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 74 prompt "Character device (/dev/gpiochipN) support" if EXPERT 75 default y 76 help 77 Say Y here to add the character device /dev/gpiochipN interface 78 for GPIOs. The character device allows userspace to control GPIOs 79 using ioctl() operations. 80 81 Only say N if you are sure that the GPIO character device is not 82 required. 83 84 If unsure, say Y. 85 86config GPIO_CDEV_V1 87 bool "Support GPIO ABI Version 1" 88 default y 89 depends on GPIO_CDEV 90 help 91 Say Y here to support version 1 of the GPIO CDEV ABI. 92 93 This ABI version is deprecated. 94 Please use the latest ABI for new developments. 95 96 If unsure, say Y. 97 98config GPIO_GENERIC 99 depends on HAS_IOMEM # Only for IOMEM drivers 100 tristate 101 102config GPIO_REGMAP 103 select REGMAP 104 tristate 105 106# put drivers in the right section, in alphabetical order 107 108# This symbol is selected by both I2C and SPI expanders 109config GPIO_MAX730X 110 tristate 111 112config GPIO_IDIO_16 113 tristate 114 select REGMAP_IRQ 115 select GPIOLIB_IRQCHIP 116 select GPIO_REGMAP 117 help 118 Enables support for the idio-16 library functions. The idio-16 library 119 provides functions to facilitate communication with devices within the 120 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16. 121 122 If built as a module its name will be gpio-idio-16. 123 124menu "Memory mapped GPIO drivers" 125 depends on HAS_IOMEM 126 127config GPIO_74XX_MMIO 128 tristate "GPIO driver for 74xx-ICs with MMIO access" 129 depends on OF_GPIO 130 select GPIO_GENERIC 131 help 132 Say yes here to support GPIO functionality for 74xx-compatible ICs 133 with MMIO access. Compatible models include: 134 1 bit: 741G125 (Input), 741G74 (Output) 135 2 bits: 742G125 (Input), 7474 (Output) 136 4 bits: 74125 (Input), 74175 (Output) 137 6 bits: 74365 (Input), 74174 (Output) 138 8 bits: 74244 (Input), 74273 (Output) 139 16 bits: 741624 (Input), 7416374 (Output) 140 141config GPIO_ALTERA 142 tristate "Altera GPIO" 143 depends on OF_GPIO 144 select GPIOLIB_IRQCHIP 145 select OF_GPIO_MM_GPIOCHIP 146 help 147 Say Y or M here to build support for the Altera PIO device. 148 149 If driver is built as a module it will be called gpio-altera. 150 151config GPIO_AMDPT 152 tristate "AMD Promontory GPIO support" 153 depends on ACPI 154 select GPIO_GENERIC 155 help 156 Driver for GPIO functionality on Promontory IOHub. 157 Requires ACPI ASL code to enumerate as a platform device. 158 159config GPIO_ASPEED 160 tristate "Aspeed GPIO support" 161 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 162 select GPIOLIB_IRQCHIP 163 help 164 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers. 165 166config GPIO_ASPEED_SGPIO 167 bool "Aspeed SGPIO support" 168 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO 169 select GPIO_GENERIC 170 select GPIOLIB_IRQCHIP 171 help 172 Say Y here to support Aspeed AST2500 SGPIO functionality. 173 174config GPIO_ATH79 175 tristate "Atheros AR71XX/AR724X/AR913X GPIO support" 176 default y if ATH79 177 depends on ATH79 || COMPILE_TEST 178 select GPIO_GENERIC 179 select GPIOLIB_IRQCHIP 180 help 181 Select this option to enable GPIO driver for 182 Atheros AR71XX/AR724X/AR913X SoC devices. 183 184config GPIO_RASPBERRYPI_EXP 185 tristate "Raspberry Pi 3 GPIO Expander" 186 default RASPBERRYPI_FIRMWARE 187 depends on OF_GPIO 188 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only 189 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE. 190 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) 191 help 192 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using 193 the firmware mailbox to communicate with VideoCore on BCM283x chips. 194 195config GPIO_BCM_KONA 196 bool "Broadcom Kona GPIO" 197 depends on ARCH_BCM_MOBILE || COMPILE_TEST 198 help 199 Turn on GPIO support for Broadcom "Kona" chips. 200 201config GPIO_BCM_XGS_IPROC 202 tristate "BRCM XGS iProc GPIO support" 203 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) 204 select GPIO_GENERIC 205 select GPIOLIB_IRQCHIP 206 default ARCH_BCM_IPROC 207 help 208 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs. 209 210config GPIO_BRCMSTB 211 tristate "BRCMSTB GPIO support" 212 default y if (ARCH_BRCMSTB || BMIPS_GENERIC) 213 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST) 214 select GPIO_GENERIC 215 select IRQ_DOMAIN 216 help 217 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. 218 219config GPIO_CADENCE 220 tristate "Cadence GPIO support" 221 depends on OF_GPIO 222 select GPIO_GENERIC 223 select GPIOLIB_IRQCHIP 224 help 225 Say yes here to enable support for Cadence GPIO controller. 226 227config GPIO_CLPS711X 228 tristate "CLPS711X GPIO support" 229 depends on ARCH_CLPS711X || COMPILE_TEST 230 select GPIO_GENERIC 231 help 232 Say yes here to support GPIO on CLPS711X SoCs. 233 234config GPIO_DAVINCI 235 tristate "TI Davinci/Keystone GPIO support" 236 default y if ARCH_DAVINCI 237 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3) 238 help 239 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs. 240 241config GPIO_DWAPB 242 tristate "Synopsys DesignWare APB GPIO driver" 243 select GPIO_GENERIC 244 select GPIOLIB_IRQCHIP 245 help 246 Say Y or M here to build support for the Synopsys DesignWare APB 247 GPIO block. 248 249config GPIO_EIC_SPRD 250 tristate "Spreadtrum EIC support" 251 depends on ARCH_SPRD || COMPILE_TEST 252 depends on OF_GPIO 253 select GPIOLIB_IRQCHIP 254 help 255 Say yes here to support Spreadtrum EIC device. 256 257config GPIO_EM 258 tristate "Emma Mobile GPIO" 259 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO 260 help 261 Say yes here to support GPIO on Renesas Emma Mobile SoCs. 262 263config GPIO_EN7523 264 tristate "Airoha GPIO support" 265 depends on ARCH_AIROHA 266 default ARCH_AIROHA 267 select GPIO_GENERIC 268 select GPIOLIB_IRQCHIP 269 help 270 Say Y or M here to support the GPIO controller block on the 271 Airoha EN7523 SoC. It supports two banks of 32 GPIOs. 272 273config GPIO_EP93XX 274 def_bool y 275 depends on ARCH_EP93XX 276 select GPIO_GENERIC 277 select GPIOLIB_IRQCHIP 278 279config GPIO_EXAR 280 tristate "Support for GPIO pins on XR17V352/354/358" 281 depends on SERIAL_8250_EXAR 282 select REGMAP_MMIO 283 help 284 Selecting this option will enable handling of GPIO pins present 285 on Exar XR17V352/354/358 chips. 286 287config GPIO_GE_FPGA 288 bool "GE FPGA based GPIO" 289 depends on GE_FPGA || COMPILE_TEST 290 select GPIO_GENERIC 291 help 292 Support for common GPIO functionality provided on some GE Single Board 293 Computers. 294 295 This driver provides basic support (configure as input or output, read 296 and write pin state) for GPIO implemented in a number of GE single 297 board computers. 298 299config GPIO_FTGPIO010 300 bool "Faraday FTGPIO010 GPIO" 301 depends on OF_GPIO 302 select GPIO_GENERIC 303 select GPIOLIB_IRQCHIP 304 default (ARCH_GEMINI || ARCH_MOXART) 305 help 306 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in 307 Cortina systems Gemini platforms, Moxa ART and others. 308 309config GPIO_GENERIC_PLATFORM 310 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)" 311 select GPIO_GENERIC 312 help 313 Say yes here to support basic platform_device memory-mapped GPIO controllers. 314 315config GPIO_GRGPIO 316 tristate "Aeroflex Gaisler GRGPIO support" 317 depends on OF_GPIO 318 select GPIO_GENERIC 319 select IRQ_DOMAIN 320 help 321 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB 322 VHDL IP core library. 323 324config GPIO_HISI 325 tristate "HiSilicon GPIO controller driver" 326 depends on ARM64 || COMPILE_TEST 327 select GPIO_GENERIC 328 select GPIOLIB_IRQCHIP 329 help 330 Say Y or M here to build support for the HiSilicon GPIO controller 331 driver GPIO block. 332 This GPIO controller supports double-edge interrupt and multi-core 333 concurrent access. 334 335config GPIO_HLWD 336 tristate "Nintendo Wii (Hollywood) GPIO" 337 depends on OF_GPIO 338 select GPIO_GENERIC 339 select GPIOLIB_IRQCHIP 340 help 341 Select this to support the GPIO controller of the Nintendo Wii. 342 343 If unsure, say N. 344 345config GPIO_ICH 346 tristate "Intel ICH GPIO" 347 depends on X86 348 depends on LPC_ICH 349 help 350 Say yes here to support the GPIO functionality of a number of Intel 351 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8 352 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g. 353 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake). 354 355 If unsure, say N. 356 357config GPIO_IMX_SCU 358 def_bool y 359 depends on IMX_SCU 360 361config GPIO_IXP4XX 362 bool "Intel IXP4xx GPIO" 363 depends on ARCH_IXP4XX 364 depends on OF 365 select GPIO_GENERIC 366 select GPIOLIB_IRQCHIP 367 select IRQ_DOMAIN_HIERARCHY 368 help 369 Say yes here to support the GPIO functionality of a number of Intel 370 IXP4xx series of chips. 371 372 If unsure, say N. 373 374config GPIO_LOGICVC 375 tristate "Xylon LogiCVC GPIO support" 376 depends on MFD_SYSCON && OF 377 help 378 Say yes here to support GPIO functionality of the Xylon LogiCVC 379 programmable logic block. 380 381config GPIO_LOONGSON 382 bool "Loongson-2/3 GPIO support" 383 depends on CPU_LOONGSON2EF || CPU_LOONGSON64 384 help 385 Driver for GPIO functionality on Loongson-2F/3A/3B processors. 386 387config GPIO_LOONGSON_64BIT 388 tristate "Loongson 64 bit GPIO support" 389 depends on LOONGARCH || COMPILE_TEST 390 depends on OF_GPIO 391 select GPIO_GENERIC 392 help 393 Say yes here to support the GPIO functionality of a number of 394 Loongson series of chips. The Loongson GPIO controller supports 395 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and 396 the remaining 56 are reused with other functions, with edge or 397 level triggered interrupts. 398 399config GPIO_LPC18XX 400 tristate "NXP LPC18XX/43XX GPIO support" 401 default y if ARCH_LPC18XX 402 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST) 403 select IRQ_DOMAIN_HIERARCHY 404 help 405 Select this option to enable GPIO driver for 406 NXP LPC18XX/43XX devices. 407 408config GPIO_LPC32XX 409 tristate "NXP LPC32XX GPIO support" 410 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST) 411 help 412 Select this option to enable GPIO driver for 413 NXP LPC32XX devices. 414 415config GPIO_MB86S7X 416 tristate "GPIO support for Fujitsu MB86S7x Platforms" 417 help 418 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs. 419 420config GPIO_MENZ127 421 tristate "MEN 16Z127 GPIO support" 422 depends on MCB 423 select GPIO_GENERIC 424 help 425 Say yes here to support the MEN 16Z127 GPIO Controller. 426 427config GPIO_MM_LANTIQ 428 bool "Lantiq Memory mapped GPIOs" 429 depends on LANTIQ && SOC_XWAY 430 select OF_GPIO_MM_GPIOCHIP 431 help 432 This enables support for memory mapped GPIOs on the External Bus Unit 433 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are 434 created by attaching a 16-bit latch to the bus. 435 436config GPIO_MPC5200 437 def_bool y 438 depends on PPC_MPC52xx 439 select OF_GPIO_MM_GPIOCHIP 440 441config GPIO_MPC8XXX 442 bool "MPC512x/MPC8xxx/QorIQ GPIO support" 443 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \ 444 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \ 445 COMPILE_TEST 446 select GPIO_GENERIC 447 select IRQ_DOMAIN 448 help 449 Say Y here if you're going to use hardware that connects to the 450 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs. 451 452config GPIO_MT7621 453 bool "Mediatek MT7621 GPIO Support" 454 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST 455 depends on OF_GPIO 456 select GPIO_GENERIC 457 select GPIOLIB_IRQCHIP 458 help 459 Say yes here to support the Mediatek MT7621 SoC GPIO device. 460 461config GPIO_MVEBU 462 def_bool y 463 depends on PLAT_ORION || ARCH_MVEBU 464 depends on OF_GPIO 465 select GENERIC_IRQ_CHIP 466 select REGMAP_MMIO 467 468config GPIO_MXC 469 tristate "i.MX GPIO support" 470 depends on ARCH_MXC || COMPILE_TEST 471 select GPIO_GENERIC 472 select GENERIC_IRQ_CHIP 473 474config GPIO_MXS 475 bool "Freescale MXS GPIO support" if COMPILE_TEST 476 depends on ARCH_MXS || COMPILE_TEST 477 default y if ARCH_MXS 478 select GPIO_GENERIC 479 select GENERIC_IRQ_CHIP 480 481config GPIO_NOMADIK 482 bool "Nomadik GPIO driver" 483 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST 484 select GPIOLIB_IRQCHIP 485 help 486 Say yes here to support the Nomadik SoC GPIO block. This block is also 487 used by the Mobileye EyeQ5 SoC. 488 489 It handles up to 32 GPIOs per bank, that can all be interrupt sources. 490 It is deeply interconnected with the associated pinctrl driver as GPIO 491 registers handle muxing ("alternate functions") as well. 492 493config GPIO_NPCM_SGPIO 494 bool "Nuvoton SGPIO support" 495 depends on ARCH_NPCM || COMPILE_TEST 496 select GPIOLIB_IRQCHIP 497 help 498 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality. 499 500config GPIO_OCTEON 501 tristate "Cavium OCTEON GPIO" 502 depends on CAVIUM_OCTEON_SOC 503 default y 504 help 505 Say yes here to support the on-chip GPIO lines on the OCTEON 506 family of SOCs. 507 508config GPIO_OMAP 509 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST 510 default y if ARCH_OMAP 511 depends on ARM 512 select GENERIC_IRQ_CHIP 513 select GPIOLIB_IRQCHIP 514 help 515 Say yes here to enable GPIO support for TI OMAP SoCs. 516 517config GPIO_PL061 518 tristate "PrimeCell PL061 GPIO support" 519 depends on ARM_AMBA 520 select IRQ_DOMAIN 521 select GPIOLIB_IRQCHIP 522 help 523 Say yes here to support the PrimeCell PL061 GPIO device. 524 525config GPIO_PXA 526 bool "PXA GPIO support" 527 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST 528 help 529 Say yes here to support the PXA GPIO device. 530 531config GPIO_RCAR 532 tristate "Renesas R-Car and RZ/G GPIO support" 533 depends on ARCH_RENESAS || COMPILE_TEST 534 select GPIOLIB_IRQCHIP 535 help 536 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs. 537 538config GPIO_RDA 539 bool "RDA Micro GPIO controller support" 540 depends on ARCH_RDA || COMPILE_TEST 541 depends on OF_GPIO 542 select GPIO_GENERIC 543 select GPIOLIB_IRQCHIP 544 help 545 Say Y here to support RDA Micro GPIO controller. 546 547config GPIO_REALTEK_OTTO 548 tristate "Realtek Otto GPIO support" 549 depends on MACH_REALTEK_RTL 550 default MACH_REALTEK_RTL 551 select GPIO_GENERIC 552 select GPIOLIB_IRQCHIP 553 help 554 The GPIO controller on the Otto MIPS platform supports up to two 555 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs 556 are grouped in four 8-bit wide ports. 557 558 When built as a module, the module will be called realtek_otto_gpio. 559 560config GPIO_REG 561 bool 562 help 563 A 32-bit single register GPIO fixed in/out implementation. This 564 can be used to represent any register as a set of GPIO signals. 565 566config GPIO_ROCKCHIP 567 tristate "Rockchip GPIO support" 568 depends on ARCH_ROCKCHIP || COMPILE_TEST 569 select GENERIC_IRQ_CHIP 570 select GPIOLIB_IRQCHIP 571 default ARCH_ROCKCHIP 572 help 573 Say yes here to support GPIO on Rockchip SoCs. 574 575config GPIO_RTD 576 tristate "Realtek DHC GPIO support" 577 depends on ARCH_REALTEK 578 default y 579 select GPIOLIB_IRQCHIP 580 help 581 This option enables support for GPIOs found on Realtek DHC(Digital 582 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319, 583 RTD1319D, RTD1395, RTD1619 and RTD1619B. 584 585 Say yes here to support GPIO functionality and GPIO interrupt on 586 Realtek DHC SoCs. 587 588config GPIO_SAMA5D2_PIOBU 589 tristate "SAMA5D2 PIOBU GPIO support" 590 depends on MFD_SYSCON 591 depends on OF_GPIO 592 depends on ARCH_AT91 || COMPILE_TEST 593 select GPIO_SYSCON 594 help 595 Say yes here to use the PIOBU pins as GPIOs. 596 597 PIOBU pins on the SAMA5D2 can be used as GPIOs. 598 The difference from regular GPIOs is that they 599 maintain their value during backup/self-refresh. 600 601config GPIO_SIFIVE 602 tristate "SiFive GPIO support" 603 depends on OF_GPIO 604 select IRQ_DOMAIN_HIERARCHY 605 select GPIO_GENERIC 606 select GPIOLIB_IRQCHIP 607 select REGMAP_MMIO 608 help 609 Say yes here to support the GPIO device on SiFive SoCs. 610 611config GPIO_SIOX 612 tristate "SIOX GPIO support" 613 depends on SIOX 614 select GPIOLIB_IRQCHIP 615 help 616 Say yes here to support SIOX I/O devices. These are units connected 617 via a SIOX bus and have a number of fixed-direction I/O lines. 618 619config GPIO_SNPS_CREG 620 bool "Synopsys GPIO via CREG (Control REGisters) driver" 621 depends on ARC || COMPILE_TEST 622 depends on OF_GPIO 623 help 624 This driver supports GPIOs via CREG on various Synopsys SoCs. 625 This is a single-register MMIO GPIO driver for complex cases 626 where only several fields in register belong to GPIO lines and 627 each GPIO line owns a field with different length and on/off value. 628 629config GPIO_SPEAR_SPICS 630 bool "ST SPEAr13xx SPI Chip Select as GPIO support" 631 depends on PLAT_SPEAR 632 select GENERIC_IRQ_CHIP 633 help 634 Say yes here to support ST SPEAr SPI Chip Select as GPIO device. 635 636config GPIO_SPRD 637 tristate "Spreadtrum GPIO support" 638 depends on ARCH_SPRD || COMPILE_TEST 639 depends on OF_GPIO 640 select GPIOLIB_IRQCHIP 641 help 642 Say yes here to support Spreadtrum GPIO device. 643 644config GPIO_STP_XWAY 645 bool "XWAY STP GPIOs" 646 depends on SOC_XWAY || COMPILE_TEST 647 depends on OF_GPIO 648 help 649 This enables support for the Serial To Parallel (STP) unit found on 650 XWAY SoC. The STP allows the SoC to drive a shift registers cascade, 651 that can be up to 24 bits. This peripheral is aimed at driving LEDs. 652 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and 653 phy status. 654 655config GPIO_SYSCON 656 tristate "GPIO based on SYSCON" 657 depends on MFD_SYSCON && OF 658 help 659 Say yes here to support GPIO functionality though SYSCON driver. 660 661config GPIO_TANGIER 662 tristate 663 select GPIOLIB_IRQCHIP 664 help 665 GPIO support for Intel Tangier and compatible platforms. 666 Currently supported: 667 - Elkhart Lake 668 - Merrifield 669 670 If built as a module its name will be gpio-tangier. 671 672config GPIO_TB10X 673 bool 674 select GPIO_GENERIC 675 select GENERIC_IRQ_CHIP 676 select OF_GPIO 677 678config GPIO_TEGRA 679 tristate "NVIDIA Tegra GPIO support" 680 default ARCH_TEGRA 681 depends on ARCH_TEGRA || COMPILE_TEST 682 depends on OF_GPIO 683 select GPIOLIB_IRQCHIP 684 select IRQ_DOMAIN_HIERARCHY 685 help 686 Say yes here to support GPIO pins on NVIDIA Tegra SoCs. 687 688config GPIO_TEGRA186 689 tristate "NVIDIA Tegra186 GPIO support" 690 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC 691 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST 692 depends on OF_GPIO 693 select GPIOLIB_IRQCHIP 694 select IRQ_DOMAIN_HIERARCHY 695 help 696 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs. 697 698config GPIO_TS4800 699 tristate "TS-4800 DIO blocks and compatibles" 700 depends on OF_GPIO 701 depends on SOC_IMX51 || COMPILE_TEST 702 select GPIO_GENERIC 703 help 704 This driver support TS-4800 FPGA GPIO controllers. 705 706config GPIO_THUNDERX 707 tristate "Cavium ThunderX/OCTEON-TX GPIO" 708 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST) 709 depends on PCI_MSI 710 select GPIOLIB_IRQCHIP 711 select IRQ_DOMAIN_HIERARCHY 712 select IRQ_FASTEOI_HIERARCHY_HANDLERS 713 help 714 Say yes here to support the on-chip GPIO lines on the ThunderX 715 and OCTEON-TX families of SoCs. 716 717config GPIO_UNIPHIER 718 tristate "UniPhier GPIO support" 719 depends on ARCH_UNIPHIER || COMPILE_TEST 720 depends on OF_GPIO 721 select IRQ_DOMAIN_HIERARCHY 722 help 723 Say yes here to support UniPhier GPIOs. 724 725config GPIO_VF610 726 bool "VF610 GPIO support" 727 default y if SOC_VF610 728 depends on ARCH_MXC || COMPILE_TEST 729 select GPIOLIB_IRQCHIP 730 help 731 Say yes here to support i.MX or Vybrid vf610 GPIOs. 732 733config GPIO_VISCONTI 734 tristate "Toshiba Visconti GPIO support" 735 depends on ARCH_VISCONTI || COMPILE_TEST 736 depends on OF_GPIO 737 select GPIOLIB_IRQCHIP 738 select GPIO_GENERIC 739 select IRQ_DOMAIN_HIERARCHY 740 help 741 Say yes here to support GPIO on Tohisba Visconti. 742 743config GPIO_WCD934X 744 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver" 745 depends on MFD_WCD934X && OF_GPIO 746 help 747 This driver is to support GPIO block found on the Qualcomm Technologies 748 Inc WCD9340/WCD9341 Audio Codec. 749 750config GPIO_XGENE 751 bool "APM X-Gene GPIO controller support" 752 depends on ARM64 && OF_GPIO 753 help 754 This driver is to support the GPIO block within the APM X-Gene SoC 755 platform's generic flash controller. The GPIO pins are muxed with 756 the generic flash controller's address and data pins. Say yes 757 here to enable the GFC GPIO functionality. 758 759config GPIO_XGENE_SB 760 tristate "APM X-Gene GPIO standby controller support" 761 depends on (ARCH_XGENE || COMPILE_TEST) 762 select GPIO_GENERIC 763 select GPIOLIB_IRQCHIP 764 select IRQ_DOMAIN_HIERARCHY 765 help 766 This driver supports the GPIO block within the APM X-Gene 767 Standby Domain. Say yes here to enable the GPIO functionality. 768 769config GPIO_XILINX 770 tristate "Xilinx GPIO support" 771 select GPIOLIB_IRQCHIP 772 depends on OF_GPIO 773 help 774 Say yes here to support the Xilinx FPGA GPIO device. 775 776config GPIO_XLP 777 tristate "Cavium ThunderX2 GPIO support" 778 depends on ARCH_THUNDER2 || COMPILE_TEST 779 select GPIOLIB_IRQCHIP 780 help 781 This driver provides support for GPIO interface on Cavium's ThunderX2 782 CN99XX SoCs (Originally from Netlogic XLP). 783 784 If unsure, say N. 785 786config GPIO_XTENSA 787 bool "Xtensa GPIO32 support" 788 depends on XTENSA 789 depends on HAVE_XTENSA_GPIO32 790 depends on !SMP 791 help 792 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input) 793 and EXPSTATE (output) ports. 794 795config GPIO_ZEVIO 796 bool "LSI ZEVIO SoC memory mapped GPIOs" 797 depends on ARM 798 help 799 Say yes here to support the GPIO controller in LSI ZEVIO SoCs. 800 801config GPIO_ZYNQ 802 tristate "Xilinx Zynq GPIO support" 803 depends on ARCH_ZYNQ || ARCH_ZYNQMP 804 select GPIOLIB_IRQCHIP 805 help 806 Say yes here to support Xilinx Zynq GPIO controller. 807 808config GPIO_ZYNQMP_MODEPIN 809 tristate "ZynqMP ps-mode pin GPIO configuration driver" 810 depends on ZYNQMP_FIRMWARE 811 default ZYNQMP_FIRMWARE 812 help 813 Say yes here to support the ZynqMP ps-mode pin GPIO configuration 814 driver. 815 816 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE 817 is 4-bits boot mode pins. It sets and gets the status of 818 the ps-mode pin. Every pin can be configured as input/output. 819 820config GPIO_LOONGSON1 821 tristate "Loongson1 GPIO support" 822 depends on MACH_LOONGSON32 823 select GPIO_GENERIC 824 help 825 Say Y or M here to support GPIO on Loongson1 SoCs. 826 827config GPIO_AMD_FCH 828 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" 829 help 830 This option enables driver for GPIO on AMD's Fusion Controller Hub, 831 as found on G-series SOCs (e.g. GX-412TC). 832 833 Note: This driver doesn't register itself automatically, as it 834 needs to be provided with platform-specific configuration. 835 (See e.g. CONFIG_PCENGINES_APU2.) 836 837config GPIO_MSC313 838 bool "MStar MSC313 GPIO support" 839 depends on ARCH_MSTARV7 840 default ARCH_MSTARV7 841 select GPIOLIB_IRQCHIP 842 select IRQ_DOMAIN_HIERARCHY 843 help 844 Say Y here to support the main GPIO block on MStar/SigmaStar 845 ARMv7-based SoCs. 846 847config GPIO_IDT3243X 848 tristate "IDT 79RC3243X GPIO support" 849 depends on MIKROTIK_RB532 || COMPILE_TEST 850 select GPIO_GENERIC 851 select GPIOLIB_IRQCHIP 852 help 853 Select this option to enable GPIO driver for 854 IDT 79RC3243X-based devices like Mikrotik RB532. 855 856 To compile this driver as a module, choose M here: the module will 857 be called gpio-idt3243x. 858 859endmenu 860 861menu "Port-mapped I/O GPIO drivers" 862 depends on X86 && HAS_IOPORT # I/O space access 863 864config GPIO_VX855 865 tristate "VIA VX855/VX875 GPIO" 866 depends on PCI 867 select MFD_CORE 868 select MFD_VX855 869 help 870 Support access to the VX855/VX875 GPIO lines through the GPIO library. 871 872 This driver provides common support for accessing the device. 873 Additional drivers must be enabled in order to use the 874 functionality of the device. 875 876config GPIO_I8255 877 tristate 878 select GPIO_REGMAP 879 help 880 Enables support for the i8255 interface library functions. The i8255 881 interface library provides functions to facilitate communication with 882 interfaces compatible with the venerable Intel 8255 Programmable 883 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released 884 in the early 1970s but compatible interfaces are nowadays typically 885 found embedded in larger VLSI processing chips and FPGA components. 886 887 If built as a module its name will be gpio-i8255. 888 889config GPIO_104_DIO_48E 890 tristate "ACCES 104-DIO-48E GPIO support" 891 depends on PC104 892 select ISA_BUS_API 893 select REGMAP_MMIO 894 select REGMAP_IRQ 895 select GPIOLIB_IRQCHIP 896 select GPIO_I8255 897 select I8254 898 help 899 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E, 900 104-DIO-24E). The base port addresses for the devices may be 901 configured via the base module parameter. The interrupt line numbers 902 for the devices may be configured via the irq module parameter. 903 904config GPIO_104_IDIO_16 905 tristate "ACCES 104-IDIO-16 GPIO support" 906 depends on PC104 907 select ISA_BUS_API 908 select REGMAP_MMIO 909 select GPIO_IDIO_16 910 help 911 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16, 912 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The 913 base port addresses for the devices may be configured via the base 914 module parameter. The interrupt line numbers for the devices may be 915 configured via the irq module parameter. 916 917config GPIO_104_IDI_48 918 tristate "ACCES 104-IDI-48 GPIO support" 919 depends on PC104 920 select ISA_BUS_API 921 select REGMAP_MMIO 922 select REGMAP_IRQ 923 select GPIOLIB_IRQCHIP 924 select GPIO_REGMAP 925 help 926 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A, 927 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for 928 the devices may be configured via the base module parameter. The 929 interrupt line numbers for the devices may be configured via the irq 930 module parameter. 931 932config GPIO_F7188X 933 tristate "Fintek and Nuvoton Super-I/O GPIO support" 934 help 935 This option enables support for GPIOs found on Fintek Super-I/O 936 chips F71869, F71869A, F71882FG, F71889F and F81866. 937 As well as Nuvoton Super-I/O chip NCT6126D. 938 939 To compile this driver as a module, choose M here: the module will 940 be called f7188x-gpio. 941 942config GPIO_GPIO_MM 943 tristate "Diamond Systems GPIO-MM GPIO support" 944 depends on PC104 945 select ISA_BUS_API 946 select REGMAP_MMIO 947 select GPIO_I8255 948 help 949 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12. 950 951 The Diamond Systems GPIO-MM device features 48 lines of digital I/O 952 via the emulation of dual 82C55A PPI chips. This driver provides GPIO 953 support for these 48 channels of digital I/O. 954 955 The base port addresses for the devices may be configured via the base 956 array module parameter. 957 958config GPIO_IT87 959 tristate "IT87xx GPIO support" 960 help 961 Say yes here to support GPIO functionality of IT87xx Super I/O chips. 962 963 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and 964 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as 965 well. 966 967 To compile this driver as a module, choose M here: the module will 968 be called gpio_it87. 969 970config GPIO_SCH 971 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO" 972 depends on (X86 || COMPILE_TEST) && ACPI 973 depends on LPC_SCH 974 select GPIOLIB_IRQCHIP 975 help 976 Say yes here to support GPIO interface on Intel Poulsbo SCH, 977 Intel Tunnel Creek processor, Intel Centerton processor or 978 Intel Quark X1000 SoC. 979 980 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are 981 powered by the core power rail and are turned off during sleep 982 modes (S3 and higher). The remaining four GPIOs are powered by 983 the Intel SCH suspend power supply. These GPIOs remain 984 active during S3. The suspend-powered GPIOs can be used to wake the 985 system from the Suspend-to-RAM state. 986 987 The Intel Tunnel Creek processor has 5 GPIOs powered by the 988 core power rail and 9 from suspend power supply. 989 990 The Intel Centerton processor has a total of 30 GPIO pins. 991 Twenty-one are powered by the core power rail and 9 from the 992 suspend power supply. 993 994 The Intel Quark X1000 SoC has 2 GPIOs powered by the core 995 power well and 6 from the suspend power well. 996 997config GPIO_SCH311X 998 tristate "SMSC SCH311x SuperI/O GPIO" 999 help 1000 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and 1001 SCH3116 "Super I/O" chipsets. 1002 1003 To compile this driver as a module, choose M here: the module will 1004 be called gpio-sch311x. 1005 1006config GPIO_TS5500 1007 tristate "TS-5500 DIO blocks and compatibles" 1008 depends on TS5500 || COMPILE_TEST 1009 help 1010 This driver supports Digital I/O exposed by pin blocks found on some 1011 Technologic Systems platforms. It includes, but is not limited to, 3 1012 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 1013 LCD port. 1014 1015config GPIO_WINBOND 1016 tristate "Winbond Super I/O GPIO support" 1017 select ISA_BUS_API 1018 help 1019 This option enables support for GPIOs found on Winbond Super I/O 1020 chips. 1021 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is 1022 supported. 1023 1024 You will need to provide a module parameter "gpios", or a 1025 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO 1026 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.). 1027 1028 To compile this driver as a module, choose M here: the module will 1029 be called gpio-winbond. 1030 1031config GPIO_WS16C48 1032 tristate "WinSystems WS16C48 GPIO support" 1033 select ISA_BUS_API 1034 select REGMAP_IRQ 1035 select REGMAP_MMIO 1036 select GPIOLIB_IRQCHIP 1037 select GPIO_REGMAP 1038 help 1039 Enables GPIO support for the WinSystems WS16C48. The base port 1040 addresses for the devices may be configured via the base module 1041 parameter. The interrupt line numbers for the devices may be 1042 configured via the irq module parameter. 1043 1044endmenu 1045 1046menu "I2C GPIO expanders" 1047 depends on I2C 1048 1049config GPIO_ADNP 1050 tristate "Avionic Design N-bit GPIO expander" 1051 depends on OF_GPIO 1052 select GPIOLIB_IRQCHIP 1053 help 1054 This option enables support for N GPIOs found on Avionic Design 1055 I2C GPIO expanders. The register space will be extended by powers 1056 of two, so the controller will need to accommodate for that. For 1057 example: if a controller provides 48 pins, 6 registers will be 1058 enough to represent all pins, but the driver will assume a 1059 register layout for 64 pins (8 registers). 1060 1061config GPIO_FXL6408 1062 tristate "FXL6408 I2C GPIO expander" 1063 select GPIO_REGMAP 1064 select REGMAP_I2C 1065 help 1066 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander. 1067 1068 To compile this driver as a module, choose M here: the module will 1069 be called gpio-fxl6408. 1070 1071config GPIO_DS4520 1072 tristate "DS4520 I2C GPIO expander" 1073 select REGMAP_I2C 1074 select GPIO_REGMAP 1075 help 1076 GPIO driver for ADI DS4520 I2C-based GPIO expander. 1077 Say yes here to enable the GPIO driver for the ADI DS4520 chip. 1078 1079 To compile this driver as a module, choose M here: the module will 1080 be called gpio-ds4520. 1081 1082config GPIO_GW_PLD 1083 tristate "Gateworks PLD GPIO Expander" 1084 depends on OF_GPIO 1085 help 1086 Say yes here to provide access to the Gateworks I2C PLD GPIO 1087 Expander. This is used at least on the Cambria GW2358-4. 1088 1089config GPIO_MAX7300 1090 tristate "Maxim MAX7300 GPIO expander" 1091 select GPIO_MAX730X 1092 help 1093 GPIO driver for Maxim MAX7300 I2C-based GPIO expander. 1094 1095config GPIO_MAX732X 1096 tristate "MAX7319, MAX7320-7327 I2C Port Expanders" 1097 help 1098 Say yes here to support the MAX7319, MAX7320-7327 series of I2C 1099 Port Expanders. Each IO port on these chips has a fixed role of 1100 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain 1101 Input and Output (designed by 'P'). The combinations are listed 1102 below: 1103 1104 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), 1105 max7322 (4I4O), max7323 (4P4O) 1106 1107 16 bits: max7324 (8I8O), max7325 (8P8O), 1108 max7326 (4I12O), max7327 (4P12O) 1109 1110 Board setup code must specify the model to use, and the start 1111 number for these GPIOs. 1112 1113config GPIO_MAX732X_IRQ 1114 bool "Interrupt controller support for MAX732x" 1115 depends on GPIO_MAX732X=y 1116 select GPIOLIB_IRQCHIP 1117 help 1118 Say yes here to enable the max732x to be used as an interrupt 1119 controller. It requires the driver to be built in the kernel. 1120 1121config GPIO_PCA953X 1122 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 1123 select REGMAP_I2C 1124 help 1125 Say yes here to provide access to several register-oriented 1126 SMBus I/O expanders, made mostly by NXP or TI. Compatible 1127 models include: 1128 1129 4 bits: pca9536, pca9537 1130 1131 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 1132 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202 1133 1134 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 1135 tca6416 1136 1137 24 bits: tca6424 1138 1139 40 bits: pca9505, pca9698 1140 1141config GPIO_PCA953X_IRQ 1142 bool "Interrupt controller support for PCA953x" 1143 depends on GPIO_PCA953X 1144 select GPIOLIB_IRQCHIP 1145 help 1146 Say yes here to enable the pca953x to be used as an interrupt 1147 controller. 1148 1149config GPIO_PCA9570 1150 tristate "PCA9570 4-Bit I2C GPO expander" 1151 help 1152 Say yes here to enable the GPO driver for the NXP PCA9570 chip. 1153 1154 To compile this driver as a module, choose M here: the module will 1155 be called gpio-pca9570. 1156 1157config GPIO_PCF857X 1158 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders" 1159 select GPIOLIB_IRQCHIP 1160 select IRQ_DOMAIN 1161 help 1162 Say yes here to provide access to most "quasi-bidirectional" I2C 1163 GPIO expanders used for additional digital outputs or inputs. 1164 Most of these parts are from NXP, though TI is a second source for 1165 some of them. Compatible models include: 1166 1167 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, 1168 pca9670, pca9672, pca9674, pca9674a, 1169 max7328, max7329 1170 1171 16 bits: pcf8575, pcf8575c, pca8575, 1172 pca9671, pca9673, pca9675 1173 1174 Your board setup code will need to declare the expanders in 1175 use, and assign numbers to the GPIOs they expose. Those GPIOs 1176 can then be used from drivers and other kernel code, just like 1177 other GPIOs, but only accessible from task contexts. 1178 1179 This driver provides an in-kernel interface to those GPIOs using 1180 platform-neutral GPIO calls. 1181 1182config GPIO_TPIC2810 1183 tristate "TPIC2810 8-Bit I2C GPO expander" 1184 help 1185 Say yes here to enable the GPO driver for the TI TPIC2810 chip. 1186 1187 To compile this driver as a module, choose M here: the module will 1188 be called gpio-tpic2810. 1189 1190config GPIO_TS4900 1191 tristate "Technologic Systems FPGA I2C GPIO" 1192 depends on SOC_IMX6 || COMPILE_TEST 1193 select REGMAP_I2C 1194 help 1195 Say yes here to enabled the GPIO driver for Technologic's FPGA core. 1196 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990. 1197 1198endmenu 1199 1200menu "MFD GPIO expanders" 1201 1202config GPIO_ADP5520 1203 tristate "GPIO Support for ADP5520 PMIC" 1204 depends on PMIC_ADP5520 1205 help 1206 This option enables support for on-chip GPIO found 1207 on Analog Devices ADP5520 PMICs. 1208 1209config GPIO_ALTERA_A10SR 1210 tristate "Altera Arria10 System Resource GPIO" 1211 depends on MFD_ALTERA_A10SR 1212 help 1213 Driver for Arria10 Development Kit GPIO expansion which 1214 includes reads of pushbuttons and DIP switches as well 1215 as writes to LEDs. 1216 1217config GPIO_ARIZONA 1218 tristate "Wolfson Microelectronics Arizona class devices" 1219 depends on MFD_ARIZONA 1220 help 1221 Support for GPIOs on Wolfson Arizona class devices. 1222 1223config GPIO_BD71815 1224 tristate "ROHM BD71815 PMIC GPIO support" 1225 depends on MFD_ROHM_BD71828 1226 help 1227 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs 1228 available on the ROHM PMIC. 1229 1230 This driver can also be built as a module. If so, the module 1231 will be called gpio-bd71815. 1232 1233config GPIO_BD71828 1234 tristate "ROHM BD71828 GPIO support" 1235 depends on MFD_ROHM_BD71828 1236 help 1237 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs 1238 available on the ROHM PMIC in total. The GPIOs are limited to 1239 outputs only and pins must be configured to GPIO outputs by 1240 OTP. Enable this only if you want to use these pins as outputs. 1241 1242 This driver can also be built as a module. If so, the module 1243 will be called gpio-bd71828. 1244 1245config GPIO_BD9571MWV 1246 tristate "ROHM BD9571 GPIO support" 1247 depends on MFD_BD9571MWV 1248 help 1249 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs 1250 available on the ROHM PMIC in total, both of which can also 1251 generate interrupts. 1252 1253 This driver can also be built as a module. If so, the module 1254 will be called gpio-bd9571mwv. 1255 1256config GPIO_CROS_EC 1257 tristate "ChromeOS EC GPIO support" 1258 depends on CROS_EC 1259 help 1260 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs 1261 cannot be set unless the system is unlocked. 1262 1263 This driver can also be built as a module. If so, the module 1264 will be called gpio-cros-ec. 1265 1266config GPIO_CRYSTAL_COVE 1267 tristate "GPIO support for Crystal Cove PMIC" 1268 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC 1269 select GPIOLIB_IRQCHIP 1270 help 1271 Support for GPIO pins on Crystal Cove PMIC. 1272 1273 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC 1274 inside. 1275 1276 This driver can also be built as a module. If so, the module will be 1277 called gpio-crystalcove. 1278 1279config GPIO_CS5535 1280 tristate "AMD CS5535/CS5536 GPIO support" 1281 depends on X86 || MIPS || COMPILE_TEST 1282 depends on MFD_CS5535 1283 help 1284 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that 1285 can be used for quite a number of things. The CS5535/6 is found on 1286 AMD Geode and Lemote Yeeloong devices. 1287 1288 If unsure, say N. 1289 1290config GPIO_DA9052 1291 tristate "Dialog DA9052 GPIO" 1292 depends on PMIC_DA9052 1293 help 1294 Say yes here to enable the GPIO driver for the DA9052 chip. 1295 1296config GPIO_DA9055 1297 tristate "Dialog Semiconductor DA9055 GPIO" 1298 depends on MFD_DA9055 1299 help 1300 Say yes here to enable the GPIO driver for the DA9055 chip. 1301 1302 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be 1303 be controlled by this driver. 1304 1305 If driver is built as a module it will be called gpio-da9055. 1306 1307config GPIO_DLN2 1308 tristate "Diolan DLN2 GPIO support" 1309 depends on MFD_DLN2 1310 select GPIOLIB_IRQCHIP 1311 1312 help 1313 Select this option to enable GPIO driver for the Diolan DLN2 1314 board. 1315 1316 This driver can also be built as a module. If so, the module 1317 will be called gpio-dln2. 1318 1319config HTC_EGPIO 1320 bool "HTC EGPIO support" 1321 depends on ARM 1322 help 1323 This driver supports the CPLD egpio chip present on 1324 several HTC phones. It provides basic support for input 1325 pins, output pins, and IRQs. 1326 1327config GPIO_ELKHARTLAKE 1328 tristate "Intel Elkhart Lake PSE GPIO support" 1329 depends on X86 || COMPILE_TEST 1330 select GPIO_TANGIER 1331 help 1332 Select this option to enable GPIO support for Intel Elkhart Lake 1333 PSE GPIO IP. 1334 1335 To compile this driver as a module, choose M here: the module will 1336 be called gpio-elkhartlake. 1337 1338config GPIO_JANZ_TTL 1339 tristate "Janz VMOD-TTL Digital IO Module" 1340 depends on MFD_JANZ_CMODIO 1341 help 1342 This enables support for the Janz VMOD-TTL Digital IO module. 1343 This driver provides support for driving the pins in output 1344 mode only. Input mode is not supported. 1345 1346config GPIO_KEMPLD 1347 tristate "Kontron ETX / COMexpress GPIO" 1348 depends on MFD_KEMPLD 1349 help 1350 This enables support for the PLD GPIO interface on some Kontron ETX 1351 and COMexpress (ETXexpress) modules. 1352 1353 This driver can also be built as a module. If so, the module will be 1354 called gpio-kempld. 1355 1356config GPIO_LJCA 1357 tristate "INTEL La Jolla Cove Adapter GPIO support" 1358 depends on USB_LJCA 1359 select GPIOLIB_IRQCHIP 1360 default USB_LJCA 1361 help 1362 Select this option to enable GPIO driver for the INTEL 1363 La Jolla Cove Adapter (LJCA) board. 1364 1365 This driver can also be built as a module. If so, the module 1366 will be called gpio-ljca. 1367 1368config GPIO_LP3943 1369 tristate "TI/National Semiconductor LP3943 GPIO expander" 1370 depends on MFD_LP3943 1371 help 1372 GPIO driver for LP3943 MFD. 1373 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs. 1374 Open drain outputs are required for this usage. 1375 1376config GPIO_LP873X 1377 tristate "TI LP873X GPO" 1378 depends on MFD_TI_LP873X 1379 help 1380 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present 1381 on LP873X PMICs. 1382 1383 This driver can also be built as a module. If so, the module will be 1384 called gpio-lp873x. 1385 1386config GPIO_LP87565 1387 tristate "TI LP87565 GPIO" 1388 depends on MFD_TI_LP87565 1389 help 1390 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present 1391 on LP87565 PMICs. 1392 1393 This driver can also be built as a module. If so, the module will be 1394 called gpio-lp87565. 1395 1396config GPIO_MADERA 1397 tristate "Cirrus Logic Madera class codecs" 1398 depends on PINCTRL_MADERA 1399 help 1400 Support for GPIOs on Cirrus Logic Madera class codecs. 1401 1402config GPIO_MAX77620 1403 tristate "GPIO support for PMIC MAX77620 and MAX20024" 1404 depends on MFD_MAX77620 1405 select GPIOLIB_IRQCHIP 1406 help 1407 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor. 1408 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The 1409 driver also provides interrupt support for each of the GPIOs. 1410 Say yes here to enable the max77620 to be used as GPIO controller. 1411 1412config GPIO_MAX77650 1413 tristate "Maxim MAX77650/77651 GPIO support" 1414 depends on MFD_MAX77650 1415 help 1416 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor. 1417 These chips have a single pin that can be configured as GPIO. 1418 1419config GPIO_PALMAS 1420 bool "TI PALMAS series PMICs GPIO" 1421 depends on MFD_PALMAS 1422 help 1423 Select this option to enable GPIO driver for the TI PALMAS 1424 series chip family. 1425 1426config GPIO_PMIC_EIC_SPRD 1427 tristate "Spreadtrum PMIC EIC support" 1428 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1429 depends on OF_GPIO 1430 select GPIOLIB_IRQCHIP 1431 help 1432 Say yes here to support Spreadtrum PMIC EIC device. 1433 1434config GPIO_RC5T583 1435 bool "RICOH RC5T583 GPIO" 1436 depends on MFD_RC5T583 1437 help 1438 Select this option to enable GPIO driver for the Ricoh RC5T583 1439 chip family. 1440 This driver provides the support for driving/reading the GPIO pins 1441 of RC5T583 device through standard GPIO library. 1442 1443config GPIO_SL28CPLD 1444 tristate "Kontron sl28cpld GPIO support" 1445 depends on MFD_SL28CPLD || COMPILE_TEST 1446 select GPIO_REGMAP 1447 select GPIOLIB_IRQCHIP 1448 select REGMAP_IRQ 1449 help 1450 This enables support for the GPIOs found on the Kontron sl28 CPLD. 1451 1452 This driver can also be built as a module. If so, the module will be 1453 called gpio-sl28cpld. 1454 1455config GPIO_STMPE 1456 bool "STMPE GPIOs" 1457 depends on MFD_STMPE 1458 depends on OF_GPIO 1459 select GPIOLIB_IRQCHIP 1460 help 1461 This enables support for the GPIOs found on the STMPE I/O 1462 Expanders. 1463 1464config GPIO_TC3589X 1465 bool "TC3589X GPIOs" 1466 depends on MFD_TC3589X 1467 depends on OF_GPIO 1468 select GPIOLIB_IRQCHIP 1469 help 1470 This enables support for the GPIOs found on the TC3589X 1471 I/O Expander. 1472 1473config GPIO_TIMBERDALE 1474 bool "Support for timberdale GPIO IP" 1475 depends on MFD_TIMBERDALE 1476 help 1477 Add support for the GPIO IP in the timberdale FPGA. 1478 1479config GPIO_TN48M_CPLD 1480 tristate "Delta Networks TN48M switch CPLD GPIO driver" 1481 depends on MFD_TN48M_CPLD 1482 select GPIO_REGMAP 1483 help 1484 This enables support for the GPIOs found on the Delta 1485 Networks TN48M switch Lattice CPLD. It provides 12 pins in total, 1486 they are input-only or output-only type. 1487 1488 This driver can also be built as a module. If so, the 1489 module will be called gpio-tn48m. 1490 1491config GPIO_TPS65086 1492 tristate "TI TPS65086 GPO" 1493 depends on MFD_TPS65086 1494 help 1495 This driver supports the GPO on TI TPS65086x PMICs. 1496 1497config GPIO_TPS65218 1498 tristate "TPS65218 GPIO" 1499 depends on MFD_TPS65218 1500 help 1501 Select this option to enable GPIO driver for the TPS65218 1502 chip family. 1503 1504config GPIO_TPS65219 1505 tristate "TPS65219 GPIO" 1506 depends on MFD_TPS65219 1507 default MFD_TPS65219 1508 help 1509 Select this option to enable GPIO driver for the TPS65219 chip 1510 family. 1511 GPIO0 is statically configured as either input or output prior to 1512 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting 1513 is statically configured by NVM. GPIO0 can't be used as a generic 1514 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when 1515 MULTI_DEVICE_EN=1. 1516 1517 This driver can also be built as a module. If so, the module will be 1518 called gpio_tps65219. 1519 1520config GPIO_TPS6586X 1521 bool "TPS6586X GPIO" 1522 depends on MFD_TPS6586X 1523 help 1524 Select this option to enable GPIO driver for the TPS6586X 1525 chip family. 1526 1527config GPIO_TPS65910 1528 bool "TPS65910 GPIO" 1529 depends on MFD_TPS65910 1530 help 1531 Select this option to enable GPIO driver for the TPS65910 1532 chip family. 1533 1534config GPIO_TPS65912 1535 tristate "TI TPS65912 GPIO" 1536 depends on MFD_TPS65912 1537 help 1538 This driver supports TPS65912 GPIO chip. 1539 1540config GPIO_TPS68470 1541 tristate "TPS68470 GPIO" 1542 depends on INTEL_SKL_INT3472 1543 help 1544 Select this option to enable GPIO driver for the TPS68470 1545 chip family. 1546 There are 7 GPIOs and few sensor-related GPIOs supported 1547 by the TPS68470. While the 7 GPIOs can be configured as 1548 input or output as appropriate, the sensor related GPIOs 1549 are "output only" GPIOs. 1550 1551config GPIO_TQMX86 1552 tristate "TQ-Systems QTMX86 GPIO" 1553 depends on MFD_TQMX86 || COMPILE_TEST 1554 depends on HAS_IOPORT_MAP 1555 select GPIOLIB_IRQCHIP 1556 help 1557 This driver supports GPIO on the TQMX86 IO controller. 1558 1559config GPIO_TWL4030 1560 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" 1561 depends on TWL4030_CORE 1562 help 1563 Say yes here to access the GPIO signals of various multi-function 1564 power management chips from Texas Instruments. 1565 1566config GPIO_TWL6040 1567 tristate "TWL6040 GPO" 1568 depends on TWL6040_CORE 1569 help 1570 Say yes here to access the GPO signals of twl6040 1571 audio chip from Texas Instruments. 1572 1573config GPIO_WHISKEY_COVE 1574 tristate "GPIO support for Whiskey Cove PMIC" 1575 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC 1576 select GPIOLIB_IRQCHIP 1577 help 1578 Support for GPIO pins on Whiskey Cove PMIC. 1579 1580 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC 1581 inside. 1582 1583 This driver can also be built as a module. If so, the module will be 1584 called gpio-wcove. 1585 1586config GPIO_WM831X 1587 tristate "WM831x GPIOs" 1588 depends on MFD_WM831X 1589 help 1590 Say yes here to access the GPIO signals of WM831x power management 1591 chips from Wolfson Microelectronics. 1592 1593config GPIO_WM8350 1594 tristate "WM8350 GPIOs" 1595 depends on MFD_WM8350 1596 help 1597 Say yes here to access the GPIO signals of WM8350 power management 1598 chips from Wolfson Microelectronics. 1599 1600config GPIO_WM8994 1601 tristate "WM8994 GPIOs" 1602 depends on MFD_WM8994 1603 help 1604 Say yes here to access the GPIO signals of WM8994 audio hub 1605 CODECs from Wolfson Microelectronics. 1606 1607endmenu 1608 1609menu "PCI GPIO expanders" 1610 depends on PCI 1611 1612config GPIO_AMD8111 1613 tristate "AMD 8111 GPIO driver" 1614 depends on X86 || COMPILE_TEST 1615 depends on HAS_IOPORT_MAP 1616 help 1617 The AMD 8111 southbridge contains 32 GPIO pins which can be used. 1618 1619 Note that usually system firmware/ACPI handles GPIO pins on their 1620 own and users might easily break their systems with uncareful usage 1621 of this driver! 1622 1623 If unsure, say N 1624 1625config GPIO_BT8XX 1626 tristate "BT8XX GPIO abuser" 1627 depends on VIDEO_BT848=n 1628 help 1629 The BT8xx frame grabber chip has 24 GPIO pins that can be abused 1630 as a cheap PCI GPIO card. 1631 1632 This chip can be found on Miro, Hauppauge and STB TV-cards. 1633 1634 The card needs to be physically altered for using it as a 1635 GPIO card. For more information on how to build a GPIO card 1636 from a BT8xx TV card, see the documentation file at 1637 Documentation/driver-api/gpio/bt8xxgpio.rst 1638 1639 If unsure, say N. 1640 1641config GPIO_MERRIFIELD 1642 tristate "Intel Merrifield GPIO support" 1643 depends on X86_INTEL_MID 1644 select GPIO_TANGIER 1645 help 1646 Say Y here to support Intel Merrifield GPIO. 1647 1648config GPIO_MLXBF 1649 tristate "Mellanox BlueField SoC GPIO" 1650 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1651 select GPIO_GENERIC 1652 help 1653 Say Y here if you want GPIO support on Mellanox BlueField SoC. 1654 1655config GPIO_MLXBF2 1656 tristate "Mellanox BlueField 2 SoC GPIO" 1657 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST) 1658 select GPIO_GENERIC 1659 select GPIOLIB_IRQCHIP 1660 help 1661 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC. 1662 1663config GPIO_MLXBF3 1664 tristate "Mellanox BlueField 3 SoC GPIO" 1665 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST 1666 select GPIO_GENERIC 1667 select GPIOLIB_IRQCHIP 1668 help 1669 Say Y if you want GPIO support on Mellanox BlueField 3 SoC. 1670 This GPIO controller supports interrupt handling and enables the 1671 manipulation of certain GPIO pins. 1672 This controller should be used in parallel with pinctrl-mlxbf3 to 1673 control the desired GPIOs. 1674 This driver can also be built as a module called mlxbf3-gpio. 1675 1676config GPIO_ML_IOH 1677 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support" 1678 depends on X86 || COMPILE_TEST 1679 select GENERIC_IRQ_CHIP 1680 help 1681 ML7213 is companion chip for Intel Atom E6xx series. 1682 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output 1683 Hub) which is for IVI (In-Vehicle Infotainment) use. 1684 This driver can access the IOH's GPIO device. 1685 1686config GPIO_PCH 1687 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO" 1688 depends on X86_32 || MIPS || COMPILE_TEST 1689 select GENERIC_IRQ_CHIP 1690 help 1691 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff, 1692 which is an IOH (Input/Output Hub) for x86 embedded processor. 1693 This driver can access PCH GPIO device. 1694 1695 This driver also can be used for LAPIS Semiconductor IOH (Input/ 1696 Output Hub), ML7223 and ML7831. 1697 ML7223 IOH is for MP (Media Phone) use. 1698 ML7831 IOH is for general purpose use. 1699 ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1700 ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1701 1702config GPIO_PCI_IDIO_16 1703 tristate "ACCES PCI-IDIO-16 GPIO support" 1704 select REGMAP_MMIO 1705 select GPIO_IDIO_16 1706 help 1707 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is 1708 generated when any of the inputs change state (low to high or high to 1709 low). Input filter control is not supported by this driver, and the 1710 input filters are deactivated by this driver. 1711 1712config GPIO_PCIE_IDIO_24 1713 tristate "ACCES PCIe-IDIO-24 GPIO support" 1714 select REGMAP_IRQ 1715 select REGMAP_MMIO 1716 select GPIOLIB_IRQCHIP 1717 select GPIO_REGMAP 1718 help 1719 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24, 1720 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated 1721 when any of the inputs change state (low to high or high to low). 1722 Input filter control is not supported by this driver, and the input 1723 filters are deactivated by this driver. 1724 1725config GPIO_RDC321X 1726 tristate "RDC R-321x GPIO support" 1727 select MFD_CORE 1728 select MFD_RDC321X 1729 help 1730 Support for the RDC R321x SoC GPIOs over southbridge 1731 PCI configuration space. 1732 1733config GPIO_SODAVILLE 1734 bool "Intel Sodaville GPIO support" 1735 depends on X86 && OF 1736 select GPIO_GENERIC 1737 select GENERIC_IRQ_CHIP 1738 help 1739 Say Y here to support Intel Sodaville GPIO. 1740 1741endmenu 1742 1743menu "SPI GPIO expanders" 1744 depends on SPI_MASTER 1745 1746config GPIO_74X164 1747 tristate "74x164 serial-in/parallel-out 8-bits shift register" 1748 depends on OF_GPIO 1749 help 1750 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 1751 shift registers. This driver can be used to provide access 1752 to more GPIO outputs. 1753 1754config GPIO_MAX3191X 1755 tristate "Maxim MAX3191x industrial serializer" 1756 select CRC8 1757 help 1758 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913, 1759 MAX31953 and MAX31963 industrial serializer, a daisy-chainable 1760 chip to make 8 digital 24V inputs available via SPI. Supports 1761 CRC checksums to guard against electromagnetic interference, 1762 as well as undervoltage and overtemperature detection. 1763 1764config GPIO_MAX7301 1765 tristate "Maxim MAX7301 GPIO expander" 1766 select GPIO_MAX730X 1767 help 1768 GPIO driver for Maxim MAX7301 SPI-based GPIO expander. 1769 1770config GPIO_MC33880 1771 tristate "Freescale MC33880 high-side/low-side switch" 1772 help 1773 SPI driver for Freescale MC33880 high-side/low-side switch. 1774 This provides GPIO interface supporting inputs and outputs. 1775 1776config GPIO_PISOSR 1777 tristate "Generic parallel-in/serial-out shift register" 1778 help 1779 GPIO driver for SPI compatible parallel-in/serial-out shift 1780 registers. These are input only devices. 1781 1782config GPIO_XRA1403 1783 tristate "EXAR XRA1403 16-bit GPIO expander" 1784 select REGMAP_SPI 1785 help 1786 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander. 1787 1788config GPIO_MOXTET 1789 tristate "Turris Mox Moxtet bus GPIO expander" 1790 depends on MOXTET 1791 help 1792 Say yes here if you are building for the Turris Mox router. 1793 This is the driver needed for configuring the GPIOs via the Moxtet 1794 bus. For example the Mox module with SFP cage needs this driver 1795 so that phylink can use corresponding GPIOs. 1796 1797endmenu 1798 1799menu "USB GPIO expanders" 1800 depends on USB 1801 1802config GPIO_VIPERBOARD 1803 tristate "Viperboard GPIO a & b support" 1804 depends on MFD_VIPERBOARD 1805 help 1806 Say yes here to access the GPIO signals of Nano River 1807 Technologies Viperboard. There are two GPIO chips on the 1808 board: gpioa and gpiob. 1809 See viperboard API specification and Nano 1810 River Tech's viperboard.h for detailed meaning 1811 of the module parameters. 1812 1813endmenu 1814 1815menu "Virtual GPIO drivers" 1816 1817config GPIO_AGGREGATOR 1818 tristate "GPIO Aggregator" 1819 help 1820 Say yes here to enable the GPIO Aggregator, which provides a way to 1821 aggregate existing GPIO lines into a new virtual GPIO chip. 1822 This can serve the following purposes: 1823 - Assign permissions for a collection of GPIO lines to a user, 1824 - Export a collection of GPIO lines to a virtual machine, 1825 - Provide a generic driver for a GPIO-operated device in an 1826 industrial control context, to be operated from userspace using 1827 the GPIO chardev interface. 1828 1829config GPIO_LATCH 1830 tristate "GPIO latch driver" 1831 help 1832 Say yes here to enable a driver for GPIO multiplexers based on latches 1833 connected to other GPIOs. 1834 1835config GPIO_MOCKUP 1836 tristate "GPIO Testing Driver (DEPRECATED)" 1837 select IRQ_SIM 1838 help 1839 This module is DEPRECATED. Please consider using gpio-sim instead. 1840 1841 This enables GPIO Testing driver, which provides a way to test GPIO 1842 subsystem through sysfs (or char device) and debugfs. 1843 User could use it through the script in 1844 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in 1845 it. 1846 1847config GPIO_VIRTIO 1848 tristate "VirtIO GPIO support" 1849 depends on VIRTIO 1850 select GPIOLIB_IRQCHIP 1851 help 1852 Say Y here to enable guest support for virtio-based GPIO controllers. 1853 1854 These virtual GPIOs can be routed to real GPIOs or attached to 1855 simulators on the host (like QEMU). 1856 1857config GPIO_SIM 1858 tristate "GPIO Simulator Module" 1859 select IRQ_SIM 1860 select CONFIGFS_FS 1861 help 1862 This enables the GPIO simulator - a configfs-based GPIO testing 1863 driver. 1864 1865endmenu 1866 1867endif 1868