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
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
34 config GPIOLIB_IRQCHIP
39 bool "Debug GPIO calls"
40 depends on DEBUG_KERNEL
42 Say Y here to add some extra checks and diagnostics to GPIO calls.
43 These checks help ensure that GPIOs have been properly initialized
44 before they are used, and that sleeping calls are not made from
45 non-sleeping contexts. They can make bitbanged serial protocols
46 slower. The diagnostics help catch the type of setup errors
47 that are most common when setting up new platforms or boards.
50 bool "/sys/class/gpio/... (sysfs interface)"
53 Say Y here to add a sysfs interface for GPIOs.
55 This is mostly useful to work around omissions in a system's
56 kernel support. Those are common in custom and semicustom
57 hardware assembled using standard kernels with a minimum of
58 custom patches. In those cases, userspace code may import
59 a given GPIO from the kernel, if no kernel driver requested it.
61 Kernel drivers may also request that a particular GPIO be
62 exported to userspace; this can be useful when debugging.
65 depends on HAS_IOMEM # Only for IOMEM drivers
68 # put drivers in the right section, in alphabetical order
70 # This symbol is selected by both I2C and SPI expanders
74 menu "Memory mapped GPIO drivers"
78 tristate "GPIO driver for 74xx-ICs with MMIO access"
82 Say yes here to support GPIO functionality for 74xx-compatible ICs
83 with MMIO access. Compatible models include:
84 1 bit: 741G125 (Input), 741G74 (Output)
85 2 bits: 742G125 (Input), 7474 (Output)
86 4 bits: 74125 (Input), 74175 (Output)
87 6 bits: 74365 (Input), 74174 (Output)
88 8 bits: 74244 (Input), 74273 (Output)
89 16 bits: 741624 (Input), 7416374 (Output)
92 tristate "Altera GPIO"
94 select GPIOLIB_IRQCHIP
96 Say Y or M here to build support for the Altera PIO device.
98 If driver is built as a module it will be called gpio-altera.
101 tristate "AMD Promontory GPIO support"
105 driver for GPIO functionality on Promontory IOHub
106 Require ACPI ASL code to enumerate as a platform device.
109 tristate "Aspeed GPIO support"
110 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
111 select GPIOLIB_IRQCHIP
113 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
116 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
118 depends on ATH79 || COMPILE_TEST
120 select GPIOLIB_IRQCHIP
122 Select this option to enable GPIO driver for
123 Atheros AR71XX/AR724X/AR913X SoC devices.
126 tristate "X-Powers AXP209 PMIC GPIO Support"
127 depends on MFD_AXP20X
129 Say yes to enable GPIO support for the AXP209 PMIC
132 bool "Broadcom Kona GPIO"
133 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
135 Turn on GPIO support for Broadcom "Kona" chips.
138 tristate "BRCMSTB GPIO support"
139 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
140 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
144 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
147 tristate "CLPS711X GPIO support"
148 depends on ARCH_CLPS711X || COMPILE_TEST
151 Say yes here to support GPIO on CLPS711X SoCs.
154 bool "TI Davinci/Keystone GPIO support"
155 default y if ARCH_DAVINCI
156 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
158 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
161 tristate "Synopsys DesignWare APB GPIO driver"
163 select GENERIC_IRQ_CHIP
165 Say Y or M here to build support for the Synopsys DesignWare APB
169 tristate "Emma Mobile GPIO"
170 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
172 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
176 depends on ARCH_EP93XX
180 bool "Axis ETRAX FS General I/O"
181 depends on CRIS || COMPILE_TEST
184 select GPIOLIB_IRQCHIP
186 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
189 tristate "Support for GPIO pins on XR17V352/354/358"
190 depends on SERIAL_8250_EXAR
192 Selecting this option will enable handling of GPIO pins present
193 on Exar XR17V352/354/358 chips.
196 bool "GE FPGA based GPIO"
200 Support for common GPIO functionality provided on some GE Single Board
203 This driver provides basic support (configure as input or output, read
204 and write pin state) for GPIO implemented in a number of GE single
207 config GPIO_FTGPIO010
208 bool "Faraday FTGPIO010 GPIO"
211 select GPIOLIB_IRQCHIP
212 default (ARCH_GEMINI || ARCH_MOXART)
214 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
215 Cortina systems Gemini platforms, Moxa ART and others.
217 config GPIO_GENERIC_PLATFORM
218 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
221 Say yes here to support basic platform_device memory-mapped GPIO controllers.
224 tristate "Aeroflex Gaisler GRGPIO support"
229 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
230 VHDL IP core library.
233 tristate "Intel ICH GPIO"
234 depends on PCI && X86
238 Say yes here to support the GPIO functionality of a number of Intel
239 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
240 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
241 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
246 tristate "Ingenic JZ47xx SoCs GPIO support"
248 depends on MACH_INGENIC || COMPILE_TEST
249 select GPIOLIB_IRQCHIP
251 Say yes here to support the GPIO functionality present on the
252 JZ4740 and JZ4780 SoCs from Ingenic.
257 tristate "Intel IOP GPIO"
258 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
261 Say yes here to support the GPIO functionality of a number of Intel
267 bool "Loongson-2/3 GPIO support"
268 depends on CPU_LOONGSON2 || CPU_LOONGSON3
270 driver for GPIO functionality on Loongson-2F/3A/3B processors.
273 tristate "NXP LPC18XX/43XX GPIO support"
274 default y if ARCH_LPC18XX
275 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
277 Select this option to enable GPIO driver for
278 NXP LPC18XX/43XX devices.
280 config GPIO_LYNXPOINT
281 tristate "Intel Lynxpoint GPIO support"
282 depends on ACPI && X86
283 select GPIOLIB_IRQCHIP
285 driver for GPIO functionality on Intel Lynxpoint PCH chipset
286 Requires ACPI device enumeration code to set up a platform device.
289 tristate "GPIO support for Fujitsu MB86S7x Platforms"
291 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
294 tristate "MEN 16Z127 GPIO support"
298 Say yes here to support the MEN 16Z127 GPIO Controller
300 config GPIO_MM_LANTIQ
301 bool "Lantiq Memory mapped GPIOs"
302 depends on LANTIQ && SOC_XWAY
304 This enables support for memory mapped GPIOs on the External Bus Unit
305 (EBU) found on Lantiq SoCs. The gpios are output only as they are
306 created by attaching a 16bit latch to the bus.
309 tristate "GPIO Testing Driver"
310 depends on GPIOLIB && SYSFS
312 select GPIOLIB_IRQCHIP
315 This enables GPIO Testing driver, which provides a way to test GPIO
316 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
317 must be selected for this test.
318 User could use it through the script in
319 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
324 depends on PPC_MPC52xx
327 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
328 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
329 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
334 Say Y here if you're going to use hardware that connects to the
335 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
339 depends on PLAT_ORION || ARCH_MVEBU
341 select GENERIC_IRQ_CHIP
348 select GENERIC_IRQ_CHIP
354 select GENERIC_IRQ_CHIP
357 tristate "Cavium OCTEON GPIO"
358 depends on GPIOLIB && CAVIUM_OCTEON_SOC
361 Say yes here to support the on-chip GPIO lines on the OCTEON
365 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
366 default y if ARCH_OMAP
368 select GENERIC_IRQ_CHIP
369 select GPIOLIB_IRQCHIP
371 Say yes here to enable GPIO support for TI OMAP SoCs.
374 bool "PrimeCell PL061 GPIO support"
377 select GPIOLIB_IRQCHIP
379 Say yes here to support the PrimeCell PL061 GPIO device
382 bool "PXA GPIO support"
383 depends on ARCH_PXA || ARCH_MMP
385 Say yes here to support the PXA GPIO device
388 tristate "Renesas R-Car GPIO"
389 depends on ARCH_RENESAS || COMPILE_TEST
390 select GPIOLIB_IRQCHIP
392 Say yes here to support GPIO on Renesas R-Car SoCs.
397 A 32-bit single register GPIO fixed in/out implementation. This
398 can be used to represent any register as a set of GPIO signals.
400 config GPIO_SPEAR_SPICS
401 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
402 depends on PLAT_SPEAR
403 select GENERIC_IRQ_CHIP
405 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
408 bool "STA2x11/ConneXt GPIO support"
409 depends on MFD_STA2X11
410 select GENERIC_IRQ_CHIP
412 Say yes here to support the STA2x11/ConneXt GPIO device.
413 The GPIO module has 128 GPIO pins with alternate functions.
416 bool "XWAY STP GPIOs"
419 This enables support for the Serial To Parallel (STP) unit found on
420 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
421 that can be up to 24 bit. This peripheral is aimed at driving leds.
422 Some of the gpios/leds can be auto updated by the soc with dsl and
426 tristate "GPIO based on SYSCON"
427 depends on MFD_SYSCON && OF
429 Say yes here to support GPIO functionality though SYSCON driver.
433 select GENERIC_IRQ_CHIP
437 bool "NVIDIA Tegra GPIO support"
439 depends on ARCH_TEGRA || COMPILE_TEST
442 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
445 tristate "NVIDIA Tegra186 GPIO support"
446 default ARCH_TEGRA_186_SOC
447 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
449 select GPIOLIB_IRQCHIP
451 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
454 tristate "TS-4800 DIO blocks and compatibles"
456 depends on SOC_IMX51 || COMPILE_TEST
459 This driver support TS-4800 FPGA GPIO controllers.
462 tristate "Cavium ThunderX/OCTEON-TX GPIO"
463 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
464 depends on PCI_MSI && IRQ_DOMAIN_HIERARCHY
465 select IRQ_FASTEOI_HIERARCHY_HANDLERS
467 Say yes here to support the on-chip GPIO lines on the ThunderX
468 and OCTEON-TX families of SoCs.
471 bool "Toumaz Xenif TZ1090 GPIO support"
472 depends on SOC_TZ1090
473 select GENERIC_IRQ_CHIP
476 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
478 config GPIO_TZ1090_PDC
479 bool "Toumaz Xenif TZ1090 PDC GPIO support"
480 depends on SOC_TZ1090
483 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
486 tristate "UniPhier GPIO support"
487 depends on ARCH_UNIPHIER || COMPILE_TEST
489 select IRQ_DOMAIN_HIERARCHY
491 Say yes here to support UniPhier GPIOs.
495 depends on ARCH_MXC && SOC_VF610
496 select GPIOLIB_IRQCHIP
498 Say yes here to support Vybrid vf610 GPIOs.
501 tristate "NEC VR4100 series General-purpose I/O Uint support"
502 depends on CPU_VR41XX
504 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
507 tristate "VIA VX855/VX875 GPIO"
508 depends on (X86 || COMPILE_TEST) && PCI
512 Support access to the VX855/VX875 GPIO lines through the gpio library.
514 This driver provides common support for accessing the device,
515 additional drivers must be enabled in order to use the
516 functionality of the device.
519 bool "APM X-Gene GPIO controller support"
520 depends on ARM64 && OF_GPIO
522 This driver is to support the GPIO block within the APM X-Gene SoC
523 platform's generic flash controller. The GPIO pins are muxed with
524 the generic flash controller's address and data pins. Say yes
525 here to enable the GFC GPIO functionality.
528 tristate "APM X-Gene GPIO standby controller support"
529 depends on ARCH_XGENE && OF_GPIO
531 select GPIOLIB_IRQCHIP
532 select IRQ_DOMAIN_HIERARCHY
534 This driver supports the GPIO block within the APM X-Gene
535 Standby Domain. Say yes here to enable the GPIO functionality.
538 tristate "Xilinx GPIO support"
541 Say yes here to support the Xilinx FPGA GPIO device
544 tristate "Netlogic XLP GPIO support"
545 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
546 select GPIOLIB_IRQCHIP
548 This driver provides support for GPIO interface on Netlogic XLP MIPS64
549 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
550 XLP9XX and XLP5XX. The same GPIO controller block is also present in
551 Cavium's ThunderX2 CN99XX SoCs.
556 bool "Xtensa GPIO32 support"
558 depends on HAVE_XTENSA_GPIO32
561 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
562 and EXPSTATE (output) ports
565 bool "LSI ZEVIO SoC memory mapped GPIOs"
566 depends on ARM && OF_GPIO
568 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
571 tristate "Xilinx Zynq GPIO support"
572 depends on ARCH_ZYNQ || ARCH_ZYNQMP
573 select GPIOLIB_IRQCHIP
575 Say yes here to support Xilinx Zynq GPIO controller.
578 bool "ZTE ZX GPIO support"
579 depends on ARCH_ZX || COMPILE_TEST
580 select GPIOLIB_IRQCHIP
582 Say yes here to support the GPIO device on ZTE ZX SoCs.
584 config GPIO_LOONGSON1
585 tristate "Loongson1 GPIO support"
586 depends on MACH_LOONGSON32
589 Say Y or M here to support GPIO on Loongson1 SoCs.
593 menu "Port-mapped I/O GPIO drivers"
594 depends on X86 # Unconditional I/O space access
596 config GPIO_104_DIO_48E
597 tristate "ACCES 104-DIO-48E GPIO support"
598 depends on PC104 && ISA_BUS_API
599 select GPIOLIB_IRQCHIP
601 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
602 104-DIO-24E). The base port addresses for the devices may be
603 configured via the base module parameter. The interrupt line numbers
604 for the devices may be configured via the irq module parameter.
606 config GPIO_104_IDIO_16
607 tristate "ACCES 104-IDIO-16 GPIO support"
608 depends on PC104 && ISA_BUS_API
609 select GPIOLIB_IRQCHIP
611 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
612 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
613 base port addresses for the devices may be configured via the base
614 module parameter. The interrupt line numbers for the devices may be
615 configured via the irq module parameter.
617 config GPIO_104_IDI_48
618 tristate "ACCES 104-IDI-48 GPIO support"
619 depends on PC104 && ISA_BUS_API
620 select GPIOLIB_IRQCHIP
622 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
623 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
624 the devices may be configured via the base module parameter. The
625 interrupt line numbers for the devices may be configured via the irq
629 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
631 This option enables support for GPIOs found on Fintek Super-I/O
632 chips F71869, F71869A, F71882FG, F71889F and F81866.
634 To compile this driver as a module, choose M here: the module will
635 be called f7188x-gpio.
638 tristate "Diamond Systems GPIO-MM GPIO support"
639 depends on PC104 && ISA_BUS_API
641 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
643 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
644 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
645 support for these 48 channels of digital I/O.
647 The base port addresses for the devices may be configured via the base
648 array module parameter.
651 tristate "IT87xx GPIO support"
653 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
655 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
656 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
658 To compile this driver as a module, choose M here: the module will
662 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
663 depends on (X86 || COMPILE_TEST) && PCI
667 Say yes here to support GPIO interface on Intel Poulsbo SCH,
668 Intel Tunnel Creek processor, Intel Centerton processor or
669 Intel Quark X1000 SoC.
671 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
672 powered by the core power rail and are turned off during sleep
673 modes (S3 and higher). The remaining four GPIOs are powered by
674 the Intel SCH suspend power supply. These GPIOs remain
675 active during S3. The suspend powered GPIOs can be used to wake the
676 system from the Suspend-to-RAM state.
678 The Intel Tunnel Creek processor has 5 GPIOs powered by the
679 core power rail and 9 from suspend power supply.
681 The Intel Centerton processor has a total of 30 GPIO pins.
682 Twenty-one are powered by the core power rail and 9 from the
683 suspend power supply.
685 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
686 power well and 6 from the suspend power well.
689 tristate "SMSC SCH311x SuperI/O GPIO"
691 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
692 SCH3116 "Super I/O" chipsets.
694 To compile this driver as a module, choose M here: the module will
695 be called gpio-sch311x.
698 tristate "TS-5500 DIO blocks and compatibles"
699 depends on TS5500 || COMPILE_TEST
701 This driver supports Digital I/O exposed by pin blocks found on some
702 Technologic Systems platforms. It includes, but is not limited to, 3
703 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
707 tristate "WinSystems WS16C48 GPIO support"
708 depends on ISA_BUS_API
709 select GPIOLIB_IRQCHIP
711 Enables GPIO support for the WinSystems WS16C48. The base port
712 addresses for the devices may be configured via the base module
713 parameter. The interrupt line numbers for the devices may be
714 configured via the irq module parameter.
718 menu "I2C GPIO expanders"
722 tristate "ADP5588 I2C GPIO expander"
724 This option enables support for 18 GPIOs found
725 on Analog Devices ADP5588 GPIO Expanders.
727 config GPIO_ADP5588_IRQ
728 bool "Interrupt controller support for ADP5588"
729 depends on GPIO_ADP5588=y
731 Say yes here to enable the adp5588 to be used as an interrupt
732 controller. It requires the driver to be built in the kernel.
735 tristate "Avionic Design N-bit GPIO expander"
737 select GPIOLIB_IRQCHIP
739 This option enables support for N GPIOs found on Avionic Design
740 I2C GPIO expanders. The register space will be extended by powers
741 of two, so the controller will need to accommodate for that. For
742 example: if a controller provides 48 pins, 6 registers will be
743 enough to represent all pins, but the driver will assume a
744 register layout for 64 pins (8 registers).
747 tristate "Maxim MAX7300 GPIO expander"
750 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
753 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
755 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
756 Port Expanders. Each IO port on these chips has a fixed role of
757 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
758 Input and Output (designed by 'P'). The combinations are listed
761 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
762 max7322 (4I4O), max7323 (4P4O)
764 16 bits: max7324 (8I8O), max7325 (8P8O),
765 max7326 (4I12O), max7327 (4P12O)
767 Board setup code must specify the model to use, and the start
768 number for these GPIOs.
770 config GPIO_MAX732X_IRQ
771 bool "Interrupt controller support for MAX732x"
772 depends on GPIO_MAX732X=y
773 select GPIOLIB_IRQCHIP
775 Say yes here to enable the max732x to be used as an interrupt
776 controller. It requires the driver to be built in the kernel.
778 config GPIO_MC9S08DZ60
779 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
780 depends on I2C=y && MACH_MX35_3DS
782 Select this to enable the MC9S08DZ60 GPIO driver
785 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
787 Say yes here to provide access to several register-oriented
788 SMBus I/O expanders, made mostly by NXP or TI. Compatible
791 4 bits: pca9536, pca9537
793 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
794 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
796 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
801 40 bits: pca9505, pca9698
803 config GPIO_PCA953X_IRQ
804 bool "Interrupt controller support for PCA953x"
805 depends on GPIO_PCA953X=y
806 select GPIOLIB_IRQCHIP
808 Say yes here to enable the pca953x to be used as an interrupt
809 controller. It requires the driver to be built in the kernel.
812 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
813 select GPIOLIB_IRQCHIP
816 Say yes here to provide access to most "quasi-bidirectional" I2C
817 GPIO expanders used for additional digital outputs or inputs.
818 Most of these parts are from NXP, though TI is a second source for
819 some of them. Compatible models include:
821 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
822 pca9670, pca9672, pca9674, pca9674a,
825 16 bits: pcf8575, pcf8575c, pca8575,
826 pca9671, pca9673, pca9675
828 Your board setup code will need to declare the expanders in
829 use, and assign numbers to the GPIOs they expose. Those GPIOs
830 can then be used from drivers and other kernel code, just like
831 other GPIOs, but only accessible from task contexts.
833 This driver provides an in-kernel interface to those GPIOs using
834 platform-neutral GPIO calls.
837 tristate "TPIC2810 8-Bit I2C GPO expander"
839 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
841 To compile this driver as a module, choose M here: the module will
842 be called gpio-tpic2810.
845 tristate "Technologic Systems FPGA I2C GPIO"
846 depends on SOC_IMX6 || COMPILE_TEST
849 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
850 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
854 menu "MFD GPIO expanders"
857 tristate "GPIO Support for ADP5520 PMIC"
858 depends on PMIC_ADP5520
860 This option enables support for on-chip GPIO found
861 on Analog Devices ADP5520 PMICs.
863 config GPIO_ALTERA_A10SR
864 tristate "Altera Arria10 System Resource GPIO"
865 depends on MFD_ALTERA_A10SR
867 Driver for Arria10 Development Kit GPIO expansion which
868 includes reads of pushbuttons and DIP switches as well
872 tristate "Wolfson Microelectronics Arizona class devices"
873 depends on MFD_ARIZONA
875 Support for GPIOs on Wolfson Arizona class devices.
877 config GPIO_BD9571MWV
878 tristate "ROHM BD9571 GPIO support"
879 depends on MFD_BD9571MWV
881 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
882 available on the ROHM PMIC in total, both of which can also
885 This driver can also be built as a module. If so, the module
886 will be called gpio-bd9571mwv.
888 config GPIO_CRYSTAL_COVE
889 tristate "GPIO support for Crystal Cove PMIC"
890 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
891 select GPIOLIB_IRQCHIP
893 Support for GPIO pins on Crystal Cove PMIC.
895 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
898 This driver can also be built as a module. If so, the module will be
899 called gpio-crystalcove.
902 tristate "AMD CS5535/CS5536 GPIO support"
903 depends on X86 || MIPS || COMPILE_TEST
904 depends on MFD_CS5535
906 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
907 can be used for quite a number of things. The CS5535/6 is found on
908 AMD Geode and Lemote Yeeloong devices.
913 tristate "Dialog DA9052 GPIO"
914 depends on PMIC_DA9052
916 Say yes here to enable the GPIO driver for the DA9052 chip.
919 tristate "Dialog Semiconductor DA9055 GPIO"
920 depends on MFD_DA9055
922 Say yes here to enable the GPIO driver for the DA9055 chip.
924 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
925 be controller by this driver.
927 If driver is built as a module it will be called gpio-da9055.
930 tristate "Diolan DLN2 GPIO support"
932 select GPIOLIB_IRQCHIP
935 Select this option to enable GPIO driver for the Diolan DLN2
938 This driver can also be built as a module. If so, the module
939 will be called gpio-dln2.
942 bool "HTC EGPIO support"
943 depends on GPIOLIB && ARM
945 This driver supports the CPLD egpio chip present on
946 several HTC phones. It provides basic support for input
947 pins, output pins, and irqs.
950 tristate "Janz VMOD-TTL Digital IO Module"
951 depends on MFD_JANZ_CMODIO
953 This enables support for the Janz VMOD-TTL Digital IO module.
954 This driver provides support for driving the pins in output
955 mode only. Input mode is not supported.
958 tristate "Kontron ETX / COMexpress GPIO"
959 depends on MFD_KEMPLD
961 This enables support for the PLD GPIO interface on some Kontron ETX
962 and COMexpress (ETXexpress) modules.
964 This driver can also be built as a module. If so, the module will be
968 tristate "TI/National Semiconductor LP3943 GPIO expander"
969 depends on MFD_LP3943
971 GPIO driver for LP3943 MFD.
972 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
973 Open drain outputs are required for this usage.
976 tristate "TI LP873X GPO"
977 depends on MFD_TI_LP873X
979 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
982 This driver can also be built as a module. If so, the module will be
986 tristate "TI LP87565 GPIO"
987 depends on MFD_TI_LP87565
989 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
992 This driver can also be built as a module. If so, the module will be
996 tristate "GPIO support for PMIC MAX77620 and MAX20024"
997 depends on MFD_MAX77620
999 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1000 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1001 driver also provides interrupt support for each of the gpios.
1002 Say yes here to enable the max77620 to be used as gpio controller.
1005 bool "Intel MSIC mixed signal gpio support"
1006 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1008 Enable support for GPIO on intel MSIC controllers found in
1012 bool "TI PALMAS series PMICs GPIO"
1013 depends on MFD_PALMAS
1015 Select this option to enable GPIO driver for the TI PALMAS
1019 bool "RICOH RC5T583 GPIO"
1020 depends on MFD_RC5T583
1022 Select this option to enable GPIO driver for the Ricoh RC5T583
1024 This driver provides the support for driving/reading the gpio pins
1025 of RC5T583 device through standard gpio library.
1029 depends on MFD_STMPE
1031 select GPIOLIB_IRQCHIP
1033 This enables support for the GPIOs found on the STMPE I/O
1037 bool "TC3589X GPIOs"
1038 depends on MFD_TC3589X
1040 select GPIOLIB_IRQCHIP
1042 This enables support for the GPIOs found on the TC3589X
1045 config GPIO_TIMBERDALE
1046 bool "Support for timberdale GPIO IP"
1047 depends on MFD_TIMBERDALE
1049 Add support for the GPIO IP in the timberdale FPGA.
1051 config GPIO_TPS65086
1052 tristate "TI TPS65086 GPO"
1053 depends on MFD_TPS65086
1055 This driver supports the GPO on TI TPS65086x PMICs.
1057 config GPIO_TPS65218
1058 tristate "TPS65218 GPIO"
1059 depends on MFD_TPS65218
1061 Select this option to enable GPIO driver for the TPS65218
1064 config GPIO_TPS6586X
1065 bool "TPS6586X GPIO"
1066 depends on MFD_TPS6586X
1068 Select this option to enable GPIO driver for the TPS6586X
1071 config GPIO_TPS65910
1072 bool "TPS65910 GPIO"
1073 depends on MFD_TPS65910
1075 Select this option to enable GPIO driver for the TPS65910
1078 config GPIO_TPS65912
1079 tristate "TI TPS65912 GPIO"
1080 depends on MFD_TPS65912
1082 This driver supports TPS65912 gpio chip
1084 config GPIO_TPS68470
1085 bool "TPS68470 GPIO"
1086 depends on MFD_TPS68470
1088 Select this option to enable GPIO driver for the TPS68470
1090 There are 7 GPIOs and few sensor related GPIOs supported
1091 by the TPS68470. While the 7 GPIOs can be configured as
1092 input or output as appropriate, the sensor related GPIOs
1093 are "output only" GPIOs.
1095 This driver config is bool, as the GPIO functionality
1096 of the TPS68470 must be available before dependent
1100 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1101 depends on TWL4030_CORE
1103 Say yes here to access the GPIO signals of various multi-function
1104 power management chips from Texas Instruments.
1107 tristate "TWL6040 GPO"
1108 depends on TWL6040_CORE
1110 Say yes here to access the GPO signals of twl6040
1111 audio chip from Texas Instruments.
1114 tristate "Philips UCB1400 GPIO"
1115 depends on UCB1400_CORE
1117 This enables support for the Philips UCB1400 GPIO pins.
1118 The UCB1400 is an AC97 audio codec.
1120 config GPIO_WHISKEY_COVE
1121 tristate "GPIO support for Whiskey Cove PMIC"
1122 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1123 select GPIOLIB_IRQCHIP
1125 Support for GPIO pins on Whiskey Cove PMIC.
1127 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1130 This driver can also be built as a module. If so, the module will be
1134 tristate "WM831x GPIOs"
1135 depends on MFD_WM831X
1137 Say yes here to access the GPIO signals of WM831x power management
1138 chips from Wolfson Microelectronics.
1141 tristate "WM8350 GPIOs"
1142 depends on MFD_WM8350
1144 Say yes here to access the GPIO signals of WM8350 power management
1145 chips from Wolfson Microelectronics.
1148 tristate "WM8994 GPIOs"
1149 depends on MFD_WM8994
1151 Say yes here to access the GPIO signals of WM8994 audio hub
1152 CODECs from Wolfson Microelectronics.
1156 menu "PCI GPIO expanders"
1160 tristate "AMD 8111 GPIO driver"
1161 depends on X86 || COMPILE_TEST
1163 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1165 Note, that usually system firmware/ACPI handles GPIO pins on their
1166 own and users might easily break their systems with uncarefull usage
1172 tristate "BT8XX GPIO abuser"
1173 depends on VIDEO_BT848=n
1175 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1176 as a cheap PCI GPIO card.
1178 This chip can be found on Miro, Hauppauge and STB TV-cards.
1180 The card needs to be physically altered for using it as a
1181 GPIO card. For more information on how to build a GPIO card
1182 from a BT8xx TV card, see the documentation file at
1183 Documentation/bt8xxgpio.txt
1187 config GPIO_INTEL_MID
1188 bool "Intel MID GPIO support"
1189 depends on X86_INTEL_MID
1190 select GPIOLIB_IRQCHIP
1192 Say Y here to support Intel MID GPIO.
1194 config GPIO_MERRIFIELD
1195 tristate "Intel Merrifield GPIO support"
1196 depends on X86_INTEL_MID
1197 select GPIOLIB_IRQCHIP
1199 Say Y here to support Intel Merrifield GPIO.
1202 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1203 depends on X86 || COMPILE_TEST
1204 select GENERIC_IRQ_CHIP
1206 ML7213 is companion chip for Intel Atom E6xx series.
1207 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1208 Hub) which is for IVI(In-Vehicle Infotainment) use.
1209 This driver can access the IOH's GPIO device.
1212 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1213 depends on X86_32 || MIPS || COMPILE_TEST
1214 select GENERIC_IRQ_CHIP
1216 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1217 which is an IOH(Input/Output Hub) for x86 embedded processor.
1218 This driver can access PCH GPIO device.
1220 This driver also can be used for LAPIS Semiconductor IOH(Input/
1221 Output Hub), ML7223 and ML7831.
1222 ML7223 IOH is for MP(Media Phone) use.
1223 ML7831 IOH is for general purpose use.
1224 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1225 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1227 config GPIO_PCI_IDIO_16
1228 tristate "ACCES PCI-IDIO-16 GPIO support"
1229 select GPIOLIB_IRQCHIP
1231 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1232 generated when any of the inputs change state (low to high or high to
1233 low). Input filter control is not supported by this driver, and the
1234 input filters are deactivated by this driver.
1237 tristate "RDC R-321x GPIO support"
1241 Support for the RDC R321x SoC GPIOs over southbridge
1242 PCI configuration space.
1244 config GPIO_SODAVILLE
1245 bool "Intel Sodaville GPIO support"
1246 depends on X86 && OF
1248 select GENERIC_IRQ_CHIP
1250 Say Y here to support Intel Sodaville GPIO.
1254 menu "SPI GPIO expanders"
1255 depends on SPI_MASTER
1258 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1261 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1262 shift registers. This driver can be used to provide access
1263 to more gpio outputs.
1265 config GPIO_MAX3191X
1266 tristate "Maxim MAX3191x industrial serializer"
1269 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1270 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1271 chip to make 8 digital 24V inputs available via SPI. Supports
1272 CRC checksums to guard against electromagnetic interference,
1273 as well as undervoltage and overtemperature detection.
1276 tristate "Maxim MAX7301 GPIO expander"
1279 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1282 tristate "Freescale MC33880 high-side/low-side switch"
1284 SPI driver for Freescale MC33880 high-side/low-side switch.
1285 This provides GPIO interface supporting inputs and outputs.
1288 tristate "Generic parallel-in/serial-out shift register"
1290 GPIO driver for SPI compatible parallel-in/serial-out shift
1291 registers. These are input only devices.
1294 tristate "EXAR XRA1403 16-bit GPIO expander"
1297 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1301 menu "USB GPIO expanders"
1304 config GPIO_VIPERBOARD
1305 tristate "Viperboard GPIO a & b support"
1306 depends on MFD_VIPERBOARD
1308 Say yes here to access the GPIO signals of Nano River
1309 Technologies Viperboard. There are two GPIO chips on the
1310 board: gpioa and gpiob.
1311 See viperboard API specification and Nano
1312 River Tech's viperboard.h for detailed meaning
1313 of the module parameters.