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 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
190 This option enables support for GPIOs found on Fintek Super-I/O
191 chips F71869, F71869A, F71882FG and F71889F.
193 To compile this driver as a module, choose M here: the module will
194 be called f7188x-gpio.
197 bool "GE FPGA based GPIO"
201 Support for common GPIO functionality provided on some GE Single Board
204 This driver provides basic support (configure as input or output, read
205 and write pin state) for GPIO implemented in a number of GE single
208 config GPIO_GENERIC_PLATFORM
209 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
212 Say yes here to support basic platform_device memory-mapped GPIO controllers.
215 tristate "Aeroflex Gaisler GRGPIO support"
220 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
221 VHDL IP core library.
224 tristate "Intel ICH GPIO"
225 depends on PCI && X86
229 Say yes here to support the GPIO functionality of a number of Intel
230 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
231 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
232 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
237 tristate "Intel IOP GPIO"
238 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
240 Say yes here to support the GPIO functionality of a number of Intel
246 tristate "IT87xx GPIO support"
247 depends on X86 # unconditional access to IO space.
249 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
251 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
252 supports the IT8761E Super I/O chip as well.
254 To compile this driver as a module, choose M here: the module will
258 bool "Loongson-2/3 GPIO support"
259 depends on CPU_LOONGSON2 || CPU_LOONGSON3
261 driver for GPIO functionality on Loongson-2F/3A/3B processors.
264 bool "NXP LPC18XX/43XX GPIO support"
265 default y if ARCH_LPC18XX
266 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
268 Select this option to enable GPIO driver for
269 NXP LPC18XX/43XX devices.
271 config GPIO_LYNXPOINT
272 tristate "Intel Lynxpoint GPIO support"
273 depends on ACPI && X86
274 select GPIOLIB_IRQCHIP
276 driver for GPIO functionality on Intel Lynxpoint PCH chipset
277 Requires ACPI device enumeration code to set up a platform device.
280 bool "GPIO support for Fujitsu MB86S7x Platforms"
281 depends on ARCH_MB86S7X
283 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
285 config GPIO_MM_LANTIQ
286 bool "Lantiq Memory mapped GPIOs"
287 depends on LANTIQ && SOC_XWAY
289 This enables support for memory mapped GPIOs on the External Bus Unit
290 (EBU) found on Lantiq SoCs. The gpios are output only as they are
291 created by attaching a 16bit latch to the bus.
294 bool "MOXART GPIO support"
295 depends on ARCH_MOXART
298 Select this option to enable GPIO driver for
299 MOXA ART SoC devices.
303 depends on PPC_MPC52xx
306 bool "MPC512x/MPC8xxx GPIO support"
307 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
308 FSL_SOC_BOOKE || PPC_86xx
310 Say Y here if you're going to use hardware that connects to the
311 MPC512x/831x/834x/837x/8572/8610 GPIOs.
315 depends on PLAT_ORION
317 select GENERIC_IRQ_CHIP
323 select GENERIC_IRQ_CHIP
329 select GENERIC_IRQ_CHIP
332 tristate "Cavium OCTEON GPIO"
333 depends on GPIOLIB && CAVIUM_OCTEON_SOC
336 Say yes here to support the on-chip GPIO lines on the OCTEON
340 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
341 default y if ARCH_OMAP
343 select GENERIC_IRQ_CHIP
344 select GPIOLIB_IRQCHIP
346 Say yes here to enable GPIO support for TI OMAP SoCs.
349 bool "PrimeCell PL061 GPIO support"
352 select GPIOLIB_IRQCHIP
354 Say yes here to support the PrimeCell PL061 GPIO device
357 bool "PXA GPIO support"
358 depends on ARCH_PXA || ARCH_MMP
360 Say yes here to support the PXA GPIO device
363 tristate "Renesas R-Car GPIO"
364 depends on ARCH_SHMOBILE || COMPILE_TEST
365 select GPIOLIB_IRQCHIP
367 Say yes here to support GPIO on Renesas R-Car SoCs.
371 depends on PLAT_SAMSUNG
373 Legacy GPIO support. Use only for platforms without support for
377 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
378 depends on PCI && X86
382 Say yes here to support GPIO interface on Intel Poulsbo SCH,
383 Intel Tunnel Creek processor, Intel Centerton processor or
384 Intel Quark X1000 SoC.
386 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
387 powered by the core power rail and are turned off during sleep
388 modes (S3 and higher). The remaining four GPIOs are powered by
389 the Intel SCH suspend power supply. These GPIOs remain
390 active during S3. The suspend powered GPIOs can be used to wake the
391 system from the Suspend-to-RAM state.
393 The Intel Tunnel Creek processor has 5 GPIOs powered by the
394 core power rail and 9 from suspend power supply.
396 The Intel Centerton processor has a total of 30 GPIO pins.
397 Twenty-one are powered by the core power rail and 9 from the
398 suspend power supply.
400 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
401 power well and 6 from the suspend power well.
404 tristate "SMSC SCH311x SuperI/O GPIO"
406 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
407 SCH3116 "Super I/O" chipsets.
409 To compile this driver as a module, choose M here: the module will
410 be called gpio-sch311x.
412 config GPIO_SPEAR_SPICS
413 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
414 depends on PLAT_SPEAR
415 select GENERIC_IRQ_CHIP
417 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
420 bool "STA2x11/ConneXt GPIO support"
421 depends on MFD_STA2X11
422 select GENERIC_IRQ_CHIP
424 Say yes here to support the STA2x11/ConneXt GPIO device.
425 The GPIO module has 128 GPIO pins with alternate functions.
428 bool "XWAY STP GPIOs"
431 This enables support for the Serial To Parallel (STP) unit found on
432 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
433 that can be up to 24 bit. This peripheral is aimed at driving leds.
434 Some of the gpios/leds can be auto updated by the soc with dsl and
438 tristate "GPIO based on SYSCON"
439 depends on MFD_SYSCON && OF
441 Say yes here to support GPIO functionality though SYSCON driver.
445 select GENERIC_IRQ_CHIP
449 tristate "TS-5500 DIO blocks and compatibles"
450 depends on TS5500 || COMPILE_TEST
452 This driver supports Digital I/O exposed by pin blocks found on some
453 Technologic Systems platforms. It includes, but is not limited to, 3
454 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
458 bool "Toumaz Xenif TZ1090 GPIO support"
459 depends on SOC_TZ1090
460 select GENERIC_IRQ_CHIP
463 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
465 config GPIO_TZ1090_PDC
466 bool "Toumaz Xenif TZ1090 PDC GPIO support"
467 depends on SOC_TZ1090
470 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
474 depends on ARCH_MXC && SOC_VF610
475 select GPIOLIB_IRQCHIP
477 Say yes here to support Vybrid vf610 GPIOs.
480 tristate "NEC VR4100 series General-purpose I/O Uint support"
481 depends on CPU_VR41XX
483 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
486 tristate "VIA VX855/VX875 GPIO"
491 Support access to the VX855/VX875 GPIO lines through the gpio library.
493 This driver provides common support for accessing the device,
494 additional drivers must be enabled in order to use the
495 functionality of the device.
498 bool "APM X-Gene GPIO controller support"
499 depends on ARM64 && OF_GPIO
501 This driver is to support the GPIO block within the APM X-Gene SoC
502 platform's generic flash controller. The GPIO pins are muxed with
503 the generic flash controller's address and data pins. Say yes
504 here to enable the GFC GPIO functionality.
507 tristate "APM X-Gene GPIO standby controller support"
508 depends on ARCH_XGENE && OF_GPIO
511 This driver supports the GPIO block within the APM X-Gene
512 Standby Domain. Say yes here to enable the GPIO functionality.
515 tristate "Xilinx GPIO support"
516 depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86 || MIPS)
518 Say yes here to support the Xilinx FPGA GPIO device
521 tristate "Netlogic XLP GPIO support"
522 depends on CPU_XLP && OF_GPIO
523 select GPIOLIB_IRQCHIP
525 This driver provides support for GPIO interface on Netlogic XLP MIPS64
526 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
532 bool "Xtensa GPIO32 support"
534 depends on HAVE_XTENSA_GPIO32
537 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
538 and EXPSTATE (output) ports
541 bool "LSI ZEVIO SoC memory mapped GPIOs"
542 depends on ARM && OF_GPIO
544 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
547 tristate "Xilinx Zynq GPIO support"
548 depends on ARCH_ZYNQ || ARCH_ZYNQMP
549 select GPIOLIB_IRQCHIP
551 Say yes here to support Xilinx Zynq GPIO controller.
555 menu "I2C GPIO expanders"
559 tristate "ADP5588 I2C GPIO expander"
562 This option enables support for 18 GPIOs found
563 on Analog Devices ADP5588 GPIO Expanders.
565 config GPIO_ADP5588_IRQ
566 bool "Interrupt controller support for ADP5588"
567 depends on GPIO_ADP5588=y
569 Say yes here to enable the adp5588 to be used as an interrupt
570 controller. It requires the driver to be built in the kernel.
573 tristate "Avionic Design N-bit GPIO expander"
574 depends on I2C && OF_GPIO
575 select GPIOLIB_IRQCHIP
577 This option enables support for N GPIOs found on Avionic Design
578 I2C GPIO expanders. The register space will be extended by powers
579 of two, so the controller will need to accommodate for that. For
580 example: if a controller provides 48 pins, 6 registers will be
581 enough to represent all pins, but the driver will assume a
582 register layout for 64 pins (8 registers).
585 tristate "Maxim MAX7300 GPIO expander"
589 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
592 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
595 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
596 Port Expanders. Each IO port on these chips has a fixed role of
597 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
598 Input and Output (designed by 'P'). The combinations are listed
601 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
602 max7322 (4I4O), max7323 (4P4O)
604 16 bits: max7324 (8I8O), max7325 (8P8O),
605 max7326 (4I12O), max7327 (4P12O)
607 Board setup code must specify the model to use, and the start
608 number for these GPIOs.
610 config GPIO_MAX732X_IRQ
611 bool "Interrupt controller support for MAX732x"
612 depends on GPIO_MAX732X=y
613 select GPIOLIB_IRQCHIP
615 Say yes here to enable the max732x to be used as an interrupt
616 controller. It requires the driver to be built in the kernel.
618 config GPIO_MC9S08DZ60
619 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
620 depends on I2C=y && MACH_MX35_3DS
622 Select this to enable the MC9S08DZ60 GPIO driver
625 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
628 Say yes here to provide access to several register-oriented
629 SMBus I/O expanders, made mostly by NXP or TI. Compatible
632 4 bits: pca9536, pca9537
634 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
635 pca9556, pca9557, pca9574, tca6408, xra1202
637 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
642 40 bits: pca9505, pca9698
644 config GPIO_PCA953X_IRQ
645 bool "Interrupt controller support for PCA953x"
646 depends on GPIO_PCA953X=y
647 select GPIOLIB_IRQCHIP
649 Say yes here to enable the pca953x to be used as an interrupt
650 controller. It requires the driver to be built in the kernel.
653 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
655 select GPIOLIB_IRQCHIP
658 Say yes here to provide access to most "quasi-bidirectional" I2C
659 GPIO expanders used for additional digital outputs or inputs.
660 Most of these parts are from NXP, though TI is a second source for
661 some of them. Compatible models include:
663 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
664 pca9670, pca9672, pca9674, pca9674a,
667 16 bits: pcf8575, pcf8575c, pca8575,
668 pca9671, pca9673, pca9675
670 Your board setup code will need to declare the expanders in
671 use, and assign numbers to the GPIOs they expose. Those GPIOs
672 can then be used from drivers and other kernel code, just like
673 other GPIOs, but only accessible from task contexts.
675 This driver provides an in-kernel interface to those GPIOs using
676 platform-neutral GPIO calls.
679 bool "Semtech SX150x I2C GPIO expander"
681 select GPIOLIB_IRQCHIP
684 Say yes here to provide support for Semtech SX150-series I2C
685 GPIO expanders. Compatible models include:
692 menu "ISA GPIO drivers"
694 config GPIO_104_IDIO_16
695 tristate "ACCES 104-IDIO-16 GPIO support"
698 Enables GPIO support for the ACCES 104-IDIO-16 family.
702 menu "MFD GPIO expanders"
705 tristate "GPIO Support for ADP5520 PMIC"
706 depends on PMIC_ADP5520
708 This option enables support for on-chip GPIO found
709 on Analog Devices ADP5520 PMICs.
712 tristate "Wolfson Microelectronics Arizona class devices"
713 depends on MFD_ARIZONA
715 Support for GPIOs on Wolfson Arizona class devices.
717 config GPIO_CRYSTAL_COVE
718 tristate "GPIO support for Crystal Cove PMIC"
719 depends on INTEL_SOC_PMIC
720 select GPIOLIB_IRQCHIP
722 Support for GPIO pins on Crystal Cove PMIC.
724 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
727 This driver can also be built as a module. If so, the module will be
728 called gpio-crystalcove.
731 tristate "AMD CS5535/CS5536 GPIO support"
732 depends on MFD_CS5535
734 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
735 can be used for quite a number of things. The CS5535/6 is found on
736 AMD Geode and Lemote Yeeloong devices.
741 tristate "Dialog DA9052 GPIO"
742 depends on PMIC_DA9052
744 Say yes here to enable the GPIO driver for the DA9052 chip.
747 tristate "Dialog Semiconductor DA9055 GPIO"
748 depends on MFD_DA9055
750 Say yes here to enable the GPIO driver for the DA9055 chip.
752 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
753 be controller by this driver.
755 If driver is built as a module it will be called gpio-da9055.
758 tristate "Diolan DLN2 GPIO support"
760 select GPIOLIB_IRQCHIP
763 Select this option to enable GPIO driver for the Diolan DLN2
766 This driver can also be built as a module. If so, the module
767 will be called gpio-dln2.
770 tristate "Janz VMOD-TTL Digital IO Module"
771 depends on MFD_JANZ_CMODIO
773 This enables support for the Janz VMOD-TTL Digital IO module.
774 This driver provides support for driving the pins in output
775 mode only. Input mode is not supported.
778 tristate "Kontron ETX / COMexpress GPIO"
779 depends on MFD_KEMPLD
781 This enables support for the PLD GPIO interface on some Kontron ETX
782 and COMexpress (ETXexpress) modules.
784 This driver can also be built as a module. If so, the module will be
788 tristate "TI/National Semiconductor LP3943 GPIO expander"
789 depends on MFD_LP3943
791 GPIO driver for LP3943 MFD.
792 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
793 Open drain outputs are required for this usage.
796 bool "Intel MSIC mixed signal gpio support"
797 depends on MFD_INTEL_MSIC
799 Enable support for GPIO on intel MSIC controllers found in
803 bool "TI PALMAS series PMICs GPIO"
804 depends on MFD_PALMAS
806 Select this option to enable GPIO driver for the TI PALMAS
810 bool "RICOH RC5T583 GPIO"
811 depends on MFD_RC5T583
813 Select this option to enable GPIO driver for the Ricoh RC5T583
815 This driver provides the support for driving/reading the gpio pins
816 of RC5T583 device through standard gpio library.
822 select GPIOLIB_IRQCHIP
824 This enables support for the GPIOs found on the STMPE I/O
829 depends on MFD_TC3589X
831 select GPIOLIB_IRQCHIP
833 This enables support for the GPIOs found on the TC3589X
836 config GPIO_TIMBERDALE
837 bool "Support for timberdale GPIO IP"
838 depends on MFD_TIMBERDALE
840 Add support for the GPIO IP in the timberdale FPGA.
844 depends on MFD_TPS6586X
846 Select this option to enable GPIO driver for the TPS6586X
851 depends on MFD_TPS65910
853 Select this option to enable GPIO driver for the TPS65910
857 tristate "TI TPS65912 GPIO"
858 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
860 This driver supports TPS65912 gpio chip
863 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
864 depends on TWL4030_CORE
866 Say yes here to access the GPIO signals of various multi-function
867 power management chips from Texas Instruments.
870 tristate "TWL6040 GPO"
871 depends on TWL6040_CORE
873 Say yes here to access the GPO signals of twl6040
874 audio chip from Texas Instruments.
877 tristate "Philips UCB1400 GPIO"
878 depends on UCB1400_CORE
880 This enables support for the Philips UCB1400 GPIO pins.
881 The UCB1400 is an AC97 audio codec.
884 tristate "WM831x GPIOs"
885 depends on MFD_WM831X
887 Say yes here to access the GPIO signals of WM831x power management
888 chips from Wolfson Microelectronics.
891 tristate "WM8350 GPIOs"
892 depends on MFD_WM8350
894 Say yes here to access the GPIO signals of WM8350 power management
895 chips from Wolfson Microelectronics.
898 tristate "WM8994 GPIOs"
899 depends on MFD_WM8994
901 Say yes here to access the GPIO signals of WM8994 audio hub
902 CODECs from Wolfson Microelectronics.
906 menu "PCI GPIO expanders"
910 tristate "AMD 8111 GPIO driver"
913 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
915 Note, that usually system firmware/ACPI handles GPIO pins on their
916 own and users might easily break their systems with uncarefull usage
922 tristate "BT8XX GPIO abuser"
923 depends on PCI && VIDEO_BT848=n
925 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
926 as a cheap PCI GPIO card.
928 This chip can be found on Miro, Hauppauge and STB TV-cards.
930 The card needs to be physically altered for using it as a
931 GPIO card. For more information on how to build a GPIO card
932 from a BT8xx TV card, see the documentation file at
933 Documentation/bt8xxgpio.txt
937 config GPIO_INTEL_MID
938 bool "Intel Mid GPIO support"
939 depends on PCI && X86
940 select GPIOLIB_IRQCHIP
942 Say Y here to support Intel Mid GPIO.
945 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
947 select GENERIC_IRQ_CHIP
949 ML7213 is companion chip for Intel Atom E6xx series.
950 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
951 Hub) which is for IVI(In-Vehicle Infotainment) use.
952 This driver can access the IOH's GPIO device.
955 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
956 depends on PCI && (X86_32 || COMPILE_TEST)
957 select GENERIC_IRQ_CHIP
959 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
960 which is an IOH(Input/Output Hub) for x86 embedded processor.
961 This driver can access PCH GPIO device.
963 This driver also can be used for LAPIS Semiconductor IOH(Input/
964 Output Hub), ML7223 and ML7831.
965 ML7223 IOH is for MP(Media Phone) use.
966 ML7831 IOH is for general purpose use.
967 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
968 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
971 tristate "RDC R-321x GPIO support"
976 Support for the RDC R321x SoC GPIOs over southbridge
977 PCI configuration space.
979 config GPIO_SODAVILLE
980 bool "Intel Sodaville GPIO support"
981 depends on X86 && PCI && OF
983 select GENERIC_IRQ_CHIP
985 Say Y here to support Intel Sodaville GPIO.
989 menu "SPI GPIO expanders"
990 depends on SPI_MASTER
993 tristate "74x164 serial-in/parallel-out 8-bits shift register"
994 depends on SPI_MASTER && OF
996 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
997 shift registers. This driver can be used to provide access
998 to more gpio outputs.
1001 tristate "Maxim MAX7301 GPIO expander"
1002 depends on SPI_MASTER
1005 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1007 config GPIO_MCP23S08
1008 tristate "Microchip MCP23xxx I/O expander"
1009 depends on (SPI_MASTER && !I2C) || I2C
1011 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1013 This provides a GPIO interface supporting inputs and outputs.
1014 The I2C versions of the chips can be used as interrupt-controller.
1017 tristate "Freescale MC33880 high-side/low-side switch"
1018 depends on SPI_MASTER
1020 SPI driver for Freescale MC33880 high-side/low-side switch.
1021 This provides GPIO interface supporting inputs and outputs.
1024 bool "ZTE ZX GPIO support"
1025 select GPIOLIB_IRQCHIP
1027 Say yes here to support the GPIO device on ZTE ZX SoCs.
1031 menu "USB GPIO expanders"
1034 config GPIO_VIPERBOARD
1035 tristate "Viperboard GPIO a & b support"
1036 depends on MFD_VIPERBOARD && USB
1038 Say yes here to access the GPIO signals of Nano River
1039 Technologies Viperboard. There are two GPIO chips on the
1040 board: gpioa and gpiob.
1041 See viperboard API specification and Nano
1042 River Tech's viperboard.h for detailed meaning
1043 of the module parameters.