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)
465 select IRQ_DOMAIN_HIERARCHY
466 select IRQ_FASTEOI_HIERARCHY_HANDLERS
468 Say yes here to support the on-chip GPIO lines on the ThunderX
469 and OCTEON-TX families of SoCs.
472 bool "Toumaz Xenif TZ1090 GPIO support"
473 depends on SOC_TZ1090
474 select GENERIC_IRQ_CHIP
477 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
479 config GPIO_TZ1090_PDC
480 bool "Toumaz Xenif TZ1090 PDC GPIO support"
481 depends on SOC_TZ1090
484 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
487 tristate "UniPhier GPIO support"
488 depends on ARCH_UNIPHIER || COMPILE_TEST
490 select IRQ_DOMAIN_HIERARCHY
492 Say yes here to support UniPhier GPIOs.
496 depends on ARCH_MXC && SOC_VF610
497 select GPIOLIB_IRQCHIP
499 Say yes here to support Vybrid vf610 GPIOs.
502 tristate "NEC VR4100 series General-purpose I/O Uint support"
503 depends on CPU_VR41XX
505 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
508 tristate "VIA VX855/VX875 GPIO"
509 depends on (X86 || COMPILE_TEST) && PCI
513 Support access to the VX855/VX875 GPIO lines through the gpio library.
515 This driver provides common support for accessing the device,
516 additional drivers must be enabled in order to use the
517 functionality of the device.
520 bool "APM X-Gene GPIO controller support"
521 depends on ARM64 && OF_GPIO
523 This driver is to support the GPIO block within the APM X-Gene SoC
524 platform's generic flash controller. The GPIO pins are muxed with
525 the generic flash controller's address and data pins. Say yes
526 here to enable the GFC GPIO functionality.
529 tristate "APM X-Gene GPIO standby controller support"
530 depends on ARCH_XGENE && OF_GPIO
532 select GPIOLIB_IRQCHIP
533 select IRQ_DOMAIN_HIERARCHY
535 This driver supports the GPIO block within the APM X-Gene
536 Standby Domain. Say yes here to enable the GPIO functionality.
539 tristate "Xilinx GPIO support"
542 Say yes here to support the Xilinx FPGA GPIO device
545 tristate "Netlogic XLP GPIO support"
546 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
547 select GPIOLIB_IRQCHIP
549 This driver provides support for GPIO interface on Netlogic XLP MIPS64
550 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
551 XLP9XX and XLP5XX. The same GPIO controller block is also present in
552 Cavium's ThunderX2 CN99XX SoCs.
557 bool "Xtensa GPIO32 support"
559 depends on HAVE_XTENSA_GPIO32
562 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
563 and EXPSTATE (output) ports
566 bool "LSI ZEVIO SoC memory mapped GPIOs"
567 depends on ARM && OF_GPIO
569 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
572 tristate "Xilinx Zynq GPIO support"
573 depends on ARCH_ZYNQ || ARCH_ZYNQMP
574 select GPIOLIB_IRQCHIP
576 Say yes here to support Xilinx Zynq GPIO controller.
579 bool "ZTE ZX GPIO support"
580 depends on ARCH_ZX || COMPILE_TEST
581 select GPIOLIB_IRQCHIP
583 Say yes here to support the GPIO device on ZTE ZX SoCs.
585 config GPIO_LOONGSON1
586 tristate "Loongson1 GPIO support"
587 depends on MACH_LOONGSON32
590 Say Y or M here to support GPIO on Loongson1 SoCs.
594 menu "Port-mapped I/O GPIO drivers"
595 depends on X86 # Unconditional I/O space access
597 config GPIO_104_DIO_48E
598 tristate "ACCES 104-DIO-48E GPIO support"
599 depends on PC104 && ISA_BUS_API
600 select GPIOLIB_IRQCHIP
602 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
603 104-DIO-24E). The base port addresses for the devices may be
604 configured via the base module parameter. The interrupt line numbers
605 for the devices may be configured via the irq module parameter.
607 config GPIO_104_IDIO_16
608 tristate "ACCES 104-IDIO-16 GPIO support"
609 depends on PC104 && ISA_BUS_API
610 select GPIOLIB_IRQCHIP
612 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
613 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
614 base port addresses for the devices may be configured via the base
615 module parameter. The interrupt line numbers for the devices may be
616 configured via the irq module parameter.
618 config GPIO_104_IDI_48
619 tristate "ACCES 104-IDI-48 GPIO support"
620 depends on PC104 && ISA_BUS_API
621 select GPIOLIB_IRQCHIP
623 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
624 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
625 the devices may be configured via the base module parameter. The
626 interrupt line numbers for the devices may be configured via the irq
630 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
632 This option enables support for GPIOs found on Fintek Super-I/O
633 chips F71869, F71869A, F71882FG, F71889F and F81866.
635 To compile this driver as a module, choose M here: the module will
636 be called f7188x-gpio.
639 tristate "Diamond Systems GPIO-MM GPIO support"
640 depends on PC104 && ISA_BUS_API
642 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
644 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
645 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
646 support for these 48 channels of digital I/O.
648 The base port addresses for the devices may be configured via the base
649 array module parameter.
652 tristate "IT87xx GPIO support"
654 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
656 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
657 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
659 To compile this driver as a module, choose M here: the module will
663 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
664 depends on (X86 || COMPILE_TEST) && PCI
668 Say yes here to support GPIO interface on Intel Poulsbo SCH,
669 Intel Tunnel Creek processor, Intel Centerton processor or
670 Intel Quark X1000 SoC.
672 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
673 powered by the core power rail and are turned off during sleep
674 modes (S3 and higher). The remaining four GPIOs are powered by
675 the Intel SCH suspend power supply. These GPIOs remain
676 active during S3. The suspend powered GPIOs can be used to wake the
677 system from the Suspend-to-RAM state.
679 The Intel Tunnel Creek processor has 5 GPIOs powered by the
680 core power rail and 9 from suspend power supply.
682 The Intel Centerton processor has a total of 30 GPIO pins.
683 Twenty-one are powered by the core power rail and 9 from the
684 suspend power supply.
686 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
687 power well and 6 from the suspend power well.
690 tristate "SMSC SCH311x SuperI/O GPIO"
692 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
693 SCH3116 "Super I/O" chipsets.
695 To compile this driver as a module, choose M here: the module will
696 be called gpio-sch311x.
699 tristate "TS-5500 DIO blocks and compatibles"
700 depends on TS5500 || COMPILE_TEST
702 This driver supports Digital I/O exposed by pin blocks found on some
703 Technologic Systems platforms. It includes, but is not limited to, 3
704 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
708 tristate "WinSystems WS16C48 GPIO support"
709 depends on ISA_BUS_API
710 select GPIOLIB_IRQCHIP
712 Enables GPIO support for the WinSystems WS16C48. The base port
713 addresses for the devices may be configured via the base module
714 parameter. The interrupt line numbers for the devices may be
715 configured via the irq module parameter.
719 menu "I2C GPIO expanders"
723 tristate "ADP5588 I2C GPIO expander"
725 This option enables support for 18 GPIOs found
726 on Analog Devices ADP5588 GPIO Expanders.
728 config GPIO_ADP5588_IRQ
729 bool "Interrupt controller support for ADP5588"
730 depends on GPIO_ADP5588=y
732 Say yes here to enable the adp5588 to be used as an interrupt
733 controller. It requires the driver to be built in the kernel.
736 tristate "Avionic Design N-bit GPIO expander"
738 select GPIOLIB_IRQCHIP
740 This option enables support for N GPIOs found on Avionic Design
741 I2C GPIO expanders. The register space will be extended by powers
742 of two, so the controller will need to accommodate for that. For
743 example: if a controller provides 48 pins, 6 registers will be
744 enough to represent all pins, but the driver will assume a
745 register layout for 64 pins (8 registers).
748 tristate "Maxim MAX7300 GPIO expander"
751 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
754 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
756 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
757 Port Expanders. Each IO port on these chips has a fixed role of
758 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
759 Input and Output (designed by 'P'). The combinations are listed
762 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
763 max7322 (4I4O), max7323 (4P4O)
765 16 bits: max7324 (8I8O), max7325 (8P8O),
766 max7326 (4I12O), max7327 (4P12O)
768 Board setup code must specify the model to use, and the start
769 number for these GPIOs.
771 config GPIO_MAX732X_IRQ
772 bool "Interrupt controller support for MAX732x"
773 depends on GPIO_MAX732X=y
774 select GPIOLIB_IRQCHIP
776 Say yes here to enable the max732x to be used as an interrupt
777 controller. It requires the driver to be built in the kernel.
779 config GPIO_MC9S08DZ60
780 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
781 depends on I2C=y && MACH_MX35_3DS
783 Select this to enable the MC9S08DZ60 GPIO driver
786 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
788 Say yes here to provide access to several register-oriented
789 SMBus I/O expanders, made mostly by NXP or TI. Compatible
792 4 bits: pca9536, pca9537
794 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
795 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
797 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
802 40 bits: pca9505, pca9698
804 config GPIO_PCA953X_IRQ
805 bool "Interrupt controller support for PCA953x"
806 depends on GPIO_PCA953X=y
807 select GPIOLIB_IRQCHIP
809 Say yes here to enable the pca953x to be used as an interrupt
810 controller. It requires the driver to be built in the kernel.
813 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
814 select GPIOLIB_IRQCHIP
817 Say yes here to provide access to most "quasi-bidirectional" I2C
818 GPIO expanders used for additional digital outputs or inputs.
819 Most of these parts are from NXP, though TI is a second source for
820 some of them. Compatible models include:
822 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
823 pca9670, pca9672, pca9674, pca9674a,
826 16 bits: pcf8575, pcf8575c, pca8575,
827 pca9671, pca9673, pca9675
829 Your board setup code will need to declare the expanders in
830 use, and assign numbers to the GPIOs they expose. Those GPIOs
831 can then be used from drivers and other kernel code, just like
832 other GPIOs, but only accessible from task contexts.
834 This driver provides an in-kernel interface to those GPIOs using
835 platform-neutral GPIO calls.
838 bool "Semtech SX150x I2C GPIO expander (deprecated)"
839 depends on PINCTRL && I2C=y
840 select PINCTRL_SX150X
843 Say yes here to provide support for Semtech SX150x-series I2C
844 GPIO expanders. The GPIO driver was replaced by a Pinctrl version.
847 tristate "TPIC2810 8-Bit I2C GPO expander"
849 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
851 To compile this driver as a module, choose M here: the module will
852 be called gpio-tpic2810.
855 tristate "Technologic Systems FPGA I2C GPIO"
856 depends on SOC_IMX6 || COMPILE_TEST
859 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
860 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
864 menu "MFD GPIO expanders"
867 tristate "GPIO Support for ADP5520 PMIC"
868 depends on PMIC_ADP5520
870 This option enables support for on-chip GPIO found
871 on Analog Devices ADP5520 PMICs.
873 config GPIO_ALTERA_A10SR
874 tristate "Altera Arria10 System Resource GPIO"
875 depends on MFD_ALTERA_A10SR
877 Driver for Arria10 Development Kit GPIO expansion which
878 includes reads of pushbuttons and DIP switches as well
882 tristate "Wolfson Microelectronics Arizona class devices"
883 depends on MFD_ARIZONA
885 Support for GPIOs on Wolfson Arizona class devices.
887 config GPIO_BD9571MWV
888 tristate "ROHM BD9571 GPIO support"
889 depends on MFD_BD9571MWV
891 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
892 available on the ROHM PMIC in total, both of which can also
895 This driver can also be built as a module. If so, the module
896 will be called gpio-bd9571mwv.
898 config GPIO_CRYSTAL_COVE
899 tristate "GPIO support for Crystal Cove PMIC"
900 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
901 select GPIOLIB_IRQCHIP
903 Support for GPIO pins on Crystal Cove PMIC.
905 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
908 This driver can also be built as a module. If so, the module will be
909 called gpio-crystalcove.
912 tristate "AMD CS5535/CS5536 GPIO support"
913 depends on X86 || MIPS || COMPILE_TEST
914 depends on MFD_CS5535
916 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
917 can be used for quite a number of things. The CS5535/6 is found on
918 AMD Geode and Lemote Yeeloong devices.
923 tristate "Dialog DA9052 GPIO"
924 depends on PMIC_DA9052
926 Say yes here to enable the GPIO driver for the DA9052 chip.
929 tristate "Dialog Semiconductor DA9055 GPIO"
930 depends on MFD_DA9055
932 Say yes here to enable the GPIO driver for the DA9055 chip.
934 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
935 be controller by this driver.
937 If driver is built as a module it will be called gpio-da9055.
940 tristate "Diolan DLN2 GPIO support"
942 select GPIOLIB_IRQCHIP
945 Select this option to enable GPIO driver for the Diolan DLN2
948 This driver can also be built as a module. If so, the module
949 will be called gpio-dln2.
952 bool "HTC EGPIO support"
953 depends on GPIOLIB && ARM
955 This driver supports the CPLD egpio chip present on
956 several HTC phones. It provides basic support for input
957 pins, output pins, and irqs.
960 tristate "Janz VMOD-TTL Digital IO Module"
961 depends on MFD_JANZ_CMODIO
963 This enables support for the Janz VMOD-TTL Digital IO module.
964 This driver provides support for driving the pins in output
965 mode only. Input mode is not supported.
968 tristate "Kontron ETX / COMexpress GPIO"
969 depends on MFD_KEMPLD
971 This enables support for the PLD GPIO interface on some Kontron ETX
972 and COMexpress (ETXexpress) modules.
974 This driver can also be built as a module. If so, the module will be
978 tristate "TI/National Semiconductor LP3943 GPIO expander"
979 depends on MFD_LP3943
981 GPIO driver for LP3943 MFD.
982 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
983 Open drain outputs are required for this usage.
986 tristate "TI LP873X GPO"
987 depends on MFD_TI_LP873X
989 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
992 This driver can also be built as a module. If so, the module will be
996 tristate "TI LP87565 GPIO"
997 depends on MFD_TI_LP87565
999 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1002 This driver can also be built as a module. If so, the module will be
1003 called gpio-lp87565.
1005 config GPIO_MAX77620
1006 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1007 depends on MFD_MAX77620
1009 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1010 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1011 driver also provides interrupt support for each of the gpios.
1012 Say yes here to enable the max77620 to be used as gpio controller.
1015 bool "Intel MSIC mixed signal gpio support"
1016 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1018 Enable support for GPIO on intel MSIC controllers found in
1022 bool "TI PALMAS series PMICs GPIO"
1023 depends on MFD_PALMAS
1025 Select this option to enable GPIO driver for the TI PALMAS
1029 bool "RICOH RC5T583 GPIO"
1030 depends on MFD_RC5T583
1032 Select this option to enable GPIO driver for the Ricoh RC5T583
1034 This driver provides the support for driving/reading the gpio pins
1035 of RC5T583 device through standard gpio library.
1039 depends on MFD_STMPE
1041 select GPIOLIB_IRQCHIP
1043 This enables support for the GPIOs found on the STMPE I/O
1047 bool "TC3589X GPIOs"
1048 depends on MFD_TC3589X
1050 select GPIOLIB_IRQCHIP
1052 This enables support for the GPIOs found on the TC3589X
1055 config GPIO_TIMBERDALE
1056 bool "Support for timberdale GPIO IP"
1057 depends on MFD_TIMBERDALE
1059 Add support for the GPIO IP in the timberdale FPGA.
1061 config GPIO_TPS65086
1062 tristate "TI TPS65086 GPO"
1063 depends on MFD_TPS65086
1065 This driver supports the GPO on TI TPS65086x PMICs.
1067 config GPIO_TPS65218
1068 tristate "TPS65218 GPIO"
1069 depends on MFD_TPS65218
1071 Select this option to enable GPIO driver for the TPS65218
1074 config GPIO_TPS6586X
1075 bool "TPS6586X GPIO"
1076 depends on MFD_TPS6586X
1078 Select this option to enable GPIO driver for the TPS6586X
1081 config GPIO_TPS65910
1082 bool "TPS65910 GPIO"
1083 depends on MFD_TPS65910
1085 Select this option to enable GPIO driver for the TPS65910
1088 config GPIO_TPS65912
1089 tristate "TI TPS65912 GPIO"
1090 depends on MFD_TPS65912
1092 This driver supports TPS65912 gpio chip
1094 config GPIO_TPS68470
1095 bool "TPS68470 GPIO"
1096 depends on MFD_TPS68470
1098 Select this option to enable GPIO driver for the TPS68470
1100 There are 7 GPIOs and few sensor related GPIOs supported
1101 by the TPS68470. While the 7 GPIOs can be configured as
1102 input or output as appropriate, the sensor related GPIOs
1103 are "output only" GPIOs.
1105 This driver config is bool, as the GPIO functionality
1106 of the TPS68470 must be available before dependent
1110 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1111 depends on TWL4030_CORE
1113 Say yes here to access the GPIO signals of various multi-function
1114 power management chips from Texas Instruments.
1117 tristate "TWL6040 GPO"
1118 depends on TWL6040_CORE
1120 Say yes here to access the GPO signals of twl6040
1121 audio chip from Texas Instruments.
1124 tristate "Philips UCB1400 GPIO"
1125 depends on UCB1400_CORE
1127 This enables support for the Philips UCB1400 GPIO pins.
1128 The UCB1400 is an AC97 audio codec.
1130 config GPIO_WHISKEY_COVE
1131 tristate "GPIO support for Whiskey Cove PMIC"
1132 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1133 select GPIOLIB_IRQCHIP
1135 Support for GPIO pins on Whiskey Cove PMIC.
1137 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1140 This driver can also be built as a module. If so, the module will be
1144 tristate "WM831x GPIOs"
1145 depends on MFD_WM831X
1147 Say yes here to access the GPIO signals of WM831x power management
1148 chips from Wolfson Microelectronics.
1151 tristate "WM8350 GPIOs"
1152 depends on MFD_WM8350
1154 Say yes here to access the GPIO signals of WM8350 power management
1155 chips from Wolfson Microelectronics.
1158 tristate "WM8994 GPIOs"
1159 depends on MFD_WM8994
1161 Say yes here to access the GPIO signals of WM8994 audio hub
1162 CODECs from Wolfson Microelectronics.
1166 menu "PCI GPIO expanders"
1170 tristate "AMD 8111 GPIO driver"
1171 depends on X86 || COMPILE_TEST
1173 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1175 Note, that usually system firmware/ACPI handles GPIO pins on their
1176 own and users might easily break their systems with uncarefull usage
1182 tristate "BT8XX GPIO abuser"
1183 depends on VIDEO_BT848=n
1185 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1186 as a cheap PCI GPIO card.
1188 This chip can be found on Miro, Hauppauge and STB TV-cards.
1190 The card needs to be physically altered for using it as a
1191 GPIO card. For more information on how to build a GPIO card
1192 from a BT8xx TV card, see the documentation file at
1193 Documentation/bt8xxgpio.txt
1197 config GPIO_INTEL_MID
1198 bool "Intel MID GPIO support"
1199 depends on X86_INTEL_MID
1200 select GPIOLIB_IRQCHIP
1202 Say Y here to support Intel MID GPIO.
1204 config GPIO_MERRIFIELD
1205 tristate "Intel Merrifield GPIO support"
1206 depends on X86_INTEL_MID
1207 select GPIOLIB_IRQCHIP
1209 Say Y here to support Intel Merrifield GPIO.
1212 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1213 depends on X86 || COMPILE_TEST
1214 select GENERIC_IRQ_CHIP
1216 ML7213 is companion chip for Intel Atom E6xx series.
1217 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1218 Hub) which is for IVI(In-Vehicle Infotainment) use.
1219 This driver can access the IOH's GPIO device.
1222 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1223 depends on X86_32 || MIPS || COMPILE_TEST
1224 select GENERIC_IRQ_CHIP
1226 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1227 which is an IOH(Input/Output Hub) for x86 embedded processor.
1228 This driver can access PCH GPIO device.
1230 This driver also can be used for LAPIS Semiconductor IOH(Input/
1231 Output Hub), ML7223 and ML7831.
1232 ML7223 IOH is for MP(Media Phone) use.
1233 ML7831 IOH is for general purpose use.
1234 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1235 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1237 config GPIO_PCI_IDIO_16
1238 tristate "ACCES PCI-IDIO-16 GPIO support"
1239 select GPIOLIB_IRQCHIP
1241 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1242 generated when any of the inputs change state (low to high or high to
1243 low). Input filter control is not supported by this driver, and the
1244 input filters are deactivated by this driver.
1247 tristate "RDC R-321x GPIO support"
1251 Support for the RDC R321x SoC GPIOs over southbridge
1252 PCI configuration space.
1254 config GPIO_SODAVILLE
1255 bool "Intel Sodaville GPIO support"
1256 depends on X86 && OF
1258 select GENERIC_IRQ_CHIP
1260 Say Y here to support Intel Sodaville GPIO.
1264 menu "SPI GPIO expanders"
1265 depends on SPI_MASTER
1268 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1271 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1272 shift registers. This driver can be used to provide access
1273 to more gpio outputs.
1275 config GPIO_MAX3191X
1276 tristate "Maxim MAX3191x industrial serializer"
1279 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1280 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1281 chip to make 8 digital 24V inputs available via SPI. Supports
1282 CRC checksums to guard against electromagnetic interference,
1283 as well as undervoltage and overtemperature detection.
1286 tristate "Maxim MAX7301 GPIO expander"
1289 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1292 tristate "Freescale MC33880 high-side/low-side switch"
1294 SPI driver for Freescale MC33880 high-side/low-side switch.
1295 This provides GPIO interface supporting inputs and outputs.
1298 tristate "Generic parallel-in/serial-out shift register"
1300 GPIO driver for SPI compatible parallel-in/serial-out shift
1301 registers. These are input only devices.
1304 tristate "EXAR XRA1403 16-bit GPIO expander"
1307 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1311 menu "USB GPIO expanders"
1314 config GPIO_VIPERBOARD
1315 tristate "Viperboard GPIO a & b support"
1316 depends on MFD_VIPERBOARD
1318 Say yes here to access the GPIO signals of Nano River
1319 Technologies Viperboard. There are two GPIO chips on the
1320 board: gpioa and gpiob.
1321 See viperboard API specification and Nano
1322 River Tech's viperboard.h for detailed meaning
1323 of the module parameters.