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
13 config ARCH_WANT_OPTIONAL_GPIOLIB
16 Select this config option from the architecture Kconfig, if
17 it is possible to use gpiolib on the architecture, but let the
18 user decide whether to actually build it or not.
19 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
20 not depend on GPIOs being available, but rather let the user
21 decide whether he needs it or not.
23 config ARCH_REQUIRE_GPIOLIB
27 Platforms select gpiolib if they use this infrastructure
28 for all their GPIOs, usually starting with ones integrated
30 Selecting this from the architecture code will cause the gpiolib
31 code to always get built in.
38 This enables GPIO support through the generic GPIO library.
39 You only need to enable this, if you also want to enable
40 one or more of the GPIO drivers below.
58 config GPIOLIB_IRQCHIP
63 bool "Debug GPIO calls"
64 depends on DEBUG_KERNEL
66 Say Y here to add some extra checks and diagnostics to GPIO calls.
67 These checks help ensure that GPIOs have been properly initialized
68 before they are used, and that sleeping calls are not made from
69 non-sleeping contexts. They can make bitbanged serial protocols
70 slower. The diagnostics help catch the type of setup errors
71 that are most common when setting up new platforms or boards.
74 bool "/sys/class/gpio/... (sysfs interface)"
77 Say Y here to add a sysfs interface for GPIOs.
79 This is mostly useful to work around omissions in a system's
80 kernel support. Those are common in custom and semicustom
81 hardware assembled using standard kernels with a minimum of
82 custom patches. In those cases, userspace code may import
83 a given GPIO from the kernel, if no kernel driver requested it.
85 Kernel drivers may also request that a particular GPIO be
86 exported to userspace; this can be useful when debugging.
91 # put drivers in the right section, in alphabetical order
93 # This symbol is selected by both I2C and SPI expanders
97 menu "Memory mapped GPIO drivers"
100 tristate "GPIO driver for 74xx-ICs with MMIO access"
104 Say yes here to support GPIO functionality for 74xx-compatible ICs
105 with MMIO access. Compatible models include:
106 1 bit: 741G125 (Input), 741G74 (Output)
107 2 bits: 742G125 (Input), 7474 (Output)
108 4 bits: 74125 (Input), 74175 (Output)
109 6 bits: 74365 (Input), 74174 (Output)
110 8 bits: 74244 (Input), 74273 (Output)
111 16 bits: 741624 (Input), 7416374 (Output)
114 tristate "Altera GPIO"
116 select GPIOLIB_IRQCHIP
118 Say Y or M here to build support for the Altera PIO device.
120 If driver is built as a module it will be called gpio-altera.
123 tristate "AMD Promontory GPIO support"
127 driver for GPIO functionality on Promontory IOHub
128 Require ACPI ASL code to enumerate as a platform device.
131 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
133 depends on ATH79 || COMPILE_TEST
135 select GPIOLIB_IRQCHIP
137 Select this option to enable GPIO driver for
138 Atheros AR71XX/AR724X/AR913X SoC devices.
141 bool "Broadcom Kona GPIO"
142 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
144 Turn on GPIO support for Broadcom "Kona" chips.
147 tristate "BRCMSTB GPIO support"
148 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
149 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
151 select GPIOLIB_IRQCHIP
153 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
156 tristate "CLPS711X GPIO support"
157 depends on ARCH_CLPS711X || COMPILE_TEST
160 Say yes here to support GPIO on CLPS711X SoCs.
163 bool "TI Davinci/Keystone GPIO support"
164 default y if ARCH_DAVINCI
165 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
167 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
170 tristate "Synopsys DesignWare APB GPIO driver"
172 select GENERIC_IRQ_CHIP
174 Say Y or M here to build support for the Synopsys DesignWare APB
178 tristate "Emma Mobile GPIO"
179 depends on ARM && OF_GPIO
181 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
185 depends on ARCH_EP93XX
189 bool "Axis ETRAX FS General I/O"
190 depends on CRIS || COMPILE_TEST
193 select GPIOLIB_IRQCHIP
195 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
198 bool "GE FPGA based GPIO"
202 Support for common GPIO functionality provided on some GE Single Board
205 This driver provides basic support (configure as input or output, read
206 and write pin state) for GPIO implemented in a number of GE single
209 config GPIO_GENERIC_PLATFORM
210 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
213 Say yes here to support basic platform_device memory-mapped GPIO controllers.
216 tristate "Aeroflex Gaisler GRGPIO support"
221 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
222 VHDL IP core library.
225 tristate "Intel ICH GPIO"
226 depends on PCI && X86
230 Say yes here to support the GPIO functionality of a number of Intel
231 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
232 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
233 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
238 tristate "Intel IOP GPIO"
239 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
241 Say yes here to support the GPIO functionality of a number of Intel
247 bool "Loongson-2/3 GPIO support"
248 depends on CPU_LOONGSON2 || CPU_LOONGSON3
250 driver for GPIO functionality on Loongson-2F/3A/3B processors.
253 tristate "NXP LPC18XX/43XX GPIO support"
254 default y if ARCH_LPC18XX
255 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
257 Select this option to enable GPIO driver for
258 NXP LPC18XX/43XX devices.
260 config GPIO_LYNXPOINT
261 tristate "Intel Lynxpoint GPIO support"
262 depends on ACPI && X86
263 select GPIOLIB_IRQCHIP
265 driver for GPIO functionality on Intel Lynxpoint PCH chipset
266 Requires ACPI device enumeration code to set up a platform device.
269 bool "GPIO support for Fujitsu MB86S7x Platforms"
270 depends on ARCH_MB86S7X || COMPILE_TEST
272 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
275 tristate "MEN 16Z127 GPIO support"
279 Say yes here to support the MEN 16Z127 GPIO Controller
281 config GPIO_MM_LANTIQ
282 bool "Lantiq Memory mapped GPIOs"
283 depends on LANTIQ && SOC_XWAY
285 This enables support for memory mapped GPIOs on the External Bus Unit
286 (EBU) found on Lantiq SoCs. The gpios are output only as they are
287 created by attaching a 16bit latch to the bus.
290 bool "MOXART GPIO support"
291 depends on ARCH_MOXART || COMPILE_TEST
294 Select this option to enable GPIO driver for
295 MOXA ART SoC devices.
299 depends on PPC_MPC52xx
302 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
303 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
304 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
309 Say Y here if you're going to use hardware that connects to the
310 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
314 depends on PLAT_ORION
316 select GENERIC_IRQ_CHIP
322 select GENERIC_IRQ_CHIP
328 select GENERIC_IRQ_CHIP
331 tristate "Cavium OCTEON GPIO"
332 depends on GPIOLIB && CAVIUM_OCTEON_SOC
335 Say yes here to support the on-chip GPIO lines on the OCTEON
339 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
340 default y if ARCH_OMAP
342 select GENERIC_IRQ_CHIP
343 select GPIOLIB_IRQCHIP
345 Say yes here to enable GPIO support for TI OMAP SoCs.
348 bool "PrimeCell PL061 GPIO support"
351 select GPIOLIB_IRQCHIP
353 Say yes here to support the PrimeCell PL061 GPIO device
356 bool "PXA GPIO support"
357 depends on ARCH_PXA || ARCH_MMP
359 Say yes here to support the PXA GPIO device
362 tristate "Renesas R-Car GPIO"
363 depends on ARCH_RENESAS || COMPILE_TEST
364 select GPIOLIB_IRQCHIP
366 Say yes here to support GPIO on Renesas R-Car SoCs.
368 config GPIO_SPEAR_SPICS
369 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
370 depends on PLAT_SPEAR
371 select GENERIC_IRQ_CHIP
373 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
376 bool "STA2x11/ConneXt GPIO support"
377 depends on MFD_STA2X11
378 select GENERIC_IRQ_CHIP
380 Say yes here to support the STA2x11/ConneXt GPIO device.
381 The GPIO module has 128 GPIO pins with alternate functions.
384 bool "XWAY STP GPIOs"
387 This enables support for the Serial To Parallel (STP) unit found on
388 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
389 that can be up to 24 bit. This peripheral is aimed at driving leds.
390 Some of the gpios/leds can be auto updated by the soc with dsl and
394 tristate "GPIO based on SYSCON"
395 depends on MFD_SYSCON && OF
397 Say yes here to support GPIO functionality though SYSCON driver.
401 select GENERIC_IRQ_CHIP
405 bool "NVIDIA Tegra GPIO support"
407 depends on ARCH_TEGRA || COMPILE_TEST
410 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
413 tristate "TS-4800 DIO blocks and compatibles"
415 depends on SOC_IMX51 || COMPILE_TEST
418 This driver support TS-4800 FPGA GPIO controllers.
421 bool "Toumaz Xenif TZ1090 GPIO support"
422 depends on SOC_TZ1090
423 select GENERIC_IRQ_CHIP
426 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
428 config GPIO_TZ1090_PDC
429 bool "Toumaz Xenif TZ1090 PDC GPIO support"
430 depends on SOC_TZ1090
433 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
437 depends on ARCH_MXC && SOC_VF610
438 select GPIOLIB_IRQCHIP
440 Say yes here to support Vybrid vf610 GPIOs.
443 tristate "NEC VR4100 series General-purpose I/O Uint support"
444 depends on CPU_VR41XX
446 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
449 tristate "VIA VX855/VX875 GPIO"
454 Support access to the VX855/VX875 GPIO lines through the gpio library.
456 This driver provides common support for accessing the device,
457 additional drivers must be enabled in order to use the
458 functionality of the device.
461 bool "APM X-Gene GPIO controller support"
462 depends on ARM64 && OF_GPIO
464 This driver is to support the GPIO block within the APM X-Gene SoC
465 platform's generic flash controller. The GPIO pins are muxed with
466 the generic flash controller's address and data pins. Say yes
467 here to enable the GFC GPIO functionality.
470 tristate "APM X-Gene GPIO standby controller support"
471 depends on ARCH_XGENE && OF_GPIO
473 select GPIOLIB_IRQCHIP
475 This driver supports the GPIO block within the APM X-Gene
476 Standby Domain. Say yes here to enable the GPIO functionality.
479 tristate "Xilinx GPIO support"
482 Say yes here to support the Xilinx FPGA GPIO device
485 tristate "Netlogic XLP GPIO support"
486 depends on OF_GPIO && (CPU_XLP || ARCH_VULCAN || COMPILE_TEST)
487 select GPIOLIB_IRQCHIP
489 This driver provides support for GPIO interface on Netlogic XLP MIPS64
490 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
496 bool "Xtensa GPIO32 support"
498 depends on HAVE_XTENSA_GPIO32
501 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
502 and EXPSTATE (output) ports
505 bool "LSI ZEVIO SoC memory mapped GPIOs"
506 depends on ARM && OF_GPIO
508 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
511 tristate "Xilinx Zynq GPIO support"
512 depends on ARCH_ZYNQ || ARCH_ZYNQMP
513 select GPIOLIB_IRQCHIP
515 Say yes here to support Xilinx Zynq GPIO controller.
518 bool "ZTE ZX GPIO support"
519 select GPIOLIB_IRQCHIP
521 Say yes here to support the GPIO device on ZTE ZX SoCs.
523 config GPIO_LOONGSON1
524 tristate "Loongson1 GPIO support"
525 depends on MACH_LOONGSON32
528 Say Y or M here to support GPIO on Loongson1 SoCs.
532 menu "Port-mapped I/O GPIO drivers"
533 depends on X86 # Unconditional I/O space access
535 config GPIO_104_DIO_48E
536 tristate "ACCES 104-DIO-48E GPIO support"
537 depends on ISA_BUS_API
538 select GPIOLIB_IRQCHIP
540 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
541 104-DIO-24E). The base port addresses for the devices may be
542 configured via the base module parameter. The interrupt line numbers
543 for the devices may be configured via the irq module parameter.
545 config GPIO_104_IDIO_16
546 tristate "ACCES 104-IDIO-16 GPIO support"
547 depends on ISA_BUS_API
548 select GPIOLIB_IRQCHIP
550 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
551 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
552 base port addresses for the devices may be configured via the base
553 module parameter. The interrupt line numbers for the devices may be
554 configured via the irq module parameter.
556 config GPIO_104_IDI_48
557 tristate "ACCES 104-IDI-48 GPIO support"
558 depends on ISA_BUS_API
559 select GPIOLIB_IRQCHIP
561 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
562 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
563 the devices may be configured via the base module parameter. The
564 interrupt line numbers for the devices may be configured via the irq
568 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
570 This option enables support for GPIOs found on Fintek Super-I/O
571 chips F71869, F71869A, F71882FG, F71889F and F81866.
573 To compile this driver as a module, choose M here: the module will
574 be called f7188x-gpio.
577 tristate "IT87xx GPIO support"
579 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
581 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
582 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
584 To compile this driver as a module, choose M here: the module will
588 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
593 Say yes here to support GPIO interface on Intel Poulsbo SCH,
594 Intel Tunnel Creek processor, Intel Centerton processor or
595 Intel Quark X1000 SoC.
597 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
598 powered by the core power rail and are turned off during sleep
599 modes (S3 and higher). The remaining four GPIOs are powered by
600 the Intel SCH suspend power supply. These GPIOs remain
601 active during S3. The suspend powered GPIOs can be used to wake the
602 system from the Suspend-to-RAM state.
604 The Intel Tunnel Creek processor has 5 GPIOs powered by the
605 core power rail and 9 from suspend power supply.
607 The Intel Centerton processor has a total of 30 GPIO pins.
608 Twenty-one are powered by the core power rail and 9 from the
609 suspend power supply.
611 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
612 power well and 6 from the suspend power well.
615 tristate "SMSC SCH311x SuperI/O GPIO"
617 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
618 SCH3116 "Super I/O" chipsets.
620 To compile this driver as a module, choose M here: the module will
621 be called gpio-sch311x.
624 tristate "TS-5500 DIO blocks and compatibles"
625 depends on TS5500 || COMPILE_TEST
627 This driver supports Digital I/O exposed by pin blocks found on some
628 Technologic Systems platforms. It includes, but is not limited to, 3
629 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
633 tristate "WinSystems WS16C48 GPIO support"
634 depends on ISA_BUS_API
635 select GPIOLIB_IRQCHIP
637 Enables GPIO support for the WinSystems WS16C48. The base port
638 addresses for the devices may be configured via the base module
639 parameter. The interrupt line numbers for the devices may be
640 configured via the irq module parameter.
644 menu "I2C GPIO expanders"
648 tristate "ADP5588 I2C GPIO expander"
650 This option enables support for 18 GPIOs found
651 on Analog Devices ADP5588 GPIO Expanders.
653 config GPIO_ADP5588_IRQ
654 bool "Interrupt controller support for ADP5588"
655 depends on GPIO_ADP5588=y
657 Say yes here to enable the adp5588 to be used as an interrupt
658 controller. It requires the driver to be built in the kernel.
661 tristate "Avionic Design N-bit GPIO expander"
663 select GPIOLIB_IRQCHIP
665 This option enables support for N GPIOs found on Avionic Design
666 I2C GPIO expanders. The register space will be extended by powers
667 of two, so the controller will need to accommodate for that. For
668 example: if a controller provides 48 pins, 6 registers will be
669 enough to represent all pins, but the driver will assume a
670 register layout for 64 pins (8 registers).
673 tristate "Maxim MAX7300 GPIO expander"
676 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
679 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
681 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
682 Port Expanders. Each IO port on these chips has a fixed role of
683 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
684 Input and Output (designed by 'P'). The combinations are listed
687 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
688 max7322 (4I4O), max7323 (4P4O)
690 16 bits: max7324 (8I8O), max7325 (8P8O),
691 max7326 (4I12O), max7327 (4P12O)
693 Board setup code must specify the model to use, and the start
694 number for these GPIOs.
696 config GPIO_MAX732X_IRQ
697 bool "Interrupt controller support for MAX732x"
698 depends on GPIO_MAX732X=y
699 select GPIOLIB_IRQCHIP
701 Say yes here to enable the max732x to be used as an interrupt
702 controller. It requires the driver to be built in the kernel.
704 config GPIO_MC9S08DZ60
705 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
706 depends on I2C=y && MACH_MX35_3DS
708 Select this to enable the MC9S08DZ60 GPIO driver
711 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
713 Say yes here to provide access to several register-oriented
714 SMBus I/O expanders, made mostly by NXP or TI. Compatible
717 4 bits: pca9536, pca9537
719 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
720 pca9556, pca9557, pca9574, tca6408, xra1202
722 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
727 40 bits: pca9505, pca9698
729 config GPIO_PCA953X_IRQ
730 bool "Interrupt controller support for PCA953x"
731 depends on GPIO_PCA953X=y
732 select GPIOLIB_IRQCHIP
734 Say yes here to enable the pca953x to be used as an interrupt
735 controller. It requires the driver to be built in the kernel.
738 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
739 select GPIOLIB_IRQCHIP
742 Say yes here to provide access to most "quasi-bidirectional" I2C
743 GPIO expanders used for additional digital outputs or inputs.
744 Most of these parts are from NXP, though TI is a second source for
745 some of them. Compatible models include:
747 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
748 pca9670, pca9672, pca9674, pca9674a,
751 16 bits: pcf8575, pcf8575c, pca8575,
752 pca9671, pca9673, pca9675
754 Your board setup code will need to declare the expanders in
755 use, and assign numbers to the GPIOs they expose. Those GPIOs
756 can then be used from drivers and other kernel code, just like
757 other GPIOs, but only accessible from task contexts.
759 This driver provides an in-kernel interface to those GPIOs using
760 platform-neutral GPIO calls.
763 bool "Semtech SX150x I2C GPIO expander"
765 select GPIOLIB_IRQCHIP
768 Say yes here to provide support for Semtech SX150-series I2C
769 GPIO expanders. Compatible models include:
775 tristate "TPIC2810 8-Bit I2C GPO expander"
777 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
779 To compile this driver as a module, choose M here: the module will
780 be called gpio-tpic2810.
784 menu "MFD GPIO expanders"
787 tristate "GPIO Support for ADP5520 PMIC"
788 depends on PMIC_ADP5520
790 This option enables support for on-chip GPIO found
791 on Analog Devices ADP5520 PMICs.
794 tristate "Wolfson Microelectronics Arizona class devices"
795 depends on MFD_ARIZONA
797 Support for GPIOs on Wolfson Arizona class devices.
799 config GPIO_CRYSTAL_COVE
800 tristate "GPIO support for Crystal Cove PMIC"
801 depends on INTEL_SOC_PMIC
802 select GPIOLIB_IRQCHIP
804 Support for GPIO pins on Crystal Cove PMIC.
806 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
809 This driver can also be built as a module. If so, the module will be
810 called gpio-crystalcove.
813 tristate "AMD CS5535/CS5536 GPIO support"
814 depends on MFD_CS5535
816 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
817 can be used for quite a number of things. The CS5535/6 is found on
818 AMD Geode and Lemote Yeeloong devices.
823 tristate "Dialog DA9052 GPIO"
824 depends on PMIC_DA9052
826 Say yes here to enable the GPIO driver for the DA9052 chip.
829 tristate "Dialog Semiconductor DA9055 GPIO"
830 depends on MFD_DA9055
832 Say yes here to enable the GPIO driver for the DA9055 chip.
834 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
835 be controller by this driver.
837 If driver is built as a module it will be called gpio-da9055.
840 tristate "Diolan DLN2 GPIO support"
842 select GPIOLIB_IRQCHIP
845 Select this option to enable GPIO driver for the Diolan DLN2
848 This driver can also be built as a module. If so, the module
849 will be called gpio-dln2.
852 tristate "Janz VMOD-TTL Digital IO Module"
853 depends on MFD_JANZ_CMODIO
855 This enables support for the Janz VMOD-TTL Digital IO module.
856 This driver provides support for driving the pins in output
857 mode only. Input mode is not supported.
860 tristate "Kontron ETX / COMexpress GPIO"
861 depends on MFD_KEMPLD
863 This enables support for the PLD GPIO interface on some Kontron ETX
864 and COMexpress (ETXexpress) modules.
866 This driver can also be built as a module. If so, the module will be
870 tristate "TI/National Semiconductor LP3943 GPIO expander"
871 depends on MFD_LP3943
873 GPIO driver for LP3943 MFD.
874 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
875 Open drain outputs are required for this usage.
878 tristate "GPIO support for PMIC MAX77620 and MAX20024"
879 depends on MFD_MAX77620
881 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
882 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
883 driver also provides interrupt support for each of the gpios.
884 Say yes here to enable the max77620 to be used as gpio controller.
887 bool "Intel MSIC mixed signal gpio support"
888 depends on MFD_INTEL_MSIC
890 Enable support for GPIO on intel MSIC controllers found in
894 bool "TI PALMAS series PMICs GPIO"
895 depends on MFD_PALMAS
897 Select this option to enable GPIO driver for the TI PALMAS
901 bool "RICOH RC5T583 GPIO"
902 depends on MFD_RC5T583
904 Select this option to enable GPIO driver for the Ricoh RC5T583
906 This driver provides the support for driving/reading the gpio pins
907 of RC5T583 device through standard gpio library.
913 select GPIOLIB_IRQCHIP
915 This enables support for the GPIOs found on the STMPE I/O
920 depends on MFD_TC3589X
922 select GPIOLIB_IRQCHIP
924 This enables support for the GPIOs found on the TC3589X
927 config GPIO_TIMBERDALE
928 bool "Support for timberdale GPIO IP"
929 depends on MFD_TIMBERDALE
931 Add support for the GPIO IP in the timberdale FPGA.
934 tristate "TI TPS65086 GPO"
935 depends on MFD_TPS65086
937 This driver supports the GPO on TI TPS65086x PMICs.
940 tristate "TPS65218 GPIO"
941 depends on MFD_TPS65218
943 Select this option to enable GPIO driver for the TPS65218
948 depends on MFD_TPS6586X
950 Select this option to enable GPIO driver for the TPS6586X
955 depends on MFD_TPS65910
957 Select this option to enable GPIO driver for the TPS65910
961 tristate "TI TPS65912 GPIO"
962 depends on MFD_TPS65912
964 This driver supports TPS65912 gpio chip
967 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
968 depends on TWL4030_CORE
970 Say yes here to access the GPIO signals of various multi-function
971 power management chips from Texas Instruments.
974 tristate "TWL6040 GPO"
975 depends on TWL6040_CORE
977 Say yes here to access the GPO signals of twl6040
978 audio chip from Texas Instruments.
981 tristate "Philips UCB1400 GPIO"
982 depends on UCB1400_CORE
984 This enables support for the Philips UCB1400 GPIO pins.
985 The UCB1400 is an AC97 audio codec.
988 tristate "WM831x GPIOs"
989 depends on MFD_WM831X
991 Say yes here to access the GPIO signals of WM831x power management
992 chips from Wolfson Microelectronics.
995 tristate "WM8350 GPIOs"
996 depends on MFD_WM8350
998 Say yes here to access the GPIO signals of WM8350 power management
999 chips from Wolfson Microelectronics.
1002 tristate "WM8994 GPIOs"
1003 depends on MFD_WM8994
1005 Say yes here to access the GPIO signals of WM8994 audio hub
1006 CODECs from Wolfson Microelectronics.
1010 menu "PCI GPIO expanders"
1014 tristate "AMD 8111 GPIO driver"
1016 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1018 Note, that usually system firmware/ACPI handles GPIO pins on their
1019 own and users might easily break their systems with uncarefull usage
1025 tristate "BT8XX GPIO abuser"
1026 depends on VIDEO_BT848=n
1028 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1029 as a cheap PCI GPIO card.
1031 This chip can be found on Miro, Hauppauge and STB TV-cards.
1033 The card needs to be physically altered for using it as a
1034 GPIO card. For more information on how to build a GPIO card
1035 from a BT8xx TV card, see the documentation file at
1036 Documentation/bt8xxgpio.txt
1040 config GPIO_INTEL_MID
1041 bool "Intel MID GPIO support"
1042 depends on X86_INTEL_MID
1043 select GPIOLIB_IRQCHIP
1045 Say Y here to support Intel MID GPIO.
1047 config GPIO_MERRIFIELD
1048 tristate "Intel Merrifield GPIO support"
1049 depends on X86_INTEL_MID
1050 select GPIOLIB_IRQCHIP
1052 Say Y here to support Intel Merrifield GPIO.
1055 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1056 select GENERIC_IRQ_CHIP
1058 ML7213 is companion chip for Intel Atom E6xx series.
1059 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1060 Hub) which is for IVI(In-Vehicle Infotainment) use.
1061 This driver can access the IOH's GPIO device.
1064 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1065 depends on X86_32 || MIPS || COMPILE_TEST
1066 select GENERIC_IRQ_CHIP
1068 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1069 which is an IOH(Input/Output Hub) for x86 embedded processor.
1070 This driver can access PCH GPIO device.
1072 This driver also can be used for LAPIS Semiconductor IOH(Input/
1073 Output Hub), ML7223 and ML7831.
1074 ML7223 IOH is for MP(Media Phone) use.
1075 ML7831 IOH is for general purpose use.
1076 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1077 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1080 tristate "RDC R-321x GPIO support"
1084 Support for the RDC R321x SoC GPIOs over southbridge
1085 PCI configuration space.
1087 config GPIO_SODAVILLE
1088 bool "Intel Sodaville GPIO support"
1089 depends on X86 && OF
1091 select GENERIC_IRQ_CHIP
1093 Say Y here to support Intel Sodaville GPIO.
1097 menu "SPI GPIO expanders"
1098 depends on SPI_MASTER
1101 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1104 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1105 shift registers. This driver can be used to provide access
1106 to more gpio outputs.
1109 tristate "Maxim MAX7301 GPIO expander"
1112 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1115 tristate "Freescale MC33880 high-side/low-side switch"
1117 SPI driver for Freescale MC33880 high-side/low-side switch.
1118 This provides GPIO interface supporting inputs and outputs.
1121 tristate "Generic parallel-in/serial-out shift register"
1123 GPIO driver for SPI compatible parallel-in/serial-out shift
1124 registers. These are input only devices.
1128 menu "SPI or I2C GPIO expanders"
1129 depends on (SPI_MASTER && !I2C) || I2C
1131 config GPIO_MCP23S08
1132 tristate "Microchip MCP23xxx I/O expander"
1133 select GPIOLIB_IRQCHIP
1135 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1137 This provides a GPIO interface supporting inputs and outputs.
1138 The I2C versions of the chips can be used as interrupt-controller.
1142 menu "USB GPIO expanders"
1145 config GPIO_VIPERBOARD
1146 tristate "Viperboard GPIO a & b support"
1147 depends on MFD_VIPERBOARD
1149 Say yes here to access the GPIO signals of Nano River
1150 Technologies Viperboard. There are two GPIO chips on the
1151 board: gpioa and gpiob.
1152 See viperboard API specification and Nano
1153 River Tech's viperboard.h for detailed meaning
1154 of the module parameters.