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)" if EXPERT
64 select GPIO_CDEV # We need to encourage the new ABI
66 Say Y here to add the legacy sysfs interface for GPIOs.
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.
74 prompt "Character device (/dev/gpiochipN) support" if EXPERT
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.
81 Only say N if you are sure that the GPIO character device is not
87 bool "Support GPIO ABI Version 1"
91 Say Y here to support version 1 of the GPIO CDEV ABI.
93 This ABI version is deprecated.
94 Please use the latest ABI for new developments.
99 depends on HAS_IOMEM # Only for IOMEM drivers
106 # put drivers in the right section, in alphabetical order
108 # This symbol is selected by both I2C and SPI expanders
112 menu "Memory mapped GPIO drivers"
115 config GPIO_74XX_MMIO
116 tristate "GPIO driver for 74xx-ICs with MMIO access"
120 Say yes here to support GPIO functionality for 74xx-compatible ICs
121 with MMIO access. Compatible models include:
122 1 bit: 741G125 (Input), 741G74 (Output)
123 2 bits: 742G125 (Input), 7474 (Output)
124 4 bits: 74125 (Input), 74175 (Output)
125 6 bits: 74365 (Input), 74174 (Output)
126 8 bits: 74244 (Input), 74273 (Output)
127 16 bits: 741624 (Input), 7416374 (Output)
130 tristate "Altera GPIO"
132 select GPIOLIB_IRQCHIP
134 Say Y or M here to build support for the Altera PIO device.
136 If driver is built as a module it will be called gpio-altera.
139 tristate "AMD Promontory GPIO support"
143 Driver for GPIO functionality on Promontory IOHub.
144 Requires ACPI ASL code to enumerate as a platform device.
147 tristate "Aspeed GPIO support"
148 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
149 select GPIOLIB_IRQCHIP
151 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
153 config GPIO_ASPEED_SGPIO
154 bool "Aspeed SGPIO support"
155 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
157 select GPIOLIB_IRQCHIP
159 Say Y here to support Aspeed AST2500 SGPIO functionality.
162 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
164 depends on ATH79 || COMPILE_TEST
166 select GPIOLIB_IRQCHIP
168 Select this option to enable GPIO driver for
169 Atheros AR71XX/AR724X/AR913X SoC devices.
171 config GPIO_RASPBERRYPI_EXP
172 tristate "Raspberry Pi 3 GPIO Expander"
173 default RASPBERRYPI_FIRMWARE
175 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
176 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
177 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
179 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
180 the firmware mailbox to communicate with VideoCore on BCM283x chips.
183 bool "Broadcom Kona GPIO"
184 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
186 Turn on GPIO support for Broadcom "Kona" chips.
188 config GPIO_BCM_XGS_IPROC
189 tristate "BRCM XGS iProc GPIO support"
190 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
192 select GPIOLIB_IRQCHIP
193 default ARCH_BCM_IPROC
195 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
198 tristate "BRCMSTB GPIO support"
199 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
200 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
204 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
207 tristate "Cadence GPIO support"
210 select GPIOLIB_IRQCHIP
212 Say yes here to enable support for Cadence GPIO controller.
215 tristate "CLPS711X GPIO support"
216 depends on ARCH_CLPS711X || COMPILE_TEST
219 Say yes here to support GPIO on CLPS711X SoCs.
222 bool "TI Davinci/Keystone GPIO support"
223 default y if ARCH_DAVINCI
224 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
226 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
229 tristate "Synopsys DesignWare APB GPIO driver"
231 select GPIOLIB_IRQCHIP
233 Say Y or M here to build support for the Synopsys DesignWare APB
237 tristate "Spreadtrum EIC support"
238 depends on ARCH_SPRD || COMPILE_TEST
240 select GPIOLIB_IRQCHIP
242 Say yes here to support Spreadtrum EIC device.
245 tristate "Emma Mobile GPIO"
246 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
248 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
252 depends on ARCH_EP93XX
254 select GPIOLIB_IRQCHIP
257 tristate "Support for GPIO pins on XR17V352/354/358"
258 depends on SERIAL_8250_EXAR
261 Selecting this option will enable handling of GPIO pins present
262 on Exar XR17V352/354/358 chips.
265 bool "GE FPGA based GPIO"
269 Support for common GPIO functionality provided on some GE Single Board
272 This driver provides basic support (configure as input or output, read
273 and write pin state) for GPIO implemented in a number of GE single
276 config GPIO_FTGPIO010
277 bool "Faraday FTGPIO010 GPIO"
280 select GPIOLIB_IRQCHIP
281 default (ARCH_GEMINI || ARCH_MOXART)
283 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
284 Cortina systems Gemini platforms, Moxa ART and others.
286 config GPIO_GENERIC_PLATFORM
287 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
290 Say yes here to support basic platform_device memory-mapped GPIO controllers.
293 tristate "Aeroflex Gaisler GRGPIO support"
298 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
299 VHDL IP core library.
302 tristate "HiSilicon GPIO controller driver"
303 depends on (ARM64 && ACPI) || COMPILE_TEST
305 select GPIOLIB_IRQCHIP
307 Say Y or M here to build support for the HiSilicon GPIO controller
309 This GPIO controller supports double-edge interrupt and multi-core
313 tristate "Nintendo Wii (Hollywood) GPIO"
316 select GPIOLIB_IRQCHIP
318 Select this to support the GPIO controller of the Nintendo Wii.
323 tristate "Intel ICH GPIO"
327 Say yes here to support the GPIO functionality of a number of Intel
328 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
329 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
330 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
335 tristate "Intel IOP GPIO"
336 depends on ARCH_IOP32X || COMPILE_TEST
339 Say yes here to support the GPIO functionality of a number of Intel
340 IOP32X or IOP33X series of chips.
345 bool "Intel IXP4xx GPIO"
346 depends on ARM # For <asm/mach-types.h>
347 depends on ARCH_IXP4XX
349 select GPIOLIB_IRQCHIP
350 select IRQ_DOMAIN_HIERARCHY
352 Say yes here to support the GPIO functionality of a number of Intel
353 IXP4xx series of chips.
357 tristate "Xylon LogiCVC GPIO support"
358 depends on MFD_SYSCON && OF
360 Say yes here to support GPIO functionality of the Xylon LogiCVC
361 programmable logic block.
364 bool "Loongson-2/3 GPIO support"
365 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
367 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
370 tristate "NXP LPC18XX/43XX GPIO support"
371 default y if ARCH_LPC18XX
372 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
373 select IRQ_DOMAIN_HIERARCHY
375 Select this option to enable GPIO driver for
376 NXP LPC18XX/43XX devices.
379 tristate "NXP LPC32XX GPIO support"
380 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
382 Select this option to enable GPIO driver for
386 tristate "GPIO support for Fujitsu MB86S7x Platforms"
388 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
391 tristate "MEN 16Z127 GPIO support"
395 Say yes here to support the MEN 16Z127 GPIO Controller.
397 config GPIO_MM_LANTIQ
398 bool "Lantiq Memory mapped GPIOs"
399 depends on LANTIQ && SOC_XWAY
401 This enables support for memory mapped GPIOs on the External Bus Unit
402 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
403 created by attaching a 16-bit latch to the bus.
407 depends on PPC_MPC52xx
410 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
411 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
412 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
417 Say Y here if you're going to use hardware that connects to the
418 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
421 bool "Mediatek MT7621 GPIO Support"
422 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
425 select GPIOLIB_IRQCHIP
427 Say yes here to support the Mediatek MT7621 SoC GPIO device.
431 depends on PLAT_ORION || ARCH_MVEBU
433 select GENERIC_IRQ_CHIP
437 tristate "i.MX GPIO support"
438 depends on ARCH_MXC || COMPILE_TEST
440 select GENERIC_IRQ_CHIP
443 bool "Freescale MXS GPIO support" if COMPILE_TEST
444 depends on ARCH_MXS || COMPILE_TEST
445 default y if ARCH_MXS
447 select GENERIC_IRQ_CHIP
450 tristate "Cavium OCTEON GPIO"
451 depends on CAVIUM_OCTEON_SOC
454 Say yes here to support the on-chip GPIO lines on the OCTEON
458 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
459 default y if ARCH_OMAP
461 select GENERIC_IRQ_CHIP
462 select GPIOLIB_IRQCHIP
464 Say yes here to enable GPIO support for TI OMAP SoCs.
467 tristate "PrimeCell PL061 GPIO support"
470 select GPIOLIB_IRQCHIP
472 Say yes here to support the PrimeCell PL061 GPIO device.
474 config GPIO_PMIC_EIC_SPRD
475 tristate "Spreadtrum PMIC EIC support"
476 depends on MFD_SC27XX_PMIC || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
480 Say yes here to support Spreadtrum PMIC EIC device.
483 bool "PXA GPIO support"
484 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
486 Say yes here to support the PXA GPIO device.
489 tristate "Renesas R-Car and RZ/G GPIO support"
490 depends on ARCH_RENESAS || COMPILE_TEST
491 select GPIOLIB_IRQCHIP
493 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
496 bool "RDA Micro GPIO controller support"
497 depends on ARCH_RDA || COMPILE_TEST
500 select GPIOLIB_IRQCHIP
502 Say Y here to support RDA Micro GPIO controller.
504 config GPIO_REALTEK_OTTO
505 tristate "Realtek Otto GPIO support"
506 depends on MACH_REALTEK_RTL
507 default MACH_REALTEK_RTL
509 select GPIOLIB_IRQCHIP
511 The GPIO controller on the Otto MIPS platform supports up to two
512 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
513 are grouped in four 8-bit wide ports.
515 When built as a module, the module will be called realtek_otto_gpio.
520 A 32-bit single register GPIO fixed in/out implementation. This
521 can be used to represent any register as a set of GPIO signals.
524 tristate "Rockchip GPIO support"
525 depends on ARCH_ROCKCHIP || COMPILE_TEST
526 select GENERIC_IRQ_CHIP
527 select GPIOLIB_IRQCHIP
528 default ARCH_ROCKCHIP
530 Say yes here to support GPIO on Rockchip SoCs.
532 config GPIO_SAMA5D2_PIOBU
533 tristate "SAMA5D2 PIOBU GPIO support"
534 depends on MFD_SYSCON
538 Say yes here to use the PIOBU pins as GPIOs.
540 PIOBU pins on the SAMA5D2 can be used as GPIOs.
541 The difference from regular GPIOs is that they
542 maintain their value during backup/self-refresh.
545 bool "SiFive GPIO support"
547 select IRQ_DOMAIN_HIERARCHY
549 select GPIOLIB_IRQCHIP
552 Say yes here to support the GPIO device on SiFive SoCs.
555 tristate "SIOX GPIO support"
557 select GPIOLIB_IRQCHIP
559 Say yes here to support SIOX I/O devices. These are units connected
560 via a SIOX bus and have a number of fixed-direction I/O lines.
562 config GPIO_SNPS_CREG
563 bool "Synopsys GPIO via CREG (Control REGisters) driver"
564 depends on ARC || COMPILE_TEST
567 This driver supports GPIOs via CREG on various Synopsys SoCs.
568 This is a single-register MMIO GPIO driver for complex cases
569 where only several fields in register belong to GPIO lines and
570 each GPIO line owns a field with different length and on/off value.
572 config GPIO_SPEAR_SPICS
573 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
574 depends on PLAT_SPEAR
575 select GENERIC_IRQ_CHIP
577 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
580 tristate "Spreadtrum GPIO support"
581 depends on ARCH_SPRD || COMPILE_TEST
583 select GPIOLIB_IRQCHIP
585 Say yes here to support Spreadtrum GPIO device.
588 bool "STA2x11/ConneXt GPIO support"
589 depends on MFD_STA2X11
590 select GENERIC_IRQ_CHIP
592 Say yes here to support the STA2x11/ConneXt GPIO device.
593 The GPIO module has 128 GPIO pins with alternate functions.
596 bool "XWAY STP GPIOs"
597 depends on SOC_XWAY || COMPILE_TEST
600 This enables support for the Serial To Parallel (STP) unit found on
601 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
602 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
603 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
607 tristate "GPIO based on SYSCON"
608 depends on MFD_SYSCON && OF
610 Say yes here to support GPIO functionality though SYSCON driver.
615 select GENERIC_IRQ_CHIP
619 tristate "NVIDIA Tegra GPIO support"
621 depends on ARCH_TEGRA || COMPILE_TEST
623 select GPIOLIB_IRQCHIP
624 select IRQ_DOMAIN_HIERARCHY
626 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
629 tristate "NVIDIA Tegra186 GPIO support"
630 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
631 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
633 select GPIOLIB_IRQCHIP
634 select IRQ_DOMAIN_HIERARCHY
636 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
639 tristate "TS-4800 DIO blocks and compatibles"
641 depends on SOC_IMX51 || COMPILE_TEST
644 This driver support TS-4800 FPGA GPIO controllers.
647 tristate "Cavium ThunderX/OCTEON-TX GPIO"
648 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
650 select GPIOLIB_IRQCHIP
651 select IRQ_DOMAIN_HIERARCHY
652 select IRQ_FASTEOI_HIERARCHY_HANDLERS
654 Say yes here to support the on-chip GPIO lines on the ThunderX
655 and OCTEON-TX families of SoCs.
658 tristate "UniPhier GPIO support"
659 depends on ARCH_UNIPHIER || COMPILE_TEST
661 select IRQ_DOMAIN_HIERARCHY
663 Say yes here to support UniPhier GPIOs.
667 depends on ARCH_MXC && SOC_VF610
668 select GPIOLIB_IRQCHIP
670 Say yes here to support Vybrid vf610 GPIOs.
673 tristate "Toshiba Visconti GPIO support"
674 depends on ARCH_VISCONTI || COMPILE_TEST
676 select GPIOLIB_IRQCHIP
678 select IRQ_DOMAIN_HIERARCHY
680 Say yes here to support GPIO on Tohisba Visconti.
683 tristate "NEC VR4100 series General-purpose I/O Unit support"
684 depends on CPU_VR41XX
686 Say yes here to support the NEC VR4100 series General-purpose I/O Unit.
689 tristate "VIA VX855/VX875 GPIO"
690 depends on (X86 || COMPILE_TEST) && PCI
694 Support access to the VX855/VX875 GPIO lines through the GPIO library.
696 This driver provides common support for accessing the device.
697 Additional drivers must be enabled in order to use the
698 functionality of the device.
701 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
702 depends on MFD_WCD934X && OF_GPIO
704 This driver is to support GPIO block found on the Qualcomm Technologies
705 Inc WCD9340/WCD9341 Audio Codec.
708 bool "APM X-Gene GPIO controller support"
709 depends on ARM64 && OF_GPIO
711 This driver is to support the GPIO block within the APM X-Gene SoC
712 platform's generic flash controller. The GPIO pins are muxed with
713 the generic flash controller's address and data pins. Say yes
714 here to enable the GFC GPIO functionality.
717 tristate "APM X-Gene GPIO standby controller support"
718 depends on (ARCH_XGENE || COMPILE_TEST)
720 select GPIOLIB_IRQCHIP
721 select IRQ_DOMAIN_HIERARCHY
723 This driver supports the GPIO block within the APM X-Gene
724 Standby Domain. Say yes here to enable the GPIO functionality.
727 tristate "Xilinx GPIO support"
728 select GPIOLIB_IRQCHIP
731 Say yes here to support the Xilinx FPGA GPIO device.
734 tristate "Netlogic XLP GPIO support"
735 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
736 select GPIOLIB_IRQCHIP
738 This driver provides support for GPIO interface on Netlogic XLP MIPS64
739 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
740 XLP9XX and XLP5XX. The same GPIO controller block is also present in
741 Cavium's ThunderX2 CN99XX SoCs.
746 bool "Xtensa GPIO32 support"
748 depends on HAVE_XTENSA_GPIO32
751 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
752 and EXPSTATE (output) ports.
755 bool "LSI ZEVIO SoC memory mapped GPIOs"
756 depends on ARM && OF_GPIO
758 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
761 tristate "Xilinx Zynq GPIO support"
762 depends on ARCH_ZYNQ || ARCH_ZYNQMP
763 select GPIOLIB_IRQCHIP
765 Say yes here to support Xilinx Zynq GPIO controller.
767 config GPIO_ZYNQMP_MODEPIN
768 tristate "ZynqMP ps-mode pin GPIO configuration driver"
769 depends on ZYNQMP_FIRMWARE
770 default ZYNQMP_FIRMWARE
772 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
775 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
776 is 4-bits boot mode pins. It sets and gets the status of
777 the ps-mode pin. Every pin can be configured as input/output.
779 config GPIO_LOONGSON1
780 tristate "Loongson1 GPIO support"
781 depends on MACH_LOONGSON32
784 Say Y or M here to support GPIO on Loongson1 SoCs.
787 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
789 This option enables driver for GPIO on AMD's Fusion Controller Hub,
790 as found on G-series SOCs (e.g. GX-412TC).
792 Note: This driver doesn't register itself automatically, as it
793 needs to be provided with platform-specific configuration.
794 (See e.g. CONFIG_PCENGINES_APU2.)
797 bool "MStar MSC313 GPIO support"
798 depends on ARCH_MSTARV7
800 select GPIOLIB_IRQCHIP
801 select IRQ_DOMAIN_HIERARCHY
803 Say Y here to support the main GPIO block on MStar/SigmaStar
807 tristate "IDT 79RC3243X GPIO support"
808 depends on MIKROTIK_RB532 || COMPILE_TEST
810 select GPIOLIB_IRQCHIP
812 Select this option to enable GPIO driver for
813 IDT 79RC3243X-based devices like Mikrotik RB532.
815 To compile this driver as a module, choose M here: the module will
816 be called gpio-idt3243x.
820 menu "Port-mapped I/O GPIO drivers"
821 depends on X86 # Unconditional I/O space access
823 config GPIO_104_DIO_48E
824 tristate "ACCES 104-DIO-48E GPIO support"
827 select GPIOLIB_IRQCHIP
829 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
830 104-DIO-24E). The base port addresses for the devices may be
831 configured via the base module parameter. The interrupt line numbers
832 for the devices may be configured via the irq module parameter.
834 config GPIO_104_IDIO_16
835 tristate "ACCES 104-IDIO-16 GPIO support"
838 select GPIOLIB_IRQCHIP
840 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
841 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
842 base port addresses for the devices may be configured via the base
843 module parameter. The interrupt line numbers for the devices may be
844 configured via the irq module parameter.
846 config GPIO_104_IDI_48
847 tristate "ACCES 104-IDI-48 GPIO support"
850 select GPIOLIB_IRQCHIP
852 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
853 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
854 the devices may be configured via the base module parameter. The
855 interrupt line numbers for the devices may be configured via the irq
859 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
861 This option enables support for GPIOs found on Fintek Super-I/O
862 chips F71869, F71869A, F71882FG, F71889F and F81866.
864 To compile this driver as a module, choose M here: the module will
865 be called f7188x-gpio.
868 tristate "Diamond Systems GPIO-MM GPIO support"
872 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
874 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
875 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
876 support for these 48 channels of digital I/O.
878 The base port addresses for the devices may be configured via the base
879 array module parameter.
882 tristate "IT87xx GPIO support"
884 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
886 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
887 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
890 To compile this driver as a module, choose M here: the module will
894 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
895 depends on (X86 || COMPILE_TEST) && ACPI
897 select GPIOLIB_IRQCHIP
899 Say yes here to support GPIO interface on Intel Poulsbo SCH,
900 Intel Tunnel Creek processor, Intel Centerton processor or
901 Intel Quark X1000 SoC.
903 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
904 powered by the core power rail and are turned off during sleep
905 modes (S3 and higher). The remaining four GPIOs are powered by
906 the Intel SCH suspend power supply. These GPIOs remain
907 active during S3. The suspend-powered GPIOs can be used to wake the
908 system from the Suspend-to-RAM state.
910 The Intel Tunnel Creek processor has 5 GPIOs powered by the
911 core power rail and 9 from suspend power supply.
913 The Intel Centerton processor has a total of 30 GPIO pins.
914 Twenty-one are powered by the core power rail and 9 from the
915 suspend power supply.
917 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
918 power well and 6 from the suspend power well.
921 tristate "SMSC SCH311x SuperI/O GPIO"
923 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
924 SCH3116 "Super I/O" chipsets.
926 To compile this driver as a module, choose M here: the module will
927 be called gpio-sch311x.
930 tristate "TS-5500 DIO blocks and compatibles"
931 depends on TS5500 || COMPILE_TEST
933 This driver supports Digital I/O exposed by pin blocks found on some
934 Technologic Systems platforms. It includes, but is not limited to, 3
935 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
939 tristate "Winbond Super I/O GPIO support"
942 This option enables support for GPIOs found on Winbond Super I/O
944 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
947 You will need to provide a module parameter "gpios", or a
948 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
949 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
951 To compile this driver as a module, choose M here: the module will
952 be called gpio-winbond.
955 tristate "WinSystems WS16C48 GPIO support"
957 select GPIOLIB_IRQCHIP
959 Enables GPIO support for the WinSystems WS16C48. The base port
960 addresses for the devices may be configured via the base module
961 parameter. The interrupt line numbers for the devices may be
962 configured via the irq module parameter.
966 menu "I2C GPIO expanders"
970 tristate "ADP5588 I2C GPIO expander"
972 This option enables support for 18 GPIOs found
973 on Analog Devices ADP5588 GPIO Expanders.
975 config GPIO_ADP5588_IRQ
976 bool "Interrupt controller support for ADP5588"
977 depends on GPIO_ADP5588=y
978 select GPIOLIB_IRQCHIP
980 Say yes here to enable the adp5588 to be used as an interrupt
981 controller. It requires the driver to be built in the kernel.
984 tristate "Avionic Design N-bit GPIO expander"
986 select GPIOLIB_IRQCHIP
988 This option enables support for N GPIOs found on Avionic Design
989 I2C GPIO expanders. The register space will be extended by powers
990 of two, so the controller will need to accommodate for that. For
991 example: if a controller provides 48 pins, 6 registers will be
992 enough to represent all pins, but the driver will assume a
993 register layout for 64 pins (8 registers).
996 tristate "Gateworks PLD GPIO Expander"
999 Say yes here to provide access to the Gateworks I2C PLD GPIO
1000 Expander. This is used at least on the Cambria GW2358-4.
1003 tristate "Maxim MAX7300 GPIO expander"
1006 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1009 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1011 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1012 Port Expanders. Each IO port on these chips has a fixed role of
1013 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1014 Input and Output (designed by 'P'). The combinations are listed
1017 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1018 max7322 (4I4O), max7323 (4P4O)
1020 16 bits: max7324 (8I8O), max7325 (8P8O),
1021 max7326 (4I12O), max7327 (4P12O)
1023 Board setup code must specify the model to use, and the start
1024 number for these GPIOs.
1026 config GPIO_MAX732X_IRQ
1027 bool "Interrupt controller support for MAX732x"
1028 depends on GPIO_MAX732X=y
1029 select GPIOLIB_IRQCHIP
1031 Say yes here to enable the max732x to be used as an interrupt
1032 controller. It requires the driver to be built in the kernel.
1035 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1038 Say yes here to provide access to several register-oriented
1039 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1042 4 bits: pca9536, pca9537
1044 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1045 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1047 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1052 40 bits: pca9505, pca9698
1054 config GPIO_PCA953X_IRQ
1055 bool "Interrupt controller support for PCA953x"
1056 depends on GPIO_PCA953X
1057 select GPIOLIB_IRQCHIP
1059 Say yes here to enable the pca953x to be used as an interrupt
1063 tristate "PCA9570 4-Bit I2C GPO expander"
1065 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1067 To compile this driver as a module, choose M here: the module will
1068 be called gpio-pca9570.
1071 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1072 select GPIOLIB_IRQCHIP
1075 Say yes here to provide access to most "quasi-bidirectional" I2C
1076 GPIO expanders used for additional digital outputs or inputs.
1077 Most of these parts are from NXP, though TI is a second source for
1078 some of them. Compatible models include:
1080 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1081 pca9670, pca9672, pca9674, pca9674a,
1084 16 bits: pcf8575, pcf8575c, pca8575,
1085 pca9671, pca9673, pca9675
1087 Your board setup code will need to declare the expanders in
1088 use, and assign numbers to the GPIOs they expose. Those GPIOs
1089 can then be used from drivers and other kernel code, just like
1090 other GPIOs, but only accessible from task contexts.
1092 This driver provides an in-kernel interface to those GPIOs using
1093 platform-neutral GPIO calls.
1095 config GPIO_TPIC2810
1096 tristate "TPIC2810 8-Bit I2C GPO expander"
1098 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1100 To compile this driver as a module, choose M here: the module will
1101 be called gpio-tpic2810.
1104 tristate "Technologic Systems FPGA I2C GPIO"
1105 depends on SOC_IMX6 || COMPILE_TEST
1108 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1109 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1113 menu "MFD GPIO expanders"
1116 tristate "GPIO Support for ADP5520 PMIC"
1117 depends on PMIC_ADP5520
1119 This option enables support for on-chip GPIO found
1120 on Analog Devices ADP5520 PMICs.
1122 config GPIO_ALTERA_A10SR
1123 tristate "Altera Arria10 System Resource GPIO"
1124 depends on MFD_ALTERA_A10SR
1126 Driver for Arria10 Development Kit GPIO expansion which
1127 includes reads of pushbuttons and DIP switches as well
1131 tristate "Wolfson Microelectronics Arizona class devices"
1132 depends on MFD_ARIZONA
1134 Support for GPIOs on Wolfson Arizona class devices.
1137 tristate "ROHM BD70528 GPIO support"
1138 depends on MFD_ROHM_BD70528
1140 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1141 available on the ROHM PMIC in total. The GPIOs can also
1142 generate interrupts.
1144 This driver can also be built as a module. If so, the module
1145 will be called gpio-bd70528.
1148 tristate "ROHM BD71815 PMIC GPIO support"
1149 depends on MFD_ROHM_BD71828
1151 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1152 available on the ROHM PMIC.
1154 This driver can also be built as a module. If so, the module
1155 will be called gpio-bd71815.
1158 tristate "ROHM BD71828 GPIO support"
1159 depends on MFD_ROHM_BD71828
1161 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1162 available on the ROHM PMIC in total. The GPIOs are limited to
1163 outputs only and pins must be configured to GPIO outputs by
1164 OTP. Enable this only if you want to use these pins as outputs.
1166 This driver can also be built as a module. If so, the module
1167 will be called gpio-bd71828.
1169 config GPIO_BD9571MWV
1170 tristate "ROHM BD9571 GPIO support"
1171 depends on MFD_BD9571MWV
1173 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1174 available on the ROHM PMIC in total, both of which can also
1175 generate interrupts.
1177 This driver can also be built as a module. If so, the module
1178 will be called gpio-bd9571mwv.
1180 config GPIO_CRYSTAL_COVE
1181 tristate "GPIO support for Crystal Cove PMIC"
1182 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1183 select GPIOLIB_IRQCHIP
1185 Support for GPIO pins on Crystal Cove PMIC.
1187 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1190 This driver can also be built as a module. If so, the module will be
1191 called gpio-crystalcove.
1194 tristate "AMD CS5535/CS5536 GPIO support"
1195 depends on X86 || MIPS || COMPILE_TEST
1196 depends on MFD_CS5535
1198 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1199 can be used for quite a number of things. The CS5535/6 is found on
1200 AMD Geode and Lemote Yeeloong devices.
1205 tristate "Dialog DA9052 GPIO"
1206 depends on PMIC_DA9052
1208 Say yes here to enable the GPIO driver for the DA9052 chip.
1211 tristate "Dialog Semiconductor DA9055 GPIO"
1212 depends on MFD_DA9055
1214 Say yes here to enable the GPIO driver for the DA9055 chip.
1216 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1217 be controlled by this driver.
1219 If driver is built as a module it will be called gpio-da9055.
1222 tristate "Diolan DLN2 GPIO support"
1224 select GPIOLIB_IRQCHIP
1227 Select this option to enable GPIO driver for the Diolan DLN2
1230 This driver can also be built as a module. If so, the module
1231 will be called gpio-dln2.
1234 bool "HTC EGPIO support"
1237 This driver supports the CPLD egpio chip present on
1238 several HTC phones. It provides basic support for input
1239 pins, output pins, and IRQs.
1241 config GPIO_JANZ_TTL
1242 tristate "Janz VMOD-TTL Digital IO Module"
1243 depends on MFD_JANZ_CMODIO
1245 This enables support for the Janz VMOD-TTL Digital IO module.
1246 This driver provides support for driving the pins in output
1247 mode only. Input mode is not supported.
1250 tristate "Kontron ETX / COMexpress GPIO"
1251 depends on MFD_KEMPLD
1253 This enables support for the PLD GPIO interface on some Kontron ETX
1254 and COMexpress (ETXexpress) modules.
1256 This driver can also be built as a module. If so, the module will be
1260 tristate "TI/National Semiconductor LP3943 GPIO expander"
1261 depends on MFD_LP3943
1263 GPIO driver for LP3943 MFD.
1264 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1265 Open drain outputs are required for this usage.
1268 tristate "TI LP873X GPO"
1269 depends on MFD_TI_LP873X
1271 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1274 This driver can also be built as a module. If so, the module will be
1278 tristate "TI LP87565 GPIO"
1279 depends on MFD_TI_LP87565
1281 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1284 This driver can also be built as a module. If so, the module will be
1285 called gpio-lp87565.
1288 tristate "Cirrus Logic Madera class codecs"
1289 depends on PINCTRL_MADERA
1291 Support for GPIOs on Cirrus Logic Madera class codecs.
1293 config GPIO_MAX77620
1294 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1295 depends on MFD_MAX77620
1296 select GPIOLIB_IRQCHIP
1298 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1299 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1300 driver also provides interrupt support for each of the GPIOs.
1301 Say yes here to enable the max77620 to be used as GPIO controller.
1303 config GPIO_MAX77650
1304 tristate "Maxim MAX77650/77651 GPIO support"
1305 depends on MFD_MAX77650
1307 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1308 These chips have a single pin that can be configured as GPIO.
1311 bool "TI PALMAS series PMICs GPIO"
1312 depends on MFD_PALMAS
1314 Select this option to enable GPIO driver for the TI PALMAS
1318 bool "RICOH RC5T583 GPIO"
1319 depends on MFD_RC5T583
1321 Select this option to enable GPIO driver for the Ricoh RC5T583
1323 This driver provides the support for driving/reading the GPIO pins
1324 of RC5T583 device through standard GPIO library.
1326 config GPIO_SL28CPLD
1327 tristate "Kontron sl28cpld GPIO support"
1328 depends on MFD_SL28CPLD || COMPILE_TEST
1330 select GPIOLIB_IRQCHIP
1333 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1335 This driver can also be built as a module. If so, the module will be
1336 called gpio-sl28cpld.
1340 depends on MFD_STMPE
1342 select GPIOLIB_IRQCHIP
1344 This enables support for the GPIOs found on the STMPE I/O
1348 bool "TC3589X GPIOs"
1349 depends on MFD_TC3589X
1351 select GPIOLIB_IRQCHIP
1353 This enables support for the GPIOs found on the TC3589X
1356 config GPIO_TIMBERDALE
1357 bool "Support for timberdale GPIO IP"
1358 depends on MFD_TIMBERDALE
1360 Add support for the GPIO IP in the timberdale FPGA.
1362 config GPIO_TPS65086
1363 tristate "TI TPS65086 GPO"
1364 depends on MFD_TPS65086
1366 This driver supports the GPO on TI TPS65086x PMICs.
1368 config GPIO_TPS65218
1369 tristate "TPS65218 GPIO"
1370 depends on MFD_TPS65218
1372 Select this option to enable GPIO driver for the TPS65218
1375 config GPIO_TPS6586X
1376 bool "TPS6586X GPIO"
1377 depends on MFD_TPS6586X
1379 Select this option to enable GPIO driver for the TPS6586X
1382 config GPIO_TPS65910
1383 bool "TPS65910 GPIO"
1384 depends on MFD_TPS65910
1386 Select this option to enable GPIO driver for the TPS65910
1389 config GPIO_TPS65912
1390 tristate "TI TPS65912 GPIO"
1391 depends on MFD_TPS65912
1393 This driver supports TPS65912 GPIO chip.
1395 config GPIO_TPS68470
1396 bool "TPS68470 GPIO"
1397 depends on INTEL_SKL_INT3472
1399 Select this option to enable GPIO driver for the TPS68470
1401 There are 7 GPIOs and few sensor-related GPIOs supported
1402 by the TPS68470. While the 7 GPIOs can be configured as
1403 input or output as appropriate, the sensor related GPIOs
1404 are "output only" GPIOs.
1406 This driver config is bool, as the GPIO functionality
1407 of the TPS68470 must be available before dependent
1411 tristate "TQ-Systems QTMX86 GPIO"
1412 depends on MFD_TQMX86 || COMPILE_TEST
1413 depends on HAS_IOPORT_MAP
1414 select GPIOLIB_IRQCHIP
1416 This driver supports GPIO on the TQMX86 IO controller.
1419 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1420 depends on TWL4030_CORE
1422 Say yes here to access the GPIO signals of various multi-function
1423 power management chips from Texas Instruments.
1426 tristate "TWL6040 GPO"
1427 depends on TWL6040_CORE
1429 Say yes here to access the GPO signals of twl6040
1430 audio chip from Texas Instruments.
1433 tristate "Philips UCB1400 GPIO"
1434 depends on UCB1400_CORE
1436 This enables support for the Philips UCB1400 GPIO pins.
1437 The UCB1400 is an AC97 audio codec.
1439 config GPIO_WHISKEY_COVE
1440 tristate "GPIO support for Whiskey Cove PMIC"
1441 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1442 select GPIOLIB_IRQCHIP
1444 Support for GPIO pins on Whiskey Cove PMIC.
1446 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1449 This driver can also be built as a module. If so, the module will be
1453 tristate "WM831x GPIOs"
1454 depends on MFD_WM831X
1456 Say yes here to access the GPIO signals of WM831x power management
1457 chips from Wolfson Microelectronics.
1460 tristate "WM8350 GPIOs"
1461 depends on MFD_WM8350
1463 Say yes here to access the GPIO signals of WM8350 power management
1464 chips from Wolfson Microelectronics.
1467 tristate "WM8994 GPIOs"
1468 depends on MFD_WM8994
1470 Say yes here to access the GPIO signals of WM8994 audio hub
1471 CODECs from Wolfson Microelectronics.
1475 menu "PCI GPIO expanders"
1479 tristate "AMD 8111 GPIO driver"
1480 depends on X86 || COMPILE_TEST
1481 depends on HAS_IOPORT_MAP
1483 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1485 Note that usually system firmware/ACPI handles GPIO pins on their
1486 own and users might easily break their systems with uncareful usage
1492 tristate "BT8XX GPIO abuser"
1493 depends on VIDEO_BT848=n
1495 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1496 as a cheap PCI GPIO card.
1498 This chip can be found on Miro, Hauppauge and STB TV-cards.
1500 The card needs to be physically altered for using it as a
1501 GPIO card. For more information on how to build a GPIO card
1502 from a BT8xx TV card, see the documentation file at
1503 Documentation/driver-api/gpio/bt8xxgpio.rst
1507 config GPIO_MERRIFIELD
1508 tristate "Intel Merrifield GPIO support"
1509 depends on X86_INTEL_MID
1510 select GPIOLIB_IRQCHIP
1512 Say Y here to support Intel Merrifield GPIO.
1515 tristate "Mellanox BlueField SoC GPIO"
1516 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1519 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1522 tristate "Mellanox BlueField 2 SoC GPIO"
1523 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1526 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1529 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1530 depends on X86 || COMPILE_TEST
1531 select GENERIC_IRQ_CHIP
1533 ML7213 is companion chip for Intel Atom E6xx series.
1534 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1535 Hub) which is for IVI (In-Vehicle Infotainment) use.
1536 This driver can access the IOH's GPIO device.
1539 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1540 depends on X86_32 || MIPS || COMPILE_TEST
1541 select GENERIC_IRQ_CHIP
1543 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1544 which is an IOH (Input/Output Hub) for x86 embedded processor.
1545 This driver can access PCH GPIO device.
1547 This driver also can be used for LAPIS Semiconductor IOH (Input/
1548 Output Hub), ML7223 and ML7831.
1549 ML7223 IOH is for MP (Media Phone) use.
1550 ML7831 IOH is for general purpose use.
1551 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1552 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1554 config GPIO_PCI_IDIO_16
1555 tristate "ACCES PCI-IDIO-16 GPIO support"
1556 select GPIOLIB_IRQCHIP
1558 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1559 generated when any of the inputs change state (low to high or high to
1560 low). Input filter control is not supported by this driver, and the
1561 input filters are deactivated by this driver.
1563 config GPIO_PCIE_IDIO_24
1564 tristate "ACCES PCIe-IDIO-24 GPIO support"
1565 select GPIOLIB_IRQCHIP
1567 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1568 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1569 when any of the inputs change state (low to high or high to low).
1570 Input filter control is not supported by this driver, and the input
1571 filters are deactivated by this driver.
1574 tristate "RDC R-321x GPIO support"
1578 Support for the RDC R321x SoC GPIOs over southbridge
1579 PCI configuration space.
1581 config GPIO_SODAVILLE
1582 bool "Intel Sodaville GPIO support"
1583 depends on X86 && OF
1585 select GENERIC_IRQ_CHIP
1587 Say Y here to support Intel Sodaville GPIO.
1591 menu "SPI GPIO expanders"
1592 depends on SPI_MASTER
1595 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1598 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1599 shift registers. This driver can be used to provide access
1600 to more GPIO outputs.
1602 config GPIO_MAX3191X
1603 tristate "Maxim MAX3191x industrial serializer"
1606 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1607 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1608 chip to make 8 digital 24V inputs available via SPI. Supports
1609 CRC checksums to guard against electromagnetic interference,
1610 as well as undervoltage and overtemperature detection.
1613 tristate "Maxim MAX7301 GPIO expander"
1616 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1619 tristate "Freescale MC33880 high-side/low-side switch"
1621 SPI driver for Freescale MC33880 high-side/low-side switch.
1622 This provides GPIO interface supporting inputs and outputs.
1625 tristate "Generic parallel-in/serial-out shift register"
1627 GPIO driver for SPI compatible parallel-in/serial-out shift
1628 registers. These are input only devices.
1631 tristate "EXAR XRA1403 16-bit GPIO expander"
1634 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1637 tristate "Turris Mox Moxtet bus GPIO expander"
1640 Say yes here if you are building for the Turris Mox router.
1641 This is the driver needed for configuring the GPIOs via the Moxtet
1642 bus. For example the Mox module with SFP cage needs this driver
1643 so that phylink can use corresponding GPIOs.
1647 menu "USB GPIO expanders"
1650 config GPIO_VIPERBOARD
1651 tristate "Viperboard GPIO a & b support"
1652 depends on MFD_VIPERBOARD
1654 Say yes here to access the GPIO signals of Nano River
1655 Technologies Viperboard. There are two GPIO chips on the
1656 board: gpioa and gpiob.
1657 See viperboard API specification and Nano
1658 River Tech's viperboard.h for detailed meaning
1659 of the module parameters.
1663 menu "Virtual GPIO drivers"
1665 config GPIO_AGGREGATOR
1666 tristate "GPIO Aggregator"
1668 Say yes here to enable the GPIO Aggregator, which provides a way to
1669 aggregate existing GPIO lines into a new virtual GPIO chip.
1670 This can serve the following purposes:
1671 - Assign permissions for a collection of GPIO lines to a user,
1672 - Export a collection of GPIO lines to a virtual machine,
1673 - Provide a generic driver for a GPIO-operated device in an
1674 industrial control context, to be operated from userspace using
1675 the GPIO chardev interface.
1678 tristate "GPIO Testing Driver"
1681 This enables GPIO Testing driver, which provides a way to test GPIO
1682 subsystem through sysfs (or char device) and debugfs.
1683 User could use it through the script in
1684 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1688 tristate "VirtIO GPIO support"
1690 select GPIOLIB_IRQCHIP
1692 Say Y here to enable guest support for virtio-based GPIO controllers.
1694 These virtual GPIOs can be routed to real GPIOs or attached to
1695 simulators on the host (like QEMU).