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 "Cadence GPIO support"
167 select GPIOLIB_IRQCHIP
169 Say yes here to enable support for Cadence GPIO controller.
172 tristate "CLPS711X GPIO support"
173 depends on ARCH_CLPS711X || COMPILE_TEST
176 Say yes here to support GPIO on CLPS711X SoCs.
179 bool "TI Davinci/Keystone GPIO support"
180 default y if ARCH_DAVINCI
181 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
183 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
186 tristate "Synopsys DesignWare APB GPIO driver"
188 select GENERIC_IRQ_CHIP
190 Say Y or M here to build support for the Synopsys DesignWare APB
194 tristate "Spreadtrum EIC support"
195 depends on ARCH_SPRD || COMPILE_TEST
197 select GPIOLIB_IRQCHIP
199 Say yes here to support Spreadtrum EIC device.
202 tristate "Emma Mobile GPIO"
203 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
205 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
209 depends on ARCH_EP93XX
211 select GPIOLIB_IRQCHIP
214 tristate "Support for GPIO pins on XR17V352/354/358"
215 depends on SERIAL_8250_EXAR
217 Selecting this option will enable handling of GPIO pins present
218 on Exar XR17V352/354/358 chips.
221 bool "GE FPGA based GPIO"
225 Support for common GPIO functionality provided on some GE Single Board
228 This driver provides basic support (configure as input or output, read
229 and write pin state) for GPIO implemented in a number of GE single
232 config GPIO_FTGPIO010
233 bool "Faraday FTGPIO010 GPIO"
236 select GPIOLIB_IRQCHIP
237 default (ARCH_GEMINI || ARCH_MOXART)
239 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
240 Cortina systems Gemini platforms, Moxa ART and others.
242 config GPIO_GENERIC_PLATFORM
243 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
246 Say yes here to support basic platform_device memory-mapped GPIO controllers.
249 tristate "Aeroflex Gaisler GRGPIO support"
254 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
255 VHDL IP core library.
258 tristate "Nintendo Wii (Hollywood) GPIO"
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 "Loongson-2/3 GPIO support"
291 depends on CPU_LOONGSON2 || CPU_LOONGSON3
293 driver for GPIO functionality on Loongson-2F/3A/3B processors.
296 tristate "NXP LPC18XX/43XX GPIO support"
297 default y if ARCH_LPC18XX
298 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
299 select IRQ_DOMAIN_HIERARCHY
301 Select this option to enable GPIO driver for
302 NXP LPC18XX/43XX devices.
304 config GPIO_LYNXPOINT
305 tristate "Intel Lynxpoint GPIO support"
306 depends on ACPI && X86
307 select GPIOLIB_IRQCHIP
309 driver for GPIO functionality on Intel Lynxpoint PCH chipset
310 Requires ACPI device enumeration code to set up a platform device.
313 tristate "GPIO support for Fujitsu MB86S7x Platforms"
315 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
318 tristate "MEN 16Z127 GPIO support"
322 Say yes here to support the MEN 16Z127 GPIO Controller
324 config GPIO_MM_LANTIQ
325 bool "Lantiq Memory mapped GPIOs"
326 depends on LANTIQ && SOC_XWAY
328 This enables support for memory mapped GPIOs on the External Bus Unit
329 (EBU) found on Lantiq SoCs. The gpios are output only as they are
330 created by attaching a 16bit latch to the bus.
333 tristate "GPIO Testing Driver"
334 depends on GPIOLIB && SYSFS
336 select GPIOLIB_IRQCHIP
339 This enables GPIO Testing driver, which provides a way to test GPIO
340 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
341 must be selected for this test.
342 User could use it through the script in
343 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
348 depends on PPC_MPC52xx
351 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
352 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
353 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
358 Say Y here if you're going to use hardware that connects to the
359 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
362 bool "Mediatek MT7621 GPIO Support"
363 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
366 select GPIOLIB_IRQCHIP
368 Say yes here to support the Mediatek MT7621 SoC GPIO device
372 depends on PLAT_ORION || ARCH_MVEBU
374 select GENERIC_IRQ_CHIP
381 select GENERIC_IRQ_CHIP
387 select GENERIC_IRQ_CHIP
390 tristate "Cavium OCTEON GPIO"
391 depends on GPIOLIB && CAVIUM_OCTEON_SOC
394 Say yes here to support the on-chip GPIO lines on the OCTEON
398 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
399 default y if ARCH_OMAP
401 select GENERIC_IRQ_CHIP
402 select GPIOLIB_IRQCHIP
404 Say yes here to enable GPIO support for TI OMAP SoCs.
407 bool "PrimeCell PL061 GPIO support"
410 select GPIOLIB_IRQCHIP
412 Say yes here to support the PrimeCell PL061 GPIO device
414 config GPIO_PMIC_EIC_SPRD
415 tristate "Spreadtrum PMIC EIC support"
416 depends on MFD_SC27XX_PMIC || COMPILE_TEST
418 select GPIOLIB_IRQCHIP
420 Say yes here to support Spreadtrum PMIC EIC device.
423 bool "PXA GPIO support"
424 depends on ARCH_PXA || ARCH_MMP
426 Say yes here to support the PXA GPIO device
429 tristate "Renesas R-Car GPIO"
430 depends on ARCH_RENESAS || COMPILE_TEST
431 select GPIOLIB_IRQCHIP
433 Say yes here to support GPIO on Renesas R-Car SoCs.
438 A 32-bit single register GPIO fixed in/out implementation. This
439 can be used to represent any register as a set of GPIO signals.
441 config GPIO_SAMA5D2_PIOBU
442 tristate "SAMA5D2 PIOBU GPIO support"
443 depends on MFD_SYSCON
447 Say yes here to use the PIOBU pins as GPIOs.
449 PIOBU pins on the SAMA5D2 can be used as GPIOs.
450 The difference from regular GPIOs is that they
451 maintain their value during backup/self-refresh.
454 tristate "SIOX GPIO support"
456 select GPIOLIB_IRQCHIP
458 Say yes here to support SIOX I/O devices. These are units connected
459 via a SIOX bus and have a number of fixed-direction I/O lines.
461 config GPIO_SNPS_CREG
462 bool "Synopsys GPIO via CREG (Control REGisters) driver"
463 depends on ARC || COMPILE_TEST
466 This driver supports GPIOs via CREG on various Synopsys SoCs.
467 This is a single-register MMIO GPIO driver for complex cases
468 where only several fields in register belong to GPIO lines and
469 each GPIO line owns a field with different length and on/off value.
471 config GPIO_SPEAR_SPICS
472 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
473 depends on PLAT_SPEAR
474 select GENERIC_IRQ_CHIP
476 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
479 tristate "Spreadtrum GPIO support"
480 depends on ARCH_SPRD || COMPILE_TEST
482 select GPIOLIB_IRQCHIP
484 Say yes here to support Spreadtrum GPIO device.
487 bool "STA2x11/ConneXt GPIO support"
488 depends on MFD_STA2X11
489 select GENERIC_IRQ_CHIP
491 Say yes here to support the STA2x11/ConneXt GPIO device.
492 The GPIO module has 128 GPIO pins with alternate functions.
495 bool "XWAY STP GPIOs"
498 This enables support for the Serial To Parallel (STP) unit found on
499 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
500 that can be up to 24 bit. This peripheral is aimed at driving leds.
501 Some of the gpios/leds can be auto updated by the soc with dsl and
505 tristate "GPIO based on SYSCON"
506 depends on MFD_SYSCON && OF
508 Say yes here to support GPIO functionality though SYSCON driver.
513 select GENERIC_IRQ_CHIP
517 bool "NVIDIA Tegra GPIO support"
519 depends on ARCH_TEGRA || COMPILE_TEST
522 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
525 tristate "NVIDIA Tegra186 GPIO support"
526 default ARCH_TEGRA_186_SOC
527 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
529 select GPIOLIB_IRQCHIP
531 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
534 tristate "TS-4800 DIO blocks and compatibles"
536 depends on SOC_IMX51 || COMPILE_TEST
539 This driver support TS-4800 FPGA GPIO controllers.
542 tristate "Cavium ThunderX/OCTEON-TX GPIO"
543 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
545 select IRQ_DOMAIN_HIERARCHY
546 select IRQ_FASTEOI_HIERARCHY_HANDLERS
548 Say yes here to support the on-chip GPIO lines on the ThunderX
549 and OCTEON-TX families of SoCs.
552 tristate "UniPhier GPIO support"
553 depends on ARCH_UNIPHIER || COMPILE_TEST
555 select IRQ_DOMAIN_HIERARCHY
557 Say yes here to support UniPhier GPIOs.
561 depends on ARCH_MXC && SOC_VF610
562 select GPIOLIB_IRQCHIP
564 Say yes here to support Vybrid vf610 GPIOs.
567 tristate "NEC VR4100 series General-purpose I/O Uint support"
568 depends on CPU_VR41XX
570 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
573 tristate "VIA VX855/VX875 GPIO"
574 depends on (X86 || COMPILE_TEST) && PCI
578 Support access to the VX855/VX875 GPIO lines through the gpio library.
580 This driver provides common support for accessing the device,
581 additional drivers must be enabled in order to use the
582 functionality of the device.
585 bool "APM X-Gene GPIO controller support"
586 depends on ARM64 && OF_GPIO
588 This driver is to support the GPIO block within the APM X-Gene SoC
589 platform's generic flash controller. The GPIO pins are muxed with
590 the generic flash controller's address and data pins. Say yes
591 here to enable the GFC GPIO functionality.
594 tristate "APM X-Gene GPIO standby controller support"
595 depends on ARCH_XGENE && OF_GPIO
597 select GPIOLIB_IRQCHIP
598 select IRQ_DOMAIN_HIERARCHY
600 This driver supports the GPIO block within the APM X-Gene
601 Standby Domain. Say yes here to enable the GPIO functionality.
604 tristate "Xilinx GPIO support"
607 Say yes here to support the Xilinx FPGA GPIO device
610 tristate "Netlogic XLP GPIO support"
611 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
612 select GPIOLIB_IRQCHIP
614 This driver provides support for GPIO interface on Netlogic XLP MIPS64
615 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
616 XLP9XX and XLP5XX. The same GPIO controller block is also present in
617 Cavium's ThunderX2 CN99XX SoCs.
622 bool "Xtensa GPIO32 support"
624 depends on HAVE_XTENSA_GPIO32
627 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
628 and EXPSTATE (output) ports
631 bool "LSI ZEVIO SoC memory mapped GPIOs"
632 depends on ARM && OF_GPIO
634 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
637 tristate "Xilinx Zynq GPIO support"
638 depends on ARCH_ZYNQ || ARCH_ZYNQMP
639 select GPIOLIB_IRQCHIP
641 Say yes here to support Xilinx Zynq GPIO controller.
644 bool "ZTE ZX GPIO support"
645 depends on ARCH_ZX || COMPILE_TEST
646 select GPIOLIB_IRQCHIP
648 Say yes here to support the GPIO device on ZTE ZX SoCs.
650 config GPIO_LOONGSON1
651 tristate "Loongson1 GPIO support"
652 depends on MACH_LOONGSON32
655 Say Y or M here to support GPIO on Loongson1 SoCs.
659 menu "Port-mapped I/O GPIO drivers"
660 depends on X86 # Unconditional I/O space access
662 config GPIO_104_DIO_48E
663 tristate "ACCES 104-DIO-48E GPIO support"
666 select GPIOLIB_IRQCHIP
668 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
669 104-DIO-24E). The base port addresses for the devices may be
670 configured via the base module parameter. The interrupt line numbers
671 for the devices may be configured via the irq module parameter.
673 config GPIO_104_IDIO_16
674 tristate "ACCES 104-IDIO-16 GPIO support"
677 select GPIOLIB_IRQCHIP
679 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
680 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
681 base port addresses for the devices may be configured via the base
682 module parameter. The interrupt line numbers for the devices may be
683 configured via the irq module parameter.
685 config GPIO_104_IDI_48
686 tristate "ACCES 104-IDI-48 GPIO support"
689 select GPIOLIB_IRQCHIP
691 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
692 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
693 the devices may be configured via the base module parameter. The
694 interrupt line numbers for the devices may be configured via the irq
698 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
700 This option enables support for GPIOs found on Fintek Super-I/O
701 chips F71869, F71869A, F71882FG, F71889F and F81866.
703 To compile this driver as a module, choose M here: the module will
704 be called f7188x-gpio.
707 tristate "Diamond Systems GPIO-MM GPIO support"
711 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
713 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
714 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
715 support for these 48 channels of digital I/O.
717 The base port addresses for the devices may be configured via the base
718 array module parameter.
721 tristate "IT87xx GPIO support"
723 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
725 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
726 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
729 To compile this driver as a module, choose M here: the module will
733 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
734 depends on (X86 || COMPILE_TEST) && PCI
738 Say yes here to support GPIO interface on Intel Poulsbo SCH,
739 Intel Tunnel Creek processor, Intel Centerton processor or
740 Intel Quark X1000 SoC.
742 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
743 powered by the core power rail and are turned off during sleep
744 modes (S3 and higher). The remaining four GPIOs are powered by
745 the Intel SCH suspend power supply. These GPIOs remain
746 active during S3. The suspend powered GPIOs can be used to wake the
747 system from the Suspend-to-RAM state.
749 The Intel Tunnel Creek processor has 5 GPIOs powered by the
750 core power rail and 9 from suspend power supply.
752 The Intel Centerton processor has a total of 30 GPIO pins.
753 Twenty-one are powered by the core power rail and 9 from the
754 suspend power supply.
756 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
757 power well and 6 from the suspend power well.
760 tristate "SMSC SCH311x SuperI/O GPIO"
762 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
763 SCH3116 "Super I/O" chipsets.
765 To compile this driver as a module, choose M here: the module will
766 be called gpio-sch311x.
769 tristate "TS-5500 DIO blocks and compatibles"
770 depends on TS5500 || COMPILE_TEST
772 This driver supports Digital I/O exposed by pin blocks found on some
773 Technologic Systems platforms. It includes, but is not limited to, 3
774 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
778 tristate "Winbond Super I/O GPIO support"
781 This option enables support for GPIOs found on Winbond Super I/O
783 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
786 You will need to provide a module parameter "gpios", or a
787 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
788 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
790 To compile this driver as a module, choose M here: the module will
791 be called gpio-winbond.
794 tristate "WinSystems WS16C48 GPIO support"
796 select GPIOLIB_IRQCHIP
798 Enables GPIO support for the WinSystems WS16C48. The base port
799 addresses for the devices may be configured via the base module
800 parameter. The interrupt line numbers for the devices may be
801 configured via the irq module parameter.
805 menu "I2C GPIO expanders"
809 tristate "ADP5588 I2C GPIO expander"
811 This option enables support for 18 GPIOs found
812 on Analog Devices ADP5588 GPIO Expanders.
814 config GPIO_ADP5588_IRQ
815 bool "Interrupt controller support for ADP5588"
816 depends on GPIO_ADP5588=y
818 Say yes here to enable the adp5588 to be used as an interrupt
819 controller. It requires the driver to be built in the kernel.
822 tristate "Avionic Design N-bit GPIO expander"
824 select GPIOLIB_IRQCHIP
826 This option enables support for N GPIOs found on Avionic Design
827 I2C GPIO expanders. The register space will be extended by powers
828 of two, so the controller will need to accommodate for that. For
829 example: if a controller provides 48 pins, 6 registers will be
830 enough to represent all pins, but the driver will assume a
831 register layout for 64 pins (8 registers).
834 tristate "Maxim MAX7300 GPIO expander"
837 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
840 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
842 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
843 Port Expanders. Each IO port on these chips has a fixed role of
844 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
845 Input and Output (designed by 'P'). The combinations are listed
848 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
849 max7322 (4I4O), max7323 (4P4O)
851 16 bits: max7324 (8I8O), max7325 (8P8O),
852 max7326 (4I12O), max7327 (4P12O)
854 Board setup code must specify the model to use, and the start
855 number for these GPIOs.
857 config GPIO_MAX732X_IRQ
858 bool "Interrupt controller support for MAX732x"
859 depends on GPIO_MAX732X=y
860 select GPIOLIB_IRQCHIP
862 Say yes here to enable the max732x to be used as an interrupt
863 controller. It requires the driver to be built in the kernel.
865 config GPIO_MC9S08DZ60
866 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
867 depends on I2C=y && MACH_MX35_3DS
869 Select this to enable the MC9S08DZ60 GPIO driver
872 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
875 Say yes here to provide access to several register-oriented
876 SMBus I/O expanders, made mostly by NXP or TI. Compatible
879 4 bits: pca9536, pca9537
881 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
882 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
884 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
889 40 bits: pca9505, pca9698
891 config GPIO_PCA953X_IRQ
892 bool "Interrupt controller support for PCA953x"
893 depends on GPIO_PCA953X=y
894 select GPIOLIB_IRQCHIP
896 Say yes here to enable the pca953x to be used as an interrupt
897 controller. It requires the driver to be built in the kernel.
900 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
901 select GPIOLIB_IRQCHIP
904 Say yes here to provide access to most "quasi-bidirectional" I2C
905 GPIO expanders used for additional digital outputs or inputs.
906 Most of these parts are from NXP, though TI is a second source for
907 some of them. Compatible models include:
909 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
910 pca9670, pca9672, pca9674, pca9674a,
913 16 bits: pcf8575, pcf8575c, pca8575,
914 pca9671, pca9673, pca9675
916 Your board setup code will need to declare the expanders in
917 use, and assign numbers to the GPIOs they expose. Those GPIOs
918 can then be used from drivers and other kernel code, just like
919 other GPIOs, but only accessible from task contexts.
921 This driver provides an in-kernel interface to those GPIOs using
922 platform-neutral GPIO calls.
925 tristate "TPIC2810 8-Bit I2C GPO expander"
927 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
929 To compile this driver as a module, choose M here: the module will
930 be called gpio-tpic2810.
933 tristate "Technologic Systems FPGA I2C GPIO"
934 depends on SOC_IMX6 || COMPILE_TEST
937 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
938 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
942 menu "MFD GPIO expanders"
945 tristate "GPIO Support for ADP5520 PMIC"
946 depends on PMIC_ADP5520
948 This option enables support for on-chip GPIO found
949 on Analog Devices ADP5520 PMICs.
951 config GPIO_ALTERA_A10SR
952 tristate "Altera Arria10 System Resource GPIO"
953 depends on MFD_ALTERA_A10SR
955 Driver for Arria10 Development Kit GPIO expansion which
956 includes reads of pushbuttons and DIP switches as well
960 tristate "Wolfson Microelectronics Arizona class devices"
961 depends on MFD_ARIZONA
963 Support for GPIOs on Wolfson Arizona class devices.
965 config GPIO_BD9571MWV
966 tristate "ROHM BD9571 GPIO support"
967 depends on MFD_BD9571MWV
969 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
970 available on the ROHM PMIC in total, both of which can also
973 This driver can also be built as a module. If so, the module
974 will be called gpio-bd9571mwv.
976 config GPIO_CRYSTAL_COVE
977 tristate "GPIO support for Crystal Cove PMIC"
978 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
979 select GPIOLIB_IRQCHIP
981 Support for GPIO pins on Crystal Cove PMIC.
983 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
986 This driver can also be built as a module. If so, the module will be
987 called gpio-crystalcove.
990 tristate "AMD CS5535/CS5536 GPIO support"
991 depends on X86 || MIPS || COMPILE_TEST
992 depends on MFD_CS5535
994 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
995 can be used for quite a number of things. The CS5535/6 is found on
996 AMD Geode and Lemote Yeeloong devices.
1001 tristate "Dialog DA9052 GPIO"
1002 depends on PMIC_DA9052
1004 Say yes here to enable the GPIO driver for the DA9052 chip.
1007 tristate "Dialog Semiconductor DA9055 GPIO"
1008 depends on MFD_DA9055
1010 Say yes here to enable the GPIO driver for the DA9055 chip.
1012 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1013 be controller by this driver.
1015 If driver is built as a module it will be called gpio-da9055.
1018 tristate "Diolan DLN2 GPIO support"
1020 select GPIOLIB_IRQCHIP
1023 Select this option to enable GPIO driver for the Diolan DLN2
1026 This driver can also be built as a module. If so, the module
1027 will be called gpio-dln2.
1030 bool "HTC EGPIO support"
1031 depends on GPIOLIB && ARM
1033 This driver supports the CPLD egpio chip present on
1034 several HTC phones. It provides basic support for input
1035 pins, output pins, and irqs.
1037 config GPIO_JANZ_TTL
1038 tristate "Janz VMOD-TTL Digital IO Module"
1039 depends on MFD_JANZ_CMODIO
1041 This enables support for the Janz VMOD-TTL Digital IO module.
1042 This driver provides support for driving the pins in output
1043 mode only. Input mode is not supported.
1046 tristate "Kontron ETX / COMexpress GPIO"
1047 depends on MFD_KEMPLD
1049 This enables support for the PLD GPIO interface on some Kontron ETX
1050 and COMexpress (ETXexpress) modules.
1052 This driver can also be built as a module. If so, the module will be
1056 tristate "TI/National Semiconductor LP3943 GPIO expander"
1057 depends on MFD_LP3943
1059 GPIO driver for LP3943 MFD.
1060 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1061 Open drain outputs are required for this usage.
1064 tristate "TI LP873X GPO"
1065 depends on MFD_TI_LP873X
1067 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1070 This driver can also be built as a module. If so, the module will be
1074 tristate "TI LP87565 GPIO"
1075 depends on MFD_TI_LP87565
1077 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1080 This driver can also be built as a module. If so, the module will be
1081 called gpio-lp87565.
1084 tristate "Cirrus Logic Madera class codecs"
1085 depends on PINCTRL_MADERA
1087 Support for GPIOs on Cirrus Logic Madera class codecs.
1089 config GPIO_MAX77620
1090 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1091 depends on MFD_MAX77620
1093 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1094 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1095 driver also provides interrupt support for each of the gpios.
1096 Say yes here to enable the max77620 to be used as gpio controller.
1099 bool "Intel MSIC mixed signal gpio support"
1100 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1102 Enable support for GPIO on intel MSIC controllers found in
1106 bool "TI PALMAS series PMICs GPIO"
1107 depends on MFD_PALMAS
1109 Select this option to enable GPIO driver for the TI PALMAS
1113 bool "RICOH RC5T583 GPIO"
1114 depends on MFD_RC5T583
1116 Select this option to enable GPIO driver for the Ricoh RC5T583
1118 This driver provides the support for driving/reading the gpio pins
1119 of RC5T583 device through standard gpio library.
1123 depends on MFD_STMPE
1125 select GPIOLIB_IRQCHIP
1127 This enables support for the GPIOs found on the STMPE I/O
1131 bool "TC3589X GPIOs"
1132 depends on MFD_TC3589X
1134 select GPIOLIB_IRQCHIP
1136 This enables support for the GPIOs found on the TC3589X
1139 config GPIO_TIMBERDALE
1140 bool "Support for timberdale GPIO IP"
1141 depends on MFD_TIMBERDALE
1143 Add support for the GPIO IP in the timberdale FPGA.
1145 config GPIO_TPS65086
1146 tristate "TI TPS65086 GPO"
1147 depends on MFD_TPS65086
1149 This driver supports the GPO on TI TPS65086x PMICs.
1151 config GPIO_TPS65218
1152 tristate "TPS65218 GPIO"
1153 depends on MFD_TPS65218
1155 Select this option to enable GPIO driver for the TPS65218
1158 config GPIO_TPS6586X
1159 bool "TPS6586X GPIO"
1160 depends on MFD_TPS6586X
1162 Select this option to enable GPIO driver for the TPS6586X
1165 config GPIO_TPS65910
1166 bool "TPS65910 GPIO"
1167 depends on MFD_TPS65910
1169 Select this option to enable GPIO driver for the TPS65910
1172 config GPIO_TPS65912
1173 tristate "TI TPS65912 GPIO"
1174 depends on MFD_TPS65912
1176 This driver supports TPS65912 gpio chip
1178 config GPIO_TPS68470
1179 bool "TPS68470 GPIO"
1180 depends on MFD_TPS68470
1182 Select this option to enable GPIO driver for the TPS68470
1184 There are 7 GPIOs and few sensor related GPIOs supported
1185 by the TPS68470. While the 7 GPIOs can be configured as
1186 input or output as appropriate, the sensor related GPIOs
1187 are "output only" GPIOs.
1189 This driver config is bool, as the GPIO functionality
1190 of the TPS68470 must be available before dependent
1194 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1195 depends on TWL4030_CORE
1197 Say yes here to access the GPIO signals of various multi-function
1198 power management chips from Texas Instruments.
1201 tristate "TWL6040 GPO"
1202 depends on TWL6040_CORE
1204 Say yes here to access the GPO signals of twl6040
1205 audio chip from Texas Instruments.
1208 tristate "Philips UCB1400 GPIO"
1209 depends on UCB1400_CORE
1211 This enables support for the Philips UCB1400 GPIO pins.
1212 The UCB1400 is an AC97 audio codec.
1214 config GPIO_WHISKEY_COVE
1215 tristate "GPIO support for Whiskey Cove PMIC"
1216 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1217 select GPIOLIB_IRQCHIP
1219 Support for GPIO pins on Whiskey Cove PMIC.
1221 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1224 This driver can also be built as a module. If so, the module will be
1228 tristate "WM831x GPIOs"
1229 depends on MFD_WM831X
1231 Say yes here to access the GPIO signals of WM831x power management
1232 chips from Wolfson Microelectronics.
1235 tristate "WM8350 GPIOs"
1236 depends on MFD_WM8350
1238 Say yes here to access the GPIO signals of WM8350 power management
1239 chips from Wolfson Microelectronics.
1242 tristate "WM8994 GPIOs"
1243 depends on MFD_WM8994
1245 Say yes here to access the GPIO signals of WM8994 audio hub
1246 CODECs from Wolfson Microelectronics.
1250 menu "PCI GPIO expanders"
1254 tristate "AMD 8111 GPIO driver"
1255 depends on X86 || COMPILE_TEST
1257 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1259 Note, that usually system firmware/ACPI handles GPIO pins on their
1260 own and users might easily break their systems with uncarefull usage
1266 tristate "BT8XX GPIO abuser"
1267 depends on VIDEO_BT848=n
1269 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1270 as a cheap PCI GPIO card.
1272 This chip can be found on Miro, Hauppauge and STB TV-cards.
1274 The card needs to be physically altered for using it as a
1275 GPIO card. For more information on how to build a GPIO card
1276 from a BT8xx TV card, see the documentation file at
1277 Documentation/bt8xxgpio.txt
1281 config GPIO_INTEL_MID
1282 bool "Intel MID GPIO support"
1283 depends on X86_INTEL_MID
1284 select GPIOLIB_IRQCHIP
1286 Say Y here to support Intel MID GPIO.
1288 config GPIO_MERRIFIELD
1289 tristate "Intel Merrifield GPIO support"
1290 depends on X86_INTEL_MID
1291 select GPIOLIB_IRQCHIP
1293 Say Y here to support Intel Merrifield GPIO.
1296 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1297 depends on X86 || COMPILE_TEST
1298 select GENERIC_IRQ_CHIP
1300 ML7213 is companion chip for Intel Atom E6xx series.
1301 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1302 Hub) which is for IVI(In-Vehicle Infotainment) use.
1303 This driver can access the IOH's GPIO device.
1306 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1307 depends on X86_32 || MIPS || COMPILE_TEST
1308 select GENERIC_IRQ_CHIP
1310 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1311 which is an IOH(Input/Output Hub) for x86 embedded processor.
1312 This driver can access PCH GPIO device.
1314 This driver also can be used for LAPIS Semiconductor IOH(Input/
1315 Output Hub), ML7223 and ML7831.
1316 ML7223 IOH is for MP(Media Phone) use.
1317 ML7831 IOH is for general purpose use.
1318 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1319 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1321 config GPIO_PCI_IDIO_16
1322 tristate "ACCES PCI-IDIO-16 GPIO support"
1323 select GPIOLIB_IRQCHIP
1325 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1326 generated when any of the inputs change state (low to high or high to
1327 low). Input filter control is not supported by this driver, and the
1328 input filters are deactivated by this driver.
1330 config GPIO_PCIE_IDIO_24
1331 tristate "ACCES PCIe-IDIO-24 GPIO support"
1332 select GPIOLIB_IRQCHIP
1334 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1335 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1336 when any of the inputs change state (low to high or high to low).
1337 Input filter control is not supported by this driver, and the input
1338 filters are deactivated by this driver.
1341 tristate "RDC R-321x GPIO support"
1345 Support for the RDC R321x SoC GPIOs over southbridge
1346 PCI configuration space.
1348 config GPIO_SODAVILLE
1349 bool "Intel Sodaville GPIO support"
1350 depends on X86 && OF
1352 select GENERIC_IRQ_CHIP
1354 Say Y here to support Intel Sodaville GPIO.
1358 menu "SPI GPIO expanders"
1359 depends on SPI_MASTER
1362 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1365 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1366 shift registers. This driver can be used to provide access
1367 to more gpio outputs.
1369 config GPIO_MAX3191X
1370 tristate "Maxim MAX3191x industrial serializer"
1373 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1374 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1375 chip to make 8 digital 24V inputs available via SPI. Supports
1376 CRC checksums to guard against electromagnetic interference,
1377 as well as undervoltage and overtemperature detection.
1380 tristate "Maxim MAX7301 GPIO expander"
1383 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1386 tristate "Freescale MC33880 high-side/low-side switch"
1388 SPI driver for Freescale MC33880 high-side/low-side switch.
1389 This provides GPIO interface supporting inputs and outputs.
1392 tristate "Generic parallel-in/serial-out shift register"
1394 GPIO driver for SPI compatible parallel-in/serial-out shift
1395 registers. These are input only devices.
1398 tristate "EXAR XRA1403 16-bit GPIO expander"
1401 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1405 menu "USB GPIO expanders"
1408 config GPIO_VIPERBOARD
1409 tristate "Viperboard GPIO a & b support"
1410 depends on MFD_VIPERBOARD
1412 Say yes here to access the GPIO signals of Nano River
1413 Technologies Viperboard. There are two GPIO chips on the
1414 board: gpioa and gpiob.
1415 See viperboard API specification and Nano
1416 River Tech's viperboard.h for detailed meaning
1417 of the module parameters.