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"
850 select GPIOLIB_IRQCHIP
853 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
854 104-DIO-24E). The base port addresses for the devices may be
855 configured via the base module parameter. The interrupt line numbers
856 for the devices may be configured via the irq module parameter.
858 config GPIO_104_IDIO_16
859 tristate "ACCES 104-IDIO-16 GPIO support"
862 select GPIOLIB_IRQCHIP
865 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
866 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
867 base port addresses for the devices may be configured via the base
868 module parameter. The interrupt line numbers for the devices may be
869 configured via the irq module parameter.
871 config GPIO_104_IDI_48
872 tristate "ACCES 104-IDI-48 GPIO support"
877 select GPIOLIB_IRQCHIP
880 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
881 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
882 the devices may be configured via the base module parameter. The
883 interrupt line numbers for the devices may be configured via the irq
887 tristate "Fintek and Nuvoton Super-I/O GPIO support"
889 This option enables support for GPIOs found on Fintek Super-I/O
890 chips F71869, F71869A, F71882FG, F71889F and F81866.
891 As well as Nuvoton Super-I/O chip NCT6116D.
893 To compile this driver as a module, choose M here: the module will
894 be called f7188x-gpio.
897 tristate "Diamond Systems GPIO-MM GPIO support"
902 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
904 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
905 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
906 support for these 48 channels of digital I/O.
908 The base port addresses for the devices may be configured via the base
909 array module parameter.
912 tristate "IT87xx GPIO support"
914 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
916 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
917 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
920 To compile this driver as a module, choose M here: the module will
924 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
925 depends on (X86 || COMPILE_TEST) && ACPI
927 select GPIOLIB_IRQCHIP
929 Say yes here to support GPIO interface on Intel Poulsbo SCH,
930 Intel Tunnel Creek processor, Intel Centerton processor or
931 Intel Quark X1000 SoC.
933 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
934 powered by the core power rail and are turned off during sleep
935 modes (S3 and higher). The remaining four GPIOs are powered by
936 the Intel SCH suspend power supply. These GPIOs remain
937 active during S3. The suspend-powered GPIOs can be used to wake the
938 system from the Suspend-to-RAM state.
940 The Intel Tunnel Creek processor has 5 GPIOs powered by the
941 core power rail and 9 from suspend power supply.
943 The Intel Centerton processor has a total of 30 GPIO pins.
944 Twenty-one are powered by the core power rail and 9 from the
945 suspend power supply.
947 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
948 power well and 6 from the suspend power well.
951 tristate "SMSC SCH311x SuperI/O GPIO"
953 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
954 SCH3116 "Super I/O" chipsets.
956 To compile this driver as a module, choose M here: the module will
957 be called gpio-sch311x.
960 tristate "TS-5500 DIO blocks and compatibles"
961 depends on TS5500 || COMPILE_TEST
963 This driver supports Digital I/O exposed by pin blocks found on some
964 Technologic Systems platforms. It includes, but is not limited to, 3
965 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
969 tristate "Winbond Super I/O GPIO support"
972 This option enables support for GPIOs found on Winbond Super I/O
974 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
977 You will need to provide a module parameter "gpios", or a
978 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
979 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
981 To compile this driver as a module, choose M here: the module will
982 be called gpio-winbond.
985 tristate "WinSystems WS16C48 GPIO support"
987 select GPIOLIB_IRQCHIP
989 Enables GPIO support for the WinSystems WS16C48. The base port
990 addresses for the devices may be configured via the base module
991 parameter. The interrupt line numbers for the devices may be
992 configured via the irq module parameter.
996 menu "I2C GPIO expanders"
1000 tristate "Avionic Design N-bit GPIO expander"
1002 select GPIOLIB_IRQCHIP
1004 This option enables support for N GPIOs found on Avionic Design
1005 I2C GPIO expanders. The register space will be extended by powers
1006 of two, so the controller will need to accommodate for that. For
1007 example: if a controller provides 48 pins, 6 registers will be
1008 enough to represent all pins, but the driver will assume a
1009 register layout for 64 pins (8 registers).
1012 tristate "Gateworks PLD GPIO Expander"
1015 Say yes here to provide access to the Gateworks I2C PLD GPIO
1016 Expander. This is used at least on the Cambria GW2358-4.
1019 tristate "Maxim MAX7300 GPIO expander"
1022 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1025 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1027 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1028 Port Expanders. Each IO port on these chips has a fixed role of
1029 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1030 Input and Output (designed by 'P'). The combinations are listed
1033 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1034 max7322 (4I4O), max7323 (4P4O)
1036 16 bits: max7324 (8I8O), max7325 (8P8O),
1037 max7326 (4I12O), max7327 (4P12O)
1039 Board setup code must specify the model to use, and the start
1040 number for these GPIOs.
1042 config GPIO_MAX732X_IRQ
1043 bool "Interrupt controller support for MAX732x"
1044 depends on GPIO_MAX732X=y
1045 select GPIOLIB_IRQCHIP
1047 Say yes here to enable the max732x to be used as an interrupt
1048 controller. It requires the driver to be built in the kernel.
1051 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1054 Say yes here to provide access to several register-oriented
1055 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1058 4 bits: pca9536, pca9537
1060 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1061 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1063 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1068 40 bits: pca9505, pca9698
1070 config GPIO_PCA953X_IRQ
1071 bool "Interrupt controller support for PCA953x"
1072 depends on GPIO_PCA953X
1073 select GPIOLIB_IRQCHIP
1075 Say yes here to enable the pca953x to be used as an interrupt
1079 tristate "PCA9570 4-Bit I2C GPO expander"
1081 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1083 To compile this driver as a module, choose M here: the module will
1084 be called gpio-pca9570.
1087 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1088 select GPIOLIB_IRQCHIP
1091 Say yes here to provide access to most "quasi-bidirectional" I2C
1092 GPIO expanders used for additional digital outputs or inputs.
1093 Most of these parts are from NXP, though TI is a second source for
1094 some of them. Compatible models include:
1096 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1097 pca9670, pca9672, pca9674, pca9674a,
1100 16 bits: pcf8575, pcf8575c, pca8575,
1101 pca9671, pca9673, pca9675
1103 Your board setup code will need to declare the expanders in
1104 use, and assign numbers to the GPIOs they expose. Those GPIOs
1105 can then be used from drivers and other kernel code, just like
1106 other GPIOs, but only accessible from task contexts.
1108 This driver provides an in-kernel interface to those GPIOs using
1109 platform-neutral GPIO calls.
1111 config GPIO_TPIC2810
1112 tristate "TPIC2810 8-Bit I2C GPO expander"
1114 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1116 To compile this driver as a module, choose M here: the module will
1117 be called gpio-tpic2810.
1120 tristate "Technologic Systems FPGA I2C GPIO"
1121 depends on SOC_IMX6 || COMPILE_TEST
1124 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1125 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1129 menu "MFD GPIO expanders"
1132 tristate "GPIO Support for ADP5520 PMIC"
1133 depends on PMIC_ADP5520
1135 This option enables support for on-chip GPIO found
1136 on Analog Devices ADP5520 PMICs.
1138 config GPIO_ALTERA_A10SR
1139 tristate "Altera Arria10 System Resource GPIO"
1140 depends on MFD_ALTERA_A10SR
1142 Driver for Arria10 Development Kit GPIO expansion which
1143 includes reads of pushbuttons and DIP switches as well
1147 tristate "Wolfson Microelectronics Arizona class devices"
1148 depends on MFD_ARIZONA
1150 Support for GPIOs on Wolfson Arizona class devices.
1153 tristate "ROHM BD71815 PMIC GPIO support"
1154 depends on MFD_ROHM_BD71828
1156 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1157 available on the ROHM PMIC.
1159 This driver can also be built as a module. If so, the module
1160 will be called gpio-bd71815.
1163 tristate "ROHM BD71828 GPIO support"
1164 depends on MFD_ROHM_BD71828
1166 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1167 available on the ROHM PMIC in total. The GPIOs are limited to
1168 outputs only and pins must be configured to GPIO outputs by
1169 OTP. Enable this only if you want to use these pins as outputs.
1171 This driver can also be built as a module. If so, the module
1172 will be called gpio-bd71828.
1174 config GPIO_BD9571MWV
1175 tristate "ROHM BD9571 GPIO support"
1176 depends on MFD_BD9571MWV
1178 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1179 available on the ROHM PMIC in total, both of which can also
1180 generate interrupts.
1182 This driver can also be built as a module. If so, the module
1183 will be called gpio-bd9571mwv.
1185 config GPIO_CRYSTAL_COVE
1186 tristate "GPIO support for Crystal Cove PMIC"
1187 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1188 select GPIOLIB_IRQCHIP
1190 Support for GPIO pins on Crystal Cove PMIC.
1192 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1195 This driver can also be built as a module. If so, the module will be
1196 called gpio-crystalcove.
1199 tristate "AMD CS5535/CS5536 GPIO support"
1200 depends on X86 || MIPS || COMPILE_TEST
1201 depends on MFD_CS5535
1203 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1204 can be used for quite a number of things. The CS5535/6 is found on
1205 AMD Geode and Lemote Yeeloong devices.
1210 tristate "Dialog DA9052 GPIO"
1211 depends on PMIC_DA9052
1213 Say yes here to enable the GPIO driver for the DA9052 chip.
1216 tristate "Dialog Semiconductor DA9055 GPIO"
1217 depends on MFD_DA9055
1219 Say yes here to enable the GPIO driver for the DA9055 chip.
1221 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1222 be controlled by this driver.
1224 If driver is built as a module it will be called gpio-da9055.
1227 tristate "Diolan DLN2 GPIO support"
1229 select GPIOLIB_IRQCHIP
1232 Select this option to enable GPIO driver for the Diolan DLN2
1235 This driver can also be built as a module. If so, the module
1236 will be called gpio-dln2.
1239 bool "HTC EGPIO support"
1242 This driver supports the CPLD egpio chip present on
1243 several HTC phones. It provides basic support for input
1244 pins, output pins, and IRQs.
1246 config GPIO_JANZ_TTL
1247 tristate "Janz VMOD-TTL Digital IO Module"
1248 depends on MFD_JANZ_CMODIO
1250 This enables support for the Janz VMOD-TTL Digital IO module.
1251 This driver provides support for driving the pins in output
1252 mode only. Input mode is not supported.
1255 tristate "Kontron ETX / COMexpress GPIO"
1256 depends on MFD_KEMPLD
1258 This enables support for the PLD GPIO interface on some Kontron ETX
1259 and COMexpress (ETXexpress) modules.
1261 This driver can also be built as a module. If so, the module will be
1265 tristate "TI/National Semiconductor LP3943 GPIO expander"
1266 depends on MFD_LP3943
1268 GPIO driver for LP3943 MFD.
1269 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1270 Open drain outputs are required for this usage.
1273 tristate "TI LP873X GPO"
1274 depends on MFD_TI_LP873X
1276 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1279 This driver can also be built as a module. If so, the module will be
1283 tristate "TI LP87565 GPIO"
1284 depends on MFD_TI_LP87565
1286 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1289 This driver can also be built as a module. If so, the module will be
1290 called gpio-lp87565.
1293 tristate "Cirrus Logic Madera class codecs"
1294 depends on PINCTRL_MADERA
1296 Support for GPIOs on Cirrus Logic Madera class codecs.
1298 config GPIO_MAX77620
1299 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1300 depends on MFD_MAX77620
1301 select GPIOLIB_IRQCHIP
1303 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1304 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1305 driver also provides interrupt support for each of the GPIOs.
1306 Say yes here to enable the max77620 to be used as GPIO controller.
1308 config GPIO_MAX77650
1309 tristate "Maxim MAX77650/77651 GPIO support"
1310 depends on MFD_MAX77650
1312 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1313 These chips have a single pin that can be configured as GPIO.
1316 bool "TI PALMAS series PMICs GPIO"
1317 depends on MFD_PALMAS
1319 Select this option to enable GPIO driver for the TI PALMAS
1323 bool "RICOH RC5T583 GPIO"
1324 depends on MFD_RC5T583
1326 Select this option to enable GPIO driver for the Ricoh RC5T583
1328 This driver provides the support for driving/reading the GPIO pins
1329 of RC5T583 device through standard GPIO library.
1331 config GPIO_SL28CPLD
1332 tristate "Kontron sl28cpld GPIO support"
1333 depends on MFD_SL28CPLD || COMPILE_TEST
1335 select GPIOLIB_IRQCHIP
1338 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1340 This driver can also be built as a module. If so, the module will be
1341 called gpio-sl28cpld.
1345 depends on MFD_STMPE
1347 select GPIOLIB_IRQCHIP
1349 This enables support for the GPIOs found on the STMPE I/O
1353 bool "TC3589X GPIOs"
1354 depends on MFD_TC3589X
1356 select GPIOLIB_IRQCHIP
1358 This enables support for the GPIOs found on the TC3589X
1361 config GPIO_TIMBERDALE
1362 bool "Support for timberdale GPIO IP"
1363 depends on MFD_TIMBERDALE
1365 Add support for the GPIO IP in the timberdale FPGA.
1367 config GPIO_TN48M_CPLD
1368 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1369 depends on MFD_TN48M_CPLD
1372 This enables support for the GPIOs found on the Delta
1373 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1374 they are input-only or output-only type.
1376 This driver can also be built as a module. If so, the
1377 module will be called gpio-tn48m.
1379 config GPIO_TPS65086
1380 tristate "TI TPS65086 GPO"
1381 depends on MFD_TPS65086
1383 This driver supports the GPO on TI TPS65086x PMICs.
1385 config GPIO_TPS65218
1386 tristate "TPS65218 GPIO"
1387 depends on MFD_TPS65218
1389 Select this option to enable GPIO driver for the TPS65218
1392 config GPIO_TPS6586X
1393 bool "TPS6586X GPIO"
1394 depends on MFD_TPS6586X
1396 Select this option to enable GPIO driver for the TPS6586X
1399 config GPIO_TPS65910
1400 bool "TPS65910 GPIO"
1401 depends on MFD_TPS65910
1403 Select this option to enable GPIO driver for the TPS65910
1406 config GPIO_TPS65912
1407 tristate "TI TPS65912 GPIO"
1408 depends on MFD_TPS65912
1410 This driver supports TPS65912 GPIO chip.
1412 config GPIO_TPS68470
1413 tristate "TPS68470 GPIO"
1414 depends on INTEL_SKL_INT3472
1416 Select this option to enable GPIO driver for the TPS68470
1418 There are 7 GPIOs and few sensor-related GPIOs supported
1419 by the TPS68470. While the 7 GPIOs can be configured as
1420 input or output as appropriate, the sensor related GPIOs
1421 are "output only" GPIOs.
1424 tristate "TQ-Systems QTMX86 GPIO"
1425 depends on MFD_TQMX86 || COMPILE_TEST
1426 depends on HAS_IOPORT_MAP
1427 select GPIOLIB_IRQCHIP
1429 This driver supports GPIO on the TQMX86 IO controller.
1432 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1433 depends on TWL4030_CORE
1435 Say yes here to access the GPIO signals of various multi-function
1436 power management chips from Texas Instruments.
1439 tristate "TWL6040 GPO"
1440 depends on TWL6040_CORE
1442 Say yes here to access the GPO signals of twl6040
1443 audio chip from Texas Instruments.
1446 tristate "Philips UCB1400 GPIO"
1447 depends on UCB1400_CORE
1449 This enables support for the Philips UCB1400 GPIO pins.
1450 The UCB1400 is an AC97 audio codec.
1452 config GPIO_WHISKEY_COVE
1453 tristate "GPIO support for Whiskey Cove PMIC"
1454 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1455 select GPIOLIB_IRQCHIP
1457 Support for GPIO pins on Whiskey Cove PMIC.
1459 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1462 This driver can also be built as a module. If so, the module will be
1466 tristate "WM831x GPIOs"
1467 depends on MFD_WM831X
1469 Say yes here to access the GPIO signals of WM831x power management
1470 chips from Wolfson Microelectronics.
1473 tristate "WM8350 GPIOs"
1474 depends on MFD_WM8350
1476 Say yes here to access the GPIO signals of WM8350 power management
1477 chips from Wolfson Microelectronics.
1480 tristate "WM8994 GPIOs"
1481 depends on MFD_WM8994
1483 Say yes here to access the GPIO signals of WM8994 audio hub
1484 CODECs from Wolfson Microelectronics.
1488 menu "PCI GPIO expanders"
1492 tristate "AMD 8111 GPIO driver"
1493 depends on X86 || COMPILE_TEST
1494 depends on HAS_IOPORT_MAP
1496 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1498 Note that usually system firmware/ACPI handles GPIO pins on their
1499 own and users might easily break their systems with uncareful usage
1505 tristate "BT8XX GPIO abuser"
1506 depends on VIDEO_BT848=n
1508 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1509 as a cheap PCI GPIO card.
1511 This chip can be found on Miro, Hauppauge and STB TV-cards.
1513 The card needs to be physically altered for using it as a
1514 GPIO card. For more information on how to build a GPIO card
1515 from a BT8xx TV card, see the documentation file at
1516 Documentation/driver-api/gpio/bt8xxgpio.rst
1520 config GPIO_MERRIFIELD
1521 tristate "Intel Merrifield GPIO support"
1522 depends on X86_INTEL_MID
1523 select GPIOLIB_IRQCHIP
1525 Say Y here to support Intel Merrifield GPIO.
1528 tristate "Mellanox BlueField SoC GPIO"
1529 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1532 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1535 tristate "Mellanox BlueField 2 SoC GPIO"
1536 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1539 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1542 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1543 depends on X86 || COMPILE_TEST
1544 select GENERIC_IRQ_CHIP
1546 ML7213 is companion chip for Intel Atom E6xx series.
1547 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1548 Hub) which is for IVI (In-Vehicle Infotainment) use.
1549 This driver can access the IOH's GPIO device.
1552 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1553 depends on X86_32 || MIPS || COMPILE_TEST
1554 select GENERIC_IRQ_CHIP
1556 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1557 which is an IOH (Input/Output Hub) for x86 embedded processor.
1558 This driver can access PCH GPIO device.
1560 This driver also can be used for LAPIS Semiconductor IOH (Input/
1561 Output Hub), ML7223 and ML7831.
1562 ML7223 IOH is for MP (Media Phone) use.
1563 ML7831 IOH is for general purpose use.
1564 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1565 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1567 config GPIO_PCI_IDIO_16
1568 tristate "ACCES PCI-IDIO-16 GPIO support"
1569 select GPIOLIB_IRQCHIP
1572 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1573 generated when any of the inputs change state (low to high or high to
1574 low). Input filter control is not supported by this driver, and the
1575 input filters are deactivated by this driver.
1577 config GPIO_PCIE_IDIO_24
1578 tristate "ACCES PCIe-IDIO-24 GPIO support"
1579 select GPIOLIB_IRQCHIP
1581 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1582 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1583 when any of the inputs change state (low to high or high to low).
1584 Input filter control is not supported by this driver, and the input
1585 filters are deactivated by this driver.
1588 tristate "RDC R-321x GPIO support"
1592 Support for the RDC R321x SoC GPIOs over southbridge
1593 PCI configuration space.
1595 config GPIO_SODAVILLE
1596 bool "Intel Sodaville GPIO support"
1597 depends on X86 && OF
1599 select GENERIC_IRQ_CHIP
1601 Say Y here to support Intel Sodaville GPIO.
1605 menu "SPI GPIO expanders"
1606 depends on SPI_MASTER
1609 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1612 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1613 shift registers. This driver can be used to provide access
1614 to more GPIO outputs.
1616 config GPIO_MAX3191X
1617 tristate "Maxim MAX3191x industrial serializer"
1620 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1621 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1622 chip to make 8 digital 24V inputs available via SPI. Supports
1623 CRC checksums to guard against electromagnetic interference,
1624 as well as undervoltage and overtemperature detection.
1627 tristate "Maxim MAX7301 GPIO expander"
1630 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1633 tristate "Freescale MC33880 high-side/low-side switch"
1635 SPI driver for Freescale MC33880 high-side/low-side switch.
1636 This provides GPIO interface supporting inputs and outputs.
1639 tristate "Generic parallel-in/serial-out shift register"
1641 GPIO driver for SPI compatible parallel-in/serial-out shift
1642 registers. These are input only devices.
1645 tristate "EXAR XRA1403 16-bit GPIO expander"
1648 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1651 tristate "Turris Mox Moxtet bus GPIO expander"
1654 Say yes here if you are building for the Turris Mox router.
1655 This is the driver needed for configuring the GPIOs via the Moxtet
1656 bus. For example the Mox module with SFP cage needs this driver
1657 so that phylink can use corresponding GPIOs.
1661 menu "USB GPIO expanders"
1664 config GPIO_VIPERBOARD
1665 tristate "Viperboard GPIO a & b support"
1666 depends on MFD_VIPERBOARD
1668 Say yes here to access the GPIO signals of Nano River
1669 Technologies Viperboard. There are two GPIO chips on the
1670 board: gpioa and gpiob.
1671 See viperboard API specification and Nano
1672 River Tech's viperboard.h for detailed meaning
1673 of the module parameters.
1677 menu "Virtual GPIO drivers"
1679 config GPIO_AGGREGATOR
1680 tristate "GPIO Aggregator"
1682 Say yes here to enable the GPIO Aggregator, which provides a way to
1683 aggregate existing GPIO lines into a new virtual GPIO chip.
1684 This can serve the following purposes:
1685 - Assign permissions for a collection of GPIO lines to a user,
1686 - Export a collection of GPIO lines to a virtual machine,
1687 - Provide a generic driver for a GPIO-operated device in an
1688 industrial control context, to be operated from userspace using
1689 the GPIO chardev interface.
1692 tristate "GPIO latch driver"
1694 Say yes here to enable a driver for GPIO multiplexers based on latches
1695 connected to other GPIOs.
1698 tristate "GPIO Testing Driver"
1701 This enables GPIO Testing driver, which provides a way to test GPIO
1702 subsystem through sysfs (or char device) and debugfs.
1703 User could use it through the script in
1704 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1708 tristate "VirtIO GPIO support"
1710 select GPIOLIB_IRQCHIP
1712 Say Y here to enable guest support for virtio-based GPIO controllers.
1714 These virtual GPIOs can be routed to real GPIOs or attached to
1715 simulators on the host (like QEMU).
1718 tristate "GPIO Simulator Module"
1722 This enables the GPIO simulator - a configfs-based GPIO testing