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)"
65 Say Y here to add the legacy sysfs interface for GPIOs.
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead. The character device is always
73 depends on HAS_IOMEM # Only for IOMEM drivers
76 # put drivers in the right section, in alphabetical order
78 # This symbol is selected by both I2C and SPI expanders
82 menu "Memory mapped GPIO drivers"
86 tristate "GPIO driver for 74xx-ICs with MMIO access"
90 Say yes here to support GPIO functionality for 74xx-compatible ICs
91 with MMIO access. Compatible models include:
92 1 bit: 741G125 (Input), 741G74 (Output)
93 2 bits: 742G125 (Input), 7474 (Output)
94 4 bits: 74125 (Input), 74175 (Output)
95 6 bits: 74365 (Input), 74174 (Output)
96 8 bits: 74244 (Input), 74273 (Output)
97 16 bits: 741624 (Input), 7416374 (Output)
100 tristate "Altera GPIO"
102 select GPIOLIB_IRQCHIP
104 Say Y or M here to build support for the Altera PIO device.
106 If driver is built as a module it will be called gpio-altera.
109 tristate "AMD Promontory GPIO support"
113 driver for GPIO functionality on Promontory IOHub
114 Require ACPI ASL code to enumerate as a platform device.
117 tristate "Aspeed GPIO support"
118 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
119 select GPIOLIB_IRQCHIP
121 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
123 config GPIO_ASPEED_SGPIO
124 bool "Aspeed SGPIO support"
125 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
127 select GPIOLIB_IRQCHIP
129 Say Y here to support Aspeed AST2500 SGPIO functionality.
132 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
134 depends on ATH79 || COMPILE_TEST
136 select GPIOLIB_IRQCHIP
138 Select this option to enable GPIO driver for
139 Atheros AR71XX/AR724X/AR913X SoC devices.
141 config GPIO_RASPBERRYPI_EXP
142 tristate "Raspberry Pi 3 GPIO Expander"
143 default RASPBERRYPI_FIRMWARE
145 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
146 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
147 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
149 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
150 the firmware mailbox to communicate with VideoCore on BCM283x chips.
153 bool "Broadcom Kona GPIO"
154 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
156 Turn on GPIO support for Broadcom "Kona" chips.
158 config GPIO_BCM_XGS_IPROC
159 tristate "BRCM XGS iProc GPIO support"
160 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
162 select GPIOLIB_IRQCHIP
163 default ARCH_BCM_IPROC
165 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
168 tristate "BRCMSTB GPIO support"
169 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
170 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
174 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
177 tristate "Cadence GPIO support"
180 select GPIOLIB_IRQCHIP
182 Say yes here to enable support for Cadence GPIO controller.
185 tristate "CLPS711X GPIO support"
186 depends on ARCH_CLPS711X || COMPILE_TEST
189 Say yes here to support GPIO on CLPS711X SoCs.
192 bool "TI Davinci/Keystone GPIO support"
193 default y if ARCH_DAVINCI
194 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
196 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
199 tristate "Synopsys DesignWare APB GPIO driver"
201 select GENERIC_IRQ_CHIP
203 Say Y or M here to build support for the Synopsys DesignWare APB
207 tristate "Spreadtrum EIC support"
208 depends on ARCH_SPRD || COMPILE_TEST
210 select GPIOLIB_IRQCHIP
212 Say yes here to support Spreadtrum EIC device.
215 tristate "Emma Mobile GPIO"
216 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
218 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
222 depends on ARCH_EP93XX
224 select GPIOLIB_IRQCHIP
227 tristate "Support for GPIO pins on XR17V352/354/358"
228 depends on SERIAL_8250_EXAR
230 Selecting this option will enable handling of GPIO pins present
231 on Exar XR17V352/354/358 chips.
234 bool "GE FPGA based GPIO"
238 Support for common GPIO functionality provided on some GE Single Board
241 This driver provides basic support (configure as input or output, read
242 and write pin state) for GPIO implemented in a number of GE single
245 config GPIO_FTGPIO010
246 bool "Faraday FTGPIO010 GPIO"
249 select GPIOLIB_IRQCHIP
250 default (ARCH_GEMINI || ARCH_MOXART)
252 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
253 Cortina systems Gemini platforms, Moxa ART and others.
255 config GPIO_GENERIC_PLATFORM
256 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
259 Say yes here to support basic platform_device memory-mapped GPIO controllers.
262 tristate "Aeroflex Gaisler GRGPIO support"
267 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
268 VHDL IP core library.
271 tristate "Nintendo Wii (Hollywood) GPIO"
274 select GPIOLIB_IRQCHIP
276 Select this to support the GPIO controller of the Nintendo Wii.
281 tristate "Intel ICH GPIO"
282 depends on PCI && X86
286 Say yes here to support the GPIO functionality of a number of Intel
287 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
288 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
289 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
294 tristate "Intel IOP GPIO"
295 depends on ARCH_IOP32X || COMPILE_TEST
298 Say yes here to support the GPIO functionality of a number of Intel
304 bool "Intel IXP4xx GPIO"
305 depends on ARM # For <asm/mach-types.h>
306 depends on ARCH_IXP4XX
308 select GPIOLIB_IRQCHIP
309 select IRQ_DOMAIN_HIERARCHY
311 Say yes here to support the GPIO functionality of a number of Intel
312 IXP4xx series of chips.
316 tristate "Xylon LogiCVC GPIO support"
317 depends on MFD_SYSCON && OF
319 Say yes here to support GPIO functionality of the Xylon LogiCVC
320 programmable logic block.
323 bool "Loongson-2/3 GPIO support"
324 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
326 driver for GPIO functionality on Loongson-2F/3A/3B processors.
329 tristate "NXP LPC18XX/43XX GPIO support"
330 default y if ARCH_LPC18XX
331 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
332 select IRQ_DOMAIN_HIERARCHY
334 Select this option to enable GPIO driver for
335 NXP LPC18XX/43XX devices.
338 tristate "NXP LPC32XX GPIO support"
339 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
341 Select this option to enable GPIO driver for
345 tristate "GPIO support for Fujitsu MB86S7x Platforms"
347 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
350 tristate "MEN 16Z127 GPIO support"
354 Say yes here to support the MEN 16Z127 GPIO Controller
356 config GPIO_MM_LANTIQ
357 bool "Lantiq Memory mapped GPIOs"
358 depends on LANTIQ && SOC_XWAY
360 This enables support for memory mapped GPIOs on the External Bus Unit
361 (EBU) found on Lantiq SoCs. The gpios are output only as they are
362 created by attaching a 16bit latch to the bus.
366 depends on PPC_MPC52xx
369 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
370 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
371 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
376 Say Y here if you're going to use hardware that connects to the
377 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
380 bool "Mediatek MT7621 GPIO Support"
381 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
384 select GPIOLIB_IRQCHIP
386 Say yes here to support the Mediatek MT7621 SoC GPIO device
390 depends on PLAT_ORION || ARCH_MVEBU
392 select GENERIC_IRQ_CHIP
397 depends on ARCH_MXC || COMPILE_TEST
399 select GENERIC_IRQ_CHIP
403 depends on ARCH_MXS || COMPILE_TEST
405 select GENERIC_IRQ_CHIP
408 tristate "Cavium OCTEON GPIO"
409 depends on GPIOLIB && CAVIUM_OCTEON_SOC
412 Say yes here to support the on-chip GPIO lines on the OCTEON
416 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
417 default y if ARCH_OMAP
419 select GENERIC_IRQ_CHIP
420 select GPIOLIB_IRQCHIP
422 Say yes here to enable GPIO support for TI OMAP SoCs.
425 tristate "PrimeCell PL061 GPIO support"
428 select GPIOLIB_IRQCHIP
430 Say yes here to support the PrimeCell PL061 GPIO device
432 config GPIO_PMIC_EIC_SPRD
433 tristate "Spreadtrum PMIC EIC support"
434 depends on MFD_SC27XX_PMIC || COMPILE_TEST
436 select GPIOLIB_IRQCHIP
438 Say yes here to support Spreadtrum PMIC EIC device.
441 bool "PXA GPIO support"
442 depends on ARCH_PXA || ARCH_MMP
444 Say yes here to support the PXA GPIO device
447 tristate "Renesas R-Car GPIO"
448 depends on ARCH_RENESAS || COMPILE_TEST
449 select GPIOLIB_IRQCHIP
451 Say yes here to support GPIO on Renesas R-Car SoCs.
454 bool "RDA Micro GPIO controller support"
455 depends on ARCH_RDA || COMPILE_TEST
458 select GPIOLIB_IRQCHIP
460 Say Y here to support RDA Micro GPIO controller.
465 A 32-bit single register GPIO fixed in/out implementation. This
466 can be used to represent any register as a set of GPIO signals.
468 config GPIO_SAMA5D2_PIOBU
469 tristate "SAMA5D2 PIOBU GPIO support"
470 depends on MFD_SYSCON
474 Say yes here to use the PIOBU pins as GPIOs.
476 PIOBU pins on the SAMA5D2 can be used as GPIOs.
477 The difference from regular GPIOs is that they
478 maintain their value during backup/self-refresh.
481 bool "SiFive GPIO support"
482 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
484 select GPIOLIB_IRQCHIP
487 Say yes here to support the GPIO device on SiFive SoCs.
490 tristate "SIOX GPIO support"
492 select GPIOLIB_IRQCHIP
494 Say yes here to support SIOX I/O devices. These are units connected
495 via a SIOX bus and have a number of fixed-direction I/O lines.
497 config GPIO_SNPS_CREG
498 bool "Synopsys GPIO via CREG (Control REGisters) driver"
499 depends on ARC || COMPILE_TEST
502 This driver supports GPIOs via CREG on various Synopsys SoCs.
503 This is a single-register MMIO GPIO driver for complex cases
504 where only several fields in register belong to GPIO lines and
505 each GPIO line owns a field with different length and on/off value.
507 config GPIO_SPEAR_SPICS
508 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
509 depends on PLAT_SPEAR
510 select GENERIC_IRQ_CHIP
512 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
515 tristate "Spreadtrum GPIO support"
516 depends on ARCH_SPRD || COMPILE_TEST
518 select GPIOLIB_IRQCHIP
520 Say yes here to support Spreadtrum GPIO device.
523 bool "STA2x11/ConneXt GPIO support"
524 depends on MFD_STA2X11
525 select GENERIC_IRQ_CHIP
527 Say yes here to support the STA2x11/ConneXt GPIO device.
528 The GPIO module has 128 GPIO pins with alternate functions.
531 bool "XWAY STP GPIOs"
532 depends on SOC_XWAY || COMPILE_TEST
535 This enables support for the Serial To Parallel (STP) unit found on
536 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
537 that can be up to 24 bit. This peripheral is aimed at driving leds.
538 Some of the gpios/leds can be auto updated by the soc with dsl and
542 tristate "GPIO based on SYSCON"
543 depends on MFD_SYSCON && OF
545 Say yes here to support GPIO functionality though SYSCON driver.
550 select GENERIC_IRQ_CHIP
554 bool "NVIDIA Tegra GPIO support"
556 depends on ARCH_TEGRA || COMPILE_TEST
559 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
562 tristate "NVIDIA Tegra186 GPIO support"
563 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
564 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
566 select GPIOLIB_IRQCHIP
567 select IRQ_DOMAIN_HIERARCHY
569 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
572 tristate "TS-4800 DIO blocks and compatibles"
574 depends on SOC_IMX51 || COMPILE_TEST
577 This driver support TS-4800 FPGA GPIO controllers.
580 tristate "Cavium ThunderX/OCTEON-TX GPIO"
581 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
583 select GPIOLIB_IRQCHIP
584 select IRQ_DOMAIN_HIERARCHY
585 select IRQ_FASTEOI_HIERARCHY_HANDLERS
587 Say yes here to support the on-chip GPIO lines on the ThunderX
588 and OCTEON-TX families of SoCs.
591 tristate "UniPhier GPIO support"
592 depends on ARCH_UNIPHIER || COMPILE_TEST
594 select IRQ_DOMAIN_HIERARCHY
596 Say yes here to support UniPhier GPIOs.
600 depends on ARCH_MXC && SOC_VF610
601 select GPIOLIB_IRQCHIP
603 Say yes here to support Vybrid vf610 GPIOs.
606 tristate "NEC VR4100 series General-purpose I/O Uint support"
607 depends on CPU_VR41XX
609 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
612 tristate "VIA VX855/VX875 GPIO"
613 depends on (X86 || COMPILE_TEST) && PCI
617 Support access to the VX855/VX875 GPIO lines through the gpio library.
619 This driver provides common support for accessing the device,
620 additional drivers must be enabled in order to use the
621 functionality of the device.
624 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
625 depends on MFD_WCD934X && OF_GPIO
627 This driver is to supprot GPIO block found on the Qualcomm Technologies
628 Inc WCD9340/WCD9341 Audio Codec.
631 bool "APM X-Gene GPIO controller support"
632 depends on ARM64 && OF_GPIO
634 This driver is to support the GPIO block within the APM X-Gene SoC
635 platform's generic flash controller. The GPIO pins are muxed with
636 the generic flash controller's address and data pins. Say yes
637 here to enable the GFC GPIO functionality.
640 tristate "APM X-Gene GPIO standby controller support"
641 depends on (ARCH_XGENE || COMPILE_TEST)
643 select GPIOLIB_IRQCHIP
644 select IRQ_DOMAIN_HIERARCHY
646 This driver supports the GPIO block within the APM X-Gene
647 Standby Domain. Say yes here to enable the GPIO functionality.
650 tristate "Xilinx GPIO support"
652 Say yes here to support the Xilinx FPGA GPIO device
655 tristate "Netlogic XLP GPIO support"
656 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
657 select GPIOLIB_IRQCHIP
659 This driver provides support for GPIO interface on Netlogic XLP MIPS64
660 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
661 XLP9XX and XLP5XX. The same GPIO controller block is also present in
662 Cavium's ThunderX2 CN99XX SoCs.
667 bool "Xtensa GPIO32 support"
669 depends on HAVE_XTENSA_GPIO32
672 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
673 and EXPSTATE (output) ports
676 bool "LSI ZEVIO SoC memory mapped GPIOs"
677 depends on ARM && OF_GPIO
679 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
682 tristate "Xilinx Zynq GPIO support"
683 depends on ARCH_ZYNQ || ARCH_ZYNQMP
684 select GPIOLIB_IRQCHIP
686 Say yes here to support Xilinx Zynq GPIO controller.
689 bool "ZTE ZX GPIO support"
690 depends on ARCH_ZX || COMPILE_TEST
691 select GPIOLIB_IRQCHIP
693 Say yes here to support the GPIO device on ZTE ZX SoCs.
695 config GPIO_LOONGSON1
696 tristate "Loongson1 GPIO support"
697 depends on MACH_LOONGSON32
700 Say Y or M here to support GPIO on Loongson1 SoCs.
703 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
705 This option enables driver for GPIO on AMDs Fusion Controller Hub,
706 as found on G-series SOCs (eg. GX-412TC)
708 Note: This driver doesn't registers itself automatically, as it
709 needs to be provided with platform specific configuration.
710 (See eg. CONFIG_PCENGINES_APU2.)
713 menu "Port-mapped I/O GPIO drivers"
714 depends on X86 # Unconditional I/O space access
716 config GPIO_104_DIO_48E
717 tristate "ACCES 104-DIO-48E GPIO support"
720 select GPIOLIB_IRQCHIP
722 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
723 104-DIO-24E). The base port addresses for the devices may be
724 configured via the base module parameter. The interrupt line numbers
725 for the devices may be configured via the irq module parameter.
727 config GPIO_104_IDIO_16
728 tristate "ACCES 104-IDIO-16 GPIO support"
731 select GPIOLIB_IRQCHIP
733 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
734 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
735 base port addresses for the devices may be configured via the base
736 module parameter. The interrupt line numbers for the devices may be
737 configured via the irq module parameter.
739 config GPIO_104_IDI_48
740 tristate "ACCES 104-IDI-48 GPIO support"
743 select GPIOLIB_IRQCHIP
745 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
746 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
747 the devices may be configured via the base module parameter. The
748 interrupt line numbers for the devices may be configured via the irq
752 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
754 This option enables support for GPIOs found on Fintek Super-I/O
755 chips F71869, F71869A, F71882FG, F71889F and F81866.
757 To compile this driver as a module, choose M here: the module will
758 be called f7188x-gpio.
761 tristate "Diamond Systems GPIO-MM GPIO support"
765 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
767 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
768 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
769 support for these 48 channels of digital I/O.
771 The base port addresses for the devices may be configured via the base
772 array module parameter.
775 tristate "IT87xx GPIO support"
777 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
779 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
780 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
783 To compile this driver as a module, choose M here: the module will
787 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
788 depends on (X86 || COMPILE_TEST) && PCI
792 Say yes here to support GPIO interface on Intel Poulsbo SCH,
793 Intel Tunnel Creek processor, Intel Centerton processor or
794 Intel Quark X1000 SoC.
796 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
797 powered by the core power rail and are turned off during sleep
798 modes (S3 and higher). The remaining four GPIOs are powered by
799 the Intel SCH suspend power supply. These GPIOs remain
800 active during S3. The suspend powered GPIOs can be used to wake the
801 system from the Suspend-to-RAM state.
803 The Intel Tunnel Creek processor has 5 GPIOs powered by the
804 core power rail and 9 from suspend power supply.
806 The Intel Centerton processor has a total of 30 GPIO pins.
807 Twenty-one are powered by the core power rail and 9 from the
808 suspend power supply.
810 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
811 power well and 6 from the suspend power well.
814 tristate "SMSC SCH311x SuperI/O GPIO"
816 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
817 SCH3116 "Super I/O" chipsets.
819 To compile this driver as a module, choose M here: the module will
820 be called gpio-sch311x.
823 tristate "TS-5500 DIO blocks and compatibles"
824 depends on TS5500 || COMPILE_TEST
826 This driver supports Digital I/O exposed by pin blocks found on some
827 Technologic Systems platforms. It includes, but is not limited to, 3
828 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
832 tristate "Winbond Super I/O GPIO support"
835 This option enables support for GPIOs found on Winbond Super I/O
837 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
840 You will need to provide a module parameter "gpios", or a
841 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
842 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
844 To compile this driver as a module, choose M here: the module will
845 be called gpio-winbond.
848 tristate "WinSystems WS16C48 GPIO support"
850 select GPIOLIB_IRQCHIP
852 Enables GPIO support for the WinSystems WS16C48. The base port
853 addresses for the devices may be configured via the base module
854 parameter. The interrupt line numbers for the devices may be
855 configured via the irq module parameter.
859 menu "I2C GPIO expanders"
863 tristate "ADP5588 I2C GPIO expander"
865 This option enables support for 18 GPIOs found
866 on Analog Devices ADP5588 GPIO Expanders.
868 config GPIO_ADP5588_IRQ
869 bool "Interrupt controller support for ADP5588"
870 depends on GPIO_ADP5588=y
871 select GPIOLIB_IRQCHIP
873 Say yes here to enable the adp5588 to be used as an interrupt
874 controller. It requires the driver to be built in the kernel.
877 tristate "Avionic Design N-bit GPIO expander"
879 select GPIOLIB_IRQCHIP
881 This option enables support for N GPIOs found on Avionic Design
882 I2C GPIO expanders. The register space will be extended by powers
883 of two, so the controller will need to accommodate for that. For
884 example: if a controller provides 48 pins, 6 registers will be
885 enough to represent all pins, but the driver will assume a
886 register layout for 64 pins (8 registers).
889 tristate "Gateworks PLD GPIO Expander"
892 Say yes here to provide access to the Gateworks I2C PLD GPIO
893 Expander. This is used at least on the Cambria GW2358-4.
896 tristate "Maxim MAX7300 GPIO expander"
899 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
902 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
904 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
905 Port Expanders. Each IO port on these chips has a fixed role of
906 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
907 Input and Output (designed by 'P'). The combinations are listed
910 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
911 max7322 (4I4O), max7323 (4P4O)
913 16 bits: max7324 (8I8O), max7325 (8P8O),
914 max7326 (4I12O), max7327 (4P12O)
916 Board setup code must specify the model to use, and the start
917 number for these GPIOs.
919 config GPIO_MAX732X_IRQ
920 bool "Interrupt controller support for MAX732x"
921 depends on GPIO_MAX732X=y
922 select GPIOLIB_IRQCHIP
924 Say yes here to enable the max732x to be used as an interrupt
925 controller. It requires the driver to be built in the kernel.
927 config GPIO_MC9S08DZ60
928 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
929 depends on I2C=y && MACH_MX35_3DS
931 Select this to enable the MC9S08DZ60 GPIO driver
934 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
937 Say yes here to provide access to several register-oriented
938 SMBus I/O expanders, made mostly by NXP or TI. Compatible
941 4 bits: pca9536, pca9537
943 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
944 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
946 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
951 40 bits: pca9505, pca9698
953 config GPIO_PCA953X_IRQ
954 bool "Interrupt controller support for PCA953x"
955 depends on GPIO_PCA953X=y
956 select GPIOLIB_IRQCHIP
958 Say yes here to enable the pca953x to be used as an interrupt
959 controller. It requires the driver to be built in the kernel.
962 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
963 select GPIOLIB_IRQCHIP
966 Say yes here to provide access to most "quasi-bidirectional" I2C
967 GPIO expanders used for additional digital outputs or inputs.
968 Most of these parts are from NXP, though TI is a second source for
969 some of them. Compatible models include:
971 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
972 pca9670, pca9672, pca9674, pca9674a,
975 16 bits: pcf8575, pcf8575c, pca8575,
976 pca9671, pca9673, pca9675
978 Your board setup code will need to declare the expanders in
979 use, and assign numbers to the GPIOs they expose. Those GPIOs
980 can then be used from drivers and other kernel code, just like
981 other GPIOs, but only accessible from task contexts.
983 This driver provides an in-kernel interface to those GPIOs using
984 platform-neutral GPIO calls.
987 tristate "TPIC2810 8-Bit I2C GPO expander"
989 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
991 To compile this driver as a module, choose M here: the module will
992 be called gpio-tpic2810.
995 tristate "Technologic Systems FPGA I2C GPIO"
996 depends on SOC_IMX6 || COMPILE_TEST
999 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1000 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1004 menu "MFD GPIO expanders"
1007 tristate "GPIO Support for ADP5520 PMIC"
1008 depends on PMIC_ADP5520
1010 This option enables support for on-chip GPIO found
1011 on Analog Devices ADP5520 PMICs.
1013 config GPIO_ALTERA_A10SR
1014 tristate "Altera Arria10 System Resource GPIO"
1015 depends on MFD_ALTERA_A10SR
1017 Driver for Arria10 Development Kit GPIO expansion which
1018 includes reads of pushbuttons and DIP switches as well
1022 tristate "Wolfson Microelectronics Arizona class devices"
1023 depends on MFD_ARIZONA
1025 Support for GPIOs on Wolfson Arizona class devices.
1028 tristate "ROHM BD70528 GPIO support"
1029 depends on MFD_ROHM_BD70528
1031 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1032 available on the ROHM PMIC in total. The GPIOs can also
1033 generate interrupts.
1035 This driver can also be built as a module. If so, the module
1036 will be called gpio-bd70528.
1039 tristate "ROHM BD71828 GPIO support"
1040 depends on MFD_ROHM_BD71828
1042 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1043 available on the ROHM PMIC in total. The GPIOs are limited to
1044 outputs only and pins must be configured to GPIO outputs by
1045 OTP. Enable this only if you want to use these pins as outputs.
1047 This driver can also be built as a module. If so, the module
1048 will be called gpio-bd71828.
1050 config GPIO_BD9571MWV
1051 tristate "ROHM BD9571 GPIO support"
1052 depends on MFD_BD9571MWV
1054 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1055 available on the ROHM PMIC in total, both of which can also
1056 generate interrupts.
1058 This driver can also be built as a module. If so, the module
1059 will be called gpio-bd9571mwv.
1061 config GPIO_CRYSTAL_COVE
1062 tristate "GPIO support for Crystal Cove PMIC"
1063 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1064 select GPIOLIB_IRQCHIP
1066 Support for GPIO pins on Crystal Cove PMIC.
1068 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1071 This driver can also be built as a module. If so, the module will be
1072 called gpio-crystalcove.
1075 tristate "AMD CS5535/CS5536 GPIO support"
1076 depends on X86 || MIPS || COMPILE_TEST
1077 depends on MFD_CS5535
1079 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1080 can be used for quite a number of things. The CS5535/6 is found on
1081 AMD Geode and Lemote Yeeloong devices.
1086 tristate "Dialog DA9052 GPIO"
1087 depends on PMIC_DA9052
1089 Say yes here to enable the GPIO driver for the DA9052 chip.
1092 tristate "Dialog Semiconductor DA9055 GPIO"
1093 depends on MFD_DA9055
1095 Say yes here to enable the GPIO driver for the DA9055 chip.
1097 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1098 be controller by this driver.
1100 If driver is built as a module it will be called gpio-da9055.
1103 tristate "Diolan DLN2 GPIO support"
1105 select GPIOLIB_IRQCHIP
1108 Select this option to enable GPIO driver for the Diolan DLN2
1111 This driver can also be built as a module. If so, the module
1112 will be called gpio-dln2.
1115 bool "HTC EGPIO support"
1116 depends on GPIOLIB && ARM
1118 This driver supports the CPLD egpio chip present on
1119 several HTC phones. It provides basic support for input
1120 pins, output pins, and irqs.
1122 config GPIO_JANZ_TTL
1123 tristate "Janz VMOD-TTL Digital IO Module"
1124 depends on MFD_JANZ_CMODIO
1126 This enables support for the Janz VMOD-TTL Digital IO module.
1127 This driver provides support for driving the pins in output
1128 mode only. Input mode is not supported.
1131 tristate "Kontron ETX / COMexpress GPIO"
1132 depends on MFD_KEMPLD
1134 This enables support for the PLD GPIO interface on some Kontron ETX
1135 and COMexpress (ETXexpress) modules.
1137 This driver can also be built as a module. If so, the module will be
1141 tristate "TI/National Semiconductor LP3943 GPIO expander"
1142 depends on MFD_LP3943
1144 GPIO driver for LP3943 MFD.
1145 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1146 Open drain outputs are required for this usage.
1149 tristate "TI LP873X GPO"
1150 depends on MFD_TI_LP873X
1152 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1155 This driver can also be built as a module. If so, the module will be
1159 tristate "TI LP87565 GPIO"
1160 depends on MFD_TI_LP87565
1162 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1165 This driver can also be built as a module. If so, the module will be
1166 called gpio-lp87565.
1169 tristate "Cirrus Logic Madera class codecs"
1170 depends on PINCTRL_MADERA
1172 Support for GPIOs on Cirrus Logic Madera class codecs.
1174 config GPIO_MAX77620
1175 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1176 depends on MFD_MAX77620
1177 select GPIOLIB_IRQCHIP
1179 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1180 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1181 driver also provides interrupt support for each of the gpios.
1182 Say yes here to enable the max77620 to be used as gpio controller.
1184 config GPIO_MAX77650
1185 tristate "Maxim MAX77650/77651 GPIO support"
1186 depends on MFD_MAX77650
1188 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1189 These chips have a single pin that can be configured as GPIO.
1192 bool "Intel MSIC mixed signal gpio support"
1193 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1195 Enable support for GPIO on intel MSIC controllers found in
1199 bool "TI PALMAS series PMICs GPIO"
1200 depends on MFD_PALMAS
1202 Select this option to enable GPIO driver for the TI PALMAS
1206 bool "RICOH RC5T583 GPIO"
1207 depends on MFD_RC5T583
1209 Select this option to enable GPIO driver for the Ricoh RC5T583
1211 This driver provides the support for driving/reading the gpio pins
1212 of RC5T583 device through standard gpio library.
1216 depends on MFD_STMPE
1218 select GPIOLIB_IRQCHIP
1220 This enables support for the GPIOs found on the STMPE I/O
1224 bool "TC3589X GPIOs"
1225 depends on MFD_TC3589X
1227 select GPIOLIB_IRQCHIP
1229 This enables support for the GPIOs found on the TC3589X
1232 config GPIO_TIMBERDALE
1233 bool "Support for timberdale GPIO IP"
1234 depends on MFD_TIMBERDALE
1236 Add support for the GPIO IP in the timberdale FPGA.
1238 config GPIO_TPS65086
1239 tristate "TI TPS65086 GPO"
1240 depends on MFD_TPS65086
1242 This driver supports the GPO on TI TPS65086x PMICs.
1244 config GPIO_TPS65218
1245 tristate "TPS65218 GPIO"
1246 depends on MFD_TPS65218
1248 Select this option to enable GPIO driver for the TPS65218
1251 config GPIO_TPS6586X
1252 bool "TPS6586X GPIO"
1253 depends on MFD_TPS6586X
1255 Select this option to enable GPIO driver for the TPS6586X
1258 config GPIO_TPS65910
1259 bool "TPS65910 GPIO"
1260 depends on MFD_TPS65910
1262 Select this option to enable GPIO driver for the TPS65910
1265 config GPIO_TPS65912
1266 tristate "TI TPS65912 GPIO"
1267 depends on MFD_TPS65912
1269 This driver supports TPS65912 gpio chip
1271 config GPIO_TPS68470
1272 bool "TPS68470 GPIO"
1273 depends on MFD_TPS68470
1275 Select this option to enable GPIO driver for the TPS68470
1277 There are 7 GPIOs and few sensor related GPIOs supported
1278 by the TPS68470. While the 7 GPIOs can be configured as
1279 input or output as appropriate, the sensor related GPIOs
1280 are "output only" GPIOs.
1282 This driver config is bool, as the GPIO functionality
1283 of the TPS68470 must be available before dependent
1287 tristate "TQ-Systems QTMX86 GPIO"
1288 depends on MFD_TQMX86 || COMPILE_TEST
1289 select GPIOLIB_IRQCHIP
1291 This driver supports GPIO on the TQMX86 IO controller.
1294 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1295 depends on TWL4030_CORE
1297 Say yes here to access the GPIO signals of various multi-function
1298 power management chips from Texas Instruments.
1301 tristate "TWL6040 GPO"
1302 depends on TWL6040_CORE
1304 Say yes here to access the GPO signals of twl6040
1305 audio chip from Texas Instruments.
1308 tristate "Philips UCB1400 GPIO"
1309 depends on UCB1400_CORE
1311 This enables support for the Philips UCB1400 GPIO pins.
1312 The UCB1400 is an AC97 audio codec.
1314 config GPIO_WHISKEY_COVE
1315 tristate "GPIO support for Whiskey Cove PMIC"
1316 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1317 select GPIOLIB_IRQCHIP
1319 Support for GPIO pins on Whiskey Cove PMIC.
1321 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1324 This driver can also be built as a module. If so, the module will be
1328 tristate "WM831x GPIOs"
1329 depends on MFD_WM831X
1331 Say yes here to access the GPIO signals of WM831x power management
1332 chips from Wolfson Microelectronics.
1335 tristate "WM8350 GPIOs"
1336 depends on MFD_WM8350
1338 Say yes here to access the GPIO signals of WM8350 power management
1339 chips from Wolfson Microelectronics.
1342 tristate "WM8994 GPIOs"
1343 depends on MFD_WM8994
1345 Say yes here to access the GPIO signals of WM8994 audio hub
1346 CODECs from Wolfson Microelectronics.
1350 menu "PCI GPIO expanders"
1354 tristate "AMD 8111 GPIO driver"
1355 depends on X86 || COMPILE_TEST
1357 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1359 Note, that usually system firmware/ACPI handles GPIO pins on their
1360 own and users might easily break their systems with uncarefull usage
1366 tristate "BT8XX GPIO abuser"
1367 depends on VIDEO_BT848=n
1369 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1370 as a cheap PCI GPIO card.
1372 This chip can be found on Miro, Hauppauge and STB TV-cards.
1374 The card needs to be physically altered for using it as a
1375 GPIO card. For more information on how to build a GPIO card
1376 from a BT8xx TV card, see the documentation file at
1377 Documentation/driver-api/gpio/bt8xxgpio.rst
1381 config GPIO_INTEL_MID
1382 bool "Intel MID GPIO support"
1383 depends on X86_INTEL_MID
1384 select GPIOLIB_IRQCHIP
1386 Say Y here to support Intel MID GPIO.
1388 config GPIO_MERRIFIELD
1389 tristate "Intel Merrifield GPIO support"
1390 depends on X86_INTEL_MID
1391 select GPIOLIB_IRQCHIP
1393 Say Y here to support Intel Merrifield GPIO.
1396 tristate "Mellanox BlueField SoC GPIO"
1397 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1400 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1403 tristate "Mellanox BlueField 2 SoC GPIO"
1404 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1407 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1410 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1411 depends on X86 || COMPILE_TEST
1412 select GENERIC_IRQ_CHIP
1414 ML7213 is companion chip for Intel Atom E6xx series.
1415 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1416 Hub) which is for IVI(In-Vehicle Infotainment) use.
1417 This driver can access the IOH's GPIO device.
1420 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1421 depends on X86_32 || MIPS || COMPILE_TEST
1422 select GENERIC_IRQ_CHIP
1424 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1425 which is an IOH(Input/Output Hub) for x86 embedded processor.
1426 This driver can access PCH GPIO device.
1428 This driver also can be used for LAPIS Semiconductor IOH(Input/
1429 Output Hub), ML7223 and ML7831.
1430 ML7223 IOH is for MP(Media Phone) use.
1431 ML7831 IOH is for general purpose use.
1432 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1433 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1435 config GPIO_PCI_IDIO_16
1436 tristate "ACCES PCI-IDIO-16 GPIO support"
1437 select GPIOLIB_IRQCHIP
1439 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1440 generated when any of the inputs change state (low to high or high to
1441 low). Input filter control is not supported by this driver, and the
1442 input filters are deactivated by this driver.
1444 config GPIO_PCIE_IDIO_24
1445 tristate "ACCES PCIe-IDIO-24 GPIO support"
1446 select GPIOLIB_IRQCHIP
1448 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1449 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1450 when any of the inputs change state (low to high or high to low).
1451 Input filter control is not supported by this driver, and the input
1452 filters are deactivated by this driver.
1455 tristate "RDC R-321x GPIO support"
1459 Support for the RDC R321x SoC GPIOs over southbridge
1460 PCI configuration space.
1462 config GPIO_SODAVILLE
1463 bool "Intel Sodaville GPIO support"
1464 depends on X86 && OF
1466 select GENERIC_IRQ_CHIP
1468 Say Y here to support Intel Sodaville GPIO.
1472 menu "SPI GPIO expanders"
1473 depends on SPI_MASTER
1476 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1479 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1480 shift registers. This driver can be used to provide access
1481 to more gpio outputs.
1483 config GPIO_MAX3191X
1484 tristate "Maxim MAX3191x industrial serializer"
1487 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1488 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1489 chip to make 8 digital 24V inputs available via SPI. Supports
1490 CRC checksums to guard against electromagnetic interference,
1491 as well as undervoltage and overtemperature detection.
1494 tristate "Maxim MAX7301 GPIO expander"
1497 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1500 tristate "Freescale MC33880 high-side/low-side switch"
1502 SPI driver for Freescale MC33880 high-side/low-side switch.
1503 This provides GPIO interface supporting inputs and outputs.
1506 tristate "Generic parallel-in/serial-out shift register"
1508 GPIO driver for SPI compatible parallel-in/serial-out shift
1509 registers. These are input only devices.
1512 tristate "EXAR XRA1403 16-bit GPIO expander"
1515 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1518 tristate "Turris Mox Moxtet bus GPIO expander"
1521 Say yes here if you are building for the Turris Mox router.
1522 This is the driver needed for configuring the GPIOs via the Moxtet
1523 bus. For example the Mox module with SFP cage needs this driver
1524 so that phylink can use corresponding GPIOs.
1528 menu "USB GPIO expanders"
1531 config GPIO_VIPERBOARD
1532 tristate "Viperboard GPIO a & b support"
1533 depends on MFD_VIPERBOARD
1535 Say yes here to access the GPIO signals of Nano River
1536 Technologies Viperboard. There are two GPIO chips on the
1537 board: gpioa and gpiob.
1538 See viperboard API specification and Nano
1539 River Tech's viperboard.h for detailed meaning
1540 of the module parameters.
1544 config GPIO_AGGREGATOR
1545 tristate "GPIO Aggregator"
1547 Say yes here to enable the GPIO Aggregator, which provides a way to
1548 aggregate existing GPIO lines into a new virtual GPIO chip.
1549 This can serve the following purposes:
1550 - Assign permissions for a collection of GPIO lines to a user,
1551 - Export a collection of GPIO lines to a virtual machine,
1552 - Provide a generic driver for a GPIO-operated device in an
1553 industrial control context, to be operated from userspace using
1554 the GPIO chardev interface.
1557 tristate "GPIO Testing Driver"
1560 This enables GPIO Testing driver, which provides a way to test GPIO
1561 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1562 must be selected for this test.
1563 User could use it through the script in
1564 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in