2 # GPIO infrastructure and drivers
5 config ARCH_HAVE_CUSTOM_GPIO_H
8 Selecting this config option from the architecture Kconfig allows
9 the architecture to provide a custom asm/gpio.h implementation
10 overriding the default implementations. New uses of this are
16 This enables GPIO support through the generic GPIO library.
17 You only need to enable this, if you also want to enable
18 one or more of the GPIO drivers below.
24 config GPIOLIB_FASTPATH_LIMIT
25 int "Maximum number of GPIOs for fast path"
29 This adjusts the point at which certain APIs will switch from
30 using a stack allocated buffer to a dynamically allocated buffer.
32 You shouldn't need to change this unless you really need to
33 optimize either stack space or performance. Change this carefully
34 since setting an incorrect value could cause stack corruption.
45 config GPIOLIB_IRQCHIP
50 bool "Debug GPIO calls"
51 depends on DEBUG_KERNEL
53 Say Y here to add some extra checks and diagnostics to GPIO calls.
54 These checks help ensure that GPIOs have been properly initialized
55 before they are used, and that sleeping calls are not made from
56 non-sleeping contexts. They can make bitbanged serial protocols
57 slower. The diagnostics help catch the type of setup errors
58 that are most common when setting up new platforms or boards.
61 bool "/sys/class/gpio/... (sysfs interface)"
64 Say Y here to add a sysfs interface for GPIOs.
66 This is mostly useful to work around omissions in a system's
67 kernel support. Those are common in custom and semicustom
68 hardware assembled using standard kernels with a minimum of
69 custom patches. In those cases, userspace code may import
70 a given GPIO from the kernel, if no kernel driver requested it.
72 Kernel drivers may also request that a particular GPIO be
73 exported to userspace; this can be useful when debugging.
76 depends on HAS_IOMEM # Only for IOMEM drivers
79 # put drivers in the right section, in alphabetical order
81 # This symbol is selected by both I2C and SPI expanders
85 menu "Memory mapped GPIO drivers"
89 tristate "GPIO driver for 74xx-ICs with MMIO access"
93 Say yes here to support GPIO functionality for 74xx-compatible ICs
94 with MMIO access. Compatible models include:
95 1 bit: 741G125 (Input), 741G74 (Output)
96 2 bits: 742G125 (Input), 7474 (Output)
97 4 bits: 74125 (Input), 74175 (Output)
98 6 bits: 74365 (Input), 74174 (Output)
99 8 bits: 74244 (Input), 74273 (Output)
100 16 bits: 741624 (Input), 7416374 (Output)
103 tristate "Altera GPIO"
105 select GPIOLIB_IRQCHIP
107 Say Y or M here to build support for the Altera PIO device.
109 If driver is built as a module it will be called gpio-altera.
112 tristate "AMD Promontory GPIO support"
116 driver for GPIO functionality on Promontory IOHub
117 Require ACPI ASL code to enumerate as a platform device.
120 tristate "Aspeed GPIO support"
121 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
122 select GPIOLIB_IRQCHIP
124 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
127 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
129 depends on ATH79 || COMPILE_TEST
131 select GPIOLIB_IRQCHIP
133 Select this option to enable GPIO driver for
134 Atheros AR71XX/AR724X/AR913X SoC devices.
136 config GPIO_RASPBERRYPI_EXP
137 tristate "Raspberry Pi 3 GPIO Expander"
138 default RASPBERRYPI_FIRMWARE
140 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
141 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
142 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
144 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
145 the firmware mailbox to communicate with VideoCore on BCM283x chips.
148 bool "Broadcom Kona GPIO"
149 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
151 Turn on GPIO support for Broadcom "Kona" chips.
154 tristate "BRCMSTB GPIO support"
155 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
156 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
160 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
163 tristate "Cadence GPIO support"
166 select GPIOLIB_IRQCHIP
168 Say yes here to enable support for Cadence GPIO controller.
171 tristate "CLPS711X GPIO support"
172 depends on ARCH_CLPS711X || COMPILE_TEST
175 Say yes here to support GPIO on CLPS711X SoCs.
178 bool "TI Davinci/Keystone GPIO support"
179 default y if ARCH_DAVINCI
180 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
182 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
185 tristate "Synopsys DesignWare APB GPIO driver"
187 select GENERIC_IRQ_CHIP
189 Say Y or M here to build support for the Synopsys DesignWare APB
193 tristate "Spreadtrum EIC support"
194 depends on ARCH_SPRD || COMPILE_TEST
196 select GPIOLIB_IRQCHIP
198 Say yes here to support Spreadtrum EIC device.
201 tristate "Emma Mobile GPIO"
202 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
204 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
208 depends on ARCH_EP93XX
210 select GPIOLIB_IRQCHIP
213 tristate "Support for GPIO pins on XR17V352/354/358"
214 depends on SERIAL_8250_EXAR
216 Selecting this option will enable handling of GPIO pins present
217 on Exar XR17V352/354/358 chips.
220 bool "GE FPGA based GPIO"
224 Support for common GPIO functionality provided on some GE Single Board
227 This driver provides basic support (configure as input or output, read
228 and write pin state) for GPIO implemented in a number of GE single
231 config GPIO_FTGPIO010
232 bool "Faraday FTGPIO010 GPIO"
235 select GPIOLIB_IRQCHIP
236 default (ARCH_GEMINI || ARCH_MOXART)
238 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
239 Cortina systems Gemini platforms, Moxa ART and others.
241 config GPIO_GENERIC_PLATFORM
242 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
245 Say yes here to support basic platform_device memory-mapped GPIO controllers.
248 tristate "Aeroflex Gaisler GRGPIO support"
253 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
254 VHDL IP core library.
257 tristate "Nintendo Wii (Hollywood) GPIO"
260 select GPIOLIB_IRQCHIP
262 Select this to support the GPIO controller of the Nintendo Wii.
267 tristate "Intel ICH GPIO"
268 depends on PCI && X86
272 Say yes here to support the GPIO functionality of a number of Intel
273 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
274 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
275 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
280 tristate "Intel IOP GPIO"
281 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
284 Say yes here to support the GPIO functionality of a number of Intel
290 bool "Intel IXP4xx GPIO"
291 depends on ARM # For <asm/mach-types.h>
292 depends on ARCH_IXP4XX
295 select IRQ_DOMAIN_HIERARCHY
297 Say yes here to support the GPIO functionality of a number of Intel
298 IXP4xx series of chips.
303 bool "Loongson-2/3 GPIO support"
304 depends on CPU_LOONGSON2 || CPU_LOONGSON3
306 driver for GPIO functionality on Loongson-2F/3A/3B processors.
309 tristate "NXP LPC18XX/43XX GPIO support"
310 default y if ARCH_LPC18XX
311 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
312 select IRQ_DOMAIN_HIERARCHY
314 Select this option to enable GPIO driver for
315 NXP LPC18XX/43XX devices.
317 config GPIO_LYNXPOINT
318 tristate "Intel Lynxpoint GPIO support"
319 depends on ACPI && X86
320 select GPIOLIB_IRQCHIP
322 driver for GPIO functionality on Intel Lynxpoint PCH chipset
323 Requires ACPI device enumeration code to set up a platform device.
326 tristate "GPIO support for Fujitsu MB86S7x Platforms"
328 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
331 tristate "MEN 16Z127 GPIO support"
335 Say yes here to support the MEN 16Z127 GPIO Controller
337 config GPIO_MM_LANTIQ
338 bool "Lantiq Memory mapped GPIOs"
339 depends on LANTIQ && SOC_XWAY
341 This enables support for memory mapped GPIOs on the External Bus Unit
342 (EBU) found on Lantiq SoCs. The gpios are output only as they are
343 created by attaching a 16bit latch to the bus.
347 depends on PPC_MPC52xx
350 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
351 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
352 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
357 Say Y here if you're going to use hardware that connects to the
358 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
361 bool "Mediatek MT7621 GPIO Support"
362 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
365 select GPIOLIB_IRQCHIP
367 Say yes here to support the Mediatek MT7621 SoC GPIO device
371 depends on PLAT_ORION || ARCH_MVEBU
373 select GENERIC_IRQ_CHIP
380 select GENERIC_IRQ_CHIP
386 select GENERIC_IRQ_CHIP
389 tristate "Cavium OCTEON GPIO"
390 depends on GPIOLIB && CAVIUM_OCTEON_SOC
393 Say yes here to support the on-chip GPIO lines on the OCTEON
397 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
398 default y if ARCH_OMAP
400 select GENERIC_IRQ_CHIP
401 select GPIOLIB_IRQCHIP
403 Say yes here to enable GPIO support for TI OMAP SoCs.
406 bool "PrimeCell PL061 GPIO support"
409 select GPIOLIB_IRQCHIP
411 Say yes here to support the PrimeCell PL061 GPIO device
413 config GPIO_PMIC_EIC_SPRD
414 tristate "Spreadtrum PMIC EIC support"
415 depends on MFD_SC27XX_PMIC || COMPILE_TEST
417 select GPIOLIB_IRQCHIP
419 Say yes here to support Spreadtrum PMIC EIC device.
422 bool "PXA GPIO support"
423 depends on ARCH_PXA || ARCH_MMP
425 Say yes here to support the PXA GPIO device
428 tristate "Renesas R-Car GPIO"
429 depends on ARCH_RENESAS || COMPILE_TEST
430 select GPIOLIB_IRQCHIP
432 Say yes here to support GPIO on Renesas R-Car SoCs.
437 A 32-bit single register GPIO fixed in/out implementation. This
438 can be used to represent any register as a set of GPIO signals.
440 config GPIO_SAMA5D2_PIOBU
441 tristate "SAMA5D2 PIOBU GPIO support"
442 depends on MFD_SYSCON
446 Say yes here to use the PIOBU pins as GPIOs.
448 PIOBU pins on the SAMA5D2 can be used as GPIOs.
449 The difference from regular GPIOs is that they
450 maintain their value during backup/self-refresh.
453 tristate "SIOX GPIO support"
455 select GPIOLIB_IRQCHIP
457 Say yes here to support SIOX I/O devices. These are units connected
458 via a SIOX bus and have a number of fixed-direction I/O lines.
460 config GPIO_SNPS_CREG
461 bool "Synopsys GPIO via CREG (Control REGisters) driver"
462 depends on ARC || COMPILE_TEST
465 This driver supports GPIOs via CREG on various Synopsys SoCs.
466 This is a single-register MMIO GPIO driver for complex cases
467 where only several fields in register belong to GPIO lines and
468 each GPIO line owns a field with different length and on/off value.
470 config GPIO_SPEAR_SPICS
471 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
472 depends on PLAT_SPEAR
473 select GENERIC_IRQ_CHIP
475 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
478 tristate "Spreadtrum GPIO support"
479 depends on ARCH_SPRD || COMPILE_TEST
481 select GPIOLIB_IRQCHIP
483 Say yes here to support Spreadtrum GPIO device.
486 bool "STA2x11/ConneXt GPIO support"
487 depends on MFD_STA2X11
488 select GENERIC_IRQ_CHIP
490 Say yes here to support the STA2x11/ConneXt GPIO device.
491 The GPIO module has 128 GPIO pins with alternate functions.
494 bool "XWAY STP GPIOs"
497 This enables support for the Serial To Parallel (STP) unit found on
498 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
499 that can be up to 24 bit. This peripheral is aimed at driving leds.
500 Some of the gpios/leds can be auto updated by the soc with dsl and
504 tristate "GPIO based on SYSCON"
505 depends on MFD_SYSCON && OF
507 Say yes here to support GPIO functionality though SYSCON driver.
512 select GENERIC_IRQ_CHIP
516 bool "NVIDIA Tegra GPIO support"
518 depends on ARCH_TEGRA || COMPILE_TEST
521 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
524 tristate "NVIDIA Tegra186 GPIO support"
525 default ARCH_TEGRA_186_SOC
526 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
528 select GPIOLIB_IRQCHIP
530 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
533 tristate "TS-4800 DIO blocks and compatibles"
535 depends on SOC_IMX51 || COMPILE_TEST
538 This driver support TS-4800 FPGA GPIO controllers.
541 tristate "Cavium ThunderX/OCTEON-TX GPIO"
542 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
544 select IRQ_DOMAIN_HIERARCHY
545 select IRQ_FASTEOI_HIERARCHY_HANDLERS
547 Say yes here to support the on-chip GPIO lines on the ThunderX
548 and OCTEON-TX families of SoCs.
551 tristate "UniPhier GPIO support"
552 depends on ARCH_UNIPHIER || COMPILE_TEST
554 select IRQ_DOMAIN_HIERARCHY
556 Say yes here to support UniPhier GPIOs.
560 depends on ARCH_MXC && SOC_VF610
561 select GPIOLIB_IRQCHIP
563 Say yes here to support Vybrid vf610 GPIOs.
566 tristate "NEC VR4100 series General-purpose I/O Uint support"
567 depends on CPU_VR41XX
569 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
572 tristate "VIA VX855/VX875 GPIO"
573 depends on (X86 || COMPILE_TEST) && PCI
577 Support access to the VX855/VX875 GPIO lines through the gpio library.
579 This driver provides common support for accessing the device,
580 additional drivers must be enabled in order to use the
581 functionality of the device.
584 bool "APM X-Gene GPIO controller support"
585 depends on ARM64 && OF_GPIO
587 This driver is to support the GPIO block within the APM X-Gene SoC
588 platform's generic flash controller. The GPIO pins are muxed with
589 the generic flash controller's address and data pins. Say yes
590 here to enable the GFC GPIO functionality.
593 tristate "APM X-Gene GPIO standby controller support"
594 depends on ARCH_XGENE && OF_GPIO
596 select GPIOLIB_IRQCHIP
597 select IRQ_DOMAIN_HIERARCHY
599 This driver supports the GPIO block within the APM X-Gene
600 Standby Domain. Say yes here to enable the GPIO functionality.
603 tristate "Xilinx GPIO support"
606 Say yes here to support the Xilinx FPGA GPIO device
609 tristate "Netlogic XLP GPIO support"
610 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
611 select GPIOLIB_IRQCHIP
613 This driver provides support for GPIO interface on Netlogic XLP MIPS64
614 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
615 XLP9XX and XLP5XX. The same GPIO controller block is also present in
616 Cavium's ThunderX2 CN99XX SoCs.
621 bool "Xtensa GPIO32 support"
623 depends on HAVE_XTENSA_GPIO32
626 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
627 and EXPSTATE (output) ports
630 bool "LSI ZEVIO SoC memory mapped GPIOs"
631 depends on ARM && OF_GPIO
633 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
636 tristate "Xilinx Zynq GPIO support"
637 depends on ARCH_ZYNQ || ARCH_ZYNQMP
638 select GPIOLIB_IRQCHIP
640 Say yes here to support Xilinx Zynq GPIO controller.
643 bool "ZTE ZX GPIO support"
644 depends on ARCH_ZX || COMPILE_TEST
645 select GPIOLIB_IRQCHIP
647 Say yes here to support the GPIO device on ZTE ZX SoCs.
649 config GPIO_LOONGSON1
650 tristate "Loongson1 GPIO support"
651 depends on MACH_LOONGSON32
654 Say Y or M here to support GPIO on Loongson1 SoCs.
657 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
659 This option enables driver for GPIO on AMDs Fusion Controller Hub,
660 as found on G-series SOCs (eg. GX-412TC)
662 Note: This driver doesn't registers itself automatically, as it
663 needs to be provided with platform specific configuration.
664 (See eg. CONFIG_PCENGINES_APU2.)
667 menu "Port-mapped I/O GPIO drivers"
668 depends on X86 # Unconditional I/O space access
670 config GPIO_104_DIO_48E
671 tristate "ACCES 104-DIO-48E GPIO support"
674 select GPIOLIB_IRQCHIP
676 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
677 104-DIO-24E). The base port addresses for the devices may be
678 configured via the base module parameter. The interrupt line numbers
679 for the devices may be configured via the irq module parameter.
681 config GPIO_104_IDIO_16
682 tristate "ACCES 104-IDIO-16 GPIO support"
685 select GPIOLIB_IRQCHIP
687 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
688 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
689 base port addresses for the devices may be configured via the base
690 module parameter. The interrupt line numbers for the devices may be
691 configured via the irq module parameter.
693 config GPIO_104_IDI_48
694 tristate "ACCES 104-IDI-48 GPIO support"
697 select GPIOLIB_IRQCHIP
699 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
700 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
701 the devices may be configured via the base module parameter. The
702 interrupt line numbers for the devices may be configured via the irq
706 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
708 This option enables support for GPIOs found on Fintek Super-I/O
709 chips F71869, F71869A, F71882FG, F71889F and F81866.
711 To compile this driver as a module, choose M here: the module will
712 be called f7188x-gpio.
715 tristate "Diamond Systems GPIO-MM GPIO support"
719 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
721 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
722 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
723 support for these 48 channels of digital I/O.
725 The base port addresses for the devices may be configured via the base
726 array module parameter.
729 tristate "IT87xx GPIO support"
731 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
733 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
734 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
737 To compile this driver as a module, choose M here: the module will
741 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
742 depends on (X86 || COMPILE_TEST) && PCI
746 Say yes here to support GPIO interface on Intel Poulsbo SCH,
747 Intel Tunnel Creek processor, Intel Centerton processor or
748 Intel Quark X1000 SoC.
750 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
751 powered by the core power rail and are turned off during sleep
752 modes (S3 and higher). The remaining four GPIOs are powered by
753 the Intel SCH suspend power supply. These GPIOs remain
754 active during S3. The suspend powered GPIOs can be used to wake the
755 system from the Suspend-to-RAM state.
757 The Intel Tunnel Creek processor has 5 GPIOs powered by the
758 core power rail and 9 from suspend power supply.
760 The Intel Centerton processor has a total of 30 GPIO pins.
761 Twenty-one are powered by the core power rail and 9 from the
762 suspend power supply.
764 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
765 power well and 6 from the suspend power well.
768 tristate "SMSC SCH311x SuperI/O GPIO"
770 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
771 SCH3116 "Super I/O" chipsets.
773 To compile this driver as a module, choose M here: the module will
774 be called gpio-sch311x.
777 tristate "TS-5500 DIO blocks and compatibles"
778 depends on TS5500 || COMPILE_TEST
780 This driver supports Digital I/O exposed by pin blocks found on some
781 Technologic Systems platforms. It includes, but is not limited to, 3
782 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
786 tristate "Winbond Super I/O GPIO support"
789 This option enables support for GPIOs found on Winbond Super I/O
791 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
794 You will need to provide a module parameter "gpios", or a
795 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
796 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
798 To compile this driver as a module, choose M here: the module will
799 be called gpio-winbond.
802 tristate "WinSystems WS16C48 GPIO support"
804 select GPIOLIB_IRQCHIP
806 Enables GPIO support for the WinSystems WS16C48. The base port
807 addresses for the devices may be configured via the base module
808 parameter. The interrupt line numbers for the devices may be
809 configured via the irq module parameter.
813 menu "I2C GPIO expanders"
817 tristate "ADP5588 I2C GPIO expander"
819 This option enables support for 18 GPIOs found
820 on Analog Devices ADP5588 GPIO Expanders.
822 config GPIO_ADP5588_IRQ
823 bool "Interrupt controller support for ADP5588"
824 depends on GPIO_ADP5588=y
826 Say yes here to enable the adp5588 to be used as an interrupt
827 controller. It requires the driver to be built in the kernel.
830 tristate "Avionic Design N-bit GPIO expander"
832 select GPIOLIB_IRQCHIP
834 This option enables support for N GPIOs found on Avionic Design
835 I2C GPIO expanders. The register space will be extended by powers
836 of two, so the controller will need to accommodate for that. For
837 example: if a controller provides 48 pins, 6 registers will be
838 enough to represent all pins, but the driver will assume a
839 register layout for 64 pins (8 registers).
842 tristate "Gateworks PLD GPIO Expander"
845 Say yes here to provide access to the Gateworks I2C PLD GPIO
846 Expander. This is used at least on the Cambria GW2358-4.
849 tristate "Maxim MAX7300 GPIO expander"
852 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
855 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
857 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
858 Port Expanders. Each IO port on these chips has a fixed role of
859 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
860 Input and Output (designed by 'P'). The combinations are listed
863 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
864 max7322 (4I4O), max7323 (4P4O)
866 16 bits: max7324 (8I8O), max7325 (8P8O),
867 max7326 (4I12O), max7327 (4P12O)
869 Board setup code must specify the model to use, and the start
870 number for these GPIOs.
872 config GPIO_MAX732X_IRQ
873 bool "Interrupt controller support for MAX732x"
874 depends on GPIO_MAX732X=y
875 select GPIOLIB_IRQCHIP
877 Say yes here to enable the max732x to be used as an interrupt
878 controller. It requires the driver to be built in the kernel.
880 config GPIO_MC9S08DZ60
881 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
882 depends on I2C=y && MACH_MX35_3DS
884 Select this to enable the MC9S08DZ60 GPIO driver
887 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
890 Say yes here to provide access to several register-oriented
891 SMBus I/O expanders, made mostly by NXP or TI. Compatible
894 4 bits: pca9536, pca9537
896 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
897 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
899 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
904 40 bits: pca9505, pca9698
906 config GPIO_PCA953X_IRQ
907 bool "Interrupt controller support for PCA953x"
908 depends on GPIO_PCA953X=y
909 select GPIOLIB_IRQCHIP
911 Say yes here to enable the pca953x to be used as an interrupt
912 controller. It requires the driver to be built in the kernel.
915 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
916 select GPIOLIB_IRQCHIP
919 Say yes here to provide access to most "quasi-bidirectional" I2C
920 GPIO expanders used for additional digital outputs or inputs.
921 Most of these parts are from NXP, though TI is a second source for
922 some of them. Compatible models include:
924 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
925 pca9670, pca9672, pca9674, pca9674a,
928 16 bits: pcf8575, pcf8575c, pca8575,
929 pca9671, pca9673, pca9675
931 Your board setup code will need to declare the expanders in
932 use, and assign numbers to the GPIOs they expose. Those GPIOs
933 can then be used from drivers and other kernel code, just like
934 other GPIOs, but only accessible from task contexts.
936 This driver provides an in-kernel interface to those GPIOs using
937 platform-neutral GPIO calls.
940 tristate "TPIC2810 8-Bit I2C GPO expander"
942 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
944 To compile this driver as a module, choose M here: the module will
945 be called gpio-tpic2810.
948 tristate "Technologic Systems FPGA I2C GPIO"
949 depends on SOC_IMX6 || COMPILE_TEST
952 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
953 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
957 menu "MFD GPIO expanders"
960 tristate "GPIO Support for ADP5520 PMIC"
961 depends on PMIC_ADP5520
963 This option enables support for on-chip GPIO found
964 on Analog Devices ADP5520 PMICs.
966 config GPIO_ALTERA_A10SR
967 tristate "Altera Arria10 System Resource GPIO"
968 depends on MFD_ALTERA_A10SR
970 Driver for Arria10 Development Kit GPIO expansion which
971 includes reads of pushbuttons and DIP switches as well
975 tristate "Wolfson Microelectronics Arizona class devices"
976 depends on MFD_ARIZONA
978 Support for GPIOs on Wolfson Arizona class devices.
980 config GPIO_BD9571MWV
981 tristate "ROHM BD9571 GPIO support"
982 depends on MFD_BD9571MWV
984 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
985 available on the ROHM PMIC in total, both of which can also
988 This driver can also be built as a module. If so, the module
989 will be called gpio-bd9571mwv.
991 config GPIO_CRYSTAL_COVE
992 tristate "GPIO support for Crystal Cove PMIC"
993 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
994 select GPIOLIB_IRQCHIP
996 Support for GPIO pins on Crystal Cove PMIC.
998 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1001 This driver can also be built as a module. If so, the module will be
1002 called gpio-crystalcove.
1005 tristate "AMD CS5535/CS5536 GPIO support"
1006 depends on X86 || MIPS || COMPILE_TEST
1007 depends on MFD_CS5535
1009 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1010 can be used for quite a number of things. The CS5535/6 is found on
1011 AMD Geode and Lemote Yeeloong devices.
1016 tristate "Dialog DA9052 GPIO"
1017 depends on PMIC_DA9052
1019 Say yes here to enable the GPIO driver for the DA9052 chip.
1022 tristate "Dialog Semiconductor DA9055 GPIO"
1023 depends on MFD_DA9055
1025 Say yes here to enable the GPIO driver for the DA9055 chip.
1027 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1028 be controller by this driver.
1030 If driver is built as a module it will be called gpio-da9055.
1033 tristate "Diolan DLN2 GPIO support"
1035 select GPIOLIB_IRQCHIP
1038 Select this option to enable GPIO driver for the Diolan DLN2
1041 This driver can also be built as a module. If so, the module
1042 will be called gpio-dln2.
1045 bool "HTC EGPIO support"
1046 depends on GPIOLIB && ARM
1048 This driver supports the CPLD egpio chip present on
1049 several HTC phones. It provides basic support for input
1050 pins, output pins, and irqs.
1052 config GPIO_JANZ_TTL
1053 tristate "Janz VMOD-TTL Digital IO Module"
1054 depends on MFD_JANZ_CMODIO
1056 This enables support for the Janz VMOD-TTL Digital IO module.
1057 This driver provides support for driving the pins in output
1058 mode only. Input mode is not supported.
1061 tristate "Kontron ETX / COMexpress GPIO"
1062 depends on MFD_KEMPLD
1064 This enables support for the PLD GPIO interface on some Kontron ETX
1065 and COMexpress (ETXexpress) modules.
1067 This driver can also be built as a module. If so, the module will be
1071 tristate "TI/National Semiconductor LP3943 GPIO expander"
1072 depends on MFD_LP3943
1074 GPIO driver for LP3943 MFD.
1075 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1076 Open drain outputs are required for this usage.
1079 tristate "TI LP873X GPO"
1080 depends on MFD_TI_LP873X
1082 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1085 This driver can also be built as a module. If so, the module will be
1089 tristate "TI LP87565 GPIO"
1090 depends on MFD_TI_LP87565
1092 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1095 This driver can also be built as a module. If so, the module will be
1096 called gpio-lp87565.
1099 tristate "Cirrus Logic Madera class codecs"
1100 depends on PINCTRL_MADERA
1102 Support for GPIOs on Cirrus Logic Madera class codecs.
1104 config GPIO_MAX77620
1105 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1106 depends on MFD_MAX77620
1108 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1109 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1110 driver also provides interrupt support for each of the gpios.
1111 Say yes here to enable the max77620 to be used as gpio controller.
1113 config GPIO_MAX77650
1114 tristate "Maxim MAX77650/77651 GPIO support"
1115 depends on MFD_MAX77650
1117 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1118 These chips have a single pin that can be configured as GPIO.
1121 bool "Intel MSIC mixed signal gpio support"
1122 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1124 Enable support for GPIO on intel MSIC controllers found in
1128 bool "TI PALMAS series PMICs GPIO"
1129 depends on MFD_PALMAS
1131 Select this option to enable GPIO driver for the TI PALMAS
1135 bool "RICOH RC5T583 GPIO"
1136 depends on MFD_RC5T583
1138 Select this option to enable GPIO driver for the Ricoh RC5T583
1140 This driver provides the support for driving/reading the gpio pins
1141 of RC5T583 device through standard gpio library.
1145 depends on MFD_STMPE
1147 select GPIOLIB_IRQCHIP
1149 This enables support for the GPIOs found on the STMPE I/O
1153 bool "TC3589X GPIOs"
1154 depends on MFD_TC3589X
1156 select GPIOLIB_IRQCHIP
1158 This enables support for the GPIOs found on the TC3589X
1161 config GPIO_TIMBERDALE
1162 bool "Support for timberdale GPIO IP"
1163 depends on MFD_TIMBERDALE
1165 Add support for the GPIO IP in the timberdale FPGA.
1167 config GPIO_TPS65086
1168 tristate "TI TPS65086 GPO"
1169 depends on MFD_TPS65086
1171 This driver supports the GPO on TI TPS65086x PMICs.
1173 config GPIO_TPS65218
1174 tristate "TPS65218 GPIO"
1175 depends on MFD_TPS65218
1177 Select this option to enable GPIO driver for the TPS65218
1180 config GPIO_TPS6586X
1181 bool "TPS6586X GPIO"
1182 depends on MFD_TPS6586X
1184 Select this option to enable GPIO driver for the TPS6586X
1187 config GPIO_TPS65910
1188 bool "TPS65910 GPIO"
1189 depends on MFD_TPS65910
1191 Select this option to enable GPIO driver for the TPS65910
1194 config GPIO_TPS65912
1195 tristate "TI TPS65912 GPIO"
1196 depends on MFD_TPS65912
1198 This driver supports TPS65912 gpio chip
1200 config GPIO_TPS68470
1201 bool "TPS68470 GPIO"
1202 depends on MFD_TPS68470
1204 Select this option to enable GPIO driver for the TPS68470
1206 There are 7 GPIOs and few sensor related GPIOs supported
1207 by the TPS68470. While the 7 GPIOs can be configured as
1208 input or output as appropriate, the sensor related GPIOs
1209 are "output only" GPIOs.
1211 This driver config is bool, as the GPIO functionality
1212 of the TPS68470 must be available before dependent
1216 tristate "TQ-Systems QTMX86 GPIO"
1217 depends on MFD_TQMX86 || COMPILE_TEST
1218 select GPIOLIB_IRQCHIP
1220 This driver supports GPIO on the TQMX86 IO controller.
1223 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1224 depends on TWL4030_CORE
1226 Say yes here to access the GPIO signals of various multi-function
1227 power management chips from Texas Instruments.
1230 tristate "TWL6040 GPO"
1231 depends on TWL6040_CORE
1233 Say yes here to access the GPO signals of twl6040
1234 audio chip from Texas Instruments.
1237 tristate "Philips UCB1400 GPIO"
1238 depends on UCB1400_CORE
1240 This enables support for the Philips UCB1400 GPIO pins.
1241 The UCB1400 is an AC97 audio codec.
1243 config GPIO_WHISKEY_COVE
1244 tristate "GPIO support for Whiskey Cove PMIC"
1245 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1246 select GPIOLIB_IRQCHIP
1248 Support for GPIO pins on Whiskey Cove PMIC.
1250 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1253 This driver can also be built as a module. If so, the module will be
1257 tristate "WM831x GPIOs"
1258 depends on MFD_WM831X
1260 Say yes here to access the GPIO signals of WM831x power management
1261 chips from Wolfson Microelectronics.
1264 tristate "WM8350 GPIOs"
1265 depends on MFD_WM8350
1267 Say yes here to access the GPIO signals of WM8350 power management
1268 chips from Wolfson Microelectronics.
1271 tristate "WM8994 GPIOs"
1272 depends on MFD_WM8994
1274 Say yes here to access the GPIO signals of WM8994 audio hub
1275 CODECs from Wolfson Microelectronics.
1279 menu "PCI GPIO expanders"
1283 tristate "AMD 8111 GPIO driver"
1284 depends on X86 || COMPILE_TEST
1286 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1288 Note, that usually system firmware/ACPI handles GPIO pins on their
1289 own and users might easily break their systems with uncarefull usage
1295 tristate "BT8XX GPIO abuser"
1296 depends on VIDEO_BT848=n
1298 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1299 as a cheap PCI GPIO card.
1301 This chip can be found on Miro, Hauppauge and STB TV-cards.
1303 The card needs to be physically altered for using it as a
1304 GPIO card. For more information on how to build a GPIO card
1305 from a BT8xx TV card, see the documentation file at
1306 Documentation/bt8xxgpio.txt
1310 config GPIO_INTEL_MID
1311 bool "Intel MID GPIO support"
1312 depends on X86_INTEL_MID
1313 select GPIOLIB_IRQCHIP
1315 Say Y here to support Intel MID GPIO.
1317 config GPIO_MERRIFIELD
1318 tristate "Intel Merrifield GPIO support"
1319 depends on X86_INTEL_MID
1320 select GPIOLIB_IRQCHIP
1322 Say Y here to support Intel Merrifield GPIO.
1325 tristate "Mellanox BlueField SoC GPIO"
1326 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1329 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1332 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1333 depends on X86 || COMPILE_TEST
1334 select GENERIC_IRQ_CHIP
1336 ML7213 is companion chip for Intel Atom E6xx series.
1337 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1338 Hub) which is for IVI(In-Vehicle Infotainment) use.
1339 This driver can access the IOH's GPIO device.
1342 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1343 depends on X86_32 || MIPS || COMPILE_TEST
1344 select GENERIC_IRQ_CHIP
1346 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1347 which is an IOH(Input/Output Hub) for x86 embedded processor.
1348 This driver can access PCH GPIO device.
1350 This driver also can be used for LAPIS Semiconductor IOH(Input/
1351 Output Hub), ML7223 and ML7831.
1352 ML7223 IOH is for MP(Media Phone) use.
1353 ML7831 IOH is for general purpose use.
1354 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1355 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1357 config GPIO_PCI_IDIO_16
1358 tristate "ACCES PCI-IDIO-16 GPIO support"
1359 select GPIOLIB_IRQCHIP
1361 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1362 generated when any of the inputs change state (low to high or high to
1363 low). Input filter control is not supported by this driver, and the
1364 input filters are deactivated by this driver.
1366 config GPIO_PCIE_IDIO_24
1367 tristate "ACCES PCIe-IDIO-24 GPIO support"
1368 select GPIOLIB_IRQCHIP
1370 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1371 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1372 when any of the inputs change state (low to high or high to low).
1373 Input filter control is not supported by this driver, and the input
1374 filters are deactivated by this driver.
1377 tristate "RDC R-321x GPIO support"
1381 Support for the RDC R321x SoC GPIOs over southbridge
1382 PCI configuration space.
1384 config GPIO_SODAVILLE
1385 bool "Intel Sodaville GPIO support"
1386 depends on X86 && OF
1388 select GENERIC_IRQ_CHIP
1390 Say Y here to support Intel Sodaville GPIO.
1394 menu "SPI GPIO expanders"
1395 depends on SPI_MASTER
1398 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1401 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1402 shift registers. This driver can be used to provide access
1403 to more gpio outputs.
1405 config GPIO_MAX3191X
1406 tristate "Maxim MAX3191x industrial serializer"
1409 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1410 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1411 chip to make 8 digital 24V inputs available via SPI. Supports
1412 CRC checksums to guard against electromagnetic interference,
1413 as well as undervoltage and overtemperature detection.
1416 tristate "Maxim MAX7301 GPIO expander"
1419 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1422 tristate "Freescale MC33880 high-side/low-side switch"
1424 SPI driver for Freescale MC33880 high-side/low-side switch.
1425 This provides GPIO interface supporting inputs and outputs.
1428 tristate "Generic parallel-in/serial-out shift register"
1430 GPIO driver for SPI compatible parallel-in/serial-out shift
1431 registers. These are input only devices.
1434 tristate "EXAR XRA1403 16-bit GPIO expander"
1437 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1441 menu "USB GPIO expanders"
1444 config GPIO_VIPERBOARD
1445 tristate "Viperboard GPIO a & b support"
1446 depends on MFD_VIPERBOARD
1448 Say yes here to access the GPIO signals of Nano River
1449 Technologies Viperboard. There are two GPIO chips on the
1450 board: gpioa and gpiob.
1451 See viperboard API specification and Nano
1452 River Tech's viperboard.h for detailed meaning
1453 of the module parameters.
1458 tristate "GPIO Testing Driver"
1462 This enables GPIO Testing driver, which provides a way to test GPIO
1463 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1464 must be selected for this test.
1465 User could use it through the script in
1466 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in