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).
349 tristate "Intel IOP GPIO"
350 depends on ARCH_IOP32X || COMPILE_TEST
353 Say yes here to support the GPIO functionality of a number of Intel
354 IOP32X or IOP33X series of chips.
359 bool "Intel IXP4xx GPIO"
360 depends on ARCH_IXP4XX
363 select GPIOLIB_IRQCHIP
364 select IRQ_DOMAIN_HIERARCHY
366 Say yes here to support the GPIO functionality of a number of Intel
367 IXP4xx series of chips.
372 tristate "Xylon LogiCVC GPIO support"
373 depends on MFD_SYSCON && OF
375 Say yes here to support GPIO functionality of the Xylon LogiCVC
376 programmable logic block.
379 bool "Loongson-2/3 GPIO support"
380 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
382 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
385 tristate "NXP LPC18XX/43XX GPIO support"
386 default y if ARCH_LPC18XX
387 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
388 select IRQ_DOMAIN_HIERARCHY
390 Select this option to enable GPIO driver for
391 NXP LPC18XX/43XX devices.
394 tristate "NXP LPC32XX GPIO support"
395 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
397 Select this option to enable GPIO driver for
401 tristate "GPIO support for Fujitsu MB86S7x Platforms"
403 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
406 tristate "MEN 16Z127 GPIO support"
410 Say yes here to support the MEN 16Z127 GPIO Controller.
412 config GPIO_MM_LANTIQ
413 bool "Lantiq Memory mapped GPIOs"
414 depends on LANTIQ && SOC_XWAY
416 This enables support for memory mapped GPIOs on the External Bus Unit
417 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
418 created by attaching a 16-bit latch to the bus.
422 depends on PPC_MPC52xx
425 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
426 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
427 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
432 Say Y here if you're going to use hardware that connects to the
433 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
436 bool "Mediatek MT7621 GPIO Support"
437 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
440 select GPIOLIB_IRQCHIP
442 Say yes here to support the Mediatek MT7621 SoC GPIO device.
446 depends on PLAT_ORION || ARCH_MVEBU
448 select GENERIC_IRQ_CHIP
452 tristate "i.MX GPIO support"
453 depends on ARCH_MXC || COMPILE_TEST
455 select GENERIC_IRQ_CHIP
458 bool "Freescale MXS GPIO support" if COMPILE_TEST
459 depends on ARCH_MXS || COMPILE_TEST
460 default y if ARCH_MXS
462 select GENERIC_IRQ_CHIP
465 tristate "Cavium OCTEON GPIO"
466 depends on CAVIUM_OCTEON_SOC
469 Say yes here to support the on-chip GPIO lines on the OCTEON
473 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
474 default y if ARCH_OMAP
476 select GENERIC_IRQ_CHIP
477 select GPIOLIB_IRQCHIP
479 Say yes here to enable GPIO support for TI OMAP SoCs.
482 tristate "PrimeCell PL061 GPIO support"
485 select GPIOLIB_IRQCHIP
487 Say yes here to support the PrimeCell PL061 GPIO device.
489 config GPIO_PMIC_EIC_SPRD
490 tristate "Spreadtrum PMIC EIC support"
491 depends on MFD_SC27XX_PMIC || COMPILE_TEST
493 select GPIOLIB_IRQCHIP
495 Say yes here to support Spreadtrum PMIC EIC device.
498 bool "PXA GPIO support"
499 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
501 Say yes here to support the PXA GPIO device.
504 tristate "Renesas R-Car and RZ/G GPIO support"
505 depends on ARCH_RENESAS || COMPILE_TEST
506 select GPIOLIB_IRQCHIP
508 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
511 bool "RDA Micro GPIO controller support"
512 depends on ARCH_RDA || COMPILE_TEST
515 select GPIOLIB_IRQCHIP
517 Say Y here to support RDA Micro GPIO controller.
519 config GPIO_REALTEK_OTTO
520 tristate "Realtek Otto GPIO support"
521 depends on MACH_REALTEK_RTL
522 default MACH_REALTEK_RTL
524 select GPIOLIB_IRQCHIP
526 The GPIO controller on the Otto MIPS platform supports up to two
527 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
528 are grouped in four 8-bit wide ports.
530 When built as a module, the module will be called realtek_otto_gpio.
535 A 32-bit single register GPIO fixed in/out implementation. This
536 can be used to represent any register as a set of GPIO signals.
539 tristate "Rockchip GPIO support"
540 depends on ARCH_ROCKCHIP || COMPILE_TEST
541 select GENERIC_IRQ_CHIP
542 select GPIOLIB_IRQCHIP
543 default ARCH_ROCKCHIP
545 Say yes here to support GPIO on Rockchip SoCs.
547 config GPIO_SAMA5D2_PIOBU
548 tristate "SAMA5D2 PIOBU GPIO support"
549 depends on MFD_SYSCON
551 depends on ARCH_AT91 || COMPILE_TEST
554 Say yes here to use the PIOBU pins as GPIOs.
556 PIOBU pins on the SAMA5D2 can be used as GPIOs.
557 The difference from regular GPIOs is that they
558 maintain their value during backup/self-refresh.
561 bool "SiFive GPIO support"
563 select IRQ_DOMAIN_HIERARCHY
565 select GPIOLIB_IRQCHIP
568 Say yes here to support the GPIO device on SiFive SoCs.
571 tristate "SIOX GPIO support"
573 select GPIOLIB_IRQCHIP
575 Say yes here to support SIOX I/O devices. These are units connected
576 via a SIOX bus and have a number of fixed-direction I/O lines.
578 config GPIO_SNPS_CREG
579 bool "Synopsys GPIO via CREG (Control REGisters) driver"
580 depends on ARC || COMPILE_TEST
583 This driver supports GPIOs via CREG on various Synopsys SoCs.
584 This is a single-register MMIO GPIO driver for complex cases
585 where only several fields in register belong to GPIO lines and
586 each GPIO line owns a field with different length and on/off value.
588 config GPIO_SPEAR_SPICS
589 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
590 depends on PLAT_SPEAR
591 select GENERIC_IRQ_CHIP
593 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
596 tristate "Spreadtrum GPIO support"
597 depends on ARCH_SPRD || COMPILE_TEST
599 select GPIOLIB_IRQCHIP
601 Say yes here to support Spreadtrum GPIO device.
604 bool "STA2x11/ConneXt GPIO support"
605 depends on MFD_STA2X11
606 select GENERIC_IRQ_CHIP
608 Say yes here to support the STA2x11/ConneXt GPIO device.
609 The GPIO module has 128 GPIO pins with alternate functions.
612 bool "XWAY STP GPIOs"
613 depends on SOC_XWAY || COMPILE_TEST
616 This enables support for the Serial To Parallel (STP) unit found on
617 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
618 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
619 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
623 tristate "GPIO based on SYSCON"
624 depends on MFD_SYSCON && OF
626 Say yes here to support GPIO functionality though SYSCON driver.
631 select GENERIC_IRQ_CHIP
635 tristate "NVIDIA Tegra GPIO support"
637 depends on ARCH_TEGRA || COMPILE_TEST
639 select GPIOLIB_IRQCHIP
640 select IRQ_DOMAIN_HIERARCHY
642 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
645 tristate "NVIDIA Tegra186 GPIO support"
646 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
647 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
649 select GPIOLIB_IRQCHIP
650 select IRQ_DOMAIN_HIERARCHY
652 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
655 tristate "TS-4800 DIO blocks and compatibles"
657 depends on SOC_IMX51 || COMPILE_TEST
660 This driver support TS-4800 FPGA GPIO controllers.
663 tristate "Cavium ThunderX/OCTEON-TX GPIO"
664 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
666 select GPIOLIB_IRQCHIP
667 select IRQ_DOMAIN_HIERARCHY
668 select IRQ_FASTEOI_HIERARCHY_HANDLERS
670 Say yes here to support the on-chip GPIO lines on the ThunderX
671 and OCTEON-TX families of SoCs.
674 tristate "UniPhier GPIO support"
675 depends on ARCH_UNIPHIER || COMPILE_TEST
677 select IRQ_DOMAIN_HIERARCHY
679 Say yes here to support UniPhier GPIOs.
684 select GPIOLIB_IRQCHIP
686 Say yes here to support i.MX or Vybrid vf610 GPIOs.
689 tristate "Toshiba Visconti GPIO support"
690 depends on ARCH_VISCONTI || COMPILE_TEST
692 select GPIOLIB_IRQCHIP
694 select IRQ_DOMAIN_HIERARCHY
696 Say yes here to support GPIO on Tohisba Visconti.
699 tristate "VIA VX855/VX875 GPIO"
700 depends on (X86 || COMPILE_TEST) && PCI
704 Support access to the VX855/VX875 GPIO lines through the GPIO library.
706 This driver provides common support for accessing the device.
707 Additional drivers must be enabled in order to use the
708 functionality of the device.
711 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
712 depends on MFD_WCD934X && OF_GPIO
714 This driver is to support GPIO block found on the Qualcomm Technologies
715 Inc WCD9340/WCD9341 Audio Codec.
718 bool "APM X-Gene GPIO controller support"
719 depends on ARM64 && OF_GPIO
721 This driver is to support the GPIO block within the APM X-Gene SoC
722 platform's generic flash controller. The GPIO pins are muxed with
723 the generic flash controller's address and data pins. Say yes
724 here to enable the GFC GPIO functionality.
727 tristate "APM X-Gene GPIO standby controller support"
728 depends on (ARCH_XGENE || COMPILE_TEST)
730 select GPIOLIB_IRQCHIP
731 select IRQ_DOMAIN_HIERARCHY
733 This driver supports the GPIO block within the APM X-Gene
734 Standby Domain. Say yes here to enable the GPIO functionality.
737 tristate "Xilinx GPIO support"
738 select GPIOLIB_IRQCHIP
741 Say yes here to support the Xilinx FPGA GPIO device.
744 tristate "Cavium ThunderX2 GPIO support"
745 depends on ARCH_THUNDER2 || COMPILE_TEST
746 select GPIOLIB_IRQCHIP
748 This driver provides support for GPIO interface on Cavium's ThunderX2
749 CN99XX SoCs (Originally from Netlogic XLP).
754 bool "Xtensa GPIO32 support"
756 depends on HAVE_XTENSA_GPIO32
759 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
760 and EXPSTATE (output) ports.
763 bool "LSI ZEVIO SoC memory mapped GPIOs"
764 depends on ARM && OF_GPIO
766 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
769 tristate "Xilinx Zynq GPIO support"
770 depends on ARCH_ZYNQ || ARCH_ZYNQMP
771 select GPIOLIB_IRQCHIP
773 Say yes here to support Xilinx Zynq GPIO controller.
775 config GPIO_ZYNQMP_MODEPIN
776 tristate "ZynqMP ps-mode pin GPIO configuration driver"
777 depends on ZYNQMP_FIRMWARE
778 default ZYNQMP_FIRMWARE
780 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
783 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
784 is 4-bits boot mode pins. It sets and gets the status of
785 the ps-mode pin. Every pin can be configured as input/output.
787 config GPIO_LOONGSON1
788 tristate "Loongson1 GPIO support"
789 depends on MACH_LOONGSON32
792 Say Y or M here to support GPIO on Loongson1 SoCs.
795 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
797 This option enables driver for GPIO on AMD's Fusion Controller Hub,
798 as found on G-series SOCs (e.g. GX-412TC).
800 Note: This driver doesn't register itself automatically, as it
801 needs to be provided with platform-specific configuration.
802 (See e.g. CONFIG_PCENGINES_APU2.)
805 bool "MStar MSC313 GPIO support"
806 depends on ARCH_MSTARV7
808 select GPIOLIB_IRQCHIP
809 select IRQ_DOMAIN_HIERARCHY
811 Say Y here to support the main GPIO block on MStar/SigmaStar
815 tristate "IDT 79RC3243X GPIO support"
816 depends on MIKROTIK_RB532 || COMPILE_TEST
818 select GPIOLIB_IRQCHIP
820 Select this option to enable GPIO driver for
821 IDT 79RC3243X-based devices like Mikrotik RB532.
823 To compile this driver as a module, choose M here: the module will
824 be called gpio-idt3243x.
828 menu "Port-mapped I/O GPIO drivers"
829 depends on X86 # Unconditional I/O space access
834 Enables support for the i8255 interface library functions. The i8255
835 interface library provides functions to facilitate communication with
836 interfaces compatible with the venerable Intel 8255 Programmable
837 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
838 in the early 1970s but compatible interfaces are nowadays typically
839 found embedded in larger VLSI processing chips and FPGA components.
841 If built as a module its name will be gpio-i8255.
843 config GPIO_104_DIO_48E
844 tristate "ACCES 104-DIO-48E GPIO support"
847 select GPIOLIB_IRQCHIP
850 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
851 104-DIO-24E). The base port addresses for the devices may be
852 configured via the base module parameter. The interrupt line numbers
853 for the devices may be configured via the irq module parameter.
855 config GPIO_104_IDIO_16
856 tristate "ACCES 104-IDIO-16 GPIO support"
859 select GPIOLIB_IRQCHIP
861 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
862 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
863 base port addresses for the devices may be configured via the base
864 module parameter. The interrupt line numbers for the devices may be
865 configured via the irq module parameter.
867 config GPIO_104_IDI_48
868 tristate "ACCES 104-IDI-48 GPIO support"
871 select GPIOLIB_IRQCHIP
874 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
875 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
876 the devices may be configured via the base module parameter. The
877 interrupt line numbers for the devices may be configured via the irq
881 tristate "Fintek and Nuvoton Super-I/O GPIO support"
883 This option enables support for GPIOs found on Fintek Super-I/O
884 chips F71869, F71869A, F71882FG, F71889F and F81866.
885 As well as Nuvoton Super-I/O chip NCT6116D.
887 To compile this driver as a module, choose M here: the module will
888 be called f7188x-gpio.
891 tristate "Diamond Systems GPIO-MM GPIO support"
896 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
898 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
899 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
900 support for these 48 channels of digital I/O.
902 The base port addresses for the devices may be configured via the base
903 array module parameter.
906 tristate "IT87xx GPIO support"
908 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
910 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
911 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
914 To compile this driver as a module, choose M here: the module will
918 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
919 depends on (X86 || COMPILE_TEST) && ACPI
921 select GPIOLIB_IRQCHIP
923 Say yes here to support GPIO interface on Intel Poulsbo SCH,
924 Intel Tunnel Creek processor, Intel Centerton processor or
925 Intel Quark X1000 SoC.
927 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
928 powered by the core power rail and are turned off during sleep
929 modes (S3 and higher). The remaining four GPIOs are powered by
930 the Intel SCH suspend power supply. These GPIOs remain
931 active during S3. The suspend-powered GPIOs can be used to wake the
932 system from the Suspend-to-RAM state.
934 The Intel Tunnel Creek processor has 5 GPIOs powered by the
935 core power rail and 9 from suspend power supply.
937 The Intel Centerton processor has a total of 30 GPIO pins.
938 Twenty-one are powered by the core power rail and 9 from the
939 suspend power supply.
941 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
942 power well and 6 from the suspend power well.
945 tristate "SMSC SCH311x SuperI/O GPIO"
947 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
948 SCH3116 "Super I/O" chipsets.
950 To compile this driver as a module, choose M here: the module will
951 be called gpio-sch311x.
954 tristate "TS-5500 DIO blocks and compatibles"
955 depends on TS5500 || COMPILE_TEST
957 This driver supports Digital I/O exposed by pin blocks found on some
958 Technologic Systems platforms. It includes, but is not limited to, 3
959 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
963 tristate "Winbond Super I/O GPIO support"
966 This option enables support for GPIOs found on Winbond Super I/O
968 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
971 You will need to provide a module parameter "gpios", or a
972 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
973 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
975 To compile this driver as a module, choose M here: the module will
976 be called gpio-winbond.
979 tristate "WinSystems WS16C48 GPIO support"
981 select GPIOLIB_IRQCHIP
983 Enables GPIO support for the WinSystems WS16C48. The base port
984 addresses for the devices may be configured via the base module
985 parameter. The interrupt line numbers for the devices may be
986 configured via the irq module parameter.
990 menu "I2C GPIO expanders"
994 tristate "Avionic Design N-bit GPIO expander"
996 select GPIOLIB_IRQCHIP
998 This option enables support for N GPIOs found on Avionic Design
999 I2C GPIO expanders. The register space will be extended by powers
1000 of two, so the controller will need to accommodate for that. For
1001 example: if a controller provides 48 pins, 6 registers will be
1002 enough to represent all pins, but the driver will assume a
1003 register layout for 64 pins (8 registers).
1006 tristate "Gateworks PLD GPIO Expander"
1009 Say yes here to provide access to the Gateworks I2C PLD GPIO
1010 Expander. This is used at least on the Cambria GW2358-4.
1013 tristate "Maxim MAX7300 GPIO expander"
1016 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1019 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1021 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1022 Port Expanders. Each IO port on these chips has a fixed role of
1023 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1024 Input and Output (designed by 'P'). The combinations are listed
1027 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1028 max7322 (4I4O), max7323 (4P4O)
1030 16 bits: max7324 (8I8O), max7325 (8P8O),
1031 max7326 (4I12O), max7327 (4P12O)
1033 Board setup code must specify the model to use, and the start
1034 number for these GPIOs.
1036 config GPIO_MAX732X_IRQ
1037 bool "Interrupt controller support for MAX732x"
1038 depends on GPIO_MAX732X=y
1039 select GPIOLIB_IRQCHIP
1041 Say yes here to enable the max732x to be used as an interrupt
1042 controller. It requires the driver to be built in the kernel.
1045 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1048 Say yes here to provide access to several register-oriented
1049 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1052 4 bits: pca9536, pca9537
1054 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1055 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1057 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1062 40 bits: pca9505, pca9698
1064 config GPIO_PCA953X_IRQ
1065 bool "Interrupt controller support for PCA953x"
1066 depends on GPIO_PCA953X
1067 select GPIOLIB_IRQCHIP
1069 Say yes here to enable the pca953x to be used as an interrupt
1073 tristate "PCA9570 4-Bit I2C GPO expander"
1075 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1077 To compile this driver as a module, choose M here: the module will
1078 be called gpio-pca9570.
1081 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1082 select GPIOLIB_IRQCHIP
1085 Say yes here to provide access to most "quasi-bidirectional" I2C
1086 GPIO expanders used for additional digital outputs or inputs.
1087 Most of these parts are from NXP, though TI is a second source for
1088 some of them. Compatible models include:
1090 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1091 pca9670, pca9672, pca9674, pca9674a,
1094 16 bits: pcf8575, pcf8575c, pca8575,
1095 pca9671, pca9673, pca9675
1097 Your board setup code will need to declare the expanders in
1098 use, and assign numbers to the GPIOs they expose. Those GPIOs
1099 can then be used from drivers and other kernel code, just like
1100 other GPIOs, but only accessible from task contexts.
1102 This driver provides an in-kernel interface to those GPIOs using
1103 platform-neutral GPIO calls.
1105 config GPIO_TPIC2810
1106 tristate "TPIC2810 8-Bit I2C GPO expander"
1108 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1110 To compile this driver as a module, choose M here: the module will
1111 be called gpio-tpic2810.
1114 tristate "Technologic Systems FPGA I2C GPIO"
1115 depends on SOC_IMX6 || COMPILE_TEST
1118 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1119 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1123 menu "MFD GPIO expanders"
1126 tristate "GPIO Support for ADP5520 PMIC"
1127 depends on PMIC_ADP5520
1129 This option enables support for on-chip GPIO found
1130 on Analog Devices ADP5520 PMICs.
1132 config GPIO_ALTERA_A10SR
1133 tristate "Altera Arria10 System Resource GPIO"
1134 depends on MFD_ALTERA_A10SR
1136 Driver for Arria10 Development Kit GPIO expansion which
1137 includes reads of pushbuttons and DIP switches as well
1141 tristate "Wolfson Microelectronics Arizona class devices"
1142 depends on MFD_ARIZONA
1144 Support for GPIOs on Wolfson Arizona class devices.
1147 tristate "ROHM BD71815 PMIC GPIO support"
1148 depends on MFD_ROHM_BD71828
1150 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1151 available on the ROHM PMIC.
1153 This driver can also be built as a module. If so, the module
1154 will be called gpio-bd71815.
1157 tristate "ROHM BD71828 GPIO support"
1158 depends on MFD_ROHM_BD71828
1160 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1161 available on the ROHM PMIC in total. The GPIOs are limited to
1162 outputs only and pins must be configured to GPIO outputs by
1163 OTP. Enable this only if you want to use these pins as outputs.
1165 This driver can also be built as a module. If so, the module
1166 will be called gpio-bd71828.
1168 config GPIO_BD9571MWV
1169 tristate "ROHM BD9571 GPIO support"
1170 depends on MFD_BD9571MWV
1172 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1173 available on the ROHM PMIC in total, both of which can also
1174 generate interrupts.
1176 This driver can also be built as a module. If so, the module
1177 will be called gpio-bd9571mwv.
1179 config GPIO_CRYSTAL_COVE
1180 tristate "GPIO support for Crystal Cove PMIC"
1181 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1182 select GPIOLIB_IRQCHIP
1184 Support for GPIO pins on Crystal Cove PMIC.
1186 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1189 This driver can also be built as a module. If so, the module will be
1190 called gpio-crystalcove.
1193 tristate "AMD CS5535/CS5536 GPIO support"
1194 depends on X86 || MIPS || COMPILE_TEST
1195 depends on MFD_CS5535
1197 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1198 can be used for quite a number of things. The CS5535/6 is found on
1199 AMD Geode and Lemote Yeeloong devices.
1204 tristate "Dialog DA9052 GPIO"
1205 depends on PMIC_DA9052
1207 Say yes here to enable the GPIO driver for the DA9052 chip.
1210 tristate "Dialog Semiconductor DA9055 GPIO"
1211 depends on MFD_DA9055
1213 Say yes here to enable the GPIO driver for the DA9055 chip.
1215 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1216 be controlled by this driver.
1218 If driver is built as a module it will be called gpio-da9055.
1221 tristate "Diolan DLN2 GPIO support"
1223 select GPIOLIB_IRQCHIP
1226 Select this option to enable GPIO driver for the Diolan DLN2
1229 This driver can also be built as a module. If so, the module
1230 will be called gpio-dln2.
1233 bool "HTC EGPIO support"
1236 This driver supports the CPLD egpio chip present on
1237 several HTC phones. It provides basic support for input
1238 pins, output pins, and IRQs.
1240 config GPIO_JANZ_TTL
1241 tristate "Janz VMOD-TTL Digital IO Module"
1242 depends on MFD_JANZ_CMODIO
1244 This enables support for the Janz VMOD-TTL Digital IO module.
1245 This driver provides support for driving the pins in output
1246 mode only. Input mode is not supported.
1249 tristate "Kontron ETX / COMexpress GPIO"
1250 depends on MFD_KEMPLD
1252 This enables support for the PLD GPIO interface on some Kontron ETX
1253 and COMexpress (ETXexpress) modules.
1255 This driver can also be built as a module. If so, the module will be
1259 tristate "TI/National Semiconductor LP3943 GPIO expander"
1260 depends on MFD_LP3943
1262 GPIO driver for LP3943 MFD.
1263 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1264 Open drain outputs are required for this usage.
1267 tristate "TI LP873X GPO"
1268 depends on MFD_TI_LP873X
1270 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1273 This driver can also be built as a module. If so, the module will be
1277 tristate "TI LP87565 GPIO"
1278 depends on MFD_TI_LP87565
1280 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1283 This driver can also be built as a module. If so, the module will be
1284 called gpio-lp87565.
1287 tristate "Cirrus Logic Madera class codecs"
1288 depends on PINCTRL_MADERA
1290 Support for GPIOs on Cirrus Logic Madera class codecs.
1292 config GPIO_MAX77620
1293 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1294 depends on MFD_MAX77620
1295 select GPIOLIB_IRQCHIP
1297 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1298 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1299 driver also provides interrupt support for each of the GPIOs.
1300 Say yes here to enable the max77620 to be used as GPIO controller.
1302 config GPIO_MAX77650
1303 tristate "Maxim MAX77650/77651 GPIO support"
1304 depends on MFD_MAX77650
1306 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1307 These chips have a single pin that can be configured as GPIO.
1310 bool "TI PALMAS series PMICs GPIO"
1311 depends on MFD_PALMAS
1313 Select this option to enable GPIO driver for the TI PALMAS
1317 bool "RICOH RC5T583 GPIO"
1318 depends on MFD_RC5T583
1320 Select this option to enable GPIO driver for the Ricoh RC5T583
1322 This driver provides the support for driving/reading the GPIO pins
1323 of RC5T583 device through standard GPIO library.
1325 config GPIO_SL28CPLD
1326 tristate "Kontron sl28cpld GPIO support"
1327 depends on MFD_SL28CPLD || COMPILE_TEST
1329 select GPIOLIB_IRQCHIP
1332 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1334 This driver can also be built as a module. If so, the module will be
1335 called gpio-sl28cpld.
1339 depends on MFD_STMPE
1341 select GPIOLIB_IRQCHIP
1343 This enables support for the GPIOs found on the STMPE I/O
1347 bool "TC3589X GPIOs"
1348 depends on MFD_TC3589X
1350 select GPIOLIB_IRQCHIP
1352 This enables support for the GPIOs found on the TC3589X
1355 config GPIO_TIMBERDALE
1356 bool "Support for timberdale GPIO IP"
1357 depends on MFD_TIMBERDALE
1359 Add support for the GPIO IP in the timberdale FPGA.
1361 config GPIO_TN48M_CPLD
1362 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1363 depends on MFD_TN48M_CPLD
1366 This enables support for the GPIOs found on the Delta
1367 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1368 they are input-only or output-only type.
1370 This driver can also be built as a module. If so, the
1371 module will be called gpio-tn48m.
1373 config GPIO_TPS65086
1374 tristate "TI TPS65086 GPO"
1375 depends on MFD_TPS65086
1377 This driver supports the GPO on TI TPS65086x PMICs.
1379 config GPIO_TPS65218
1380 tristate "TPS65218 GPIO"
1381 depends on MFD_TPS65218
1383 Select this option to enable GPIO driver for the TPS65218
1386 config GPIO_TPS6586X
1387 bool "TPS6586X GPIO"
1388 depends on MFD_TPS6586X
1390 Select this option to enable GPIO driver for the TPS6586X
1393 config GPIO_TPS65910
1394 bool "TPS65910 GPIO"
1395 depends on MFD_TPS65910
1397 Select this option to enable GPIO driver for the TPS65910
1400 config GPIO_TPS65912
1401 tristate "TI TPS65912 GPIO"
1402 depends on MFD_TPS65912
1404 This driver supports TPS65912 GPIO chip.
1406 config GPIO_TPS68470
1407 tristate "TPS68470 GPIO"
1408 depends on INTEL_SKL_INT3472
1410 Select this option to enable GPIO driver for the TPS68470
1412 There are 7 GPIOs and few sensor-related GPIOs supported
1413 by the TPS68470. While the 7 GPIOs can be configured as
1414 input or output as appropriate, the sensor related GPIOs
1415 are "output only" GPIOs.
1418 tristate "TQ-Systems QTMX86 GPIO"
1419 depends on MFD_TQMX86 || COMPILE_TEST
1420 depends on HAS_IOPORT_MAP
1421 select GPIOLIB_IRQCHIP
1423 This driver supports GPIO on the TQMX86 IO controller.
1426 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1427 depends on TWL4030_CORE
1429 Say yes here to access the GPIO signals of various multi-function
1430 power management chips from Texas Instruments.
1433 tristate "TWL6040 GPO"
1434 depends on TWL6040_CORE
1436 Say yes here to access the GPO signals of twl6040
1437 audio chip from Texas Instruments.
1440 tristate "Philips UCB1400 GPIO"
1441 depends on UCB1400_CORE
1443 This enables support for the Philips UCB1400 GPIO pins.
1444 The UCB1400 is an AC97 audio codec.
1446 config GPIO_WHISKEY_COVE
1447 tristate "GPIO support for Whiskey Cove PMIC"
1448 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1449 select GPIOLIB_IRQCHIP
1451 Support for GPIO pins on Whiskey Cove PMIC.
1453 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1456 This driver can also be built as a module. If so, the module will be
1460 tristate "WM831x GPIOs"
1461 depends on MFD_WM831X
1463 Say yes here to access the GPIO signals of WM831x power management
1464 chips from Wolfson Microelectronics.
1467 tristate "WM8350 GPIOs"
1468 depends on MFD_WM8350
1470 Say yes here to access the GPIO signals of WM8350 power management
1471 chips from Wolfson Microelectronics.
1474 tristate "WM8994 GPIOs"
1475 depends on MFD_WM8994
1477 Say yes here to access the GPIO signals of WM8994 audio hub
1478 CODECs from Wolfson Microelectronics.
1482 menu "PCI GPIO expanders"
1486 tristate "AMD 8111 GPIO driver"
1487 depends on X86 || COMPILE_TEST
1488 depends on HAS_IOPORT_MAP
1490 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1492 Note that usually system firmware/ACPI handles GPIO pins on their
1493 own and users might easily break their systems with uncareful usage
1499 tristate "BT8XX GPIO abuser"
1500 depends on VIDEO_BT848=n
1502 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1503 as a cheap PCI GPIO card.
1505 This chip can be found on Miro, Hauppauge and STB TV-cards.
1507 The card needs to be physically altered for using it as a
1508 GPIO card. For more information on how to build a GPIO card
1509 from a BT8xx TV card, see the documentation file at
1510 Documentation/driver-api/gpio/bt8xxgpio.rst
1514 config GPIO_MERRIFIELD
1515 tristate "Intel Merrifield GPIO support"
1516 depends on X86_INTEL_MID
1517 select GPIOLIB_IRQCHIP
1519 Say Y here to support Intel Merrifield GPIO.
1522 tristate "Mellanox BlueField SoC GPIO"
1523 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1526 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1529 tristate "Mellanox BlueField 2 SoC GPIO"
1530 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1533 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1536 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1537 depends on X86 || COMPILE_TEST
1538 select GENERIC_IRQ_CHIP
1540 ML7213 is companion chip for Intel Atom E6xx series.
1541 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1542 Hub) which is for IVI (In-Vehicle Infotainment) use.
1543 This driver can access the IOH's GPIO device.
1546 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1547 depends on X86_32 || MIPS || COMPILE_TEST
1548 select GENERIC_IRQ_CHIP
1550 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1551 which is an IOH (Input/Output Hub) for x86 embedded processor.
1552 This driver can access PCH GPIO device.
1554 This driver also can be used for LAPIS Semiconductor IOH (Input/
1555 Output Hub), ML7223 and ML7831.
1556 ML7223 IOH is for MP (Media Phone) use.
1557 ML7831 IOH is for general purpose use.
1558 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1559 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1561 config GPIO_PCI_IDIO_16
1562 tristate "ACCES PCI-IDIO-16 GPIO support"
1563 select GPIOLIB_IRQCHIP
1565 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1566 generated when any of the inputs change state (low to high or high to
1567 low). Input filter control is not supported by this driver, and the
1568 input filters are deactivated by this driver.
1570 config GPIO_PCIE_IDIO_24
1571 tristate "ACCES PCIe-IDIO-24 GPIO support"
1572 select GPIOLIB_IRQCHIP
1574 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1575 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1576 when any of the inputs change state (low to high or high to low).
1577 Input filter control is not supported by this driver, and the input
1578 filters are deactivated by this driver.
1581 tristate "RDC R-321x GPIO support"
1585 Support for the RDC R321x SoC GPIOs over southbridge
1586 PCI configuration space.
1588 config GPIO_SODAVILLE
1589 bool "Intel Sodaville GPIO support"
1590 depends on X86 && OF
1592 select GENERIC_IRQ_CHIP
1594 Say Y here to support Intel Sodaville GPIO.
1598 menu "SPI GPIO expanders"
1599 depends on SPI_MASTER
1602 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1605 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1606 shift registers. This driver can be used to provide access
1607 to more GPIO outputs.
1609 config GPIO_MAX3191X
1610 tristate "Maxim MAX3191x industrial serializer"
1613 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1614 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1615 chip to make 8 digital 24V inputs available via SPI. Supports
1616 CRC checksums to guard against electromagnetic interference,
1617 as well as undervoltage and overtemperature detection.
1620 tristate "Maxim MAX7301 GPIO expander"
1623 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1626 tristate "Freescale MC33880 high-side/low-side switch"
1628 SPI driver for Freescale MC33880 high-side/low-side switch.
1629 This provides GPIO interface supporting inputs and outputs.
1632 tristate "Generic parallel-in/serial-out shift register"
1634 GPIO driver for SPI compatible parallel-in/serial-out shift
1635 registers. These are input only devices.
1638 tristate "EXAR XRA1403 16-bit GPIO expander"
1641 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1644 tristate "Turris Mox Moxtet bus GPIO expander"
1647 Say yes here if you are building for the Turris Mox router.
1648 This is the driver needed for configuring the GPIOs via the Moxtet
1649 bus. For example the Mox module with SFP cage needs this driver
1650 so that phylink can use corresponding GPIOs.
1654 menu "USB GPIO expanders"
1657 config GPIO_VIPERBOARD
1658 tristate "Viperboard GPIO a & b support"
1659 depends on MFD_VIPERBOARD
1661 Say yes here to access the GPIO signals of Nano River
1662 Technologies Viperboard. There are two GPIO chips on the
1663 board: gpioa and gpiob.
1664 See viperboard API specification and Nano
1665 River Tech's viperboard.h for detailed meaning
1666 of the module parameters.
1670 menu "Virtual GPIO drivers"
1672 config GPIO_AGGREGATOR
1673 tristate "GPIO Aggregator"
1675 Say yes here to enable the GPIO Aggregator, which provides a way to
1676 aggregate existing GPIO lines into a new virtual GPIO chip.
1677 This can serve the following purposes:
1678 - Assign permissions for a collection of GPIO lines to a user,
1679 - Export a collection of GPIO lines to a virtual machine,
1680 - Provide a generic driver for a GPIO-operated device in an
1681 industrial control context, to be operated from userspace using
1682 the GPIO chardev interface.
1685 tristate "GPIO Testing Driver"
1688 This enables GPIO Testing driver, which provides a way to test GPIO
1689 subsystem through sysfs (or char device) and debugfs.
1690 User could use it through the script in
1691 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1695 tristate "VirtIO GPIO support"
1697 select GPIOLIB_IRQCHIP
1699 Say Y here to enable guest support for virtio-based GPIO controllers.
1701 These virtual GPIOs can be routed to real GPIOs or attached to
1702 simulators on the host (like QEMU).
1705 tristate "GPIO Simulator Module"
1709 This enables the GPIO simulator - a configfs-based GPIO testing