tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#
2# GPIO infrastructure and drivers
3#
4
5config 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.
12
13menuconfig 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.
20
21 If unsure, say N.
22
23if GPIOLIB
24
25config OF_GPIO
26 def_bool y
27 depends on OF
28 depends on HAS_IOMEM
29
30config GPIO_ACPI
31 def_bool y
32 depends on ACPI
33
34config GPIOLIB_IRQCHIP
35 select IRQ_DOMAIN
36 bool
37
38config DEBUG_GPIO
39 bool "Debug GPIO calls"
40 depends on DEBUG_KERNEL
41 help
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.
48
49config GPIO_SYSFS
50 bool "/sys/class/gpio/... (sysfs interface)"
51 depends on SYSFS
52 help
53 Say Y here to add a sysfs interface for GPIOs.
54
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.
60
61 Kernel drivers may also request that a particular GPIO be
62 exported to userspace; this can be useful when debugging.
63
64config GPIO_GENERIC
65 depends on HAS_IOMEM # Only for IOMEM drivers
66 tristate
67
68# put drivers in the right section, in alphabetical order
69
70# This symbol is selected by both I2C and SPI expanders
71config GPIO_MAX730X
72 tristate
73
74menu "Memory mapped GPIO drivers"
75 depends on HAS_IOMEM
76
77config GPIO_74XX_MMIO
78 tristate "GPIO driver for 74xx-ICs with MMIO access"
79 depends on OF_GPIO
80 select GPIO_GENERIC
81 help
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)
90
91config GPIO_ALTERA
92 tristate "Altera GPIO"
93 depends on OF_GPIO
94 select GPIOLIB_IRQCHIP
95 help
96 Say Y or M here to build support for the Altera PIO device.
97
98 If driver is built as a module it will be called gpio-altera.
99
100config GPIO_AMDPT
101 tristate "AMD Promontory GPIO support"
102 depends on ACPI
103 select GPIO_GENERIC
104 help
105 driver for GPIO functionality on Promontory IOHub
106 Require ACPI ASL code to enumerate as a platform device.
107
108config GPIO_ASPEED
109 tristate "Aspeed GPIO support"
110 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
111 select GPIOLIB_IRQCHIP
112 help
113 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
114
115config GPIO_ATH79
116 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
117 default y if ATH79
118 depends on ATH79 || COMPILE_TEST
119 select GPIO_GENERIC
120 select GPIOLIB_IRQCHIP
121 help
122 Select this option to enable GPIO driver for
123 Atheros AR71XX/AR724X/AR913X SoC devices.
124
125config GPIO_BCM_KONA
126 bool "Broadcom Kona GPIO"
127 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
128 help
129 Turn on GPIO support for Broadcom "Kona" chips.
130
131config GPIO_BRCMSTB
132 tristate "BRCMSTB GPIO support"
133 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
134 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
135 select GPIO_GENERIC
136 select IRQ_DOMAIN
137 help
138 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
139
140config GPIO_CLPS711X
141 tristate "CLPS711X GPIO support"
142 depends on ARCH_CLPS711X || COMPILE_TEST
143 select GPIO_GENERIC
144 help
145 Say yes here to support GPIO on CLPS711X SoCs.
146
147config GPIO_DAVINCI
148 bool "TI Davinci/Keystone GPIO support"
149 default y if ARCH_DAVINCI
150 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
151 help
152 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
153
154config GPIO_DWAPB
155 tristate "Synopsys DesignWare APB GPIO driver"
156 select GPIO_GENERIC
157 select GENERIC_IRQ_CHIP
158 help
159 Say Y or M here to build support for the Synopsys DesignWare APB
160 GPIO block.
161
162config GPIO_EM
163 tristate "Emma Mobile GPIO"
164 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
165 help
166 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
167
168config GPIO_EP93XX
169 def_bool y
170 depends on ARCH_EP93XX
171 select GPIO_GENERIC
172
173config GPIO_ETRAXFS
174 bool "Axis ETRAX FS General I/O"
175 depends on CRIS || COMPILE_TEST
176 depends on OF_GPIO
177 select GPIO_GENERIC
178 select GPIOLIB_IRQCHIP
179 help
180 Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
181
182config GPIO_EXAR
183 tristate "Support for GPIO pins on XR17V352/354/358"
184 depends on SERIAL_8250_EXAR
185 help
186 Selecting this option will enable handling of GPIO pins present
187 on Exar XR17V352/354/358 chips.
188
189config GPIO_GE_FPGA
190 bool "GE FPGA based GPIO"
191 depends on GE_FPGA
192 select GPIO_GENERIC
193 help
194 Support for common GPIO functionality provided on some GE Single Board
195 Computers.
196
197 This driver provides basic support (configure as input or output, read
198 and write pin state) for GPIO implemented in a number of GE single
199 board computers.
200
201config GPIO_FTGPIO010
202 bool "Faraday FTGPIO010 GPIO"
203 depends on OF_GPIO
204 select GPIO_GENERIC
205 select GPIOLIB_IRQCHIP
206 default (ARCH_GEMINI || ARCH_MOXART)
207 help
208 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
209 Cortina systems Gemini platforms, Moxa ART and others.
210
211config GPIO_GENERIC_PLATFORM
212 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
213 select GPIO_GENERIC
214 help
215 Say yes here to support basic platform_device memory-mapped GPIO controllers.
216
217config GPIO_GRGPIO
218 tristate "Aeroflex Gaisler GRGPIO support"
219 depends on OF_GPIO
220 select GPIO_GENERIC
221 select IRQ_DOMAIN
222 help
223 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
224 VHDL IP core library.
225
226config GPIO_ICH
227 tristate "Intel ICH GPIO"
228 depends on PCI && X86
229 select MFD_CORE
230 select LPC_ICH
231 help
232 Say yes here to support the GPIO functionality of a number of Intel
233 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
234 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
235 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
236
237 If unsure, say N.
238
239config GPIO_INGENIC
240 tristate "Ingenic JZ47xx SoCs GPIO support"
241 depends on OF
242 depends on MACH_INGENIC || COMPILE_TEST
243 select GPIOLIB_IRQCHIP
244 help
245 Say yes here to support the GPIO functionality present on the
246 JZ4740 and JZ4780 SoCs from Ingenic.
247
248 If unsure, say N.
249
250config GPIO_IOP
251 tristate "Intel IOP GPIO"
252 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
253 select GPIO_GENERIC
254 help
255 Say yes here to support the GPIO functionality of a number of Intel
256 IOP32X or IOP33X.
257
258 If unsure, say N.
259
260config GPIO_LOONGSON
261 bool "Loongson-2/3 GPIO support"
262 depends on CPU_LOONGSON2 || CPU_LOONGSON3
263 help
264 driver for GPIO functionality on Loongson-2F/3A/3B processors.
265
266config GPIO_LPC18XX
267 tristate "NXP LPC18XX/43XX GPIO support"
268 default y if ARCH_LPC18XX
269 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
270 help
271 Select this option to enable GPIO driver for
272 NXP LPC18XX/43XX devices.
273
274config GPIO_LYNXPOINT
275 tristate "Intel Lynxpoint GPIO support"
276 depends on ACPI && X86
277 select GPIOLIB_IRQCHIP
278 help
279 driver for GPIO functionality on Intel Lynxpoint PCH chipset
280 Requires ACPI device enumeration code to set up a platform device.
281
282config GPIO_MB86S7X
283 tristate "GPIO support for Fujitsu MB86S7x Platforms"
284 help
285 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
286
287config GPIO_MENZ127
288 tristate "MEN 16Z127 GPIO support"
289 depends on MCB
290 select GPIO_GENERIC
291 help
292 Say yes here to support the MEN 16Z127 GPIO Controller
293
294config GPIO_MM_LANTIQ
295 bool "Lantiq Memory mapped GPIOs"
296 depends on LANTIQ && SOC_XWAY
297 help
298 This enables support for memory mapped GPIOs on the External Bus Unit
299 (EBU) found on Lantiq SoCs. The gpios are output only as they are
300 created by attaching a 16bit latch to the bus.
301
302config GPIO_MOCKUP
303 tristate "GPIO Testing Driver"
304 depends on GPIOLIB && SYSFS
305 select GPIO_SYSFS
306 select GPIOLIB_IRQCHIP
307 select IRQ_SIM
308 help
309 This enables GPIO Testing driver, which provides a way to test GPIO
310 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
311 must be selected for this test.
312 User could use it through the script in
313 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
314 it.
315
316config GPIO_MPC5200
317 def_bool y
318 depends on PPC_MPC52xx
319
320config GPIO_MPC8XXX
321 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
322 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
323 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
324 COMPILE_TEST
325 select GPIO_GENERIC
326 select IRQ_DOMAIN
327 help
328 Say Y here if you're going to use hardware that connects to the
329 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
330
331config GPIO_MVEBU
332 def_bool y
333 depends on PLAT_ORION || ARCH_MVEBU
334 depends on OF_GPIO
335 select GENERIC_IRQ_CHIP
336 select REGMAP_MMIO
337
338config GPIO_MXC
339 def_bool y
340 depends on ARCH_MXC
341 select GPIO_GENERIC
342 select GENERIC_IRQ_CHIP
343
344config GPIO_MXS
345 def_bool y
346 depends on ARCH_MXS
347 select GPIO_GENERIC
348 select GENERIC_IRQ_CHIP
349
350config GPIO_OCTEON
351 tristate "Cavium OCTEON GPIO"
352 depends on GPIOLIB && CAVIUM_OCTEON_SOC
353 default y
354 help
355 Say yes here to support the on-chip GPIO lines on the OCTEON
356 family of SOCs.
357
358config GPIO_OMAP
359 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
360 default y if ARCH_OMAP
361 depends on ARM
362 select GENERIC_IRQ_CHIP
363 select GPIOLIB_IRQCHIP
364 help
365 Say yes here to enable GPIO support for TI OMAP SoCs.
366
367config GPIO_PL061
368 bool "PrimeCell PL061 GPIO support"
369 depends on ARM_AMBA
370 select IRQ_DOMAIN
371 select GPIOLIB_IRQCHIP
372 help
373 Say yes here to support the PrimeCell PL061 GPIO device
374
375config GPIO_PXA
376 bool "PXA GPIO support"
377 depends on ARCH_PXA || ARCH_MMP
378 help
379 Say yes here to support the PXA GPIO device
380
381config GPIO_RCAR
382 tristate "Renesas R-Car GPIO"
383 depends on ARCH_RENESAS || COMPILE_TEST
384 select GPIOLIB_IRQCHIP
385 help
386 Say yes here to support GPIO on Renesas R-Car SoCs.
387
388config GPIO_REG
389 bool
390 help
391 A 32-bit single register GPIO fixed in/out implementation. This
392 can be used to represent any register as a set of GPIO signals.
393
394config GPIO_SPEAR_SPICS
395 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
396 depends on PLAT_SPEAR
397 select GENERIC_IRQ_CHIP
398 help
399 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
400
401config GPIO_STA2X11
402 bool "STA2x11/ConneXt GPIO support"
403 depends on MFD_STA2X11
404 select GENERIC_IRQ_CHIP
405 help
406 Say yes here to support the STA2x11/ConneXt GPIO device.
407 The GPIO module has 128 GPIO pins with alternate functions.
408
409config GPIO_STP_XWAY
410 bool "XWAY STP GPIOs"
411 depends on SOC_XWAY
412 help
413 This enables support for the Serial To Parallel (STP) unit found on
414 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
415 that can be up to 24 bit. This peripheral is aimed at driving leds.
416 Some of the gpios/leds can be auto updated by the soc with dsl and
417 phy status.
418
419config GPIO_SYSCON
420 tristate "GPIO based on SYSCON"
421 depends on MFD_SYSCON && OF
422 help
423 Say yes here to support GPIO functionality though SYSCON driver.
424
425config GPIO_TB10X
426 bool
427 select GENERIC_IRQ_CHIP
428 select OF_GPIO
429
430config GPIO_TEGRA
431 bool "NVIDIA Tegra GPIO support"
432 default ARCH_TEGRA
433 depends on ARCH_TEGRA || COMPILE_TEST
434 depends on OF_GPIO
435 help
436 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
437
438config GPIO_TEGRA186
439 tristate "NVIDIA Tegra186 GPIO support"
440 default ARCH_TEGRA_186_SOC
441 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
442 depends on OF_GPIO
443 select GPIOLIB_IRQCHIP
444 help
445 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
446
447config GPIO_TS4800
448 tristate "TS-4800 DIO blocks and compatibles"
449 depends on OF_GPIO
450 depends on SOC_IMX51 || COMPILE_TEST
451 select GPIO_GENERIC
452 help
453 This driver support TS-4800 FPGA GPIO controllers.
454
455config GPIO_THUNDERX
456 tristate "Cavium ThunderX/OCTEON-TX GPIO"
457 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
458 depends on PCI_MSI
459 select IRQ_DOMAIN_HIERARCHY
460 select IRQ_FASTEOI_HIERARCHY_HANDLERS
461 help
462 Say yes here to support the on-chip GPIO lines on the ThunderX
463 and OCTEON-TX families of SoCs.
464
465config GPIO_TZ1090
466 bool "Toumaz Xenif TZ1090 GPIO support"
467 depends on SOC_TZ1090
468 select GENERIC_IRQ_CHIP
469 default y
470 help
471 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
472
473config GPIO_TZ1090_PDC
474 bool "Toumaz Xenif TZ1090 PDC GPIO support"
475 depends on SOC_TZ1090
476 default y
477 help
478 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
479
480config GPIO_UNIPHIER
481 tristate "UniPhier GPIO support"
482 depends on ARCH_UNIPHIER || COMPILE_TEST
483 depends on OF_GPIO
484 select IRQ_DOMAIN_HIERARCHY
485 help
486 Say yes here to support UniPhier GPIOs.
487
488config GPIO_VF610
489 def_bool y
490 depends on ARCH_MXC && SOC_VF610
491 select GPIOLIB_IRQCHIP
492 help
493 Say yes here to support Vybrid vf610 GPIOs.
494
495config GPIO_VR41XX
496 tristate "NEC VR4100 series General-purpose I/O Uint support"
497 depends on CPU_VR41XX
498 help
499 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
500
501config GPIO_VX855
502 tristate "VIA VX855/VX875 GPIO"
503 depends on (X86 || COMPILE_TEST) && PCI
504 select MFD_CORE
505 select MFD_VX855
506 help
507 Support access to the VX855/VX875 GPIO lines through the gpio library.
508
509 This driver provides common support for accessing the device,
510 additional drivers must be enabled in order to use the
511 functionality of the device.
512
513config GPIO_XGENE
514 bool "APM X-Gene GPIO controller support"
515 depends on ARM64 && OF_GPIO
516 help
517 This driver is to support the GPIO block within the APM X-Gene SoC
518 platform's generic flash controller. The GPIO pins are muxed with
519 the generic flash controller's address and data pins. Say yes
520 here to enable the GFC GPIO functionality.
521
522config GPIO_XGENE_SB
523 tristate "APM X-Gene GPIO standby controller support"
524 depends on ARCH_XGENE && OF_GPIO
525 select GPIO_GENERIC
526 select GPIOLIB_IRQCHIP
527 select IRQ_DOMAIN_HIERARCHY
528 help
529 This driver supports the GPIO block within the APM X-Gene
530 Standby Domain. Say yes here to enable the GPIO functionality.
531
532config GPIO_XILINX
533 tristate "Xilinx GPIO support"
534 depends on OF_GPIO
535 help
536 Say yes here to support the Xilinx FPGA GPIO device
537
538config GPIO_XLP
539 tristate "Netlogic XLP GPIO support"
540 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
541 select GPIOLIB_IRQCHIP
542 help
543 This driver provides support for GPIO interface on Netlogic XLP MIPS64
544 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
545 XLP9XX and XLP5XX. The same GPIO controller block is also present in
546 Cavium's ThunderX2 CN99XX SoCs.
547
548 If unsure, say N.
549
550config GPIO_XTENSA
551 bool "Xtensa GPIO32 support"
552 depends on XTENSA
553 depends on HAVE_XTENSA_GPIO32
554 depends on !SMP
555 help
556 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
557 and EXPSTATE (output) ports
558
559config GPIO_ZEVIO
560 bool "LSI ZEVIO SoC memory mapped GPIOs"
561 depends on ARM && OF_GPIO
562 help
563 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
564
565config GPIO_ZYNQ
566 tristate "Xilinx Zynq GPIO support"
567 depends on ARCH_ZYNQ || ARCH_ZYNQMP
568 select GPIOLIB_IRQCHIP
569 help
570 Say yes here to support Xilinx Zynq GPIO controller.
571
572config GPIO_ZX
573 bool "ZTE ZX GPIO support"
574 depends on ARCH_ZX || COMPILE_TEST
575 select GPIOLIB_IRQCHIP
576 help
577 Say yes here to support the GPIO device on ZTE ZX SoCs.
578
579config GPIO_LOONGSON1
580 tristate "Loongson1 GPIO support"
581 depends on MACH_LOONGSON32
582 select GPIO_GENERIC
583 help
584 Say Y or M here to support GPIO on Loongson1 SoCs.
585
586endmenu
587
588menu "Port-mapped I/O GPIO drivers"
589 depends on X86 # Unconditional I/O space access
590
591config GPIO_104_DIO_48E
592 tristate "ACCES 104-DIO-48E GPIO support"
593 depends on PC104 && ISA_BUS_API
594 select GPIOLIB_IRQCHIP
595 help
596 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
597 104-DIO-24E). The base port addresses for the devices may be
598 configured via the base module parameter. The interrupt line numbers
599 for the devices may be configured via the irq module parameter.
600
601config GPIO_104_IDIO_16
602 tristate "ACCES 104-IDIO-16 GPIO support"
603 depends on PC104 && ISA_BUS_API
604 select GPIOLIB_IRQCHIP
605 help
606 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
607 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
608 base port addresses for the devices may be configured via the base
609 module parameter. The interrupt line numbers for the devices may be
610 configured via the irq module parameter.
611
612config GPIO_104_IDI_48
613 tristate "ACCES 104-IDI-48 GPIO support"
614 depends on PC104 && ISA_BUS_API
615 select GPIOLIB_IRQCHIP
616 help
617 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
618 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
619 the devices may be configured via the base module parameter. The
620 interrupt line numbers for the devices may be configured via the irq
621 module parameter.
622
623config GPIO_F7188X
624 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
625 help
626 This option enables support for GPIOs found on Fintek Super-I/O
627 chips F71869, F71869A, F71882FG, F71889F and F81866.
628
629 To compile this driver as a module, choose M here: the module will
630 be called f7188x-gpio.
631
632config GPIO_GPIO_MM
633 tristate "Diamond Systems GPIO-MM GPIO support"
634 depends on PC104 && ISA_BUS_API
635 help
636 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
637
638 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
639 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
640 support for these 48 channels of digital I/O.
641
642 The base port addresses for the devices may be configured via the base
643 array module parameter.
644
645config GPIO_IT87
646 tristate "IT87xx GPIO support"
647 help
648 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
649
650 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
651 supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
652
653 To compile this driver as a module, choose M here: the module will
654 be called gpio_it87
655
656config GPIO_SCH
657 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
658 depends on (X86 || COMPILE_TEST) && PCI
659 select MFD_CORE
660 select LPC_SCH
661 help
662 Say yes here to support GPIO interface on Intel Poulsbo SCH,
663 Intel Tunnel Creek processor, Intel Centerton processor or
664 Intel Quark X1000 SoC.
665
666 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
667 powered by the core power rail and are turned off during sleep
668 modes (S3 and higher). The remaining four GPIOs are powered by
669 the Intel SCH suspend power supply. These GPIOs remain
670 active during S3. The suspend powered GPIOs can be used to wake the
671 system from the Suspend-to-RAM state.
672
673 The Intel Tunnel Creek processor has 5 GPIOs powered by the
674 core power rail and 9 from suspend power supply.
675
676 The Intel Centerton processor has a total of 30 GPIO pins.
677 Twenty-one are powered by the core power rail and 9 from the
678 suspend power supply.
679
680 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
681 power well and 6 from the suspend power well.
682
683config GPIO_SCH311X
684 tristate "SMSC SCH311x SuperI/O GPIO"
685 help
686 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
687 SCH3116 "Super I/O" chipsets.
688
689 To compile this driver as a module, choose M here: the module will
690 be called gpio-sch311x.
691
692config GPIO_TS5500
693 tristate "TS-5500 DIO blocks and compatibles"
694 depends on TS5500 || COMPILE_TEST
695 help
696 This driver supports Digital I/O exposed by pin blocks found on some
697 Technologic Systems platforms. It includes, but is not limited to, 3
698 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
699 LCD port.
700
701config GPIO_WINBOND
702 tristate "Winbond Super I/O GPIO support"
703 depends on ISA_BUS_API
704 help
705 This option enables support for GPIOs found on Winbond Super I/O
706 chips.
707 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
708 supported.
709
710 You will need to provide a module parameter "gpios", or a
711 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
712 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
713
714 To compile this driver as a module, choose M here: the module will
715 be called gpio-winbond.
716
717config GPIO_WS16C48
718 tristate "WinSystems WS16C48 GPIO support"
719 depends on ISA_BUS_API
720 select GPIOLIB_IRQCHIP
721 help
722 Enables GPIO support for the WinSystems WS16C48. The base port
723 addresses for the devices may be configured via the base module
724 parameter. The interrupt line numbers for the devices may be
725 configured via the irq module parameter.
726
727endmenu
728
729menu "I2C GPIO expanders"
730 depends on I2C
731
732config GPIO_ADP5588
733 tristate "ADP5588 I2C GPIO expander"
734 help
735 This option enables support for 18 GPIOs found
736 on Analog Devices ADP5588 GPIO Expanders.
737
738config GPIO_ADP5588_IRQ
739 bool "Interrupt controller support for ADP5588"
740 depends on GPIO_ADP5588=y
741 help
742 Say yes here to enable the adp5588 to be used as an interrupt
743 controller. It requires the driver to be built in the kernel.
744
745config GPIO_ADNP
746 tristate "Avionic Design N-bit GPIO expander"
747 depends on OF_GPIO
748 select GPIOLIB_IRQCHIP
749 help
750 This option enables support for N GPIOs found on Avionic Design
751 I2C GPIO expanders. The register space will be extended by powers
752 of two, so the controller will need to accommodate for that. For
753 example: if a controller provides 48 pins, 6 registers will be
754 enough to represent all pins, but the driver will assume a
755 register layout for 64 pins (8 registers).
756
757config GPIO_MAX7300
758 tristate "Maxim MAX7300 GPIO expander"
759 select GPIO_MAX730X
760 help
761 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
762
763config GPIO_MAX732X
764 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
765 help
766 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
767 Port Expanders. Each IO port on these chips has a fixed role of
768 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
769 Input and Output (designed by 'P'). The combinations are listed
770 below:
771
772 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
773 max7322 (4I4O), max7323 (4P4O)
774
775 16 bits: max7324 (8I8O), max7325 (8P8O),
776 max7326 (4I12O), max7327 (4P12O)
777
778 Board setup code must specify the model to use, and the start
779 number for these GPIOs.
780
781config GPIO_MAX732X_IRQ
782 bool "Interrupt controller support for MAX732x"
783 depends on GPIO_MAX732X=y
784 select GPIOLIB_IRQCHIP
785 help
786 Say yes here to enable the max732x to be used as an interrupt
787 controller. It requires the driver to be built in the kernel.
788
789config GPIO_MC9S08DZ60
790 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
791 depends on I2C=y && MACH_MX35_3DS
792 help
793 Select this to enable the MC9S08DZ60 GPIO driver
794
795config GPIO_PCA953X
796 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
797 help
798 Say yes here to provide access to several register-oriented
799 SMBus I/O expanders, made mostly by NXP or TI. Compatible
800 models include:
801
802 4 bits: pca9536, pca9537
803
804 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
805 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
806
807 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
808 tca6416
809
810 24 bits: tca6424
811
812 40 bits: pca9505, pca9698
813
814config GPIO_PCA953X_IRQ
815 bool "Interrupt controller support for PCA953x"
816 depends on GPIO_PCA953X=y
817 select GPIOLIB_IRQCHIP
818 help
819 Say yes here to enable the pca953x to be used as an interrupt
820 controller. It requires the driver to be built in the kernel.
821
822config GPIO_PCF857X
823 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
824 select GPIOLIB_IRQCHIP
825 select IRQ_DOMAIN
826 help
827 Say yes here to provide access to most "quasi-bidirectional" I2C
828 GPIO expanders used for additional digital outputs or inputs.
829 Most of these parts are from NXP, though TI is a second source for
830 some of them. Compatible models include:
831
832 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
833 pca9670, pca9672, pca9674, pca9674a,
834 max7328, max7329
835
836 16 bits: pcf8575, pcf8575c, pca8575,
837 pca9671, pca9673, pca9675
838
839 Your board setup code will need to declare the expanders in
840 use, and assign numbers to the GPIOs they expose. Those GPIOs
841 can then be used from drivers and other kernel code, just like
842 other GPIOs, but only accessible from task contexts.
843
844 This driver provides an in-kernel interface to those GPIOs using
845 platform-neutral GPIO calls.
846
847config GPIO_TPIC2810
848 tristate "TPIC2810 8-Bit I2C GPO expander"
849 help
850 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
851
852 To compile this driver as a module, choose M here: the module will
853 be called gpio-tpic2810.
854
855config GPIO_TS4900
856 tristate "Technologic Systems FPGA I2C GPIO"
857 depends on SOC_IMX6 || COMPILE_TEST
858 select REGMAP_I2C
859 help
860 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
861 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
862
863endmenu
864
865menu "MFD GPIO expanders"
866
867config GPIO_ADP5520
868 tristate "GPIO Support for ADP5520 PMIC"
869 depends on PMIC_ADP5520
870 help
871 This option enables support for on-chip GPIO found
872 on Analog Devices ADP5520 PMICs.
873
874config GPIO_ALTERA_A10SR
875 tristate "Altera Arria10 System Resource GPIO"
876 depends on MFD_ALTERA_A10SR
877 help
878 Driver for Arria10 Development Kit GPIO expansion which
879 includes reads of pushbuttons and DIP switches as well
880 as writes to LEDs.
881
882config GPIO_ARIZONA
883 tristate "Wolfson Microelectronics Arizona class devices"
884 depends on MFD_ARIZONA
885 help
886 Support for GPIOs on Wolfson Arizona class devices.
887
888config GPIO_BD9571MWV
889 tristate "ROHM BD9571 GPIO support"
890 depends on MFD_BD9571MWV
891 help
892 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
893 available on the ROHM PMIC in total, both of which can also
894 generate interrupts.
895
896 This driver can also be built as a module. If so, the module
897 will be called gpio-bd9571mwv.
898
899config GPIO_CRYSTAL_COVE
900 tristate "GPIO support for Crystal Cove PMIC"
901 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
902 select GPIOLIB_IRQCHIP
903 help
904 Support for GPIO pins on Crystal Cove PMIC.
905
906 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
907 inside.
908
909 This driver can also be built as a module. If so, the module will be
910 called gpio-crystalcove.
911
912config GPIO_CS5535
913 tristate "AMD CS5535/CS5536 GPIO support"
914 depends on X86 || MIPS || COMPILE_TEST
915 depends on MFD_CS5535
916 help
917 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
918 can be used for quite a number of things. The CS5535/6 is found on
919 AMD Geode and Lemote Yeeloong devices.
920
921 If unsure, say N.
922
923config GPIO_DA9052
924 tristate "Dialog DA9052 GPIO"
925 depends on PMIC_DA9052
926 help
927 Say yes here to enable the GPIO driver for the DA9052 chip.
928
929config GPIO_DA9055
930 tristate "Dialog Semiconductor DA9055 GPIO"
931 depends on MFD_DA9055
932 help
933 Say yes here to enable the GPIO driver for the DA9055 chip.
934
935 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
936 be controller by this driver.
937
938 If driver is built as a module it will be called gpio-da9055.
939
940config GPIO_DLN2
941 tristate "Diolan DLN2 GPIO support"
942 depends on MFD_DLN2
943 select GPIOLIB_IRQCHIP
944
945 help
946 Select this option to enable GPIO driver for the Diolan DLN2
947 board.
948
949 This driver can also be built as a module. If so, the module
950 will be called gpio-dln2.
951
952config HTC_EGPIO
953 bool "HTC EGPIO support"
954 depends on GPIOLIB && ARM
955 help
956 This driver supports the CPLD egpio chip present on
957 several HTC phones. It provides basic support for input
958 pins, output pins, and irqs.
959
960config GPIO_JANZ_TTL
961 tristate "Janz VMOD-TTL Digital IO Module"
962 depends on MFD_JANZ_CMODIO
963 help
964 This enables support for the Janz VMOD-TTL Digital IO module.
965 This driver provides support for driving the pins in output
966 mode only. Input mode is not supported.
967
968config GPIO_KEMPLD
969 tristate "Kontron ETX / COMexpress GPIO"
970 depends on MFD_KEMPLD
971 help
972 This enables support for the PLD GPIO interface on some Kontron ETX
973 and COMexpress (ETXexpress) modules.
974
975 This driver can also be built as a module. If so, the module will be
976 called gpio-kempld.
977
978config GPIO_LP3943
979 tristate "TI/National Semiconductor LP3943 GPIO expander"
980 depends on MFD_LP3943
981 help
982 GPIO driver for LP3943 MFD.
983 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
984 Open drain outputs are required for this usage.
985
986config GPIO_LP873X
987 tristate "TI LP873X GPO"
988 depends on MFD_TI_LP873X
989 help
990 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
991 on LP873X PMICs.
992
993 This driver can also be built as a module. If so, the module will be
994 called gpio-lp873x.
995
996config GPIO_LP87565
997 tristate "TI LP87565 GPIO"
998 depends on MFD_TI_LP87565
999 help
1000 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1001 on LP87565 PMICs.
1002
1003 This driver can also be built as a module. If so, the module will be
1004 called gpio-lp87565.
1005
1006config GPIO_MAX77620
1007 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1008 depends on MFD_MAX77620
1009 help
1010 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1011 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1012 driver also provides interrupt support for each of the gpios.
1013 Say yes here to enable the max77620 to be used as gpio controller.
1014
1015config GPIO_MSIC
1016 bool "Intel MSIC mixed signal gpio support"
1017 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1018 help
1019 Enable support for GPIO on intel MSIC controllers found in
1020 intel MID devices
1021
1022config GPIO_PALMAS
1023 bool "TI PALMAS series PMICs GPIO"
1024 depends on MFD_PALMAS
1025 help
1026 Select this option to enable GPIO driver for the TI PALMAS
1027 series chip family.
1028
1029config GPIO_RC5T583
1030 bool "RICOH RC5T583 GPIO"
1031 depends on MFD_RC5T583
1032 help
1033 Select this option to enable GPIO driver for the Ricoh RC5T583
1034 chip family.
1035 This driver provides the support for driving/reading the gpio pins
1036 of RC5T583 device through standard gpio library.
1037
1038config GPIO_STMPE
1039 bool "STMPE GPIOs"
1040 depends on MFD_STMPE
1041 depends on OF_GPIO
1042 select GPIOLIB_IRQCHIP
1043 help
1044 This enables support for the GPIOs found on the STMPE I/O
1045 Expanders.
1046
1047config GPIO_TC3589X
1048 bool "TC3589X GPIOs"
1049 depends on MFD_TC3589X
1050 depends on OF_GPIO
1051 select GPIOLIB_IRQCHIP
1052 help
1053 This enables support for the GPIOs found on the TC3589X
1054 I/O Expander.
1055
1056config GPIO_TIMBERDALE
1057 bool "Support for timberdale GPIO IP"
1058 depends on MFD_TIMBERDALE
1059 ---help---
1060 Add support for the GPIO IP in the timberdale FPGA.
1061
1062config GPIO_TPS65086
1063 tristate "TI TPS65086 GPO"
1064 depends on MFD_TPS65086
1065 help
1066 This driver supports the GPO on TI TPS65086x PMICs.
1067
1068config GPIO_TPS65218
1069 tristate "TPS65218 GPIO"
1070 depends on MFD_TPS65218
1071 help
1072 Select this option to enable GPIO driver for the TPS65218
1073 chip family.
1074
1075config GPIO_TPS6586X
1076 bool "TPS6586X GPIO"
1077 depends on MFD_TPS6586X
1078 help
1079 Select this option to enable GPIO driver for the TPS6586X
1080 chip family.
1081
1082config GPIO_TPS65910
1083 bool "TPS65910 GPIO"
1084 depends on MFD_TPS65910
1085 help
1086 Select this option to enable GPIO driver for the TPS65910
1087 chip family.
1088
1089config GPIO_TPS65912
1090 tristate "TI TPS65912 GPIO"
1091 depends on MFD_TPS65912
1092 help
1093 This driver supports TPS65912 gpio chip
1094
1095config GPIO_TPS68470
1096 bool "TPS68470 GPIO"
1097 depends on MFD_TPS68470
1098 help
1099 Select this option to enable GPIO driver for the TPS68470
1100 chip family.
1101 There are 7 GPIOs and few sensor related GPIOs supported
1102 by the TPS68470. While the 7 GPIOs can be configured as
1103 input or output as appropriate, the sensor related GPIOs
1104 are "output only" GPIOs.
1105
1106 This driver config is bool, as the GPIO functionality
1107 of the TPS68470 must be available before dependent
1108 drivers are loaded.
1109
1110config GPIO_TWL4030
1111 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1112 depends on TWL4030_CORE
1113 help
1114 Say yes here to access the GPIO signals of various multi-function
1115 power management chips from Texas Instruments.
1116
1117config GPIO_TWL6040
1118 tristate "TWL6040 GPO"
1119 depends on TWL6040_CORE
1120 help
1121 Say yes here to access the GPO signals of twl6040
1122 audio chip from Texas Instruments.
1123
1124config GPIO_UCB1400
1125 tristate "Philips UCB1400 GPIO"
1126 depends on UCB1400_CORE
1127 help
1128 This enables support for the Philips UCB1400 GPIO pins.
1129 The UCB1400 is an AC97 audio codec.
1130
1131config GPIO_WHISKEY_COVE
1132 tristate "GPIO support for Whiskey Cove PMIC"
1133 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1134 select GPIOLIB_IRQCHIP
1135 help
1136 Support for GPIO pins on Whiskey Cove PMIC.
1137
1138 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1139 inside.
1140
1141 This driver can also be built as a module. If so, the module will be
1142 called gpio-wcove.
1143
1144config GPIO_WM831X
1145 tristate "WM831x GPIOs"
1146 depends on MFD_WM831X
1147 help
1148 Say yes here to access the GPIO signals of WM831x power management
1149 chips from Wolfson Microelectronics.
1150
1151config GPIO_WM8350
1152 tristate "WM8350 GPIOs"
1153 depends on MFD_WM8350
1154 help
1155 Say yes here to access the GPIO signals of WM8350 power management
1156 chips from Wolfson Microelectronics.
1157
1158config GPIO_WM8994
1159 tristate "WM8994 GPIOs"
1160 depends on MFD_WM8994
1161 help
1162 Say yes here to access the GPIO signals of WM8994 audio hub
1163 CODECs from Wolfson Microelectronics.
1164
1165endmenu
1166
1167menu "PCI GPIO expanders"
1168 depends on PCI
1169
1170config GPIO_AMD8111
1171 tristate "AMD 8111 GPIO driver"
1172 depends on X86 || COMPILE_TEST
1173 help
1174 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1175
1176 Note, that usually system firmware/ACPI handles GPIO pins on their
1177 own and users might easily break their systems with uncarefull usage
1178 of this driver!
1179
1180 If unsure, say N
1181
1182config GPIO_BT8XX
1183 tristate "BT8XX GPIO abuser"
1184 depends on VIDEO_BT848=n
1185 help
1186 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1187 as a cheap PCI GPIO card.
1188
1189 This chip can be found on Miro, Hauppauge and STB TV-cards.
1190
1191 The card needs to be physically altered for using it as a
1192 GPIO card. For more information on how to build a GPIO card
1193 from a BT8xx TV card, see the documentation file at
1194 Documentation/bt8xxgpio.txt
1195
1196 If unsure, say N.
1197
1198config GPIO_INTEL_MID
1199 bool "Intel MID GPIO support"
1200 depends on X86_INTEL_MID
1201 select GPIOLIB_IRQCHIP
1202 help
1203 Say Y here to support Intel MID GPIO.
1204
1205config GPIO_MERRIFIELD
1206 tristate "Intel Merrifield GPIO support"
1207 depends on X86_INTEL_MID
1208 select GPIOLIB_IRQCHIP
1209 help
1210 Say Y here to support Intel Merrifield GPIO.
1211
1212config GPIO_ML_IOH
1213 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1214 depends on X86 || COMPILE_TEST
1215 select GENERIC_IRQ_CHIP
1216 help
1217 ML7213 is companion chip for Intel Atom E6xx series.
1218 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1219 Hub) which is for IVI(In-Vehicle Infotainment) use.
1220 This driver can access the IOH's GPIO device.
1221
1222config GPIO_PCH
1223 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1224 depends on X86_32 || MIPS || COMPILE_TEST
1225 select GENERIC_IRQ_CHIP
1226 help
1227 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1228 which is an IOH(Input/Output Hub) for x86 embedded processor.
1229 This driver can access PCH GPIO device.
1230
1231 This driver also can be used for LAPIS Semiconductor IOH(Input/
1232 Output Hub), ML7223 and ML7831.
1233 ML7223 IOH is for MP(Media Phone) use.
1234 ML7831 IOH is for general purpose use.
1235 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1236 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1237
1238config GPIO_PCI_IDIO_16
1239 tristate "ACCES PCI-IDIO-16 GPIO support"
1240 select GPIOLIB_IRQCHIP
1241 help
1242 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1243 generated when any of the inputs change state (low to high or high to
1244 low). Input filter control is not supported by this driver, and the
1245 input filters are deactivated by this driver.
1246
1247config GPIO_PCIE_IDIO_24
1248 tristate "ACCES PCIe-IDIO-24 GPIO support"
1249 select GPIOLIB_IRQCHIP
1250 help
1251 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1252 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1253 when any of the inputs change state (low to high or high to low).
1254 Input filter control is not supported by this driver, and the input
1255 filters are deactivated by this driver.
1256
1257config GPIO_RDC321X
1258 tristate "RDC R-321x GPIO support"
1259 select MFD_CORE
1260 select MFD_RDC321X
1261 help
1262 Support for the RDC R321x SoC GPIOs over southbridge
1263 PCI configuration space.
1264
1265config GPIO_SODAVILLE
1266 bool "Intel Sodaville GPIO support"
1267 depends on X86 && OF
1268 select GPIO_GENERIC
1269 select GENERIC_IRQ_CHIP
1270 help
1271 Say Y here to support Intel Sodaville GPIO.
1272
1273endmenu
1274
1275menu "SPI GPIO expanders"
1276 depends on SPI_MASTER
1277
1278config GPIO_74X164
1279 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1280 depends on OF_GPIO
1281 help
1282 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1283 shift registers. This driver can be used to provide access
1284 to more gpio outputs.
1285
1286config GPIO_MAX3191X
1287 tristate "Maxim MAX3191x industrial serializer"
1288 select CRC8
1289 help
1290 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1291 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1292 chip to make 8 digital 24V inputs available via SPI. Supports
1293 CRC checksums to guard against electromagnetic interference,
1294 as well as undervoltage and overtemperature detection.
1295
1296config GPIO_MAX7301
1297 tristate "Maxim MAX7301 GPIO expander"
1298 select GPIO_MAX730X
1299 help
1300 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1301
1302config GPIO_MC33880
1303 tristate "Freescale MC33880 high-side/low-side switch"
1304 help
1305 SPI driver for Freescale MC33880 high-side/low-side switch.
1306 This provides GPIO interface supporting inputs and outputs.
1307
1308config GPIO_PISOSR
1309 tristate "Generic parallel-in/serial-out shift register"
1310 help
1311 GPIO driver for SPI compatible parallel-in/serial-out shift
1312 registers. These are input only devices.
1313
1314config GPIO_XRA1403
1315 tristate "EXAR XRA1403 16-bit GPIO expander"
1316 select REGMAP_SPI
1317 help
1318 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1319
1320endmenu
1321
1322menu "USB GPIO expanders"
1323 depends on USB
1324
1325config GPIO_VIPERBOARD
1326 tristate "Viperboard GPIO a & b support"
1327 depends on MFD_VIPERBOARD
1328 help
1329 Say yes here to access the GPIO signals of Nano River
1330 Technologies Viperboard. There are two GPIO chips on the
1331 board: gpioa and gpiob.
1332 See viperboard API specification and Nano
1333 River Tech's viperboard.h for detailed meaning
1334 of the module parameters.
1335
1336endmenu
1337
1338endif