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 v2"
277 depends on GPIOLIB && OF && ARCH_QCOM
279 Say yes here to support the GPIO interface on ARM v7 based
280 Qualcomm MSM chips. Most of the pins on the MSM can be
281 selected for GPIO, and are controlled by this driver.
285 depends on PLAT_ORION
288 select GENERIC_IRQ_CHIP
294 select GENERIC_IRQ_CHIP
300 select GENERIC_IRQ_CHIP
303 tristate "Cavium OCTEON GPIO"
304 depends on GPIOLIB && CAVIUM_OCTEON_SOC
307 Say yes here to support the on-chip GPIO lines on the OCTEON
311 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
312 default y if ARCH_OMAP
314 select GENERIC_IRQ_CHIP
315 select GPIOLIB_IRQCHIP
317 Say yes here to enable GPIO support for TI OMAP SoCs.
320 bool "PrimeCell PL061 GPIO support"
323 select GPIOLIB_IRQCHIP
325 Say yes here to support the PrimeCell PL061 GPIO device
328 bool "PXA GPIO support"
329 depends on ARCH_PXA || ARCH_MMP
331 Say yes here to support the PXA GPIO device
334 tristate "Renesas R-Car GPIO"
335 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
336 select GPIOLIB_IRQCHIP
338 Say yes here to support GPIO on Renesas R-Car SoCs.
342 depends on PLAT_SAMSUNG
344 Legacy GPIO support. Use only for platforms without support for
348 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
349 depends on PCI && X86
353 Say yes here to support GPIO interface on Intel Poulsbo SCH,
354 Intel Tunnel Creek processor, Intel Centerton processor or
355 Intel Quark X1000 SoC.
357 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
358 powered by the core power rail and are turned off during sleep
359 modes (S3 and higher). The remaining four GPIOs are powered by
360 the Intel SCH suspend power supply. These GPIOs remain
361 active during S3. The suspend powered GPIOs can be used to wake the
362 system from the Suspend-to-RAM state.
364 The Intel Tunnel Creek processor has 5 GPIOs powered by the
365 core power rail and 9 from suspend power supply.
367 The Intel Centerton processor has a total of 30 GPIO pins.
368 Twenty-one are powered by the core power rail and 9 from the
369 suspend power supply.
371 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
372 power well and 6 from the suspend power well.
375 tristate "SMSC SCH311x SuperI/O GPIO"
377 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
378 SCH3116 "Super I/O" chipsets.
380 To compile this driver as a module, choose M here: the module will
381 be called gpio-sch311x.
383 config GPIO_SPEAR_SPICS
384 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
385 depends on PLAT_SPEAR
386 select GENERIC_IRQ_CHIP
388 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
391 bool "STA2x11/ConneXt GPIO support"
392 depends on MFD_STA2X11
393 select GENERIC_IRQ_CHIP
395 Say yes here to support the STA2x11/ConneXt GPIO device.
396 The GPIO module has 128 GPIO pins with alternate functions.
399 bool "XWAY STP GPIOs"
402 This enables support for the Serial To Parallel (STP) unit found on
403 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
404 that can be up to 24 bit. This peripheral is aimed at driving leds.
405 Some of the gpios/leds can be auto updated by the soc with dsl and
409 tristate "GPIO based on SYSCON"
410 depends on MFD_SYSCON && OF
412 Say yes here to support GPIO functionality though SYSCON driver.
416 select GENERIC_IRQ_CHIP
420 tristate "TS-5500 DIO blocks and compatibles"
421 depends on TS5500 || COMPILE_TEST
423 This driver supports Digital I/O exposed by pin blocks found on some
424 Technologic Systems platforms. It includes, but is not limited to, 3
425 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
429 bool "Toumaz Xenif TZ1090 GPIO support"
430 depends on SOC_TZ1090
431 select GENERIC_IRQ_CHIP
434 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
436 config GPIO_TZ1090_PDC
437 bool "Toumaz Xenif TZ1090 PDC GPIO support"
438 depends on SOC_TZ1090
441 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
445 depends on ARCH_MXC && SOC_VF610
446 select GPIOLIB_IRQCHIP
448 Say yes here to support Vybrid vf610 GPIOs.
451 tristate "NEC VR4100 series General-purpose I/O Uint support"
452 depends on CPU_VR41XX
454 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
457 tristate "VIA VX855/VX875 GPIO"
462 Support access to the VX855/VX875 GPIO lines through the gpio library.
464 This driver provides common support for accessing the device,
465 additional drivers must be enabled in order to use the
466 functionality of the device.
469 bool "APM X-Gene GPIO controller support"
470 depends on ARM64 && OF_GPIO
472 This driver is to support the GPIO block within the APM X-Gene SoC
473 platform's generic flash controller. The GPIO pins are muxed with
474 the generic flash controller's address and data pins. Say yes
475 here to enable the GFC GPIO functionality.
478 tristate "APM X-Gene GPIO standby controller support"
479 depends on ARCH_XGENE && OF_GPIO
482 This driver supports the GPIO block within the APM X-Gene
483 Standby Domain. Say yes here to enable the GPIO functionality.
486 tristate "Xilinx GPIO support"
487 depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
489 Say yes here to support the Xilinx FPGA GPIO device
492 bool "Xtensa GPIO32 support"
494 depends on HAVE_XTENSA_GPIO32
497 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
498 and EXPSTATE (output) ports
501 bool "LSI ZEVIO SoC memory mapped GPIOs"
502 depends on ARM && OF_GPIO
504 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
507 tristate "Xilinx Zynq GPIO support"
509 select GPIOLIB_IRQCHIP
511 Say yes here to support Xilinx Zynq GPIO controller.
515 menu "I2C GPIO expanders"
519 tristate "ADP5588 I2C GPIO expander"
522 This option enables support for 18 GPIOs found
523 on Analog Devices ADP5588 GPIO Expanders.
525 config GPIO_ADP5588_IRQ
526 bool "Interrupt controller support for ADP5588"
527 depends on GPIO_ADP5588=y
529 Say yes here to enable the adp5588 to be used as an interrupt
530 controller. It requires the driver to be built in the kernel.
533 tristate "Avionic Design N-bit GPIO expander"
534 depends on I2C && OF_GPIO
535 select GPIOLIB_IRQCHIP
537 This option enables support for N GPIOs found on Avionic Design
538 I2C GPIO expanders. The register space will be extended by powers
539 of two, so the controller will need to accommodate for that. For
540 example: if a controller provides 48 pins, 6 registers will be
541 enough to represent all pins, but the driver will assume a
542 register layout for 64 pins (8 registers).
545 tristate "Maxim MAX7300 GPIO expander"
549 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
552 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
555 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
556 Port Expanders. Each IO port on these chips has a fixed role of
557 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
558 Input and Output (designed by 'P'). The combinations are listed
561 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
562 max7322 (4I4O), max7323 (4P4O)
564 16 bits: max7324 (8I8O), max7325 (8P8O),
565 max7326 (4I12O), max7327 (4P12O)
567 Board setup code must specify the model to use, and the start
568 number for these GPIOs.
570 config GPIO_MAX732X_IRQ
571 bool "Interrupt controller support for MAX732x"
572 depends on GPIO_MAX732X=y
573 select GPIOLIB_IRQCHIP
575 Say yes here to enable the max732x to be used as an interrupt
576 controller. It requires the driver to be built in the kernel.
578 config GPIO_MC9S08DZ60
579 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
580 depends on I2C=y && MACH_MX35_3DS
582 Select this to enable the MC9S08DZ60 GPIO driver
585 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
588 Say yes here to provide access to several register-oriented
589 SMBus I/O expanders, made mostly by NXP or TI. Compatible
592 4 bits: pca9536, pca9537
594 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
595 pca9556, pca9557, pca9574, tca6408, xra1202
597 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
602 40 bits: pca9505, pca9698
604 config GPIO_PCA953X_IRQ
605 bool "Interrupt controller support for PCA953x"
606 depends on GPIO_PCA953X=y
607 select GPIOLIB_IRQCHIP
609 Say yes here to enable the pca953x to be used as an interrupt
610 controller. It requires the driver to be built in the kernel.
613 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
615 select GPIOLIB_IRQCHIP
618 Say yes here to provide access to most "quasi-bidirectional" I2C
619 GPIO expanders used for additional digital outputs or inputs.
620 Most of these parts are from NXP, though TI is a second source for
621 some of them. Compatible models include:
623 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
624 pca9670, pca9672, pca9674, pca9674a,
627 16 bits: pcf8575, pcf8575c, pca8575,
628 pca9671, pca9673, pca9675
630 Your board setup code will need to declare the expanders in
631 use, and assign numbers to the GPIOs they expose. Those GPIOs
632 can then be used from drivers and other kernel code, just like
633 other GPIOs, but only accessible from task contexts.
635 This driver provides an in-kernel interface to those GPIOs using
636 platform-neutral GPIO calls.
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:
652 menu "MFD GPIO expanders"
655 tristate "GPIO Support for ADP5520 PMIC"
656 depends on PMIC_ADP5520
658 This option enables support for on-chip GPIO found
659 on Analog Devices ADP5520 PMICs.
662 tristate "Wolfson Microelectronics Arizona class devices"
663 depends on MFD_ARIZONA
665 Support for GPIOs on Wolfson Arizona class devices.
667 config GPIO_CRYSTAL_COVE
668 tristate "GPIO support for Crystal Cove PMIC"
669 depends on INTEL_SOC_PMIC
670 select GPIOLIB_IRQCHIP
672 Support for GPIO pins on Crystal Cove PMIC.
674 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
677 This driver can also be built as a module. If so, the module will be
678 called gpio-crystalcove.
681 tristate "AMD CS5535/CS5536 GPIO support"
682 depends on MFD_CS5535
684 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
685 can be used for quite a number of things. The CS5535/6 is found on
686 AMD Geode and Lemote Yeeloong devices.
691 tristate "Dialog DA9052 GPIO"
692 depends on PMIC_DA9052
694 Say yes here to enable the GPIO driver for the DA9052 chip.
697 tristate "Dialog Semiconductor DA9055 GPIO"
698 depends on MFD_DA9055
700 Say yes here to enable the GPIO driver for the DA9055 chip.
702 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
703 be controller by this driver.
705 If driver is built as a module it will be called gpio-da9055.
708 tristate "Diolan DLN2 GPIO support"
710 select GPIOLIB_IRQCHIP
713 Select this option to enable GPIO driver for the Diolan DLN2
716 This driver can also be built as a module. If so, the module
717 will be called gpio-dln2.
720 tristate "Janz VMOD-TTL Digital IO Module"
721 depends on MFD_JANZ_CMODIO
723 This enables support for the Janz VMOD-TTL Digital IO module.
724 This driver provides support for driving the pins in output
725 mode only. Input mode is not supported.
728 tristate "Kontron ETX / COMexpress GPIO"
729 depends on MFD_KEMPLD
731 This enables support for the PLD GPIO interface on some Kontron ETX
732 and COMexpress (ETXexpress) modules.
734 This driver can also be built as a module. If so, the module will be
738 tristate "TI/National Semiconductor LP3943 GPIO expander"
739 depends on MFD_LP3943
741 GPIO driver for LP3943 MFD.
742 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
743 Open drain outputs are required for this usage.
746 bool "Intel MSIC mixed signal gpio support"
747 depends on MFD_INTEL_MSIC
749 Enable support for GPIO on intel MSIC controllers found in
753 bool "TI PALMAS series PMICs GPIO"
754 depends on MFD_PALMAS
756 Select this option to enable GPIO driver for the TI PALMAS
760 bool "RICOH RC5T583 GPIO"
761 depends on MFD_RC5T583
763 Select this option to enable GPIO driver for the Ricoh RC5T583
765 This driver provides the support for driving/reading the gpio pins
766 of RC5T583 device through standard gpio library.
772 select GPIOLIB_IRQCHIP
774 This enables support for the GPIOs found on the STMPE I/O
779 depends on MFD_TC3589X
781 select GPIOLIB_IRQCHIP
783 This enables support for the GPIOs found on the TC3589X
786 config GPIO_TIMBERDALE
787 bool "Support for timberdale GPIO IP"
788 depends on MFD_TIMBERDALE
790 Add support for the GPIO IP in the timberdale FPGA.
794 depends on MFD_TPS6586X
796 Select this option to enable GPIO driver for the TPS6586X
801 depends on MFD_TPS65910
803 Select this option to enable GPIO driver for the TPS65910
807 tristate "TI TPS65912 GPIO"
808 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
810 This driver supports TPS65912 gpio chip
813 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
814 depends on TWL4030_CORE
816 Say yes here to access the GPIO signals of various multi-function
817 power management chips from Texas Instruments.
820 tristate "TWL6040 GPO"
821 depends on TWL6040_CORE
823 Say yes here to access the GPO signals of twl6040
824 audio chip from Texas Instruments.
827 tristate "Philips UCB1400 GPIO"
828 depends on UCB1400_CORE
830 This enables support for the Philips UCB1400 GPIO pins.
831 The UCB1400 is an AC97 audio codec.
834 tristate "WM831x GPIOs"
835 depends on MFD_WM831X
837 Say yes here to access the GPIO signals of WM831x power management
838 chips from Wolfson Microelectronics.
841 tristate "WM8350 GPIOs"
842 depends on MFD_WM8350
844 Say yes here to access the GPIO signals of WM8350 power management
845 chips from Wolfson Microelectronics.
848 tristate "WM8994 GPIOs"
849 depends on MFD_WM8994
851 Say yes here to access the GPIO signals of WM8994 audio hub
852 CODECs from Wolfson Microelectronics.
856 menu "PCI GPIO expanders"
860 tristate "AMD 8111 GPIO driver"
863 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
865 Note, that usually system firmware/ACPI handles GPIO pins on their
866 own and users might easily break their systems with uncarefull usage
872 tristate "BT8XX GPIO abuser"
873 depends on PCI && VIDEO_BT848=n
875 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
876 as a cheap PCI GPIO card.
878 This chip can be found on Miro, Hauppauge and STB TV-cards.
880 The card needs to be physically altered for using it as a
881 GPIO card. For more information on how to build a GPIO card
882 from a BT8xx TV card, see the documentation file at
883 Documentation/bt8xxgpio.txt
887 config GPIO_INTEL_MID
888 bool "Intel Mid GPIO support"
889 depends on PCI && X86
890 select GPIOLIB_IRQCHIP
892 Say Y here to support Intel Mid GPIO.
895 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
897 select GENERIC_IRQ_CHIP
899 ML7213 is companion chip for Intel Atom E6xx series.
900 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
901 Hub) which is for IVI(In-Vehicle Infotainment) use.
902 This driver can access the IOH's GPIO device.
905 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
906 depends on PCI && (X86_32 || COMPILE_TEST)
907 select GENERIC_IRQ_CHIP
909 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
910 which is an IOH(Input/Output Hub) for x86 embedded processor.
911 This driver can access PCH GPIO device.
913 This driver also can be used for LAPIS Semiconductor IOH(Input/
914 Output Hub), ML7223 and ML7831.
915 ML7223 IOH is for MP(Media Phone) use.
916 ML7831 IOH is for general purpose use.
917 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
918 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
921 tristate "RDC R-321x GPIO support"
926 Support for the RDC R321x SoC GPIOs over southbridge
927 PCI configuration space.
929 config GPIO_SODAVILLE
930 bool "Intel Sodaville GPIO support"
931 depends on X86 && PCI && OF
933 select GENERIC_IRQ_CHIP
935 Say Y here to support Intel Sodaville GPIO.
939 menu "SPI GPIO expanders"
940 depends on SPI_MASTER
943 tristate "74x164 serial-in/parallel-out 8-bits shift register"
944 depends on SPI_MASTER && OF
946 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
947 shift registers. This driver can be used to provide access
948 to more gpio outputs.
951 tristate "Maxim MAX7301 GPIO expander"
952 depends on SPI_MASTER
955 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
958 tristate "Microchip MCP23xxx I/O expander"
959 depends on (SPI_MASTER && !I2C) || I2C
961 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
963 This provides a GPIO interface supporting inputs and outputs.
964 The I2C versions of the chips can be used as interrupt-controller.
967 tristate "Freescale MC33880 high-side/low-side switch"
968 depends on SPI_MASTER
970 SPI driver for Freescale MC33880 high-side/low-side switch.
971 This provides GPIO interface supporting inputs and outputs.
975 menu "USB GPIO expanders"
978 config GPIO_VIPERBOARD
979 tristate "Viperboard GPIO a & b support"
980 depends on MFD_VIPERBOARD && USB
982 Say yes here to access the GPIO signals of Nano River
983 Technologies Viperboard. There are two GPIO chips on the
984 board: gpioa and gpiob.
985 See viperboard API specification and Nano
986 River Tech's viperboard.h for detailed meaning
987 of the module parameters.