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.
124 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
126 depends on ATH79 || COMPILE_TEST
128 select GPIOLIB_IRQCHIP
130 Select this option to enable GPIO driver for
131 Atheros AR71XX/AR724X/AR913X SoC devices.
133 config GPIO_RASPBERRYPI_EXP
134 tristate "Raspberry Pi 3 GPIO Expander"
135 default RASPBERRYPI_FIRMWARE
137 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
138 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
139 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
141 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
142 the firmware mailbox to communicate with VideoCore on BCM283x chips.
145 bool "Broadcom Kona GPIO"
146 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
148 Turn on GPIO support for Broadcom "Kona" chips.
151 tristate "BRCMSTB GPIO support"
152 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
153 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
157 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
160 tristate "Cadence GPIO support"
163 select GPIOLIB_IRQCHIP
165 Say yes here to enable support for Cadence GPIO controller.
168 tristate "CLPS711X GPIO support"
169 depends on ARCH_CLPS711X || COMPILE_TEST
172 Say yes here to support GPIO on CLPS711X SoCs.
175 bool "TI Davinci/Keystone GPIO support"
176 default y if ARCH_DAVINCI
177 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
179 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
182 tristate "Synopsys DesignWare APB GPIO driver"
184 select GENERIC_IRQ_CHIP
186 Say Y or M here to build support for the Synopsys DesignWare APB
190 tristate "Spreadtrum EIC support"
191 depends on ARCH_SPRD || COMPILE_TEST
193 select GPIOLIB_IRQCHIP
195 Say yes here to support Spreadtrum EIC device.
198 tristate "Emma Mobile GPIO"
199 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
201 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
205 depends on ARCH_EP93XX
207 select GPIOLIB_IRQCHIP
210 tristate "Support for GPIO pins on XR17V352/354/358"
211 depends on SERIAL_8250_EXAR
213 Selecting this option will enable handling of GPIO pins present
214 on Exar XR17V352/354/358 chips.
217 bool "GE FPGA based GPIO"
221 Support for common GPIO functionality provided on some GE Single Board
224 This driver provides basic support (configure as input or output, read
225 and write pin state) for GPIO implemented in a number of GE single
228 config GPIO_FTGPIO010
229 bool "Faraday FTGPIO010 GPIO"
232 select GPIOLIB_IRQCHIP
233 default (ARCH_GEMINI || ARCH_MOXART)
235 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
236 Cortina systems Gemini platforms, Moxa ART and others.
238 config GPIO_GENERIC_PLATFORM
239 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
242 Say yes here to support basic platform_device memory-mapped GPIO controllers.
245 tristate "Aeroflex Gaisler GRGPIO support"
250 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
251 VHDL IP core library.
254 tristate "Nintendo Wii (Hollywood) GPIO"
257 select GPIOLIB_IRQCHIP
259 Select this to support the GPIO controller of the Nintendo Wii.
264 tristate "Intel ICH GPIO"
265 depends on PCI && X86
269 Say yes here to support the GPIO functionality of a number of Intel
270 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
271 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
272 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
277 tristate "Intel IOP GPIO"
278 depends on ARCH_IOP32X || COMPILE_TEST
281 Say yes here to support the GPIO functionality of a number of Intel
287 bool "Intel IXP4xx GPIO"
288 depends on ARM # For <asm/mach-types.h>
289 depends on ARCH_IXP4XX
291 select GPIOLIB_IRQCHIP
292 select IRQ_DOMAIN_HIERARCHY
294 Say yes here to support the GPIO functionality of a number of Intel
295 IXP4xx series of chips.
300 bool "Loongson-2/3 GPIO support"
301 depends on CPU_LOONGSON2 || CPU_LOONGSON3
303 driver for GPIO functionality on Loongson-2F/3A/3B processors.
306 tristate "NXP LPC18XX/43XX GPIO support"
307 default y if ARCH_LPC18XX
308 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
309 select IRQ_DOMAIN_HIERARCHY
311 Select this option to enable GPIO driver for
312 NXP LPC18XX/43XX devices.
315 tristate "NXP LPC32XX GPIO support"
316 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
318 Select this option to enable GPIO driver for
321 config GPIO_LYNXPOINT
322 tristate "Intel Lynxpoint GPIO support"
323 depends on ACPI && X86
324 select GPIOLIB_IRQCHIP
326 driver for GPIO functionality on Intel Lynxpoint PCH chipset
327 Requires ACPI device enumeration code to set up a platform device.
330 tristate "GPIO support for Fujitsu MB86S7x Platforms"
332 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
335 tristate "MEN 16Z127 GPIO support"
339 Say yes here to support the MEN 16Z127 GPIO Controller
341 config GPIO_MM_LANTIQ
342 bool "Lantiq Memory mapped GPIOs"
343 depends on LANTIQ && SOC_XWAY
345 This enables support for memory mapped GPIOs on the External Bus Unit
346 (EBU) found on Lantiq SoCs. The gpios are output only as they are
347 created by attaching a 16bit latch to the bus.
351 depends on PPC_MPC52xx
354 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
355 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
356 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
361 Say Y here if you're going to use hardware that connects to the
362 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
365 bool "Mediatek MT7621 GPIO Support"
366 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
369 select GPIOLIB_IRQCHIP
371 Say yes here to support the Mediatek MT7621 SoC GPIO device
375 depends on PLAT_ORION || ARCH_MVEBU
377 select GENERIC_IRQ_CHIP
384 select GENERIC_IRQ_CHIP
390 select GENERIC_IRQ_CHIP
393 tristate "Cavium OCTEON GPIO"
394 depends on GPIOLIB && CAVIUM_OCTEON_SOC
397 Say yes here to support the on-chip GPIO lines on the OCTEON
401 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
402 default y if ARCH_OMAP
404 select GENERIC_IRQ_CHIP
405 select GPIOLIB_IRQCHIP
407 Say yes here to enable GPIO support for TI OMAP SoCs.
410 bool "PrimeCell PL061 GPIO support"
413 select GPIOLIB_IRQCHIP
415 Say yes here to support the PrimeCell PL061 GPIO device
417 config GPIO_PMIC_EIC_SPRD
418 tristate "Spreadtrum PMIC EIC support"
419 depends on MFD_SC27XX_PMIC || COMPILE_TEST
421 select GPIOLIB_IRQCHIP
423 Say yes here to support Spreadtrum PMIC EIC device.
426 bool "PXA GPIO support"
427 depends on ARCH_PXA || ARCH_MMP
429 Say yes here to support the PXA GPIO device
432 tristate "Renesas R-Car GPIO"
433 depends on ARCH_RENESAS || COMPILE_TEST
434 select GPIOLIB_IRQCHIP
436 Say yes here to support GPIO on Renesas R-Car SoCs.
441 A 32-bit single register GPIO fixed in/out implementation. This
442 can be used to represent any register as a set of GPIO signals.
444 config GPIO_SAMA5D2_PIOBU
445 tristate "SAMA5D2 PIOBU GPIO support"
446 depends on MFD_SYSCON
450 Say yes here to use the PIOBU pins as GPIOs.
452 PIOBU pins on the SAMA5D2 can be used as GPIOs.
453 The difference from regular GPIOs is that they
454 maintain their value during backup/self-refresh.
457 tristate "SIOX GPIO support"
459 select GPIOLIB_IRQCHIP
461 Say yes here to support SIOX I/O devices. These are units connected
462 via a SIOX bus and have a number of fixed-direction I/O lines.
464 config GPIO_SNPS_CREG
465 bool "Synopsys GPIO via CREG (Control REGisters) driver"
466 depends on ARC || COMPILE_TEST
469 This driver supports GPIOs via CREG on various Synopsys SoCs.
470 This is a single-register MMIO GPIO driver for complex cases
471 where only several fields in register belong to GPIO lines and
472 each GPIO line owns a field with different length and on/off value.
474 config GPIO_SPEAR_SPICS
475 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
476 depends on PLAT_SPEAR
477 select GENERIC_IRQ_CHIP
479 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
482 tristate "Spreadtrum GPIO support"
483 depends on ARCH_SPRD || COMPILE_TEST
485 select GPIOLIB_IRQCHIP
487 Say yes here to support Spreadtrum GPIO device.
490 bool "STA2x11/ConneXt GPIO support"
491 depends on MFD_STA2X11
492 select GENERIC_IRQ_CHIP
494 Say yes here to support the STA2x11/ConneXt GPIO device.
495 The GPIO module has 128 GPIO pins with alternate functions.
498 bool "XWAY STP GPIOs"
499 depends on SOC_XWAY || COMPILE_TEST
502 This enables support for the Serial To Parallel (STP) unit found on
503 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
504 that can be up to 24 bit. This peripheral is aimed at driving leds.
505 Some of the gpios/leds can be auto updated by the soc with dsl and
509 tristate "GPIO based on SYSCON"
510 depends on MFD_SYSCON && OF
512 Say yes here to support GPIO functionality though SYSCON driver.
517 select GENERIC_IRQ_CHIP
521 bool "NVIDIA Tegra GPIO support"
523 depends on ARCH_TEGRA || COMPILE_TEST
526 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
529 tristate "NVIDIA Tegra186 GPIO support"
530 default ARCH_TEGRA_186_SOC
531 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
533 select GPIOLIB_IRQCHIP
535 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
538 tristate "TS-4800 DIO blocks and compatibles"
540 depends on SOC_IMX51 || COMPILE_TEST
543 This driver support TS-4800 FPGA GPIO controllers.
546 tristate "Cavium ThunderX/OCTEON-TX GPIO"
547 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
549 select GPIOLIB_IRQCHIP
550 select IRQ_DOMAIN_HIERARCHY
551 select IRQ_FASTEOI_HIERARCHY_HANDLERS
553 Say yes here to support the on-chip GPIO lines on the ThunderX
554 and OCTEON-TX families of SoCs.
557 tristate "UniPhier GPIO support"
558 depends on ARCH_UNIPHIER || COMPILE_TEST
560 select IRQ_DOMAIN_HIERARCHY
562 Say yes here to support UniPhier GPIOs.
566 depends on ARCH_MXC && SOC_VF610
567 select GPIOLIB_IRQCHIP
569 Say yes here to support Vybrid vf610 GPIOs.
572 tristate "NEC VR4100 series General-purpose I/O Uint support"
573 depends on CPU_VR41XX
575 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
578 tristate "VIA VX855/VX875 GPIO"
579 depends on (X86 || COMPILE_TEST) && PCI
583 Support access to the VX855/VX875 GPIO lines through the gpio library.
585 This driver provides common support for accessing the device,
586 additional drivers must be enabled in order to use the
587 functionality of the device.
590 bool "APM X-Gene GPIO controller support"
591 depends on ARM64 && OF_GPIO
593 This driver is to support the GPIO block within the APM X-Gene SoC
594 platform's generic flash controller. The GPIO pins are muxed with
595 the generic flash controller's address and data pins. Say yes
596 here to enable the GFC GPIO functionality.
599 tristate "APM X-Gene GPIO standby controller support"
600 depends on ARCH_XGENE && OF_GPIO
602 select GPIOLIB_IRQCHIP
603 select IRQ_DOMAIN_HIERARCHY
605 This driver supports the GPIO block within the APM X-Gene
606 Standby Domain. Say yes here to enable the GPIO functionality.
609 tristate "Xilinx GPIO support"
611 Say yes here to support the Xilinx FPGA GPIO device
614 tristate "Netlogic XLP GPIO support"
615 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
616 select GPIOLIB_IRQCHIP
618 This driver provides support for GPIO interface on Netlogic XLP MIPS64
619 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
620 XLP9XX and XLP5XX. The same GPIO controller block is also present in
621 Cavium's ThunderX2 CN99XX SoCs.
626 bool "Xtensa GPIO32 support"
628 depends on HAVE_XTENSA_GPIO32
631 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
632 and EXPSTATE (output) ports
635 bool "LSI ZEVIO SoC memory mapped GPIOs"
636 depends on ARM && OF_GPIO
638 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
641 tristate "Xilinx Zynq GPIO support"
642 depends on ARCH_ZYNQ || ARCH_ZYNQMP
643 select GPIOLIB_IRQCHIP
645 Say yes here to support Xilinx Zynq GPIO controller.
648 bool "ZTE ZX GPIO support"
649 depends on ARCH_ZX || COMPILE_TEST
650 select GPIOLIB_IRQCHIP
652 Say yes here to support the GPIO device on ZTE ZX SoCs.
654 config GPIO_LOONGSON1
655 tristate "Loongson1 GPIO support"
656 depends on MACH_LOONGSON32
659 Say Y or M here to support GPIO on Loongson1 SoCs.
662 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
664 This option enables driver for GPIO on AMDs Fusion Controller Hub,
665 as found on G-series SOCs (eg. GX-412TC)
667 Note: This driver doesn't registers itself automatically, as it
668 needs to be provided with platform specific configuration.
669 (See eg. CONFIG_PCENGINES_APU2.)
672 menu "Port-mapped I/O GPIO drivers"
673 depends on X86 # Unconditional I/O space access
675 config GPIO_104_DIO_48E
676 tristate "ACCES 104-DIO-48E GPIO support"
679 select GPIOLIB_IRQCHIP
681 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
682 104-DIO-24E). The base port addresses for the devices may be
683 configured via the base module parameter. The interrupt line numbers
684 for the devices may be configured via the irq module parameter.
686 config GPIO_104_IDIO_16
687 tristate "ACCES 104-IDIO-16 GPIO support"
690 select GPIOLIB_IRQCHIP
692 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
693 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
694 base port addresses for the devices may be configured via the base
695 module parameter. The interrupt line numbers for the devices may be
696 configured via the irq module parameter.
698 config GPIO_104_IDI_48
699 tristate "ACCES 104-IDI-48 GPIO support"
702 select GPIOLIB_IRQCHIP
704 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
705 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
706 the devices may be configured via the base module parameter. The
707 interrupt line numbers for the devices may be configured via the irq
711 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
713 This option enables support for GPIOs found on Fintek Super-I/O
714 chips F71869, F71869A, F71882FG, F71889F and F81866.
716 To compile this driver as a module, choose M here: the module will
717 be called f7188x-gpio.
720 tristate "Diamond Systems GPIO-MM GPIO support"
724 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
726 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
727 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
728 support for these 48 channels of digital I/O.
730 The base port addresses for the devices may be configured via the base
731 array module parameter.
734 tristate "IT87xx GPIO support"
736 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
738 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
739 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
742 To compile this driver as a module, choose M here: the module will
746 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
747 depends on (X86 || COMPILE_TEST) && PCI
751 Say yes here to support GPIO interface on Intel Poulsbo SCH,
752 Intel Tunnel Creek processor, Intel Centerton processor or
753 Intel Quark X1000 SoC.
755 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
756 powered by the core power rail and are turned off during sleep
757 modes (S3 and higher). The remaining four GPIOs are powered by
758 the Intel SCH suspend power supply. These GPIOs remain
759 active during S3. The suspend powered GPIOs can be used to wake the
760 system from the Suspend-to-RAM state.
762 The Intel Tunnel Creek processor has 5 GPIOs powered by the
763 core power rail and 9 from suspend power supply.
765 The Intel Centerton processor has a total of 30 GPIO pins.
766 Twenty-one are powered by the core power rail and 9 from the
767 suspend power supply.
769 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
770 power well and 6 from the suspend power well.
773 tristate "SMSC SCH311x SuperI/O GPIO"
775 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
776 SCH3116 "Super I/O" chipsets.
778 To compile this driver as a module, choose M here: the module will
779 be called gpio-sch311x.
782 tristate "TS-5500 DIO blocks and compatibles"
783 depends on TS5500 || COMPILE_TEST
785 This driver supports Digital I/O exposed by pin blocks found on some
786 Technologic Systems platforms. It includes, but is not limited to, 3
787 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
791 tristate "Winbond Super I/O GPIO support"
794 This option enables support for GPIOs found on Winbond Super I/O
796 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
799 You will need to provide a module parameter "gpios", or a
800 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
801 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
803 To compile this driver as a module, choose M here: the module will
804 be called gpio-winbond.
807 tristate "WinSystems WS16C48 GPIO support"
809 select GPIOLIB_IRQCHIP
811 Enables GPIO support for the WinSystems WS16C48. The base port
812 addresses for the devices may be configured via the base module
813 parameter. The interrupt line numbers for the devices may be
814 configured via the irq module parameter.
818 menu "I2C GPIO expanders"
822 tristate "ADP5588 I2C GPIO expander"
824 This option enables support for 18 GPIOs found
825 on Analog Devices ADP5588 GPIO Expanders.
827 config GPIO_ADP5588_IRQ
828 bool "Interrupt controller support for ADP5588"
829 depends on GPIO_ADP5588=y
830 select GPIOLIB_IRQCHIP
832 Say yes here to enable the adp5588 to be used as an interrupt
833 controller. It requires the driver to be built in the kernel.
836 tristate "Avionic Design N-bit GPIO expander"
838 select GPIOLIB_IRQCHIP
840 This option enables support for N GPIOs found on Avionic Design
841 I2C GPIO expanders. The register space will be extended by powers
842 of two, so the controller will need to accommodate for that. For
843 example: if a controller provides 48 pins, 6 registers will be
844 enough to represent all pins, but the driver will assume a
845 register layout for 64 pins (8 registers).
848 tristate "Gateworks PLD GPIO Expander"
851 Say yes here to provide access to the Gateworks I2C PLD GPIO
852 Expander. This is used at least on the Cambria GW2358-4.
855 tristate "Maxim MAX7300 GPIO expander"
858 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
861 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
863 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
864 Port Expanders. Each IO port on these chips has a fixed role of
865 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
866 Input and Output (designed by 'P'). The combinations are listed
869 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
870 max7322 (4I4O), max7323 (4P4O)
872 16 bits: max7324 (8I8O), max7325 (8P8O),
873 max7326 (4I12O), max7327 (4P12O)
875 Board setup code must specify the model to use, and the start
876 number for these GPIOs.
878 config GPIO_MAX732X_IRQ
879 bool "Interrupt controller support for MAX732x"
880 depends on GPIO_MAX732X=y
881 select GPIOLIB_IRQCHIP
883 Say yes here to enable the max732x to be used as an interrupt
884 controller. It requires the driver to be built in the kernel.
886 config GPIO_MC9S08DZ60
887 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
888 depends on I2C=y && MACH_MX35_3DS
890 Select this to enable the MC9S08DZ60 GPIO driver
893 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
896 Say yes here to provide access to several register-oriented
897 SMBus I/O expanders, made mostly by NXP or TI. Compatible
900 4 bits: pca9536, pca9537
902 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
903 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
905 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
910 40 bits: pca9505, pca9698
912 config GPIO_PCA953X_IRQ
913 bool "Interrupt controller support for PCA953x"
914 depends on GPIO_PCA953X=y
915 select GPIOLIB_IRQCHIP
917 Say yes here to enable the pca953x to be used as an interrupt
918 controller. It requires the driver to be built in the kernel.
921 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
922 select GPIOLIB_IRQCHIP
925 Say yes here to provide access to most "quasi-bidirectional" I2C
926 GPIO expanders used for additional digital outputs or inputs.
927 Most of these parts are from NXP, though TI is a second source for
928 some of them. Compatible models include:
930 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
931 pca9670, pca9672, pca9674, pca9674a,
934 16 bits: pcf8575, pcf8575c, pca8575,
935 pca9671, pca9673, pca9675
937 Your board setup code will need to declare the expanders in
938 use, and assign numbers to the GPIOs they expose. Those GPIOs
939 can then be used from drivers and other kernel code, just like
940 other GPIOs, but only accessible from task contexts.
942 This driver provides an in-kernel interface to those GPIOs using
943 platform-neutral GPIO calls.
946 tristate "TPIC2810 8-Bit I2C GPO expander"
948 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
950 To compile this driver as a module, choose M here: the module will
951 be called gpio-tpic2810.
954 tristate "Technologic Systems FPGA I2C GPIO"
955 depends on SOC_IMX6 || COMPILE_TEST
958 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
959 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
963 menu "MFD GPIO expanders"
966 tristate "GPIO Support for ADP5520 PMIC"
967 depends on PMIC_ADP5520
969 This option enables support for on-chip GPIO found
970 on Analog Devices ADP5520 PMICs.
972 config GPIO_ALTERA_A10SR
973 tristate "Altera Arria10 System Resource GPIO"
974 depends on MFD_ALTERA_A10SR
976 Driver for Arria10 Development Kit GPIO expansion which
977 includes reads of pushbuttons and DIP switches as well
981 tristate "Wolfson Microelectronics Arizona class devices"
982 depends on MFD_ARIZONA
984 Support for GPIOs on Wolfson Arizona class devices.
987 tristate "ROHM BD70528 GPIO support"
988 depends on MFD_ROHM_BD70528
990 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
991 available on the ROHM PMIC in total. The GPIOs can also
994 This driver can also be built as a module. If so, the module
995 will be called gpio-bd70528.
997 config GPIO_BD9571MWV
998 tristate "ROHM BD9571 GPIO support"
999 depends on MFD_BD9571MWV
1001 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1002 available on the ROHM PMIC in total, both of which can also
1003 generate interrupts.
1005 This driver can also be built as a module. If so, the module
1006 will be called gpio-bd9571mwv.
1008 config GPIO_CRYSTAL_COVE
1009 tristate "GPIO support for Crystal Cove PMIC"
1010 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1011 select GPIOLIB_IRQCHIP
1013 Support for GPIO pins on Crystal Cove PMIC.
1015 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1018 This driver can also be built as a module. If so, the module will be
1019 called gpio-crystalcove.
1022 tristate "AMD CS5535/CS5536 GPIO support"
1023 depends on X86 || MIPS || COMPILE_TEST
1024 depends on MFD_CS5535
1026 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1027 can be used for quite a number of things. The CS5535/6 is found on
1028 AMD Geode and Lemote Yeeloong devices.
1033 tristate "Dialog DA9052 GPIO"
1034 depends on PMIC_DA9052
1036 Say yes here to enable the GPIO driver for the DA9052 chip.
1039 tristate "Dialog Semiconductor DA9055 GPIO"
1040 depends on MFD_DA9055
1042 Say yes here to enable the GPIO driver for the DA9055 chip.
1044 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1045 be controller by this driver.
1047 If driver is built as a module it will be called gpio-da9055.
1050 tristate "Diolan DLN2 GPIO support"
1052 select GPIOLIB_IRQCHIP
1055 Select this option to enable GPIO driver for the Diolan DLN2
1058 This driver can also be built as a module. If so, the module
1059 will be called gpio-dln2.
1062 bool "HTC EGPIO support"
1063 depends on GPIOLIB && ARM
1065 This driver supports the CPLD egpio chip present on
1066 several HTC phones. It provides basic support for input
1067 pins, output pins, and irqs.
1069 config GPIO_JANZ_TTL
1070 tristate "Janz VMOD-TTL Digital IO Module"
1071 depends on MFD_JANZ_CMODIO
1073 This enables support for the Janz VMOD-TTL Digital IO module.
1074 This driver provides support for driving the pins in output
1075 mode only. Input mode is not supported.
1078 tristate "Kontron ETX / COMexpress GPIO"
1079 depends on MFD_KEMPLD
1081 This enables support for the PLD GPIO interface on some Kontron ETX
1082 and COMexpress (ETXexpress) modules.
1084 This driver can also be built as a module. If so, the module will be
1088 tristate "TI/National Semiconductor LP3943 GPIO expander"
1089 depends on MFD_LP3943
1091 GPIO driver for LP3943 MFD.
1092 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1093 Open drain outputs are required for this usage.
1096 tristate "TI LP873X GPO"
1097 depends on MFD_TI_LP873X
1099 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1102 This driver can also be built as a module. If so, the module will be
1106 tristate "TI LP87565 GPIO"
1107 depends on MFD_TI_LP87565
1109 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1112 This driver can also be built as a module. If so, the module will be
1113 called gpio-lp87565.
1116 tristate "Cirrus Logic Madera class codecs"
1117 depends on PINCTRL_MADERA
1119 Support for GPIOs on Cirrus Logic Madera class codecs.
1121 config GPIO_MAX77620
1122 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1123 depends on MFD_MAX77620
1125 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1126 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1127 driver also provides interrupt support for each of the gpios.
1128 Say yes here to enable the max77620 to be used as gpio controller.
1130 config GPIO_MAX77650
1131 tristate "Maxim MAX77650/77651 GPIO support"
1132 depends on MFD_MAX77650
1134 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1135 These chips have a single pin that can be configured as GPIO.
1138 bool "Intel MSIC mixed signal gpio support"
1139 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1141 Enable support for GPIO on intel MSIC controllers found in
1145 bool "TI PALMAS series PMICs GPIO"
1146 depends on MFD_PALMAS
1148 Select this option to enable GPIO driver for the TI PALMAS
1152 bool "RICOH RC5T583 GPIO"
1153 depends on MFD_RC5T583
1155 Select this option to enable GPIO driver for the Ricoh RC5T583
1157 This driver provides the support for driving/reading the gpio pins
1158 of RC5T583 device through standard gpio library.
1162 depends on MFD_STMPE
1164 select GPIOLIB_IRQCHIP
1166 This enables support for the GPIOs found on the STMPE I/O
1170 bool "TC3589X GPIOs"
1171 depends on MFD_TC3589X
1173 select GPIOLIB_IRQCHIP
1175 This enables support for the GPIOs found on the TC3589X
1178 config GPIO_TIMBERDALE
1179 bool "Support for timberdale GPIO IP"
1180 depends on MFD_TIMBERDALE
1182 Add support for the GPIO IP in the timberdale FPGA.
1184 config GPIO_TPS65086
1185 tristate "TI TPS65086 GPO"
1186 depends on MFD_TPS65086
1188 This driver supports the GPO on TI TPS65086x PMICs.
1190 config GPIO_TPS65218
1191 tristate "TPS65218 GPIO"
1192 depends on MFD_TPS65218
1194 Select this option to enable GPIO driver for the TPS65218
1197 config GPIO_TPS6586X
1198 bool "TPS6586X GPIO"
1199 depends on MFD_TPS6586X
1201 Select this option to enable GPIO driver for the TPS6586X
1204 config GPIO_TPS65910
1205 bool "TPS65910 GPIO"
1206 depends on MFD_TPS65910
1208 Select this option to enable GPIO driver for the TPS65910
1211 config GPIO_TPS65912
1212 tristate "TI TPS65912 GPIO"
1213 depends on MFD_TPS65912
1215 This driver supports TPS65912 gpio chip
1217 config GPIO_TPS68470
1218 bool "TPS68470 GPIO"
1219 depends on MFD_TPS68470
1221 Select this option to enable GPIO driver for the TPS68470
1223 There are 7 GPIOs and few sensor related GPIOs supported
1224 by the TPS68470. While the 7 GPIOs can be configured as
1225 input or output as appropriate, the sensor related GPIOs
1226 are "output only" GPIOs.
1228 This driver config is bool, as the GPIO functionality
1229 of the TPS68470 must be available before dependent
1233 tristate "TQ-Systems QTMX86 GPIO"
1234 depends on MFD_TQMX86 || COMPILE_TEST
1235 select GPIOLIB_IRQCHIP
1237 This driver supports GPIO on the TQMX86 IO controller.
1240 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1241 depends on TWL4030_CORE
1243 Say yes here to access the GPIO signals of various multi-function
1244 power management chips from Texas Instruments.
1247 tristate "TWL6040 GPO"
1248 depends on TWL6040_CORE
1250 Say yes here to access the GPO signals of twl6040
1251 audio chip from Texas Instruments.
1254 tristate "Philips UCB1400 GPIO"
1255 depends on UCB1400_CORE
1257 This enables support for the Philips UCB1400 GPIO pins.
1258 The UCB1400 is an AC97 audio codec.
1260 config GPIO_WHISKEY_COVE
1261 tristate "GPIO support for Whiskey Cove PMIC"
1262 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1263 select GPIOLIB_IRQCHIP
1265 Support for GPIO pins on Whiskey Cove PMIC.
1267 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1270 This driver can also be built as a module. If so, the module will be
1274 tristate "WM831x GPIOs"
1275 depends on MFD_WM831X
1277 Say yes here to access the GPIO signals of WM831x power management
1278 chips from Wolfson Microelectronics.
1281 tristate "WM8350 GPIOs"
1282 depends on MFD_WM8350
1284 Say yes here to access the GPIO signals of WM8350 power management
1285 chips from Wolfson Microelectronics.
1288 tristate "WM8994 GPIOs"
1289 depends on MFD_WM8994
1291 Say yes here to access the GPIO signals of WM8994 audio hub
1292 CODECs from Wolfson Microelectronics.
1296 menu "PCI GPIO expanders"
1300 tristate "AMD 8111 GPIO driver"
1301 depends on X86 || COMPILE_TEST
1303 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1305 Note, that usually system firmware/ACPI handles GPIO pins on their
1306 own and users might easily break their systems with uncarefull usage
1312 tristate "BT8XX GPIO abuser"
1313 depends on VIDEO_BT848=n
1315 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1316 as a cheap PCI GPIO card.
1318 This chip can be found on Miro, Hauppauge and STB TV-cards.
1320 The card needs to be physically altered for using it as a
1321 GPIO card. For more information on how to build a GPIO card
1322 from a BT8xx TV card, see the documentation file at
1323 Documentation/driver-api/bt8xxgpio.rst
1327 config GPIO_INTEL_MID
1328 bool "Intel MID GPIO support"
1329 depends on X86_INTEL_MID
1330 select GPIOLIB_IRQCHIP
1332 Say Y here to support Intel MID GPIO.
1334 config GPIO_MERRIFIELD
1335 tristate "Intel Merrifield GPIO support"
1336 depends on X86_INTEL_MID
1337 select GPIOLIB_IRQCHIP
1339 Say Y here to support Intel Merrifield GPIO.
1342 tristate "Mellanox BlueField SoC GPIO"
1343 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1346 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1349 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1350 depends on X86 || COMPILE_TEST
1351 select GENERIC_IRQ_CHIP
1353 ML7213 is companion chip for Intel Atom E6xx series.
1354 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1355 Hub) which is for IVI(In-Vehicle Infotainment) use.
1356 This driver can access the IOH's GPIO device.
1359 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1360 depends on X86_32 || MIPS || COMPILE_TEST
1361 select GENERIC_IRQ_CHIP
1363 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1364 which is an IOH(Input/Output Hub) for x86 embedded processor.
1365 This driver can access PCH GPIO device.
1367 This driver also can be used for LAPIS Semiconductor IOH(Input/
1368 Output Hub), ML7223 and ML7831.
1369 ML7223 IOH is for MP(Media Phone) use.
1370 ML7831 IOH is for general purpose use.
1371 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1372 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1374 config GPIO_PCI_IDIO_16
1375 tristate "ACCES PCI-IDIO-16 GPIO support"
1376 select GPIOLIB_IRQCHIP
1378 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1379 generated when any of the inputs change state (low to high or high to
1380 low). Input filter control is not supported by this driver, and the
1381 input filters are deactivated by this driver.
1383 config GPIO_PCIE_IDIO_24
1384 tristate "ACCES PCIe-IDIO-24 GPIO support"
1385 select GPIOLIB_IRQCHIP
1387 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1388 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1389 when any of the inputs change state (low to high or high to low).
1390 Input filter control is not supported by this driver, and the input
1391 filters are deactivated by this driver.
1394 tristate "RDC R-321x GPIO support"
1398 Support for the RDC R321x SoC GPIOs over southbridge
1399 PCI configuration space.
1401 config GPIO_SODAVILLE
1402 bool "Intel Sodaville GPIO support"
1403 depends on X86 && OF
1405 select GENERIC_IRQ_CHIP
1407 Say Y here to support Intel Sodaville GPIO.
1411 menu "SPI GPIO expanders"
1412 depends on SPI_MASTER
1415 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1418 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1419 shift registers. This driver can be used to provide access
1420 to more gpio outputs.
1422 config GPIO_MAX3191X
1423 tristate "Maxim MAX3191x industrial serializer"
1426 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1427 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1428 chip to make 8 digital 24V inputs available via SPI. Supports
1429 CRC checksums to guard against electromagnetic interference,
1430 as well as undervoltage and overtemperature detection.
1433 tristate "Maxim MAX7301 GPIO expander"
1436 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1439 tristate "Freescale MC33880 high-side/low-side switch"
1441 SPI driver for Freescale MC33880 high-side/low-side switch.
1442 This provides GPIO interface supporting inputs and outputs.
1445 tristate "Generic parallel-in/serial-out shift register"
1447 GPIO driver for SPI compatible parallel-in/serial-out shift
1448 registers. These are input only devices.
1451 tristate "EXAR XRA1403 16-bit GPIO expander"
1454 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1457 tristate "Turris Mox Moxtet bus GPIO expander"
1460 Say yes here if you are building for the Turris Mox router.
1461 This is the driver needed for configuring the GPIOs via the Moxtet
1462 bus. For example the Mox module with SFP cage needs this driver
1463 so that phylink can use corresponding GPIOs.
1467 menu "USB GPIO expanders"
1470 config GPIO_VIPERBOARD
1471 tristate "Viperboard GPIO a & b support"
1472 depends on MFD_VIPERBOARD
1474 Say yes here to access the GPIO signals of Nano River
1475 Technologies Viperboard. There are two GPIO chips on the
1476 board: gpioa and gpiob.
1477 See viperboard API specification and Nano
1478 River Tech's viperboard.h for detailed meaning
1479 of the module parameters.
1484 tristate "GPIO Testing Driver"
1487 This enables GPIO Testing driver, which provides a way to test GPIO
1488 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1489 must be selected for this test.
1490 User could use it through the script in
1491 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in