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 || ARCH_IOP33X || 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
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.
314 config GPIO_LYNXPOINT
315 tristate "Intel Lynxpoint GPIO support"
316 depends on ACPI && X86
317 select GPIOLIB_IRQCHIP
319 driver for GPIO functionality on Intel Lynxpoint PCH chipset
320 Requires ACPI device enumeration code to set up a platform device.
323 tristate "GPIO support for Fujitsu MB86S7x Platforms"
325 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
328 tristate "MEN 16Z127 GPIO support"
332 Say yes here to support the MEN 16Z127 GPIO Controller
334 config GPIO_MM_LANTIQ
335 bool "Lantiq Memory mapped GPIOs"
336 depends on LANTIQ && SOC_XWAY
338 This enables support for memory mapped GPIOs on the External Bus Unit
339 (EBU) found on Lantiq SoCs. The gpios are output only as they are
340 created by attaching a 16bit latch to the bus.
344 depends on PPC_MPC52xx
347 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
348 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
349 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
354 Say Y here if you're going to use hardware that connects to the
355 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
358 bool "Mediatek MT7621 GPIO Support"
359 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
362 select GPIOLIB_IRQCHIP
364 Say yes here to support the Mediatek MT7621 SoC GPIO device
368 depends on PLAT_ORION || ARCH_MVEBU
370 select GENERIC_IRQ_CHIP
377 select GENERIC_IRQ_CHIP
383 select GENERIC_IRQ_CHIP
386 tristate "Cavium OCTEON GPIO"
387 depends on GPIOLIB && CAVIUM_OCTEON_SOC
390 Say yes here to support the on-chip GPIO lines on the OCTEON
394 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
395 default y if ARCH_OMAP
397 select GENERIC_IRQ_CHIP
398 select GPIOLIB_IRQCHIP
400 Say yes here to enable GPIO support for TI OMAP SoCs.
403 bool "PrimeCell PL061 GPIO support"
406 select GPIOLIB_IRQCHIP
408 Say yes here to support the PrimeCell PL061 GPIO device
410 config GPIO_PMIC_EIC_SPRD
411 tristate "Spreadtrum PMIC EIC support"
412 depends on MFD_SC27XX_PMIC || COMPILE_TEST
414 select GPIOLIB_IRQCHIP
416 Say yes here to support Spreadtrum PMIC EIC device.
419 bool "PXA GPIO support"
420 depends on ARCH_PXA || ARCH_MMP
422 Say yes here to support the PXA GPIO device
425 tristate "Renesas R-Car GPIO"
426 depends on ARCH_RENESAS || COMPILE_TEST
427 select GPIOLIB_IRQCHIP
429 Say yes here to support GPIO on Renesas R-Car SoCs.
434 A 32-bit single register GPIO fixed in/out implementation. This
435 can be used to represent any register as a set of GPIO signals.
437 config GPIO_SAMA5D2_PIOBU
438 tristate "SAMA5D2 PIOBU GPIO support"
439 depends on MFD_SYSCON
443 Say yes here to use the PIOBU pins as GPIOs.
445 PIOBU pins on the SAMA5D2 can be used as GPIOs.
446 The difference from regular GPIOs is that they
447 maintain their value during backup/self-refresh.
450 tristate "SIOX GPIO support"
452 select GPIOLIB_IRQCHIP
454 Say yes here to support SIOX I/O devices. These are units connected
455 via a SIOX bus and have a number of fixed-direction I/O lines.
457 config GPIO_SNPS_CREG
458 bool "Synopsys GPIO via CREG (Control REGisters) driver"
459 depends on ARC || COMPILE_TEST
462 This driver supports GPIOs via CREG on various Synopsys SoCs.
463 This is a single-register MMIO GPIO driver for complex cases
464 where only several fields in register belong to GPIO lines and
465 each GPIO line owns a field with different length and on/off value.
467 config GPIO_SPEAR_SPICS
468 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
469 depends on PLAT_SPEAR
470 select GENERIC_IRQ_CHIP
472 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
475 tristate "Spreadtrum GPIO support"
476 depends on ARCH_SPRD || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
480 Say yes here to support Spreadtrum GPIO device.
483 bool "STA2x11/ConneXt GPIO support"
484 depends on MFD_STA2X11
485 select GENERIC_IRQ_CHIP
487 Say yes here to support the STA2x11/ConneXt GPIO device.
488 The GPIO module has 128 GPIO pins with alternate functions.
491 bool "XWAY STP GPIOs"
492 depends on SOC_XWAY || COMPILE_TEST
495 This enables support for the Serial To Parallel (STP) unit found on
496 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
497 that can be up to 24 bit. This peripheral is aimed at driving leds.
498 Some of the gpios/leds can be auto updated by the soc with dsl and
502 tristate "GPIO based on SYSCON"
503 depends on MFD_SYSCON && OF
505 Say yes here to support GPIO functionality though SYSCON driver.
510 select GENERIC_IRQ_CHIP
514 bool "NVIDIA Tegra GPIO support"
516 depends on ARCH_TEGRA || COMPILE_TEST
519 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
522 tristate "NVIDIA Tegra186 GPIO support"
523 default ARCH_TEGRA_186_SOC
524 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
526 select GPIOLIB_IRQCHIP
528 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
531 tristate "TS-4800 DIO blocks and compatibles"
533 depends on SOC_IMX51 || COMPILE_TEST
536 This driver support TS-4800 FPGA GPIO controllers.
539 tristate "Cavium ThunderX/OCTEON-TX GPIO"
540 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
542 select IRQ_DOMAIN_HIERARCHY
543 select IRQ_FASTEOI_HIERARCHY_HANDLERS
545 Say yes here to support the on-chip GPIO lines on the ThunderX
546 and OCTEON-TX families of SoCs.
549 tristate "UniPhier GPIO support"
550 depends on ARCH_UNIPHIER || COMPILE_TEST
552 select IRQ_DOMAIN_HIERARCHY
554 Say yes here to support UniPhier GPIOs.
558 depends on ARCH_MXC && SOC_VF610
559 select GPIOLIB_IRQCHIP
561 Say yes here to support Vybrid vf610 GPIOs.
564 tristate "NEC VR4100 series General-purpose I/O Uint support"
565 depends on CPU_VR41XX
567 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
570 tristate "VIA VX855/VX875 GPIO"
571 depends on (X86 || COMPILE_TEST) && PCI
575 Support access to the VX855/VX875 GPIO lines through the gpio library.
577 This driver provides common support for accessing the device,
578 additional drivers must be enabled in order to use the
579 functionality of the device.
582 bool "APM X-Gene GPIO controller support"
583 depends on ARM64 && OF_GPIO
585 This driver is to support the GPIO block within the APM X-Gene SoC
586 platform's generic flash controller. The GPIO pins are muxed with
587 the generic flash controller's address and data pins. Say yes
588 here to enable the GFC GPIO functionality.
591 tristate "APM X-Gene GPIO standby controller support"
592 depends on ARCH_XGENE && OF_GPIO
594 select GPIOLIB_IRQCHIP
595 select IRQ_DOMAIN_HIERARCHY
597 This driver supports the GPIO block within the APM X-Gene
598 Standby Domain. Say yes here to enable the GPIO functionality.
601 tristate "Xilinx GPIO support"
603 Say yes here to support the Xilinx FPGA GPIO device
606 tristate "Netlogic XLP GPIO support"
607 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
608 select GPIOLIB_IRQCHIP
610 This driver provides support for GPIO interface on Netlogic XLP MIPS64
611 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
612 XLP9XX and XLP5XX. The same GPIO controller block is also present in
613 Cavium's ThunderX2 CN99XX SoCs.
618 bool "Xtensa GPIO32 support"
620 depends on HAVE_XTENSA_GPIO32
623 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
624 and EXPSTATE (output) ports
627 bool "LSI ZEVIO SoC memory mapped GPIOs"
628 depends on ARM && OF_GPIO
630 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
633 tristate "Xilinx Zynq GPIO support"
634 depends on ARCH_ZYNQ || ARCH_ZYNQMP
635 select GPIOLIB_IRQCHIP
637 Say yes here to support Xilinx Zynq GPIO controller.
640 bool "ZTE ZX GPIO support"
641 depends on ARCH_ZX || COMPILE_TEST
642 select GPIOLIB_IRQCHIP
644 Say yes here to support the GPIO device on ZTE ZX SoCs.
646 config GPIO_LOONGSON1
647 tristate "Loongson1 GPIO support"
648 depends on MACH_LOONGSON32
651 Say Y or M here to support GPIO on Loongson1 SoCs.
654 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
656 This option enables driver for GPIO on AMDs Fusion Controller Hub,
657 as found on G-series SOCs (eg. GX-412TC)
659 Note: This driver doesn't registers itself automatically, as it
660 needs to be provided with platform specific configuration.
661 (See eg. CONFIG_PCENGINES_APU2.)
664 menu "Port-mapped I/O GPIO drivers"
665 depends on X86 # Unconditional I/O space access
667 config GPIO_104_DIO_48E
668 tristate "ACCES 104-DIO-48E GPIO support"
671 select GPIOLIB_IRQCHIP
673 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
674 104-DIO-24E). The base port addresses for the devices may be
675 configured via the base module parameter. The interrupt line numbers
676 for the devices may be configured via the irq module parameter.
678 config GPIO_104_IDIO_16
679 tristate "ACCES 104-IDIO-16 GPIO support"
682 select GPIOLIB_IRQCHIP
684 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
685 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
686 base port addresses for the devices may be configured via the base
687 module parameter. The interrupt line numbers for the devices may be
688 configured via the irq module parameter.
690 config GPIO_104_IDI_48
691 tristate "ACCES 104-IDI-48 GPIO support"
694 select GPIOLIB_IRQCHIP
696 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
697 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
698 the devices may be configured via the base module parameter. The
699 interrupt line numbers for the devices may be configured via the irq
703 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
705 This option enables support for GPIOs found on Fintek Super-I/O
706 chips F71869, F71869A, F71882FG, F71889F and F81866.
708 To compile this driver as a module, choose M here: the module will
709 be called f7188x-gpio.
712 tristate "Diamond Systems GPIO-MM GPIO support"
716 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
718 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
719 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
720 support for these 48 channels of digital I/O.
722 The base port addresses for the devices may be configured via the base
723 array module parameter.
726 tristate "IT87xx GPIO support"
728 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
730 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
731 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
734 To compile this driver as a module, choose M here: the module will
738 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
739 depends on (X86 || COMPILE_TEST) && PCI
743 Say yes here to support GPIO interface on Intel Poulsbo SCH,
744 Intel Tunnel Creek processor, Intel Centerton processor or
745 Intel Quark X1000 SoC.
747 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
748 powered by the core power rail and are turned off during sleep
749 modes (S3 and higher). The remaining four GPIOs are powered by
750 the Intel SCH suspend power supply. These GPIOs remain
751 active during S3. The suspend powered GPIOs can be used to wake the
752 system from the Suspend-to-RAM state.
754 The Intel Tunnel Creek processor has 5 GPIOs powered by the
755 core power rail and 9 from suspend power supply.
757 The Intel Centerton processor has a total of 30 GPIO pins.
758 Twenty-one are powered by the core power rail and 9 from the
759 suspend power supply.
761 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
762 power well and 6 from the suspend power well.
765 tristate "SMSC SCH311x SuperI/O GPIO"
767 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
768 SCH3116 "Super I/O" chipsets.
770 To compile this driver as a module, choose M here: the module will
771 be called gpio-sch311x.
774 tristate "TS-5500 DIO blocks and compatibles"
775 depends on TS5500 || COMPILE_TEST
777 This driver supports Digital I/O exposed by pin blocks found on some
778 Technologic Systems platforms. It includes, but is not limited to, 3
779 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
783 tristate "Winbond Super I/O GPIO support"
786 This option enables support for GPIOs found on Winbond Super I/O
788 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
791 You will need to provide a module parameter "gpios", or a
792 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
793 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
795 To compile this driver as a module, choose M here: the module will
796 be called gpio-winbond.
799 tristate "WinSystems WS16C48 GPIO support"
801 select GPIOLIB_IRQCHIP
803 Enables GPIO support for the WinSystems WS16C48. The base port
804 addresses for the devices may be configured via the base module
805 parameter. The interrupt line numbers for the devices may be
806 configured via the irq module parameter.
810 menu "I2C GPIO expanders"
814 tristate "ADP5588 I2C GPIO expander"
816 This option enables support for 18 GPIOs found
817 on Analog Devices ADP5588 GPIO Expanders.
819 config GPIO_ADP5588_IRQ
820 bool "Interrupt controller support for ADP5588"
821 depends on GPIO_ADP5588=y
822 select GPIOLIB_IRQCHIP
824 Say yes here to enable the adp5588 to be used as an interrupt
825 controller. It requires the driver to be built in the kernel.
828 tristate "Avionic Design N-bit GPIO expander"
830 select GPIOLIB_IRQCHIP
832 This option enables support for N GPIOs found on Avionic Design
833 I2C GPIO expanders. The register space will be extended by powers
834 of two, so the controller will need to accommodate for that. For
835 example: if a controller provides 48 pins, 6 registers will be
836 enough to represent all pins, but the driver will assume a
837 register layout for 64 pins (8 registers).
840 tristate "Gateworks PLD GPIO Expander"
843 Say yes here to provide access to the Gateworks I2C PLD GPIO
844 Expander. This is used at least on the Cambria GW2358-4.
847 tristate "Maxim MAX7300 GPIO expander"
850 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
853 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
855 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
856 Port Expanders. Each IO port on these chips has a fixed role of
857 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
858 Input and Output (designed by 'P'). The combinations are listed
861 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
862 max7322 (4I4O), max7323 (4P4O)
864 16 bits: max7324 (8I8O), max7325 (8P8O),
865 max7326 (4I12O), max7327 (4P12O)
867 Board setup code must specify the model to use, and the start
868 number for these GPIOs.
870 config GPIO_MAX732X_IRQ
871 bool "Interrupt controller support for MAX732x"
872 depends on GPIO_MAX732X=y
873 select GPIOLIB_IRQCHIP
875 Say yes here to enable the max732x to be used as an interrupt
876 controller. It requires the driver to be built in the kernel.
878 config GPIO_MC9S08DZ60
879 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
880 depends on I2C=y && MACH_MX35_3DS
882 Select this to enable the MC9S08DZ60 GPIO driver
885 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
888 Say yes here to provide access to several register-oriented
889 SMBus I/O expanders, made mostly by NXP or TI. Compatible
892 4 bits: pca9536, pca9537
894 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
895 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
897 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
902 40 bits: pca9505, pca9698
904 config GPIO_PCA953X_IRQ
905 bool "Interrupt controller support for PCA953x"
906 depends on GPIO_PCA953X=y
907 select GPIOLIB_IRQCHIP
909 Say yes here to enable the pca953x to be used as an interrupt
910 controller. It requires the driver to be built in the kernel.
913 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
914 select GPIOLIB_IRQCHIP
917 Say yes here to provide access to most "quasi-bidirectional" I2C
918 GPIO expanders used for additional digital outputs or inputs.
919 Most of these parts are from NXP, though TI is a second source for
920 some of them. Compatible models include:
922 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
923 pca9670, pca9672, pca9674, pca9674a,
926 16 bits: pcf8575, pcf8575c, pca8575,
927 pca9671, pca9673, pca9675
929 Your board setup code will need to declare the expanders in
930 use, and assign numbers to the GPIOs they expose. Those GPIOs
931 can then be used from drivers and other kernel code, just like
932 other GPIOs, but only accessible from task contexts.
934 This driver provides an in-kernel interface to those GPIOs using
935 platform-neutral GPIO calls.
938 tristate "TPIC2810 8-Bit I2C GPO expander"
940 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
942 To compile this driver as a module, choose M here: the module will
943 be called gpio-tpic2810.
946 tristate "Technologic Systems FPGA I2C GPIO"
947 depends on SOC_IMX6 || COMPILE_TEST
950 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
951 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
955 menu "MFD GPIO expanders"
958 tristate "GPIO Support for ADP5520 PMIC"
959 depends on PMIC_ADP5520
961 This option enables support for on-chip GPIO found
962 on Analog Devices ADP5520 PMICs.
964 config GPIO_ALTERA_A10SR
965 tristate "Altera Arria10 System Resource GPIO"
966 depends on MFD_ALTERA_A10SR
968 Driver for Arria10 Development Kit GPIO expansion which
969 includes reads of pushbuttons and DIP switches as well
973 tristate "Wolfson Microelectronics Arizona class devices"
974 depends on MFD_ARIZONA
976 Support for GPIOs on Wolfson Arizona class devices.
979 tristate "ROHM BD70528 GPIO support"
980 depends on MFD_ROHM_BD70528
982 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
983 available on the ROHM PMIC in total. The GPIOs can also
986 This driver can also be built as a module. If so, the module
987 will be called gpio-bd70528.
989 config GPIO_BD9571MWV
990 tristate "ROHM BD9571 GPIO support"
991 depends on MFD_BD9571MWV
993 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
994 available on the ROHM PMIC in total, both of which can also
997 This driver can also be built as a module. If so, the module
998 will be called gpio-bd9571mwv.
1000 config GPIO_CRYSTAL_COVE
1001 tristate "GPIO support for Crystal Cove PMIC"
1002 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1003 select GPIOLIB_IRQCHIP
1005 Support for GPIO pins on Crystal Cove PMIC.
1007 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1010 This driver can also be built as a module. If so, the module will be
1011 called gpio-crystalcove.
1014 tristate "AMD CS5535/CS5536 GPIO support"
1015 depends on X86 || MIPS || COMPILE_TEST
1016 depends on MFD_CS5535
1018 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1019 can be used for quite a number of things. The CS5535/6 is found on
1020 AMD Geode and Lemote Yeeloong devices.
1025 tristate "Dialog DA9052 GPIO"
1026 depends on PMIC_DA9052
1028 Say yes here to enable the GPIO driver for the DA9052 chip.
1031 tristate "Dialog Semiconductor DA9055 GPIO"
1032 depends on MFD_DA9055
1034 Say yes here to enable the GPIO driver for the DA9055 chip.
1036 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1037 be controller by this driver.
1039 If driver is built as a module it will be called gpio-da9055.
1042 tristate "Diolan DLN2 GPIO support"
1044 select GPIOLIB_IRQCHIP
1047 Select this option to enable GPIO driver for the Diolan DLN2
1050 This driver can also be built as a module. If so, the module
1051 will be called gpio-dln2.
1054 bool "HTC EGPIO support"
1055 depends on GPIOLIB && ARM
1057 This driver supports the CPLD egpio chip present on
1058 several HTC phones. It provides basic support for input
1059 pins, output pins, and irqs.
1061 config GPIO_JANZ_TTL
1062 tristate "Janz VMOD-TTL Digital IO Module"
1063 depends on MFD_JANZ_CMODIO
1065 This enables support for the Janz VMOD-TTL Digital IO module.
1066 This driver provides support for driving the pins in output
1067 mode only. Input mode is not supported.
1070 tristate "Kontron ETX / COMexpress GPIO"
1071 depends on MFD_KEMPLD
1073 This enables support for the PLD GPIO interface on some Kontron ETX
1074 and COMexpress (ETXexpress) modules.
1076 This driver can also be built as a module. If so, the module will be
1080 tristate "TI/National Semiconductor LP3943 GPIO expander"
1081 depends on MFD_LP3943
1083 GPIO driver for LP3943 MFD.
1084 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1085 Open drain outputs are required for this usage.
1088 tristate "TI LP873X GPO"
1089 depends on MFD_TI_LP873X
1091 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1094 This driver can also be built as a module. If so, the module will be
1098 tristate "TI LP87565 GPIO"
1099 depends on MFD_TI_LP87565
1101 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1104 This driver can also be built as a module. If so, the module will be
1105 called gpio-lp87565.
1108 tristate "Cirrus Logic Madera class codecs"
1109 depends on PINCTRL_MADERA
1111 Support for GPIOs on Cirrus Logic Madera class codecs.
1113 config GPIO_MAX77620
1114 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1115 depends on MFD_MAX77620
1117 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1118 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1119 driver also provides interrupt support for each of the gpios.
1120 Say yes here to enable the max77620 to be used as gpio controller.
1122 config GPIO_MAX77650
1123 tristate "Maxim MAX77650/77651 GPIO support"
1124 depends on MFD_MAX77650
1126 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1127 These chips have a single pin that can be configured as GPIO.
1130 bool "Intel MSIC mixed signal gpio support"
1131 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1133 Enable support for GPIO on intel MSIC controllers found in
1137 bool "TI PALMAS series PMICs GPIO"
1138 depends on MFD_PALMAS
1140 Select this option to enable GPIO driver for the TI PALMAS
1144 bool "RICOH RC5T583 GPIO"
1145 depends on MFD_RC5T583
1147 Select this option to enable GPIO driver for the Ricoh RC5T583
1149 This driver provides the support for driving/reading the gpio pins
1150 of RC5T583 device through standard gpio library.
1154 depends on MFD_STMPE
1156 select GPIOLIB_IRQCHIP
1158 This enables support for the GPIOs found on the STMPE I/O
1162 bool "TC3589X GPIOs"
1163 depends on MFD_TC3589X
1165 select GPIOLIB_IRQCHIP
1167 This enables support for the GPIOs found on the TC3589X
1170 config GPIO_TIMBERDALE
1171 bool "Support for timberdale GPIO IP"
1172 depends on MFD_TIMBERDALE
1174 Add support for the GPIO IP in the timberdale FPGA.
1176 config GPIO_TPS65086
1177 tristate "TI TPS65086 GPO"
1178 depends on MFD_TPS65086
1180 This driver supports the GPO on TI TPS65086x PMICs.
1182 config GPIO_TPS65218
1183 tristate "TPS65218 GPIO"
1184 depends on MFD_TPS65218
1186 Select this option to enable GPIO driver for the TPS65218
1189 config GPIO_TPS6586X
1190 bool "TPS6586X GPIO"
1191 depends on MFD_TPS6586X
1193 Select this option to enable GPIO driver for the TPS6586X
1196 config GPIO_TPS65910
1197 bool "TPS65910 GPIO"
1198 depends on MFD_TPS65910
1200 Select this option to enable GPIO driver for the TPS65910
1203 config GPIO_TPS65912
1204 tristate "TI TPS65912 GPIO"
1205 depends on MFD_TPS65912
1207 This driver supports TPS65912 gpio chip
1209 config GPIO_TPS68470
1210 bool "TPS68470 GPIO"
1211 depends on MFD_TPS68470
1213 Select this option to enable GPIO driver for the TPS68470
1215 There are 7 GPIOs and few sensor related GPIOs supported
1216 by the TPS68470. While the 7 GPIOs can be configured as
1217 input or output as appropriate, the sensor related GPIOs
1218 are "output only" GPIOs.
1220 This driver config is bool, as the GPIO functionality
1221 of the TPS68470 must be available before dependent
1225 tristate "TQ-Systems QTMX86 GPIO"
1226 depends on MFD_TQMX86 || COMPILE_TEST
1227 select GPIOLIB_IRQCHIP
1229 This driver supports GPIO on the TQMX86 IO controller.
1232 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1233 depends on TWL4030_CORE
1235 Say yes here to access the GPIO signals of various multi-function
1236 power management chips from Texas Instruments.
1239 tristate "TWL6040 GPO"
1240 depends on TWL6040_CORE
1242 Say yes here to access the GPO signals of twl6040
1243 audio chip from Texas Instruments.
1246 tristate "Philips UCB1400 GPIO"
1247 depends on UCB1400_CORE
1249 This enables support for the Philips UCB1400 GPIO pins.
1250 The UCB1400 is an AC97 audio codec.
1252 config GPIO_WHISKEY_COVE
1253 tristate "GPIO support for Whiskey Cove PMIC"
1254 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1255 select GPIOLIB_IRQCHIP
1257 Support for GPIO pins on Whiskey Cove PMIC.
1259 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1262 This driver can also be built as a module. If so, the module will be
1266 tristate "WM831x GPIOs"
1267 depends on MFD_WM831X
1269 Say yes here to access the GPIO signals of WM831x power management
1270 chips from Wolfson Microelectronics.
1273 tristate "WM8350 GPIOs"
1274 depends on MFD_WM8350
1276 Say yes here to access the GPIO signals of WM8350 power management
1277 chips from Wolfson Microelectronics.
1280 tristate "WM8994 GPIOs"
1281 depends on MFD_WM8994
1283 Say yes here to access the GPIO signals of WM8994 audio hub
1284 CODECs from Wolfson Microelectronics.
1288 menu "PCI GPIO expanders"
1292 tristate "AMD 8111 GPIO driver"
1293 depends on X86 || COMPILE_TEST
1295 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1297 Note, that usually system firmware/ACPI handles GPIO pins on their
1298 own and users might easily break their systems with uncarefull usage
1304 tristate "BT8XX GPIO abuser"
1305 depends on VIDEO_BT848=n
1307 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1308 as a cheap PCI GPIO card.
1310 This chip can be found on Miro, Hauppauge and STB TV-cards.
1312 The card needs to be physically altered for using it as a
1313 GPIO card. For more information on how to build a GPIO card
1314 from a BT8xx TV card, see the documentation file at
1315 Documentation/driver-api/bt8xxgpio.rst
1319 config GPIO_INTEL_MID
1320 bool "Intel MID GPIO support"
1321 depends on X86_INTEL_MID
1322 select GPIOLIB_IRQCHIP
1324 Say Y here to support Intel MID GPIO.
1326 config GPIO_MERRIFIELD
1327 tristate "Intel Merrifield GPIO support"
1328 depends on X86_INTEL_MID
1329 select GPIOLIB_IRQCHIP
1331 Say Y here to support Intel Merrifield GPIO.
1334 tristate "Mellanox BlueField SoC GPIO"
1335 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1338 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1341 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1342 depends on X86 || COMPILE_TEST
1343 select GENERIC_IRQ_CHIP
1345 ML7213 is companion chip for Intel Atom E6xx series.
1346 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1347 Hub) which is for IVI(In-Vehicle Infotainment) use.
1348 This driver can access the IOH's GPIO device.
1351 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1352 depends on X86_32 || MIPS || COMPILE_TEST
1353 select GENERIC_IRQ_CHIP
1355 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1356 which is an IOH(Input/Output Hub) for x86 embedded processor.
1357 This driver can access PCH GPIO device.
1359 This driver also can be used for LAPIS Semiconductor IOH(Input/
1360 Output Hub), ML7223 and ML7831.
1361 ML7223 IOH is for MP(Media Phone) use.
1362 ML7831 IOH is for general purpose use.
1363 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1364 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1366 config GPIO_PCI_IDIO_16
1367 tristate "ACCES PCI-IDIO-16 GPIO support"
1368 select GPIOLIB_IRQCHIP
1370 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1371 generated when any of the inputs change state (low to high or high to
1372 low). Input filter control is not supported by this driver, and the
1373 input filters are deactivated by this driver.
1375 config GPIO_PCIE_IDIO_24
1376 tristate "ACCES PCIe-IDIO-24 GPIO support"
1377 select GPIOLIB_IRQCHIP
1379 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1380 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1381 when any of the inputs change state (low to high or high to low).
1382 Input filter control is not supported by this driver, and the input
1383 filters are deactivated by this driver.
1386 tristate "RDC R-321x GPIO support"
1390 Support for the RDC R321x SoC GPIOs over southbridge
1391 PCI configuration space.
1393 config GPIO_SODAVILLE
1394 bool "Intel Sodaville GPIO support"
1395 depends on X86 && OF
1397 select GENERIC_IRQ_CHIP
1399 Say Y here to support Intel Sodaville GPIO.
1403 menu "SPI GPIO expanders"
1404 depends on SPI_MASTER
1407 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1410 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1411 shift registers. This driver can be used to provide access
1412 to more gpio outputs.
1414 config GPIO_MAX3191X
1415 tristate "Maxim MAX3191x industrial serializer"
1418 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1419 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1420 chip to make 8 digital 24V inputs available via SPI. Supports
1421 CRC checksums to guard against electromagnetic interference,
1422 as well as undervoltage and overtemperature detection.
1425 tristate "Maxim MAX7301 GPIO expander"
1428 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1431 tristate "Freescale MC33880 high-side/low-side switch"
1433 SPI driver for Freescale MC33880 high-side/low-side switch.
1434 This provides GPIO interface supporting inputs and outputs.
1437 tristate "Generic parallel-in/serial-out shift register"
1439 GPIO driver for SPI compatible parallel-in/serial-out shift
1440 registers. These are input only devices.
1443 tristate "EXAR XRA1403 16-bit GPIO expander"
1446 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1449 tristate "Turris Mox Moxtet bus GPIO expander"
1452 Say yes here if you are building for the Turris Mox router.
1453 This is the driver needed for configuring the GPIOs via the Moxtet
1454 bus. For example the Mox module with SFP cage needs this driver
1455 so that phylink can use corresponding GPIOs.
1459 menu "USB GPIO expanders"
1462 config GPIO_VIPERBOARD
1463 tristate "Viperboard GPIO a & b support"
1464 depends on MFD_VIPERBOARD
1466 Say yes here to access the GPIO signals of Nano River
1467 Technologies Viperboard. There are two GPIO chips on the
1468 board: gpioa and gpiob.
1469 See viperboard API specification and Nano
1470 River Tech's viperboard.h for detailed meaning
1471 of the module parameters.
1476 tristate "GPIO Testing Driver"
1480 This enables GPIO Testing driver, which provides a way to test GPIO
1481 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1482 must be selected for this test.
1483 User could use it through the script in
1484 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in