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.
34 config GPIOLIB_IRQCHIP
39 bool "Debug GPIO calls"
40 depends on DEBUG_KERNEL
42 Say Y here to add some extra checks and diagnostics to GPIO calls.
43 These checks help ensure that GPIOs have been properly initialized
44 before they are used, and that sleeping calls are not made from
45 non-sleeping contexts. They can make bitbanged serial protocols
46 slower. The diagnostics help catch the type of setup errors
47 that are most common when setting up new platforms or boards.
50 bool "/sys/class/gpio/... (sysfs interface)"
53 Say Y here to add a sysfs interface for GPIOs.
55 This is mostly useful to work around omissions in a system's
56 kernel support. Those are common in custom and semicustom
57 hardware assembled using standard kernels with a minimum of
58 custom patches. In those cases, userspace code may import
59 a given GPIO from the kernel, if no kernel driver requested it.
61 Kernel drivers may also request that a particular GPIO be
62 exported to userspace; this can be useful when debugging.
65 depends on HAS_IOMEM # Only for IOMEM drivers
68 # put drivers in the right section, in alphabetical order
70 # This symbol is selected by both I2C and SPI expanders
74 menu "Memory mapped GPIO drivers"
78 tristate "GPIO driver for 74xx-ICs with MMIO access"
82 Say yes here to support GPIO functionality for 74xx-compatible ICs
83 with MMIO access. Compatible models include:
84 1 bit: 741G125 (Input), 741G74 (Output)
85 2 bits: 742G125 (Input), 7474 (Output)
86 4 bits: 74125 (Input), 74175 (Output)
87 6 bits: 74365 (Input), 74174 (Output)
88 8 bits: 74244 (Input), 74273 (Output)
89 16 bits: 741624 (Input), 7416374 (Output)
92 tristate "Altera GPIO"
94 select GPIOLIB_IRQCHIP
96 Say Y or M here to build support for the Altera PIO device.
98 If driver is built as a module it will be called gpio-altera.
101 tristate "AMD Promontory GPIO support"
105 driver for GPIO functionality on Promontory IOHub
106 Require ACPI ASL code to enumerate as a platform device.
109 tristate "Aspeed GPIO support"
110 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
111 select GPIOLIB_IRQCHIP
113 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
116 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
118 depends on ATH79 || COMPILE_TEST
120 select GPIOLIB_IRQCHIP
122 Select this option to enable GPIO driver for
123 Atheros AR71XX/AR724X/AR913X SoC devices.
125 config GPIO_RASPBERRYPI_EXP
126 tristate "Raspberry Pi 3 GPIO Expander"
127 default RASPBERRYPI_FIRMWARE
129 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || COMPILE_TEST
131 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
132 the firmware mailbox to communicate with VideoCore on BCM283x chips.
135 bool "Broadcom Kona GPIO"
136 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
138 Turn on GPIO support for Broadcom "Kona" chips.
141 tristate "BRCMSTB GPIO support"
142 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
143 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
147 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
150 tristate "CLPS711X GPIO support"
151 depends on ARCH_CLPS711X || COMPILE_TEST
154 Say yes here to support GPIO on CLPS711X SoCs.
157 bool "TI Davinci/Keystone GPIO support"
158 default y if ARCH_DAVINCI
159 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
161 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
164 tristate "Synopsys DesignWare APB GPIO driver"
166 select GENERIC_IRQ_CHIP
168 Say Y or M here to build support for the Synopsys DesignWare APB
172 tristate "Emma Mobile GPIO"
173 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
175 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
179 depends on ARCH_EP93XX
183 bool "Axis ETRAX FS General I/O"
184 depends on CRIS || COMPILE_TEST
187 select GPIOLIB_IRQCHIP
189 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
192 tristate "Support for GPIO pins on XR17V352/354/358"
193 depends on SERIAL_8250_EXAR
195 Selecting this option will enable handling of GPIO pins present
196 on Exar XR17V352/354/358 chips.
199 bool "GE FPGA based GPIO"
203 Support for common GPIO functionality provided on some GE Single Board
206 This driver provides basic support (configure as input or output, read
207 and write pin state) for GPIO implemented in a number of GE single
210 config GPIO_FTGPIO010
211 bool "Faraday FTGPIO010 GPIO"
214 select GPIOLIB_IRQCHIP
215 default (ARCH_GEMINI || ARCH_MOXART)
217 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
218 Cortina systems Gemini platforms, Moxa ART and others.
220 config GPIO_GENERIC_PLATFORM
221 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
224 Say yes here to support basic platform_device memory-mapped GPIO controllers.
227 tristate "Aeroflex Gaisler GRGPIO support"
232 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
233 VHDL IP core library.
236 tristate "Nintendo Wii (Hollywood) GPIO"
240 Select this to support the GPIO controller of the Nintendo Wii.
245 tristate "Intel ICH GPIO"
246 depends on PCI && X86
250 Say yes here to support the GPIO functionality of a number of Intel
251 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
252 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
253 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
258 tristate "Ingenic JZ47xx SoCs GPIO support"
260 depends on MACH_INGENIC || COMPILE_TEST
261 select GPIOLIB_IRQCHIP
263 Say yes here to support the GPIO functionality present on the
264 JZ4740 and JZ4780 SoCs from Ingenic.
269 tristate "Intel IOP GPIO"
270 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
273 Say yes here to support the GPIO functionality of a number of Intel
279 bool "Loongson-2/3 GPIO support"
280 depends on CPU_LOONGSON2 || CPU_LOONGSON3
282 driver for GPIO functionality on Loongson-2F/3A/3B processors.
285 tristate "NXP LPC18XX/43XX GPIO support"
286 default y if ARCH_LPC18XX
287 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
289 Select this option to enable GPIO driver for
290 NXP LPC18XX/43XX devices.
292 config GPIO_LYNXPOINT
293 tristate "Intel Lynxpoint GPIO support"
294 depends on ACPI && X86
295 select GPIOLIB_IRQCHIP
297 driver for GPIO functionality on Intel Lynxpoint PCH chipset
298 Requires ACPI device enumeration code to set up a platform device.
301 tristate "GPIO support for Fujitsu MB86S7x Platforms"
303 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
306 tristate "MEN 16Z127 GPIO support"
310 Say yes here to support the MEN 16Z127 GPIO Controller
312 config GPIO_MM_LANTIQ
313 bool "Lantiq Memory mapped GPIOs"
314 depends on LANTIQ && SOC_XWAY
316 This enables support for memory mapped GPIOs on the External Bus Unit
317 (EBU) found on Lantiq SoCs. The gpios are output only as they are
318 created by attaching a 16bit latch to the bus.
321 tristate "GPIO Testing Driver"
322 depends on GPIOLIB && SYSFS
324 select GPIOLIB_IRQCHIP
327 This enables GPIO Testing driver, which provides a way to test GPIO
328 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
329 must be selected for this test.
330 User could use it through the script in
331 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
336 depends on PPC_MPC52xx
339 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
340 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
341 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
346 Say Y here if you're going to use hardware that connects to the
347 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
351 depends on PLAT_ORION || ARCH_MVEBU
353 select GENERIC_IRQ_CHIP
360 select GENERIC_IRQ_CHIP
366 select GENERIC_IRQ_CHIP
369 tristate "Cavium OCTEON GPIO"
370 depends on GPIOLIB && CAVIUM_OCTEON_SOC
373 Say yes here to support the on-chip GPIO lines on the OCTEON
377 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
378 default y if ARCH_OMAP
380 select GENERIC_IRQ_CHIP
381 select GPIOLIB_IRQCHIP
383 Say yes here to enable GPIO support for TI OMAP SoCs.
386 bool "PrimeCell PL061 GPIO support"
389 select GPIOLIB_IRQCHIP
391 Say yes here to support the PrimeCell PL061 GPIO device
394 bool "PXA GPIO support"
395 depends on ARCH_PXA || ARCH_MMP
397 Say yes here to support the PXA GPIO device
400 tristate "Renesas R-Car GPIO"
401 depends on ARCH_RENESAS || COMPILE_TEST
402 select GPIOLIB_IRQCHIP
404 Say yes here to support GPIO on Renesas R-Car SoCs.
409 A 32-bit single register GPIO fixed in/out implementation. This
410 can be used to represent any register as a set of GPIO signals.
412 config GPIO_SPEAR_SPICS
413 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
414 depends on PLAT_SPEAR
415 select GENERIC_IRQ_CHIP
417 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
420 bool "STA2x11/ConneXt GPIO support"
421 depends on MFD_STA2X11
422 select GENERIC_IRQ_CHIP
424 Say yes here to support the STA2x11/ConneXt GPIO device.
425 The GPIO module has 128 GPIO pins with alternate functions.
428 bool "XWAY STP GPIOs"
431 This enables support for the Serial To Parallel (STP) unit found on
432 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
433 that can be up to 24 bit. This peripheral is aimed at driving leds.
434 Some of the gpios/leds can be auto updated by the soc with dsl and
438 tristate "GPIO based on SYSCON"
439 depends on MFD_SYSCON && OF
441 Say yes here to support GPIO functionality though SYSCON driver.
445 select GENERIC_IRQ_CHIP
449 bool "NVIDIA Tegra GPIO support"
451 depends on ARCH_TEGRA || COMPILE_TEST
454 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
457 tristate "NVIDIA Tegra186 GPIO support"
458 default ARCH_TEGRA_186_SOC
459 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
461 select GPIOLIB_IRQCHIP
463 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
466 tristate "TS-4800 DIO blocks and compatibles"
468 depends on SOC_IMX51 || COMPILE_TEST
471 This driver support TS-4800 FPGA GPIO controllers.
474 tristate "Cavium ThunderX/OCTEON-TX GPIO"
475 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
477 select IRQ_DOMAIN_HIERARCHY
478 select IRQ_FASTEOI_HIERARCHY_HANDLERS
480 Say yes here to support the on-chip GPIO lines on the ThunderX
481 and OCTEON-TX families of SoCs.
484 bool "Toumaz Xenif TZ1090 GPIO support"
485 depends on SOC_TZ1090
486 select GENERIC_IRQ_CHIP
489 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
491 config GPIO_TZ1090_PDC
492 bool "Toumaz Xenif TZ1090 PDC GPIO support"
493 depends on SOC_TZ1090
496 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
499 tristate "UniPhier GPIO support"
500 depends on ARCH_UNIPHIER || COMPILE_TEST
502 select IRQ_DOMAIN_HIERARCHY
504 Say yes here to support UniPhier GPIOs.
508 depends on ARCH_MXC && SOC_VF610
509 select GPIOLIB_IRQCHIP
511 Say yes here to support Vybrid vf610 GPIOs.
514 tristate "NEC VR4100 series General-purpose I/O Uint support"
515 depends on CPU_VR41XX
517 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
520 tristate "VIA VX855/VX875 GPIO"
521 depends on (X86 || COMPILE_TEST) && PCI
525 Support access to the VX855/VX875 GPIO lines through the gpio library.
527 This driver provides common support for accessing the device,
528 additional drivers must be enabled in order to use the
529 functionality of the device.
532 bool "APM X-Gene GPIO controller support"
533 depends on ARM64 && OF_GPIO
535 This driver is to support the GPIO block within the APM X-Gene SoC
536 platform's generic flash controller. The GPIO pins are muxed with
537 the generic flash controller's address and data pins. Say yes
538 here to enable the GFC GPIO functionality.
541 tristate "APM X-Gene GPIO standby controller support"
542 depends on ARCH_XGENE && OF_GPIO
544 select GPIOLIB_IRQCHIP
545 select IRQ_DOMAIN_HIERARCHY
547 This driver supports the GPIO block within the APM X-Gene
548 Standby Domain. Say yes here to enable the GPIO functionality.
551 tristate "Xilinx GPIO support"
554 Say yes here to support the Xilinx FPGA GPIO device
557 tristate "Netlogic XLP GPIO support"
558 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
559 select GPIOLIB_IRQCHIP
561 This driver provides support for GPIO interface on Netlogic XLP MIPS64
562 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
563 XLP9XX and XLP5XX. The same GPIO controller block is also present in
564 Cavium's ThunderX2 CN99XX SoCs.
569 bool "Xtensa GPIO32 support"
571 depends on HAVE_XTENSA_GPIO32
574 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
575 and EXPSTATE (output) ports
578 bool "LSI ZEVIO SoC memory mapped GPIOs"
579 depends on ARM && OF_GPIO
581 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
584 tristate "Xilinx Zynq GPIO support"
585 depends on ARCH_ZYNQ || ARCH_ZYNQMP
586 select GPIOLIB_IRQCHIP
588 Say yes here to support Xilinx Zynq GPIO controller.
591 bool "ZTE ZX GPIO support"
592 depends on ARCH_ZX || COMPILE_TEST
593 select GPIOLIB_IRQCHIP
595 Say yes here to support the GPIO device on ZTE ZX SoCs.
597 config GPIO_LOONGSON1
598 tristate "Loongson1 GPIO support"
599 depends on MACH_LOONGSON32
602 Say Y or M here to support GPIO on Loongson1 SoCs.
606 menu "Port-mapped I/O GPIO drivers"
607 depends on X86 # Unconditional I/O space access
609 config GPIO_104_DIO_48E
610 tristate "ACCES 104-DIO-48E GPIO support"
613 select GPIOLIB_IRQCHIP
615 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
616 104-DIO-24E). The base port addresses for the devices may be
617 configured via the base module parameter. The interrupt line numbers
618 for the devices may be configured via the irq module parameter.
620 config GPIO_104_IDIO_16
621 tristate "ACCES 104-IDIO-16 GPIO support"
624 select GPIOLIB_IRQCHIP
626 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
627 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
628 base port addresses for the devices may be configured via the base
629 module parameter. The interrupt line numbers for the devices may be
630 configured via the irq module parameter.
632 config GPIO_104_IDI_48
633 tristate "ACCES 104-IDI-48 GPIO support"
636 select GPIOLIB_IRQCHIP
638 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
639 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
640 the devices may be configured via the base module parameter. The
641 interrupt line numbers for the devices may be configured via the irq
645 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
647 This option enables support for GPIOs found on Fintek Super-I/O
648 chips F71869, F71869A, F71882FG, F71889F and F81866.
650 To compile this driver as a module, choose M here: the module will
651 be called f7188x-gpio.
654 tristate "Diamond Systems GPIO-MM GPIO support"
658 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
660 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
661 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
662 support for these 48 channels of digital I/O.
664 The base port addresses for the devices may be configured via the base
665 array module parameter.
668 tristate "IT87xx GPIO support"
670 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
672 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
673 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
675 To compile this driver as a module, choose M here: the module will
679 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
680 depends on (X86 || COMPILE_TEST) && PCI
684 Say yes here to support GPIO interface on Intel Poulsbo SCH,
685 Intel Tunnel Creek processor, Intel Centerton processor or
686 Intel Quark X1000 SoC.
688 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
689 powered by the core power rail and are turned off during sleep
690 modes (S3 and higher). The remaining four GPIOs are powered by
691 the Intel SCH suspend power supply. These GPIOs remain
692 active during S3. The suspend powered GPIOs can be used to wake the
693 system from the Suspend-to-RAM state.
695 The Intel Tunnel Creek processor has 5 GPIOs powered by the
696 core power rail and 9 from suspend power supply.
698 The Intel Centerton processor has a total of 30 GPIO pins.
699 Twenty-one are powered by the core power rail and 9 from the
700 suspend power supply.
702 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
703 power well and 6 from the suspend power well.
706 tristate "SMSC SCH311x SuperI/O GPIO"
708 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
709 SCH3116 "Super I/O" chipsets.
711 To compile this driver as a module, choose M here: the module will
712 be called gpio-sch311x.
715 tristate "TS-5500 DIO blocks and compatibles"
716 depends on TS5500 || COMPILE_TEST
718 This driver supports Digital I/O exposed by pin blocks found on some
719 Technologic Systems platforms. It includes, but is not limited to, 3
720 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
724 tristate "Winbond Super I/O GPIO support"
727 This option enables support for GPIOs found on Winbond Super I/O
729 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
732 You will need to provide a module parameter "gpios", or a
733 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
734 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
736 To compile this driver as a module, choose M here: the module will
737 be called gpio-winbond.
740 tristate "WinSystems WS16C48 GPIO support"
742 select GPIOLIB_IRQCHIP
744 Enables GPIO support for the WinSystems WS16C48. The base port
745 addresses for the devices may be configured via the base module
746 parameter. The interrupt line numbers for the devices may be
747 configured via the irq module parameter.
751 menu "I2C GPIO expanders"
755 tristate "ADP5588 I2C GPIO expander"
757 This option enables support for 18 GPIOs found
758 on Analog Devices ADP5588 GPIO Expanders.
760 config GPIO_ADP5588_IRQ
761 bool "Interrupt controller support for ADP5588"
762 depends on GPIO_ADP5588=y
764 Say yes here to enable the adp5588 to be used as an interrupt
765 controller. It requires the driver to be built in the kernel.
768 tristate "Avionic Design N-bit GPIO expander"
770 select GPIOLIB_IRQCHIP
772 This option enables support for N GPIOs found on Avionic Design
773 I2C GPIO expanders. The register space will be extended by powers
774 of two, so the controller will need to accommodate for that. For
775 example: if a controller provides 48 pins, 6 registers will be
776 enough to represent all pins, but the driver will assume a
777 register layout for 64 pins (8 registers).
780 tristate "Maxim MAX7300 GPIO expander"
783 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
786 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
788 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
789 Port Expanders. Each IO port on these chips has a fixed role of
790 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
791 Input and Output (designed by 'P'). The combinations are listed
794 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
795 max7322 (4I4O), max7323 (4P4O)
797 16 bits: max7324 (8I8O), max7325 (8P8O),
798 max7326 (4I12O), max7327 (4P12O)
800 Board setup code must specify the model to use, and the start
801 number for these GPIOs.
803 config GPIO_MAX732X_IRQ
804 bool "Interrupt controller support for MAX732x"
805 depends on GPIO_MAX732X=y
806 select GPIOLIB_IRQCHIP
808 Say yes here to enable the max732x to be used as an interrupt
809 controller. It requires the driver to be built in the kernel.
811 config GPIO_MC9S08DZ60
812 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
813 depends on I2C=y && MACH_MX35_3DS
815 Select this to enable the MC9S08DZ60 GPIO driver
818 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
820 Say yes here to provide access to several register-oriented
821 SMBus I/O expanders, made mostly by NXP or TI. Compatible
824 4 bits: pca9536, pca9537
826 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
827 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
829 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
834 40 bits: pca9505, pca9698
836 config GPIO_PCA953X_IRQ
837 bool "Interrupt controller support for PCA953x"
838 depends on GPIO_PCA953X=y
839 select GPIOLIB_IRQCHIP
841 Say yes here to enable the pca953x to be used as an interrupt
842 controller. It requires the driver to be built in the kernel.
845 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
846 select GPIOLIB_IRQCHIP
849 Say yes here to provide access to most "quasi-bidirectional" I2C
850 GPIO expanders used for additional digital outputs or inputs.
851 Most of these parts are from NXP, though TI is a second source for
852 some of them. Compatible models include:
854 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
855 pca9670, pca9672, pca9674, pca9674a,
858 16 bits: pcf8575, pcf8575c, pca8575,
859 pca9671, pca9673, pca9675
861 Your board setup code will need to declare the expanders in
862 use, and assign numbers to the GPIOs they expose. Those GPIOs
863 can then be used from drivers and other kernel code, just like
864 other GPIOs, but only accessible from task contexts.
866 This driver provides an in-kernel interface to those GPIOs using
867 platform-neutral GPIO calls.
870 tristate "TPIC2810 8-Bit I2C GPO expander"
872 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
874 To compile this driver as a module, choose M here: the module will
875 be called gpio-tpic2810.
878 tristate "Technologic Systems FPGA I2C GPIO"
879 depends on SOC_IMX6 || COMPILE_TEST
882 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
883 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
887 menu "MFD GPIO expanders"
890 tristate "GPIO Support for ADP5520 PMIC"
891 depends on PMIC_ADP5520
893 This option enables support for on-chip GPIO found
894 on Analog Devices ADP5520 PMICs.
896 config GPIO_ALTERA_A10SR
897 tristate "Altera Arria10 System Resource GPIO"
898 depends on MFD_ALTERA_A10SR
900 Driver for Arria10 Development Kit GPIO expansion which
901 includes reads of pushbuttons and DIP switches as well
905 tristate "Wolfson Microelectronics Arizona class devices"
906 depends on MFD_ARIZONA
908 Support for GPIOs on Wolfson Arizona class devices.
910 config GPIO_BD9571MWV
911 tristate "ROHM BD9571 GPIO support"
912 depends on MFD_BD9571MWV
914 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
915 available on the ROHM PMIC in total, both of which can also
918 This driver can also be built as a module. If so, the module
919 will be called gpio-bd9571mwv.
921 config GPIO_CRYSTAL_COVE
922 tristate "GPIO support for Crystal Cove PMIC"
923 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
924 select GPIOLIB_IRQCHIP
926 Support for GPIO pins on Crystal Cove PMIC.
928 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
931 This driver can also be built as a module. If so, the module will be
932 called gpio-crystalcove.
935 tristate "AMD CS5535/CS5536 GPIO support"
936 depends on X86 || MIPS || COMPILE_TEST
937 depends on MFD_CS5535
939 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
940 can be used for quite a number of things. The CS5535/6 is found on
941 AMD Geode and Lemote Yeeloong devices.
946 tristate "Dialog DA9052 GPIO"
947 depends on PMIC_DA9052
949 Say yes here to enable the GPIO driver for the DA9052 chip.
952 tristate "Dialog Semiconductor DA9055 GPIO"
953 depends on MFD_DA9055
955 Say yes here to enable the GPIO driver for the DA9055 chip.
957 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
958 be controller by this driver.
960 If driver is built as a module it will be called gpio-da9055.
963 tristate "Diolan DLN2 GPIO support"
965 select GPIOLIB_IRQCHIP
968 Select this option to enable GPIO driver for the Diolan DLN2
971 This driver can also be built as a module. If so, the module
972 will be called gpio-dln2.
975 bool "HTC EGPIO support"
976 depends on GPIOLIB && ARM
978 This driver supports the CPLD egpio chip present on
979 several HTC phones. It provides basic support for input
980 pins, output pins, and irqs.
983 tristate "Janz VMOD-TTL Digital IO Module"
984 depends on MFD_JANZ_CMODIO
986 This enables support for the Janz VMOD-TTL Digital IO module.
987 This driver provides support for driving the pins in output
988 mode only. Input mode is not supported.
991 tristate "Kontron ETX / COMexpress GPIO"
992 depends on MFD_KEMPLD
994 This enables support for the PLD GPIO interface on some Kontron ETX
995 and COMexpress (ETXexpress) modules.
997 This driver can also be built as a module. If so, the module will be
1001 tristate "TI/National Semiconductor LP3943 GPIO expander"
1002 depends on MFD_LP3943
1004 GPIO driver for LP3943 MFD.
1005 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1006 Open drain outputs are required for this usage.
1009 tristate "TI LP873X GPO"
1010 depends on MFD_TI_LP873X
1012 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1015 This driver can also be built as a module. If so, the module will be
1019 tristate "TI LP87565 GPIO"
1020 depends on MFD_TI_LP87565
1022 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1025 This driver can also be built as a module. If so, the module will be
1026 called gpio-lp87565.
1028 config GPIO_MAX77620
1029 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1030 depends on MFD_MAX77620
1032 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1033 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1034 driver also provides interrupt support for each of the gpios.
1035 Say yes here to enable the max77620 to be used as gpio controller.
1038 bool "Intel MSIC mixed signal gpio support"
1039 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1041 Enable support for GPIO on intel MSIC controllers found in
1045 bool "TI PALMAS series PMICs GPIO"
1046 depends on MFD_PALMAS
1048 Select this option to enable GPIO driver for the TI PALMAS
1052 bool "RICOH RC5T583 GPIO"
1053 depends on MFD_RC5T583
1055 Select this option to enable GPIO driver for the Ricoh RC5T583
1057 This driver provides the support for driving/reading the gpio pins
1058 of RC5T583 device through standard gpio library.
1062 depends on MFD_STMPE
1064 select GPIOLIB_IRQCHIP
1066 This enables support for the GPIOs found on the STMPE I/O
1070 bool "TC3589X GPIOs"
1071 depends on MFD_TC3589X
1073 select GPIOLIB_IRQCHIP
1075 This enables support for the GPIOs found on the TC3589X
1078 config GPIO_TIMBERDALE
1079 bool "Support for timberdale GPIO IP"
1080 depends on MFD_TIMBERDALE
1082 Add support for the GPIO IP in the timberdale FPGA.
1084 config GPIO_TPS65086
1085 tristate "TI TPS65086 GPO"
1086 depends on MFD_TPS65086
1088 This driver supports the GPO on TI TPS65086x PMICs.
1090 config GPIO_TPS65218
1091 tristate "TPS65218 GPIO"
1092 depends on MFD_TPS65218
1094 Select this option to enable GPIO driver for the TPS65218
1097 config GPIO_TPS6586X
1098 bool "TPS6586X GPIO"
1099 depends on MFD_TPS6586X
1101 Select this option to enable GPIO driver for the TPS6586X
1104 config GPIO_TPS65910
1105 bool "TPS65910 GPIO"
1106 depends on MFD_TPS65910
1108 Select this option to enable GPIO driver for the TPS65910
1111 config GPIO_TPS65912
1112 tristate "TI TPS65912 GPIO"
1113 depends on MFD_TPS65912
1115 This driver supports TPS65912 gpio chip
1117 config GPIO_TPS68470
1118 bool "TPS68470 GPIO"
1119 depends on MFD_TPS68470
1121 Select this option to enable GPIO driver for the TPS68470
1123 There are 7 GPIOs and few sensor related GPIOs supported
1124 by the TPS68470. While the 7 GPIOs can be configured as
1125 input or output as appropriate, the sensor related GPIOs
1126 are "output only" GPIOs.
1128 This driver config is bool, as the GPIO functionality
1129 of the TPS68470 must be available before dependent
1133 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1134 depends on TWL4030_CORE
1136 Say yes here to access the GPIO signals of various multi-function
1137 power management chips from Texas Instruments.
1140 tristate "TWL6040 GPO"
1141 depends on TWL6040_CORE
1143 Say yes here to access the GPO signals of twl6040
1144 audio chip from Texas Instruments.
1147 tristate "Philips UCB1400 GPIO"
1148 depends on UCB1400_CORE
1150 This enables support for the Philips UCB1400 GPIO pins.
1151 The UCB1400 is an AC97 audio codec.
1153 config GPIO_WHISKEY_COVE
1154 tristate "GPIO support for Whiskey Cove PMIC"
1155 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1156 select GPIOLIB_IRQCHIP
1158 Support for GPIO pins on Whiskey Cove PMIC.
1160 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1163 This driver can also be built as a module. If so, the module will be
1167 tristate "WM831x GPIOs"
1168 depends on MFD_WM831X
1170 Say yes here to access the GPIO signals of WM831x power management
1171 chips from Wolfson Microelectronics.
1174 tristate "WM8350 GPIOs"
1175 depends on MFD_WM8350
1177 Say yes here to access the GPIO signals of WM8350 power management
1178 chips from Wolfson Microelectronics.
1181 tristate "WM8994 GPIOs"
1182 depends on MFD_WM8994
1184 Say yes here to access the GPIO signals of WM8994 audio hub
1185 CODECs from Wolfson Microelectronics.
1189 menu "PCI GPIO expanders"
1193 tristate "AMD 8111 GPIO driver"
1194 depends on X86 || COMPILE_TEST
1196 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1198 Note, that usually system firmware/ACPI handles GPIO pins on their
1199 own and users might easily break their systems with uncarefull usage
1205 tristate "BT8XX GPIO abuser"
1206 depends on VIDEO_BT848=n
1208 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1209 as a cheap PCI GPIO card.
1211 This chip can be found on Miro, Hauppauge and STB TV-cards.
1213 The card needs to be physically altered for using it as a
1214 GPIO card. For more information on how to build a GPIO card
1215 from a BT8xx TV card, see the documentation file at
1216 Documentation/bt8xxgpio.txt
1220 config GPIO_INTEL_MID
1221 bool "Intel MID GPIO support"
1222 depends on X86_INTEL_MID
1223 select GPIOLIB_IRQCHIP
1225 Say Y here to support Intel MID GPIO.
1227 config GPIO_MERRIFIELD
1228 tristate "Intel Merrifield GPIO support"
1229 depends on X86_INTEL_MID
1230 select GPIOLIB_IRQCHIP
1232 Say Y here to support Intel Merrifield GPIO.
1235 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1236 depends on X86 || COMPILE_TEST
1237 select GENERIC_IRQ_CHIP
1239 ML7213 is companion chip for Intel Atom E6xx series.
1240 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1241 Hub) which is for IVI(In-Vehicle Infotainment) use.
1242 This driver can access the IOH's GPIO device.
1245 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1246 depends on X86_32 || MIPS || COMPILE_TEST
1247 select GENERIC_IRQ_CHIP
1249 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1250 which is an IOH(Input/Output Hub) for x86 embedded processor.
1251 This driver can access PCH GPIO device.
1253 This driver also can be used for LAPIS Semiconductor IOH(Input/
1254 Output Hub), ML7223 and ML7831.
1255 ML7223 IOH is for MP(Media Phone) use.
1256 ML7831 IOH is for general purpose use.
1257 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1258 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1260 config GPIO_PCI_IDIO_16
1261 tristate "ACCES PCI-IDIO-16 GPIO support"
1262 select GPIOLIB_IRQCHIP
1264 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1265 generated when any of the inputs change state (low to high or high to
1266 low). Input filter control is not supported by this driver, and the
1267 input filters are deactivated by this driver.
1269 config GPIO_PCIE_IDIO_24
1270 tristate "ACCES PCIe-IDIO-24 GPIO support"
1271 select GPIOLIB_IRQCHIP
1273 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1274 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1275 when any of the inputs change state (low to high or high to low).
1276 Input filter control is not supported by this driver, and the input
1277 filters are deactivated by this driver.
1280 tristate "RDC R-321x GPIO support"
1284 Support for the RDC R321x SoC GPIOs over southbridge
1285 PCI configuration space.
1287 config GPIO_SODAVILLE
1288 bool "Intel Sodaville GPIO support"
1289 depends on X86 && OF
1291 select GENERIC_IRQ_CHIP
1293 Say Y here to support Intel Sodaville GPIO.
1297 menu "SPI GPIO expanders"
1298 depends on SPI_MASTER
1301 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1304 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1305 shift registers. This driver can be used to provide access
1306 to more gpio outputs.
1308 config GPIO_MAX3191X
1309 tristate "Maxim MAX3191x industrial serializer"
1312 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1313 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1314 chip to make 8 digital 24V inputs available via SPI. Supports
1315 CRC checksums to guard against electromagnetic interference,
1316 as well as undervoltage and overtemperature detection.
1319 tristate "Maxim MAX7301 GPIO expander"
1322 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1325 tristate "Freescale MC33880 high-side/low-side switch"
1327 SPI driver for Freescale MC33880 high-side/low-side switch.
1328 This provides GPIO interface supporting inputs and outputs.
1331 tristate "Generic parallel-in/serial-out shift register"
1333 GPIO driver for SPI compatible parallel-in/serial-out shift
1334 registers. These are input only devices.
1337 tristate "EXAR XRA1403 16-bit GPIO expander"
1340 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1344 menu "USB GPIO expanders"
1347 config GPIO_VIPERBOARD
1348 tristate "Viperboard GPIO a & b support"
1349 depends on MFD_VIPERBOARD
1351 Say yes here to access the GPIO signals of Nano River
1352 Technologies Viperboard. There are two GPIO chips on the
1353 board: gpioa and gpiob.
1354 See viperboard API specification and Nano
1355 River Tech's viperboard.h for detailed meaning
1356 of the module parameters.