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.
59 config GPIOLIB_IRQCHIP
64 bool "Debug GPIO calls"
65 depends on DEBUG_KERNEL
67 Say Y here to add some extra checks and diagnostics to GPIO calls.
68 These checks help ensure that GPIOs have been properly initialized
69 before they are used, and that sleeping calls are not made from
70 non-sleeping contexts. They can make bitbanged serial protocols
71 slower. The diagnostics help catch the type of setup errors
72 that are most common when setting up new platforms or boards.
75 bool "/sys/class/gpio/... (sysfs interface)"
78 Say Y here to add a sysfs interface for GPIOs.
80 This is mostly useful to work around omissions in a system's
81 kernel support. Those are common in custom and semicustom
82 hardware assembled using standard kernels with a minimum of
83 custom patches. In those cases, userspace code may import
84 a given GPIO from the kernel, if no kernel driver requested it.
86 Kernel drivers may also request that a particular GPIO be
87 exported to userspace; this can be useful when debugging.
92 # put drivers in the right section, in alphabetical order
94 # This symbol is selected by both I2C and SPI expanders
98 menu "Memory mapped GPIO drivers"
100 config GPIO_74XX_MMIO
101 tristate "GPIO driver for 74xx-ICs with MMIO access"
105 Say yes here to support GPIO functionality for 74xx-compatible ICs
106 with MMIO access. Compatible models include:
107 1 bit: 741G125 (Input), 741G74 (Output)
108 2 bits: 742G125 (Input), 7474 (Output)
109 4 bits: 74125 (Input), 74175 (Output)
110 6 bits: 74365 (Input), 74174 (Output)
111 8 bits: 74244 (Input), 74273 (Output)
112 16 bits: 741624 (Input), 7416374 (Output)
115 tristate "Altera GPIO"
117 select GPIOLIB_IRQCHIP
119 Say Y or M here to build support for the Altera PIO device.
121 If driver is built as a module it will be called gpio-altera.
124 tristate "AMD Promontory GPIO support"
127 driver for GPIO functionality on Promontory IOHub
128 Require ACPI ASL code to enumerate as a platform device.
131 bool "Broadcom Kona GPIO"
132 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
134 Turn on GPIO support for Broadcom "Kona" chips.
137 tristate "BRCMSTB GPIO support"
138 default y if ARCH_BRCMSTB
139 depends on OF_GPIO && (ARCH_BRCMSTB || COMPILE_TEST)
141 select GPIOLIB_IRQCHIP
143 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
146 tristate "CLPS711X GPIO support"
147 depends on ARCH_CLPS711X || COMPILE_TEST
150 Say yes here to support GPIO on CLPS711X SoCs.
153 bool "TI Davinci/Keystone GPIO support"
154 default y if ARCH_DAVINCI
155 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
157 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
160 tristate "Synopsys DesignWare APB GPIO driver"
162 select GENERIC_IRQ_CHIP
164 Say Y or M here to build support for the Synopsys DesignWare APB
168 tristate "Emma Mobile GPIO"
169 depends on ARM && OF_GPIO
171 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
175 depends on ARCH_EP93XX
179 bool "Axis ETRAX FS General I/O"
180 depends on CRIS || COMPILE_TEST
183 select GPIOLIB_IRQCHIP
185 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
188 bool "GE FPGA based GPIO"
192 Support for common GPIO functionality provided on some GE Single Board
195 This driver provides basic support (configure as input or output, read
196 and write pin state) for GPIO implemented in a number of GE single
199 config GPIO_GENERIC_PLATFORM
200 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
203 Say yes here to support basic platform_device memory-mapped GPIO controllers.
206 tristate "Aeroflex Gaisler GRGPIO support"
211 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
212 VHDL IP core library.
215 tristate "Intel ICH GPIO"
216 depends on PCI && X86
220 Say yes here to support the GPIO functionality of a number of Intel
221 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
222 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
223 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
228 tristate "Intel IOP GPIO"
229 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
231 Say yes here to support the GPIO functionality of a number of Intel
237 bool "Loongson-2/3 GPIO support"
238 depends on CPU_LOONGSON2 || CPU_LOONGSON3
240 driver for GPIO functionality on Loongson-2F/3A/3B processors.
243 bool "NXP LPC18XX/43XX GPIO support"
244 default y if ARCH_LPC18XX
245 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
247 Select this option to enable GPIO driver for
248 NXP LPC18XX/43XX devices.
250 config GPIO_LYNXPOINT
251 tristate "Intel Lynxpoint GPIO support"
252 depends on ACPI && X86
253 select GPIOLIB_IRQCHIP
255 driver for GPIO functionality on Intel Lynxpoint PCH chipset
256 Requires ACPI device enumeration code to set up a platform device.
259 bool "GPIO support for Fujitsu MB86S7x Platforms"
260 depends on ARCH_MB86S7X
262 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
264 config GPIO_MM_LANTIQ
265 bool "Lantiq Memory mapped GPIOs"
266 depends on LANTIQ && SOC_XWAY
268 This enables support for memory mapped GPIOs on the External Bus Unit
269 (EBU) found on Lantiq SoCs. The gpios are output only as they are
270 created by attaching a 16bit latch to the bus.
273 bool "MOXART GPIO support"
274 depends on ARCH_MOXART
277 Select this option to enable GPIO driver for
278 MOXA ART SoC devices.
282 depends on PPC_MPC52xx
285 bool "MPC512x/MPC8xxx GPIO support"
286 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
287 FSL_SOC_BOOKE || PPC_86xx
289 Say Y here if you're going to use hardware that connects to the
290 MPC512x/831x/834x/837x/8572/8610 GPIOs.
294 depends on PLAT_ORION
296 select GENERIC_IRQ_CHIP
302 select GENERIC_IRQ_CHIP
308 select GENERIC_IRQ_CHIP
311 tristate "Cavium OCTEON GPIO"
312 depends on GPIOLIB && CAVIUM_OCTEON_SOC
315 Say yes here to support the on-chip GPIO lines on the OCTEON
319 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
320 default y if ARCH_OMAP
322 select GENERIC_IRQ_CHIP
323 select GPIOLIB_IRQCHIP
325 Say yes here to enable GPIO support for TI OMAP SoCs.
328 bool "PrimeCell PL061 GPIO support"
331 select GPIOLIB_IRQCHIP
333 Say yes here to support the PrimeCell PL061 GPIO device
336 bool "PXA GPIO support"
337 depends on ARCH_PXA || ARCH_MMP
339 Say yes here to support the PXA GPIO device
342 tristate "Renesas R-Car GPIO"
343 depends on ARCH_SHMOBILE || COMPILE_TEST
344 select GPIOLIB_IRQCHIP
346 Say yes here to support GPIO on Renesas R-Car SoCs.
350 depends on PLAT_SAMSUNG
352 Legacy GPIO support. Use only for platforms without support for
355 config GPIO_SPEAR_SPICS
356 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
357 depends on PLAT_SPEAR
358 select GENERIC_IRQ_CHIP
360 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
363 bool "STA2x11/ConneXt GPIO support"
364 depends on MFD_STA2X11
365 select GENERIC_IRQ_CHIP
367 Say yes here to support the STA2x11/ConneXt GPIO device.
368 The GPIO module has 128 GPIO pins with alternate functions.
371 bool "XWAY STP GPIOs"
374 This enables support for the Serial To Parallel (STP) unit found on
375 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
376 that can be up to 24 bit. This peripheral is aimed at driving leds.
377 Some of the gpios/leds can be auto updated by the soc with dsl and
381 tristate "GPIO based on SYSCON"
382 depends on MFD_SYSCON && OF
384 Say yes here to support GPIO functionality though SYSCON driver.
388 select GENERIC_IRQ_CHIP
392 bool "Toumaz Xenif TZ1090 GPIO support"
393 depends on SOC_TZ1090
394 select GENERIC_IRQ_CHIP
397 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
399 config GPIO_TZ1090_PDC
400 bool "Toumaz Xenif TZ1090 PDC GPIO support"
401 depends on SOC_TZ1090
404 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
408 depends on ARCH_MXC && SOC_VF610
409 select GPIOLIB_IRQCHIP
411 Say yes here to support Vybrid vf610 GPIOs.
414 tristate "NEC VR4100 series General-purpose I/O Uint support"
415 depends on CPU_VR41XX
417 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
420 tristate "VIA VX855/VX875 GPIO"
425 Support access to the VX855/VX875 GPIO lines through the gpio library.
427 This driver provides common support for accessing the device,
428 additional drivers must be enabled in order to use the
429 functionality of the device.
432 bool "APM X-Gene GPIO controller support"
433 depends on ARM64 && OF_GPIO
435 This driver is to support the GPIO block within the APM X-Gene SoC
436 platform's generic flash controller. The GPIO pins are muxed with
437 the generic flash controller's address and data pins. Say yes
438 here to enable the GFC GPIO functionality.
441 tristate "APM X-Gene GPIO standby controller support"
442 depends on ARCH_XGENE && OF_GPIO
445 This driver supports the GPIO block within the APM X-Gene
446 Standby Domain. Say yes here to enable the GPIO functionality.
449 tristate "Xilinx GPIO support"
452 Say yes here to support the Xilinx FPGA GPIO device
455 tristate "Netlogic XLP GPIO support"
456 depends on CPU_XLP && OF_GPIO
457 select GPIOLIB_IRQCHIP
459 This driver provides support for GPIO interface on Netlogic XLP MIPS64
460 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
466 bool "Xtensa GPIO32 support"
468 depends on HAVE_XTENSA_GPIO32
471 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
472 and EXPSTATE (output) ports
475 bool "LSI ZEVIO SoC memory mapped GPIOs"
476 depends on ARM && OF_GPIO
478 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
481 tristate "Xilinx Zynq GPIO support"
482 depends on ARCH_ZYNQ || ARCH_ZYNQMP
483 select GPIOLIB_IRQCHIP
485 Say yes here to support Xilinx Zynq GPIO controller.
488 bool "ZTE ZX GPIO support"
489 select GPIOLIB_IRQCHIP
491 Say yes here to support the GPIO device on ZTE ZX SoCs.
495 menu "Port-mapped I/O GPIO drivers"
496 depends on X86 # Unconditional I/O space access
498 config GPIO_104_IDIO_16
499 tristate "ACCES 104-IDIO-16 GPIO support"
501 Enables GPIO support for the ACCES 104-IDIO-16 family.
504 tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
506 This option enables support for GPIOs found on Fintek Super-I/O
507 chips F71869, F71869A, F71882FG and F71889F.
509 To compile this driver as a module, choose M here: the module will
510 be called f7188x-gpio.
513 tristate "IT87xx GPIO support"
515 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
517 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
518 supports the IT8761E Super I/O chip as well.
520 To compile this driver as a module, choose M here: the module will
524 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
529 Say yes here to support GPIO interface on Intel Poulsbo SCH,
530 Intel Tunnel Creek processor, Intel Centerton processor or
531 Intel Quark X1000 SoC.
533 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
534 powered by the core power rail and are turned off during sleep
535 modes (S3 and higher). The remaining four GPIOs are powered by
536 the Intel SCH suspend power supply. These GPIOs remain
537 active during S3. The suspend powered GPIOs can be used to wake the
538 system from the Suspend-to-RAM state.
540 The Intel Tunnel Creek processor has 5 GPIOs powered by the
541 core power rail and 9 from suspend power supply.
543 The Intel Centerton processor has a total of 30 GPIO pins.
544 Twenty-one are powered by the core power rail and 9 from the
545 suspend power supply.
547 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
548 power well and 6 from the suspend power well.
551 tristate "SMSC SCH311x SuperI/O GPIO"
553 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
554 SCH3116 "Super I/O" chipsets.
556 To compile this driver as a module, choose M here: the module will
557 be called gpio-sch311x.
560 tristate "TS-5500 DIO blocks and compatibles"
561 depends on TS5500 || COMPILE_TEST
563 This driver supports Digital I/O exposed by pin blocks found on some
564 Technologic Systems platforms. It includes, but is not limited to, 3
565 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
570 menu "I2C GPIO expanders"
574 tristate "ADP5588 I2C GPIO expander"
576 This option enables support for 18 GPIOs found
577 on Analog Devices ADP5588 GPIO Expanders.
579 config GPIO_ADP5588_IRQ
580 bool "Interrupt controller support for ADP5588"
581 depends on GPIO_ADP5588=y
583 Say yes here to enable the adp5588 to be used as an interrupt
584 controller. It requires the driver to be built in the kernel.
587 tristate "Avionic Design N-bit GPIO expander"
589 select GPIOLIB_IRQCHIP
591 This option enables support for N GPIOs found on Avionic Design
592 I2C GPIO expanders. The register space will be extended by powers
593 of two, so the controller will need to accommodate for that. For
594 example: if a controller provides 48 pins, 6 registers will be
595 enough to represent all pins, but the driver will assume a
596 register layout for 64 pins (8 registers).
599 tristate "Maxim MAX7300 GPIO expander"
602 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
605 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
607 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
608 Port Expanders. Each IO port on these chips has a fixed role of
609 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
610 Input and Output (designed by 'P'). The combinations are listed
613 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
614 max7322 (4I4O), max7323 (4P4O)
616 16 bits: max7324 (8I8O), max7325 (8P8O),
617 max7326 (4I12O), max7327 (4P12O)
619 Board setup code must specify the model to use, and the start
620 number for these GPIOs.
622 config GPIO_MAX732X_IRQ
623 bool "Interrupt controller support for MAX732x"
624 depends on GPIO_MAX732X=y
625 select GPIOLIB_IRQCHIP
627 Say yes here to enable the max732x to be used as an interrupt
628 controller. It requires the driver to be built in the kernel.
630 config GPIO_MC9S08DZ60
631 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
632 depends on I2C=y && MACH_MX35_3DS
634 Select this to enable the MC9S08DZ60 GPIO driver
637 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
639 Say yes here to provide access to several register-oriented
640 SMBus I/O expanders, made mostly by NXP or TI. Compatible
643 4 bits: pca9536, pca9537
645 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
646 pca9556, pca9557, pca9574, tca6408, xra1202
648 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
653 40 bits: pca9505, pca9698
655 config GPIO_PCA953X_IRQ
656 bool "Interrupt controller support for PCA953x"
657 depends on GPIO_PCA953X=y
658 select GPIOLIB_IRQCHIP
660 Say yes here to enable the pca953x to be used as an interrupt
661 controller. It requires the driver to be built in the kernel.
664 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
665 select GPIOLIB_IRQCHIP
668 Say yes here to provide access to most "quasi-bidirectional" I2C
669 GPIO expanders used for additional digital outputs or inputs.
670 Most of these parts are from NXP, though TI is a second source for
671 some of them. Compatible models include:
673 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
674 pca9670, pca9672, pca9674, pca9674a,
677 16 bits: pcf8575, pcf8575c, pca8575,
678 pca9671, pca9673, pca9675
680 Your board setup code will need to declare the expanders in
681 use, and assign numbers to the GPIOs they expose. Those GPIOs
682 can then be used from drivers and other kernel code, just like
683 other GPIOs, but only accessible from task contexts.
685 This driver provides an in-kernel interface to those GPIOs using
686 platform-neutral GPIO calls.
689 bool "Semtech SX150x I2C GPIO expander"
691 select GPIOLIB_IRQCHIP
694 Say yes here to provide support for Semtech SX150-series I2C
695 GPIO expanders. Compatible models include:
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.
819 tristate "Rockchip RK8XX gpio driver"
822 Select this option to enable the gpio module of Rockchip RK8XX PMIC.
828 select GPIOLIB_IRQCHIP
830 This enables support for the GPIOs found on the STMPE I/O
835 depends on MFD_TC3589X
837 select GPIOLIB_IRQCHIP
839 This enables support for the GPIOs found on the TC3589X
842 config GPIO_TIMBERDALE
843 bool "Support for timberdale GPIO IP"
844 depends on MFD_TIMBERDALE
846 Add support for the GPIO IP in the timberdale FPGA.
850 depends on MFD_TPS6586X
852 Select this option to enable GPIO driver for the TPS6586X
857 depends on MFD_TPS65910
859 Select this option to enable GPIO driver for the TPS65910
863 tristate "TI TPS65912 GPIO"
864 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
866 This driver supports TPS65912 gpio chip
869 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
870 depends on TWL4030_CORE
872 Say yes here to access the GPIO signals of various multi-function
873 power management chips from Texas Instruments.
876 tristate "TWL6040 GPO"
877 depends on TWL6040_CORE
879 Say yes here to access the GPO signals of twl6040
880 audio chip from Texas Instruments.
883 tristate "Philips UCB1400 GPIO"
884 depends on UCB1400_CORE
886 This enables support for the Philips UCB1400 GPIO pins.
887 The UCB1400 is an AC97 audio codec.
890 tristate "WM831x GPIOs"
891 depends on MFD_WM831X
893 Say yes here to access the GPIO signals of WM831x power management
894 chips from Wolfson Microelectronics.
897 tristate "WM8350 GPIOs"
898 depends on MFD_WM8350
900 Say yes here to access the GPIO signals of WM8350 power management
901 chips from Wolfson Microelectronics.
904 tristate "WM8994 GPIOs"
905 depends on MFD_WM8994
907 Say yes here to access the GPIO signals of WM8994 audio hub
908 CODECs from Wolfson Microelectronics.
912 menu "PCI GPIO expanders"
916 tristate "AMD 8111 GPIO driver"
919 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
921 Note, that usually system firmware/ACPI handles GPIO pins on their
922 own and users might easily break their systems with uncarefull usage
928 tristate "BT8XX GPIO abuser"
929 depends on PCI && VIDEO_BT848=n
931 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
932 as a cheap PCI GPIO card.
934 This chip can be found on Miro, Hauppauge and STB TV-cards.
936 The card needs to be physically altered for using it as a
937 GPIO card. For more information on how to build a GPIO card
938 from a BT8xx TV card, see the documentation file at
939 Documentation/bt8xxgpio.txt
943 config GPIO_INTEL_MID
944 bool "Intel Mid GPIO support"
945 depends on PCI && X86
946 select GPIOLIB_IRQCHIP
948 Say Y here to support Intel Mid GPIO.
951 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
953 select GENERIC_IRQ_CHIP
955 ML7213 is companion chip for Intel Atom E6xx series.
956 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
957 Hub) which is for IVI(In-Vehicle Infotainment) use.
958 This driver can access the IOH's GPIO device.
961 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
962 depends on PCI && (X86_32 || COMPILE_TEST)
963 select GENERIC_IRQ_CHIP
965 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
966 which is an IOH(Input/Output Hub) for x86 embedded processor.
967 This driver can access PCH GPIO device.
969 This driver also can be used for LAPIS Semiconductor IOH(Input/
970 Output Hub), ML7223 and ML7831.
971 ML7223 IOH is for MP(Media Phone) use.
972 ML7831 IOH is for general purpose use.
973 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
974 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
977 tristate "RDC R-321x GPIO support"
982 Support for the RDC R321x SoC GPIOs over southbridge
983 PCI configuration space.
985 config GPIO_SODAVILLE
986 bool "Intel Sodaville GPIO support"
987 depends on X86 && PCI && OF
989 select GENERIC_IRQ_CHIP
991 Say Y here to support Intel Sodaville GPIO.
995 menu "SPI GPIO expanders"
996 depends on SPI_MASTER
999 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1002 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1003 shift registers. This driver can be used to provide access
1004 to more gpio outputs.
1007 tristate "Maxim MAX7301 GPIO expander"
1010 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1013 tristate "Freescale MC33880 high-side/low-side switch"
1015 SPI driver for Freescale MC33880 high-side/low-side switch.
1016 This provides GPIO interface supporting inputs and outputs.
1020 menu "SPI or I2C GPIO expanders"
1021 depends on (SPI_MASTER && !I2C) || I2C
1023 config GPIO_MCP23S08
1024 tristate "Microchip MCP23xxx I/O expander"
1026 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1028 This provides a GPIO interface supporting inputs and outputs.
1029 The I2C versions of the chips can be used as interrupt-controller.
1033 menu "USB GPIO expanders"
1036 config GPIO_VIPERBOARD
1037 tristate "Viperboard GPIO a & b support"
1038 depends on MFD_VIPERBOARD && USB
1040 Say yes here to access the GPIO signals of Nano River
1041 Technologies Viperboard. There are two GPIO chips on the
1042 board: gpioa and gpiob.
1043 See viperboard API specification and Nano
1044 River Tech's viperboard.h for detailed meaning
1045 of the module parameters.