1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
9 This enables GPIO support through the generic GPIO library.
10 You only need to enable this if you also want to enable
11 one or more of the GPIO drivers below.
17 config GPIOLIB_FASTPATH_LIMIT
18 int "Maximum number of GPIOs for fast path"
22 This adjusts the point at which certain APIs will switch from
23 using a stack allocated buffer to a dynamically allocated buffer.
25 You shouldn't need to change this unless you really need to
26 optimize either stack space or performance. Change this carefully
27 since setting an incorrect value could cause stack corruption.
38 config GPIOLIB_IRQCHIP
42 config OF_GPIO_MM_GPIOCHIP
45 This adds support for the legacy 'struct of_mm_gpio_chip' interface
46 from PowerPC. Existing drivers using this interface need to select
47 this symbol, but new drivers should use the generic gpio-regmap
48 infrastructure instead.
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 config GPIO_SWNODE_UNDEFINED
109 This adds a special place holder for software nodes to contain an
110 undefined GPIO reference, this is primarily used by SPI to allow a
111 list of GPIO chip selects to mark a certain chip select as being
112 controlled the SPI device's internal chip select mechanism and not
115 # put drivers in the right section, in alphabetical order
117 # This symbol is selected by both I2C and SPI expanders
124 select GPIOLIB_IRQCHIP
127 Enables support for the idio-16 library functions. The idio-16 library
128 provides functions to facilitate communication with devices within the
129 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
131 If built as a module its name will be gpio-idio-16.
133 menu "Memory mapped GPIO drivers"
136 config GPIO_74XX_MMIO
137 tristate "GPIO driver for 74xx-ICs with MMIO access"
141 Say yes here to support GPIO functionality for 74xx-compatible ICs
142 with MMIO access. Compatible models include:
143 1 bit: 741G125 (Input), 741G74 (Output)
144 2 bits: 742G125 (Input), 7474 (Output)
145 4 bits: 74125 (Input), 74175 (Output)
146 6 bits: 74365 (Input), 74174 (Output)
147 8 bits: 74244 (Input), 74273 (Output)
148 16 bits: 741624 (Input), 7416374 (Output)
151 tristate "Altera GPIO"
153 select GPIOLIB_IRQCHIP
154 select OF_GPIO_MM_GPIOCHIP
156 Say Y or M here to build support for the Altera PIO device.
158 If driver is built as a module it will be called gpio-altera.
161 tristate "AMD Promontory GPIO support"
165 Driver for GPIO functionality on Promontory IOHub.
166 Requires ACPI ASL code to enumerate as a platform device.
169 tristate "Aspeed GPIO support"
170 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
171 select GPIOLIB_IRQCHIP
173 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
175 config GPIO_ASPEED_SGPIO
176 bool "Aspeed SGPIO support"
177 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
179 select GPIOLIB_IRQCHIP
181 Say Y here to support Aspeed AST2500 SGPIO functionality.
184 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
186 depends on ATH79 || COMPILE_TEST
188 select GPIOLIB_IRQCHIP
190 Select this option to enable GPIO driver for
191 Atheros AR71XX/AR724X/AR913X SoC devices.
193 config GPIO_RASPBERRYPI_EXP
194 tristate "Raspberry Pi 3 GPIO Expander"
195 default RASPBERRYPI_FIRMWARE
197 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
198 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
199 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
201 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
202 the firmware mailbox to communicate with VideoCore on BCM283x chips.
205 bool "Broadcom Kona GPIO"
206 depends on ARCH_BCM_MOBILE || COMPILE_TEST
208 Turn on GPIO support for Broadcom "Kona" chips.
210 config GPIO_BCM_XGS_IPROC
211 tristate "BRCM XGS iProc GPIO support"
212 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
214 select GPIOLIB_IRQCHIP
215 default ARCH_BCM_IPROC
217 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
220 tristate "BRCMSTB GPIO support"
221 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
222 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
226 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
229 tristate "Cadence GPIO support"
232 select GPIOLIB_IRQCHIP
234 Say yes here to enable support for Cadence GPIO controller.
237 tristate "CLPS711X GPIO support"
238 depends on ARCH_CLPS711X || COMPILE_TEST
241 Say yes here to support GPIO on CLPS711X SoCs.
244 tristate "TI Davinci/Keystone GPIO support"
245 default y if ARCH_DAVINCI
246 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
248 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
251 tristate "Synopsys DesignWare APB GPIO driver"
253 select GPIOLIB_IRQCHIP
255 Say Y or M here to build support for the Synopsys DesignWare APB
259 tristate "Spreadtrum EIC support"
260 depends on ARCH_SPRD || COMPILE_TEST
262 select GPIOLIB_IRQCHIP
264 Say yes here to support Spreadtrum EIC device.
267 tristate "Emma Mobile GPIO"
268 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
270 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
273 tristate "Airoha GPIO support"
274 depends on ARCH_AIROHA
277 select GPIOLIB_IRQCHIP
279 Say Y or M here to support the GPIO controller block on the
280 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
284 depends on ARCH_EP93XX
286 select GPIOLIB_IRQCHIP
289 tristate "Support for GPIO pins on XR17V352/354/358"
290 depends on SERIAL_8250_EXAR
293 Selecting this option will enable handling of GPIO pins present
294 on Exar XR17V352/354/358 chips.
297 bool "GE FPGA based GPIO"
298 depends on GE_FPGA || COMPILE_TEST
301 Support for common GPIO functionality provided on some GE Single Board
304 This driver provides basic support (configure as input or output, read
305 and write pin state) for GPIO implemented in a number of GE single
308 config GPIO_FTGPIO010
309 bool "Faraday FTGPIO010 GPIO"
312 select GPIOLIB_IRQCHIP
313 default (ARCH_GEMINI || ARCH_MOXART)
315 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
316 Cortina systems Gemini platforms, Moxa ART and others.
318 config GPIO_GENERIC_PLATFORM
319 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
322 Say yes here to support basic platform_device memory-mapped GPIO controllers.
324 config GPIO_GRANITERAPIDS
325 tristate "Intel Granite Rapids-D vGPIO support"
326 depends on X86 || COMPILE_TEST
327 select GPIOLIB_IRQCHIP
329 Select this to enable virtual GPIO support on platforms with the
332 - Intel Granite Rapids-D
334 The driver enables basic GPIO functionality and implements interrupt
335 support. The virtual GPIO driver controls GPIO lines via a firmware
336 interface. The physical GPIO pins reside on device that is external
337 from the main SoC package, such as a BMC or a CPLD.
339 To compile this driver as a module, choose M here: the module will
340 be called gpio-graniterapids.
343 tristate "Aeroflex Gaisler GRGPIO support"
348 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
349 VHDL IP core library.
352 tristate "HiSilicon GPIO controller driver"
353 depends on ARM64 || COMPILE_TEST
355 select GPIOLIB_IRQCHIP
357 Say Y or M here to build support for the HiSilicon GPIO controller
359 This GPIO controller supports double-edge interrupt and multi-core
363 tristate "Nintendo Wii (Hollywood) GPIO"
366 select GPIOLIB_IRQCHIP
368 Select this to support the GPIO controller of the Nintendo Wii.
373 tristate "Intel ICH GPIO"
377 Say yes here to support the GPIO functionality of a number of Intel
378 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
379 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
380 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
389 bool "Intel IXP4xx GPIO"
390 depends on ARCH_IXP4XX
393 select GPIOLIB_IRQCHIP
394 select IRQ_DOMAIN_HIERARCHY
396 Say yes here to support the GPIO functionality of a number of Intel
397 IXP4xx series of chips.
402 tristate "Xylon LogiCVC GPIO support"
403 depends on MFD_SYSCON && OF
405 Say yes here to support GPIO functionality of the Xylon LogiCVC
406 programmable logic block.
409 bool "Loongson-2/3 GPIO support"
410 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
412 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
414 config GPIO_LOONGSON_64BIT
415 tristate "Loongson 64 bit GPIO support"
416 depends on LOONGARCH || COMPILE_TEST
420 Say yes here to support the GPIO functionality of a number of
421 Loongson series of chips. The Loongson GPIO controller supports
422 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
423 the remaining 56 are reused with other functions, with edge or
424 level triggered interrupts.
427 tristate "NXP LPC18XX/43XX GPIO support"
428 default y if ARCH_LPC18XX
429 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
430 select IRQ_DOMAIN_HIERARCHY
432 Select this option to enable GPIO driver for
433 NXP LPC18XX/43XX devices.
436 tristate "NXP LPC32XX GPIO support"
437 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
439 Select this option to enable GPIO driver for
443 tristate "GPIO support for Fujitsu MB86S7x Platforms"
445 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
448 tristate "MEN 16Z127 GPIO support"
452 Say yes here to support the MEN 16Z127 GPIO Controller.
454 config GPIO_MM_LANTIQ
455 bool "Lantiq Memory mapped GPIOs"
456 depends on LANTIQ && SOC_XWAY
457 select OF_GPIO_MM_GPIOCHIP
459 This enables support for memory mapped GPIOs on the External Bus Unit
460 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
461 created by attaching a 16-bit latch to the bus.
465 depends on PPC_MPC52xx
466 select OF_GPIO_MM_GPIOCHIP
469 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
470 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
471 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
476 Say Y here if you're going to use hardware that connects to the
477 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
480 bool "Mediatek MT7621 GPIO Support"
481 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
484 select GPIOLIB_IRQCHIP
486 Say yes here to support the Mediatek MT7621 SoC GPIO device.
490 depends on PLAT_ORION || ARCH_MVEBU
492 select GENERIC_IRQ_CHIP
496 tristate "i.MX GPIO support"
497 depends on ARCH_MXC || COMPILE_TEST
499 select GENERIC_IRQ_CHIP
502 bool "Freescale MXS GPIO support" if COMPILE_TEST
503 depends on ARCH_MXS || COMPILE_TEST
504 default y if ARCH_MXS
506 select GENERIC_IRQ_CHIP
509 bool "Nomadik GPIO driver"
510 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
511 select GPIOLIB_IRQCHIP
513 Say yes here to support the Nomadik SoC GPIO block. This block is also
514 used by the Mobileye EyeQ5 SoC.
516 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
517 It is deeply interconnected with the associated pinctrl driver as GPIO
518 registers handle muxing ("alternate functions") as well.
520 config GPIO_NPCM_SGPIO
521 bool "Nuvoton SGPIO support"
522 depends on ARCH_NPCM || COMPILE_TEST
523 select GPIOLIB_IRQCHIP
525 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
528 tristate "Cavium OCTEON GPIO"
529 depends on CAVIUM_OCTEON_SOC
532 Say yes here to support the on-chip GPIO lines on the OCTEON
536 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
537 default y if ARCH_OMAP
539 select GENERIC_IRQ_CHIP
540 select GPIOLIB_IRQCHIP
542 Say yes here to enable GPIO support for TI OMAP SoCs.
545 tristate "PrimeCell PL061 GPIO support"
548 select GPIOLIB_IRQCHIP
550 Say yes here to support the PrimeCell PL061 GPIO device.
553 bool "PXA GPIO support"
554 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
556 Say yes here to support the PXA GPIO device.
559 tristate "Renesas R-Car and RZ/G GPIO support"
560 depends on ARCH_RENESAS || COMPILE_TEST
561 select GPIOLIB_IRQCHIP
563 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
566 bool "RDA Micro GPIO controller support"
567 depends on ARCH_RDA || COMPILE_TEST
570 select GPIOLIB_IRQCHIP
572 Say Y here to support RDA Micro GPIO controller.
574 config GPIO_REALTEK_OTTO
575 tristate "Realtek Otto GPIO support"
576 depends on MACH_REALTEK_RTL
577 default MACH_REALTEK_RTL
579 select GPIOLIB_IRQCHIP
581 The GPIO controller on the Otto MIPS platform supports up to two
582 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
583 are grouped in four 8-bit wide ports.
585 When built as a module, the module will be called realtek_otto_gpio.
590 A 32-bit single register GPIO fixed in/out implementation. This
591 can be used to represent any register as a set of GPIO signals.
594 tristate "Rockchip GPIO support"
595 depends on ARCH_ROCKCHIP || COMPILE_TEST
596 select GENERIC_IRQ_CHIP
597 select GPIOLIB_IRQCHIP
598 default ARCH_ROCKCHIP
600 Say yes here to support GPIO on Rockchip SoCs.
603 tristate "Realtek DHC GPIO support"
604 depends on ARCH_REALTEK
606 select GPIOLIB_IRQCHIP
608 This option enables support for GPIOs found on Realtek DHC(Digital
609 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
610 RTD1319D, RTD1395, RTD1619 and RTD1619B.
612 Say yes here to support GPIO functionality and GPIO interrupt on
615 config GPIO_SAMA5D2_PIOBU
616 tristate "SAMA5D2 PIOBU GPIO support"
617 depends on MFD_SYSCON
619 depends on ARCH_AT91 || COMPILE_TEST
622 Say yes here to use the PIOBU pins as GPIOs.
624 PIOBU pins on the SAMA5D2 can be used as GPIOs.
625 The difference from regular GPIOs is that they
626 maintain their value during backup/self-refresh.
629 tristate "SiFive GPIO support"
631 select IRQ_DOMAIN_HIERARCHY
633 select GPIOLIB_IRQCHIP
636 Say yes here to support the GPIO device on SiFive SoCs.
639 tristate "SIOX GPIO support"
641 select GPIOLIB_IRQCHIP
643 Say yes here to support SIOX I/O devices. These are units connected
644 via a SIOX bus and have a number of fixed-direction I/O lines.
646 config GPIO_SNPS_CREG
647 bool "Synopsys GPIO via CREG (Control REGisters) driver"
648 depends on ARC || COMPILE_TEST
651 This driver supports GPIOs via CREG on various Synopsys SoCs.
652 This is a single-register MMIO GPIO driver for complex cases
653 where only several fields in register belong to GPIO lines and
654 each GPIO line owns a field with different length and on/off value.
656 config GPIO_SPEAR_SPICS
657 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
658 depends on PLAT_SPEAR
659 select GENERIC_IRQ_CHIP
661 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
664 tristate "Spreadtrum GPIO support"
665 depends on ARCH_SPRD || COMPILE_TEST
667 select GPIOLIB_IRQCHIP
669 Say yes here to support Spreadtrum GPIO device.
672 bool "XWAY STP GPIOs"
673 depends on SOC_XWAY || COMPILE_TEST
676 This enables support for the Serial To Parallel (STP) unit found on
677 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
678 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
679 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
683 tristate "GPIO based on SYSCON"
684 depends on MFD_SYSCON && OF
686 Say yes here to support GPIO functionality though SYSCON driver.
690 select GPIOLIB_IRQCHIP
692 GPIO support for Intel Tangier and compatible platforms.
697 If built as a module its name will be gpio-tangier.
702 select GENERIC_IRQ_CHIP
706 tristate "NVIDIA Tegra GPIO support"
708 depends on ARCH_TEGRA || COMPILE_TEST
710 select GPIOLIB_IRQCHIP
711 select IRQ_DOMAIN_HIERARCHY
713 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
716 tristate "NVIDIA Tegra186 GPIO support"
717 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
718 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
720 select GPIOLIB_IRQCHIP
721 select IRQ_DOMAIN_HIERARCHY
723 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
726 tristate "TS-4800 DIO blocks and compatibles"
728 depends on SOC_IMX51 || COMPILE_TEST
731 This driver support TS-4800 FPGA GPIO controllers.
734 tristate "Cavium ThunderX/OCTEON-TX GPIO"
735 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
737 select GPIOLIB_IRQCHIP
738 select IRQ_DOMAIN_HIERARCHY
739 select IRQ_FASTEOI_HIERARCHY_HANDLERS
741 Say yes here to support the on-chip GPIO lines on the ThunderX
742 and OCTEON-TX families of SoCs.
745 tristate "UniPhier GPIO support"
746 depends on ARCH_UNIPHIER || COMPILE_TEST
748 select IRQ_DOMAIN_HIERARCHY
750 Say yes here to support UniPhier GPIOs.
753 bool "VF610 GPIO support"
754 default y if SOC_VF610
755 depends on ARCH_MXC || COMPILE_TEST
756 select GPIOLIB_IRQCHIP
758 Say yes here to support i.MX or Vybrid vf610 GPIOs.
761 tristate "Toshiba Visconti GPIO support"
762 depends on ARCH_VISCONTI || COMPILE_TEST
764 select GPIOLIB_IRQCHIP
766 select IRQ_DOMAIN_HIERARCHY
768 Say yes here to support GPIO on Tohisba Visconti.
771 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
772 depends on MFD_WCD934X && OF_GPIO
774 This driver is to support GPIO block found on the Qualcomm Technologies
775 Inc WCD9340/WCD9341 Audio Codec.
778 bool "APM X-Gene GPIO controller support"
779 depends on ARM64 && OF_GPIO
781 This driver is to support the GPIO block within the APM X-Gene SoC
782 platform's generic flash controller. The GPIO pins are muxed with
783 the generic flash controller's address and data pins. Say yes
784 here to enable the GFC GPIO functionality.
787 tristate "APM X-Gene GPIO standby controller support"
788 depends on (ARCH_XGENE || COMPILE_TEST)
790 select GPIOLIB_IRQCHIP
791 select IRQ_DOMAIN_HIERARCHY
793 This driver supports the GPIO block within the APM X-Gene
794 Standby Domain. Say yes here to enable the GPIO functionality.
797 tristate "Xilinx GPIO support"
798 select GPIOLIB_IRQCHIP
801 Say yes here to support the Xilinx FPGA GPIO device.
804 tristate "Cavium ThunderX2 GPIO support"
805 depends on ARCH_THUNDER2 || COMPILE_TEST
806 select GPIOLIB_IRQCHIP
808 This driver provides support for GPIO interface on Cavium's ThunderX2
809 CN99XX SoCs (Originally from Netlogic XLP).
814 bool "Xtensa GPIO32 support"
816 depends on HAVE_XTENSA_GPIO32
819 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
820 and EXPSTATE (output) ports.
823 bool "LSI ZEVIO SoC memory mapped GPIOs"
826 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
829 tristate "Xilinx Zynq GPIO support"
830 depends on ARCH_ZYNQ || ARCH_ZYNQMP
831 select GPIOLIB_IRQCHIP
833 Say yes here to support Xilinx Zynq GPIO controller.
835 config GPIO_ZYNQMP_MODEPIN
836 tristate "ZynqMP ps-mode pin GPIO configuration driver"
837 depends on ZYNQMP_FIRMWARE
838 default ZYNQMP_FIRMWARE
840 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
843 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
844 is 4-bits boot mode pins. It sets and gets the status of
845 the ps-mode pin. Every pin can be configured as input/output.
847 config GPIO_LOONGSON1
848 tristate "Loongson1 GPIO support"
849 depends on MACH_LOONGSON32
852 Say Y or M here to support GPIO on Loongson1 SoCs.
855 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
857 This option enables driver for GPIO on AMD's Fusion Controller Hub,
858 as found on G-series SOCs (e.g. GX-412TC).
860 Note: This driver doesn't register itself automatically, as it
861 needs to be provided with platform-specific configuration.
862 (See e.g. CONFIG_PCENGINES_APU2.)
865 bool "MStar MSC313 GPIO support"
866 depends on ARCH_MSTARV7
868 select GPIOLIB_IRQCHIP
869 select IRQ_DOMAIN_HIERARCHY
871 Say Y here to support the main GPIO block on MStar/SigmaStar
875 tristate "IDT 79RC3243X GPIO support"
876 depends on MIKROTIK_RB532 || COMPILE_TEST
878 select GPIOLIB_IRQCHIP
880 Select this option to enable GPIO driver for
881 IDT 79RC3243X-based devices like Mikrotik RB532.
883 To compile this driver as a module, choose M here: the module will
884 be called gpio-idt3243x.
888 menu "Port-mapped I/O GPIO drivers"
889 depends on X86 && HAS_IOPORT # I/O space access
892 tristate "VIA VX855/VX875 GPIO"
897 Support access to the VX855/VX875 GPIO lines through the GPIO library.
899 This driver provides common support for accessing the device.
900 Additional drivers must be enabled in order to use the
901 functionality of the device.
907 Enables support for the i8255 interface library functions. The i8255
908 interface library provides functions to facilitate communication with
909 interfaces compatible with the venerable Intel 8255 Programmable
910 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
911 in the early 1970s but compatible interfaces are nowadays typically
912 found embedded in larger VLSI processing chips and FPGA components.
914 If built as a module its name will be gpio-i8255.
916 config GPIO_104_DIO_48E
917 tristate "ACCES 104-DIO-48E GPIO support"
922 select GPIOLIB_IRQCHIP
926 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
927 104-DIO-24E). The base port addresses for the devices may be
928 configured via the base module parameter. The interrupt line numbers
929 for the devices may be configured via the irq module parameter.
931 config GPIO_104_IDIO_16
932 tristate "ACCES 104-IDIO-16 GPIO support"
938 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
939 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
940 base port addresses for the devices may be configured via the base
941 module parameter. The interrupt line numbers for the devices may be
942 configured via the irq module parameter.
944 config GPIO_104_IDI_48
945 tristate "ACCES 104-IDI-48 GPIO support"
950 select GPIOLIB_IRQCHIP
953 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
954 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
955 the devices may be configured via the base module parameter. The
956 interrupt line numbers for the devices may be configured via the irq
960 tristate "Fintek and Nuvoton Super-I/O GPIO support"
962 This option enables support for GPIOs found on Fintek Super-I/O
963 chips F71869, F71869A, F71882FG, F71889F and F81866.
964 As well as Nuvoton Super-I/O chip NCT6126D.
966 To compile this driver as a module, choose M here: the module will
967 be called f7188x-gpio.
970 tristate "Diamond Systems GPIO-MM GPIO support"
976 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
978 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
979 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
980 support for these 48 channels of digital I/O.
982 The base port addresses for the devices may be configured via the base
983 array module parameter.
986 tristate "IT87xx GPIO support"
988 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
990 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
991 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
994 To compile this driver as a module, choose M here: the module will
998 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
999 depends on (X86 || COMPILE_TEST) && ACPI
1001 select GPIOLIB_IRQCHIP
1003 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1004 Intel Tunnel Creek processor, Intel Centerton processor or
1005 Intel Quark X1000 SoC.
1007 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1008 powered by the core power rail and are turned off during sleep
1009 modes (S3 and higher). The remaining four GPIOs are powered by
1010 the Intel SCH suspend power supply. These GPIOs remain
1011 active during S3. The suspend-powered GPIOs can be used to wake the
1012 system from the Suspend-to-RAM state.
1014 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1015 core power rail and 9 from suspend power supply.
1017 The Intel Centerton processor has a total of 30 GPIO pins.
1018 Twenty-one are powered by the core power rail and 9 from the
1019 suspend power supply.
1021 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1022 power well and 6 from the suspend power well.
1025 tristate "SMSC SCH311x SuperI/O GPIO"
1027 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1028 SCH3116 "Super I/O" chipsets.
1030 To compile this driver as a module, choose M here: the module will
1031 be called gpio-sch311x.
1034 tristate "TS-5500 DIO blocks and compatibles"
1035 depends on TS5500 || COMPILE_TEST
1037 This driver supports Digital I/O exposed by pin blocks found on some
1038 Technologic Systems platforms. It includes, but is not limited to, 3
1039 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1043 tristate "Winbond Super I/O GPIO support"
1046 This option enables support for GPIOs found on Winbond Super I/O
1048 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1051 You will need to provide a module parameter "gpios", or a
1052 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1053 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1055 To compile this driver as a module, choose M here: the module will
1056 be called gpio-winbond.
1059 tristate "WinSystems WS16C48 GPIO support"
1063 select GPIOLIB_IRQCHIP
1066 Enables GPIO support for the WinSystems WS16C48. The base port
1067 addresses for the devices may be configured via the base module
1068 parameter. The interrupt line numbers for the devices may be
1069 configured via the irq module parameter.
1073 menu "I2C GPIO expanders"
1077 tristate "Avionic Design N-bit GPIO expander"
1079 select GPIOLIB_IRQCHIP
1081 This option enables support for N GPIOs found on Avionic Design
1082 I2C GPIO expanders. The register space will be extended by powers
1083 of two, so the controller will need to accommodate for that. For
1084 example: if a controller provides 48 pins, 6 registers will be
1085 enough to represent all pins, but the driver will assume a
1086 register layout for 64 pins (8 registers).
1089 tristate "FXL6408 I2C GPIO expander"
1093 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1095 To compile this driver as a module, choose M here: the module will
1096 be called gpio-fxl6408.
1099 tristate "DS4520 I2C GPIO expander"
1103 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1104 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1106 To compile this driver as a module, choose M here: the module will
1107 be called gpio-ds4520.
1110 tristate "Gateworks PLD GPIO Expander"
1113 Say yes here to provide access to the Gateworks I2C PLD GPIO
1114 Expander. This is used at least on the Cambria GW2358-4.
1117 tristate "Maxim MAX7300 GPIO expander"
1120 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1123 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1125 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1126 Port Expanders. Each IO port on these chips has a fixed role of
1127 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1128 Input and Output (designed by 'P'). The combinations are listed
1131 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1132 max7322 (4I4O), max7323 (4P4O)
1134 16 bits: max7324 (8I8O), max7325 (8P8O),
1135 max7326 (4I12O), max7327 (4P12O)
1137 Board setup code must specify the model to use, and the start
1138 number for these GPIOs.
1140 config GPIO_MAX732X_IRQ
1141 bool "Interrupt controller support for MAX732x"
1142 depends on GPIO_MAX732X=y
1143 select GPIOLIB_IRQCHIP
1145 Say yes here to enable the max732x to be used as an interrupt
1146 controller. It requires the driver to be built in the kernel.
1149 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1152 Say yes here to provide access to several register-oriented
1153 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1156 4 bits: pca9536, pca9537
1158 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1159 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1161 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1166 40 bits: pca9505, pca9698
1168 config GPIO_PCA953X_IRQ
1169 bool "Interrupt controller support for PCA953x"
1170 depends on GPIO_PCA953X
1171 select GPIOLIB_IRQCHIP
1173 Say yes here to enable the pca953x to be used as an interrupt
1177 tristate "PCA9570 4-Bit I2C GPO expander"
1179 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1181 To compile this driver as a module, choose M here: the module will
1182 be called gpio-pca9570.
1185 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1186 select GPIOLIB_IRQCHIP
1189 Say yes here to provide access to most "quasi-bidirectional" I2C
1190 GPIO expanders used for additional digital outputs or inputs.
1191 Most of these parts are from NXP, though TI is a second source for
1192 some of them. Compatible models include:
1194 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1195 pca9670, pca9672, pca9674, pca9674a,
1198 16 bits: pcf8575, pcf8575c, pca8575,
1199 pca9671, pca9673, pca9675
1201 Your board setup code will need to declare the expanders in
1202 use, and assign numbers to the GPIOs they expose. Those GPIOs
1203 can then be used from drivers and other kernel code, just like
1204 other GPIOs, but only accessible from task contexts.
1206 This driver provides an in-kernel interface to those GPIOs using
1207 platform-neutral GPIO calls.
1209 config GPIO_TPIC2810
1210 tristate "TPIC2810 8-Bit I2C GPO expander"
1212 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1214 To compile this driver as a module, choose M here: the module will
1215 be called gpio-tpic2810.
1218 tristate "Technologic Systems FPGA I2C GPIO"
1219 depends on SOC_IMX6 || COMPILE_TEST
1222 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1223 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1227 menu "MFD GPIO expanders"
1230 tristate "GPIO Support for ADP5520 PMIC"
1231 depends on PMIC_ADP5520
1233 This option enables support for on-chip GPIO found
1234 on Analog Devices ADP5520 PMICs.
1236 config GPIO_ALTERA_A10SR
1237 tristate "Altera Arria10 System Resource GPIO"
1238 depends on MFD_ALTERA_A10SR
1240 Driver for Arria10 Development Kit GPIO expansion which
1241 includes reads of pushbuttons and DIP switches as well
1245 tristate "Wolfson Microelectronics Arizona class devices"
1246 depends on MFD_ARIZONA
1248 Support for GPIOs on Wolfson Arizona class devices.
1251 tristate "ROHM BD71815 PMIC GPIO support"
1252 depends on MFD_ROHM_BD71828
1254 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1255 available on the ROHM PMIC.
1257 This driver can also be built as a module. If so, the module
1258 will be called gpio-bd71815.
1261 tristate "ROHM BD71828 GPIO support"
1262 depends on MFD_ROHM_BD71828
1264 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1265 available on the ROHM PMIC in total. The GPIOs are limited to
1266 outputs only and pins must be configured to GPIO outputs by
1267 OTP. Enable this only if you want to use these pins as outputs.
1269 This driver can also be built as a module. If so, the module
1270 will be called gpio-bd71828.
1272 config GPIO_BD9571MWV
1273 tristate "ROHM BD9571 GPIO support"
1274 depends on MFD_BD9571MWV
1276 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1277 available on the ROHM PMIC in total, both of which can also
1278 generate interrupts.
1280 This driver can also be built as a module. If so, the module
1281 will be called gpio-bd9571mwv.
1284 tristate "ChromeOS EC GPIO support"
1287 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1288 cannot be set unless the system is unlocked.
1290 This driver can also be built as a module. If so, the module
1291 will be called gpio-cros-ec.
1293 config GPIO_CRYSTAL_COVE
1294 tristate "GPIO support for Crystal Cove PMIC"
1295 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1296 select GPIOLIB_IRQCHIP
1298 Support for GPIO pins on Crystal Cove PMIC.
1300 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1303 This driver can also be built as a module. If so, the module will be
1304 called gpio-crystalcove.
1307 tristate "AMD CS5535/CS5536 GPIO support"
1308 depends on X86 || MIPS || COMPILE_TEST
1309 depends on MFD_CS5535
1311 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1312 can be used for quite a number of things. The CS5535/6 is found on
1313 AMD Geode and Lemote Yeeloong devices.
1318 tristate "Dialog DA9052 GPIO"
1319 depends on PMIC_DA9052
1321 Say yes here to enable the GPIO driver for the DA9052 chip.
1324 tristate "Dialog Semiconductor DA9055 GPIO"
1325 depends on MFD_DA9055
1327 Say yes here to enable the GPIO driver for the DA9055 chip.
1329 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1330 be controlled by this driver.
1332 If driver is built as a module it will be called gpio-da9055.
1335 tristate "Diolan DLN2 GPIO support"
1337 select GPIOLIB_IRQCHIP
1340 Select this option to enable GPIO driver for the Diolan DLN2
1343 This driver can also be built as a module. If so, the module
1344 will be called gpio-dln2.
1347 bool "HTC EGPIO support"
1350 This driver supports the CPLD egpio chip present on
1351 several HTC phones. It provides basic support for input
1352 pins, output pins, and IRQs.
1354 config GPIO_ELKHARTLAKE
1355 tristate "Intel Elkhart Lake PSE GPIO support"
1356 depends on X86 || COMPILE_TEST
1359 Select this option to enable GPIO support for Intel Elkhart Lake
1362 To compile this driver as a module, choose M here: the module will
1363 be called gpio-elkhartlake.
1365 config GPIO_JANZ_TTL
1366 tristate "Janz VMOD-TTL Digital IO Module"
1367 depends on MFD_JANZ_CMODIO
1369 This enables support for the Janz VMOD-TTL Digital IO module.
1370 This driver provides support for driving the pins in output
1371 mode only. Input mode is not supported.
1374 tristate "Kontron ETX / COMexpress GPIO"
1375 depends on MFD_KEMPLD
1377 This enables support for the PLD GPIO interface on some Kontron ETX
1378 and COMexpress (ETXexpress) modules.
1380 This driver can also be built as a module. If so, the module will be
1384 tristate "INTEL La Jolla Cove Adapter GPIO support"
1386 select GPIOLIB_IRQCHIP
1389 Select this option to enable GPIO driver for the INTEL
1390 La Jolla Cove Adapter (LJCA) board.
1392 This driver can also be built as a module. If so, the module
1393 will be called gpio-ljca.
1396 tristate "TI/National Semiconductor LP3943 GPIO expander"
1397 depends on MFD_LP3943
1399 GPIO driver for LP3943 MFD.
1400 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1401 Open drain outputs are required for this usage.
1404 tristate "TI LP873X GPO"
1405 depends on MFD_TI_LP873X
1407 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1410 This driver can also be built as a module. If so, the module will be
1414 tristate "TI LP87565 GPIO"
1415 depends on MFD_TI_LP87565
1417 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1420 This driver can also be built as a module. If so, the module will be
1421 called gpio-lp87565.
1424 tristate "Cirrus Logic Madera class codecs"
1425 depends on PINCTRL_MADERA
1427 Support for GPIOs on Cirrus Logic Madera class codecs.
1429 config GPIO_MAX77620
1430 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1431 depends on MFD_MAX77620
1432 select GPIOLIB_IRQCHIP
1434 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1435 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1436 driver also provides interrupt support for each of the GPIOs.
1437 Say yes here to enable the max77620 to be used as GPIO controller.
1439 config GPIO_MAX77650
1440 tristate "Maxim MAX77650/77651 GPIO support"
1441 depends on MFD_MAX77650
1443 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1444 These chips have a single pin that can be configured as GPIO.
1447 bool "TI PALMAS series PMICs GPIO"
1448 depends on MFD_PALMAS
1450 Select this option to enable GPIO driver for the TI PALMAS
1453 config GPIO_PMIC_EIC_SPRD
1454 tristate "Spreadtrum PMIC EIC support"
1455 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1457 select GPIOLIB_IRQCHIP
1459 Say yes here to support Spreadtrum PMIC EIC device.
1462 bool "RICOH RC5T583 GPIO"
1463 depends on MFD_RC5T583
1465 Select this option to enable GPIO driver for the Ricoh RC5T583
1467 This driver provides the support for driving/reading the GPIO pins
1468 of RC5T583 device through standard GPIO library.
1470 config GPIO_SL28CPLD
1471 tristate "Kontron sl28cpld GPIO support"
1472 depends on MFD_SL28CPLD || COMPILE_TEST
1474 select GPIOLIB_IRQCHIP
1477 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1479 This driver can also be built as a module. If so, the module will be
1480 called gpio-sl28cpld.
1484 depends on MFD_STMPE
1486 select GPIOLIB_IRQCHIP
1488 This enables support for the GPIOs found on the STMPE I/O
1492 bool "TC3589X GPIOs"
1493 depends on MFD_TC3589X
1495 select GPIOLIB_IRQCHIP
1497 This enables support for the GPIOs found on the TC3589X
1500 config GPIO_TIMBERDALE
1501 bool "Support for timberdale GPIO IP"
1502 depends on MFD_TIMBERDALE
1504 Add support for the GPIO IP in the timberdale FPGA.
1506 config GPIO_TN48M_CPLD
1507 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1508 depends on MFD_TN48M_CPLD
1511 This enables support for the GPIOs found on the Delta
1512 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1513 they are input-only or output-only type.
1515 This driver can also be built as a module. If so, the
1516 module will be called gpio-tn48m.
1518 config GPIO_TPS65086
1519 tristate "TI TPS65086 GPO"
1520 depends on MFD_TPS65086
1522 This driver supports the GPO on TI TPS65086x PMICs.
1524 config GPIO_TPS65218
1525 tristate "TPS65218 GPIO"
1526 depends on MFD_TPS65218
1528 Select this option to enable GPIO driver for the TPS65218
1531 config GPIO_TPS65219
1532 tristate "TPS65219 GPIO"
1533 depends on MFD_TPS65219
1534 default MFD_TPS65219
1536 Select this option to enable GPIO driver for the TPS65219 chip
1538 GPIO0 is statically configured as either input or output prior to
1539 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1540 is statically configured by NVM. GPIO0 can't be used as a generic
1541 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1544 This driver can also be built as a module. If so, the module will be
1545 called gpio_tps65219.
1547 config GPIO_TPS6586X
1548 bool "TPS6586X GPIO"
1549 depends on MFD_TPS6586X
1551 Select this option to enable GPIO driver for the TPS6586X
1554 config GPIO_TPS65910
1555 bool "TPS65910 GPIO"
1556 depends on MFD_TPS65910
1558 Select this option to enable GPIO driver for the TPS65910
1561 config GPIO_TPS65912
1562 tristate "TI TPS65912 GPIO"
1563 depends on MFD_TPS65912
1565 This driver supports TPS65912 GPIO chip.
1567 config GPIO_TPS68470
1568 tristate "TPS68470 GPIO"
1569 depends on INTEL_SKL_INT3472
1571 Select this option to enable GPIO driver for the TPS68470
1573 There are 7 GPIOs and few sensor-related GPIOs supported
1574 by the TPS68470. While the 7 GPIOs can be configured as
1575 input or output as appropriate, the sensor related GPIOs
1576 are "output only" GPIOs.
1579 tristate "TQ-Systems QTMX86 GPIO"
1580 depends on MFD_TQMX86 || COMPILE_TEST
1581 depends on HAS_IOPORT_MAP
1582 select GPIOLIB_IRQCHIP
1584 This driver supports GPIO on the TQMX86 IO controller.
1587 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1588 depends on TWL4030_CORE
1590 Say yes here to access the GPIO signals of various multi-function
1591 power management chips from Texas Instruments.
1594 tristate "TWL6040 GPO"
1595 depends on TWL6040_CORE
1597 Say yes here to access the GPO signals of twl6040
1598 audio chip from Texas Instruments.
1600 config GPIO_WHISKEY_COVE
1601 tristate "GPIO support for Whiskey Cove PMIC"
1602 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1603 select GPIOLIB_IRQCHIP
1605 Support for GPIO pins on Whiskey Cove PMIC.
1607 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1610 This driver can also be built as a module. If so, the module will be
1614 tristate "WM831x GPIOs"
1615 depends on MFD_WM831X
1617 Say yes here to access the GPIO signals of WM831x power management
1618 chips from Wolfson Microelectronics.
1621 tristate "WM8350 GPIOs"
1622 depends on MFD_WM8350
1624 Say yes here to access the GPIO signals of WM8350 power management
1625 chips from Wolfson Microelectronics.
1628 tristate "WM8994 GPIOs"
1629 depends on MFD_WM8994
1631 Say yes here to access the GPIO signals of WM8994 audio hub
1632 CODECs from Wolfson Microelectronics.
1636 menu "PCI GPIO expanders"
1640 tristate "AMD 8111 GPIO driver"
1641 depends on X86 || COMPILE_TEST
1642 depends on HAS_IOPORT_MAP
1644 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1646 Note that usually system firmware/ACPI handles GPIO pins on their
1647 own and users might easily break their systems with uncareful usage
1653 tristate "BT8XX GPIO abuser"
1654 depends on VIDEO_BT848=n
1656 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1657 as a cheap PCI GPIO card.
1659 This chip can be found on Miro, Hauppauge and STB TV-cards.
1661 The card needs to be physically altered for using it as a
1662 GPIO card. For more information on how to build a GPIO card
1663 from a BT8xx TV card, see the documentation file at
1664 Documentation/driver-api/gpio/bt8xxgpio.rst
1668 config GPIO_MERRIFIELD
1669 tristate "Intel Merrifield GPIO support"
1670 depends on X86_INTEL_MID
1673 Say Y here to support Intel Merrifield GPIO.
1676 tristate "Mellanox BlueField SoC GPIO"
1677 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1680 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1683 tristate "Mellanox BlueField 2 SoC GPIO"
1684 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1686 select GPIOLIB_IRQCHIP
1688 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1691 tristate "Mellanox BlueField 3 SoC GPIO"
1692 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1694 select GPIOLIB_IRQCHIP
1696 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1697 This GPIO controller supports interrupt handling and enables the
1698 manipulation of certain GPIO pins.
1699 This controller should be used in parallel with pinctrl-mlxbf3 to
1700 control the desired GPIOs.
1701 This driver can also be built as a module called mlxbf3-gpio.
1704 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1705 depends on X86 || COMPILE_TEST
1706 select GENERIC_IRQ_CHIP
1708 ML7213 is companion chip for Intel Atom E6xx series.
1709 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1710 Hub) which is for IVI (In-Vehicle Infotainment) use.
1711 This driver can access the IOH's GPIO device.
1714 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1715 depends on X86_32 || MIPS || COMPILE_TEST
1716 select GENERIC_IRQ_CHIP
1718 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1719 which is an IOH (Input/Output Hub) for x86 embedded processor.
1720 This driver can access PCH GPIO device.
1722 This driver also can be used for LAPIS Semiconductor IOH (Input/
1723 Output Hub), ML7223 and ML7831.
1724 ML7223 IOH is for MP (Media Phone) use.
1725 ML7831 IOH is for general purpose use.
1726 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1727 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1729 config GPIO_PCI_IDIO_16
1730 tristate "ACCES PCI-IDIO-16 GPIO support"
1734 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1735 generated when any of the inputs change state (low to high or high to
1736 low). Input filter control is not supported by this driver, and the
1737 input filters are deactivated by this driver.
1739 config GPIO_PCIE_IDIO_24
1740 tristate "ACCES PCIe-IDIO-24 GPIO support"
1743 select GPIOLIB_IRQCHIP
1746 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1747 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1748 when any of the inputs change state (low to high or high to low).
1749 Input filter control is not supported by this driver, and the input
1750 filters are deactivated by this driver.
1753 tristate "RDC R-321x GPIO support"
1757 Support for the RDC R321x SoC GPIOs over southbridge
1758 PCI configuration space.
1760 config GPIO_SODAVILLE
1761 bool "Intel Sodaville GPIO support"
1762 depends on X86 && OF
1764 select GENERIC_IRQ_CHIP
1766 Say Y here to support Intel Sodaville GPIO.
1770 menu "SPI GPIO expanders"
1771 depends on SPI_MASTER
1774 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1777 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1778 shift registers. This driver can be used to provide access
1779 to more GPIO outputs.
1781 config GPIO_MAX3191X
1782 tristate "Maxim MAX3191x industrial serializer"
1785 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1786 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1787 chip to make 8 digital 24V inputs available via SPI. Supports
1788 CRC checksums to guard against electromagnetic interference,
1789 as well as undervoltage and overtemperature detection.
1792 tristate "Maxim MAX7301 GPIO expander"
1795 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1798 tristate "Freescale MC33880 high-side/low-side switch"
1800 SPI driver for Freescale MC33880 high-side/low-side switch.
1801 This provides GPIO interface supporting inputs and outputs.
1804 tristate "Generic parallel-in/serial-out shift register"
1806 GPIO driver for SPI compatible parallel-in/serial-out shift
1807 registers. These are input only devices.
1810 tristate "EXAR XRA1403 16-bit GPIO expander"
1813 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1816 tristate "Turris Mox Moxtet bus GPIO expander"
1819 Say yes here if you are building for the Turris Mox router.
1820 This is the driver needed for configuring the GPIOs via the Moxtet
1821 bus. For example the Mox module with SFP cage needs this driver
1822 so that phylink can use corresponding GPIOs.
1826 menu "USB GPIO expanders"
1829 config GPIO_VIPERBOARD
1830 tristate "Viperboard GPIO a & b support"
1831 depends on MFD_VIPERBOARD
1833 Say yes here to access the GPIO signals of Nano River
1834 Technologies Viperboard. There are two GPIO chips on the
1835 board: gpioa and gpiob.
1836 See viperboard API specification and Nano
1837 River Tech's viperboard.h for detailed meaning
1838 of the module parameters.
1842 menu "Virtual GPIO drivers"
1844 config GPIO_AGGREGATOR
1845 tristate "GPIO Aggregator"
1847 Say yes here to enable the GPIO Aggregator, which provides a way to
1848 aggregate existing GPIO lines into a new virtual GPIO chip.
1849 This can serve the following purposes:
1850 - Assign permissions for a collection of GPIO lines to a user,
1851 - Export a collection of GPIO lines to a virtual machine,
1852 - Provide a generic driver for a GPIO-operated device in an
1853 industrial control context, to be operated from userspace using
1854 the GPIO chardev interface.
1857 tristate "GPIO latch driver"
1859 Say yes here to enable a driver for GPIO multiplexers based on latches
1860 connected to other GPIOs.
1863 tristate "GPIO Testing Driver (DEPRECATED)"
1866 This module is DEPRECATED. Please consider using gpio-sim instead.
1868 This enables GPIO Testing driver, which provides a way to test GPIO
1869 subsystem through sysfs (or char device) and debugfs.
1870 User could use it through the script in
1871 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1875 tristate "VirtIO GPIO support"
1877 select GPIOLIB_IRQCHIP
1879 Say Y here to enable guest support for virtio-based GPIO controllers.
1881 These virtual GPIOs can be routed to real GPIOs or attached to
1882 simulators on the host (like QEMU).
1885 tristate "GPIO Simulator Module"
1889 This enables the GPIO simulator - a configfs-based GPIO testing