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
94 tristate "Dialog DA9052 GPIO"
95 depends on PMIC_DA9052
97 Say yes here to enable the GPIO driver for the DA9052 chip.
100 tristate "Dialog Semiconductor DA9055 GPIO"
101 depends on MFD_DA9055
103 Say yes here to enable the GPIO driver for the DA9055 chip.
105 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
106 be controller by this driver.
108 If driver is built as a module it will be called gpio-da9055.
113 comment "Memory mapped GPIO drivers:"
116 tristate "CLPS711X GPIO support"
117 depends on ARCH_CLPS711X || COMPILE_TEST
120 Say yes here to support GPIO on CLPS711X SoCs.
123 bool "TI Davinci/Keystone GPIO support"
124 default y if ARCH_DAVINCI
125 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
127 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
129 config GPIO_GENERIC_PLATFORM
130 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
133 Say yes here to support basic platform_device memory-mapped GPIO controllers.
136 tristate "Synopsys DesignWare APB GPIO driver"
138 select GENERIC_IRQ_CHIP
141 Say Y or M here to build support for the Synopsys DesignWare APB
145 tristate "IT8761E GPIO support"
146 depends on X86 # unconditional access to IO space.
148 Say yes here to support GPIO functionality of IT8761E super I/O chip.
151 tristate "Emma Mobile GPIO"
152 depends on ARM && OF_GPIO
154 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
158 depends on ARCH_EP93XX
162 bool "LSI ZEVIO SoC memory mapped GPIOs"
163 depends on ARM && OF_GPIO
165 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
167 config GPIO_MM_LANTIQ
168 bool "Lantiq Memory mapped GPIOs"
169 depends on LANTIQ && SOC_XWAY
171 This enables support for memory mapped GPIOs on the External Bus Unit
172 (EBU) found on Lantiq SoCs. The gpios are output only as they are
173 created by attaching a 16bit latch to the bus.
176 tristate "F71882FG and F71889F GPIO support"
179 This option enables support for GPIOs found on Fintek Super-I/O
180 chips F71882FG and F71889F.
182 To compile this driver as a module, choose M here: the module will
183 be called f7188x-gpio.
186 bool "MOXART GPIO support"
187 depends on ARCH_MOXART
189 Select this option to enable GPIO driver for
190 MOXA ART SoC devices.
194 depends on PPC_MPC52xx
197 bool "MPC512x/MPC8xxx GPIO support"
198 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
199 FSL_SOC_BOOKE || PPC_86xx
201 Say Y here if you're going to use hardware that connects to the
202 MPC512x/831x/834x/837x/8572/8610 GPIOs.
205 tristate "Qualcomm MSM GPIO v1"
206 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
208 Say yes here to support the GPIO interface on ARM v6 based
209 Qualcomm MSM chips. Most of the pins on the MSM can be
210 selected for GPIO, and are controlled by this driver.
213 tristate "Qualcomm MSM GPIO v2"
214 depends on GPIOLIB && OF && ARCH_QCOM
216 Say yes here to support the GPIO interface on ARM v7 based
217 Qualcomm MSM chips. Most of the pins on the MSM can be
218 selected for GPIO, and are controlled by this driver.
222 depends on PLAT_ORION
225 select GENERIC_IRQ_CHIP
231 select GENERIC_IRQ_CHIP
237 select GENERIC_IRQ_CHIP
240 tristate "Cavium OCTEON GPIO"
241 depends on GPIOLIB && CAVIUM_OCTEON_SOC
244 Say yes here to support the on-chip GPIO lines on the OCTEON
248 bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
249 default y if ARCH_OMAP
251 select GENERIC_IRQ_CHIP
252 select GPIOLIB_IRQCHIP
254 Say yes here to enable GPIO support for TI OMAP SoCs.
257 bool "PrimeCell PL061 GPIO support"
260 select GPIOLIB_IRQCHIP
262 Say yes here to support the PrimeCell PL061 GPIO device
265 bool "PXA GPIO support"
266 depends on ARCH_PXA || ARCH_MMP
268 Say yes here to support the PXA GPIO device
271 tristate "Renesas R-Car GPIO"
272 depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
274 Say yes here to support GPIO on Renesas R-Car SoCs.
278 depends on PLAT_SAMSUNG
280 Legacy GPIO support. Use only for platforms without support for
284 tristate "SMSC SCH311x SuperI/O GPIO"
286 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
287 SCH3116 "Super I/O" chipsets.
289 To compile this driver as a module, choose M here: the module will
290 be called gpio-sch311x.
292 config GPIO_SPEAR_SPICS
293 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
294 depends on PLAT_SPEAR
295 select GENERIC_IRQ_CHIP
297 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
300 bool "STA2x11/ConneXt GPIO support"
301 depends on MFD_STA2X11
302 select GENERIC_IRQ_CHIP
304 Say yes here to support the STA2x11/ConneXt GPIO device.
305 The GPIO module has 128 GPIO pins with alternate functions.
308 tristate "GPIO based on SYSCON"
309 depends on MFD_SYSCON && OF
311 Say yes here to support GPIO functionality though SYSCON driver.
314 tristate "TS-5500 DIO blocks and compatibles"
315 depends on TS5500 || COMPILE_TEST
317 This driver supports Digital I/O exposed by pin blocks found on some
318 Technologic Systems platforms. It includes, but is not limited to, 3
319 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
323 bool "Toumaz Xenif TZ1090 GPIO support"
324 depends on SOC_TZ1090
325 select GENERIC_IRQ_CHIP
328 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
330 config GPIO_TZ1090_PDC
331 bool "Toumaz Xenif TZ1090 PDC GPIO support"
332 depends on SOC_TZ1090
335 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
338 bool "Xilinx GPIO support"
339 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
341 Say yes here to support the Xilinx FPGA GPIO device
344 bool "Xtensa GPIO32 support"
346 depends on HAVE_XTENSA_GPIO32
349 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
350 and EXPSTATE (output) ports
353 tristate "NEC VR4100 series General-purpose I/O Uint support"
354 depends on CPU_VR41XX
356 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
359 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
360 depends on PCI && X86
364 Say yes here to support GPIO interface on Intel Poulsbo SCH,
365 Intel Tunnel Creek processor or Intel Centerton processor.
366 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
367 powered by the core power rail and are turned off during sleep
368 modes (S3 and higher). The remaining four GPIOs are powered by
369 the Intel SCH suspend power supply. These GPIOs remain
370 active during S3. The suspend powered GPIOs can be used to wake the
371 system from the Suspend-to-RAM state.
372 The Intel Tunnel Creek processor has 5 GPIOs powered by the
373 core power rail and 9 from suspend power supply.
374 The Intel Centerton processor has a total of 30 GPIO pins.
375 Twenty-one are powered by the core power rail and 9 from the
376 suspend power supply.
379 tristate "Intel ICH GPIO"
380 depends on PCI && X86
384 Say yes here to support the GPIO functionality of a number of Intel
385 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
386 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
387 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
392 tristate "Intel IOP GPIO"
393 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
395 Say yes here to support the GPIO functionality of a number of Intel
401 tristate "VIA VX855/VX875 GPIO"
406 Support access to the VX855/VX875 GPIO lines through the gpio library.
408 This driver provides common support for accessing the device,
409 additional drivers must be enabled in order to use the
410 functionality of the device.
413 bool "GE FPGA based GPIO"
416 Support for common GPIO functionality provided on some GE Single Board
419 This driver provides basic support (configure as input or output, read
420 and write pin state) for GPIO implemented in a number of GE single
423 config GPIO_LYNXPOINT
424 tristate "Intel Lynxpoint GPIO support"
425 depends on ACPI && X86
428 driver for GPIO functionality on Intel Lynxpoint PCH chipset
429 Requires ACPI device enumeration code to set up a platform device.
432 tristate "Aeroflex Gaisler GRGPIO support"
437 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
438 VHDL IP core library.
442 select GENERIC_IRQ_CHIP
445 comment "I2C GPIO expanders:"
448 tristate "Wolfson Microelectronics Arizona class devices"
449 depends on MFD_ARIZONA
451 Support for GPIOs on Wolfson Arizona class devices.
454 tristate "TI/National Semiconductor LP3943 GPIO expander"
455 depends on MFD_LP3943
457 GPIO driver for LP3943 MFD.
458 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
459 Open drain outputs are required for this usage.
462 tristate "Maxim MAX7300 GPIO expander"
466 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
469 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
472 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
473 Port Expanders. Each IO port on these chips has a fixed role of
474 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
475 Input and Output (designed by 'P'). The combinations are listed
478 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
479 max7322 (4I4O), max7323 (4P4O)
481 16 bits: max7324 (8I8O), max7325 (8P8O),
482 max7326 (4I12O), max7327 (4P12O)
484 Board setup code must specify the model to use, and the start
485 number for these GPIOs.
487 config GPIO_MAX732X_IRQ
488 bool "Interrupt controller support for MAX732x"
489 depends on GPIO_MAX732X=y
491 Say yes here to enable the max732x to be used as an interrupt
492 controller. It requires the driver to be built in the kernel.
494 config GPIO_MC9S08DZ60
495 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
496 depends on I2C=y && MACH_MX35_3DS
498 Select this to enable the MC9S08DZ60 GPIO driver
501 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
504 Say yes here to provide access to several register-oriented
505 SMBus I/O expanders, made mostly by NXP or TI. Compatible
508 4 bits: pca9536, pca9537
510 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
511 pca9556, pca9557, pca9574, tca6408, xra1202
513 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
518 40 bits: pca9505, pca9698
520 config GPIO_PCA953X_IRQ
521 bool "Interrupt controller support for PCA953x"
522 depends on GPIO_PCA953X=y
523 select GPIOLIB_IRQCHIP
525 Say yes here to enable the pca953x to be used as an interrupt
526 controller. It requires the driver to be built in the kernel.
529 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
533 Say yes here to provide access to most "quasi-bidirectional" I2C
534 GPIO expanders used for additional digital outputs or inputs.
535 Most of these parts are from NXP, though TI is a second source for
536 some of them. Compatible models include:
538 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
539 pca9670, pca9672, pca9674, pca9674a,
542 16 bits: pcf8575, pcf8575c, pca8575,
543 pca9671, pca9673, pca9675
545 Your board setup code will need to declare the expanders in
546 use, and assign numbers to the GPIOs they expose. Those GPIOs
547 can then be used from drivers and other kernel code, just like
548 other GPIOs, but only accessible from task contexts.
550 This driver provides an in-kernel interface to those GPIOs using
551 platform-neutral GPIO calls.
554 bool "RICOH RC5T583 GPIO"
555 depends on MFD_RC5T583
557 Select this option to enable GPIO driver for the Ricoh RC5T583
559 This driver provides the support for driving/reading the gpio pins
560 of RC5T583 device through standard gpio library.
563 bool "Semtech SX150x I2C GPIO expander"
567 Say yes here to provide support for Semtech SX150-series I2C
568 GPIO expanders. Compatible models include:
577 This enables support for the GPIOs found on the STMPE I/O
581 bool "XWAY STP GPIOs"
584 This enables support for the Serial To Parallel (STP) unit found on
585 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
586 that can be up to 24 bit. This peripheral is aimed at driving leds.
587 Some of the gpios/leds can be auto updated by the soc with dsl and
592 depends on MFD_TC3589X
593 select GPIOLIB_IRQCHIP
595 This enables support for the GPIOs found on the TC3589X
599 tristate "TI TPS65912 GPIO"
600 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
602 This driver supports TPS65912 gpio chip
605 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
606 depends on TWL4030_CORE
608 Say yes here to access the GPIO signals of various multi-function
609 power management chips from Texas Instruments.
612 tristate "TWL6040 GPO"
613 depends on TWL6040_CORE
615 Say yes here to access the GPO signals of twl6040
616 audio chip from Texas Instruments.
619 tristate "WM831x GPIOs"
620 depends on MFD_WM831X
622 Say yes here to access the GPIO signals of WM831x power management
623 chips from Wolfson Microelectronics.
626 tristate "WM8350 GPIOs"
627 depends on MFD_WM8350
629 Say yes here to access the GPIO signals of WM8350 power management
630 chips from Wolfson Microelectronics.
633 tristate "WM8994 GPIOs"
634 depends on MFD_WM8994
636 Say yes here to access the GPIO signals of WM8994 audio hub
637 CODECs from Wolfson Microelectronics.
640 tristate "GPIO Support for ADP5520 PMIC"
641 depends on PMIC_ADP5520
643 This option enables support for on-chip GPIO found
644 on Analog Devices ADP5520 PMICs.
647 tristate "ADP5588 I2C GPIO expander"
650 This option enables support for 18 GPIOs found
651 on Analog Devices ADP5588 GPIO Expanders.
653 config GPIO_ADP5588_IRQ
654 bool "Interrupt controller support for ADP5588"
655 depends on GPIO_ADP5588=y
657 Say yes here to enable the adp5588 to be used as an interrupt
658 controller. It requires the driver to be built in the kernel.
661 tristate "Avionic Design N-bit GPIO expander"
662 depends on I2C && OF_GPIO
664 This option enables support for N GPIOs found on Avionic Design
665 I2C GPIO expanders. The register space will be extended by powers
666 of two, so the controller will need to accommodate for that. For
667 example: if a controller provides 48 pins, 6 registers will be
668 enough to represent all pins, but the driver will assume a
669 register layout for 64 pins (8 registers).
671 comment "PCI GPIO expanders:"
674 tristate "AMD CS5535/CS5536 GPIO support"
675 depends on MFD_CS5535
677 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
678 can be used for quite a number of things. The CS5535/6 is found on
679 AMD Geode and Lemote Yeeloong devices.
684 tristate "BT8XX GPIO abuser"
685 depends on PCI && VIDEO_BT848=n
687 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
688 as a cheap PCI GPIO card.
690 This chip can be found on Miro, Hauppauge and STB TV-cards.
692 The card needs to be physically altered for using it as a
693 GPIO card. For more information on how to build a GPIO card
694 from a BT8xx TV card, see the documentation file at
695 Documentation/bt8xxgpio.txt
700 tristate "AMD 8111 GPIO driver"
703 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
705 Note, that usually system firmware/ACPI handles GPIO pins on their
706 own and users might easily break their systems with uncarefull usage
711 config GPIO_INTEL_MID
712 bool "Intel Mid GPIO support"
713 depends on PCI && X86
714 select GPIOLIB_IRQCHIP
716 Say Y here to support Intel Mid GPIO.
719 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
720 depends on PCI && (X86_32 || COMPILE_TEST)
721 select GENERIC_IRQ_CHIP
723 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
724 which is an IOH(Input/Output Hub) for x86 embedded processor.
725 This driver can access PCH GPIO device.
727 This driver also can be used for LAPIS Semiconductor IOH(Input/
728 Output Hub), ML7223 and ML7831.
729 ML7223 IOH is for MP(Media Phone) use.
730 ML7831 IOH is for general purpose use.
731 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
732 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
735 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
737 select GENERIC_IRQ_CHIP
739 ML7213 is companion chip for Intel Atom E6xx series.
740 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
741 Hub) which is for IVI(In-Vehicle Infotainment) use.
742 This driver can access the IOH's GPIO device.
744 config GPIO_SODAVILLE
745 bool "Intel Sodaville GPIO support"
746 depends on X86 && PCI && OF
748 select GENERIC_IRQ_CHIP
750 Say Y here to support Intel Sodaville GPIO.
752 config GPIO_TIMBERDALE
753 bool "Support for timberdale GPIO IP"
754 depends on MFD_TIMBERDALE
756 Add support for the GPIO IP in the timberdale FPGA.
759 tristate "RDC R-321x GPIO support"
764 Support for the RDC R321x SoC GPIOs over southbridge
765 PCI configuration space.
767 comment "SPI GPIO expanders:"
770 tristate "Maxim MAX7301 GPIO expander"
771 depends on SPI_MASTER
774 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
777 tristate "Microchip MCP23xxx I/O expander"
779 depends on (SPI_MASTER && !I2C) || I2C
781 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
783 This provides a GPIO interface supporting inputs and outputs.
784 The I2C versions of the chips can be used as interrupt-controller.
787 tristate "Freescale MC33880 high-side/low-side switch"
788 depends on SPI_MASTER
790 SPI driver for Freescale MC33880 high-side/low-side switch.
791 This provides GPIO interface supporting inputs and outputs.
794 tristate "74x164 serial-in/parallel-out 8-bits shift register"
795 depends on SPI_MASTER && OF
797 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
798 shift registers. This driver can be used to provide access
799 to more gpio outputs.
801 comment "AC97 GPIO expanders:"
804 tristate "Philips UCB1400 GPIO"
805 depends on UCB1400_CORE
807 This enables support for the Philips UCB1400 GPIO pins.
808 The UCB1400 is an AC97 audio codec.
810 comment "LPC GPIO expanders:"
813 tristate "Kontron ETX / COMexpress GPIO"
814 depends on MFD_KEMPLD
816 This enables support for the PLD GPIO interface on some Kontron ETX
817 and COMexpress (ETXexpress) modules.
819 This driver can also be built as a module. If so, the module will be
822 comment "MODULbus GPIO expanders:"
825 tristate "Janz VMOD-TTL Digital IO Module"
826 depends on MFD_JANZ_CMODIO
828 This enables support for the Janz VMOD-TTL Digital IO module.
829 This driver provides support for driving the pins in output
830 mode only. Input mode is not supported.
833 bool "TI PALMAS series PMICs GPIO"
834 depends on MFD_PALMAS
836 Select this option to enable GPIO driver for the TI PALMAS
841 depends on MFD_TPS6586X
843 Select this option to enable GPIO driver for the TPS6586X
848 depends on MFD_TPS65910
850 Select this option to enable GPIO driver for the TPS65910
854 bool "Intel MSIC mixed signal gpio support"
855 depends on MFD_INTEL_MSIC
857 Enable support for GPIO on intel MSIC controllers found in
861 bool "Broadcom Kona GPIO"
864 Turn on GPIO support for Broadcom "Kona" chips.
866 comment "USB GPIO expanders:"
868 config GPIO_VIPERBOARD
869 tristate "Viperboard GPIO a & b support"
870 depends on MFD_VIPERBOARD && USB
872 Say yes here to access the GPIO signals of Nano River
873 Technologies Viperboard. There are two GPIO chips on the
874 board: gpioa and gpiob.
875 See viperboard API specification and Nano
876 River Tech's viperboard.h for detailed meaning
877 of the module parameters.