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.
73 prompt "Character device (/dev/gpiochipN) support" if EXPERT
76 Say Y here to add the character device /dev/gpiochipN interface
77 for GPIOs. The character device allows userspace to control GPIOs
78 using ioctl() operations.
80 Only say N if you are sure that the GPIO character device is not
86 bool "Support GPIO ABI Version 1"
90 Say Y here to support version 1 of the GPIO CDEV ABI.
92 This ABI version is deprecated.
93 Please use the latest ABI for new developments.
98 depends on HAS_IOMEM # Only for IOMEM drivers
105 # put drivers in the right section, in alphabetical order
107 # This symbol is selected by both I2C and SPI expanders
111 menu "Memory mapped GPIO drivers"
114 config GPIO_74XX_MMIO
115 tristate "GPIO driver for 74xx-ICs with MMIO access"
119 Say yes here to support GPIO functionality for 74xx-compatible ICs
120 with MMIO access. Compatible models include:
121 1 bit: 741G125 (Input), 741G74 (Output)
122 2 bits: 742G125 (Input), 7474 (Output)
123 4 bits: 74125 (Input), 74175 (Output)
124 6 bits: 74365 (Input), 74174 (Output)
125 8 bits: 74244 (Input), 74273 (Output)
126 16 bits: 741624 (Input), 7416374 (Output)
129 tristate "Altera GPIO"
131 select GPIOLIB_IRQCHIP
133 Say Y or M here to build support for the Altera PIO device.
135 If driver is built as a module it will be called gpio-altera.
138 tristate "AMD Promontory GPIO support"
142 driver for GPIO functionality on Promontory IOHub
143 Require ACPI ASL code to enumerate as a platform device.
146 tristate "Aspeed GPIO support"
147 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
148 select GPIOLIB_IRQCHIP
150 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
152 config GPIO_ASPEED_SGPIO
153 bool "Aspeed SGPIO support"
154 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
156 select GPIOLIB_IRQCHIP
158 Say Y here to support Aspeed AST2500 SGPIO functionality.
161 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
163 depends on ATH79 || COMPILE_TEST
165 select GPIOLIB_IRQCHIP
167 Select this option to enable GPIO driver for
168 Atheros AR71XX/AR724X/AR913X SoC devices.
170 config GPIO_RASPBERRYPI_EXP
171 tristate "Raspberry Pi 3 GPIO Expander"
172 default RASPBERRYPI_FIRMWARE
174 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
175 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
176 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
178 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
179 the firmware mailbox to communicate with VideoCore on BCM283x chips.
182 bool "Broadcom Kona GPIO"
183 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
185 Turn on GPIO support for Broadcom "Kona" chips.
187 config GPIO_BCM_XGS_IPROC
188 tristate "BRCM XGS iProc GPIO support"
189 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
191 select GPIOLIB_IRQCHIP
192 default ARCH_BCM_IPROC
194 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
197 tristate "BRCMSTB GPIO support"
198 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
199 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
203 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
206 tristate "Cadence GPIO support"
209 select GPIOLIB_IRQCHIP
211 Say yes here to enable support for Cadence GPIO controller.
214 tristate "CLPS711X GPIO support"
215 depends on ARCH_CLPS711X || COMPILE_TEST
218 Say yes here to support GPIO on CLPS711X SoCs.
221 bool "TI Davinci/Keystone GPIO support"
222 default y if ARCH_DAVINCI
223 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
225 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
228 tristate "Synopsys DesignWare APB GPIO driver"
230 select GPIOLIB_IRQCHIP
232 Say Y or M here to build support for the Synopsys DesignWare APB
236 tristate "Spreadtrum EIC support"
237 depends on ARCH_SPRD || COMPILE_TEST
239 select GPIOLIB_IRQCHIP
241 Say yes here to support Spreadtrum EIC device.
244 tristate "Emma Mobile GPIO"
245 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
247 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
251 depends on ARCH_EP93XX
253 select GPIOLIB_IRQCHIP
256 tristate "Support for GPIO pins on XR17V352/354/358"
257 depends on SERIAL_8250_EXAR
260 Selecting this option will enable handling of GPIO pins present
261 on Exar XR17V352/354/358 chips.
264 bool "GE FPGA based GPIO"
268 Support for common GPIO functionality provided on some GE Single Board
271 This driver provides basic support (configure as input or output, read
272 and write pin state) for GPIO implemented in a number of GE single
275 config GPIO_FTGPIO010
276 bool "Faraday FTGPIO010 GPIO"
279 select GPIOLIB_IRQCHIP
280 default (ARCH_GEMINI || ARCH_MOXART)
282 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
283 Cortina systems Gemini platforms, Moxa ART and others.
285 config GPIO_GENERIC_PLATFORM
286 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
289 Say yes here to support basic platform_device memory-mapped GPIO controllers.
292 tristate "Aeroflex Gaisler GRGPIO support"
297 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
298 VHDL IP core library.
301 tristate "Nintendo Wii (Hollywood) GPIO"
304 select GPIOLIB_IRQCHIP
306 Select this to support the GPIO controller of the Nintendo Wii.
311 tristate "Intel ICH GPIO"
312 depends on PCI && X86
316 Say yes here to support the GPIO functionality of a number of Intel
317 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
318 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
319 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
324 tristate "Intel IOP GPIO"
325 depends on ARCH_IOP32X || COMPILE_TEST
328 Say yes here to support the GPIO functionality of a number of Intel
334 bool "Intel IXP4xx GPIO"
335 depends on ARM # For <asm/mach-types.h>
336 depends on ARCH_IXP4XX
338 select GPIOLIB_IRQCHIP
339 select IRQ_DOMAIN_HIERARCHY
341 Say yes here to support the GPIO functionality of a number of Intel
342 IXP4xx series of chips.
346 tristate "Xylon LogiCVC GPIO support"
347 depends on MFD_SYSCON && OF
349 Say yes here to support GPIO functionality of the Xylon LogiCVC
350 programmable logic block.
353 bool "Loongson-2/3 GPIO support"
354 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
356 driver for GPIO functionality on Loongson-2F/3A/3B processors.
359 tristate "NXP LPC18XX/43XX GPIO support"
360 default y if ARCH_LPC18XX
361 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
362 select IRQ_DOMAIN_HIERARCHY
364 Select this option to enable GPIO driver for
365 NXP LPC18XX/43XX devices.
368 tristate "NXP LPC32XX GPIO support"
369 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
371 Select this option to enable GPIO driver for
375 tristate "GPIO support for Fujitsu MB86S7x Platforms"
377 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
380 tristate "MEN 16Z127 GPIO support"
384 Say yes here to support the MEN 16Z127 GPIO Controller
386 config GPIO_MM_LANTIQ
387 bool "Lantiq Memory mapped GPIOs"
388 depends on LANTIQ && SOC_XWAY
390 This enables support for memory mapped GPIOs on the External Bus Unit
391 (EBU) found on Lantiq SoCs. The gpios are output only as they are
392 created by attaching a 16bit latch to the bus.
396 depends on PPC_MPC52xx
399 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
400 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
401 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
406 Say Y here if you're going to use hardware that connects to the
407 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
410 bool "Mediatek MT7621 GPIO Support"
411 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
414 select GPIOLIB_IRQCHIP
416 Say yes here to support the Mediatek MT7621 SoC GPIO device
420 depends on PLAT_ORION || ARCH_MVEBU
422 select GENERIC_IRQ_CHIP
426 tristate "i.MX GPIO support"
427 depends on ARCH_MXC || COMPILE_TEST
429 select GENERIC_IRQ_CHIP
433 depends on ARCH_MXS || COMPILE_TEST
435 select GENERIC_IRQ_CHIP
438 tristate "Cavium OCTEON GPIO"
439 depends on CAVIUM_OCTEON_SOC
442 Say yes here to support the on-chip GPIO lines on the OCTEON
446 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
447 default y if ARCH_OMAP
449 select GENERIC_IRQ_CHIP
450 select GPIOLIB_IRQCHIP
452 Say yes here to enable GPIO support for TI OMAP SoCs.
455 tristate "PrimeCell PL061 GPIO support"
458 select GPIOLIB_IRQCHIP
460 Say yes here to support the PrimeCell PL061 GPIO device
462 config GPIO_PMIC_EIC_SPRD
463 tristate "Spreadtrum PMIC EIC support"
464 depends on MFD_SC27XX_PMIC || COMPILE_TEST
466 select GPIOLIB_IRQCHIP
468 Say yes here to support Spreadtrum PMIC EIC device.
471 bool "PXA GPIO support"
472 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
474 Say yes here to support the PXA GPIO device
477 tristate "Renesas R-Car GPIO"
478 depends on ARCH_RENESAS || COMPILE_TEST
479 select GPIOLIB_IRQCHIP
481 Say yes here to support GPIO on Renesas R-Car SoCs.
484 bool "RDA Micro GPIO controller support"
485 depends on ARCH_RDA || COMPILE_TEST
488 select GPIOLIB_IRQCHIP
490 Say Y here to support RDA Micro GPIO controller.
495 A 32-bit single register GPIO fixed in/out implementation. This
496 can be used to represent any register as a set of GPIO signals.
498 config GPIO_SAMA5D2_PIOBU
499 tristate "SAMA5D2 PIOBU GPIO support"
500 depends on MFD_SYSCON
504 Say yes here to use the PIOBU pins as GPIOs.
506 PIOBU pins on the SAMA5D2 can be used as GPIOs.
507 The difference from regular GPIOs is that they
508 maintain their value during backup/self-refresh.
511 bool "SiFive GPIO support"
512 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
514 select GPIOLIB_IRQCHIP
517 Say yes here to support the GPIO device on SiFive SoCs.
520 tristate "SIOX GPIO support"
522 select GPIOLIB_IRQCHIP
524 Say yes here to support SIOX I/O devices. These are units connected
525 via a SIOX bus and have a number of fixed-direction I/O lines.
527 config GPIO_SNPS_CREG
528 bool "Synopsys GPIO via CREG (Control REGisters) driver"
529 depends on ARC || COMPILE_TEST
532 This driver supports GPIOs via CREG on various Synopsys SoCs.
533 This is a single-register MMIO GPIO driver for complex cases
534 where only several fields in register belong to GPIO lines and
535 each GPIO line owns a field with different length and on/off value.
537 config GPIO_SPEAR_SPICS
538 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
539 depends on PLAT_SPEAR
540 select GENERIC_IRQ_CHIP
542 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
545 tristate "Spreadtrum GPIO support"
546 depends on ARCH_SPRD || COMPILE_TEST
548 select GPIOLIB_IRQCHIP
550 Say yes here to support Spreadtrum GPIO device.
553 bool "STA2x11/ConneXt GPIO support"
554 depends on MFD_STA2X11
555 select GENERIC_IRQ_CHIP
557 Say yes here to support the STA2x11/ConneXt GPIO device.
558 The GPIO module has 128 GPIO pins with alternate functions.
561 bool "XWAY STP GPIOs"
562 depends on SOC_XWAY || COMPILE_TEST
565 This enables support for the Serial To Parallel (STP) unit found on
566 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
567 that can be up to 24 bit. This peripheral is aimed at driving leds.
568 Some of the gpios/leds can be auto updated by the soc with dsl and
572 tristate "GPIO based on SYSCON"
573 depends on MFD_SYSCON && OF
575 Say yes here to support GPIO functionality though SYSCON driver.
580 select GENERIC_IRQ_CHIP
584 bool "NVIDIA Tegra GPIO support"
586 depends on ARCH_TEGRA || COMPILE_TEST
589 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
592 tristate "NVIDIA Tegra186 GPIO support"
593 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
594 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
596 select GPIOLIB_IRQCHIP
597 select IRQ_DOMAIN_HIERARCHY
599 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
602 tristate "TS-4800 DIO blocks and compatibles"
604 depends on SOC_IMX51 || COMPILE_TEST
607 This driver support TS-4800 FPGA GPIO controllers.
610 tristate "Cavium ThunderX/OCTEON-TX GPIO"
611 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
613 select GPIOLIB_IRQCHIP
614 select IRQ_DOMAIN_HIERARCHY
615 select IRQ_FASTEOI_HIERARCHY_HANDLERS
617 Say yes here to support the on-chip GPIO lines on the ThunderX
618 and OCTEON-TX families of SoCs.
621 tristate "UniPhier GPIO support"
622 depends on ARCH_UNIPHIER || COMPILE_TEST
624 select IRQ_DOMAIN_HIERARCHY
626 Say yes here to support UniPhier GPIOs.
630 depends on ARCH_MXC && SOC_VF610
631 select GPIOLIB_IRQCHIP
633 Say yes here to support Vybrid vf610 GPIOs.
636 tristate "NEC VR4100 series General-purpose I/O Uint support"
637 depends on CPU_VR41XX
639 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
642 tristate "VIA VX855/VX875 GPIO"
643 depends on (X86 || COMPILE_TEST) && PCI
647 Support access to the VX855/VX875 GPIO lines through the gpio library.
649 This driver provides common support for accessing the device,
650 additional drivers must be enabled in order to use the
651 functionality of the device.
654 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
655 depends on MFD_WCD934X && OF_GPIO
657 This driver is to supprot GPIO block found on the Qualcomm Technologies
658 Inc WCD9340/WCD9341 Audio Codec.
661 bool "APM X-Gene GPIO controller support"
662 depends on ARM64 && OF_GPIO
664 This driver is to support the GPIO block within the APM X-Gene SoC
665 platform's generic flash controller. The GPIO pins are muxed with
666 the generic flash controller's address and data pins. Say yes
667 here to enable the GFC GPIO functionality.
670 tristate "APM X-Gene GPIO standby controller support"
671 depends on (ARCH_XGENE || COMPILE_TEST)
673 select GPIOLIB_IRQCHIP
674 select IRQ_DOMAIN_HIERARCHY
676 This driver supports the GPIO block within the APM X-Gene
677 Standby Domain. Say yes here to enable the GPIO functionality.
680 tristate "Xilinx GPIO support"
682 Say yes here to support the Xilinx FPGA GPIO device
685 tristate "Netlogic XLP GPIO support"
686 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
687 select GPIOLIB_IRQCHIP
689 This driver provides support for GPIO interface on Netlogic XLP MIPS64
690 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
691 XLP9XX and XLP5XX. The same GPIO controller block is also present in
692 Cavium's ThunderX2 CN99XX SoCs.
697 bool "Xtensa GPIO32 support"
699 depends on HAVE_XTENSA_GPIO32
702 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
703 and EXPSTATE (output) ports
706 bool "LSI ZEVIO SoC memory mapped GPIOs"
707 depends on ARM && OF_GPIO
709 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
712 tristate "Xilinx Zynq GPIO support"
713 depends on ARCH_ZYNQ || ARCH_ZYNQMP
714 select GPIOLIB_IRQCHIP
716 Say yes here to support Xilinx Zynq GPIO controller.
719 bool "ZTE ZX GPIO support"
720 depends on ARCH_ZX || COMPILE_TEST
721 select GPIOLIB_IRQCHIP
723 Say yes here to support the GPIO device on ZTE ZX SoCs.
725 config GPIO_LOONGSON1
726 tristate "Loongson1 GPIO support"
727 depends on MACH_LOONGSON32
730 Say Y or M here to support GPIO on Loongson1 SoCs.
733 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
735 This option enables driver for GPIO on AMDs Fusion Controller Hub,
736 as found on G-series SOCs (eg. GX-412TC)
738 Note: This driver doesn't registers itself automatically, as it
739 needs to be provided with platform specific configuration.
740 (See eg. CONFIG_PCENGINES_APU2.)
743 menu "Port-mapped I/O GPIO drivers"
744 depends on X86 # Unconditional I/O space access
746 config GPIO_104_DIO_48E
747 tristate "ACCES 104-DIO-48E GPIO support"
750 select GPIOLIB_IRQCHIP
752 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
753 104-DIO-24E). The base port addresses for the devices may be
754 configured via the base module parameter. The interrupt line numbers
755 for the devices may be configured via the irq module parameter.
757 config GPIO_104_IDIO_16
758 tristate "ACCES 104-IDIO-16 GPIO support"
761 select GPIOLIB_IRQCHIP
763 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
764 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
765 base port addresses for the devices may be configured via the base
766 module parameter. The interrupt line numbers for the devices may be
767 configured via the irq module parameter.
769 config GPIO_104_IDI_48
770 tristate "ACCES 104-IDI-48 GPIO support"
773 select GPIOLIB_IRQCHIP
775 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
776 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
777 the devices may be configured via the base module parameter. The
778 interrupt line numbers for the devices may be configured via the irq
782 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
784 This option enables support for GPIOs found on Fintek Super-I/O
785 chips F71869, F71869A, F71882FG, F71889F and F81866.
787 To compile this driver as a module, choose M here: the module will
788 be called f7188x-gpio.
791 tristate "Diamond Systems GPIO-MM GPIO support"
795 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
797 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
798 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
799 support for these 48 channels of digital I/O.
801 The base port addresses for the devices may be configured via the base
802 array module parameter.
805 tristate "IT87xx GPIO support"
807 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
809 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
810 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
813 To compile this driver as a module, choose M here: the module will
817 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
818 depends on (X86 || COMPILE_TEST) && PCI
822 Say yes here to support GPIO interface on Intel Poulsbo SCH,
823 Intel Tunnel Creek processor, Intel Centerton processor or
824 Intel Quark X1000 SoC.
826 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
827 powered by the core power rail and are turned off during sleep
828 modes (S3 and higher). The remaining four GPIOs are powered by
829 the Intel SCH suspend power supply. These GPIOs remain
830 active during S3. The suspend powered GPIOs can be used to wake the
831 system from the Suspend-to-RAM state.
833 The Intel Tunnel Creek processor has 5 GPIOs powered by the
834 core power rail and 9 from suspend power supply.
836 The Intel Centerton processor has a total of 30 GPIO pins.
837 Twenty-one are powered by the core power rail and 9 from the
838 suspend power supply.
840 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
841 power well and 6 from the suspend power well.
844 tristate "SMSC SCH311x SuperI/O GPIO"
846 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
847 SCH3116 "Super I/O" chipsets.
849 To compile this driver as a module, choose M here: the module will
850 be called gpio-sch311x.
853 tristate "TS-5500 DIO blocks and compatibles"
854 depends on TS5500 || COMPILE_TEST
856 This driver supports Digital I/O exposed by pin blocks found on some
857 Technologic Systems platforms. It includes, but is not limited to, 3
858 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
862 tristate "Winbond Super I/O GPIO support"
865 This option enables support for GPIOs found on Winbond Super I/O
867 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
870 You will need to provide a module parameter "gpios", or a
871 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
872 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
874 To compile this driver as a module, choose M here: the module will
875 be called gpio-winbond.
878 tristate "WinSystems WS16C48 GPIO support"
880 select GPIOLIB_IRQCHIP
882 Enables GPIO support for the WinSystems WS16C48. The base port
883 addresses for the devices may be configured via the base module
884 parameter. The interrupt line numbers for the devices may be
885 configured via the irq module parameter.
889 menu "I2C GPIO expanders"
893 tristate "ADP5588 I2C GPIO expander"
895 This option enables support for 18 GPIOs found
896 on Analog Devices ADP5588 GPIO Expanders.
898 config GPIO_ADP5588_IRQ
899 bool "Interrupt controller support for ADP5588"
900 depends on GPIO_ADP5588=y
901 select GPIOLIB_IRQCHIP
903 Say yes here to enable the adp5588 to be used as an interrupt
904 controller. It requires the driver to be built in the kernel.
907 tristate "Avionic Design N-bit GPIO expander"
909 select GPIOLIB_IRQCHIP
911 This option enables support for N GPIOs found on Avionic Design
912 I2C GPIO expanders. The register space will be extended by powers
913 of two, so the controller will need to accommodate for that. For
914 example: if a controller provides 48 pins, 6 registers will be
915 enough to represent all pins, but the driver will assume a
916 register layout for 64 pins (8 registers).
919 tristate "Gateworks PLD GPIO Expander"
922 Say yes here to provide access to the Gateworks I2C PLD GPIO
923 Expander. This is used at least on the Cambria GW2358-4.
926 tristate "Maxim MAX7300 GPIO expander"
929 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
932 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
934 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
935 Port Expanders. Each IO port on these chips has a fixed role of
936 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
937 Input and Output (designed by 'P'). The combinations are listed
940 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
941 max7322 (4I4O), max7323 (4P4O)
943 16 bits: max7324 (8I8O), max7325 (8P8O),
944 max7326 (4I12O), max7327 (4P12O)
946 Board setup code must specify the model to use, and the start
947 number for these GPIOs.
949 config GPIO_MAX732X_IRQ
950 bool "Interrupt controller support for MAX732x"
951 depends on GPIO_MAX732X=y
952 select GPIOLIB_IRQCHIP
954 Say yes here to enable the max732x to be used as an interrupt
955 controller. It requires the driver to be built in the kernel.
957 config GPIO_MC9S08DZ60
958 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
959 depends on I2C=y && MACH_MX35_3DS
961 Select this to enable the MC9S08DZ60 GPIO driver
964 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
967 Say yes here to provide access to several register-oriented
968 SMBus I/O expanders, made mostly by NXP or TI. Compatible
971 4 bits: pca9536, pca9537
973 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
974 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
976 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
981 40 bits: pca9505, pca9698
983 config GPIO_PCA953X_IRQ
984 bool "Interrupt controller support for PCA953x"
985 depends on GPIO_PCA953X
986 select GPIOLIB_IRQCHIP
988 Say yes here to enable the pca953x to be used as an interrupt
989 controller. It requires the driver to be built in the kernel.
992 tristate "PCA9570 4-Bit I2C GPO expander"
994 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
996 To compile this driver as a module, choose M here: the module will
997 be called gpio-pca9570.
1000 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1001 select GPIOLIB_IRQCHIP
1004 Say yes here to provide access to most "quasi-bidirectional" I2C
1005 GPIO expanders used for additional digital outputs or inputs.
1006 Most of these parts are from NXP, though TI is a second source for
1007 some of them. Compatible models include:
1009 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1010 pca9670, pca9672, pca9674, pca9674a,
1013 16 bits: pcf8575, pcf8575c, pca8575,
1014 pca9671, pca9673, pca9675
1016 Your board setup code will need to declare the expanders in
1017 use, and assign numbers to the GPIOs they expose. Those GPIOs
1018 can then be used from drivers and other kernel code, just like
1019 other GPIOs, but only accessible from task contexts.
1021 This driver provides an in-kernel interface to those GPIOs using
1022 platform-neutral GPIO calls.
1024 config GPIO_TPIC2810
1025 tristate "TPIC2810 8-Bit I2C GPO expander"
1027 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1029 To compile this driver as a module, choose M here: the module will
1030 be called gpio-tpic2810.
1033 tristate "Technologic Systems FPGA I2C GPIO"
1034 depends on SOC_IMX6 || COMPILE_TEST
1037 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1038 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1042 menu "MFD GPIO expanders"
1045 tristate "GPIO Support for ADP5520 PMIC"
1046 depends on PMIC_ADP5520
1048 This option enables support for on-chip GPIO found
1049 on Analog Devices ADP5520 PMICs.
1051 config GPIO_ALTERA_A10SR
1052 tristate "Altera Arria10 System Resource GPIO"
1053 depends on MFD_ALTERA_A10SR
1055 Driver for Arria10 Development Kit GPIO expansion which
1056 includes reads of pushbuttons and DIP switches as well
1060 tristate "Wolfson Microelectronics Arizona class devices"
1061 depends on MFD_ARIZONA
1063 Support for GPIOs on Wolfson Arizona class devices.
1066 tristate "ROHM BD70528 GPIO support"
1067 depends on MFD_ROHM_BD70528
1069 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1070 available on the ROHM PMIC in total. The GPIOs can also
1071 generate interrupts.
1073 This driver can also be built as a module. If so, the module
1074 will be called gpio-bd70528.
1077 tristate "ROHM BD71828 GPIO support"
1078 depends on MFD_ROHM_BD71828
1080 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1081 available on the ROHM PMIC in total. The GPIOs are limited to
1082 outputs only and pins must be configured to GPIO outputs by
1083 OTP. Enable this only if you want to use these pins as outputs.
1085 This driver can also be built as a module. If so, the module
1086 will be called gpio-bd71828.
1088 config GPIO_BD9571MWV
1089 tristate "ROHM BD9571 GPIO support"
1090 depends on MFD_BD9571MWV
1092 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1093 available on the ROHM PMIC in total, both of which can also
1094 generate interrupts.
1096 This driver can also be built as a module. If so, the module
1097 will be called gpio-bd9571mwv.
1099 config GPIO_CRYSTAL_COVE
1100 tristate "GPIO support for Crystal Cove PMIC"
1101 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1102 select GPIOLIB_IRQCHIP
1104 Support for GPIO pins on Crystal Cove PMIC.
1106 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1109 This driver can also be built as a module. If so, the module will be
1110 called gpio-crystalcove.
1113 tristate "AMD CS5535/CS5536 GPIO support"
1114 depends on X86 || MIPS || COMPILE_TEST
1115 depends on MFD_CS5535
1117 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1118 can be used for quite a number of things. The CS5535/6 is found on
1119 AMD Geode and Lemote Yeeloong devices.
1124 tristate "Dialog DA9052 GPIO"
1125 depends on PMIC_DA9052
1127 Say yes here to enable the GPIO driver for the DA9052 chip.
1130 tristate "Dialog Semiconductor DA9055 GPIO"
1131 depends on MFD_DA9055
1133 Say yes here to enable the GPIO driver for the DA9055 chip.
1135 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1136 be controller by this driver.
1138 If driver is built as a module it will be called gpio-da9055.
1141 tristate "Diolan DLN2 GPIO support"
1143 select GPIOLIB_IRQCHIP
1146 Select this option to enable GPIO driver for the Diolan DLN2
1149 This driver can also be built as a module. If so, the module
1150 will be called gpio-dln2.
1153 bool "HTC EGPIO support"
1156 This driver supports the CPLD egpio chip present on
1157 several HTC phones. It provides basic support for input
1158 pins, output pins, and irqs.
1160 config GPIO_JANZ_TTL
1161 tristate "Janz VMOD-TTL Digital IO Module"
1162 depends on MFD_JANZ_CMODIO
1164 This enables support for the Janz VMOD-TTL Digital IO module.
1165 This driver provides support for driving the pins in output
1166 mode only. Input mode is not supported.
1169 tristate "Kontron ETX / COMexpress GPIO"
1170 depends on MFD_KEMPLD
1172 This enables support for the PLD GPIO interface on some Kontron ETX
1173 and COMexpress (ETXexpress) modules.
1175 This driver can also be built as a module. If so, the module will be
1179 tristate "TI/National Semiconductor LP3943 GPIO expander"
1180 depends on MFD_LP3943
1182 GPIO driver for LP3943 MFD.
1183 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1184 Open drain outputs are required for this usage.
1187 tristate "TI LP873X GPO"
1188 depends on MFD_TI_LP873X
1190 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1193 This driver can also be built as a module. If so, the module will be
1197 tristate "TI LP87565 GPIO"
1198 depends on MFD_TI_LP87565
1200 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1203 This driver can also be built as a module. If so, the module will be
1204 called gpio-lp87565.
1207 tristate "Cirrus Logic Madera class codecs"
1208 depends on PINCTRL_MADERA
1210 Support for GPIOs on Cirrus Logic Madera class codecs.
1212 config GPIO_MAX77620
1213 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1214 depends on MFD_MAX77620
1215 select GPIOLIB_IRQCHIP
1217 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1218 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1219 driver also provides interrupt support for each of the gpios.
1220 Say yes here to enable the max77620 to be used as gpio controller.
1222 config GPIO_MAX77650
1223 tristate "Maxim MAX77650/77651 GPIO support"
1224 depends on MFD_MAX77650
1226 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1227 These chips have a single pin that can be configured as GPIO.
1230 bool "Intel MSIC mixed signal gpio support"
1231 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1233 Enable support for GPIO on intel MSIC controllers found in
1237 bool "TI PALMAS series PMICs GPIO"
1238 depends on MFD_PALMAS
1240 Select this option to enable GPIO driver for the TI PALMAS
1244 bool "RICOH RC5T583 GPIO"
1245 depends on MFD_RC5T583
1247 Select this option to enable GPIO driver for the Ricoh RC5T583
1249 This driver provides the support for driving/reading the gpio pins
1250 of RC5T583 device through standard gpio library.
1252 config GPIO_SL28CPLD
1253 tristate "Kontron sl28cpld GPIO support"
1254 depends on MFD_SL28CPLD || COMPILE_TEST
1256 select GPIOLIB_IRQCHIP
1259 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1261 This driver can also be built as a module. If so, the module will be
1262 called gpio-sl28cpld.
1266 depends on MFD_STMPE
1268 select GPIOLIB_IRQCHIP
1270 This enables support for the GPIOs found on the STMPE I/O
1274 bool "TC3589X GPIOs"
1275 depends on MFD_TC3589X
1277 select GPIOLIB_IRQCHIP
1279 This enables support for the GPIOs found on the TC3589X
1282 config GPIO_TIMBERDALE
1283 bool "Support for timberdale GPIO IP"
1284 depends on MFD_TIMBERDALE
1286 Add support for the GPIO IP in the timberdale FPGA.
1288 config GPIO_TPS65086
1289 tristate "TI TPS65086 GPO"
1290 depends on MFD_TPS65086
1292 This driver supports the GPO on TI TPS65086x PMICs.
1294 config GPIO_TPS65218
1295 tristate "TPS65218 GPIO"
1296 depends on MFD_TPS65218
1298 Select this option to enable GPIO driver for the TPS65218
1301 config GPIO_TPS6586X
1302 bool "TPS6586X GPIO"
1303 depends on MFD_TPS6586X
1305 Select this option to enable GPIO driver for the TPS6586X
1308 config GPIO_TPS65910
1309 bool "TPS65910 GPIO"
1310 depends on MFD_TPS65910
1312 Select this option to enable GPIO driver for the TPS65910
1315 config GPIO_TPS65912
1316 tristate "TI TPS65912 GPIO"
1317 depends on MFD_TPS65912
1319 This driver supports TPS65912 gpio chip
1321 config GPIO_TPS68470
1322 bool "TPS68470 GPIO"
1323 depends on MFD_TPS68470
1325 Select this option to enable GPIO driver for the TPS68470
1327 There are 7 GPIOs and few sensor related GPIOs supported
1328 by the TPS68470. While the 7 GPIOs can be configured as
1329 input or output as appropriate, the sensor related GPIOs
1330 are "output only" GPIOs.
1332 This driver config is bool, as the GPIO functionality
1333 of the TPS68470 must be available before dependent
1337 tristate "TQ-Systems QTMX86 GPIO"
1338 depends on MFD_TQMX86 || COMPILE_TEST
1339 select GPIOLIB_IRQCHIP
1341 This driver supports GPIO on the TQMX86 IO controller.
1344 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1345 depends on TWL4030_CORE
1347 Say yes here to access the GPIO signals of various multi-function
1348 power management chips from Texas Instruments.
1351 tristate "TWL6040 GPO"
1352 depends on TWL6040_CORE
1354 Say yes here to access the GPO signals of twl6040
1355 audio chip from Texas Instruments.
1358 tristate "Philips UCB1400 GPIO"
1359 depends on UCB1400_CORE
1361 This enables support for the Philips UCB1400 GPIO pins.
1362 The UCB1400 is an AC97 audio codec.
1364 config GPIO_WHISKEY_COVE
1365 tristate "GPIO support for Whiskey Cove PMIC"
1366 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1367 select GPIOLIB_IRQCHIP
1369 Support for GPIO pins on Whiskey Cove PMIC.
1371 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1374 This driver can also be built as a module. If so, the module will be
1378 tristate "WM831x GPIOs"
1379 depends on MFD_WM831X
1381 Say yes here to access the GPIO signals of WM831x power management
1382 chips from Wolfson Microelectronics.
1385 tristate "WM8350 GPIOs"
1386 depends on MFD_WM8350
1388 Say yes here to access the GPIO signals of WM8350 power management
1389 chips from Wolfson Microelectronics.
1392 tristate "WM8994 GPIOs"
1393 depends on MFD_WM8994
1395 Say yes here to access the GPIO signals of WM8994 audio hub
1396 CODECs from Wolfson Microelectronics.
1400 menu "PCI GPIO expanders"
1404 tristate "AMD 8111 GPIO driver"
1405 depends on X86 || COMPILE_TEST
1407 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1409 Note, that usually system firmware/ACPI handles GPIO pins on their
1410 own and users might easily break their systems with uncarefull usage
1416 tristate "BT8XX GPIO abuser"
1417 depends on VIDEO_BT848=n
1419 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1420 as a cheap PCI GPIO card.
1422 This chip can be found on Miro, Hauppauge and STB TV-cards.
1424 The card needs to be physically altered for using it as a
1425 GPIO card. For more information on how to build a GPIO card
1426 from a BT8xx TV card, see the documentation file at
1427 Documentation/driver-api/gpio/bt8xxgpio.rst
1431 config GPIO_INTEL_MID
1432 bool "Intel MID GPIO support"
1433 depends on X86_INTEL_MID
1434 select GPIOLIB_IRQCHIP
1436 Say Y here to support Intel MID GPIO.
1438 config GPIO_MERRIFIELD
1439 tristate "Intel Merrifield GPIO support"
1440 depends on X86_INTEL_MID
1441 select GPIOLIB_IRQCHIP
1443 Say Y here to support Intel Merrifield GPIO.
1446 tristate "Mellanox BlueField SoC GPIO"
1447 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1450 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1453 tristate "Mellanox BlueField 2 SoC GPIO"
1454 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1457 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1460 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1461 depends on X86 || COMPILE_TEST
1462 select GENERIC_IRQ_CHIP
1464 ML7213 is companion chip for Intel Atom E6xx series.
1465 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1466 Hub) which is for IVI(In-Vehicle Infotainment) use.
1467 This driver can access the IOH's GPIO device.
1470 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1471 depends on X86_32 || MIPS || COMPILE_TEST
1472 select GENERIC_IRQ_CHIP
1474 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1475 which is an IOH(Input/Output Hub) for x86 embedded processor.
1476 This driver can access PCH GPIO device.
1478 This driver also can be used for LAPIS Semiconductor IOH(Input/
1479 Output Hub), ML7223 and ML7831.
1480 ML7223 IOH is for MP(Media Phone) use.
1481 ML7831 IOH is for general purpose use.
1482 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1483 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1485 config GPIO_PCI_IDIO_16
1486 tristate "ACCES PCI-IDIO-16 GPIO support"
1487 select GPIOLIB_IRQCHIP
1489 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1490 generated when any of the inputs change state (low to high or high to
1491 low). Input filter control is not supported by this driver, and the
1492 input filters are deactivated by this driver.
1494 config GPIO_PCIE_IDIO_24
1495 tristate "ACCES PCIe-IDIO-24 GPIO support"
1496 select GPIOLIB_IRQCHIP
1498 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1499 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1500 when any of the inputs change state (low to high or high to low).
1501 Input filter control is not supported by this driver, and the input
1502 filters are deactivated by this driver.
1505 tristate "RDC R-321x GPIO support"
1509 Support for the RDC R321x SoC GPIOs over southbridge
1510 PCI configuration space.
1512 config GPIO_SODAVILLE
1513 bool "Intel Sodaville GPIO support"
1514 depends on X86 && OF
1516 select GENERIC_IRQ_CHIP
1518 Say Y here to support Intel Sodaville GPIO.
1522 menu "SPI GPIO expanders"
1523 depends on SPI_MASTER
1526 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1529 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1530 shift registers. This driver can be used to provide access
1531 to more gpio outputs.
1533 config GPIO_MAX3191X
1534 tristate "Maxim MAX3191x industrial serializer"
1537 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1538 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1539 chip to make 8 digital 24V inputs available via SPI. Supports
1540 CRC checksums to guard against electromagnetic interference,
1541 as well as undervoltage and overtemperature detection.
1544 tristate "Maxim MAX7301 GPIO expander"
1547 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1550 tristate "Freescale MC33880 high-side/low-side switch"
1552 SPI driver for Freescale MC33880 high-side/low-side switch.
1553 This provides GPIO interface supporting inputs and outputs.
1556 tristate "Generic parallel-in/serial-out shift register"
1558 GPIO driver for SPI compatible parallel-in/serial-out shift
1559 registers. These are input only devices.
1562 tristate "EXAR XRA1403 16-bit GPIO expander"
1565 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1568 tristate "Turris Mox Moxtet bus GPIO expander"
1571 Say yes here if you are building for the Turris Mox router.
1572 This is the driver needed for configuring the GPIOs via the Moxtet
1573 bus. For example the Mox module with SFP cage needs this driver
1574 so that phylink can use corresponding GPIOs.
1578 menu "USB GPIO expanders"
1581 config GPIO_VIPERBOARD
1582 tristate "Viperboard GPIO a & b support"
1583 depends on MFD_VIPERBOARD
1585 Say yes here to access the GPIO signals of Nano River
1586 Technologies Viperboard. There are two GPIO chips on the
1587 board: gpioa and gpiob.
1588 See viperboard API specification and Nano
1589 River Tech's viperboard.h for detailed meaning
1590 of the module parameters.
1594 menu "Virtual GPIO drivers"
1596 config GPIO_AGGREGATOR
1597 tristate "GPIO Aggregator"
1599 Say yes here to enable the GPIO Aggregator, which provides a way to
1600 aggregate existing GPIO lines into a new virtual GPIO chip.
1601 This can serve the following purposes:
1602 - Assign permissions for a collection of GPIO lines to a user,
1603 - Export a collection of GPIO lines to a virtual machine,
1604 - Provide a generic driver for a GPIO-operated device in an
1605 industrial control context, to be operated from userspace using
1606 the GPIO chardev interface.
1609 tristate "GPIO Testing Driver"
1612 This enables GPIO Testing driver, which provides a way to test GPIO
1613 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1614 must be selected for this test.
1615 User could use it through the script in
1616 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in