1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
6 config ARCH_HAVE_CUSTOM_GPIO_H
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
46 config GPIOLIB_IRQCHIP
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
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.
62 bool "/sys/class/gpio/... (sysfs interface)"
65 Say Y here to add the legacy sysfs interface for GPIOs.
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead.
73 prompt "Character device (/dev/gpiochipN) support" if EXPERT
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.
80 Only say N if you are sure that the GPIO character device is not
86 bool "Support GPIO ABI Version 1"
90 Say Y here to support version 1 of the GPIO CDEV ABI.
92 This ABI version is deprecated.
93 Please use the latest ABI for new developments.
98 depends on HAS_IOMEM # Only for IOMEM drivers
105 # put drivers in the right section, in alphabetical order
107 # This symbol is selected by both I2C and SPI expanders
111 menu "Memory mapped GPIO drivers"
114 config GPIO_74XX_MMIO
115 tristate "GPIO driver for 74xx-ICs with MMIO access"
119 Say yes here to support GPIO functionality for 74xx-compatible ICs
120 with MMIO access. Compatible models include:
121 1 bit: 741G125 (Input), 741G74 (Output)
122 2 bits: 742G125 (Input), 7474 (Output)
123 4 bits: 74125 (Input), 74175 (Output)
124 6 bits: 74365 (Input), 74174 (Output)
125 8 bits: 74244 (Input), 74273 (Output)
126 16 bits: 741624 (Input), 7416374 (Output)
129 tristate "Altera GPIO"
131 select GPIOLIB_IRQCHIP
133 Say Y or M here to build support for the Altera PIO device.
135 If driver is built as a module it will be called gpio-altera.
138 tristate "AMD Promontory GPIO support"
142 driver for GPIO functionality on Promontory IOHub
143 Require ACPI ASL code to enumerate as a platform device.
146 tristate "Aspeed GPIO support"
147 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
148 select GPIOLIB_IRQCHIP
150 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
152 config GPIO_ASPEED_SGPIO
153 bool "Aspeed SGPIO support"
154 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
156 select GPIOLIB_IRQCHIP
158 Say Y here to support Aspeed AST2500 SGPIO functionality.
161 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
163 depends on ATH79 || COMPILE_TEST
165 select GPIOLIB_IRQCHIP
167 Select this option to enable GPIO driver for
168 Atheros AR71XX/AR724X/AR913X SoC devices.
170 config GPIO_RASPBERRYPI_EXP
171 tristate "Raspberry Pi 3 GPIO Expander"
172 default RASPBERRYPI_FIRMWARE
174 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
175 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
176 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
178 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
179 the firmware mailbox to communicate with VideoCore on BCM283x chips.
182 bool "Broadcom Kona GPIO"
183 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
185 Turn on GPIO support for Broadcom "Kona" chips.
187 config GPIO_BCM_XGS_IPROC
188 tristate "BRCM XGS iProc GPIO support"
189 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
191 select GPIOLIB_IRQCHIP
192 default ARCH_BCM_IPROC
194 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
197 tristate "BRCMSTB GPIO support"
198 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
199 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
203 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
206 tristate "Cadence GPIO support"
209 select GPIOLIB_IRQCHIP
211 Say yes here to enable support for Cadence GPIO controller.
214 tristate "CLPS711X GPIO support"
215 depends on ARCH_CLPS711X || COMPILE_TEST
218 Say yes here to support GPIO on CLPS711X SoCs.
221 bool "TI Davinci/Keystone GPIO support"
222 default y if ARCH_DAVINCI
223 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
225 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
228 tristate "Synopsys DesignWare APB GPIO driver"
230 select GPIOLIB_IRQCHIP
232 Say Y or M here to build support for the Synopsys DesignWare APB
236 tristate "Spreadtrum EIC support"
237 depends on ARCH_SPRD || COMPILE_TEST
239 select GPIOLIB_IRQCHIP
241 Say yes here to support Spreadtrum EIC device.
244 tristate "Emma Mobile GPIO"
245 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
247 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
251 depends on ARCH_EP93XX
253 select GPIOLIB_IRQCHIP
256 tristate "Support for GPIO pins on XR17V352/354/358"
257 depends on SERIAL_8250_EXAR
259 Selecting this option will enable handling of GPIO pins present
260 on Exar XR17V352/354/358 chips.
263 bool "GE FPGA based GPIO"
267 Support for common GPIO functionality provided on some GE Single Board
270 This driver provides basic support (configure as input or output, read
271 and write pin state) for GPIO implemented in a number of GE single
274 config GPIO_FTGPIO010
275 bool "Faraday FTGPIO010 GPIO"
278 select GPIOLIB_IRQCHIP
279 default (ARCH_GEMINI || ARCH_MOXART)
281 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
282 Cortina systems Gemini platforms, Moxa ART and others.
284 config GPIO_GENERIC_PLATFORM
285 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
288 Say yes here to support basic platform_device memory-mapped GPIO controllers.
291 tristate "Aeroflex Gaisler GRGPIO support"
296 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
297 VHDL IP core library.
300 tristate "Nintendo Wii (Hollywood) GPIO"
303 select GPIOLIB_IRQCHIP
305 Select this to support the GPIO controller of the Nintendo Wii.
310 tristate "Intel ICH GPIO"
311 depends on PCI && X86
315 Say yes here to support the GPIO functionality of a number of Intel
316 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
317 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
318 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
323 tristate "Intel IOP GPIO"
324 depends on ARCH_IOP32X || COMPILE_TEST
327 Say yes here to support the GPIO functionality of a number of Intel
333 bool "Intel IXP4xx GPIO"
334 depends on ARM # For <asm/mach-types.h>
335 depends on ARCH_IXP4XX
337 select GPIOLIB_IRQCHIP
338 select IRQ_DOMAIN_HIERARCHY
340 Say yes here to support the GPIO functionality of a number of Intel
341 IXP4xx series of chips.
345 tristate "Xylon LogiCVC GPIO support"
346 depends on MFD_SYSCON && OF
348 Say yes here to support GPIO functionality of the Xylon LogiCVC
349 programmable logic block.
352 bool "Loongson-2/3 GPIO support"
353 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
355 driver for GPIO functionality on Loongson-2F/3A/3B processors.
358 tristate "NXP LPC18XX/43XX GPIO support"
359 default y if ARCH_LPC18XX
360 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
361 select IRQ_DOMAIN_HIERARCHY
363 Select this option to enable GPIO driver for
364 NXP LPC18XX/43XX devices.
367 tristate "NXP LPC32XX GPIO support"
368 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
370 Select this option to enable GPIO driver for
374 tristate "GPIO support for Fujitsu MB86S7x Platforms"
376 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
379 tristate "MEN 16Z127 GPIO support"
383 Say yes here to support the MEN 16Z127 GPIO Controller
385 config GPIO_MM_LANTIQ
386 bool "Lantiq Memory mapped GPIOs"
387 depends on LANTIQ && SOC_XWAY
389 This enables support for memory mapped GPIOs on the External Bus Unit
390 (EBU) found on Lantiq SoCs. The gpios are output only as they are
391 created by attaching a 16bit latch to the bus.
395 depends on PPC_MPC52xx
398 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
399 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
400 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
405 Say Y here if you're going to use hardware that connects to the
406 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
409 bool "Mediatek MT7621 GPIO Support"
410 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
413 select GPIOLIB_IRQCHIP
415 Say yes here to support the Mediatek MT7621 SoC GPIO device
419 depends on PLAT_ORION || ARCH_MVEBU
421 select GENERIC_IRQ_CHIP
425 tristate "i.MX GPIO support"
426 depends on ARCH_MXC || COMPILE_TEST
428 select GENERIC_IRQ_CHIP
432 depends on ARCH_MXS || COMPILE_TEST
434 select GENERIC_IRQ_CHIP
437 tristate "Cavium OCTEON GPIO"
438 depends on CAVIUM_OCTEON_SOC
441 Say yes here to support the on-chip GPIO lines on the OCTEON
445 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
446 default y if ARCH_OMAP
448 select GENERIC_IRQ_CHIP
449 select GPIOLIB_IRQCHIP
451 Say yes here to enable GPIO support for TI OMAP SoCs.
454 tristate "PrimeCell PL061 GPIO support"
457 select GPIOLIB_IRQCHIP
459 Say yes here to support the PrimeCell PL061 GPIO device
461 config GPIO_PMIC_EIC_SPRD
462 tristate "Spreadtrum PMIC EIC support"
463 depends on MFD_SC27XX_PMIC || COMPILE_TEST
465 select GPIOLIB_IRQCHIP
467 Say yes here to support Spreadtrum PMIC EIC device.
470 bool "PXA GPIO support"
471 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
473 Say yes here to support the PXA GPIO device
476 tristate "Renesas R-Car GPIO"
477 depends on ARCH_RENESAS || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
480 Say yes here to support GPIO on Renesas R-Car SoCs.
483 bool "RDA Micro GPIO controller support"
484 depends on ARCH_RDA || COMPILE_TEST
487 select GPIOLIB_IRQCHIP
489 Say Y here to support RDA Micro GPIO controller.
494 A 32-bit single register GPIO fixed in/out implementation. This
495 can be used to represent any register as a set of GPIO signals.
497 config GPIO_SAMA5D2_PIOBU
498 tristate "SAMA5D2 PIOBU GPIO support"
499 depends on MFD_SYSCON
503 Say yes here to use the PIOBU pins as GPIOs.
505 PIOBU pins on the SAMA5D2 can be used as GPIOs.
506 The difference from regular GPIOs is that they
507 maintain their value during backup/self-refresh.
510 bool "SiFive GPIO support"
511 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
513 select GPIOLIB_IRQCHIP
516 Say yes here to support the GPIO device on SiFive SoCs.
519 tristate "SIOX GPIO support"
521 select GPIOLIB_IRQCHIP
523 Say yes here to support SIOX I/O devices. These are units connected
524 via a SIOX bus and have a number of fixed-direction I/O lines.
526 config GPIO_SNPS_CREG
527 bool "Synopsys GPIO via CREG (Control REGisters) driver"
528 depends on ARC || COMPILE_TEST
531 This driver supports GPIOs via CREG on various Synopsys SoCs.
532 This is a single-register MMIO GPIO driver for complex cases
533 where only several fields in register belong to GPIO lines and
534 each GPIO line owns a field with different length and on/off value.
536 config GPIO_SPEAR_SPICS
537 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
538 depends on PLAT_SPEAR
539 select GENERIC_IRQ_CHIP
541 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
544 tristate "Spreadtrum GPIO support"
545 depends on ARCH_SPRD || COMPILE_TEST
547 select GPIOLIB_IRQCHIP
549 Say yes here to support Spreadtrum GPIO device.
552 bool "STA2x11/ConneXt GPIO support"
553 depends on MFD_STA2X11
554 select GENERIC_IRQ_CHIP
556 Say yes here to support the STA2x11/ConneXt GPIO device.
557 The GPIO module has 128 GPIO pins with alternate functions.
560 bool "XWAY STP GPIOs"
561 depends on SOC_XWAY || COMPILE_TEST
564 This enables support for the Serial To Parallel (STP) unit found on
565 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
566 that can be up to 24 bit. This peripheral is aimed at driving leds.
567 Some of the gpios/leds can be auto updated by the soc with dsl and
571 tristate "GPIO based on SYSCON"
572 depends on MFD_SYSCON && OF
574 Say yes here to support GPIO functionality though SYSCON driver.
579 select GENERIC_IRQ_CHIP
583 bool "NVIDIA Tegra GPIO support"
585 depends on ARCH_TEGRA || COMPILE_TEST
588 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
591 tristate "NVIDIA Tegra186 GPIO support"
592 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
593 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
595 select GPIOLIB_IRQCHIP
596 select IRQ_DOMAIN_HIERARCHY
598 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
601 tristate "TS-4800 DIO blocks and compatibles"
603 depends on SOC_IMX51 || COMPILE_TEST
606 This driver support TS-4800 FPGA GPIO controllers.
609 tristate "Cavium ThunderX/OCTEON-TX GPIO"
610 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
612 select GPIOLIB_IRQCHIP
613 select IRQ_DOMAIN_HIERARCHY
614 select IRQ_FASTEOI_HIERARCHY_HANDLERS
616 Say yes here to support the on-chip GPIO lines on the ThunderX
617 and OCTEON-TX families of SoCs.
620 tristate "UniPhier GPIO support"
621 depends on ARCH_UNIPHIER || COMPILE_TEST
623 select IRQ_DOMAIN_HIERARCHY
625 Say yes here to support UniPhier GPIOs.
629 depends on ARCH_MXC && SOC_VF610
630 select GPIOLIB_IRQCHIP
632 Say yes here to support Vybrid vf610 GPIOs.
635 tristate "NEC VR4100 series General-purpose I/O Uint support"
636 depends on CPU_VR41XX
638 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
641 tristate "VIA VX855/VX875 GPIO"
642 depends on (X86 || COMPILE_TEST) && PCI
646 Support access to the VX855/VX875 GPIO lines through the gpio library.
648 This driver provides common support for accessing the device,
649 additional drivers must be enabled in order to use the
650 functionality of the device.
653 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
654 depends on MFD_WCD934X && OF_GPIO
656 This driver is to supprot GPIO block found on the Qualcomm Technologies
657 Inc WCD9340/WCD9341 Audio Codec.
660 bool "APM X-Gene GPIO controller support"
661 depends on ARM64 && OF_GPIO
663 This driver is to support the GPIO block within the APM X-Gene SoC
664 platform's generic flash controller. The GPIO pins are muxed with
665 the generic flash controller's address and data pins. Say yes
666 here to enable the GFC GPIO functionality.
669 tristate "APM X-Gene GPIO standby controller support"
670 depends on (ARCH_XGENE || COMPILE_TEST)
672 select GPIOLIB_IRQCHIP
673 select IRQ_DOMAIN_HIERARCHY
675 This driver supports the GPIO block within the APM X-Gene
676 Standby Domain. Say yes here to enable the GPIO functionality.
679 tristate "Xilinx GPIO support"
681 Say yes here to support the Xilinx FPGA GPIO device
684 tristate "Netlogic XLP GPIO support"
685 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
686 select GPIOLIB_IRQCHIP
688 This driver provides support for GPIO interface on Netlogic XLP MIPS64
689 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
690 XLP9XX and XLP5XX. The same GPIO controller block is also present in
691 Cavium's ThunderX2 CN99XX SoCs.
696 bool "Xtensa GPIO32 support"
698 depends on HAVE_XTENSA_GPIO32
701 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
702 and EXPSTATE (output) ports
705 bool "LSI ZEVIO SoC memory mapped GPIOs"
706 depends on ARM && OF_GPIO
708 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
711 tristate "Xilinx Zynq GPIO support"
712 depends on ARCH_ZYNQ || ARCH_ZYNQMP
713 select GPIOLIB_IRQCHIP
715 Say yes here to support Xilinx Zynq GPIO controller.
718 bool "ZTE ZX GPIO support"
719 depends on ARCH_ZX || COMPILE_TEST
720 select GPIOLIB_IRQCHIP
722 Say yes here to support the GPIO device on ZTE ZX SoCs.
724 config GPIO_LOONGSON1
725 tristate "Loongson1 GPIO support"
726 depends on MACH_LOONGSON32
729 Say Y or M here to support GPIO on Loongson1 SoCs.
732 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
734 This option enables driver for GPIO on AMDs Fusion Controller Hub,
735 as found on G-series SOCs (eg. GX-412TC)
737 Note: This driver doesn't registers itself automatically, as it
738 needs to be provided with platform specific configuration.
739 (See eg. CONFIG_PCENGINES_APU2.)
742 menu "Port-mapped I/O GPIO drivers"
743 depends on X86 # Unconditional I/O space access
745 config GPIO_104_DIO_48E
746 tristate "ACCES 104-DIO-48E GPIO support"
749 select GPIOLIB_IRQCHIP
751 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
752 104-DIO-24E). The base port addresses for the devices may be
753 configured via the base module parameter. The interrupt line numbers
754 for the devices may be configured via the irq module parameter.
756 config GPIO_104_IDIO_16
757 tristate "ACCES 104-IDIO-16 GPIO support"
760 select GPIOLIB_IRQCHIP
762 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
763 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
764 base port addresses for the devices may be configured via the base
765 module parameter. The interrupt line numbers for the devices may be
766 configured via the irq module parameter.
768 config GPIO_104_IDI_48
769 tristate "ACCES 104-IDI-48 GPIO support"
772 select GPIOLIB_IRQCHIP
774 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
775 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
776 the devices may be configured via the base module parameter. The
777 interrupt line numbers for the devices may be configured via the irq
781 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
783 This option enables support for GPIOs found on Fintek Super-I/O
784 chips F71869, F71869A, F71882FG, F71889F and F81866.
786 To compile this driver as a module, choose M here: the module will
787 be called f7188x-gpio.
790 tristate "Diamond Systems GPIO-MM GPIO support"
794 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
796 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
797 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
798 support for these 48 channels of digital I/O.
800 The base port addresses for the devices may be configured via the base
801 array module parameter.
804 tristate "IT87xx GPIO support"
806 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
808 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
809 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
812 To compile this driver as a module, choose M here: the module will
816 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
817 depends on (X86 || COMPILE_TEST) && PCI
821 Say yes here to support GPIO interface on Intel Poulsbo SCH,
822 Intel Tunnel Creek processor, Intel Centerton processor or
823 Intel Quark X1000 SoC.
825 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
826 powered by the core power rail and are turned off during sleep
827 modes (S3 and higher). The remaining four GPIOs are powered by
828 the Intel SCH suspend power supply. These GPIOs remain
829 active during S3. The suspend powered GPIOs can be used to wake the
830 system from the Suspend-to-RAM state.
832 The Intel Tunnel Creek processor has 5 GPIOs powered by the
833 core power rail and 9 from suspend power supply.
835 The Intel Centerton processor has a total of 30 GPIO pins.
836 Twenty-one are powered by the core power rail and 9 from the
837 suspend power supply.
839 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
840 power well and 6 from the suspend power well.
843 tristate "SMSC SCH311x SuperI/O GPIO"
845 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
846 SCH3116 "Super I/O" chipsets.
848 To compile this driver as a module, choose M here: the module will
849 be called gpio-sch311x.
852 tristate "TS-5500 DIO blocks and compatibles"
853 depends on TS5500 || COMPILE_TEST
855 This driver supports Digital I/O exposed by pin blocks found on some
856 Technologic Systems platforms. It includes, but is not limited to, 3
857 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
861 tristate "Winbond Super I/O GPIO support"
864 This option enables support for GPIOs found on Winbond Super I/O
866 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
869 You will need to provide a module parameter "gpios", or a
870 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
871 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
873 To compile this driver as a module, choose M here: the module will
874 be called gpio-winbond.
877 tristate "WinSystems WS16C48 GPIO support"
879 select GPIOLIB_IRQCHIP
881 Enables GPIO support for the WinSystems WS16C48. The base port
882 addresses for the devices may be configured via the base module
883 parameter. The interrupt line numbers for the devices may be
884 configured via the irq module parameter.
888 menu "I2C GPIO expanders"
892 tristate "ADP5588 I2C GPIO expander"
894 This option enables support for 18 GPIOs found
895 on Analog Devices ADP5588 GPIO Expanders.
897 config GPIO_ADP5588_IRQ
898 bool "Interrupt controller support for ADP5588"
899 depends on GPIO_ADP5588=y
900 select GPIOLIB_IRQCHIP
902 Say yes here to enable the adp5588 to be used as an interrupt
903 controller. It requires the driver to be built in the kernel.
906 tristate "Avionic Design N-bit GPIO expander"
908 select GPIOLIB_IRQCHIP
910 This option enables support for N GPIOs found on Avionic Design
911 I2C GPIO expanders. The register space will be extended by powers
912 of two, so the controller will need to accommodate for that. For
913 example: if a controller provides 48 pins, 6 registers will be
914 enough to represent all pins, but the driver will assume a
915 register layout for 64 pins (8 registers).
918 tristate "Gateworks PLD GPIO Expander"
921 Say yes here to provide access to the Gateworks I2C PLD GPIO
922 Expander. This is used at least on the Cambria GW2358-4.
925 tristate "Maxim MAX7300 GPIO expander"
928 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
931 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
933 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
934 Port Expanders. Each IO port on these chips has a fixed role of
935 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
936 Input and Output (designed by 'P'). The combinations are listed
939 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
940 max7322 (4I4O), max7323 (4P4O)
942 16 bits: max7324 (8I8O), max7325 (8P8O),
943 max7326 (4I12O), max7327 (4P12O)
945 Board setup code must specify the model to use, and the start
946 number for these GPIOs.
948 config GPIO_MAX732X_IRQ
949 bool "Interrupt controller support for MAX732x"
950 depends on GPIO_MAX732X=y
951 select GPIOLIB_IRQCHIP
953 Say yes here to enable the max732x to be used as an interrupt
954 controller. It requires the driver to be built in the kernel.
956 config GPIO_MC9S08DZ60
957 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
958 depends on I2C=y && MACH_MX35_3DS
960 Select this to enable the MC9S08DZ60 GPIO driver
963 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
966 Say yes here to provide access to several register-oriented
967 SMBus I/O expanders, made mostly by NXP or TI. Compatible
970 4 bits: pca9536, pca9537
972 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
973 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
975 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
980 40 bits: pca9505, pca9698
982 config GPIO_PCA953X_IRQ
983 bool "Interrupt controller support for PCA953x"
984 depends on GPIO_PCA953X
985 select GPIOLIB_IRQCHIP
987 Say yes here to enable the pca953x to be used as an interrupt
988 controller. It requires the driver to be built in the kernel.
991 tristate "PCA9570 4-Bit I2C GPO expander"
993 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
995 To compile this driver as a module, choose M here: the module will
996 be called gpio-pca9570.
999 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1000 select GPIOLIB_IRQCHIP
1003 Say yes here to provide access to most "quasi-bidirectional" I2C
1004 GPIO expanders used for additional digital outputs or inputs.
1005 Most of these parts are from NXP, though TI is a second source for
1006 some of them. Compatible models include:
1008 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1009 pca9670, pca9672, pca9674, pca9674a,
1012 16 bits: pcf8575, pcf8575c, pca8575,
1013 pca9671, pca9673, pca9675
1015 Your board setup code will need to declare the expanders in
1016 use, and assign numbers to the GPIOs they expose. Those GPIOs
1017 can then be used from drivers and other kernel code, just like
1018 other GPIOs, but only accessible from task contexts.
1020 This driver provides an in-kernel interface to those GPIOs using
1021 platform-neutral GPIO calls.
1023 config GPIO_TPIC2810
1024 tristate "TPIC2810 8-Bit I2C GPO expander"
1026 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1028 To compile this driver as a module, choose M here: the module will
1029 be called gpio-tpic2810.
1032 tristate "Technologic Systems FPGA I2C GPIO"
1033 depends on SOC_IMX6 || COMPILE_TEST
1036 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1037 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1041 menu "MFD GPIO expanders"
1044 tristate "GPIO Support for ADP5520 PMIC"
1045 depends on PMIC_ADP5520
1047 This option enables support for on-chip GPIO found
1048 on Analog Devices ADP5520 PMICs.
1050 config GPIO_ALTERA_A10SR
1051 tristate "Altera Arria10 System Resource GPIO"
1052 depends on MFD_ALTERA_A10SR
1054 Driver for Arria10 Development Kit GPIO expansion which
1055 includes reads of pushbuttons and DIP switches as well
1059 tristate "Wolfson Microelectronics Arizona class devices"
1060 depends on MFD_ARIZONA
1062 Support for GPIOs on Wolfson Arizona class devices.
1065 tristate "ROHM BD70528 GPIO support"
1066 depends on MFD_ROHM_BD70528
1068 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1069 available on the ROHM PMIC in total. The GPIOs can also
1070 generate interrupts.
1072 This driver can also be built as a module. If so, the module
1073 will be called gpio-bd70528.
1076 tristate "ROHM BD71828 GPIO support"
1077 depends on MFD_ROHM_BD71828
1079 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1080 available on the ROHM PMIC in total. The GPIOs are limited to
1081 outputs only and pins must be configured to GPIO outputs by
1082 OTP. Enable this only if you want to use these pins as outputs.
1084 This driver can also be built as a module. If so, the module
1085 will be called gpio-bd71828.
1087 config GPIO_BD9571MWV
1088 tristate "ROHM BD9571 GPIO support"
1089 depends on MFD_BD9571MWV
1091 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1092 available on the ROHM PMIC in total, both of which can also
1093 generate interrupts.
1095 This driver can also be built as a module. If so, the module
1096 will be called gpio-bd9571mwv.
1098 config GPIO_CRYSTAL_COVE
1099 tristate "GPIO support for Crystal Cove PMIC"
1100 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1101 select GPIOLIB_IRQCHIP
1103 Support for GPIO pins on Crystal Cove PMIC.
1105 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1108 This driver can also be built as a module. If so, the module will be
1109 called gpio-crystalcove.
1112 tristate "AMD CS5535/CS5536 GPIO support"
1113 depends on X86 || MIPS || COMPILE_TEST
1114 depends on MFD_CS5535
1116 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1117 can be used for quite a number of things. The CS5535/6 is found on
1118 AMD Geode and Lemote Yeeloong devices.
1123 tristate "Dialog DA9052 GPIO"
1124 depends on PMIC_DA9052
1126 Say yes here to enable the GPIO driver for the DA9052 chip.
1129 tristate "Dialog Semiconductor DA9055 GPIO"
1130 depends on MFD_DA9055
1132 Say yes here to enable the GPIO driver for the DA9055 chip.
1134 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1135 be controller by this driver.
1137 If driver is built as a module it will be called gpio-da9055.
1140 tristate "Diolan DLN2 GPIO support"
1142 select GPIOLIB_IRQCHIP
1145 Select this option to enable GPIO driver for the Diolan DLN2
1148 This driver can also be built as a module. If so, the module
1149 will be called gpio-dln2.
1152 bool "HTC EGPIO support"
1155 This driver supports the CPLD egpio chip present on
1156 several HTC phones. It provides basic support for input
1157 pins, output pins, and irqs.
1159 config GPIO_JANZ_TTL
1160 tristate "Janz VMOD-TTL Digital IO Module"
1161 depends on MFD_JANZ_CMODIO
1163 This enables support for the Janz VMOD-TTL Digital IO module.
1164 This driver provides support for driving the pins in output
1165 mode only. Input mode is not supported.
1168 tristate "Kontron ETX / COMexpress GPIO"
1169 depends on MFD_KEMPLD
1171 This enables support for the PLD GPIO interface on some Kontron ETX
1172 and COMexpress (ETXexpress) modules.
1174 This driver can also be built as a module. If so, the module will be
1178 tristate "TI/National Semiconductor LP3943 GPIO expander"
1179 depends on MFD_LP3943
1181 GPIO driver for LP3943 MFD.
1182 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1183 Open drain outputs are required for this usage.
1186 tristate "TI LP873X GPO"
1187 depends on MFD_TI_LP873X
1189 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1192 This driver can also be built as a module. If so, the module will be
1196 tristate "TI LP87565 GPIO"
1197 depends on MFD_TI_LP87565
1199 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1202 This driver can also be built as a module. If so, the module will be
1203 called gpio-lp87565.
1206 tristate "Cirrus Logic Madera class codecs"
1207 depends on PINCTRL_MADERA
1209 Support for GPIOs on Cirrus Logic Madera class codecs.
1211 config GPIO_MAX77620
1212 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1213 depends on MFD_MAX77620
1214 select GPIOLIB_IRQCHIP
1216 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1217 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1218 driver also provides interrupt support for each of the gpios.
1219 Say yes here to enable the max77620 to be used as gpio controller.
1221 config GPIO_MAX77650
1222 tristate "Maxim MAX77650/77651 GPIO support"
1223 depends on MFD_MAX77650
1225 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1226 These chips have a single pin that can be configured as GPIO.
1229 bool "Intel MSIC mixed signal gpio support"
1230 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1232 Enable support for GPIO on intel MSIC controllers found in
1236 bool "TI PALMAS series PMICs GPIO"
1237 depends on MFD_PALMAS
1239 Select this option to enable GPIO driver for the TI PALMAS
1243 bool "RICOH RC5T583 GPIO"
1244 depends on MFD_RC5T583
1246 Select this option to enable GPIO driver for the Ricoh RC5T583
1248 This driver provides the support for driving/reading the gpio pins
1249 of RC5T583 device through standard gpio library.
1251 config GPIO_SL28CPLD
1252 tristate "Kontron sl28cpld GPIO support"
1253 depends on MFD_SL28CPLD || COMPILE_TEST
1255 select GPIOLIB_IRQCHIP
1258 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1260 This driver can also be built as a module. If so, the module will be
1261 called gpio-sl28cpld.
1265 depends on MFD_STMPE
1267 select GPIOLIB_IRQCHIP
1269 This enables support for the GPIOs found on the STMPE I/O
1273 bool "TC3589X GPIOs"
1274 depends on MFD_TC3589X
1276 select GPIOLIB_IRQCHIP
1278 This enables support for the GPIOs found on the TC3589X
1281 config GPIO_TIMBERDALE
1282 bool "Support for timberdale GPIO IP"
1283 depends on MFD_TIMBERDALE
1285 Add support for the GPIO IP in the timberdale FPGA.
1287 config GPIO_TPS65086
1288 tristate "TI TPS65086 GPO"
1289 depends on MFD_TPS65086
1291 This driver supports the GPO on TI TPS65086x PMICs.
1293 config GPIO_TPS65218
1294 tristate "TPS65218 GPIO"
1295 depends on MFD_TPS65218
1297 Select this option to enable GPIO driver for the TPS65218
1300 config GPIO_TPS6586X
1301 bool "TPS6586X GPIO"
1302 depends on MFD_TPS6586X
1304 Select this option to enable GPIO driver for the TPS6586X
1307 config GPIO_TPS65910
1308 bool "TPS65910 GPIO"
1309 depends on MFD_TPS65910
1311 Select this option to enable GPIO driver for the TPS65910
1314 config GPIO_TPS65912
1315 tristate "TI TPS65912 GPIO"
1316 depends on MFD_TPS65912
1318 This driver supports TPS65912 gpio chip
1320 config GPIO_TPS68470
1321 bool "TPS68470 GPIO"
1322 depends on MFD_TPS68470
1324 Select this option to enable GPIO driver for the TPS68470
1326 There are 7 GPIOs and few sensor related GPIOs supported
1327 by the TPS68470. While the 7 GPIOs can be configured as
1328 input or output as appropriate, the sensor related GPIOs
1329 are "output only" GPIOs.
1331 This driver config is bool, as the GPIO functionality
1332 of the TPS68470 must be available before dependent
1336 tristate "TQ-Systems QTMX86 GPIO"
1337 depends on MFD_TQMX86 || COMPILE_TEST
1338 select GPIOLIB_IRQCHIP
1340 This driver supports GPIO on the TQMX86 IO controller.
1343 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1344 depends on TWL4030_CORE
1346 Say yes here to access the GPIO signals of various multi-function
1347 power management chips from Texas Instruments.
1350 tristate "TWL6040 GPO"
1351 depends on TWL6040_CORE
1353 Say yes here to access the GPO signals of twl6040
1354 audio chip from Texas Instruments.
1357 tristate "Philips UCB1400 GPIO"
1358 depends on UCB1400_CORE
1360 This enables support for the Philips UCB1400 GPIO pins.
1361 The UCB1400 is an AC97 audio codec.
1363 config GPIO_WHISKEY_COVE
1364 tristate "GPIO support for Whiskey Cove PMIC"
1365 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1366 select GPIOLIB_IRQCHIP
1368 Support for GPIO pins on Whiskey Cove PMIC.
1370 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1373 This driver can also be built as a module. If so, the module will be
1377 tristate "WM831x GPIOs"
1378 depends on MFD_WM831X
1380 Say yes here to access the GPIO signals of WM831x power management
1381 chips from Wolfson Microelectronics.
1384 tristate "WM8350 GPIOs"
1385 depends on MFD_WM8350
1387 Say yes here to access the GPIO signals of WM8350 power management
1388 chips from Wolfson Microelectronics.
1391 tristate "WM8994 GPIOs"
1392 depends on MFD_WM8994
1394 Say yes here to access the GPIO signals of WM8994 audio hub
1395 CODECs from Wolfson Microelectronics.
1399 menu "PCI GPIO expanders"
1403 tristate "AMD 8111 GPIO driver"
1404 depends on X86 || COMPILE_TEST
1406 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1408 Note, that usually system firmware/ACPI handles GPIO pins on their
1409 own and users might easily break their systems with uncarefull usage
1415 tristate "BT8XX GPIO abuser"
1416 depends on VIDEO_BT848=n
1418 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1419 as a cheap PCI GPIO card.
1421 This chip can be found on Miro, Hauppauge and STB TV-cards.
1423 The card needs to be physically altered for using it as a
1424 GPIO card. For more information on how to build a GPIO card
1425 from a BT8xx TV card, see the documentation file at
1426 Documentation/driver-api/gpio/bt8xxgpio.rst
1430 config GPIO_INTEL_MID
1431 bool "Intel MID GPIO support"
1432 depends on X86_INTEL_MID
1433 select GPIOLIB_IRQCHIP
1435 Say Y here to support Intel MID GPIO.
1437 config GPIO_MERRIFIELD
1438 tristate "Intel Merrifield GPIO support"
1439 depends on X86_INTEL_MID
1440 select GPIOLIB_IRQCHIP
1442 Say Y here to support Intel Merrifield GPIO.
1445 tristate "Mellanox BlueField SoC GPIO"
1446 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1449 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1452 tristate "Mellanox BlueField 2 SoC GPIO"
1453 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1456 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1459 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1460 depends on X86 || COMPILE_TEST
1461 select GENERIC_IRQ_CHIP
1463 ML7213 is companion chip for Intel Atom E6xx series.
1464 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1465 Hub) which is for IVI(In-Vehicle Infotainment) use.
1466 This driver can access the IOH's GPIO device.
1469 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1470 depends on X86_32 || MIPS || COMPILE_TEST
1471 select GENERIC_IRQ_CHIP
1473 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1474 which is an IOH(Input/Output Hub) for x86 embedded processor.
1475 This driver can access PCH GPIO device.
1477 This driver also can be used for LAPIS Semiconductor IOH(Input/
1478 Output Hub), ML7223 and ML7831.
1479 ML7223 IOH is for MP(Media Phone) use.
1480 ML7831 IOH is for general purpose use.
1481 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1482 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1484 config GPIO_PCI_IDIO_16
1485 tristate "ACCES PCI-IDIO-16 GPIO support"
1486 select GPIOLIB_IRQCHIP
1488 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1489 generated when any of the inputs change state (low to high or high to
1490 low). Input filter control is not supported by this driver, and the
1491 input filters are deactivated by this driver.
1493 config GPIO_PCIE_IDIO_24
1494 tristate "ACCES PCIe-IDIO-24 GPIO support"
1495 select GPIOLIB_IRQCHIP
1497 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1498 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1499 when any of the inputs change state (low to high or high to low).
1500 Input filter control is not supported by this driver, and the input
1501 filters are deactivated by this driver.
1504 tristate "RDC R-321x GPIO support"
1508 Support for the RDC R321x SoC GPIOs over southbridge
1509 PCI configuration space.
1511 config GPIO_SODAVILLE
1512 bool "Intel Sodaville GPIO support"
1513 depends on X86 && OF
1515 select GENERIC_IRQ_CHIP
1517 Say Y here to support Intel Sodaville GPIO.
1521 menu "SPI GPIO expanders"
1522 depends on SPI_MASTER
1525 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1528 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1529 shift registers. This driver can be used to provide access
1530 to more gpio outputs.
1532 config GPIO_MAX3191X
1533 tristate "Maxim MAX3191x industrial serializer"
1536 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1537 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1538 chip to make 8 digital 24V inputs available via SPI. Supports
1539 CRC checksums to guard against electromagnetic interference,
1540 as well as undervoltage and overtemperature detection.
1543 tristate "Maxim MAX7301 GPIO expander"
1546 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1549 tristate "Freescale MC33880 high-side/low-side switch"
1551 SPI driver for Freescale MC33880 high-side/low-side switch.
1552 This provides GPIO interface supporting inputs and outputs.
1555 tristate "Generic parallel-in/serial-out shift register"
1557 GPIO driver for SPI compatible parallel-in/serial-out shift
1558 registers. These are input only devices.
1561 tristate "EXAR XRA1403 16-bit GPIO expander"
1564 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1567 tristate "Turris Mox Moxtet bus GPIO expander"
1570 Say yes here if you are building for the Turris Mox router.
1571 This is the driver needed for configuring the GPIOs via the Moxtet
1572 bus. For example the Mox module with SFP cage needs this driver
1573 so that phylink can use corresponding GPIOs.
1577 menu "USB GPIO expanders"
1580 config GPIO_VIPERBOARD
1581 tristate "Viperboard GPIO a & b support"
1582 depends on MFD_VIPERBOARD
1584 Say yes here to access the GPIO signals of Nano River
1585 Technologies Viperboard. There are two GPIO chips on the
1586 board: gpioa and gpiob.
1587 See viperboard API specification and Nano
1588 River Tech's viperboard.h for detailed meaning
1589 of the module parameters.
1593 config GPIO_AGGREGATOR
1594 tristate "GPIO Aggregator"
1596 Say yes here to enable the GPIO Aggregator, which provides a way to
1597 aggregate existing GPIO lines into a new virtual GPIO chip.
1598 This can serve the following purposes:
1599 - Assign permissions for a collection of GPIO lines to a user,
1600 - Export a collection of GPIO lines to a virtual machine,
1601 - Provide a generic driver for a GPIO-operated device in an
1602 industrial control context, to be operated from userspace using
1603 the GPIO chardev interface.
1606 tristate "GPIO Testing Driver"
1609 This enables GPIO Testing driver, which provides a way to test GPIO
1610 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1611 must be selected for this test.
1612 User could use it through the script in
1613 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in