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.
251 tristate "Airoha GPIO support"
252 depends on ARCH_AIROHA
255 select GPIOLIB_IRQCHIP
257 Say Y or M here to support the GPIO controller block on the
258 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
262 depends on ARCH_EP93XX
264 select GPIOLIB_IRQCHIP
267 tristate "Support for GPIO pins on XR17V352/354/358"
268 depends on SERIAL_8250_EXAR
271 Selecting this option will enable handling of GPIO pins present
272 on Exar XR17V352/354/358 chips.
275 bool "GE FPGA based GPIO"
279 Support for common GPIO functionality provided on some GE Single Board
282 This driver provides basic support (configure as input or output, read
283 and write pin state) for GPIO implemented in a number of GE single
286 config GPIO_FTGPIO010
287 bool "Faraday FTGPIO010 GPIO"
290 select GPIOLIB_IRQCHIP
291 default (ARCH_GEMINI || ARCH_MOXART)
293 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
294 Cortina systems Gemini platforms, Moxa ART and others.
296 config GPIO_GENERIC_PLATFORM
297 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
300 Say yes here to support basic platform_device memory-mapped GPIO controllers.
303 tristate "Aeroflex Gaisler GRGPIO support"
308 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
309 VHDL IP core library.
312 tristate "HiSilicon GPIO controller driver"
313 depends on (ARM64 && ACPI) || COMPILE_TEST
315 select GPIOLIB_IRQCHIP
317 Say Y or M here to build support for the HiSilicon GPIO controller
319 This GPIO controller supports double-edge interrupt and multi-core
323 tristate "Nintendo Wii (Hollywood) GPIO"
326 select GPIOLIB_IRQCHIP
328 Select this to support the GPIO controller of the Nintendo Wii.
333 tristate "Intel ICH GPIO"
337 Say yes here to support the GPIO functionality of a number of Intel
338 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
339 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
340 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
345 tristate "Intel IOP GPIO"
346 depends on ARCH_IOP32X || COMPILE_TEST
349 Say yes here to support the GPIO functionality of a number of Intel
350 IOP32X or IOP33X series of chips.
355 bool "Intel IXP4xx GPIO"
356 depends on ARCH_IXP4XX
358 select GPIOLIB_IRQCHIP
359 select IRQ_DOMAIN_HIERARCHY
361 Say yes here to support the GPIO functionality of a number of Intel
362 IXP4xx series of chips.
366 tristate "Xylon LogiCVC GPIO support"
367 depends on MFD_SYSCON && OF
369 Say yes here to support GPIO functionality of the Xylon LogiCVC
370 programmable logic block.
373 bool "Loongson-2/3 GPIO support"
374 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
376 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
379 tristate "NXP LPC18XX/43XX GPIO support"
380 default y if ARCH_LPC18XX
381 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
382 select IRQ_DOMAIN_HIERARCHY
384 Select this option to enable GPIO driver for
385 NXP LPC18XX/43XX devices.
388 tristate "NXP LPC32XX GPIO support"
389 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
391 Select this option to enable GPIO driver for
395 tristate "GPIO support for Fujitsu MB86S7x Platforms"
397 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
400 tristate "MEN 16Z127 GPIO support"
404 Say yes here to support the MEN 16Z127 GPIO Controller.
406 config GPIO_MM_LANTIQ
407 bool "Lantiq Memory mapped GPIOs"
408 depends on LANTIQ && SOC_XWAY
410 This enables support for memory mapped GPIOs on the External Bus Unit
411 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
412 created by attaching a 16-bit latch to the bus.
416 depends on PPC_MPC52xx
419 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
420 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
421 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
426 Say Y here if you're going to use hardware that connects to the
427 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
430 bool "Mediatek MT7621 GPIO Support"
431 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
434 select GPIOLIB_IRQCHIP
436 Say yes here to support the Mediatek MT7621 SoC GPIO device.
440 depends on PLAT_ORION || ARCH_MVEBU
442 select GENERIC_IRQ_CHIP
446 tristate "i.MX GPIO support"
447 depends on ARCH_MXC || COMPILE_TEST
449 select GENERIC_IRQ_CHIP
452 bool "Freescale MXS GPIO support" if COMPILE_TEST
453 depends on ARCH_MXS || COMPILE_TEST
454 default y if ARCH_MXS
456 select GENERIC_IRQ_CHIP
459 tristate "Cavium OCTEON GPIO"
460 depends on CAVIUM_OCTEON_SOC
463 Say yes here to support the on-chip GPIO lines on the OCTEON
467 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
468 default y if ARCH_OMAP
470 select GENERIC_IRQ_CHIP
471 select GPIOLIB_IRQCHIP
473 Say yes here to enable GPIO support for TI OMAP SoCs.
476 tristate "PrimeCell PL061 GPIO support"
479 select GPIOLIB_IRQCHIP
481 Say yes here to support the PrimeCell PL061 GPIO device.
483 config GPIO_PMIC_EIC_SPRD
484 tristate "Spreadtrum PMIC EIC support"
485 depends on MFD_SC27XX_PMIC || COMPILE_TEST
487 select GPIOLIB_IRQCHIP
489 Say yes here to support Spreadtrum PMIC EIC device.
492 bool "PXA GPIO support"
493 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
495 Say yes here to support the PXA GPIO device.
498 tristate "Renesas R-Car and RZ/G GPIO support"
499 depends on ARCH_RENESAS || COMPILE_TEST
500 select GPIOLIB_IRQCHIP
502 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
505 bool "RDA Micro GPIO controller support"
506 depends on ARCH_RDA || COMPILE_TEST
509 select GPIOLIB_IRQCHIP
511 Say Y here to support RDA Micro GPIO controller.
513 config GPIO_REALTEK_OTTO
514 tristate "Realtek Otto GPIO support"
515 depends on MACH_REALTEK_RTL
516 default MACH_REALTEK_RTL
518 select GPIOLIB_IRQCHIP
520 The GPIO controller on the Otto MIPS platform supports up to two
521 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
522 are grouped in four 8-bit wide ports.
524 When built as a module, the module will be called realtek_otto_gpio.
529 A 32-bit single register GPIO fixed in/out implementation. This
530 can be used to represent any register as a set of GPIO signals.
533 tristate "Rockchip GPIO support"
534 depends on ARCH_ROCKCHIP || COMPILE_TEST
535 select GENERIC_IRQ_CHIP
536 select GPIOLIB_IRQCHIP
537 default ARCH_ROCKCHIP
539 Say yes here to support GPIO on Rockchip SoCs.
541 config GPIO_SAMA5D2_PIOBU
542 tristate "SAMA5D2 PIOBU GPIO support"
543 depends on MFD_SYSCON
547 Say yes here to use the PIOBU pins as GPIOs.
549 PIOBU pins on the SAMA5D2 can be used as GPIOs.
550 The difference from regular GPIOs is that they
551 maintain their value during backup/self-refresh.
554 bool "SiFive GPIO support"
556 select IRQ_DOMAIN_HIERARCHY
558 select GPIOLIB_IRQCHIP
561 Say yes here to support the GPIO device on SiFive SoCs.
564 tristate "SIOX GPIO support"
566 select GPIOLIB_IRQCHIP
568 Say yes here to support SIOX I/O devices. These are units connected
569 via a SIOX bus and have a number of fixed-direction I/O lines.
571 config GPIO_SNPS_CREG
572 bool "Synopsys GPIO via CREG (Control REGisters) driver"
573 depends on ARC || COMPILE_TEST
576 This driver supports GPIOs via CREG on various Synopsys SoCs.
577 This is a single-register MMIO GPIO driver for complex cases
578 where only several fields in register belong to GPIO lines and
579 each GPIO line owns a field with different length and on/off value.
581 config GPIO_SPEAR_SPICS
582 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
583 depends on PLAT_SPEAR
584 select GENERIC_IRQ_CHIP
586 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
589 tristate "Spreadtrum GPIO support"
590 depends on ARCH_SPRD || COMPILE_TEST
592 select GPIOLIB_IRQCHIP
594 Say yes here to support Spreadtrum GPIO device.
597 bool "STA2x11/ConneXt GPIO support"
598 depends on MFD_STA2X11
599 select GENERIC_IRQ_CHIP
601 Say yes here to support the STA2x11/ConneXt GPIO device.
602 The GPIO module has 128 GPIO pins with alternate functions.
605 bool "XWAY STP GPIOs"
606 depends on SOC_XWAY || COMPILE_TEST
609 This enables support for the Serial To Parallel (STP) unit found on
610 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
611 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
612 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
616 tristate "GPIO based on SYSCON"
617 depends on MFD_SYSCON && OF
619 Say yes here to support GPIO functionality though SYSCON driver.
624 select GENERIC_IRQ_CHIP
628 tristate "NVIDIA Tegra GPIO support"
630 depends on ARCH_TEGRA || COMPILE_TEST
632 select GPIOLIB_IRQCHIP
633 select IRQ_DOMAIN_HIERARCHY
635 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
638 tristate "NVIDIA Tegra186 GPIO support"
639 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
640 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
642 select GPIOLIB_IRQCHIP
643 select IRQ_DOMAIN_HIERARCHY
645 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
648 tristate "TS-4800 DIO blocks and compatibles"
650 depends on SOC_IMX51 || COMPILE_TEST
653 This driver support TS-4800 FPGA GPIO controllers.
656 tristate "Cavium ThunderX/OCTEON-TX GPIO"
657 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
659 select GPIOLIB_IRQCHIP
660 select IRQ_DOMAIN_HIERARCHY
661 select IRQ_FASTEOI_HIERARCHY_HANDLERS
663 Say yes here to support the on-chip GPIO lines on the ThunderX
664 and OCTEON-TX families of SoCs.
667 tristate "UniPhier GPIO support"
668 depends on ARCH_UNIPHIER || COMPILE_TEST
670 select IRQ_DOMAIN_HIERARCHY
672 Say yes here to support UniPhier GPIOs.
676 depends on ARCH_MXC && SOC_VF610
677 select GPIOLIB_IRQCHIP
679 Say yes here to support Vybrid vf610 GPIOs.
682 tristate "Toshiba Visconti GPIO support"
683 depends on ARCH_VISCONTI || COMPILE_TEST
685 select GPIOLIB_IRQCHIP
687 select IRQ_DOMAIN_HIERARCHY
689 Say yes here to support GPIO on Tohisba Visconti.
692 tristate "NEC VR4100 series General-purpose I/O Unit support"
693 depends on CPU_VR41XX
695 Say yes here to support the NEC VR4100 series General-purpose I/O Unit.
698 tristate "VIA VX855/VX875 GPIO"
699 depends on (X86 || COMPILE_TEST) && PCI
703 Support access to the VX855/VX875 GPIO lines through the GPIO library.
705 This driver provides common support for accessing the device.
706 Additional drivers must be enabled in order to use the
707 functionality of the device.
710 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
711 depends on MFD_WCD934X && OF_GPIO
713 This driver is to support GPIO block found on the Qualcomm Technologies
714 Inc WCD9340/WCD9341 Audio Codec.
717 bool "APM X-Gene GPIO controller support"
718 depends on ARM64 && OF_GPIO
720 This driver is to support the GPIO block within the APM X-Gene SoC
721 platform's generic flash controller. The GPIO pins are muxed with
722 the generic flash controller's address and data pins. Say yes
723 here to enable the GFC GPIO functionality.
726 tristate "APM X-Gene GPIO standby controller support"
727 depends on (ARCH_XGENE || COMPILE_TEST)
729 select GPIOLIB_IRQCHIP
730 select IRQ_DOMAIN_HIERARCHY
732 This driver supports the GPIO block within the APM X-Gene
733 Standby Domain. Say yes here to enable the GPIO functionality.
736 tristate "Xilinx GPIO support"
737 select GPIOLIB_IRQCHIP
740 Say yes here to support the Xilinx FPGA GPIO device.
743 tristate "Cavium ThunderX2 GPIO support"
744 depends on ARCH_THUNDER2 || COMPILE_TEST
745 select GPIOLIB_IRQCHIP
747 This driver provides support for GPIO interface on Cavium's ThunderX2
748 CN99XX SoCs (Originally from Netlogic XLP).
753 bool "Xtensa GPIO32 support"
755 depends on HAVE_XTENSA_GPIO32
758 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
759 and EXPSTATE (output) ports.
762 bool "LSI ZEVIO SoC memory mapped GPIOs"
763 depends on ARM && OF_GPIO
765 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
768 tristate "Xilinx Zynq GPIO support"
769 depends on ARCH_ZYNQ || ARCH_ZYNQMP
770 select GPIOLIB_IRQCHIP
772 Say yes here to support Xilinx Zynq GPIO controller.
774 config GPIO_ZYNQMP_MODEPIN
775 tristate "ZynqMP ps-mode pin GPIO configuration driver"
776 depends on ZYNQMP_FIRMWARE
777 default ZYNQMP_FIRMWARE
779 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
782 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
783 is 4-bits boot mode pins. It sets and gets the status of
784 the ps-mode pin. Every pin can be configured as input/output.
786 config GPIO_LOONGSON1
787 tristate "Loongson1 GPIO support"
788 depends on MACH_LOONGSON32
791 Say Y or M here to support GPIO on Loongson1 SoCs.
794 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
796 This option enables driver for GPIO on AMD's Fusion Controller Hub,
797 as found on G-series SOCs (e.g. GX-412TC).
799 Note: This driver doesn't register itself automatically, as it
800 needs to be provided with platform-specific configuration.
801 (See e.g. CONFIG_PCENGINES_APU2.)
804 bool "MStar MSC313 GPIO support"
805 depends on ARCH_MSTARV7
807 select GPIOLIB_IRQCHIP
808 select IRQ_DOMAIN_HIERARCHY
810 Say Y here to support the main GPIO block on MStar/SigmaStar
814 tristate "IDT 79RC3243X GPIO support"
815 depends on MIKROTIK_RB532 || COMPILE_TEST
817 select GPIOLIB_IRQCHIP
819 Select this option to enable GPIO driver for
820 IDT 79RC3243X-based devices like Mikrotik RB532.
822 To compile this driver as a module, choose M here: the module will
823 be called gpio-idt3243x.
827 menu "Port-mapped I/O GPIO drivers"
828 depends on X86 # Unconditional I/O space access
830 config GPIO_104_DIO_48E
831 tristate "ACCES 104-DIO-48E GPIO support"
834 select GPIOLIB_IRQCHIP
836 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
837 104-DIO-24E). The base port addresses for the devices may be
838 configured via the base module parameter. The interrupt line numbers
839 for the devices may be configured via the irq module parameter.
841 config GPIO_104_IDIO_16
842 tristate "ACCES 104-IDIO-16 GPIO support"
845 select GPIOLIB_IRQCHIP
847 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
848 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
849 base port addresses for the devices may be configured via the base
850 module parameter. The interrupt line numbers for the devices may be
851 configured via the irq module parameter.
853 config GPIO_104_IDI_48
854 tristate "ACCES 104-IDI-48 GPIO support"
857 select GPIOLIB_IRQCHIP
859 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
860 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
861 the devices may be configured via the base module parameter. The
862 interrupt line numbers for the devices may be configured via the irq
866 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
868 This option enables support for GPIOs found on Fintek Super-I/O
869 chips F71869, F71869A, F71882FG, F71889F and F81866.
871 To compile this driver as a module, choose M here: the module will
872 be called f7188x-gpio.
875 tristate "Diamond Systems GPIO-MM GPIO support"
879 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
881 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
882 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
883 support for these 48 channels of digital I/O.
885 The base port addresses for the devices may be configured via the base
886 array module parameter.
889 tristate "IT87xx GPIO support"
891 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
893 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
894 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
897 To compile this driver as a module, choose M here: the module will
901 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
902 depends on (X86 || COMPILE_TEST) && ACPI
904 select GPIOLIB_IRQCHIP
906 Say yes here to support GPIO interface on Intel Poulsbo SCH,
907 Intel Tunnel Creek processor, Intel Centerton processor or
908 Intel Quark X1000 SoC.
910 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
911 powered by the core power rail and are turned off during sleep
912 modes (S3 and higher). The remaining four GPIOs are powered by
913 the Intel SCH suspend power supply. These GPIOs remain
914 active during S3. The suspend-powered GPIOs can be used to wake the
915 system from the Suspend-to-RAM state.
917 The Intel Tunnel Creek processor has 5 GPIOs powered by the
918 core power rail and 9 from suspend power supply.
920 The Intel Centerton processor has a total of 30 GPIO pins.
921 Twenty-one are powered by the core power rail and 9 from the
922 suspend power supply.
924 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
925 power well and 6 from the suspend power well.
928 tristate "SMSC SCH311x SuperI/O GPIO"
930 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
931 SCH3116 "Super I/O" chipsets.
933 To compile this driver as a module, choose M here: the module will
934 be called gpio-sch311x.
937 tristate "TS-5500 DIO blocks and compatibles"
938 depends on TS5500 || COMPILE_TEST
940 This driver supports Digital I/O exposed by pin blocks found on some
941 Technologic Systems platforms. It includes, but is not limited to, 3
942 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
946 tristate "Winbond Super I/O GPIO support"
949 This option enables support for GPIOs found on Winbond Super I/O
951 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
954 You will need to provide a module parameter "gpios", or a
955 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
956 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
958 To compile this driver as a module, choose M here: the module will
959 be called gpio-winbond.
962 tristate "WinSystems WS16C48 GPIO support"
964 select GPIOLIB_IRQCHIP
966 Enables GPIO support for the WinSystems WS16C48. The base port
967 addresses for the devices may be configured via the base module
968 parameter. The interrupt line numbers for the devices may be
969 configured via the irq module parameter.
973 menu "I2C GPIO expanders"
977 tristate "ADP5588 I2C GPIO expander"
979 This option enables support for 18 GPIOs found
980 on Analog Devices ADP5588 GPIO Expanders.
982 config GPIO_ADP5588_IRQ
983 bool "Interrupt controller support for ADP5588"
984 depends on GPIO_ADP5588=y
985 select GPIOLIB_IRQCHIP
987 Say yes here to enable the adp5588 to be used as an interrupt
988 controller. It requires the driver to be built in the kernel.
991 tristate "Avionic Design N-bit GPIO expander"
993 select GPIOLIB_IRQCHIP
995 This option enables support for N GPIOs found on Avionic Design
996 I2C GPIO expanders. The register space will be extended by powers
997 of two, so the controller will need to accommodate for that. For
998 example: if a controller provides 48 pins, 6 registers will be
999 enough to represent all pins, but the driver will assume a
1000 register layout for 64 pins (8 registers).
1003 tristate "Gateworks PLD GPIO Expander"
1006 Say yes here to provide access to the Gateworks I2C PLD GPIO
1007 Expander. This is used at least on the Cambria GW2358-4.
1010 tristate "Maxim MAX7300 GPIO expander"
1013 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1016 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1018 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1019 Port Expanders. Each IO port on these chips has a fixed role of
1020 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1021 Input and Output (designed by 'P'). The combinations are listed
1024 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1025 max7322 (4I4O), max7323 (4P4O)
1027 16 bits: max7324 (8I8O), max7325 (8P8O),
1028 max7326 (4I12O), max7327 (4P12O)
1030 Board setup code must specify the model to use, and the start
1031 number for these GPIOs.
1033 config GPIO_MAX732X_IRQ
1034 bool "Interrupt controller support for MAX732x"
1035 depends on GPIO_MAX732X=y
1036 select GPIOLIB_IRQCHIP
1038 Say yes here to enable the max732x to be used as an interrupt
1039 controller. It requires the driver to be built in the kernel.
1042 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1045 Say yes here to provide access to several register-oriented
1046 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1049 4 bits: pca9536, pca9537
1051 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1052 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1054 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1059 40 bits: pca9505, pca9698
1061 config GPIO_PCA953X_IRQ
1062 bool "Interrupt controller support for PCA953x"
1063 depends on GPIO_PCA953X
1064 select GPIOLIB_IRQCHIP
1066 Say yes here to enable the pca953x to be used as an interrupt
1070 tristate "PCA9570 4-Bit I2C GPO expander"
1072 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1074 To compile this driver as a module, choose M here: the module will
1075 be called gpio-pca9570.
1078 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1079 select GPIOLIB_IRQCHIP
1082 Say yes here to provide access to most "quasi-bidirectional" I2C
1083 GPIO expanders used for additional digital outputs or inputs.
1084 Most of these parts are from NXP, though TI is a second source for
1085 some of them. Compatible models include:
1087 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1088 pca9670, pca9672, pca9674, pca9674a,
1091 16 bits: pcf8575, pcf8575c, pca8575,
1092 pca9671, pca9673, pca9675
1094 Your board setup code will need to declare the expanders in
1095 use, and assign numbers to the GPIOs they expose. Those GPIOs
1096 can then be used from drivers and other kernel code, just like
1097 other GPIOs, but only accessible from task contexts.
1099 This driver provides an in-kernel interface to those GPIOs using
1100 platform-neutral GPIO calls.
1102 config GPIO_TPIC2810
1103 tristate "TPIC2810 8-Bit I2C GPO expander"
1105 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1107 To compile this driver as a module, choose M here: the module will
1108 be called gpio-tpic2810.
1111 tristate "Technologic Systems FPGA I2C GPIO"
1112 depends on SOC_IMX6 || COMPILE_TEST
1115 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1116 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1120 menu "MFD GPIO expanders"
1123 tristate "GPIO Support for ADP5520 PMIC"
1124 depends on PMIC_ADP5520
1126 This option enables support for on-chip GPIO found
1127 on Analog Devices ADP5520 PMICs.
1129 config GPIO_ALTERA_A10SR
1130 tristate "Altera Arria10 System Resource GPIO"
1131 depends on MFD_ALTERA_A10SR
1133 Driver for Arria10 Development Kit GPIO expansion which
1134 includes reads of pushbuttons and DIP switches as well
1138 tristate "Wolfson Microelectronics Arizona class devices"
1139 depends on MFD_ARIZONA
1141 Support for GPIOs on Wolfson Arizona class devices.
1144 tristate "ROHM BD71815 PMIC GPIO support"
1145 depends on MFD_ROHM_BD71828
1147 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1148 available on the ROHM PMIC.
1150 This driver can also be built as a module. If so, the module
1151 will be called gpio-bd71815.
1154 tristate "ROHM BD71828 GPIO support"
1155 depends on MFD_ROHM_BD71828
1157 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1158 available on the ROHM PMIC in total. The GPIOs are limited to
1159 outputs only and pins must be configured to GPIO outputs by
1160 OTP. Enable this only if you want to use these pins as outputs.
1162 This driver can also be built as a module. If so, the module
1163 will be called gpio-bd71828.
1165 config GPIO_BD9571MWV
1166 tristate "ROHM BD9571 GPIO support"
1167 depends on MFD_BD9571MWV
1169 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1170 available on the ROHM PMIC in total, both of which can also
1171 generate interrupts.
1173 This driver can also be built as a module. If so, the module
1174 will be called gpio-bd9571mwv.
1176 config GPIO_CRYSTAL_COVE
1177 tristate "GPIO support for Crystal Cove PMIC"
1178 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1179 select GPIOLIB_IRQCHIP
1181 Support for GPIO pins on Crystal Cove PMIC.
1183 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1186 This driver can also be built as a module. If so, the module will be
1187 called gpio-crystalcove.
1190 tristate "AMD CS5535/CS5536 GPIO support"
1191 depends on X86 || MIPS || COMPILE_TEST
1192 depends on MFD_CS5535
1194 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1195 can be used for quite a number of things. The CS5535/6 is found on
1196 AMD Geode and Lemote Yeeloong devices.
1201 tristate "Dialog DA9052 GPIO"
1202 depends on PMIC_DA9052
1204 Say yes here to enable the GPIO driver for the DA9052 chip.
1207 tristate "Dialog Semiconductor DA9055 GPIO"
1208 depends on MFD_DA9055
1210 Say yes here to enable the GPIO driver for the DA9055 chip.
1212 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1213 be controlled by this driver.
1215 If driver is built as a module it will be called gpio-da9055.
1218 tristate "Diolan DLN2 GPIO support"
1220 select GPIOLIB_IRQCHIP
1223 Select this option to enable GPIO driver for the Diolan DLN2
1226 This driver can also be built as a module. If so, the module
1227 will be called gpio-dln2.
1230 bool "HTC EGPIO support"
1233 This driver supports the CPLD egpio chip present on
1234 several HTC phones. It provides basic support for input
1235 pins, output pins, and IRQs.
1237 config GPIO_JANZ_TTL
1238 tristate "Janz VMOD-TTL Digital IO Module"
1239 depends on MFD_JANZ_CMODIO
1241 This enables support for the Janz VMOD-TTL Digital IO module.
1242 This driver provides support for driving the pins in output
1243 mode only. Input mode is not supported.
1246 tristate "Kontron ETX / COMexpress GPIO"
1247 depends on MFD_KEMPLD
1249 This enables support for the PLD GPIO interface on some Kontron ETX
1250 and COMexpress (ETXexpress) modules.
1252 This driver can also be built as a module. If so, the module will be
1256 tristate "TI/National Semiconductor LP3943 GPIO expander"
1257 depends on MFD_LP3943
1259 GPIO driver for LP3943 MFD.
1260 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1261 Open drain outputs are required for this usage.
1264 tristate "TI LP873X GPO"
1265 depends on MFD_TI_LP873X
1267 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1270 This driver can also be built as a module. If so, the module will be
1274 tristate "TI LP87565 GPIO"
1275 depends on MFD_TI_LP87565
1277 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1280 This driver can also be built as a module. If so, the module will be
1281 called gpio-lp87565.
1284 tristate "Cirrus Logic Madera class codecs"
1285 depends on PINCTRL_MADERA
1287 Support for GPIOs on Cirrus Logic Madera class codecs.
1289 config GPIO_MAX77620
1290 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1291 depends on MFD_MAX77620
1292 select GPIOLIB_IRQCHIP
1294 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1295 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1296 driver also provides interrupt support for each of the GPIOs.
1297 Say yes here to enable the max77620 to be used as GPIO controller.
1299 config GPIO_MAX77650
1300 tristate "Maxim MAX77650/77651 GPIO support"
1301 depends on MFD_MAX77650
1303 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1304 These chips have a single pin that can be configured as GPIO.
1307 bool "TI PALMAS series PMICs GPIO"
1308 depends on MFD_PALMAS
1310 Select this option to enable GPIO driver for the TI PALMAS
1314 bool "RICOH RC5T583 GPIO"
1315 depends on MFD_RC5T583
1317 Select this option to enable GPIO driver for the Ricoh RC5T583
1319 This driver provides the support for driving/reading the GPIO pins
1320 of RC5T583 device through standard GPIO library.
1322 config GPIO_SL28CPLD
1323 tristate "Kontron sl28cpld GPIO support"
1324 depends on MFD_SL28CPLD || COMPILE_TEST
1326 select GPIOLIB_IRQCHIP
1329 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1331 This driver can also be built as a module. If so, the module will be
1332 called gpio-sl28cpld.
1336 depends on MFD_STMPE
1338 select GPIOLIB_IRQCHIP
1340 This enables support for the GPIOs found on the STMPE I/O
1344 bool "TC3589X GPIOs"
1345 depends on MFD_TC3589X
1347 select GPIOLIB_IRQCHIP
1349 This enables support for the GPIOs found on the TC3589X
1352 config GPIO_TIMBERDALE
1353 bool "Support for timberdale GPIO IP"
1354 depends on MFD_TIMBERDALE
1356 Add support for the GPIO IP in the timberdale FPGA.
1358 config GPIO_TN48M_CPLD
1359 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1360 depends on MFD_TN48M_CPLD
1363 This enables support for the GPIOs found on the Delta
1364 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1365 they are input-only or output-only type.
1367 This driver can also be built as a module. If so, the
1368 module will be called gpio-tn48m.
1370 config GPIO_TPS65086
1371 tristate "TI TPS65086 GPO"
1372 depends on MFD_TPS65086
1374 This driver supports the GPO on TI TPS65086x PMICs.
1376 config GPIO_TPS65218
1377 tristate "TPS65218 GPIO"
1378 depends on MFD_TPS65218
1380 Select this option to enable GPIO driver for the TPS65218
1383 config GPIO_TPS6586X
1384 bool "TPS6586X GPIO"
1385 depends on MFD_TPS6586X
1387 Select this option to enable GPIO driver for the TPS6586X
1390 config GPIO_TPS65910
1391 bool "TPS65910 GPIO"
1392 depends on MFD_TPS65910
1394 Select this option to enable GPIO driver for the TPS65910
1397 config GPIO_TPS65912
1398 tristate "TI TPS65912 GPIO"
1399 depends on MFD_TPS65912
1401 This driver supports TPS65912 GPIO chip.
1403 config GPIO_TPS68470
1404 tristate "TPS68470 GPIO"
1405 depends on INTEL_SKL_INT3472
1407 Select this option to enable GPIO driver for the TPS68470
1409 There are 7 GPIOs and few sensor-related GPIOs supported
1410 by the TPS68470. While the 7 GPIOs can be configured as
1411 input or output as appropriate, the sensor related GPIOs
1412 are "output only" GPIOs.
1415 tristate "TQ-Systems QTMX86 GPIO"
1416 depends on MFD_TQMX86 || COMPILE_TEST
1417 depends on HAS_IOPORT_MAP
1418 select GPIOLIB_IRQCHIP
1420 This driver supports GPIO on the TQMX86 IO controller.
1423 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1424 depends on TWL4030_CORE
1426 Say yes here to access the GPIO signals of various multi-function
1427 power management chips from Texas Instruments.
1430 tristate "TWL6040 GPO"
1431 depends on TWL6040_CORE
1433 Say yes here to access the GPO signals of twl6040
1434 audio chip from Texas Instruments.
1437 tristate "Philips UCB1400 GPIO"
1438 depends on UCB1400_CORE
1440 This enables support for the Philips UCB1400 GPIO pins.
1441 The UCB1400 is an AC97 audio codec.
1443 config GPIO_WHISKEY_COVE
1444 tristate "GPIO support for Whiskey Cove PMIC"
1445 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1446 select GPIOLIB_IRQCHIP
1448 Support for GPIO pins on Whiskey Cove PMIC.
1450 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1453 This driver can also be built as a module. If so, the module will be
1457 tristate "WM831x GPIOs"
1458 depends on MFD_WM831X
1460 Say yes here to access the GPIO signals of WM831x power management
1461 chips from Wolfson Microelectronics.
1464 tristate "WM8350 GPIOs"
1465 depends on MFD_WM8350
1467 Say yes here to access the GPIO signals of WM8350 power management
1468 chips from Wolfson Microelectronics.
1471 tristate "WM8994 GPIOs"
1472 depends on MFD_WM8994
1474 Say yes here to access the GPIO signals of WM8994 audio hub
1475 CODECs from Wolfson Microelectronics.
1479 menu "PCI GPIO expanders"
1483 tristate "AMD 8111 GPIO driver"
1484 depends on X86 || COMPILE_TEST
1485 depends on HAS_IOPORT_MAP
1487 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1489 Note that usually system firmware/ACPI handles GPIO pins on their
1490 own and users might easily break their systems with uncareful usage
1496 tristate "BT8XX GPIO abuser"
1497 depends on VIDEO_BT848=n
1499 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1500 as a cheap PCI GPIO card.
1502 This chip can be found on Miro, Hauppauge and STB TV-cards.
1504 The card needs to be physically altered for using it as a
1505 GPIO card. For more information on how to build a GPIO card
1506 from a BT8xx TV card, see the documentation file at
1507 Documentation/driver-api/gpio/bt8xxgpio.rst
1511 config GPIO_MERRIFIELD
1512 tristate "Intel Merrifield GPIO support"
1513 depends on X86_INTEL_MID
1514 select GPIOLIB_IRQCHIP
1516 Say Y here to support Intel Merrifield GPIO.
1519 tristate "Mellanox BlueField SoC GPIO"
1520 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1523 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1526 tristate "Mellanox BlueField 2 SoC GPIO"
1527 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1530 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1533 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1534 depends on X86 || COMPILE_TEST
1535 select GENERIC_IRQ_CHIP
1537 ML7213 is companion chip for Intel Atom E6xx series.
1538 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1539 Hub) which is for IVI (In-Vehicle Infotainment) use.
1540 This driver can access the IOH's GPIO device.
1543 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1544 depends on X86_32 || MIPS || COMPILE_TEST
1545 select GENERIC_IRQ_CHIP
1547 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1548 which is an IOH (Input/Output Hub) for x86 embedded processor.
1549 This driver can access PCH GPIO device.
1551 This driver also can be used for LAPIS Semiconductor IOH (Input/
1552 Output Hub), ML7223 and ML7831.
1553 ML7223 IOH is for MP (Media Phone) use.
1554 ML7831 IOH is for general purpose use.
1555 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1556 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1558 config GPIO_PCI_IDIO_16
1559 tristate "ACCES PCI-IDIO-16 GPIO support"
1560 select GPIOLIB_IRQCHIP
1562 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1563 generated when any of the inputs change state (low to high or high to
1564 low). Input filter control is not supported by this driver, and the
1565 input filters are deactivated by this driver.
1567 config GPIO_PCIE_IDIO_24
1568 tristate "ACCES PCIe-IDIO-24 GPIO support"
1569 select GPIOLIB_IRQCHIP
1571 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1572 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1573 when any of the inputs change state (low to high or high to low).
1574 Input filter control is not supported by this driver, and the input
1575 filters are deactivated by this driver.
1578 tristate "RDC R-321x GPIO support"
1582 Support for the RDC R321x SoC GPIOs over southbridge
1583 PCI configuration space.
1585 config GPIO_SODAVILLE
1586 bool "Intel Sodaville GPIO support"
1587 depends on X86 && OF
1589 select GENERIC_IRQ_CHIP
1591 Say Y here to support Intel Sodaville GPIO.
1595 menu "SPI GPIO expanders"
1596 depends on SPI_MASTER
1599 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1602 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1603 shift registers. This driver can be used to provide access
1604 to more GPIO outputs.
1606 config GPIO_MAX3191X
1607 tristate "Maxim MAX3191x industrial serializer"
1610 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1611 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1612 chip to make 8 digital 24V inputs available via SPI. Supports
1613 CRC checksums to guard against electromagnetic interference,
1614 as well as undervoltage and overtemperature detection.
1617 tristate "Maxim MAX7301 GPIO expander"
1620 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1623 tristate "Freescale MC33880 high-side/low-side switch"
1625 SPI driver for Freescale MC33880 high-side/low-side switch.
1626 This provides GPIO interface supporting inputs and outputs.
1629 tristate "Generic parallel-in/serial-out shift register"
1631 GPIO driver for SPI compatible parallel-in/serial-out shift
1632 registers. These are input only devices.
1635 tristate "EXAR XRA1403 16-bit GPIO expander"
1638 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1641 tristate "Turris Mox Moxtet bus GPIO expander"
1644 Say yes here if you are building for the Turris Mox router.
1645 This is the driver needed for configuring the GPIOs via the Moxtet
1646 bus. For example the Mox module with SFP cage needs this driver
1647 so that phylink can use corresponding GPIOs.
1651 menu "USB GPIO expanders"
1654 config GPIO_VIPERBOARD
1655 tristate "Viperboard GPIO a & b support"
1656 depends on MFD_VIPERBOARD
1658 Say yes here to access the GPIO signals of Nano River
1659 Technologies Viperboard. There are two GPIO chips on the
1660 board: gpioa and gpiob.
1661 See viperboard API specification and Nano
1662 River Tech's viperboard.h for detailed meaning
1663 of the module parameters.
1667 menu "Virtual GPIO drivers"
1669 config GPIO_AGGREGATOR
1670 tristate "GPIO Aggregator"
1672 Say yes here to enable the GPIO Aggregator, which provides a way to
1673 aggregate existing GPIO lines into a new virtual GPIO chip.
1674 This can serve the following purposes:
1675 - Assign permissions for a collection of GPIO lines to a user,
1676 - Export a collection of GPIO lines to a virtual machine,
1677 - Provide a generic driver for a GPIO-operated device in an
1678 industrial control context, to be operated from userspace using
1679 the GPIO chardev interface.
1682 tristate "GPIO Testing Driver"
1685 This enables GPIO Testing driver, which provides a way to test GPIO
1686 subsystem through sysfs (or char device) and debugfs.
1687 User could use it through the script in
1688 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1692 tristate "VirtIO GPIO support"
1694 select GPIOLIB_IRQCHIP
1696 Say Y here to enable guest support for virtio-based GPIO controllers.
1698 These virtual GPIOs can be routed to real GPIOs or attached to
1699 simulators on the host (like QEMU).
1702 tristate "GPIO Simulator Module"
1706 This enables the GPIO simulator - a configfs-based GPIO testing