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
359 select GPIOLIB_IRQCHIP
360 select IRQ_DOMAIN_HIERARCHY
362 Say yes here to support the GPIO functionality of a number of Intel
363 IXP4xx series of chips.
368 tristate "Xylon LogiCVC GPIO support"
369 depends on MFD_SYSCON && OF
371 Say yes here to support GPIO functionality of the Xylon LogiCVC
372 programmable logic block.
375 bool "Loongson-2/3 GPIO support"
376 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
378 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
381 tristate "NXP LPC18XX/43XX GPIO support"
382 default y if ARCH_LPC18XX
383 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
384 select IRQ_DOMAIN_HIERARCHY
386 Select this option to enable GPIO driver for
387 NXP LPC18XX/43XX devices.
390 tristate "NXP LPC32XX GPIO support"
391 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
393 Select this option to enable GPIO driver for
397 tristate "GPIO support for Fujitsu MB86S7x Platforms"
399 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
402 tristate "MEN 16Z127 GPIO support"
406 Say yes here to support the MEN 16Z127 GPIO Controller.
408 config GPIO_MM_LANTIQ
409 bool "Lantiq Memory mapped GPIOs"
410 depends on LANTIQ && SOC_XWAY
412 This enables support for memory mapped GPIOs on the External Bus Unit
413 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
414 created by attaching a 16-bit latch to the bus.
418 depends on PPC_MPC52xx
421 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
422 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
423 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
428 Say Y here if you're going to use hardware that connects to the
429 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
432 bool "Mediatek MT7621 GPIO Support"
433 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
436 select GPIOLIB_IRQCHIP
438 Say yes here to support the Mediatek MT7621 SoC GPIO device.
442 depends on PLAT_ORION || ARCH_MVEBU
444 select GENERIC_IRQ_CHIP
448 tristate "i.MX GPIO support"
449 depends on ARCH_MXC || COMPILE_TEST
451 select GENERIC_IRQ_CHIP
454 bool "Freescale MXS GPIO support" if COMPILE_TEST
455 depends on ARCH_MXS || COMPILE_TEST
456 default y if ARCH_MXS
458 select GENERIC_IRQ_CHIP
461 tristate "Cavium OCTEON GPIO"
462 depends on CAVIUM_OCTEON_SOC
465 Say yes here to support the on-chip GPIO lines on the OCTEON
469 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
470 default y if ARCH_OMAP
472 select GENERIC_IRQ_CHIP
473 select GPIOLIB_IRQCHIP
475 Say yes here to enable GPIO support for TI OMAP SoCs.
478 tristate "PrimeCell PL061 GPIO support"
481 select GPIOLIB_IRQCHIP
483 Say yes here to support the PrimeCell PL061 GPIO device.
485 config GPIO_PMIC_EIC_SPRD
486 tristate "Spreadtrum PMIC EIC support"
487 depends on MFD_SC27XX_PMIC || COMPILE_TEST
489 select GPIOLIB_IRQCHIP
491 Say yes here to support Spreadtrum PMIC EIC device.
494 bool "PXA GPIO support"
495 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
497 Say yes here to support the PXA GPIO device.
500 tristate "Renesas R-Car and RZ/G GPIO support"
501 depends on ARCH_RENESAS || COMPILE_TEST
502 select GPIOLIB_IRQCHIP
504 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
507 bool "RDA Micro GPIO controller support"
508 depends on ARCH_RDA || COMPILE_TEST
511 select GPIOLIB_IRQCHIP
513 Say Y here to support RDA Micro GPIO controller.
515 config GPIO_REALTEK_OTTO
516 tristate "Realtek Otto GPIO support"
517 depends on MACH_REALTEK_RTL
518 default MACH_REALTEK_RTL
520 select GPIOLIB_IRQCHIP
522 The GPIO controller on the Otto MIPS platform supports up to two
523 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
524 are grouped in four 8-bit wide ports.
526 When built as a module, the module will be called realtek_otto_gpio.
531 A 32-bit single register GPIO fixed in/out implementation. This
532 can be used to represent any register as a set of GPIO signals.
535 tristate "Rockchip GPIO support"
536 depends on ARCH_ROCKCHIP || COMPILE_TEST
537 select GENERIC_IRQ_CHIP
538 select GPIOLIB_IRQCHIP
539 default ARCH_ROCKCHIP
541 Say yes here to support GPIO on Rockchip SoCs.
543 config GPIO_SAMA5D2_PIOBU
544 tristate "SAMA5D2 PIOBU GPIO support"
545 depends on MFD_SYSCON
549 Say yes here to use the PIOBU pins as GPIOs.
551 PIOBU pins on the SAMA5D2 can be used as GPIOs.
552 The difference from regular GPIOs is that they
553 maintain their value during backup/self-refresh.
556 bool "SiFive GPIO support"
558 select IRQ_DOMAIN_HIERARCHY
560 select GPIOLIB_IRQCHIP
563 Say yes here to support the GPIO device on SiFive SoCs.
566 tristate "SIOX GPIO support"
568 select GPIOLIB_IRQCHIP
570 Say yes here to support SIOX I/O devices. These are units connected
571 via a SIOX bus and have a number of fixed-direction I/O lines.
573 config GPIO_SNPS_CREG
574 bool "Synopsys GPIO via CREG (Control REGisters) driver"
575 depends on ARC || COMPILE_TEST
578 This driver supports GPIOs via CREG on various Synopsys SoCs.
579 This is a single-register MMIO GPIO driver for complex cases
580 where only several fields in register belong to GPIO lines and
581 each GPIO line owns a field with different length and on/off value.
583 config GPIO_SPEAR_SPICS
584 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
585 depends on PLAT_SPEAR
586 select GENERIC_IRQ_CHIP
588 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
591 tristate "Spreadtrum GPIO support"
592 depends on ARCH_SPRD || COMPILE_TEST
594 select GPIOLIB_IRQCHIP
596 Say yes here to support Spreadtrum GPIO device.
599 bool "STA2x11/ConneXt GPIO support"
600 depends on MFD_STA2X11
601 select GENERIC_IRQ_CHIP
603 Say yes here to support the STA2x11/ConneXt GPIO device.
604 The GPIO module has 128 GPIO pins with alternate functions.
607 bool "XWAY STP GPIOs"
608 depends on SOC_XWAY || COMPILE_TEST
611 This enables support for the Serial To Parallel (STP) unit found on
612 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
613 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
614 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
618 tristate "GPIO based on SYSCON"
619 depends on MFD_SYSCON && OF
621 Say yes here to support GPIO functionality though SYSCON driver.
626 select GENERIC_IRQ_CHIP
630 tristate "NVIDIA Tegra GPIO support"
632 depends on ARCH_TEGRA || COMPILE_TEST
634 select GPIOLIB_IRQCHIP
635 select IRQ_DOMAIN_HIERARCHY
637 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
640 tristate "NVIDIA Tegra186 GPIO support"
641 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
642 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
644 select GPIOLIB_IRQCHIP
645 select IRQ_DOMAIN_HIERARCHY
647 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
650 tristate "TS-4800 DIO blocks and compatibles"
652 depends on SOC_IMX51 || COMPILE_TEST
655 This driver support TS-4800 FPGA GPIO controllers.
658 tristate "Cavium ThunderX/OCTEON-TX GPIO"
659 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
661 select GPIOLIB_IRQCHIP
662 select IRQ_DOMAIN_HIERARCHY
663 select IRQ_FASTEOI_HIERARCHY_HANDLERS
665 Say yes here to support the on-chip GPIO lines on the ThunderX
666 and OCTEON-TX families of SoCs.
669 tristate "UniPhier GPIO support"
670 depends on ARCH_UNIPHIER || COMPILE_TEST
672 select IRQ_DOMAIN_HIERARCHY
674 Say yes here to support UniPhier GPIOs.
679 select GPIOLIB_IRQCHIP
681 Say yes here to support i.MX or Vybrid vf610 GPIOs.
684 tristate "Toshiba Visconti GPIO support"
685 depends on ARCH_VISCONTI || COMPILE_TEST
687 select GPIOLIB_IRQCHIP
689 select IRQ_DOMAIN_HIERARCHY
691 Say yes here to support GPIO on Tohisba Visconti.
694 tristate "NEC VR4100 series General-purpose I/O Unit support"
695 depends on CPU_VR41XX
697 Say yes here to support the NEC VR4100 series General-purpose I/O Unit.
700 tristate "VIA VX855/VX875 GPIO"
701 depends on (X86 || COMPILE_TEST) && PCI
705 Support access to the VX855/VX875 GPIO lines through the GPIO library.
707 This driver provides common support for accessing the device.
708 Additional drivers must be enabled in order to use the
709 functionality of the device.
712 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
713 depends on MFD_WCD934X && OF_GPIO
715 This driver is to support GPIO block found on the Qualcomm Technologies
716 Inc WCD9340/WCD9341 Audio Codec.
719 bool "APM X-Gene GPIO controller support"
720 depends on ARM64 && OF_GPIO
722 This driver is to support the GPIO block within the APM X-Gene SoC
723 platform's generic flash controller. The GPIO pins are muxed with
724 the generic flash controller's address and data pins. Say yes
725 here to enable the GFC GPIO functionality.
728 tristate "APM X-Gene GPIO standby controller support"
729 depends on (ARCH_XGENE || COMPILE_TEST)
731 select GPIOLIB_IRQCHIP
732 select IRQ_DOMAIN_HIERARCHY
734 This driver supports the GPIO block within the APM X-Gene
735 Standby Domain. Say yes here to enable the GPIO functionality.
738 tristate "Xilinx GPIO support"
739 select GPIOLIB_IRQCHIP
742 Say yes here to support the Xilinx FPGA GPIO device.
745 tristate "Cavium ThunderX2 GPIO support"
746 depends on ARCH_THUNDER2 || COMPILE_TEST
747 select GPIOLIB_IRQCHIP
749 This driver provides support for GPIO interface on Cavium's ThunderX2
750 CN99XX SoCs (Originally from Netlogic XLP).
755 bool "Xtensa GPIO32 support"
757 depends on HAVE_XTENSA_GPIO32
760 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
761 and EXPSTATE (output) ports.
764 bool "LSI ZEVIO SoC memory mapped GPIOs"
765 depends on ARM && OF_GPIO
767 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
770 tristate "Xilinx Zynq GPIO support"
771 depends on ARCH_ZYNQ || ARCH_ZYNQMP
772 select GPIOLIB_IRQCHIP
774 Say yes here to support Xilinx Zynq GPIO controller.
776 config GPIO_ZYNQMP_MODEPIN
777 tristate "ZynqMP ps-mode pin GPIO configuration driver"
778 depends on ZYNQMP_FIRMWARE
779 default ZYNQMP_FIRMWARE
781 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
784 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
785 is 4-bits boot mode pins. It sets and gets the status of
786 the ps-mode pin. Every pin can be configured as input/output.
788 config GPIO_LOONGSON1
789 tristate "Loongson1 GPIO support"
790 depends on MACH_LOONGSON32
793 Say Y or M here to support GPIO on Loongson1 SoCs.
796 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
798 This option enables driver for GPIO on AMD's Fusion Controller Hub,
799 as found on G-series SOCs (e.g. GX-412TC).
801 Note: This driver doesn't register itself automatically, as it
802 needs to be provided with platform-specific configuration.
803 (See e.g. CONFIG_PCENGINES_APU2.)
806 bool "MStar MSC313 GPIO support"
807 depends on ARCH_MSTARV7
809 select GPIOLIB_IRQCHIP
810 select IRQ_DOMAIN_HIERARCHY
812 Say Y here to support the main GPIO block on MStar/SigmaStar
816 tristate "IDT 79RC3243X GPIO support"
817 depends on MIKROTIK_RB532 || COMPILE_TEST
819 select GPIOLIB_IRQCHIP
821 Select this option to enable GPIO driver for
822 IDT 79RC3243X-based devices like Mikrotik RB532.
824 To compile this driver as a module, choose M here: the module will
825 be called gpio-idt3243x.
829 menu "Port-mapped I/O GPIO drivers"
830 depends on X86 # Unconditional I/O space access
832 config GPIO_104_DIO_48E
833 tristate "ACCES 104-DIO-48E GPIO support"
836 select GPIOLIB_IRQCHIP
838 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
839 104-DIO-24E). The base port addresses for the devices may be
840 configured via the base module parameter. The interrupt line numbers
841 for the devices may be configured via the irq module parameter.
843 config GPIO_104_IDIO_16
844 tristate "ACCES 104-IDIO-16 GPIO support"
847 select GPIOLIB_IRQCHIP
849 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
850 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
851 base port addresses for the devices may be configured via the base
852 module parameter. The interrupt line numbers for the devices may be
853 configured via the irq module parameter.
855 config GPIO_104_IDI_48
856 tristate "ACCES 104-IDI-48 GPIO support"
859 select GPIOLIB_IRQCHIP
861 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
862 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
863 the devices may be configured via the base module parameter. The
864 interrupt line numbers for the devices may be configured via the irq
868 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
870 This option enables support for GPIOs found on Fintek Super-I/O
871 chips F71869, F71869A, F71882FG, F71889F and F81866.
873 To compile this driver as a module, choose M here: the module will
874 be called f7188x-gpio.
877 tristate "Diamond Systems GPIO-MM GPIO support"
881 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
883 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
884 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
885 support for these 48 channels of digital I/O.
887 The base port addresses for the devices may be configured via the base
888 array module parameter.
891 tristate "IT87xx GPIO support"
893 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
895 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
896 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
899 To compile this driver as a module, choose M here: the module will
903 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
904 depends on (X86 || COMPILE_TEST) && ACPI
906 select GPIOLIB_IRQCHIP
908 Say yes here to support GPIO interface on Intel Poulsbo SCH,
909 Intel Tunnel Creek processor, Intel Centerton processor or
910 Intel Quark X1000 SoC.
912 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
913 powered by the core power rail and are turned off during sleep
914 modes (S3 and higher). The remaining four GPIOs are powered by
915 the Intel SCH suspend power supply. These GPIOs remain
916 active during S3. The suspend-powered GPIOs can be used to wake the
917 system from the Suspend-to-RAM state.
919 The Intel Tunnel Creek processor has 5 GPIOs powered by the
920 core power rail and 9 from suspend power supply.
922 The Intel Centerton processor has a total of 30 GPIO pins.
923 Twenty-one are powered by the core power rail and 9 from the
924 suspend power supply.
926 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
927 power well and 6 from the suspend power well.
930 tristate "SMSC SCH311x SuperI/O GPIO"
932 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
933 SCH3116 "Super I/O" chipsets.
935 To compile this driver as a module, choose M here: the module will
936 be called gpio-sch311x.
939 tristate "TS-5500 DIO blocks and compatibles"
940 depends on TS5500 || COMPILE_TEST
942 This driver supports Digital I/O exposed by pin blocks found on some
943 Technologic Systems platforms. It includes, but is not limited to, 3
944 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
948 tristate "Winbond Super I/O GPIO support"
951 This option enables support for GPIOs found on Winbond Super I/O
953 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
956 You will need to provide a module parameter "gpios", or a
957 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
958 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
960 To compile this driver as a module, choose M here: the module will
961 be called gpio-winbond.
964 tristate "WinSystems WS16C48 GPIO support"
966 select GPIOLIB_IRQCHIP
968 Enables GPIO support for the WinSystems WS16C48. The base port
969 addresses for the devices may be configured via the base module
970 parameter. The interrupt line numbers for the devices may be
971 configured via the irq module parameter.
975 menu "I2C GPIO expanders"
979 tristate "ADP5588 I2C GPIO expander"
981 This option enables support for 18 GPIOs found
982 on Analog Devices ADP5588 GPIO Expanders.
984 config GPIO_ADP5588_IRQ
985 bool "Interrupt controller support for ADP5588"
986 depends on GPIO_ADP5588=y
987 select GPIOLIB_IRQCHIP
989 Say yes here to enable the adp5588 to be used as an interrupt
990 controller. It requires the driver to be built in the kernel.
993 tristate "Avionic Design N-bit GPIO expander"
995 select GPIOLIB_IRQCHIP
997 This option enables support for N GPIOs found on Avionic Design
998 I2C GPIO expanders. The register space will be extended by powers
999 of two, so the controller will need to accommodate for that. For
1000 example: if a controller provides 48 pins, 6 registers will be
1001 enough to represent all pins, but the driver will assume a
1002 register layout for 64 pins (8 registers).
1005 tristate "Gateworks PLD GPIO Expander"
1008 Say yes here to provide access to the Gateworks I2C PLD GPIO
1009 Expander. This is used at least on the Cambria GW2358-4.
1012 tristate "Maxim MAX7300 GPIO expander"
1015 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1018 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1020 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1021 Port Expanders. Each IO port on these chips has a fixed role of
1022 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1023 Input and Output (designed by 'P'). The combinations are listed
1026 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1027 max7322 (4I4O), max7323 (4P4O)
1029 16 bits: max7324 (8I8O), max7325 (8P8O),
1030 max7326 (4I12O), max7327 (4P12O)
1032 Board setup code must specify the model to use, and the start
1033 number for these GPIOs.
1035 config GPIO_MAX732X_IRQ
1036 bool "Interrupt controller support for MAX732x"
1037 depends on GPIO_MAX732X=y
1038 select GPIOLIB_IRQCHIP
1040 Say yes here to enable the max732x to be used as an interrupt
1041 controller. It requires the driver to be built in the kernel.
1044 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1047 Say yes here to provide access to several register-oriented
1048 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1051 4 bits: pca9536, pca9537
1053 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1054 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1056 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1061 40 bits: pca9505, pca9698
1063 config GPIO_PCA953X_IRQ
1064 bool "Interrupt controller support for PCA953x"
1065 depends on GPIO_PCA953X
1066 select GPIOLIB_IRQCHIP
1068 Say yes here to enable the pca953x to be used as an interrupt
1072 tristate "PCA9570 4-Bit I2C GPO expander"
1074 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1076 To compile this driver as a module, choose M here: the module will
1077 be called gpio-pca9570.
1080 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1081 select GPIOLIB_IRQCHIP
1084 Say yes here to provide access to most "quasi-bidirectional" I2C
1085 GPIO expanders used for additional digital outputs or inputs.
1086 Most of these parts are from NXP, though TI is a second source for
1087 some of them. Compatible models include:
1089 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1090 pca9670, pca9672, pca9674, pca9674a,
1093 16 bits: pcf8575, pcf8575c, pca8575,
1094 pca9671, pca9673, pca9675
1096 Your board setup code will need to declare the expanders in
1097 use, and assign numbers to the GPIOs they expose. Those GPIOs
1098 can then be used from drivers and other kernel code, just like
1099 other GPIOs, but only accessible from task contexts.
1101 This driver provides an in-kernel interface to those GPIOs using
1102 platform-neutral GPIO calls.
1104 config GPIO_TPIC2810
1105 tristate "TPIC2810 8-Bit I2C GPO expander"
1107 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1109 To compile this driver as a module, choose M here: the module will
1110 be called gpio-tpic2810.
1113 tristate "Technologic Systems FPGA I2C GPIO"
1114 depends on SOC_IMX6 || COMPILE_TEST
1117 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1118 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1122 menu "MFD GPIO expanders"
1125 tristate "GPIO Support for ADP5520 PMIC"
1126 depends on PMIC_ADP5520
1128 This option enables support for on-chip GPIO found
1129 on Analog Devices ADP5520 PMICs.
1131 config GPIO_ALTERA_A10SR
1132 tristate "Altera Arria10 System Resource GPIO"
1133 depends on MFD_ALTERA_A10SR
1135 Driver for Arria10 Development Kit GPIO expansion which
1136 includes reads of pushbuttons and DIP switches as well
1140 tristate "Wolfson Microelectronics Arizona class devices"
1141 depends on MFD_ARIZONA
1143 Support for GPIOs on Wolfson Arizona class devices.
1146 tristate "ROHM BD71815 PMIC GPIO support"
1147 depends on MFD_ROHM_BD71828
1149 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1150 available on the ROHM PMIC.
1152 This driver can also be built as a module. If so, the module
1153 will be called gpio-bd71815.
1156 tristate "ROHM BD71828 GPIO support"
1157 depends on MFD_ROHM_BD71828
1159 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1160 available on the ROHM PMIC in total. The GPIOs are limited to
1161 outputs only and pins must be configured to GPIO outputs by
1162 OTP. Enable this only if you want to use these pins as outputs.
1164 This driver can also be built as a module. If so, the module
1165 will be called gpio-bd71828.
1167 config GPIO_BD9571MWV
1168 tristate "ROHM BD9571 GPIO support"
1169 depends on MFD_BD9571MWV
1171 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1172 available on the ROHM PMIC in total, both of which can also
1173 generate interrupts.
1175 This driver can also be built as a module. If so, the module
1176 will be called gpio-bd9571mwv.
1178 config GPIO_CRYSTAL_COVE
1179 tristate "GPIO support for Crystal Cove PMIC"
1180 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1181 select GPIOLIB_IRQCHIP
1183 Support for GPIO pins on Crystal Cove PMIC.
1185 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1188 This driver can also be built as a module. If so, the module will be
1189 called gpio-crystalcove.
1192 tristate "AMD CS5535/CS5536 GPIO support"
1193 depends on X86 || MIPS || COMPILE_TEST
1194 depends on MFD_CS5535
1196 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1197 can be used for quite a number of things. The CS5535/6 is found on
1198 AMD Geode and Lemote Yeeloong devices.
1203 tristate "Dialog DA9052 GPIO"
1204 depends on PMIC_DA9052
1206 Say yes here to enable the GPIO driver for the DA9052 chip.
1209 tristate "Dialog Semiconductor DA9055 GPIO"
1210 depends on MFD_DA9055
1212 Say yes here to enable the GPIO driver for the DA9055 chip.
1214 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1215 be controlled by this driver.
1217 If driver is built as a module it will be called gpio-da9055.
1220 tristate "Diolan DLN2 GPIO support"
1222 select GPIOLIB_IRQCHIP
1225 Select this option to enable GPIO driver for the Diolan DLN2
1228 This driver can also be built as a module. If so, the module
1229 will be called gpio-dln2.
1232 bool "HTC EGPIO support"
1235 This driver supports the CPLD egpio chip present on
1236 several HTC phones. It provides basic support for input
1237 pins, output pins, and IRQs.
1239 config GPIO_JANZ_TTL
1240 tristate "Janz VMOD-TTL Digital IO Module"
1241 depends on MFD_JANZ_CMODIO
1243 This enables support for the Janz VMOD-TTL Digital IO module.
1244 This driver provides support for driving the pins in output
1245 mode only. Input mode is not supported.
1248 tristate "Kontron ETX / COMexpress GPIO"
1249 depends on MFD_KEMPLD
1251 This enables support for the PLD GPIO interface on some Kontron ETX
1252 and COMexpress (ETXexpress) modules.
1254 This driver can also be built as a module. If so, the module will be
1258 tristate "TI/National Semiconductor LP3943 GPIO expander"
1259 depends on MFD_LP3943
1261 GPIO driver for LP3943 MFD.
1262 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1263 Open drain outputs are required for this usage.
1266 tristate "TI LP873X GPO"
1267 depends on MFD_TI_LP873X
1269 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1272 This driver can also be built as a module. If so, the module will be
1276 tristate "TI LP87565 GPIO"
1277 depends on MFD_TI_LP87565
1279 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1282 This driver can also be built as a module. If so, the module will be
1283 called gpio-lp87565.
1286 tristate "Cirrus Logic Madera class codecs"
1287 depends on PINCTRL_MADERA
1289 Support for GPIOs on Cirrus Logic Madera class codecs.
1291 config GPIO_MAX77620
1292 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1293 depends on MFD_MAX77620
1294 select GPIOLIB_IRQCHIP
1296 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1297 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1298 driver also provides interrupt support for each of the GPIOs.
1299 Say yes here to enable the max77620 to be used as GPIO controller.
1301 config GPIO_MAX77650
1302 tristate "Maxim MAX77650/77651 GPIO support"
1303 depends on MFD_MAX77650
1305 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1306 These chips have a single pin that can be configured as GPIO.
1309 bool "TI PALMAS series PMICs GPIO"
1310 depends on MFD_PALMAS
1312 Select this option to enable GPIO driver for the TI PALMAS
1316 bool "RICOH RC5T583 GPIO"
1317 depends on MFD_RC5T583
1319 Select this option to enable GPIO driver for the Ricoh RC5T583
1321 This driver provides the support for driving/reading the GPIO pins
1322 of RC5T583 device through standard GPIO library.
1324 config GPIO_SL28CPLD
1325 tristate "Kontron sl28cpld GPIO support"
1326 depends on MFD_SL28CPLD || COMPILE_TEST
1328 select GPIOLIB_IRQCHIP
1331 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1333 This driver can also be built as a module. If so, the module will be
1334 called gpio-sl28cpld.
1338 depends on MFD_STMPE
1340 select GPIOLIB_IRQCHIP
1342 This enables support for the GPIOs found on the STMPE I/O
1346 bool "TC3589X GPIOs"
1347 depends on MFD_TC3589X
1349 select GPIOLIB_IRQCHIP
1351 This enables support for the GPIOs found on the TC3589X
1354 config GPIO_TIMBERDALE
1355 bool "Support for timberdale GPIO IP"
1356 depends on MFD_TIMBERDALE
1358 Add support for the GPIO IP in the timberdale FPGA.
1360 config GPIO_TN48M_CPLD
1361 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1362 depends on MFD_TN48M_CPLD
1365 This enables support for the GPIOs found on the Delta
1366 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1367 they are input-only or output-only type.
1369 This driver can also be built as a module. If so, the
1370 module will be called gpio-tn48m.
1372 config GPIO_TPS65086
1373 tristate "TI TPS65086 GPO"
1374 depends on MFD_TPS65086
1376 This driver supports the GPO on TI TPS65086x PMICs.
1378 config GPIO_TPS65218
1379 tristate "TPS65218 GPIO"
1380 depends on MFD_TPS65218
1382 Select this option to enable GPIO driver for the TPS65218
1385 config GPIO_TPS6586X
1386 bool "TPS6586X GPIO"
1387 depends on MFD_TPS6586X
1389 Select this option to enable GPIO driver for the TPS6586X
1392 config GPIO_TPS65910
1393 bool "TPS65910 GPIO"
1394 depends on MFD_TPS65910
1396 Select this option to enable GPIO driver for the TPS65910
1399 config GPIO_TPS65912
1400 tristate "TI TPS65912 GPIO"
1401 depends on MFD_TPS65912
1403 This driver supports TPS65912 GPIO chip.
1405 config GPIO_TPS68470
1406 tristate "TPS68470 GPIO"
1407 depends on INTEL_SKL_INT3472
1409 Select this option to enable GPIO driver for the TPS68470
1411 There are 7 GPIOs and few sensor-related GPIOs supported
1412 by the TPS68470. While the 7 GPIOs can be configured as
1413 input or output as appropriate, the sensor related GPIOs
1414 are "output only" GPIOs.
1417 tristate "TQ-Systems QTMX86 GPIO"
1418 depends on MFD_TQMX86 || COMPILE_TEST
1419 depends on HAS_IOPORT_MAP
1420 select GPIOLIB_IRQCHIP
1422 This driver supports GPIO on the TQMX86 IO controller.
1425 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1426 depends on TWL4030_CORE
1428 Say yes here to access the GPIO signals of various multi-function
1429 power management chips from Texas Instruments.
1432 tristate "TWL6040 GPO"
1433 depends on TWL6040_CORE
1435 Say yes here to access the GPO signals of twl6040
1436 audio chip from Texas Instruments.
1439 tristate "Philips UCB1400 GPIO"
1440 depends on UCB1400_CORE
1442 This enables support for the Philips UCB1400 GPIO pins.
1443 The UCB1400 is an AC97 audio codec.
1445 config GPIO_WHISKEY_COVE
1446 tristate "GPIO support for Whiskey Cove PMIC"
1447 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1448 select GPIOLIB_IRQCHIP
1450 Support for GPIO pins on Whiskey Cove PMIC.
1452 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1455 This driver can also be built as a module. If so, the module will be
1459 tristate "WM831x GPIOs"
1460 depends on MFD_WM831X
1462 Say yes here to access the GPIO signals of WM831x power management
1463 chips from Wolfson Microelectronics.
1466 tristate "WM8350 GPIOs"
1467 depends on MFD_WM8350
1469 Say yes here to access the GPIO signals of WM8350 power management
1470 chips from Wolfson Microelectronics.
1473 tristate "WM8994 GPIOs"
1474 depends on MFD_WM8994
1476 Say yes here to access the GPIO signals of WM8994 audio hub
1477 CODECs from Wolfson Microelectronics.
1481 menu "PCI GPIO expanders"
1485 tristate "AMD 8111 GPIO driver"
1486 depends on X86 || COMPILE_TEST
1487 depends on HAS_IOPORT_MAP
1489 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1491 Note that usually system firmware/ACPI handles GPIO pins on their
1492 own and users might easily break their systems with uncareful usage
1498 tristate "BT8XX GPIO abuser"
1499 depends on VIDEO_BT848=n
1501 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1502 as a cheap PCI GPIO card.
1504 This chip can be found on Miro, Hauppauge and STB TV-cards.
1506 The card needs to be physically altered for using it as a
1507 GPIO card. For more information on how to build a GPIO card
1508 from a BT8xx TV card, see the documentation file at
1509 Documentation/driver-api/gpio/bt8xxgpio.rst
1513 config GPIO_MERRIFIELD
1514 tristate "Intel Merrifield GPIO support"
1515 depends on X86_INTEL_MID
1516 select GPIOLIB_IRQCHIP
1518 Say Y here to support Intel Merrifield GPIO.
1521 tristate "Mellanox BlueField SoC GPIO"
1522 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1525 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1528 tristate "Mellanox BlueField 2 SoC GPIO"
1529 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1532 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1535 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1536 depends on X86 || COMPILE_TEST
1537 select GENERIC_IRQ_CHIP
1539 ML7213 is companion chip for Intel Atom E6xx series.
1540 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1541 Hub) which is for IVI (In-Vehicle Infotainment) use.
1542 This driver can access the IOH's GPIO device.
1545 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1546 depends on X86_32 || MIPS || COMPILE_TEST
1547 select GENERIC_IRQ_CHIP
1549 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1550 which is an IOH (Input/Output Hub) for x86 embedded processor.
1551 This driver can access PCH GPIO device.
1553 This driver also can be used for LAPIS Semiconductor IOH (Input/
1554 Output Hub), ML7223 and ML7831.
1555 ML7223 IOH is for MP (Media Phone) use.
1556 ML7831 IOH is for general purpose use.
1557 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1558 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1560 config GPIO_PCI_IDIO_16
1561 tristate "ACCES PCI-IDIO-16 GPIO support"
1562 select GPIOLIB_IRQCHIP
1564 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1565 generated when any of the inputs change state (low to high or high to
1566 low). Input filter control is not supported by this driver, and the
1567 input filters are deactivated by this driver.
1569 config GPIO_PCIE_IDIO_24
1570 tristate "ACCES PCIe-IDIO-24 GPIO support"
1571 select GPIOLIB_IRQCHIP
1573 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1574 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1575 when any of the inputs change state (low to high or high to low).
1576 Input filter control is not supported by this driver, and the input
1577 filters are deactivated by this driver.
1580 tristate "RDC R-321x GPIO support"
1584 Support for the RDC R321x SoC GPIOs over southbridge
1585 PCI configuration space.
1587 config GPIO_SODAVILLE
1588 bool "Intel Sodaville GPIO support"
1589 depends on X86 && OF
1591 select GENERIC_IRQ_CHIP
1593 Say Y here to support Intel Sodaville GPIO.
1597 menu "SPI GPIO expanders"
1598 depends on SPI_MASTER
1601 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1604 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1605 shift registers. This driver can be used to provide access
1606 to more GPIO outputs.
1608 config GPIO_MAX3191X
1609 tristate "Maxim MAX3191x industrial serializer"
1612 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1613 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1614 chip to make 8 digital 24V inputs available via SPI. Supports
1615 CRC checksums to guard against electromagnetic interference,
1616 as well as undervoltage and overtemperature detection.
1619 tristate "Maxim MAX7301 GPIO expander"
1622 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1625 tristate "Freescale MC33880 high-side/low-side switch"
1627 SPI driver for Freescale MC33880 high-side/low-side switch.
1628 This provides GPIO interface supporting inputs and outputs.
1631 tristate "Generic parallel-in/serial-out shift register"
1633 GPIO driver for SPI compatible parallel-in/serial-out shift
1634 registers. These are input only devices.
1637 tristate "EXAR XRA1403 16-bit GPIO expander"
1640 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1643 tristate "Turris Mox Moxtet bus GPIO expander"
1646 Say yes here if you are building for the Turris Mox router.
1647 This is the driver needed for configuring the GPIOs via the Moxtet
1648 bus. For example the Mox module with SFP cage needs this driver
1649 so that phylink can use corresponding GPIOs.
1653 menu "USB GPIO expanders"
1656 config GPIO_VIPERBOARD
1657 tristate "Viperboard GPIO a & b support"
1658 depends on MFD_VIPERBOARD
1660 Say yes here to access the GPIO signals of Nano River
1661 Technologies Viperboard. There are two GPIO chips on the
1662 board: gpioa and gpiob.
1663 See viperboard API specification and Nano
1664 River Tech's viperboard.h for detailed meaning
1665 of the module parameters.
1669 menu "Virtual GPIO drivers"
1671 config GPIO_AGGREGATOR
1672 tristate "GPIO Aggregator"
1674 Say yes here to enable the GPIO Aggregator, which provides a way to
1675 aggregate existing GPIO lines into a new virtual GPIO chip.
1676 This can serve the following purposes:
1677 - Assign permissions for a collection of GPIO lines to a user,
1678 - Export a collection of GPIO lines to a virtual machine,
1679 - Provide a generic driver for a GPIO-operated device in an
1680 industrial control context, to be operated from userspace using
1681 the GPIO chardev interface.
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