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 tristate "Intel IOP GPIO"
359 depends on ARCH_IOP32X || COMPILE_TEST
362 Say yes here to support the GPIO functionality of a number of Intel
363 IOP32X or IOP33X series of chips.
368 bool "Intel IXP4xx GPIO"
369 depends on ARCH_IXP4XX
372 select GPIOLIB_IRQCHIP
373 select IRQ_DOMAIN_HIERARCHY
375 Say yes here to support the GPIO functionality of a number of Intel
376 IXP4xx series of chips.
381 tristate "Xylon LogiCVC GPIO support"
382 depends on MFD_SYSCON && OF
384 Say yes here to support GPIO functionality of the Xylon LogiCVC
385 programmable logic block.
388 bool "Loongson-2/3 GPIO support"
389 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
391 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
394 tristate "NXP LPC18XX/43XX GPIO support"
395 default y if ARCH_LPC18XX
396 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
397 select IRQ_DOMAIN_HIERARCHY
399 Select this option to enable GPIO driver for
400 NXP LPC18XX/43XX devices.
403 tristate "NXP LPC32XX GPIO support"
404 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
406 Select this option to enable GPIO driver for
410 tristate "GPIO support for Fujitsu MB86S7x Platforms"
412 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
415 tristate "MEN 16Z127 GPIO support"
419 Say yes here to support the MEN 16Z127 GPIO Controller.
421 config GPIO_MM_LANTIQ
422 bool "Lantiq Memory mapped GPIOs"
423 depends on LANTIQ && SOC_XWAY
425 This enables support for memory mapped GPIOs on the External Bus Unit
426 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
427 created by attaching a 16-bit latch to the bus.
431 depends on PPC_MPC52xx
434 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
435 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
436 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
441 Say Y here if you're going to use hardware that connects to the
442 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
445 bool "Mediatek MT7621 GPIO Support"
446 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
449 select GPIOLIB_IRQCHIP
451 Say yes here to support the Mediatek MT7621 SoC GPIO device.
455 depends on PLAT_ORION || ARCH_MVEBU
457 select GENERIC_IRQ_CHIP
461 tristate "i.MX GPIO support"
462 depends on ARCH_MXC || COMPILE_TEST
464 select GENERIC_IRQ_CHIP
467 bool "Freescale MXS GPIO support" if COMPILE_TEST
468 depends on ARCH_MXS || COMPILE_TEST
469 default y if ARCH_MXS
471 select GENERIC_IRQ_CHIP
474 tristate "Cavium OCTEON GPIO"
475 depends on CAVIUM_OCTEON_SOC
478 Say yes here to support the on-chip GPIO lines on the OCTEON
482 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
483 default y if ARCH_OMAP
485 select GENERIC_IRQ_CHIP
486 select GPIOLIB_IRQCHIP
488 Say yes here to enable GPIO support for TI OMAP SoCs.
491 tristate "PrimeCell PL061 GPIO support"
494 select GPIOLIB_IRQCHIP
496 Say yes here to support the PrimeCell PL061 GPIO device.
498 config GPIO_PMIC_EIC_SPRD
499 tristate "Spreadtrum PMIC EIC support"
500 depends on MFD_SC27XX_PMIC || COMPILE_TEST
502 select GPIOLIB_IRQCHIP
504 Say yes here to support Spreadtrum PMIC EIC device.
507 bool "PXA GPIO support"
508 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
510 Say yes here to support the PXA GPIO device.
513 tristate "Renesas R-Car and RZ/G GPIO support"
514 depends on ARCH_RENESAS || COMPILE_TEST
515 select GPIOLIB_IRQCHIP
517 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
520 bool "RDA Micro GPIO controller support"
521 depends on ARCH_RDA || COMPILE_TEST
524 select GPIOLIB_IRQCHIP
526 Say Y here to support RDA Micro GPIO controller.
528 config GPIO_REALTEK_OTTO
529 tristate "Realtek Otto GPIO support"
530 depends on MACH_REALTEK_RTL
531 default MACH_REALTEK_RTL
533 select GPIOLIB_IRQCHIP
535 The GPIO controller on the Otto MIPS platform supports up to two
536 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
537 are grouped in four 8-bit wide ports.
539 When built as a module, the module will be called realtek_otto_gpio.
544 A 32-bit single register GPIO fixed in/out implementation. This
545 can be used to represent any register as a set of GPIO signals.
548 tristate "Rockchip GPIO support"
549 depends on ARCH_ROCKCHIP || COMPILE_TEST
550 select GENERIC_IRQ_CHIP
551 select GPIOLIB_IRQCHIP
552 default ARCH_ROCKCHIP
554 Say yes here to support GPIO on Rockchip SoCs.
556 config GPIO_SAMA5D2_PIOBU
557 tristate "SAMA5D2 PIOBU GPIO support"
558 depends on MFD_SYSCON
560 depends on ARCH_AT91 || COMPILE_TEST
563 Say yes here to use the PIOBU pins as GPIOs.
565 PIOBU pins on the SAMA5D2 can be used as GPIOs.
566 The difference from regular GPIOs is that they
567 maintain their value during backup/self-refresh.
570 bool "SiFive GPIO support"
572 select IRQ_DOMAIN_HIERARCHY
574 select GPIOLIB_IRQCHIP
577 Say yes here to support the GPIO device on SiFive SoCs.
580 tristate "SIOX GPIO support"
582 select GPIOLIB_IRQCHIP
584 Say yes here to support SIOX I/O devices. These are units connected
585 via a SIOX bus and have a number of fixed-direction I/O lines.
587 config GPIO_SNPS_CREG
588 bool "Synopsys GPIO via CREG (Control REGisters) driver"
589 depends on ARC || COMPILE_TEST
592 This driver supports GPIOs via CREG on various Synopsys SoCs.
593 This is a single-register MMIO GPIO driver for complex cases
594 where only several fields in register belong to GPIO lines and
595 each GPIO line owns a field with different length and on/off value.
597 config GPIO_SPEAR_SPICS
598 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
599 depends on PLAT_SPEAR
600 select GENERIC_IRQ_CHIP
602 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
605 tristate "Spreadtrum GPIO support"
606 depends on ARCH_SPRD || COMPILE_TEST
608 select GPIOLIB_IRQCHIP
610 Say yes here to support Spreadtrum GPIO device.
613 bool "XWAY STP GPIOs"
614 depends on SOC_XWAY || COMPILE_TEST
617 This enables support for the Serial To Parallel (STP) unit found on
618 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
619 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
620 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
624 tristate "GPIO based on SYSCON"
625 depends on MFD_SYSCON && OF
627 Say yes here to support GPIO functionality though SYSCON driver.
632 select GENERIC_IRQ_CHIP
636 tristate "NVIDIA Tegra GPIO support"
638 depends on ARCH_TEGRA || COMPILE_TEST
640 select GPIOLIB_IRQCHIP
641 select IRQ_DOMAIN_HIERARCHY
643 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
646 tristate "NVIDIA Tegra186 GPIO support"
647 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
648 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
650 select GPIOLIB_IRQCHIP
651 select IRQ_DOMAIN_HIERARCHY
653 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
656 tristate "TS-4800 DIO blocks and compatibles"
658 depends on SOC_IMX51 || COMPILE_TEST
661 This driver support TS-4800 FPGA GPIO controllers.
664 tristate "Cavium ThunderX/OCTEON-TX GPIO"
665 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
667 select GPIOLIB_IRQCHIP
668 select IRQ_DOMAIN_HIERARCHY
669 select IRQ_FASTEOI_HIERARCHY_HANDLERS
671 Say yes here to support the on-chip GPIO lines on the ThunderX
672 and OCTEON-TX families of SoCs.
675 tristate "UniPhier GPIO support"
676 depends on ARCH_UNIPHIER || COMPILE_TEST
678 select IRQ_DOMAIN_HIERARCHY
680 Say yes here to support UniPhier GPIOs.
685 select GPIOLIB_IRQCHIP
687 Say yes here to support i.MX or Vybrid vf610 GPIOs.
690 tristate "Toshiba Visconti GPIO support"
691 depends on ARCH_VISCONTI || COMPILE_TEST
693 select GPIOLIB_IRQCHIP
695 select IRQ_DOMAIN_HIERARCHY
697 Say yes here to support GPIO on Tohisba Visconti.
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
835 Enables support for the i8255 interface library functions. The i8255
836 interface library provides functions to facilitate communication with
837 interfaces compatible with the venerable Intel 8255 Programmable
838 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
839 in the early 1970s but compatible interfaces are nowadays typically
840 found embedded in larger VLSI processing chips and FPGA components.
842 If built as a module its name will be gpio-i8255.
844 config GPIO_104_DIO_48E
845 tristate "ACCES 104-DIO-48E GPIO support"
848 select GPIOLIB_IRQCHIP
851 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
852 104-DIO-24E). The base port addresses for the devices may be
853 configured via the base module parameter. The interrupt line numbers
854 for the devices may be configured via the irq module parameter.
856 config GPIO_104_IDIO_16
857 tristate "ACCES 104-IDIO-16 GPIO support"
860 select GPIOLIB_IRQCHIP
863 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
864 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
865 base port addresses for the devices may be configured via the base
866 module parameter. The interrupt line numbers for the devices may be
867 configured via the irq module parameter.
869 config GPIO_104_IDI_48
870 tristate "ACCES 104-IDI-48 GPIO support"
873 select GPIOLIB_IRQCHIP
876 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
877 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
878 the devices may be configured via the base module parameter. The
879 interrupt line numbers for the devices may be configured via the irq
883 tristate "Fintek and Nuvoton Super-I/O GPIO support"
885 This option enables support for GPIOs found on Fintek Super-I/O
886 chips F71869, F71869A, F71882FG, F71889F and F81866.
887 As well as Nuvoton Super-I/O chip NCT6116D.
889 To compile this driver as a module, choose M here: the module will
890 be called f7188x-gpio.
893 tristate "Diamond Systems GPIO-MM GPIO support"
898 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
900 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
901 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
902 support for these 48 channels of digital I/O.
904 The base port addresses for the devices may be configured via the base
905 array module parameter.
908 tristate "IT87xx GPIO support"
910 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
912 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
913 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
916 To compile this driver as a module, choose M here: the module will
920 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
921 depends on (X86 || COMPILE_TEST) && ACPI
923 select GPIOLIB_IRQCHIP
925 Say yes here to support GPIO interface on Intel Poulsbo SCH,
926 Intel Tunnel Creek processor, Intel Centerton processor or
927 Intel Quark X1000 SoC.
929 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
930 powered by the core power rail and are turned off during sleep
931 modes (S3 and higher). The remaining four GPIOs are powered by
932 the Intel SCH suspend power supply. These GPIOs remain
933 active during S3. The suspend-powered GPIOs can be used to wake the
934 system from the Suspend-to-RAM state.
936 The Intel Tunnel Creek processor has 5 GPIOs powered by the
937 core power rail and 9 from suspend power supply.
939 The Intel Centerton processor has a total of 30 GPIO pins.
940 Twenty-one are powered by the core power rail and 9 from the
941 suspend power supply.
943 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
944 power well and 6 from the suspend power well.
947 tristate "SMSC SCH311x SuperI/O GPIO"
949 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
950 SCH3116 "Super I/O" chipsets.
952 To compile this driver as a module, choose M here: the module will
953 be called gpio-sch311x.
956 tristate "TS-5500 DIO blocks and compatibles"
957 depends on TS5500 || COMPILE_TEST
959 This driver supports Digital I/O exposed by pin blocks found on some
960 Technologic Systems platforms. It includes, but is not limited to, 3
961 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
965 tristate "Winbond Super I/O GPIO support"
968 This option enables support for GPIOs found on Winbond Super I/O
970 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
973 You will need to provide a module parameter "gpios", or a
974 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
975 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
977 To compile this driver as a module, choose M here: the module will
978 be called gpio-winbond.
981 tristate "WinSystems WS16C48 GPIO support"
983 select GPIOLIB_IRQCHIP
985 Enables GPIO support for the WinSystems WS16C48. The base port
986 addresses for the devices may be configured via the base module
987 parameter. The interrupt line numbers for the devices may be
988 configured via the irq module parameter.
992 menu "I2C GPIO expanders"
996 tristate "Avionic Design N-bit GPIO expander"
998 select GPIOLIB_IRQCHIP
1000 This option enables support for N GPIOs found on Avionic Design
1001 I2C GPIO expanders. The register space will be extended by powers
1002 of two, so the controller will need to accommodate for that. For
1003 example: if a controller provides 48 pins, 6 registers will be
1004 enough to represent all pins, but the driver will assume a
1005 register layout for 64 pins (8 registers).
1008 tristate "Gateworks PLD GPIO Expander"
1011 Say yes here to provide access to the Gateworks I2C PLD GPIO
1012 Expander. This is used at least on the Cambria GW2358-4.
1015 tristate "Maxim MAX7300 GPIO expander"
1018 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1021 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1023 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1024 Port Expanders. Each IO port on these chips has a fixed role of
1025 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1026 Input and Output (designed by 'P'). The combinations are listed
1029 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1030 max7322 (4I4O), max7323 (4P4O)
1032 16 bits: max7324 (8I8O), max7325 (8P8O),
1033 max7326 (4I12O), max7327 (4P12O)
1035 Board setup code must specify the model to use, and the start
1036 number for these GPIOs.
1038 config GPIO_MAX732X_IRQ
1039 bool "Interrupt controller support for MAX732x"
1040 depends on GPIO_MAX732X=y
1041 select GPIOLIB_IRQCHIP
1043 Say yes here to enable the max732x to be used as an interrupt
1044 controller. It requires the driver to be built in the kernel.
1047 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1050 Say yes here to provide access to several register-oriented
1051 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1054 4 bits: pca9536, pca9537
1056 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1057 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1059 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1064 40 bits: pca9505, pca9698
1066 config GPIO_PCA953X_IRQ
1067 bool "Interrupt controller support for PCA953x"
1068 depends on GPIO_PCA953X
1069 select GPIOLIB_IRQCHIP
1071 Say yes here to enable the pca953x to be used as an interrupt
1075 tristate "PCA9570 4-Bit I2C GPO expander"
1077 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1079 To compile this driver as a module, choose M here: the module will
1080 be called gpio-pca9570.
1083 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1084 select GPIOLIB_IRQCHIP
1087 Say yes here to provide access to most "quasi-bidirectional" I2C
1088 GPIO expanders used for additional digital outputs or inputs.
1089 Most of these parts are from NXP, though TI is a second source for
1090 some of them. Compatible models include:
1092 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1093 pca9670, pca9672, pca9674, pca9674a,
1096 16 bits: pcf8575, pcf8575c, pca8575,
1097 pca9671, pca9673, pca9675
1099 Your board setup code will need to declare the expanders in
1100 use, and assign numbers to the GPIOs they expose. Those GPIOs
1101 can then be used from drivers and other kernel code, just like
1102 other GPIOs, but only accessible from task contexts.
1104 This driver provides an in-kernel interface to those GPIOs using
1105 platform-neutral GPIO calls.
1107 config GPIO_TPIC2810
1108 tristate "TPIC2810 8-Bit I2C GPO expander"
1110 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1112 To compile this driver as a module, choose M here: the module will
1113 be called gpio-tpic2810.
1116 tristate "Technologic Systems FPGA I2C GPIO"
1117 depends on SOC_IMX6 || COMPILE_TEST
1120 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1121 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1125 menu "MFD GPIO expanders"
1128 tristate "GPIO Support for ADP5520 PMIC"
1129 depends on PMIC_ADP5520
1131 This option enables support for on-chip GPIO found
1132 on Analog Devices ADP5520 PMICs.
1134 config GPIO_ALTERA_A10SR
1135 tristate "Altera Arria10 System Resource GPIO"
1136 depends on MFD_ALTERA_A10SR
1138 Driver for Arria10 Development Kit GPIO expansion which
1139 includes reads of pushbuttons and DIP switches as well
1143 tristate "Wolfson Microelectronics Arizona class devices"
1144 depends on MFD_ARIZONA
1146 Support for GPIOs on Wolfson Arizona class devices.
1149 tristate "ROHM BD71815 PMIC GPIO support"
1150 depends on MFD_ROHM_BD71828
1152 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1153 available on the ROHM PMIC.
1155 This driver can also be built as a module. If so, the module
1156 will be called gpio-bd71815.
1159 tristate "ROHM BD71828 GPIO support"
1160 depends on MFD_ROHM_BD71828
1162 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1163 available on the ROHM PMIC in total. The GPIOs are limited to
1164 outputs only and pins must be configured to GPIO outputs by
1165 OTP. Enable this only if you want to use these pins as outputs.
1167 This driver can also be built as a module. If so, the module
1168 will be called gpio-bd71828.
1170 config GPIO_BD9571MWV
1171 tristate "ROHM BD9571 GPIO support"
1172 depends on MFD_BD9571MWV
1174 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1175 available on the ROHM PMIC in total, both of which can also
1176 generate interrupts.
1178 This driver can also be built as a module. If so, the module
1179 will be called gpio-bd9571mwv.
1181 config GPIO_CRYSTAL_COVE
1182 tristate "GPIO support for Crystal Cove PMIC"
1183 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1184 select GPIOLIB_IRQCHIP
1186 Support for GPIO pins on Crystal Cove PMIC.
1188 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1191 This driver can also be built as a module. If so, the module will be
1192 called gpio-crystalcove.
1195 tristate "AMD CS5535/CS5536 GPIO support"
1196 depends on X86 || MIPS || COMPILE_TEST
1197 depends on MFD_CS5535
1199 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1200 can be used for quite a number of things. The CS5535/6 is found on
1201 AMD Geode and Lemote Yeeloong devices.
1206 tristate "Dialog DA9052 GPIO"
1207 depends on PMIC_DA9052
1209 Say yes here to enable the GPIO driver for the DA9052 chip.
1212 tristate "Dialog Semiconductor DA9055 GPIO"
1213 depends on MFD_DA9055
1215 Say yes here to enable the GPIO driver for the DA9055 chip.
1217 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1218 be controlled by this driver.
1220 If driver is built as a module it will be called gpio-da9055.
1223 tristate "Diolan DLN2 GPIO support"
1225 select GPIOLIB_IRQCHIP
1228 Select this option to enable GPIO driver for the Diolan DLN2
1231 This driver can also be built as a module. If so, the module
1232 will be called gpio-dln2.
1235 bool "HTC EGPIO support"
1238 This driver supports the CPLD egpio chip present on
1239 several HTC phones. It provides basic support for input
1240 pins, output pins, and IRQs.
1242 config GPIO_JANZ_TTL
1243 tristate "Janz VMOD-TTL Digital IO Module"
1244 depends on MFD_JANZ_CMODIO
1246 This enables support for the Janz VMOD-TTL Digital IO module.
1247 This driver provides support for driving the pins in output
1248 mode only. Input mode is not supported.
1251 tristate "Kontron ETX / COMexpress GPIO"
1252 depends on MFD_KEMPLD
1254 This enables support for the PLD GPIO interface on some Kontron ETX
1255 and COMexpress (ETXexpress) modules.
1257 This driver can also be built as a module. If so, the module will be
1261 tristate "TI/National Semiconductor LP3943 GPIO expander"
1262 depends on MFD_LP3943
1264 GPIO driver for LP3943 MFD.
1265 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1266 Open drain outputs are required for this usage.
1269 tristate "TI LP873X GPO"
1270 depends on MFD_TI_LP873X
1272 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1275 This driver can also be built as a module. If so, the module will be
1279 tristate "TI LP87565 GPIO"
1280 depends on MFD_TI_LP87565
1282 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1285 This driver can also be built as a module. If so, the module will be
1286 called gpio-lp87565.
1289 tristate "Cirrus Logic Madera class codecs"
1290 depends on PINCTRL_MADERA
1292 Support for GPIOs on Cirrus Logic Madera class codecs.
1294 config GPIO_MAX77620
1295 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1296 depends on MFD_MAX77620
1297 select GPIOLIB_IRQCHIP
1299 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1300 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1301 driver also provides interrupt support for each of the GPIOs.
1302 Say yes here to enable the max77620 to be used as GPIO controller.
1304 config GPIO_MAX77650
1305 tristate "Maxim MAX77650/77651 GPIO support"
1306 depends on MFD_MAX77650
1308 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1309 These chips have a single pin that can be configured as GPIO.
1312 bool "TI PALMAS series PMICs GPIO"
1313 depends on MFD_PALMAS
1315 Select this option to enable GPIO driver for the TI PALMAS
1319 bool "RICOH RC5T583 GPIO"
1320 depends on MFD_RC5T583
1322 Select this option to enable GPIO driver for the Ricoh RC5T583
1324 This driver provides the support for driving/reading the GPIO pins
1325 of RC5T583 device through standard GPIO library.
1327 config GPIO_SL28CPLD
1328 tristate "Kontron sl28cpld GPIO support"
1329 depends on MFD_SL28CPLD || COMPILE_TEST
1331 select GPIOLIB_IRQCHIP
1334 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1336 This driver can also be built as a module. If so, the module will be
1337 called gpio-sl28cpld.
1341 depends on MFD_STMPE
1343 select GPIOLIB_IRQCHIP
1345 This enables support for the GPIOs found on the STMPE I/O
1349 bool "TC3589X GPIOs"
1350 depends on MFD_TC3589X
1352 select GPIOLIB_IRQCHIP
1354 This enables support for the GPIOs found on the TC3589X
1357 config GPIO_TIMBERDALE
1358 bool "Support for timberdale GPIO IP"
1359 depends on MFD_TIMBERDALE
1361 Add support for the GPIO IP in the timberdale FPGA.
1363 config GPIO_TN48M_CPLD
1364 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1365 depends on MFD_TN48M_CPLD
1368 This enables support for the GPIOs found on the Delta
1369 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1370 they are input-only or output-only type.
1372 This driver can also be built as a module. If so, the
1373 module will be called gpio-tn48m.
1375 config GPIO_TPS65086
1376 tristate "TI TPS65086 GPO"
1377 depends on MFD_TPS65086
1379 This driver supports the GPO on TI TPS65086x PMICs.
1381 config GPIO_TPS65218
1382 tristate "TPS65218 GPIO"
1383 depends on MFD_TPS65218
1385 Select this option to enable GPIO driver for the TPS65218
1388 config GPIO_TPS6586X
1389 bool "TPS6586X GPIO"
1390 depends on MFD_TPS6586X
1392 Select this option to enable GPIO driver for the TPS6586X
1395 config GPIO_TPS65910
1396 bool "TPS65910 GPIO"
1397 depends on MFD_TPS65910
1399 Select this option to enable GPIO driver for the TPS65910
1402 config GPIO_TPS65912
1403 tristate "TI TPS65912 GPIO"
1404 depends on MFD_TPS65912
1406 This driver supports TPS65912 GPIO chip.
1408 config GPIO_TPS68470
1409 tristate "TPS68470 GPIO"
1410 depends on INTEL_SKL_INT3472
1412 Select this option to enable GPIO driver for the TPS68470
1414 There are 7 GPIOs and few sensor-related GPIOs supported
1415 by the TPS68470. While the 7 GPIOs can be configured as
1416 input or output as appropriate, the sensor related GPIOs
1417 are "output only" GPIOs.
1420 tristate "TQ-Systems QTMX86 GPIO"
1421 depends on MFD_TQMX86 || COMPILE_TEST
1422 depends on HAS_IOPORT_MAP
1423 select GPIOLIB_IRQCHIP
1425 This driver supports GPIO on the TQMX86 IO controller.
1428 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1429 depends on TWL4030_CORE
1431 Say yes here to access the GPIO signals of various multi-function
1432 power management chips from Texas Instruments.
1435 tristate "TWL6040 GPO"
1436 depends on TWL6040_CORE
1438 Say yes here to access the GPO signals of twl6040
1439 audio chip from Texas Instruments.
1442 tristate "Philips UCB1400 GPIO"
1443 depends on UCB1400_CORE
1445 This enables support for the Philips UCB1400 GPIO pins.
1446 The UCB1400 is an AC97 audio codec.
1448 config GPIO_WHISKEY_COVE
1449 tristate "GPIO support for Whiskey Cove PMIC"
1450 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1451 select GPIOLIB_IRQCHIP
1453 Support for GPIO pins on Whiskey Cove PMIC.
1455 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1458 This driver can also be built as a module. If so, the module will be
1462 tristate "WM831x GPIOs"
1463 depends on MFD_WM831X
1465 Say yes here to access the GPIO signals of WM831x power management
1466 chips from Wolfson Microelectronics.
1469 tristate "WM8350 GPIOs"
1470 depends on MFD_WM8350
1472 Say yes here to access the GPIO signals of WM8350 power management
1473 chips from Wolfson Microelectronics.
1476 tristate "WM8994 GPIOs"
1477 depends on MFD_WM8994
1479 Say yes here to access the GPIO signals of WM8994 audio hub
1480 CODECs from Wolfson Microelectronics.
1484 menu "PCI GPIO expanders"
1488 tristate "AMD 8111 GPIO driver"
1489 depends on X86 || COMPILE_TEST
1490 depends on HAS_IOPORT_MAP
1492 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1494 Note that usually system firmware/ACPI handles GPIO pins on their
1495 own and users might easily break their systems with uncareful usage
1501 tristate "BT8XX GPIO abuser"
1502 depends on VIDEO_BT848=n
1504 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1505 as a cheap PCI GPIO card.
1507 This chip can be found on Miro, Hauppauge and STB TV-cards.
1509 The card needs to be physically altered for using it as a
1510 GPIO card. For more information on how to build a GPIO card
1511 from a BT8xx TV card, see the documentation file at
1512 Documentation/driver-api/gpio/bt8xxgpio.rst
1516 config GPIO_MERRIFIELD
1517 tristate "Intel Merrifield GPIO support"
1518 depends on X86_INTEL_MID
1519 select GPIOLIB_IRQCHIP
1521 Say Y here to support Intel Merrifield GPIO.
1524 tristate "Mellanox BlueField SoC GPIO"
1525 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1528 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1531 tristate "Mellanox BlueField 2 SoC GPIO"
1532 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1535 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1538 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1539 depends on X86 || COMPILE_TEST
1540 select GENERIC_IRQ_CHIP
1542 ML7213 is companion chip for Intel Atom E6xx series.
1543 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1544 Hub) which is for IVI (In-Vehicle Infotainment) use.
1545 This driver can access the IOH's GPIO device.
1548 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1549 depends on X86_32 || MIPS || COMPILE_TEST
1550 select GENERIC_IRQ_CHIP
1552 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1553 which is an IOH (Input/Output Hub) for x86 embedded processor.
1554 This driver can access PCH GPIO device.
1556 This driver also can be used for LAPIS Semiconductor IOH (Input/
1557 Output Hub), ML7223 and ML7831.
1558 ML7223 IOH is for MP (Media Phone) use.
1559 ML7831 IOH is for general purpose use.
1560 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1561 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1563 config GPIO_PCI_IDIO_16
1564 tristate "ACCES PCI-IDIO-16 GPIO support"
1565 select GPIOLIB_IRQCHIP
1568 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1569 generated when any of the inputs change state (low to high or high to
1570 low). Input filter control is not supported by this driver, and the
1571 input filters are deactivated by this driver.
1573 config GPIO_PCIE_IDIO_24
1574 tristate "ACCES PCIe-IDIO-24 GPIO support"
1575 select GPIOLIB_IRQCHIP
1577 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1578 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1579 when any of the inputs change state (low to high or high to low).
1580 Input filter control is not supported by this driver, and the input
1581 filters are deactivated by this driver.
1584 tristate "RDC R-321x GPIO support"
1588 Support for the RDC R321x SoC GPIOs over southbridge
1589 PCI configuration space.
1591 config GPIO_SODAVILLE
1592 bool "Intel Sodaville GPIO support"
1593 depends on X86 && OF
1595 select GENERIC_IRQ_CHIP
1597 Say Y here to support Intel Sodaville GPIO.
1601 menu "SPI GPIO expanders"
1602 depends on SPI_MASTER
1605 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1608 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1609 shift registers. This driver can be used to provide access
1610 to more GPIO outputs.
1612 config GPIO_MAX3191X
1613 tristate "Maxim MAX3191x industrial serializer"
1616 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1617 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1618 chip to make 8 digital 24V inputs available via SPI. Supports
1619 CRC checksums to guard against electromagnetic interference,
1620 as well as undervoltage and overtemperature detection.
1623 tristate "Maxim MAX7301 GPIO expander"
1626 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1629 tristate "Freescale MC33880 high-side/low-side switch"
1631 SPI driver for Freescale MC33880 high-side/low-side switch.
1632 This provides GPIO interface supporting inputs and outputs.
1635 tristate "Generic parallel-in/serial-out shift register"
1637 GPIO driver for SPI compatible parallel-in/serial-out shift
1638 registers. These are input only devices.
1641 tristate "EXAR XRA1403 16-bit GPIO expander"
1644 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1647 tristate "Turris Mox Moxtet bus GPIO expander"
1650 Say yes here if you are building for the Turris Mox router.
1651 This is the driver needed for configuring the GPIOs via the Moxtet
1652 bus. For example the Mox module with SFP cage needs this driver
1653 so that phylink can use corresponding GPIOs.
1657 menu "USB GPIO expanders"
1660 config GPIO_VIPERBOARD
1661 tristate "Viperboard GPIO a & b support"
1662 depends on MFD_VIPERBOARD
1664 Say yes here to access the GPIO signals of Nano River
1665 Technologies Viperboard. There are two GPIO chips on the
1666 board: gpioa and gpiob.
1667 See viperboard API specification and Nano
1668 River Tech's viperboard.h for detailed meaning
1669 of the module parameters.
1673 menu "Virtual GPIO drivers"
1675 config GPIO_AGGREGATOR
1676 tristate "GPIO Aggregator"
1678 Say yes here to enable the GPIO Aggregator, which provides a way to
1679 aggregate existing GPIO lines into a new virtual GPIO chip.
1680 This can serve the following purposes:
1681 - Assign permissions for a collection of GPIO lines to a user,
1682 - Export a collection of GPIO lines to a virtual machine,
1683 - Provide a generic driver for a GPIO-operated device in an
1684 industrial control context, to be operated from userspace using
1685 the GPIO chardev interface.
1688 tristate "GPIO latch driver"
1690 Say yes here to enable a driver for GPIO multiplexers based on latches
1691 connected to other GPIOs.
1694 tristate "GPIO Testing Driver"
1697 This enables GPIO Testing driver, which provides a way to test GPIO
1698 subsystem through sysfs (or char device) and debugfs.
1699 User could use it through the script in
1700 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1704 tristate "VirtIO GPIO support"
1706 select GPIOLIB_IRQCHIP
1708 Say Y here to enable guest support for virtio-based GPIO controllers.
1710 These virtual GPIOs can be routed to real GPIOs or attached to
1711 simulators on the host (like QEMU).
1714 tristate "GPIO Simulator Module"
1718 This enables the GPIO simulator - a configfs-based GPIO testing