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
115 Enables support for the idio-16 library functions. The idio-16 library
116 provides functions to facilitate communication with devices within the
117 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
119 If built as a module its name will be gpio-idio-16.
121 menu "Memory mapped GPIO drivers"
124 config GPIO_74XX_MMIO
125 tristate "GPIO driver for 74xx-ICs with MMIO access"
129 Say yes here to support GPIO functionality for 74xx-compatible ICs
130 with MMIO access. Compatible models include:
131 1 bit: 741G125 (Input), 741G74 (Output)
132 2 bits: 742G125 (Input), 7474 (Output)
133 4 bits: 74125 (Input), 74175 (Output)
134 6 bits: 74365 (Input), 74174 (Output)
135 8 bits: 74244 (Input), 74273 (Output)
136 16 bits: 741624 (Input), 7416374 (Output)
139 tristate "Altera GPIO"
141 select GPIOLIB_IRQCHIP
143 Say Y or M here to build support for the Altera PIO device.
145 If driver is built as a module it will be called gpio-altera.
148 tristate "AMD Promontory GPIO support"
152 Driver for GPIO functionality on Promontory IOHub.
153 Requires ACPI ASL code to enumerate as a platform device.
156 tristate "Aspeed GPIO support"
157 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
158 select GPIOLIB_IRQCHIP
160 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
162 config GPIO_ASPEED_SGPIO
163 bool "Aspeed SGPIO support"
164 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
166 select GPIOLIB_IRQCHIP
168 Say Y here to support Aspeed AST2500 SGPIO functionality.
171 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
173 depends on ATH79 || COMPILE_TEST
175 select GPIOLIB_IRQCHIP
177 Select this option to enable GPIO driver for
178 Atheros AR71XX/AR724X/AR913X SoC devices.
180 config GPIO_RASPBERRYPI_EXP
181 tristate "Raspberry Pi 3 GPIO Expander"
182 default RASPBERRYPI_FIRMWARE
184 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
185 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
186 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
188 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
189 the firmware mailbox to communicate with VideoCore on BCM283x chips.
192 bool "Broadcom Kona GPIO"
193 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
195 Turn on GPIO support for Broadcom "Kona" chips.
197 config GPIO_BCM_XGS_IPROC
198 tristate "BRCM XGS iProc GPIO support"
199 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
201 select GPIOLIB_IRQCHIP
202 default ARCH_BCM_IPROC
204 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
207 tristate "BRCMSTB GPIO support"
208 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
209 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
213 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
216 tristate "Cadence GPIO support"
219 select GPIOLIB_IRQCHIP
221 Say yes here to enable support for Cadence GPIO controller.
224 tristate "CLPS711X GPIO support"
225 depends on ARCH_CLPS711X || COMPILE_TEST
228 Say yes here to support GPIO on CLPS711X SoCs.
231 tristate "TI Davinci/Keystone GPIO support"
232 default y if ARCH_DAVINCI
233 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
235 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
238 tristate "Synopsys DesignWare APB GPIO driver"
240 select GPIOLIB_IRQCHIP
242 Say Y or M here to build support for the Synopsys DesignWare APB
246 tristate "Spreadtrum EIC support"
247 depends on ARCH_SPRD || COMPILE_TEST
249 select GPIOLIB_IRQCHIP
251 Say yes here to support Spreadtrum EIC device.
254 tristate "Emma Mobile GPIO"
255 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
257 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
260 tristate "Airoha GPIO support"
261 depends on ARCH_AIROHA
264 select GPIOLIB_IRQCHIP
266 Say Y or M here to support the GPIO controller block on the
267 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
271 depends on ARCH_EP93XX
273 select GPIOLIB_IRQCHIP
276 tristate "Support for GPIO pins on XR17V352/354/358"
277 depends on SERIAL_8250_EXAR
280 Selecting this option will enable handling of GPIO pins present
281 on Exar XR17V352/354/358 chips.
284 bool "GE FPGA based GPIO"
288 Support for common GPIO functionality provided on some GE Single Board
291 This driver provides basic support (configure as input or output, read
292 and write pin state) for GPIO implemented in a number of GE single
295 config GPIO_FTGPIO010
296 bool "Faraday FTGPIO010 GPIO"
299 select GPIOLIB_IRQCHIP
300 default (ARCH_GEMINI || ARCH_MOXART)
302 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
303 Cortina systems Gemini platforms, Moxa ART and others.
305 config GPIO_GENERIC_PLATFORM
306 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
309 Say yes here to support basic platform_device memory-mapped GPIO controllers.
312 tristate "Aeroflex Gaisler GRGPIO support"
317 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
318 VHDL IP core library.
321 tristate "HiSilicon GPIO controller driver"
322 depends on ARM64 || COMPILE_TEST
324 select GPIOLIB_IRQCHIP
326 Say Y or M here to build support for the HiSilicon GPIO controller
328 This GPIO controller supports double-edge interrupt and multi-core
332 tristate "Nintendo Wii (Hollywood) GPIO"
335 select GPIOLIB_IRQCHIP
337 Select this to support the GPIO controller of the Nintendo Wii.
342 tristate "Intel ICH GPIO"
346 Say yes here to support the GPIO functionality of a number of Intel
347 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
348 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
349 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
358 bool "Intel IXP4xx GPIO"
359 depends on ARCH_IXP4XX
362 select GPIOLIB_IRQCHIP
363 select IRQ_DOMAIN_HIERARCHY
365 Say yes here to support the GPIO functionality of a number of Intel
366 IXP4xx series of chips.
371 tristate "Xylon LogiCVC GPIO support"
372 depends on MFD_SYSCON && OF
374 Say yes here to support GPIO functionality of the Xylon LogiCVC
375 programmable logic block.
378 bool "Loongson-2/3 GPIO support"
379 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
381 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
384 tristate "NXP LPC18XX/43XX GPIO support"
385 default y if ARCH_LPC18XX
386 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
387 select IRQ_DOMAIN_HIERARCHY
389 Select this option to enable GPIO driver for
390 NXP LPC18XX/43XX devices.
393 tristate "NXP LPC32XX GPIO support"
394 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
396 Select this option to enable GPIO driver for
400 tristate "GPIO support for Fujitsu MB86S7x Platforms"
402 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
405 tristate "MEN 16Z127 GPIO support"
409 Say yes here to support the MEN 16Z127 GPIO Controller.
411 config GPIO_MM_LANTIQ
412 bool "Lantiq Memory mapped GPIOs"
413 depends on LANTIQ && SOC_XWAY
415 This enables support for memory mapped GPIOs on the External Bus Unit
416 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
417 created by attaching a 16-bit latch to the bus.
421 depends on PPC_MPC52xx
424 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
425 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
426 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
431 Say Y here if you're going to use hardware that connects to the
432 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
435 bool "Mediatek MT7621 GPIO Support"
436 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
439 select GPIOLIB_IRQCHIP
441 Say yes here to support the Mediatek MT7621 SoC GPIO device.
445 depends on PLAT_ORION || ARCH_MVEBU
447 select GENERIC_IRQ_CHIP
451 tristate "i.MX GPIO support"
452 depends on ARCH_MXC || COMPILE_TEST
454 select GENERIC_IRQ_CHIP
457 bool "Freescale MXS GPIO support" if COMPILE_TEST
458 depends on ARCH_MXS || COMPILE_TEST
459 default y if ARCH_MXS
461 select GENERIC_IRQ_CHIP
464 tristate "Cavium OCTEON GPIO"
465 depends on CAVIUM_OCTEON_SOC
468 Say yes here to support the on-chip GPIO lines on the OCTEON
472 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
473 default y if ARCH_OMAP
475 select GENERIC_IRQ_CHIP
476 select GPIOLIB_IRQCHIP
478 Say yes here to enable GPIO support for TI OMAP SoCs.
481 tristate "PrimeCell PL061 GPIO support"
484 select GPIOLIB_IRQCHIP
486 Say yes here to support the PrimeCell PL061 GPIO device.
488 config GPIO_PMIC_EIC_SPRD
489 tristate "Spreadtrum PMIC EIC support"
490 depends on MFD_SC27XX_PMIC || COMPILE_TEST
492 select GPIOLIB_IRQCHIP
494 Say yes here to support Spreadtrum PMIC EIC device.
497 bool "PXA GPIO support"
498 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
500 Say yes here to support the PXA GPIO device.
503 tristate "Renesas R-Car and RZ/G GPIO support"
504 depends on ARCH_RENESAS || COMPILE_TEST
505 select GPIOLIB_IRQCHIP
507 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
510 bool "RDA Micro GPIO controller support"
511 depends on ARCH_RDA || COMPILE_TEST
514 select GPIOLIB_IRQCHIP
516 Say Y here to support RDA Micro GPIO controller.
518 config GPIO_REALTEK_OTTO
519 tristate "Realtek Otto GPIO support"
520 depends on MACH_REALTEK_RTL
521 default MACH_REALTEK_RTL
523 select GPIOLIB_IRQCHIP
525 The GPIO controller on the Otto MIPS platform supports up to two
526 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
527 are grouped in four 8-bit wide ports.
529 When built as a module, the module will be called realtek_otto_gpio.
534 A 32-bit single register GPIO fixed in/out implementation. This
535 can be used to represent any register as a set of GPIO signals.
538 tristate "Rockchip GPIO support"
539 depends on ARCH_ROCKCHIP || COMPILE_TEST
540 select GENERIC_IRQ_CHIP
541 select GPIOLIB_IRQCHIP
542 default ARCH_ROCKCHIP
544 Say yes here to support GPIO on Rockchip SoCs.
546 config GPIO_SAMA5D2_PIOBU
547 tristate "SAMA5D2 PIOBU GPIO support"
548 depends on MFD_SYSCON
550 depends on ARCH_AT91 || COMPILE_TEST
553 Say yes here to use the PIOBU pins as GPIOs.
555 PIOBU pins on the SAMA5D2 can be used as GPIOs.
556 The difference from regular GPIOs is that they
557 maintain their value during backup/self-refresh.
560 bool "SiFive GPIO support"
562 select IRQ_DOMAIN_HIERARCHY
564 select GPIOLIB_IRQCHIP
567 Say yes here to support the GPIO device on SiFive SoCs.
570 tristate "SIOX GPIO support"
572 select GPIOLIB_IRQCHIP
574 Say yes here to support SIOX I/O devices. These are units connected
575 via a SIOX bus and have a number of fixed-direction I/O lines.
577 config GPIO_SNPS_CREG
578 bool "Synopsys GPIO via CREG (Control REGisters) driver"
579 depends on ARC || COMPILE_TEST
582 This driver supports GPIOs via CREG on various Synopsys SoCs.
583 This is a single-register MMIO GPIO driver for complex cases
584 where only several fields in register belong to GPIO lines and
585 each GPIO line owns a field with different length and on/off value.
587 config GPIO_SPEAR_SPICS
588 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
589 depends on PLAT_SPEAR
590 select GENERIC_IRQ_CHIP
592 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
595 tristate "Spreadtrum GPIO support"
596 depends on ARCH_SPRD || COMPILE_TEST
598 select GPIOLIB_IRQCHIP
600 Say yes here to support Spreadtrum GPIO device.
603 bool "XWAY STP GPIOs"
604 depends on SOC_XWAY || COMPILE_TEST
607 This enables support for the Serial To Parallel (STP) unit found on
608 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
609 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
610 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
614 tristate "GPIO based on SYSCON"
615 depends on MFD_SYSCON && OF
617 Say yes here to support GPIO functionality though SYSCON driver.
622 select GENERIC_IRQ_CHIP
626 tristate "NVIDIA Tegra GPIO support"
628 depends on ARCH_TEGRA || COMPILE_TEST
630 select GPIOLIB_IRQCHIP
631 select IRQ_DOMAIN_HIERARCHY
633 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
636 tristate "NVIDIA Tegra186 GPIO support"
637 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
638 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
640 select GPIOLIB_IRQCHIP
641 select IRQ_DOMAIN_HIERARCHY
643 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
646 tristate "TS-4800 DIO blocks and compatibles"
648 depends on SOC_IMX51 || COMPILE_TEST
651 This driver support TS-4800 FPGA GPIO controllers.
654 tristate "Cavium ThunderX/OCTEON-TX GPIO"
655 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
657 select GPIOLIB_IRQCHIP
658 select IRQ_DOMAIN_HIERARCHY
659 select IRQ_FASTEOI_HIERARCHY_HANDLERS
661 Say yes here to support the on-chip GPIO lines on the ThunderX
662 and OCTEON-TX families of SoCs.
665 tristate "UniPhier GPIO support"
666 depends on ARCH_UNIPHIER || COMPILE_TEST
668 select IRQ_DOMAIN_HIERARCHY
670 Say yes here to support UniPhier GPIOs.
675 select GPIOLIB_IRQCHIP
677 Say yes here to support i.MX or Vybrid vf610 GPIOs.
680 tristate "Toshiba Visconti GPIO support"
681 depends on ARCH_VISCONTI || COMPILE_TEST
683 select GPIOLIB_IRQCHIP
685 select IRQ_DOMAIN_HIERARCHY
687 Say yes here to support GPIO on Tohisba Visconti.
690 tristate "VIA VX855/VX875 GPIO"
691 depends on (X86 || COMPILE_TEST) && PCI
695 Support access to the VX855/VX875 GPIO lines through the GPIO library.
697 This driver provides common support for accessing the device.
698 Additional drivers must be enabled in order to use the
699 functionality of the device.
702 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
703 depends on MFD_WCD934X && OF_GPIO
705 This driver is to support GPIO block found on the Qualcomm Technologies
706 Inc WCD9340/WCD9341 Audio Codec.
709 bool "APM X-Gene GPIO controller support"
710 depends on ARM64 && OF_GPIO
712 This driver is to support the GPIO block within the APM X-Gene SoC
713 platform's generic flash controller. The GPIO pins are muxed with
714 the generic flash controller's address and data pins. Say yes
715 here to enable the GFC GPIO functionality.
718 tristate "APM X-Gene GPIO standby controller support"
719 depends on (ARCH_XGENE || COMPILE_TEST)
721 select GPIOLIB_IRQCHIP
722 select IRQ_DOMAIN_HIERARCHY
724 This driver supports the GPIO block within the APM X-Gene
725 Standby Domain. Say yes here to enable the GPIO functionality.
728 tristate "Xilinx GPIO support"
729 select GPIOLIB_IRQCHIP
732 Say yes here to support the Xilinx FPGA GPIO device.
735 tristate "Cavium ThunderX2 GPIO support"
736 depends on ARCH_THUNDER2 || COMPILE_TEST
737 select GPIOLIB_IRQCHIP
739 This driver provides support for GPIO interface on Cavium's ThunderX2
740 CN99XX SoCs (Originally from Netlogic XLP).
745 bool "Xtensa GPIO32 support"
747 depends on HAVE_XTENSA_GPIO32
750 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
751 and EXPSTATE (output) ports.
754 bool "LSI ZEVIO SoC memory mapped GPIOs"
757 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
760 tristate "Xilinx Zynq GPIO support"
761 depends on ARCH_ZYNQ || ARCH_ZYNQMP
762 select GPIOLIB_IRQCHIP
764 Say yes here to support Xilinx Zynq GPIO controller.
766 config GPIO_ZYNQMP_MODEPIN
767 tristate "ZynqMP ps-mode pin GPIO configuration driver"
768 depends on ZYNQMP_FIRMWARE
769 default ZYNQMP_FIRMWARE
771 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
774 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
775 is 4-bits boot mode pins. It sets and gets the status of
776 the ps-mode pin. Every pin can be configured as input/output.
778 config GPIO_LOONGSON1
779 tristate "Loongson1 GPIO support"
780 depends on MACH_LOONGSON32
783 Say Y or M here to support GPIO on Loongson1 SoCs.
786 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
788 This option enables driver for GPIO on AMD's Fusion Controller Hub,
789 as found on G-series SOCs (e.g. GX-412TC).
791 Note: This driver doesn't register itself automatically, as it
792 needs to be provided with platform-specific configuration.
793 (See e.g. CONFIG_PCENGINES_APU2.)
796 bool "MStar MSC313 GPIO support"
797 depends on ARCH_MSTARV7
799 select GPIOLIB_IRQCHIP
800 select IRQ_DOMAIN_HIERARCHY
802 Say Y here to support the main GPIO block on MStar/SigmaStar
806 tristate "IDT 79RC3243X GPIO support"
807 depends on MIKROTIK_RB532 || COMPILE_TEST
809 select GPIOLIB_IRQCHIP
811 Select this option to enable GPIO driver for
812 IDT 79RC3243X-based devices like Mikrotik RB532.
814 To compile this driver as a module, choose M here: the module will
815 be called gpio-idt3243x.
819 menu "Port-mapped I/O GPIO drivers"
820 depends on X86 # Unconditional I/O space access
826 Enables support for the i8255 interface library functions. The i8255
827 interface library provides functions to facilitate communication with
828 interfaces compatible with the venerable Intel 8255 Programmable
829 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
830 in the early 1970s but compatible interfaces are nowadays typically
831 found embedded in larger VLSI processing chips and FPGA components.
833 If built as a module its name will be gpio-i8255.
835 config GPIO_104_DIO_48E
836 tristate "ACCES 104-DIO-48E GPIO support"
841 select GPIOLIB_IRQCHIP
844 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
845 104-DIO-24E). The base port addresses for the devices may be
846 configured via the base module parameter. The interrupt line numbers
847 for the devices may be configured via the irq module parameter.
849 config GPIO_104_IDIO_16
850 tristate "ACCES 104-IDIO-16 GPIO support"
853 select GPIOLIB_IRQCHIP
856 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
857 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
858 base port addresses for the devices may be configured via the base
859 module parameter. The interrupt line numbers for the devices may be
860 configured via the irq module parameter.
862 config GPIO_104_IDI_48
863 tristate "ACCES 104-IDI-48 GPIO support"
868 select GPIOLIB_IRQCHIP
871 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
872 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
873 the devices may be configured via the base module parameter. The
874 interrupt line numbers for the devices may be configured via the irq
878 tristate "Fintek and Nuvoton Super-I/O GPIO support"
880 This option enables support for GPIOs found on Fintek Super-I/O
881 chips F71869, F71869A, F71882FG, F71889F and F81866.
882 As well as Nuvoton Super-I/O chip NCT6116D.
884 To compile this driver as a module, choose M here: the module will
885 be called f7188x-gpio.
888 tristate "Diamond Systems GPIO-MM GPIO support"
894 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
896 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
897 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
898 support for these 48 channels of digital I/O.
900 The base port addresses for the devices may be configured via the base
901 array module parameter.
904 tristate "IT87xx GPIO support"
906 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
908 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
909 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
912 To compile this driver as a module, choose M here: the module will
916 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
917 depends on (X86 || COMPILE_TEST) && ACPI
919 select GPIOLIB_IRQCHIP
921 Say yes here to support GPIO interface on Intel Poulsbo SCH,
922 Intel Tunnel Creek processor, Intel Centerton processor or
923 Intel Quark X1000 SoC.
925 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
926 powered by the core power rail and are turned off during sleep
927 modes (S3 and higher). The remaining four GPIOs are powered by
928 the Intel SCH suspend power supply. These GPIOs remain
929 active during S3. The suspend-powered GPIOs can be used to wake the
930 system from the Suspend-to-RAM state.
932 The Intel Tunnel Creek processor has 5 GPIOs powered by the
933 core power rail and 9 from suspend power supply.
935 The Intel Centerton processor has a total of 30 GPIO pins.
936 Twenty-one are powered by the core power rail and 9 from the
937 suspend power supply.
939 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
940 power well and 6 from the suspend power well.
943 tristate "SMSC SCH311x SuperI/O GPIO"
945 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
946 SCH3116 "Super I/O" chipsets.
948 To compile this driver as a module, choose M here: the module will
949 be called gpio-sch311x.
952 tristate "TS-5500 DIO blocks and compatibles"
953 depends on TS5500 || COMPILE_TEST
955 This driver supports Digital I/O exposed by pin blocks found on some
956 Technologic Systems platforms. It includes, but is not limited to, 3
957 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
961 tristate "Winbond Super I/O GPIO support"
964 This option enables support for GPIOs found on Winbond Super I/O
966 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
969 You will need to provide a module parameter "gpios", or a
970 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
971 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
973 To compile this driver as a module, choose M here: the module will
974 be called gpio-winbond.
977 tristate "WinSystems WS16C48 GPIO support"
979 select GPIOLIB_IRQCHIP
981 Enables GPIO support for the WinSystems WS16C48. The base port
982 addresses for the devices may be configured via the base module
983 parameter. The interrupt line numbers for the devices may be
984 configured via the irq module parameter.
988 menu "I2C GPIO expanders"
992 tristate "Avionic Design N-bit GPIO expander"
994 select GPIOLIB_IRQCHIP
996 This option enables support for N GPIOs found on Avionic Design
997 I2C GPIO expanders. The register space will be extended by powers
998 of two, so the controller will need to accommodate for that. For
999 example: if a controller provides 48 pins, 6 registers will be
1000 enough to represent all pins, but the driver will assume a
1001 register layout for 64 pins (8 registers).
1004 tristate "Gateworks PLD GPIO Expander"
1007 Say yes here to provide access to the Gateworks I2C PLD GPIO
1008 Expander. This is used at least on the Cambria GW2358-4.
1011 tristate "Maxim MAX7300 GPIO expander"
1014 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1017 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1019 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1020 Port Expanders. Each IO port on these chips has a fixed role of
1021 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1022 Input and Output (designed by 'P'). The combinations are listed
1025 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1026 max7322 (4I4O), max7323 (4P4O)
1028 16 bits: max7324 (8I8O), max7325 (8P8O),
1029 max7326 (4I12O), max7327 (4P12O)
1031 Board setup code must specify the model to use, and the start
1032 number for these GPIOs.
1034 config GPIO_MAX732X_IRQ
1035 bool "Interrupt controller support for MAX732x"
1036 depends on GPIO_MAX732X=y
1037 select GPIOLIB_IRQCHIP
1039 Say yes here to enable the max732x to be used as an interrupt
1040 controller. It requires the driver to be built in the kernel.
1043 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1046 Say yes here to provide access to several register-oriented
1047 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1050 4 bits: pca9536, pca9537
1052 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1053 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1055 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1060 40 bits: pca9505, pca9698
1062 config GPIO_PCA953X_IRQ
1063 bool "Interrupt controller support for PCA953x"
1064 depends on GPIO_PCA953X
1065 select GPIOLIB_IRQCHIP
1067 Say yes here to enable the pca953x to be used as an interrupt
1071 tristate "PCA9570 4-Bit I2C GPO expander"
1073 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1075 To compile this driver as a module, choose M here: the module will
1076 be called gpio-pca9570.
1079 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1080 select GPIOLIB_IRQCHIP
1083 Say yes here to provide access to most "quasi-bidirectional" I2C
1084 GPIO expanders used for additional digital outputs or inputs.
1085 Most of these parts are from NXP, though TI is a second source for
1086 some of them. Compatible models include:
1088 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1089 pca9670, pca9672, pca9674, pca9674a,
1092 16 bits: pcf8575, pcf8575c, pca8575,
1093 pca9671, pca9673, pca9675
1095 Your board setup code will need to declare the expanders in
1096 use, and assign numbers to the GPIOs they expose. Those GPIOs
1097 can then be used from drivers and other kernel code, just like
1098 other GPIOs, but only accessible from task contexts.
1100 This driver provides an in-kernel interface to those GPIOs using
1101 platform-neutral GPIO calls.
1103 config GPIO_TPIC2810
1104 tristate "TPIC2810 8-Bit I2C GPO expander"
1106 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1108 To compile this driver as a module, choose M here: the module will
1109 be called gpio-tpic2810.
1112 tristate "Technologic Systems FPGA I2C GPIO"
1113 depends on SOC_IMX6 || COMPILE_TEST
1116 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1117 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1121 menu "MFD GPIO expanders"
1124 tristate "GPIO Support for ADP5520 PMIC"
1125 depends on PMIC_ADP5520
1127 This option enables support for on-chip GPIO found
1128 on Analog Devices ADP5520 PMICs.
1130 config GPIO_ALTERA_A10SR
1131 tristate "Altera Arria10 System Resource GPIO"
1132 depends on MFD_ALTERA_A10SR
1134 Driver for Arria10 Development Kit GPIO expansion which
1135 includes reads of pushbuttons and DIP switches as well
1139 tristate "Wolfson Microelectronics Arizona class devices"
1140 depends on MFD_ARIZONA
1142 Support for GPIOs on Wolfson Arizona class devices.
1145 tristate "ROHM BD71815 PMIC GPIO support"
1146 depends on MFD_ROHM_BD71828
1148 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1149 available on the ROHM PMIC.
1151 This driver can also be built as a module. If so, the module
1152 will be called gpio-bd71815.
1155 tristate "ROHM BD71828 GPIO support"
1156 depends on MFD_ROHM_BD71828
1158 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1159 available on the ROHM PMIC in total. The GPIOs are limited to
1160 outputs only and pins must be configured to GPIO outputs by
1161 OTP. Enable this only if you want to use these pins as outputs.
1163 This driver can also be built as a module. If so, the module
1164 will be called gpio-bd71828.
1166 config GPIO_BD9571MWV
1167 tristate "ROHM BD9571 GPIO support"
1168 depends on MFD_BD9571MWV
1170 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1171 available on the ROHM PMIC in total, both of which can also
1172 generate interrupts.
1174 This driver can also be built as a module. If so, the module
1175 will be called gpio-bd9571mwv.
1177 config GPIO_CRYSTAL_COVE
1178 tristate "GPIO support for Crystal Cove PMIC"
1179 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1180 select GPIOLIB_IRQCHIP
1182 Support for GPIO pins on Crystal Cove PMIC.
1184 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1187 This driver can also be built as a module. If so, the module will be
1188 called gpio-crystalcove.
1191 tristate "AMD CS5535/CS5536 GPIO support"
1192 depends on X86 || MIPS || COMPILE_TEST
1193 depends on MFD_CS5535
1195 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1196 can be used for quite a number of things. The CS5535/6 is found on
1197 AMD Geode and Lemote Yeeloong devices.
1202 tristate "Dialog DA9052 GPIO"
1203 depends on PMIC_DA9052
1205 Say yes here to enable the GPIO driver for the DA9052 chip.
1208 tristate "Dialog Semiconductor DA9055 GPIO"
1209 depends on MFD_DA9055
1211 Say yes here to enable the GPIO driver for the DA9055 chip.
1213 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1214 be controlled by this driver.
1216 If driver is built as a module it will be called gpio-da9055.
1219 tristate "Diolan DLN2 GPIO support"
1221 select GPIOLIB_IRQCHIP
1224 Select this option to enable GPIO driver for the Diolan DLN2
1227 This driver can also be built as a module. If so, the module
1228 will be called gpio-dln2.
1231 bool "HTC EGPIO support"
1234 This driver supports the CPLD egpio chip present on
1235 several HTC phones. It provides basic support for input
1236 pins, output pins, and IRQs.
1238 config GPIO_JANZ_TTL
1239 tristate "Janz VMOD-TTL Digital IO Module"
1240 depends on MFD_JANZ_CMODIO
1242 This enables support for the Janz VMOD-TTL Digital IO module.
1243 This driver provides support for driving the pins in output
1244 mode only. Input mode is not supported.
1247 tristate "Kontron ETX / COMexpress GPIO"
1248 depends on MFD_KEMPLD
1250 This enables support for the PLD GPIO interface on some Kontron ETX
1251 and COMexpress (ETXexpress) modules.
1253 This driver can also be built as a module. If so, the module will be
1257 tristate "TI/National Semiconductor LP3943 GPIO expander"
1258 depends on MFD_LP3943
1260 GPIO driver for LP3943 MFD.
1261 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1262 Open drain outputs are required for this usage.
1265 tristate "TI LP873X GPO"
1266 depends on MFD_TI_LP873X
1268 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1271 This driver can also be built as a module. If so, the module will be
1275 tristate "TI LP87565 GPIO"
1276 depends on MFD_TI_LP87565
1278 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1281 This driver can also be built as a module. If so, the module will be
1282 called gpio-lp87565.
1285 tristate "Cirrus Logic Madera class codecs"
1286 depends on PINCTRL_MADERA
1288 Support for GPIOs on Cirrus Logic Madera class codecs.
1290 config GPIO_MAX77620
1291 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1292 depends on MFD_MAX77620
1293 select GPIOLIB_IRQCHIP
1295 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1296 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1297 driver also provides interrupt support for each of the GPIOs.
1298 Say yes here to enable the max77620 to be used as GPIO controller.
1300 config GPIO_MAX77650
1301 tristate "Maxim MAX77650/77651 GPIO support"
1302 depends on MFD_MAX77650
1304 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1305 These chips have a single pin that can be configured as GPIO.
1308 bool "TI PALMAS series PMICs GPIO"
1309 depends on MFD_PALMAS
1311 Select this option to enable GPIO driver for the TI PALMAS
1315 bool "RICOH RC5T583 GPIO"
1316 depends on MFD_RC5T583
1318 Select this option to enable GPIO driver for the Ricoh RC5T583
1320 This driver provides the support for driving/reading the GPIO pins
1321 of RC5T583 device through standard GPIO library.
1323 config GPIO_SL28CPLD
1324 tristate "Kontron sl28cpld GPIO support"
1325 depends on MFD_SL28CPLD || COMPILE_TEST
1327 select GPIOLIB_IRQCHIP
1330 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1332 This driver can also be built as a module. If so, the module will be
1333 called gpio-sl28cpld.
1337 depends on MFD_STMPE
1339 select GPIOLIB_IRQCHIP
1341 This enables support for the GPIOs found on the STMPE I/O
1345 bool "TC3589X GPIOs"
1346 depends on MFD_TC3589X
1348 select GPIOLIB_IRQCHIP
1350 This enables support for the GPIOs found on the TC3589X
1353 config GPIO_TIMBERDALE
1354 bool "Support for timberdale GPIO IP"
1355 depends on MFD_TIMBERDALE
1357 Add support for the GPIO IP in the timberdale FPGA.
1359 config GPIO_TN48M_CPLD
1360 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1361 depends on MFD_TN48M_CPLD
1364 This enables support for the GPIOs found on the Delta
1365 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1366 they are input-only or output-only type.
1368 This driver can also be built as a module. If so, the
1369 module will be called gpio-tn48m.
1371 config GPIO_TPS65086
1372 tristate "TI TPS65086 GPO"
1373 depends on MFD_TPS65086
1375 This driver supports the GPO on TI TPS65086x PMICs.
1377 config GPIO_TPS65218
1378 tristate "TPS65218 GPIO"
1379 depends on MFD_TPS65218
1381 Select this option to enable GPIO driver for the TPS65218
1384 config GPIO_TPS6586X
1385 bool "TPS6586X GPIO"
1386 depends on MFD_TPS6586X
1388 Select this option to enable GPIO driver for the TPS6586X
1391 config GPIO_TPS65910
1392 bool "TPS65910 GPIO"
1393 depends on MFD_TPS65910
1395 Select this option to enable GPIO driver for the TPS65910
1398 config GPIO_TPS65912
1399 tristate "TI TPS65912 GPIO"
1400 depends on MFD_TPS65912
1402 This driver supports TPS65912 GPIO chip.
1404 config GPIO_TPS68470
1405 tristate "TPS68470 GPIO"
1406 depends on INTEL_SKL_INT3472
1408 Select this option to enable GPIO driver for the TPS68470
1410 There are 7 GPIOs and few sensor-related GPIOs supported
1411 by the TPS68470. While the 7 GPIOs can be configured as
1412 input or output as appropriate, the sensor related GPIOs
1413 are "output only" GPIOs.
1416 tristate "TQ-Systems QTMX86 GPIO"
1417 depends on MFD_TQMX86 || COMPILE_TEST
1418 depends on HAS_IOPORT_MAP
1419 select GPIOLIB_IRQCHIP
1421 This driver supports GPIO on the TQMX86 IO controller.
1424 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1425 depends on TWL4030_CORE
1427 Say yes here to access the GPIO signals of various multi-function
1428 power management chips from Texas Instruments.
1431 tristate "TWL6040 GPO"
1432 depends on TWL6040_CORE
1434 Say yes here to access the GPO signals of twl6040
1435 audio chip from Texas Instruments.
1437 config GPIO_WHISKEY_COVE
1438 tristate "GPIO support for Whiskey Cove PMIC"
1439 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1440 select GPIOLIB_IRQCHIP
1442 Support for GPIO pins on Whiskey Cove PMIC.
1444 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1447 This driver can also be built as a module. If so, the module will be
1451 tristate "WM831x GPIOs"
1452 depends on MFD_WM831X
1454 Say yes here to access the GPIO signals of WM831x power management
1455 chips from Wolfson Microelectronics.
1458 tristate "WM8350 GPIOs"
1459 depends on MFD_WM8350
1461 Say yes here to access the GPIO signals of WM8350 power management
1462 chips from Wolfson Microelectronics.
1465 tristate "WM8994 GPIOs"
1466 depends on MFD_WM8994
1468 Say yes here to access the GPIO signals of WM8994 audio hub
1469 CODECs from Wolfson Microelectronics.
1473 menu "PCI GPIO expanders"
1477 tristate "AMD 8111 GPIO driver"
1478 depends on X86 || COMPILE_TEST
1479 depends on HAS_IOPORT_MAP
1481 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1483 Note that usually system firmware/ACPI handles GPIO pins on their
1484 own and users might easily break their systems with uncareful usage
1490 tristate "BT8XX GPIO abuser"
1491 depends on VIDEO_BT848=n
1493 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1494 as a cheap PCI GPIO card.
1496 This chip can be found on Miro, Hauppauge and STB TV-cards.
1498 The card needs to be physically altered for using it as a
1499 GPIO card. For more information on how to build a GPIO card
1500 from a BT8xx TV card, see the documentation file at
1501 Documentation/driver-api/gpio/bt8xxgpio.rst
1505 config GPIO_MERRIFIELD
1506 tristate "Intel Merrifield GPIO support"
1507 depends on X86_INTEL_MID
1508 select GPIOLIB_IRQCHIP
1510 Say Y here to support Intel Merrifield GPIO.
1513 tristate "Mellanox BlueField SoC GPIO"
1514 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1517 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1520 tristate "Mellanox BlueField 2 SoC GPIO"
1521 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1523 select GPIOLIB_IRQCHIP
1525 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1528 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1529 depends on X86 || COMPILE_TEST
1530 select GENERIC_IRQ_CHIP
1532 ML7213 is companion chip for Intel Atom E6xx series.
1533 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1534 Hub) which is for IVI (In-Vehicle Infotainment) use.
1535 This driver can access the IOH's GPIO device.
1538 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1539 depends on X86_32 || MIPS || COMPILE_TEST
1540 select GENERIC_IRQ_CHIP
1542 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1543 which is an IOH (Input/Output Hub) for x86 embedded processor.
1544 This driver can access PCH GPIO device.
1546 This driver also can be used for LAPIS Semiconductor IOH (Input/
1547 Output Hub), ML7223 and ML7831.
1548 ML7223 IOH is for MP (Media Phone) use.
1549 ML7831 IOH is for general purpose use.
1550 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1551 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1553 config GPIO_PCI_IDIO_16
1554 tristate "ACCES PCI-IDIO-16 GPIO support"
1555 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 latch driver"
1680 Say yes here to enable a driver for GPIO multiplexers based on latches
1681 connected to other GPIOs.
1684 tristate "GPIO Testing Driver"
1687 This enables GPIO Testing driver, which provides a way to test GPIO
1688 subsystem through sysfs (or char device) and debugfs.
1689 User could use it through the script in
1690 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1694 tristate "VirtIO GPIO support"
1696 select GPIOLIB_IRQCHIP
1698 Say Y here to enable guest support for virtio-based GPIO controllers.
1700 These virtual GPIOs can be routed to real GPIOs or attached to
1701 simulators on the host (like QEMU).
1704 tristate "GPIO Simulator Module"
1708 This enables the GPIO simulator - a configfs-based GPIO testing