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.
348 config GPIO_QCOM_SMP2P
349 bool "Qualcomm Shared Memory Point to Point support"
352 Say yes here to support the Qualcomm Shared Memory Point to Point
353 protocol, exposed to the system as GPIOs.
356 tristate "Renesas R-Car GPIO"
357 depends on ARCH_SHMOBILE || COMPILE_TEST
358 select GPIOLIB_IRQCHIP
360 Say yes here to support GPIO on Renesas R-Car SoCs.
364 depends on PLAT_SAMSUNG
366 Legacy GPIO support. Use only for platforms without support for
369 config GPIO_SPEAR_SPICS
370 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
371 depends on PLAT_SPEAR
372 select GENERIC_IRQ_CHIP
374 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
377 bool "STA2x11/ConneXt GPIO support"
378 depends on MFD_STA2X11
379 select GENERIC_IRQ_CHIP
381 Say yes here to support the STA2x11/ConneXt GPIO device.
382 The GPIO module has 128 GPIO pins with alternate functions.
385 bool "XWAY STP GPIOs"
388 This enables support for the Serial To Parallel (STP) unit found on
389 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
390 that can be up to 24 bit. This peripheral is aimed at driving leds.
391 Some of the gpios/leds can be auto updated by the soc with dsl and
395 tristate "GPIO based on SYSCON"
396 depends on MFD_SYSCON && OF
398 Say yes here to support GPIO functionality though SYSCON driver.
402 select GENERIC_IRQ_CHIP
406 bool "Toumaz Xenif TZ1090 GPIO support"
407 depends on SOC_TZ1090
408 select GENERIC_IRQ_CHIP
411 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
413 config GPIO_TZ1090_PDC
414 bool "Toumaz Xenif TZ1090 PDC GPIO support"
415 depends on SOC_TZ1090
418 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
422 depends on ARCH_MXC && SOC_VF610
423 select GPIOLIB_IRQCHIP
425 Say yes here to support Vybrid vf610 GPIOs.
428 tristate "NEC VR4100 series General-purpose I/O Uint support"
429 depends on CPU_VR41XX
431 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
434 tristate "VIA VX855/VX875 GPIO"
439 Support access to the VX855/VX875 GPIO lines through the gpio library.
441 This driver provides common support for accessing the device,
442 additional drivers must be enabled in order to use the
443 functionality of the device.
446 bool "APM X-Gene GPIO controller support"
447 depends on ARM64 && OF_GPIO
449 This driver is to support the GPIO block within the APM X-Gene SoC
450 platform's generic flash controller. The GPIO pins are muxed with
451 the generic flash controller's address and data pins. Say yes
452 here to enable the GFC GPIO functionality.
455 tristate "APM X-Gene GPIO standby controller support"
456 depends on ARCH_XGENE && OF_GPIO
459 This driver supports the GPIO block within the APM X-Gene
460 Standby Domain. Say yes here to enable the GPIO functionality.
463 tristate "Xilinx GPIO support"
466 Say yes here to support the Xilinx FPGA GPIO device
469 tristate "Netlogic XLP GPIO support"
470 depends on CPU_XLP && OF_GPIO
471 select GPIOLIB_IRQCHIP
473 This driver provides support for GPIO interface on Netlogic XLP MIPS64
474 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
480 bool "Xtensa GPIO32 support"
482 depends on HAVE_XTENSA_GPIO32
485 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
486 and EXPSTATE (output) ports
489 bool "LSI ZEVIO SoC memory mapped GPIOs"
490 depends on ARM && OF_GPIO
492 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
495 tristate "Xilinx Zynq GPIO support"
496 depends on ARCH_ZYNQ || ARCH_ZYNQMP
497 select GPIOLIB_IRQCHIP
499 Say yes here to support Xilinx Zynq GPIO controller.
502 bool "ZTE ZX GPIO support"
503 select GPIOLIB_IRQCHIP
505 Say yes here to support the GPIO device on ZTE ZX SoCs.
509 menu "Port-mapped I/O GPIO drivers"
510 depends on X86 # Unconditional I/O space access
512 config GPIO_104_IDIO_16
513 tristate "ACCES 104-IDIO-16 GPIO support"
515 Enables GPIO support for the ACCES 104-IDIO-16 family.
518 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
520 This option enables support for GPIOs found on Fintek Super-I/O
521 chips F71869, F71869A, F71882FG and F71889F.
523 To compile this driver as a module, choose M here: the module will
524 be called f7188x-gpio.
527 tristate "IT87xx GPIO support"
529 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
531 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
532 supports the IT8761E Super I/O chip as well.
534 To compile this driver as a module, choose M here: the module will
538 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
543 Say yes here to support GPIO interface on Intel Poulsbo SCH,
544 Intel Tunnel Creek processor, Intel Centerton processor or
545 Intel Quark X1000 SoC.
547 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
548 powered by the core power rail and are turned off during sleep
549 modes (S3 and higher). The remaining four GPIOs are powered by
550 the Intel SCH suspend power supply. These GPIOs remain
551 active during S3. The suspend powered GPIOs can be used to wake the
552 system from the Suspend-to-RAM state.
554 The Intel Tunnel Creek processor has 5 GPIOs powered by the
555 core power rail and 9 from suspend power supply.
557 The Intel Centerton processor has a total of 30 GPIO pins.
558 Twenty-one are powered by the core power rail and 9 from the
559 suspend power supply.
561 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
562 power well and 6 from the suspend power well.
565 tristate "SMSC SCH311x SuperI/O GPIO"
567 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
568 SCH3116 "Super I/O" chipsets.
570 To compile this driver as a module, choose M here: the module will
571 be called gpio-sch311x.
574 tristate "TS-5500 DIO blocks and compatibles"
575 depends on TS5500 || COMPILE_TEST
577 This driver supports Digital I/O exposed by pin blocks found on some
578 Technologic Systems platforms. It includes, but is not limited to, 3
579 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
584 menu "I2C GPIO expanders"
588 tristate "ADP5588 I2C GPIO expander"
590 This option enables support for 18 GPIOs found
591 on Analog Devices ADP5588 GPIO Expanders.
593 config GPIO_ADP5588_IRQ
594 bool "Interrupt controller support for ADP5588"
595 depends on GPIO_ADP5588=y
597 Say yes here to enable the adp5588 to be used as an interrupt
598 controller. It requires the driver to be built in the kernel.
601 tristate "Avionic Design N-bit GPIO expander"
603 select GPIOLIB_IRQCHIP
605 This option enables support for N GPIOs found on Avionic Design
606 I2C GPIO expanders. The register space will be extended by powers
607 of two, so the controller will need to accommodate for that. For
608 example: if a controller provides 48 pins, 6 registers will be
609 enough to represent all pins, but the driver will assume a
610 register layout for 64 pins (8 registers).
613 tristate "Maxim MAX7300 GPIO expander"
616 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
619 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
621 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
622 Port Expanders. Each IO port on these chips has a fixed role of
623 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
624 Input and Output (designed by 'P'). The combinations are listed
627 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
628 max7322 (4I4O), max7323 (4P4O)
630 16 bits: max7324 (8I8O), max7325 (8P8O),
631 max7326 (4I12O), max7327 (4P12O)
633 Board setup code must specify the model to use, and the start
634 number for these GPIOs.
636 config GPIO_MAX732X_IRQ
637 bool "Interrupt controller support for MAX732x"
638 depends on GPIO_MAX732X=y
639 select GPIOLIB_IRQCHIP
641 Say yes here to enable the max732x to be used as an interrupt
642 controller. It requires the driver to be built in the kernel.
644 config GPIO_MC9S08DZ60
645 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
646 depends on I2C=y && MACH_MX35_3DS
648 Select this to enable the MC9S08DZ60 GPIO driver
651 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
653 Say yes here to provide access to several register-oriented
654 SMBus I/O expanders, made mostly by NXP or TI. Compatible
657 4 bits: pca9536, pca9537
659 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
660 pca9556, pca9557, pca9574, tca6408, xra1202
662 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
667 40 bits: pca9505, pca9698
669 config GPIO_PCA953X_IRQ
670 bool "Interrupt controller support for PCA953x"
671 depends on GPIO_PCA953X=y
672 select GPIOLIB_IRQCHIP
674 Say yes here to enable the pca953x to be used as an interrupt
675 controller. It requires the driver to be built in the kernel.
678 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
679 select GPIOLIB_IRQCHIP
682 Say yes here to provide access to most "quasi-bidirectional" I2C
683 GPIO expanders used for additional digital outputs or inputs.
684 Most of these parts are from NXP, though TI is a second source for
685 some of them. Compatible models include:
687 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
688 pca9670, pca9672, pca9674, pca9674a,
691 16 bits: pcf8575, pcf8575c, pca8575,
692 pca9671, pca9673, pca9675
694 Your board setup code will need to declare the expanders in
695 use, and assign numbers to the GPIOs they expose. Those GPIOs
696 can then be used from drivers and other kernel code, just like
697 other GPIOs, but only accessible from task contexts.
699 This driver provides an in-kernel interface to those GPIOs using
700 platform-neutral GPIO calls.
703 bool "Semtech SX150x I2C GPIO expander"
705 select GPIOLIB_IRQCHIP
708 Say yes here to provide support for Semtech SX150-series I2C
709 GPIO expanders. Compatible models include:
716 menu "MFD GPIO expanders"
719 tristate "GPIO Support for ADP5520 PMIC"
720 depends on PMIC_ADP5520
722 This option enables support for on-chip GPIO found
723 on Analog Devices ADP5520 PMICs.
726 tristate "Wolfson Microelectronics Arizona class devices"
727 depends on MFD_ARIZONA
729 Support for GPIOs on Wolfson Arizona class devices.
731 config GPIO_CRYSTAL_COVE
732 tristate "GPIO support for Crystal Cove PMIC"
733 depends on INTEL_SOC_PMIC
734 select GPIOLIB_IRQCHIP
736 Support for GPIO pins on Crystal Cove PMIC.
738 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
741 This driver can also be built as a module. If so, the module will be
742 called gpio-crystalcove.
745 tristate "AMD CS5535/CS5536 GPIO support"
746 depends on MFD_CS5535
748 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
749 can be used for quite a number of things. The CS5535/6 is found on
750 AMD Geode and Lemote Yeeloong devices.
755 tristate "Dialog DA9052 GPIO"
756 depends on PMIC_DA9052
758 Say yes here to enable the GPIO driver for the DA9052 chip.
761 tristate "Dialog Semiconductor DA9055 GPIO"
762 depends on MFD_DA9055
764 Say yes here to enable the GPIO driver for the DA9055 chip.
766 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
767 be controller by this driver.
769 If driver is built as a module it will be called gpio-da9055.
772 tristate "Diolan DLN2 GPIO support"
774 select GPIOLIB_IRQCHIP
777 Select this option to enable GPIO driver for the Diolan DLN2
780 This driver can also be built as a module. If so, the module
781 will be called gpio-dln2.
784 tristate "Janz VMOD-TTL Digital IO Module"
785 depends on MFD_JANZ_CMODIO
787 This enables support for the Janz VMOD-TTL Digital IO module.
788 This driver provides support for driving the pins in output
789 mode only. Input mode is not supported.
792 tristate "Kontron ETX / COMexpress GPIO"
793 depends on MFD_KEMPLD
795 This enables support for the PLD GPIO interface on some Kontron ETX
796 and COMexpress (ETXexpress) modules.
798 This driver can also be built as a module. If so, the module will be
802 tristate "TI/National Semiconductor LP3943 GPIO expander"
803 depends on MFD_LP3943
805 GPIO driver for LP3943 MFD.
806 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
807 Open drain outputs are required for this usage.
810 bool "Intel MSIC mixed signal gpio support"
811 depends on MFD_INTEL_MSIC
813 Enable support for GPIO on intel MSIC controllers found in
817 bool "TI PALMAS series PMICs GPIO"
818 depends on MFD_PALMAS
820 Select this option to enable GPIO driver for the TI PALMAS
824 bool "RICOH RC5T583 GPIO"
825 depends on MFD_RC5T583
827 Select this option to enable GPIO driver for the Ricoh RC5T583
829 This driver provides the support for driving/reading the gpio pins
830 of RC5T583 device through standard gpio library.
836 select GPIOLIB_IRQCHIP
838 This enables support for the GPIOs found on the STMPE I/O
843 depends on MFD_TC3589X
845 select GPIOLIB_IRQCHIP
847 This enables support for the GPIOs found on the TC3589X
850 config GPIO_TIMBERDALE
851 bool "Support for timberdale GPIO IP"
852 depends on MFD_TIMBERDALE
854 Add support for the GPIO IP in the timberdale FPGA.
858 depends on MFD_TPS6586X
860 Select this option to enable GPIO driver for the TPS6586X
865 depends on MFD_TPS65910
867 Select this option to enable GPIO driver for the TPS65910
871 tristate "TI TPS65912 GPIO"
872 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
874 This driver supports TPS65912 gpio chip
877 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
878 depends on TWL4030_CORE
880 Say yes here to access the GPIO signals of various multi-function
881 power management chips from Texas Instruments.
884 tristate "TWL6040 GPO"
885 depends on TWL6040_CORE
887 Say yes here to access the GPO signals of twl6040
888 audio chip from Texas Instruments.
891 tristate "Philips UCB1400 GPIO"
892 depends on UCB1400_CORE
894 This enables support for the Philips UCB1400 GPIO pins.
895 The UCB1400 is an AC97 audio codec.
898 tristate "WM831x GPIOs"
899 depends on MFD_WM831X
901 Say yes here to access the GPIO signals of WM831x power management
902 chips from Wolfson Microelectronics.
905 tristate "WM8350 GPIOs"
906 depends on MFD_WM8350
908 Say yes here to access the GPIO signals of WM8350 power management
909 chips from Wolfson Microelectronics.
912 tristate "WM8994 GPIOs"
913 depends on MFD_WM8994
915 Say yes here to access the GPIO signals of WM8994 audio hub
916 CODECs from Wolfson Microelectronics.
920 menu "PCI GPIO expanders"
924 tristate "AMD 8111 GPIO driver"
927 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
929 Note, that usually system firmware/ACPI handles GPIO pins on their
930 own and users might easily break their systems with uncarefull usage
936 tristate "BT8XX GPIO abuser"
937 depends on PCI && VIDEO_BT848=n
939 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
940 as a cheap PCI GPIO card.
942 This chip can be found on Miro, Hauppauge and STB TV-cards.
944 The card needs to be physically altered for using it as a
945 GPIO card. For more information on how to build a GPIO card
946 from a BT8xx TV card, see the documentation file at
947 Documentation/bt8xxgpio.txt
951 config GPIO_INTEL_MID
952 bool "Intel Mid GPIO support"
953 depends on PCI && X86
954 select GPIOLIB_IRQCHIP
956 Say Y here to support Intel Mid GPIO.
959 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
961 select GENERIC_IRQ_CHIP
963 ML7213 is companion chip for Intel Atom E6xx series.
964 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
965 Hub) which is for IVI(In-Vehicle Infotainment) use.
966 This driver can access the IOH's GPIO device.
969 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
970 depends on PCI && (X86_32 || COMPILE_TEST)
971 select GENERIC_IRQ_CHIP
973 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
974 which is an IOH(Input/Output Hub) for x86 embedded processor.
975 This driver can access PCH GPIO device.
977 This driver also can be used for LAPIS Semiconductor IOH(Input/
978 Output Hub), ML7223 and ML7831.
979 ML7223 IOH is for MP(Media Phone) use.
980 ML7831 IOH is for general purpose use.
981 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
982 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
985 tristate "RDC R-321x GPIO support"
990 Support for the RDC R321x SoC GPIOs over southbridge
991 PCI configuration space.
993 config GPIO_SODAVILLE
994 bool "Intel Sodaville GPIO support"
995 depends on X86 && PCI && OF
997 select GENERIC_IRQ_CHIP
999 Say Y here to support Intel Sodaville GPIO.
1003 menu "SPI GPIO expanders"
1004 depends on SPI_MASTER
1007 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1010 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1011 shift registers. This driver can be used to provide access
1012 to more gpio outputs.
1015 tristate "Maxim MAX7301 GPIO expander"
1018 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1021 tristate "Freescale MC33880 high-side/low-side switch"
1023 SPI driver for Freescale MC33880 high-side/low-side switch.
1024 This provides GPIO interface supporting inputs and outputs.
1028 menu "SPI or I2C GPIO expanders"
1029 depends on (SPI_MASTER && !I2C) || I2C
1031 config GPIO_MCP23S08
1032 tristate "Microchip MCP23xxx I/O expander"
1034 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1036 This provides a GPIO interface supporting inputs and outputs.
1037 The I2C versions of the chips can be used as interrupt-controller.
1041 menu "USB GPIO expanders"
1044 config GPIO_VIPERBOARD
1045 tristate "Viperboard GPIO a & b support"
1046 depends on MFD_VIPERBOARD && USB
1048 Say yes here to access the GPIO signals of Nano River
1049 Technologies Viperboard. There are two GPIO chips on the
1050 board: gpioa and gpiob.
1051 See viperboard API specification and Nano
1052 River Tech's viperboard.h for detailed meaning
1053 of the module parameters.