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.
36 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
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
94 tristate "Dialog DA9052 GPIO"
95 depends on PMIC_DA9052
97 Say yes here to enable the GPIO driver for the DA9052 chip.
100 tristate "Dialog Semiconductor DA9055 GPIO"
101 depends on MFD_DA9055
103 Say yes here to enable the GPIO driver for the DA9055 chip.
105 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
106 be controller by this driver.
108 If driver is built as a module it will be called gpio-da9055.
113 comment "Memory mapped GPIO drivers:"
115 config GPIO_74XX_MMIO
116 tristate "GPIO driver for 74xx-ICs with MMIO access"
120 Say yes here to support GPIO functionality for 74xx-compatible ICs
121 with MMIO access. Compatible models include:
122 1 bit: 741G125 (Input), 741G74 (Output)
123 2 bits: 742G125 (Input), 7474 (Output)
124 4 bits: 74125 (Input), 74175 (Output)
125 6 bits: 74365 (Input), 74174 (Output)
126 8 bits: 74244 (Input), 74273 (Output)
127 16 bits: 741624 (Input), 7416374 (Output)
130 tristate "CLPS711X GPIO support"
131 depends on ARCH_CLPS711X || COMPILE_TEST
134 Say yes here to support GPIO on CLPS711X SoCs.
137 bool "TI Davinci/Keystone GPIO support"
138 default y if ARCH_DAVINCI
139 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
141 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
143 config GPIO_GENERIC_PLATFORM
144 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
147 Say yes here to support basic platform_device memory-mapped GPIO controllers.
150 tristate "Synopsys DesignWare APB GPIO driver"
154 select GENERIC_IRQ_CHIP
156 Say Y or M here to build support for the Synopsys DesignWare APB
160 tristate "IT8761E GPIO support"
161 depends on X86 # unconditional access to IO space.
163 Say yes here to support GPIO functionality of IT8761E super I/O chip.
166 tristate "Emma Mobile GPIO"
167 depends on ARM && OF_GPIO
169 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
173 depends on ARCH_EP93XX
177 bool "LSI ZEVIO SoC memory mapped GPIOs"
178 depends on ARM && OF_GPIO
180 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
182 config GPIO_MM_LANTIQ
183 bool "Lantiq Memory mapped GPIOs"
184 depends on LANTIQ && SOC_XWAY
186 This enables support for memory mapped GPIOs on the External Bus Unit
187 (EBU) found on Lantiq SoCs. The gpios are output only as they are
188 created by attaching a 16bit latch to the bus.
191 tristate "F71882FG and F71889F GPIO support"
194 This option enables support for GPIOs found on Fintek Super-I/O
195 chips F71882FG and F71889F.
197 To compile this driver as a module, choose M here: the module will
198 be called f7188x-gpio.
201 bool "MOXART GPIO support"
202 depends on ARCH_MOXART
205 Select this option to enable GPIO driver for
206 MOXA ART SoC devices.
210 depends on PPC_MPC52xx
213 bool "MPC512x/MPC8xxx GPIO support"
214 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
215 FSL_SOC_BOOKE || PPC_86xx
217 Say Y here if you're going to use hardware that connects to the
218 MPC512x/831x/834x/837x/8572/8610 GPIOs.
221 tristate "Qualcomm MSM GPIO v1"
222 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
224 Say yes here to support the GPIO interface on ARM v6 based
225 Qualcomm MSM chips. Most of the pins on the MSM can be
226 selected for GPIO, and are controlled by this driver.
229 tristate "Qualcomm MSM GPIO v2"
230 depends on GPIOLIB && OF && ARCH_QCOM
232 Say yes here to support the GPIO interface on ARM v7 based
233 Qualcomm MSM chips. Most of the pins on the MSM can be
234 selected for GPIO, and are controlled by this driver.
238 depends on PLAT_ORION
241 select GENERIC_IRQ_CHIP
247 select GENERIC_IRQ_CHIP
253 select GENERIC_IRQ_CHIP
256 tristate "Cavium OCTEON GPIO"
257 depends on GPIOLIB && CAVIUM_OCTEON_SOC
260 Say yes here to support the on-chip GPIO lines on the OCTEON
264 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
265 default y if ARCH_OMAP
267 select GENERIC_IRQ_CHIP
268 select GPIOLIB_IRQCHIP
270 Say yes here to enable GPIO support for TI OMAP SoCs.
273 bool "PrimeCell PL061 GPIO support"
276 select GPIOLIB_IRQCHIP
278 Say yes here to support the PrimeCell PL061 GPIO device
281 bool "PXA GPIO support"
282 depends on ARCH_PXA || ARCH_MMP
284 Say yes here to support the PXA GPIO device
287 tristate "Renesas R-Car GPIO"
288 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
290 Say yes here to support GPIO on Renesas R-Car SoCs.
294 depends on PLAT_SAMSUNG
296 Legacy GPIO support. Use only for platforms without support for
300 tristate "SMSC SCH311x SuperI/O GPIO"
302 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
303 SCH3116 "Super I/O" chipsets.
305 To compile this driver as a module, choose M here: the module will
306 be called gpio-sch311x.
308 config GPIO_SPEAR_SPICS
309 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
310 depends on PLAT_SPEAR
311 select GENERIC_IRQ_CHIP
313 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
316 bool "STA2x11/ConneXt GPIO support"
317 depends on MFD_STA2X11
318 select GENERIC_IRQ_CHIP
320 Say yes here to support the STA2x11/ConneXt GPIO device.
321 The GPIO module has 128 GPIO pins with alternate functions.
324 tristate "GPIO based on SYSCON"
325 depends on MFD_SYSCON && OF
327 Say yes here to support GPIO functionality though SYSCON driver.
330 tristate "TS-5500 DIO blocks and compatibles"
331 depends on TS5500 || COMPILE_TEST
333 This driver supports Digital I/O exposed by pin blocks found on some
334 Technologic Systems platforms. It includes, but is not limited to, 3
335 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
339 bool "Toumaz Xenif TZ1090 GPIO support"
340 depends on SOC_TZ1090
341 select GENERIC_IRQ_CHIP
344 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
346 config GPIO_TZ1090_PDC
347 bool "Toumaz Xenif TZ1090 PDC GPIO support"
348 depends on SOC_TZ1090
351 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
355 depends on ARCH_MXC && SOC_VF610
356 select GPIOLIB_IRQCHIP
358 Say yes here to support Vybrid vf610 GPIOs.
361 bool "APM X-Gene GPIO controller support"
362 depends on ARM64 && OF_GPIO
364 This driver is to support the GPIO block within the APM X-Gene SoC
365 platform's generic flash controller. The GPIO pins are muxed with
366 the generic flash controller's address and data pins. Say yes
367 here to enable the GFC GPIO functionality.
370 bool "Xilinx GPIO support"
371 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
373 Say yes here to support the Xilinx FPGA GPIO device
376 tristate "Xilinx Zynq GPIO support"
378 select GPIOLIB_IRQCHIP
380 Say yes here to support Xilinx Zynq GPIO controller.
383 bool "Xtensa GPIO32 support"
385 depends on HAVE_XTENSA_GPIO32
388 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
389 and EXPSTATE (output) ports
392 tristate "NEC VR4100 series General-purpose I/O Uint support"
393 depends on CPU_VR41XX
395 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
398 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
399 depends on PCI && X86
403 Say yes here to support GPIO interface on Intel Poulsbo SCH,
404 Intel Tunnel Creek processor or Intel Centerton processor.
405 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
406 powered by the core power rail and are turned off during sleep
407 modes (S3 and higher). The remaining four GPIOs are powered by
408 the Intel SCH suspend power supply. These GPIOs remain
409 active during S3. The suspend powered GPIOs can be used to wake the
410 system from the Suspend-to-RAM state.
411 The Intel Tunnel Creek processor has 5 GPIOs powered by the
412 core power rail and 9 from suspend power supply.
413 The Intel Centerton processor has a total of 30 GPIO pins.
414 Twenty-one are powered by the core power rail and 9 from the
415 suspend power supply.
418 tristate "Intel ICH GPIO"
419 depends on PCI && X86
423 Say yes here to support the GPIO functionality of a number of Intel
424 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
425 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
426 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
431 tristate "Intel IOP GPIO"
432 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
434 Say yes here to support the GPIO functionality of a number of Intel
440 tristate "VIA VX855/VX875 GPIO"
445 Support access to the VX855/VX875 GPIO lines through the gpio library.
447 This driver provides common support for accessing the device,
448 additional drivers must be enabled in order to use the
449 functionality of the device.
452 bool "GE FPGA based GPIO"
455 Support for common GPIO functionality provided on some GE Single Board
458 This driver provides basic support (configure as input or output, read
459 and write pin state) for GPIO implemented in a number of GE single
462 config GPIO_LYNXPOINT
463 tristate "Intel Lynxpoint GPIO support"
464 depends on ACPI && X86
465 select GPIOLIB_IRQCHIP
467 driver for GPIO functionality on Intel Lynxpoint PCH chipset
468 Requires ACPI device enumeration code to set up a platform device.
471 tristate "Aeroflex Gaisler GRGPIO support"
476 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
477 VHDL IP core library.
481 select GENERIC_IRQ_CHIP
484 comment "I2C GPIO expanders:"
487 tristate "Wolfson Microelectronics Arizona class devices"
488 depends on MFD_ARIZONA
490 Support for GPIOs on Wolfson Arizona class devices.
492 config GPIO_CRYSTAL_COVE
493 tristate "GPIO support for Crystal Cove PMIC"
494 depends on INTEL_SOC_PMIC
495 select GPIOLIB_IRQCHIP
497 Support for GPIO pins on Crystal Cove PMIC.
499 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
502 This driver can also be built as a module. If so, the module will be
503 called gpio-crystalcove.
506 tristate "TI/National Semiconductor LP3943 GPIO expander"
507 depends on MFD_LP3943
509 GPIO driver for LP3943 MFD.
510 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
511 Open drain outputs are required for this usage.
514 tristate "Maxim MAX7300 GPIO expander"
518 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
521 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
524 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
525 Port Expanders. Each IO port on these chips has a fixed role of
526 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
527 Input and Output (designed by 'P'). The combinations are listed
530 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
531 max7322 (4I4O), max7323 (4P4O)
533 16 bits: max7324 (8I8O), max7325 (8P8O),
534 max7326 (4I12O), max7327 (4P12O)
536 Board setup code must specify the model to use, and the start
537 number for these GPIOs.
539 config GPIO_MAX732X_IRQ
540 bool "Interrupt controller support for MAX732x"
541 depends on GPIO_MAX732X=y
543 Say yes here to enable the max732x to be used as an interrupt
544 controller. It requires the driver to be built in the kernel.
546 config GPIO_MC9S08DZ60
547 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
548 depends on I2C=y && MACH_MX35_3DS
550 Select this to enable the MC9S08DZ60 GPIO driver
553 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
556 Say yes here to provide access to several register-oriented
557 SMBus I/O expanders, made mostly by NXP or TI. Compatible
560 4 bits: pca9536, pca9537
562 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
563 pca9556, pca9557, pca9574, tca6408, xra1202
565 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
570 40 bits: pca9505, pca9698
572 config GPIO_PCA953X_IRQ
573 bool "Interrupt controller support for PCA953x"
574 depends on GPIO_PCA953X=y
575 select GPIOLIB_IRQCHIP
577 Say yes here to enable the pca953x to be used as an interrupt
578 controller. It requires the driver to be built in the kernel.
581 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
585 Say yes here to provide access to most "quasi-bidirectional" I2C
586 GPIO expanders used for additional digital outputs or inputs.
587 Most of these parts are from NXP, though TI is a second source for
588 some of them. Compatible models include:
590 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
591 pca9670, pca9672, pca9674, pca9674a,
594 16 bits: pcf8575, pcf8575c, pca8575,
595 pca9671, pca9673, pca9675
597 Your board setup code will need to declare the expanders in
598 use, and assign numbers to the GPIOs they expose. Those GPIOs
599 can then be used from drivers and other kernel code, just like
600 other GPIOs, but only accessible from task contexts.
602 This driver provides an in-kernel interface to those GPIOs using
603 platform-neutral GPIO calls.
606 bool "RICOH RC5T583 GPIO"
607 depends on MFD_RC5T583
609 Select this option to enable GPIO driver for the Ricoh RC5T583
611 This driver provides the support for driving/reading the gpio pins
612 of RC5T583 device through standard gpio library.
615 bool "Semtech SX150x I2C GPIO expander"
619 Say yes here to provide support for Semtech SX150-series I2C
620 GPIO expanders. Compatible models include:
628 select GPIOLIB_IRQCHIP
630 This enables support for the GPIOs found on the STMPE I/O
634 bool "XWAY STP GPIOs"
637 This enables support for the Serial To Parallel (STP) unit found on
638 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
639 that can be up to 24 bit. This peripheral is aimed at driving leds.
640 Some of the gpios/leds can be auto updated by the soc with dsl and
645 depends on MFD_TC3589X
646 select GPIOLIB_IRQCHIP
648 This enables support for the GPIOs found on the TC3589X
652 tristate "TI TPS65912 GPIO"
653 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
655 This driver supports TPS65912 gpio chip
658 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
659 depends on TWL4030_CORE
661 Say yes here to access the GPIO signals of various multi-function
662 power management chips from Texas Instruments.
665 tristate "TWL6040 GPO"
666 depends on TWL6040_CORE
668 Say yes here to access the GPO signals of twl6040
669 audio chip from Texas Instruments.
672 tristate "WM831x GPIOs"
673 depends on MFD_WM831X
675 Say yes here to access the GPIO signals of WM831x power management
676 chips from Wolfson Microelectronics.
679 tristate "WM8350 GPIOs"
680 depends on MFD_WM8350
682 Say yes here to access the GPIO signals of WM8350 power management
683 chips from Wolfson Microelectronics.
686 tristate "WM8994 GPIOs"
687 depends on MFD_WM8994
689 Say yes here to access the GPIO signals of WM8994 audio hub
690 CODECs from Wolfson Microelectronics.
693 tristate "GPIO Support for ADP5520 PMIC"
694 depends on PMIC_ADP5520
696 This option enables support for on-chip GPIO found
697 on Analog Devices ADP5520 PMICs.
700 tristate "ADP5588 I2C GPIO expander"
703 This option enables support for 18 GPIOs found
704 on Analog Devices ADP5588 GPIO Expanders.
706 config GPIO_ADP5588_IRQ
707 bool "Interrupt controller support for ADP5588"
708 depends on GPIO_ADP5588=y
710 Say yes here to enable the adp5588 to be used as an interrupt
711 controller. It requires the driver to be built in the kernel.
714 tristate "Avionic Design N-bit GPIO expander"
715 depends on I2C && OF_GPIO
716 select GPIOLIB_IRQCHIP
718 This option enables support for N GPIOs found on Avionic Design
719 I2C GPIO expanders. The register space will be extended by powers
720 of two, so the controller will need to accommodate for that. For
721 example: if a controller provides 48 pins, 6 registers will be
722 enough to represent all pins, but the driver will assume a
723 register layout for 64 pins (8 registers).
725 comment "PCI GPIO expanders:"
728 tristate "AMD CS5535/CS5536 GPIO support"
729 depends on MFD_CS5535
731 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
732 can be used for quite a number of things. The CS5535/6 is found on
733 AMD Geode and Lemote Yeeloong devices.
738 tristate "BT8XX GPIO abuser"
739 depends on PCI && VIDEO_BT848=n
741 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
742 as a cheap PCI GPIO card.
744 This chip can be found on Miro, Hauppauge and STB TV-cards.
746 The card needs to be physically altered for using it as a
747 GPIO card. For more information on how to build a GPIO card
748 from a BT8xx TV card, see the documentation file at
749 Documentation/bt8xxgpio.txt
754 tristate "AMD 8111 GPIO driver"
757 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
759 Note, that usually system firmware/ACPI handles GPIO pins on their
760 own and users might easily break their systems with uncarefull usage
765 config GPIO_INTEL_MID
766 bool "Intel Mid GPIO support"
767 depends on PCI && X86
768 select GPIOLIB_IRQCHIP
770 Say Y here to support Intel Mid GPIO.
773 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
774 depends on PCI && (X86_32 || COMPILE_TEST)
775 select GENERIC_IRQ_CHIP
777 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
778 which is an IOH(Input/Output Hub) for x86 embedded processor.
779 This driver can access PCH GPIO device.
781 This driver also can be used for LAPIS Semiconductor IOH(Input/
782 Output Hub), ML7223 and ML7831.
783 ML7223 IOH is for MP(Media Phone) use.
784 ML7831 IOH is for general purpose use.
785 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
786 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
789 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
791 select GENERIC_IRQ_CHIP
793 ML7213 is companion chip for Intel Atom E6xx series.
794 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
795 Hub) which is for IVI(In-Vehicle Infotainment) use.
796 This driver can access the IOH's GPIO device.
798 config GPIO_SODAVILLE
799 bool "Intel Sodaville GPIO support"
800 depends on X86 && PCI && OF
802 select GENERIC_IRQ_CHIP
804 Say Y here to support Intel Sodaville GPIO.
806 config GPIO_TIMBERDALE
807 bool "Support for timberdale GPIO IP"
808 depends on MFD_TIMBERDALE
810 Add support for the GPIO IP in the timberdale FPGA.
813 tristate "RDC R-321x GPIO support"
818 Support for the RDC R321x SoC GPIOs over southbridge
819 PCI configuration space.
821 comment "SPI GPIO expanders:"
824 tristate "Maxim MAX7301 GPIO expander"
825 depends on SPI_MASTER
828 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
831 tristate "Microchip MCP23xxx I/O expander"
832 depends on (SPI_MASTER && !I2C) || I2C
834 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
836 This provides a GPIO interface supporting inputs and outputs.
837 The I2C versions of the chips can be used as interrupt-controller.
840 tristate "Freescale MC33880 high-side/low-side switch"
841 depends on SPI_MASTER
843 SPI driver for Freescale MC33880 high-side/low-side switch.
844 This provides GPIO interface supporting inputs and outputs.
847 tristate "74x164 serial-in/parallel-out 8-bits shift register"
848 depends on SPI_MASTER && OF
850 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
851 shift registers. This driver can be used to provide access
852 to more gpio outputs.
854 comment "AC97 GPIO expanders:"
857 tristate "Philips UCB1400 GPIO"
858 depends on UCB1400_CORE
860 This enables support for the Philips UCB1400 GPIO pins.
861 The UCB1400 is an AC97 audio codec.
863 comment "LPC GPIO expanders:"
866 tristate "Kontron ETX / COMexpress GPIO"
867 depends on MFD_KEMPLD
869 This enables support for the PLD GPIO interface on some Kontron ETX
870 and COMexpress (ETXexpress) modules.
872 This driver can also be built as a module. If so, the module will be
875 comment "MODULbus GPIO expanders:"
878 tristate "Janz VMOD-TTL Digital IO Module"
879 depends on MFD_JANZ_CMODIO
881 This enables support for the Janz VMOD-TTL Digital IO module.
882 This driver provides support for driving the pins in output
883 mode only. Input mode is not supported.
886 bool "TI PALMAS series PMICs GPIO"
887 depends on MFD_PALMAS
889 Select this option to enable GPIO driver for the TI PALMAS
894 depends on MFD_TPS6586X
896 Select this option to enable GPIO driver for the TPS6586X
901 depends on MFD_TPS65910
903 Select this option to enable GPIO driver for the TPS65910
907 bool "Intel MSIC mixed signal gpio support"
908 depends on MFD_INTEL_MSIC
910 Enable support for GPIO on intel MSIC controllers found in
914 bool "Broadcom Kona GPIO"
915 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
917 Turn on GPIO support for Broadcom "Kona" chips.
919 comment "USB GPIO expanders:"
921 config GPIO_VIPERBOARD
922 tristate "Viperboard GPIO a & b support"
923 depends on MFD_VIPERBOARD && USB
925 Say yes here to access the GPIO signals of Nano River
926 Technologies Viperboard. There are two GPIO chips on the
927 board: gpioa and gpiob.
928 See viperboard API specification and Nano
929 River Tech's viperboard.h for detailed meaning
930 of the module parameters.
933 tristate "Diolan DLN2 GPIO support"
935 select GPIOLIB_IRQCHIP
938 Select this option to enable GPIO driver for the Diolan DLN2
941 This driver can also be built as a module. If so, the module
942 will be called gpio-dln2.