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 Require 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.
252 depends on ARCH_EP93XX
254 select GPIOLIB_IRQCHIP
257 tristate "Support for GPIO pins on XR17V352/354/358"
258 depends on SERIAL_8250_EXAR
261 Selecting this option will enable handling of GPIO pins present
262 on Exar XR17V352/354/358 chips.
265 bool "GE FPGA based GPIO"
269 Support for common GPIO functionality provided on some GE Single Board
272 This driver provides basic support (configure as input or output, read
273 and write pin state) for GPIO implemented in a number of GE single
276 config GPIO_FTGPIO010
277 bool "Faraday FTGPIO010 GPIO"
280 select GPIOLIB_IRQCHIP
281 default (ARCH_GEMINI || ARCH_MOXART)
283 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
284 Cortina systems Gemini platforms, Moxa ART and others.
286 config GPIO_GENERIC_PLATFORM
287 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
290 Say yes here to support basic platform_device memory-mapped GPIO controllers.
293 tristate "Aeroflex Gaisler GRGPIO support"
298 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
299 VHDL IP core library.
302 tristate "HiSilicon GPIO controller driver"
303 depends on (ARM64 && ACPI) || COMPILE_TEST
305 select GPIOLIB_IRQCHIP
307 Say Y or M here to build support for the HiSilicon GPIO controller
309 This GPIO controller support double-edge interrupt and multi-core
313 tristate "Nintendo Wii (Hollywood) GPIO"
316 select GPIOLIB_IRQCHIP
318 Select this to support the GPIO controller of the Nintendo Wii.
323 tristate "Intel ICH GPIO"
327 Say yes here to support the GPIO functionality of a number of Intel
328 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
329 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
330 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
335 tristate "Intel IOP GPIO"
336 depends on ARCH_IOP32X || COMPILE_TEST
339 Say yes here to support the GPIO functionality of a number of Intel
345 bool "Intel IXP4xx GPIO"
346 depends on ARM # For <asm/mach-types.h>
347 depends on ARCH_IXP4XX
349 select GPIOLIB_IRQCHIP
350 select IRQ_DOMAIN_HIERARCHY
352 Say yes here to support the GPIO functionality of a number of Intel
353 IXP4xx series of chips.
357 tristate "Xylon LogiCVC GPIO support"
358 depends on MFD_SYSCON && OF
360 Say yes here to support GPIO functionality of the Xylon LogiCVC
361 programmable logic block.
364 bool "Loongson-2/3 GPIO support"
365 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
367 driver for GPIO functionality on Loongson-2F/3A/3B processors.
370 tristate "NXP LPC18XX/43XX GPIO support"
371 default y if ARCH_LPC18XX
372 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
373 select IRQ_DOMAIN_HIERARCHY
375 Select this option to enable GPIO driver for
376 NXP LPC18XX/43XX devices.
379 tristate "NXP LPC32XX GPIO support"
380 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
382 Select this option to enable GPIO driver for
386 tristate "GPIO support for Fujitsu MB86S7x Platforms"
388 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
391 tristate "MEN 16Z127 GPIO support"
395 Say yes here to support the MEN 16Z127 GPIO Controller
397 config GPIO_MM_LANTIQ
398 bool "Lantiq Memory mapped GPIOs"
399 depends on LANTIQ && SOC_XWAY
401 This enables support for memory mapped GPIOs on the External Bus Unit
402 (EBU) found on Lantiq SoCs. The gpios are output only as they are
403 created by attaching a 16bit latch to the bus.
407 depends on PPC_MPC52xx
410 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
411 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
412 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
417 Say Y here if you're going to use hardware that connects to the
418 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
421 bool "Mediatek MT7621 GPIO Support"
422 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
425 select GPIOLIB_IRQCHIP
427 Say yes here to support the Mediatek MT7621 SoC GPIO device
431 depends on PLAT_ORION || ARCH_MVEBU
433 select GENERIC_IRQ_CHIP
437 tristate "i.MX GPIO support"
438 depends on ARCH_MXC || COMPILE_TEST
440 select GENERIC_IRQ_CHIP
443 bool "Freescale MXS GPIO support" if COMPILE_TEST
444 depends on ARCH_MXS || COMPILE_TEST
445 default y if ARCH_MXS
447 select GENERIC_IRQ_CHIP
450 tristate "Cavium OCTEON GPIO"
451 depends on CAVIUM_OCTEON_SOC
454 Say yes here to support the on-chip GPIO lines on the OCTEON
458 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
459 default y if ARCH_OMAP
461 select GENERIC_IRQ_CHIP
462 select GPIOLIB_IRQCHIP
464 Say yes here to enable GPIO support for TI OMAP SoCs.
467 tristate "PrimeCell PL061 GPIO support"
470 select GPIOLIB_IRQCHIP
472 Say yes here to support the PrimeCell PL061 GPIO device
474 config GPIO_PMIC_EIC_SPRD
475 tristate "Spreadtrum PMIC EIC support"
476 depends on MFD_SC27XX_PMIC || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
480 Say yes here to support Spreadtrum PMIC EIC device.
483 bool "PXA GPIO support"
484 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
486 Say yes here to support the PXA GPIO device
489 tristate "Renesas R-Car and RZ/G GPIO support"
490 depends on ARCH_RENESAS || COMPILE_TEST
491 select GPIOLIB_IRQCHIP
493 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
496 bool "RDA Micro GPIO controller support"
497 depends on ARCH_RDA || COMPILE_TEST
500 select GPIOLIB_IRQCHIP
502 Say Y here to support RDA Micro GPIO controller.
504 config GPIO_REALTEK_OTTO
505 tristate "Realtek Otto GPIO support"
506 depends on MACH_REALTEK_RTL
507 default MACH_REALTEK_RTL
509 select GPIOLIB_IRQCHIP
511 The GPIO controller on the Otto MIPS platform supports up to two
512 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
513 are grouped in four 8-bit wide ports.
515 When built as a module, the module will be called realtek_otto_gpio.
520 A 32-bit single register GPIO fixed in/out implementation. This
521 can be used to represent any register as a set of GPIO signals.
524 tristate "Rockchip GPIO support"
525 depends on ARCH_ROCKCHIP || COMPILE_TEST
526 select GPIOLIB_IRQCHIP
527 default ARCH_ROCKCHIP
529 Say yes here to support GPIO on Rockchip SoCs.
531 config GPIO_SAMA5D2_PIOBU
532 tristate "SAMA5D2 PIOBU GPIO support"
533 depends on MFD_SYSCON
537 Say yes here to use the PIOBU pins as GPIOs.
539 PIOBU pins on the SAMA5D2 can be used as GPIOs.
540 The difference from regular GPIOs is that they
541 maintain their value during backup/self-refresh.
544 bool "SiFive GPIO support"
546 select IRQ_DOMAIN_HIERARCHY
548 select GPIOLIB_IRQCHIP
551 Say yes here to support the GPIO device on SiFive SoCs.
554 tristate "SIOX GPIO support"
556 select GPIOLIB_IRQCHIP
558 Say yes here to support SIOX I/O devices. These are units connected
559 via a SIOX bus and have a number of fixed-direction I/O lines.
561 config GPIO_SNPS_CREG
562 bool "Synopsys GPIO via CREG (Control REGisters) driver"
563 depends on ARC || COMPILE_TEST
566 This driver supports GPIOs via CREG on various Synopsys SoCs.
567 This is a single-register MMIO GPIO driver for complex cases
568 where only several fields in register belong to GPIO lines and
569 each GPIO line owns a field with different length and on/off value.
571 config GPIO_SPEAR_SPICS
572 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
573 depends on PLAT_SPEAR
574 select GENERIC_IRQ_CHIP
576 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
579 tristate "Spreadtrum GPIO support"
580 depends on ARCH_SPRD || COMPILE_TEST
582 select GPIOLIB_IRQCHIP
584 Say yes here to support Spreadtrum GPIO device.
587 bool "STA2x11/ConneXt GPIO support"
588 depends on MFD_STA2X11
589 select GENERIC_IRQ_CHIP
591 Say yes here to support the STA2x11/ConneXt GPIO device.
592 The GPIO module has 128 GPIO pins with alternate functions.
595 bool "XWAY STP GPIOs"
596 depends on SOC_XWAY || COMPILE_TEST
599 This enables support for the Serial To Parallel (STP) unit found on
600 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
601 that can be up to 24 bit. This peripheral is aimed at driving leds.
602 Some of the gpios/leds can be auto updated by the soc with dsl and
606 tristate "GPIO based on SYSCON"
607 depends on MFD_SYSCON && OF
609 Say yes here to support GPIO functionality though SYSCON driver.
614 select GENERIC_IRQ_CHIP
618 tristate "NVIDIA Tegra GPIO support"
620 depends on ARCH_TEGRA || COMPILE_TEST
622 select GPIOLIB_IRQCHIP
623 select IRQ_DOMAIN_HIERARCHY
625 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
628 tristate "NVIDIA Tegra186 GPIO support"
629 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
630 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
632 select GPIOLIB_IRQCHIP
633 select IRQ_DOMAIN_HIERARCHY
635 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
638 tristate "TS-4800 DIO blocks and compatibles"
640 depends on SOC_IMX51 || COMPILE_TEST
643 This driver support TS-4800 FPGA GPIO controllers.
646 tristate "Cavium ThunderX/OCTEON-TX GPIO"
647 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
649 select GPIOLIB_IRQCHIP
650 select IRQ_DOMAIN_HIERARCHY
651 select IRQ_FASTEOI_HIERARCHY_HANDLERS
653 Say yes here to support the on-chip GPIO lines on the ThunderX
654 and OCTEON-TX families of SoCs.
657 tristate "UniPhier GPIO support"
658 depends on ARCH_UNIPHIER || COMPILE_TEST
660 select IRQ_DOMAIN_HIERARCHY
662 Say yes here to support UniPhier GPIOs.
666 depends on ARCH_MXC && SOC_VF610
667 select GPIOLIB_IRQCHIP
669 Say yes here to support Vybrid vf610 GPIOs.
672 tristate "Toshiba Visconti GPIO support"
673 depends on ARCH_VISCONTI || COMPILE_TEST
675 select GPIOLIB_IRQCHIP
677 select IRQ_DOMAIN_HIERARCHY
679 Say yes here to support GPIO on Tohisba Visconti.
682 tristate "NEC VR4100 series General-purpose I/O Uint support"
683 depends on CPU_VR41XX
685 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
688 tristate "VIA VX855/VX875 GPIO"
689 depends on (X86 || COMPILE_TEST) && PCI
693 Support access to the VX855/VX875 GPIO lines through the gpio library.
695 This driver provides common support for accessing the device,
696 additional drivers must be enabled in order to use the
697 functionality of the device.
700 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
701 depends on MFD_WCD934X && OF_GPIO
703 This driver is to support GPIO block found on the Qualcomm Technologies
704 Inc WCD9340/WCD9341 Audio Codec.
707 bool "APM X-Gene GPIO controller support"
708 depends on ARM64 && OF_GPIO
710 This driver is to support the GPIO block within the APM X-Gene SoC
711 platform's generic flash controller. The GPIO pins are muxed with
712 the generic flash controller's address and data pins. Say yes
713 here to enable the GFC GPIO functionality.
716 tristate "APM X-Gene GPIO standby controller support"
717 depends on (ARCH_XGENE || COMPILE_TEST)
719 select GPIOLIB_IRQCHIP
720 select IRQ_DOMAIN_HIERARCHY
722 This driver supports the GPIO block within the APM X-Gene
723 Standby Domain. Say yes here to enable the GPIO functionality.
726 tristate "Xilinx GPIO support"
727 select GPIOLIB_IRQCHIP
730 Say yes here to support the Xilinx FPGA GPIO device
733 tristate "Netlogic XLP GPIO support"
734 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
735 select GPIOLIB_IRQCHIP
737 This driver provides support for GPIO interface on Netlogic XLP MIPS64
738 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
739 XLP9XX and XLP5XX. The same GPIO controller block is also present in
740 Cavium's ThunderX2 CN99XX SoCs.
745 bool "Xtensa GPIO32 support"
747 depends on HAVE_XTENSA_GPIO32
750 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
751 and EXPSTATE (output) ports
754 bool "LSI ZEVIO SoC memory mapped GPIOs"
755 depends on ARM && OF_GPIO
757 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
760 tristate "Xilinx Zynq GPIO support"
761 depends on ARCH_ZYNQ || ARCH_ZYNQMP
762 select GPIOLIB_IRQCHIP
764 Say yes here to support Xilinx Zynq GPIO controller.
766 config GPIO_LOONGSON1
767 tristate "Loongson1 GPIO support"
768 depends on MACH_LOONGSON32
771 Say Y or M here to support GPIO on Loongson1 SoCs.
774 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
776 This option enables driver for GPIO on AMDs Fusion Controller Hub,
777 as found on G-series SOCs (eg. GX-412TC)
779 Note: This driver doesn't registers itself automatically, as it
780 needs to be provided with platform specific configuration.
781 (See eg. CONFIG_PCENGINES_APU2.)
784 bool "MStar MSC313 GPIO support"
785 depends on ARCH_MSTARV7
787 select GPIOLIB_IRQCHIP
788 select IRQ_DOMAIN_HIERARCHY
790 Say Y here to support the main GPIO block on MStar/SigmaStar
794 tristate "IDT 79RC3243X GPIO support"
795 depends on MIKROTIK_RB532 || COMPILE_TEST
797 select GPIOLIB_IRQCHIP
799 Select this option to enable GPIO driver for
800 IDT 79RC3243X based devices like Mikrotik RB532.
802 To compile this driver as a module, choose M here: the module will
803 be called gpio-idt3243x.
807 menu "Port-mapped I/O GPIO drivers"
808 depends on X86 # Unconditional I/O space access
810 config GPIO_104_DIO_48E
811 tristate "ACCES 104-DIO-48E GPIO support"
814 select GPIOLIB_IRQCHIP
816 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
817 104-DIO-24E). The base port addresses for the devices may be
818 configured via the base module parameter. The interrupt line numbers
819 for the devices may be configured via the irq module parameter.
821 config GPIO_104_IDIO_16
822 tristate "ACCES 104-IDIO-16 GPIO support"
825 select GPIOLIB_IRQCHIP
827 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
828 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
829 base port addresses for the devices may be configured via the base
830 module parameter. The interrupt line numbers for the devices may be
831 configured via the irq module parameter.
833 config GPIO_104_IDI_48
834 tristate "ACCES 104-IDI-48 GPIO support"
837 select GPIOLIB_IRQCHIP
839 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
840 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
841 the devices may be configured via the base module parameter. The
842 interrupt line numbers for the devices may be configured via the irq
846 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
848 This option enables support for GPIOs found on Fintek Super-I/O
849 chips F71869, F71869A, F71882FG, F71889F and F81866.
851 To compile this driver as a module, choose M here: the module will
852 be called f7188x-gpio.
855 tristate "Diamond Systems GPIO-MM GPIO support"
859 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
861 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
862 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
863 support for these 48 channels of digital I/O.
865 The base port addresses for the devices may be configured via the base
866 array module parameter.
869 tristate "IT87xx GPIO support"
871 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
873 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
874 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
877 To compile this driver as a module, choose M here: the module will
881 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
882 depends on (X86 || COMPILE_TEST) && ACPI
884 select GPIOLIB_IRQCHIP
886 Say yes here to support GPIO interface on Intel Poulsbo SCH,
887 Intel Tunnel Creek processor, Intel Centerton processor or
888 Intel Quark X1000 SoC.
890 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
891 powered by the core power rail and are turned off during sleep
892 modes (S3 and higher). The remaining four GPIOs are powered by
893 the Intel SCH suspend power supply. These GPIOs remain
894 active during S3. The suspend powered GPIOs can be used to wake the
895 system from the Suspend-to-RAM state.
897 The Intel Tunnel Creek processor has 5 GPIOs powered by the
898 core power rail and 9 from suspend power supply.
900 The Intel Centerton processor has a total of 30 GPIO pins.
901 Twenty-one are powered by the core power rail and 9 from the
902 suspend power supply.
904 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
905 power well and 6 from the suspend power well.
908 tristate "SMSC SCH311x SuperI/O GPIO"
910 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
911 SCH3116 "Super I/O" chipsets.
913 To compile this driver as a module, choose M here: the module will
914 be called gpio-sch311x.
917 tristate "TS-5500 DIO blocks and compatibles"
918 depends on TS5500 || COMPILE_TEST
920 This driver supports Digital I/O exposed by pin blocks found on some
921 Technologic Systems platforms. It includes, but is not limited to, 3
922 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
926 tristate "Winbond Super I/O GPIO support"
929 This option enables support for GPIOs found on Winbond Super I/O
931 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
934 You will need to provide a module parameter "gpios", or a
935 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
936 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
938 To compile this driver as a module, choose M here: the module will
939 be called gpio-winbond.
942 tristate "WinSystems WS16C48 GPIO support"
944 select GPIOLIB_IRQCHIP
946 Enables GPIO support for the WinSystems WS16C48. The base port
947 addresses for the devices may be configured via the base module
948 parameter. The interrupt line numbers for the devices may be
949 configured via the irq module parameter.
953 menu "I2C GPIO expanders"
957 tristate "ADP5588 I2C GPIO expander"
959 This option enables support for 18 GPIOs found
960 on Analog Devices ADP5588 GPIO Expanders.
962 config GPIO_ADP5588_IRQ
963 bool "Interrupt controller support for ADP5588"
964 depends on GPIO_ADP5588=y
965 select GPIOLIB_IRQCHIP
967 Say yes here to enable the adp5588 to be used as an interrupt
968 controller. It requires the driver to be built in the kernel.
971 tristate "Avionic Design N-bit GPIO expander"
973 select GPIOLIB_IRQCHIP
975 This option enables support for N GPIOs found on Avionic Design
976 I2C GPIO expanders. The register space will be extended by powers
977 of two, so the controller will need to accommodate for that. For
978 example: if a controller provides 48 pins, 6 registers will be
979 enough to represent all pins, but the driver will assume a
980 register layout for 64 pins (8 registers).
983 tristate "Gateworks PLD GPIO Expander"
986 Say yes here to provide access to the Gateworks I2C PLD GPIO
987 Expander. This is used at least on the Cambria GW2358-4.
990 tristate "Maxim MAX7300 GPIO expander"
993 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
996 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
998 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
999 Port Expanders. Each IO port on these chips has a fixed role of
1000 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1001 Input and Output (designed by 'P'). The combinations are listed
1004 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1005 max7322 (4I4O), max7323 (4P4O)
1007 16 bits: max7324 (8I8O), max7325 (8P8O),
1008 max7326 (4I12O), max7327 (4P12O)
1010 Board setup code must specify the model to use, and the start
1011 number for these GPIOs.
1013 config GPIO_MAX732X_IRQ
1014 bool "Interrupt controller support for MAX732x"
1015 depends on GPIO_MAX732X=y
1016 select GPIOLIB_IRQCHIP
1018 Say yes here to enable the max732x to be used as an interrupt
1019 controller. It requires the driver to be built in the kernel.
1021 config GPIO_MC9S08DZ60
1022 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
1023 depends on I2C=y && MACH_MX35_3DS
1025 Select this to enable the MC9S08DZ60 GPIO driver
1028 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1031 Say yes here to provide access to several register-oriented
1032 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1035 4 bits: pca9536, pca9537
1037 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1038 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1040 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1045 40 bits: pca9505, pca9698
1047 config GPIO_PCA953X_IRQ
1048 bool "Interrupt controller support for PCA953x"
1049 depends on GPIO_PCA953X
1050 select GPIOLIB_IRQCHIP
1052 Say yes here to enable the pca953x to be used as an interrupt
1053 controller. It requires the driver to be built in the kernel.
1056 tristate "PCA9570 4-Bit I2C GPO expander"
1058 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1060 To compile this driver as a module, choose M here: the module will
1061 be called gpio-pca9570.
1064 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1065 select GPIOLIB_IRQCHIP
1068 Say yes here to provide access to most "quasi-bidirectional" I2C
1069 GPIO expanders used for additional digital outputs or inputs.
1070 Most of these parts are from NXP, though TI is a second source for
1071 some of them. Compatible models include:
1073 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1074 pca9670, pca9672, pca9674, pca9674a,
1077 16 bits: pcf8575, pcf8575c, pca8575,
1078 pca9671, pca9673, pca9675
1080 Your board setup code will need to declare the expanders in
1081 use, and assign numbers to the GPIOs they expose. Those GPIOs
1082 can then be used from drivers and other kernel code, just like
1083 other GPIOs, but only accessible from task contexts.
1085 This driver provides an in-kernel interface to those GPIOs using
1086 platform-neutral GPIO calls.
1088 config GPIO_TPIC2810
1089 tristate "TPIC2810 8-Bit I2C GPO expander"
1091 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1093 To compile this driver as a module, choose M here: the module will
1094 be called gpio-tpic2810.
1097 tristate "Technologic Systems FPGA I2C GPIO"
1098 depends on SOC_IMX6 || COMPILE_TEST
1101 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1102 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1106 menu "MFD GPIO expanders"
1109 tristate "GPIO Support for ADP5520 PMIC"
1110 depends on PMIC_ADP5520
1112 This option enables support for on-chip GPIO found
1113 on Analog Devices ADP5520 PMICs.
1115 config GPIO_ALTERA_A10SR
1116 tristate "Altera Arria10 System Resource GPIO"
1117 depends on MFD_ALTERA_A10SR
1119 Driver for Arria10 Development Kit GPIO expansion which
1120 includes reads of pushbuttons and DIP switches as well
1124 tristate "Wolfson Microelectronics Arizona class devices"
1125 depends on MFD_ARIZONA
1127 Support for GPIOs on Wolfson Arizona class devices.
1130 tristate "ROHM BD70528 GPIO support"
1131 depends on MFD_ROHM_BD70528
1133 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1134 available on the ROHM PMIC in total. The GPIOs can also
1135 generate interrupts.
1137 This driver can also be built as a module. If so, the module
1138 will be called gpio-bd70528.
1141 tristate "ROHM BD71815 PMIC GPIO support"
1142 depends on MFD_ROHM_BD71828
1144 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1145 available on the ROHM PMIC.
1147 This driver can also be built as a module. If so, the module
1148 will be called gpio-bd71815.
1151 tristate "ROHM BD71828 GPIO support"
1152 depends on MFD_ROHM_BD71828
1154 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1155 available on the ROHM PMIC in total. The GPIOs are limited to
1156 outputs only and pins must be configured to GPIO outputs by
1157 OTP. Enable this only if you want to use these pins as outputs.
1159 This driver can also be built as a module. If so, the module
1160 will be called gpio-bd71828.
1162 config GPIO_BD9571MWV
1163 tristate "ROHM BD9571 GPIO support"
1164 depends on MFD_BD9571MWV
1166 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1167 available on the ROHM PMIC in total, both of which can also
1168 generate interrupts.
1170 This driver can also be built as a module. If so, the module
1171 will be called gpio-bd9571mwv.
1173 config GPIO_CRYSTAL_COVE
1174 tristate "GPIO support for Crystal Cove PMIC"
1175 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1176 select GPIOLIB_IRQCHIP
1178 Support for GPIO pins on Crystal Cove PMIC.
1180 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1183 This driver can also be built as a module. If so, the module will be
1184 called gpio-crystalcove.
1187 tristate "AMD CS5535/CS5536 GPIO support"
1188 depends on X86 || MIPS || COMPILE_TEST
1189 depends on MFD_CS5535
1191 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1192 can be used for quite a number of things. The CS5535/6 is found on
1193 AMD Geode and Lemote Yeeloong devices.
1198 tristate "Dialog DA9052 GPIO"
1199 depends on PMIC_DA9052
1201 Say yes here to enable the GPIO driver for the DA9052 chip.
1204 tristate "Dialog Semiconductor DA9055 GPIO"
1205 depends on MFD_DA9055
1207 Say yes here to enable the GPIO driver for the DA9055 chip.
1209 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1210 be controller by this driver.
1212 If driver is built as a module it will be called gpio-da9055.
1215 tristate "Diolan DLN2 GPIO support"
1217 select GPIOLIB_IRQCHIP
1220 Select this option to enable GPIO driver for the Diolan DLN2
1223 This driver can also be built as a module. If so, the module
1224 will be called gpio-dln2.
1227 bool "HTC EGPIO support"
1230 This driver supports the CPLD egpio chip present on
1231 several HTC phones. It provides basic support for input
1232 pins, output pins, and irqs.
1234 config GPIO_JANZ_TTL
1235 tristate "Janz VMOD-TTL Digital IO Module"
1236 depends on MFD_JANZ_CMODIO
1238 This enables support for the Janz VMOD-TTL Digital IO module.
1239 This driver provides support for driving the pins in output
1240 mode only. Input mode is not supported.
1243 tristate "Kontron ETX / COMexpress GPIO"
1244 depends on MFD_KEMPLD
1246 This enables support for the PLD GPIO interface on some Kontron ETX
1247 and COMexpress (ETXexpress) modules.
1249 This driver can also be built as a module. If so, the module will be
1253 tristate "TI/National Semiconductor LP3943 GPIO expander"
1254 depends on MFD_LP3943
1256 GPIO driver for LP3943 MFD.
1257 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1258 Open drain outputs are required for this usage.
1261 tristate "TI LP873X GPO"
1262 depends on MFD_TI_LP873X
1264 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1267 This driver can also be built as a module. If so, the module will be
1271 tristate "TI LP87565 GPIO"
1272 depends on MFD_TI_LP87565
1274 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1277 This driver can also be built as a module. If so, the module will be
1278 called gpio-lp87565.
1281 tristate "Cirrus Logic Madera class codecs"
1282 depends on PINCTRL_MADERA
1284 Support for GPIOs on Cirrus Logic Madera class codecs.
1286 config GPIO_MAX77620
1287 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1288 depends on MFD_MAX77620
1289 select GPIOLIB_IRQCHIP
1291 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1292 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1293 driver also provides interrupt support for each of the gpios.
1294 Say yes here to enable the max77620 to be used as gpio controller.
1296 config GPIO_MAX77650
1297 tristate "Maxim MAX77650/77651 GPIO support"
1298 depends on MFD_MAX77650
1300 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1301 These chips have a single pin that can be configured as GPIO.
1304 bool "TI PALMAS series PMICs GPIO"
1305 depends on MFD_PALMAS
1307 Select this option to enable GPIO driver for the TI PALMAS
1311 bool "RICOH RC5T583 GPIO"
1312 depends on MFD_RC5T583
1314 Select this option to enable GPIO driver for the Ricoh RC5T583
1316 This driver provides the support for driving/reading the gpio pins
1317 of RC5T583 device through standard gpio library.
1319 config GPIO_SL28CPLD
1320 tristate "Kontron sl28cpld GPIO support"
1321 depends on MFD_SL28CPLD || COMPILE_TEST
1323 select GPIOLIB_IRQCHIP
1326 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1328 This driver can also be built as a module. If so, the module will be
1329 called gpio-sl28cpld.
1333 depends on MFD_STMPE
1335 select GPIOLIB_IRQCHIP
1337 This enables support for the GPIOs found on the STMPE I/O
1341 bool "TC3589X GPIOs"
1342 depends on MFD_TC3589X
1344 select GPIOLIB_IRQCHIP
1346 This enables support for the GPIOs found on the TC3589X
1349 config GPIO_TIMBERDALE
1350 bool "Support for timberdale GPIO IP"
1351 depends on MFD_TIMBERDALE
1353 Add support for the GPIO IP in the timberdale FPGA.
1355 config GPIO_TPS65086
1356 tristate "TI TPS65086 GPO"
1357 depends on MFD_TPS65086
1359 This driver supports the GPO on TI TPS65086x PMICs.
1361 config GPIO_TPS65218
1362 tristate "TPS65218 GPIO"
1363 depends on MFD_TPS65218
1365 Select this option to enable GPIO driver for the TPS65218
1368 config GPIO_TPS6586X
1369 bool "TPS6586X GPIO"
1370 depends on MFD_TPS6586X
1372 Select this option to enable GPIO driver for the TPS6586X
1375 config GPIO_TPS65910
1376 bool "TPS65910 GPIO"
1377 depends on MFD_TPS65910
1379 Select this option to enable GPIO driver for the TPS65910
1382 config GPIO_TPS65912
1383 tristate "TI TPS65912 GPIO"
1384 depends on MFD_TPS65912
1386 This driver supports TPS65912 gpio chip
1388 config GPIO_TPS68470
1389 bool "TPS68470 GPIO"
1390 depends on INTEL_SKL_INT3472
1392 Select this option to enable GPIO driver for the TPS68470
1394 There are 7 GPIOs and few sensor related GPIOs supported
1395 by the TPS68470. While the 7 GPIOs can be configured as
1396 input or output as appropriate, the sensor related GPIOs
1397 are "output only" GPIOs.
1399 This driver config is bool, as the GPIO functionality
1400 of the TPS68470 must be available before dependent
1404 tristate "TQ-Systems QTMX86 GPIO"
1405 depends on MFD_TQMX86 || COMPILE_TEST
1406 depends on HAS_IOPORT_MAP
1407 select GPIOLIB_IRQCHIP
1409 This driver supports GPIO on the TQMX86 IO controller.
1412 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1413 depends on TWL4030_CORE
1415 Say yes here to access the GPIO signals of various multi-function
1416 power management chips from Texas Instruments.
1419 tristate "TWL6040 GPO"
1420 depends on TWL6040_CORE
1422 Say yes here to access the GPO signals of twl6040
1423 audio chip from Texas Instruments.
1426 tristate "Philips UCB1400 GPIO"
1427 depends on UCB1400_CORE
1429 This enables support for the Philips UCB1400 GPIO pins.
1430 The UCB1400 is an AC97 audio codec.
1432 config GPIO_WHISKEY_COVE
1433 tristate "GPIO support for Whiskey Cove PMIC"
1434 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1435 select GPIOLIB_IRQCHIP
1437 Support for GPIO pins on Whiskey Cove PMIC.
1439 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1442 This driver can also be built as a module. If so, the module will be
1446 tristate "WM831x GPIOs"
1447 depends on MFD_WM831X
1449 Say yes here to access the GPIO signals of WM831x power management
1450 chips from Wolfson Microelectronics.
1453 tristate "WM8350 GPIOs"
1454 depends on MFD_WM8350
1456 Say yes here to access the GPIO signals of WM8350 power management
1457 chips from Wolfson Microelectronics.
1460 tristate "WM8994 GPIOs"
1461 depends on MFD_WM8994
1463 Say yes here to access the GPIO signals of WM8994 audio hub
1464 CODECs from Wolfson Microelectronics.
1468 menu "PCI GPIO expanders"
1472 tristate "AMD 8111 GPIO driver"
1473 depends on X86 || COMPILE_TEST
1474 depends on HAS_IOPORT_MAP
1476 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1478 Note, that usually system firmware/ACPI handles GPIO pins on their
1479 own and users might easily break their systems with uncarefull usage
1485 tristate "BT8XX GPIO abuser"
1486 depends on VIDEO_BT848=n
1488 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1489 as a cheap PCI GPIO card.
1491 This chip can be found on Miro, Hauppauge and STB TV-cards.
1493 The card needs to be physically altered for using it as a
1494 GPIO card. For more information on how to build a GPIO card
1495 from a BT8xx TV card, see the documentation file at
1496 Documentation/driver-api/gpio/bt8xxgpio.rst
1500 config GPIO_MERRIFIELD
1501 tristate "Intel Merrifield GPIO support"
1502 depends on X86_INTEL_MID
1503 select GPIOLIB_IRQCHIP
1505 Say Y here to support Intel Merrifield GPIO.
1508 tristate "Mellanox BlueField SoC GPIO"
1509 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1512 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1515 tristate "Mellanox BlueField 2 SoC GPIO"
1516 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1519 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1522 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1523 depends on X86 || COMPILE_TEST
1524 select GENERIC_IRQ_CHIP
1526 ML7213 is companion chip for Intel Atom E6xx series.
1527 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1528 Hub) which is for IVI(In-Vehicle Infotainment) use.
1529 This driver can access the IOH's GPIO device.
1532 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1533 depends on X86_32 || MIPS || COMPILE_TEST
1534 select GENERIC_IRQ_CHIP
1536 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1537 which is an IOH(Input/Output Hub) for x86 embedded processor.
1538 This driver can access PCH GPIO device.
1540 This driver also can be used for LAPIS Semiconductor IOH(Input/
1541 Output Hub), ML7223 and ML7831.
1542 ML7223 IOH is for MP(Media Phone) use.
1543 ML7831 IOH is for general purpose use.
1544 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1545 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1547 config GPIO_PCI_IDIO_16
1548 tristate "ACCES PCI-IDIO-16 GPIO support"
1549 select GPIOLIB_IRQCHIP
1551 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1552 generated when any of the inputs change state (low to high or high to
1553 low). Input filter control is not supported by this driver, and the
1554 input filters are deactivated by this driver.
1556 config GPIO_PCIE_IDIO_24
1557 tristate "ACCES PCIe-IDIO-24 GPIO support"
1558 select GPIOLIB_IRQCHIP
1560 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1561 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1562 when any of the inputs change state (low to high or high to low).
1563 Input filter control is not supported by this driver, and the input
1564 filters are deactivated by this driver.
1567 tristate "RDC R-321x GPIO support"
1571 Support for the RDC R321x SoC GPIOs over southbridge
1572 PCI configuration space.
1574 config GPIO_SODAVILLE
1575 bool "Intel Sodaville GPIO support"
1576 depends on X86 && OF
1578 select GENERIC_IRQ_CHIP
1580 Say Y here to support Intel Sodaville GPIO.
1584 menu "SPI GPIO expanders"
1585 depends on SPI_MASTER
1588 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1591 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1592 shift registers. This driver can be used to provide access
1593 to more gpio outputs.
1595 config GPIO_MAX3191X
1596 tristate "Maxim MAX3191x industrial serializer"
1599 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1600 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1601 chip to make 8 digital 24V inputs available via SPI. Supports
1602 CRC checksums to guard against electromagnetic interference,
1603 as well as undervoltage and overtemperature detection.
1606 tristate "Maxim MAX7301 GPIO expander"
1609 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1612 tristate "Freescale MC33880 high-side/low-side switch"
1614 SPI driver for Freescale MC33880 high-side/low-side switch.
1615 This provides GPIO interface supporting inputs and outputs.
1618 tristate "Generic parallel-in/serial-out shift register"
1620 GPIO driver for SPI compatible parallel-in/serial-out shift
1621 registers. These are input only devices.
1624 tristate "EXAR XRA1403 16-bit GPIO expander"
1627 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1630 tristate "Turris Mox Moxtet bus GPIO expander"
1633 Say yes here if you are building for the Turris Mox router.
1634 This is the driver needed for configuring the GPIOs via the Moxtet
1635 bus. For example the Mox module with SFP cage needs this driver
1636 so that phylink can use corresponding GPIOs.
1640 menu "USB GPIO expanders"
1643 config GPIO_VIPERBOARD
1644 tristate "Viperboard GPIO a & b support"
1645 depends on MFD_VIPERBOARD
1647 Say yes here to access the GPIO signals of Nano River
1648 Technologies Viperboard. There are two GPIO chips on the
1649 board: gpioa and gpiob.
1650 See viperboard API specification and Nano
1651 River Tech's viperboard.h for detailed meaning
1652 of the module parameters.
1656 menu "Virtual GPIO drivers"
1658 config GPIO_AGGREGATOR
1659 tristate "GPIO Aggregator"
1661 Say yes here to enable the GPIO Aggregator, which provides a way to
1662 aggregate existing GPIO lines into a new virtual GPIO chip.
1663 This can serve the following purposes:
1664 - Assign permissions for a collection of GPIO lines to a user,
1665 - Export a collection of GPIO lines to a virtual machine,
1666 - Provide a generic driver for a GPIO-operated device in an
1667 industrial control context, to be operated from userspace using
1668 the GPIO chardev interface.
1671 tristate "GPIO Testing Driver"
1674 This enables GPIO Testing driver, which provides a way to test GPIO
1675 subsystem through sysfs (or char device) and debugfs.
1676 User could use it through the script in
1677 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in