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.
317 bool "Loongson-2/3 GPIO support"
318 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
320 driver for GPIO functionality on Loongson-2F/3A/3B processors.
323 tristate "NXP LPC18XX/43XX GPIO support"
324 default y if ARCH_LPC18XX
325 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
326 select IRQ_DOMAIN_HIERARCHY
328 Select this option to enable GPIO driver for
329 NXP LPC18XX/43XX devices.
332 tristate "NXP LPC32XX GPIO support"
333 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
335 Select this option to enable GPIO driver for
338 config GPIO_LYNXPOINT
339 tristate "Intel Lynxpoint GPIO support"
340 depends on ACPI && X86
341 select GPIOLIB_IRQCHIP
343 driver for GPIO functionality on Intel Lynxpoint PCH chipset
344 Requires ACPI device enumeration code to set up a platform device.
347 tristate "GPIO support for Fujitsu MB86S7x Platforms"
349 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
352 tristate "MEN 16Z127 GPIO support"
356 Say yes here to support the MEN 16Z127 GPIO Controller
358 config GPIO_MM_LANTIQ
359 bool "Lantiq Memory mapped GPIOs"
360 depends on LANTIQ && SOC_XWAY
362 This enables support for memory mapped GPIOs on the External Bus Unit
363 (EBU) found on Lantiq SoCs. The gpios are output only as they are
364 created by attaching a 16bit latch to the bus.
368 depends on PPC_MPC52xx
371 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
372 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
373 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
378 Say Y here if you're going to use hardware that connects to the
379 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
382 bool "Mediatek MT7621 GPIO Support"
383 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
386 select GPIOLIB_IRQCHIP
388 Say yes here to support the Mediatek MT7621 SoC GPIO device
392 depends on PLAT_ORION || ARCH_MVEBU
394 select GENERIC_IRQ_CHIP
401 select GENERIC_IRQ_CHIP
407 select GENERIC_IRQ_CHIP
410 tristate "Cavium OCTEON GPIO"
411 depends on GPIOLIB && CAVIUM_OCTEON_SOC
414 Say yes here to support the on-chip GPIO lines on the OCTEON
418 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
419 default y if ARCH_OMAP
421 select GENERIC_IRQ_CHIP
422 select GPIOLIB_IRQCHIP
424 Say yes here to enable GPIO support for TI OMAP SoCs.
427 bool "PrimeCell PL061 GPIO support"
430 select GPIOLIB_IRQCHIP
432 Say yes here to support the PrimeCell PL061 GPIO device
434 config GPIO_PMIC_EIC_SPRD
435 tristate "Spreadtrum PMIC EIC support"
436 depends on MFD_SC27XX_PMIC || COMPILE_TEST
438 select GPIOLIB_IRQCHIP
440 Say yes here to support Spreadtrum PMIC EIC device.
443 bool "PXA GPIO support"
444 depends on ARCH_PXA || ARCH_MMP
446 Say yes here to support the PXA GPIO device
449 tristate "Renesas R-Car GPIO"
450 depends on ARCH_RENESAS || COMPILE_TEST
451 select GPIOLIB_IRQCHIP
453 Say yes here to support GPIO on Renesas R-Car SoCs.
456 bool "RDA Micro GPIO controller support"
457 depends on ARCH_RDA || COMPILE_TEST
460 select GPIOLIB_IRQCHIP
462 Say Y here to support RDA Micro GPIO controller.
467 A 32-bit single register GPIO fixed in/out implementation. This
468 can be used to represent any register as a set of GPIO signals.
470 config GPIO_SAMA5D2_PIOBU
471 tristate "SAMA5D2 PIOBU GPIO support"
472 depends on MFD_SYSCON
476 Say yes here to use the PIOBU pins as GPIOs.
478 PIOBU pins on the SAMA5D2 can be used as GPIOs.
479 The difference from regular GPIOs is that they
480 maintain their value during backup/self-refresh.
483 tristate "SIOX GPIO support"
485 select GPIOLIB_IRQCHIP
487 Say yes here to support SIOX I/O devices. These are units connected
488 via a SIOX bus and have a number of fixed-direction I/O lines.
490 config GPIO_SNPS_CREG
491 bool "Synopsys GPIO via CREG (Control REGisters) driver"
492 depends on ARC || COMPILE_TEST
495 This driver supports GPIOs via CREG on various Synopsys SoCs.
496 This is a single-register MMIO GPIO driver for complex cases
497 where only several fields in register belong to GPIO lines and
498 each GPIO line owns a field with different length and on/off value.
500 config GPIO_SPEAR_SPICS
501 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
502 depends on PLAT_SPEAR
503 select GENERIC_IRQ_CHIP
505 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
508 tristate "Spreadtrum GPIO support"
509 depends on ARCH_SPRD || COMPILE_TEST
511 select GPIOLIB_IRQCHIP
513 Say yes here to support Spreadtrum GPIO device.
516 bool "STA2x11/ConneXt GPIO support"
517 depends on MFD_STA2X11
518 select GENERIC_IRQ_CHIP
520 Say yes here to support the STA2x11/ConneXt GPIO device.
521 The GPIO module has 128 GPIO pins with alternate functions.
524 bool "XWAY STP GPIOs"
525 depends on SOC_XWAY || COMPILE_TEST
528 This enables support for the Serial To Parallel (STP) unit found on
529 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
530 that can be up to 24 bit. This peripheral is aimed at driving leds.
531 Some of the gpios/leds can be auto updated by the soc with dsl and
535 tristate "GPIO based on SYSCON"
536 depends on MFD_SYSCON && OF
538 Say yes here to support GPIO functionality though SYSCON driver.
543 select GENERIC_IRQ_CHIP
547 bool "NVIDIA Tegra GPIO support"
549 depends on ARCH_TEGRA || COMPILE_TEST
552 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
555 tristate "NVIDIA Tegra186 GPIO support"
556 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
557 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
559 select GPIOLIB_IRQCHIP
560 select IRQ_DOMAIN_HIERARCHY
562 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
565 tristate "TS-4800 DIO blocks and compatibles"
567 depends on SOC_IMX51 || COMPILE_TEST
570 This driver support TS-4800 FPGA GPIO controllers.
573 tristate "Cavium ThunderX/OCTEON-TX GPIO"
574 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
576 select IRQ_DOMAIN_HIERARCHY
577 select IRQ_FASTEOI_HIERARCHY_HANDLERS
579 Say yes here to support the on-chip GPIO lines on the ThunderX
580 and OCTEON-TX families of SoCs.
583 tristate "UniPhier GPIO support"
584 depends on ARCH_UNIPHIER || COMPILE_TEST
586 select IRQ_DOMAIN_HIERARCHY
588 Say yes here to support UniPhier GPIOs.
592 depends on ARCH_MXC && SOC_VF610
593 select GPIOLIB_IRQCHIP
595 Say yes here to support Vybrid vf610 GPIOs.
598 tristate "NEC VR4100 series General-purpose I/O Uint support"
599 depends on CPU_VR41XX
601 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
604 tristate "VIA VX855/VX875 GPIO"
605 depends on (X86 || COMPILE_TEST) && PCI
609 Support access to the VX855/VX875 GPIO lines through the gpio library.
611 This driver provides common support for accessing the device,
612 additional drivers must be enabled in order to use the
613 functionality of the device.
616 bool "APM X-Gene GPIO controller support"
617 depends on ARM64 && OF_GPIO
619 This driver is to support the GPIO block within the APM X-Gene SoC
620 platform's generic flash controller. The GPIO pins are muxed with
621 the generic flash controller's address and data pins. Say yes
622 here to enable the GFC GPIO functionality.
625 tristate "APM X-Gene GPIO standby controller support"
626 depends on ARCH_XGENE && OF_GPIO
628 select GPIOLIB_IRQCHIP
629 select IRQ_DOMAIN_HIERARCHY
631 This driver supports the GPIO block within the APM X-Gene
632 Standby Domain. Say yes here to enable the GPIO functionality.
635 tristate "Xilinx GPIO support"
637 Say yes here to support the Xilinx FPGA GPIO device
640 tristate "Netlogic XLP GPIO support"
641 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
642 select GPIOLIB_IRQCHIP
644 This driver provides support for GPIO interface on Netlogic XLP MIPS64
645 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
646 XLP9XX and XLP5XX. The same GPIO controller block is also present in
647 Cavium's ThunderX2 CN99XX SoCs.
652 bool "Xtensa GPIO32 support"
654 depends on HAVE_XTENSA_GPIO32
657 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
658 and EXPSTATE (output) ports
661 bool "LSI ZEVIO SoC memory mapped GPIOs"
662 depends on ARM && OF_GPIO
664 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
667 tristate "Xilinx Zynq GPIO support"
668 depends on ARCH_ZYNQ || ARCH_ZYNQMP
669 select GPIOLIB_IRQCHIP
671 Say yes here to support Xilinx Zynq GPIO controller.
674 bool "ZTE ZX GPIO support"
675 depends on ARCH_ZX || COMPILE_TEST
676 select GPIOLIB_IRQCHIP
678 Say yes here to support the GPIO device on ZTE ZX SoCs.
680 config GPIO_LOONGSON1
681 tristate "Loongson1 GPIO support"
682 depends on MACH_LOONGSON32
685 Say Y or M here to support GPIO on Loongson1 SoCs.
688 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
690 This option enables driver for GPIO on AMDs Fusion Controller Hub,
691 as found on G-series SOCs (eg. GX-412TC)
693 Note: This driver doesn't registers itself automatically, as it
694 needs to be provided with platform specific configuration.
695 (See eg. CONFIG_PCENGINES_APU2.)
698 menu "Port-mapped I/O GPIO drivers"
699 depends on X86 # Unconditional I/O space access
701 config GPIO_104_DIO_48E
702 tristate "ACCES 104-DIO-48E GPIO support"
705 select GPIOLIB_IRQCHIP
707 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
708 104-DIO-24E). The base port addresses for the devices may be
709 configured via the base module parameter. The interrupt line numbers
710 for the devices may be configured via the irq module parameter.
712 config GPIO_104_IDIO_16
713 tristate "ACCES 104-IDIO-16 GPIO support"
716 select GPIOLIB_IRQCHIP
718 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
719 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
720 base port addresses for the devices may be configured via the base
721 module parameter. The interrupt line numbers for the devices may be
722 configured via the irq module parameter.
724 config GPIO_104_IDI_48
725 tristate "ACCES 104-IDI-48 GPIO support"
728 select GPIOLIB_IRQCHIP
730 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
731 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
732 the devices may be configured via the base module parameter. The
733 interrupt line numbers for the devices may be configured via the irq
737 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
739 This option enables support for GPIOs found on Fintek Super-I/O
740 chips F71869, F71869A, F71882FG, F71889F and F81866.
742 To compile this driver as a module, choose M here: the module will
743 be called f7188x-gpio.
746 tristate "Diamond Systems GPIO-MM GPIO support"
750 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
752 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
753 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
754 support for these 48 channels of digital I/O.
756 The base port addresses for the devices may be configured via the base
757 array module parameter.
760 tristate "IT87xx GPIO support"
762 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
764 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
765 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
768 To compile this driver as a module, choose M here: the module will
772 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
773 depends on (X86 || COMPILE_TEST) && PCI
777 Say yes here to support GPIO interface on Intel Poulsbo SCH,
778 Intel Tunnel Creek processor, Intel Centerton processor or
779 Intel Quark X1000 SoC.
781 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
782 powered by the core power rail and are turned off during sleep
783 modes (S3 and higher). The remaining four GPIOs are powered by
784 the Intel SCH suspend power supply. These GPIOs remain
785 active during S3. The suspend powered GPIOs can be used to wake the
786 system from the Suspend-to-RAM state.
788 The Intel Tunnel Creek processor has 5 GPIOs powered by the
789 core power rail and 9 from suspend power supply.
791 The Intel Centerton processor has a total of 30 GPIO pins.
792 Twenty-one are powered by the core power rail and 9 from the
793 suspend power supply.
795 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
796 power well and 6 from the suspend power well.
799 tristate "SMSC SCH311x SuperI/O GPIO"
801 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
802 SCH3116 "Super I/O" chipsets.
804 To compile this driver as a module, choose M here: the module will
805 be called gpio-sch311x.
808 tristate "TS-5500 DIO blocks and compatibles"
809 depends on TS5500 || COMPILE_TEST
811 This driver supports Digital I/O exposed by pin blocks found on some
812 Technologic Systems platforms. It includes, but is not limited to, 3
813 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
817 tristate "Winbond Super I/O GPIO support"
820 This option enables support for GPIOs found on Winbond Super I/O
822 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
825 You will need to provide a module parameter "gpios", or a
826 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
827 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
829 To compile this driver as a module, choose M here: the module will
830 be called gpio-winbond.
833 tristate "WinSystems WS16C48 GPIO support"
835 select GPIOLIB_IRQCHIP
837 Enables GPIO support for the WinSystems WS16C48. The base port
838 addresses for the devices may be configured via the base module
839 parameter. The interrupt line numbers for the devices may be
840 configured via the irq module parameter.
844 menu "I2C GPIO expanders"
848 tristate "ADP5588 I2C GPIO expander"
850 This option enables support for 18 GPIOs found
851 on Analog Devices ADP5588 GPIO Expanders.
853 config GPIO_ADP5588_IRQ
854 bool "Interrupt controller support for ADP5588"
855 depends on GPIO_ADP5588=y
856 select GPIOLIB_IRQCHIP
858 Say yes here to enable the adp5588 to be used as an interrupt
859 controller. It requires the driver to be built in the kernel.
862 tristate "Avionic Design N-bit GPIO expander"
864 select GPIOLIB_IRQCHIP
866 This option enables support for N GPIOs found on Avionic Design
867 I2C GPIO expanders. The register space will be extended by powers
868 of two, so the controller will need to accommodate for that. For
869 example: if a controller provides 48 pins, 6 registers will be
870 enough to represent all pins, but the driver will assume a
871 register layout for 64 pins (8 registers).
874 tristate "Gateworks PLD GPIO Expander"
877 Say yes here to provide access to the Gateworks I2C PLD GPIO
878 Expander. This is used at least on the Cambria GW2358-4.
881 tristate "Maxim MAX7300 GPIO expander"
884 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
887 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
889 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
890 Port Expanders. Each IO port on these chips has a fixed role of
891 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
892 Input and Output (designed by 'P'). The combinations are listed
895 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
896 max7322 (4I4O), max7323 (4P4O)
898 16 bits: max7324 (8I8O), max7325 (8P8O),
899 max7326 (4I12O), max7327 (4P12O)
901 Board setup code must specify the model to use, and the start
902 number for these GPIOs.
904 config GPIO_MAX732X_IRQ
905 bool "Interrupt controller support for MAX732x"
906 depends on GPIO_MAX732X=y
907 select GPIOLIB_IRQCHIP
909 Say yes here to enable the max732x to be used as an interrupt
910 controller. It requires the driver to be built in the kernel.
912 config GPIO_MC9S08DZ60
913 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
914 depends on I2C=y && MACH_MX35_3DS
916 Select this to enable the MC9S08DZ60 GPIO driver
919 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
922 Say yes here to provide access to several register-oriented
923 SMBus I/O expanders, made mostly by NXP or TI. Compatible
926 4 bits: pca9536, pca9537
928 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
929 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
931 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
936 40 bits: pca9505, pca9698
938 config GPIO_PCA953X_IRQ
939 bool "Interrupt controller support for PCA953x"
940 depends on GPIO_PCA953X=y
941 select GPIOLIB_IRQCHIP
943 Say yes here to enable the pca953x to be used as an interrupt
944 controller. It requires the driver to be built in the kernel.
947 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
948 select GPIOLIB_IRQCHIP
951 Say yes here to provide access to most "quasi-bidirectional" I2C
952 GPIO expanders used for additional digital outputs or inputs.
953 Most of these parts are from NXP, though TI is a second source for
954 some of them. Compatible models include:
956 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
957 pca9670, pca9672, pca9674, pca9674a,
960 16 bits: pcf8575, pcf8575c, pca8575,
961 pca9671, pca9673, pca9675
963 Your board setup code will need to declare the expanders in
964 use, and assign numbers to the GPIOs they expose. Those GPIOs
965 can then be used from drivers and other kernel code, just like
966 other GPIOs, but only accessible from task contexts.
968 This driver provides an in-kernel interface to those GPIOs using
969 platform-neutral GPIO calls.
972 tristate "TPIC2810 8-Bit I2C GPO expander"
974 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
976 To compile this driver as a module, choose M here: the module will
977 be called gpio-tpic2810.
980 tristate "Technologic Systems FPGA I2C GPIO"
981 depends on SOC_IMX6 || COMPILE_TEST
984 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
985 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
989 menu "MFD GPIO expanders"
992 tristate "GPIO Support for ADP5520 PMIC"
993 depends on PMIC_ADP5520
995 This option enables support for on-chip GPIO found
996 on Analog Devices ADP5520 PMICs.
998 config GPIO_ALTERA_A10SR
999 tristate "Altera Arria10 System Resource GPIO"
1000 depends on MFD_ALTERA_A10SR
1002 Driver for Arria10 Development Kit GPIO expansion which
1003 includes reads of pushbuttons and DIP switches as well
1007 tristate "Wolfson Microelectronics Arizona class devices"
1008 depends on MFD_ARIZONA
1010 Support for GPIOs on Wolfson Arizona class devices.
1013 tristate "ROHM BD70528 GPIO support"
1014 depends on MFD_ROHM_BD70528
1016 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1017 available on the ROHM PMIC in total. The GPIOs can also
1018 generate interrupts.
1020 This driver can also be built as a module. If so, the module
1021 will be called gpio-bd70528.
1023 config GPIO_BD9571MWV
1024 tristate "ROHM BD9571 GPIO support"
1025 depends on MFD_BD9571MWV
1027 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1028 available on the ROHM PMIC in total, both of which can also
1029 generate interrupts.
1031 This driver can also be built as a module. If so, the module
1032 will be called gpio-bd9571mwv.
1034 config GPIO_CRYSTAL_COVE
1035 tristate "GPIO support for Crystal Cove PMIC"
1036 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1037 select GPIOLIB_IRQCHIP
1039 Support for GPIO pins on Crystal Cove PMIC.
1041 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1044 This driver can also be built as a module. If so, the module will be
1045 called gpio-crystalcove.
1048 tristate "AMD CS5535/CS5536 GPIO support"
1049 depends on X86 || MIPS || COMPILE_TEST
1050 depends on MFD_CS5535
1052 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1053 can be used for quite a number of things. The CS5535/6 is found on
1054 AMD Geode and Lemote Yeeloong devices.
1059 tristate "Dialog DA9052 GPIO"
1060 depends on PMIC_DA9052
1062 Say yes here to enable the GPIO driver for the DA9052 chip.
1065 tristate "Dialog Semiconductor DA9055 GPIO"
1066 depends on MFD_DA9055
1068 Say yes here to enable the GPIO driver for the DA9055 chip.
1070 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1071 be controller by this driver.
1073 If driver is built as a module it will be called gpio-da9055.
1076 tristate "Diolan DLN2 GPIO support"
1078 select GPIOLIB_IRQCHIP
1081 Select this option to enable GPIO driver for the Diolan DLN2
1084 This driver can also be built as a module. If so, the module
1085 will be called gpio-dln2.
1088 bool "HTC EGPIO support"
1089 depends on GPIOLIB && ARM
1091 This driver supports the CPLD egpio chip present on
1092 several HTC phones. It provides basic support for input
1093 pins, output pins, and irqs.
1095 config GPIO_JANZ_TTL
1096 tristate "Janz VMOD-TTL Digital IO Module"
1097 depends on MFD_JANZ_CMODIO
1099 This enables support for the Janz VMOD-TTL Digital IO module.
1100 This driver provides support for driving the pins in output
1101 mode only. Input mode is not supported.
1104 tristate "Kontron ETX / COMexpress GPIO"
1105 depends on MFD_KEMPLD
1107 This enables support for the PLD GPIO interface on some Kontron ETX
1108 and COMexpress (ETXexpress) modules.
1110 This driver can also be built as a module. If so, the module will be
1114 tristate "TI/National Semiconductor LP3943 GPIO expander"
1115 depends on MFD_LP3943
1117 GPIO driver for LP3943 MFD.
1118 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1119 Open drain outputs are required for this usage.
1122 tristate "TI LP873X GPO"
1123 depends on MFD_TI_LP873X
1125 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1128 This driver can also be built as a module. If so, the module will be
1132 tristate "TI LP87565 GPIO"
1133 depends on MFD_TI_LP87565
1135 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1138 This driver can also be built as a module. If so, the module will be
1139 called gpio-lp87565.
1142 tristate "Cirrus Logic Madera class codecs"
1143 depends on PINCTRL_MADERA
1145 Support for GPIOs on Cirrus Logic Madera class codecs.
1147 config GPIO_MAX77620
1148 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1149 depends on MFD_MAX77620
1150 select GPIOLIB_IRQCHIP
1152 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1153 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1154 driver also provides interrupt support for each of the gpios.
1155 Say yes here to enable the max77620 to be used as gpio controller.
1157 config GPIO_MAX77650
1158 tristate "Maxim MAX77650/77651 GPIO support"
1159 depends on MFD_MAX77650
1161 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1162 These chips have a single pin that can be configured as GPIO.
1165 bool "Intel MSIC mixed signal gpio support"
1166 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1168 Enable support for GPIO on intel MSIC controllers found in
1172 bool "TI PALMAS series PMICs GPIO"
1173 depends on MFD_PALMAS
1175 Select this option to enable GPIO driver for the TI PALMAS
1179 bool "RICOH RC5T583 GPIO"
1180 depends on MFD_RC5T583
1182 Select this option to enable GPIO driver for the Ricoh RC5T583
1184 This driver provides the support for driving/reading the gpio pins
1185 of RC5T583 device through standard gpio library.
1189 depends on MFD_STMPE
1191 select GPIOLIB_IRQCHIP
1193 This enables support for the GPIOs found on the STMPE I/O
1197 bool "TC3589X GPIOs"
1198 depends on MFD_TC3589X
1200 select GPIOLIB_IRQCHIP
1202 This enables support for the GPIOs found on the TC3589X
1205 config GPIO_TIMBERDALE
1206 bool "Support for timberdale GPIO IP"
1207 depends on MFD_TIMBERDALE
1209 Add support for the GPIO IP in the timberdale FPGA.
1211 config GPIO_TPS65086
1212 tristate "TI TPS65086 GPO"
1213 depends on MFD_TPS65086
1215 This driver supports the GPO on TI TPS65086x PMICs.
1217 config GPIO_TPS65218
1218 tristate "TPS65218 GPIO"
1219 depends on MFD_TPS65218
1221 Select this option to enable GPIO driver for the TPS65218
1224 config GPIO_TPS6586X
1225 bool "TPS6586X GPIO"
1226 depends on MFD_TPS6586X
1228 Select this option to enable GPIO driver for the TPS6586X
1231 config GPIO_TPS65910
1232 bool "TPS65910 GPIO"
1233 depends on MFD_TPS65910
1235 Select this option to enable GPIO driver for the TPS65910
1238 config GPIO_TPS65912
1239 tristate "TI TPS65912 GPIO"
1240 depends on MFD_TPS65912
1242 This driver supports TPS65912 gpio chip
1244 config GPIO_TPS68470
1245 bool "TPS68470 GPIO"
1246 depends on MFD_TPS68470
1248 Select this option to enable GPIO driver for the TPS68470
1250 There are 7 GPIOs and few sensor related GPIOs supported
1251 by the TPS68470. While the 7 GPIOs can be configured as
1252 input or output as appropriate, the sensor related GPIOs
1253 are "output only" GPIOs.
1255 This driver config is bool, as the GPIO functionality
1256 of the TPS68470 must be available before dependent
1260 tristate "TQ-Systems QTMX86 GPIO"
1261 depends on MFD_TQMX86 || COMPILE_TEST
1262 select GPIOLIB_IRQCHIP
1264 This driver supports GPIO on the TQMX86 IO controller.
1267 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1268 depends on TWL4030_CORE
1270 Say yes here to access the GPIO signals of various multi-function
1271 power management chips from Texas Instruments.
1274 tristate "TWL6040 GPO"
1275 depends on TWL6040_CORE
1277 Say yes here to access the GPO signals of twl6040
1278 audio chip from Texas Instruments.
1281 tristate "Philips UCB1400 GPIO"
1282 depends on UCB1400_CORE
1284 This enables support for the Philips UCB1400 GPIO pins.
1285 The UCB1400 is an AC97 audio codec.
1287 config GPIO_WHISKEY_COVE
1288 tristate "GPIO support for Whiskey Cove PMIC"
1289 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1290 select GPIOLIB_IRQCHIP
1292 Support for GPIO pins on Whiskey Cove PMIC.
1294 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1297 This driver can also be built as a module. If so, the module will be
1301 tristate "WM831x GPIOs"
1302 depends on MFD_WM831X
1304 Say yes here to access the GPIO signals of WM831x power management
1305 chips from Wolfson Microelectronics.
1308 tristate "WM8350 GPIOs"
1309 depends on MFD_WM8350
1311 Say yes here to access the GPIO signals of WM8350 power management
1312 chips from Wolfson Microelectronics.
1315 tristate "WM8994 GPIOs"
1316 depends on MFD_WM8994
1318 Say yes here to access the GPIO signals of WM8994 audio hub
1319 CODECs from Wolfson Microelectronics.
1323 menu "PCI GPIO expanders"
1327 tristate "AMD 8111 GPIO driver"
1328 depends on X86 || COMPILE_TEST
1330 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1332 Note, that usually system firmware/ACPI handles GPIO pins on their
1333 own and users might easily break their systems with uncarefull usage
1339 tristate "BT8XX GPIO abuser"
1340 depends on VIDEO_BT848=n
1342 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1343 as a cheap PCI GPIO card.
1345 This chip can be found on Miro, Hauppauge and STB TV-cards.
1347 The card needs to be physically altered for using it as a
1348 GPIO card. For more information on how to build a GPIO card
1349 from a BT8xx TV card, see the documentation file at
1350 Documentation/driver-api/gpio/bt8xxgpio.rst
1354 config GPIO_INTEL_MID
1355 bool "Intel MID GPIO support"
1356 depends on X86_INTEL_MID
1357 select GPIOLIB_IRQCHIP
1359 Say Y here to support Intel MID GPIO.
1361 config GPIO_MERRIFIELD
1362 tristate "Intel Merrifield GPIO support"
1363 depends on X86_INTEL_MID
1364 select GPIOLIB_IRQCHIP
1366 Say Y here to support Intel Merrifield GPIO.
1369 tristate "Mellanox BlueField SoC GPIO"
1370 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1373 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1376 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1377 depends on X86 || COMPILE_TEST
1378 select GENERIC_IRQ_CHIP
1380 ML7213 is companion chip for Intel Atom E6xx series.
1381 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1382 Hub) which is for IVI(In-Vehicle Infotainment) use.
1383 This driver can access the IOH's GPIO device.
1386 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1387 depends on X86_32 || MIPS || COMPILE_TEST
1388 select GENERIC_IRQ_CHIP
1390 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1391 which is an IOH(Input/Output Hub) for x86 embedded processor.
1392 This driver can access PCH GPIO device.
1394 This driver also can be used for LAPIS Semiconductor IOH(Input/
1395 Output Hub), ML7223 and ML7831.
1396 ML7223 IOH is for MP(Media Phone) use.
1397 ML7831 IOH is for general purpose use.
1398 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1399 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1401 config GPIO_PCI_IDIO_16
1402 tristate "ACCES PCI-IDIO-16 GPIO support"
1403 select GPIOLIB_IRQCHIP
1405 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1406 generated when any of the inputs change state (low to high or high to
1407 low). Input filter control is not supported by this driver, and the
1408 input filters are deactivated by this driver.
1410 config GPIO_PCIE_IDIO_24
1411 tristate "ACCES PCIe-IDIO-24 GPIO support"
1412 select GPIOLIB_IRQCHIP
1414 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1415 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1416 when any of the inputs change state (low to high or high to low).
1417 Input filter control is not supported by this driver, and the input
1418 filters are deactivated by this driver.
1421 tristate "RDC R-321x GPIO support"
1425 Support for the RDC R321x SoC GPIOs over southbridge
1426 PCI configuration space.
1428 config GPIO_SODAVILLE
1429 bool "Intel Sodaville GPIO support"
1430 depends on X86 && OF
1432 select GENERIC_IRQ_CHIP
1434 Say Y here to support Intel Sodaville GPIO.
1438 menu "SPI GPIO expanders"
1439 depends on SPI_MASTER
1442 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1445 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1446 shift registers. This driver can be used to provide access
1447 to more gpio outputs.
1449 config GPIO_MAX3191X
1450 tristate "Maxim MAX3191x industrial serializer"
1453 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1454 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1455 chip to make 8 digital 24V inputs available via SPI. Supports
1456 CRC checksums to guard against electromagnetic interference,
1457 as well as undervoltage and overtemperature detection.
1460 tristate "Maxim MAX7301 GPIO expander"
1463 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1466 tristate "Freescale MC33880 high-side/low-side switch"
1468 SPI driver for Freescale MC33880 high-side/low-side switch.
1469 This provides GPIO interface supporting inputs and outputs.
1472 tristate "Generic parallel-in/serial-out shift register"
1474 GPIO driver for SPI compatible parallel-in/serial-out shift
1475 registers. These are input only devices.
1478 tristate "EXAR XRA1403 16-bit GPIO expander"
1481 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1484 tristate "Turris Mox Moxtet bus GPIO expander"
1487 Say yes here if you are building for the Turris Mox router.
1488 This is the driver needed for configuring the GPIOs via the Moxtet
1489 bus. For example the Mox module with SFP cage needs this driver
1490 so that phylink can use corresponding GPIOs.
1494 menu "USB GPIO expanders"
1497 config GPIO_VIPERBOARD
1498 tristate "Viperboard GPIO a & b support"
1499 depends on MFD_VIPERBOARD
1501 Say yes here to access the GPIO signals of Nano River
1502 Technologies Viperboard. There are two GPIO chips on the
1503 board: gpioa and gpiob.
1504 See viperboard API specification and Nano
1505 River Tech's viperboard.h for detailed meaning
1506 of the module parameters.
1511 tristate "GPIO Testing Driver"
1514 This enables GPIO Testing driver, which provides a way to test GPIO
1515 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1516 must be selected for this test.
1517 User could use it through the script in
1518 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in