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 # put drivers in the right section, in alphabetical order
108 # This symbol is selected by both I2C and SPI expanders
115 select GPIOLIB_IRQCHIP
118 Enables support for the idio-16 library functions. The idio-16 library
119 provides functions to facilitate communication with devices within the
120 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
122 If built as a module its name will be gpio-idio-16.
124 menu "Memory mapped GPIO drivers"
127 config GPIO_74XX_MMIO
128 tristate "GPIO driver for 74xx-ICs with MMIO access"
132 Say yes here to support GPIO functionality for 74xx-compatible ICs
133 with MMIO access. Compatible models include:
134 1 bit: 741G125 (Input), 741G74 (Output)
135 2 bits: 742G125 (Input), 7474 (Output)
136 4 bits: 74125 (Input), 74175 (Output)
137 6 bits: 74365 (Input), 74174 (Output)
138 8 bits: 74244 (Input), 74273 (Output)
139 16 bits: 741624 (Input), 7416374 (Output)
142 tristate "Altera GPIO"
144 select GPIOLIB_IRQCHIP
145 select OF_GPIO_MM_GPIOCHIP
147 Say Y or M here to build support for the Altera PIO device.
149 If driver is built as a module it will be called gpio-altera.
152 tristate "AMD Promontory GPIO support"
156 Driver for GPIO functionality on Promontory IOHub.
157 Requires ACPI ASL code to enumerate as a platform device.
160 tristate "Aspeed GPIO support"
161 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
162 select GPIOLIB_IRQCHIP
164 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
166 config GPIO_ASPEED_SGPIO
167 bool "Aspeed SGPIO support"
168 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
170 select GPIOLIB_IRQCHIP
172 Say Y here to support Aspeed AST2500 SGPIO functionality.
175 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
177 depends on ATH79 || COMPILE_TEST
179 select GPIOLIB_IRQCHIP
181 Select this option to enable GPIO driver for
182 Atheros AR71XX/AR724X/AR913X SoC devices.
184 config GPIO_RASPBERRYPI_EXP
185 tristate "Raspberry Pi 3 GPIO Expander"
186 default RASPBERRYPI_FIRMWARE
188 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
189 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
190 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
192 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
193 the firmware mailbox to communicate with VideoCore on BCM283x chips.
196 bool "Broadcom Kona GPIO"
197 depends on ARCH_BCM_MOBILE || COMPILE_TEST
199 Turn on GPIO support for Broadcom "Kona" chips.
201 config GPIO_BCM_XGS_IPROC
202 tristate "BRCM XGS iProc GPIO support"
203 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
205 select GPIOLIB_IRQCHIP
206 default ARCH_BCM_IPROC
208 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
211 tristate "BRCMSTB GPIO support"
212 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
213 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
217 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
220 tristate "Cadence GPIO support"
223 select GPIOLIB_IRQCHIP
225 Say yes here to enable support for Cadence GPIO controller.
228 tristate "CLPS711X GPIO support"
229 depends on ARCH_CLPS711X || COMPILE_TEST
232 Say yes here to support GPIO on CLPS711X SoCs.
235 tristate "TI Davinci/Keystone GPIO support"
236 default y if ARCH_DAVINCI
237 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
239 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
242 tristate "Synopsys DesignWare APB GPIO driver"
244 select GPIOLIB_IRQCHIP
246 Say Y or M here to build support for the Synopsys DesignWare APB
250 tristate "Spreadtrum EIC support"
251 depends on ARCH_SPRD || COMPILE_TEST
253 select GPIOLIB_IRQCHIP
255 Say yes here to support Spreadtrum EIC device.
258 tristate "Emma Mobile GPIO"
259 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
261 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
264 tristate "Airoha GPIO support"
265 depends on ARCH_AIROHA
268 select GPIOLIB_IRQCHIP
270 Say Y or M here to support the GPIO controller block on the
271 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
275 depends on ARCH_EP93XX
277 select GPIOLIB_IRQCHIP
280 tristate "Support for GPIO pins on XR17V352/354/358"
281 depends on SERIAL_8250_EXAR
284 Selecting this option will enable handling of GPIO pins present
285 on Exar XR17V352/354/358 chips.
288 bool "GE FPGA based GPIO"
289 depends on GE_FPGA || COMPILE_TEST
292 Support for common GPIO functionality provided on some GE Single Board
295 This driver provides basic support (configure as input or output, read
296 and write pin state) for GPIO implemented in a number of GE single
299 config GPIO_FTGPIO010
300 bool "Faraday FTGPIO010 GPIO"
303 select GPIOLIB_IRQCHIP
304 default (ARCH_GEMINI || ARCH_MOXART)
306 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
307 Cortina systems Gemini platforms, Moxa ART and others.
309 config GPIO_GENERIC_PLATFORM
310 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
313 Say yes here to support basic platform_device memory-mapped GPIO controllers.
316 tristate "Aeroflex Gaisler GRGPIO support"
321 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
322 VHDL IP core library.
325 tristate "HiSilicon GPIO controller driver"
326 depends on ARM64 || COMPILE_TEST
328 select GPIOLIB_IRQCHIP
330 Say Y or M here to build support for the HiSilicon GPIO controller
332 This GPIO controller supports double-edge interrupt and multi-core
336 tristate "Nintendo Wii (Hollywood) GPIO"
339 select GPIOLIB_IRQCHIP
341 Select this to support the GPIO controller of the Nintendo Wii.
346 tristate "Intel ICH GPIO"
350 Say yes here to support the GPIO functionality of a number of Intel
351 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
352 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
353 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
362 bool "Intel IXP4xx GPIO"
363 depends on ARCH_IXP4XX
366 select GPIOLIB_IRQCHIP
367 select IRQ_DOMAIN_HIERARCHY
369 Say yes here to support the GPIO functionality of a number of Intel
370 IXP4xx series of chips.
375 tristate "Xylon LogiCVC GPIO support"
376 depends on MFD_SYSCON && OF
378 Say yes here to support GPIO functionality of the Xylon LogiCVC
379 programmable logic block.
382 bool "Loongson-2/3 GPIO support"
383 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
385 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
387 config GPIO_LOONGSON_64BIT
388 tristate "Loongson 64 bit GPIO support"
389 depends on LOONGARCH || COMPILE_TEST
393 Say yes here to support the GPIO functionality of a number of
394 Loongson series of chips. The Loongson GPIO controller supports
395 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
396 the remaining 56 are reused with other functions, with edge or
397 level triggered interrupts.
400 tristate "NXP LPC18XX/43XX GPIO support"
401 default y if ARCH_LPC18XX
402 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
403 select IRQ_DOMAIN_HIERARCHY
405 Select this option to enable GPIO driver for
406 NXP LPC18XX/43XX devices.
409 tristate "NXP LPC32XX GPIO support"
410 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
412 Select this option to enable GPIO driver for
416 tristate "GPIO support for Fujitsu MB86S7x Platforms"
418 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
421 tristate "MEN 16Z127 GPIO support"
425 Say yes here to support the MEN 16Z127 GPIO Controller.
427 config GPIO_MM_LANTIQ
428 bool "Lantiq Memory mapped GPIOs"
429 depends on LANTIQ && SOC_XWAY
430 select OF_GPIO_MM_GPIOCHIP
432 This enables support for memory mapped GPIOs on the External Bus Unit
433 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
434 created by attaching a 16-bit latch to the bus.
438 depends on PPC_MPC52xx
439 select OF_GPIO_MM_GPIOCHIP
442 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
443 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
444 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
449 Say Y here if you're going to use hardware that connects to the
450 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
453 bool "Mediatek MT7621 GPIO Support"
454 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
457 select GPIOLIB_IRQCHIP
459 Say yes here to support the Mediatek MT7621 SoC GPIO device.
463 depends on PLAT_ORION || ARCH_MVEBU
465 select GENERIC_IRQ_CHIP
469 tristate "i.MX GPIO support"
470 depends on ARCH_MXC || COMPILE_TEST
472 select GENERIC_IRQ_CHIP
475 bool "Freescale MXS GPIO support" if COMPILE_TEST
476 depends on ARCH_MXS || COMPILE_TEST
477 default y if ARCH_MXS
479 select GENERIC_IRQ_CHIP
481 config GPIO_NPCM_SGPIO
482 bool "Nuvoton SGPIO support"
483 depends on ARCH_NPCM || COMPILE_TEST
484 select GPIOLIB_IRQCHIP
486 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
489 tristate "Cavium OCTEON GPIO"
490 depends on CAVIUM_OCTEON_SOC
493 Say yes here to support the on-chip GPIO lines on the OCTEON
497 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
498 default y if ARCH_OMAP
500 select GENERIC_IRQ_CHIP
501 select GPIOLIB_IRQCHIP
503 Say yes here to enable GPIO support for TI OMAP SoCs.
506 tristate "PrimeCell PL061 GPIO support"
509 select GPIOLIB_IRQCHIP
511 Say yes here to support the PrimeCell PL061 GPIO device.
514 bool "PXA GPIO support"
515 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
517 Say yes here to support the PXA GPIO device.
520 tristate "Renesas R-Car and RZ/G GPIO support"
521 depends on ARCH_RENESAS || COMPILE_TEST
522 select GPIOLIB_IRQCHIP
524 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
527 bool "RDA Micro GPIO controller support"
528 depends on ARCH_RDA || COMPILE_TEST
531 select GPIOLIB_IRQCHIP
533 Say Y here to support RDA Micro GPIO controller.
535 config GPIO_REALTEK_OTTO
536 tristate "Realtek Otto GPIO support"
537 depends on MACH_REALTEK_RTL
538 default MACH_REALTEK_RTL
540 select GPIOLIB_IRQCHIP
542 The GPIO controller on the Otto MIPS platform supports up to two
543 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
544 are grouped in four 8-bit wide ports.
546 When built as a module, the module will be called realtek_otto_gpio.
551 A 32-bit single register GPIO fixed in/out implementation. This
552 can be used to represent any register as a set of GPIO signals.
555 tristate "Rockchip GPIO support"
556 depends on ARCH_ROCKCHIP || COMPILE_TEST
557 select GENERIC_IRQ_CHIP
558 select GPIOLIB_IRQCHIP
559 default ARCH_ROCKCHIP
561 Say yes here to support GPIO on Rockchip SoCs.
564 tristate "Realtek DHC GPIO support"
565 depends on ARCH_REALTEK
567 select GPIOLIB_IRQCHIP
569 This option enables support for GPIOs found on Realtek DHC(Digital
570 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
571 RTD1319D, RTD1395, RTD1619 and RTD1619B.
573 Say yes here to support GPIO functionality and GPIO interrupt on
576 config GPIO_SAMA5D2_PIOBU
577 tristate "SAMA5D2 PIOBU GPIO support"
578 depends on MFD_SYSCON
580 depends on ARCH_AT91 || COMPILE_TEST
583 Say yes here to use the PIOBU pins as GPIOs.
585 PIOBU pins on the SAMA5D2 can be used as GPIOs.
586 The difference from regular GPIOs is that they
587 maintain their value during backup/self-refresh.
590 tristate "SiFive GPIO support"
592 select IRQ_DOMAIN_HIERARCHY
594 select GPIOLIB_IRQCHIP
597 Say yes here to support the GPIO device on SiFive SoCs.
600 tristate "SIOX GPIO support"
602 select GPIOLIB_IRQCHIP
604 Say yes here to support SIOX I/O devices. These are units connected
605 via a SIOX bus and have a number of fixed-direction I/O lines.
607 config GPIO_SNPS_CREG
608 bool "Synopsys GPIO via CREG (Control REGisters) driver"
609 depends on ARC || COMPILE_TEST
612 This driver supports GPIOs via CREG on various Synopsys SoCs.
613 This is a single-register MMIO GPIO driver for complex cases
614 where only several fields in register belong to GPIO lines and
615 each GPIO line owns a field with different length and on/off value.
617 config GPIO_SPEAR_SPICS
618 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
619 depends on PLAT_SPEAR
620 select GENERIC_IRQ_CHIP
622 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
625 tristate "Spreadtrum GPIO support"
626 depends on ARCH_SPRD || COMPILE_TEST
628 select GPIOLIB_IRQCHIP
630 Say yes here to support Spreadtrum GPIO device.
633 bool "XWAY STP GPIOs"
634 depends on SOC_XWAY || COMPILE_TEST
637 This enables support for the Serial To Parallel (STP) unit found on
638 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
639 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
640 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
644 tristate "GPIO based on SYSCON"
645 depends on MFD_SYSCON && OF
647 Say yes here to support GPIO functionality though SYSCON driver.
651 select GPIOLIB_IRQCHIP
653 GPIO support for Intel Tangier and compatible platforms.
658 If built as a module its name will be gpio-tangier.
663 select GENERIC_IRQ_CHIP
667 tristate "NVIDIA Tegra GPIO support"
669 depends on ARCH_TEGRA || COMPILE_TEST
671 select GPIOLIB_IRQCHIP
672 select IRQ_DOMAIN_HIERARCHY
674 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
677 tristate "NVIDIA Tegra186 GPIO support"
678 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
679 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
681 select GPIOLIB_IRQCHIP
682 select IRQ_DOMAIN_HIERARCHY
684 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
687 tristate "TS-4800 DIO blocks and compatibles"
689 depends on SOC_IMX51 || COMPILE_TEST
692 This driver support TS-4800 FPGA GPIO controllers.
695 tristate "Cavium ThunderX/OCTEON-TX GPIO"
696 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
698 select GPIOLIB_IRQCHIP
699 select IRQ_DOMAIN_HIERARCHY
700 select IRQ_FASTEOI_HIERARCHY_HANDLERS
702 Say yes here to support the on-chip GPIO lines on the ThunderX
703 and OCTEON-TX families of SoCs.
706 tristate "UniPhier GPIO support"
707 depends on ARCH_UNIPHIER || COMPILE_TEST
709 select IRQ_DOMAIN_HIERARCHY
711 Say yes here to support UniPhier GPIOs.
716 select GPIOLIB_IRQCHIP
718 Say yes here to support i.MX or Vybrid vf610 GPIOs.
721 tristate "Toshiba Visconti GPIO support"
722 depends on ARCH_VISCONTI || COMPILE_TEST
724 select GPIOLIB_IRQCHIP
726 select IRQ_DOMAIN_HIERARCHY
728 Say yes here to support GPIO on Tohisba Visconti.
731 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
732 depends on MFD_WCD934X && OF_GPIO
734 This driver is to support GPIO block found on the Qualcomm Technologies
735 Inc WCD9340/WCD9341 Audio Codec.
738 bool "APM X-Gene GPIO controller support"
739 depends on ARM64 && OF_GPIO
741 This driver is to support the GPIO block within the APM X-Gene SoC
742 platform's generic flash controller. The GPIO pins are muxed with
743 the generic flash controller's address and data pins. Say yes
744 here to enable the GFC GPIO functionality.
747 tristate "APM X-Gene GPIO standby controller support"
748 depends on (ARCH_XGENE || COMPILE_TEST)
750 select GPIOLIB_IRQCHIP
751 select IRQ_DOMAIN_HIERARCHY
753 This driver supports the GPIO block within the APM X-Gene
754 Standby Domain. Say yes here to enable the GPIO functionality.
757 tristate "Xilinx GPIO support"
758 select GPIOLIB_IRQCHIP
761 Say yes here to support the Xilinx FPGA GPIO device.
764 tristate "Cavium ThunderX2 GPIO support"
765 depends on ARCH_THUNDER2 || COMPILE_TEST
766 select GPIOLIB_IRQCHIP
768 This driver provides support for GPIO interface on Cavium's ThunderX2
769 CN99XX SoCs (Originally from Netlogic XLP).
774 bool "Xtensa GPIO32 support"
776 depends on HAVE_XTENSA_GPIO32
779 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
780 and EXPSTATE (output) ports.
783 bool "LSI ZEVIO SoC memory mapped GPIOs"
786 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
789 tristate "Xilinx Zynq GPIO support"
790 depends on ARCH_ZYNQ || ARCH_ZYNQMP
791 select GPIOLIB_IRQCHIP
793 Say yes here to support Xilinx Zynq GPIO controller.
795 config GPIO_ZYNQMP_MODEPIN
796 tristate "ZynqMP ps-mode pin GPIO configuration driver"
797 depends on ZYNQMP_FIRMWARE
798 default ZYNQMP_FIRMWARE
800 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
803 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
804 is 4-bits boot mode pins. It sets and gets the status of
805 the ps-mode pin. Every pin can be configured as input/output.
807 config GPIO_LOONGSON1
808 tristate "Loongson1 GPIO support"
809 depends on MACH_LOONGSON32
812 Say Y or M here to support GPIO on Loongson1 SoCs.
815 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
817 This option enables driver for GPIO on AMD's Fusion Controller Hub,
818 as found on G-series SOCs (e.g. GX-412TC).
820 Note: This driver doesn't register itself automatically, as it
821 needs to be provided with platform-specific configuration.
822 (See e.g. CONFIG_PCENGINES_APU2.)
825 bool "MStar MSC313 GPIO support"
826 depends on ARCH_MSTARV7
828 select GPIOLIB_IRQCHIP
829 select IRQ_DOMAIN_HIERARCHY
831 Say Y here to support the main GPIO block on MStar/SigmaStar
835 tristate "IDT 79RC3243X GPIO support"
836 depends on MIKROTIK_RB532 || COMPILE_TEST
838 select GPIOLIB_IRQCHIP
840 Select this option to enable GPIO driver for
841 IDT 79RC3243X-based devices like Mikrotik RB532.
843 To compile this driver as a module, choose M here: the module will
844 be called gpio-idt3243x.
848 menu "Port-mapped I/O GPIO drivers"
849 depends on X86 && HAS_IOPORT # I/O space access
852 tristate "VIA VX855/VX875 GPIO"
857 Support access to the VX855/VX875 GPIO lines through the GPIO library.
859 This driver provides common support for accessing the device.
860 Additional drivers must be enabled in order to use the
861 functionality of the device.
867 Enables support for the i8255 interface library functions. The i8255
868 interface library provides functions to facilitate communication with
869 interfaces compatible with the venerable Intel 8255 Programmable
870 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
871 in the early 1970s but compatible interfaces are nowadays typically
872 found embedded in larger VLSI processing chips and FPGA components.
874 If built as a module its name will be gpio-i8255.
876 config GPIO_104_DIO_48E
877 tristate "ACCES 104-DIO-48E GPIO support"
882 select GPIOLIB_IRQCHIP
886 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
887 104-DIO-24E). The base port addresses for the devices may be
888 configured via the base module parameter. The interrupt line numbers
889 for the devices may be configured via the irq module parameter.
891 config GPIO_104_IDIO_16
892 tristate "ACCES 104-IDIO-16 GPIO support"
898 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
899 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
900 base port addresses for the devices may be configured via the base
901 module parameter. The interrupt line numbers for the devices may be
902 configured via the irq module parameter.
904 config GPIO_104_IDI_48
905 tristate "ACCES 104-IDI-48 GPIO support"
910 select GPIOLIB_IRQCHIP
913 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
914 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
915 the devices may be configured via the base module parameter. The
916 interrupt line numbers for the devices may be configured via the irq
920 tristate "Fintek and Nuvoton Super-I/O GPIO support"
922 This option enables support for GPIOs found on Fintek Super-I/O
923 chips F71869, F71869A, F71882FG, F71889F and F81866.
924 As well as Nuvoton Super-I/O chip NCT6126D.
926 To compile this driver as a module, choose M here: the module will
927 be called f7188x-gpio.
930 tristate "Diamond Systems GPIO-MM GPIO support"
936 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
938 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
939 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
940 support for these 48 channels of digital I/O.
942 The base port addresses for the devices may be configured via the base
943 array module parameter.
946 tristate "IT87xx GPIO support"
948 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
950 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
951 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
954 To compile this driver as a module, choose M here: the module will
958 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
959 depends on (X86 || COMPILE_TEST) && ACPI
961 select GPIOLIB_IRQCHIP
963 Say yes here to support GPIO interface on Intel Poulsbo SCH,
964 Intel Tunnel Creek processor, Intel Centerton processor or
965 Intel Quark X1000 SoC.
967 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
968 powered by the core power rail and are turned off during sleep
969 modes (S3 and higher). The remaining four GPIOs are powered by
970 the Intel SCH suspend power supply. These GPIOs remain
971 active during S3. The suspend-powered GPIOs can be used to wake the
972 system from the Suspend-to-RAM state.
974 The Intel Tunnel Creek processor has 5 GPIOs powered by the
975 core power rail and 9 from suspend power supply.
977 The Intel Centerton processor has a total of 30 GPIO pins.
978 Twenty-one are powered by the core power rail and 9 from the
979 suspend power supply.
981 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
982 power well and 6 from the suspend power well.
985 tristate "SMSC SCH311x SuperI/O GPIO"
987 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
988 SCH3116 "Super I/O" chipsets.
990 To compile this driver as a module, choose M here: the module will
991 be called gpio-sch311x.
994 tristate "TS-5500 DIO blocks and compatibles"
995 depends on TS5500 || COMPILE_TEST
997 This driver supports Digital I/O exposed by pin blocks found on some
998 Technologic Systems platforms. It includes, but is not limited to, 3
999 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1003 tristate "Winbond Super I/O GPIO support"
1006 This option enables support for GPIOs found on Winbond Super I/O
1008 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1011 You will need to provide a module parameter "gpios", or a
1012 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1013 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1015 To compile this driver as a module, choose M here: the module will
1016 be called gpio-winbond.
1019 tristate "WinSystems WS16C48 GPIO support"
1023 select GPIOLIB_IRQCHIP
1026 Enables GPIO support for the WinSystems WS16C48. The base port
1027 addresses for the devices may be configured via the base module
1028 parameter. The interrupt line numbers for the devices may be
1029 configured via the irq module parameter.
1033 menu "I2C GPIO expanders"
1037 tristate "Avionic Design N-bit GPIO expander"
1039 select GPIOLIB_IRQCHIP
1041 This option enables support for N GPIOs found on Avionic Design
1042 I2C GPIO expanders. The register space will be extended by powers
1043 of two, so the controller will need to accommodate for that. For
1044 example: if a controller provides 48 pins, 6 registers will be
1045 enough to represent all pins, but the driver will assume a
1046 register layout for 64 pins (8 registers).
1049 tristate "FXL6408 I2C GPIO expander"
1053 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1055 To compile this driver as a module, choose M here: the module will
1056 be called gpio-fxl6408.
1059 tristate "DS4520 I2C GPIO expander"
1063 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1064 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1066 To compile this driver as a module, choose M here: the module will
1067 be called gpio-ds4520.
1070 tristate "Gateworks PLD GPIO Expander"
1073 Say yes here to provide access to the Gateworks I2C PLD GPIO
1074 Expander. This is used at least on the Cambria GW2358-4.
1077 tristate "Maxim MAX7300 GPIO expander"
1080 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1083 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1085 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1086 Port Expanders. Each IO port on these chips has a fixed role of
1087 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1088 Input and Output (designed by 'P'). The combinations are listed
1091 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1092 max7322 (4I4O), max7323 (4P4O)
1094 16 bits: max7324 (8I8O), max7325 (8P8O),
1095 max7326 (4I12O), max7327 (4P12O)
1097 Board setup code must specify the model to use, and the start
1098 number for these GPIOs.
1100 config GPIO_MAX732X_IRQ
1101 bool "Interrupt controller support for MAX732x"
1102 depends on GPIO_MAX732X=y
1103 select GPIOLIB_IRQCHIP
1105 Say yes here to enable the max732x to be used as an interrupt
1106 controller. It requires the driver to be built in the kernel.
1109 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1112 Say yes here to provide access to several register-oriented
1113 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1116 4 bits: pca9536, pca9537
1118 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1119 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1121 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1126 40 bits: pca9505, pca9698
1128 config GPIO_PCA953X_IRQ
1129 bool "Interrupt controller support for PCA953x"
1130 depends on GPIO_PCA953X
1131 select GPIOLIB_IRQCHIP
1133 Say yes here to enable the pca953x to be used as an interrupt
1137 tristate "PCA9570 4-Bit I2C GPO expander"
1139 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1141 To compile this driver as a module, choose M here: the module will
1142 be called gpio-pca9570.
1145 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1146 select GPIOLIB_IRQCHIP
1149 Say yes here to provide access to most "quasi-bidirectional" I2C
1150 GPIO expanders used for additional digital outputs or inputs.
1151 Most of these parts are from NXP, though TI is a second source for
1152 some of them. Compatible models include:
1154 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1155 pca9670, pca9672, pca9674, pca9674a,
1158 16 bits: pcf8575, pcf8575c, pca8575,
1159 pca9671, pca9673, pca9675
1161 Your board setup code will need to declare the expanders in
1162 use, and assign numbers to the GPIOs they expose. Those GPIOs
1163 can then be used from drivers and other kernel code, just like
1164 other GPIOs, but only accessible from task contexts.
1166 This driver provides an in-kernel interface to those GPIOs using
1167 platform-neutral GPIO calls.
1169 config GPIO_TPIC2810
1170 tristate "TPIC2810 8-Bit I2C GPO expander"
1172 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1174 To compile this driver as a module, choose M here: the module will
1175 be called gpio-tpic2810.
1178 tristate "Technologic Systems FPGA I2C GPIO"
1179 depends on SOC_IMX6 || COMPILE_TEST
1182 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1183 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1187 menu "MFD GPIO expanders"
1190 tristate "GPIO Support for ADP5520 PMIC"
1191 depends on PMIC_ADP5520
1193 This option enables support for on-chip GPIO found
1194 on Analog Devices ADP5520 PMICs.
1196 config GPIO_ALTERA_A10SR
1197 tristate "Altera Arria10 System Resource GPIO"
1198 depends on MFD_ALTERA_A10SR
1200 Driver for Arria10 Development Kit GPIO expansion which
1201 includes reads of pushbuttons and DIP switches as well
1205 tristate "Wolfson Microelectronics Arizona class devices"
1206 depends on MFD_ARIZONA
1208 Support for GPIOs on Wolfson Arizona class devices.
1211 tristate "ROHM BD71815 PMIC GPIO support"
1212 depends on MFD_ROHM_BD71828
1214 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1215 available on the ROHM PMIC.
1217 This driver can also be built as a module. If so, the module
1218 will be called gpio-bd71815.
1221 tristate "ROHM BD71828 GPIO support"
1222 depends on MFD_ROHM_BD71828
1224 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1225 available on the ROHM PMIC in total. The GPIOs are limited to
1226 outputs only and pins must be configured to GPIO outputs by
1227 OTP. Enable this only if you want to use these pins as outputs.
1229 This driver can also be built as a module. If so, the module
1230 will be called gpio-bd71828.
1232 config GPIO_BD9571MWV
1233 tristate "ROHM BD9571 GPIO support"
1234 depends on MFD_BD9571MWV
1236 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1237 available on the ROHM PMIC in total, both of which can also
1238 generate interrupts.
1240 This driver can also be built as a module. If so, the module
1241 will be called gpio-bd9571mwv.
1243 config GPIO_CRYSTAL_COVE
1244 tristate "GPIO support for Crystal Cove PMIC"
1245 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1246 select GPIOLIB_IRQCHIP
1248 Support for GPIO pins on Crystal Cove PMIC.
1250 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1253 This driver can also be built as a module. If so, the module will be
1254 called gpio-crystalcove.
1257 tristate "AMD CS5535/CS5536 GPIO support"
1258 depends on X86 || MIPS || COMPILE_TEST
1259 depends on MFD_CS5535
1261 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1262 can be used for quite a number of things. The CS5535/6 is found on
1263 AMD Geode and Lemote Yeeloong devices.
1268 tristate "Dialog DA9052 GPIO"
1269 depends on PMIC_DA9052
1271 Say yes here to enable the GPIO driver for the DA9052 chip.
1274 tristate "Dialog Semiconductor DA9055 GPIO"
1275 depends on MFD_DA9055
1277 Say yes here to enable the GPIO driver for the DA9055 chip.
1279 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1280 be controlled by this driver.
1282 If driver is built as a module it will be called gpio-da9055.
1285 tristate "Diolan DLN2 GPIO support"
1287 select GPIOLIB_IRQCHIP
1290 Select this option to enable GPIO driver for the Diolan DLN2
1293 This driver can also be built as a module. If so, the module
1294 will be called gpio-dln2.
1297 bool "HTC EGPIO support"
1300 This driver supports the CPLD egpio chip present on
1301 several HTC phones. It provides basic support for input
1302 pins, output pins, and IRQs.
1304 config GPIO_ELKHARTLAKE
1305 tristate "Intel Elkhart Lake PSE GPIO support"
1306 depends on X86 || COMPILE_TEST
1309 Select this option to enable GPIO support for Intel Elkhart Lake
1312 To compile this driver as a module, choose M here: the module will
1313 be called gpio-elkhartlake.
1315 config GPIO_JANZ_TTL
1316 tristate "Janz VMOD-TTL Digital IO Module"
1317 depends on MFD_JANZ_CMODIO
1319 This enables support for the Janz VMOD-TTL Digital IO module.
1320 This driver provides support for driving the pins in output
1321 mode only. Input mode is not supported.
1324 tristate "Kontron ETX / COMexpress GPIO"
1325 depends on MFD_KEMPLD
1327 This enables support for the PLD GPIO interface on some Kontron ETX
1328 and COMexpress (ETXexpress) modules.
1330 This driver can also be built as a module. If so, the module will be
1334 tristate "INTEL La Jolla Cove Adapter GPIO support"
1336 select GPIOLIB_IRQCHIP
1339 Select this option to enable GPIO driver for the INTEL
1340 La Jolla Cove Adapter (LJCA) board.
1342 This driver can also be built as a module. If so, the module
1343 will be called gpio-ljca.
1346 tristate "TI/National Semiconductor LP3943 GPIO expander"
1347 depends on MFD_LP3943
1349 GPIO driver for LP3943 MFD.
1350 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1351 Open drain outputs are required for this usage.
1354 tristate "TI LP873X GPO"
1355 depends on MFD_TI_LP873X
1357 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1360 This driver can also be built as a module. If so, the module will be
1364 tristate "TI LP87565 GPIO"
1365 depends on MFD_TI_LP87565
1367 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1370 This driver can also be built as a module. If so, the module will be
1371 called gpio-lp87565.
1374 tristate "Cirrus Logic Madera class codecs"
1375 depends on PINCTRL_MADERA
1377 Support for GPIOs on Cirrus Logic Madera class codecs.
1379 config GPIO_MAX77620
1380 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1381 depends on MFD_MAX77620
1382 select GPIOLIB_IRQCHIP
1384 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1385 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1386 driver also provides interrupt support for each of the GPIOs.
1387 Say yes here to enable the max77620 to be used as GPIO controller.
1389 config GPIO_MAX77650
1390 tristate "Maxim MAX77650/77651 GPIO support"
1391 depends on MFD_MAX77650
1393 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1394 These chips have a single pin that can be configured as GPIO.
1397 bool "TI PALMAS series PMICs GPIO"
1398 depends on MFD_PALMAS
1400 Select this option to enable GPIO driver for the TI PALMAS
1403 config GPIO_PMIC_EIC_SPRD
1404 tristate "Spreadtrum PMIC EIC support"
1405 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1407 select GPIOLIB_IRQCHIP
1409 Say yes here to support Spreadtrum PMIC EIC device.
1412 bool "RICOH RC5T583 GPIO"
1413 depends on MFD_RC5T583
1415 Select this option to enable GPIO driver for the Ricoh RC5T583
1417 This driver provides the support for driving/reading the GPIO pins
1418 of RC5T583 device through standard GPIO library.
1420 config GPIO_SL28CPLD
1421 tristate "Kontron sl28cpld GPIO support"
1422 depends on MFD_SL28CPLD || COMPILE_TEST
1424 select GPIOLIB_IRQCHIP
1427 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1429 This driver can also be built as a module. If so, the module will be
1430 called gpio-sl28cpld.
1434 depends on MFD_STMPE
1436 select GPIOLIB_IRQCHIP
1438 This enables support for the GPIOs found on the STMPE I/O
1442 bool "TC3589X GPIOs"
1443 depends on MFD_TC3589X
1445 select GPIOLIB_IRQCHIP
1447 This enables support for the GPIOs found on the TC3589X
1450 config GPIO_TIMBERDALE
1451 bool "Support for timberdale GPIO IP"
1452 depends on MFD_TIMBERDALE
1454 Add support for the GPIO IP in the timberdale FPGA.
1456 config GPIO_TN48M_CPLD
1457 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1458 depends on MFD_TN48M_CPLD
1461 This enables support for the GPIOs found on the Delta
1462 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1463 they are input-only or output-only type.
1465 This driver can also be built as a module. If so, the
1466 module will be called gpio-tn48m.
1468 config GPIO_TPS65086
1469 tristate "TI TPS65086 GPO"
1470 depends on MFD_TPS65086
1472 This driver supports the GPO on TI TPS65086x PMICs.
1474 config GPIO_TPS65218
1475 tristate "TPS65218 GPIO"
1476 depends on MFD_TPS65218
1478 Select this option to enable GPIO driver for the TPS65218
1481 config GPIO_TPS65219
1482 tristate "TPS65219 GPIO"
1483 depends on MFD_TPS65219
1484 default MFD_TPS65219
1486 Select this option to enable GPIO driver for the TPS65219 chip
1488 GPIO0 is statically configured as either input or output prior to
1489 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1490 is statically configured by NVM. GPIO0 can't be used as a generic
1491 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1494 This driver can also be built as a module. If so, the module will be
1495 called gpio_tps65219.
1497 config GPIO_TPS6586X
1498 bool "TPS6586X GPIO"
1499 depends on MFD_TPS6586X
1501 Select this option to enable GPIO driver for the TPS6586X
1504 config GPIO_TPS65910
1505 bool "TPS65910 GPIO"
1506 depends on MFD_TPS65910
1508 Select this option to enable GPIO driver for the TPS65910
1511 config GPIO_TPS65912
1512 tristate "TI TPS65912 GPIO"
1513 depends on MFD_TPS65912
1515 This driver supports TPS65912 GPIO chip.
1517 config GPIO_TPS68470
1518 tristate "TPS68470 GPIO"
1519 depends on INTEL_SKL_INT3472
1521 Select this option to enable GPIO driver for the TPS68470
1523 There are 7 GPIOs and few sensor-related GPIOs supported
1524 by the TPS68470. While the 7 GPIOs can be configured as
1525 input or output as appropriate, the sensor related GPIOs
1526 are "output only" GPIOs.
1529 tristate "TQ-Systems QTMX86 GPIO"
1530 depends on MFD_TQMX86 || COMPILE_TEST
1531 depends on HAS_IOPORT_MAP
1532 select GPIOLIB_IRQCHIP
1534 This driver supports GPIO on the TQMX86 IO controller.
1537 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1538 depends on TWL4030_CORE
1540 Say yes here to access the GPIO signals of various multi-function
1541 power management chips from Texas Instruments.
1544 tristate "TWL6040 GPO"
1545 depends on TWL6040_CORE
1547 Say yes here to access the GPO signals of twl6040
1548 audio chip from Texas Instruments.
1550 config GPIO_WHISKEY_COVE
1551 tristate "GPIO support for Whiskey Cove PMIC"
1552 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1553 select GPIOLIB_IRQCHIP
1555 Support for GPIO pins on Whiskey Cove PMIC.
1557 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1560 This driver can also be built as a module. If so, the module will be
1564 tristate "WM831x GPIOs"
1565 depends on MFD_WM831X
1567 Say yes here to access the GPIO signals of WM831x power management
1568 chips from Wolfson Microelectronics.
1571 tristate "WM8350 GPIOs"
1572 depends on MFD_WM8350
1574 Say yes here to access the GPIO signals of WM8350 power management
1575 chips from Wolfson Microelectronics.
1578 tristate "WM8994 GPIOs"
1579 depends on MFD_WM8994
1581 Say yes here to access the GPIO signals of WM8994 audio hub
1582 CODECs from Wolfson Microelectronics.
1586 menu "PCI GPIO expanders"
1590 tristate "AMD 8111 GPIO driver"
1591 depends on X86 || COMPILE_TEST
1592 depends on HAS_IOPORT_MAP
1594 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1596 Note that usually system firmware/ACPI handles GPIO pins on their
1597 own and users might easily break their systems with uncareful usage
1603 tristate "BT8XX GPIO abuser"
1604 depends on VIDEO_BT848=n
1606 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1607 as a cheap PCI GPIO card.
1609 This chip can be found on Miro, Hauppauge and STB TV-cards.
1611 The card needs to be physically altered for using it as a
1612 GPIO card. For more information on how to build a GPIO card
1613 from a BT8xx TV card, see the documentation file at
1614 Documentation/driver-api/gpio/bt8xxgpio.rst
1618 config GPIO_MERRIFIELD
1619 tristate "Intel Merrifield GPIO support"
1620 depends on X86_INTEL_MID
1623 Say Y here to support Intel Merrifield GPIO.
1626 tristate "Mellanox BlueField SoC GPIO"
1627 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1630 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1633 tristate "Mellanox BlueField 2 SoC GPIO"
1634 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1636 select GPIOLIB_IRQCHIP
1638 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1641 tristate "Mellanox BlueField 3 SoC GPIO"
1642 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1644 select GPIOLIB_IRQCHIP
1646 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1647 This GPIO controller supports interrupt handling and enables the
1648 manipulation of certain GPIO pins.
1649 This controller should be used in parallel with pinctrl-mlxbf3 to
1650 control the desired GPIOs.
1651 This driver can also be built as a module called mlxbf3-gpio.
1654 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1655 depends on X86 || COMPILE_TEST
1656 select GENERIC_IRQ_CHIP
1658 ML7213 is companion chip for Intel Atom E6xx series.
1659 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1660 Hub) which is for IVI (In-Vehicle Infotainment) use.
1661 This driver can access the IOH's GPIO device.
1664 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1665 depends on X86_32 || MIPS || COMPILE_TEST
1666 select GENERIC_IRQ_CHIP
1668 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1669 which is an IOH (Input/Output Hub) for x86 embedded processor.
1670 This driver can access PCH GPIO device.
1672 This driver also can be used for LAPIS Semiconductor IOH (Input/
1673 Output Hub), ML7223 and ML7831.
1674 ML7223 IOH is for MP (Media Phone) use.
1675 ML7831 IOH is for general purpose use.
1676 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1677 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1679 config GPIO_PCI_IDIO_16
1680 tristate "ACCES PCI-IDIO-16 GPIO support"
1684 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1685 generated when any of the inputs change state (low to high or high to
1686 low). Input filter control is not supported by this driver, and the
1687 input filters are deactivated by this driver.
1689 config GPIO_PCIE_IDIO_24
1690 tristate "ACCES PCIe-IDIO-24 GPIO support"
1693 select GPIOLIB_IRQCHIP
1696 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1697 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1698 when any of the inputs change state (low to high or high to low).
1699 Input filter control is not supported by this driver, and the input
1700 filters are deactivated by this driver.
1703 tristate "RDC R-321x GPIO support"
1707 Support for the RDC R321x SoC GPIOs over southbridge
1708 PCI configuration space.
1710 config GPIO_SODAVILLE
1711 bool "Intel Sodaville GPIO support"
1712 depends on X86 && OF
1714 select GENERIC_IRQ_CHIP
1716 Say Y here to support Intel Sodaville GPIO.
1720 menu "SPI GPIO expanders"
1721 depends on SPI_MASTER
1724 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1727 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1728 shift registers. This driver can be used to provide access
1729 to more GPIO outputs.
1731 config GPIO_MAX3191X
1732 tristate "Maxim MAX3191x industrial serializer"
1735 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1736 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1737 chip to make 8 digital 24V inputs available via SPI. Supports
1738 CRC checksums to guard against electromagnetic interference,
1739 as well as undervoltage and overtemperature detection.
1742 tristate "Maxim MAX7301 GPIO expander"
1745 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1748 tristate "Freescale MC33880 high-side/low-side switch"
1750 SPI driver for Freescale MC33880 high-side/low-side switch.
1751 This provides GPIO interface supporting inputs and outputs.
1754 tristate "Generic parallel-in/serial-out shift register"
1756 GPIO driver for SPI compatible parallel-in/serial-out shift
1757 registers. These are input only devices.
1760 tristate "EXAR XRA1403 16-bit GPIO expander"
1763 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1766 tristate "Turris Mox Moxtet bus GPIO expander"
1769 Say yes here if you are building for the Turris Mox router.
1770 This is the driver needed for configuring the GPIOs via the Moxtet
1771 bus. For example the Mox module with SFP cage needs this driver
1772 so that phylink can use corresponding GPIOs.
1776 menu "USB GPIO expanders"
1779 config GPIO_VIPERBOARD
1780 tristate "Viperboard GPIO a & b support"
1781 depends on MFD_VIPERBOARD
1783 Say yes here to access the GPIO signals of Nano River
1784 Technologies Viperboard. There are two GPIO chips on the
1785 board: gpioa and gpiob.
1786 See viperboard API specification and Nano
1787 River Tech's viperboard.h for detailed meaning
1788 of the module parameters.
1792 menu "Virtual GPIO drivers"
1794 config GPIO_AGGREGATOR
1795 tristate "GPIO Aggregator"
1797 Say yes here to enable the GPIO Aggregator, which provides a way to
1798 aggregate existing GPIO lines into a new virtual GPIO chip.
1799 This can serve the following purposes:
1800 - Assign permissions for a collection of GPIO lines to a user,
1801 - Export a collection of GPIO lines to a virtual machine,
1802 - Provide a generic driver for a GPIO-operated device in an
1803 industrial control context, to be operated from userspace using
1804 the GPIO chardev interface.
1807 tristate "GPIO latch driver"
1809 Say yes here to enable a driver for GPIO multiplexers based on latches
1810 connected to other GPIOs.
1813 tristate "GPIO Testing Driver (DEPRECATED)"
1816 This module is DEPRECATED. Please consider using gpio-sim instead.
1818 This enables GPIO Testing driver, which provides a way to test GPIO
1819 subsystem through sysfs (or char device) and debugfs.
1820 User could use it through the script in
1821 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1825 tristate "VirtIO GPIO support"
1827 select GPIOLIB_IRQCHIP
1829 Say Y here to enable guest support for virtio-based GPIO controllers.
1831 These virtual GPIOs can be routed to real GPIOs or attached to
1832 simulators on the host (like QEMU).
1835 tristate "GPIO Simulator Module"
1839 This enables the GPIO simulator - a configfs-based GPIO testing