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
582 select GPIOLIB_IRQCHIP
584 Say yes here to enable the adp5588 to be used as an interrupt
585 controller. It requires the driver to be built in the kernel.
588 tristate "Avionic Design N-bit GPIO expander"
590 select GPIOLIB_IRQCHIP
592 This option enables support for N GPIOs found on Avionic Design
593 I2C GPIO expanders. The register space will be extended by powers
594 of two, so the controller will need to accommodate for that. For
595 example: if a controller provides 48 pins, 6 registers will be
596 enough to represent all pins, but the driver will assume a
597 register layout for 64 pins (8 registers).
600 tristate "Maxim MAX7300 GPIO expander"
603 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
606 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
608 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
609 Port Expanders. Each IO port on these chips has a fixed role of
610 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
611 Input and Output (designed by 'P'). The combinations are listed
614 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
615 max7322 (4I4O), max7323 (4P4O)
617 16 bits: max7324 (8I8O), max7325 (8P8O),
618 max7326 (4I12O), max7327 (4P12O)
620 Board setup code must specify the model to use, and the start
621 number for these GPIOs.
623 config GPIO_MAX732X_IRQ
624 bool "Interrupt controller support for MAX732x"
625 depends on GPIO_MAX732X=y
626 select GPIOLIB_IRQCHIP
628 Say yes here to enable the max732x to be used as an interrupt
629 controller. It requires the driver to be built in the kernel.
631 config GPIO_MC9S08DZ60
632 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
633 depends on I2C=y && MACH_MX35_3DS
635 Select this to enable the MC9S08DZ60 GPIO driver
638 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
640 Say yes here to provide access to several register-oriented
641 SMBus I/O expanders, made mostly by NXP or TI. Compatible
644 4 bits: pca9536, pca9537
646 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
647 pca9556, pca9557, pca9574, tca6408, xra1202
649 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
654 40 bits: pca9505, pca9698
656 config GPIO_PCA953X_IRQ
657 bool "Interrupt controller support for PCA953x"
658 depends on GPIO_PCA953X=y
659 select GPIOLIB_IRQCHIP
661 Say yes here to enable the pca953x to be used as an interrupt
662 controller. It requires the driver to be built in the kernel.
665 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
666 select GPIOLIB_IRQCHIP
669 Say yes here to provide access to most "quasi-bidirectional" I2C
670 GPIO expanders used for additional digital outputs or inputs.
671 Most of these parts are from NXP, though TI is a second source for
672 some of them. Compatible models include:
674 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
675 pca9670, pca9672, pca9674, pca9674a,
678 16 bits: pcf8575, pcf8575c, pca8575,
679 pca9671, pca9673, pca9675
681 Your board setup code will need to declare the expanders in
682 use, and assign numbers to the GPIOs they expose. Those GPIOs
683 can then be used from drivers and other kernel code, just like
684 other GPIOs, but only accessible from task contexts.
686 This driver provides an in-kernel interface to those GPIOs using
687 platform-neutral GPIO calls.
690 bool "Semtech SX150x I2C GPIO expander"
692 select GPIOLIB_IRQCHIP
695 Say yes here to provide support for Semtech SX150-series I2C
696 GPIO expanders. Compatible models include:
703 menu "MFD GPIO expanders"
706 tristate "GPIO Support for ADP5520 PMIC"
707 depends on PMIC_ADP5520
709 This option enables support for on-chip GPIO found
710 on Analog Devices ADP5520 PMICs.
713 tristate "Wolfson Microelectronics Arizona class devices"
714 depends on MFD_ARIZONA
716 Support for GPIOs on Wolfson Arizona class devices.
718 config GPIO_CRYSTAL_COVE
719 tristate "GPIO support for Crystal Cove PMIC"
720 depends on INTEL_SOC_PMIC
721 select GPIOLIB_IRQCHIP
723 Support for GPIO pins on Crystal Cove PMIC.
725 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
728 This driver can also be built as a module. If so, the module will be
729 called gpio-crystalcove.
732 tristate "AMD CS5535/CS5536 GPIO support"
733 depends on MFD_CS5535
735 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
736 can be used for quite a number of things. The CS5535/6 is found on
737 AMD Geode and Lemote Yeeloong devices.
742 tristate "Dialog DA9052 GPIO"
743 depends on PMIC_DA9052
745 Say yes here to enable the GPIO driver for the DA9052 chip.
748 tristate "Dialog Semiconductor DA9055 GPIO"
749 depends on MFD_DA9055
751 Say yes here to enable the GPIO driver for the DA9055 chip.
753 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
754 be controller by this driver.
756 If driver is built as a module it will be called gpio-da9055.
759 tristate "Diolan DLN2 GPIO support"
761 select GPIOLIB_IRQCHIP
764 Select this option to enable GPIO driver for the Diolan DLN2
767 This driver can also be built as a module. If so, the module
768 will be called gpio-dln2.
771 tristate "Janz VMOD-TTL Digital IO Module"
772 depends on MFD_JANZ_CMODIO
774 This enables support for the Janz VMOD-TTL Digital IO module.
775 This driver provides support for driving the pins in output
776 mode only. Input mode is not supported.
779 tristate "Kontron ETX / COMexpress GPIO"
780 depends on MFD_KEMPLD
782 This enables support for the PLD GPIO interface on some Kontron ETX
783 and COMexpress (ETXexpress) modules.
785 This driver can also be built as a module. If so, the module will be
789 tristate "TI/National Semiconductor LP3943 GPIO expander"
790 depends on MFD_LP3943
792 GPIO driver for LP3943 MFD.
793 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
794 Open drain outputs are required for this usage.
797 bool "Intel MSIC mixed signal gpio support"
798 depends on MFD_INTEL_MSIC
800 Enable support for GPIO on intel MSIC controllers found in
804 bool "TI PALMAS series PMICs GPIO"
805 depends on MFD_PALMAS
807 Select this option to enable GPIO driver for the TI PALMAS
811 bool "RICOH RC5T583 GPIO"
812 depends on MFD_RC5T583
814 Select this option to enable GPIO driver for the Ricoh RC5T583
816 This driver provides the support for driving/reading the gpio pins
817 of RC5T583 device through standard gpio library.
823 select GPIOLIB_IRQCHIP
825 This enables support for the GPIOs found on the STMPE I/O
830 depends on MFD_TC3589X
832 select GPIOLIB_IRQCHIP
834 This enables support for the GPIOs found on the TC3589X
837 config GPIO_TIMBERDALE
838 bool "Support for timberdale GPIO IP"
839 depends on MFD_TIMBERDALE
841 Add support for the GPIO IP in the timberdale FPGA.
845 depends on MFD_TPS6586X
847 Select this option to enable GPIO driver for the TPS6586X
852 depends on MFD_TPS65910
854 Select this option to enable GPIO driver for the TPS65910
858 tristate "TI TPS65912 GPIO"
859 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
861 This driver supports TPS65912 gpio chip
864 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
865 depends on TWL4030_CORE
867 Say yes here to access the GPIO signals of various multi-function
868 power management chips from Texas Instruments.
871 tristate "TWL6040 GPO"
872 depends on TWL6040_CORE
874 Say yes here to access the GPO signals of twl6040
875 audio chip from Texas Instruments.
878 tristate "Philips UCB1400 GPIO"
879 depends on UCB1400_CORE
881 This enables support for the Philips UCB1400 GPIO pins.
882 The UCB1400 is an AC97 audio codec.
885 tristate "WM831x GPIOs"
886 depends on MFD_WM831X
888 Say yes here to access the GPIO signals of WM831x power management
889 chips from Wolfson Microelectronics.
892 tristate "WM8350 GPIOs"
893 depends on MFD_WM8350
895 Say yes here to access the GPIO signals of WM8350 power management
896 chips from Wolfson Microelectronics.
899 tristate "WM8994 GPIOs"
900 depends on MFD_WM8994
902 Say yes here to access the GPIO signals of WM8994 audio hub
903 CODECs from Wolfson Microelectronics.
907 menu "PCI GPIO expanders"
911 tristate "AMD 8111 GPIO driver"
914 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
916 Note, that usually system firmware/ACPI handles GPIO pins on their
917 own and users might easily break their systems with uncarefull usage
923 tristate "BT8XX GPIO abuser"
924 depends on PCI && VIDEO_BT848=n
926 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
927 as a cheap PCI GPIO card.
929 This chip can be found on Miro, Hauppauge and STB TV-cards.
931 The card needs to be physically altered for using it as a
932 GPIO card. For more information on how to build a GPIO card
933 from a BT8xx TV card, see the documentation file at
934 Documentation/bt8xxgpio.txt
938 config GPIO_INTEL_MID
939 bool "Intel Mid GPIO support"
940 depends on PCI && X86
941 select GPIOLIB_IRQCHIP
943 Say Y here to support Intel Mid GPIO.
946 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
948 select GENERIC_IRQ_CHIP
950 ML7213 is companion chip for Intel Atom E6xx series.
951 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
952 Hub) which is for IVI(In-Vehicle Infotainment) use.
953 This driver can access the IOH's GPIO device.
956 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
957 depends on PCI && (X86_32 || COMPILE_TEST)
958 select GENERIC_IRQ_CHIP
960 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
961 which is an IOH(Input/Output Hub) for x86 embedded processor.
962 This driver can access PCH GPIO device.
964 This driver also can be used for LAPIS Semiconductor IOH(Input/
965 Output Hub), ML7223 and ML7831.
966 ML7223 IOH is for MP(Media Phone) use.
967 ML7831 IOH is for general purpose use.
968 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
969 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
972 tristate "RDC R-321x GPIO support"
977 Support for the RDC R321x SoC GPIOs over southbridge
978 PCI configuration space.
980 config GPIO_SODAVILLE
981 bool "Intel Sodaville GPIO support"
982 depends on X86 && PCI && OF
984 select GENERIC_IRQ_CHIP
986 Say Y here to support Intel Sodaville GPIO.
990 menu "SPI GPIO expanders"
991 depends on SPI_MASTER
994 tristate "74x164 serial-in/parallel-out 8-bits shift register"
997 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
998 shift registers. This driver can be used to provide access
999 to more gpio outputs.
1002 tristate "Maxim MAX7301 GPIO expander"
1005 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1008 tristate "Freescale MC33880 high-side/low-side switch"
1010 SPI driver for Freescale MC33880 high-side/low-side switch.
1011 This provides GPIO interface supporting inputs and outputs.
1015 menu "SPI or I2C GPIO expanders"
1016 depends on (SPI_MASTER && !I2C) || I2C
1018 config GPIO_MCP23S08
1019 tristate "Microchip MCP23xxx I/O expander"
1021 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1023 This provides a GPIO interface supporting inputs and outputs.
1024 The I2C versions of the chips can be used as interrupt-controller.
1028 menu "USB GPIO expanders"
1031 config GPIO_VIPERBOARD
1032 tristate "Viperboard GPIO a & b support"
1033 depends on MFD_VIPERBOARD && USB
1035 Say yes here to access the GPIO signals of Nano River
1036 Technologies Viperboard. There are two GPIO chips on the
1037 board: gpioa and gpiob.
1038 See viperboard API specification and Nano
1039 River Tech's viperboard.h for detailed meaning
1040 of the module parameters.