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
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 a sysfs interface for GPIOs.
67 This is mostly useful to work around omissions in a system's
68 kernel support. Those are common in custom and semicustom
69 hardware assembled using standard kernels with a minimum of
70 custom patches. In those cases, userspace code may import
71 a given GPIO from the kernel, if no kernel driver requested it.
73 Kernel drivers may also request that a particular GPIO be
74 exported to userspace; this can be useful when debugging.
77 depends on HAS_IOMEM # Only for IOMEM drivers
80 # put drivers in the right section, in alphabetical order
82 # This symbol is selected by both I2C and SPI expanders
86 menu "Memory mapped GPIO drivers"
90 tristate "GPIO driver for 74xx-ICs with MMIO access"
94 Say yes here to support GPIO functionality for 74xx-compatible ICs
95 with MMIO access. Compatible models include:
96 1 bit: 741G125 (Input), 741G74 (Output)
97 2 bits: 742G125 (Input), 7474 (Output)
98 4 bits: 74125 (Input), 74175 (Output)
99 6 bits: 74365 (Input), 74174 (Output)
100 8 bits: 74244 (Input), 74273 (Output)
101 16 bits: 741624 (Input), 7416374 (Output)
104 tristate "Altera GPIO"
106 select GPIOLIB_IRQCHIP
108 Say Y or M here to build support for the Altera PIO device.
110 If driver is built as a module it will be called gpio-altera.
113 tristate "AMD Promontory GPIO support"
117 driver for GPIO functionality on Promontory IOHub
118 Require ACPI ASL code to enumerate as a platform device.
121 tristate "Aspeed GPIO support"
122 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
123 select GPIOLIB_IRQCHIP
125 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
128 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
130 depends on ATH79 || COMPILE_TEST
132 select GPIOLIB_IRQCHIP
134 Select this option to enable GPIO driver for
135 Atheros AR71XX/AR724X/AR913X SoC devices.
137 config GPIO_RASPBERRYPI_EXP
138 tristate "Raspberry Pi 3 GPIO Expander"
139 default RASPBERRYPI_FIRMWARE
141 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
142 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
143 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
145 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
146 the firmware mailbox to communicate with VideoCore on BCM283x chips.
149 bool "Broadcom Kona GPIO"
150 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
152 Turn on GPIO support for Broadcom "Kona" chips.
155 tristate "BRCMSTB GPIO support"
156 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
157 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
161 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
164 tristate "CLPS711X GPIO support"
165 depends on ARCH_CLPS711X || COMPILE_TEST
168 Say yes here to support GPIO on CLPS711X SoCs.
171 bool "TI Davinci/Keystone GPIO support"
172 default y if ARCH_DAVINCI
173 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
175 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
178 tristate "Synopsys DesignWare APB GPIO driver"
180 select GENERIC_IRQ_CHIP
182 Say Y or M here to build support for the Synopsys DesignWare APB
186 tristate "Spreadtrum EIC support"
187 depends on ARCH_SPRD || COMPILE_TEST
189 select GPIOLIB_IRQCHIP
191 Say yes here to support Spreadtrum EIC device.
194 tristate "Emma Mobile GPIO"
195 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
197 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
201 depends on ARCH_EP93XX
205 tristate "Support for GPIO pins on XR17V352/354/358"
206 depends on SERIAL_8250_EXAR
208 Selecting this option will enable handling of GPIO pins present
209 on Exar XR17V352/354/358 chips.
212 bool "GE FPGA based GPIO"
216 Support for common GPIO functionality provided on some GE Single Board
219 This driver provides basic support (configure as input or output, read
220 and write pin state) for GPIO implemented in a number of GE single
223 config GPIO_FTGPIO010
224 bool "Faraday FTGPIO010 GPIO"
227 select GPIOLIB_IRQCHIP
228 default (ARCH_GEMINI || ARCH_MOXART)
230 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
231 Cortina systems Gemini platforms, Moxa ART and others.
233 config GPIO_GENERIC_PLATFORM
234 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
237 Say yes here to support basic platform_device memory-mapped GPIO controllers.
240 tristate "Aeroflex Gaisler GRGPIO support"
245 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
246 VHDL IP core library.
249 tristate "Nintendo Wii (Hollywood) GPIO"
253 Select this to support the GPIO controller of the Nintendo Wii.
258 tristate "Intel ICH GPIO"
259 depends on PCI && X86
263 Say yes here to support the GPIO functionality of a number of Intel
264 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
265 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
266 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
271 tristate "Ingenic JZ47xx SoCs GPIO support"
273 depends on MACH_INGENIC || COMPILE_TEST
274 select GPIOLIB_IRQCHIP
276 Say yes here to support the GPIO functionality present on the
277 JZ4740 and JZ4780 SoCs from Ingenic.
282 tristate "Intel IOP GPIO"
283 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
286 Say yes here to support the GPIO functionality of a number of Intel
292 bool "Loongson-2/3 GPIO support"
293 depends on CPU_LOONGSON2 || CPU_LOONGSON3
295 driver for GPIO functionality on Loongson-2F/3A/3B processors.
298 tristate "NXP LPC18XX/43XX GPIO support"
299 default y if ARCH_LPC18XX
300 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
302 Select this option to enable GPIO driver for
303 NXP LPC18XX/43XX devices.
305 config GPIO_LYNXPOINT
306 tristate "Intel Lynxpoint GPIO support"
307 depends on ACPI && X86
308 select GPIOLIB_IRQCHIP
310 driver for GPIO functionality on Intel Lynxpoint PCH chipset
311 Requires ACPI device enumeration code to set up a platform device.
314 tristate "GPIO support for Fujitsu MB86S7x Platforms"
316 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
319 tristate "MEN 16Z127 GPIO support"
323 Say yes here to support the MEN 16Z127 GPIO Controller
325 config GPIO_MM_LANTIQ
326 bool "Lantiq Memory mapped GPIOs"
327 depends on LANTIQ && SOC_XWAY
329 This enables support for memory mapped GPIOs on the External Bus Unit
330 (EBU) found on Lantiq SoCs. The gpios are output only as they are
331 created by attaching a 16bit latch to the bus.
334 tristate "GPIO Testing Driver"
335 depends on GPIOLIB && SYSFS
337 select GPIOLIB_IRQCHIP
340 This enables GPIO Testing driver, which provides a way to test GPIO
341 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
342 must be selected for this test.
343 User could use it through the script in
344 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
349 depends on PPC_MPC52xx
352 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
353 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
354 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
359 Say Y here if you're going to use hardware that connects to the
360 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
364 depends on PLAT_ORION || ARCH_MVEBU
366 select GENERIC_IRQ_CHIP
373 select GENERIC_IRQ_CHIP
379 select GENERIC_IRQ_CHIP
382 tristate "Cavium OCTEON GPIO"
383 depends on GPIOLIB && CAVIUM_OCTEON_SOC
386 Say yes here to support the on-chip GPIO lines on the OCTEON
390 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
391 default y if ARCH_OMAP
393 select GENERIC_IRQ_CHIP
394 select GPIOLIB_IRQCHIP
396 Say yes here to enable GPIO support for TI OMAP SoCs.
399 bool "PrimeCell PL061 GPIO support"
402 select GPIOLIB_IRQCHIP
404 Say yes here to support the PrimeCell PL061 GPIO device
406 config GPIO_PMIC_EIC_SPRD
407 tristate "Spreadtrum PMIC EIC support"
408 depends on MFD_SC27XX_PMIC || COMPILE_TEST
410 select GPIOLIB_IRQCHIP
412 Say yes here to support Spreadtrum PMIC EIC device.
415 bool "PXA GPIO support"
416 depends on ARCH_PXA || ARCH_MMP
418 Say yes here to support the PXA GPIO device
421 tristate "Renesas R-Car GPIO"
422 depends on ARCH_RENESAS || COMPILE_TEST
423 select GPIOLIB_IRQCHIP
425 Say yes here to support GPIO on Renesas R-Car SoCs.
430 A 32-bit single register GPIO fixed in/out implementation. This
431 can be used to represent any register as a set of GPIO signals.
433 config GPIO_SPEAR_SPICS
434 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
435 depends on PLAT_SPEAR
436 select GENERIC_IRQ_CHIP
438 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
441 tristate "Spreadtrum GPIO support"
442 depends on ARCH_SPRD || COMPILE_TEST
444 select GPIOLIB_IRQCHIP
446 Say yes here to support Spreadtrum GPIO device.
449 bool "STA2x11/ConneXt GPIO support"
450 depends on MFD_STA2X11
451 select GENERIC_IRQ_CHIP
453 Say yes here to support the STA2x11/ConneXt GPIO device.
454 The GPIO module has 128 GPIO pins with alternate functions.
457 bool "XWAY STP GPIOs"
460 This enables support for the Serial To Parallel (STP) unit found on
461 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
462 that can be up to 24 bit. This peripheral is aimed at driving leds.
463 Some of the gpios/leds can be auto updated by the soc with dsl and
467 tristate "GPIO based on SYSCON"
468 depends on MFD_SYSCON && OF
470 Say yes here to support GPIO functionality though SYSCON driver.
474 select GENERIC_IRQ_CHIP
478 bool "NVIDIA Tegra GPIO support"
480 depends on ARCH_TEGRA || COMPILE_TEST
483 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
486 tristate "NVIDIA Tegra186 GPIO support"
487 default ARCH_TEGRA_186_SOC
488 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
490 select GPIOLIB_IRQCHIP
492 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
495 tristate "TS-4800 DIO blocks and compatibles"
497 depends on SOC_IMX51 || COMPILE_TEST
500 This driver support TS-4800 FPGA GPIO controllers.
503 tristate "Cavium ThunderX/OCTEON-TX GPIO"
504 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
506 select IRQ_DOMAIN_HIERARCHY
507 select IRQ_FASTEOI_HIERARCHY_HANDLERS
509 Say yes here to support the on-chip GPIO lines on the ThunderX
510 and OCTEON-TX families of SoCs.
513 tristate "UniPhier GPIO support"
514 depends on ARCH_UNIPHIER || COMPILE_TEST
516 select IRQ_DOMAIN_HIERARCHY
518 Say yes here to support UniPhier GPIOs.
522 depends on ARCH_MXC && SOC_VF610
523 select GPIOLIB_IRQCHIP
525 Say yes here to support Vybrid vf610 GPIOs.
528 tristate "NEC VR4100 series General-purpose I/O Uint support"
529 depends on CPU_VR41XX
531 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
534 tristate "VIA VX855/VX875 GPIO"
535 depends on (X86 || COMPILE_TEST) && PCI
539 Support access to the VX855/VX875 GPIO lines through the gpio library.
541 This driver provides common support for accessing the device,
542 additional drivers must be enabled in order to use the
543 functionality of the device.
546 bool "APM X-Gene GPIO controller support"
547 depends on ARM64 && OF_GPIO
549 This driver is to support the GPIO block within the APM X-Gene SoC
550 platform's generic flash controller. The GPIO pins are muxed with
551 the generic flash controller's address and data pins. Say yes
552 here to enable the GFC GPIO functionality.
555 tristate "APM X-Gene GPIO standby controller support"
556 depends on ARCH_XGENE && OF_GPIO
558 select GPIOLIB_IRQCHIP
559 select IRQ_DOMAIN_HIERARCHY
561 This driver supports the GPIO block within the APM X-Gene
562 Standby Domain. Say yes here to enable the GPIO functionality.
565 tristate "Xilinx GPIO support"
568 Say yes here to support the Xilinx FPGA GPIO device
571 tristate "Netlogic XLP GPIO support"
572 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
573 select GPIOLIB_IRQCHIP
575 This driver provides support for GPIO interface on Netlogic XLP MIPS64
576 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
577 XLP9XX and XLP5XX. The same GPIO controller block is also present in
578 Cavium's ThunderX2 CN99XX SoCs.
583 bool "Xtensa GPIO32 support"
585 depends on HAVE_XTENSA_GPIO32
588 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
589 and EXPSTATE (output) ports
592 bool "LSI ZEVIO SoC memory mapped GPIOs"
593 depends on ARM && OF_GPIO
595 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
598 tristate "Xilinx Zynq GPIO support"
599 depends on ARCH_ZYNQ || ARCH_ZYNQMP
600 select GPIOLIB_IRQCHIP
602 Say yes here to support Xilinx Zynq GPIO controller.
605 bool "ZTE ZX GPIO support"
606 depends on ARCH_ZX || COMPILE_TEST
607 select GPIOLIB_IRQCHIP
609 Say yes here to support the GPIO device on ZTE ZX SoCs.
611 config GPIO_LOONGSON1
612 tristate "Loongson1 GPIO support"
613 depends on MACH_LOONGSON32
616 Say Y or M here to support GPIO on Loongson1 SoCs.
620 menu "Port-mapped I/O GPIO drivers"
621 depends on X86 # Unconditional I/O space access
623 config GPIO_104_DIO_48E
624 tristate "ACCES 104-DIO-48E GPIO support"
627 select GPIOLIB_IRQCHIP
629 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
630 104-DIO-24E). The base port addresses for the devices may be
631 configured via the base module parameter. The interrupt line numbers
632 for the devices may be configured via the irq module parameter.
634 config GPIO_104_IDIO_16
635 tristate "ACCES 104-IDIO-16 GPIO support"
638 select GPIOLIB_IRQCHIP
640 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
641 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
642 base port addresses for the devices may be configured via the base
643 module parameter. The interrupt line numbers for the devices may be
644 configured via the irq module parameter.
646 config GPIO_104_IDI_48
647 tristate "ACCES 104-IDI-48 GPIO support"
650 select GPIOLIB_IRQCHIP
652 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
653 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
654 the devices may be configured via the base module parameter. The
655 interrupt line numbers for the devices may be configured via the irq
659 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
661 This option enables support for GPIOs found on Fintek Super-I/O
662 chips F71869, F71869A, F71882FG, F71889F and F81866.
664 To compile this driver as a module, choose M here: the module will
665 be called f7188x-gpio.
668 tristate "Diamond Systems GPIO-MM GPIO support"
672 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
674 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
675 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
676 support for these 48 channels of digital I/O.
678 The base port addresses for the devices may be configured via the base
679 array module parameter.
682 tristate "IT87xx GPIO support"
684 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
686 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
687 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
689 To compile this driver as a module, choose M here: the module will
693 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
694 depends on (X86 || COMPILE_TEST) && PCI
698 Say yes here to support GPIO interface on Intel Poulsbo SCH,
699 Intel Tunnel Creek processor, Intel Centerton processor or
700 Intel Quark X1000 SoC.
702 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
703 powered by the core power rail and are turned off during sleep
704 modes (S3 and higher). The remaining four GPIOs are powered by
705 the Intel SCH suspend power supply. These GPIOs remain
706 active during S3. The suspend powered GPIOs can be used to wake the
707 system from the Suspend-to-RAM state.
709 The Intel Tunnel Creek processor has 5 GPIOs powered by the
710 core power rail and 9 from suspend power supply.
712 The Intel Centerton processor has a total of 30 GPIO pins.
713 Twenty-one are powered by the core power rail and 9 from the
714 suspend power supply.
716 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
717 power well and 6 from the suspend power well.
720 tristate "SMSC SCH311x SuperI/O GPIO"
722 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
723 SCH3116 "Super I/O" chipsets.
725 To compile this driver as a module, choose M here: the module will
726 be called gpio-sch311x.
729 tristate "TS-5500 DIO blocks and compatibles"
730 depends on TS5500 || COMPILE_TEST
732 This driver supports Digital I/O exposed by pin blocks found on some
733 Technologic Systems platforms. It includes, but is not limited to, 3
734 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
738 tristate "Winbond Super I/O GPIO support"
741 This option enables support for GPIOs found on Winbond Super I/O
743 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
746 You will need to provide a module parameter "gpios", or a
747 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
748 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
750 To compile this driver as a module, choose M here: the module will
751 be called gpio-winbond.
754 tristate "WinSystems WS16C48 GPIO support"
756 select GPIOLIB_IRQCHIP
758 Enables GPIO support for the WinSystems WS16C48. The base port
759 addresses for the devices may be configured via the base module
760 parameter. The interrupt line numbers for the devices may be
761 configured via the irq module parameter.
765 menu "I2C GPIO expanders"
769 tristate "ADP5588 I2C GPIO expander"
771 This option enables support for 18 GPIOs found
772 on Analog Devices ADP5588 GPIO Expanders.
774 config GPIO_ADP5588_IRQ
775 bool "Interrupt controller support for ADP5588"
776 depends on GPIO_ADP5588=y
778 Say yes here to enable the adp5588 to be used as an interrupt
779 controller. It requires the driver to be built in the kernel.
782 tristate "Avionic Design N-bit GPIO expander"
784 select GPIOLIB_IRQCHIP
786 This option enables support for N GPIOs found on Avionic Design
787 I2C GPIO expanders. The register space will be extended by powers
788 of two, so the controller will need to accommodate for that. For
789 example: if a controller provides 48 pins, 6 registers will be
790 enough to represent all pins, but the driver will assume a
791 register layout for 64 pins (8 registers).
794 tristate "Maxim MAX7300 GPIO expander"
797 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
800 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
802 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
803 Port Expanders. Each IO port on these chips has a fixed role of
804 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
805 Input and Output (designed by 'P'). The combinations are listed
808 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
809 max7322 (4I4O), max7323 (4P4O)
811 16 bits: max7324 (8I8O), max7325 (8P8O),
812 max7326 (4I12O), max7327 (4P12O)
814 Board setup code must specify the model to use, and the start
815 number for these GPIOs.
817 config GPIO_MAX732X_IRQ
818 bool "Interrupt controller support for MAX732x"
819 depends on GPIO_MAX732X=y
820 select GPIOLIB_IRQCHIP
822 Say yes here to enable the max732x to be used as an interrupt
823 controller. It requires the driver to be built in the kernel.
825 config GPIO_MC9S08DZ60
826 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
827 depends on I2C=y && MACH_MX35_3DS
829 Select this to enable the MC9S08DZ60 GPIO driver
832 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
834 Say yes here to provide access to several register-oriented
835 SMBus I/O expanders, made mostly by NXP or TI. Compatible
838 4 bits: pca9536, pca9537
840 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
841 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
843 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
848 40 bits: pca9505, pca9698
850 config GPIO_PCA953X_IRQ
851 bool "Interrupt controller support for PCA953x"
852 depends on GPIO_PCA953X=y
853 select GPIOLIB_IRQCHIP
855 Say yes here to enable the pca953x to be used as an interrupt
856 controller. It requires the driver to be built in the kernel.
859 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
860 select GPIOLIB_IRQCHIP
863 Say yes here to provide access to most "quasi-bidirectional" I2C
864 GPIO expanders used for additional digital outputs or inputs.
865 Most of these parts are from NXP, though TI is a second source for
866 some of them. Compatible models include:
868 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
869 pca9670, pca9672, pca9674, pca9674a,
872 16 bits: pcf8575, pcf8575c, pca8575,
873 pca9671, pca9673, pca9675
875 Your board setup code will need to declare the expanders in
876 use, and assign numbers to the GPIOs they expose. Those GPIOs
877 can then be used from drivers and other kernel code, just like
878 other GPIOs, but only accessible from task contexts.
880 This driver provides an in-kernel interface to those GPIOs using
881 platform-neutral GPIO calls.
884 tristate "TPIC2810 8-Bit I2C GPO expander"
886 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
888 To compile this driver as a module, choose M here: the module will
889 be called gpio-tpic2810.
892 tristate "Technologic Systems FPGA I2C GPIO"
893 depends on SOC_IMX6 || COMPILE_TEST
896 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
897 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
901 menu "MFD GPIO expanders"
904 tristate "GPIO Support for ADP5520 PMIC"
905 depends on PMIC_ADP5520
907 This option enables support for on-chip GPIO found
908 on Analog Devices ADP5520 PMICs.
910 config GPIO_ALTERA_A10SR
911 tristate "Altera Arria10 System Resource GPIO"
912 depends on MFD_ALTERA_A10SR
914 Driver for Arria10 Development Kit GPIO expansion which
915 includes reads of pushbuttons and DIP switches as well
919 tristate "Wolfson Microelectronics Arizona class devices"
920 depends on MFD_ARIZONA
922 Support for GPIOs on Wolfson Arizona class devices.
924 config GPIO_BD9571MWV
925 tristate "ROHM BD9571 GPIO support"
926 depends on MFD_BD9571MWV
928 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
929 available on the ROHM PMIC in total, both of which can also
932 This driver can also be built as a module. If so, the module
933 will be called gpio-bd9571mwv.
935 config GPIO_CRYSTAL_COVE
936 tristate "GPIO support for Crystal Cove PMIC"
937 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
938 select GPIOLIB_IRQCHIP
940 Support for GPIO pins on Crystal Cove PMIC.
942 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
945 This driver can also be built as a module. If so, the module will be
946 called gpio-crystalcove.
949 tristate "AMD CS5535/CS5536 GPIO support"
950 depends on X86 || MIPS || COMPILE_TEST
951 depends on MFD_CS5535
953 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
954 can be used for quite a number of things. The CS5535/6 is found on
955 AMD Geode and Lemote Yeeloong devices.
960 tristate "Dialog DA9052 GPIO"
961 depends on PMIC_DA9052
963 Say yes here to enable the GPIO driver for the DA9052 chip.
966 tristate "Dialog Semiconductor DA9055 GPIO"
967 depends on MFD_DA9055
969 Say yes here to enable the GPIO driver for the DA9055 chip.
971 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
972 be controller by this driver.
974 If driver is built as a module it will be called gpio-da9055.
977 tristate "Diolan DLN2 GPIO support"
979 select GPIOLIB_IRQCHIP
982 Select this option to enable GPIO driver for the Diolan DLN2
985 This driver can also be built as a module. If so, the module
986 will be called gpio-dln2.
989 bool "HTC EGPIO support"
990 depends on GPIOLIB && ARM
992 This driver supports the CPLD egpio chip present on
993 several HTC phones. It provides basic support for input
994 pins, output pins, and irqs.
997 tristate "Janz VMOD-TTL Digital IO Module"
998 depends on MFD_JANZ_CMODIO
1000 This enables support for the Janz VMOD-TTL Digital IO module.
1001 This driver provides support for driving the pins in output
1002 mode only. Input mode is not supported.
1005 tristate "Kontron ETX / COMexpress GPIO"
1006 depends on MFD_KEMPLD
1008 This enables support for the PLD GPIO interface on some Kontron ETX
1009 and COMexpress (ETXexpress) modules.
1011 This driver can also be built as a module. If so, the module will be
1015 tristate "TI/National Semiconductor LP3943 GPIO expander"
1016 depends on MFD_LP3943
1018 GPIO driver for LP3943 MFD.
1019 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1020 Open drain outputs are required for this usage.
1023 tristate "TI LP873X GPO"
1024 depends on MFD_TI_LP873X
1026 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1029 This driver can also be built as a module. If so, the module will be
1033 tristate "TI LP87565 GPIO"
1034 depends on MFD_TI_LP87565
1036 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1039 This driver can also be built as a module. If so, the module will be
1040 called gpio-lp87565.
1042 config GPIO_MAX77620
1043 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1044 depends on MFD_MAX77620
1046 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1047 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1048 driver also provides interrupt support for each of the gpios.
1049 Say yes here to enable the max77620 to be used as gpio controller.
1052 bool "Intel MSIC mixed signal gpio support"
1053 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1055 Enable support for GPIO on intel MSIC controllers found in
1059 bool "TI PALMAS series PMICs GPIO"
1060 depends on MFD_PALMAS
1062 Select this option to enable GPIO driver for the TI PALMAS
1066 bool "RICOH RC5T583 GPIO"
1067 depends on MFD_RC5T583
1069 Select this option to enable GPIO driver for the Ricoh RC5T583
1071 This driver provides the support for driving/reading the gpio pins
1072 of RC5T583 device through standard gpio library.
1076 depends on MFD_STMPE
1078 select GPIOLIB_IRQCHIP
1080 This enables support for the GPIOs found on the STMPE I/O
1084 bool "TC3589X GPIOs"
1085 depends on MFD_TC3589X
1087 select GPIOLIB_IRQCHIP
1089 This enables support for the GPIOs found on the TC3589X
1092 config GPIO_TIMBERDALE
1093 bool "Support for timberdale GPIO IP"
1094 depends on MFD_TIMBERDALE
1096 Add support for the GPIO IP in the timberdale FPGA.
1098 config GPIO_TPS65086
1099 tristate "TI TPS65086 GPO"
1100 depends on MFD_TPS65086
1102 This driver supports the GPO on TI TPS65086x PMICs.
1104 config GPIO_TPS65218
1105 tristate "TPS65218 GPIO"
1106 depends on MFD_TPS65218
1108 Select this option to enable GPIO driver for the TPS65218
1111 config GPIO_TPS6586X
1112 bool "TPS6586X GPIO"
1113 depends on MFD_TPS6586X
1115 Select this option to enable GPIO driver for the TPS6586X
1118 config GPIO_TPS65910
1119 bool "TPS65910 GPIO"
1120 depends on MFD_TPS65910
1122 Select this option to enable GPIO driver for the TPS65910
1125 config GPIO_TPS65912
1126 tristate "TI TPS65912 GPIO"
1127 depends on MFD_TPS65912
1129 This driver supports TPS65912 gpio chip
1131 config GPIO_TPS68470
1132 bool "TPS68470 GPIO"
1133 depends on MFD_TPS68470
1135 Select this option to enable GPIO driver for the TPS68470
1137 There are 7 GPIOs and few sensor related GPIOs supported
1138 by the TPS68470. While the 7 GPIOs can be configured as
1139 input or output as appropriate, the sensor related GPIOs
1140 are "output only" GPIOs.
1142 This driver config is bool, as the GPIO functionality
1143 of the TPS68470 must be available before dependent
1147 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1148 depends on TWL4030_CORE
1150 Say yes here to access the GPIO signals of various multi-function
1151 power management chips from Texas Instruments.
1154 tristate "TWL6040 GPO"
1155 depends on TWL6040_CORE
1157 Say yes here to access the GPO signals of twl6040
1158 audio chip from Texas Instruments.
1161 tristate "Philips UCB1400 GPIO"
1162 depends on UCB1400_CORE
1164 This enables support for the Philips UCB1400 GPIO pins.
1165 The UCB1400 is an AC97 audio codec.
1167 config GPIO_WHISKEY_COVE
1168 tristate "GPIO support for Whiskey Cove PMIC"
1169 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1170 select GPIOLIB_IRQCHIP
1172 Support for GPIO pins on Whiskey Cove PMIC.
1174 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1177 This driver can also be built as a module. If so, the module will be
1181 tristate "WM831x GPIOs"
1182 depends on MFD_WM831X
1184 Say yes here to access the GPIO signals of WM831x power management
1185 chips from Wolfson Microelectronics.
1188 tristate "WM8350 GPIOs"
1189 depends on MFD_WM8350
1191 Say yes here to access the GPIO signals of WM8350 power management
1192 chips from Wolfson Microelectronics.
1195 tristate "WM8994 GPIOs"
1196 depends on MFD_WM8994
1198 Say yes here to access the GPIO signals of WM8994 audio hub
1199 CODECs from Wolfson Microelectronics.
1203 menu "PCI GPIO expanders"
1207 tristate "AMD 8111 GPIO driver"
1208 depends on X86 || COMPILE_TEST
1210 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1212 Note, that usually system firmware/ACPI handles GPIO pins on their
1213 own and users might easily break their systems with uncarefull usage
1219 tristate "BT8XX GPIO abuser"
1220 depends on VIDEO_BT848=n
1222 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1223 as a cheap PCI GPIO card.
1225 This chip can be found on Miro, Hauppauge and STB TV-cards.
1227 The card needs to be physically altered for using it as a
1228 GPIO card. For more information on how to build a GPIO card
1229 from a BT8xx TV card, see the documentation file at
1230 Documentation/bt8xxgpio.txt
1234 config GPIO_INTEL_MID
1235 bool "Intel MID GPIO support"
1236 depends on X86_INTEL_MID
1237 select GPIOLIB_IRQCHIP
1239 Say Y here to support Intel MID GPIO.
1241 config GPIO_MERRIFIELD
1242 tristate "Intel Merrifield GPIO support"
1243 depends on X86_INTEL_MID
1244 select GPIOLIB_IRQCHIP
1246 Say Y here to support Intel Merrifield GPIO.
1249 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1250 depends on X86 || COMPILE_TEST
1251 select GENERIC_IRQ_CHIP
1253 ML7213 is companion chip for Intel Atom E6xx series.
1254 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1255 Hub) which is for IVI(In-Vehicle Infotainment) use.
1256 This driver can access the IOH's GPIO device.
1259 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1260 depends on X86_32 || MIPS || COMPILE_TEST
1261 select GENERIC_IRQ_CHIP
1263 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1264 which is an IOH(Input/Output Hub) for x86 embedded processor.
1265 This driver can access PCH GPIO device.
1267 This driver also can be used for LAPIS Semiconductor IOH(Input/
1268 Output Hub), ML7223 and ML7831.
1269 ML7223 IOH is for MP(Media Phone) use.
1270 ML7831 IOH is for general purpose use.
1271 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1272 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1274 config GPIO_PCI_IDIO_16
1275 tristate "ACCES PCI-IDIO-16 GPIO support"
1276 select GPIOLIB_IRQCHIP
1278 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1279 generated when any of the inputs change state (low to high or high to
1280 low). Input filter control is not supported by this driver, and the
1281 input filters are deactivated by this driver.
1283 config GPIO_PCIE_IDIO_24
1284 tristate "ACCES PCIe-IDIO-24 GPIO support"
1285 select GPIOLIB_IRQCHIP
1287 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1288 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1289 when any of the inputs change state (low to high or high to low).
1290 Input filter control is not supported by this driver, and the input
1291 filters are deactivated by this driver.
1294 tristate "RDC R-321x GPIO support"
1298 Support for the RDC R321x SoC GPIOs over southbridge
1299 PCI configuration space.
1301 config GPIO_SODAVILLE
1302 bool "Intel Sodaville GPIO support"
1303 depends on X86 && OF
1305 select GENERIC_IRQ_CHIP
1307 Say Y here to support Intel Sodaville GPIO.
1311 menu "SPI GPIO expanders"
1312 depends on SPI_MASTER
1315 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1318 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1319 shift registers. This driver can be used to provide access
1320 to more gpio outputs.
1322 config GPIO_MAX3191X
1323 tristate "Maxim MAX3191x industrial serializer"
1326 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1327 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1328 chip to make 8 digital 24V inputs available via SPI. Supports
1329 CRC checksums to guard against electromagnetic interference,
1330 as well as undervoltage and overtemperature detection.
1333 tristate "Maxim MAX7301 GPIO expander"
1336 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1339 tristate "Freescale MC33880 high-side/low-side switch"
1341 SPI driver for Freescale MC33880 high-side/low-side switch.
1342 This provides GPIO interface supporting inputs and outputs.
1345 tristate "Generic parallel-in/serial-out shift register"
1347 GPIO driver for SPI compatible parallel-in/serial-out shift
1348 registers. These are input only devices.
1351 tristate "EXAR XRA1403 16-bit GPIO expander"
1354 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1358 menu "USB GPIO expanders"
1361 config GPIO_VIPERBOARD
1362 tristate "Viperboard GPIO a & b support"
1363 depends on MFD_VIPERBOARD
1365 Say yes here to access the GPIO signals of Nano River
1366 Technologies Viperboard. There are two GPIO chips on the
1367 board: gpioa and gpiob.
1368 See viperboard API specification and Nano
1369 River Tech's viperboard.h for detailed meaning
1370 of the module parameters.