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 bool "Broadcom Virt GPIO"
212 depends on OF_GPIO && RASPBERRYPI_FIRMWARE && (ARCH_BCM2835 || COMPILE_TEST)
214 Turn on virtual GPIO support for Broadcom BCM283X chips.
217 tristate "BRCMSTB GPIO support"
218 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
219 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
223 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
226 tristate "Cadence GPIO support"
229 select GPIOLIB_IRQCHIP
231 Say yes here to enable support for Cadence GPIO controller.
234 tristate "CLPS711X GPIO support"
235 depends on ARCH_CLPS711X || COMPILE_TEST
238 Say yes here to support GPIO on CLPS711X SoCs.
241 tristate "TI Davinci/Keystone GPIO support"
242 default y if ARCH_DAVINCI
243 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
245 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
248 tristate "Synopsys DesignWare APB GPIO driver"
250 select GPIOLIB_IRQCHIP
252 Say Y or M here to build support for the Synopsys DesignWare APB
256 tristate "Spreadtrum EIC support"
257 depends on ARCH_SPRD || COMPILE_TEST
259 select GPIOLIB_IRQCHIP
261 Say yes here to support Spreadtrum EIC device.
264 tristate "Emma Mobile GPIO"
265 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
267 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
270 tristate "Airoha GPIO support"
271 depends on ARCH_AIROHA
274 select GPIOLIB_IRQCHIP
276 Say Y or M here to support the GPIO controller block on the
277 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
281 depends on ARCH_EP93XX
283 select GPIOLIB_IRQCHIP
286 tristate "Support for GPIO pins on XR17V352/354/358"
287 depends on SERIAL_8250_EXAR
290 Selecting this option will enable handling of GPIO pins present
291 on Exar XR17V352/354/358 chips.
294 bool "GE FPGA based GPIO"
295 depends on GE_FPGA || COMPILE_TEST
298 Support for common GPIO functionality provided on some GE Single Board
301 This driver provides basic support (configure as input or output, read
302 and write pin state) for GPIO implemented in a number of GE single
305 config GPIO_FTGPIO010
306 bool "Faraday FTGPIO010 GPIO"
309 select GPIOLIB_IRQCHIP
310 default (ARCH_GEMINI || ARCH_MOXART)
312 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
313 Cortina systems Gemini platforms, Moxa ART and others.
315 config GPIO_GENERIC_PLATFORM
316 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
319 Say yes here to support basic platform_device memory-mapped GPIO controllers.
322 tristate "Aeroflex Gaisler GRGPIO support"
327 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
328 VHDL IP core library.
331 tristate "HiSilicon GPIO controller driver"
332 depends on ARM64 || COMPILE_TEST
334 select GPIOLIB_IRQCHIP
336 Say Y or M here to build support for the HiSilicon GPIO controller
338 This GPIO controller supports double-edge interrupt and multi-core
342 tristate "Nintendo Wii (Hollywood) GPIO"
345 select GPIOLIB_IRQCHIP
347 Select this to support the GPIO controller of the Nintendo Wii.
352 tristate "Intel ICH GPIO"
356 Say yes here to support the GPIO functionality of a number of Intel
357 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
358 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
359 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
368 bool "Intel IXP4xx GPIO"
369 depends on ARCH_IXP4XX
372 select GPIOLIB_IRQCHIP
373 select IRQ_DOMAIN_HIERARCHY
375 Say yes here to support the GPIO functionality of a number of Intel
376 IXP4xx series of chips.
381 tristate "Xylon LogiCVC GPIO support"
382 depends on MFD_SYSCON && OF
384 Say yes here to support GPIO functionality of the Xylon LogiCVC
385 programmable logic block.
388 bool "Loongson-2/3 GPIO support"
389 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
391 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
393 config GPIO_LOONGSON_64BIT
394 tristate "Loongson 64 bit GPIO support"
395 depends on LOONGARCH || COMPILE_TEST
399 Say yes here to support the GPIO functionality of a number of
400 Loongson series of chips. The Loongson GPIO controller supports
401 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
402 the remaining 56 are reused with other functions, with edge or
403 level triggered interrupts.
406 tristate "NXP LPC18XX/43XX GPIO support"
407 default y if ARCH_LPC18XX
408 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
409 select IRQ_DOMAIN_HIERARCHY
411 Select this option to enable GPIO driver for
412 NXP LPC18XX/43XX devices.
415 tristate "NXP LPC32XX GPIO support"
416 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
418 Select this option to enable GPIO driver for
422 tristate "GPIO support for Fujitsu MB86S7x Platforms"
424 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
427 tristate "MEN 16Z127 GPIO support"
431 Say yes here to support the MEN 16Z127 GPIO Controller.
433 config GPIO_MM_LANTIQ
434 bool "Lantiq Memory mapped GPIOs"
435 depends on LANTIQ && SOC_XWAY
436 select OF_GPIO_MM_GPIOCHIP
438 This enables support for memory mapped GPIOs on the External Bus Unit
439 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
440 created by attaching a 16-bit latch to the bus.
444 depends on PPC_MPC52xx
445 select OF_GPIO_MM_GPIOCHIP
448 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
449 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
450 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
455 Say Y here if you're going to use hardware that connects to the
456 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
459 bool "Mediatek MT7621 GPIO Support"
460 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
463 select GPIOLIB_IRQCHIP
465 Say yes here to support the Mediatek MT7621 SoC GPIO device.
469 depends on PLAT_ORION || ARCH_MVEBU
471 select GENERIC_IRQ_CHIP
475 tristate "i.MX GPIO support"
476 depends on ARCH_MXC || COMPILE_TEST
478 select GENERIC_IRQ_CHIP
481 bool "Freescale MXS GPIO support" if COMPILE_TEST
482 depends on ARCH_MXS || COMPILE_TEST
483 default y if ARCH_MXS
485 select GENERIC_IRQ_CHIP
488 tristate "Cavium OCTEON GPIO"
489 depends on CAVIUM_OCTEON_SOC
492 Say yes here to support the on-chip GPIO lines on the OCTEON
496 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
497 default y if ARCH_OMAP
499 select GENERIC_IRQ_CHIP
500 select GPIOLIB_IRQCHIP
502 Say yes here to enable GPIO support for TI OMAP SoCs.
505 tristate "PrimeCell PL061 GPIO support"
508 select GPIOLIB_IRQCHIP
510 Say yes here to support the PrimeCell PL061 GPIO device.
513 bool "PXA GPIO support"
514 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
516 Say yes here to support the PXA GPIO device.
519 tristate "Renesas R-Car and RZ/G GPIO support"
520 depends on ARCH_RENESAS || COMPILE_TEST
521 select GPIOLIB_IRQCHIP
523 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
526 bool "RDA Micro GPIO controller support"
527 depends on ARCH_RDA || COMPILE_TEST
530 select GPIOLIB_IRQCHIP
532 Say Y here to support RDA Micro GPIO controller.
534 config GPIO_REALTEK_OTTO
535 tristate "Realtek Otto GPIO support"
536 depends on MACH_REALTEK_RTL
537 default MACH_REALTEK_RTL
539 select GPIOLIB_IRQCHIP
541 The GPIO controller on the Otto MIPS platform supports up to two
542 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
543 are grouped in four 8-bit wide ports.
545 When built as a module, the module will be called realtek_otto_gpio.
550 A 32-bit single register GPIO fixed in/out implementation. This
551 can be used to represent any register as a set of GPIO signals.
554 tristate "Rockchip GPIO support"
555 depends on ARCH_ROCKCHIP || COMPILE_TEST
556 select GENERIC_IRQ_CHIP
557 select GPIOLIB_IRQCHIP
558 default ARCH_ROCKCHIP
560 Say yes here to support GPIO on Rockchip SoCs.
562 config GPIO_SAMA5D2_PIOBU
563 tristate "SAMA5D2 PIOBU GPIO support"
564 depends on MFD_SYSCON
566 depends on ARCH_AT91 || COMPILE_TEST
569 Say yes here to use the PIOBU pins as GPIOs.
571 PIOBU pins on the SAMA5D2 can be used as GPIOs.
572 The difference from regular GPIOs is that they
573 maintain their value during backup/self-refresh.
576 tristate "SiFive GPIO support"
578 select IRQ_DOMAIN_HIERARCHY
580 select GPIOLIB_IRQCHIP
583 Say yes here to support the GPIO device on SiFive SoCs.
586 tristate "SIOX GPIO support"
588 select GPIOLIB_IRQCHIP
590 Say yes here to support SIOX I/O devices. These are units connected
591 via a SIOX bus and have a number of fixed-direction I/O lines.
593 config GPIO_SNPS_CREG
594 bool "Synopsys GPIO via CREG (Control REGisters) driver"
595 depends on ARC || COMPILE_TEST
598 This driver supports GPIOs via CREG on various Synopsys SoCs.
599 This is a single-register MMIO GPIO driver for complex cases
600 where only several fields in register belong to GPIO lines and
601 each GPIO line owns a field with different length and on/off value.
603 config GPIO_SPEAR_SPICS
604 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
605 depends on PLAT_SPEAR
606 select GENERIC_IRQ_CHIP
608 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
611 tristate "Spreadtrum GPIO support"
612 depends on ARCH_SPRD || COMPILE_TEST
614 select GPIOLIB_IRQCHIP
616 Say yes here to support Spreadtrum GPIO device.
619 bool "XWAY STP GPIOs"
620 depends on SOC_XWAY || COMPILE_TEST
623 This enables support for the Serial To Parallel (STP) unit found on
624 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
625 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
626 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
630 tristate "GPIO based on SYSCON"
631 depends on MFD_SYSCON && OF
633 Say yes here to support GPIO functionality though SYSCON driver.
637 select GPIOLIB_IRQCHIP
639 GPIO support for Intel Tangier and compatible platforms.
644 If built as a module its name will be gpio-tangier.
649 select GENERIC_IRQ_CHIP
653 tristate "NVIDIA Tegra GPIO support"
655 depends on ARCH_TEGRA || COMPILE_TEST
657 select GPIOLIB_IRQCHIP
658 select IRQ_DOMAIN_HIERARCHY
660 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
663 tristate "NVIDIA Tegra186 GPIO support"
664 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
665 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
667 select GPIOLIB_IRQCHIP
668 select IRQ_DOMAIN_HIERARCHY
670 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
673 tristate "TS-4800 DIO blocks and compatibles"
675 depends on SOC_IMX51 || COMPILE_TEST
678 This driver support TS-4800 FPGA GPIO controllers.
681 tristate "Cavium ThunderX/OCTEON-TX GPIO"
682 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
684 select GPIOLIB_IRQCHIP
685 select IRQ_DOMAIN_HIERARCHY
686 select IRQ_FASTEOI_HIERARCHY_HANDLERS
688 Say yes here to support the on-chip GPIO lines on the ThunderX
689 and OCTEON-TX families of SoCs.
692 tristate "UniPhier GPIO support"
693 depends on ARCH_UNIPHIER || COMPILE_TEST
695 select IRQ_DOMAIN_HIERARCHY
697 Say yes here to support UniPhier GPIOs.
702 select GPIOLIB_IRQCHIP
704 Say yes here to support i.MX or Vybrid vf610 GPIOs.
707 tristate "Toshiba Visconti GPIO support"
708 depends on ARCH_VISCONTI || COMPILE_TEST
710 select GPIOLIB_IRQCHIP
712 select IRQ_DOMAIN_HIERARCHY
714 Say yes here to support GPIO on Tohisba Visconti.
717 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
718 depends on MFD_WCD934X && OF_GPIO
720 This driver is to support GPIO block found on the Qualcomm Technologies
721 Inc WCD9340/WCD9341 Audio Codec.
724 bool "APM X-Gene GPIO controller support"
725 depends on ARM64 && OF_GPIO
727 This driver is to support the GPIO block within the APM X-Gene SoC
728 platform's generic flash controller. The GPIO pins are muxed with
729 the generic flash controller's address and data pins. Say yes
730 here to enable the GFC GPIO functionality.
733 tristate "APM X-Gene GPIO standby controller support"
734 depends on (ARCH_XGENE || COMPILE_TEST)
736 select GPIOLIB_IRQCHIP
737 select IRQ_DOMAIN_HIERARCHY
739 This driver supports the GPIO block within the APM X-Gene
740 Standby Domain. Say yes here to enable the GPIO functionality.
743 tristate "Xilinx GPIO support"
744 select GPIOLIB_IRQCHIP
747 Say yes here to support the Xilinx FPGA GPIO device.
750 tristate "Cavium ThunderX2 GPIO support"
751 depends on ARCH_THUNDER2 || COMPILE_TEST
752 select GPIOLIB_IRQCHIP
754 This driver provides support for GPIO interface on Cavium's ThunderX2
755 CN99XX SoCs (Originally from Netlogic XLP).
760 bool "Xtensa GPIO32 support"
762 depends on HAVE_XTENSA_GPIO32
765 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
766 and EXPSTATE (output) ports.
769 bool "LSI ZEVIO SoC memory mapped GPIOs"
772 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
775 tristate "Xilinx Zynq GPIO support"
776 depends on ARCH_ZYNQ || ARCH_ZYNQMP
777 select GPIOLIB_IRQCHIP
779 Say yes here to support Xilinx Zynq GPIO controller.
781 config GPIO_ZYNQMP_MODEPIN
782 tristate "ZynqMP ps-mode pin GPIO configuration driver"
783 depends on ZYNQMP_FIRMWARE
784 default ZYNQMP_FIRMWARE
786 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
789 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
790 is 4-bits boot mode pins. It sets and gets the status of
791 the ps-mode pin. Every pin can be configured as input/output.
793 config GPIO_LOONGSON1
794 tristate "Loongson1 GPIO support"
795 depends on MACH_LOONGSON32
798 Say Y or M here to support GPIO on Loongson1 SoCs.
801 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
803 This option enables driver for GPIO on AMD's Fusion Controller Hub,
804 as found on G-series SOCs (e.g. GX-412TC).
806 Note: This driver doesn't register itself automatically, as it
807 needs to be provided with platform-specific configuration.
808 (See e.g. CONFIG_PCENGINES_APU2.)
811 bool "MStar MSC313 GPIO support"
812 depends on ARCH_MSTARV7
814 select GPIOLIB_IRQCHIP
815 select IRQ_DOMAIN_HIERARCHY
817 Say Y here to support the main GPIO block on MStar/SigmaStar
821 tristate "IDT 79RC3243X GPIO support"
822 depends on MIKROTIK_RB532 || COMPILE_TEST
824 select GPIOLIB_IRQCHIP
826 Select this option to enable GPIO driver for
827 IDT 79RC3243X-based devices like Mikrotik RB532.
829 To compile this driver as a module, choose M here: the module will
830 be called gpio-idt3243x.
834 menu "Port-mapped I/O GPIO drivers"
835 depends on X86 && HAS_IOPORT # I/O space access
838 tristate "VIA VX855/VX875 GPIO"
843 Support access to the VX855/VX875 GPIO lines through the GPIO library.
845 This driver provides common support for accessing the device.
846 Additional drivers must be enabled in order to use the
847 functionality of the device.
853 Enables support for the i8255 interface library functions. The i8255
854 interface library provides functions to facilitate communication with
855 interfaces compatible with the venerable Intel 8255 Programmable
856 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
857 in the early 1970s but compatible interfaces are nowadays typically
858 found embedded in larger VLSI processing chips and FPGA components.
860 If built as a module its name will be gpio-i8255.
862 config GPIO_104_DIO_48E
863 tristate "ACCES 104-DIO-48E GPIO support"
868 select GPIOLIB_IRQCHIP
872 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
873 104-DIO-24E). The base port addresses for the devices may be
874 configured via the base module parameter. The interrupt line numbers
875 for the devices may be configured via the irq module parameter.
877 config GPIO_104_IDIO_16
878 tristate "ACCES 104-IDIO-16 GPIO support"
884 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
885 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
886 base port addresses for the devices may be configured via the base
887 module parameter. The interrupt line numbers for the devices may be
888 configured via the irq module parameter.
890 config GPIO_104_IDI_48
891 tristate "ACCES 104-IDI-48 GPIO support"
896 select GPIOLIB_IRQCHIP
899 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
900 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
901 the devices may be configured via the base module parameter. The
902 interrupt line numbers for the devices may be configured via the irq
906 tristate "Fintek and Nuvoton Super-I/O GPIO support"
908 This option enables support for GPIOs found on Fintek Super-I/O
909 chips F71869, F71869A, F71882FG, F71889F and F81866.
910 As well as Nuvoton Super-I/O chip NCT6126D.
912 To compile this driver as a module, choose M here: the module will
913 be called f7188x-gpio.
916 tristate "Diamond Systems GPIO-MM GPIO support"
922 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
924 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
925 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
926 support for these 48 channels of digital I/O.
928 The base port addresses for the devices may be configured via the base
929 array module parameter.
932 tristate "IT87xx GPIO support"
934 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
936 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
937 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
940 To compile this driver as a module, choose M here: the module will
944 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
945 depends on (X86 || COMPILE_TEST) && ACPI
947 select GPIOLIB_IRQCHIP
949 Say yes here to support GPIO interface on Intel Poulsbo SCH,
950 Intel Tunnel Creek processor, Intel Centerton processor or
951 Intel Quark X1000 SoC.
953 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
954 powered by the core power rail and are turned off during sleep
955 modes (S3 and higher). The remaining four GPIOs are powered by
956 the Intel SCH suspend power supply. These GPIOs remain
957 active during S3. The suspend-powered GPIOs can be used to wake the
958 system from the Suspend-to-RAM state.
960 The Intel Tunnel Creek processor has 5 GPIOs powered by the
961 core power rail and 9 from suspend power supply.
963 The Intel Centerton processor has a total of 30 GPIO pins.
964 Twenty-one are powered by the core power rail and 9 from the
965 suspend power supply.
967 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
968 power well and 6 from the suspend power well.
971 tristate "SMSC SCH311x SuperI/O GPIO"
973 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
974 SCH3116 "Super I/O" chipsets.
976 To compile this driver as a module, choose M here: the module will
977 be called gpio-sch311x.
980 tristate "TS-5500 DIO blocks and compatibles"
981 depends on TS5500 || COMPILE_TEST
983 This driver supports Digital I/O exposed by pin blocks found on some
984 Technologic Systems platforms. It includes, but is not limited to, 3
985 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
989 tristate "Winbond Super I/O GPIO support"
992 This option enables support for GPIOs found on Winbond Super I/O
994 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
997 You will need to provide a module parameter "gpios", or a
998 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
999 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1001 To compile this driver as a module, choose M here: the module will
1002 be called gpio-winbond.
1005 tristate "WinSystems WS16C48 GPIO support"
1009 select GPIOLIB_IRQCHIP
1012 Enables GPIO support for the WinSystems WS16C48. The base port
1013 addresses for the devices may be configured via the base module
1014 parameter. The interrupt line numbers for the devices may be
1015 configured via the irq module parameter.
1019 menu "I2C GPIO expanders"
1023 tristate "Avionic Design N-bit GPIO expander"
1025 select GPIOLIB_IRQCHIP
1027 This option enables support for N GPIOs found on Avionic Design
1028 I2C GPIO expanders. The register space will be extended by powers
1029 of two, so the controller will need to accommodate for that. For
1030 example: if a controller provides 48 pins, 6 registers will be
1031 enough to represent all pins, but the driver will assume a
1032 register layout for 64 pins (8 registers).
1035 tristate "FXL6408 I2C GPIO expander"
1039 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1041 To compile this driver as a module, choose M here: the module will
1042 be called gpio-fxl6408.
1045 tristate "DS4520 I2C GPIO expander"
1049 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1050 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1052 To compile this driver as a module, choose M here: the module will
1053 be called gpio-ds4520.
1056 tristate "Gateworks PLD GPIO Expander"
1059 Say yes here to provide access to the Gateworks I2C PLD GPIO
1060 Expander. This is used at least on the Cambria GW2358-4.
1063 tristate "Maxim MAX7300 GPIO expander"
1066 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1069 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1071 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1072 Port Expanders. Each IO port on these chips has a fixed role of
1073 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1074 Input and Output (designed by 'P'). The combinations are listed
1077 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1078 max7322 (4I4O), max7323 (4P4O)
1080 16 bits: max7324 (8I8O), max7325 (8P8O),
1081 max7326 (4I12O), max7327 (4P12O)
1083 Board setup code must specify the model to use, and the start
1084 number for these GPIOs.
1086 config GPIO_MAX732X_IRQ
1087 bool "Interrupt controller support for MAX732x"
1088 depends on GPIO_MAX732X=y
1089 select GPIOLIB_IRQCHIP
1091 Say yes here to enable the max732x to be used as an interrupt
1092 controller. It requires the driver to be built in the kernel.
1095 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1098 Say yes here to provide access to several register-oriented
1099 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1102 4 bits: pca9536, pca9537
1104 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1105 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1107 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1112 40 bits: pca9505, pca9698
1114 config GPIO_PCA953X_IRQ
1115 bool "Interrupt controller support for PCA953x"
1116 depends on GPIO_PCA953X
1117 select GPIOLIB_IRQCHIP
1119 Say yes here to enable the pca953x to be used as an interrupt
1123 tristate "PCA9570 4-Bit I2C GPO expander"
1125 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1127 To compile this driver as a module, choose M here: the module will
1128 be called gpio-pca9570.
1131 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1132 select GPIOLIB_IRQCHIP
1135 Say yes here to provide access to most "quasi-bidirectional" I2C
1136 GPIO expanders used for additional digital outputs or inputs.
1137 Most of these parts are from NXP, though TI is a second source for
1138 some of them. Compatible models include:
1140 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1141 pca9670, pca9672, pca9674, pca9674a,
1144 16 bits: pcf8575, pcf8575c, pca8575,
1145 pca9671, pca9673, pca9675
1147 Your board setup code will need to declare the expanders in
1148 use, and assign numbers to the GPIOs they expose. Those GPIOs
1149 can then be used from drivers and other kernel code, just like
1150 other GPIOs, but only accessible from task contexts.
1152 This driver provides an in-kernel interface to those GPIOs using
1153 platform-neutral GPIO calls.
1155 config GPIO_TPIC2810
1156 tristate "TPIC2810 8-Bit I2C GPO expander"
1158 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1160 To compile this driver as a module, choose M here: the module will
1161 be called gpio-tpic2810.
1164 tristate "Technologic Systems FPGA I2C GPIO"
1165 depends on SOC_IMX6 || COMPILE_TEST
1168 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1169 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1173 menu "MFD GPIO expanders"
1176 tristate "GPIO Support for ADP5520 PMIC"
1177 depends on PMIC_ADP5520
1179 This option enables support for on-chip GPIO found
1180 on Analog Devices ADP5520 PMICs.
1182 config GPIO_ALTERA_A10SR
1183 tristate "Altera Arria10 System Resource GPIO"
1184 depends on MFD_ALTERA_A10SR
1186 Driver for Arria10 Development Kit GPIO expansion which
1187 includes reads of pushbuttons and DIP switches as well
1191 tristate "Wolfson Microelectronics Arizona class devices"
1192 depends on MFD_ARIZONA
1194 Support for GPIOs on Wolfson Arizona class devices.
1197 tristate "ROHM BD71815 PMIC GPIO support"
1198 depends on MFD_ROHM_BD71828
1200 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1201 available on the ROHM PMIC.
1203 This driver can also be built as a module. If so, the module
1204 will be called gpio-bd71815.
1207 tristate "ROHM BD71828 GPIO support"
1208 depends on MFD_ROHM_BD71828
1210 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1211 available on the ROHM PMIC in total. The GPIOs are limited to
1212 outputs only and pins must be configured to GPIO outputs by
1213 OTP. Enable this only if you want to use these pins as outputs.
1215 This driver can also be built as a module. If so, the module
1216 will be called gpio-bd71828.
1218 config GPIO_BD9571MWV
1219 tristate "ROHM BD9571 GPIO support"
1220 depends on MFD_BD9571MWV
1222 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1223 available on the ROHM PMIC in total, both of which can also
1224 generate interrupts.
1226 This driver can also be built as a module. If so, the module
1227 will be called gpio-bd9571mwv.
1229 config GPIO_CRYSTAL_COVE
1230 tristate "GPIO support for Crystal Cove PMIC"
1231 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1232 select GPIOLIB_IRQCHIP
1234 Support for GPIO pins on Crystal Cove PMIC.
1236 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1239 This driver can also be built as a module. If so, the module will be
1240 called gpio-crystalcove.
1243 tristate "AMD CS5535/CS5536 GPIO support"
1244 depends on X86 || MIPS || COMPILE_TEST
1245 depends on MFD_CS5535
1247 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1248 can be used for quite a number of things. The CS5535/6 is found on
1249 AMD Geode and Lemote Yeeloong devices.
1254 tristate "Dialog DA9052 GPIO"
1255 depends on PMIC_DA9052
1257 Say yes here to enable the GPIO driver for the DA9052 chip.
1260 tristate "Dialog Semiconductor DA9055 GPIO"
1261 depends on MFD_DA9055
1263 Say yes here to enable the GPIO driver for the DA9055 chip.
1265 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1266 be controlled by this driver.
1268 If driver is built as a module it will be called gpio-da9055.
1271 tristate "Diolan DLN2 GPIO support"
1273 select GPIOLIB_IRQCHIP
1276 Select this option to enable GPIO driver for the Diolan DLN2
1279 This driver can also be built as a module. If so, the module
1280 will be called gpio-dln2.
1283 bool "HTC EGPIO support"
1286 This driver supports the CPLD egpio chip present on
1287 several HTC phones. It provides basic support for input
1288 pins, output pins, and IRQs.
1290 config GPIO_ELKHARTLAKE
1291 tristate "Intel Elkhart Lake PSE GPIO support"
1292 depends on X86 || COMPILE_TEST
1295 Select this option to enable GPIO support for Intel Elkhart Lake
1298 To compile this driver as a module, choose M here: the module will
1299 be called gpio-elkhartlake.
1301 config GPIO_JANZ_TTL
1302 tristate "Janz VMOD-TTL Digital IO Module"
1303 depends on MFD_JANZ_CMODIO
1305 This enables support for the Janz VMOD-TTL Digital IO module.
1306 This driver provides support for driving the pins in output
1307 mode only. Input mode is not supported.
1310 tristate "Kontron ETX / COMexpress GPIO"
1311 depends on MFD_KEMPLD
1313 This enables support for the PLD GPIO interface on some Kontron ETX
1314 and COMexpress (ETXexpress) modules.
1316 This driver can also be built as a module. If so, the module will be
1320 tristate "INTEL La Jolla Cove Adapter GPIO support"
1322 select GPIOLIB_IRQCHIP
1325 Select this option to enable GPIO driver for the INTEL
1326 La Jolla Cove Adapter (LJCA) board.
1328 This driver can also be built as a module. If so, the module
1329 will be called gpio-ljca.
1332 tristate "TI/National Semiconductor LP3943 GPIO expander"
1333 depends on MFD_LP3943
1335 GPIO driver for LP3943 MFD.
1336 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1337 Open drain outputs are required for this usage.
1340 tristate "TI LP873X GPO"
1341 depends on MFD_TI_LP873X
1343 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1346 This driver can also be built as a module. If so, the module will be
1350 tristate "TI LP87565 GPIO"
1351 depends on MFD_TI_LP87565
1353 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1356 This driver can also be built as a module. If so, the module will be
1357 called gpio-lp87565.
1360 tristate "Cirrus Logic Madera class codecs"
1361 depends on PINCTRL_MADERA
1363 Support for GPIOs on Cirrus Logic Madera class codecs.
1365 config GPIO_MAX77620
1366 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1367 depends on MFD_MAX77620
1368 select GPIOLIB_IRQCHIP
1370 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1371 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1372 driver also provides interrupt support for each of the GPIOs.
1373 Say yes here to enable the max77620 to be used as GPIO controller.
1375 config GPIO_MAX77650
1376 tristate "Maxim MAX77650/77651 GPIO support"
1377 depends on MFD_MAX77650
1379 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1380 These chips have a single pin that can be configured as GPIO.
1383 bool "TI PALMAS series PMICs GPIO"
1384 depends on MFD_PALMAS
1386 Select this option to enable GPIO driver for the TI PALMAS
1389 config GPIO_PMIC_EIC_SPRD
1390 tristate "Spreadtrum PMIC EIC support"
1391 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1393 select GPIOLIB_IRQCHIP
1395 Say yes here to support Spreadtrum PMIC EIC device.
1398 bool "RICOH RC5T583 GPIO"
1399 depends on MFD_RC5T583
1401 Select this option to enable GPIO driver for the Ricoh RC5T583
1403 This driver provides the support for driving/reading the GPIO pins
1404 of RC5T583 device through standard GPIO library.
1406 config GPIO_SL28CPLD
1407 tristate "Kontron sl28cpld GPIO support"
1408 depends on MFD_SL28CPLD || COMPILE_TEST
1410 select GPIOLIB_IRQCHIP
1413 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1415 This driver can also be built as a module. If so, the module will be
1416 called gpio-sl28cpld.
1420 depends on MFD_STMPE
1422 select GPIOLIB_IRQCHIP
1424 This enables support for the GPIOs found on the STMPE I/O
1428 bool "TC3589X GPIOs"
1429 depends on MFD_TC3589X
1431 select GPIOLIB_IRQCHIP
1433 This enables support for the GPIOs found on the TC3589X
1436 config GPIO_TIMBERDALE
1437 bool "Support for timberdale GPIO IP"
1438 depends on MFD_TIMBERDALE
1440 Add support for the GPIO IP in the timberdale FPGA.
1442 config GPIO_TN48M_CPLD
1443 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1444 depends on MFD_TN48M_CPLD
1447 This enables support for the GPIOs found on the Delta
1448 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1449 they are input-only or output-only type.
1451 This driver can also be built as a module. If so, the
1452 module will be called gpio-tn48m.
1454 config GPIO_TPS65086
1455 tristate "TI TPS65086 GPO"
1456 depends on MFD_TPS65086
1458 This driver supports the GPO on TI TPS65086x PMICs.
1460 config GPIO_TPS65218
1461 tristate "TPS65218 GPIO"
1462 depends on MFD_TPS65218
1464 Select this option to enable GPIO driver for the TPS65218
1467 config GPIO_TPS65219
1468 tristate "TPS65219 GPIO"
1469 depends on MFD_TPS65219
1470 default MFD_TPS65219
1472 Select this option to enable GPIO driver for the TPS65219 chip
1474 GPIO0 is statically configured as either input or output prior to
1475 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1476 is statically configured by NVM. GPIO0 can't be used as a generic
1477 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1480 This driver can also be built as a module. If so, the module will be
1481 called gpio_tps65219.
1483 config GPIO_TPS6586X
1484 bool "TPS6586X GPIO"
1485 depends on MFD_TPS6586X
1487 Select this option to enable GPIO driver for the TPS6586X
1490 config GPIO_TPS65910
1491 bool "TPS65910 GPIO"
1492 depends on MFD_TPS65910
1494 Select this option to enable GPIO driver for the TPS65910
1497 config GPIO_TPS65912
1498 tristate "TI TPS65912 GPIO"
1499 depends on MFD_TPS65912
1501 This driver supports TPS65912 GPIO chip.
1503 config GPIO_TPS68470
1504 tristate "TPS68470 GPIO"
1505 depends on INTEL_SKL_INT3472
1507 Select this option to enable GPIO driver for the TPS68470
1509 There are 7 GPIOs and few sensor-related GPIOs supported
1510 by the TPS68470. While the 7 GPIOs can be configured as
1511 input or output as appropriate, the sensor related GPIOs
1512 are "output only" GPIOs.
1515 tristate "TQ-Systems QTMX86 GPIO"
1516 depends on MFD_TQMX86 || COMPILE_TEST
1517 depends on HAS_IOPORT_MAP
1518 select GPIOLIB_IRQCHIP
1520 This driver supports GPIO on the TQMX86 IO controller.
1523 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1524 depends on TWL4030_CORE
1526 Say yes here to access the GPIO signals of various multi-function
1527 power management chips from Texas Instruments.
1530 tristate "TWL6040 GPO"
1531 depends on TWL6040_CORE
1533 Say yes here to access the GPO signals of twl6040
1534 audio chip from Texas Instruments.
1536 config GPIO_WHISKEY_COVE
1537 tristate "GPIO support for Whiskey Cove PMIC"
1538 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1539 select GPIOLIB_IRQCHIP
1541 Support for GPIO pins on Whiskey Cove PMIC.
1543 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1546 This driver can also be built as a module. If so, the module will be
1550 tristate "WM831x GPIOs"
1551 depends on MFD_WM831X
1553 Say yes here to access the GPIO signals of WM831x power management
1554 chips from Wolfson Microelectronics.
1557 tristate "WM8350 GPIOs"
1558 depends on MFD_WM8350
1560 Say yes here to access the GPIO signals of WM8350 power management
1561 chips from Wolfson Microelectronics.
1564 tristate "WM8994 GPIOs"
1565 depends on MFD_WM8994
1567 Say yes here to access the GPIO signals of WM8994 audio hub
1568 CODECs from Wolfson Microelectronics.
1572 menu "PCI GPIO expanders"
1576 tristate "AMD 8111 GPIO driver"
1577 depends on X86 || COMPILE_TEST
1578 depends on HAS_IOPORT_MAP
1580 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1582 Note that usually system firmware/ACPI handles GPIO pins on their
1583 own and users might easily break their systems with uncareful usage
1589 tristate "BT8XX GPIO abuser"
1590 depends on VIDEO_BT848=n
1592 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1593 as a cheap PCI GPIO card.
1595 This chip can be found on Miro, Hauppauge and STB TV-cards.
1597 The card needs to be physically altered for using it as a
1598 GPIO card. For more information on how to build a GPIO card
1599 from a BT8xx TV card, see the documentation file at
1600 Documentation/driver-api/gpio/bt8xxgpio.rst
1604 config GPIO_MERRIFIELD
1605 tristate "Intel Merrifield GPIO support"
1606 depends on X86_INTEL_MID
1609 Say Y here to support Intel Merrifield GPIO.
1612 tristate "Mellanox BlueField SoC GPIO"
1613 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1616 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1619 tristate "Mellanox BlueField 2 SoC GPIO"
1620 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1622 select GPIOLIB_IRQCHIP
1624 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1627 tristate "Mellanox BlueField 3 SoC GPIO"
1628 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1630 select GPIOLIB_IRQCHIP
1632 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1633 This GPIO controller supports interrupt handling and enables the
1634 manipulation of certain GPIO pins.
1635 This controller should be used in parallel with pinctrl-mlxbf3 to
1636 control the desired GPIOs.
1637 This driver can also be built as a module called mlxbf3-gpio.
1640 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1641 depends on X86 || COMPILE_TEST
1642 select GENERIC_IRQ_CHIP
1644 ML7213 is companion chip for Intel Atom E6xx series.
1645 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1646 Hub) which is for IVI (In-Vehicle Infotainment) use.
1647 This driver can access the IOH's GPIO device.
1650 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1651 depends on X86_32 || MIPS || COMPILE_TEST
1652 select GENERIC_IRQ_CHIP
1654 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1655 which is an IOH (Input/Output Hub) for x86 embedded processor.
1656 This driver can access PCH GPIO device.
1658 This driver also can be used for LAPIS Semiconductor IOH (Input/
1659 Output Hub), ML7223 and ML7831.
1660 ML7223 IOH is for MP (Media Phone) use.
1661 ML7831 IOH is for general purpose use.
1662 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1663 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1665 config GPIO_PCI_IDIO_16
1666 tristate "ACCES PCI-IDIO-16 GPIO support"
1670 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1671 generated when any of the inputs change state (low to high or high to
1672 low). Input filter control is not supported by this driver, and the
1673 input filters are deactivated by this driver.
1675 config GPIO_PCIE_IDIO_24
1676 tristate "ACCES PCIe-IDIO-24 GPIO support"
1679 select GPIOLIB_IRQCHIP
1682 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1683 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1684 when any of the inputs change state (low to high or high to low).
1685 Input filter control is not supported by this driver, and the input
1686 filters are deactivated by this driver.
1689 tristate "RDC R-321x GPIO support"
1693 Support for the RDC R321x SoC GPIOs over southbridge
1694 PCI configuration space.
1696 config GPIO_SODAVILLE
1697 bool "Intel Sodaville GPIO support"
1698 depends on X86 && OF
1700 select GENERIC_IRQ_CHIP
1702 Say Y here to support Intel Sodaville GPIO.
1706 menu "SPI GPIO expanders"
1707 depends on SPI_MASTER
1710 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1713 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1714 shift registers. This driver can be used to provide access
1715 to more GPIO outputs.
1717 config GPIO_MAX3191X
1718 tristate "Maxim MAX3191x industrial serializer"
1721 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1722 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1723 chip to make 8 digital 24V inputs available via SPI. Supports
1724 CRC checksums to guard against electromagnetic interference,
1725 as well as undervoltage and overtemperature detection.
1728 tristate "Maxim MAX7301 GPIO expander"
1731 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1734 tristate "Freescale MC33880 high-side/low-side switch"
1736 SPI driver for Freescale MC33880 high-side/low-side switch.
1737 This provides GPIO interface supporting inputs and outputs.
1740 tristate "Generic parallel-in/serial-out shift register"
1742 GPIO driver for SPI compatible parallel-in/serial-out shift
1743 registers. These are input only devices.
1746 tristate "EXAR XRA1403 16-bit GPIO expander"
1749 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1752 tristate "Turris Mox Moxtet bus GPIO expander"
1755 Say yes here if you are building for the Turris Mox router.
1756 This is the driver needed for configuring the GPIOs via the Moxtet
1757 bus. For example the Mox module with SFP cage needs this driver
1758 so that phylink can use corresponding GPIOs.
1762 menu "USB GPIO expanders"
1765 config GPIO_VIPERBOARD
1766 tristate "Viperboard GPIO a & b support"
1767 depends on MFD_VIPERBOARD
1769 Say yes here to access the GPIO signals of Nano River
1770 Technologies Viperboard. There are two GPIO chips on the
1771 board: gpioa and gpiob.
1772 See viperboard API specification and Nano
1773 River Tech's viperboard.h for detailed meaning
1774 of the module parameters.
1778 menu "Virtual GPIO drivers"
1780 config GPIO_AGGREGATOR
1781 tristate "GPIO Aggregator"
1783 Say yes here to enable the GPIO Aggregator, which provides a way to
1784 aggregate existing GPIO lines into a new virtual GPIO chip.
1785 This can serve the following purposes:
1786 - Assign permissions for a collection of GPIO lines to a user,
1787 - Export a collection of GPIO lines to a virtual machine,
1788 - Provide a generic driver for a GPIO-operated device in an
1789 industrial control context, to be operated from userspace using
1790 the GPIO chardev interface.
1793 tristate "GPIO latch driver"
1795 Say yes here to enable a driver for GPIO multiplexers based on latches
1796 connected to other GPIOs.
1799 tristate "GPIO Testing Driver"
1802 This enables GPIO Testing driver, which provides a way to test GPIO
1803 subsystem through sysfs (or char device) and debugfs.
1804 User could use it through the script in
1805 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1809 tristate "VirtIO GPIO support"
1811 select GPIOLIB_IRQCHIP
1813 Say Y here to enable guest support for virtio-based GPIO controllers.
1815 These virtual GPIOs can be routed to real GPIOs or attached to
1816 simulators on the host (like QEMU).
1819 tristate "GPIO Simulator Module"
1823 This enables the GPIO simulator - a configfs-based GPIO testing