1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
6 config ARCH_HAVE_CUSTOM_GPIO_H
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this if you also want to enable
19 one or more of the GPIO drivers below.
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
46 config GPIOLIB_IRQCHIP
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
62 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
64 select GPIO_CDEV # We need to encourage the new ABI
66 Say Y here to add the legacy sysfs interface for GPIOs.
68 This ABI is deprecated. If you want to use GPIO from userspace,
69 use the character device /dev/gpiochipN with the appropriate
70 ioctl() operations instead.
74 prompt "Character device (/dev/gpiochipN) support" if EXPERT
77 Say Y here to add the character device /dev/gpiochipN interface
78 for GPIOs. The character device allows userspace to control GPIOs
79 using ioctl() operations.
81 Only say N if you are sure that the GPIO character device is not
87 bool "Support GPIO ABI Version 1"
91 Say Y here to support version 1 of the GPIO CDEV ABI.
93 This ABI version is deprecated.
94 Please use the latest ABI for new developments.
99 depends on HAS_IOMEM # Only for IOMEM drivers
106 # put drivers in the right section, in alphabetical order
108 # This symbol is selected by both I2C and SPI expanders
112 menu "Memory mapped GPIO drivers"
115 config GPIO_74XX_MMIO
116 tristate "GPIO driver for 74xx-ICs with MMIO access"
120 Say yes here to support GPIO functionality for 74xx-compatible ICs
121 with MMIO access. Compatible models include:
122 1 bit: 741G125 (Input), 741G74 (Output)
123 2 bits: 742G125 (Input), 7474 (Output)
124 4 bits: 74125 (Input), 74175 (Output)
125 6 bits: 74365 (Input), 74174 (Output)
126 8 bits: 74244 (Input), 74273 (Output)
127 16 bits: 741624 (Input), 7416374 (Output)
130 tristate "Altera GPIO"
132 select GPIOLIB_IRQCHIP
134 Say Y or M here to build support for the Altera PIO device.
136 If driver is built as a module it will be called gpio-altera.
139 tristate "AMD Promontory GPIO support"
143 Driver for GPIO functionality on Promontory IOHub.
144 Requires ACPI ASL code to enumerate as a platform device.
147 tristate "Aspeed GPIO support"
148 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
149 select GPIOLIB_IRQCHIP
151 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
153 config GPIO_ASPEED_SGPIO
154 bool "Aspeed SGPIO support"
155 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
157 select GPIOLIB_IRQCHIP
159 Say Y here to support Aspeed AST2500 SGPIO functionality.
162 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
164 depends on ATH79 || COMPILE_TEST
166 select GPIOLIB_IRQCHIP
168 Select this option to enable GPIO driver for
169 Atheros AR71XX/AR724X/AR913X SoC devices.
171 config GPIO_RASPBERRYPI_EXP
172 tristate "Raspberry Pi 3 GPIO Expander"
173 default RASPBERRYPI_FIRMWARE
175 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
176 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
177 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
179 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
180 the firmware mailbox to communicate with VideoCore on BCM283x chips.
183 bool "Broadcom Kona GPIO"
184 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
186 Turn on GPIO support for Broadcom "Kona" chips.
188 config GPIO_BCM_XGS_IPROC
189 tristate "BRCM XGS iProc GPIO support"
190 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
192 select GPIOLIB_IRQCHIP
193 default ARCH_BCM_IPROC
195 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
198 tristate "BRCMSTB GPIO support"
199 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
200 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
204 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
207 tristate "Cadence GPIO support"
210 select GPIOLIB_IRQCHIP
212 Say yes here to enable support for Cadence GPIO controller.
215 tristate "CLPS711X GPIO support"
216 depends on ARCH_CLPS711X || COMPILE_TEST
219 Say yes here to support GPIO on CLPS711X SoCs.
222 bool "TI Davinci/Keystone GPIO support"
223 default y if ARCH_DAVINCI
224 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
226 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
229 tristate "Synopsys DesignWare APB GPIO driver"
231 select GPIOLIB_IRQCHIP
233 Say Y or M here to build support for the Synopsys DesignWare APB
237 tristate "Spreadtrum EIC support"
238 depends on ARCH_SPRD || COMPILE_TEST
240 select GPIOLIB_IRQCHIP
242 Say yes here to support Spreadtrum EIC device.
245 tristate "Emma Mobile GPIO"
246 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
248 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
251 tristate "Airoha GPIO support"
252 depends on ARCH_AIROHA
255 select GPIOLIB_IRQCHIP
257 Say Y or M here to support the GPIO controller block on the
258 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
262 depends on ARCH_EP93XX
264 select GPIOLIB_IRQCHIP
267 tristate "Support for GPIO pins on XR17V352/354/358"
268 depends on SERIAL_8250_EXAR
271 Selecting this option will enable handling of GPIO pins present
272 on Exar XR17V352/354/358 chips.
275 bool "GE FPGA based GPIO"
279 Support for common GPIO functionality provided on some GE Single Board
282 This driver provides basic support (configure as input or output, read
283 and write pin state) for GPIO implemented in a number of GE single
286 config GPIO_FTGPIO010
287 bool "Faraday FTGPIO010 GPIO"
290 select GPIOLIB_IRQCHIP
291 default (ARCH_GEMINI || ARCH_MOXART)
293 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
294 Cortina systems Gemini platforms, Moxa ART and others.
296 config GPIO_GENERIC_PLATFORM
297 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
300 Say yes here to support basic platform_device memory-mapped GPIO controllers.
303 tristate "Aeroflex Gaisler GRGPIO support"
308 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
309 VHDL IP core library.
312 tristate "HiSilicon GPIO controller driver"
313 depends on (ARM64 && ACPI) || COMPILE_TEST
315 select GPIOLIB_IRQCHIP
317 Say Y or M here to build support for the HiSilicon GPIO controller
319 This GPIO controller supports double-edge interrupt and multi-core
323 tristate "Nintendo Wii (Hollywood) GPIO"
326 select GPIOLIB_IRQCHIP
328 Select this to support the GPIO controller of the Nintendo Wii.
333 tristate "Intel ICH GPIO"
337 Say yes here to support the GPIO functionality of a number of Intel
338 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
339 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
340 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
345 tristate "Intel IOP GPIO"
346 depends on ARCH_IOP32X || COMPILE_TEST
349 Say yes here to support the GPIO functionality of a number of Intel
350 IOP32X or IOP33X series of chips.
355 bool "Intel IXP4xx GPIO"
356 depends on ARCH_IXP4XX
359 select GPIOLIB_IRQCHIP
360 select IRQ_DOMAIN_HIERARCHY
362 Say yes here to support the GPIO functionality of a number of Intel
363 IXP4xx series of chips.
368 tristate "Xylon LogiCVC GPIO support"
369 depends on MFD_SYSCON && OF
371 Say yes here to support GPIO functionality of the Xylon LogiCVC
372 programmable logic block.
375 bool "Loongson-2/3 GPIO support"
376 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
378 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
381 tristate "NXP LPC18XX/43XX GPIO support"
382 default y if ARCH_LPC18XX
383 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
384 select IRQ_DOMAIN_HIERARCHY
386 Select this option to enable GPIO driver for
387 NXP LPC18XX/43XX devices.
390 tristate "NXP LPC32XX GPIO support"
391 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
393 Select this option to enable GPIO driver for
397 tristate "GPIO support for Fujitsu MB86S7x Platforms"
399 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
402 tristate "MEN 16Z127 GPIO support"
406 Say yes here to support the MEN 16Z127 GPIO Controller.
408 config GPIO_MM_LANTIQ
409 bool "Lantiq Memory mapped GPIOs"
410 depends on LANTIQ && SOC_XWAY
412 This enables support for memory mapped GPIOs on the External Bus Unit
413 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
414 created by attaching a 16-bit latch to the bus.
418 depends on PPC_MPC52xx
421 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
422 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
423 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
428 Say Y here if you're going to use hardware that connects to the
429 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
432 bool "Mediatek MT7621 GPIO Support"
433 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
436 select GPIOLIB_IRQCHIP
438 Say yes here to support the Mediatek MT7621 SoC GPIO device.
442 depends on PLAT_ORION || ARCH_MVEBU
444 select GENERIC_IRQ_CHIP
448 tristate "i.MX GPIO support"
449 depends on ARCH_MXC || COMPILE_TEST
451 select GENERIC_IRQ_CHIP
454 bool "Freescale MXS GPIO support" if COMPILE_TEST
455 depends on ARCH_MXS || COMPILE_TEST
456 default y if ARCH_MXS
458 select GENERIC_IRQ_CHIP
461 tristate "Cavium OCTEON GPIO"
462 depends on CAVIUM_OCTEON_SOC
465 Say yes here to support the on-chip GPIO lines on the OCTEON
469 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
470 default y if ARCH_OMAP
472 select GENERIC_IRQ_CHIP
473 select GPIOLIB_IRQCHIP
475 Say yes here to enable GPIO support for TI OMAP SoCs.
478 tristate "PrimeCell PL061 GPIO support"
481 select GPIOLIB_IRQCHIP
483 Say yes here to support the PrimeCell PL061 GPIO device.
485 config GPIO_PMIC_EIC_SPRD
486 tristate "Spreadtrum PMIC EIC support"
487 depends on MFD_SC27XX_PMIC || COMPILE_TEST
489 select GPIOLIB_IRQCHIP
491 Say yes here to support Spreadtrum PMIC EIC device.
494 bool "PXA GPIO support"
495 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
497 Say yes here to support the PXA GPIO device.
500 tristate "Renesas R-Car and RZ/G GPIO support"
501 depends on ARCH_RENESAS || COMPILE_TEST
502 select GPIOLIB_IRQCHIP
504 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
507 bool "RDA Micro GPIO controller support"
508 depends on ARCH_RDA || COMPILE_TEST
511 select GPIOLIB_IRQCHIP
513 Say Y here to support RDA Micro GPIO controller.
515 config GPIO_REALTEK_OTTO
516 tristate "Realtek Otto GPIO support"
517 depends on MACH_REALTEK_RTL
518 default MACH_REALTEK_RTL
520 select GPIOLIB_IRQCHIP
522 The GPIO controller on the Otto MIPS platform supports up to two
523 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
524 are grouped in four 8-bit wide ports.
526 When built as a module, the module will be called realtek_otto_gpio.
531 A 32-bit single register GPIO fixed in/out implementation. This
532 can be used to represent any register as a set of GPIO signals.
535 tristate "Rockchip GPIO support"
536 depends on ARCH_ROCKCHIP || COMPILE_TEST
537 select GENERIC_IRQ_CHIP
538 select GPIOLIB_IRQCHIP
539 default ARCH_ROCKCHIP
541 Say yes here to support GPIO on Rockchip SoCs.
543 config GPIO_SAMA5D2_PIOBU
544 tristate "SAMA5D2 PIOBU GPIO support"
545 depends on MFD_SYSCON
547 depends on ARCH_AT91 || COMPILE_TEST
550 Say yes here to use the PIOBU pins as GPIOs.
552 PIOBU pins on the SAMA5D2 can be used as GPIOs.
553 The difference from regular GPIOs is that they
554 maintain their value during backup/self-refresh.
557 bool "SiFive GPIO support"
559 select IRQ_DOMAIN_HIERARCHY
561 select GPIOLIB_IRQCHIP
564 Say yes here to support the GPIO device on SiFive SoCs.
567 tristate "SIOX GPIO support"
569 select GPIOLIB_IRQCHIP
571 Say yes here to support SIOX I/O devices. These are units connected
572 via a SIOX bus and have a number of fixed-direction I/O lines.
574 config GPIO_SNPS_CREG
575 bool "Synopsys GPIO via CREG (Control REGisters) driver"
576 depends on ARC || COMPILE_TEST
579 This driver supports GPIOs via CREG on various Synopsys SoCs.
580 This is a single-register MMIO GPIO driver for complex cases
581 where only several fields in register belong to GPIO lines and
582 each GPIO line owns a field with different length and on/off value.
584 config GPIO_SPEAR_SPICS
585 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
586 depends on PLAT_SPEAR
587 select GENERIC_IRQ_CHIP
589 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
592 tristate "Spreadtrum GPIO support"
593 depends on ARCH_SPRD || COMPILE_TEST
595 select GPIOLIB_IRQCHIP
597 Say yes here to support Spreadtrum GPIO device.
600 bool "STA2x11/ConneXt GPIO support"
601 depends on MFD_STA2X11
602 select GENERIC_IRQ_CHIP
604 Say yes here to support the STA2x11/ConneXt GPIO device.
605 The GPIO module has 128 GPIO pins with alternate functions.
608 bool "XWAY STP GPIOs"
609 depends on SOC_XWAY || COMPILE_TEST
612 This enables support for the Serial To Parallel (STP) unit found on
613 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
614 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
615 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
619 tristate "GPIO based on SYSCON"
620 depends on MFD_SYSCON && OF
622 Say yes here to support GPIO functionality though SYSCON driver.
627 select GENERIC_IRQ_CHIP
631 tristate "NVIDIA Tegra GPIO support"
633 depends on ARCH_TEGRA || COMPILE_TEST
635 select GPIOLIB_IRQCHIP
636 select IRQ_DOMAIN_HIERARCHY
638 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
641 tristate "NVIDIA Tegra186 GPIO support"
642 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
643 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
645 select GPIOLIB_IRQCHIP
646 select IRQ_DOMAIN_HIERARCHY
648 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
651 tristate "TS-4800 DIO blocks and compatibles"
653 depends on SOC_IMX51 || COMPILE_TEST
656 This driver support TS-4800 FPGA GPIO controllers.
659 tristate "Cavium ThunderX/OCTEON-TX GPIO"
660 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
662 select GPIOLIB_IRQCHIP
663 select IRQ_DOMAIN_HIERARCHY
664 select IRQ_FASTEOI_HIERARCHY_HANDLERS
666 Say yes here to support the on-chip GPIO lines on the ThunderX
667 and OCTEON-TX families of SoCs.
670 tristate "UniPhier GPIO support"
671 depends on ARCH_UNIPHIER || COMPILE_TEST
673 select IRQ_DOMAIN_HIERARCHY
675 Say yes here to support UniPhier GPIOs.
680 select GPIOLIB_IRQCHIP
682 Say yes here to support i.MX or Vybrid vf610 GPIOs.
685 tristate "Toshiba Visconti GPIO support"
686 depends on ARCH_VISCONTI || COMPILE_TEST
688 select GPIOLIB_IRQCHIP
690 select IRQ_DOMAIN_HIERARCHY
692 Say yes here to support GPIO on Tohisba Visconti.
695 tristate "VIA VX855/VX875 GPIO"
696 depends on (X86 || COMPILE_TEST) && PCI
700 Support access to the VX855/VX875 GPIO lines through the GPIO library.
702 This driver provides common support for accessing the device.
703 Additional drivers must be enabled in order to use the
704 functionality of the device.
707 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
708 depends on MFD_WCD934X && OF_GPIO
710 This driver is to support GPIO block found on the Qualcomm Technologies
711 Inc WCD9340/WCD9341 Audio Codec.
714 bool "APM X-Gene GPIO controller support"
715 depends on ARM64 && OF_GPIO
717 This driver is to support the GPIO block within the APM X-Gene SoC
718 platform's generic flash controller. The GPIO pins are muxed with
719 the generic flash controller's address and data pins. Say yes
720 here to enable the GFC GPIO functionality.
723 tristate "APM X-Gene GPIO standby controller support"
724 depends on (ARCH_XGENE || COMPILE_TEST)
726 select GPIOLIB_IRQCHIP
727 select IRQ_DOMAIN_HIERARCHY
729 This driver supports the GPIO block within the APM X-Gene
730 Standby Domain. Say yes here to enable the GPIO functionality.
733 tristate "Xilinx GPIO support"
734 select GPIOLIB_IRQCHIP
737 Say yes here to support the Xilinx FPGA GPIO device.
740 tristate "Cavium ThunderX2 GPIO support"
741 depends on ARCH_THUNDER2 || COMPILE_TEST
742 select GPIOLIB_IRQCHIP
744 This driver provides support for GPIO interface on Cavium's ThunderX2
745 CN99XX SoCs (Originally from Netlogic XLP).
750 bool "Xtensa GPIO32 support"
752 depends on HAVE_XTENSA_GPIO32
755 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
756 and EXPSTATE (output) ports.
759 bool "LSI ZEVIO SoC memory mapped GPIOs"
760 depends on ARM && OF_GPIO
762 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
765 tristate "Xilinx Zynq GPIO support"
766 depends on ARCH_ZYNQ || ARCH_ZYNQMP
767 select GPIOLIB_IRQCHIP
769 Say yes here to support Xilinx Zynq GPIO controller.
771 config GPIO_ZYNQMP_MODEPIN
772 tristate "ZynqMP ps-mode pin GPIO configuration driver"
773 depends on ZYNQMP_FIRMWARE
774 default ZYNQMP_FIRMWARE
776 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
779 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
780 is 4-bits boot mode pins. It sets and gets the status of
781 the ps-mode pin. Every pin can be configured as input/output.
783 config GPIO_LOONGSON1
784 tristate "Loongson1 GPIO support"
785 depends on MACH_LOONGSON32
788 Say Y or M here to support GPIO on Loongson1 SoCs.
791 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
793 This option enables driver for GPIO on AMD's Fusion Controller Hub,
794 as found on G-series SOCs (e.g. GX-412TC).
796 Note: This driver doesn't register itself automatically, as it
797 needs to be provided with platform-specific configuration.
798 (See e.g. CONFIG_PCENGINES_APU2.)
801 bool "MStar MSC313 GPIO support"
802 depends on ARCH_MSTARV7
804 select GPIOLIB_IRQCHIP
805 select IRQ_DOMAIN_HIERARCHY
807 Say Y here to support the main GPIO block on MStar/SigmaStar
811 tristate "IDT 79RC3243X GPIO support"
812 depends on MIKROTIK_RB532 || COMPILE_TEST
814 select GPIOLIB_IRQCHIP
816 Select this option to enable GPIO driver for
817 IDT 79RC3243X-based devices like Mikrotik RB532.
819 To compile this driver as a module, choose M here: the module will
820 be called gpio-idt3243x.
824 menu "Port-mapped I/O GPIO drivers"
825 depends on X86 # Unconditional I/O space access
830 Enables support for the i8255 interface library functions. The i8255
831 interface library provides functions to facilitate communication with
832 interfaces compatible with the venerable Intel 8255 Programmable
833 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
834 in the early 1970s but compatible interfaces are nowadays typically
835 found embedded in larger VLSI processing chips and FPGA components.
837 If built as a module its name will be gpio-i8255.
839 config GPIO_104_DIO_48E
840 tristate "ACCES 104-DIO-48E GPIO support"
843 select GPIOLIB_IRQCHIP
846 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
847 104-DIO-24E). The base port addresses for the devices may be
848 configured via the base module parameter. The interrupt line numbers
849 for the devices may be configured via the irq module parameter.
851 config GPIO_104_IDIO_16
852 tristate "ACCES 104-IDIO-16 GPIO support"
855 select GPIOLIB_IRQCHIP
857 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
858 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
859 base port addresses for the devices may be configured via the base
860 module parameter. The interrupt line numbers for the devices may be
861 configured via the irq module parameter.
863 config GPIO_104_IDI_48
864 tristate "ACCES 104-IDI-48 GPIO support"
867 select GPIOLIB_IRQCHIP
870 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
871 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
872 the devices may be configured via the base module parameter. The
873 interrupt line numbers for the devices may be configured via the irq
877 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
879 This option enables support for GPIOs found on Fintek Super-I/O
880 chips F71869, F71869A, F71882FG, F71889F and F81866.
882 To compile this driver as a module, choose M here: the module will
883 be called f7188x-gpio.
886 tristate "Diamond Systems GPIO-MM GPIO support"
891 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
893 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
894 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
895 support for these 48 channels of digital I/O.
897 The base port addresses for the devices may be configured via the base
898 array module parameter.
901 tristate "IT87xx GPIO support"
903 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
905 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
906 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
909 To compile this driver as a module, choose M here: the module will
913 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
914 depends on (X86 || COMPILE_TEST) && ACPI
916 select GPIOLIB_IRQCHIP
918 Say yes here to support GPIO interface on Intel Poulsbo SCH,
919 Intel Tunnel Creek processor, Intel Centerton processor or
920 Intel Quark X1000 SoC.
922 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
923 powered by the core power rail and are turned off during sleep
924 modes (S3 and higher). The remaining four GPIOs are powered by
925 the Intel SCH suspend power supply. These GPIOs remain
926 active during S3. The suspend-powered GPIOs can be used to wake the
927 system from the Suspend-to-RAM state.
929 The Intel Tunnel Creek processor has 5 GPIOs powered by the
930 core power rail and 9 from suspend power supply.
932 The Intel Centerton processor has a total of 30 GPIO pins.
933 Twenty-one are powered by the core power rail and 9 from the
934 suspend power supply.
936 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
937 power well and 6 from the suspend power well.
940 tristate "SMSC SCH311x SuperI/O GPIO"
942 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
943 SCH3116 "Super I/O" chipsets.
945 To compile this driver as a module, choose M here: the module will
946 be called gpio-sch311x.
949 tristate "TS-5500 DIO blocks and compatibles"
950 depends on TS5500 || COMPILE_TEST
952 This driver supports Digital I/O exposed by pin blocks found on some
953 Technologic Systems platforms. It includes, but is not limited to, 3
954 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
958 tristate "Winbond Super I/O GPIO support"
961 This option enables support for GPIOs found on Winbond Super I/O
963 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
966 You will need to provide a module parameter "gpios", or a
967 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
968 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
970 To compile this driver as a module, choose M here: the module will
971 be called gpio-winbond.
974 tristate "WinSystems WS16C48 GPIO support"
976 select GPIOLIB_IRQCHIP
978 Enables GPIO support for the WinSystems WS16C48. The base port
979 addresses for the devices may be configured via the base module
980 parameter. The interrupt line numbers for the devices may be
981 configured via the irq module parameter.
985 menu "I2C GPIO expanders"
989 tristate "ADP5588 I2C GPIO expander"
991 This option enables support for 18 GPIOs found
992 on Analog Devices ADP5588 GPIO Expanders.
994 config GPIO_ADP5588_IRQ
995 bool "Interrupt controller support for ADP5588"
996 depends on GPIO_ADP5588=y
997 select GPIOLIB_IRQCHIP
999 Say yes here to enable the adp5588 to be used as an interrupt
1000 controller. It requires the driver to be built in the kernel.
1003 tristate "Avionic Design N-bit GPIO expander"
1005 select GPIOLIB_IRQCHIP
1007 This option enables support for N GPIOs found on Avionic Design
1008 I2C GPIO expanders. The register space will be extended by powers
1009 of two, so the controller will need to accommodate for that. For
1010 example: if a controller provides 48 pins, 6 registers will be
1011 enough to represent all pins, but the driver will assume a
1012 register layout for 64 pins (8 registers).
1015 tristate "Gateworks PLD GPIO Expander"
1018 Say yes here to provide access to the Gateworks I2C PLD GPIO
1019 Expander. This is used at least on the Cambria GW2358-4.
1022 tristate "Maxim MAX7300 GPIO expander"
1025 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1028 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1030 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1031 Port Expanders. Each IO port on these chips has a fixed role of
1032 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1033 Input and Output (designed by 'P'). The combinations are listed
1036 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1037 max7322 (4I4O), max7323 (4P4O)
1039 16 bits: max7324 (8I8O), max7325 (8P8O),
1040 max7326 (4I12O), max7327 (4P12O)
1042 Board setup code must specify the model to use, and the start
1043 number for these GPIOs.
1045 config GPIO_MAX732X_IRQ
1046 bool "Interrupt controller support for MAX732x"
1047 depends on GPIO_MAX732X=y
1048 select GPIOLIB_IRQCHIP
1050 Say yes here to enable the max732x to be used as an interrupt
1051 controller. It requires the driver to be built in the kernel.
1054 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1057 Say yes here to provide access to several register-oriented
1058 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1061 4 bits: pca9536, pca9537
1063 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1064 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1066 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1071 40 bits: pca9505, pca9698
1073 config GPIO_PCA953X_IRQ
1074 bool "Interrupt controller support for PCA953x"
1075 depends on GPIO_PCA953X
1076 select GPIOLIB_IRQCHIP
1078 Say yes here to enable the pca953x to be used as an interrupt
1082 tristate "PCA9570 4-Bit I2C GPO expander"
1084 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1086 To compile this driver as a module, choose M here: the module will
1087 be called gpio-pca9570.
1090 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1091 select GPIOLIB_IRQCHIP
1094 Say yes here to provide access to most "quasi-bidirectional" I2C
1095 GPIO expanders used for additional digital outputs or inputs.
1096 Most of these parts are from NXP, though TI is a second source for
1097 some of them. Compatible models include:
1099 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1100 pca9670, pca9672, pca9674, pca9674a,
1103 16 bits: pcf8575, pcf8575c, pca8575,
1104 pca9671, pca9673, pca9675
1106 Your board setup code will need to declare the expanders in
1107 use, and assign numbers to the GPIOs they expose. Those GPIOs
1108 can then be used from drivers and other kernel code, just like
1109 other GPIOs, but only accessible from task contexts.
1111 This driver provides an in-kernel interface to those GPIOs using
1112 platform-neutral GPIO calls.
1114 config GPIO_TPIC2810
1115 tristate "TPIC2810 8-Bit I2C GPO expander"
1117 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1119 To compile this driver as a module, choose M here: the module will
1120 be called gpio-tpic2810.
1123 tristate "Technologic Systems FPGA I2C GPIO"
1124 depends on SOC_IMX6 || COMPILE_TEST
1127 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1128 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1132 menu "MFD GPIO expanders"
1135 tristate "GPIO Support for ADP5520 PMIC"
1136 depends on PMIC_ADP5520
1138 This option enables support for on-chip GPIO found
1139 on Analog Devices ADP5520 PMICs.
1141 config GPIO_ALTERA_A10SR
1142 tristate "Altera Arria10 System Resource GPIO"
1143 depends on MFD_ALTERA_A10SR
1145 Driver for Arria10 Development Kit GPIO expansion which
1146 includes reads of pushbuttons and DIP switches as well
1150 tristate "Wolfson Microelectronics Arizona class devices"
1151 depends on MFD_ARIZONA
1153 Support for GPIOs on Wolfson Arizona class devices.
1156 tristate "ROHM BD71815 PMIC GPIO support"
1157 depends on MFD_ROHM_BD71828
1159 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1160 available on the ROHM PMIC.
1162 This driver can also be built as a module. If so, the module
1163 will be called gpio-bd71815.
1166 tristate "ROHM BD71828 GPIO support"
1167 depends on MFD_ROHM_BD71828
1169 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1170 available on the ROHM PMIC in total. The GPIOs are limited to
1171 outputs only and pins must be configured to GPIO outputs by
1172 OTP. Enable this only if you want to use these pins as outputs.
1174 This driver can also be built as a module. If so, the module
1175 will be called gpio-bd71828.
1177 config GPIO_BD9571MWV
1178 tristate "ROHM BD9571 GPIO support"
1179 depends on MFD_BD9571MWV
1181 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1182 available on the ROHM PMIC in total, both of which can also
1183 generate interrupts.
1185 This driver can also be built as a module. If so, the module
1186 will be called gpio-bd9571mwv.
1188 config GPIO_CRYSTAL_COVE
1189 tristate "GPIO support for Crystal Cove PMIC"
1190 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1191 select GPIOLIB_IRQCHIP
1193 Support for GPIO pins on Crystal Cove PMIC.
1195 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1198 This driver can also be built as a module. If so, the module will be
1199 called gpio-crystalcove.
1202 tristate "AMD CS5535/CS5536 GPIO support"
1203 depends on X86 || MIPS || COMPILE_TEST
1204 depends on MFD_CS5535
1206 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1207 can be used for quite a number of things. The CS5535/6 is found on
1208 AMD Geode and Lemote Yeeloong devices.
1213 tristate "Dialog DA9052 GPIO"
1214 depends on PMIC_DA9052
1216 Say yes here to enable the GPIO driver for the DA9052 chip.
1219 tristate "Dialog Semiconductor DA9055 GPIO"
1220 depends on MFD_DA9055
1222 Say yes here to enable the GPIO driver for the DA9055 chip.
1224 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1225 be controlled by this driver.
1227 If driver is built as a module it will be called gpio-da9055.
1230 tristate "Diolan DLN2 GPIO support"
1232 select GPIOLIB_IRQCHIP
1235 Select this option to enable GPIO driver for the Diolan DLN2
1238 This driver can also be built as a module. If so, the module
1239 will be called gpio-dln2.
1242 bool "HTC EGPIO support"
1245 This driver supports the CPLD egpio chip present on
1246 several HTC phones. It provides basic support for input
1247 pins, output pins, and IRQs.
1249 config GPIO_JANZ_TTL
1250 tristate "Janz VMOD-TTL Digital IO Module"
1251 depends on MFD_JANZ_CMODIO
1253 This enables support for the Janz VMOD-TTL Digital IO module.
1254 This driver provides support for driving the pins in output
1255 mode only. Input mode is not supported.
1258 tristate "Kontron ETX / COMexpress GPIO"
1259 depends on MFD_KEMPLD
1261 This enables support for the PLD GPIO interface on some Kontron ETX
1262 and COMexpress (ETXexpress) modules.
1264 This driver can also be built as a module. If so, the module will be
1268 tristate "TI/National Semiconductor LP3943 GPIO expander"
1269 depends on MFD_LP3943
1271 GPIO driver for LP3943 MFD.
1272 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1273 Open drain outputs are required for this usage.
1276 tristate "TI LP873X GPO"
1277 depends on MFD_TI_LP873X
1279 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1282 This driver can also be built as a module. If so, the module will be
1286 tristate "TI LP87565 GPIO"
1287 depends on MFD_TI_LP87565
1289 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1292 This driver can also be built as a module. If so, the module will be
1293 called gpio-lp87565.
1296 tristate "Cirrus Logic Madera class codecs"
1297 depends on PINCTRL_MADERA
1299 Support for GPIOs on Cirrus Logic Madera class codecs.
1301 config GPIO_MAX77620
1302 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1303 depends on MFD_MAX77620
1304 select GPIOLIB_IRQCHIP
1306 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1307 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1308 driver also provides interrupt support for each of the GPIOs.
1309 Say yes here to enable the max77620 to be used as GPIO controller.
1311 config GPIO_MAX77650
1312 tristate "Maxim MAX77650/77651 GPIO support"
1313 depends on MFD_MAX77650
1315 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1316 These chips have a single pin that can be configured as GPIO.
1319 bool "TI PALMAS series PMICs GPIO"
1320 depends on MFD_PALMAS
1322 Select this option to enable GPIO driver for the TI PALMAS
1326 bool "RICOH RC5T583 GPIO"
1327 depends on MFD_RC5T583
1329 Select this option to enable GPIO driver for the Ricoh RC5T583
1331 This driver provides the support for driving/reading the GPIO pins
1332 of RC5T583 device through standard GPIO library.
1334 config GPIO_SL28CPLD
1335 tristate "Kontron sl28cpld GPIO support"
1336 depends on MFD_SL28CPLD || COMPILE_TEST
1338 select GPIOLIB_IRQCHIP
1341 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1343 This driver can also be built as a module. If so, the module will be
1344 called gpio-sl28cpld.
1348 depends on MFD_STMPE
1350 select GPIOLIB_IRQCHIP
1352 This enables support for the GPIOs found on the STMPE I/O
1356 bool "TC3589X GPIOs"
1357 depends on MFD_TC3589X
1359 select GPIOLIB_IRQCHIP
1361 This enables support for the GPIOs found on the TC3589X
1364 config GPIO_TIMBERDALE
1365 bool "Support for timberdale GPIO IP"
1366 depends on MFD_TIMBERDALE
1368 Add support for the GPIO IP in the timberdale FPGA.
1370 config GPIO_TN48M_CPLD
1371 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1372 depends on MFD_TN48M_CPLD
1375 This enables support for the GPIOs found on the Delta
1376 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1377 they are input-only or output-only type.
1379 This driver can also be built as a module. If so, the
1380 module will be called gpio-tn48m.
1382 config GPIO_TPS65086
1383 tristate "TI TPS65086 GPO"
1384 depends on MFD_TPS65086
1386 This driver supports the GPO on TI TPS65086x PMICs.
1388 config GPIO_TPS65218
1389 tristate "TPS65218 GPIO"
1390 depends on MFD_TPS65218
1392 Select this option to enable GPIO driver for the TPS65218
1395 config GPIO_TPS6586X
1396 bool "TPS6586X GPIO"
1397 depends on MFD_TPS6586X
1399 Select this option to enable GPIO driver for the TPS6586X
1402 config GPIO_TPS65910
1403 bool "TPS65910 GPIO"
1404 depends on MFD_TPS65910
1406 Select this option to enable GPIO driver for the TPS65910
1409 config GPIO_TPS65912
1410 tristate "TI TPS65912 GPIO"
1411 depends on MFD_TPS65912
1413 This driver supports TPS65912 GPIO chip.
1415 config GPIO_TPS68470
1416 tristate "TPS68470 GPIO"
1417 depends on INTEL_SKL_INT3472
1419 Select this option to enable GPIO driver for the TPS68470
1421 There are 7 GPIOs and few sensor-related GPIOs supported
1422 by the TPS68470. While the 7 GPIOs can be configured as
1423 input or output as appropriate, the sensor related GPIOs
1424 are "output only" GPIOs.
1427 tristate "TQ-Systems QTMX86 GPIO"
1428 depends on MFD_TQMX86 || COMPILE_TEST
1429 depends on HAS_IOPORT_MAP
1430 select GPIOLIB_IRQCHIP
1432 This driver supports GPIO on the TQMX86 IO controller.
1435 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1436 depends on TWL4030_CORE
1438 Say yes here to access the GPIO signals of various multi-function
1439 power management chips from Texas Instruments.
1442 tristate "TWL6040 GPO"
1443 depends on TWL6040_CORE
1445 Say yes here to access the GPO signals of twl6040
1446 audio chip from Texas Instruments.
1449 tristate "Philips UCB1400 GPIO"
1450 depends on UCB1400_CORE
1452 This enables support for the Philips UCB1400 GPIO pins.
1453 The UCB1400 is an AC97 audio codec.
1455 config GPIO_WHISKEY_COVE
1456 tristate "GPIO support for Whiskey Cove PMIC"
1457 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1458 select GPIOLIB_IRQCHIP
1460 Support for GPIO pins on Whiskey Cove PMIC.
1462 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1465 This driver can also be built as a module. If so, the module will be
1469 tristate "WM831x GPIOs"
1470 depends on MFD_WM831X
1472 Say yes here to access the GPIO signals of WM831x power management
1473 chips from Wolfson Microelectronics.
1476 tristate "WM8350 GPIOs"
1477 depends on MFD_WM8350
1479 Say yes here to access the GPIO signals of WM8350 power management
1480 chips from Wolfson Microelectronics.
1483 tristate "WM8994 GPIOs"
1484 depends on MFD_WM8994
1486 Say yes here to access the GPIO signals of WM8994 audio hub
1487 CODECs from Wolfson Microelectronics.
1491 menu "PCI GPIO expanders"
1495 tristate "AMD 8111 GPIO driver"
1496 depends on X86 || COMPILE_TEST
1497 depends on HAS_IOPORT_MAP
1499 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1501 Note that usually system firmware/ACPI handles GPIO pins on their
1502 own and users might easily break their systems with uncareful usage
1508 tristate "BT8XX GPIO abuser"
1509 depends on VIDEO_BT848=n
1511 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1512 as a cheap PCI GPIO card.
1514 This chip can be found on Miro, Hauppauge and STB TV-cards.
1516 The card needs to be physically altered for using it as a
1517 GPIO card. For more information on how to build a GPIO card
1518 from a BT8xx TV card, see the documentation file at
1519 Documentation/driver-api/gpio/bt8xxgpio.rst
1523 config GPIO_MERRIFIELD
1524 tristate "Intel Merrifield GPIO support"
1525 depends on X86_INTEL_MID
1526 select GPIOLIB_IRQCHIP
1528 Say Y here to support Intel Merrifield GPIO.
1531 tristate "Mellanox BlueField SoC GPIO"
1532 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1535 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1538 tristate "Mellanox BlueField 2 SoC GPIO"
1539 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1542 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1545 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1546 depends on X86 || COMPILE_TEST
1547 select GENERIC_IRQ_CHIP
1549 ML7213 is companion chip for Intel Atom E6xx series.
1550 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1551 Hub) which is for IVI (In-Vehicle Infotainment) use.
1552 This driver can access the IOH's GPIO device.
1555 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1556 depends on X86_32 || MIPS || COMPILE_TEST
1557 select GENERIC_IRQ_CHIP
1559 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1560 which is an IOH (Input/Output Hub) for x86 embedded processor.
1561 This driver can access PCH GPIO device.
1563 This driver also can be used for LAPIS Semiconductor IOH (Input/
1564 Output Hub), ML7223 and ML7831.
1565 ML7223 IOH is for MP (Media Phone) use.
1566 ML7831 IOH is for general purpose use.
1567 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1568 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1570 config GPIO_PCI_IDIO_16
1571 tristate "ACCES PCI-IDIO-16 GPIO support"
1572 select GPIOLIB_IRQCHIP
1574 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1575 generated when any of the inputs change state (low to high or high to
1576 low). Input filter control is not supported by this driver, and the
1577 input filters are deactivated by this driver.
1579 config GPIO_PCIE_IDIO_24
1580 tristate "ACCES PCIe-IDIO-24 GPIO support"
1581 select GPIOLIB_IRQCHIP
1583 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1584 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1585 when any of the inputs change state (low to high or high to low).
1586 Input filter control is not supported by this driver, and the input
1587 filters are deactivated by this driver.
1590 tristate "RDC R-321x GPIO support"
1594 Support for the RDC R321x SoC GPIOs over southbridge
1595 PCI configuration space.
1597 config GPIO_SODAVILLE
1598 bool "Intel Sodaville GPIO support"
1599 depends on X86 && OF
1601 select GENERIC_IRQ_CHIP
1603 Say Y here to support Intel Sodaville GPIO.
1607 menu "SPI GPIO expanders"
1608 depends on SPI_MASTER
1611 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1614 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1615 shift registers. This driver can be used to provide access
1616 to more GPIO outputs.
1618 config GPIO_MAX3191X
1619 tristate "Maxim MAX3191x industrial serializer"
1622 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1623 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1624 chip to make 8 digital 24V inputs available via SPI. Supports
1625 CRC checksums to guard against electromagnetic interference,
1626 as well as undervoltage and overtemperature detection.
1629 tristate "Maxim MAX7301 GPIO expander"
1632 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1635 tristate "Freescale MC33880 high-side/low-side switch"
1637 SPI driver for Freescale MC33880 high-side/low-side switch.
1638 This provides GPIO interface supporting inputs and outputs.
1641 tristate "Generic parallel-in/serial-out shift register"
1643 GPIO driver for SPI compatible parallel-in/serial-out shift
1644 registers. These are input only devices.
1647 tristate "EXAR XRA1403 16-bit GPIO expander"
1650 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1653 tristate "Turris Mox Moxtet bus GPIO expander"
1656 Say yes here if you are building for the Turris Mox router.
1657 This is the driver needed for configuring the GPIOs via the Moxtet
1658 bus. For example the Mox module with SFP cage needs this driver
1659 so that phylink can use corresponding GPIOs.
1663 menu "USB GPIO expanders"
1666 config GPIO_VIPERBOARD
1667 tristate "Viperboard GPIO a & b support"
1668 depends on MFD_VIPERBOARD
1670 Say yes here to access the GPIO signals of Nano River
1671 Technologies Viperboard. There are two GPIO chips on the
1672 board: gpioa and gpiob.
1673 See viperboard API specification and Nano
1674 River Tech's viperboard.h for detailed meaning
1675 of the module parameters.
1679 menu "Virtual GPIO drivers"
1681 config GPIO_AGGREGATOR
1682 tristate "GPIO Aggregator"
1684 Say yes here to enable the GPIO Aggregator, which provides a way to
1685 aggregate existing GPIO lines into a new virtual GPIO chip.
1686 This can serve the following purposes:
1687 - Assign permissions for a collection of GPIO lines to a user,
1688 - Export a collection of GPIO lines to a virtual machine,
1689 - Provide a generic driver for a GPIO-operated device in an
1690 industrial control context, to be operated from userspace using
1691 the GPIO chardev interface.
1694 tristate "GPIO Testing Driver"
1697 This enables GPIO Testing driver, which provides a way to test GPIO
1698 subsystem through sysfs (or char device) and debugfs.
1699 User could use it through the script in
1700 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1704 tristate "VirtIO GPIO support"
1706 select GPIOLIB_IRQCHIP
1708 Say Y here to enable guest support for virtio-based GPIO controllers.
1710 These virtual GPIOs can be routed to real GPIOs or attached to
1711 simulators on the host (like QEMU).
1714 tristate "GPIO Simulator Module"
1718 This enables the GPIO simulator - a configfs-based GPIO testing