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
80 # put drivers in the right section, in alphabetical order
82 # This symbol is selected by both I2C and SPI expanders
86 menu "Memory mapped GPIO drivers"
90 tristate "GPIO driver for 74xx-ICs with MMIO access"
94 Say yes here to support GPIO functionality for 74xx-compatible ICs
95 with MMIO access. Compatible models include:
96 1 bit: 741G125 (Input), 741G74 (Output)
97 2 bits: 742G125 (Input), 7474 (Output)
98 4 bits: 74125 (Input), 74175 (Output)
99 6 bits: 74365 (Input), 74174 (Output)
100 8 bits: 74244 (Input), 74273 (Output)
101 16 bits: 741624 (Input), 7416374 (Output)
104 tristate "Altera GPIO"
106 select GPIOLIB_IRQCHIP
108 Say Y or M here to build support for the Altera PIO device.
110 If driver is built as a module it will be called gpio-altera.
113 tristate "AMD Promontory GPIO support"
117 driver for GPIO functionality on Promontory IOHub
118 Require ACPI ASL code to enumerate as a platform device.
121 tristate "Aspeed GPIO support"
122 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
123 select GPIOLIB_IRQCHIP
125 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
127 config GPIO_ASPEED_SGPIO
128 bool "Aspeed SGPIO support"
129 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
131 select GPIOLIB_IRQCHIP
133 Say Y here to support Aspeed AST2500 SGPIO functionality.
136 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
138 depends on ATH79 || COMPILE_TEST
140 select GPIOLIB_IRQCHIP
142 Select this option to enable GPIO driver for
143 Atheros AR71XX/AR724X/AR913X SoC devices.
145 config GPIO_RASPBERRYPI_EXP
146 tristate "Raspberry Pi 3 GPIO Expander"
147 default RASPBERRYPI_FIRMWARE
149 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
150 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
151 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
153 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
154 the firmware mailbox to communicate with VideoCore on BCM283x chips.
157 bool "Broadcom Kona GPIO"
158 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
160 Turn on GPIO support for Broadcom "Kona" chips.
162 config GPIO_BCM_XGS_IPROC
163 tristate "BRCM XGS iProc GPIO support"
164 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
166 select GPIOLIB_IRQCHIP
167 default ARCH_BCM_IPROC
169 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
172 tristate "BRCMSTB GPIO support"
173 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
174 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
178 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
181 tristate "Cadence GPIO support"
184 select GPIOLIB_IRQCHIP
186 Say yes here to enable support for Cadence GPIO controller.
189 tristate "CLPS711X GPIO support"
190 depends on ARCH_CLPS711X || COMPILE_TEST
193 Say yes here to support GPIO on CLPS711X SoCs.
196 bool "TI Davinci/Keystone GPIO support"
197 default y if ARCH_DAVINCI
198 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
200 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
203 tristate "Synopsys DesignWare APB GPIO driver"
205 select GENERIC_IRQ_CHIP
207 Say Y or M here to build support for the Synopsys DesignWare APB
211 tristate "Spreadtrum EIC support"
212 depends on ARCH_SPRD || COMPILE_TEST
214 select GPIOLIB_IRQCHIP
216 Say yes here to support Spreadtrum EIC device.
219 tristate "Emma Mobile GPIO"
220 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
222 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
226 depends on ARCH_EP93XX
228 select GPIOLIB_IRQCHIP
231 tristate "Support for GPIO pins on XR17V352/354/358"
232 depends on SERIAL_8250_EXAR
234 Selecting this option will enable handling of GPIO pins present
235 on Exar XR17V352/354/358 chips.
238 bool "GE FPGA based GPIO"
242 Support for common GPIO functionality provided on some GE Single Board
245 This driver provides basic support (configure as input or output, read
246 and write pin state) for GPIO implemented in a number of GE single
249 config GPIO_FTGPIO010
250 bool "Faraday FTGPIO010 GPIO"
253 select GPIOLIB_IRQCHIP
254 default (ARCH_GEMINI || ARCH_MOXART)
256 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
257 Cortina systems Gemini platforms, Moxa ART and others.
259 config GPIO_GENERIC_PLATFORM
260 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
263 Say yes here to support basic platform_device memory-mapped GPIO controllers.
266 tristate "Aeroflex Gaisler GRGPIO support"
271 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
272 VHDL IP core library.
275 tristate "Nintendo Wii (Hollywood) GPIO"
278 select GPIOLIB_IRQCHIP
280 Select this to support the GPIO controller of the Nintendo Wii.
285 tristate "Intel ICH GPIO"
286 depends on PCI && X86
290 Say yes here to support the GPIO functionality of a number of Intel
291 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
292 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
293 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
298 tristate "Intel IOP GPIO"
299 depends on ARCH_IOP32X || COMPILE_TEST
302 Say yes here to support the GPIO functionality of a number of Intel
308 bool "Intel IXP4xx GPIO"
309 depends on ARM # For <asm/mach-types.h>
310 depends on ARCH_IXP4XX
312 select GPIOLIB_IRQCHIP
313 select IRQ_DOMAIN_HIERARCHY
315 Say yes here to support the GPIO functionality of a number of Intel
316 IXP4xx series of chips.
320 tristate "Xylon LogiCVC GPIO support"
321 depends on MFD_SYSCON && OF
323 Say yes here to support GPIO functionality of the Xylon LogiCVC
324 programmable logic block.
327 bool "Loongson-2/3 GPIO support"
328 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
330 driver for GPIO functionality on Loongson-2F/3A/3B processors.
333 tristate "NXP LPC18XX/43XX GPIO support"
334 default y if ARCH_LPC18XX
335 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
336 select IRQ_DOMAIN_HIERARCHY
338 Select this option to enable GPIO driver for
339 NXP LPC18XX/43XX devices.
342 tristate "NXP LPC32XX GPIO support"
343 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
345 Select this option to enable GPIO driver for
349 tristate "GPIO support for Fujitsu MB86S7x Platforms"
351 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
354 tristate "MEN 16Z127 GPIO support"
358 Say yes here to support the MEN 16Z127 GPIO Controller
360 config GPIO_MM_LANTIQ
361 bool "Lantiq Memory mapped GPIOs"
362 depends on LANTIQ && SOC_XWAY
364 This enables support for memory mapped GPIOs on the External Bus Unit
365 (EBU) found on Lantiq SoCs. The gpios are output only as they are
366 created by attaching a 16bit latch to the bus.
370 depends on PPC_MPC52xx
373 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
374 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
375 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
380 Say Y here if you're going to use hardware that connects to the
381 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
384 bool "Mediatek MT7621 GPIO Support"
385 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
388 select GPIOLIB_IRQCHIP
390 Say yes here to support the Mediatek MT7621 SoC GPIO device
394 depends on PLAT_ORION || ARCH_MVEBU
396 select GENERIC_IRQ_CHIP
401 depends on ARCH_MXC || COMPILE_TEST
403 select GENERIC_IRQ_CHIP
407 depends on ARCH_MXS || COMPILE_TEST
409 select GENERIC_IRQ_CHIP
412 tristate "Cavium OCTEON GPIO"
413 depends on GPIOLIB && CAVIUM_OCTEON_SOC
416 Say yes here to support the on-chip GPIO lines on the OCTEON
420 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
421 default y if ARCH_OMAP
423 select GENERIC_IRQ_CHIP
424 select GPIOLIB_IRQCHIP
426 Say yes here to enable GPIO support for TI OMAP SoCs.
429 tristate "PrimeCell PL061 GPIO support"
432 select GPIOLIB_IRQCHIP
434 Say yes here to support the PrimeCell PL061 GPIO device
436 config GPIO_PMIC_EIC_SPRD
437 tristate "Spreadtrum PMIC EIC support"
438 depends on MFD_SC27XX_PMIC || COMPILE_TEST
440 select GPIOLIB_IRQCHIP
442 Say yes here to support Spreadtrum PMIC EIC device.
445 bool "PXA GPIO support"
446 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
448 Say yes here to support the PXA GPIO device
451 tristate "Renesas R-Car GPIO"
452 depends on ARCH_RENESAS || COMPILE_TEST
453 select GPIOLIB_IRQCHIP
455 Say yes here to support GPIO on Renesas R-Car SoCs.
458 bool "RDA Micro GPIO controller support"
459 depends on ARCH_RDA || COMPILE_TEST
462 select GPIOLIB_IRQCHIP
464 Say Y here to support RDA Micro GPIO controller.
469 A 32-bit single register GPIO fixed in/out implementation. This
470 can be used to represent any register as a set of GPIO signals.
472 config GPIO_SAMA5D2_PIOBU
473 tristate "SAMA5D2 PIOBU GPIO support"
474 depends on MFD_SYSCON
478 Say yes here to use the PIOBU pins as GPIOs.
480 PIOBU pins on the SAMA5D2 can be used as GPIOs.
481 The difference from regular GPIOs is that they
482 maintain their value during backup/self-refresh.
485 bool "SiFive GPIO support"
486 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
488 select GPIOLIB_IRQCHIP
491 Say yes here to support the GPIO device on SiFive SoCs.
494 tristate "SIOX GPIO support"
496 select GPIOLIB_IRQCHIP
498 Say yes here to support SIOX I/O devices. These are units connected
499 via a SIOX bus and have a number of fixed-direction I/O lines.
501 config GPIO_SNPS_CREG
502 bool "Synopsys GPIO via CREG (Control REGisters) driver"
503 depends on ARC || COMPILE_TEST
506 This driver supports GPIOs via CREG on various Synopsys SoCs.
507 This is a single-register MMIO GPIO driver for complex cases
508 where only several fields in register belong to GPIO lines and
509 each GPIO line owns a field with different length and on/off value.
511 config GPIO_SPEAR_SPICS
512 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
513 depends on PLAT_SPEAR
514 select GENERIC_IRQ_CHIP
516 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
519 tristate "Spreadtrum GPIO support"
520 depends on ARCH_SPRD || COMPILE_TEST
522 select GPIOLIB_IRQCHIP
524 Say yes here to support Spreadtrum GPIO device.
527 bool "STA2x11/ConneXt GPIO support"
528 depends on MFD_STA2X11
529 select GENERIC_IRQ_CHIP
531 Say yes here to support the STA2x11/ConneXt GPIO device.
532 The GPIO module has 128 GPIO pins with alternate functions.
535 bool "XWAY STP GPIOs"
536 depends on SOC_XWAY || COMPILE_TEST
539 This enables support for the Serial To Parallel (STP) unit found on
540 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
541 that can be up to 24 bit. This peripheral is aimed at driving leds.
542 Some of the gpios/leds can be auto updated by the soc with dsl and
546 tristate "GPIO based on SYSCON"
547 depends on MFD_SYSCON && OF
549 Say yes here to support GPIO functionality though SYSCON driver.
554 select GENERIC_IRQ_CHIP
558 bool "NVIDIA Tegra GPIO support"
560 depends on ARCH_TEGRA || COMPILE_TEST
563 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
566 tristate "NVIDIA Tegra186 GPIO support"
567 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
568 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
570 select GPIOLIB_IRQCHIP
571 select IRQ_DOMAIN_HIERARCHY
573 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
576 tristate "TS-4800 DIO blocks and compatibles"
578 depends on SOC_IMX51 || COMPILE_TEST
581 This driver support TS-4800 FPGA GPIO controllers.
584 tristate "Cavium ThunderX/OCTEON-TX GPIO"
585 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
587 select GPIOLIB_IRQCHIP
588 select IRQ_DOMAIN_HIERARCHY
589 select IRQ_FASTEOI_HIERARCHY_HANDLERS
591 Say yes here to support the on-chip GPIO lines on the ThunderX
592 and OCTEON-TX families of SoCs.
595 tristate "UniPhier GPIO support"
596 depends on ARCH_UNIPHIER || COMPILE_TEST
598 select IRQ_DOMAIN_HIERARCHY
600 Say yes here to support UniPhier GPIOs.
604 depends on ARCH_MXC && SOC_VF610
605 select GPIOLIB_IRQCHIP
607 Say yes here to support Vybrid vf610 GPIOs.
610 tristate "NEC VR4100 series General-purpose I/O Uint support"
611 depends on CPU_VR41XX
613 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
616 tristate "VIA VX855/VX875 GPIO"
617 depends on (X86 || COMPILE_TEST) && PCI
621 Support access to the VX855/VX875 GPIO lines through the gpio library.
623 This driver provides common support for accessing the device,
624 additional drivers must be enabled in order to use the
625 functionality of the device.
628 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
629 depends on MFD_WCD934X && OF_GPIO
631 This driver is to supprot GPIO block found on the Qualcomm Technologies
632 Inc WCD9340/WCD9341 Audio Codec.
635 bool "APM X-Gene GPIO controller support"
636 depends on ARM64 && OF_GPIO
638 This driver is to support the GPIO block within the APM X-Gene SoC
639 platform's generic flash controller. The GPIO pins are muxed with
640 the generic flash controller's address and data pins. Say yes
641 here to enable the GFC GPIO functionality.
644 tristate "APM X-Gene GPIO standby controller support"
645 depends on (ARCH_XGENE || COMPILE_TEST)
647 select GPIOLIB_IRQCHIP
648 select IRQ_DOMAIN_HIERARCHY
650 This driver supports the GPIO block within the APM X-Gene
651 Standby Domain. Say yes here to enable the GPIO functionality.
654 tristate "Xilinx GPIO support"
656 Say yes here to support the Xilinx FPGA GPIO device
659 tristate "Netlogic XLP GPIO support"
660 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
661 select GPIOLIB_IRQCHIP
663 This driver provides support for GPIO interface on Netlogic XLP MIPS64
664 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
665 XLP9XX and XLP5XX. The same GPIO controller block is also present in
666 Cavium's ThunderX2 CN99XX SoCs.
671 bool "Xtensa GPIO32 support"
673 depends on HAVE_XTENSA_GPIO32
676 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
677 and EXPSTATE (output) ports
680 bool "LSI ZEVIO SoC memory mapped GPIOs"
681 depends on ARM && OF_GPIO
683 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
686 tristate "Xilinx Zynq GPIO support"
687 depends on ARCH_ZYNQ || ARCH_ZYNQMP
688 select GPIOLIB_IRQCHIP
690 Say yes here to support Xilinx Zynq GPIO controller.
693 bool "ZTE ZX GPIO support"
694 depends on ARCH_ZX || COMPILE_TEST
695 select GPIOLIB_IRQCHIP
697 Say yes here to support the GPIO device on ZTE ZX SoCs.
699 config GPIO_LOONGSON1
700 tristate "Loongson1 GPIO support"
701 depends on MACH_LOONGSON32
704 Say Y or M here to support GPIO on Loongson1 SoCs.
707 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
709 This option enables driver for GPIO on AMDs Fusion Controller Hub,
710 as found on G-series SOCs (eg. GX-412TC)
712 Note: This driver doesn't registers itself automatically, as it
713 needs to be provided with platform specific configuration.
714 (See eg. CONFIG_PCENGINES_APU2.)
717 menu "Port-mapped I/O GPIO drivers"
718 depends on X86 # Unconditional I/O space access
720 config GPIO_104_DIO_48E
721 tristate "ACCES 104-DIO-48E GPIO support"
724 select GPIOLIB_IRQCHIP
726 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
727 104-DIO-24E). The base port addresses for the devices may be
728 configured via the base module parameter. The interrupt line numbers
729 for the devices may be configured via the irq module parameter.
731 config GPIO_104_IDIO_16
732 tristate "ACCES 104-IDIO-16 GPIO support"
735 select GPIOLIB_IRQCHIP
737 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
738 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
739 base port addresses for the devices may be configured via the base
740 module parameter. The interrupt line numbers for the devices may be
741 configured via the irq module parameter.
743 config GPIO_104_IDI_48
744 tristate "ACCES 104-IDI-48 GPIO support"
747 select GPIOLIB_IRQCHIP
749 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
750 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
751 the devices may be configured via the base module parameter. The
752 interrupt line numbers for the devices may be configured via the irq
756 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
758 This option enables support for GPIOs found on Fintek Super-I/O
759 chips F71869, F71869A, F71882FG, F71889F and F81866.
761 To compile this driver as a module, choose M here: the module will
762 be called f7188x-gpio.
765 tristate "Diamond Systems GPIO-MM GPIO support"
769 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
771 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
772 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
773 support for these 48 channels of digital I/O.
775 The base port addresses for the devices may be configured via the base
776 array module parameter.
779 tristate "IT87xx GPIO support"
781 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
783 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
784 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
787 To compile this driver as a module, choose M here: the module will
791 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
792 depends on (X86 || COMPILE_TEST) && PCI
796 Say yes here to support GPIO interface on Intel Poulsbo SCH,
797 Intel Tunnel Creek processor, Intel Centerton processor or
798 Intel Quark X1000 SoC.
800 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
801 powered by the core power rail and are turned off during sleep
802 modes (S3 and higher). The remaining four GPIOs are powered by
803 the Intel SCH suspend power supply. These GPIOs remain
804 active during S3. The suspend powered GPIOs can be used to wake the
805 system from the Suspend-to-RAM state.
807 The Intel Tunnel Creek processor has 5 GPIOs powered by the
808 core power rail and 9 from suspend power supply.
810 The Intel Centerton processor has a total of 30 GPIO pins.
811 Twenty-one are powered by the core power rail and 9 from the
812 suspend power supply.
814 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
815 power well and 6 from the suspend power well.
818 tristate "SMSC SCH311x SuperI/O GPIO"
820 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
821 SCH3116 "Super I/O" chipsets.
823 To compile this driver as a module, choose M here: the module will
824 be called gpio-sch311x.
827 tristate "TS-5500 DIO blocks and compatibles"
828 depends on TS5500 || COMPILE_TEST
830 This driver supports Digital I/O exposed by pin blocks found on some
831 Technologic Systems platforms. It includes, but is not limited to, 3
832 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
836 tristate "Winbond Super I/O GPIO support"
839 This option enables support for GPIOs found on Winbond Super I/O
841 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
844 You will need to provide a module parameter "gpios", or a
845 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
846 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
848 To compile this driver as a module, choose M here: the module will
849 be called gpio-winbond.
852 tristate "WinSystems WS16C48 GPIO support"
854 select GPIOLIB_IRQCHIP
856 Enables GPIO support for the WinSystems WS16C48. The base port
857 addresses for the devices may be configured via the base module
858 parameter. The interrupt line numbers for the devices may be
859 configured via the irq module parameter.
863 menu "I2C GPIO expanders"
867 tristate "ADP5588 I2C GPIO expander"
869 This option enables support for 18 GPIOs found
870 on Analog Devices ADP5588 GPIO Expanders.
872 config GPIO_ADP5588_IRQ
873 bool "Interrupt controller support for ADP5588"
874 depends on GPIO_ADP5588=y
875 select GPIOLIB_IRQCHIP
877 Say yes here to enable the adp5588 to be used as an interrupt
878 controller. It requires the driver to be built in the kernel.
881 tristate "Avionic Design N-bit GPIO expander"
883 select GPIOLIB_IRQCHIP
885 This option enables support for N GPIOs found on Avionic Design
886 I2C GPIO expanders. The register space will be extended by powers
887 of two, so the controller will need to accommodate for that. For
888 example: if a controller provides 48 pins, 6 registers will be
889 enough to represent all pins, but the driver will assume a
890 register layout for 64 pins (8 registers).
893 tristate "Gateworks PLD GPIO Expander"
896 Say yes here to provide access to the Gateworks I2C PLD GPIO
897 Expander. This is used at least on the Cambria GW2358-4.
900 tristate "Maxim MAX7300 GPIO expander"
903 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
906 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
908 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
909 Port Expanders. Each IO port on these chips has a fixed role of
910 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
911 Input and Output (designed by 'P'). The combinations are listed
914 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
915 max7322 (4I4O), max7323 (4P4O)
917 16 bits: max7324 (8I8O), max7325 (8P8O),
918 max7326 (4I12O), max7327 (4P12O)
920 Board setup code must specify the model to use, and the start
921 number for these GPIOs.
923 config GPIO_MAX732X_IRQ
924 bool "Interrupt controller support for MAX732x"
925 depends on GPIO_MAX732X=y
926 select GPIOLIB_IRQCHIP
928 Say yes here to enable the max732x to be used as an interrupt
929 controller. It requires the driver to be built in the kernel.
931 config GPIO_MC9S08DZ60
932 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
933 depends on I2C=y && MACH_MX35_3DS
935 Select this to enable the MC9S08DZ60 GPIO driver
938 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
941 Say yes here to provide access to several register-oriented
942 SMBus I/O expanders, made mostly by NXP or TI. Compatible
945 4 bits: pca9536, pca9537
947 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
948 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
950 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
955 40 bits: pca9505, pca9698
957 config GPIO_PCA953X_IRQ
958 bool "Interrupt controller support for PCA953x"
959 depends on GPIO_PCA953X
960 select GPIOLIB_IRQCHIP
962 Say yes here to enable the pca953x to be used as an interrupt
963 controller. It requires the driver to be built in the kernel.
966 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
967 select GPIOLIB_IRQCHIP
970 Say yes here to provide access to most "quasi-bidirectional" I2C
971 GPIO expanders used for additional digital outputs or inputs.
972 Most of these parts are from NXP, though TI is a second source for
973 some of them. Compatible models include:
975 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
976 pca9670, pca9672, pca9674, pca9674a,
979 16 bits: pcf8575, pcf8575c, pca8575,
980 pca9671, pca9673, pca9675
982 Your board setup code will need to declare the expanders in
983 use, and assign numbers to the GPIOs they expose. Those GPIOs
984 can then be used from drivers and other kernel code, just like
985 other GPIOs, but only accessible from task contexts.
987 This driver provides an in-kernel interface to those GPIOs using
988 platform-neutral GPIO calls.
991 tristate "TPIC2810 8-Bit I2C GPO expander"
993 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
995 To compile this driver as a module, choose M here: the module will
996 be called gpio-tpic2810.
999 tristate "Technologic Systems FPGA I2C GPIO"
1000 depends on SOC_IMX6 || COMPILE_TEST
1003 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1004 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1008 menu "MFD GPIO expanders"
1011 tristate "GPIO Support for ADP5520 PMIC"
1012 depends on PMIC_ADP5520
1014 This option enables support for on-chip GPIO found
1015 on Analog Devices ADP5520 PMICs.
1017 config GPIO_ALTERA_A10SR
1018 tristate "Altera Arria10 System Resource GPIO"
1019 depends on MFD_ALTERA_A10SR
1021 Driver for Arria10 Development Kit GPIO expansion which
1022 includes reads of pushbuttons and DIP switches as well
1026 tristate "Wolfson Microelectronics Arizona class devices"
1027 depends on MFD_ARIZONA
1029 Support for GPIOs on Wolfson Arizona class devices.
1032 tristate "ROHM BD70528 GPIO support"
1033 depends on MFD_ROHM_BD70528
1035 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1036 available on the ROHM PMIC in total. The GPIOs can also
1037 generate interrupts.
1039 This driver can also be built as a module. If so, the module
1040 will be called gpio-bd70528.
1043 tristate "ROHM BD71828 GPIO support"
1044 depends on MFD_ROHM_BD71828
1046 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1047 available on the ROHM PMIC in total. The GPIOs are limited to
1048 outputs only and pins must be configured to GPIO outputs by
1049 OTP. Enable this only if you want to use these pins as outputs.
1051 This driver can also be built as a module. If so, the module
1052 will be called gpio-bd71828.
1054 config GPIO_BD9571MWV
1055 tristate "ROHM BD9571 GPIO support"
1056 depends on MFD_BD9571MWV
1058 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1059 available on the ROHM PMIC in total, both of which can also
1060 generate interrupts.
1062 This driver can also be built as a module. If so, the module
1063 will be called gpio-bd9571mwv.
1065 config GPIO_CRYSTAL_COVE
1066 tristate "GPIO support for Crystal Cove PMIC"
1067 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1068 select GPIOLIB_IRQCHIP
1070 Support for GPIO pins on Crystal Cove PMIC.
1072 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1075 This driver can also be built as a module. If so, the module will be
1076 called gpio-crystalcove.
1079 tristate "AMD CS5535/CS5536 GPIO support"
1080 depends on X86 || MIPS || COMPILE_TEST
1081 depends on MFD_CS5535
1083 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1084 can be used for quite a number of things. The CS5535/6 is found on
1085 AMD Geode and Lemote Yeeloong devices.
1090 tristate "Dialog DA9052 GPIO"
1091 depends on PMIC_DA9052
1093 Say yes here to enable the GPIO driver for the DA9052 chip.
1096 tristate "Dialog Semiconductor DA9055 GPIO"
1097 depends on MFD_DA9055
1099 Say yes here to enable the GPIO driver for the DA9055 chip.
1101 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1102 be controller by this driver.
1104 If driver is built as a module it will be called gpio-da9055.
1107 tristate "Diolan DLN2 GPIO support"
1109 select GPIOLIB_IRQCHIP
1112 Select this option to enable GPIO driver for the Diolan DLN2
1115 This driver can also be built as a module. If so, the module
1116 will be called gpio-dln2.
1119 bool "HTC EGPIO support"
1120 depends on GPIOLIB && ARM
1122 This driver supports the CPLD egpio chip present on
1123 several HTC phones. It provides basic support for input
1124 pins, output pins, and irqs.
1126 config GPIO_JANZ_TTL
1127 tristate "Janz VMOD-TTL Digital IO Module"
1128 depends on MFD_JANZ_CMODIO
1130 This enables support for the Janz VMOD-TTL Digital IO module.
1131 This driver provides support for driving the pins in output
1132 mode only. Input mode is not supported.
1135 tristate "Kontron ETX / COMexpress GPIO"
1136 depends on MFD_KEMPLD
1138 This enables support for the PLD GPIO interface on some Kontron ETX
1139 and COMexpress (ETXexpress) modules.
1141 This driver can also be built as a module. If so, the module will be
1145 tristate "TI/National Semiconductor LP3943 GPIO expander"
1146 depends on MFD_LP3943
1148 GPIO driver for LP3943 MFD.
1149 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1150 Open drain outputs are required for this usage.
1153 tristate "TI LP873X GPO"
1154 depends on MFD_TI_LP873X
1156 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1159 This driver can also be built as a module. If so, the module will be
1163 tristate "TI LP87565 GPIO"
1164 depends on MFD_TI_LP87565
1166 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1169 This driver can also be built as a module. If so, the module will be
1170 called gpio-lp87565.
1173 tristate "Cirrus Logic Madera class codecs"
1174 depends on PINCTRL_MADERA
1176 Support for GPIOs on Cirrus Logic Madera class codecs.
1178 config GPIO_MAX77620
1179 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1180 depends on MFD_MAX77620
1181 select GPIOLIB_IRQCHIP
1183 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1184 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1185 driver also provides interrupt support for each of the gpios.
1186 Say yes here to enable the max77620 to be used as gpio controller.
1188 config GPIO_MAX77650
1189 tristate "Maxim MAX77650/77651 GPIO support"
1190 depends on MFD_MAX77650
1192 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1193 These chips have a single pin that can be configured as GPIO.
1196 bool "Intel MSIC mixed signal gpio support"
1197 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1199 Enable support for GPIO on intel MSIC controllers found in
1203 bool "TI PALMAS series PMICs GPIO"
1204 depends on MFD_PALMAS
1206 Select this option to enable GPIO driver for the TI PALMAS
1210 bool "RICOH RC5T583 GPIO"
1211 depends on MFD_RC5T583
1213 Select this option to enable GPIO driver for the Ricoh RC5T583
1215 This driver provides the support for driving/reading the gpio pins
1216 of RC5T583 device through standard gpio library.
1220 depends on MFD_STMPE
1222 select GPIOLIB_IRQCHIP
1224 This enables support for the GPIOs found on the STMPE I/O
1228 bool "TC3589X GPIOs"
1229 depends on MFD_TC3589X
1231 select GPIOLIB_IRQCHIP
1233 This enables support for the GPIOs found on the TC3589X
1236 config GPIO_TIMBERDALE
1237 bool "Support for timberdale GPIO IP"
1238 depends on MFD_TIMBERDALE
1240 Add support for the GPIO IP in the timberdale FPGA.
1242 config GPIO_TPS65086
1243 tristate "TI TPS65086 GPO"
1244 depends on MFD_TPS65086
1246 This driver supports the GPO on TI TPS65086x PMICs.
1248 config GPIO_TPS65218
1249 tristate "TPS65218 GPIO"
1250 depends on MFD_TPS65218
1252 Select this option to enable GPIO driver for the TPS65218
1255 config GPIO_TPS6586X
1256 bool "TPS6586X GPIO"
1257 depends on MFD_TPS6586X
1259 Select this option to enable GPIO driver for the TPS6586X
1262 config GPIO_TPS65910
1263 bool "TPS65910 GPIO"
1264 depends on MFD_TPS65910
1266 Select this option to enable GPIO driver for the TPS65910
1269 config GPIO_TPS65912
1270 tristate "TI TPS65912 GPIO"
1271 depends on MFD_TPS65912
1273 This driver supports TPS65912 gpio chip
1275 config GPIO_TPS68470
1276 bool "TPS68470 GPIO"
1277 depends on MFD_TPS68470
1279 Select this option to enable GPIO driver for the TPS68470
1281 There are 7 GPIOs and few sensor related GPIOs supported
1282 by the TPS68470. While the 7 GPIOs can be configured as
1283 input or output as appropriate, the sensor related GPIOs
1284 are "output only" GPIOs.
1286 This driver config is bool, as the GPIO functionality
1287 of the TPS68470 must be available before dependent
1291 tristate "TQ-Systems QTMX86 GPIO"
1292 depends on MFD_TQMX86 || COMPILE_TEST
1293 select GPIOLIB_IRQCHIP
1295 This driver supports GPIO on the TQMX86 IO controller.
1298 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1299 depends on TWL4030_CORE
1301 Say yes here to access the GPIO signals of various multi-function
1302 power management chips from Texas Instruments.
1305 tristate "TWL6040 GPO"
1306 depends on TWL6040_CORE
1308 Say yes here to access the GPO signals of twl6040
1309 audio chip from Texas Instruments.
1312 tristate "Philips UCB1400 GPIO"
1313 depends on UCB1400_CORE
1315 This enables support for the Philips UCB1400 GPIO pins.
1316 The UCB1400 is an AC97 audio codec.
1318 config GPIO_WHISKEY_COVE
1319 tristate "GPIO support for Whiskey Cove PMIC"
1320 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1321 select GPIOLIB_IRQCHIP
1323 Support for GPIO pins on Whiskey Cove PMIC.
1325 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1328 This driver can also be built as a module. If so, the module will be
1332 tristate "WM831x GPIOs"
1333 depends on MFD_WM831X
1335 Say yes here to access the GPIO signals of WM831x power management
1336 chips from Wolfson Microelectronics.
1339 tristate "WM8350 GPIOs"
1340 depends on MFD_WM8350
1342 Say yes here to access the GPIO signals of WM8350 power management
1343 chips from Wolfson Microelectronics.
1346 tristate "WM8994 GPIOs"
1347 depends on MFD_WM8994
1349 Say yes here to access the GPIO signals of WM8994 audio hub
1350 CODECs from Wolfson Microelectronics.
1354 menu "PCI GPIO expanders"
1358 tristate "AMD 8111 GPIO driver"
1359 depends on X86 || COMPILE_TEST
1361 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1363 Note, that usually system firmware/ACPI handles GPIO pins on their
1364 own and users might easily break their systems with uncarefull usage
1370 tristate "BT8XX GPIO abuser"
1371 depends on VIDEO_BT848=n
1373 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1374 as a cheap PCI GPIO card.
1376 This chip can be found on Miro, Hauppauge and STB TV-cards.
1378 The card needs to be physically altered for using it as a
1379 GPIO card. For more information on how to build a GPIO card
1380 from a BT8xx TV card, see the documentation file at
1381 Documentation/driver-api/gpio/bt8xxgpio.rst
1385 config GPIO_INTEL_MID
1386 bool "Intel MID GPIO support"
1387 depends on X86_INTEL_MID
1388 select GPIOLIB_IRQCHIP
1390 Say Y here to support Intel MID GPIO.
1392 config GPIO_MERRIFIELD
1393 tristate "Intel Merrifield GPIO support"
1394 depends on X86_INTEL_MID
1395 select GPIOLIB_IRQCHIP
1397 Say Y here to support Intel Merrifield GPIO.
1400 tristate "Mellanox BlueField SoC GPIO"
1401 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1404 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1407 tristate "Mellanox BlueField 2 SoC GPIO"
1408 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1411 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1414 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1415 depends on X86 || COMPILE_TEST
1416 select GENERIC_IRQ_CHIP
1418 ML7213 is companion chip for Intel Atom E6xx series.
1419 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1420 Hub) which is for IVI(In-Vehicle Infotainment) use.
1421 This driver can access the IOH's GPIO device.
1424 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1425 depends on X86_32 || MIPS || COMPILE_TEST
1426 select GENERIC_IRQ_CHIP
1428 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1429 which is an IOH(Input/Output Hub) for x86 embedded processor.
1430 This driver can access PCH GPIO device.
1432 This driver also can be used for LAPIS Semiconductor IOH(Input/
1433 Output Hub), ML7223 and ML7831.
1434 ML7223 IOH is for MP(Media Phone) use.
1435 ML7831 IOH is for general purpose use.
1436 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1437 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1439 config GPIO_PCI_IDIO_16
1440 tristate "ACCES PCI-IDIO-16 GPIO support"
1441 select GPIOLIB_IRQCHIP
1443 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1444 generated when any of the inputs change state (low to high or high to
1445 low). Input filter control is not supported by this driver, and the
1446 input filters are deactivated by this driver.
1448 config GPIO_PCIE_IDIO_24
1449 tristate "ACCES PCIe-IDIO-24 GPIO support"
1450 select GPIOLIB_IRQCHIP
1452 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1453 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1454 when any of the inputs change state (low to high or high to low).
1455 Input filter control is not supported by this driver, and the input
1456 filters are deactivated by this driver.
1459 tristate "RDC R-321x GPIO support"
1463 Support for the RDC R321x SoC GPIOs over southbridge
1464 PCI configuration space.
1466 config GPIO_SODAVILLE
1467 bool "Intel Sodaville GPIO support"
1468 depends on X86 && OF
1470 select GENERIC_IRQ_CHIP
1472 Say Y here to support Intel Sodaville GPIO.
1476 menu "SPI GPIO expanders"
1477 depends on SPI_MASTER
1480 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1483 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1484 shift registers. This driver can be used to provide access
1485 to more gpio outputs.
1487 config GPIO_MAX3191X
1488 tristate "Maxim MAX3191x industrial serializer"
1491 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1492 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1493 chip to make 8 digital 24V inputs available via SPI. Supports
1494 CRC checksums to guard against electromagnetic interference,
1495 as well as undervoltage and overtemperature detection.
1498 tristate "Maxim MAX7301 GPIO expander"
1501 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1504 tristate "Freescale MC33880 high-side/low-side switch"
1506 SPI driver for Freescale MC33880 high-side/low-side switch.
1507 This provides GPIO interface supporting inputs and outputs.
1510 tristate "Generic parallel-in/serial-out shift register"
1512 GPIO driver for SPI compatible parallel-in/serial-out shift
1513 registers. These are input only devices.
1516 tristate "EXAR XRA1403 16-bit GPIO expander"
1519 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1522 tristate "Turris Mox Moxtet bus GPIO expander"
1525 Say yes here if you are building for the Turris Mox router.
1526 This is the driver needed for configuring the GPIOs via the Moxtet
1527 bus. For example the Mox module with SFP cage needs this driver
1528 so that phylink can use corresponding GPIOs.
1532 menu "USB GPIO expanders"
1535 config GPIO_VIPERBOARD
1536 tristate "Viperboard GPIO a & b support"
1537 depends on MFD_VIPERBOARD
1539 Say yes here to access the GPIO signals of Nano River
1540 Technologies Viperboard. There are two GPIO chips on the
1541 board: gpioa and gpiob.
1542 See viperboard API specification and Nano
1543 River Tech's viperboard.h for detailed meaning
1544 of the module parameters.
1548 config GPIO_AGGREGATOR
1549 tristate "GPIO Aggregator"
1551 Say yes here to enable the GPIO Aggregator, which provides a way to
1552 aggregate existing GPIO lines into a new virtual GPIO chip.
1553 This can serve the following purposes:
1554 - Assign permissions for a collection of GPIO lines to a user,
1555 - Export a collection of GPIO lines to a virtual machine,
1556 - Provide a generic driver for a GPIO-operated device in an
1557 industrial control context, to be operated from userspace using
1558 the GPIO chardev interface.
1561 tristate "GPIO Testing Driver"
1564 This enables GPIO Testing driver, which provides a way to test GPIO
1565 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1566 must be selected for this test.
1567 User could use it through the script in
1568 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in