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.
73 bool "Character device (/dev/gpiochipN) support" if EXPERT
76 Say Y here to add the character device /dev/gpiochipN interface
77 for GPIOs. The character device allows userspace to control GPIOs
78 using ioctl() operations.
80 Only say N if you are sure that the GPIO character device is not
86 bool "Support GPIO ABI Version 1"
90 Say Y here to support version 1 of the GPIO CDEV ABI.
92 This ABI version is deprecated.
93 Please use the latest ABI for new developments.
98 depends on HAS_IOMEM # Only for IOMEM drivers
105 config GPIO_SWNODE_UNDEFINED
108 This adds a special place holder for software nodes to contain an
109 undefined GPIO reference, this is primarily used by SPI to allow a
110 list of GPIO chip selects to mark a certain chip select as being
111 controlled the SPI device's internal chip select mechanism and not
114 # put drivers in the right section, in alphabetical order
116 # This symbol is selected by both I2C and SPI expanders
123 select GPIOLIB_IRQCHIP
126 Enables support for the idio-16 library functions. The idio-16 library
127 provides functions to facilitate communication with devices within the
128 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
130 If built as a module its name will be gpio-idio-16.
132 menu "Memory mapped GPIO drivers"
135 config GPIO_74XX_MMIO
136 tristate "GPIO driver for 74xx-ICs with MMIO access"
140 Say yes here to support GPIO functionality for 74xx-compatible ICs
141 with MMIO access. Compatible models include:
142 1 bit: 741G125 (Input), 741G74 (Output)
143 2 bits: 742G125 (Input), 7474 (Output)
144 4 bits: 74125 (Input), 74175 (Output)
145 6 bits: 74365 (Input), 74174 (Output)
146 8 bits: 74244 (Input), 74273 (Output)
147 16 bits: 741624 (Input), 7416374 (Output)
150 tristate "Altera GPIO"
151 select GPIOLIB_IRQCHIP
153 Say Y or M here to build support for the Altera PIO device.
155 If driver is built as a module it will be called gpio-altera.
158 tristate "AMD Promontory GPIO support"
162 Driver for GPIO functionality on Promontory IOHub.
163 Requires ACPI ASL code to enumerate as a platform device.
166 tristate "Aspeed GPIO support"
167 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
168 select GPIOLIB_IRQCHIP
170 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
172 config GPIO_ASPEED_SGPIO
173 bool "Aspeed SGPIO support"
174 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
176 select GPIOLIB_IRQCHIP
178 Say Y here to support Aspeed AST2500 SGPIO functionality.
181 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
183 depends on ATH79 || COMPILE_TEST
185 select GPIOLIB_IRQCHIP
187 Select this option to enable GPIO driver for
188 Atheros AR71XX/AR724X/AR913X SoC devices.
190 config GPIO_RASPBERRYPI_EXP
191 tristate "Raspberry Pi 3 GPIO Expander"
192 default RASPBERRYPI_FIRMWARE
194 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
195 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
196 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
198 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
199 the firmware mailbox to communicate with VideoCore on BCM283x chips.
202 bool "Broadcom Kona GPIO"
203 depends on ARCH_BCM_MOBILE || COMPILE_TEST
205 Turn on GPIO support for Broadcom "Kona" chips.
207 config GPIO_BCM_XGS_IPROC
208 tristate "BRCM XGS iProc GPIO support"
209 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
211 select GPIOLIB_IRQCHIP
212 default ARCH_BCM_IPROC
214 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
217 tristate "BRCMSTB GPIO support"
218 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
219 depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST)
223 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
226 tristate "Cadence GPIO support"
229 select GPIOLIB_IRQCHIP
231 Say yes here to enable support for Cadence GPIO controller.
234 tristate "CLPS711X GPIO support"
235 depends on ARCH_CLPS711X || COMPILE_TEST
238 Say yes here to support GPIO on CLPS711X SoCs.
241 tristate "TI Davinci/Keystone GPIO support"
242 default y if ARCH_DAVINCI
243 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
245 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
248 tristate "Synopsys DesignWare APB GPIO driver"
250 select GPIOLIB_IRQCHIP
252 Say Y or M here to build support for the Synopsys DesignWare APB
256 tristate "Spreadtrum EIC support"
257 depends on ARCH_SPRD || COMPILE_TEST
259 select GPIOLIB_IRQCHIP
261 Say yes here to support Spreadtrum EIC device.
264 tristate "Emma Mobile GPIO"
265 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
267 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
270 tristate "Airoha GPIO support"
271 depends on ARCH_AIROHA
274 select GPIOLIB_IRQCHIP
276 Say Y or M here to support the GPIO controller block on the
277 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
281 depends on ARCH_EP93XX
283 select GPIOLIB_IRQCHIP
286 tristate "Support for GPIO pins on XR17V352/354/358"
287 depends on SERIAL_8250_EXAR
290 Selecting this option will enable handling of GPIO pins present
291 on Exar XR17V352/354/358 chips.
294 bool "GE FPGA based GPIO"
295 depends on GE_FPGA || COMPILE_TEST
298 Support for common GPIO functionality provided on some GE Single Board
301 This driver provides basic support (configure as input or output, read
302 and write pin state) for GPIO implemented in a number of GE single
305 config GPIO_FTGPIO010
306 bool "Faraday FTGPIO010 GPIO"
309 select GPIOLIB_IRQCHIP
310 default (ARCH_GEMINI || ARCH_MOXART)
312 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
313 Cortina systems Gemini platforms, Moxa ART and others.
315 config GPIO_GENERIC_PLATFORM
316 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
319 Say yes here to support basic platform_device memory-mapped GPIO controllers.
321 config GPIO_GRANITERAPIDS
322 tristate "Intel Granite Rapids-D vGPIO support"
323 depends on X86 || COMPILE_TEST
324 select GPIOLIB_IRQCHIP
326 Select this to enable virtual GPIO support on platforms with the
329 - Intel Granite Rapids-D
331 The driver enables basic GPIO functionality and implements interrupt
332 support. The virtual GPIO driver controls GPIO lines via a firmware
333 interface. The physical GPIO pins reside on device that is external
334 from the main SoC package, such as a BMC or a CPLD.
336 To compile this driver as a module, choose M here: the module will
337 be called gpio-graniterapids.
340 tristate "Aeroflex Gaisler GRGPIO support"
344 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
345 VHDL IP core library.
348 tristate "HiSilicon GPIO controller driver"
349 depends on ARM64 || COMPILE_TEST
351 select GPIOLIB_IRQCHIP
353 Say Y or M here to build support for the HiSilicon GPIO controller
355 This GPIO controller supports double-edge interrupt and multi-core
359 tristate "Nintendo Wii (Hollywood) GPIO"
362 select GPIOLIB_IRQCHIP
364 Select this to support the GPIO controller of the Nintendo Wii.
369 tristate "Intel ICH GPIO"
373 Say yes here to support the GPIO functionality of a number of Intel
374 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
375 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
376 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
385 bool "Intel IXP4xx GPIO"
386 depends on ARCH_IXP4XX
389 select GPIOLIB_IRQCHIP
390 select IRQ_DOMAIN_HIERARCHY
392 Say yes here to support the GPIO functionality of a number of Intel
393 IXP4xx series of chips.
398 tristate "Xylon LogiCVC GPIO support"
399 depends on MFD_SYSCON && OF
401 Say yes here to support GPIO functionality of the Xylon LogiCVC
402 programmable logic block.
405 bool "Loongson-2/3 GPIO support"
406 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
408 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
410 config GPIO_LOONGSON_64BIT
411 tristate "Loongson 64 bit GPIO support"
412 depends on LOONGARCH || COMPILE_TEST
416 Say yes here to support the GPIO functionality of a number of
417 Loongson series of chips. The Loongson GPIO controller supports
418 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
419 the remaining 56 are reused with other functions, with edge or
420 level triggered interrupts.
423 tristate "NXP LPC18XX/43XX GPIO support"
424 default y if ARCH_LPC18XX
425 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
426 select IRQ_DOMAIN_HIERARCHY
428 Select this option to enable GPIO driver for
429 NXP LPC18XX/43XX devices.
432 tristate "NXP LPC32XX GPIO support"
433 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
435 Select this option to enable GPIO driver for
439 tristate "GPIO support for Fujitsu MB86S7x Platforms"
441 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
444 tristate "MEN 16Z127 GPIO support"
448 Say yes here to support the MEN 16Z127 GPIO Controller.
450 config GPIO_MM_LANTIQ
451 bool "Lantiq Memory mapped GPIOs"
452 depends on LANTIQ && SOC_XWAY
453 select OF_GPIO_MM_GPIOCHIP
455 This enables support for memory mapped GPIOs on the External Bus Unit
456 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
457 created by attaching a 16-bit latch to the bus.
461 depends on PPC_MPC52xx
462 select OF_GPIO_MM_GPIOCHIP
465 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
466 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
467 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
472 Say Y here if you're going to use hardware that connects to the
473 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
476 bool "Mediatek MT7621 GPIO Support"
477 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
480 select GPIOLIB_IRQCHIP
482 Say yes here to support the Mediatek MT7621 SoC GPIO device.
485 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
486 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
487 default PLAT_ORION || ARCH_MVEBU
488 select GENERIC_IRQ_CHIP
492 tristate "i.MX GPIO support"
493 depends on ARCH_MXC || COMPILE_TEST
495 select GENERIC_IRQ_CHIP
498 bool "Freescale MXS GPIO support" if COMPILE_TEST
499 depends on ARCH_MXS || COMPILE_TEST
500 default y if ARCH_MXS
502 select GENERIC_IRQ_CHIP
505 bool "Nomadik GPIO driver"
506 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
507 select GPIOLIB_IRQCHIP
509 Say yes here to support the Nomadik SoC GPIO block. This block is also
510 used by the Mobileye EyeQ5 SoC.
512 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
513 It is deeply interconnected with the associated pinctrl driver as GPIO
514 registers handle muxing ("alternate functions") as well.
516 config GPIO_NPCM_SGPIO
517 bool "Nuvoton SGPIO support"
518 depends on ARCH_NPCM || COMPILE_TEST
519 select GPIOLIB_IRQCHIP
521 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
524 tristate "Cavium OCTEON GPIO"
525 depends on CAVIUM_OCTEON_SOC
528 Say yes here to support the on-chip GPIO lines on the OCTEON
532 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
533 default y if ARCH_OMAP
535 select GENERIC_IRQ_CHIP
536 select GPIOLIB_IRQCHIP
538 Say yes here to enable GPIO support for TI OMAP SoCs.
541 tristate "PrimeCell PL061 GPIO support"
544 select GPIOLIB_IRQCHIP
546 Say yes here to support the PrimeCell PL061 GPIO device.
548 config GPIO_POLARFIRE_SOC
549 bool "Microchip FPGA GPIO support"
552 Say yes here to support the GPIO controllers on Microchip FPGAs.
555 bool "PXA GPIO support"
556 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
558 Say yes here to support the PXA GPIO device.
561 tristate "Renesas R-Car and RZ/G GPIO support"
562 depends on ARCH_RENESAS || COMPILE_TEST
563 select GPIOLIB_IRQCHIP
565 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
568 bool "RDA Micro GPIO controller support"
569 depends on ARCH_RDA || COMPILE_TEST
572 select GPIOLIB_IRQCHIP
574 Say Y here to support RDA Micro GPIO controller.
576 config GPIO_REALTEK_OTTO
577 tristate "Realtek Otto GPIO support"
578 depends on MACH_REALTEK_RTL
579 default MACH_REALTEK_RTL
581 select GPIOLIB_IRQCHIP
583 The GPIO controller on the Otto MIPS platform supports up to two
584 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
585 are grouped in four 8-bit wide ports.
587 When built as a module, the module will be called realtek_otto_gpio.
592 A 32-bit single register GPIO fixed in/out implementation. This
593 can be used to represent any register as a set of GPIO signals.
596 tristate "Rockchip GPIO support"
597 depends on ARCH_ROCKCHIP || COMPILE_TEST
598 select GENERIC_IRQ_CHIP
599 select GPIOLIB_IRQCHIP
600 default ARCH_ROCKCHIP
602 Say yes here to support GPIO on Rockchip SoCs.
605 tristate "Realtek DHC GPIO support"
606 depends on ARCH_REALTEK
608 select GPIOLIB_IRQCHIP
610 This option enables support for GPIOs found on Realtek DHC(Digital
611 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
612 RTD1319D, RTD1395, RTD1619 and RTD1619B.
614 Say yes here to support GPIO functionality and GPIO interrupt on
617 config GPIO_SAMA5D2_PIOBU
618 tristate "SAMA5D2 PIOBU GPIO support"
619 depends on MFD_SYSCON
621 depends on ARCH_AT91 || COMPILE_TEST
624 Say yes here to use the PIOBU pins as GPIOs.
626 PIOBU pins on the SAMA5D2 can be used as GPIOs.
627 The difference from regular GPIOs is that they
628 maintain their value during backup/self-refresh.
631 tristate "SiFive GPIO support"
633 select IRQ_DOMAIN_HIERARCHY
635 select GPIOLIB_IRQCHIP
638 Say yes here to support the GPIO device on SiFive SoCs.
641 tristate "SIOX GPIO support"
643 select GPIOLIB_IRQCHIP
645 Say yes here to support SIOX I/O devices. These are units connected
646 via a SIOX bus and have a number of fixed-direction I/O lines.
648 config GPIO_SNPS_CREG
649 bool "Synopsys GPIO via CREG (Control REGisters) driver"
650 depends on ARC || COMPILE_TEST
653 This driver supports GPIOs via CREG on various Synopsys SoCs.
654 This is a single-register MMIO GPIO driver for complex cases
655 where only several fields in register belong to GPIO lines and
656 each GPIO line owns a field with different length and on/off value.
658 config GPIO_SPEAR_SPICS
659 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
660 depends on PLAT_SPEAR
661 select GENERIC_IRQ_CHIP
663 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
666 tristate "Spreadtrum GPIO support"
667 depends on ARCH_SPRD || COMPILE_TEST
669 select GPIOLIB_IRQCHIP
671 Say yes here to support Spreadtrum GPIO device.
674 bool "XWAY STP GPIOs"
675 depends on SOC_XWAY || COMPILE_TEST
678 This enables support for the Serial To Parallel (STP) unit found on
679 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
680 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
681 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
685 tristate "GPIO based on SYSCON"
686 depends on MFD_SYSCON && OF
688 Say yes here to support GPIO functionality though SYSCON driver.
692 select GPIOLIB_IRQCHIP
694 GPIO support for Intel Tangier and compatible platforms.
699 If built as a module its name will be gpio-tangier.
704 select GENERIC_IRQ_CHIP
708 tristate "NVIDIA Tegra GPIO support"
710 depends on ARCH_TEGRA || COMPILE_TEST
712 select GPIOLIB_IRQCHIP
713 select IRQ_DOMAIN_HIERARCHY
715 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
718 tristate "NVIDIA Tegra186 GPIO support"
719 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
720 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
722 select GPIOLIB_IRQCHIP
723 select IRQ_DOMAIN_HIERARCHY
725 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
728 tristate "TS-4800 DIO blocks and compatibles"
730 depends on SOC_IMX51 || COMPILE_TEST
733 This driver support TS-4800 FPGA GPIO controllers.
736 tristate "Cavium ThunderX/OCTEON-TX GPIO"
737 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
739 select GPIOLIB_IRQCHIP
740 select IRQ_DOMAIN_HIERARCHY
741 select IRQ_FASTEOI_HIERARCHY_HANDLERS
743 Say yes here to support the on-chip GPIO lines on the ThunderX
744 and OCTEON-TX families of SoCs.
747 tristate "UniPhier GPIO support"
748 depends on ARCH_UNIPHIER || COMPILE_TEST
750 select IRQ_DOMAIN_HIERARCHY
752 Say yes here to support UniPhier GPIOs.
755 bool "VF610 GPIO support"
756 default y if SOC_VF610
757 depends on ARCH_MXC || COMPILE_TEST
758 select GPIOLIB_IRQCHIP
760 Say yes here to support i.MX or Vybrid vf610 GPIOs.
763 tristate "Toshiba Visconti GPIO support"
764 depends on ARCH_VISCONTI || COMPILE_TEST
766 select GPIOLIB_IRQCHIP
768 select IRQ_DOMAIN_HIERARCHY
770 Say yes here to support GPIO on Tohisba Visconti.
773 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
774 depends on MFD_WCD934X && OF_GPIO
776 This driver is to support GPIO block found on the Qualcomm Technologies
777 Inc WCD9340/WCD9341 Audio Codec.
780 bool "APM X-Gene GPIO controller support"
781 depends on ARM64 && OF_GPIO
783 This driver is to support the GPIO block within the APM X-Gene SoC
784 platform's generic flash controller. The GPIO pins are muxed with
785 the generic flash controller's address and data pins. Say yes
786 here to enable the GFC GPIO functionality.
789 tristate "APM X-Gene GPIO standby controller support"
790 depends on (ARCH_XGENE || COMPILE_TEST)
792 select GPIOLIB_IRQCHIP
793 select IRQ_DOMAIN_HIERARCHY
795 This driver supports the GPIO block within the APM X-Gene
796 Standby Domain. Say yes here to enable the GPIO functionality.
799 tristate "Xilinx GPIO support"
800 select GPIOLIB_IRQCHIP
802 Say yes here to support the Xilinx FPGA GPIO device.
805 tristate "Cavium ThunderX2 GPIO support"
806 depends on ARCH_THUNDER2 || COMPILE_TEST
807 select GPIOLIB_IRQCHIP
809 This driver provides support for GPIO interface on Cavium's ThunderX2
810 CN99XX SoCs (Originally from Netlogic XLP).
815 bool "Xtensa GPIO32 support"
817 depends on HAVE_XTENSA_GPIO32
820 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
821 and EXPSTATE (output) ports.
824 bool "LSI ZEVIO SoC memory mapped GPIOs"
827 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
830 tristate "Xilinx Zynq GPIO support"
831 depends on ARCH_ZYNQ || ARCH_ZYNQMP
832 select GPIOLIB_IRQCHIP
834 Say yes here to support Xilinx Zynq GPIO controller.
836 config GPIO_ZYNQMP_MODEPIN
837 tristate "ZynqMP ps-mode pin GPIO configuration driver"
838 depends on ZYNQMP_FIRMWARE
839 default ZYNQMP_FIRMWARE
841 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
844 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
845 is 4-bits boot mode pins. It sets and gets the status of
846 the ps-mode pin. Every pin can be configured as input/output.
848 config GPIO_LOONGSON1
849 tristate "Loongson1 GPIO support"
850 depends on MACH_LOONGSON32
853 Say Y or M here to support GPIO on Loongson1 SoCs.
856 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
858 This option enables driver for GPIO on AMD's Fusion Controller Hub,
859 as found on G-series SOCs (e.g. GX-412TC).
861 Note: This driver doesn't register itself automatically, as it
862 needs to be provided with platform-specific configuration.
863 (See e.g. CONFIG_PCENGINES_APU2.)
866 bool "MStar MSC313 GPIO support"
867 depends on ARCH_MSTARV7
869 select GPIOLIB_IRQCHIP
870 select IRQ_DOMAIN_HIERARCHY
872 Say Y here to support the main GPIO block on MStar/SigmaStar
876 tristate "IDT 79RC3243X GPIO support"
877 depends on MIKROTIK_RB532 || COMPILE_TEST
879 select GPIOLIB_IRQCHIP
881 Select this option to enable GPIO driver for
882 IDT 79RC3243X-based devices like Mikrotik RB532.
884 To compile this driver as a module, choose M here: the module will
885 be called gpio-idt3243x.
889 menu "Port-mapped I/O GPIO drivers"
890 depends on X86 && HAS_IOPORT # I/O space access
893 tristate "VIA VX855/VX875 GPIO"
898 Support access to the VX855/VX875 GPIO lines through the GPIO library.
900 This driver provides common support for accessing the device.
901 Additional drivers must be enabled in order to use the
902 functionality of the device.
908 Enables support for the i8255 interface library functions. The i8255
909 interface library provides functions to facilitate communication with
910 interfaces compatible with the venerable Intel 8255 Programmable
911 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
912 in the early 1970s but compatible interfaces are nowadays typically
913 found embedded in larger VLSI processing chips and FPGA components.
915 If built as a module its name will be gpio-i8255.
917 config GPIO_104_DIO_48E
918 tristate "ACCES 104-DIO-48E GPIO support"
923 select GPIOLIB_IRQCHIP
927 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
928 104-DIO-24E). The base port addresses for the devices may be
929 configured via the base module parameter. The interrupt line numbers
930 for the devices may be configured via the irq module parameter.
932 config GPIO_104_IDIO_16
933 tristate "ACCES 104-IDIO-16 GPIO support"
939 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
940 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
941 base port addresses for the devices may be configured via the base
942 module parameter. The interrupt line numbers for the devices may be
943 configured via the irq module parameter.
945 config GPIO_104_IDI_48
946 tristate "ACCES 104-IDI-48 GPIO support"
951 select GPIOLIB_IRQCHIP
954 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
955 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
956 the devices may be configured via the base module parameter. The
957 interrupt line numbers for the devices may be configured via the irq
961 tristate "Fintek and Nuvoton Super-I/O GPIO support"
963 This option enables support for GPIOs found on Fintek Super-I/O
964 chips F71869, F71869A, F71882FG, F71889F and F81866.
965 As well as Nuvoton Super-I/O chip NCT6126D.
967 To compile this driver as a module, choose M here: the module will
968 be called f7188x-gpio.
971 tristate "Diamond Systems GPIO-MM GPIO support"
977 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
979 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
980 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
981 support for these 48 channels of digital I/O.
983 The base port addresses for the devices may be configured via the base
984 array module parameter.
987 tristate "IT87xx GPIO support"
989 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
991 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
992 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
995 To compile this driver as a module, choose M here: the module will
999 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1000 depends on (X86 || COMPILE_TEST) && ACPI
1002 select GPIOLIB_IRQCHIP
1004 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1005 Intel Tunnel Creek processor, Intel Centerton processor or
1006 Intel Quark X1000 SoC.
1008 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1009 powered by the core power rail and are turned off during sleep
1010 modes (S3 and higher). The remaining four GPIOs are powered by
1011 the Intel SCH suspend power supply. These GPIOs remain
1012 active during S3. The suspend-powered GPIOs can be used to wake the
1013 system from the Suspend-to-RAM state.
1015 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1016 core power rail and 9 from suspend power supply.
1018 The Intel Centerton processor has a total of 30 GPIO pins.
1019 Twenty-one are powered by the core power rail and 9 from the
1020 suspend power supply.
1022 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1023 power well and 6 from the suspend power well.
1026 tristate "SMSC SCH311x SuperI/O GPIO"
1028 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1029 SCH3116 "Super I/O" chipsets.
1031 To compile this driver as a module, choose M here: the module will
1032 be called gpio-sch311x.
1035 tristate "TS-5500 DIO blocks and compatibles"
1036 depends on TS5500 || COMPILE_TEST
1038 This driver supports Digital I/O exposed by pin blocks found on some
1039 Technologic Systems platforms. It includes, but is not limited to, 3
1040 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1044 tristate "Winbond Super I/O GPIO support"
1047 This option enables support for GPIOs found on Winbond Super I/O
1049 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1052 You will need to provide a module parameter "gpios", or a
1053 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1054 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1056 To compile this driver as a module, choose M here: the module will
1057 be called gpio-winbond.
1060 tristate "WinSystems WS16C48 GPIO support"
1064 select GPIOLIB_IRQCHIP
1067 Enables GPIO support for the WinSystems WS16C48. The base port
1068 addresses for the devices may be configured via the base module
1069 parameter. The interrupt line numbers for the devices may be
1070 configured via the irq module parameter.
1074 menu "I2C GPIO expanders"
1078 tristate "Avionic Design N-bit GPIO expander"
1080 select GPIOLIB_IRQCHIP
1082 This option enables support for N GPIOs found on Avionic Design
1083 I2C GPIO expanders. The register space will be extended by powers
1084 of two, so the controller will need to accommodate for that. For
1085 example: if a controller provides 48 pins, 6 registers will be
1086 enough to represent all pins, but the driver will assume a
1087 register layout for 64 pins (8 registers).
1090 tristate "FXL6408 I2C GPIO expander"
1094 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1096 To compile this driver as a module, choose M here: the module will
1097 be called gpio-fxl6408.
1100 tristate "DS4520 I2C GPIO expander"
1104 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1105 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1107 To compile this driver as a module, choose M here: the module will
1108 be called gpio-ds4520.
1111 tristate "Gateworks PLD GPIO Expander"
1114 Say yes here to provide access to the Gateworks I2C PLD GPIO
1115 Expander. This is used at least on the Cambria GW2358-4.
1118 tristate "Maxim MAX7300 GPIO expander"
1121 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1124 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1126 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1127 Port Expanders. Each IO port on these chips has a fixed role of
1128 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1129 Input and Output (designed by 'P'). The combinations are listed
1132 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1133 max7322 (4I4O), max7323 (4P4O)
1135 16 bits: max7324 (8I8O), max7325 (8P8O),
1136 max7326 (4I12O), max7327 (4P12O)
1138 Board setup code must specify the model to use, and the start
1139 number for these GPIOs.
1141 config GPIO_MAX732X_IRQ
1142 bool "Interrupt controller support for MAX732x"
1143 depends on GPIO_MAX732X=y
1144 select GPIOLIB_IRQCHIP
1146 Say yes here to enable the max732x to be used as an interrupt
1147 controller. It requires the driver to be built in the kernel.
1150 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1153 Say yes here to provide access to several register-oriented
1154 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1157 4 bits: pca9536, pca9537
1159 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1160 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1162 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1167 40 bits: pca9505, pca9698
1169 config GPIO_PCA953X_IRQ
1170 bool "Interrupt controller support for PCA953x"
1171 depends on GPIO_PCA953X
1172 select GPIOLIB_IRQCHIP
1174 Say yes here to enable the pca953x to be used as an interrupt
1178 tristate "PCA9570 4-Bit I2C GPO expander"
1180 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1182 To compile this driver as a module, choose M here: the module will
1183 be called gpio-pca9570.
1186 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1187 select GPIOLIB_IRQCHIP
1190 Say yes here to provide access to most "quasi-bidirectional" I2C
1191 GPIO expanders used for additional digital outputs or inputs.
1192 Most of these parts are from NXP, though TI is a second source for
1193 some of them. Compatible models include:
1195 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1196 pca9670, pca9672, pca9674, pca9674a,
1199 16 bits: pcf8575, pcf8575c, pca8575,
1200 pca9671, pca9673, pca9675
1202 Your board setup code will need to declare the expanders in
1203 use, and assign numbers to the GPIOs they expose. Those GPIOs
1204 can then be used from drivers and other kernel code, just like
1205 other GPIOs, but only accessible from task contexts.
1207 This driver provides an in-kernel interface to those GPIOs using
1208 platform-neutral GPIO calls.
1210 config GPIO_TPIC2810
1211 tristate "TPIC2810 8-Bit I2C GPO expander"
1213 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1215 To compile this driver as a module, choose M here: the module will
1216 be called gpio-tpic2810.
1219 tristate "Technologic Systems FPGA I2C GPIO"
1220 depends on SOC_IMX6 || COMPILE_TEST
1223 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1224 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1228 menu "MFD GPIO expanders"
1231 tristate "GPIO Support for ADP5520 PMIC"
1232 depends on PMIC_ADP5520
1234 This option enables support for on-chip GPIO found
1235 on Analog Devices ADP5520 PMICs.
1238 tristate "GPIO Support for ADP5585"
1239 depends on MFD_ADP5585
1241 This option enables support for the GPIO function found in the Analog
1244 config GPIO_ALTERA_A10SR
1245 tristate "Altera Arria10 System Resource GPIO"
1246 depends on MFD_ALTERA_A10SR
1248 Driver for Arria10 Development Kit GPIO expansion which
1249 includes reads of pushbuttons and DIP switches as well
1253 tristate "Wolfson Microelectronics Arizona class devices"
1254 depends on MFD_ARIZONA
1256 Support for GPIOs on Wolfson Arizona class devices.
1259 tristate "ROHM BD71815 PMIC GPIO support"
1260 depends on MFD_ROHM_BD71828
1262 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1263 available on the ROHM PMIC.
1265 This driver can also be built as a module. If so, the module
1266 will be called gpio-bd71815.
1269 tristate "ROHM BD71828 GPIO support"
1270 depends on MFD_ROHM_BD71828
1272 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1273 available on the ROHM PMIC in total. The GPIOs are limited to
1274 outputs only and pins must be configured to GPIO outputs by
1275 OTP. Enable this only if you want to use these pins as outputs.
1277 This driver can also be built as a module. If so, the module
1278 will be called gpio-bd71828.
1280 config GPIO_BD9571MWV
1281 tristate "ROHM BD9571 GPIO support"
1282 depends on MFD_BD9571MWV
1284 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1285 available on the ROHM PMIC in total, both of which can also
1286 generate interrupts.
1288 This driver can also be built as a module. If so, the module
1289 will be called gpio-bd9571mwv.
1292 tristate "Congatec Board Controller GPIO support"
1295 Select this option to enable GPIO support for the Congatec Board
1298 This driver can also be built as a module. If so, the module will be
1302 tristate "ChromeOS EC GPIO support"
1305 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1306 cannot be set unless the system is unlocked.
1308 This driver can also be built as a module. If so, the module
1309 will be called gpio-cros-ec.
1311 config GPIO_CRYSTAL_COVE
1312 tristate "GPIO support for Crystal Cove PMIC"
1313 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1314 select GPIOLIB_IRQCHIP
1316 Support for GPIO pins on Crystal Cove PMIC.
1318 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1321 This driver can also be built as a module. If so, the module will be
1322 called gpio-crystalcove.
1325 tristate "AMD CS5535/CS5536 GPIO support"
1326 depends on X86 || MIPS || COMPILE_TEST
1327 depends on MFD_CS5535
1329 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1330 can be used for quite a number of things. The CS5535/6 is found on
1331 AMD Geode and Lemote Yeeloong devices.
1336 tristate "Dialog DA9052 GPIO"
1337 depends on PMIC_DA9052
1339 Say yes here to enable the GPIO driver for the DA9052 chip.
1342 tristate "Dialog Semiconductor DA9055 GPIO"
1343 depends on MFD_DA9055
1345 Say yes here to enable the GPIO driver for the DA9055 chip.
1347 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1348 be controlled by this driver.
1350 If driver is built as a module it will be called gpio-da9055.
1353 tristate "Diolan DLN2 GPIO support"
1355 select GPIOLIB_IRQCHIP
1358 Select this option to enable GPIO driver for the Diolan DLN2
1361 This driver can also be built as a module. If so, the module
1362 will be called gpio-dln2.
1365 bool "HTC EGPIO support"
1368 This driver supports the CPLD egpio chip present on
1369 several HTC phones. It provides basic support for input
1370 pins, output pins, and IRQs.
1372 config GPIO_ELKHARTLAKE
1373 tristate "Intel Elkhart Lake PSE GPIO support"
1374 depends on X86 || COMPILE_TEST
1377 Select this option to enable GPIO support for Intel Elkhart Lake
1380 To compile this driver as a module, choose M here: the module will
1381 be called gpio-elkhartlake.
1383 config GPIO_JANZ_TTL
1384 tristate "Janz VMOD-TTL Digital IO Module"
1385 depends on MFD_JANZ_CMODIO
1387 This enables support for the Janz VMOD-TTL Digital IO module.
1388 This driver provides support for driving the pins in output
1389 mode only. Input mode is not supported.
1392 tristate "Kontron ETX / COMexpress GPIO"
1393 depends on MFD_KEMPLD
1395 This enables support for the PLD GPIO interface on some Kontron ETX
1396 and COMexpress (ETXexpress) modules.
1398 This driver can also be built as a module. If so, the module will be
1402 tristate "INTEL La Jolla Cove Adapter GPIO support"
1404 select GPIOLIB_IRQCHIP
1407 Select this option to enable GPIO driver for the INTEL
1408 La Jolla Cove Adapter (LJCA) board.
1410 This driver can also be built as a module. If so, the module
1411 will be called gpio-ljca.
1414 tristate "TI/National Semiconductor LP3943 GPIO expander"
1415 depends on MFD_LP3943
1417 GPIO driver for LP3943 MFD.
1418 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1419 Open drain outputs are required for this usage.
1422 tristate "TI LP873X GPO"
1423 depends on MFD_TI_LP873X
1425 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1428 This driver can also be built as a module. If so, the module will be
1432 tristate "TI LP87565 GPIO"
1433 depends on MFD_TI_LP87565
1435 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1438 This driver can also be built as a module. If so, the module will be
1439 called gpio-lp87565.
1442 tristate "Cirrus Logic Madera class codecs"
1443 depends on PINCTRL_MADERA
1445 Support for GPIOs on Cirrus Logic Madera class codecs.
1447 config GPIO_MAX77620
1448 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1449 depends on MFD_MAX77620
1450 select GPIOLIB_IRQCHIP
1452 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1453 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1454 driver also provides interrupt support for each of the GPIOs.
1455 Say yes here to enable the max77620 to be used as GPIO controller.
1457 config GPIO_MAX77650
1458 tristate "Maxim MAX77650/77651 GPIO support"
1459 depends on MFD_MAX77650
1461 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1462 These chips have a single pin that can be configured as GPIO.
1465 bool "TI PALMAS series PMICs GPIO"
1466 depends on MFD_PALMAS
1468 Select this option to enable GPIO driver for the TI PALMAS
1471 config GPIO_PMIC_EIC_SPRD
1472 tristate "Spreadtrum PMIC EIC support"
1473 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1475 select GPIOLIB_IRQCHIP
1477 Say yes here to support Spreadtrum PMIC EIC device.
1480 bool "RICOH RC5T583 GPIO"
1481 depends on MFD_RC5T583
1483 Select this option to enable GPIO driver for the Ricoh RC5T583
1485 This driver provides the support for driving/reading the GPIO pins
1486 of RC5T583 device through standard GPIO library.
1488 config GPIO_SL28CPLD
1489 tristate "Kontron sl28cpld GPIO support"
1490 depends on MFD_SL28CPLD || COMPILE_TEST
1492 select GPIOLIB_IRQCHIP
1495 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1497 This driver can also be built as a module. If so, the module will be
1498 called gpio-sl28cpld.
1502 depends on MFD_STMPE
1504 select GPIOLIB_IRQCHIP
1506 This enables support for the GPIOs found on the STMPE I/O
1510 bool "TC3589X GPIOs"
1511 depends on MFD_TC3589X
1513 select GPIOLIB_IRQCHIP
1515 This enables support for the GPIOs found on the TC3589X
1518 config GPIO_TIMBERDALE
1519 bool "Support for timberdale GPIO IP"
1520 depends on MFD_TIMBERDALE
1522 Add support for the GPIO IP in the timberdale FPGA.
1524 config GPIO_TN48M_CPLD
1525 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1526 depends on MFD_TN48M_CPLD
1529 This enables support for the GPIOs found on the Delta
1530 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1531 they are input-only or output-only type.
1533 This driver can also be built as a module. If so, the
1534 module will be called gpio-tn48m.
1536 config GPIO_TPS65086
1537 tristate "TI TPS65086 GPO"
1538 depends on MFD_TPS65086
1540 This driver supports the GPO on TI TPS65086x PMICs.
1542 config GPIO_TPS65218
1543 tristate "TPS65218 GPIO"
1544 depends on MFD_TPS65218
1546 Select this option to enable GPIO driver for the TPS65218
1549 config GPIO_TPS65219
1550 tristate "TPS65219 GPIO"
1551 depends on MFD_TPS65219
1552 default MFD_TPS65219
1554 Select this option to enable GPIO driver for the TPS65219 chip
1556 GPIO0 is statically configured as either input or output prior to
1557 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1558 is statically configured by NVM. GPIO0 can't be used as a generic
1559 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1562 This driver can also be built as a module. If so, the module will be
1563 called gpio_tps65219.
1565 config GPIO_TPS6586X
1566 bool "TPS6586X GPIO"
1567 depends on MFD_TPS6586X
1569 Select this option to enable GPIO driver for the TPS6586X
1572 config GPIO_TPS65910
1573 bool "TPS65910 GPIO"
1574 depends on MFD_TPS65910
1576 Select this option to enable GPIO driver for the TPS65910
1579 config GPIO_TPS65912
1580 tristate "TI TPS65912 GPIO"
1581 depends on MFD_TPS65912
1583 This driver supports TPS65912 GPIO chip.
1585 config GPIO_TPS68470
1586 tristate "TPS68470 GPIO"
1587 depends on INTEL_SKL_INT3472
1589 Select this option to enable GPIO driver for the TPS68470
1591 There are 7 GPIOs and few sensor-related GPIOs supported
1592 by the TPS68470. While the 7 GPIOs can be configured as
1593 input or output as appropriate, the sensor related GPIOs
1594 are "output only" GPIOs.
1597 tristate "TQ-Systems TQMx86 GPIO"
1598 depends on MFD_TQMX86 || COMPILE_TEST
1599 depends on HAS_IOPORT_MAP
1600 select GPIOLIB_IRQCHIP
1602 This driver supports GPIO on the TQMX86 IO controller.
1605 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1606 depends on TWL4030_CORE
1608 Say yes here to access the GPIO signals of various multi-function
1609 power management chips from Texas Instruments.
1612 tristate "TWL6040 GPO"
1613 depends on TWL6040_CORE
1615 Say yes here to access the GPO signals of twl6040
1616 audio chip from Texas Instruments.
1618 config GPIO_WHISKEY_COVE
1619 tristate "GPIO support for Whiskey Cove PMIC"
1620 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1621 select GPIOLIB_IRQCHIP
1623 Support for GPIO pins on Whiskey Cove PMIC.
1625 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1628 This driver can also be built as a module. If so, the module will be
1632 tristate "WM831x GPIOs"
1633 depends on MFD_WM831X
1635 Say yes here to access the GPIO signals of WM831x power management
1636 chips from Wolfson Microelectronics.
1639 tristate "WM8350 GPIOs"
1640 depends on MFD_WM8350
1642 Say yes here to access the GPIO signals of WM8350 power management
1643 chips from Wolfson Microelectronics.
1646 tristate "WM8994 GPIOs"
1647 depends on MFD_WM8994
1649 Say yes here to access the GPIO signals of WM8994 audio hub
1650 CODECs from Wolfson Microelectronics.
1654 menu "PCI GPIO expanders"
1658 tristate "AMD 8111 GPIO driver"
1659 depends on X86 || COMPILE_TEST
1660 depends on HAS_IOPORT_MAP
1662 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1664 Note that usually system firmware/ACPI handles GPIO pins on their
1665 own and users might easily break their systems with uncareful usage
1671 tristate "BT8XX GPIO abuser"
1672 depends on VIDEO_BT848=n
1674 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1675 as a cheap PCI GPIO card.
1677 This chip can be found on Miro, Hauppauge and STB TV-cards.
1679 The card needs to be physically altered for using it as a
1680 GPIO card. For more information on how to build a GPIO card
1681 from a BT8xx TV card, see the documentation file at
1682 Documentation/driver-api/gpio/bt8xxgpio.rst
1686 config GPIO_MERRIFIELD
1687 tristate "Intel Merrifield GPIO support"
1688 depends on X86_INTEL_MID
1691 Say Y here to support Intel Merrifield GPIO.
1694 tristate "Mellanox BlueField SoC GPIO"
1695 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1698 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1701 tristate "Mellanox BlueField 2 SoC GPIO"
1702 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1704 select GPIOLIB_IRQCHIP
1706 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1709 tristate "Mellanox BlueField 3 SoC GPIO"
1710 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1712 select GPIOLIB_IRQCHIP
1714 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1715 This GPIO controller supports interrupt handling and enables the
1716 manipulation of certain GPIO pins.
1717 This controller should be used in parallel with pinctrl-mlxbf3 to
1718 control the desired GPIOs.
1719 This driver can also be built as a module called mlxbf3-gpio.
1722 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1723 depends on X86 || COMPILE_TEST
1724 select GENERIC_IRQ_CHIP
1726 ML7213 is companion chip for Intel Atom E6xx series.
1727 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1728 Hub) which is for IVI (In-Vehicle Infotainment) use.
1729 This driver can access the IOH's GPIO device.
1732 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1733 depends on X86_32 || MIPS || COMPILE_TEST
1734 select GENERIC_IRQ_CHIP
1736 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1737 which is an IOH (Input/Output Hub) for x86 embedded processor.
1738 This driver can access PCH GPIO device.
1740 This driver also can be used for LAPIS Semiconductor IOH (Input/
1741 Output Hub), ML7223 and ML7831.
1742 ML7223 IOH is for MP (Media Phone) use.
1743 ML7831 IOH is for general purpose use.
1744 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1745 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1747 config GPIO_PCI_IDIO_16
1748 tristate "ACCES PCI-IDIO-16 GPIO support"
1752 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1753 generated when any of the inputs change state (low to high or high to
1754 low). Input filter control is not supported by this driver, and the
1755 input filters are deactivated by this driver.
1757 config GPIO_PCIE_IDIO_24
1758 tristate "ACCES PCIe-IDIO-24 GPIO support"
1761 select GPIOLIB_IRQCHIP
1764 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1765 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1766 when any of the inputs change state (low to high or high to low).
1767 Input filter control is not supported by this driver, and the input
1768 filters are deactivated by this driver.
1771 tristate "RDC R-321x GPIO support"
1775 Support for the RDC R321x SoC GPIOs over southbridge
1776 PCI configuration space.
1778 config GPIO_SODAVILLE
1779 bool "Intel Sodaville GPIO support"
1780 depends on X86 && OF
1782 select GENERIC_IRQ_CHIP
1784 Say Y here to support Intel Sodaville GPIO.
1788 menu "SPI GPIO expanders"
1789 depends on SPI_MASTER
1792 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1795 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1796 shift registers. This driver can be used to provide access
1797 to more GPIO outputs.
1799 config GPIO_MAX3191X
1800 tristate "Maxim MAX3191x industrial serializer"
1803 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1804 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1805 chip to make 8 digital 24V inputs available via SPI. Supports
1806 CRC checksums to guard against electromagnetic interference,
1807 as well as undervoltage and overtemperature detection.
1810 tristate "Maxim MAX7301 GPIO expander"
1813 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1816 tristate "Freescale MC33880 high-side/low-side switch"
1818 SPI driver for Freescale MC33880 high-side/low-side switch.
1819 This provides GPIO interface supporting inputs and outputs.
1822 tristate "Generic parallel-in/serial-out shift register"
1824 GPIO driver for SPI compatible parallel-in/serial-out shift
1825 registers. These are input only devices.
1828 tristate "EXAR XRA1403 16-bit GPIO expander"
1831 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1834 tristate "Turris Mox Moxtet bus GPIO expander"
1837 Say yes here if you are building for the Turris Mox router.
1838 This is the driver needed for configuring the GPIOs via the Moxtet
1839 bus. For example the Mox module with SFP cage needs this driver
1840 so that phylink can use corresponding GPIOs.
1844 menu "USB GPIO expanders"
1847 config GPIO_VIPERBOARD
1848 tristate "Viperboard GPIO a & b support"
1849 depends on MFD_VIPERBOARD
1851 Say yes here to access the GPIO signals of Nano River
1852 Technologies Viperboard. There are two GPIO chips on the
1853 board: gpioa and gpiob.
1854 See viperboard API specification and Nano
1855 River Tech's viperboard.h for detailed meaning
1856 of the module parameters.
1859 tristate "FTDI MPSSE GPIO support"
1860 select GPIOLIB_IRQCHIP
1862 GPIO driver for FTDI's MPSSE interface. These can do input and
1863 output. Each MPSSE provides 16 IO pins.
1867 menu "Virtual GPIO drivers"
1869 config GPIO_AGGREGATOR
1870 tristate "GPIO Aggregator"
1872 Say yes here to enable the GPIO Aggregator, which provides a way to
1873 aggregate existing GPIO lines into a new virtual GPIO chip.
1874 This can serve the following purposes:
1875 - Assign permissions for a collection of GPIO lines to a user,
1876 - Export a collection of GPIO lines to a virtual machine,
1877 - Provide a generic driver for a GPIO-operated device in an
1878 industrial control context, to be operated from userspace using
1879 the GPIO chardev interface.
1882 tristate "GPIO latch driver"
1884 Say yes here to enable a driver for GPIO multiplexers based on latches
1885 connected to other GPIOs.
1888 tristate "GPIO Testing Driver (DEPRECATED)"
1891 This module is DEPRECATED. Please consider using gpio-sim instead.
1893 This enables GPIO Testing driver, which provides a way to test GPIO
1894 subsystem through sysfs (or char device) and debugfs.
1895 User could use it through the script in
1896 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1900 tristate "VirtIO GPIO support"
1902 select GPIOLIB_IRQCHIP
1904 Say Y here to enable guest support for virtio-based GPIO controllers.
1906 These virtual GPIOs can be routed to real GPIOs or attached to
1907 simulators on the host (like QEMU).
1910 tristate "GPIO Simulator Module"
1914 This enables the GPIO simulator - a configfs-based GPIO testing
1919 menu "GPIO Debugging utilities"
1921 config GPIO_SLOPPY_LOGIC_ANALYZER
1922 tristate "Sloppy GPIO logic analyzer"
1923 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
1925 This option enables support for a sloppy logic analyzer using polled
1926 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
1927 this driver. The script will make it easier to use and will also
1928 isolate a CPU for the polling task. Note that this is a last resort
1929 analyzer which can be affected by latencies, non-deterministic code
1930 paths, or NMIs. However, for e.g. remote development, it may be useful
1931 to get a first view and aid further debugging.
1933 If this driver is built as a module it will be called
1934 'gpio-sloppy-logic-analyzer'.
1936 config GPIO_VIRTUSER
1937 tristate "GPIO Virtual User Testing Module"
1942 Say Y here to enable the configurable, configfs-based virtual GPIO
1943 consumer testing driver.
1945 This driver is aimed as a helper in spotting any regressions in
1946 hot-unplug handling in GPIOLIB.