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 || BMIPS_GENERIC)
138 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || 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
341 tristate "Renesas R-Car GPIO"
342 depends on ARCH_SHMOBILE || COMPILE_TEST
343 select GPIOLIB_IRQCHIP
345 Say yes here to support GPIO on Renesas R-Car SoCs.
349 depends on PLAT_SAMSUNG
351 Legacy GPIO support. Use only for platforms without support for
354 config GPIO_SPEAR_SPICS
355 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
356 depends on PLAT_SPEAR
357 select GENERIC_IRQ_CHIP
359 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
362 bool "STA2x11/ConneXt GPIO support"
363 depends on MFD_STA2X11
364 select GENERIC_IRQ_CHIP
366 Say yes here to support the STA2x11/ConneXt GPIO device.
367 The GPIO module has 128 GPIO pins with alternate functions.
370 bool "XWAY STP GPIOs"
373 This enables support for the Serial To Parallel (STP) unit found on
374 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
375 that can be up to 24 bit. This peripheral is aimed at driving leds.
376 Some of the gpios/leds can be auto updated by the soc with dsl and
380 tristate "GPIO based on SYSCON"
381 depends on MFD_SYSCON && OF
383 Say yes here to support GPIO functionality though SYSCON driver.
387 select GENERIC_IRQ_CHIP
391 bool "Toumaz Xenif TZ1090 GPIO support"
392 depends on SOC_TZ1090
393 select GENERIC_IRQ_CHIP
396 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
398 config GPIO_TZ1090_PDC
399 bool "Toumaz Xenif TZ1090 PDC GPIO support"
400 depends on SOC_TZ1090
403 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
407 depends on ARCH_MXC && SOC_VF610
408 select GPIOLIB_IRQCHIP
410 Say yes here to support Vybrid vf610 GPIOs.
413 tristate "NEC VR4100 series General-purpose I/O Uint support"
414 depends on CPU_VR41XX
416 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
419 tristate "VIA VX855/VX875 GPIO"
424 Support access to the VX855/VX875 GPIO lines through the gpio library.
426 This driver provides common support for accessing the device,
427 additional drivers must be enabled in order to use the
428 functionality of the device.
431 bool "APM X-Gene GPIO controller support"
432 depends on ARM64 && OF_GPIO
434 This driver is to support the GPIO block within the APM X-Gene SoC
435 platform's generic flash controller. The GPIO pins are muxed with
436 the generic flash controller's address and data pins. Say yes
437 here to enable the GFC GPIO functionality.
440 tristate "APM X-Gene GPIO standby controller support"
441 depends on ARCH_XGENE && OF_GPIO
444 This driver supports the GPIO block within the APM X-Gene
445 Standby Domain. Say yes here to enable the GPIO functionality.
448 tristate "Xilinx GPIO support"
451 Say yes here to support the Xilinx FPGA GPIO device
454 tristate "Netlogic XLP GPIO support"
455 depends on CPU_XLP && OF_GPIO
456 select GPIOLIB_IRQCHIP
458 This driver provides support for GPIO interface on Netlogic XLP MIPS64
459 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
465 bool "Xtensa GPIO32 support"
467 depends on HAVE_XTENSA_GPIO32
470 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
471 and EXPSTATE (output) ports
474 bool "LSI ZEVIO SoC memory mapped GPIOs"
475 depends on ARM && OF_GPIO
477 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
480 tristate "Xilinx Zynq GPIO support"
481 depends on ARCH_ZYNQ || ARCH_ZYNQMP
482 select GPIOLIB_IRQCHIP
484 Say yes here to support Xilinx Zynq GPIO controller.
487 bool "ZTE ZX GPIO support"
488 select GPIOLIB_IRQCHIP
490 Say yes here to support the GPIO device on ZTE ZX SoCs.
494 menu "Port-mapped I/O GPIO drivers"
495 depends on X86 # Unconditional I/O space access
497 config GPIO_104_IDIO_16
498 tristate "ACCES 104-IDIO-16 GPIO support"
499 select GPIOLIB_IRQCHIP
501 Enables GPIO support for the ACCES 104-IDIO-16 family. The base port
502 address for the device may be set via the idio_16_base module
503 parameter. The interrupt line number for the device may be set via the
504 idio_16_irq module parameter.
506 config GPIO_104_IDI_48
507 tristate "ACCES 104-IDI-48 GPIO support"
508 select GPIOLIB_IRQCHIP
510 Enables GPIO support for the ACCES 104-IDI-48 family. The base port
511 address for the device may be configured via the idi_48_base module
512 parameter. The interrupt line number for the device may be configured
513 via the idi_48_irq module parameter.
516 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
518 This option enables support for GPIOs found on Fintek Super-I/O
519 chips F71869, F71869A, F71882FG and F71889F.
521 To compile this driver as a module, choose M here: the module will
522 be called f7188x-gpio.
525 tristate "IT87xx GPIO support"
527 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
529 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
530 supports the IT8761E Super I/O chip as well.
532 To compile this driver as a module, choose M here: the module will
536 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
541 Say yes here to support GPIO interface on Intel Poulsbo SCH,
542 Intel Tunnel Creek processor, Intel Centerton processor or
543 Intel Quark X1000 SoC.
545 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
546 powered by the core power rail and are turned off during sleep
547 modes (S3 and higher). The remaining four GPIOs are powered by
548 the Intel SCH suspend power supply. These GPIOs remain
549 active during S3. The suspend powered GPIOs can be used to wake the
550 system from the Suspend-to-RAM state.
552 The Intel Tunnel Creek processor has 5 GPIOs powered by the
553 core power rail and 9 from suspend power supply.
555 The Intel Centerton processor has a total of 30 GPIO pins.
556 Twenty-one are powered by the core power rail and 9 from the
557 suspend power supply.
559 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
560 power well and 6 from the suspend power well.
563 tristate "SMSC SCH311x SuperI/O GPIO"
565 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
566 SCH3116 "Super I/O" chipsets.
568 To compile this driver as a module, choose M here: the module will
569 be called gpio-sch311x.
572 tristate "TS-5500 DIO blocks and compatibles"
573 depends on TS5500 || COMPILE_TEST
575 This driver supports Digital I/O exposed by pin blocks found on some
576 Technologic Systems platforms. It includes, but is not limited to, 3
577 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
582 menu "I2C GPIO expanders"
586 tristate "ADP5588 I2C GPIO expander"
588 This option enables support for 18 GPIOs found
589 on Analog Devices ADP5588 GPIO Expanders.
591 config GPIO_ADP5588_IRQ
592 bool "Interrupt controller support for ADP5588"
593 depends on GPIO_ADP5588=y
595 Say yes here to enable the adp5588 to be used as an interrupt
596 controller. It requires the driver to be built in the kernel.
599 tristate "Avionic Design N-bit GPIO expander"
601 select GPIOLIB_IRQCHIP
603 This option enables support for N GPIOs found on Avionic Design
604 I2C GPIO expanders. The register space will be extended by powers
605 of two, so the controller will need to accommodate for that. For
606 example: if a controller provides 48 pins, 6 registers will be
607 enough to represent all pins, but the driver will assume a
608 register layout for 64 pins (8 registers).
611 tristate "Maxim MAX7300 GPIO expander"
614 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
617 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
619 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
620 Port Expanders. Each IO port on these chips has a fixed role of
621 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
622 Input and Output (designed by 'P'). The combinations are listed
625 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
626 max7322 (4I4O), max7323 (4P4O)
628 16 bits: max7324 (8I8O), max7325 (8P8O),
629 max7326 (4I12O), max7327 (4P12O)
631 Board setup code must specify the model to use, and the start
632 number for these GPIOs.
634 config GPIO_MAX732X_IRQ
635 bool "Interrupt controller support for MAX732x"
636 depends on GPIO_MAX732X=y
637 select GPIOLIB_IRQCHIP
639 Say yes here to enable the max732x to be used as an interrupt
640 controller. It requires the driver to be built in the kernel.
642 config GPIO_MC9S08DZ60
643 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
644 depends on I2C=y && MACH_MX35_3DS
646 Select this to enable the MC9S08DZ60 GPIO driver
649 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
651 Say yes here to provide access to several register-oriented
652 SMBus I/O expanders, made mostly by NXP or TI. Compatible
655 4 bits: pca9536, pca9537
657 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
658 pca9556, pca9557, pca9574, tca6408, xra1202
660 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
665 40 bits: pca9505, pca9698
667 config GPIO_PCA953X_IRQ
668 bool "Interrupt controller support for PCA953x"
669 depends on GPIO_PCA953X=y
670 select GPIOLIB_IRQCHIP
672 Say yes here to enable the pca953x to be used as an interrupt
673 controller. It requires the driver to be built in the kernel.
676 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
677 select GPIOLIB_IRQCHIP
680 Say yes here to provide access to most "quasi-bidirectional" I2C
681 GPIO expanders used for additional digital outputs or inputs.
682 Most of these parts are from NXP, though TI is a second source for
683 some of them. Compatible models include:
685 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
686 pca9670, pca9672, pca9674, pca9674a,
689 16 bits: pcf8575, pcf8575c, pca8575,
690 pca9671, pca9673, pca9675
692 Your board setup code will need to declare the expanders in
693 use, and assign numbers to the GPIOs they expose. Those GPIOs
694 can then be used from drivers and other kernel code, just like
695 other GPIOs, but only accessible from task contexts.
697 This driver provides an in-kernel interface to those GPIOs using
698 platform-neutral GPIO calls.
701 bool "Semtech SX150x I2C GPIO expander"
703 select GPIOLIB_IRQCHIP
706 Say yes here to provide support for Semtech SX150-series I2C
707 GPIO expanders. Compatible models include:
714 menu "MFD GPIO expanders"
717 tristate "GPIO Support for ADP5520 PMIC"
718 depends on PMIC_ADP5520
720 This option enables support for on-chip GPIO found
721 on Analog Devices ADP5520 PMICs.
724 tristate "Wolfson Microelectronics Arizona class devices"
725 depends on MFD_ARIZONA
727 Support for GPIOs on Wolfson Arizona class devices.
729 config GPIO_CRYSTAL_COVE
730 tristate "GPIO support for Crystal Cove PMIC"
731 depends on INTEL_SOC_PMIC
732 select GPIOLIB_IRQCHIP
734 Support for GPIO pins on Crystal Cove PMIC.
736 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
739 This driver can also be built as a module. If so, the module will be
740 called gpio-crystalcove.
743 tristate "AMD CS5535/CS5536 GPIO support"
744 depends on MFD_CS5535
746 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
747 can be used for quite a number of things. The CS5535/6 is found on
748 AMD Geode and Lemote Yeeloong devices.
753 tristate "Dialog DA9052 GPIO"
754 depends on PMIC_DA9052
756 Say yes here to enable the GPIO driver for the DA9052 chip.
759 tristate "Dialog Semiconductor DA9055 GPIO"
760 depends on MFD_DA9055
762 Say yes here to enable the GPIO driver for the DA9055 chip.
764 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
765 be controller by this driver.
767 If driver is built as a module it will be called gpio-da9055.
770 tristate "Diolan DLN2 GPIO support"
772 select GPIOLIB_IRQCHIP
775 Select this option to enable GPIO driver for the Diolan DLN2
778 This driver can also be built as a module. If so, the module
779 will be called gpio-dln2.
782 tristate "Janz VMOD-TTL Digital IO Module"
783 depends on MFD_JANZ_CMODIO
785 This enables support for the Janz VMOD-TTL Digital IO module.
786 This driver provides support for driving the pins in output
787 mode only. Input mode is not supported.
790 tristate "Kontron ETX / COMexpress GPIO"
791 depends on MFD_KEMPLD
793 This enables support for the PLD GPIO interface on some Kontron ETX
794 and COMexpress (ETXexpress) modules.
796 This driver can also be built as a module. If so, the module will be
800 tristate "TI/National Semiconductor LP3943 GPIO expander"
801 depends on MFD_LP3943
803 GPIO driver for LP3943 MFD.
804 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
805 Open drain outputs are required for this usage.
808 bool "Intel MSIC mixed signal gpio support"
809 depends on MFD_INTEL_MSIC
811 Enable support for GPIO on intel MSIC controllers found in
815 bool "TI PALMAS series PMICs GPIO"
816 depends on MFD_PALMAS
818 Select this option to enable GPIO driver for the TI PALMAS
822 bool "RICOH RC5T583 GPIO"
823 depends on MFD_RC5T583
825 Select this option to enable GPIO driver for the Ricoh RC5T583
827 This driver provides the support for driving/reading the gpio pins
828 of RC5T583 device through standard gpio library.
834 select GPIOLIB_IRQCHIP
836 This enables support for the GPIOs found on the STMPE I/O
841 depends on MFD_TC3589X
843 select GPIOLIB_IRQCHIP
845 This enables support for the GPIOs found on the TC3589X
848 config GPIO_TIMBERDALE
849 bool "Support for timberdale GPIO IP"
850 depends on MFD_TIMBERDALE
852 Add support for the GPIO IP in the timberdale FPGA.
856 depends on MFD_TPS6586X
858 Select this option to enable GPIO driver for the TPS6586X
863 depends on MFD_TPS65910
865 Select this option to enable GPIO driver for the TPS65910
869 tristate "TI TPS65912 GPIO"
870 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
872 This driver supports TPS65912 gpio chip
875 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
876 depends on TWL4030_CORE
878 Say yes here to access the GPIO signals of various multi-function
879 power management chips from Texas Instruments.
882 tristate "TWL6040 GPO"
883 depends on TWL6040_CORE
885 Say yes here to access the GPO signals of twl6040
886 audio chip from Texas Instruments.
889 tristate "Philips UCB1400 GPIO"
890 depends on UCB1400_CORE
892 This enables support for the Philips UCB1400 GPIO pins.
893 The UCB1400 is an AC97 audio codec.
896 tristate "WM831x GPIOs"
897 depends on MFD_WM831X
899 Say yes here to access the GPIO signals of WM831x power management
900 chips from Wolfson Microelectronics.
903 tristate "WM8350 GPIOs"
904 depends on MFD_WM8350
906 Say yes here to access the GPIO signals of WM8350 power management
907 chips from Wolfson Microelectronics.
910 tristate "WM8994 GPIOs"
911 depends on MFD_WM8994
913 Say yes here to access the GPIO signals of WM8994 audio hub
914 CODECs from Wolfson Microelectronics.
918 menu "PCI GPIO expanders"
922 tristate "AMD 8111 GPIO driver"
924 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
926 Note, that usually system firmware/ACPI handles GPIO pins on their
927 own and users might easily break their systems with uncarefull usage
933 tristate "BT8XX GPIO abuser"
934 depends on VIDEO_BT848=n
936 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
937 as a cheap PCI GPIO card.
939 This chip can be found on Miro, Hauppauge and STB TV-cards.
941 The card needs to be physically altered for using it as a
942 GPIO card. For more information on how to build a GPIO card
943 from a BT8xx TV card, see the documentation file at
944 Documentation/bt8xxgpio.txt
948 config GPIO_INTEL_MID
949 bool "Intel Mid GPIO support"
951 select GPIOLIB_IRQCHIP
953 Say Y here to support Intel Mid GPIO.
956 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
957 select GENERIC_IRQ_CHIP
959 ML7213 is companion chip for Intel Atom E6xx series.
960 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
961 Hub) which is for IVI(In-Vehicle Infotainment) use.
962 This driver can access the IOH's GPIO device.
965 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
966 depends on X86_32 || MIPS || COMPILE_TEST
967 select GENERIC_IRQ_CHIP
969 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
970 which is an IOH(Input/Output Hub) for x86 embedded processor.
971 This driver can access PCH GPIO device.
973 This driver also can be used for LAPIS Semiconductor IOH(Input/
974 Output Hub), ML7223 and ML7831.
975 ML7223 IOH is for MP(Media Phone) use.
976 ML7831 IOH is for general purpose use.
977 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
978 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
981 tristate "RDC R-321x GPIO support"
985 Support for the RDC R321x SoC GPIOs over southbridge
986 PCI configuration space.
988 config GPIO_SODAVILLE
989 bool "Intel Sodaville GPIO support"
992 select GENERIC_IRQ_CHIP
994 Say Y here to support Intel Sodaville GPIO.
998 menu "SPI GPIO expanders"
999 depends on SPI_MASTER
1002 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1005 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1006 shift registers. This driver can be used to provide access
1007 to more gpio outputs.
1010 tristate "Maxim MAX7301 GPIO expander"
1013 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1016 tristate "Freescale MC33880 high-side/low-side switch"
1018 SPI driver for Freescale MC33880 high-side/low-side switch.
1019 This provides GPIO interface supporting inputs and outputs.
1023 menu "SPI or I2C GPIO expanders"
1024 depends on (SPI_MASTER && !I2C) || I2C
1026 config GPIO_MCP23S08
1027 tristate "Microchip MCP23xxx I/O expander"
1029 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1031 This provides a GPIO interface supporting inputs and outputs.
1032 The I2C versions of the chips can be used as interrupt-controller.
1036 menu "USB GPIO expanders"
1039 config GPIO_VIPERBOARD
1040 tristate "Viperboard GPIO a & b support"
1041 depends on MFD_VIPERBOARD
1043 Say yes here to access the GPIO signals of Nano River
1044 Technologies Viperboard. There are two GPIO chips on the
1045 board: gpioa and gpiob.
1046 See viperboard API specification and Nano
1047 River Tech's viperboard.h for detailed meaning
1048 of the module parameters.