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"
116 select GPIOLIB_IRQCHIP
118 Say Y or M here to build support for the Altera PIO device.
120 If driver is built as a module it will be called gpio-altera.
123 tristate "AMD Promontory GPIO support"
126 driver for GPIO functionality on Promontory IOHub
127 Require ACPI ASL code to enumerate as a platform device.
130 bool "Broadcom Kona GPIO"
131 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
133 Turn on GPIO support for Broadcom "Kona" chips.
136 tristate "BRCMSTB GPIO support"
137 default y if ARCH_BRCMSTB
138 depends on OF_GPIO && (ARCH_BRCMSTB || COMPILE_TEST)
140 select GPIOLIB_IRQCHIP
142 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
145 tristate "CLPS711X GPIO support"
146 depends on ARCH_CLPS711X || COMPILE_TEST
149 Say yes here to support GPIO on CLPS711X SoCs.
152 bool "TI Davinci/Keystone GPIO support"
153 default y if ARCH_DAVINCI
154 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
156 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
159 tristate "Synopsys DesignWare APB GPIO driver"
161 select GENERIC_IRQ_CHIP
163 Say Y or M here to build support for the Synopsys DesignWare APB
167 tristate "Emma Mobile GPIO"
168 depends on ARM && OF_GPIO
170 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
174 depends on ARCH_EP93XX
178 bool "Axis ETRAX FS General I/O"
179 depends on CRIS || COMPILE_TEST
182 select GPIOLIB_IRQCHIP
184 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
187 bool "GE FPGA based GPIO"
191 Support for common GPIO functionality provided on some GE Single Board
194 This driver provides basic support (configure as input or output, read
195 and write pin state) for GPIO implemented in a number of GE single
198 config GPIO_GENERIC_PLATFORM
199 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
202 Say yes here to support basic platform_device memory-mapped GPIO controllers.
205 tristate "Aeroflex Gaisler GRGPIO support"
210 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
211 VHDL IP core library.
214 tristate "Intel ICH GPIO"
215 depends on PCI && X86
219 Say yes here to support the GPIO functionality of a number of Intel
220 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
221 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
222 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
227 tristate "Intel IOP GPIO"
228 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
230 Say yes here to support the GPIO functionality of a number of Intel
236 bool "Loongson-2/3 GPIO support"
237 depends on CPU_LOONGSON2 || CPU_LOONGSON3
239 driver for GPIO functionality on Loongson-2F/3A/3B processors.
242 bool "NXP LPC18XX/43XX GPIO support"
243 default y if ARCH_LPC18XX
244 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
246 Select this option to enable GPIO driver for
247 NXP LPC18XX/43XX devices.
249 config GPIO_LYNXPOINT
250 tristate "Intel Lynxpoint GPIO support"
251 depends on ACPI && X86
252 select GPIOLIB_IRQCHIP
254 driver for GPIO functionality on Intel Lynxpoint PCH chipset
255 Requires ACPI device enumeration code to set up a platform device.
258 bool "GPIO support for Fujitsu MB86S7x Platforms"
259 depends on ARCH_MB86S7X
261 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
263 config GPIO_MM_LANTIQ
264 bool "Lantiq Memory mapped GPIOs"
265 depends on LANTIQ && SOC_XWAY
267 This enables support for memory mapped GPIOs on the External Bus Unit
268 (EBU) found on Lantiq SoCs. The gpios are output only as they are
269 created by attaching a 16bit latch to the bus.
272 bool "MOXART GPIO support"
273 depends on ARCH_MOXART
276 Select this option to enable GPIO driver for
277 MOXA ART SoC devices.
281 depends on PPC_MPC52xx
284 bool "MPC512x/MPC8xxx GPIO support"
285 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
286 FSL_SOC_BOOKE || PPC_86xx
288 Say Y here if you're going to use hardware that connects to the
289 MPC512x/831x/834x/837x/8572/8610 GPIOs.
293 depends on PLAT_ORION
295 select GENERIC_IRQ_CHIP
301 select GENERIC_IRQ_CHIP
307 select GENERIC_IRQ_CHIP
310 tristate "Cavium OCTEON GPIO"
311 depends on GPIOLIB && CAVIUM_OCTEON_SOC
314 Say yes here to support the on-chip GPIO lines on the OCTEON
318 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
319 default y if ARCH_OMAP
321 select GENERIC_IRQ_CHIP
322 select GPIOLIB_IRQCHIP
324 Say yes here to enable GPIO support for TI OMAP SoCs.
327 bool "PrimeCell PL061 GPIO support"
330 select GPIOLIB_IRQCHIP
332 Say yes here to support the PrimeCell PL061 GPIO device
335 bool "PXA GPIO support"
336 depends on ARCH_PXA || ARCH_MMP
338 Say yes here to support the PXA GPIO device
340 config GPIO_QCOM_SMSM
341 bool "Qualcomm Shared Memory State Machine"
344 Say yes here to support the Qualcomm Shared Memory State Machine.
345 The state machine is represented by bits in shared memory and is
346 exposed to the system as GPIOs.
349 tristate "Renesas R-Car GPIO"
350 depends on ARCH_SHMOBILE || COMPILE_TEST
351 select GPIOLIB_IRQCHIP
353 Say yes here to support GPIO on Renesas R-Car SoCs.
357 depends on PLAT_SAMSUNG
359 Legacy GPIO support. Use only for platforms without support for
362 config GPIO_SPEAR_SPICS
363 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
364 depends on PLAT_SPEAR
365 select GENERIC_IRQ_CHIP
367 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
370 bool "STA2x11/ConneXt GPIO support"
371 depends on MFD_STA2X11
372 select GENERIC_IRQ_CHIP
374 Say yes here to support the STA2x11/ConneXt GPIO device.
375 The GPIO module has 128 GPIO pins with alternate functions.
378 bool "XWAY STP GPIOs"
381 This enables support for the Serial To Parallel (STP) unit found on
382 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
383 that can be up to 24 bit. This peripheral is aimed at driving leds.
384 Some of the gpios/leds can be auto updated by the soc with dsl and
388 tristate "GPIO based on SYSCON"
389 depends on MFD_SYSCON && OF
391 Say yes here to support GPIO functionality though SYSCON driver.
395 select GENERIC_IRQ_CHIP
399 bool "Toumaz Xenif TZ1090 GPIO support"
400 depends on SOC_TZ1090
401 select GENERIC_IRQ_CHIP
404 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
406 config GPIO_TZ1090_PDC
407 bool "Toumaz Xenif TZ1090 PDC GPIO support"
408 depends on SOC_TZ1090
411 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
415 depends on ARCH_MXC && SOC_VF610
416 select GPIOLIB_IRQCHIP
418 Say yes here to support Vybrid vf610 GPIOs.
421 tristate "NEC VR4100 series General-purpose I/O Uint support"
422 depends on CPU_VR41XX
424 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
427 tristate "VIA VX855/VX875 GPIO"
432 Support access to the VX855/VX875 GPIO lines through the gpio library.
434 This driver provides common support for accessing the device,
435 additional drivers must be enabled in order to use the
436 functionality of the device.
439 bool "APM X-Gene GPIO controller support"
440 depends on ARM64 && OF_GPIO
442 This driver is to support the GPIO block within the APM X-Gene SoC
443 platform's generic flash controller. The GPIO pins are muxed with
444 the generic flash controller's address and data pins. Say yes
445 here to enable the GFC GPIO functionality.
448 tristate "APM X-Gene GPIO standby controller support"
449 depends on ARCH_XGENE && OF_GPIO
452 This driver supports the GPIO block within the APM X-Gene
453 Standby Domain. Say yes here to enable the GPIO functionality.
456 tristate "Xilinx GPIO support"
459 Say yes here to support the Xilinx FPGA GPIO device
462 tristate "Netlogic XLP GPIO support"
463 depends on CPU_XLP && OF_GPIO
464 select GPIOLIB_IRQCHIP
466 This driver provides support for GPIO interface on Netlogic XLP MIPS64
467 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
473 bool "Xtensa GPIO32 support"
475 depends on HAVE_XTENSA_GPIO32
478 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
479 and EXPSTATE (output) ports
482 bool "LSI ZEVIO SoC memory mapped GPIOs"
483 depends on ARM && OF_GPIO
485 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
488 tristate "Xilinx Zynq GPIO support"
489 depends on ARCH_ZYNQ || ARCH_ZYNQMP
490 select GPIOLIB_IRQCHIP
492 Say yes here to support Xilinx Zynq GPIO controller.
495 bool "ZTE ZX GPIO support"
496 select GPIOLIB_IRQCHIP
498 Say yes here to support the GPIO device on ZTE ZX SoCs.
502 menu "Port-mapped I/O GPIO drivers"
503 depends on X86 # Unconditional I/O space access
505 config GPIO_104_IDIO_16
506 tristate "ACCES 104-IDIO-16 GPIO support"
508 Enables GPIO support for the ACCES 104-IDIO-16 family.
511 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
513 This option enables support for GPIOs found on Fintek Super-I/O
514 chips F71869, F71869A, F71882FG and F71889F.
516 To compile this driver as a module, choose M here: the module will
517 be called f7188x-gpio.
520 tristate "IT87xx GPIO support"
522 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
524 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
525 supports the IT8761E Super I/O chip as well.
527 To compile this driver as a module, choose M here: the module will
531 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
536 Say yes here to support GPIO interface on Intel Poulsbo SCH,
537 Intel Tunnel Creek processor, Intel Centerton processor or
538 Intel Quark X1000 SoC.
540 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
541 powered by the core power rail and are turned off during sleep
542 modes (S3 and higher). The remaining four GPIOs are powered by
543 the Intel SCH suspend power supply. These GPIOs remain
544 active during S3. The suspend powered GPIOs can be used to wake the
545 system from the Suspend-to-RAM state.
547 The Intel Tunnel Creek processor has 5 GPIOs powered by the
548 core power rail and 9 from suspend power supply.
550 The Intel Centerton processor has a total of 30 GPIO pins.
551 Twenty-one are powered by the core power rail and 9 from the
552 suspend power supply.
554 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
555 power well and 6 from the suspend power well.
558 tristate "SMSC SCH311x SuperI/O GPIO"
560 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
561 SCH3116 "Super I/O" chipsets.
563 To compile this driver as a module, choose M here: the module will
564 be called gpio-sch311x.
567 tristate "TS-5500 DIO blocks and compatibles"
568 depends on TS5500 || COMPILE_TEST
570 This driver supports Digital I/O exposed by pin blocks found on some
571 Technologic Systems platforms. It includes, but is not limited to, 3
572 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
577 menu "I2C GPIO expanders"
581 tristate "ADP5588 I2C GPIO expander"
583 This option enables support for 18 GPIOs found
584 on Analog Devices ADP5588 GPIO Expanders.
586 config GPIO_ADP5588_IRQ
587 bool "Interrupt controller support for ADP5588"
588 depends on GPIO_ADP5588=y
590 Say yes here to enable the adp5588 to be used as an interrupt
591 controller. It requires the driver to be built in the kernel.
594 tristate "Avionic Design N-bit GPIO expander"
596 select GPIOLIB_IRQCHIP
598 This option enables support for N GPIOs found on Avionic Design
599 I2C GPIO expanders. The register space will be extended by powers
600 of two, so the controller will need to accommodate for that. For
601 example: if a controller provides 48 pins, 6 registers will be
602 enough to represent all pins, but the driver will assume a
603 register layout for 64 pins (8 registers).
606 tristate "Maxim MAX7300 GPIO expander"
609 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
612 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
614 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
615 Port Expanders. Each IO port on these chips has a fixed role of
616 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
617 Input and Output (designed by 'P'). The combinations are listed
620 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
621 max7322 (4I4O), max7323 (4P4O)
623 16 bits: max7324 (8I8O), max7325 (8P8O),
624 max7326 (4I12O), max7327 (4P12O)
626 Board setup code must specify the model to use, and the start
627 number for these GPIOs.
629 config GPIO_MAX732X_IRQ
630 bool "Interrupt controller support for MAX732x"
631 depends on GPIO_MAX732X=y
632 select GPIOLIB_IRQCHIP
634 Say yes here to enable the max732x to be used as an interrupt
635 controller. It requires the driver to be built in the kernel.
637 config GPIO_MC9S08DZ60
638 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
639 depends on I2C=y && MACH_MX35_3DS
641 Select this to enable the MC9S08DZ60 GPIO driver
644 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
646 Say yes here to provide access to several register-oriented
647 SMBus I/O expanders, made mostly by NXP or TI. Compatible
650 4 bits: pca9536, pca9537
652 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
653 pca9556, pca9557, pca9574, tca6408, xra1202
655 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
660 40 bits: pca9505, pca9698
662 config GPIO_PCA953X_IRQ
663 bool "Interrupt controller support for PCA953x"
664 depends on GPIO_PCA953X=y
665 select GPIOLIB_IRQCHIP
667 Say yes here to enable the pca953x to be used as an interrupt
668 controller. It requires the driver to be built in the kernel.
671 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
672 select GPIOLIB_IRQCHIP
675 Say yes here to provide access to most "quasi-bidirectional" I2C
676 GPIO expanders used for additional digital outputs or inputs.
677 Most of these parts are from NXP, though TI is a second source for
678 some of them. Compatible models include:
680 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
681 pca9670, pca9672, pca9674, pca9674a,
684 16 bits: pcf8575, pcf8575c, pca8575,
685 pca9671, pca9673, pca9675
687 Your board setup code will need to declare the expanders in
688 use, and assign numbers to the GPIOs they expose. Those GPIOs
689 can then be used from drivers and other kernel code, just like
690 other GPIOs, but only accessible from task contexts.
692 This driver provides an in-kernel interface to those GPIOs using
693 platform-neutral GPIO calls.
696 bool "Semtech SX150x I2C GPIO expander"
698 select GPIOLIB_IRQCHIP
701 Say yes here to provide support for Semtech SX150-series I2C
702 GPIO expanders. Compatible models include:
709 menu "MFD GPIO expanders"
712 tristate "GPIO Support for ADP5520 PMIC"
713 depends on PMIC_ADP5520
715 This option enables support for on-chip GPIO found
716 on Analog Devices ADP5520 PMICs.
719 tristate "Wolfson Microelectronics Arizona class devices"
720 depends on MFD_ARIZONA
722 Support for GPIOs on Wolfson Arizona class devices.
724 config GPIO_CRYSTAL_COVE
725 tristate "GPIO support for Crystal Cove PMIC"
726 depends on INTEL_SOC_PMIC
727 select GPIOLIB_IRQCHIP
729 Support for GPIO pins on Crystal Cove PMIC.
731 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
734 This driver can also be built as a module. If so, the module will be
735 called gpio-crystalcove.
738 tristate "AMD CS5535/CS5536 GPIO support"
739 depends on MFD_CS5535
741 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
742 can be used for quite a number of things. The CS5535/6 is found on
743 AMD Geode and Lemote Yeeloong devices.
748 tristate "Dialog DA9052 GPIO"
749 depends on PMIC_DA9052
751 Say yes here to enable the GPIO driver for the DA9052 chip.
754 tristate "Dialog Semiconductor DA9055 GPIO"
755 depends on MFD_DA9055
757 Say yes here to enable the GPIO driver for the DA9055 chip.
759 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
760 be controller by this driver.
762 If driver is built as a module it will be called gpio-da9055.
765 tristate "Diolan DLN2 GPIO support"
767 select GPIOLIB_IRQCHIP
770 Select this option to enable GPIO driver for the Diolan DLN2
773 This driver can also be built as a module. If so, the module
774 will be called gpio-dln2.
777 tristate "Janz VMOD-TTL Digital IO Module"
778 depends on MFD_JANZ_CMODIO
780 This enables support for the Janz VMOD-TTL Digital IO module.
781 This driver provides support for driving the pins in output
782 mode only. Input mode is not supported.
785 tristate "Kontron ETX / COMexpress GPIO"
786 depends on MFD_KEMPLD
788 This enables support for the PLD GPIO interface on some Kontron ETX
789 and COMexpress (ETXexpress) modules.
791 This driver can also be built as a module. If so, the module will be
795 tristate "TI/National Semiconductor LP3943 GPIO expander"
796 depends on MFD_LP3943
798 GPIO driver for LP3943 MFD.
799 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
800 Open drain outputs are required for this usage.
803 bool "Intel MSIC mixed signal gpio support"
804 depends on MFD_INTEL_MSIC
806 Enable support for GPIO on intel MSIC controllers found in
810 bool "TI PALMAS series PMICs GPIO"
811 depends on MFD_PALMAS
813 Select this option to enable GPIO driver for the TI PALMAS
817 bool "RICOH RC5T583 GPIO"
818 depends on MFD_RC5T583
820 Select this option to enable GPIO driver for the Ricoh RC5T583
822 This driver provides the support for driving/reading the gpio pins
823 of RC5T583 device through standard gpio library.
829 select GPIOLIB_IRQCHIP
831 This enables support for the GPIOs found on the STMPE I/O
836 depends on MFD_TC3589X
838 select GPIOLIB_IRQCHIP
840 This enables support for the GPIOs found on the TC3589X
843 config GPIO_TIMBERDALE
844 bool "Support for timberdale GPIO IP"
845 depends on MFD_TIMBERDALE
847 Add support for the GPIO IP in the timberdale FPGA.
851 depends on MFD_TPS6586X
853 Select this option to enable GPIO driver for the TPS6586X
858 depends on MFD_TPS65910
860 Select this option to enable GPIO driver for the TPS65910
864 tristate "TI TPS65912 GPIO"
865 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
867 This driver supports TPS65912 gpio chip
870 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
871 depends on TWL4030_CORE
873 Say yes here to access the GPIO signals of various multi-function
874 power management chips from Texas Instruments.
877 tristate "TWL6040 GPO"
878 depends on TWL6040_CORE
880 Say yes here to access the GPO signals of twl6040
881 audio chip from Texas Instruments.
884 tristate "Philips UCB1400 GPIO"
885 depends on UCB1400_CORE
887 This enables support for the Philips UCB1400 GPIO pins.
888 The UCB1400 is an AC97 audio codec.
891 tristate "WM831x GPIOs"
892 depends on MFD_WM831X
894 Say yes here to access the GPIO signals of WM831x power management
895 chips from Wolfson Microelectronics.
898 tristate "WM8350 GPIOs"
899 depends on MFD_WM8350
901 Say yes here to access the GPIO signals of WM8350 power management
902 chips from Wolfson Microelectronics.
905 tristate "WM8994 GPIOs"
906 depends on MFD_WM8994
908 Say yes here to access the GPIO signals of WM8994 audio hub
909 CODECs from Wolfson Microelectronics.
913 menu "PCI GPIO expanders"
917 tristate "AMD 8111 GPIO driver"
920 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
922 Note, that usually system firmware/ACPI handles GPIO pins on their
923 own and users might easily break their systems with uncarefull usage
929 tristate "BT8XX GPIO abuser"
930 depends on PCI && VIDEO_BT848=n
932 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
933 as a cheap PCI GPIO card.
935 This chip can be found on Miro, Hauppauge and STB TV-cards.
937 The card needs to be physically altered for using it as a
938 GPIO card. For more information on how to build a GPIO card
939 from a BT8xx TV card, see the documentation file at
940 Documentation/bt8xxgpio.txt
944 config GPIO_INTEL_MID
945 bool "Intel Mid GPIO support"
946 depends on PCI && X86
947 select GPIOLIB_IRQCHIP
949 Say Y here to support Intel Mid GPIO.
952 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
954 select GENERIC_IRQ_CHIP
956 ML7213 is companion chip for Intel Atom E6xx series.
957 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
958 Hub) which is for IVI(In-Vehicle Infotainment) use.
959 This driver can access the IOH's GPIO device.
962 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
963 depends on PCI && (X86_32 || COMPILE_TEST)
964 select GENERIC_IRQ_CHIP
966 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
967 which is an IOH(Input/Output Hub) for x86 embedded processor.
968 This driver can access PCH GPIO device.
970 This driver also can be used for LAPIS Semiconductor IOH(Input/
971 Output Hub), ML7223 and ML7831.
972 ML7223 IOH is for MP(Media Phone) use.
973 ML7831 IOH is for general purpose use.
974 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
975 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
978 tristate "RDC R-321x GPIO support"
983 Support for the RDC R321x SoC GPIOs over southbridge
984 PCI configuration space.
986 config GPIO_SODAVILLE
987 bool "Intel Sodaville GPIO support"
988 depends on X86 && PCI && OF
990 select GENERIC_IRQ_CHIP
992 Say Y here to support Intel Sodaville GPIO.
996 menu "SPI GPIO expanders"
997 depends on SPI_MASTER
1000 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1003 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1004 shift registers. This driver can be used to provide access
1005 to more gpio outputs.
1008 tristate "Maxim MAX7301 GPIO expander"
1011 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1014 tristate "Freescale MC33880 high-side/low-side switch"
1016 SPI driver for Freescale MC33880 high-side/low-side switch.
1017 This provides GPIO interface supporting inputs and outputs.
1021 menu "SPI or I2C GPIO expanders"
1022 depends on (SPI_MASTER && !I2C) || I2C
1024 config GPIO_MCP23S08
1025 tristate "Microchip MCP23xxx I/O expander"
1027 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1029 This provides a GPIO interface supporting inputs and outputs.
1030 The I2C versions of the chips can be used as interrupt-controller.
1034 menu "USB GPIO expanders"
1037 config GPIO_VIPERBOARD
1038 tristate "Viperboard GPIO a & b support"
1039 depends on MFD_VIPERBOARD && USB
1041 Say yes here to access the GPIO signals of Nano River
1042 Technologies Viperboard. There are two GPIO chips on the
1043 board: gpioa and gpiob.
1044 See viperboard API specification and Nano
1045 River Tech's viperboard.h for detailed meaning
1046 of the module parameters.