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 "GPIO support for Fujitsu MB86S7x Platforms"
202 depends on ARCH_MB86S7X
204 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
207 bool "MOXART GPIO support"
208 depends on ARCH_MOXART
211 Select this option to enable GPIO driver for
212 MOXA ART SoC devices.
216 depends on PPC_MPC52xx
219 bool "MPC512x/MPC8xxx GPIO support"
220 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
221 FSL_SOC_BOOKE || PPC_86xx
223 Say Y here if you're going to use hardware that connects to the
224 MPC512x/831x/834x/837x/8572/8610 GPIOs.
227 tristate "Qualcomm MSM GPIO v1"
228 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
230 Say yes here to support the GPIO interface on ARM v6 based
231 Qualcomm MSM chips. Most of the pins on the MSM can be
232 selected for GPIO, and are controlled by this driver.
235 tristate "Qualcomm MSM GPIO v2"
236 depends on GPIOLIB && OF && ARCH_QCOM
238 Say yes here to support the GPIO interface on ARM v7 based
239 Qualcomm MSM chips. Most of the pins on the MSM can be
240 selected for GPIO, and are controlled by this driver.
244 depends on PLAT_ORION
247 select GENERIC_IRQ_CHIP
253 select GENERIC_IRQ_CHIP
259 select GENERIC_IRQ_CHIP
262 tristate "Cavium OCTEON GPIO"
263 depends on GPIOLIB && CAVIUM_OCTEON_SOC
266 Say yes here to support the on-chip GPIO lines on the OCTEON
270 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
271 default y if ARCH_OMAP
273 select GENERIC_IRQ_CHIP
274 select GPIOLIB_IRQCHIP
276 Say yes here to enable GPIO support for TI OMAP SoCs.
279 bool "PrimeCell PL061 GPIO support"
282 select GPIOLIB_IRQCHIP
284 Say yes here to support the PrimeCell PL061 GPIO device
287 bool "PXA GPIO support"
288 depends on ARCH_PXA || ARCH_MMP
290 Say yes here to support the PXA GPIO device
293 tristate "Renesas R-Car GPIO"
294 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
295 select GPIOLIB_IRQCHIP
297 Say yes here to support GPIO on Renesas R-Car SoCs.
301 depends on PLAT_SAMSUNG
303 Legacy GPIO support. Use only for platforms without support for
307 tristate "SMSC SCH311x SuperI/O GPIO"
309 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
310 SCH3116 "Super I/O" chipsets.
312 To compile this driver as a module, choose M here: the module will
313 be called gpio-sch311x.
315 config GPIO_SPEAR_SPICS
316 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
317 depends on PLAT_SPEAR
318 select GENERIC_IRQ_CHIP
320 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
323 bool "STA2x11/ConneXt GPIO support"
324 depends on MFD_STA2X11
325 select GENERIC_IRQ_CHIP
327 Say yes here to support the STA2x11/ConneXt GPIO device.
328 The GPIO module has 128 GPIO pins with alternate functions.
331 tristate "GPIO based on SYSCON"
332 depends on MFD_SYSCON && OF
334 Say yes here to support GPIO functionality though SYSCON driver.
337 tristate "TS-5500 DIO blocks and compatibles"
338 depends on TS5500 || COMPILE_TEST
340 This driver supports Digital I/O exposed by pin blocks found on some
341 Technologic Systems platforms. It includes, but is not limited to, 3
342 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
346 bool "Toumaz Xenif TZ1090 GPIO support"
347 depends on SOC_TZ1090
348 select GENERIC_IRQ_CHIP
351 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
353 config GPIO_TZ1090_PDC
354 bool "Toumaz Xenif TZ1090 PDC GPIO support"
355 depends on SOC_TZ1090
358 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
362 depends on ARCH_MXC && SOC_VF610
363 select GPIOLIB_IRQCHIP
365 Say yes here to support Vybrid vf610 GPIOs.
368 bool "APM X-Gene GPIO controller support"
369 depends on ARM64 && OF_GPIO
371 This driver is to support the GPIO block within the APM X-Gene SoC
372 platform's generic flash controller. The GPIO pins are muxed with
373 the generic flash controller's address and data pins. Say yes
374 here to enable the GFC GPIO functionality.
377 tristate "APM X-Gene GPIO standby controller support"
378 depends on ARCH_XGENE && OF_GPIO
381 This driver supports the GPIO block within the APM X-Gene
382 Standby Domain. Say yes here to enable the GPIO functionality.
385 tristate "Xilinx GPIO support"
386 depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
388 Say yes here to support the Xilinx FPGA GPIO device
391 tristate "Xilinx Zynq GPIO support"
393 select GPIOLIB_IRQCHIP
395 Say yes here to support Xilinx Zynq GPIO controller.
398 bool "Xtensa GPIO32 support"
400 depends on HAVE_XTENSA_GPIO32
403 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
404 and EXPSTATE (output) ports
407 tristate "NEC VR4100 series General-purpose I/O Uint support"
408 depends on CPU_VR41XX
410 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
413 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
414 depends on PCI && X86
418 Say yes here to support GPIO interface on Intel Poulsbo SCH,
419 Intel Tunnel Creek processor, Intel Centerton processor or
420 Intel Quark X1000 SoC.
422 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
423 powered by the core power rail and are turned off during sleep
424 modes (S3 and higher). The remaining four GPIOs are powered by
425 the Intel SCH suspend power supply. These GPIOs remain
426 active during S3. The suspend powered GPIOs can be used to wake the
427 system from the Suspend-to-RAM state.
429 The Intel Tunnel Creek processor has 5 GPIOs powered by the
430 core power rail and 9 from suspend power supply.
432 The Intel Centerton processor has a total of 30 GPIO pins.
433 Twenty-one are powered by the core power rail and 9 from the
434 suspend power supply.
436 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
437 power well and 6 from the suspend power well.
440 tristate "Intel ICH GPIO"
441 depends on PCI && X86
445 Say yes here to support the GPIO functionality of a number of Intel
446 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
447 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
448 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
453 tristate "Intel IOP GPIO"
454 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
456 Say yes here to support the GPIO functionality of a number of Intel
462 tristate "VIA VX855/VX875 GPIO"
467 Support access to the VX855/VX875 GPIO lines through the gpio library.
469 This driver provides common support for accessing the device,
470 additional drivers must be enabled in order to use the
471 functionality of the device.
474 bool "GE FPGA based GPIO"
478 Support for common GPIO functionality provided on some GE Single Board
481 This driver provides basic support (configure as input or output, read
482 and write pin state) for GPIO implemented in a number of GE single
485 config GPIO_LYNXPOINT
486 tristate "Intel Lynxpoint GPIO support"
487 depends on ACPI && X86
488 select GPIOLIB_IRQCHIP
490 driver for GPIO functionality on Intel Lynxpoint PCH chipset
491 Requires ACPI device enumeration code to set up a platform device.
494 tristate "Aeroflex Gaisler GRGPIO support"
499 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
500 VHDL IP core library.
504 select GENERIC_IRQ_CHIP
507 comment "I2C GPIO expanders:"
510 tristate "Wolfson Microelectronics Arizona class devices"
511 depends on MFD_ARIZONA
513 Support for GPIOs on Wolfson Arizona class devices.
515 config GPIO_CRYSTAL_COVE
516 tristate "GPIO support for Crystal Cove PMIC"
517 depends on INTEL_SOC_PMIC
518 select GPIOLIB_IRQCHIP
520 Support for GPIO pins on Crystal Cove PMIC.
522 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
525 This driver can also be built as a module. If so, the module will be
526 called gpio-crystalcove.
529 tristate "TI/National Semiconductor LP3943 GPIO expander"
530 depends on MFD_LP3943
532 GPIO driver for LP3943 MFD.
533 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
534 Open drain outputs are required for this usage.
537 tristate "Maxim MAX7300 GPIO expander"
541 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
544 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
548 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
549 Port Expanders. Each IO port on these chips has a fixed role of
550 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
551 Input and Output (designed by 'P'). The combinations are listed
554 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
555 max7322 (4I4O), max7323 (4P4O)
557 16 bits: max7324 (8I8O), max7325 (8P8O),
558 max7326 (4I12O), max7327 (4P12O)
560 Board setup code must specify the model to use, and the start
561 number for these GPIOs.
563 config GPIO_MAX732X_IRQ
564 bool "Interrupt controller support for MAX732x"
565 depends on GPIO_MAX732X=y
567 Say yes here to enable the max732x to be used as an interrupt
568 controller. It requires the driver to be built in the kernel.
570 config GPIO_MC9S08DZ60
571 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
572 depends on I2C=y && MACH_MX35_3DS
574 Select this to enable the MC9S08DZ60 GPIO driver
577 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
580 Say yes here to provide access to several register-oriented
581 SMBus I/O expanders, made mostly by NXP or TI. Compatible
584 4 bits: pca9536, pca9537
586 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
587 pca9556, pca9557, pca9574, tca6408, xra1202
589 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
594 40 bits: pca9505, pca9698
596 config GPIO_PCA953X_IRQ
597 bool "Interrupt controller support for PCA953x"
598 depends on GPIO_PCA953X=y
599 select GPIOLIB_IRQCHIP
601 Say yes here to enable the pca953x to be used as an interrupt
602 controller. It requires the driver to be built in the kernel.
605 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
609 Say yes here to provide access to most "quasi-bidirectional" I2C
610 GPIO expanders used for additional digital outputs or inputs.
611 Most of these parts are from NXP, though TI is a second source for
612 some of them. Compatible models include:
614 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
615 pca9670, pca9672, pca9674, pca9674a,
618 16 bits: pcf8575, pcf8575c, pca8575,
619 pca9671, pca9673, pca9675
621 Your board setup code will need to declare the expanders in
622 use, and assign numbers to the GPIOs they expose. Those GPIOs
623 can then be used from drivers and other kernel code, just like
624 other GPIOs, but only accessible from task contexts.
626 This driver provides an in-kernel interface to those GPIOs using
627 platform-neutral GPIO calls.
630 bool "RICOH RC5T583 GPIO"
631 depends on MFD_RC5T583
633 Select this option to enable GPIO driver for the Ricoh RC5T583
635 This driver provides the support for driving/reading the gpio pins
636 of RC5T583 device through standard gpio library.
639 bool "Semtech SX150x I2C GPIO expander"
641 select GPIOLIB_IRQCHIP
644 Say yes here to provide support for Semtech SX150-series I2C
645 GPIO expanders. Compatible models include:
654 select GPIOLIB_IRQCHIP
656 This enables support for the GPIOs found on the STMPE I/O
660 bool "XWAY STP GPIOs"
663 This enables support for the Serial To Parallel (STP) unit found on
664 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
665 that can be up to 24 bit. This peripheral is aimed at driving leds.
666 Some of the gpios/leds can be auto updated by the soc with dsl and
671 depends on MFD_TC3589X
672 select GPIOLIB_IRQCHIP
674 This enables support for the GPIOs found on the TC3589X
678 tristate "TI TPS65912 GPIO"
679 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
681 This driver supports TPS65912 gpio chip
684 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
685 depends on TWL4030_CORE
687 Say yes here to access the GPIO signals of various multi-function
688 power management chips from Texas Instruments.
691 tristate "TWL6040 GPO"
692 depends on TWL6040_CORE
694 Say yes here to access the GPO signals of twl6040
695 audio chip from Texas Instruments.
698 tristate "WM831x GPIOs"
699 depends on MFD_WM831X
701 Say yes here to access the GPIO signals of WM831x power management
702 chips from Wolfson Microelectronics.
705 tristate "WM8350 GPIOs"
706 depends on MFD_WM8350
708 Say yes here to access the GPIO signals of WM8350 power management
709 chips from Wolfson Microelectronics.
712 tristate "WM8994 GPIOs"
713 depends on MFD_WM8994
715 Say yes here to access the GPIO signals of WM8994 audio hub
716 CODECs from Wolfson Microelectronics.
719 tristate "GPIO Support for ADP5520 PMIC"
720 depends on PMIC_ADP5520
722 This option enables support for on-chip GPIO found
723 on Analog Devices ADP5520 PMICs.
726 tristate "ADP5588 I2C GPIO expander"
729 This option enables support for 18 GPIOs found
730 on Analog Devices ADP5588 GPIO Expanders.
732 config GPIO_ADP5588_IRQ
733 bool "Interrupt controller support for ADP5588"
734 depends on GPIO_ADP5588=y
736 Say yes here to enable the adp5588 to be used as an interrupt
737 controller. It requires the driver to be built in the kernel.
740 tristate "Avionic Design N-bit GPIO expander"
741 depends on I2C && OF_GPIO
742 select GPIOLIB_IRQCHIP
744 This option enables support for N GPIOs found on Avionic Design
745 I2C GPIO expanders. The register space will be extended by powers
746 of two, so the controller will need to accommodate for that. For
747 example: if a controller provides 48 pins, 6 registers will be
748 enough to represent all pins, but the driver will assume a
749 register layout for 64 pins (8 registers).
751 comment "PCI GPIO expanders:"
754 tristate "AMD CS5535/CS5536 GPIO support"
755 depends on MFD_CS5535
757 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
758 can be used for quite a number of things. The CS5535/6 is found on
759 AMD Geode and Lemote Yeeloong devices.
764 tristate "BT8XX GPIO abuser"
765 depends on PCI && VIDEO_BT848=n
767 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
768 as a cheap PCI GPIO card.
770 This chip can be found on Miro, Hauppauge and STB TV-cards.
772 The card needs to be physically altered for using it as a
773 GPIO card. For more information on how to build a GPIO card
774 from a BT8xx TV card, see the documentation file at
775 Documentation/bt8xxgpio.txt
780 tristate "AMD 8111 GPIO driver"
783 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
785 Note, that usually system firmware/ACPI handles GPIO pins on their
786 own and users might easily break their systems with uncarefull usage
791 config GPIO_INTEL_MID
792 bool "Intel Mid GPIO support"
793 depends on PCI && X86
794 select GPIOLIB_IRQCHIP
796 Say Y here to support Intel Mid GPIO.
799 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
800 depends on PCI && (X86_32 || COMPILE_TEST)
801 select GENERIC_IRQ_CHIP
803 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
804 which is an IOH(Input/Output Hub) for x86 embedded processor.
805 This driver can access PCH GPIO device.
807 This driver also can be used for LAPIS Semiconductor IOH(Input/
808 Output Hub), ML7223 and ML7831.
809 ML7223 IOH is for MP(Media Phone) use.
810 ML7831 IOH is for general purpose use.
811 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
812 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
815 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
817 select GENERIC_IRQ_CHIP
819 ML7213 is companion chip for Intel Atom E6xx series.
820 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
821 Hub) which is for IVI(In-Vehicle Infotainment) use.
822 This driver can access the IOH's GPIO device.
824 config GPIO_SODAVILLE
825 bool "Intel Sodaville GPIO support"
826 depends on X86 && PCI && OF
828 select GENERIC_IRQ_CHIP
830 Say Y here to support Intel Sodaville GPIO.
832 config GPIO_TIMBERDALE
833 bool "Support for timberdale GPIO IP"
834 depends on MFD_TIMBERDALE
836 Add support for the GPIO IP in the timberdale FPGA.
839 tristate "RDC R-321x GPIO support"
844 Support for the RDC R321x SoC GPIOs over southbridge
845 PCI configuration space.
847 comment "SPI GPIO expanders:"
850 tristate "Maxim MAX7301 GPIO expander"
851 depends on SPI_MASTER
854 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
857 tristate "Microchip MCP23xxx I/O expander"
858 depends on (SPI_MASTER && !I2C) || I2C
860 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
862 This provides a GPIO interface supporting inputs and outputs.
863 The I2C versions of the chips can be used as interrupt-controller.
866 tristate "Freescale MC33880 high-side/low-side switch"
867 depends on SPI_MASTER
869 SPI driver for Freescale MC33880 high-side/low-side switch.
870 This provides GPIO interface supporting inputs and outputs.
873 tristate "74x164 serial-in/parallel-out 8-bits shift register"
874 depends on SPI_MASTER && OF
876 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
877 shift registers. This driver can be used to provide access
878 to more gpio outputs.
880 comment "AC97 GPIO expanders:"
883 tristate "Philips UCB1400 GPIO"
884 depends on UCB1400_CORE
886 This enables support for the Philips UCB1400 GPIO pins.
887 The UCB1400 is an AC97 audio codec.
889 comment "LPC GPIO expanders:"
892 tristate "Kontron ETX / COMexpress GPIO"
893 depends on MFD_KEMPLD
895 This enables support for the PLD GPIO interface on some Kontron ETX
896 and COMexpress (ETXexpress) modules.
898 This driver can also be built as a module. If so, the module will be
901 comment "MODULbus GPIO expanders:"
904 tristate "Janz VMOD-TTL Digital IO Module"
905 depends on MFD_JANZ_CMODIO
907 This enables support for the Janz VMOD-TTL Digital IO module.
908 This driver provides support for driving the pins in output
909 mode only. Input mode is not supported.
912 bool "TI PALMAS series PMICs GPIO"
913 depends on MFD_PALMAS
915 Select this option to enable GPIO driver for the TI PALMAS
920 depends on MFD_TPS6586X
922 Select this option to enable GPIO driver for the TPS6586X
927 depends on MFD_TPS65910
929 Select this option to enable GPIO driver for the TPS65910
933 bool "Intel MSIC mixed signal gpio support"
934 depends on MFD_INTEL_MSIC
936 Enable support for GPIO on intel MSIC controllers found in
940 bool "Broadcom Kona GPIO"
941 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
943 Turn on GPIO support for Broadcom "Kona" chips.
945 comment "USB GPIO expanders:"
947 config GPIO_VIPERBOARD
948 tristate "Viperboard GPIO a & b support"
949 depends on MFD_VIPERBOARD && USB
951 Say yes here to access the GPIO signals of Nano River
952 Technologies Viperboard. There are two GPIO chips on the
953 board: gpioa and gpiob.
954 See viperboard API specification and Nano
955 River Tech's viperboard.h for detailed meaning
956 of the module parameters.
959 tristate "Diolan DLN2 GPIO support"
961 select GPIOLIB_IRQCHIP
964 Select this option to enable GPIO driver for the Diolan DLN2
967 This driver can also be built as a module. If so, the module
968 will be called gpio-dln2.