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
203 select GPIOLIB_IRQCHIP
206 tristate "Support for GPIO pins on XR17V352/354/358"
207 depends on SERIAL_8250_EXAR
209 Selecting this option will enable handling of GPIO pins present
210 on Exar XR17V352/354/358 chips.
213 bool "GE FPGA based GPIO"
217 Support for common GPIO functionality provided on some GE Single Board
220 This driver provides basic support (configure as input or output, read
221 and write pin state) for GPIO implemented in a number of GE single
224 config GPIO_FTGPIO010
225 bool "Faraday FTGPIO010 GPIO"
228 select GPIOLIB_IRQCHIP
229 default (ARCH_GEMINI || ARCH_MOXART)
231 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
232 Cortina systems Gemini platforms, Moxa ART and others.
234 config GPIO_GENERIC_PLATFORM
235 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
238 Say yes here to support basic platform_device memory-mapped GPIO controllers.
241 tristate "Aeroflex Gaisler GRGPIO support"
246 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
247 VHDL IP core library.
250 tristate "Nintendo Wii (Hollywood) GPIO"
254 Select this to support the GPIO controller of the Nintendo Wii.
259 tristate "Intel ICH GPIO"
260 depends on PCI && X86
264 Say yes here to support the GPIO functionality of a number of Intel
265 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
266 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
267 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
272 tristate "Intel IOP GPIO"
273 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
276 Say yes here to support the GPIO functionality of a number of Intel
282 bool "Loongson-2/3 GPIO support"
283 depends on CPU_LOONGSON2 || CPU_LOONGSON3
285 driver for GPIO functionality on Loongson-2F/3A/3B processors.
288 tristate "NXP LPC18XX/43XX GPIO support"
289 default y if ARCH_LPC18XX
290 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
292 Select this option to enable GPIO driver for
293 NXP LPC18XX/43XX devices.
295 config GPIO_LYNXPOINT
296 tristate "Intel Lynxpoint GPIO support"
297 depends on ACPI && X86
298 select GPIOLIB_IRQCHIP
300 driver for GPIO functionality on Intel Lynxpoint PCH chipset
301 Requires ACPI device enumeration code to set up a platform device.
304 tristate "GPIO support for Fujitsu MB86S7x Platforms"
306 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
309 tristate "MEN 16Z127 GPIO support"
313 Say yes here to support the MEN 16Z127 GPIO Controller
315 config GPIO_MM_LANTIQ
316 bool "Lantiq Memory mapped GPIOs"
317 depends on LANTIQ && SOC_XWAY
319 This enables support for memory mapped GPIOs on the External Bus Unit
320 (EBU) found on Lantiq SoCs. The gpios are output only as they are
321 created by attaching a 16bit latch to the bus.
324 tristate "GPIO Testing Driver"
325 depends on GPIOLIB && SYSFS
327 select GPIOLIB_IRQCHIP
330 This enables GPIO Testing driver, which provides a way to test GPIO
331 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
332 must be selected for this test.
333 User could use it through the script in
334 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
339 depends on PPC_MPC52xx
342 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
343 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
344 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
349 Say Y here if you're going to use hardware that connects to the
350 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
353 bool "Mediatek MT7621 GPIO Support"
354 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
357 select GPIOLIB_IRQCHIP
359 Say yes here to support the Mediatek MT7621 SoC GPIO device
363 depends on PLAT_ORION || ARCH_MVEBU
365 select GENERIC_IRQ_CHIP
372 select GENERIC_IRQ_CHIP
378 select GENERIC_IRQ_CHIP
381 tristate "Cavium OCTEON GPIO"
382 depends on GPIOLIB && CAVIUM_OCTEON_SOC
385 Say yes here to support the on-chip GPIO lines on the OCTEON
389 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
390 default y if ARCH_OMAP
392 select GENERIC_IRQ_CHIP
393 select GPIOLIB_IRQCHIP
395 Say yes here to enable GPIO support for TI OMAP SoCs.
398 bool "PrimeCell PL061 GPIO support"
401 select GPIOLIB_IRQCHIP
403 Say yes here to support the PrimeCell PL061 GPIO device
405 config GPIO_PMIC_EIC_SPRD
406 tristate "Spreadtrum PMIC EIC support"
407 depends on MFD_SC27XX_PMIC || COMPILE_TEST
409 select GPIOLIB_IRQCHIP
411 Say yes here to support Spreadtrum PMIC EIC device.
414 bool "PXA GPIO support"
415 depends on ARCH_PXA || ARCH_MMP
417 Say yes here to support the PXA GPIO device
420 tristate "Renesas R-Car GPIO"
421 depends on ARCH_RENESAS || COMPILE_TEST
422 select GPIOLIB_IRQCHIP
424 Say yes here to support GPIO on Renesas R-Car SoCs.
429 A 32-bit single register GPIO fixed in/out implementation. This
430 can be used to represent any register as a set of GPIO signals.
433 tristate "SIOX GPIO support"
435 select GPIOLIB_IRQCHIP
437 Say yes here to support SIOX I/O devices. These are units connected
438 via a SIOX bus and have a number of fixed-direction I/O lines.
440 config GPIO_SNPS_CREG
441 bool "Synopsys GPIO via CREG (Control REGisters) driver"
442 depends on ARC || COMPILE_TEST
445 This driver supports GPIOs via CREG on various Synopsys SoCs.
446 This is a single-register MMIO GPIO driver for complex cases
447 where only several fields in register belong to GPIO lines and
448 each GPIO line owns a field with different length and on/off value.
450 config GPIO_SPEAR_SPICS
451 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
452 depends on PLAT_SPEAR
453 select GENERIC_IRQ_CHIP
455 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
458 tristate "Spreadtrum GPIO support"
459 depends on ARCH_SPRD || COMPILE_TEST
461 select GPIOLIB_IRQCHIP
463 Say yes here to support Spreadtrum GPIO device.
466 bool "STA2x11/ConneXt GPIO support"
467 depends on MFD_STA2X11
468 select GENERIC_IRQ_CHIP
470 Say yes here to support the STA2x11/ConneXt GPIO device.
471 The GPIO module has 128 GPIO pins with alternate functions.
474 bool "XWAY STP GPIOs"
477 This enables support for the Serial To Parallel (STP) unit found on
478 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
479 that can be up to 24 bit. This peripheral is aimed at driving leds.
480 Some of the gpios/leds can be auto updated by the soc with dsl and
484 tristate "GPIO based on SYSCON"
485 depends on MFD_SYSCON && OF
487 Say yes here to support GPIO functionality though SYSCON driver.
492 select GENERIC_IRQ_CHIP
496 bool "NVIDIA Tegra GPIO support"
498 depends on ARCH_TEGRA || COMPILE_TEST
501 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
504 tristate "NVIDIA Tegra186 GPIO support"
505 default ARCH_TEGRA_186_SOC
506 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
508 select GPIOLIB_IRQCHIP
510 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
513 tristate "TS-4800 DIO blocks and compatibles"
515 depends on SOC_IMX51 || COMPILE_TEST
518 This driver support TS-4800 FPGA GPIO controllers.
521 tristate "Cavium ThunderX/OCTEON-TX GPIO"
522 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
524 select IRQ_DOMAIN_HIERARCHY
525 select IRQ_FASTEOI_HIERARCHY_HANDLERS
527 Say yes here to support the on-chip GPIO lines on the ThunderX
528 and OCTEON-TX families of SoCs.
531 tristate "UniPhier GPIO support"
532 depends on ARCH_UNIPHIER || COMPILE_TEST
534 select IRQ_DOMAIN_HIERARCHY
536 Say yes here to support UniPhier GPIOs.
540 depends on ARCH_MXC && SOC_VF610
541 select GPIOLIB_IRQCHIP
543 Say yes here to support Vybrid vf610 GPIOs.
546 tristate "NEC VR4100 series General-purpose I/O Uint support"
547 depends on CPU_VR41XX
549 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
552 tristate "VIA VX855/VX875 GPIO"
553 depends on (X86 || COMPILE_TEST) && PCI
557 Support access to the VX855/VX875 GPIO lines through the gpio library.
559 This driver provides common support for accessing the device,
560 additional drivers must be enabled in order to use the
561 functionality of the device.
564 bool "APM X-Gene GPIO controller support"
565 depends on ARM64 && OF_GPIO
567 This driver is to support the GPIO block within the APM X-Gene SoC
568 platform's generic flash controller. The GPIO pins are muxed with
569 the generic flash controller's address and data pins. Say yes
570 here to enable the GFC GPIO functionality.
573 tristate "APM X-Gene GPIO standby controller support"
574 depends on ARCH_XGENE && OF_GPIO
576 select GPIOLIB_IRQCHIP
577 select IRQ_DOMAIN_HIERARCHY
579 This driver supports the GPIO block within the APM X-Gene
580 Standby Domain. Say yes here to enable the GPIO functionality.
583 tristate "Xilinx GPIO support"
586 Say yes here to support the Xilinx FPGA GPIO device
589 tristate "Netlogic XLP GPIO support"
590 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
591 select GPIOLIB_IRQCHIP
593 This driver provides support for GPIO interface on Netlogic XLP MIPS64
594 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
595 XLP9XX and XLP5XX. The same GPIO controller block is also present in
596 Cavium's ThunderX2 CN99XX SoCs.
601 bool "Xtensa GPIO32 support"
603 depends on HAVE_XTENSA_GPIO32
606 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
607 and EXPSTATE (output) ports
610 bool "LSI ZEVIO SoC memory mapped GPIOs"
611 depends on ARM && OF_GPIO
613 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
616 tristate "Xilinx Zynq GPIO support"
617 depends on ARCH_ZYNQ || ARCH_ZYNQMP
618 select GPIOLIB_IRQCHIP
620 Say yes here to support Xilinx Zynq GPIO controller.
623 bool "ZTE ZX GPIO support"
624 depends on ARCH_ZX || COMPILE_TEST
625 select GPIOLIB_IRQCHIP
627 Say yes here to support the GPIO device on ZTE ZX SoCs.
629 config GPIO_LOONGSON1
630 tristate "Loongson1 GPIO support"
631 depends on MACH_LOONGSON32
634 Say Y or M here to support GPIO on Loongson1 SoCs.
638 menu "Port-mapped I/O GPIO drivers"
639 depends on X86 # Unconditional I/O space access
641 config GPIO_104_DIO_48E
642 tristate "ACCES 104-DIO-48E GPIO support"
645 select GPIOLIB_IRQCHIP
647 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
648 104-DIO-24E). The base port addresses for the devices may be
649 configured via the base module parameter. The interrupt line numbers
650 for the devices may be configured via the irq module parameter.
652 config GPIO_104_IDIO_16
653 tristate "ACCES 104-IDIO-16 GPIO support"
656 select GPIOLIB_IRQCHIP
658 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
659 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
660 base port addresses for the devices may be configured via the base
661 module parameter. The interrupt line numbers for the devices may be
662 configured via the irq module parameter.
664 config GPIO_104_IDI_48
665 tristate "ACCES 104-IDI-48 GPIO support"
668 select GPIOLIB_IRQCHIP
670 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
671 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
672 the devices may be configured via the base module parameter. The
673 interrupt line numbers for the devices may be configured via the irq
677 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
679 This option enables support for GPIOs found on Fintek Super-I/O
680 chips F71869, F71869A, F71882FG, F71889F and F81866.
682 To compile this driver as a module, choose M here: the module will
683 be called f7188x-gpio.
686 tristate "Diamond Systems GPIO-MM GPIO support"
690 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
692 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
693 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
694 support for these 48 channels of digital I/O.
696 The base port addresses for the devices may be configured via the base
697 array module parameter.
700 tristate "IT87xx GPIO support"
702 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
704 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
705 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
708 To compile this driver as a module, choose M here: the module will
712 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
713 depends on (X86 || COMPILE_TEST) && PCI
717 Say yes here to support GPIO interface on Intel Poulsbo SCH,
718 Intel Tunnel Creek processor, Intel Centerton processor or
719 Intel Quark X1000 SoC.
721 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
722 powered by the core power rail and are turned off during sleep
723 modes (S3 and higher). The remaining four GPIOs are powered by
724 the Intel SCH suspend power supply. These GPIOs remain
725 active during S3. The suspend powered GPIOs can be used to wake the
726 system from the Suspend-to-RAM state.
728 The Intel Tunnel Creek processor has 5 GPIOs powered by the
729 core power rail and 9 from suspend power supply.
731 The Intel Centerton processor has a total of 30 GPIO pins.
732 Twenty-one are powered by the core power rail and 9 from the
733 suspend power supply.
735 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
736 power well and 6 from the suspend power well.
739 tristate "SMSC SCH311x SuperI/O GPIO"
741 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
742 SCH3116 "Super I/O" chipsets.
744 To compile this driver as a module, choose M here: the module will
745 be called gpio-sch311x.
748 tristate "TS-5500 DIO blocks and compatibles"
749 depends on TS5500 || COMPILE_TEST
751 This driver supports Digital I/O exposed by pin blocks found on some
752 Technologic Systems platforms. It includes, but is not limited to, 3
753 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
757 tristate "Winbond Super I/O GPIO support"
760 This option enables support for GPIOs found on Winbond Super I/O
762 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
765 You will need to provide a module parameter "gpios", or a
766 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
767 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
769 To compile this driver as a module, choose M here: the module will
770 be called gpio-winbond.
773 tristate "WinSystems WS16C48 GPIO support"
775 select GPIOLIB_IRQCHIP
777 Enables GPIO support for the WinSystems WS16C48. The base port
778 addresses for the devices may be configured via the base module
779 parameter. The interrupt line numbers for the devices may be
780 configured via the irq module parameter.
784 menu "I2C GPIO expanders"
788 tristate "ADP5588 I2C GPIO expander"
790 This option enables support for 18 GPIOs found
791 on Analog Devices ADP5588 GPIO Expanders.
793 config GPIO_ADP5588_IRQ
794 bool "Interrupt controller support for ADP5588"
795 depends on GPIO_ADP5588=y
797 Say yes here to enable the adp5588 to be used as an interrupt
798 controller. It requires the driver to be built in the kernel.
801 tristate "Avionic Design N-bit GPIO expander"
803 select GPIOLIB_IRQCHIP
805 This option enables support for N GPIOs found on Avionic Design
806 I2C GPIO expanders. The register space will be extended by powers
807 of two, so the controller will need to accommodate for that. For
808 example: if a controller provides 48 pins, 6 registers will be
809 enough to represent all pins, but the driver will assume a
810 register layout for 64 pins (8 registers).
813 tristate "Maxim MAX7300 GPIO expander"
816 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
819 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
821 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
822 Port Expanders. Each IO port on these chips has a fixed role of
823 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
824 Input and Output (designed by 'P'). The combinations are listed
827 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
828 max7322 (4I4O), max7323 (4P4O)
830 16 bits: max7324 (8I8O), max7325 (8P8O),
831 max7326 (4I12O), max7327 (4P12O)
833 Board setup code must specify the model to use, and the start
834 number for these GPIOs.
836 config GPIO_MAX732X_IRQ
837 bool "Interrupt controller support for MAX732x"
838 depends on GPIO_MAX732X=y
839 select GPIOLIB_IRQCHIP
841 Say yes here to enable the max732x to be used as an interrupt
842 controller. It requires the driver to be built in the kernel.
844 config GPIO_MC9S08DZ60
845 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
846 depends on I2C=y && MACH_MX35_3DS
848 Select this to enable the MC9S08DZ60 GPIO driver
851 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
853 Say yes here to provide access to several register-oriented
854 SMBus I/O expanders, made mostly by NXP or TI. Compatible
857 4 bits: pca9536, pca9537
859 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
860 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
862 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
867 40 bits: pca9505, pca9698
869 config GPIO_PCA953X_IRQ
870 bool "Interrupt controller support for PCA953x"
871 depends on GPIO_PCA953X=y
872 select GPIOLIB_IRQCHIP
874 Say yes here to enable the pca953x to be used as an interrupt
875 controller. It requires the driver to be built in the kernel.
878 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
879 select GPIOLIB_IRQCHIP
882 Say yes here to provide access to most "quasi-bidirectional" I2C
883 GPIO expanders used for additional digital outputs or inputs.
884 Most of these parts are from NXP, though TI is a second source for
885 some of them. Compatible models include:
887 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
888 pca9670, pca9672, pca9674, pca9674a,
891 16 bits: pcf8575, pcf8575c, pca8575,
892 pca9671, pca9673, pca9675
894 Your board setup code will need to declare the expanders in
895 use, and assign numbers to the GPIOs they expose. Those GPIOs
896 can then be used from drivers and other kernel code, just like
897 other GPIOs, but only accessible from task contexts.
899 This driver provides an in-kernel interface to those GPIOs using
900 platform-neutral GPIO calls.
903 tristate "TPIC2810 8-Bit I2C GPO expander"
905 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
907 To compile this driver as a module, choose M here: the module will
908 be called gpio-tpic2810.
911 tristate "Technologic Systems FPGA I2C GPIO"
912 depends on SOC_IMX6 || COMPILE_TEST
915 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
916 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
920 menu "MFD GPIO expanders"
923 tristate "GPIO Support for ADP5520 PMIC"
924 depends on PMIC_ADP5520
926 This option enables support for on-chip GPIO found
927 on Analog Devices ADP5520 PMICs.
929 config GPIO_ALTERA_A10SR
930 tristate "Altera Arria10 System Resource GPIO"
931 depends on MFD_ALTERA_A10SR
933 Driver for Arria10 Development Kit GPIO expansion which
934 includes reads of pushbuttons and DIP switches as well
938 tristate "Wolfson Microelectronics Arizona class devices"
939 depends on MFD_ARIZONA
941 Support for GPIOs on Wolfson Arizona class devices.
943 config GPIO_BD9571MWV
944 tristate "ROHM BD9571 GPIO support"
945 depends on MFD_BD9571MWV
947 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
948 available on the ROHM PMIC in total, both of which can also
951 This driver can also be built as a module. If so, the module
952 will be called gpio-bd9571mwv.
954 config GPIO_CRYSTAL_COVE
955 tristate "GPIO support for Crystal Cove PMIC"
956 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
957 select GPIOLIB_IRQCHIP
959 Support for GPIO pins on Crystal Cove PMIC.
961 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
964 This driver can also be built as a module. If so, the module will be
965 called gpio-crystalcove.
968 tristate "AMD CS5535/CS5536 GPIO support"
969 depends on X86 || MIPS || COMPILE_TEST
970 depends on MFD_CS5535
972 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
973 can be used for quite a number of things. The CS5535/6 is found on
974 AMD Geode and Lemote Yeeloong devices.
979 tristate "Dialog DA9052 GPIO"
980 depends on PMIC_DA9052
982 Say yes here to enable the GPIO driver for the DA9052 chip.
985 tristate "Dialog Semiconductor DA9055 GPIO"
986 depends on MFD_DA9055
988 Say yes here to enable the GPIO driver for the DA9055 chip.
990 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
991 be controller by this driver.
993 If driver is built as a module it will be called gpio-da9055.
996 tristate "Diolan DLN2 GPIO support"
998 select GPIOLIB_IRQCHIP
1001 Select this option to enable GPIO driver for the Diolan DLN2
1004 This driver can also be built as a module. If so, the module
1005 will be called gpio-dln2.
1008 bool "HTC EGPIO support"
1009 depends on GPIOLIB && ARM
1011 This driver supports the CPLD egpio chip present on
1012 several HTC phones. It provides basic support for input
1013 pins, output pins, and irqs.
1015 config GPIO_JANZ_TTL
1016 tristate "Janz VMOD-TTL Digital IO Module"
1017 depends on MFD_JANZ_CMODIO
1019 This enables support for the Janz VMOD-TTL Digital IO module.
1020 This driver provides support for driving the pins in output
1021 mode only. Input mode is not supported.
1024 tristate "Kontron ETX / COMexpress GPIO"
1025 depends on MFD_KEMPLD
1027 This enables support for the PLD GPIO interface on some Kontron ETX
1028 and COMexpress (ETXexpress) modules.
1030 This driver can also be built as a module. If so, the module will be
1034 tristate "TI/National Semiconductor LP3943 GPIO expander"
1035 depends on MFD_LP3943
1037 GPIO driver for LP3943 MFD.
1038 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1039 Open drain outputs are required for this usage.
1042 tristate "TI LP873X GPO"
1043 depends on MFD_TI_LP873X
1045 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1048 This driver can also be built as a module. If so, the module will be
1052 tristate "TI LP87565 GPIO"
1053 depends on MFD_TI_LP87565
1055 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1058 This driver can also be built as a module. If so, the module will be
1059 called gpio-lp87565.
1062 tristate "Cirrus Logic Madera class codecs"
1063 depends on PINCTRL_MADERA
1065 Support for GPIOs on Cirrus Logic Madera class codecs.
1067 config GPIO_MAX77620
1068 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1069 depends on MFD_MAX77620
1071 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1072 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1073 driver also provides interrupt support for each of the gpios.
1074 Say yes here to enable the max77620 to be used as gpio controller.
1077 bool "Intel MSIC mixed signal gpio support"
1078 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1080 Enable support for GPIO on intel MSIC controllers found in
1084 bool "TI PALMAS series PMICs GPIO"
1085 depends on MFD_PALMAS
1087 Select this option to enable GPIO driver for the TI PALMAS
1091 bool "RICOH RC5T583 GPIO"
1092 depends on MFD_RC5T583
1094 Select this option to enable GPIO driver for the Ricoh RC5T583
1096 This driver provides the support for driving/reading the gpio pins
1097 of RC5T583 device through standard gpio library.
1101 depends on MFD_STMPE
1103 select GPIOLIB_IRQCHIP
1105 This enables support for the GPIOs found on the STMPE I/O
1109 bool "TC3589X GPIOs"
1110 depends on MFD_TC3589X
1112 select GPIOLIB_IRQCHIP
1114 This enables support for the GPIOs found on the TC3589X
1117 config GPIO_TIMBERDALE
1118 bool "Support for timberdale GPIO IP"
1119 depends on MFD_TIMBERDALE
1121 Add support for the GPIO IP in the timberdale FPGA.
1123 config GPIO_TPS65086
1124 tristate "TI TPS65086 GPO"
1125 depends on MFD_TPS65086
1127 This driver supports the GPO on TI TPS65086x PMICs.
1129 config GPIO_TPS65218
1130 tristate "TPS65218 GPIO"
1131 depends on MFD_TPS65218
1133 Select this option to enable GPIO driver for the TPS65218
1136 config GPIO_TPS6586X
1137 bool "TPS6586X GPIO"
1138 depends on MFD_TPS6586X
1140 Select this option to enable GPIO driver for the TPS6586X
1143 config GPIO_TPS65910
1144 bool "TPS65910 GPIO"
1145 depends on MFD_TPS65910
1147 Select this option to enable GPIO driver for the TPS65910
1150 config GPIO_TPS65912
1151 tristate "TI TPS65912 GPIO"
1152 depends on MFD_TPS65912
1154 This driver supports TPS65912 gpio chip
1156 config GPIO_TPS68470
1157 bool "TPS68470 GPIO"
1158 depends on MFD_TPS68470
1160 Select this option to enable GPIO driver for the TPS68470
1162 There are 7 GPIOs and few sensor related GPIOs supported
1163 by the TPS68470. While the 7 GPIOs can be configured as
1164 input or output as appropriate, the sensor related GPIOs
1165 are "output only" GPIOs.
1167 This driver config is bool, as the GPIO functionality
1168 of the TPS68470 must be available before dependent
1172 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1173 depends on TWL4030_CORE
1175 Say yes here to access the GPIO signals of various multi-function
1176 power management chips from Texas Instruments.
1179 tristate "TWL6040 GPO"
1180 depends on TWL6040_CORE
1182 Say yes here to access the GPO signals of twl6040
1183 audio chip from Texas Instruments.
1186 tristate "Philips UCB1400 GPIO"
1187 depends on UCB1400_CORE
1189 This enables support for the Philips UCB1400 GPIO pins.
1190 The UCB1400 is an AC97 audio codec.
1192 config GPIO_WHISKEY_COVE
1193 tristate "GPIO support for Whiskey Cove PMIC"
1194 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1195 select GPIOLIB_IRQCHIP
1197 Support for GPIO pins on Whiskey Cove PMIC.
1199 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1202 This driver can also be built as a module. If so, the module will be
1206 tristate "WM831x GPIOs"
1207 depends on MFD_WM831X
1209 Say yes here to access the GPIO signals of WM831x power management
1210 chips from Wolfson Microelectronics.
1213 tristate "WM8350 GPIOs"
1214 depends on MFD_WM8350
1216 Say yes here to access the GPIO signals of WM8350 power management
1217 chips from Wolfson Microelectronics.
1220 tristate "WM8994 GPIOs"
1221 depends on MFD_WM8994
1223 Say yes here to access the GPIO signals of WM8994 audio hub
1224 CODECs from Wolfson Microelectronics.
1228 menu "PCI GPIO expanders"
1232 tristate "AMD 8111 GPIO driver"
1233 depends on X86 || COMPILE_TEST
1235 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1237 Note, that usually system firmware/ACPI handles GPIO pins on their
1238 own and users might easily break their systems with uncarefull usage
1244 tristate "BT8XX GPIO abuser"
1245 depends on VIDEO_BT848=n
1247 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1248 as a cheap PCI GPIO card.
1250 This chip can be found on Miro, Hauppauge and STB TV-cards.
1252 The card needs to be physically altered for using it as a
1253 GPIO card. For more information on how to build a GPIO card
1254 from a BT8xx TV card, see the documentation file at
1255 Documentation/bt8xxgpio.txt
1259 config GPIO_INTEL_MID
1260 bool "Intel MID GPIO support"
1261 depends on X86_INTEL_MID
1262 select GPIOLIB_IRQCHIP
1264 Say Y here to support Intel MID GPIO.
1266 config GPIO_MERRIFIELD
1267 tristate "Intel Merrifield GPIO support"
1268 depends on X86_INTEL_MID
1269 select GPIOLIB_IRQCHIP
1271 Say Y here to support Intel Merrifield GPIO.
1274 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1275 depends on X86 || COMPILE_TEST
1276 select GENERIC_IRQ_CHIP
1278 ML7213 is companion chip for Intel Atom E6xx series.
1279 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1280 Hub) which is for IVI(In-Vehicle Infotainment) use.
1281 This driver can access the IOH's GPIO device.
1284 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1285 depends on X86_32 || MIPS || COMPILE_TEST
1286 select GENERIC_IRQ_CHIP
1288 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1289 which is an IOH(Input/Output Hub) for x86 embedded processor.
1290 This driver can access PCH GPIO device.
1292 This driver also can be used for LAPIS Semiconductor IOH(Input/
1293 Output Hub), ML7223 and ML7831.
1294 ML7223 IOH is for MP(Media Phone) use.
1295 ML7831 IOH is for general purpose use.
1296 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1297 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1299 config GPIO_PCI_IDIO_16
1300 tristate "ACCES PCI-IDIO-16 GPIO support"
1301 select GPIOLIB_IRQCHIP
1303 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1304 generated when any of the inputs change state (low to high or high to
1305 low). Input filter control is not supported by this driver, and the
1306 input filters are deactivated by this driver.
1308 config GPIO_PCIE_IDIO_24
1309 tristate "ACCES PCIe-IDIO-24 GPIO support"
1310 select GPIOLIB_IRQCHIP
1312 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1313 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1314 when any of the inputs change state (low to high or high to low).
1315 Input filter control is not supported by this driver, and the input
1316 filters are deactivated by this driver.
1319 tristate "RDC R-321x GPIO support"
1323 Support for the RDC R321x SoC GPIOs over southbridge
1324 PCI configuration space.
1326 config GPIO_SODAVILLE
1327 bool "Intel Sodaville GPIO support"
1328 depends on X86 && OF
1330 select GENERIC_IRQ_CHIP
1332 Say Y here to support Intel Sodaville GPIO.
1336 menu "SPI GPIO expanders"
1337 depends on SPI_MASTER
1340 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1343 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1344 shift registers. This driver can be used to provide access
1345 to more gpio outputs.
1347 config GPIO_MAX3191X
1348 tristate "Maxim MAX3191x industrial serializer"
1351 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1352 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1353 chip to make 8 digital 24V inputs available via SPI. Supports
1354 CRC checksums to guard against electromagnetic interference,
1355 as well as undervoltage and overtemperature detection.
1358 tristate "Maxim MAX7301 GPIO expander"
1361 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1364 tristate "Freescale MC33880 high-side/low-side switch"
1366 SPI driver for Freescale MC33880 high-side/low-side switch.
1367 This provides GPIO interface supporting inputs and outputs.
1370 tristate "Generic parallel-in/serial-out shift register"
1372 GPIO driver for SPI compatible parallel-in/serial-out shift
1373 registers. These are input only devices.
1376 tristate "EXAR XRA1403 16-bit GPIO expander"
1379 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1383 menu "USB GPIO expanders"
1386 config GPIO_VIPERBOARD
1387 tristate "Viperboard GPIO a & b support"
1388 depends on MFD_VIPERBOARD
1390 Say yes here to access the GPIO signals of Nano River
1391 Technologies Viperboard. There are two GPIO chips on the
1392 board: gpioa and gpiob.
1393 See viperboard API specification and Nano
1394 River Tech's viperboard.h for detailed meaning
1395 of the module parameters.