provide a module parameter "gpios", or a 1052 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO 1053 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.). 1054 1055 To compile this driver as a module, choose M here: the module will 1056 be called gpio-winbond. 1057 1058config GPIO_WS16C48 1059 tristate "WinSystems WS16C48 GPIO support" 1060 select ISA_BUS_API 1061 select REGMAP_IRQ 1062 select REGMAP_MMIO 1063 select GPIOLIB_IRQCHIP 1064 select GPIO_REGMAP 1065 help 1066 Enables GPIO support for the WinSystems WS16C48. The base port 1067 addresses for the devices may be configured via the base module 1068 parameter. The interrupt line numbers for the devices may be 1069 configured via the irq module parameter. 1070 1071endmenu 1072 1073menu "I2C GPIO expanders" 1074 depends on I2C 1075 1076config GPIO_ADNP 1077 tristate "Avionic Design N-bit GPIO expander" 1078 depends on OF_GPIO 1079 select GPIOLIB_IRQCHIP 1080 help 1081 This option enables support for N GPIOs found on Avionic Design 1082 I2C GPIO expanders. The register space will be extended by powers 1083 of two, so the controller will need to accommodate for that. For 1084 example: if a controller provides 48 pins, 6 registers will be 1085 enough to represent all pins, but the driver will assume a 1086 register layout for 64 pins (8 registers). 1087 1088config GPIO_FXL6408 1089 tristate "FXL6408 I2C GPIO expander" 1090 select GPIO_REGMAP 1091 select REGMAP_I2C 1092 help 1093 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander. 1094 1095 To compile this driver as a module, choose M here: the module will 1096 be called gpio-fxl6408. 1097 1098config GPIO_DS4520 1099 tristate "DS4520 I2C GPIO expander" 1100 select REGMAP_I2C 1101 select GPIO_REGMAP 1102 help 1103 GPIO driver for ADI DS4520 I2C-based GPIO expander. 1104 Say yes here to enable the GPIO driver for the ADI DS4520 chip. 1105 1106 To compile this driver as a module, choose M here: the module will 1107 be called gpio-ds4520. 1108 1109config GPIO_GW_PLD 1110 tristate "Gateworks PLD GPIO Expander" 1111 depends on OF_GPIO 1112 help 1113 Say yes here to provide access to the Gateworks I2C PLD GPIO 1114 Expander. This is used at least on the Cambria GW2358-4. 1115 1116config GPIO_MAX7300 1117 tristate "Maxim MAX7300 GPIO expander" 1118 select GPIO_MAX730X 1119 help 1120 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 1121 1122config GPIO_MAX732X 1123 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 1124 help 1125 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 1126 Port Expanders. Each IO port on these chips has a fixed role of 1127 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 1128 Input and Output (designed by 'P'). The combinations are listed 1129 below: 1130 1131 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 1132 max7322 (4I4O), max7323 (4P4O) 1133 1134 16 bits: max7324 (8I8O), max7325 (8P8O), 1135 max7326 (4I12O), max7327 (4P12O) 1136 1137 Board setup code must specify the model to use, and the start 1138 number for these GPIOs. 1139 1140config GPIO_MAX732X_IRQ 1141 bool "Interrupt controller support for MAX732x" 1142 depends on GPIO_MAX732X=y 1143 select GPIOLIB_IRQCHIP 1144 help 1145 Say yes here to enable the max732x to be used as an interrupt 1146 controller. It requires the driver to be built in the kernel. 1147 1148config GPIO_PCA953X 1149 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 1150 select REGMAP_I2C 1151 help 1152 Say yes here to provide access to several register-oriented 1153 SMBus I/O expanders, made mostly by NXP or TI. Compatible 1154 models include: 1155 1156 4 bits: pca9536, pca9537 1157 1158 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 1159 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202 1160 1161 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 1162 tca6416 1163 1164 24 bits: tca6424 1165 1166 40 bits: pca9505, pca9698 1167 1168config GPIO_PCA953X_IRQ 1169 bool "Interrupt controller support for PCA953x" 1170 depends on GPIO_PCA953X 1171 select GPIOLIB_IRQCHIP 1172 help 1173 Say yes here to enable the pca953x to be used as an interrupt 1174 controller. 1175 1176config GPIO_PCA9570 1177 tristate "PCA9570 4-Bit I2C GPO expander" 1178 help 1179 Say yes here to enable the GPO driver for the NXP PCA9570 chip. 1180 1181 To compile this driver as a module, choose M here: the module will 1182 be called gpio-pca9570. 1183 1184config GPIO_PCF857X 1185 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 1186 select GPIOLIB_IRQCHIP 1187 select IRQ_DOMAIN 1188 help 1189 Say yes here to provide access to most "quasi-bidirectional" I2C 1190 GPIO expanders used for additional digital outputs or inputs. 1191 Most of these parts are from NXP, though TI is a second source for 1192 some of them. Compatible models include: 1193 1194 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 1195 pca9670, pca9672, pca9674, pca9674a, 1196 max7328, max7329 1197 1198 16 bits: pcf8575, pcf8575c, pca8575, 1199 pca9671, pca9673, pca9675 1200 1201 Your board setup code will need to declare the expanders in 1202 use, and assign numbers to the GPIOs they expose. Those GPIOs 1203 can then be used from drivers and other kernel code, just like 1204 other GPIOs, but only accessible from task contexts. 1205 1206 This driver provides an in-kernel interface to those GPIOs using 1207 platform-neutral GPIO calls. 1208 1209config GPIO_TPIC2810 1210 tristate "TPIC2810 8-Bit I2C GPO expander" 1211 help 1212 Say yes here to enable the GPO driver for the TI TPIC2810 chip. 1213 1214 To compile this driver as a module, choose M here: the module will 1215 be called gpio-tpic2810. 1216 1217config GPIO_TS4900 1218 tristate "Technologic Systems FPGA I2C GPIO" 1219 depends on SOC_IMX6 || COMPILE_TEST 1220 select REGMAP_I2C 1221 help 1222 Say yes here to enabled the GPIO driver for Technologic's FPGA core. 1223 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990. 1224 1225endmenu 1226 1227menu "MFD GPIO expanders" 1228 1229config GPIO_ADP5520 1230 tristate "GPIO Support for ADP5520 PMIC" 1231 depends on PMIC_ADP5520 1232 help 1233 This option enables support for on-chip GPIO found 1234 on Analog Devices ADP5520 PMICs. 1235 1236config GPIO_ADP5585 1237 tristate "GPIO Support for ADP5585" 1238 depends on MFD_ADP5585 1239 help 1240 This option enables support for the GPIO function found in the Analog 1241 Devices ADP5585. 1242 1243config GPIO_ALTERA_A10SR 1244 tristate "Altera Arria10 System Resource GPIO" 1245 depends on MFD_ALTERA_A10SR 1246 help 1247 Driver for Arria10 Development Kit GPIO expansion which 1248 includes reads of pushbuttons and DIP switches as well 1249 as writes to LEDs. 1250 1251config GPIO_ARIZONA 1252 tristate "Wolfson Microelectronics Arizona class devices" 1253 depends on MFD_ARIZONA 1254 help 1255 Support for GPIOs on Wolfson Arizona class devices. 1256 1257config GPIO_BD71815 1258 tristate "ROHM BD71815 PMIC GPIO support" 1259 depends on MFD_ROHM_BD71828 1260 help 1261 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs 1262 available on the ROHM PMIC. 1263 1264 This driver can also be built as a module. If so, the module 1265 will be called gpio-bd71815. 1266 1267config GPIO_BD71828 1268 tristate "ROHM BD71828 GPIO support" 1269 depends on MFD_ROHM_BD71828 1270 help 1271 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs 1272 available on the ROHM PMIC in total. The GPIOs are limited to 1273 outputs only and pins must be configured to GPIO outputs by 1274 OTP. Enable this only if you want to use these pins as outputs. 1275 1276 This driver can also be built as a module. If so, the module 1277 will be called gpio-bd71828. 1278 1279config GPIO_BD9571MWV 1280 tristate "ROHM BD9571 GPIO support" 1281 depends on MFD_BD9571MWV 1282 help 1283 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs 1284 available on the ROHM PMIC in total, both of which can also 1285 generate interrupts. 1286 1287 This driver can also be built as a module. If so, the module 1288 will be called gpio-bd9571mwv. 1289 1290config GPIO_CGBC 1291 tristate "Congatec Board Controller GPIO support" 1292 depends on MFD_CGBC 1293 help 1294 Select this option to enable GPIO support for the Congatec Board 1295 Controller. 1296 1297 This driver can also be built as a module. If so, the module will be 1298 called gpio-cgbc. 1299 1300config GPIO_CROS_EC 1301 tristate "ChromeOS EC GPIO support" 1302 depends on CROS_EC 1303 help 1304 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs 1305 cannot be set unless the system is unlocked. 1306 1307 This driver can also be built as a module. If so, the module 1308 will be called gpio-cros-ec. 1309 1310config GPIO_CRYSTAL_COVE 1311 tristate "GPIO support for Crystal Cove PMIC" 1312 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC 1313 select GPIOLIB_IRQCHIP 1314 help 1315 Support for GPIO pins on Crystal Cove PMIC. 1316 1317 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC 1318 inside. 1319 1320 This driver can also be built as a module. If so, the module will be 1321 called gpio-crystalcove. 1322 1323config GPIO_CS5535 1324 tristate "AMD CS5535/CS5536 GPIO support" 1325 depends on X86 || MIPS || COMPILE_TEST 1326 depends on MFD_CS5535 1327 help 1328 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 1329 can be used for quite a number of things. The CS5535/6 is found on 1330 AMD Geode and Lemote Yeeloong devices. 1331 1332 If unsure, say N. 1333 1334config GPIO_DA9052 1335 tristate "Dialog DA9052 GPIO" 1336 depends on PMIC_DA9052 1337 help 1338 Say yes here to enable the GPIO driver for the DA9052 chip. 1339 1340config GPIO_DA9055 1341 tristate "Dialog Semiconductor DA9055 GPIO" 1342 depends on MFD_DA9055 1343 help 1344 Say yes here to enable the GPIO driver for the DA9055 chip. 1345 1346 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 1347 be controlled by this driver. 1348 1349 If driver is built as a module it will be called gpio-da9055. 1350 1351config GPIO_DLN2 1352 tristate "Diolan DLN2 GPIO support" 1353 depends on MFD_DLN2 1354 select GPIOLIB_IRQCHIP 1355 1356 help 1357 Select this option to enable GPIO driver for the Diolan DLN2 1358 board. 1359 1360 This driver can also be built as a module. If so, the module 1361 will be called gpio-dln2. 1362 1363config HTC_EGPIO 1364 bool "HTC EGPIO support" 1365 depends on ARM 1366 help 1367 This driver supports the CPLD egpio chip present on 1368 several HTC phones. It provides basic support for input 1369 pins, output pins, and IRQs. 1370 1371config GPIO_ELKHARTLAKE 1372 tristate "Intel Elkhart Lake PSE GPIO support" 1373 depends on X86 || COMPILE_TEST 1374 select GPIO_TANGIER 1375 help 1376 Select this option to enable GPIO support for Intel Elkhart Lake 1377 PSE GPIO IP. 1378 1379 To compile this driver as a module, choose M here: the module will 1380 be called gpio-elkhartlake. 1381 1382config GPIO_JANZ_TTL 1383 tristate "Janz VMOD-TTL Digital IO Module" 1384 depends on MFD_JANZ_CMODIO 1385 help 1386 This enables support for the Janz VMOD-TTL Digital IO module. 1387 This driver provides support for driving the pins in output 1388 mode only. Input mode is not supported. 1389 1390config GPIO_KEMPLD 1391 tristate "Kontron ETX / COMexpress GPIO" 1392 depends on MFD_KEMPLD 1393 help 1394 This enables support for the PLD GPIO interface on some Kontron ETX 1395 and COMexpress (ETXexpress) modules. 1396 1397 This driver can also be built as a module. If so, the module will be 1398 called gpio-kempld. 1399 1400config GPIO_LJCA 1401 tristate "INTEL La Jolla Cove Adapter GPIO support" 1402 depends on USB_LJCA 1403 select GPIOLIB_IRQCHIP 1404 default USB_LJCA 1405 help 1406 Select this option to enable GPIO driver for the INTEL 1407 La Jolla Cove Adapter (LJCA) board. 1408 1409 This driver can also be built as a module. If so, the module 1410 will be called gpio-ljca. 1411 1412config GPIO_LP3943 1413 tristate "TI/National Semiconductor LP3943 GPIO expander" 1414 depends on MFD_LP3943 1415 help 1416 GPIO driver for LP3943 MFD. 1417 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 1418 Open drain outputs are required for this usage. 1419 1420config GPIO_LP873X 1421 tristate "TI LP873X GPO" 1422 depends on MFD_TI_LP873X 1423 help 1424 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present 1425 on LP873X PMICs. 1426 1427 This driver can also be built as a module. If so, the module will be 1428 called gpio-lp873x. 1429 1430config GPIO_LP87565 1431 tristate "TI LP87565 GPIO" 1432 depends on MFD_TI_LP87565 1433 help 1434 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present 1435 on LP87565 PMICs. 1436 1437 This driver can also be built as a module. If so, the module will be 1438 called gpio-lp87565. 1439 1440config GPIO_MADERA 1441 tristate "Cirrus Logic Madera class codecs" 1442 depends on PINCTRL_MADERA 1443 help 1444 Support for GPIOs on Cirrus Logic Madera class codecs. 1445 1446config GPIO_MAX77620 1447 tristate "GPIO support for PMIC MAX77620 and MAX20024" 1448 depends on MFD_MAX77620 1449 select GPIOLIB_IRQCHIP 1450 help 1451 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor. 1452 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The 1453 driver also provides interrupt support for each of the GPIOs. 1454 Say yes here to enable the max77620 to be used as GPIO controller. 1455 1456config GPIO_MAX77650 1457 tristate "Maxim MAX77650/77651 GPIO support" 1458 depends on MFD_MAX77650 1459 help 1460 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor. 1461 These chips have a single pin that can be configured as GPIO. 1462 1463config GPIO_PALMAS 1464 bool "TI PALMAS series PMICs GPIO" 1465 depends on MFD_PALMAS 1466 help 1467 Select this option to enable GPIO driver for the TI PALMAS 1468 series chip family. 1469 1470config GPIO_PMIC_EIC_SPRD 1471 tristate "Spreadtrum PMIC EIC support" 1472 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1473 depends on OF_GPIO 1474 select GPIOLIB_IRQCHIP 1475 help 1476 Say yes here to support Spreadtrum PMIC EIC device. 1477 1478config GPIO_RC5T583 1479 bool "RICOH RC5T583 GPIO" 1480 depends on MFD_RC5T583 1481 help 1482 Select this option to enable GPIO driver for the Ricoh RC5T583 1483 chip family. 1484 This driver provides the support for driving/reading the GPIO pins 1485 of RC5T583 device through standard GPIO library. 1486 1487config GPIO_SL28CPLD 1488 tristate "Kontron sl28cpld GPIO support" 1489 depends on MFD_SL28CPLD || COMPILE_TEST 1490 select GPIO_REGMAP 1491 select GPIOLIB_IRQCHIP 1492 select REGMAP_IRQ 1493 help 1494 This enables support for the GPIOs found on the Kontron sl28 CPLD. 1495 1496 This driver can also be built as a module. If so, the module will be 1497 called gpio-sl28cpld. 1498 1499config GPIO_STMPE 1500 bool "STMPE GPIOs" 1501 depends on MFD_STMPE 1502 depends on OF_GPIO 1503 select GPIOLIB_IRQCHIP 1504 help 1505 This enables support for the GPIOs found on the STMPE I/O 1506 Expanders. 1507 1508config GPIO_TC3589X 1509 bool "TC3589X GPIOs" 1510 depends on MFD_TC3589X 1511 depends on OF_GPIO 1512 select GPIOLIB_IRQCHIP 1513 help 1514 This enables support for the GPIOs found on the TC3589X 1515 I/O Expander. 1516 1517config GPIO_TIMBERDALE 1518 bool "Support for timberdale GPIO IP" 1519 depends on MFD_TIMBERDALE 1520 help 1521 Add support for the GPIO IP in the timberdale FPGA. 1522 1523config GPIO_TN48M_CPLD 1524 tristate "Delta Networks TN48M switch CPLD GPIO driver" 1525 depends on MFD_TN48M_CPLD 1526 select GPIO_REGMAP 1527 help 1528 This enables support for the GPIOs found on the Delta 1529 Networks TN48M switch Lattice CPLD. It provides 12 pins in total, 1530 they are input-only or output-only type. 1531 1532 This driver can also be built as a module. If so, the 1533 module will be called gpio-tn48m. 1534 1535config GPIO_TPS65086 1536 tristate "TI TPS65086 GPO" 1537 depends on MFD_TPS65086 1538 help 1539 This driver supports the GPO on TI TPS65086x PMICs. 1540 1541config GPIO_TPS65218 1542 tristate "TPS65218 GPIO" 1543 depends on MFD_TPS65218 1544 help 1545 Select this option to enable GPIO driver for the TPS65218 1546 chip family. 1547 1548config GPIO_TPS65219 1549 tristate "TPS65219 GPIO" 1550 depends on MFD_TPS65219 1551 default MFD_TPS65219 1552 help 1553 Select this option to enable GPIO driver for the TPS65219 chip 1554 family. 1555 GPIO0 is statically configured as either input or output prior to 1556 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting 1557 is statically configured by NVM. GPIO0 can't be used as a generic 1558 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when 1559 MULTI_DEVICE_EN=1. 1560 1561 This driver can also be built as a module. If so, the module will be 1562 called gpio_tps65219. 1563 1564config GPIO_TPS6586X 1565 bool "TPS6586X GPIO" 1566 depends on MFD_TPS6586X 1567 help 1568 Select this option to enable GPIO driver for the TPS6586X 1569 chip family. 1570 1571config GPIO_TPS65910 1572 bool "TPS65910 GPIO" 1573 depends on MFD_TPS65910 1574 help 1575 Select this option to enable GPIO driver for the TPS65910 1576 chip family. 1577 1578config GPIO_TPS65912 1579 tristate "TI TPS65912 GPIO" 1580 depends on MFD_TPS65912 1581 help 1582 This driver supports TPS65912 GPIO chip. 1583 1584config GPIO_TPS68470 1585 tristate "TPS68470 GPIO" 1586 depends on INTEL_SKL_INT3472 1587 help 1588 Select this option to enable GPIO driver for the TPS68470 1589 chip family. 1590 There are 7 GPIOs and few sensor-related GPIOs supported 1591 by the TPS68470. While the 7 GPIOs can be configured as 1592 input or output as appropriate, the sensor related GPIOs 1593 are "output only" GPIOs. 1594 1595config GPIO_TQMX86 1596 tristate "TQ-Systems TQMx86 GPIO" 1597 depends on MFD_TQMX86 || COMPILE_TEST 1598 depends on HAS_IOPORT_MAP 1599 select GPIOLIB_IRQCHIP 1600 help 1601 This driver supports GPIO on the TQMX86 IO controller. 1602 1603config GPIO_TWL4030 1604 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 1605 depends on TWL4030_CORE 1606 help 1607 Say yes here to access the GPIO signals of various multi-function 1608 power management chips from Texas Instruments. 1609 1610config GPIO_TWL6040 1611 tristate "TWL6040 GPO" 1612 depends on TWL6040_CORE 1613 help 1614 Say yes here to access the GPO signals of twl6040 1615 audio chip from Texas Instruments. 1616 1617config GPIO_WHISKEY_COVE 1618 tristate "GPIO support for Whiskey Cove PMIC" 1619 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC 1620 select GPIOLIB_IRQCHIP 1621 help 1622 Support for GPIO pins on Whiskey Cove PMIC. 1623 1624 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC 1625 inside. 1626 1627 This driver can also be built as a module. If so, the module will be 1628 called gpio-wcove. 1629 1630config GPIO_WM831X 1631 tristate "WM831x GPIOs" 1632 depends on MFD_WM831X 1633 help 1634 Say yes here to access the GPIO signals of WM831x power management 1635 chips from Wolfson Microelectronics. 1636 1637config GPIO_WM8350 1638 tristate "WM8350 GPIOs" 1639 depends on MFD_WM8350 1640 help 1641 Say yes here to access the GPIO signals of WM8350 power management 1642 chips from Wolfson Microelectronics. 1643 1644config GPIO_WM8994 1645 tristate "WM8994 GPIOs" 1646 depends on MFD_WM8994 1647 help 1648 Say yes here to access the GPIO signals of WM8994 audio hub 1649 CODECs from Wolfson Microelectronics. 1650 1651endmenu 1652 1653menu "PCI GPIO expanders" 1654 depends on PCI 1655 1656config GPIO_AMD8111 1657 tristate "AMD 8111 GPIO driver" 1658 depends on X86 || COMPILE_TEST 1659 depends on HAS_IOPORT_MAP 1660 help 1661 The AMD 8111 southbridge contains 32 GPIO pins which can be used. 1662 1663 Note that usually system firmware/ACPI handles GPIO pins on their 1664 own and users might easily break their systems with uncareful usage 1665 of this driver! 1666 1667 If unsure, say N 1668 1669config GPIO_BT8XX 1670 tristate "BT8XX GPIO abuser" 1671 depends on VIDEO_BT848=n 1672 help 1673 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 1674 as a cheap PCI GPIO card. 1675 1676 This chip can be found on Miro, Hauppauge and STB TV-cards. 1677 1678 The card needs to be physically altered for using it as a 1679 GPIO card. For more information on how to build a GPIO card 1680 from a BT8xx TV card, see the documentation file at 1681 Documentation/driver-api/gpio/bt8xxgpio.rst 1682 1683 If unsure, say N. 1684 1685config GPIO_MERRIFIELD 1686 tristate "Intel Merrifield GPIO support" 1687 depends on X86_INTEL_MID 1688 select GPIO_TANGIER 1689 help 1690 Say Y here to support Intel Merrifield GPIO. 1691 1692config GPIO_MLXBF 1693 tristate "Mellanox BlueField SoC GPIO" 1694 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1695 select GPIO_GENERIC 1696 help 1697 Say Y here if you want GPIO support on Mellanox BlueField SoC. 1698 1699config GPIO_MLXBF2 1700 tristate "Mellanox BlueField 2 SoC GPIO" 1701 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1702 select GPIO_GENERIC 1703 select GPIOLIB_IRQCHIP 1704 help 1705 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC. 1706 1707config GPIO_MLXBF3 1708 tristate "Mellanox BlueField 3 SoC GPIO" 1709 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST 1710 select GPIO_GENERIC 1711 select GPIOLIB_IRQCHIP 1712 help 1713 Say Y if you want GPIO support on Mellanox BlueField 3 SoC. 1714 This GPIO controller supports interrupt handling and enables the 1715 manipulation of certain GPIO pins. 1716 This controller should be used in parallel with pinctrl-mlxbf3 to 1717 control the desired GPIOs. 1718 This driver can also be built as a module called mlxbf3-gpio. 1719 1720config GPIO_ML_IOH 1721 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 1722 depends on X86 || COMPILE_TEST 1723 select GENERIC_IRQ_CHIP 1724 help 1725 ML7213 is companion chip for Intel Atom E6xx series. 1726 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output 1727 Hub) which is for IVI (In-Vehicle Infotainment) use. 1728 This driver can access the IOH's GPIO device. 1729 1730config GPIO_PCH 1731 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO" 1732 depends on X86_32 || MIPS || COMPILE_TEST 1733 select GENERIC_IRQ_CHIP 1734 help 1735 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff, 1736 which is an IOH (Input/Output Hub) for x86 embedded processor. 1737 This driver can access PCH GPIO device. 1738 1739 This driver also can be used for LAPIS Semiconductor IOH (Input/ 1740 Output Hub), ML7223 and ML7831. 1741 ML7223 IOH is for MP (Media Phone) use. 1742 ML7831 IOH is for general purpose use. 1743 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1744 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1745 1746config GPIO_PCI_IDIO_16 1747 tristate "ACCES PCI-IDIO-16 GPIO support" 1748 select REGMAP_MMIO 1749 select GPIO_IDIO_16 1750 help 1751 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is 1752 generated when any of the inputs change state (low to high or high to 1753 low). Input filter control is not supported by this driver, and the 1754 input filters are deactivated by this driver. 1755 1756config GPIO_PCIE_IDIO_24 1757 tristate "ACCES PCIe-IDIO-24 GPIO support" 1758 select REGMAP_IRQ 1759 select REGMAP_MMIO 1760 select GPIOLIB_IRQCHIP 1761 select GPIO_REGMAP 1762 help 1763 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24, 1764 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated 1765 when any of the inputs change state (low to high or high to low). 1766 Input filter control is not supported by this driver, and the input 1767 filters are deactivated by this driver. 1768 1769config GPIO_RDC321X 1770 tristate "RDC R-321x GPIO support" 1771 select MFD_CORE 1772 select MFD_RDC321X 1773 help 1774 Support for the RDC R321x SoC GPIOs over southbridge 1775 PCI configuration space. 1776 1777config GPIO_SODAVILLE 1778 bool "Intel Sodaville GPIO support" 1779 depends on X86 && OF 1780 select GPIO_GENERIC 1781 select GENERIC_IRQ_CHIP 1782 help 1783 Say Y here to support Intel Sodaville GPIO. 1784 1785endmenu 1786 1787menu "SPI GPIO expanders" 1788 depends on SPI_MASTER 1789 1790config GPIO_74X164 1791 tristate "74x164 serial-in/parallel-out 8-bits shift register" 1792 depends on OF_GPIO 1793 help 1794 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 1795 shift registers. This driver can be used to provide access 1796 to more GPIO outputs. 1797 1798config GPIO_MAX3191X 1799 tristate "Maxim MAX3191x industrial serializer" 1800 select CRC8 1801 help 1802 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913, 1803 MAX31953 and MAX31963 industrial serializer, a daisy-chainable 1804 chip to make 8 digital 24V inputs available via SPI. Supports 1805 CRC checksums to guard against electromagnetic interference, 1806 as well as undervoltage and overtemperature detection. 1807 1808config GPIO_MAX7301 1809 tristate "Maxim MAX7301 GPIO expander" 1810 select GPIO_MAX730X 1811 help 1812 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1813 1814config GPIO_MC33880 1815 tristate "Freescale MC33880 high-side/low-side switch" 1816 help 1817 SPI driver for Freescale MC33880 high-side/low-side switch. 1818 This provides GPIO interface supporting inputs and outputs. 1819 1820config GPIO_PISOSR 1821 tristate "Generic parallel-in/serial-out shift register" 1822 help 1823 GPIO driver for SPI compatible parallel-in/serial-out shift 1824 registers. These are input only devices. 1825 1826config GPIO_XRA1403 1827 tristate "EXAR XRA1403 16-bit GPIO expander" 1828 select REGMAP_SPI 1829 help 1830 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander. 1831 1832config GPIO_MOXTET 1833 tristate "Turris Mox Moxtet bus GPIO expander" 1834 depends on MOXTET 1835 help 1836 Say yes here if you are building for the Turris Mox router. 1837 This is the driver needed for configuring the GPIOs via the Moxtet 1838 bus. For example the Mox module with SFP cage needs this driver 1839 so that phylink can use corresponding GPIOs. 1840 1841endmenu 1842 1843menu "USB GPIO expanders" 1844 depends on USB 1845 1846config GPIO_VIPERBOARD 1847 tristate "Viperboard GPIO a & b support" 1848 depends on MFD_VIPERBOARD 1849 help 1850 Say yes here to access the GPIO signals of Nano River 1851 Technologies Viperboard. There are two GPIO chips on the 1852 board: gpioa and gpiob. 1853 See viperboard API specification and Nano 1854 River Tech's viperboard.h for detailed meaning 1855 of the module parameters. 1856 1857config GPIO_MPSSE 1858 tristate "FTDI MPSSE GPIO support" 1859 select GPIOLIB_IRQCHIP 1860 help 1861 GPIO driver for FTDI's MPSSE interface. These can do input and 1862 output. Each MPSSE provides 16 IO pins. 1863 1864endmenu 1865 1866menu "Virtual GPIO drivers" 1867 1868config GPIO_AGGREGATOR 1869 tristate "GPIO Aggregator" 1870 help 1871 Say yes here to enable the GPIO Aggregator, which provides a way to 1872 aggregate existing GPIO lines into a new virtual GPIO chip. 1873 This can serve the following purposes: 1874 - Assign permissions for a collection of GPIO lines to a user, 1875 - Export a collection of GPIO lines to a virtual machine, 1876 - Provide a generic driver for a GPIO-operated device in an 1877 industrial control context, to be operated from userspace using 1878 the GPIO chardev interface. 1879 1880config GPIO_LATCH 1881 tristate "GPIO latch driver" 1882 help 1883 Say yes here to enable a driver for GPIO multiplexers based on latches 1884 connected to other GPIOs. 1885 1886config GPIO_MOCKUP 1887 tristate "GPIO Testing Driver (DEPRECATED)" 1888 select IRQ_SIM 1889 help 1890 This module is DEPRECATED. Please consider using gpio-sim instead. 1891 1892 This enables GPIO Testing driver, which provides a way to test GPIO 1893 subsystem through sysfs (or char device) and debugfs. 1894 User could use it through the script in 1895 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in 1896 it. 1897 1898config GPIO_VIRTIO 1899 tristate "VirtIO GPIO support" 1900 depends on VIRTIO 1901 select GPIOLIB_IRQCHIP 1902 help 1903 Say Y here to enable guest support for virtio-based GPIO controllers. 1904 1905 These virtual GPIOs can be routed to real GPIOs or attached to 1906 simulators on the host (like QEMU). 1907 1908config GPIO_SIM 1909 tristate "GPIO Simulator Module" 1910 select IRQ_SIM 1911 select CONFIGFS_FS 1912 help 1913 This enables the GPIO simulator - a configfs-based GPIO testing 1914 driver. 1915 1916endmenu 1917 1918menu "GPIO Debugging utilities" 1919 1920config GPIO_SLOPPY_LOGIC_ANALYZER 1921 tristate "Sloppy GPIO logic analyzer" 1922 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT 1923 help 1924 This option enables support for a sloppy logic analyzer using polled 1925 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with 1926 this driver. The script will make it easier to use and will also 1927 isolate a CPU for the polling task. Note that this is a last resort 1928 analyzer which can be affected by latencies, non-deterministic code 1929 paths, or NMIs. However, for e.g. remote development, it may be useful 1930 to get a first view and aid further debugging. 1931 1932 If this driver is built as a module it will be called 1933 'gpio-sloppy-logic-analyzer'. 1934 1935config GPIO_VIRTUSER 1936 tristate "GPIO Virtual User Testing Module" 1937 select DEBUG_FS 1938 select CONFIGFS_FS 1939 select IRQ_WORK 1940 help 1941 Say Y here to enable the configurable, configfs-based virtual GPIO 1942 consumer testing driver. 1943 1944 This driver is aimed as a helper in spotting any regressions in 1945 hot-unplug handling in GPIOLIB. 1946 1947endmenu 1948 1949endif 1950