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 ARM # For <asm/mach-types.h>
357 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.
367 tristate "Xylon LogiCVC GPIO support"
368 depends on MFD_SYSCON && OF
370 Say yes here to support GPIO functionality of the Xylon LogiCVC
371 programmable logic block.
374 bool "Loongson-2/3 GPIO support"
375 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
377 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
380 tristate "NXP LPC18XX/43XX GPIO support"
381 default y if ARCH_LPC18XX
382 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
383 select IRQ_DOMAIN_HIERARCHY
385 Select this option to enable GPIO driver for
386 NXP LPC18XX/43XX devices.
389 tristate "NXP LPC32XX GPIO support"
390 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
392 Select this option to enable GPIO driver for
396 tristate "GPIO support for Fujitsu MB86S7x Platforms"
398 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
401 tristate "MEN 16Z127 GPIO support"
405 Say yes here to support the MEN 16Z127 GPIO Controller.
407 config GPIO_MM_LANTIQ
408 bool "Lantiq Memory mapped GPIOs"
409 depends on LANTIQ && SOC_XWAY
411 This enables support for memory mapped GPIOs on the External Bus Unit
412 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
413 created by attaching a 16-bit latch to the bus.
417 depends on PPC_MPC52xx
420 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
421 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
422 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
427 Say Y here if you're going to use hardware that connects to the
428 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
431 bool "Mediatek MT7621 GPIO Support"
432 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
435 select GPIOLIB_IRQCHIP
437 Say yes here to support the Mediatek MT7621 SoC GPIO device.
441 depends on PLAT_ORION || ARCH_MVEBU
443 select GENERIC_IRQ_CHIP
447 tristate "i.MX GPIO support"
448 depends on ARCH_MXC || COMPILE_TEST
450 select GENERIC_IRQ_CHIP
453 bool "Freescale MXS GPIO support" if COMPILE_TEST
454 depends on ARCH_MXS || COMPILE_TEST
455 default y if ARCH_MXS
457 select GENERIC_IRQ_CHIP
460 tristate "Cavium OCTEON GPIO"
461 depends on CAVIUM_OCTEON_SOC
464 Say yes here to support the on-chip GPIO lines on the OCTEON
468 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
469 default y if ARCH_OMAP
471 select GENERIC_IRQ_CHIP
472 select GPIOLIB_IRQCHIP
474 Say yes here to enable GPIO support for TI OMAP SoCs.
477 tristate "PrimeCell PL061 GPIO support"
480 select GPIOLIB_IRQCHIP
482 Say yes here to support the PrimeCell PL061 GPIO device.
484 config GPIO_PMIC_EIC_SPRD
485 tristate "Spreadtrum PMIC EIC support"
486 depends on MFD_SC27XX_PMIC || COMPILE_TEST
488 select GPIOLIB_IRQCHIP
490 Say yes here to support Spreadtrum PMIC EIC device.
493 bool "PXA GPIO support"
494 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
496 Say yes here to support the PXA GPIO device.
499 tristate "Renesas R-Car and RZ/G GPIO support"
500 depends on ARCH_RENESAS || COMPILE_TEST
501 select GPIOLIB_IRQCHIP
503 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
506 bool "RDA Micro GPIO controller support"
507 depends on ARCH_RDA || COMPILE_TEST
510 select GPIOLIB_IRQCHIP
512 Say Y here to support RDA Micro GPIO controller.
514 config GPIO_REALTEK_OTTO
515 tristate "Realtek Otto GPIO support"
516 depends on MACH_REALTEK_RTL
517 default MACH_REALTEK_RTL
519 select GPIOLIB_IRQCHIP
521 The GPIO controller on the Otto MIPS platform supports up to two
522 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
523 are grouped in four 8-bit wide ports.
525 When built as a module, the module will be called realtek_otto_gpio.
530 A 32-bit single register GPIO fixed in/out implementation. This
531 can be used to represent any register as a set of GPIO signals.
534 tristate "Rockchip GPIO support"
535 depends on ARCH_ROCKCHIP || COMPILE_TEST
536 select GENERIC_IRQ_CHIP
537 select GPIOLIB_IRQCHIP
538 default ARCH_ROCKCHIP
540 Say yes here to support GPIO on Rockchip SoCs.
542 config GPIO_SAMA5D2_PIOBU
543 tristate "SAMA5D2 PIOBU GPIO support"
544 depends on MFD_SYSCON
548 Say yes here to use the PIOBU pins as GPIOs.
550 PIOBU pins on the SAMA5D2 can be used as GPIOs.
551 The difference from regular GPIOs is that they
552 maintain their value during backup/self-refresh.
555 bool "SiFive GPIO support"
557 select IRQ_DOMAIN_HIERARCHY
559 select GPIOLIB_IRQCHIP
562 Say yes here to support the GPIO device on SiFive SoCs.
565 tristate "SIOX GPIO support"
567 select GPIOLIB_IRQCHIP
569 Say yes here to support SIOX I/O devices. These are units connected
570 via a SIOX bus and have a number of fixed-direction I/O lines.
572 config GPIO_SNPS_CREG
573 bool "Synopsys GPIO via CREG (Control REGisters) driver"
574 depends on ARC || COMPILE_TEST
577 This driver supports GPIOs via CREG on various Synopsys SoCs.
578 This is a single-register MMIO GPIO driver for complex cases
579 where only several fields in register belong to GPIO lines and
580 each GPIO line owns a field with different length and on/off value.
582 config GPIO_SPEAR_SPICS
583 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
584 depends on PLAT_SPEAR
585 select GENERIC_IRQ_CHIP
587 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
590 tristate "Spreadtrum GPIO support"
591 depends on ARCH_SPRD || COMPILE_TEST
593 select GPIOLIB_IRQCHIP
595 Say yes here to support Spreadtrum GPIO device.
598 bool "STA2x11/ConneXt GPIO support"
599 depends on MFD_STA2X11
600 select GENERIC_IRQ_CHIP
602 Say yes here to support the STA2x11/ConneXt GPIO device.
603 The GPIO module has 128 GPIO pins with alternate functions.
606 bool "XWAY STP GPIOs"
607 depends on SOC_XWAY || COMPILE_TEST
610 This enables support for the Serial To Parallel (STP) unit found on
611 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
612 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
613 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
617 tristate "GPIO based on SYSCON"
618 depends on MFD_SYSCON && OF
620 Say yes here to support GPIO functionality though SYSCON driver.
625 select GENERIC_IRQ_CHIP
629 tristate "NVIDIA Tegra GPIO support"
631 depends on ARCH_TEGRA || COMPILE_TEST
633 select GPIOLIB_IRQCHIP
634 select IRQ_DOMAIN_HIERARCHY
636 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
639 tristate "NVIDIA Tegra186 GPIO support"
640 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
641 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
643 select GPIOLIB_IRQCHIP
644 select IRQ_DOMAIN_HIERARCHY
646 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
649 tristate "TS-4800 DIO blocks and compatibles"
651 depends on SOC_IMX51 || COMPILE_TEST
654 This driver support TS-4800 FPGA GPIO controllers.
657 tristate "Cavium ThunderX/OCTEON-TX GPIO"
658 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
660 select GPIOLIB_IRQCHIP
661 select IRQ_DOMAIN_HIERARCHY
662 select IRQ_FASTEOI_HIERARCHY_HANDLERS
664 Say yes here to support the on-chip GPIO lines on the ThunderX
665 and OCTEON-TX families of SoCs.
668 tristate "UniPhier GPIO support"
669 depends on ARCH_UNIPHIER || COMPILE_TEST
671 select IRQ_DOMAIN_HIERARCHY
673 Say yes here to support UniPhier GPIOs.
677 depends on ARCH_MXC && SOC_VF610
678 select GPIOLIB_IRQCHIP
680 Say yes here to support Vybrid vf610 GPIOs.
683 tristate "Toshiba Visconti GPIO support"
684 depends on ARCH_VISCONTI || COMPILE_TEST
686 select GPIOLIB_IRQCHIP
688 select IRQ_DOMAIN_HIERARCHY
690 Say yes here to support GPIO on Tohisba Visconti.
693 tristate "NEC VR4100 series General-purpose I/O Unit support"
694 depends on CPU_VR41XX
696 Say yes here to support the NEC VR4100 series General-purpose I/O Unit.
699 tristate "VIA VX855/VX875 GPIO"
700 depends on (X86 || COMPILE_TEST) && PCI
704 Support access to the VX855/VX875 GPIO lines through the GPIO library.
706 This driver provides common support for accessing the device.
707 Additional drivers must be enabled in order to use the
708 functionality of the device.
711 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
712 depends on MFD_WCD934X && OF_GPIO
714 This driver is to support GPIO block found on the Qualcomm Technologies
715 Inc WCD9340/WCD9341 Audio Codec.
718 bool "APM X-Gene GPIO controller support"
719 depends on ARM64 && OF_GPIO
721 This driver is to support the GPIO block within the APM X-Gene SoC
722 platform's generic flash controller. The GPIO pins are muxed with
723 the generic flash controller's address and data pins. Say yes
724 here to enable the GFC GPIO functionality.
727 tristate "APM X-Gene GPIO standby controller support"
728 depends on (ARCH_XGENE || COMPILE_TEST)
730 select GPIOLIB_IRQCHIP
731 select IRQ_DOMAIN_HIERARCHY
733 This driver supports the GPIO block within the APM X-Gene
734 Standby Domain. Say yes here to enable the GPIO functionality.
737 tristate "Xilinx GPIO support"
738 select GPIOLIB_IRQCHIP
741 Say yes here to support the Xilinx FPGA GPIO device.
744 tristate "Cavium ThunderX2 GPIO support"
745 depends on ARCH_THUNDER2 || COMPILE_TEST
746 select GPIOLIB_IRQCHIP
748 This driver provides support for GPIO interface on Cavium's ThunderX2
749 CN99XX SoCs (Originally from Netlogic XLP).
754 bool "Xtensa GPIO32 support"
756 depends on HAVE_XTENSA_GPIO32
759 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
760 and EXPSTATE (output) ports.
763 bool "LSI ZEVIO SoC memory mapped GPIOs"
764 depends on ARM && OF_GPIO
766 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
769 tristate "Xilinx Zynq GPIO support"
770 depends on ARCH_ZYNQ || ARCH_ZYNQMP
771 select GPIOLIB_IRQCHIP
773 Say yes here to support Xilinx Zynq GPIO controller.
775 config GPIO_ZYNQMP_MODEPIN
776 tristate "ZynqMP ps-mode pin GPIO configuration driver"
777 depends on ZYNQMP_FIRMWARE
778 default ZYNQMP_FIRMWARE
780 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
783 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
784 is 4-bits boot mode pins. It sets and gets the status of
785 the ps-mode pin. Every pin can be configured as input/output.
787 config GPIO_LOONGSON1
788 tristate "Loongson1 GPIO support"
789 depends on MACH_LOONGSON32
792 Say Y or M here to support GPIO on Loongson1 SoCs.
795 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
797 This option enables driver for GPIO on AMD's Fusion Controller Hub,
798 as found on G-series SOCs (e.g. GX-412TC).
800 Note: This driver doesn't register itself automatically, as it
801 needs to be provided with platform-specific configuration.
802 (See e.g. CONFIG_PCENGINES_APU2.)
805 bool "MStar MSC313 GPIO support"
806 depends on ARCH_MSTARV7
808 select GPIOLIB_IRQCHIP
809 select IRQ_DOMAIN_HIERARCHY
811 Say Y here to support the main GPIO block on MStar/SigmaStar
815 tristate "IDT 79RC3243X GPIO support"
816 depends on MIKROTIK_RB532 || COMPILE_TEST
818 select GPIOLIB_IRQCHIP
820 Select this option to enable GPIO driver for
821 IDT 79RC3243X-based devices like Mikrotik RB532.
823 To compile this driver as a module, choose M here: the module will
824 be called gpio-idt3243x.
828 menu "Port-mapped I/O GPIO drivers"
829 depends on X86 # Unconditional I/O space access
831 config GPIO_104_DIO_48E
832 tristate "ACCES 104-DIO-48E GPIO support"
835 select GPIOLIB_IRQCHIP
837 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
838 104-DIO-24E). The base port addresses for the devices may be
839 configured via the base module parameter. The interrupt line numbers
840 for the devices may be configured via the irq module parameter.
842 config GPIO_104_IDIO_16
843 tristate "ACCES 104-IDIO-16 GPIO support"
846 select GPIOLIB_IRQCHIP
848 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
849 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
850 base port addresses for the devices may be configured via the base
851 module parameter. The interrupt line numbers for the devices may be
852 configured via the irq module parameter.
854 config GPIO_104_IDI_48
855 tristate "ACCES 104-IDI-48 GPIO support"
858 select GPIOLIB_IRQCHIP
860 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
861 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
862 the devices may be configured via the base module parameter. The
863 interrupt line numbers for the devices may be configured via the irq
867 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
869 This option enables support for GPIOs found on Fintek Super-I/O
870 chips F71869, F71869A, F71882FG, F71889F and F81866.
872 To compile this driver as a module, choose M here: the module will
873 be called f7188x-gpio.
876 tristate "Diamond Systems GPIO-MM GPIO support"
880 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
882 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
883 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
884 support for these 48 channels of digital I/O.
886 The base port addresses for the devices may be configured via the base
887 array module parameter.
890 tristate "IT87xx GPIO support"
892 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
894 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
895 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
898 To compile this driver as a module, choose M here: the module will
902 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
903 depends on (X86 || COMPILE_TEST) && ACPI
905 select GPIOLIB_IRQCHIP
907 Say yes here to support GPIO interface on Intel Poulsbo SCH,
908 Intel Tunnel Creek processor, Intel Centerton processor or
909 Intel Quark X1000 SoC.
911 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
912 powered by the core power rail and are turned off during sleep
913 modes (S3 and higher). The remaining four GPIOs are powered by
914 the Intel SCH suspend power supply. These GPIOs remain
915 active during S3. The suspend-powered GPIOs can be used to wake the
916 system from the Suspend-to-RAM state.
918 The Intel Tunnel Creek processor has 5 GPIOs powered by the
919 core power rail and 9 from suspend power supply.
921 The Intel Centerton processor has a total of 30 GPIO pins.
922 Twenty-one are powered by the core power rail and 9 from the
923 suspend power supply.
925 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
926 power well and 6 from the suspend power well.
929 tristate "SMSC SCH311x SuperI/O GPIO"
931 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
932 SCH3116 "Super I/O" chipsets.
934 To compile this driver as a module, choose M here: the module will
935 be called gpio-sch311x.
938 tristate "TS-5500 DIO blocks and compatibles"
939 depends on TS5500 || COMPILE_TEST
941 This driver supports Digital I/O exposed by pin blocks found on some
942 Technologic Systems platforms. It includes, but is not limited to, 3
943 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
947 tristate "Winbond Super I/O GPIO support"
950 This option enables support for GPIOs found on Winbond Super I/O
952 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
955 You will need to provide a module parameter "gpios", or a
956 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
957 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
959 To compile this driver as a module, choose M here: the module will
960 be called gpio-winbond.
963 tristate "WinSystems WS16C48 GPIO support"
965 select GPIOLIB_IRQCHIP
967 Enables GPIO support for the WinSystems WS16C48. The base port
968 addresses for the devices may be configured via the base module
969 parameter. The interrupt line numbers for the devices may be
970 configured via the irq module parameter.
974 menu "I2C GPIO expanders"
978 tristate "ADP5588 I2C GPIO expander"
980 This option enables support for 18 GPIOs found
981 on Analog Devices ADP5588 GPIO Expanders.
983 config GPIO_ADP5588_IRQ
984 bool "Interrupt controller support for ADP5588"
985 depends on GPIO_ADP5588=y
986 select GPIOLIB_IRQCHIP
988 Say yes here to enable the adp5588 to be used as an interrupt
989 controller. It requires the driver to be built in the kernel.
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.
1438 tristate "Philips UCB1400 GPIO"
1439 depends on UCB1400_CORE
1441 This enables support for the Philips UCB1400 GPIO pins.
1442 The UCB1400 is an AC97 audio codec.
1444 config GPIO_WHISKEY_COVE
1445 tristate "GPIO support for Whiskey Cove PMIC"
1446 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1447 select GPIOLIB_IRQCHIP
1449 Support for GPIO pins on Whiskey Cove PMIC.
1451 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1454 This driver can also be built as a module. If so, the module will be
1458 tristate "WM831x GPIOs"
1459 depends on MFD_WM831X
1461 Say yes here to access the GPIO signals of WM831x power management
1462 chips from Wolfson Microelectronics.
1465 tristate "WM8350 GPIOs"
1466 depends on MFD_WM8350
1468 Say yes here to access the GPIO signals of WM8350 power management
1469 chips from Wolfson Microelectronics.
1472 tristate "WM8994 GPIOs"
1473 depends on MFD_WM8994
1475 Say yes here to access the GPIO signals of WM8994 audio hub
1476 CODECs from Wolfson Microelectronics.
1480 menu "PCI GPIO expanders"
1484 tristate "AMD 8111 GPIO driver"
1485 depends on X86 || COMPILE_TEST
1486 depends on HAS_IOPORT_MAP
1488 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1490 Note that usually system firmware/ACPI handles GPIO pins on their
1491 own and users might easily break their systems with uncareful usage
1497 tristate "BT8XX GPIO abuser"
1498 depends on VIDEO_BT848=n
1500 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1501 as a cheap PCI GPIO card.
1503 This chip can be found on Miro, Hauppauge and STB TV-cards.
1505 The card needs to be physically altered for using it as a
1506 GPIO card. For more information on how to build a GPIO card
1507 from a BT8xx TV card, see the documentation file at
1508 Documentation/driver-api/gpio/bt8xxgpio.rst
1512 config GPIO_MERRIFIELD
1513 tristate "Intel Merrifield GPIO support"
1514 depends on X86_INTEL_MID
1515 select GPIOLIB_IRQCHIP
1517 Say Y here to support Intel Merrifield GPIO.
1520 tristate "Mellanox BlueField SoC GPIO"
1521 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1524 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1527 tristate "Mellanox BlueField 2 SoC GPIO"
1528 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1531 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1534 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1535 depends on X86 || COMPILE_TEST
1536 select GENERIC_IRQ_CHIP
1538 ML7213 is companion chip for Intel Atom E6xx series.
1539 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1540 Hub) which is for IVI (In-Vehicle Infotainment) use.
1541 This driver can access the IOH's GPIO device.
1544 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1545 depends on X86_32 || MIPS || COMPILE_TEST
1546 select GENERIC_IRQ_CHIP
1548 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1549 which is an IOH (Input/Output Hub) for x86 embedded processor.
1550 This driver can access PCH GPIO device.
1552 This driver also can be used for LAPIS Semiconductor IOH (Input/
1553 Output Hub), ML7223 and ML7831.
1554 ML7223 IOH is for MP (Media Phone) use.
1555 ML7831 IOH is for general purpose use.
1556 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1557 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1559 config GPIO_PCI_IDIO_16
1560 tristate "ACCES PCI-IDIO-16 GPIO support"
1561 select GPIOLIB_IRQCHIP
1563 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1564 generated when any of the inputs change state (low to high or high to
1565 low). Input filter control is not supported by this driver, and the
1566 input filters are deactivated by this driver.
1568 config GPIO_PCIE_IDIO_24
1569 tristate "ACCES PCIe-IDIO-24 GPIO support"
1570 select GPIOLIB_IRQCHIP
1572 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1573 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1574 when any of the inputs change state (low to high or high to low).
1575 Input filter control is not supported by this driver, and the input
1576 filters are deactivated by this driver.
1579 tristate "RDC R-321x GPIO support"
1583 Support for the RDC R321x SoC GPIOs over southbridge
1584 PCI configuration space.
1586 config GPIO_SODAVILLE
1587 bool "Intel Sodaville GPIO support"
1588 depends on X86 && OF
1590 select GENERIC_IRQ_CHIP
1592 Say Y here to support Intel Sodaville GPIO.
1596 menu "SPI GPIO expanders"
1597 depends on SPI_MASTER
1600 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1603 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1604 shift registers. This driver can be used to provide access
1605 to more GPIO outputs.
1607 config GPIO_MAX3191X
1608 tristate "Maxim MAX3191x industrial serializer"
1611 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1612 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1613 chip to make 8 digital 24V inputs available via SPI. Supports
1614 CRC checksums to guard against electromagnetic interference,
1615 as well as undervoltage and overtemperature detection.
1618 tristate "Maxim MAX7301 GPIO expander"
1621 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1624 tristate "Freescale MC33880 high-side/low-side switch"
1626 SPI driver for Freescale MC33880 high-side/low-side switch.
1627 This provides GPIO interface supporting inputs and outputs.
1630 tristate "Generic parallel-in/serial-out shift register"
1632 GPIO driver for SPI compatible parallel-in/serial-out shift
1633 registers. These are input only devices.
1636 tristate "EXAR XRA1403 16-bit GPIO expander"
1639 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1642 tristate "Turris Mox Moxtet bus GPIO expander"
1645 Say yes here if you are building for the Turris Mox router.
1646 This is the driver needed for configuring the GPIOs via the Moxtet
1647 bus. For example the Mox module with SFP cage needs this driver
1648 so that phylink can use corresponding GPIOs.
1652 menu "USB GPIO expanders"
1655 config GPIO_VIPERBOARD
1656 tristate "Viperboard GPIO a & b support"
1657 depends on MFD_VIPERBOARD
1659 Say yes here to access the GPIO signals of Nano River
1660 Technologies Viperboard. There are two GPIO chips on the
1661 board: gpioa and gpiob.
1662 See viperboard API specification and Nano
1663 River Tech's viperboard.h for detailed meaning
1664 of the module parameters.
1668 menu "Virtual GPIO drivers"
1670 config GPIO_AGGREGATOR
1671 tristate "GPIO Aggregator"
1673 Say yes here to enable the GPIO Aggregator, which provides a way to
1674 aggregate existing GPIO lines into a new virtual GPIO chip.
1675 This can serve the following purposes:
1676 - Assign permissions for a collection of GPIO lines to a user,
1677 - Export a collection of GPIO lines to a virtual machine,
1678 - Provide a generic driver for a GPIO-operated device in an
1679 industrial control context, to be operated from userspace using
1680 the GPIO chardev interface.
1683 tristate "GPIO Testing Driver"
1686 This enables GPIO Testing driver, which provides a way to test GPIO
1687 subsystem through sysfs (or char device) and debugfs.
1688 User could use it through the script in
1689 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1693 tristate "VirtIO GPIO support"
1695 select GPIOLIB_IRQCHIP
1697 Say Y here to enable guest support for virtio-based GPIO controllers.
1699 These virtual GPIOs can be routed to real GPIOs or attached to
1700 simulators on the host (like QEMU).
1703 tristate "GPIO Simulator Module"
1707 This enables the GPIO simulator - a configfs-based GPIO testing