1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
9 This enables GPIO support through the generic GPIO library.
10 You only need to enable this if you also want to enable
11 one or more of the GPIO drivers below.
17 config GPIOLIB_FASTPATH_LIMIT
18 int "Maximum number of GPIOs for fast path"
22 This adjusts the point at which certain APIs will switch from
23 using a stack allocated buffer to a dynamically allocated buffer.
25 You shouldn't need to change this unless you really need to
26 optimize either stack space or performance. Change this carefully
27 since setting an incorrect value could cause stack corruption.
38 config GPIOLIB_IRQCHIP
42 config OF_GPIO_MM_GPIOCHIP
45 This adds support for the legacy 'struct of_mm_gpio_chip' interface
46 from PowerPC. Existing drivers using this interface need to select
47 this symbol, but new drivers should use the generic gpio-regmap
48 infrastructure instead.
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)" if EXPERT
64 select GPIO_CDEV # We need to encourage the new ABI
66 Say Y here to add the legacy sysfs interface for GPIOs.
68 This ABI is deprecated. If you want to use GPIO from userspace,
69 use the character device /dev/gpiochipN with the appropriate
70 ioctl() operations instead.
74 prompt "Character device (/dev/gpiochipN) support" if EXPERT
77 Say Y here to add the character device /dev/gpiochipN interface
78 for GPIOs. The character device allows userspace to control GPIOs
79 using ioctl() operations.
81 Only say N if you are sure that the GPIO character device is not
87 bool "Support GPIO ABI Version 1"
91 Say Y here to support version 1 of the GPIO CDEV ABI.
93 This ABI version is deprecated.
94 Please use the latest ABI for new developments.
99 depends on HAS_IOMEM # Only for IOMEM drivers
106 # put drivers in the right section, in alphabetical order
108 # This symbol is selected by both I2C and SPI expanders
115 select GPIOLIB_IRQCHIP
118 Enables support for the idio-16 library functions. The idio-16 library
119 provides functions to facilitate communication with devices within the
120 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
122 If built as a module its name will be gpio-idio-16.
124 menu "Memory mapped GPIO drivers"
127 config GPIO_74XX_MMIO
128 tristate "GPIO driver for 74xx-ICs with MMIO access"
132 Say yes here to support GPIO functionality for 74xx-compatible ICs
133 with MMIO access. Compatible models include:
134 1 bit: 741G125 (Input), 741G74 (Output)
135 2 bits: 742G125 (Input), 7474 (Output)
136 4 bits: 74125 (Input), 74175 (Output)
137 6 bits: 74365 (Input), 74174 (Output)
138 8 bits: 74244 (Input), 74273 (Output)
139 16 bits: 741624 (Input), 7416374 (Output)
142 tristate "Altera GPIO"
144 select GPIOLIB_IRQCHIP
145 select OF_GPIO_MM_GPIOCHIP
147 Say Y or M here to build support for the Altera PIO device.
149 If driver is built as a module it will be called gpio-altera.
152 tristate "AMD Promontory GPIO support"
156 Driver for GPIO functionality on Promontory IOHub.
157 Requires ACPI ASL code to enumerate as a platform device.
160 tristate "Aspeed GPIO support"
161 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
162 select GPIOLIB_IRQCHIP
164 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
166 config GPIO_ASPEED_SGPIO
167 bool "Aspeed SGPIO support"
168 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
170 select GPIOLIB_IRQCHIP
172 Say Y here to support Aspeed AST2500 SGPIO functionality.
175 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
177 depends on ATH79 || COMPILE_TEST
179 select GPIOLIB_IRQCHIP
181 Select this option to enable GPIO driver for
182 Atheros AR71XX/AR724X/AR913X SoC devices.
184 config GPIO_RASPBERRYPI_EXP
185 tristate "Raspberry Pi 3 GPIO Expander"
186 default RASPBERRYPI_FIRMWARE
188 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
189 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
190 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
192 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
193 the firmware mailbox to communicate with VideoCore on BCM283x chips.
196 bool "Broadcom Kona GPIO"
197 depends on ARCH_BCM_MOBILE || COMPILE_TEST
199 Turn on GPIO support for Broadcom "Kona" chips.
201 config GPIO_BCM_XGS_IPROC
202 tristate "BRCM XGS iProc GPIO support"
203 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
205 select GPIOLIB_IRQCHIP
206 default ARCH_BCM_IPROC
208 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
211 tristate "BRCMSTB GPIO support"
212 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
213 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
217 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
220 tristate "Cadence GPIO support"
223 select GPIOLIB_IRQCHIP
225 Say yes here to enable support for Cadence GPIO controller.
228 tristate "CLPS711X GPIO support"
229 depends on ARCH_CLPS711X || COMPILE_TEST
232 Say yes here to support GPIO on CLPS711X SoCs.
235 tristate "TI Davinci/Keystone GPIO support"
236 default y if ARCH_DAVINCI
237 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
239 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
242 tristate "Synopsys DesignWare APB GPIO driver"
244 select GPIOLIB_IRQCHIP
246 Say Y or M here to build support for the Synopsys DesignWare APB
250 tristate "Spreadtrum EIC support"
251 depends on ARCH_SPRD || COMPILE_TEST
253 select GPIOLIB_IRQCHIP
255 Say yes here to support Spreadtrum EIC device.
258 tristate "Emma Mobile GPIO"
259 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
261 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
264 tristate "Airoha GPIO support"
265 depends on ARCH_AIROHA
268 select GPIOLIB_IRQCHIP
270 Say Y or M here to support the GPIO controller block on the
271 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
275 depends on ARCH_EP93XX
277 select GPIOLIB_IRQCHIP
280 tristate "Support for GPIO pins on XR17V352/354/358"
281 depends on SERIAL_8250_EXAR
284 Selecting this option will enable handling of GPIO pins present
285 on Exar XR17V352/354/358 chips.
288 bool "GE FPGA based GPIO"
289 depends on GE_FPGA || COMPILE_TEST
292 Support for common GPIO functionality provided on some GE Single Board
295 This driver provides basic support (configure as input or output, read
296 and write pin state) for GPIO implemented in a number of GE single
299 config GPIO_FTGPIO010
300 bool "Faraday FTGPIO010 GPIO"
303 select GPIOLIB_IRQCHIP
304 default (ARCH_GEMINI || ARCH_MOXART)
306 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
307 Cortina systems Gemini platforms, Moxa ART and others.
309 config GPIO_GENERIC_PLATFORM
310 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
313 Say yes here to support basic platform_device memory-mapped GPIO controllers.
316 tristate "Aeroflex Gaisler GRGPIO support"
321 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
322 VHDL IP core library.
325 tristate "HiSilicon GPIO controller driver"
326 depends on ARM64 || COMPILE_TEST
328 select GPIOLIB_IRQCHIP
330 Say Y or M here to build support for the HiSilicon GPIO controller
332 This GPIO controller supports double-edge interrupt and multi-core
336 tristate "Nintendo Wii (Hollywood) GPIO"
339 select GPIOLIB_IRQCHIP
341 Select this to support the GPIO controller of the Nintendo Wii.
346 tristate "Intel ICH GPIO"
350 Say yes here to support the GPIO functionality of a number of Intel
351 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
352 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
353 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
362 bool "Intel IXP4xx GPIO"
363 depends on ARCH_IXP4XX
366 select GPIOLIB_IRQCHIP
367 select IRQ_DOMAIN_HIERARCHY
369 Say yes here to support the GPIO functionality of a number of Intel
370 IXP4xx series of chips.
375 tristate "Xylon LogiCVC GPIO support"
376 depends on MFD_SYSCON && OF
378 Say yes here to support GPIO functionality of the Xylon LogiCVC
379 programmable logic block.
382 bool "Loongson-2/3 GPIO support"
383 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
385 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
387 config GPIO_LOONGSON_64BIT
388 tristate "Loongson 64 bit GPIO support"
389 depends on LOONGARCH || COMPILE_TEST
393 Say yes here to support the GPIO functionality of a number of
394 Loongson series of chips. The Loongson GPIO controller supports
395 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
396 the remaining 56 are reused with other functions, with edge or
397 level triggered interrupts.
400 tristate "NXP LPC18XX/43XX GPIO support"
401 default y if ARCH_LPC18XX
402 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
403 select IRQ_DOMAIN_HIERARCHY
405 Select this option to enable GPIO driver for
406 NXP LPC18XX/43XX devices.
409 tristate "NXP LPC32XX GPIO support"
410 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
412 Select this option to enable GPIO driver for
416 tristate "GPIO support for Fujitsu MB86S7x Platforms"
418 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
421 tristate "MEN 16Z127 GPIO support"
425 Say yes here to support the MEN 16Z127 GPIO Controller.
427 config GPIO_MM_LANTIQ
428 bool "Lantiq Memory mapped GPIOs"
429 depends on LANTIQ && SOC_XWAY
430 select OF_GPIO_MM_GPIOCHIP
432 This enables support for memory mapped GPIOs on the External Bus Unit
433 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
434 created by attaching a 16-bit latch to the bus.
438 depends on PPC_MPC52xx
439 select OF_GPIO_MM_GPIOCHIP
442 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
443 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
444 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
449 Say Y here if you're going to use hardware that connects to the
450 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
453 bool "Mediatek MT7621 GPIO Support"
454 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
457 select GPIOLIB_IRQCHIP
459 Say yes here to support the Mediatek MT7621 SoC GPIO device.
463 depends on PLAT_ORION || ARCH_MVEBU
465 select GENERIC_IRQ_CHIP
469 tristate "i.MX GPIO support"
470 depends on ARCH_MXC || COMPILE_TEST
472 select GENERIC_IRQ_CHIP
475 bool "Freescale MXS GPIO support" if COMPILE_TEST
476 depends on ARCH_MXS || COMPILE_TEST
477 default y if ARCH_MXS
479 select GENERIC_IRQ_CHIP
481 config GPIO_NPCM_SGPIO
482 bool "Nuvoton SGPIO support"
483 depends on ARCH_NPCM || COMPILE_TEST
484 select GPIOLIB_IRQCHIP
486 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
489 tristate "Cavium OCTEON GPIO"
490 depends on CAVIUM_OCTEON_SOC
493 Say yes here to support the on-chip GPIO lines on the OCTEON
497 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
498 default y if ARCH_OMAP
500 select GENERIC_IRQ_CHIP
501 select GPIOLIB_IRQCHIP
503 Say yes here to enable GPIO support for TI OMAP SoCs.
506 tristate "PrimeCell PL061 GPIO support"
509 select GPIOLIB_IRQCHIP
511 Say yes here to support the PrimeCell PL061 GPIO device.
514 bool "PXA GPIO support"
515 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
517 Say yes here to support the PXA GPIO device.
520 tristate "Renesas R-Car and RZ/G GPIO support"
521 depends on ARCH_RENESAS || COMPILE_TEST
522 select GPIOLIB_IRQCHIP
524 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
527 bool "RDA Micro GPIO controller support"
528 depends on ARCH_RDA || COMPILE_TEST
531 select GPIOLIB_IRQCHIP
533 Say Y here to support RDA Micro GPIO controller.
535 config GPIO_REALTEK_OTTO
536 tristate "Realtek Otto GPIO support"
537 depends on MACH_REALTEK_RTL
538 default MACH_REALTEK_RTL
540 select GPIOLIB_IRQCHIP
542 The GPIO controller on the Otto MIPS platform supports up to two
543 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
544 are grouped in four 8-bit wide ports.
546 When built as a module, the module will be called realtek_otto_gpio.
551 A 32-bit single register GPIO fixed in/out implementation. This
552 can be used to represent any register as a set of GPIO signals.
555 tristate "Rockchip GPIO support"
556 depends on ARCH_ROCKCHIP || COMPILE_TEST
557 select GENERIC_IRQ_CHIP
558 select GPIOLIB_IRQCHIP
559 default ARCH_ROCKCHIP
561 Say yes here to support GPIO on Rockchip SoCs.
564 tristate "Realtek DHC GPIO support"
565 depends on ARCH_REALTEK
567 select GPIOLIB_IRQCHIP
569 This option enables support for GPIOs found on Realtek DHC(Digital
570 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
571 RTD1319D, RTD1395, RTD1619 and RTD1619B.
573 Say yes here to support GPIO functionality and GPIO interrupt on
576 config GPIO_SAMA5D2_PIOBU
577 tristate "SAMA5D2 PIOBU GPIO support"
578 depends on MFD_SYSCON
580 depends on ARCH_AT91 || COMPILE_TEST
583 Say yes here to use the PIOBU pins as GPIOs.
585 PIOBU pins on the SAMA5D2 can be used as GPIOs.
586 The difference from regular GPIOs is that they
587 maintain their value during backup/self-refresh.
590 tristate "SiFive GPIO support"
592 select IRQ_DOMAIN_HIERARCHY
594 select GPIOLIB_IRQCHIP
597 Say yes here to support the GPIO device on SiFive SoCs.
600 tristate "SIOX GPIO support"
602 select GPIOLIB_IRQCHIP
604 Say yes here to support SIOX I/O devices. These are units connected
605 via a SIOX bus and have a number of fixed-direction I/O lines.
607 config GPIO_SNPS_CREG
608 bool "Synopsys GPIO via CREG (Control REGisters) driver"
609 depends on ARC || COMPILE_TEST
612 This driver supports GPIOs via CREG on various Synopsys SoCs.
613 This is a single-register MMIO GPIO driver for complex cases
614 where only several fields in register belong to GPIO lines and
615 each GPIO line owns a field with different length and on/off value.
617 config GPIO_SPEAR_SPICS
618 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
619 depends on PLAT_SPEAR
620 select GENERIC_IRQ_CHIP
622 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
625 tristate "Spreadtrum GPIO support"
626 depends on ARCH_SPRD || COMPILE_TEST
628 select GPIOLIB_IRQCHIP
630 Say yes here to support Spreadtrum GPIO device.
633 bool "XWAY STP GPIOs"
634 depends on SOC_XWAY || COMPILE_TEST
637 This enables support for the Serial To Parallel (STP) unit found on
638 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
639 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
640 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
644 tristate "GPIO based on SYSCON"
645 depends on MFD_SYSCON && OF
647 Say yes here to support GPIO functionality though SYSCON driver.
651 select GPIOLIB_IRQCHIP
653 GPIO support for Intel Tangier and compatible platforms.
658 If built as a module its name will be gpio-tangier.
663 select GENERIC_IRQ_CHIP
667 tristate "NVIDIA Tegra GPIO support"
669 depends on ARCH_TEGRA || COMPILE_TEST
671 select GPIOLIB_IRQCHIP
672 select IRQ_DOMAIN_HIERARCHY
674 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
677 tristate "NVIDIA Tegra186 GPIO support"
678 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
679 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
681 select GPIOLIB_IRQCHIP
682 select IRQ_DOMAIN_HIERARCHY
684 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
687 tristate "TS-4800 DIO blocks and compatibles"
689 depends on SOC_IMX51 || COMPILE_TEST
692 This driver support TS-4800 FPGA GPIO controllers.
695 tristate "Cavium ThunderX/OCTEON-TX GPIO"
696 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
698 select GPIOLIB_IRQCHIP
699 select IRQ_DOMAIN_HIERARCHY
700 select IRQ_FASTEOI_HIERARCHY_HANDLERS
702 Say yes here to support the on-chip GPIO lines on the ThunderX
703 and OCTEON-TX families of SoCs.
706 tristate "UniPhier GPIO support"
707 depends on ARCH_UNIPHIER || COMPILE_TEST
709 select IRQ_DOMAIN_HIERARCHY
711 Say yes here to support UniPhier GPIOs.
714 bool "VF610 GPIO support"
715 default y if SOC_VF610
717 select GPIOLIB_IRQCHIP
719 Say yes here to support i.MX or Vybrid vf610 GPIOs.
722 tristate "Toshiba Visconti GPIO support"
723 depends on ARCH_VISCONTI || COMPILE_TEST
725 select GPIOLIB_IRQCHIP
727 select IRQ_DOMAIN_HIERARCHY
729 Say yes here to support GPIO on Tohisba Visconti.
732 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
733 depends on MFD_WCD934X && OF_GPIO
735 This driver is to support GPIO block found on the Qualcomm Technologies
736 Inc WCD9340/WCD9341 Audio Codec.
739 bool "APM X-Gene GPIO controller support"
740 depends on ARM64 && OF_GPIO
742 This driver is to support the GPIO block within the APM X-Gene SoC
743 platform's generic flash controller. The GPIO pins are muxed with
744 the generic flash controller's address and data pins. Say yes
745 here to enable the GFC GPIO functionality.
748 tristate "APM X-Gene GPIO standby controller support"
749 depends on (ARCH_XGENE || COMPILE_TEST)
751 select GPIOLIB_IRQCHIP
752 select IRQ_DOMAIN_HIERARCHY
754 This driver supports the GPIO block within the APM X-Gene
755 Standby Domain. Say yes here to enable the GPIO functionality.
758 tristate "Xilinx GPIO support"
759 select GPIOLIB_IRQCHIP
762 Say yes here to support the Xilinx FPGA GPIO device.
765 tristate "Cavium ThunderX2 GPIO support"
766 depends on ARCH_THUNDER2 || COMPILE_TEST
767 select GPIOLIB_IRQCHIP
769 This driver provides support for GPIO interface on Cavium's ThunderX2
770 CN99XX SoCs (Originally from Netlogic XLP).
775 bool "Xtensa GPIO32 support"
777 depends on HAVE_XTENSA_GPIO32
780 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
781 and EXPSTATE (output) ports.
784 bool "LSI ZEVIO SoC memory mapped GPIOs"
787 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
790 tristate "Xilinx Zynq GPIO support"
791 depends on ARCH_ZYNQ || ARCH_ZYNQMP
792 select GPIOLIB_IRQCHIP
794 Say yes here to support Xilinx Zynq GPIO controller.
796 config GPIO_ZYNQMP_MODEPIN
797 tristate "ZynqMP ps-mode pin GPIO configuration driver"
798 depends on ZYNQMP_FIRMWARE
799 default ZYNQMP_FIRMWARE
801 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
804 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
805 is 4-bits boot mode pins. It sets and gets the status of
806 the ps-mode pin. Every pin can be configured as input/output.
808 config GPIO_LOONGSON1
809 tristate "Loongson1 GPIO support"
810 depends on MACH_LOONGSON32
813 Say Y or M here to support GPIO on Loongson1 SoCs.
816 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
818 This option enables driver for GPIO on AMD's Fusion Controller Hub,
819 as found on G-series SOCs (e.g. GX-412TC).
821 Note: This driver doesn't register itself automatically, as it
822 needs to be provided with platform-specific configuration.
823 (See e.g. CONFIG_PCENGINES_APU2.)
826 bool "MStar MSC313 GPIO support"
827 depends on ARCH_MSTARV7
829 select GPIOLIB_IRQCHIP
830 select IRQ_DOMAIN_HIERARCHY
832 Say Y here to support the main GPIO block on MStar/SigmaStar
836 tristate "IDT 79RC3243X GPIO support"
837 depends on MIKROTIK_RB532 || COMPILE_TEST
839 select GPIOLIB_IRQCHIP
841 Select this option to enable GPIO driver for
842 IDT 79RC3243X-based devices like Mikrotik RB532.
844 To compile this driver as a module, choose M here: the module will
845 be called gpio-idt3243x.
849 menu "Port-mapped I/O GPIO drivers"
850 depends on X86 && HAS_IOPORT # I/O space access
853 tristate "VIA VX855/VX875 GPIO"
858 Support access to the VX855/VX875 GPIO lines through the GPIO library.
860 This driver provides common support for accessing the device.
861 Additional drivers must be enabled in order to use the
862 functionality of the device.
868 Enables support for the i8255 interface library functions. The i8255
869 interface library provides functions to facilitate communication with
870 interfaces compatible with the venerable Intel 8255 Programmable
871 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
872 in the early 1970s but compatible interfaces are nowadays typically
873 found embedded in larger VLSI processing chips and FPGA components.
875 If built as a module its name will be gpio-i8255.
877 config GPIO_104_DIO_48E
878 tristate "ACCES 104-DIO-48E GPIO support"
883 select GPIOLIB_IRQCHIP
887 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
888 104-DIO-24E). The base port addresses for the devices may be
889 configured via the base module parameter. The interrupt line numbers
890 for the devices may be configured via the irq module parameter.
892 config GPIO_104_IDIO_16
893 tristate "ACCES 104-IDIO-16 GPIO support"
899 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
900 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
901 base port addresses for the devices may be configured via the base
902 module parameter. The interrupt line numbers for the devices may be
903 configured via the irq module parameter.
905 config GPIO_104_IDI_48
906 tristate "ACCES 104-IDI-48 GPIO support"
911 select GPIOLIB_IRQCHIP
914 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
915 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
916 the devices may be configured via the base module parameter. The
917 interrupt line numbers for the devices may be configured via the irq
921 tristate "Fintek and Nuvoton Super-I/O GPIO support"
923 This option enables support for GPIOs found on Fintek Super-I/O
924 chips F71869, F71869A, F71882FG, F71889F and F81866.
925 As well as Nuvoton Super-I/O chip NCT6126D.
927 To compile this driver as a module, choose M here: the module will
928 be called f7188x-gpio.
931 tristate "Diamond Systems GPIO-MM GPIO support"
937 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
939 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
940 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
941 support for these 48 channels of digital I/O.
943 The base port addresses for the devices may be configured via the base
944 array module parameter.
947 tristate "IT87xx GPIO support"
949 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
951 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
952 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
955 To compile this driver as a module, choose M here: the module will
959 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
960 depends on (X86 || COMPILE_TEST) && ACPI
962 select GPIOLIB_IRQCHIP
964 Say yes here to support GPIO interface on Intel Poulsbo SCH,
965 Intel Tunnel Creek processor, Intel Centerton processor or
966 Intel Quark X1000 SoC.
968 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
969 powered by the core power rail and are turned off during sleep
970 modes (S3 and higher). The remaining four GPIOs are powered by
971 the Intel SCH suspend power supply. These GPIOs remain
972 active during S3. The suspend-powered GPIOs can be used to wake the
973 system from the Suspend-to-RAM state.
975 The Intel Tunnel Creek processor has 5 GPIOs powered by the
976 core power rail and 9 from suspend power supply.
978 The Intel Centerton processor has a total of 30 GPIO pins.
979 Twenty-one are powered by the core power rail and 9 from the
980 suspend power supply.
982 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
983 power well and 6 from the suspend power well.
986 tristate "SMSC SCH311x SuperI/O GPIO"
988 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
989 SCH3116 "Super I/O" chipsets.
991 To compile this driver as a module, choose M here: the module will
992 be called gpio-sch311x.
995 tristate "TS-5500 DIO blocks and compatibles"
996 depends on TS5500 || COMPILE_TEST
998 This driver supports Digital I/O exposed by pin blocks found on some
999 Technologic Systems platforms. It includes, but is not limited to, 3
1000 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1004 tristate "Winbond Super I/O GPIO support"
1007 This option enables support for GPIOs found on Winbond Super I/O
1009 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1012 You will need to provide a module parameter "gpios", or a
1013 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1014 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1016 To compile this driver as a module, choose M here: the module will
1017 be called gpio-winbond.
1020 tristate "WinSystems WS16C48 GPIO support"
1024 select GPIOLIB_IRQCHIP
1027 Enables GPIO support for the WinSystems WS16C48. The base port
1028 addresses for the devices may be configured via the base module
1029 parameter. The interrupt line numbers for the devices may be
1030 configured via the irq module parameter.
1034 menu "I2C GPIO expanders"
1038 tristate "Avionic Design N-bit GPIO expander"
1040 select GPIOLIB_IRQCHIP
1042 This option enables support for N GPIOs found on Avionic Design
1043 I2C GPIO expanders. The register space will be extended by powers
1044 of two, so the controller will need to accommodate for that. For
1045 example: if a controller provides 48 pins, 6 registers will be
1046 enough to represent all pins, but the driver will assume a
1047 register layout for 64 pins (8 registers).
1050 tristate "FXL6408 I2C GPIO expander"
1054 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1056 To compile this driver as a module, choose M here: the module will
1057 be called gpio-fxl6408.
1060 tristate "DS4520 I2C GPIO expander"
1064 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1065 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1067 To compile this driver as a module, choose M here: the module will
1068 be called gpio-ds4520.
1071 tristate "Gateworks PLD GPIO Expander"
1074 Say yes here to provide access to the Gateworks I2C PLD GPIO
1075 Expander. This is used at least on the Cambria GW2358-4.
1078 tristate "Maxim MAX7300 GPIO expander"
1081 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1084 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1086 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1087 Port Expanders. Each IO port on these chips has a fixed role of
1088 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1089 Input and Output (designed by 'P'). The combinations are listed
1092 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1093 max7322 (4I4O), max7323 (4P4O)
1095 16 bits: max7324 (8I8O), max7325 (8P8O),
1096 max7326 (4I12O), max7327 (4P12O)
1098 Board setup code must specify the model to use, and the start
1099 number for these GPIOs.
1101 config GPIO_MAX732X_IRQ
1102 bool "Interrupt controller support for MAX732x"
1103 depends on GPIO_MAX732X=y
1104 select GPIOLIB_IRQCHIP
1106 Say yes here to enable the max732x to be used as an interrupt
1107 controller. It requires the driver to be built in the kernel.
1110 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1113 Say yes here to provide access to several register-oriented
1114 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1117 4 bits: pca9536, pca9537
1119 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1120 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1122 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1127 40 bits: pca9505, pca9698
1129 config GPIO_PCA953X_IRQ
1130 bool "Interrupt controller support for PCA953x"
1131 depends on GPIO_PCA953X
1132 select GPIOLIB_IRQCHIP
1134 Say yes here to enable the pca953x to be used as an interrupt
1138 tristate "PCA9570 4-Bit I2C GPO expander"
1140 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1142 To compile this driver as a module, choose M here: the module will
1143 be called gpio-pca9570.
1146 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1147 select GPIOLIB_IRQCHIP
1150 Say yes here to provide access to most "quasi-bidirectional" I2C
1151 GPIO expanders used for additional digital outputs or inputs.
1152 Most of these parts are from NXP, though TI is a second source for
1153 some of them. Compatible models include:
1155 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1156 pca9670, pca9672, pca9674, pca9674a,
1159 16 bits: pcf8575, pcf8575c, pca8575,
1160 pca9671, pca9673, pca9675
1162 Your board setup code will need to declare the expanders in
1163 use, and assign numbers to the GPIOs they expose. Those GPIOs
1164 can then be used from drivers and other kernel code, just like
1165 other GPIOs, but only accessible from task contexts.
1167 This driver provides an in-kernel interface to those GPIOs using
1168 platform-neutral GPIO calls.
1170 config GPIO_TPIC2810
1171 tristate "TPIC2810 8-Bit I2C GPO expander"
1173 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1175 To compile this driver as a module, choose M here: the module will
1176 be called gpio-tpic2810.
1179 tristate "Technologic Systems FPGA I2C GPIO"
1180 depends on SOC_IMX6 || COMPILE_TEST
1183 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1184 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1188 menu "MFD GPIO expanders"
1191 tristate "GPIO Support for ADP5520 PMIC"
1192 depends on PMIC_ADP5520
1194 This option enables support for on-chip GPIO found
1195 on Analog Devices ADP5520 PMICs.
1197 config GPIO_ALTERA_A10SR
1198 tristate "Altera Arria10 System Resource GPIO"
1199 depends on MFD_ALTERA_A10SR
1201 Driver for Arria10 Development Kit GPIO expansion which
1202 includes reads of pushbuttons and DIP switches as well
1206 tristate "Wolfson Microelectronics Arizona class devices"
1207 depends on MFD_ARIZONA
1209 Support for GPIOs on Wolfson Arizona class devices.
1212 tristate "ROHM BD71815 PMIC GPIO support"
1213 depends on MFD_ROHM_BD71828
1215 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1216 available on the ROHM PMIC.
1218 This driver can also be built as a module. If so, the module
1219 will be called gpio-bd71815.
1222 tristate "ROHM BD71828 GPIO support"
1223 depends on MFD_ROHM_BD71828
1225 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1226 available on the ROHM PMIC in total. The GPIOs are limited to
1227 outputs only and pins must be configured to GPIO outputs by
1228 OTP. Enable this only if you want to use these pins as outputs.
1230 This driver can also be built as a module. If so, the module
1231 will be called gpio-bd71828.
1233 config GPIO_BD9571MWV
1234 tristate "ROHM BD9571 GPIO support"
1235 depends on MFD_BD9571MWV
1237 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1238 available on the ROHM PMIC in total, both of which can also
1239 generate interrupts.
1241 This driver can also be built as a module. If so, the module
1242 will be called gpio-bd9571mwv.
1244 config GPIO_CRYSTAL_COVE
1245 tristate "GPIO support for Crystal Cove PMIC"
1246 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1247 select GPIOLIB_IRQCHIP
1249 Support for GPIO pins on Crystal Cove PMIC.
1251 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1254 This driver can also be built as a module. If so, the module will be
1255 called gpio-crystalcove.
1258 tristate "AMD CS5535/CS5536 GPIO support"
1259 depends on X86 || MIPS || COMPILE_TEST
1260 depends on MFD_CS5535
1262 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1263 can be used for quite a number of things. The CS5535/6 is found on
1264 AMD Geode and Lemote Yeeloong devices.
1269 tristate "Dialog DA9052 GPIO"
1270 depends on PMIC_DA9052
1272 Say yes here to enable the GPIO driver for the DA9052 chip.
1275 tristate "Dialog Semiconductor DA9055 GPIO"
1276 depends on MFD_DA9055
1278 Say yes here to enable the GPIO driver for the DA9055 chip.
1280 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1281 be controlled by this driver.
1283 If driver is built as a module it will be called gpio-da9055.
1286 tristate "Diolan DLN2 GPIO support"
1288 select GPIOLIB_IRQCHIP
1291 Select this option to enable GPIO driver for the Diolan DLN2
1294 This driver can also be built as a module. If so, the module
1295 will be called gpio-dln2.
1298 bool "HTC EGPIO support"
1301 This driver supports the CPLD egpio chip present on
1302 several HTC phones. It provides basic support for input
1303 pins, output pins, and IRQs.
1305 config GPIO_ELKHARTLAKE
1306 tristate "Intel Elkhart Lake PSE GPIO support"
1307 depends on X86 || COMPILE_TEST
1310 Select this option to enable GPIO support for Intel Elkhart Lake
1313 To compile this driver as a module, choose M here: the module will
1314 be called gpio-elkhartlake.
1316 config GPIO_JANZ_TTL
1317 tristate "Janz VMOD-TTL Digital IO Module"
1318 depends on MFD_JANZ_CMODIO
1320 This enables support for the Janz VMOD-TTL Digital IO module.
1321 This driver provides support for driving the pins in output
1322 mode only. Input mode is not supported.
1325 tristate "Kontron ETX / COMexpress GPIO"
1326 depends on MFD_KEMPLD
1328 This enables support for the PLD GPIO interface on some Kontron ETX
1329 and COMexpress (ETXexpress) modules.
1331 This driver can also be built as a module. If so, the module will be
1335 tristate "INTEL La Jolla Cove Adapter GPIO support"
1337 select GPIOLIB_IRQCHIP
1340 Select this option to enable GPIO driver for the INTEL
1341 La Jolla Cove Adapter (LJCA) board.
1343 This driver can also be built as a module. If so, the module
1344 will be called gpio-ljca.
1347 tristate "TI/National Semiconductor LP3943 GPIO expander"
1348 depends on MFD_LP3943
1350 GPIO driver for LP3943 MFD.
1351 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1352 Open drain outputs are required for this usage.
1355 tristate "TI LP873X GPO"
1356 depends on MFD_TI_LP873X
1358 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1361 This driver can also be built as a module. If so, the module will be
1365 tristate "TI LP87565 GPIO"
1366 depends on MFD_TI_LP87565
1368 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1371 This driver can also be built as a module. If so, the module will be
1372 called gpio-lp87565.
1375 tristate "Cirrus Logic Madera class codecs"
1376 depends on PINCTRL_MADERA
1378 Support for GPIOs on Cirrus Logic Madera class codecs.
1380 config GPIO_MAX77620
1381 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1382 depends on MFD_MAX77620
1383 select GPIOLIB_IRQCHIP
1385 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1386 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1387 driver also provides interrupt support for each of the GPIOs.
1388 Say yes here to enable the max77620 to be used as GPIO controller.
1390 config GPIO_MAX77650
1391 tristate "Maxim MAX77650/77651 GPIO support"
1392 depends on MFD_MAX77650
1394 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1395 These chips have a single pin that can be configured as GPIO.
1398 bool "TI PALMAS series PMICs GPIO"
1399 depends on MFD_PALMAS
1401 Select this option to enable GPIO driver for the TI PALMAS
1404 config GPIO_PMIC_EIC_SPRD
1405 tristate "Spreadtrum PMIC EIC support"
1406 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1408 select GPIOLIB_IRQCHIP
1410 Say yes here to support Spreadtrum PMIC EIC device.
1413 bool "RICOH RC5T583 GPIO"
1414 depends on MFD_RC5T583
1416 Select this option to enable GPIO driver for the Ricoh RC5T583
1418 This driver provides the support for driving/reading the GPIO pins
1419 of RC5T583 device through standard GPIO library.
1421 config GPIO_SL28CPLD
1422 tristate "Kontron sl28cpld GPIO support"
1423 depends on MFD_SL28CPLD || COMPILE_TEST
1425 select GPIOLIB_IRQCHIP
1428 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1430 This driver can also be built as a module. If so, the module will be
1431 called gpio-sl28cpld.
1435 depends on MFD_STMPE
1437 select GPIOLIB_IRQCHIP
1439 This enables support for the GPIOs found on the STMPE I/O
1443 bool "TC3589X GPIOs"
1444 depends on MFD_TC3589X
1446 select GPIOLIB_IRQCHIP
1448 This enables support for the GPIOs found on the TC3589X
1451 config GPIO_TIMBERDALE
1452 bool "Support for timberdale GPIO IP"
1453 depends on MFD_TIMBERDALE
1455 Add support for the GPIO IP in the timberdale FPGA.
1457 config GPIO_TN48M_CPLD
1458 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1459 depends on MFD_TN48M_CPLD
1462 This enables support for the GPIOs found on the Delta
1463 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1464 they are input-only or output-only type.
1466 This driver can also be built as a module. If so, the
1467 module will be called gpio-tn48m.
1469 config GPIO_TPS65086
1470 tristate "TI TPS65086 GPO"
1471 depends on MFD_TPS65086
1473 This driver supports the GPO on TI TPS65086x PMICs.
1475 config GPIO_TPS65218
1476 tristate "TPS65218 GPIO"
1477 depends on MFD_TPS65218
1479 Select this option to enable GPIO driver for the TPS65218
1482 config GPIO_TPS65219
1483 tristate "TPS65219 GPIO"
1484 depends on MFD_TPS65219
1485 default MFD_TPS65219
1487 Select this option to enable GPIO driver for the TPS65219 chip
1489 GPIO0 is statically configured as either input or output prior to
1490 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1491 is statically configured by NVM. GPIO0 can't be used as a generic
1492 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1495 This driver can also be built as a module. If so, the module will be
1496 called gpio_tps65219.
1498 config GPIO_TPS6586X
1499 bool "TPS6586X GPIO"
1500 depends on MFD_TPS6586X
1502 Select this option to enable GPIO driver for the TPS6586X
1505 config GPIO_TPS65910
1506 bool "TPS65910 GPIO"
1507 depends on MFD_TPS65910
1509 Select this option to enable GPIO driver for the TPS65910
1512 config GPIO_TPS65912
1513 tristate "TI TPS65912 GPIO"
1514 depends on MFD_TPS65912
1516 This driver supports TPS65912 GPIO chip.
1518 config GPIO_TPS68470
1519 tristate "TPS68470 GPIO"
1520 depends on INTEL_SKL_INT3472
1522 Select this option to enable GPIO driver for the TPS68470
1524 There are 7 GPIOs and few sensor-related GPIOs supported
1525 by the TPS68470. While the 7 GPIOs can be configured as
1526 input or output as appropriate, the sensor related GPIOs
1527 are "output only" GPIOs.
1530 tristate "TQ-Systems QTMX86 GPIO"
1531 depends on MFD_TQMX86 || COMPILE_TEST
1532 depends on HAS_IOPORT_MAP
1533 select GPIOLIB_IRQCHIP
1535 This driver supports GPIO on the TQMX86 IO controller.
1538 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1539 depends on TWL4030_CORE
1541 Say yes here to access the GPIO signals of various multi-function
1542 power management chips from Texas Instruments.
1545 tristate "TWL6040 GPO"
1546 depends on TWL6040_CORE
1548 Say yes here to access the GPO signals of twl6040
1549 audio chip from Texas Instruments.
1551 config GPIO_WHISKEY_COVE
1552 tristate "GPIO support for Whiskey Cove PMIC"
1553 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1554 select GPIOLIB_IRQCHIP
1556 Support for GPIO pins on Whiskey Cove PMIC.
1558 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1561 This driver can also be built as a module. If so, the module will be
1565 tristate "WM831x GPIOs"
1566 depends on MFD_WM831X
1568 Say yes here to access the GPIO signals of WM831x power management
1569 chips from Wolfson Microelectronics.
1572 tristate "WM8350 GPIOs"
1573 depends on MFD_WM8350
1575 Say yes here to access the GPIO signals of WM8350 power management
1576 chips from Wolfson Microelectronics.
1579 tristate "WM8994 GPIOs"
1580 depends on MFD_WM8994
1582 Say yes here to access the GPIO signals of WM8994 audio hub
1583 CODECs from Wolfson Microelectronics.
1587 menu "PCI GPIO expanders"
1591 tristate "AMD 8111 GPIO driver"
1592 depends on X86 || COMPILE_TEST
1593 depends on HAS_IOPORT_MAP
1595 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1597 Note that usually system firmware/ACPI handles GPIO pins on their
1598 own and users might easily break their systems with uncareful usage
1604 tristate "BT8XX GPIO abuser"
1605 depends on VIDEO_BT848=n
1607 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1608 as a cheap PCI GPIO card.
1610 This chip can be found on Miro, Hauppauge and STB TV-cards.
1612 The card needs to be physically altered for using it as a
1613 GPIO card. For more information on how to build a GPIO card
1614 from a BT8xx TV card, see the documentation file at
1615 Documentation/driver-api/gpio/bt8xxgpio.rst
1619 config GPIO_MERRIFIELD
1620 tristate "Intel Merrifield GPIO support"
1621 depends on X86_INTEL_MID
1624 Say Y here to support Intel Merrifield GPIO.
1627 tristate "Mellanox BlueField SoC GPIO"
1628 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1631 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1634 tristate "Mellanox BlueField 2 SoC GPIO"
1635 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1637 select GPIOLIB_IRQCHIP
1639 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1642 tristate "Mellanox BlueField 3 SoC GPIO"
1643 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1645 select GPIOLIB_IRQCHIP
1647 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1648 This GPIO controller supports interrupt handling and enables the
1649 manipulation of certain GPIO pins.
1650 This controller should be used in parallel with pinctrl-mlxbf3 to
1651 control the desired GPIOs.
1652 This driver can also be built as a module called mlxbf3-gpio.
1655 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1656 depends on X86 || COMPILE_TEST
1657 select GENERIC_IRQ_CHIP
1659 ML7213 is companion chip for Intel Atom E6xx series.
1660 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1661 Hub) which is for IVI (In-Vehicle Infotainment) use.
1662 This driver can access the IOH's GPIO device.
1665 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1666 depends on X86_32 || MIPS || COMPILE_TEST
1667 select GENERIC_IRQ_CHIP
1669 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1670 which is an IOH (Input/Output Hub) for x86 embedded processor.
1671 This driver can access PCH GPIO device.
1673 This driver also can be used for LAPIS Semiconductor IOH (Input/
1674 Output Hub), ML7223 and ML7831.
1675 ML7223 IOH is for MP (Media Phone) use.
1676 ML7831 IOH is for general purpose use.
1677 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1678 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1680 config GPIO_PCI_IDIO_16
1681 tristate "ACCES PCI-IDIO-16 GPIO support"
1685 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1686 generated when any of the inputs change state (low to high or high to
1687 low). Input filter control is not supported by this driver, and the
1688 input filters are deactivated by this driver.
1690 config GPIO_PCIE_IDIO_24
1691 tristate "ACCES PCIe-IDIO-24 GPIO support"
1694 select GPIOLIB_IRQCHIP
1697 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1698 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1699 when any of the inputs change state (low to high or high to low).
1700 Input filter control is not supported by this driver, and the input
1701 filters are deactivated by this driver.
1704 tristate "RDC R-321x GPIO support"
1708 Support for the RDC R321x SoC GPIOs over southbridge
1709 PCI configuration space.
1711 config GPIO_SODAVILLE
1712 bool "Intel Sodaville GPIO support"
1713 depends on X86 && OF
1715 select GENERIC_IRQ_CHIP
1717 Say Y here to support Intel Sodaville GPIO.
1721 menu "SPI GPIO expanders"
1722 depends on SPI_MASTER
1725 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1728 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1729 shift registers. This driver can be used to provide access
1730 to more GPIO outputs.
1732 config GPIO_MAX3191X
1733 tristate "Maxim MAX3191x industrial serializer"
1736 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1737 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1738 chip to make 8 digital 24V inputs available via SPI. Supports
1739 CRC checksums to guard against electromagnetic interference,
1740 as well as undervoltage and overtemperature detection.
1743 tristate "Maxim MAX7301 GPIO expander"
1746 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1749 tristate "Freescale MC33880 high-side/low-side switch"
1751 SPI driver for Freescale MC33880 high-side/low-side switch.
1752 This provides GPIO interface supporting inputs and outputs.
1755 tristate "Generic parallel-in/serial-out shift register"
1757 GPIO driver for SPI compatible parallel-in/serial-out shift
1758 registers. These are input only devices.
1761 tristate "EXAR XRA1403 16-bit GPIO expander"
1764 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1767 tristate "Turris Mox Moxtet bus GPIO expander"
1770 Say yes here if you are building for the Turris Mox router.
1771 This is the driver needed for configuring the GPIOs via the Moxtet
1772 bus. For example the Mox module with SFP cage needs this driver
1773 so that phylink can use corresponding GPIOs.
1777 menu "USB GPIO expanders"
1780 config GPIO_VIPERBOARD
1781 tristate "Viperboard GPIO a & b support"
1782 depends on MFD_VIPERBOARD
1784 Say yes here to access the GPIO signals of Nano River
1785 Technologies Viperboard. There are two GPIO chips on the
1786 board: gpioa and gpiob.
1787 See viperboard API specification and Nano
1788 River Tech's viperboard.h for detailed meaning
1789 of the module parameters.
1793 menu "Virtual GPIO drivers"
1795 config GPIO_AGGREGATOR
1796 tristate "GPIO Aggregator"
1798 Say yes here to enable the GPIO Aggregator, which provides a way to
1799 aggregate existing GPIO lines into a new virtual GPIO chip.
1800 This can serve the following purposes:
1801 - Assign permissions for a collection of GPIO lines to a user,
1802 - Export a collection of GPIO lines to a virtual machine,
1803 - Provide a generic driver for a GPIO-operated device in an
1804 industrial control context, to be operated from userspace using
1805 the GPIO chardev interface.
1808 tristate "GPIO latch driver"
1810 Say yes here to enable a driver for GPIO multiplexers based on latches
1811 connected to other GPIOs.
1814 tristate "GPIO Testing Driver (DEPRECATED)"
1817 This module is DEPRECATED. Please consider using gpio-sim instead.
1819 This enables GPIO Testing driver, which provides a way to test GPIO
1820 subsystem through sysfs (or char device) and debugfs.
1821 User could use it through the script in
1822 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1826 tristate "VirtIO GPIO support"
1828 select GPIOLIB_IRQCHIP
1830 Say Y here to enable guest support for virtio-based GPIO controllers.
1832 These virtual GPIOs can be routed to real GPIOs or attached to
1833 simulators on the host (like QEMU).
1836 tristate "GPIO Simulator Module"
1840 This enables the GPIO simulator - a configfs-based GPIO testing