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
204 Select this option to enable GPIO driver for
205 MOXA ART SoC devices.
209 depends on PPC_MPC52xx
212 bool "MPC512x/MPC8xxx GPIO support"
213 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
214 FSL_SOC_BOOKE || PPC_86xx
216 Say Y here if you're going to use hardware that connects to the
217 MPC512x/831x/834x/837x/8572/8610 GPIOs.
220 tristate "Qualcomm MSM GPIO v1"
221 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
223 Say yes here to support the GPIO interface on ARM v6 based
224 Qualcomm MSM chips. Most of the pins on the MSM can be
225 selected for GPIO, and are controlled by this driver.
228 tristate "Qualcomm MSM GPIO v2"
229 depends on GPIOLIB && OF && ARCH_QCOM
231 Say yes here to support the GPIO interface on ARM v7 based
232 Qualcomm MSM chips. Most of the pins on the MSM can be
233 selected for GPIO, and are controlled by this driver.
237 depends on PLAT_ORION
240 select GENERIC_IRQ_CHIP
246 select GENERIC_IRQ_CHIP
252 select GENERIC_IRQ_CHIP
255 tristate "Cavium OCTEON GPIO"
256 depends on GPIOLIB && CAVIUM_OCTEON_SOC
259 Say yes here to support the on-chip GPIO lines on the OCTEON
263 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
264 default y if ARCH_OMAP
266 select GENERIC_IRQ_CHIP
267 select GPIOLIB_IRQCHIP
269 Say yes here to enable GPIO support for TI OMAP SoCs.
272 bool "PrimeCell PL061 GPIO support"
275 select GPIOLIB_IRQCHIP
277 Say yes here to support the PrimeCell PL061 GPIO device
280 bool "PXA GPIO support"
281 depends on ARCH_PXA || ARCH_MMP
283 Say yes here to support the PXA GPIO device
286 tristate "Renesas R-Car GPIO"
287 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
289 Say yes here to support GPIO on Renesas R-Car SoCs.
293 depends on PLAT_SAMSUNG
295 Legacy GPIO support. Use only for platforms without support for
299 tristate "SMSC SCH311x SuperI/O GPIO"
301 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
302 SCH3116 "Super I/O" chipsets.
304 To compile this driver as a module, choose M here: the module will
305 be called gpio-sch311x.
307 config GPIO_SPEAR_SPICS
308 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
309 depends on PLAT_SPEAR
310 select GENERIC_IRQ_CHIP
312 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
315 bool "STA2x11/ConneXt GPIO support"
316 depends on MFD_STA2X11
317 select GENERIC_IRQ_CHIP
319 Say yes here to support the STA2x11/ConneXt GPIO device.
320 The GPIO module has 128 GPIO pins with alternate functions.
323 tristate "GPIO based on SYSCON"
324 depends on MFD_SYSCON && OF
326 Say yes here to support GPIO functionality though SYSCON driver.
329 tristate "TS-5500 DIO blocks and compatibles"
330 depends on TS5500 || COMPILE_TEST
332 This driver supports Digital I/O exposed by pin blocks found on some
333 Technologic Systems platforms. It includes, but is not limited to, 3
334 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
338 bool "Toumaz Xenif TZ1090 GPIO support"
339 depends on SOC_TZ1090
340 select GENERIC_IRQ_CHIP
343 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
345 config GPIO_TZ1090_PDC
346 bool "Toumaz Xenif TZ1090 PDC GPIO support"
347 depends on SOC_TZ1090
350 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
354 depends on ARCH_MXC && SOC_VF610
355 select GPIOLIB_IRQCHIP
357 Say yes here to support Vybrid vf610 GPIOs.
360 bool "APM X-Gene GPIO controller support"
361 depends on ARM64 && OF_GPIO
363 This driver is to support the GPIO block within the APM X-Gene SoC
364 platform's generic flash controller. The GPIO pins are muxed with
365 the generic flash controller's address and data pins. Say yes
366 here to enable the GFC GPIO functionality.
369 bool "Xilinx GPIO support"
370 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
372 Say yes here to support the Xilinx FPGA GPIO device
375 tristate "Xilinx Zynq GPIO support"
377 select GPIOLIB_IRQCHIP
379 Say yes here to support Xilinx Zynq GPIO controller.
382 bool "Xtensa GPIO32 support"
384 depends on HAVE_XTENSA_GPIO32
387 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
388 and EXPSTATE (output) ports
391 tristate "NEC VR4100 series General-purpose I/O Uint support"
392 depends on CPU_VR41XX
394 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
397 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
398 depends on PCI && X86
402 Say yes here to support GPIO interface on Intel Poulsbo SCH,
403 Intel Tunnel Creek processor or Intel Centerton processor.
404 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
405 powered by the core power rail and are turned off during sleep
406 modes (S3 and higher). The remaining four GPIOs are powered by
407 the Intel SCH suspend power supply. These GPIOs remain
408 active during S3. The suspend powered GPIOs can be used to wake the
409 system from the Suspend-to-RAM state.
410 The Intel Tunnel Creek processor has 5 GPIOs powered by the
411 core power rail and 9 from suspend power supply.
412 The Intel Centerton processor has a total of 30 GPIO pins.
413 Twenty-one are powered by the core power rail and 9 from the
414 suspend power supply.
417 tristate "Intel ICH GPIO"
418 depends on PCI && X86
422 Say yes here to support the GPIO functionality of a number of Intel
423 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
424 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
425 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
430 tristate "Intel IOP GPIO"
431 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
433 Say yes here to support the GPIO functionality of a number of Intel
439 tristate "VIA VX855/VX875 GPIO"
444 Support access to the VX855/VX875 GPIO lines through the gpio library.
446 This driver provides common support for accessing the device,
447 additional drivers must be enabled in order to use the
448 functionality of the device.
451 bool "GE FPGA based GPIO"
454 Support for common GPIO functionality provided on some GE Single Board
457 This driver provides basic support (configure as input or output, read
458 and write pin state) for GPIO implemented in a number of GE single
461 config GPIO_LYNXPOINT
462 tristate "Intel Lynxpoint GPIO support"
463 depends on ACPI && X86
464 select GPIOLIB_IRQCHIP
466 driver for GPIO functionality on Intel Lynxpoint PCH chipset
467 Requires ACPI device enumeration code to set up a platform device.
470 tristate "Aeroflex Gaisler GRGPIO support"
475 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
476 VHDL IP core library.
480 select GENERIC_IRQ_CHIP
483 comment "I2C GPIO expanders:"
486 tristate "Wolfson Microelectronics Arizona class devices"
487 depends on MFD_ARIZONA
489 Support for GPIOs on Wolfson Arizona class devices.
491 config GPIO_CRYSTAL_COVE
492 tristate "GPIO support for Crystal Cove PMIC"
493 depends on INTEL_SOC_PMIC
494 select GPIOLIB_IRQCHIP
496 Support for GPIO pins on Crystal Cove PMIC.
498 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
501 This driver can also be built as a module. If so, the module will be
502 called gpio-crystalcove.
505 tristate "TI/National Semiconductor LP3943 GPIO expander"
506 depends on MFD_LP3943
508 GPIO driver for LP3943 MFD.
509 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
510 Open drain outputs are required for this usage.
513 tristate "Maxim MAX7300 GPIO expander"
517 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
520 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
523 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
524 Port Expanders. Each IO port on these chips has a fixed role of
525 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
526 Input and Output (designed by 'P'). The combinations are listed
529 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
530 max7322 (4I4O), max7323 (4P4O)
532 16 bits: max7324 (8I8O), max7325 (8P8O),
533 max7326 (4I12O), max7327 (4P12O)
535 Board setup code must specify the model to use, and the start
536 number for these GPIOs.
538 config GPIO_MAX732X_IRQ
539 bool "Interrupt controller support for MAX732x"
540 depends on GPIO_MAX732X=y
542 Say yes here to enable the max732x to be used as an interrupt
543 controller. It requires the driver to be built in the kernel.
545 config GPIO_MC9S08DZ60
546 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
547 depends on I2C=y && MACH_MX35_3DS
549 Select this to enable the MC9S08DZ60 GPIO driver
552 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
555 Say yes here to provide access to several register-oriented
556 SMBus I/O expanders, made mostly by NXP or TI. Compatible
559 4 bits: pca9536, pca9537
561 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
562 pca9556, pca9557, pca9574, tca6408, xra1202
564 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
569 40 bits: pca9505, pca9698
571 config GPIO_PCA953X_IRQ
572 bool "Interrupt controller support for PCA953x"
573 depends on GPIO_PCA953X=y
574 select GPIOLIB_IRQCHIP
576 Say yes here to enable the pca953x to be used as an interrupt
577 controller. It requires the driver to be built in the kernel.
580 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
584 Say yes here to provide access to most "quasi-bidirectional" I2C
585 GPIO expanders used for additional digital outputs or inputs.
586 Most of these parts are from NXP, though TI is a second source for
587 some of them. Compatible models include:
589 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
590 pca9670, pca9672, pca9674, pca9674a,
593 16 bits: pcf8575, pcf8575c, pca8575,
594 pca9671, pca9673, pca9675
596 Your board setup code will need to declare the expanders in
597 use, and assign numbers to the GPIOs they expose. Those GPIOs
598 can then be used from drivers and other kernel code, just like
599 other GPIOs, but only accessible from task contexts.
601 This driver provides an in-kernel interface to those GPIOs using
602 platform-neutral GPIO calls.
605 bool "RICOH RC5T583 GPIO"
606 depends on MFD_RC5T583
608 Select this option to enable GPIO driver for the Ricoh RC5T583
610 This driver provides the support for driving/reading the gpio pins
611 of RC5T583 device through standard gpio library.
614 bool "Semtech SX150x I2C GPIO expander"
618 Say yes here to provide support for Semtech SX150-series I2C
619 GPIO expanders. Compatible models include:
627 select GPIOLIB_IRQCHIP
629 This enables support for the GPIOs found on the STMPE I/O
633 bool "XWAY STP GPIOs"
636 This enables support for the Serial To Parallel (STP) unit found on
637 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
638 that can be up to 24 bit. This peripheral is aimed at driving leds.
639 Some of the gpios/leds can be auto updated by the soc with dsl and
644 depends on MFD_TC3589X
645 select GPIOLIB_IRQCHIP
647 This enables support for the GPIOs found on the TC3589X
651 tristate "TI TPS65912 GPIO"
652 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
654 This driver supports TPS65912 gpio chip
657 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
658 depends on TWL4030_CORE
660 Say yes here to access the GPIO signals of various multi-function
661 power management chips from Texas Instruments.
664 tristate "TWL6040 GPO"
665 depends on TWL6040_CORE
667 Say yes here to access the GPO signals of twl6040
668 audio chip from Texas Instruments.
671 tristate "WM831x GPIOs"
672 depends on MFD_WM831X
674 Say yes here to access the GPIO signals of WM831x power management
675 chips from Wolfson Microelectronics.
678 tristate "WM8350 GPIOs"
679 depends on MFD_WM8350
681 Say yes here to access the GPIO signals of WM8350 power management
682 chips from Wolfson Microelectronics.
685 tristate "WM8994 GPIOs"
686 depends on MFD_WM8994
688 Say yes here to access the GPIO signals of WM8994 audio hub
689 CODECs from Wolfson Microelectronics.
692 tristate "GPIO Support for ADP5520 PMIC"
693 depends on PMIC_ADP5520
695 This option enables support for on-chip GPIO found
696 on Analog Devices ADP5520 PMICs.
699 tristate "ADP5588 I2C GPIO expander"
702 This option enables support for 18 GPIOs found
703 on Analog Devices ADP5588 GPIO Expanders.
705 config GPIO_ADP5588_IRQ
706 bool "Interrupt controller support for ADP5588"
707 depends on GPIO_ADP5588=y
709 Say yes here to enable the adp5588 to be used as an interrupt
710 controller. It requires the driver to be built in the kernel.
713 tristate "Avionic Design N-bit GPIO expander"
714 depends on I2C && OF_GPIO
715 select GPIOLIB_IRQCHIP
717 This option enables support for N GPIOs found on Avionic Design
718 I2C GPIO expanders. The register space will be extended by powers
719 of two, so the controller will need to accommodate for that. For
720 example: if a controller provides 48 pins, 6 registers will be
721 enough to represent all pins, but the driver will assume a
722 register layout for 64 pins (8 registers).
724 comment "PCI GPIO expanders:"
727 tristate "AMD CS5535/CS5536 GPIO support"
728 depends on MFD_CS5535
730 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
731 can be used for quite a number of things. The CS5535/6 is found on
732 AMD Geode and Lemote Yeeloong devices.
737 tristate "BT8XX GPIO abuser"
738 depends on PCI && VIDEO_BT848=n
740 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
741 as a cheap PCI GPIO card.
743 This chip can be found on Miro, Hauppauge and STB TV-cards.
745 The card needs to be physically altered for using it as a
746 GPIO card. For more information on how to build a GPIO card
747 from a BT8xx TV card, see the documentation file at
748 Documentation/bt8xxgpio.txt
753 tristate "AMD 8111 GPIO driver"
756 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
758 Note, that usually system firmware/ACPI handles GPIO pins on their
759 own and users might easily break their systems with uncarefull usage
764 config GPIO_INTEL_MID
765 bool "Intel Mid GPIO support"
766 depends on PCI && X86
767 select GPIOLIB_IRQCHIP
769 Say Y here to support Intel Mid GPIO.
772 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
773 depends on PCI && (X86_32 || COMPILE_TEST)
774 select GENERIC_IRQ_CHIP
776 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
777 which is an IOH(Input/Output Hub) for x86 embedded processor.
778 This driver can access PCH GPIO device.
780 This driver also can be used for LAPIS Semiconductor IOH(Input/
781 Output Hub), ML7223 and ML7831.
782 ML7223 IOH is for MP(Media Phone) use.
783 ML7831 IOH is for general purpose use.
784 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
785 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
788 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
790 select GENERIC_IRQ_CHIP
792 ML7213 is companion chip for Intel Atom E6xx series.
793 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
794 Hub) which is for IVI(In-Vehicle Infotainment) use.
795 This driver can access the IOH's GPIO device.
797 config GPIO_SODAVILLE
798 bool "Intel Sodaville GPIO support"
799 depends on X86 && PCI && OF
801 select GENERIC_IRQ_CHIP
803 Say Y here to support Intel Sodaville GPIO.
805 config GPIO_TIMBERDALE
806 bool "Support for timberdale GPIO IP"
807 depends on MFD_TIMBERDALE
809 Add support for the GPIO IP in the timberdale FPGA.
812 tristate "RDC R-321x GPIO support"
817 Support for the RDC R321x SoC GPIOs over southbridge
818 PCI configuration space.
820 comment "SPI GPIO expanders:"
823 tristate "Maxim MAX7301 GPIO expander"
824 depends on SPI_MASTER
827 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
830 tristate "Microchip MCP23xxx I/O expander"
831 depends on (SPI_MASTER && !I2C) || I2C
833 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
835 This provides a GPIO interface supporting inputs and outputs.
836 The I2C versions of the chips can be used as interrupt-controller.
839 tristate "Freescale MC33880 high-side/low-side switch"
840 depends on SPI_MASTER
842 SPI driver for Freescale MC33880 high-side/low-side switch.
843 This provides GPIO interface supporting inputs and outputs.
846 tristate "74x164 serial-in/parallel-out 8-bits shift register"
847 depends on SPI_MASTER && OF
849 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
850 shift registers. This driver can be used to provide access
851 to more gpio outputs.
853 comment "AC97 GPIO expanders:"
856 tristate "Philips UCB1400 GPIO"
857 depends on UCB1400_CORE
859 This enables support for the Philips UCB1400 GPIO pins.
860 The UCB1400 is an AC97 audio codec.
862 comment "LPC GPIO expanders:"
865 tristate "Kontron ETX / COMexpress GPIO"
866 depends on MFD_KEMPLD
868 This enables support for the PLD GPIO interface on some Kontron ETX
869 and COMexpress (ETXexpress) modules.
871 This driver can also be built as a module. If so, the module will be
874 comment "MODULbus GPIO expanders:"
877 tristate "Janz VMOD-TTL Digital IO Module"
878 depends on MFD_JANZ_CMODIO
880 This enables support for the Janz VMOD-TTL Digital IO module.
881 This driver provides support for driving the pins in output
882 mode only. Input mode is not supported.
885 bool "TI PALMAS series PMICs GPIO"
886 depends on MFD_PALMAS
888 Select this option to enable GPIO driver for the TI PALMAS
893 depends on MFD_TPS6586X
895 Select this option to enable GPIO driver for the TPS6586X
900 depends on MFD_TPS65910
902 Select this option to enable GPIO driver for the TPS65910
906 bool "Intel MSIC mixed signal gpio support"
907 depends on MFD_INTEL_MSIC
909 Enable support for GPIO on intel MSIC controllers found in
913 bool "Broadcom Kona GPIO"
914 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
916 Turn on GPIO support for Broadcom "Kona" chips.
918 comment "USB GPIO expanders:"
920 config GPIO_VIPERBOARD
921 tristate "Viperboard GPIO a & b support"
922 depends on MFD_VIPERBOARD && USB
924 Say yes here to access the GPIO signals of Nano River
925 Technologies Viperboard. There are two GPIO chips on the
926 board: gpioa and gpiob.
927 See viperboard API specification and Nano
928 River Tech's viperboard.h for detailed meaning
929 of the module parameters.
932 tristate "Diolan DLN2 GPIO support"
934 select GPIOLIB_IRQCHIP
937 Select this option to enable GPIO driver for the Diolan DLN2
940 This driver can also be built as a module. If so, the module
941 will be called gpio-dln2.