1 #
2 # GPIO infrastructure and drivers
3 #
5 config ARCH_HAVE_CUSTOM_GPIO_H
6 bool
7 help
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
11 strongly discouraged.
13 menuconfig GPIOLIB
14 bool "GPIO Support"
15 select ANON_INODES
16 help
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.
21 If unsure, say N.
23 if GPIOLIB
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
27 range 32 512
28 default 512
29 help
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
37 config OF_GPIO
38 def_bool y
39 depends on OF
40 depends on HAS_IOMEM
42 config GPIO_ACPI
43 def_bool y
44 depends on ACPI
46 config GPIOLIB_IRQCHIP
47 select IRQ_DOMAIN
48 bool
50 config DEBUG_GPIO
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
53 help
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
61 config GPIO_SYSFS
62 bool "/sys/class/gpio/... (sysfs interface)"
63 depends on SYSFS
64 help
65 Say Y here to add a sysfs interface for GPIOs.
67 This is mostly useful to work around omissions in a system's
68 kernel support. Those are common in custom and semicustom
69 hardware assembled using standard kernels with a minimum of
70 custom patches. In those cases, userspace code may import
71 a given GPIO from the kernel, if no kernel driver requested it.
73 Kernel drivers may also request that a particular GPIO be
74 exported to userspace; this can be useful when debugging.
76 config GPIO_GENERIC
77 depends on HAS_IOMEM # Only for IOMEM drivers
78 tristate
80 # put drivers in the right section, in alphabetical order
82 # This symbol is selected by both I2C and SPI expanders
83 config GPIO_MAX730X
84 tristate
86 menu "Memory mapped GPIO drivers"
87 depends on HAS_IOMEM
89 config GPIO_74XX_MMIO
90 tristate "GPIO driver for 74xx-ICs with MMIO access"
91 depends on OF_GPIO
92 select GPIO_GENERIC
93 help
94 Say yes here to support GPIO functionality for 74xx-compatible ICs
95 with MMIO access. Compatible models include:
96 1 bit: 741G125 (Input), 741G74 (Output)
97 2 bits: 742G125 (Input), 7474 (Output)
98 4 bits: 74125 (Input), 74175 (Output)
99 6 bits: 74365 (Input), 74174 (Output)
100 8 bits: 74244 (Input), 74273 (Output)
101 16 bits: 741624 (Input), 7416374 (Output)
103 config GPIO_ALTERA
104 tristate "Altera GPIO"
105 depends on OF_GPIO
106 select GPIOLIB_IRQCHIP
107 help
108 Say Y or M here to build support for the Altera PIO device.
110 If driver is built as a module it will be called gpio-altera.
112 config GPIO_AMDPT
113 tristate "AMD Promontory GPIO support"
114 depends on ACPI
115 select GPIO_GENERIC
116 help
117 driver for GPIO functionality on Promontory IOHub
118 Require ACPI ASL code to enumerate as a platform device.
120 config GPIO_ASPEED
121 tristate "Aspeed GPIO support"
122 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
123 select GPIOLIB_IRQCHIP
124 help
125 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
127 config GPIO_ATH79
128 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
129 default y if ATH79
130 depends on ATH79 || COMPILE_TEST
131 select GPIO_GENERIC
132 select GPIOLIB_IRQCHIP
133 help
134 Select this option to enable GPIO driver for
135 Atheros AR71XX/AR724X/AR913X SoC devices.
137 config GPIO_RASPBERRYPI_EXP
138 tristate "Raspberry Pi 3 GPIO Expander"
139 default RASPBERRYPI_FIRMWARE
140 depends on OF_GPIO
141 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
142 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
143 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
144 help
145 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
146 the firmware mailbox to communicate with VideoCore on BCM283x chips.
148 config GPIO_BCM_KONA
149 bool "Broadcom Kona GPIO"
150 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
151 help
152 Turn on GPIO support for Broadcom "Kona" chips.
154 config GPIO_BRCMSTB
155 tristate "BRCMSTB GPIO support"
156 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
157 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
158 select GPIO_GENERIC
159 select IRQ_DOMAIN
160 help
161 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
163 config GPIO_CLPS711X
164 tristate "CLPS711X GPIO support"
165 depends on ARCH_CLPS711X || COMPILE_TEST
166 select GPIO_GENERIC
167 help
168 Say yes here to support GPIO on CLPS711X SoCs.
170 config GPIO_DAVINCI
171 bool "TI Davinci/Keystone GPIO support"
172 default y if ARCH_DAVINCI
173 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
174 help
175 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
177 config GPIO_DWAPB
178 tristate "Synopsys DesignWare APB GPIO driver"
179 select GPIO_GENERIC
180 select GENERIC_IRQ_CHIP
181 help
182 Say Y or M here to build support for the Synopsys DesignWare APB
183 GPIO block.
185 config GPIO_EIC_SPRD
186 tristate "Spreadtrum EIC support"
187 depends on ARCH_SPRD || COMPILE_TEST
188 depends on OF_GPIO
189 select GPIOLIB_IRQCHIP
190 help
191 Say yes here to support Spreadtrum EIC device.
193 config GPIO_EM
194 tristate "Emma Mobile GPIO"
195 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
196 help
197 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
199 config GPIO_EP93XX
200 def_bool y
201 depends on ARCH_EP93XX
202 select GPIO_GENERIC
204 config GPIO_EXAR
205 tristate "Support for GPIO pins on XR17V352/354/358"
206 depends on SERIAL_8250_EXAR
207 help
208 Selecting this option will enable handling of GPIO pins present
209 on Exar XR17V352/354/358 chips.
211 config GPIO_GE_FPGA
212 bool "GE FPGA based GPIO"
213 depends on GE_FPGA
214 select GPIO_GENERIC
215 help
216 Support for common GPIO functionality provided on some GE Single Board
217 Computers.
219 This driver provides basic support (configure as input or output, read
220 and write pin state) for GPIO implemented in a number of GE single
221 board computers.
223 config GPIO_FTGPIO010
224 bool "Faraday FTGPIO010 GPIO"
225 depends on OF_GPIO
226 select GPIO_GENERIC
227 select GPIOLIB_IRQCHIP
228 default (ARCH_GEMINI || ARCH_MOXART)
229 help
230 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
231 Cortina systems Gemini platforms, Moxa ART and others.
233 config GPIO_GENERIC_PLATFORM
234 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
235 select GPIO_GENERIC
236 help
237 Say yes here to support basic platform_device memory-mapped GPIO controllers.
239 config GPIO_GRGPIO
240 tristate "Aeroflex Gaisler GRGPIO support"
241 depends on OF_GPIO
242 select GPIO_GENERIC
243 select IRQ_DOMAIN
244 help
245 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
246 VHDL IP core library.
248 config GPIO_HLWD
249 tristate "Nintendo Wii (Hollywood) GPIO"
250 depends on OF_GPIO
251 select GPIO_GENERIC
252 help
253 Select this to support the GPIO controller of the Nintendo Wii.
255 If unsure, say N.
257 config GPIO_ICH
258 tristate "Intel ICH GPIO"
259 depends on PCI && X86
260 select MFD_CORE
261 select LPC_ICH
262 help
263 Say yes here to support the GPIO functionality of a number of Intel
264 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
265 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
266 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
268 If unsure, say N.
270 config GPIO_INGENIC
271 tristate "Ingenic JZ47xx SoCs GPIO support"
272 depends on OF
273 depends on MACH_INGENIC || COMPILE_TEST
274 select GPIOLIB_IRQCHIP
275 help
276 Say yes here to support the GPIO functionality present on the
277 JZ4740 and JZ4780 SoCs from Ingenic.
279 If unsure, say N.
281 config GPIO_IOP
282 tristate "Intel IOP GPIO"
283 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
284 select GPIO_GENERIC
285 help
286 Say yes here to support the GPIO functionality of a number of Intel
287 IOP32X or IOP33X.
289 If unsure, say N.
291 config GPIO_LOONGSON
292 bool "Loongson-2/3 GPIO support"
293 depends on CPU_LOONGSON2 || CPU_LOONGSON3
294 help
295 driver for GPIO functionality on Loongson-2F/3A/3B processors.
297 config GPIO_LPC18XX
298 tristate "NXP LPC18XX/43XX GPIO support"
299 default y if ARCH_LPC18XX
300 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
301 help
302 Select this option to enable GPIO driver for
303 NXP LPC18XX/43XX devices.
305 config GPIO_LYNXPOINT
306 tristate "Intel Lynxpoint GPIO support"
307 depends on ACPI && X86
308 select GPIOLIB_IRQCHIP
309 help
310 driver for GPIO functionality on Intel Lynxpoint PCH chipset
311 Requires ACPI device enumeration code to set up a platform device.
313 config GPIO_MB86S7X
314 tristate "GPIO support for Fujitsu MB86S7x Platforms"
315 help
316 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
318 config GPIO_MENZ127
319 tristate "MEN 16Z127 GPIO support"
320 depends on MCB
321 select GPIO_GENERIC
322 help
323 Say yes here to support the MEN 16Z127 GPIO Controller
325 config GPIO_MM_LANTIQ
326 bool "Lantiq Memory mapped GPIOs"
327 depends on LANTIQ && SOC_XWAY
328 help
329 This enables support for memory mapped GPIOs on the External Bus Unit
330 (EBU) found on Lantiq SoCs. The gpios are output only as they are
331 created by attaching a 16bit latch to the bus.
333 config GPIO_MOCKUP
334 tristate "GPIO Testing Driver"
335 depends on GPIOLIB && SYSFS
336 select GPIO_SYSFS
337 select GPIOLIB_IRQCHIP
338 select IRQ_SIM
339 help
340 This enables GPIO Testing driver, which provides a way to test GPIO
341 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
342 must be selected for this test.
343 User could use it through the script in
344 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
345 it.
347 config GPIO_MPC5200
348 def_bool y
349 depends on PPC_MPC52xx
351 config GPIO_MPC8XXX
352 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
353 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
354 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
355 COMPILE_TEST
356 select GPIO_GENERIC
357 select IRQ_DOMAIN
358 help
359 Say Y here if you're going to use hardware that connects to the
360 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
362 config GPIO_MT7621
363 bool "Mediatek MT7621 GPIO Support"
364 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
365 depends on OF_GPIO
366 select GPIO_GENERIC
367 select GPIOLIB_IRQCHIP
368 help
369 Say yes here to support the Mediatek MT7621 SoC GPIO device
371 config GPIO_MVEBU
372 def_bool y
373 depends on PLAT_ORION || ARCH_MVEBU
374 depends on OF_GPIO
375 select GENERIC_IRQ_CHIP
376 select REGMAP_MMIO
378 config GPIO_MXC
379 def_bool y
380 depends on ARCH_MXC
381 select GPIO_GENERIC
382 select GENERIC_IRQ_CHIP
384 config GPIO_MXS
385 def_bool y
386 depends on ARCH_MXS
387 select GPIO_GENERIC
388 select GENERIC_IRQ_CHIP
390 config GPIO_OCTEON
391 tristate "Cavium OCTEON GPIO"
392 depends on GPIOLIB && CAVIUM_OCTEON_SOC
393 default y
394 help
395 Say yes here to support the on-chip GPIO lines on the OCTEON
396 family of SOCs.
398 config GPIO_OMAP
399 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
400 default y if ARCH_OMAP
401 depends on ARM
402 select GENERIC_IRQ_CHIP
403 select GPIOLIB_IRQCHIP
404 help
405 Say yes here to enable GPIO support for TI OMAP SoCs.
407 config GPIO_PL061
408 bool "PrimeCell PL061 GPIO support"
409 depends on ARM_AMBA
410 select IRQ_DOMAIN
411 select GPIOLIB_IRQCHIP
412 help
413 Say yes here to support the PrimeCell PL061 GPIO device
415 config GPIO_PMIC_EIC_SPRD
416 tristate "Spreadtrum PMIC EIC support"
417 depends on MFD_SC27XX_PMIC || COMPILE_TEST
418 depends on OF_GPIO
419 select GPIOLIB_IRQCHIP
420 help
421 Say yes here to support Spreadtrum PMIC EIC device.
423 config GPIO_PXA
424 bool "PXA GPIO support"
425 depends on ARCH_PXA || ARCH_MMP
426 help
427 Say yes here to support the PXA GPIO device
429 config GPIO_RCAR
430 tristate "Renesas R-Car GPIO"
431 depends on ARCH_RENESAS || COMPILE_TEST
432 select GPIOLIB_IRQCHIP
433 help
434 Say yes here to support GPIO on Renesas R-Car SoCs.
436 config GPIO_REG
437 bool
438 help
439 A 32-bit single register GPIO fixed in/out implementation. This
440 can be used to represent any register as a set of GPIO signals.
442 config GPIO_SPEAR_SPICS
443 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
444 depends on PLAT_SPEAR
445 select GENERIC_IRQ_CHIP
446 help
447 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
449 config GPIO_SPRD
450 tristate "Spreadtrum GPIO support"
451 depends on ARCH_SPRD || COMPILE_TEST
452 depends on OF_GPIO
453 select GPIOLIB_IRQCHIP
454 help
455 Say yes here to support Spreadtrum GPIO device.
457 config GPIO_STA2X11
458 bool "STA2x11/ConneXt GPIO support"
459 depends on MFD_STA2X11
460 select GENERIC_IRQ_CHIP
461 help
462 Say yes here to support the STA2x11/ConneXt GPIO device.
463 The GPIO module has 128 GPIO pins with alternate functions.
465 config GPIO_STP_XWAY
466 bool "XWAY STP GPIOs"
467 depends on SOC_XWAY
468 help
469 This enables support for the Serial To Parallel (STP) unit found on
470 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
471 that can be up to 24 bit. This peripheral is aimed at driving leds.
472 Some of the gpios/leds can be auto updated by the soc with dsl and
473 phy status.
475 config GPIO_SYSCON
476 tristate "GPIO based on SYSCON"
477 depends on MFD_SYSCON && OF
478 help
479 Say yes here to support GPIO functionality though SYSCON driver.
481 config GPIO_TB10X
482 bool
483 select GENERIC_IRQ_CHIP
484 select OF_GPIO
486 config GPIO_TEGRA
487 bool "NVIDIA Tegra GPIO support"
488 default ARCH_TEGRA
489 depends on ARCH_TEGRA || COMPILE_TEST
490 depends on OF_GPIO
491 help
492 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
494 config GPIO_TEGRA186
495 tristate "NVIDIA Tegra186 GPIO support"
496 default ARCH_TEGRA_186_SOC
497 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
498 depends on OF_GPIO
499 select GPIOLIB_IRQCHIP
500 help
501 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
503 config GPIO_TS4800
504 tristate "TS-4800 DIO blocks and compatibles"
505 depends on OF_GPIO
506 depends on SOC_IMX51 || COMPILE_TEST
507 select GPIO_GENERIC
508 help
509 This driver support TS-4800 FPGA GPIO controllers.
511 config GPIO_THUNDERX
512 tristate "Cavium ThunderX/OCTEON-TX GPIO"
513 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
514 depends on PCI_MSI
515 select IRQ_DOMAIN_HIERARCHY
516 select IRQ_FASTEOI_HIERARCHY_HANDLERS
517 help
518 Say yes here to support the on-chip GPIO lines on the ThunderX
519 and OCTEON-TX families of SoCs.
521 config GPIO_UNIPHIER
522 tristate "UniPhier GPIO support"
523 depends on ARCH_UNIPHIER || COMPILE_TEST
524 depends on OF_GPIO
525 select IRQ_DOMAIN_HIERARCHY
526 help
527 Say yes here to support UniPhier GPIOs.
529 config GPIO_VF610
530 def_bool y
531 depends on ARCH_MXC && SOC_VF610
532 select GPIOLIB_IRQCHIP
533 help
534 Say yes here to support Vybrid vf610 GPIOs.
536 config GPIO_VR41XX
537 tristate "NEC VR4100 series General-purpose I/O Uint support"
538 depends on CPU_VR41XX
539 help
540 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
542 config GPIO_VX855
543 tristate "VIA VX855/VX875 GPIO"
544 depends on (X86 || COMPILE_TEST) && PCI
545 select MFD_CORE
546 select MFD_VX855
547 help
548 Support access to the VX855/VX875 GPIO lines through the gpio library.
550 This driver provides common support for accessing the device,
551 additional drivers must be enabled in order to use the
552 functionality of the device.
554 config GPIO_XGENE
555 bool "APM X-Gene GPIO controller support"
556 depends on ARM64 && OF_GPIO
557 help
558 This driver is to support the GPIO block within the APM X-Gene SoC
559 platform's generic flash controller. The GPIO pins are muxed with
560 the generic flash controller's address and data pins. Say yes
561 here to enable the GFC GPIO functionality.
563 config GPIO_XGENE_SB
564 tristate "APM X-Gene GPIO standby controller support"
565 depends on ARCH_XGENE && OF_GPIO
566 select GPIO_GENERIC
567 select GPIOLIB_IRQCHIP
568 select IRQ_DOMAIN_HIERARCHY
569 help
570 This driver supports the GPIO block within the APM X-Gene
571 Standby Domain. Say yes here to enable the GPIO functionality.
573 config GPIO_XILINX
574 tristate "Xilinx GPIO support"
575 depends on OF_GPIO
576 help
577 Say yes here to support the Xilinx FPGA GPIO device
579 config GPIO_XLP
580 tristate "Netlogic XLP GPIO support"
581 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
582 select GPIOLIB_IRQCHIP
583 help
584 This driver provides support for GPIO interface on Netlogic XLP MIPS64
585 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
586 XLP9XX and XLP5XX. The same GPIO controller block is also present in
587 Cavium's ThunderX2 CN99XX SoCs.
589 If unsure, say N.
591 config GPIO_XTENSA
592 bool "Xtensa GPIO32 support"
593 depends on XTENSA
594 depends on HAVE_XTENSA_GPIO32
595 depends on !SMP
596 help
597 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
598 and EXPSTATE (output) ports
600 config GPIO_ZEVIO
601 bool "LSI ZEVIO SoC memory mapped GPIOs"
602 depends on ARM && OF_GPIO
603 help
604 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
606 config GPIO_ZYNQ
607 tristate "Xilinx Zynq GPIO support"
608 depends on ARCH_ZYNQ || ARCH_ZYNQMP
609 select GPIOLIB_IRQCHIP
610 help
611 Say yes here to support Xilinx Zynq GPIO controller.
613 config GPIO_ZX
614 bool "ZTE ZX GPIO support"
615 depends on ARCH_ZX || COMPILE_TEST
616 select GPIOLIB_IRQCHIP
617 help
618 Say yes here to support the GPIO device on ZTE ZX SoCs.
620 config GPIO_LOONGSON1
621 tristate "Loongson1 GPIO support"
622 depends on MACH_LOONGSON32
623 select GPIO_GENERIC
624 help
625 Say Y or M here to support GPIO on Loongson1 SoCs.
627 endmenu
629 menu "Port-mapped I/O GPIO drivers"
630 depends on X86 # Unconditional I/O space access
632 config GPIO_104_DIO_48E
633 tristate "ACCES 104-DIO-48E GPIO support"
634 depends on PC104
635 select ISA_BUS_API
636 select GPIOLIB_IRQCHIP
637 help
638 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
639 104-DIO-24E). The base port addresses for the devices may be
640 configured via the base module parameter. The interrupt line numbers
641 for the devices may be configured via the irq module parameter.
643 config GPIO_104_IDIO_16
644 tristate "ACCES 104-IDIO-16 GPIO support"
645 depends on PC104
646 select ISA_BUS_API
647 select GPIOLIB_IRQCHIP
648 help
649 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
650 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
651 base port addresses for the devices may be configured via the base
652 module parameter. The interrupt line numbers for the devices may be
653 configured via the irq module parameter.
655 config GPIO_104_IDI_48
656 tristate "ACCES 104-IDI-48 GPIO support"
657 depends on PC104
658 select ISA_BUS_API
659 select GPIOLIB_IRQCHIP
660 help
661 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
662 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
663 the devices may be configured via the base module parameter. The
664 interrupt line numbers for the devices may be configured via the irq
665 module parameter.
667 config GPIO_F7188X
668 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
669 help
670 This option enables support for GPIOs found on Fintek Super-I/O
671 chips F71869, F71869A, F71882FG, F71889F and F81866.
673 To compile this driver as a module, choose M here: the module will
674 be called f7188x-gpio.
676 config GPIO_GPIO_MM
677 tristate "Diamond Systems GPIO-MM GPIO support"
678 depends on PC104
679 select ISA_BUS_API
680 help
681 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
683 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
684 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
685 support for these 48 channels of digital I/O.
687 The base port addresses for the devices may be configured via the base
688 array module parameter.
690 config GPIO_IT87
691 tristate "IT87xx GPIO support"
692 help
693 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
695 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
696 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
697 well.
699 To compile this driver as a module, choose M here: the module will
700 be called gpio_it87
702 config GPIO_SCH
703 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
704 depends on (X86 || COMPILE_TEST) && PCI
705 select MFD_CORE
706 select LPC_SCH
707 help
708 Say yes here to support GPIO interface on Intel Poulsbo SCH,
709 Intel Tunnel Creek processor, Intel Centerton processor or
710 Intel Quark X1000 SoC.
712 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
713 powered by the core power rail and are turned off during sleep
714 modes (S3 and higher). The remaining four GPIOs are powered by
715 the Intel SCH suspend power supply. These GPIOs remain
716 active during S3. The suspend powered GPIOs can be used to wake the
717 system from the Suspend-to-RAM state.
719 The Intel Tunnel Creek processor has 5 GPIOs powered by the
720 core power rail and 9 from suspend power supply.
722 The Intel Centerton processor has a total of 30 GPIO pins.
723 Twenty-one are powered by the core power rail and 9 from the
724 suspend power supply.
726 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
727 power well and 6 from the suspend power well.
729 config GPIO_SCH311X
730 tristate "SMSC SCH311x SuperI/O GPIO"
731 help
732 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
733 SCH3116 "Super I/O" chipsets.
735 To compile this driver as a module, choose M here: the module will
736 be called gpio-sch311x.
738 config GPIO_TS5500
739 tristate "TS-5500 DIO blocks and compatibles"
740 depends on TS5500 || COMPILE_TEST
741 help
742 This driver supports Digital I/O exposed by pin blocks found on some
743 Technologic Systems platforms. It includes, but is not limited to, 3
744 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
745 LCD port.
747 config GPIO_WINBOND
748 tristate "Winbond Super I/O GPIO support"
749 select ISA_BUS_API
750 help
751 This option enables support for GPIOs found on Winbond Super I/O
752 chips.
753 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
754 supported.
756 You will need to provide a module parameter "gpios", or a
757 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
758 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
760 To compile this driver as a module, choose M here: the module will
761 be called gpio-winbond.
763 config GPIO_WS16C48
764 tristate "WinSystems WS16C48 GPIO support"
765 select ISA_BUS_API
766 select GPIOLIB_IRQCHIP
767 help
768 Enables GPIO support for the WinSystems WS16C48. The base port
769 addresses for the devices may be configured via the base module
770 parameter. The interrupt line numbers for the devices may be
771 configured via the irq module parameter.
773 endmenu
775 menu "I2C GPIO expanders"
776 depends on I2C
778 config GPIO_ADP5588
779 tristate "ADP5588 I2C GPIO expander"
780 help
781 This option enables support for 18 GPIOs found
782 on Analog Devices ADP5588 GPIO Expanders.
784 config GPIO_ADP5588_IRQ
785 bool "Interrupt controller support for ADP5588"
786 depends on GPIO_ADP5588=y
787 help
788 Say yes here to enable the adp5588 to be used as an interrupt
789 controller. It requires the driver to be built in the kernel.
791 config GPIO_ADNP
792 tristate "Avionic Design N-bit GPIO expander"
793 depends on OF_GPIO
794 select GPIOLIB_IRQCHIP
795 help
796 This option enables support for N GPIOs found on Avionic Design
797 I2C GPIO expanders. The register space will be extended by powers
798 of two, so the controller will need to accommodate for that. For
799 example: if a controller provides 48 pins, 6 registers will be
800 enough to represent all pins, but the driver will assume a
801 register layout for 64 pins (8 registers).
803 config GPIO_MAX7300
804 tristate "Maxim MAX7300 GPIO expander"
805 select GPIO_MAX730X
806 help
807 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
809 config GPIO_MAX732X
810 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
811 help
812 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
813 Port Expanders. Each IO port on these chips has a fixed role of
814 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
815 Input and Output (designed by 'P'). The combinations are listed
816 below:
818 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
819 max7322 (4I4O), max7323 (4P4O)
821 16 bits: max7324 (8I8O), max7325 (8P8O),
822 max7326 (4I12O), max7327 (4P12O)
824 Board setup code must specify the model to use, and the start
825 number for these GPIOs.
827 config GPIO_MAX732X_IRQ
828 bool "Interrupt controller support for MAX732x"
829 depends on GPIO_MAX732X=y
830 select GPIOLIB_IRQCHIP
831 help
832 Say yes here to enable the max732x to be used as an interrupt
833 controller. It requires the driver to be built in the kernel.
835 config GPIO_MC9S08DZ60
836 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
837 depends on I2C=y && MACH_MX35_3DS
838 help
839 Select this to enable the MC9S08DZ60 GPIO driver
841 config GPIO_PCA953X
842 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
843 help
844 Say yes here to provide access to several register-oriented
845 SMBus I/O expanders, made mostly by NXP or TI. Compatible
846 models include:
848 4 bits: pca9536, pca9537
850 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
851 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
853 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
854 tca6416
856 24 bits: tca6424
858 40 bits: pca9505, pca9698
860 config GPIO_PCA953X_IRQ
861 bool "Interrupt controller support for PCA953x"
862 depends on GPIO_PCA953X=y
863 select GPIOLIB_IRQCHIP
864 help
865 Say yes here to enable the pca953x to be used as an interrupt
866 controller. It requires the driver to be built in the kernel.
868 config GPIO_PCF857X
869 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
870 select GPIOLIB_IRQCHIP
871 select IRQ_DOMAIN
872 help
873 Say yes here to provide access to most "quasi-bidirectional" I2C
874 GPIO expanders used for additional digital outputs or inputs.
875 Most of these parts are from NXP, though TI is a second source for
876 some of them. Compatible models include:
878 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
879 pca9670, pca9672, pca9674, pca9674a,
880 max7328, max7329
882 16 bits: pcf8575, pcf8575c, pca8575,
883 pca9671, pca9673, pca9675
885 Your board setup code will need to declare the expanders in
886 use, and assign numbers to the GPIOs they expose. Those GPIOs
887 can then be used from drivers and other kernel code, just like
888 other GPIOs, but only accessible from task contexts.
890 This driver provides an in-kernel interface to those GPIOs using
891 platform-neutral GPIO calls.
893 config GPIO_TPIC2810
894 tristate "TPIC2810 8-Bit I2C GPO expander"
895 help
896 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
898 To compile this driver as a module, choose M here: the module will
899 be called gpio-tpic2810.
901 config GPIO_TS4900
902 tristate "Technologic Systems FPGA I2C GPIO"
903 depends on SOC_IMX6 || COMPILE_TEST
904 select REGMAP_I2C
905 help
906 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
907 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
909 endmenu
911 menu "MFD GPIO expanders"
913 config GPIO_ADP5520
914 tristate "GPIO Support for ADP5520 PMIC"
915 depends on PMIC_ADP5520
916 help
917 This option enables support for on-chip GPIO found
918 on Analog Devices ADP5520 PMICs.
920 config GPIO_ALTERA_A10SR
921 tristate "Altera Arria10 System Resource GPIO"
922 depends on MFD_ALTERA_A10SR
923 help
924 Driver for Arria10 Development Kit GPIO expansion which
925 includes reads of pushbuttons and DIP switches as well
926 as writes to LEDs.
928 config GPIO_ARIZONA
929 tristate "Wolfson Microelectronics Arizona class devices"
930 depends on MFD_ARIZONA
931 help
932 Support for GPIOs on Wolfson Arizona class devices.
934 config GPIO_BD9571MWV
935 tristate "ROHM BD9571 GPIO support"
936 depends on MFD_BD9571MWV
937 help
938 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
939 available on the ROHM PMIC in total, both of which can also
940 generate interrupts.
942 This driver can also be built as a module. If so, the module
943 will be called gpio-bd9571mwv.
945 config GPIO_CRYSTAL_COVE
946 tristate "GPIO support for Crystal Cove PMIC"
947 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
948 select GPIOLIB_IRQCHIP
949 help
950 Support for GPIO pins on Crystal Cove PMIC.
952 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
953 inside.
955 This driver can also be built as a module. If so, the module will be
956 called gpio-crystalcove.
958 config GPIO_CS5535
959 tristate "AMD CS5535/CS5536 GPIO support"
960 depends on X86 || MIPS || COMPILE_TEST
961 depends on MFD_CS5535
962 help
963 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
964 can be used for quite a number of things. The CS5535/6 is found on
965 AMD Geode and Lemote Yeeloong devices.
967 If unsure, say N.
969 config GPIO_DA9052
970 tristate "Dialog DA9052 GPIO"
971 depends on PMIC_DA9052
972 help
973 Say yes here to enable the GPIO driver for the DA9052 chip.
975 config GPIO_DA9055
976 tristate "Dialog Semiconductor DA9055 GPIO"
977 depends on MFD_DA9055
978 help
979 Say yes here to enable the GPIO driver for the DA9055 chip.
981 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
982 be controller by this driver.
984 If driver is built as a module it will be called gpio-da9055.
986 config GPIO_DLN2
987 tristate "Diolan DLN2 GPIO support"
988 depends on MFD_DLN2
989 select GPIOLIB_IRQCHIP
991 help
992 Select this option to enable GPIO driver for the Diolan DLN2
993 board.
995 This driver can also be built as a module. If so, the module
996 will be called gpio-dln2.
998 config HTC_EGPIO
999 bool "HTC EGPIO support"
1000 depends on GPIOLIB && ARM
1001 help
1002 This driver supports the CPLD egpio chip present on
1003 several HTC phones. It provides basic support for input
1004 pins, output pins, and irqs.
1006 config GPIO_JANZ_TTL
1007 tristate "Janz VMOD-TTL Digital IO Module"
1008 depends on MFD_JANZ_CMODIO
1009 help
1010 This enables support for the Janz VMOD-TTL Digital IO module.
1011 This driver provides support for driving the pins in output
1012 mode only. Input mode is not supported.
1014 config GPIO_KEMPLD
1015 tristate "Kontron ETX / COMexpress GPIO"
1016 depends on MFD_KEMPLD
1017 help
1018 This enables support for the PLD GPIO interface on some Kontron ETX
1019 and COMexpress (ETXexpress) modules.
1021 This driver can also be built as a module. If so, the module will be
1022 called gpio-kempld.
1024 config GPIO_LP3943
1025 tristate "TI/National Semiconductor LP3943 GPIO expander"
1026 depends on MFD_LP3943
1027 help
1028 GPIO driver for LP3943 MFD.
1029 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1030 Open drain outputs are required for this usage.
1032 config GPIO_LP873X
1033 tristate "TI LP873X GPO"
1034 depends on MFD_TI_LP873X
1035 help
1036 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1037 on LP873X PMICs.
1039 This driver can also be built as a module. If so, the module will be
1040 called gpio-lp873x.
1042 config GPIO_LP87565
1043 tristate "TI LP87565 GPIO"
1044 depends on MFD_TI_LP87565
1045 help
1046 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1047 on LP87565 PMICs.
1049 This driver can also be built as a module. If so, the module will be
1050 called gpio-lp87565.
1052 config GPIO_MADERA
1053 tristate "Cirrus Logic Madera class codecs"
1054 depends on PINCTRL_MADERA
1055 help
1056 Support for GPIOs on Cirrus Logic Madera class codecs.
1058 config GPIO_MAX77620
1059 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1060 depends on MFD_MAX77620
1061 help
1062 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1063 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1064 driver also provides interrupt support for each of the gpios.
1065 Say yes here to enable the max77620 to be used as gpio controller.
1067 config GPIO_MSIC
1068 bool "Intel MSIC mixed signal gpio support"
1069 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1070 help
1071 Enable support for GPIO on intel MSIC controllers found in
1072 intel MID devices
1074 config GPIO_PALMAS
1075 bool "TI PALMAS series PMICs GPIO"
1076 depends on MFD_PALMAS
1077 help
1078 Select this option to enable GPIO driver for the TI PALMAS
1079 series chip family.
1081 config GPIO_RC5T583
1082 bool "RICOH RC5T583 GPIO"
1083 depends on MFD_RC5T583
1084 help
1085 Select this option to enable GPIO driver for the Ricoh RC5T583
1086 chip family.
1087 This driver provides the support for driving/reading the gpio pins
1088 of RC5T583 device through standard gpio library.
1090 config GPIO_STMPE
1091 bool "STMPE GPIOs"
1092 depends on MFD_STMPE
1093 depends on OF_GPIO
1094 select GPIOLIB_IRQCHIP
1095 help
1096 This enables support for the GPIOs found on the STMPE I/O
1097 Expanders.
1099 config GPIO_TC3589X
1100 bool "TC3589X GPIOs"
1101 depends on MFD_TC3589X
1102 depends on OF_GPIO
1103 select GPIOLIB_IRQCHIP
1104 help
1105 This enables support for the GPIOs found on the TC3589X
1106 I/O Expander.
1108 config GPIO_TIMBERDALE
1109 bool "Support for timberdale GPIO IP"
1110 depends on MFD_TIMBERDALE
1111 ---help---
1112 Add support for the GPIO IP in the timberdale FPGA.
1114 config GPIO_TPS65086
1115 tristate "TI TPS65086 GPO"
1116 depends on MFD_TPS65086
1117 help
1118 This driver supports the GPO on TI TPS65086x PMICs.
1120 config GPIO_TPS65218
1121 tristate "TPS65218 GPIO"
1122 depends on MFD_TPS65218
1123 help
1124 Select this option to enable GPIO driver for the TPS65218
1125 chip family.
1127 config GPIO_TPS6586X
1128 bool "TPS6586X GPIO"
1129 depends on MFD_TPS6586X
1130 help
1131 Select this option to enable GPIO driver for the TPS6586X
1132 chip family.
1134 config GPIO_TPS65910
1135 bool "TPS65910 GPIO"
1136 depends on MFD_TPS65910
1137 help
1138 Select this option to enable GPIO driver for the TPS65910
1139 chip family.
1141 config GPIO_TPS65912
1142 tristate "TI TPS65912 GPIO"
1143 depends on MFD_TPS65912
1144 help
1145 This driver supports TPS65912 gpio chip
1147 config GPIO_TPS68470
1148 bool "TPS68470 GPIO"
1149 depends on MFD_TPS68470
1150 help
1151 Select this option to enable GPIO driver for the TPS68470
1152 chip family.
1153 There are 7 GPIOs and few sensor related GPIOs supported
1154 by the TPS68470. While the 7 GPIOs can be configured as
1155 input or output as appropriate, the sensor related GPIOs
1156 are "output only" GPIOs.
1158 This driver config is bool, as the GPIO functionality
1159 of the TPS68470 must be available before dependent
1160 drivers are loaded.
1162 config GPIO_TWL4030
1163 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1164 depends on TWL4030_CORE
1165 help
1166 Say yes here to access the GPIO signals of various multi-function
1167 power management chips from Texas Instruments.
1169 config GPIO_TWL6040
1170 tristate "TWL6040 GPO"
1171 depends on TWL6040_CORE
1172 help
1173 Say yes here to access the GPO signals of twl6040
1174 audio chip from Texas Instruments.
1176 config GPIO_UCB1400
1177 tristate "Philips UCB1400 GPIO"
1178 depends on UCB1400_CORE
1179 help
1180 This enables support for the Philips UCB1400 GPIO pins.
1181 The UCB1400 is an AC97 audio codec.
1183 config GPIO_WHISKEY_COVE
1184 tristate "GPIO support for Whiskey Cove PMIC"
1185 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1186 select GPIOLIB_IRQCHIP
1187 help
1188 Support for GPIO pins on Whiskey Cove PMIC.
1190 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1191 inside.
1193 This driver can also be built as a module. If so, the module will be
1194 called gpio-wcove.
1196 config GPIO_WM831X
1197 tristate "WM831x GPIOs"
1198 depends on MFD_WM831X
1199 help
1200 Say yes here to access the GPIO signals of WM831x power management
1201 chips from Wolfson Microelectronics.
1203 config GPIO_WM8350
1204 tristate "WM8350 GPIOs"
1205 depends on MFD_WM8350
1206 help
1207 Say yes here to access the GPIO signals of WM8350 power management
1208 chips from Wolfson Microelectronics.
1210 config GPIO_WM8994
1211 tristate "WM8994 GPIOs"
1212 depends on MFD_WM8994
1213 help
1214 Say yes here to access the GPIO signals of WM8994 audio hub
1215 CODECs from Wolfson Microelectronics.
1217 endmenu
1219 menu "PCI GPIO expanders"
1220 depends on PCI
1222 config GPIO_AMD8111
1223 tristate "AMD 8111 GPIO driver"
1224 depends on X86 || COMPILE_TEST
1225 help
1226 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1228 Note, that usually system firmware/ACPI handles GPIO pins on their
1229 own and users might easily break their systems with uncarefull usage
1230 of this driver!
1232 If unsure, say N
1234 config GPIO_BT8XX
1235 tristate "BT8XX GPIO abuser"
1236 depends on VIDEO_BT848=n
1237 help
1238 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1239 as a cheap PCI GPIO card.
1241 This chip can be found on Miro, Hauppauge and STB TV-cards.
1243 The card needs to be physically altered for using it as a
1244 GPIO card. For more information on how to build a GPIO card
1245 from a BT8xx TV card, see the documentation file at
1246 Documentation/bt8xxgpio.txt
1248 If unsure, say N.
1250 config GPIO_INTEL_MID
1251 bool "Intel MID GPIO support"
1252 depends on X86_INTEL_MID
1253 select GPIOLIB_IRQCHIP
1254 help
1255 Say Y here to support Intel MID GPIO.
1257 config GPIO_MERRIFIELD
1258 tristate "Intel Merrifield GPIO support"
1259 depends on X86_INTEL_MID
1260 select GPIOLIB_IRQCHIP
1261 help
1262 Say Y here to support Intel Merrifield GPIO.
1264 config GPIO_ML_IOH
1265 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1266 depends on X86 || COMPILE_TEST
1267 select GENERIC_IRQ_CHIP
1268 help
1269 ML7213 is companion chip for Intel Atom E6xx series.
1270 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1271 Hub) which is for IVI(In-Vehicle Infotainment) use.
1272 This driver can access the IOH's GPIO device.
1274 config GPIO_PCH
1275 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1276 depends on X86_32 || MIPS || COMPILE_TEST
1277 select GENERIC_IRQ_CHIP
1278 help
1279 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1280 which is an IOH(Input/Output Hub) for x86 embedded processor.
1281 This driver can access PCH GPIO device.
1283 This driver also can be used for LAPIS Semiconductor IOH(Input/
1284 Output Hub), ML7223 and ML7831.
1285 ML7223 IOH is for MP(Media Phone) use.
1286 ML7831 IOH is for general purpose use.
1287 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1288 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1290 config GPIO_PCI_IDIO_16
1291 tristate "ACCES PCI-IDIO-16 GPIO support"
1292 select GPIOLIB_IRQCHIP
1293 help
1294 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1295 generated when any of the inputs change state (low to high or high to
1296 low). Input filter control is not supported by this driver, and the
1297 input filters are deactivated by this driver.
1299 config GPIO_PCIE_IDIO_24
1300 tristate "ACCES PCIe-IDIO-24 GPIO support"
1301 select GPIOLIB_IRQCHIP
1302 help
1303 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1304 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1305 when any of the inputs change state (low to high or high to low).
1306 Input filter control is not supported by this driver, and the input
1307 filters are deactivated by this driver.
1309 config GPIO_RDC321X
1310 tristate "RDC R-321x GPIO support"
1311 select MFD_CORE
1312 select MFD_RDC321X
1313 help
1314 Support for the RDC R321x SoC GPIOs over southbridge
1315 PCI configuration space.
1317 config GPIO_SODAVILLE
1318 bool "Intel Sodaville GPIO support"
1319 depends on X86 && OF
1320 select GPIO_GENERIC
1321 select GENERIC_IRQ_CHIP
1322 help
1323 Say Y here to support Intel Sodaville GPIO.
1325 endmenu
1327 menu "SPI GPIO expanders"
1328 depends on SPI_MASTER
1330 config GPIO_74X164
1331 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1332 depends on OF_GPIO
1333 help
1334 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1335 shift registers. This driver can be used to provide access
1336 to more gpio outputs.
1338 config GPIO_MAX3191X
1339 tristate "Maxim MAX3191x industrial serializer"
1340 select CRC8
1341 help
1342 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1343 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1344 chip to make 8 digital 24V inputs available via SPI. Supports
1345 CRC checksums to guard against electromagnetic interference,
1346 as well as undervoltage and overtemperature detection.
1348 config GPIO_MAX7301
1349 tristate "Maxim MAX7301 GPIO expander"
1350 select GPIO_MAX730X
1351 help
1352 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1354 config GPIO_MC33880
1355 tristate "Freescale MC33880 high-side/low-side switch"
1356 help
1357 SPI driver for Freescale MC33880 high-side/low-side switch.
1358 This provides GPIO interface supporting inputs and outputs.
1360 config GPIO_PISOSR
1361 tristate "Generic parallel-in/serial-out shift register"
1362 help
1363 GPIO driver for SPI compatible parallel-in/serial-out shift
1364 registers. These are input only devices.
1366 config GPIO_XRA1403
1367 tristate "EXAR XRA1403 16-bit GPIO expander"
1368 select REGMAP_SPI
1369 help
1370 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1372 endmenu
1374 menu "USB GPIO expanders"
1375 depends on USB
1377 config GPIO_VIPERBOARD
1378 tristate "Viperboard GPIO a & b support"
1379 depends on MFD_VIPERBOARD
1380 help
1381 Say yes here to access the GPIO signals of Nano River
1382 Technologies Viperboard. There are two GPIO chips on the
1383 board: gpioa and gpiob.
1384 See viperboard API specification and Nano
1385 River Tech's viperboard.h for detailed meaning
1386 of the module parameters.
1388 endmenu
1390 endif