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
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"
117 select GPIOLIB_IRQCHIP
119 Say Y or M here to build support for the Altera PIO device.
121 If driver is built as a module it will be called gpio-altera.
124 bool "Broadcom Kona GPIO"
125 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
127 Turn on GPIO support for Broadcom "Kona" chips.
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.
144 tristate "Synopsys DesignWare APB GPIO driver"
146 select GENERIC_IRQ_CHIP
148 Say Y or M here to build support for the Synopsys DesignWare APB
152 tristate "Emma Mobile GPIO"
153 depends on ARM && OF_GPIO
155 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
159 depends on ARCH_EP93XX
163 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
166 This option enables support for GPIOs found on Fintek Super-I/O
167 chips F71869, F71869A, F71882FG and F71889F.
169 To compile this driver as a module, choose M here: the module will
170 be called f7188x-gpio.
173 bool "GE FPGA based GPIO"
177 Support for common GPIO functionality provided on some GE Single Board
180 This driver provides basic support (configure as input or output, read
181 and write pin state) for GPIO implemented in a number of GE single
184 config GPIO_GENERIC_PLATFORM
185 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
188 Say yes here to support basic platform_device memory-mapped GPIO controllers.
191 tristate "Aeroflex Gaisler GRGPIO support"
196 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
197 VHDL IP core library.
200 tristate "Intel ICH GPIO"
201 depends on PCI && X86
205 Say yes here to support the GPIO functionality of a number of Intel
206 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
207 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
208 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
213 tristate "Intel IOP GPIO"
214 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
216 Say yes here to support the GPIO functionality of a number of Intel
222 tristate "IT8761E GPIO support"
223 depends on X86 # unconditional access to IO space.
225 Say yes here to support GPIO functionality of IT8761E super I/O chip.
228 bool "Loongson-2/3 GPIO support"
229 depends on CPU_LOONGSON2 || CPU_LOONGSON3
231 driver for GPIO functionality on Loongson-2F/3A/3B processors.
233 config GPIO_LYNXPOINT
234 tristate "Intel Lynxpoint GPIO support"
235 depends on ACPI && X86
236 select GPIOLIB_IRQCHIP
238 driver for GPIO functionality on Intel Lynxpoint PCH chipset
239 Requires ACPI device enumeration code to set up a platform device.
242 bool "GPIO support for Fujitsu MB86S7x Platforms"
243 depends on ARCH_MB86S7X
245 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
247 config GPIO_MM_LANTIQ
248 bool "Lantiq Memory mapped GPIOs"
249 depends on LANTIQ && SOC_XWAY
251 This enables support for memory mapped GPIOs on the External Bus Unit
252 (EBU) found on Lantiq SoCs. The gpios are output only as they are
253 created by attaching a 16bit latch to the bus.
256 bool "MOXART GPIO support"
257 depends on ARCH_MOXART
260 Select this option to enable GPIO driver for
261 MOXA ART SoC devices.
265 depends on PPC_MPC52xx
268 bool "MPC512x/MPC8xxx GPIO support"
269 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
270 FSL_SOC_BOOKE || PPC_86xx
272 Say Y here if you're going to use hardware that connects to the
273 MPC512x/831x/834x/837x/8572/8610 GPIOs.
276 tristate "Qualcomm MSM GPIO v1"
277 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
279 Say yes here to support the GPIO interface on ARM v6 based
280 Qualcomm MSM chips. Most of the pins on the MSM can be
281 selected for GPIO, and are controlled by this driver.
284 tristate "Qualcomm MSM GPIO v2"
285 depends on GPIOLIB && OF && ARCH_QCOM
287 Say yes here to support the GPIO interface on ARM v7 based
288 Qualcomm MSM chips. Most of the pins on the MSM can be
289 selected for GPIO, and are controlled by this driver.
293 depends on PLAT_ORION
296 select GENERIC_IRQ_CHIP
302 select GENERIC_IRQ_CHIP
308 select GENERIC_IRQ_CHIP
311 tristate "Cavium OCTEON GPIO"
312 depends on GPIOLIB && CAVIUM_OCTEON_SOC
315 Say yes here to support the on-chip GPIO lines on the OCTEON
319 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
320 default y if ARCH_OMAP
322 select GENERIC_IRQ_CHIP
323 select GPIOLIB_IRQCHIP
325 Say yes here to enable GPIO support for TI OMAP SoCs.
328 bool "PrimeCell PL061 GPIO support"
331 select GPIOLIB_IRQCHIP
333 Say yes here to support the PrimeCell PL061 GPIO device
336 bool "PXA GPIO support"
337 depends on ARCH_PXA || ARCH_MMP
339 Say yes here to support the PXA GPIO device
342 tristate "Renesas R-Car GPIO"
343 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
344 select GPIOLIB_IRQCHIP
346 Say yes here to support GPIO on Renesas R-Car SoCs.
350 depends on PLAT_SAMSUNG
352 Legacy GPIO support. Use only for platforms without support for
356 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
357 depends on PCI && X86
361 Say yes here to support GPIO interface on Intel Poulsbo SCH,
362 Intel Tunnel Creek processor, Intel Centerton processor or
363 Intel Quark X1000 SoC.
365 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
366 powered by the core power rail and are turned off during sleep
367 modes (S3 and higher). The remaining four GPIOs are powered by
368 the Intel SCH suspend power supply. These GPIOs remain
369 active during S3. The suspend powered GPIOs can be used to wake the
370 system from the Suspend-to-RAM state.
372 The Intel Tunnel Creek processor has 5 GPIOs powered by the
373 core power rail and 9 from suspend power supply.
375 The Intel Centerton processor has a total of 30 GPIO pins.
376 Twenty-one are powered by the core power rail and 9 from the
377 suspend power supply.
379 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
380 power well and 6 from the suspend power well.
383 tristate "SMSC SCH311x SuperI/O GPIO"
385 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
386 SCH3116 "Super I/O" chipsets.
388 To compile this driver as a module, choose M here: the module will
389 be called gpio-sch311x.
391 config GPIO_SPEAR_SPICS
392 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
393 depends on PLAT_SPEAR
394 select GENERIC_IRQ_CHIP
396 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
399 bool "STA2x11/ConneXt GPIO support"
400 depends on MFD_STA2X11
401 select GENERIC_IRQ_CHIP
403 Say yes here to support the STA2x11/ConneXt GPIO device.
404 The GPIO module has 128 GPIO pins with alternate functions.
407 bool "XWAY STP GPIOs"
410 This enables support for the Serial To Parallel (STP) unit found on
411 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
412 that can be up to 24 bit. This peripheral is aimed at driving leds.
413 Some of the gpios/leds can be auto updated by the soc with dsl and
417 tristate "GPIO based on SYSCON"
418 depends on MFD_SYSCON && OF
420 Say yes here to support GPIO functionality though SYSCON driver.
424 select GENERIC_IRQ_CHIP
428 tristate "TS-5500 DIO blocks and compatibles"
429 depends on TS5500 || COMPILE_TEST
431 This driver supports Digital I/O exposed by pin blocks found on some
432 Technologic Systems platforms. It includes, but is not limited to, 3
433 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
437 bool "Toumaz Xenif TZ1090 GPIO support"
438 depends on SOC_TZ1090
439 select GENERIC_IRQ_CHIP
442 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
444 config GPIO_TZ1090_PDC
445 bool "Toumaz Xenif TZ1090 PDC GPIO support"
446 depends on SOC_TZ1090
449 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
453 depends on ARCH_MXC && SOC_VF610
454 select GPIOLIB_IRQCHIP
456 Say yes here to support Vybrid vf610 GPIOs.
459 tristate "NEC VR4100 series General-purpose I/O Uint support"
460 depends on CPU_VR41XX
462 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
465 tristate "VIA VX855/VX875 GPIO"
470 Support access to the VX855/VX875 GPIO lines through the gpio library.
472 This driver provides common support for accessing the device,
473 additional drivers must be enabled in order to use the
474 functionality of the device.
477 bool "APM X-Gene GPIO controller support"
478 depends on ARM64 && OF_GPIO
480 This driver is to support the GPIO block within the APM X-Gene SoC
481 platform's generic flash controller. The GPIO pins are muxed with
482 the generic flash controller's address and data pins. Say yes
483 here to enable the GFC GPIO functionality.
486 tristate "APM X-Gene GPIO standby controller support"
487 depends on ARCH_XGENE && OF_GPIO
490 This driver supports the GPIO block within the APM X-Gene
491 Standby Domain. Say yes here to enable the GPIO functionality.
494 tristate "Xilinx GPIO support"
495 depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
497 Say yes here to support the Xilinx FPGA GPIO device
500 bool "Xtensa GPIO32 support"
502 depends on HAVE_XTENSA_GPIO32
505 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
506 and EXPSTATE (output) ports
509 bool "LSI ZEVIO SoC memory mapped GPIOs"
510 depends on ARM && OF_GPIO
512 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
515 tristate "Xilinx Zynq GPIO support"
517 select GPIOLIB_IRQCHIP
519 Say yes here to support Xilinx Zynq GPIO controller.
523 menu "I2C GPIO expanders"
527 tristate "ADP5588 I2C GPIO expander"
530 This option enables support for 18 GPIOs found
531 on Analog Devices ADP5588 GPIO Expanders.
533 config GPIO_ADP5588_IRQ
534 bool "Interrupt controller support for ADP5588"
535 depends on GPIO_ADP5588=y
537 Say yes here to enable the adp5588 to be used as an interrupt
538 controller. It requires the driver to be built in the kernel.
541 tristate "Avionic Design N-bit GPIO expander"
542 depends on I2C && OF_GPIO
543 select GPIOLIB_IRQCHIP
545 This option enables support for N GPIOs found on Avionic Design
546 I2C GPIO expanders. The register space will be extended by powers
547 of two, so the controller will need to accommodate for that. For
548 example: if a controller provides 48 pins, 6 registers will be
549 enough to represent all pins, but the driver will assume a
550 register layout for 64 pins (8 registers).
553 tristate "Maxim MAX7300 GPIO expander"
557 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
560 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
563 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
564 Port Expanders. Each IO port on these chips has a fixed role of
565 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
566 Input and Output (designed by 'P'). The combinations are listed
569 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
570 max7322 (4I4O), max7323 (4P4O)
572 16 bits: max7324 (8I8O), max7325 (8P8O),
573 max7326 (4I12O), max7327 (4P12O)
575 Board setup code must specify the model to use, and the start
576 number for these GPIOs.
578 config GPIO_MAX732X_IRQ
579 bool "Interrupt controller support for MAX732x"
580 depends on GPIO_MAX732X=y
581 select GPIOLIB_IRQCHIP
583 Say yes here to enable the max732x to be used as an interrupt
584 controller. It requires the driver to be built in the kernel.
586 config GPIO_MC9S08DZ60
587 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
588 depends on I2C=y && MACH_MX35_3DS
590 Select this to enable the MC9S08DZ60 GPIO driver
593 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
596 Say yes here to provide access to several register-oriented
597 SMBus I/O expanders, made mostly by NXP or TI. Compatible
600 4 bits: pca9536, pca9537
602 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
603 pca9556, pca9557, pca9574, tca6408, xra1202
605 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
610 40 bits: pca9505, pca9698
612 config GPIO_PCA953X_IRQ
613 bool "Interrupt controller support for PCA953x"
614 depends on GPIO_PCA953X=y
615 select GPIOLIB_IRQCHIP
617 Say yes here to enable the pca953x to be used as an interrupt
618 controller. It requires the driver to be built in the kernel.
621 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
623 select GPIOLIB_IRQCHIP
626 Say yes here to provide access to most "quasi-bidirectional" I2C
627 GPIO expanders used for additional digital outputs or inputs.
628 Most of these parts are from NXP, though TI is a second source for
629 some of them. Compatible models include:
631 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
632 pca9670, pca9672, pca9674, pca9674a,
635 16 bits: pcf8575, pcf8575c, pca8575,
636 pca9671, pca9673, pca9675
638 Your board setup code will need to declare the expanders in
639 use, and assign numbers to the GPIOs they expose. Those GPIOs
640 can then be used from drivers and other kernel code, just like
641 other GPIOs, but only accessible from task contexts.
643 This driver provides an in-kernel interface to those GPIOs using
644 platform-neutral GPIO calls.
647 bool "Semtech SX150x I2C GPIO expander"
649 select GPIOLIB_IRQCHIP
652 Say yes here to provide support for Semtech SX150-series I2C
653 GPIO expanders. Compatible models include:
660 menu "MFD GPIO expanders"
663 tristate "GPIO Support for ADP5520 PMIC"
664 depends on PMIC_ADP5520
666 This option enables support for on-chip GPIO found
667 on Analog Devices ADP5520 PMICs.
670 tristate "Wolfson Microelectronics Arizona class devices"
671 depends on MFD_ARIZONA
673 Support for GPIOs on Wolfson Arizona class devices.
675 config GPIO_CRYSTAL_COVE
676 tristate "GPIO support for Crystal Cove PMIC"
677 depends on INTEL_SOC_PMIC
678 select GPIOLIB_IRQCHIP
680 Support for GPIO pins on Crystal Cove PMIC.
682 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
685 This driver can also be built as a module. If so, the module will be
686 called gpio-crystalcove.
689 tristate "AMD CS5535/CS5536 GPIO support"
690 depends on MFD_CS5535
692 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
693 can be used for quite a number of things. The CS5535/6 is found on
694 AMD Geode and Lemote Yeeloong devices.
699 tristate "Dialog DA9052 GPIO"
700 depends on PMIC_DA9052
702 Say yes here to enable the GPIO driver for the DA9052 chip.
705 tristate "Dialog Semiconductor DA9055 GPIO"
706 depends on MFD_DA9055
708 Say yes here to enable the GPIO driver for the DA9055 chip.
710 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
711 be controller by this driver.
713 If driver is built as a module it will be called gpio-da9055.
716 tristate "Diolan DLN2 GPIO support"
718 select GPIOLIB_IRQCHIP
721 Select this option to enable GPIO driver for the Diolan DLN2
724 This driver can also be built as a module. If so, the module
725 will be called gpio-dln2.
728 tristate "Janz VMOD-TTL Digital IO Module"
729 depends on MFD_JANZ_CMODIO
731 This enables support for the Janz VMOD-TTL Digital IO module.
732 This driver provides support for driving the pins in output
733 mode only. Input mode is not supported.
736 tristate "Kontron ETX / COMexpress GPIO"
737 depends on MFD_KEMPLD
739 This enables support for the PLD GPIO interface on some Kontron ETX
740 and COMexpress (ETXexpress) modules.
742 This driver can also be built as a module. If so, the module will be
746 tristate "TI/National Semiconductor LP3943 GPIO expander"
747 depends on MFD_LP3943
749 GPIO driver for LP3943 MFD.
750 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
751 Open drain outputs are required for this usage.
754 bool "Intel MSIC mixed signal gpio support"
755 depends on MFD_INTEL_MSIC
757 Enable support for GPIO on intel MSIC controllers found in
761 bool "TI PALMAS series PMICs GPIO"
762 depends on MFD_PALMAS
764 Select this option to enable GPIO driver for the TI PALMAS
768 bool "RICOH RC5T583 GPIO"
769 depends on MFD_RC5T583
771 Select this option to enable GPIO driver for the Ricoh RC5T583
773 This driver provides the support for driving/reading the gpio pins
774 of RC5T583 device through standard gpio library.
780 select GPIOLIB_IRQCHIP
782 This enables support for the GPIOs found on the STMPE I/O
787 depends on MFD_TC3589X
789 select GPIOLIB_IRQCHIP
791 This enables support for the GPIOs found on the TC3589X
794 config GPIO_TIMBERDALE
795 bool "Support for timberdale GPIO IP"
796 depends on MFD_TIMBERDALE
798 Add support for the GPIO IP in the timberdale FPGA.
802 depends on MFD_TPS6586X
804 Select this option to enable GPIO driver for the TPS6586X
809 depends on MFD_TPS65910
811 Select this option to enable GPIO driver for the TPS65910
815 tristate "TI TPS65912 GPIO"
816 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
818 This driver supports TPS65912 gpio chip
821 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
822 depends on TWL4030_CORE
824 Say yes here to access the GPIO signals of various multi-function
825 power management chips from Texas Instruments.
828 tristate "TWL6040 GPO"
829 depends on TWL6040_CORE
831 Say yes here to access the GPO signals of twl6040
832 audio chip from Texas Instruments.
835 tristate "Philips UCB1400 GPIO"
836 depends on UCB1400_CORE
838 This enables support for the Philips UCB1400 GPIO pins.
839 The UCB1400 is an AC97 audio codec.
842 tristate "WM831x GPIOs"
843 depends on MFD_WM831X
845 Say yes here to access the GPIO signals of WM831x power management
846 chips from Wolfson Microelectronics.
849 tristate "WM8350 GPIOs"
850 depends on MFD_WM8350
852 Say yes here to access the GPIO signals of WM8350 power management
853 chips from Wolfson Microelectronics.
856 tristate "WM8994 GPIOs"
857 depends on MFD_WM8994
859 Say yes here to access the GPIO signals of WM8994 audio hub
860 CODECs from Wolfson Microelectronics.
864 menu "PCI GPIO expanders"
868 tristate "AMD 8111 GPIO driver"
871 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
873 Note, that usually system firmware/ACPI handles GPIO pins on their
874 own and users might easily break their systems with uncarefull usage
880 tristate "BT8XX GPIO abuser"
881 depends on PCI && VIDEO_BT848=n
883 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
884 as a cheap PCI GPIO card.
886 This chip can be found on Miro, Hauppauge and STB TV-cards.
888 The card needs to be physically altered for using it as a
889 GPIO card. For more information on how to build a GPIO card
890 from a BT8xx TV card, see the documentation file at
891 Documentation/bt8xxgpio.txt
895 config GPIO_INTEL_MID
896 bool "Intel Mid GPIO support"
897 depends on PCI && X86
898 select GPIOLIB_IRQCHIP
900 Say Y here to support Intel Mid GPIO.
903 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
905 select GENERIC_IRQ_CHIP
907 ML7213 is companion chip for Intel Atom E6xx series.
908 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
909 Hub) which is for IVI(In-Vehicle Infotainment) use.
910 This driver can access the IOH's GPIO device.
913 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
914 depends on PCI && (X86_32 || COMPILE_TEST)
915 select GENERIC_IRQ_CHIP
917 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
918 which is an IOH(Input/Output Hub) for x86 embedded processor.
919 This driver can access PCH GPIO device.
921 This driver also can be used for LAPIS Semiconductor IOH(Input/
922 Output Hub), ML7223 and ML7831.
923 ML7223 IOH is for MP(Media Phone) use.
924 ML7831 IOH is for general purpose use.
925 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
926 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
929 tristate "RDC R-321x GPIO support"
934 Support for the RDC R321x SoC GPIOs over southbridge
935 PCI configuration space.
937 config GPIO_SODAVILLE
938 bool "Intel Sodaville GPIO support"
939 depends on X86 && PCI && OF
941 select GENERIC_IRQ_CHIP
943 Say Y here to support Intel Sodaville GPIO.
947 menu "SPI GPIO expanders"
948 depends on SPI_MASTER
951 tristate "74x164 serial-in/parallel-out 8-bits shift register"
952 depends on SPI_MASTER && OF
954 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
955 shift registers. This driver can be used to provide access
956 to more gpio outputs.
959 tristate "Maxim MAX7301 GPIO expander"
960 depends on SPI_MASTER
963 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
966 tristate "Microchip MCP23xxx I/O expander"
967 depends on (SPI_MASTER && !I2C) || I2C
969 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
971 This provides a GPIO interface supporting inputs and outputs.
972 The I2C versions of the chips can be used as interrupt-controller.
975 tristate "Freescale MC33880 high-side/low-side switch"
976 depends on SPI_MASTER
978 SPI driver for Freescale MC33880 high-side/low-side switch.
979 This provides GPIO interface supporting inputs and outputs.
983 menu "USB GPIO expanders"
986 config GPIO_VIPERBOARD
987 tristate "Viperboard GPIO a & b support"
988 depends on MFD_VIPERBOARD && USB
990 Say yes here to access the GPIO signals of Nano River
991 Technologies Viperboard. There are two GPIO chips on the
992 board: gpioa and gpiob.
993 See viperboard API specification and Nano
994 River Tech's viperboard.h for detailed meaning
995 of the module parameters.