1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
6 config ARCH_HAVE_CUSTOM_GPIO_H
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
46 config GPIOLIB_IRQCHIP
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
62 bool "/sys/class/gpio/... (sysfs interface)"
65 Say Y here to add the legacy sysfs interface for GPIOs.
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead. The character device is always
73 depends on HAS_IOMEM # Only for IOMEM drivers
76 # put drivers in the right section, in alphabetical order
78 # This symbol is selected by both I2C and SPI expanders
82 menu "Memory mapped GPIO drivers"
86 tristate "GPIO driver for 74xx-ICs with MMIO access"
90 Say yes here to support GPIO functionality for 74xx-compatible ICs
91 with MMIO access. Compatible models include:
92 1 bit: 741G125 (Input), 741G74 (Output)
93 2 bits: 742G125 (Input), 7474 (Output)
94 4 bits: 74125 (Input), 74175 (Output)
95 6 bits: 74365 (Input), 74174 (Output)
96 8 bits: 74244 (Input), 74273 (Output)
97 16 bits: 741624 (Input), 7416374 (Output)
100 tristate "Altera GPIO"
102 select GPIOLIB_IRQCHIP
104 Say Y or M here to build support for the Altera PIO device.
106 If driver is built as a module it will be called gpio-altera.
109 tristate "AMD Promontory GPIO support"
113 driver for GPIO functionality on Promontory IOHub
114 Require ACPI ASL code to enumerate as a platform device.
117 tristate "Aspeed GPIO support"
118 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
119 select GPIOLIB_IRQCHIP
121 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
123 config GPIO_ASPEED_SGPIO
124 bool "Aspeed SGPIO support"
125 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
127 select GPIOLIB_IRQCHIP
129 Say Y here to support Aspeed AST2500 SGPIO functionality.
132 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
134 depends on ATH79 || COMPILE_TEST
136 select GPIOLIB_IRQCHIP
138 Select this option to enable GPIO driver for
139 Atheros AR71XX/AR724X/AR913X SoC devices.
141 config GPIO_RASPBERRYPI_EXP
142 tristate "Raspberry Pi 3 GPIO Expander"
143 default RASPBERRYPI_FIRMWARE
145 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
146 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
147 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
149 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
150 the firmware mailbox to communicate with VideoCore on BCM283x chips.
153 bool "Broadcom Kona GPIO"
154 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
156 Turn on GPIO support for Broadcom "Kona" chips.
158 config GPIO_BCM_XGS_IPROC
159 tristate "BRCM XGS iProc GPIO support"
160 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
162 select GPIOLIB_IRQCHIP
163 default ARCH_BCM_IPROC
165 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
168 tristate "BRCMSTB GPIO support"
169 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
170 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
174 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
177 tristate "Cadence GPIO support"
180 select GPIOLIB_IRQCHIP
182 Say yes here to enable support for Cadence GPIO controller.
185 tristate "CLPS711X GPIO support"
186 depends on ARCH_CLPS711X || COMPILE_TEST
189 Say yes here to support GPIO on CLPS711X SoCs.
192 bool "TI Davinci/Keystone GPIO support"
193 default y if ARCH_DAVINCI
194 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
196 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
199 tristate "Synopsys DesignWare APB GPIO driver"
201 select GENERIC_IRQ_CHIP
203 Say Y or M here to build support for the Synopsys DesignWare APB
207 tristate "Spreadtrum EIC support"
208 depends on ARCH_SPRD || COMPILE_TEST
210 select GPIOLIB_IRQCHIP
212 Say yes here to support Spreadtrum EIC device.
215 tristate "Emma Mobile GPIO"
216 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
218 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
222 depends on ARCH_EP93XX
224 select GPIOLIB_IRQCHIP
227 tristate "Support for GPIO pins on XR17V352/354/358"
228 depends on SERIAL_8250_EXAR
230 Selecting this option will enable handling of GPIO pins present
231 on Exar XR17V352/354/358 chips.
234 bool "GE FPGA based GPIO"
238 Support for common GPIO functionality provided on some GE Single Board
241 This driver provides basic support (configure as input or output, read
242 and write pin state) for GPIO implemented in a number of GE single
245 config GPIO_FTGPIO010
246 bool "Faraday FTGPIO010 GPIO"
249 select GPIOLIB_IRQCHIP
250 default (ARCH_GEMINI || ARCH_MOXART)
252 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
253 Cortina systems Gemini platforms, Moxa ART and others.
255 config GPIO_GENERIC_PLATFORM
256 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
259 Say yes here to support basic platform_device memory-mapped GPIO controllers.
262 tristate "Aeroflex Gaisler GRGPIO support"
267 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
268 VHDL IP core library.
271 tristate "Nintendo Wii (Hollywood) GPIO"
274 select GPIOLIB_IRQCHIP
276 Select this to support the GPIO controller of the Nintendo Wii.
281 tristate "Intel ICH GPIO"
282 depends on PCI && X86
286 Say yes here to support the GPIO functionality of a number of Intel
287 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
288 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
289 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
294 tristate "Intel IOP GPIO"
295 depends on ARCH_IOP32X || COMPILE_TEST
298 Say yes here to support the GPIO functionality of a number of Intel
304 bool "Intel IXP4xx GPIO"
305 depends on ARM # For <asm/mach-types.h>
306 depends on ARCH_IXP4XX
308 select GPIOLIB_IRQCHIP
309 select IRQ_DOMAIN_HIERARCHY
311 Say yes here to support the GPIO functionality of a number of Intel
312 IXP4xx series of chips.
317 bool "Loongson-2/3 GPIO support"
318 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
320 driver for GPIO functionality on Loongson-2F/3A/3B processors.
323 tristate "NXP LPC18XX/43XX GPIO support"
324 default y if ARCH_LPC18XX
325 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
326 select IRQ_DOMAIN_HIERARCHY
328 Select this option to enable GPIO driver for
329 NXP LPC18XX/43XX devices.
332 tristate "NXP LPC32XX GPIO support"
333 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
335 Select this option to enable GPIO driver for
338 config GPIO_LYNXPOINT
339 tristate "Intel Lynxpoint GPIO support"
340 depends on ACPI && X86
341 select GPIOLIB_IRQCHIP
343 driver for GPIO functionality on Intel Lynxpoint PCH chipset
344 Requires ACPI device enumeration code to set up a platform device.
347 tristate "GPIO support for Fujitsu MB86S7x Platforms"
349 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
352 tristate "MEN 16Z127 GPIO support"
356 Say yes here to support the MEN 16Z127 GPIO Controller
358 config GPIO_MM_LANTIQ
359 bool "Lantiq Memory mapped GPIOs"
360 depends on LANTIQ && SOC_XWAY
362 This enables support for memory mapped GPIOs on the External Bus Unit
363 (EBU) found on Lantiq SoCs. The gpios are output only as they are
364 created by attaching a 16bit latch to the bus.
368 depends on PPC_MPC52xx
371 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
372 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
373 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
378 Say Y here if you're going to use hardware that connects to the
379 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
382 bool "Mediatek MT7621 GPIO Support"
383 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
386 select GPIOLIB_IRQCHIP
388 Say yes here to support the Mediatek MT7621 SoC GPIO device
392 depends on PLAT_ORION || ARCH_MVEBU
394 select GENERIC_IRQ_CHIP
401 select GENERIC_IRQ_CHIP
407 select GENERIC_IRQ_CHIP
410 tristate "Cavium OCTEON GPIO"
411 depends on GPIOLIB && CAVIUM_OCTEON_SOC
414 Say yes here to support the on-chip GPIO lines on the OCTEON
418 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
419 default y if ARCH_OMAP
421 select GENERIC_IRQ_CHIP
422 select GPIOLIB_IRQCHIP
424 Say yes here to enable GPIO support for TI OMAP SoCs.
427 bool "PrimeCell PL061 GPIO support"
430 select GPIOLIB_IRQCHIP
432 Say yes here to support the PrimeCell PL061 GPIO device
434 config GPIO_PMIC_EIC_SPRD
435 tristate "Spreadtrum PMIC EIC support"
436 depends on MFD_SC27XX_PMIC || COMPILE_TEST
438 select GPIOLIB_IRQCHIP
440 Say yes here to support Spreadtrum PMIC EIC device.
443 bool "PXA GPIO support"
444 depends on ARCH_PXA || ARCH_MMP
446 Say yes here to support the PXA GPIO device
449 tristate "Renesas R-Car GPIO"
450 depends on ARCH_RENESAS || COMPILE_TEST
451 select GPIOLIB_IRQCHIP
453 Say yes here to support GPIO on Renesas R-Car SoCs.
456 bool "RDA Micro GPIO controller support"
457 depends on ARCH_RDA || COMPILE_TEST
460 select GPIOLIB_IRQCHIP
462 Say Y here to support RDA Micro GPIO controller.
467 A 32-bit single register GPIO fixed in/out implementation. This
468 can be used to represent any register as a set of GPIO signals.
470 config GPIO_SAMA5D2_PIOBU
471 tristate "SAMA5D2 PIOBU GPIO support"
472 depends on MFD_SYSCON
476 Say yes here to use the PIOBU pins as GPIOs.
478 PIOBU pins on the SAMA5D2 can be used as GPIOs.
479 The difference from regular GPIOs is that they
480 maintain their value during backup/self-refresh.
483 bool "SiFive GPIO support"
484 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
486 select GPIOLIB_IRQCHIP
489 Say yes here to support the GPIO device on SiFive SoCs.
492 tristate "SIOX GPIO support"
494 select GPIOLIB_IRQCHIP
496 Say yes here to support SIOX I/O devices. These are units connected
497 via a SIOX bus and have a number of fixed-direction I/O lines.
499 config GPIO_SNPS_CREG
500 bool "Synopsys GPIO via CREG (Control REGisters) driver"
501 depends on ARC || COMPILE_TEST
504 This driver supports GPIOs via CREG on various Synopsys SoCs.
505 This is a single-register MMIO GPIO driver for complex cases
506 where only several fields in register belong to GPIO lines and
507 each GPIO line owns a field with different length and on/off value.
509 config GPIO_SPEAR_SPICS
510 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
511 depends on PLAT_SPEAR
512 select GENERIC_IRQ_CHIP
514 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
517 tristate "Spreadtrum GPIO support"
518 depends on ARCH_SPRD || COMPILE_TEST
520 select GPIOLIB_IRQCHIP
522 Say yes here to support Spreadtrum GPIO device.
525 bool "STA2x11/ConneXt GPIO support"
526 depends on MFD_STA2X11
527 select GENERIC_IRQ_CHIP
529 Say yes here to support the STA2x11/ConneXt GPIO device.
530 The GPIO module has 128 GPIO pins with alternate functions.
533 bool "XWAY STP GPIOs"
534 depends on SOC_XWAY || COMPILE_TEST
537 This enables support for the Serial To Parallel (STP) unit found on
538 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
539 that can be up to 24 bit. This peripheral is aimed at driving leds.
540 Some of the gpios/leds can be auto updated by the soc with dsl and
544 tristate "GPIO based on SYSCON"
545 depends on MFD_SYSCON && OF
547 Say yes here to support GPIO functionality though SYSCON driver.
552 select GENERIC_IRQ_CHIP
556 bool "NVIDIA Tegra GPIO support"
558 depends on ARCH_TEGRA || COMPILE_TEST
561 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
564 tristate "NVIDIA Tegra186 GPIO support"
565 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
566 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
568 select GPIOLIB_IRQCHIP
569 select IRQ_DOMAIN_HIERARCHY
571 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
574 tristate "TS-4800 DIO blocks and compatibles"
576 depends on SOC_IMX51 || COMPILE_TEST
579 This driver support TS-4800 FPGA GPIO controllers.
582 tristate "Cavium ThunderX/OCTEON-TX GPIO"
583 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
585 select IRQ_DOMAIN_HIERARCHY
586 select IRQ_FASTEOI_HIERARCHY_HANDLERS
588 Say yes here to support the on-chip GPIO lines on the ThunderX
589 and OCTEON-TX families of SoCs.
592 tristate "UniPhier GPIO support"
593 depends on ARCH_UNIPHIER || COMPILE_TEST
595 select IRQ_DOMAIN_HIERARCHY
597 Say yes here to support UniPhier GPIOs.
601 depends on ARCH_MXC && SOC_VF610
602 select GPIOLIB_IRQCHIP
604 Say yes here to support Vybrid vf610 GPIOs.
607 tristate "NEC VR4100 series General-purpose I/O Uint support"
608 depends on CPU_VR41XX
610 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
613 tristate "VIA VX855/VX875 GPIO"
614 depends on (X86 || COMPILE_TEST) && PCI
618 Support access to the VX855/VX875 GPIO lines through the gpio library.
620 This driver provides common support for accessing the device,
621 additional drivers must be enabled in order to use the
622 functionality of the device.
625 bool "APM X-Gene GPIO controller support"
626 depends on ARM64 && OF_GPIO
628 This driver is to support the GPIO block within the APM X-Gene SoC
629 platform's generic flash controller. The GPIO pins are muxed with
630 the generic flash controller's address and data pins. Say yes
631 here to enable the GFC GPIO functionality.
634 tristate "APM X-Gene GPIO standby controller support"
635 depends on ARCH_XGENE && OF_GPIO
637 select GPIOLIB_IRQCHIP
638 select IRQ_DOMAIN_HIERARCHY
640 This driver supports the GPIO block within the APM X-Gene
641 Standby Domain. Say yes here to enable the GPIO functionality.
644 tristate "Xilinx GPIO support"
646 Say yes here to support the Xilinx FPGA GPIO device
649 tristate "Netlogic XLP GPIO support"
650 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
651 select GPIOLIB_IRQCHIP
653 This driver provides support for GPIO interface on Netlogic XLP MIPS64
654 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
655 XLP9XX and XLP5XX. The same GPIO controller block is also present in
656 Cavium's ThunderX2 CN99XX SoCs.
661 bool "Xtensa GPIO32 support"
663 depends on HAVE_XTENSA_GPIO32
666 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
667 and EXPSTATE (output) ports
670 bool "LSI ZEVIO SoC memory mapped GPIOs"
671 depends on ARM && OF_GPIO
673 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
676 tristate "Xilinx Zynq GPIO support"
677 depends on ARCH_ZYNQ || ARCH_ZYNQMP
678 select GPIOLIB_IRQCHIP
680 Say yes here to support Xilinx Zynq GPIO controller.
683 bool "ZTE ZX GPIO support"
684 depends on ARCH_ZX || COMPILE_TEST
685 select GPIOLIB_IRQCHIP
687 Say yes here to support the GPIO device on ZTE ZX SoCs.
689 config GPIO_LOONGSON1
690 tristate "Loongson1 GPIO support"
691 depends on MACH_LOONGSON32
694 Say Y or M here to support GPIO on Loongson1 SoCs.
697 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
699 This option enables driver for GPIO on AMDs Fusion Controller Hub,
700 as found on G-series SOCs (eg. GX-412TC)
702 Note: This driver doesn't registers itself automatically, as it
703 needs to be provided with platform specific configuration.
704 (See eg. CONFIG_PCENGINES_APU2.)
707 menu "Port-mapped I/O GPIO drivers"
708 depends on X86 # Unconditional I/O space access
710 config GPIO_104_DIO_48E
711 tristate "ACCES 104-DIO-48E GPIO support"
714 select GPIOLIB_IRQCHIP
716 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
717 104-DIO-24E). The base port addresses for the devices may be
718 configured via the base module parameter. The interrupt line numbers
719 for the devices may be configured via the irq module parameter.
721 config GPIO_104_IDIO_16
722 tristate "ACCES 104-IDIO-16 GPIO support"
725 select GPIOLIB_IRQCHIP
727 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
728 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
729 base port addresses for the devices may be configured via the base
730 module parameter. The interrupt line numbers for the devices may be
731 configured via the irq module parameter.
733 config GPIO_104_IDI_48
734 tristate "ACCES 104-IDI-48 GPIO support"
737 select GPIOLIB_IRQCHIP
739 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
740 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
741 the devices may be configured via the base module parameter. The
742 interrupt line numbers for the devices may be configured via the irq
746 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
748 This option enables support for GPIOs found on Fintek Super-I/O
749 chips F71869, F71869A, F71882FG, F71889F and F81866.
751 To compile this driver as a module, choose M here: the module will
752 be called f7188x-gpio.
755 tristate "Diamond Systems GPIO-MM GPIO support"
759 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
761 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
762 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
763 support for these 48 channels of digital I/O.
765 The base port addresses for the devices may be configured via the base
766 array module parameter.
769 tristate "IT87xx GPIO support"
771 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
773 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
774 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
777 To compile this driver as a module, choose M here: the module will
781 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
782 depends on (X86 || COMPILE_TEST) && PCI
786 Say yes here to support GPIO interface on Intel Poulsbo SCH,
787 Intel Tunnel Creek processor, Intel Centerton processor or
788 Intel Quark X1000 SoC.
790 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
791 powered by the core power rail and are turned off during sleep
792 modes (S3 and higher). The remaining four GPIOs are powered by
793 the Intel SCH suspend power supply. These GPIOs remain
794 active during S3. The suspend powered GPIOs can be used to wake the
795 system from the Suspend-to-RAM state.
797 The Intel Tunnel Creek processor has 5 GPIOs powered by the
798 core power rail and 9 from suspend power supply.
800 The Intel Centerton processor has a total of 30 GPIO pins.
801 Twenty-one are powered by the core power rail and 9 from the
802 suspend power supply.
804 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
805 power well and 6 from the suspend power well.
808 tristate "SMSC SCH311x SuperI/O GPIO"
810 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
811 SCH3116 "Super I/O" chipsets.
813 To compile this driver as a module, choose M here: the module will
814 be called gpio-sch311x.
817 tristate "TS-5500 DIO blocks and compatibles"
818 depends on TS5500 || COMPILE_TEST
820 This driver supports Digital I/O exposed by pin blocks found on some
821 Technologic Systems platforms. It includes, but is not limited to, 3
822 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
826 tristate "Winbond Super I/O GPIO support"
829 This option enables support for GPIOs found on Winbond Super I/O
831 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
834 You will need to provide a module parameter "gpios", or a
835 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
836 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
838 To compile this driver as a module, choose M here: the module will
839 be called gpio-winbond.
842 tristate "WinSystems WS16C48 GPIO support"
844 select GPIOLIB_IRQCHIP
846 Enables GPIO support for the WinSystems WS16C48. The base port
847 addresses for the devices may be configured via the base module
848 parameter. The interrupt line numbers for the devices may be
849 configured via the irq module parameter.
853 menu "I2C GPIO expanders"
857 tristate "ADP5588 I2C GPIO expander"
859 This option enables support for 18 GPIOs found
860 on Analog Devices ADP5588 GPIO Expanders.
862 config GPIO_ADP5588_IRQ
863 bool "Interrupt controller support for ADP5588"
864 depends on GPIO_ADP5588=y
865 select GPIOLIB_IRQCHIP
867 Say yes here to enable the adp5588 to be used as an interrupt
868 controller. It requires the driver to be built in the kernel.
871 tristate "Avionic Design N-bit GPIO expander"
873 select GPIOLIB_IRQCHIP
875 This option enables support for N GPIOs found on Avionic Design
876 I2C GPIO expanders. The register space will be extended by powers
877 of two, so the controller will need to accommodate for that. For
878 example: if a controller provides 48 pins, 6 registers will be
879 enough to represent all pins, but the driver will assume a
880 register layout for 64 pins (8 registers).
883 tristate "Gateworks PLD GPIO Expander"
886 Say yes here to provide access to the Gateworks I2C PLD GPIO
887 Expander. This is used at least on the Cambria GW2358-4.
890 tristate "Maxim MAX7300 GPIO expander"
893 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
896 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
898 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
899 Port Expanders. Each IO port on these chips has a fixed role of
900 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
901 Input and Output (designed by 'P'). The combinations are listed
904 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
905 max7322 (4I4O), max7323 (4P4O)
907 16 bits: max7324 (8I8O), max7325 (8P8O),
908 max7326 (4I12O), max7327 (4P12O)
910 Board setup code must specify the model to use, and the start
911 number for these GPIOs.
913 config GPIO_MAX732X_IRQ
914 bool "Interrupt controller support for MAX732x"
915 depends on GPIO_MAX732X=y
916 select GPIOLIB_IRQCHIP
918 Say yes here to enable the max732x to be used as an interrupt
919 controller. It requires the driver to be built in the kernel.
921 config GPIO_MC9S08DZ60
922 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
923 depends on I2C=y && MACH_MX35_3DS
925 Select this to enable the MC9S08DZ60 GPIO driver
928 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
931 Say yes here to provide access to several register-oriented
932 SMBus I/O expanders, made mostly by NXP or TI. Compatible
935 4 bits: pca9536, pca9537
937 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
938 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
940 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
945 40 bits: pca9505, pca9698
947 config GPIO_PCA953X_IRQ
948 bool "Interrupt controller support for PCA953x"
949 depends on GPIO_PCA953X=y
950 select GPIOLIB_IRQCHIP
952 Say yes here to enable the pca953x to be used as an interrupt
953 controller. It requires the driver to be built in the kernel.
956 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
957 select GPIOLIB_IRQCHIP
960 Say yes here to provide access to most "quasi-bidirectional" I2C
961 GPIO expanders used for additional digital outputs or inputs.
962 Most of these parts are from NXP, though TI is a second source for
963 some of them. Compatible models include:
965 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
966 pca9670, pca9672, pca9674, pca9674a,
969 16 bits: pcf8575, pcf8575c, pca8575,
970 pca9671, pca9673, pca9675
972 Your board setup code will need to declare the expanders in
973 use, and assign numbers to the GPIOs they expose. Those GPIOs
974 can then be used from drivers and other kernel code, just like
975 other GPIOs, but only accessible from task contexts.
977 This driver provides an in-kernel interface to those GPIOs using
978 platform-neutral GPIO calls.
981 tristate "TPIC2810 8-Bit I2C GPO expander"
983 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
985 To compile this driver as a module, choose M here: the module will
986 be called gpio-tpic2810.
989 tristate "Technologic Systems FPGA I2C GPIO"
990 depends on SOC_IMX6 || COMPILE_TEST
993 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
994 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
998 menu "MFD GPIO expanders"
1001 tristate "GPIO Support for ADP5520 PMIC"
1002 depends on PMIC_ADP5520
1004 This option enables support for on-chip GPIO found
1005 on Analog Devices ADP5520 PMICs.
1007 config GPIO_ALTERA_A10SR
1008 tristate "Altera Arria10 System Resource GPIO"
1009 depends on MFD_ALTERA_A10SR
1011 Driver for Arria10 Development Kit GPIO expansion which
1012 includes reads of pushbuttons and DIP switches as well
1016 tristate "Wolfson Microelectronics Arizona class devices"
1017 depends on MFD_ARIZONA
1019 Support for GPIOs on Wolfson Arizona class devices.
1022 tristate "ROHM BD70528 GPIO support"
1023 depends on MFD_ROHM_BD70528
1025 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1026 available on the ROHM PMIC in total. The GPIOs can also
1027 generate interrupts.
1029 This driver can also be built as a module. If so, the module
1030 will be called gpio-bd70528.
1032 config GPIO_BD9571MWV
1033 tristate "ROHM BD9571 GPIO support"
1034 depends on MFD_BD9571MWV
1036 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1037 available on the ROHM PMIC in total, both of which can also
1038 generate interrupts.
1040 This driver can also be built as a module. If so, the module
1041 will be called gpio-bd9571mwv.
1043 config GPIO_CRYSTAL_COVE
1044 tristate "GPIO support for Crystal Cove PMIC"
1045 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1046 select GPIOLIB_IRQCHIP
1048 Support for GPIO pins on Crystal Cove PMIC.
1050 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1053 This driver can also be built as a module. If so, the module will be
1054 called gpio-crystalcove.
1057 tristate "AMD CS5535/CS5536 GPIO support"
1058 depends on X86 || MIPS || COMPILE_TEST
1059 depends on MFD_CS5535
1061 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1062 can be used for quite a number of things. The CS5535/6 is found on
1063 AMD Geode and Lemote Yeeloong devices.
1068 tristate "Dialog DA9052 GPIO"
1069 depends on PMIC_DA9052
1071 Say yes here to enable the GPIO driver for the DA9052 chip.
1074 tristate "Dialog Semiconductor DA9055 GPIO"
1075 depends on MFD_DA9055
1077 Say yes here to enable the GPIO driver for the DA9055 chip.
1079 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1080 be controller by this driver.
1082 If driver is built as a module it will be called gpio-da9055.
1085 tristate "Diolan DLN2 GPIO support"
1087 select GPIOLIB_IRQCHIP
1090 Select this option to enable GPIO driver for the Diolan DLN2
1093 This driver can also be built as a module. If so, the module
1094 will be called gpio-dln2.
1097 bool "HTC EGPIO support"
1098 depends on GPIOLIB && ARM
1100 This driver supports the CPLD egpio chip present on
1101 several HTC phones. It provides basic support for input
1102 pins, output pins, and irqs.
1104 config GPIO_JANZ_TTL
1105 tristate "Janz VMOD-TTL Digital IO Module"
1106 depends on MFD_JANZ_CMODIO
1108 This enables support for the Janz VMOD-TTL Digital IO module.
1109 This driver provides support for driving the pins in output
1110 mode only. Input mode is not supported.
1113 tristate "Kontron ETX / COMexpress GPIO"
1114 depends on MFD_KEMPLD
1116 This enables support for the PLD GPIO interface on some Kontron ETX
1117 and COMexpress (ETXexpress) modules.
1119 This driver can also be built as a module. If so, the module will be
1123 tristate "TI/National Semiconductor LP3943 GPIO expander"
1124 depends on MFD_LP3943
1126 GPIO driver for LP3943 MFD.
1127 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1128 Open drain outputs are required for this usage.
1131 tristate "TI LP873X GPO"
1132 depends on MFD_TI_LP873X
1134 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1137 This driver can also be built as a module. If so, the module will be
1141 tristate "TI LP87565 GPIO"
1142 depends on MFD_TI_LP87565
1144 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1147 This driver can also be built as a module. If so, the module will be
1148 called gpio-lp87565.
1151 tristate "Cirrus Logic Madera class codecs"
1152 depends on PINCTRL_MADERA
1154 Support for GPIOs on Cirrus Logic Madera class codecs.
1156 config GPIO_MAX77620
1157 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1158 depends on MFD_MAX77620
1159 select GPIOLIB_IRQCHIP
1161 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1162 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1163 driver also provides interrupt support for each of the gpios.
1164 Say yes here to enable the max77620 to be used as gpio controller.
1166 config GPIO_MAX77650
1167 tristate "Maxim MAX77650/77651 GPIO support"
1168 depends on MFD_MAX77650
1170 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1171 These chips have a single pin that can be configured as GPIO.
1174 bool "Intel MSIC mixed signal gpio support"
1175 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1177 Enable support for GPIO on intel MSIC controllers found in
1181 bool "TI PALMAS series PMICs GPIO"
1182 depends on MFD_PALMAS
1184 Select this option to enable GPIO driver for the TI PALMAS
1188 bool "RICOH RC5T583 GPIO"
1189 depends on MFD_RC5T583
1191 Select this option to enable GPIO driver for the Ricoh RC5T583
1193 This driver provides the support for driving/reading the gpio pins
1194 of RC5T583 device through standard gpio library.
1198 depends on MFD_STMPE
1200 select GPIOLIB_IRQCHIP
1202 This enables support for the GPIOs found on the STMPE I/O
1206 bool "TC3589X GPIOs"
1207 depends on MFD_TC3589X
1209 select GPIOLIB_IRQCHIP
1211 This enables support for the GPIOs found on the TC3589X
1214 config GPIO_TIMBERDALE
1215 bool "Support for timberdale GPIO IP"
1216 depends on MFD_TIMBERDALE
1218 Add support for the GPIO IP in the timberdale FPGA.
1220 config GPIO_TPS65086
1221 tristate "TI TPS65086 GPO"
1222 depends on MFD_TPS65086
1224 This driver supports the GPO on TI TPS65086x PMICs.
1226 config GPIO_TPS65218
1227 tristate "TPS65218 GPIO"
1228 depends on MFD_TPS65218
1230 Select this option to enable GPIO driver for the TPS65218
1233 config GPIO_TPS6586X
1234 bool "TPS6586X GPIO"
1235 depends on MFD_TPS6586X
1237 Select this option to enable GPIO driver for the TPS6586X
1240 config GPIO_TPS65910
1241 bool "TPS65910 GPIO"
1242 depends on MFD_TPS65910
1244 Select this option to enable GPIO driver for the TPS65910
1247 config GPIO_TPS65912
1248 tristate "TI TPS65912 GPIO"
1249 depends on MFD_TPS65912
1251 This driver supports TPS65912 gpio chip
1253 config GPIO_TPS68470
1254 bool "TPS68470 GPIO"
1255 depends on MFD_TPS68470
1257 Select this option to enable GPIO driver for the TPS68470
1259 There are 7 GPIOs and few sensor related GPIOs supported
1260 by the TPS68470. While the 7 GPIOs can be configured as
1261 input or output as appropriate, the sensor related GPIOs
1262 are "output only" GPIOs.
1264 This driver config is bool, as the GPIO functionality
1265 of the TPS68470 must be available before dependent
1269 tristate "TQ-Systems QTMX86 GPIO"
1270 depends on MFD_TQMX86 || COMPILE_TEST
1271 select GPIOLIB_IRQCHIP
1273 This driver supports GPIO on the TQMX86 IO controller.
1276 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1277 depends on TWL4030_CORE
1279 Say yes here to access the GPIO signals of various multi-function
1280 power management chips from Texas Instruments.
1283 tristate "TWL6040 GPO"
1284 depends on TWL6040_CORE
1286 Say yes here to access the GPO signals of twl6040
1287 audio chip from Texas Instruments.
1290 tristate "Philips UCB1400 GPIO"
1291 depends on UCB1400_CORE
1293 This enables support for the Philips UCB1400 GPIO pins.
1294 The UCB1400 is an AC97 audio codec.
1296 config GPIO_WHISKEY_COVE
1297 tristate "GPIO support for Whiskey Cove PMIC"
1298 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1299 select GPIOLIB_IRQCHIP
1301 Support for GPIO pins on Whiskey Cove PMIC.
1303 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1306 This driver can also be built as a module. If so, the module will be
1310 tristate "WM831x GPIOs"
1311 depends on MFD_WM831X
1313 Say yes here to access the GPIO signals of WM831x power management
1314 chips from Wolfson Microelectronics.
1317 tristate "WM8350 GPIOs"
1318 depends on MFD_WM8350
1320 Say yes here to access the GPIO signals of WM8350 power management
1321 chips from Wolfson Microelectronics.
1324 tristate "WM8994 GPIOs"
1325 depends on MFD_WM8994
1327 Say yes here to access the GPIO signals of WM8994 audio hub
1328 CODECs from Wolfson Microelectronics.
1332 menu "PCI GPIO expanders"
1336 tristate "AMD 8111 GPIO driver"
1337 depends on X86 || COMPILE_TEST
1339 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1341 Note, that usually system firmware/ACPI handles GPIO pins on their
1342 own and users might easily break their systems with uncarefull usage
1348 tristate "BT8XX GPIO abuser"
1349 depends on VIDEO_BT848=n
1351 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1352 as a cheap PCI GPIO card.
1354 This chip can be found on Miro, Hauppauge and STB TV-cards.
1356 The card needs to be physically altered for using it as a
1357 GPIO card. For more information on how to build a GPIO card
1358 from a BT8xx TV card, see the documentation file at
1359 Documentation/driver-api/gpio/bt8xxgpio.rst
1363 config GPIO_INTEL_MID
1364 bool "Intel MID GPIO support"
1365 depends on X86_INTEL_MID
1366 select GPIOLIB_IRQCHIP
1368 Say Y here to support Intel MID GPIO.
1370 config GPIO_MERRIFIELD
1371 tristate "Intel Merrifield GPIO support"
1372 depends on X86_INTEL_MID
1373 select GPIOLIB_IRQCHIP
1375 Say Y here to support Intel Merrifield GPIO.
1378 tristate "Mellanox BlueField SoC GPIO"
1379 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1382 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1385 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1386 depends on X86 || COMPILE_TEST
1387 select GENERIC_IRQ_CHIP
1389 ML7213 is companion chip for Intel Atom E6xx series.
1390 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1391 Hub) which is for IVI(In-Vehicle Infotainment) use.
1392 This driver can access the IOH's GPIO device.
1395 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1396 depends on X86_32 || MIPS || COMPILE_TEST
1397 select GENERIC_IRQ_CHIP
1399 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1400 which is an IOH(Input/Output Hub) for x86 embedded processor.
1401 This driver can access PCH GPIO device.
1403 This driver also can be used for LAPIS Semiconductor IOH(Input/
1404 Output Hub), ML7223 and ML7831.
1405 ML7223 IOH is for MP(Media Phone) use.
1406 ML7831 IOH is for general purpose use.
1407 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1408 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1410 config GPIO_PCI_IDIO_16
1411 tristate "ACCES PCI-IDIO-16 GPIO support"
1412 select GPIOLIB_IRQCHIP
1414 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1415 generated when any of the inputs change state (low to high or high to
1416 low). Input filter control is not supported by this driver, and the
1417 input filters are deactivated by this driver.
1419 config GPIO_PCIE_IDIO_24
1420 tristate "ACCES PCIe-IDIO-24 GPIO support"
1421 select GPIOLIB_IRQCHIP
1423 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1424 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1425 when any of the inputs change state (low to high or high to low).
1426 Input filter control is not supported by this driver, and the input
1427 filters are deactivated by this driver.
1430 tristate "RDC R-321x GPIO support"
1434 Support for the RDC R321x SoC GPIOs over southbridge
1435 PCI configuration space.
1437 config GPIO_SODAVILLE
1438 bool "Intel Sodaville GPIO support"
1439 depends on X86 && OF
1441 select GENERIC_IRQ_CHIP
1443 Say Y here to support Intel Sodaville GPIO.
1447 menu "SPI GPIO expanders"
1448 depends on SPI_MASTER
1451 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1454 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1455 shift registers. This driver can be used to provide access
1456 to more gpio outputs.
1458 config GPIO_MAX3191X
1459 tristate "Maxim MAX3191x industrial serializer"
1462 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1463 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1464 chip to make 8 digital 24V inputs available via SPI. Supports
1465 CRC checksums to guard against electromagnetic interference,
1466 as well as undervoltage and overtemperature detection.
1469 tristate "Maxim MAX7301 GPIO expander"
1472 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1475 tristate "Freescale MC33880 high-side/low-side switch"
1477 SPI driver for Freescale MC33880 high-side/low-side switch.
1478 This provides GPIO interface supporting inputs and outputs.
1481 tristate "Generic parallel-in/serial-out shift register"
1483 GPIO driver for SPI compatible parallel-in/serial-out shift
1484 registers. These are input only devices.
1487 tristate "EXAR XRA1403 16-bit GPIO expander"
1490 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1493 tristate "Turris Mox Moxtet bus GPIO expander"
1496 Say yes here if you are building for the Turris Mox router.
1497 This is the driver needed for configuring the GPIOs via the Moxtet
1498 bus. For example the Mox module with SFP cage needs this driver
1499 so that phylink can use corresponding GPIOs.
1503 menu "USB GPIO expanders"
1506 config GPIO_VIPERBOARD
1507 tristate "Viperboard GPIO a & b support"
1508 depends on MFD_VIPERBOARD
1510 Say yes here to access the GPIO signals of Nano River
1511 Technologies Viperboard. There are two GPIO chips on the
1512 board: gpioa and gpiob.
1513 See viperboard API specification and Nano
1514 River Tech's viperboard.h for detailed meaning
1515 of the module parameters.
1520 tristate "GPIO Testing Driver"
1523 This enables GPIO Testing driver, which provides a way to test GPIO
1524 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1525 must be selected for this test.
1526 User could use it through the script in
1527 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in