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.
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.
52 depends on OF || COMPILE_TEST
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
93 # This symbol is selected by both I2C and SPI expanders
97 menu "Memory mapped GPIO drivers"
100 tristate "GPIO driver for 74xx-ICs with MMIO access"
104 Say yes here to support GPIO functionality for 74xx-compatible ICs
105 with MMIO access. Compatible models include:
106 1 bit: 741G125 (Input), 741G74 (Output)
107 2 bits: 742G125 (Input), 7474 (Output)
108 4 bits: 74125 (Input), 74175 (Output)
109 6 bits: 74365 (Input), 74174 (Output)
110 8 bits: 74244 (Input), 74273 (Output)
111 16 bits: 741624 (Input), 7416374 (Output)
114 tristate "Altera GPIO"
116 select GPIOLIB_IRQCHIP
118 Say Y or M here to build support for the Altera PIO device.
120 If driver is built as a module it will be called gpio-altera.
123 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 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
133 depends on ATH79 || COMPILE_TEST
135 select GPIOLIB_IRQCHIP
137 Select this option to enable GPIO driver for
138 Atheros AR71XX/AR724X/AR913X SoC devices.
141 bool "Broadcom Kona GPIO"
142 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
144 Turn on GPIO support for Broadcom "Kona" chips.
147 tristate "BRCMSTB GPIO support"
148 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
149 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
151 select GPIOLIB_IRQCHIP
153 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
156 tristate "CLPS711X GPIO support"
157 depends on ARCH_CLPS711X || COMPILE_TEST
160 Say yes here to support GPIO on CLPS711X SoCs.
163 bool "TI Davinci/Keystone GPIO support"
164 default y if ARCH_DAVINCI
165 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
167 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
170 tristate "Synopsys DesignWare APB GPIO driver"
172 select GENERIC_IRQ_CHIP
174 Say Y or M here to build support for the Synopsys DesignWare APB
178 tristate "Emma Mobile GPIO"
179 depends on ARM && OF_GPIO
181 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
185 depends on ARCH_EP93XX
189 bool "Axis ETRAX FS General I/O"
190 depends on CRIS || COMPILE_TEST
193 select GPIOLIB_IRQCHIP
195 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
198 bool "GE FPGA based GPIO"
202 Support for common GPIO functionality provided on some GE Single Board
205 This driver provides basic support (configure as input or output, read
206 and write pin state) for GPIO implemented in a number of GE single
209 config GPIO_GENERIC_PLATFORM
210 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
213 Say yes here to support basic platform_device memory-mapped GPIO controllers.
216 tristate "Aeroflex Gaisler GRGPIO support"
221 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
222 VHDL IP core library.
225 tristate "Intel ICH GPIO"
226 depends on PCI && X86
230 Say yes here to support the GPIO functionality of a number of Intel
231 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
232 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
233 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
238 tristate "Intel IOP GPIO"
239 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
241 Say yes here to support the GPIO functionality of a number of Intel
247 bool "Loongson-2/3 GPIO support"
248 depends on CPU_LOONGSON2 || CPU_LOONGSON3
250 driver for GPIO functionality on Loongson-2F/3A/3B processors.
253 bool "NXP LPC18XX/43XX GPIO support"
254 default y if ARCH_LPC18XX
255 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
257 Select this option to enable GPIO driver for
258 NXP LPC18XX/43XX devices.
260 config GPIO_LYNXPOINT
261 tristate "Intel Lynxpoint GPIO support"
262 depends on ACPI && X86
263 select GPIOLIB_IRQCHIP
265 driver for GPIO functionality on Intel Lynxpoint PCH chipset
266 Requires ACPI device enumeration code to set up a platform device.
269 bool "GPIO support for Fujitsu MB86S7x Platforms"
270 depends on ARCH_MB86S7X || COMPILE_TEST
272 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
275 tristate "MEN 16Z127 GPIO support"
279 Say yes here to support the MEN 16Z127 GPIO Controller
281 config GPIO_MM_LANTIQ
282 bool "Lantiq Memory mapped GPIOs"
283 depends on LANTIQ && SOC_XWAY
285 This enables support for memory mapped GPIOs on the External Bus Unit
286 (EBU) found on Lantiq SoCs. The gpios are output only as they are
287 created by attaching a 16bit latch to the bus.
290 bool "MOXART GPIO support"
291 depends on ARCH_MOXART || COMPILE_TEST
294 Select this option to enable GPIO driver for
295 MOXA ART SoC devices.
299 depends on PPC_MPC52xx
302 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
303 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
304 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
309 Say Y here if you're going to use hardware that connects to the
310 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
314 depends on PLAT_ORION
316 select GENERIC_IRQ_CHIP
322 select GENERIC_IRQ_CHIP
328 select GENERIC_IRQ_CHIP
331 tristate "Cavium OCTEON GPIO"
332 depends on GPIOLIB && CAVIUM_OCTEON_SOC
335 Say yes here to support the on-chip GPIO lines on the OCTEON
339 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
340 default y if ARCH_OMAP
342 select GENERIC_IRQ_CHIP
343 select GPIOLIB_IRQCHIP
345 Say yes here to enable GPIO support for TI OMAP SoCs.
348 bool "PrimeCell PL061 GPIO support"
351 select GPIOLIB_IRQCHIP
353 Say yes here to support the PrimeCell PL061 GPIO device
356 bool "PXA GPIO support"
357 depends on ARCH_PXA || ARCH_MMP
359 Say yes here to support the PXA GPIO device
362 tristate "Renesas R-Car GPIO"
363 depends on ARCH_RENESAS || COMPILE_TEST
364 select GPIOLIB_IRQCHIP
366 Say yes here to support GPIO on Renesas R-Car SoCs.
368 config GPIO_SPEAR_SPICS
369 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
370 depends on PLAT_SPEAR
371 select GENERIC_IRQ_CHIP
373 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
376 bool "STA2x11/ConneXt GPIO support"
377 depends on MFD_STA2X11
378 select GENERIC_IRQ_CHIP
380 Say yes here to support the STA2x11/ConneXt GPIO device.
381 The GPIO module has 128 GPIO pins with alternate functions.
384 bool "XWAY STP GPIOs"
387 This enables support for the Serial To Parallel (STP) unit found on
388 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
389 that can be up to 24 bit. This peripheral is aimed at driving leds.
390 Some of the gpios/leds can be auto updated by the soc with dsl and
394 tristate "GPIO based on SYSCON"
395 depends on MFD_SYSCON && OF
397 Say yes here to support GPIO functionality though SYSCON driver.
401 select GENERIC_IRQ_CHIP
407 depends on ARCH_TEGRA || COMPILE_TEST
410 tristate "TS-4800 DIO blocks and compatibles"
412 depends on SOC_IMX51 || COMPILE_TEST
415 This driver support TS-4800 FPGA GPIO controllers.
418 bool "Toumaz Xenif TZ1090 GPIO support"
419 depends on SOC_TZ1090
420 select GENERIC_IRQ_CHIP
423 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
425 config GPIO_TZ1090_PDC
426 bool "Toumaz Xenif TZ1090 PDC GPIO support"
427 depends on SOC_TZ1090
430 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
434 depends on ARCH_MXC && SOC_VF610
435 select GPIOLIB_IRQCHIP
437 Say yes here to support Vybrid vf610 GPIOs.
440 tristate "NEC VR4100 series General-purpose I/O Uint support"
441 depends on CPU_VR41XX
443 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
446 tristate "VIA VX855/VX875 GPIO"
451 Support access to the VX855/VX875 GPIO lines through the gpio library.
453 This driver provides common support for accessing the device,
454 additional drivers must be enabled in order to use the
455 functionality of the device.
458 bool "APM X-Gene GPIO controller support"
459 depends on ARM64 && OF_GPIO
461 This driver is to support the GPIO block within the APM X-Gene SoC
462 platform's generic flash controller. The GPIO pins are muxed with
463 the generic flash controller's address and data pins. Say yes
464 here to enable the GFC GPIO functionality.
467 tristate "APM X-Gene GPIO standby controller support"
468 depends on ARCH_XGENE && OF_GPIO
470 select GPIOLIB_IRQCHIP
472 This driver supports the GPIO block within the APM X-Gene
473 Standby Domain. Say yes here to enable the GPIO functionality.
476 tristate "Xilinx GPIO support"
479 Say yes here to support the Xilinx FPGA GPIO device
482 tristate "Netlogic XLP GPIO support"
483 depends on OF_GPIO && (CPU_XLP || ARCH_VULCAN || COMPILE_TEST)
484 select GPIOLIB_IRQCHIP
486 This driver provides support for GPIO interface on Netlogic XLP MIPS64
487 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
493 bool "Xtensa GPIO32 support"
495 depends on HAVE_XTENSA_GPIO32
498 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
499 and EXPSTATE (output) ports
502 bool "LSI ZEVIO SoC memory mapped GPIOs"
503 depends on ARM && OF_GPIO
505 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
508 tristate "Xilinx Zynq GPIO support"
509 depends on ARCH_ZYNQ || ARCH_ZYNQMP
510 select GPIOLIB_IRQCHIP
512 Say yes here to support Xilinx Zynq GPIO controller.
515 bool "ZTE ZX GPIO support"
516 select GPIOLIB_IRQCHIP
518 Say yes here to support the GPIO device on ZTE ZX SoCs.
520 config GPIO_LOONGSON1
521 tristate "Loongson1 GPIO support"
522 depends on MACH_LOONGSON32
525 Say Y or M here to support GPIO on Loongson1 SoCs.
529 menu "Port-mapped I/O GPIO drivers"
530 depends on X86 # Unconditional I/O space access
532 config GPIO_104_DIO_48E
533 tristate "ACCES 104-DIO-48E GPIO support"
534 depends on ISA_BUS_API
535 select GPIOLIB_IRQCHIP
537 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
538 104-DIO-24E). The base port addresses for the devices may be
539 configured via the base module parameter. The interrupt line numbers
540 for the devices may be configured via the irq module parameter.
542 config GPIO_104_IDIO_16
543 tristate "ACCES 104-IDIO-16 GPIO support"
544 depends on ISA_BUS_API
545 select GPIOLIB_IRQCHIP
547 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
548 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
549 base port addresses for the devices may be configured via the base
550 module parameter. The interrupt line numbers for the devices may be
551 configured via the irq module parameter.
553 config GPIO_104_IDI_48
554 tristate "ACCES 104-IDI-48 GPIO support"
555 depends on ISA_BUS_API
556 select GPIOLIB_IRQCHIP
558 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
559 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
560 the devices may be configured via the base module parameter. The
561 interrupt line numbers for the devices may be configured via the irq
565 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
567 This option enables support for GPIOs found on Fintek Super-I/O
568 chips F71869, F71869A, F71882FG, F71889F and F81866.
570 To compile this driver as a module, choose M here: the module will
571 be called f7188x-gpio.
574 tristate "IT87xx GPIO support"
576 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
578 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
579 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
581 To compile this driver as a module, choose M here: the module will
585 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
590 Say yes here to support GPIO interface on Intel Poulsbo SCH,
591 Intel Tunnel Creek processor, Intel Centerton processor or
592 Intel Quark X1000 SoC.
594 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
595 powered by the core power rail and are turned off during sleep
596 modes (S3 and higher). The remaining four GPIOs are powered by
597 the Intel SCH suspend power supply. These GPIOs remain
598 active during S3. The suspend powered GPIOs can be used to wake the
599 system from the Suspend-to-RAM state.
601 The Intel Tunnel Creek processor has 5 GPIOs powered by the
602 core power rail and 9 from suspend power supply.
604 The Intel Centerton processor has a total of 30 GPIO pins.
605 Twenty-one are powered by the core power rail and 9 from the
606 suspend power supply.
608 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
609 power well and 6 from the suspend power well.
612 tristate "SMSC SCH311x SuperI/O GPIO"
614 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
615 SCH3116 "Super I/O" chipsets.
617 To compile this driver as a module, choose M here: the module will
618 be called gpio-sch311x.
621 tristate "TS-5500 DIO blocks and compatibles"
622 depends on TS5500 || COMPILE_TEST
624 This driver supports Digital I/O exposed by pin blocks found on some
625 Technologic Systems platforms. It includes, but is not limited to, 3
626 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
630 tristate "WinSystems WS16C48 GPIO support"
631 depends on ISA_BUS_API
632 select GPIOLIB_IRQCHIP
634 Enables GPIO support for the WinSystems WS16C48. The base port
635 addresses for the devices may be configured via the base module
636 parameter. The interrupt line numbers for the devices may be
637 configured via the irq module parameter.
641 menu "I2C GPIO expanders"
645 tristate "ADP5588 I2C GPIO expander"
647 This option enables support for 18 GPIOs found
648 on Analog Devices ADP5588 GPIO Expanders.
650 config GPIO_ADP5588_IRQ
651 bool "Interrupt controller support for ADP5588"
652 depends on GPIO_ADP5588=y
654 Say yes here to enable the adp5588 to be used as an interrupt
655 controller. It requires the driver to be built in the kernel.
658 tristate "Avionic Design N-bit GPIO expander"
660 select GPIOLIB_IRQCHIP
662 This option enables support for N GPIOs found on Avionic Design
663 I2C GPIO expanders. The register space will be extended by powers
664 of two, so the controller will need to accommodate for that. For
665 example: if a controller provides 48 pins, 6 registers will be
666 enough to represent all pins, but the driver will assume a
667 register layout for 64 pins (8 registers).
670 tristate "Maxim MAX7300 GPIO expander"
673 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
676 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
678 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
679 Port Expanders. Each IO port on these chips has a fixed role of
680 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
681 Input and Output (designed by 'P'). The combinations are listed
684 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
685 max7322 (4I4O), max7323 (4P4O)
687 16 bits: max7324 (8I8O), max7325 (8P8O),
688 max7326 (4I12O), max7327 (4P12O)
690 Board setup code must specify the model to use, and the start
691 number for these GPIOs.
693 config GPIO_MAX732X_IRQ
694 bool "Interrupt controller support for MAX732x"
695 depends on GPIO_MAX732X=y
696 select GPIOLIB_IRQCHIP
698 Say yes here to enable the max732x to be used as an interrupt
699 controller. It requires the driver to be built in the kernel.
701 config GPIO_MC9S08DZ60
702 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
703 depends on I2C=y && MACH_MX35_3DS
705 Select this to enable the MC9S08DZ60 GPIO driver
708 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
710 Say yes here to provide access to several register-oriented
711 SMBus I/O expanders, made mostly by NXP or TI. Compatible
714 4 bits: pca9536, pca9537
716 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
717 pca9556, pca9557, pca9574, tca6408, xra1202
719 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
724 40 bits: pca9505, pca9698
726 config GPIO_PCA953X_IRQ
727 bool "Interrupt controller support for PCA953x"
728 depends on GPIO_PCA953X=y
729 select GPIOLIB_IRQCHIP
731 Say yes here to enable the pca953x to be used as an interrupt
732 controller. It requires the driver to be built in the kernel.
735 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
736 select GPIOLIB_IRQCHIP
739 Say yes here to provide access to most "quasi-bidirectional" I2C
740 GPIO expanders used for additional digital outputs or inputs.
741 Most of these parts are from NXP, though TI is a second source for
742 some of them. Compatible models include:
744 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
745 pca9670, pca9672, pca9674, pca9674a,
748 16 bits: pcf8575, pcf8575c, pca8575,
749 pca9671, pca9673, pca9675
751 Your board setup code will need to declare the expanders in
752 use, and assign numbers to the GPIOs they expose. Those GPIOs
753 can then be used from drivers and other kernel code, just like
754 other GPIOs, but only accessible from task contexts.
756 This driver provides an in-kernel interface to those GPIOs using
757 platform-neutral GPIO calls.
760 bool "Semtech SX150x I2C GPIO expander"
762 select GPIOLIB_IRQCHIP
765 Say yes here to provide support for Semtech SX150-series I2C
766 GPIO expanders. Compatible models include:
772 tristate "TPIC2810 8-Bit I2C GPO expander"
774 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
776 To compile this driver as a module, choose M here: the module will
777 be called gpio-tpic2810.
781 menu "MFD GPIO expanders"
784 tristate "GPIO Support for ADP5520 PMIC"
785 depends on PMIC_ADP5520
787 This option enables support for on-chip GPIO found
788 on Analog Devices ADP5520 PMICs.
791 tristate "Wolfson Microelectronics Arizona class devices"
792 depends on MFD_ARIZONA
794 Support for GPIOs on Wolfson Arizona class devices.
796 config GPIO_CRYSTAL_COVE
797 tristate "GPIO support for Crystal Cove PMIC"
798 depends on INTEL_SOC_PMIC
799 select GPIOLIB_IRQCHIP
801 Support for GPIO pins on Crystal Cove PMIC.
803 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
806 This driver can also be built as a module. If so, the module will be
807 called gpio-crystalcove.
810 tristate "AMD CS5535/CS5536 GPIO support"
811 depends on MFD_CS5535
813 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
814 can be used for quite a number of things. The CS5535/6 is found on
815 AMD Geode and Lemote Yeeloong devices.
820 tristate "Dialog DA9052 GPIO"
821 depends on PMIC_DA9052
823 Say yes here to enable the GPIO driver for the DA9052 chip.
826 tristate "Dialog Semiconductor DA9055 GPIO"
827 depends on MFD_DA9055
829 Say yes here to enable the GPIO driver for the DA9055 chip.
831 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
832 be controller by this driver.
834 If driver is built as a module it will be called gpio-da9055.
837 tristate "Diolan DLN2 GPIO support"
839 select GPIOLIB_IRQCHIP
842 Select this option to enable GPIO driver for the Diolan DLN2
845 This driver can also be built as a module. If so, the module
846 will be called gpio-dln2.
849 tristate "Janz VMOD-TTL Digital IO Module"
850 depends on MFD_JANZ_CMODIO
852 This enables support for the Janz VMOD-TTL Digital IO module.
853 This driver provides support for driving the pins in output
854 mode only. Input mode is not supported.
857 tristate "Kontron ETX / COMexpress GPIO"
858 depends on MFD_KEMPLD
860 This enables support for the PLD GPIO interface on some Kontron ETX
861 and COMexpress (ETXexpress) modules.
863 This driver can also be built as a module. If so, the module will be
867 tristate "TI/National Semiconductor LP3943 GPIO expander"
868 depends on MFD_LP3943
870 GPIO driver for LP3943 MFD.
871 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
872 Open drain outputs are required for this usage.
875 bool "Intel MSIC mixed signal gpio support"
876 depends on MFD_INTEL_MSIC
878 Enable support for GPIO on intel MSIC controllers found in
882 bool "TI PALMAS series PMICs GPIO"
883 depends on MFD_PALMAS
885 Select this option to enable GPIO driver for the TI PALMAS
889 bool "RICOH RC5T583 GPIO"
890 depends on MFD_RC5T583
892 Select this option to enable GPIO driver for the Ricoh RC5T583
894 This driver provides the support for driving/reading the gpio pins
895 of RC5T583 device through standard gpio library.
901 select GPIOLIB_IRQCHIP
903 This enables support for the GPIOs found on the STMPE I/O
908 depends on MFD_TC3589X
910 select GPIOLIB_IRQCHIP
912 This enables support for the GPIOs found on the TC3589X
915 config GPIO_TIMBERDALE
916 bool "Support for timberdale GPIO IP"
917 depends on MFD_TIMBERDALE
919 Add support for the GPIO IP in the timberdale FPGA.
922 tristate "TI TPS65086 GPO"
923 depends on MFD_TPS65086
925 This driver supports the GPO on TI TPS65086x PMICs.
928 tristate "TPS65218 GPIO"
929 depends on MFD_TPS65218
931 Select this option to enable GPIO driver for the TPS65218
936 depends on MFD_TPS6586X
938 Select this option to enable GPIO driver for the TPS6586X
943 depends on MFD_TPS65910
945 Select this option to enable GPIO driver for the TPS65910
949 tristate "TI TPS65912 GPIO"
950 depends on MFD_TPS65912
952 This driver supports TPS65912 gpio chip
955 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
956 depends on TWL4030_CORE
958 Say yes here to access the GPIO signals of various multi-function
959 power management chips from Texas Instruments.
962 tristate "TWL6040 GPO"
963 depends on TWL6040_CORE
965 Say yes here to access the GPO signals of twl6040
966 audio chip from Texas Instruments.
969 tristate "Philips UCB1400 GPIO"
970 depends on UCB1400_CORE
972 This enables support for the Philips UCB1400 GPIO pins.
973 The UCB1400 is an AC97 audio codec.
976 tristate "WM831x GPIOs"
977 depends on MFD_WM831X
979 Say yes here to access the GPIO signals of WM831x power management
980 chips from Wolfson Microelectronics.
983 tristate "WM8350 GPIOs"
984 depends on MFD_WM8350
986 Say yes here to access the GPIO signals of WM8350 power management
987 chips from Wolfson Microelectronics.
990 tristate "WM8994 GPIOs"
991 depends on MFD_WM8994
993 Say yes here to access the GPIO signals of WM8994 audio hub
994 CODECs from Wolfson Microelectronics.
998 menu "PCI GPIO expanders"
1002 tristate "AMD 8111 GPIO driver"
1004 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1006 Note, that usually system firmware/ACPI handles GPIO pins on their
1007 own and users might easily break their systems with uncarefull usage
1013 tristate "BT8XX GPIO abuser"
1014 depends on VIDEO_BT848=n
1016 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1017 as a cheap PCI GPIO card.
1019 This chip can be found on Miro, Hauppauge and STB TV-cards.
1021 The card needs to be physically altered for using it as a
1022 GPIO card. For more information on how to build a GPIO card
1023 from a BT8xx TV card, see the documentation file at
1024 Documentation/bt8xxgpio.txt
1028 config GPIO_INTEL_MID
1029 bool "Intel Mid GPIO support"
1031 select GPIOLIB_IRQCHIP
1033 Say Y here to support Intel Mid GPIO.
1036 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1037 select GENERIC_IRQ_CHIP
1039 ML7213 is companion chip for Intel Atom E6xx series.
1040 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1041 Hub) which is for IVI(In-Vehicle Infotainment) use.
1042 This driver can access the IOH's GPIO device.
1045 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1046 depends on X86_32 || MIPS || COMPILE_TEST
1047 select GENERIC_IRQ_CHIP
1049 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1050 which is an IOH(Input/Output Hub) for x86 embedded processor.
1051 This driver can access PCH GPIO device.
1053 This driver also can be used for LAPIS Semiconductor IOH(Input/
1054 Output Hub), ML7223 and ML7831.
1055 ML7223 IOH is for MP(Media Phone) use.
1056 ML7831 IOH is for general purpose use.
1057 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1058 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1061 tristate "RDC R-321x GPIO support"
1065 Support for the RDC R321x SoC GPIOs over southbridge
1066 PCI configuration space.
1068 config GPIO_SODAVILLE
1069 bool "Intel Sodaville GPIO support"
1070 depends on X86 && OF
1072 select GENERIC_IRQ_CHIP
1074 Say Y here to support Intel Sodaville GPIO.
1078 menu "SPI GPIO expanders"
1079 depends on SPI_MASTER
1082 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1085 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1086 shift registers. This driver can be used to provide access
1087 to more gpio outputs.
1090 tristate "Maxim MAX7301 GPIO expander"
1093 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1096 tristate "Freescale MC33880 high-side/low-side switch"
1098 SPI driver for Freescale MC33880 high-side/low-side switch.
1099 This provides GPIO interface supporting inputs and outputs.
1102 tristate "Generic parallel-in/serial-out shift register"
1104 GPIO driver for SPI compatible parallel-in/serial-out shift
1105 registers. These are input only devices.
1109 menu "SPI or I2C GPIO expanders"
1110 depends on (SPI_MASTER && !I2C) || I2C
1112 config GPIO_MCP23S08
1113 tristate "Microchip MCP23xxx I/O expander"
1114 select GPIOLIB_IRQCHIP
1116 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1118 This provides a GPIO interface supporting inputs and outputs.
1119 The I2C versions of the chips can be used as interrupt-controller.
1123 menu "USB GPIO expanders"
1126 config GPIO_VIPERBOARD
1127 tristate "Viperboard GPIO a & b support"
1128 depends on MFD_VIPERBOARD
1130 Say yes here to access the GPIO signals of Nano River
1131 Technologies Viperboard. There are two GPIO chips on the
1132 board: gpioa and gpiob.
1133 See viperboard API specification and Nano
1134 River Tech's viperboard.h for detailed meaning
1135 of the module parameters.