tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# GPIO infrastructure and drivers
4#
5
6config GPIOLIB_LEGACY
7 def_bool y
8
9menuconfig GPIOLIB
10 bool "GPIO Support"
11 help
12 This enables GPIO support through the generic GPIO library.
13 You only need to enable this if you also want to enable
14 one or more of the GPIO drivers below.
15
16 If unsure, say N.
17
18if GPIOLIB
19
20config GPIOLIB_FASTPATH_LIMIT
21 int "Maximum number of GPIOs for fast path"
22 range 32 512
23 default 512
24 help
25 This adjusts the point at which certain APIs will switch from
26 using a stack allocated buffer to a dynamically allocated buffer.
27
28 You shouldn't need to change this unless you really need to
29 optimize either stack space or performance. Change this carefully
30 since setting an incorrect value could cause stack corruption.
31
32config OF_GPIO
33 def_bool y
34 depends on OF
35 depends on HAS_IOMEM
36
37config GPIO_ACPI
38 def_bool y
39 depends on ACPI
40
41config GPIOLIB_IRQCHIP
42 select IRQ_DOMAIN
43 bool
44
45config OF_GPIO_MM_GPIOCHIP
46 bool
47 help
48 This adds support for the legacy 'struct of_mm_gpio_chip' interface
49 from PowerPC. Existing drivers using this interface need to select
50 this symbol, but new drivers should use the generic gpio-regmap
51 infrastructure instead.
52
53config DEBUG_GPIO
54 bool "Debug GPIO calls"
55 depends on DEBUG_KERNEL
56 help
57 Say Y here to add some extra checks and diagnostics to GPIO calls.
58 These checks help ensure that GPIOs have been properly initialized
59 before they are used, and that sleeping calls are not made from
60 non-sleeping contexts. They can make bitbanged serial protocols
61 slower. The diagnostics help catch the type of setup errors
62 that are most common when setting up new platforms or boards.
63
64config GPIO_SYSFS
65 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
66 depends on SYSFS
67 select GPIO_CDEV # We need to encourage the new ABI
68 help
69 Say Y here to add the legacy sysfs interface for GPIOs.
70
71 This ABI is deprecated. If you want to use GPIO from userspace,
72 use the character device /dev/gpiochipN with the appropriate
73 ioctl() operations instead.
74
75config GPIO_SYSFS_LEGACY
76 bool "Enable legacy functionalities of the sysfs interface"
77 depends on GPIO_SYSFS
78 default y if GPIO_SYSFS
79 help
80 Say Y here if you want to enable the legacy, global GPIO
81 numberspace-based functionalities of the sysfs interface.
82
83config GPIO_CDEV
84 bool "Character device (/dev/gpiochipN) support" if EXPERT
85 default y
86 help
87 Say Y here to add the character device /dev/gpiochipN interface
88 for GPIOs. The character device allows userspace to control GPIOs
89 using ioctl() operations.
90
91 Only say N if you are sure that the GPIO character device is not
92 required.
93
94 If unsure, say Y.
95
96config GPIO_CDEV_V1
97 bool "Support GPIO ABI Version 1"
98 default y
99 depends on GPIO_CDEV
100 help
101 Say Y here to support version 1 of the GPIO CDEV ABI.
102
103 This ABI version is deprecated.
104 Please use the latest ABI for new developments.
105
106 If unsure, say Y.
107
108config GPIO_GENERIC
109 depends on HAS_IOMEM # Only for IOMEM drivers
110 tristate
111
112config GPIO_REGMAP
113 select REGMAP
114 tristate
115
116config GPIO_SWNODE_UNDEFINED
117 bool
118 help
119 This adds a special place holder for software nodes to contain an
120 undefined GPIO reference, this is primarily used by SPI to allow a
121 list of GPIO chip selects to mark a certain chip select as being
122 controlled the SPI device's internal chip select mechanism and not
123 a GPIO.
124
125# put drivers in the right section, in alphabetical order
126
127# This symbol is selected by both I2C and SPI expanders
128config GPIO_MAX730X
129 tristate
130
131config GPIO_IDIO_16
132 tristate
133 select REGMAP_IRQ
134 select GPIOLIB_IRQCHIP
135 select GPIO_REGMAP
136 help
137 Enables support for the idio-16 library functions. The idio-16 library
138 provides functions to facilitate communication with devices within the
139 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
140
141 If built as a module its name will be gpio-idio-16.
142
143menu "Memory mapped GPIO drivers"
144 depends on HAS_IOMEM
145
146config GPIO_74XX_MMIO
147 tristate "GPIO driver for 74xx-ICs with MMIO access"
148 depends on OF_GPIO
149 select GPIO_GENERIC
150 help
151 Say yes here to support GPIO functionality for 74xx-compatible ICs
152 with MMIO access. Compatible models include:
153 1 bit: 741G125 (Input), 741G74 (Output)
154 2 bits: 742G125 (Input), 7474 (Output)
155 4 bits: 74125 (Input), 74175 (Output)
156 6 bits: 74365 (Input), 74174 (Output)
157 8 bits: 74244 (Input), 74273 (Output)
158 16 bits: 741624 (Input), 7416374 (Output)
159
160config GPIO_ALTERA
161 tristate "Altera GPIO"
162 select GPIOLIB_IRQCHIP
163 help
164 Say Y or M here to build support for the Altera PIO device.
165
166 If driver is built as a module it will be called gpio-altera.
167
168config GPIO_AMDPT
169 tristate "AMD Promontory GPIO support"
170 depends on ACPI
171 select GPIO_GENERIC
172 help
173 Driver for GPIO functionality on Promontory IOHub.
174 Requires ACPI ASL code to enumerate as a platform device.
175
176config GPIO_ASPEED
177 tristate "Aspeed GPIO support"
178 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
179 select GPIOLIB_IRQCHIP
180 help
181 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
182
183config GPIO_ASPEED_SGPIO
184 bool "Aspeed SGPIO support"
185 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
186 select GPIO_GENERIC
187 select GPIOLIB_IRQCHIP
188 help
189 Say Y here to support Aspeed AST2500 SGPIO functionality.
190
191config GPIO_ATH79
192 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
193 default y if ATH79
194 depends on ATH79 || COMPILE_TEST
195 select GPIO_GENERIC
196 select GPIOLIB_IRQCHIP
197 help
198 Select this option to enable GPIO driver for
199 Atheros AR71XX/AR724X/AR913X SoC devices.
200
201config GPIO_RASPBERRYPI_EXP
202 tristate "Raspberry Pi 3 GPIO Expander"
203 default RASPBERRYPI_FIRMWARE
204 depends on OF_GPIO
205 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
206 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
207 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
208 help
209 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
210 the firmware mailbox to communicate with VideoCore on BCM283x chips.
211
212config GPIO_BCM_KONA
213 bool "Broadcom Kona GPIO"
214 depends on ARCH_BCM_MOBILE || COMPILE_TEST
215 select GPIOLIB_IRQCHIP
216 help
217 Turn on GPIO support for Broadcom "Kona" chips.
218
219config GPIO_BCM_XGS_IPROC
220 tristate "BRCM XGS iProc GPIO support"
221 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
222 select GPIO_GENERIC
223 select GPIOLIB_IRQCHIP
224 default ARCH_BCM_IPROC
225 help
226 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
227
228config GPIO_BLZP1600
229 tristate "Blaize BLZP1600 GPIO support"
230 default y if ARCH_BLAIZE
231 depends on ARCH_BLAIZE || COMPILE_TEST
232 depends on OF_GPIO
233 select GPIO_GENERIC
234 select GPIOLIB_IRQCHIP
235 help
236 Say Y or M here to add support for the Blaize BLZP1600 GPIO device.
237 The controller is based on the Verisilicon Microelectronics GPIO APB v0.2
238 IP block.
239
240config GPIO_BRCMSTB
241 tristate "BRCMSTB GPIO support"
242 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
243 depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST)
244 select GPIO_GENERIC
245 select IRQ_DOMAIN
246 help
247 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
248
249config GPIO_CADENCE
250 tristate "Cadence GPIO support"
251 depends on OF_GPIO
252 select GPIO_GENERIC
253 select GPIOLIB_IRQCHIP
254 help
255 Say yes here to enable support for Cadence GPIO controller.
256
257config GPIO_CLPS711X
258 tristate "CLPS711X GPIO support"
259 depends on ARCH_CLPS711X || COMPILE_TEST
260 select GPIO_GENERIC
261 help
262 Say yes here to support GPIO on CLPS711X SoCs.
263
264config GPIO_DAVINCI
265 tristate "TI Davinci/Keystone GPIO support"
266 default y if ARCH_DAVINCI
267 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
268 select GPIOLIB_IRQCHIP
269 help
270 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
271
272config GPIO_DWAPB
273 tristate "Synopsys DesignWare APB GPIO driver"
274 select GPIO_GENERIC
275 select GPIOLIB_IRQCHIP
276 help
277 Say Y or M here to build support for the Synopsys DesignWare APB
278 GPIO block.
279
280config GPIO_EIC_SPRD
281 tristate "Spreadtrum EIC support"
282 depends on ARCH_SPRD || COMPILE_TEST
283 depends on OF_GPIO
284 select GPIOLIB_IRQCHIP
285 help
286 Say yes here to support Spreadtrum EIC device.
287
288config GPIO_EM
289 tristate "Emma Mobile GPIO"
290 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
291 help
292 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
293
294config GPIO_EN7523
295 tristate "Airoha GPIO support"
296 depends on ARCH_AIROHA
297 default ARCH_AIROHA
298 select GPIO_GENERIC
299 select GPIOLIB_IRQCHIP
300 help
301 Say Y or M here to support the GPIO controller block on the
302 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
303
304config GPIO_EP93XX
305 def_bool y
306 depends on ARCH_EP93XX || COMPILE_TEST
307 select GPIO_GENERIC
308 select GPIOLIB_IRQCHIP
309
310config GPIO_EXAR
311 tristate "Support for GPIO pins on XR17V352/354/358"
312 depends on SERIAL_8250_EXAR
313 select REGMAP_MMIO
314 help
315 Selecting this option will enable handling of GPIO pins present
316 on Exar XR17V352/354/358 chips.
317
318config GPIO_GE_FPGA
319 bool "GE FPGA based GPIO"
320 depends on GE_FPGA || COMPILE_TEST
321 select GPIO_GENERIC
322 help
323 Support for common GPIO functionality provided on some GE Single Board
324 Computers.
325
326 This driver provides basic support (configure as input or output, read
327 and write pin state) for GPIO implemented in a number of GE single
328 board computers.
329
330config GPIO_FTGPIO010
331 bool "Faraday FTGPIO010 GPIO"
332 depends on OF_GPIO
333 select GPIO_GENERIC
334 select GPIOLIB_IRQCHIP
335 default (ARCH_GEMINI || ARCH_MOXART)
336 help
337 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
338 Cortina systems Gemini platforms, Moxa ART and others.
339
340config GPIO_GENERIC_PLATFORM
341 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
342 select GPIO_GENERIC
343 help
344 Say yes here to support basic platform_device memory-mapped GPIO controllers.
345
346config GPIO_GRANITERAPIDS
347 tristate "Intel Granite Rapids-D vGPIO support"
348 depends on X86 || COMPILE_TEST
349 select GPIOLIB_IRQCHIP
350 help
351 Select this to enable virtual GPIO support on platforms with the
352 following SoCs:
353
354 - Intel Granite Rapids-D
355
356 The driver enables basic GPIO functionality and implements interrupt
357 support. The virtual GPIO driver controls GPIO lines via a firmware
358 interface. The physical GPIO pins reside on device that is external
359 from the main SoC package, such as a BMC or a CPLD.
360
361 To compile this driver as a module, choose M here: the module will
362 be called gpio-graniterapids.
363
364config GPIO_GRGPIO
365 tristate "Aeroflex Gaisler GRGPIO support"
366 depends on OF || COMPILE_TEST
367 select GPIO_GENERIC
368 select GPIOLIB_IRQCHIP
369 help
370 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
371 VHDL IP core library.
372
373config GPIO_HISI
374 tristate "HiSilicon GPIO controller driver"
375 depends on ARM64 || COMPILE_TEST
376 select GPIO_GENERIC
377 select GPIOLIB_IRQCHIP
378 help
379 Say Y or M here to build support for the HiSilicon GPIO controller
380 driver GPIO block.
381 This GPIO controller supports double-edge interrupt and multi-core
382 concurrent access.
383
384config GPIO_HLWD
385 tristate "Nintendo Wii (Hollywood) GPIO"
386 depends on OF_GPIO
387 select GPIO_GENERIC
388 select GPIOLIB_IRQCHIP
389 help
390 Select this to support the GPIO controller of the Nintendo Wii.
391
392 If unsure, say N.
393
394config GPIO_ICH
395 tristate "Intel ICH GPIO"
396 depends on (X86 && LPC_ICH) || (COMPILE_TEST && HAS_IOPORT)
397 help
398 Say yes here to support the GPIO functionality of a number of Intel
399 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
400 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
401 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
402
403 If unsure, say N.
404
405config GPIO_IMX_SCU
406 def_bool y
407 depends on IMX_SCU
408
409config GPIO_IXP4XX
410 bool "Intel IXP4xx GPIO"
411 depends on (ARCH_IXP4XX && OF) || COMPILE_TEST
412 select GPIO_GENERIC
413 select GPIOLIB_IRQCHIP
414 select IRQ_DOMAIN_HIERARCHY
415 help
416 Say yes here to support the GPIO functionality of a number of Intel
417 IXP4xx series of chips.
418
419 If unsure, say N.
420
421config GPIO_LOGICVC
422 tristate "Xylon LogiCVC GPIO support"
423 depends on MFD_SYSCON && OF
424 help
425 Say yes here to support GPIO functionality of the Xylon LogiCVC
426 programmable logic block.
427
428config GPIO_LOONGSON
429 bool "Loongson-2/3 GPIO support"
430 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
431 help
432 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
433
434config GPIO_LOONGSON_64BIT
435 tristate "Loongson 64 bit GPIO support"
436 depends on LOONGARCH || COMPILE_TEST
437 depends on OF_GPIO
438 select GPIO_GENERIC
439 select GPIOLIB_IRQCHIP
440 help
441 Say yes here to support the GPIO functionality of a number of
442 Loongson series of chips. The Loongson GPIO controller supports
443 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
444 the remaining 56 are reused with other functions, with edge or
445 level triggered interrupts.
446
447config GPIO_LPC18XX
448 tristate "NXP LPC18XX/43XX GPIO support"
449 default y if ARCH_LPC18XX
450 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
451 select IRQ_DOMAIN_HIERARCHY
452 select GPIOLIB_IRQCHIP
453 help
454 Select this option to enable GPIO driver for
455 NXP LPC18XX/43XX devices.
456
457config GPIO_LPC32XX
458 tristate "NXP LPC32XX GPIO support"
459 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
460 help
461 Select this option to enable GPIO driver for
462 NXP LPC32XX devices.
463
464config GPIO_MB86S7X
465 tristate "GPIO support for Fujitsu MB86S7x Platforms"
466 help
467 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
468
469config GPIO_MENZ127
470 tristate "MEN 16Z127 GPIO support"
471 depends on MCB
472 select GPIO_GENERIC
473 help
474 Say yes here to support the MEN 16Z127 GPIO Controller.
475
476config GPIO_MM_LANTIQ
477 bool "Lantiq Memory mapped GPIOs"
478 depends on LANTIQ && SOC_XWAY
479 select OF_GPIO_MM_GPIOCHIP
480 help
481 This enables support for memory mapped GPIOs on the External Bus Unit
482 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
483 created by attaching a 16-bit latch to the bus.
484
485config GPIO_MPC5200
486 def_bool y
487 depends on PPC_MPC52xx
488
489config GPIO_MPC8XXX
490 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
491 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
492 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
493 COMPILE_TEST
494 select GPIO_GENERIC
495 select GPIOLIB_IRQCHIP
496 help
497 Say Y here if you're going to use hardware that connects to the
498 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
499
500config GPIO_MT7621
501 bool "Mediatek MT7621 GPIO Support"
502 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
503 depends on OF_GPIO
504 select GPIO_GENERIC
505 select GPIOLIB_IRQCHIP
506 help
507 Say yes here to support the Mediatek MT7621 SoC GPIO device.
508
509config GPIO_MVEBU
510 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
511 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
512 default PLAT_ORION || ARCH_MVEBU
513 select GENERIC_IRQ_CHIP
514 select REGMAP_MMIO
515
516config GPIO_MXC
517 tristate "i.MX GPIO support"
518 depends on ARCH_MXC || COMPILE_TEST
519 select GPIO_GENERIC
520 select GENERIC_IRQ_CHIP
521
522config GPIO_MXS
523 bool "Freescale MXS GPIO support" if COMPILE_TEST
524 depends on ARCH_MXS || COMPILE_TEST
525 default y if ARCH_MXS
526 select GPIO_GENERIC
527 select GENERIC_IRQ_CHIP
528
529config GPIO_NOMADIK
530 bool "Nomadik GPIO driver"
531 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
532 select GPIOLIB_IRQCHIP
533 help
534 Say yes here to support the Nomadik SoC GPIO block. This block is also
535 used by the Mobileye EyeQ5 SoC.
536
537 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
538 It is deeply interconnected with the associated pinctrl driver as GPIO
539 registers handle muxing ("alternate functions") as well.
540
541config GPIO_NPCM_SGPIO
542 bool "Nuvoton SGPIO support"
543 depends on ARCH_NPCM || COMPILE_TEST
544 select GPIOLIB_IRQCHIP
545 help
546 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
547
548config GPIO_OCTEON
549 tristate "Cavium OCTEON GPIO"
550 depends on CAVIUM_OCTEON_SOC
551 default y
552 help
553 Say yes here to support the on-chip GPIO lines on the OCTEON
554 family of SOCs.
555
556config GPIO_OMAP
557 tristate "TI OMAP GPIO support"
558 depends on ARCH_OMAP || COMPILE_TEST
559 default y if ARCH_OMAP
560 select GENERIC_IRQ_CHIP
561 select GPIOLIB_IRQCHIP
562 help
563 Say yes here to enable GPIO support for TI OMAP SoCs.
564
565config GPIO_PL061
566 tristate "PrimeCell PL061 GPIO support"
567 depends on ARM_AMBA || COMPILE_TEST
568 select IRQ_DOMAIN
569 select GPIOLIB_IRQCHIP
570 help
571 Say yes here to support the PrimeCell PL061 GPIO device.
572
573config GPIO_POLARFIRE_SOC
574 bool "Microchip FPGA GPIO support"
575 select REGMAP_MMIO
576 help
577 Say yes here to support the GPIO controllers on Microchip FPGAs.
578
579config GPIO_PXA
580 bool "PXA GPIO support"
581 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
582 select GPIOLIB_IRQCHIP
583 help
584 Say yes here to support the PXA GPIO device.
585
586config GPIO_RCAR
587 tristate "Renesas R-Car and RZ/G GPIO support"
588 depends on ARCH_RENESAS || COMPILE_TEST
589 select GPIOLIB_IRQCHIP
590 help
591 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
592
593config GPIO_RDA
594 bool "RDA Micro GPIO controller support"
595 depends on ARCH_RDA || COMPILE_TEST
596 depends on OF_GPIO
597 select GPIO_GENERIC
598 select GPIOLIB_IRQCHIP
599 help
600 Say Y here to support RDA Micro GPIO controller.
601
602config GPIO_REALTEK_OTTO
603 tristate "Realtek Otto GPIO support"
604 depends on MACH_REALTEK_RTL
605 default MACH_REALTEK_RTL
606 select GPIO_GENERIC
607 select GPIOLIB_IRQCHIP
608 help
609 The GPIO controller on the Otto MIPS platform supports up to two
610 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
611 are grouped in four 8-bit wide ports.
612
613 When built as a module, the module will be called realtek_otto_gpio.
614
615config GPIO_REG
616 bool
617 help
618 A 32-bit single register GPIO fixed in/out implementation. This
619 can be used to represent any register as a set of GPIO signals.
620
621config GPIO_ROCKCHIP
622 tristate "Rockchip GPIO support"
623 depends on ARCH_ROCKCHIP || COMPILE_TEST
624 select GENERIC_IRQ_CHIP
625 select GPIOLIB_IRQCHIP
626 default ARCH_ROCKCHIP
627 help
628 Say yes here to support GPIO on Rockchip SoCs.
629
630config GPIO_RTD
631 tristate "Realtek DHC GPIO support"
632 depends on ARCH_REALTEK || COMPILE_TEST
633 default y
634 select GPIOLIB_IRQCHIP
635 help
636 This option enables support for GPIOs found on Realtek DHC(Digital
637 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
638 RTD1319D, RTD1395, RTD1619 and RTD1619B.
639
640 Say yes here to support GPIO functionality and GPIO interrupt on
641 Realtek DHC SoCs.
642
643config GPIO_SAMA5D2_PIOBU
644 tristate "SAMA5D2 PIOBU GPIO support"
645 depends on MFD_SYSCON
646 depends on OF_GPIO
647 depends on ARCH_AT91 || COMPILE_TEST
648 select GPIO_SYSCON
649 help
650 Say yes here to use the PIOBU pins as GPIOs.
651
652 PIOBU pins on the SAMA5D2 can be used as GPIOs.
653 The difference from regular GPIOs is that they
654 maintain their value during backup/self-refresh.
655
656config GPIO_SIFIVE
657 tristate "SiFive GPIO support"
658 depends on OF_GPIO
659 select IRQ_DOMAIN_HIERARCHY
660 select GPIO_GENERIC
661 select GPIOLIB_IRQCHIP
662 select REGMAP_MMIO
663 help
664 Say yes here to support the GPIO device on SiFive SoCs.
665
666config GPIO_SIOX
667 tristate "SIOX GPIO support"
668 depends on SIOX
669 select GPIOLIB_IRQCHIP
670 help
671 Say yes here to support SIOX I/O devices. These are units connected
672 via a SIOX bus and have a number of fixed-direction I/O lines.
673
674config GPIO_SNPS_CREG
675 bool "Synopsys GPIO via CREG (Control REGisters) driver"
676 depends on ARC || COMPILE_TEST
677 depends on OF_GPIO
678 help
679 This driver supports GPIOs via CREG on various Synopsys SoCs.
680 This is a single-register MMIO GPIO driver for complex cases
681 where only several fields in register belong to GPIO lines and
682 each GPIO line owns a field with different length and on/off value.
683
684config GPIO_SPACEMIT_K1
685 tristate "SPACEMIT K1 GPIO support"
686 depends on ARCH_SPACEMIT || COMPILE_TEST
687 depends on OF_GPIO
688 select GPIO_GENERIC
689 select GPIOLIB_IRQCHIP
690 help
691 Say yes here to support the SpacemiT's K1 GPIO device.
692
693config GPIO_SPEAR_SPICS
694 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
695 depends on PLAT_SPEAR
696 select GENERIC_IRQ_CHIP
697 help
698 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
699
700config GPIO_SPRD
701 tristate "Spreadtrum GPIO support"
702 depends on ARCH_SPRD || COMPILE_TEST
703 depends on OF_GPIO
704 select GPIOLIB_IRQCHIP
705 help
706 Say yes here to support Spreadtrum GPIO device.
707
708config GPIO_STP_XWAY
709 bool "XWAY STP GPIOs"
710 depends on SOC_XWAY || COMPILE_TEST
711 depends on OF_GPIO
712 help
713 This enables support for the Serial To Parallel (STP) unit found on
714 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
715 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
716 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
717 phy status.
718
719config GPIO_SYSCON
720 tristate "GPIO based on SYSCON"
721 depends on MFD_SYSCON && OF
722 help
723 Say yes here to support GPIO functionality though SYSCON driver.
724
725config GPIO_TANGIER
726 tristate
727 select GPIOLIB_IRQCHIP
728 help
729 GPIO support for Intel Tangier and compatible platforms.
730 Currently supported:
731 - Elkhart Lake
732 - Merrifield
733
734 If built as a module its name will be gpio-tangier.
735
736config GPIO_TB10X
737 bool "Abilis Systems TB10x GPIO controller"
738 depends on ARC_PLAT_TB10X || COMPILE_TEST
739 select GPIO_GENERIC
740 select GENERIC_IRQ_CHIP
741 select OF_GPIO
742
743config GPIO_TEGRA
744 tristate "NVIDIA Tegra GPIO support"
745 default ARCH_TEGRA
746 depends on ARCH_TEGRA || COMPILE_TEST
747 depends on OF_GPIO
748 select GPIOLIB_IRQCHIP
749 select IRQ_DOMAIN_HIERARCHY
750 help
751 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
752
753config GPIO_TEGRA186
754 tristate "NVIDIA Tegra186 GPIO support"
755 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
756 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
757 depends on OF_GPIO
758 select GPIOLIB_IRQCHIP
759 select IRQ_DOMAIN_HIERARCHY
760 help
761 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
762
763config GPIO_TS4800
764 tristate "TS-4800 DIO blocks and compatibles"
765 depends on OF_GPIO
766 depends on SOC_IMX51 || COMPILE_TEST
767 select GPIO_GENERIC
768 help
769 This driver support TS-4800 FPGA GPIO controllers.
770
771config GPIO_THUNDERX
772 tristate "Cavium ThunderX/OCTEON-TX GPIO"
773 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
774 depends on PCI_MSI
775 select GPIOLIB_IRQCHIP
776 select IRQ_DOMAIN_HIERARCHY
777 select IRQ_FASTEOI_HIERARCHY_HANDLERS
778 help
779 Say yes here to support the on-chip GPIO lines on the ThunderX
780 and OCTEON-TX families of SoCs.
781
782config GPIO_UNIPHIER
783 tristate "UniPhier GPIO support"
784 depends on ARCH_UNIPHIER || COMPILE_TEST
785 depends on OF_GPIO
786 select IRQ_DOMAIN_HIERARCHY
787 help
788 Say yes here to support UniPhier GPIOs.
789
790config GPIO_VF610
791 tristate "VF610 GPIO support"
792 default y if SOC_VF610
793 depends on ARCH_MXC || COMPILE_TEST
794 select GPIOLIB_IRQCHIP
795 select GPIO_GENERIC
796 help
797 Say yes here to support i.MX or Vybrid vf610 GPIOs.
798
799config GPIO_VISCONTI
800 tristate "Toshiba Visconti GPIO support"
801 depends on ARCH_VISCONTI || COMPILE_TEST
802 depends on OF_GPIO
803 select GPIOLIB_IRQCHIP
804 select GPIO_GENERIC
805 select IRQ_DOMAIN_HIERARCHY
806 help
807 Say yes here to support GPIO on Tohisba Visconti.
808
809config GPIO_WCD934X
810 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
811 depends on MFD_WCD934X && OF_GPIO
812 help
813 This driver is to support GPIO block found on the Qualcomm Technologies
814 Inc WCD9340/WCD9341 Audio Codec.
815
816config GPIO_XGENE
817 bool "APM X-Gene GPIO controller support"
818 depends on ARM64 && OF_GPIO
819 help
820 This driver is to support the GPIO block within the APM X-Gene SoC
821 platform's generic flash controller. The GPIO pins are muxed with
822 the generic flash controller's address and data pins. Say yes
823 here to enable the GFC GPIO functionality.
824
825config GPIO_XGENE_SB
826 tristate "APM X-Gene GPIO standby controller support"
827 depends on (ARCH_XGENE || COMPILE_TEST)
828 select GPIO_GENERIC
829 select GPIOLIB_IRQCHIP
830 select IRQ_DOMAIN_HIERARCHY
831 help
832 This driver supports the GPIO block within the APM X-Gene
833 Standby Domain. Say yes here to enable the GPIO functionality.
834
835config GPIO_XILINX
836 tristate "Xilinx GPIO support"
837 select GPIOLIB_IRQCHIP
838 help
839 Say yes here to support the Xilinx FPGA GPIO device.
840
841config GPIO_XLP
842 tristate "Cavium ThunderX2 GPIO support"
843 depends on ARCH_THUNDER2 || COMPILE_TEST
844 select GPIOLIB_IRQCHIP
845 help
846 This driver provides support for GPIO interface on Cavium's ThunderX2
847 CN99XX SoCs (Originally from Netlogic XLP).
848
849 If unsure, say N.
850
851config GPIO_XTENSA
852 bool "Xtensa GPIO32 support"
853 depends on XTENSA
854 depends on HAVE_XTENSA_GPIO32
855 depends on !SMP
856 help
857 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
858 and EXPSTATE (output) ports.
859
860config GPIO_ZEVIO
861 bool "LSI ZEVIO SoC memory mapped GPIOs"
862 depends on ARM
863 help
864 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
865
866config GPIO_ZYNQ
867 tristate "Xilinx Zynq GPIO support"
868 depends on ARCH_ZYNQ || ARCH_ZYNQMP || COMPILE_TEST
869 select GPIOLIB_IRQCHIP
870 help
871 Say yes here to support Xilinx Zynq GPIO controller.
872
873config GPIO_ZYNQMP_MODEPIN
874 tristate "ZynqMP ps-mode pin GPIO configuration driver"
875 depends on ZYNQMP_FIRMWARE || COMPILE_TEST
876 default ZYNQMP_FIRMWARE
877 help
878 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
879 driver.
880
881 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
882 is 4-bits boot mode pins. It sets and gets the status of
883 the ps-mode pin. Every pin can be configured as input/output.
884
885config GPIO_LOONGSON1
886 tristate "Loongson1 GPIO support"
887 depends on MACH_LOONGSON32 || COMPILE_TEST
888 select GPIO_GENERIC
889 help
890 Say Y or M here to support GPIO on Loongson1 SoCs.
891
892config GPIO_AMD_FCH
893 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
894 help
895 This option enables driver for GPIO on AMD's Fusion Controller Hub,
896 as found on G-series SOCs (e.g. GX-412TC).
897
898 Note: This driver doesn't register itself automatically, as it
899 needs to be provided with platform-specific configuration.
900 (See e.g. CONFIG_PCENGINES_APU2.)
901
902config GPIO_MSC313
903 bool "MStar MSC313 GPIO support"
904 depends on ARCH_MSTARV7 || COMPILE_TEST
905 default ARCH_MSTARV7
906 select GPIOLIB_IRQCHIP
907 select IRQ_DOMAIN_HIERARCHY
908 help
909 Say Y here to support the main GPIO block on MStar/SigmaStar
910 ARMv7-based SoCs.
911
912config GPIO_IDT3243X
913 tristate "IDT 79RC3243X GPIO support"
914 depends on MIKROTIK_RB532 || COMPILE_TEST
915 select GPIO_GENERIC
916 select GPIOLIB_IRQCHIP
917 help
918 Select this option to enable GPIO driver for
919 IDT 79RC3243X-based devices like Mikrotik RB532.
920
921 To compile this driver as a module, choose M here: the module will
922 be called gpio-idt3243x.
923
924endmenu
925
926menu "Port-mapped I/O GPIO drivers"
927 depends on X86 && HAS_IOPORT # I/O space access
928
929config GPIO_VX855
930 tristate "VIA VX855/VX875 GPIO"
931 depends on PCI
932 select MFD_CORE
933 select MFD_VX855
934 help
935 Support access to the VX855/VX875 GPIO lines through the GPIO library.
936
937 This driver provides common support for accessing the device.
938 Additional drivers must be enabled in order to use the
939 functionality of the device.
940
941config GPIO_I8255
942 tristate
943 select GPIO_REGMAP
944 help
945 Enables support for the i8255 interface library functions. The i8255
946 interface library provides functions to facilitate communication with
947 interfaces compatible with the venerable Intel 8255 Programmable
948 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
949 in the early 1970s but compatible interfaces are nowadays typically
950 found embedded in larger VLSI processing chips and FPGA components.
951
952 If built as a module its name will be gpio-i8255.
953
954config GPIO_104_DIO_48E
955 tristate "ACCES 104-DIO-48E GPIO support"
956 depends on PC104
957 select ISA_BUS_API
958 select REGMAP_MMIO
959 select REGMAP_IRQ
960 select GPIOLIB_IRQCHIP
961 select GPIO_I8255
962 select I8254
963 help
964 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
965 104-DIO-24E). The base port addresses for the devices may be
966 configured via the base module parameter. The interrupt line numbers
967 for the devices may be configured via the irq module parameter.
968
969config GPIO_104_IDIO_16
970 tristate "ACCES 104-IDIO-16 GPIO support"
971 depends on PC104
972 select ISA_BUS_API
973 select REGMAP_MMIO
974 select GPIO_IDIO_16
975 help
976 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
977 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
978 base port addresses for the devices may be configured via the base
979 module parameter. The interrupt line numbers for the devices may be
980 configured via the irq module parameter.
981
982config GPIO_104_IDI_48
983 tristate "ACCES 104-IDI-48 GPIO support"
984 depends on PC104
985 select ISA_BUS_API
986 select REGMAP_MMIO
987 select REGMAP_IRQ
988 select GPIOLIB_IRQCHIP
989 select GPIO_REGMAP
990 help
991 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
992 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
993 the devices may be configured via the base module parameter. The
994 interrupt line numbers for the devices may be configured via the irq
995 module parameter.
996
997config GPIO_F7188X
998 tristate "Fintek and Nuvoton Super-I/O GPIO support"
999 help
1000 This option enables support for GPIOs found on Fintek Super-I/O
1001 chips F71869, F71869A, F71882FG, F71889F and F81866.
1002 As well as Nuvoton Super-I/O chip NCT6126D.
1003
1004 To compile this driver as a module, choose M here: the module will
1005 be called f7188x-gpio.
1006
1007config GPIO_GPIO_MM
1008 tristate "Diamond Systems GPIO-MM GPIO support"
1009 depends on PC104
1010 select ISA_BUS_API
1011 select REGMAP_MMIO
1012 select GPIO_I8255
1013 help
1014 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
1015
1016 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
1017 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
1018 support for these 48 channels of digital I/O.
1019
1020 The base port addresses for the devices may be configured via the base
1021 array module parameter.
1022
1023config GPIO_IT87
1024 tristate "IT87xx GPIO support"
1025 help
1026 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
1027
1028 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
1029 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
1030 well.
1031
1032 To compile this driver as a module, choose M here: the module will
1033 be called gpio_it87.
1034
1035config GPIO_SCH
1036 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1037 depends on (X86 || COMPILE_TEST) && ACPI
1038 depends on LPC_SCH
1039 select GPIOLIB_IRQCHIP
1040 help
1041 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1042 Intel Tunnel Creek processor, Intel Centerton processor or
1043 Intel Quark X1000 SoC.
1044
1045 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1046 powered by the core power rail and are turned off during sleep
1047 modes (S3 and higher). The remaining four GPIOs are powered by
1048 the Intel SCH suspend power supply. These GPIOs remain
1049 active during S3. The suspend-powered GPIOs can be used to wake the
1050 system from the Suspend-to-RAM state.
1051
1052 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1053 core power rail and 9 from suspend power supply.
1054
1055 The Intel Centerton processor has a total of 30 GPIO pins.
1056 Twenty-one are powered by the core power rail and 9 from the
1057 suspend power supply.
1058
1059 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1060 power well and 6 from the suspend power well.
1061
1062config GPIO_SCH311X
1063 tristate "SMSC SCH311x SuperI/O GPIO"
1064 help
1065 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1066 SCH3116 "Super I/O" chipsets.
1067
1068 To compile this driver as a module, choose M here: the module will
1069 be called gpio-sch311x.
1070
1071config GPIO_TS5500
1072 tristate "TS-5500 DIO blocks and compatibles"
1073 depends on TS5500 || COMPILE_TEST
1074 help
1075 This driver supports Digital I/O exposed by pin blocks found on some
1076 Technologic Systems platforms. It includes, but is not limited to, 3
1077 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1078 LCD port.
1079
1080config GPIO_WINBOND
1081 tristate "Winbond Super I/O GPIO support"
1082 select ISA_BUS_API
1083 help
1084 This option enables support for GPIOs found on Winbond Super I/O
1085 chips.
1086 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1087 supported.
1088
1089 You will need to provide a module parameter "gpios", or a
1090 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1091 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1092
1093 To compile this driver as a module, choose M here: the module will
1094 be called gpio-winbond.
1095
1096config GPIO_WS16C48
1097 tristate "WinSystems WS16C48 GPIO support"
1098 select ISA_BUS_API
1099 select REGMAP_IRQ
1100 select REGMAP_MMIO
1101 select GPIOLIB_IRQCHIP
1102 select GPIO_REGMAP
1103 help
1104 Enables GPIO support for the WinSystems WS16C48. The base port
1105 addresses for the devices may be configured via the base module
1106 parameter. The interrupt line numbers for the devices may be
1107 configured via the irq module parameter.
1108
1109endmenu
1110
1111menu "I2C GPIO expanders"
1112 depends on I2C
1113
1114config GPIO_ADNP
1115 tristate "Avionic Design N-bit GPIO expander"
1116 depends on OF_GPIO
1117 select GPIOLIB_IRQCHIP
1118 help
1119 This option enables support for N GPIOs found on Avionic Design
1120 I2C GPIO expanders. The register space will be extended by powers
1121 of two, so the controller will need to accommodate for that. For
1122 example: if a controller provides 48 pins, 6 registers will be
1123 enough to represent all pins, but the driver will assume a
1124 register layout for 64 pins (8 registers).
1125
1126config GPIO_FXL6408
1127 tristate "FXL6408 I2C GPIO expander"
1128 select GPIO_REGMAP
1129 select REGMAP_I2C
1130 help
1131 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1132
1133 To compile this driver as a module, choose M here: the module will
1134 be called gpio-fxl6408.
1135
1136config GPIO_DS4520
1137 tristate "DS4520 I2C GPIO expander"
1138 select REGMAP_I2C
1139 select GPIO_REGMAP
1140 help
1141 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1142 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1143
1144 To compile this driver as a module, choose M here: the module will
1145 be called gpio-ds4520.
1146
1147config GPIO_GW_PLD
1148 tristate "Gateworks PLD GPIO Expander"
1149 depends on OF_GPIO
1150 help
1151 Say yes here to provide access to the Gateworks I2C PLD GPIO
1152 Expander. This is used at least on the Cambria GW2358-4.
1153
1154config GPIO_MAX7300
1155 tristate "Maxim MAX7300 GPIO expander"
1156 select GPIO_MAX730X
1157 help
1158 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1159
1160config GPIO_MAX732X
1161 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1162 help
1163 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1164 Port Expanders. Each IO port on these chips has a fixed role of
1165 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1166 Input and Output (designed by 'P'). The combinations are listed
1167 below:
1168
1169 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1170 max7322 (4I4O), max7323 (4P4O)
1171
1172 16 bits: max7324 (8I8O), max7325 (8P8O),
1173 max7326 (4I12O), max7327 (4P12O)
1174
1175 Board setup code must specify the model to use, and the start
1176 number for these GPIOs.
1177
1178config GPIO_MAX732X_IRQ
1179 bool "Interrupt controller support for MAX732x"
1180 depends on GPIO_MAX732X=y
1181 select GPIOLIB_IRQCHIP
1182 help
1183 Say yes here to enable the max732x to be used as an interrupt
1184 controller. It requires the driver to be built in the kernel.
1185
1186config GPIO_PCA953X
1187 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1188 select REGMAP_I2C
1189 help
1190 Say yes here to provide access to several register-oriented
1191 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1192 models include:
1193
1194 4 bits: pca9536, pca9537
1195
1196 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1197 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202,
1198 pcal6408, pcal9554b, tca9538
1199
1200 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1201 tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318,
1202 tca9539
1203
1204 18 bits: tca6418
1205
1206 24 bits: tca6424, pcal6524
1207
1208 40 bits: pca9505, pca9698, pca9506
1209
1210config GPIO_PCA953X_IRQ
1211 bool "Interrupt controller support for PCA953x"
1212 depends on GPIO_PCA953X
1213 select GPIOLIB_IRQCHIP
1214 help
1215 Say yes here to enable the pca953x to be used as an interrupt
1216 controller.
1217
1218config GPIO_PCA9570
1219 tristate "PCA9570 4-Bit I2C GPO expander"
1220 help
1221 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1222
1223 To compile this driver as a module, choose M here: the module will
1224 be called gpio-pca9570.
1225
1226config GPIO_PCF857X
1227 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1228 select GPIOLIB_IRQCHIP
1229 select IRQ_DOMAIN
1230 help
1231 Say yes here to provide access to most "quasi-bidirectional" I2C
1232 GPIO expanders used for additional digital outputs or inputs.
1233 Most of these parts are from NXP, though TI is a second source for
1234 some of them. Compatible models include:
1235
1236 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1237 pca9670, pca9672, pca9674, pca9674a,
1238 max7328, max7329
1239
1240 16 bits: pcf8575, pcf8575c, pca8575,
1241 pca9671, pca9673, pca9675
1242
1243 Your board setup code will need to declare the expanders in
1244 use, and assign numbers to the GPIOs they expose. Those GPIOs
1245 can then be used from drivers and other kernel code, just like
1246 other GPIOs, but only accessible from task contexts.
1247
1248 This driver provides an in-kernel interface to those GPIOs using
1249 platform-neutral GPIO calls.
1250
1251config GPIO_TPIC2810
1252 tristate "TPIC2810 8-Bit I2C GPO expander"
1253 help
1254 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1255
1256 To compile this driver as a module, choose M here: the module will
1257 be called gpio-tpic2810.
1258
1259config GPIO_TS4900
1260 tristate "Technologic Systems FPGA I2C GPIO"
1261 depends on SOC_IMX6 || COMPILE_TEST
1262 select REGMAP_I2C
1263 help
1264 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1265 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1266
1267endmenu
1268
1269menu "MFD GPIO expanders"
1270
1271config GPIO_ADP5520
1272 tristate "GPIO Support for ADP5520 PMIC"
1273 depends on PMIC_ADP5520
1274 help
1275 This option enables support for on-chip GPIO found
1276 on Analog Devices ADP5520 PMICs.
1277
1278config GPIO_ADP5585
1279 tristate "GPIO Support for ADP5585"
1280 depends on MFD_ADP5585
1281 select GPIOLIB_IRQCHIP
1282 help
1283 This option enables support for the GPIO function found in the Analog
1284 Devices ADP5585.
1285
1286config GPIO_ALTERA_A10SR
1287 tristate "Altera Arria10 System Resource GPIO"
1288 depends on MFD_ALTERA_A10SR
1289 help
1290 Driver for Arria10 Development Kit GPIO expansion which
1291 includes reads of pushbuttons and DIP switches as well
1292 as writes to LEDs.
1293
1294config GPIO_ARIZONA
1295 tristate "Wolfson Microelectronics Arizona class devices"
1296 depends on MFD_ARIZONA
1297 help
1298 Support for GPIOs on Wolfson Arizona class devices.
1299
1300config GPIO_BD71815
1301 tristate "ROHM BD71815 PMIC GPIO support"
1302 depends on MFD_ROHM_BD71828
1303 help
1304 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1305 available on the ROHM PMIC.
1306
1307 This driver can also be built as a module. If so, the module
1308 will be called gpio-bd71815.
1309
1310config GPIO_BD71828
1311 tristate "ROHM BD71828 GPIO support"
1312 depends on MFD_ROHM_BD71828
1313 help
1314 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1315 available on the ROHM PMIC in total. The GPIOs are limited to
1316 outputs only and pins must be configured to GPIO outputs by
1317 OTP. Enable this only if you want to use these pins as outputs.
1318
1319 This driver can also be built as a module. If so, the module
1320 will be called gpio-bd71828.
1321
1322config GPIO_BD9571MWV
1323 tristate "ROHM BD9571 GPIO support"
1324 depends on MFD_BD9571MWV
1325 help
1326 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1327 available on the ROHM PMIC in total, both of which can also
1328 generate interrupts.
1329
1330 This driver can also be built as a module. If so, the module
1331 will be called gpio-bd9571mwv.
1332
1333config GPIO_CGBC
1334 tristate "Congatec Board Controller GPIO support"
1335 depends on MFD_CGBC
1336 help
1337 Select this option to enable GPIO support for the Congatec Board
1338 Controller.
1339
1340 This driver can also be built as a module. If so, the module will be
1341 called gpio-cgbc.
1342
1343config GPIO_CROS_EC
1344 tristate "ChromeOS EC GPIO support"
1345 depends on CROS_EC
1346 help
1347 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1348 cannot be set unless the system is unlocked.
1349
1350 This driver can also be built as a module. If so, the module
1351 will be called gpio-cros-ec.
1352
1353config GPIO_CRYSTAL_COVE
1354 tristate "GPIO support for Crystal Cove PMIC"
1355 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1356 select GPIOLIB_IRQCHIP
1357 help
1358 Support for GPIO pins on Crystal Cove PMIC.
1359
1360 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1361 inside.
1362
1363 This driver can also be built as a module. If so, the module will be
1364 called gpio-crystalcove.
1365
1366config GPIO_CS5535
1367 tristate "AMD CS5535/CS5536 GPIO support"
1368 depends on X86 || MIPS || COMPILE_TEST
1369 depends on MFD_CS5535
1370 help
1371 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1372 can be used for quite a number of things. The CS5535/6 is found on
1373 AMD Geode and Lemote Yeeloong devices.
1374
1375 If unsure, say N.
1376
1377config GPIO_DA9052
1378 tristate "Dialog DA9052 GPIO"
1379 depends on PMIC_DA9052
1380 help
1381 Say yes here to enable the GPIO driver for the DA9052 chip.
1382
1383config GPIO_DA9055
1384 tristate "Dialog Semiconductor DA9055 GPIO"
1385 depends on MFD_DA9055
1386 help
1387 Say yes here to enable the GPIO driver for the DA9055 chip.
1388
1389 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1390 be controlled by this driver.
1391
1392 If driver is built as a module it will be called gpio-da9055.
1393
1394config GPIO_DLN2
1395 tristate "Diolan DLN2 GPIO support"
1396 depends on MFD_DLN2
1397 select GPIOLIB_IRQCHIP
1398
1399 help
1400 Select this option to enable GPIO driver for the Diolan DLN2
1401 board.
1402
1403 This driver can also be built as a module. If so, the module
1404 will be called gpio-dln2.
1405
1406config HTC_EGPIO
1407 bool "HTC EGPIO support"
1408 depends on ARM || COMPILE_TEST
1409 help
1410 This driver supports the CPLD egpio chip present on
1411 several HTC phones. It provides basic support for input
1412 pins, output pins, and IRQs.
1413
1414config GPIO_ELKHARTLAKE
1415 tristate "Intel Elkhart Lake PSE GPIO support"
1416 depends on X86 || COMPILE_TEST
1417 select GPIO_TANGIER
1418 help
1419 Select this option to enable GPIO support for Intel Elkhart Lake
1420 PSE GPIO IP.
1421
1422 To compile this driver as a module, choose M here: the module will
1423 be called gpio-elkhartlake.
1424
1425config GPIO_JANZ_TTL
1426 tristate "Janz VMOD-TTL Digital IO Module"
1427 depends on MFD_JANZ_CMODIO
1428 help
1429 This enables support for the Janz VMOD-TTL Digital IO module.
1430 This driver provides support for driving the pins in output
1431 mode only. Input mode is not supported.
1432
1433config GPIO_KEMPLD
1434 tristate "Kontron ETX / COMexpress GPIO"
1435 depends on MFD_KEMPLD
1436 help
1437 This enables support for the PLD GPIO interface on some Kontron ETX
1438 and COMexpress (ETXexpress) modules.
1439
1440 This driver can also be built as a module. If so, the module will be
1441 called gpio-kempld.
1442
1443config GPIO_LJCA
1444 tristate "INTEL La Jolla Cove Adapter GPIO support"
1445 depends on USB_LJCA
1446 select GPIOLIB_IRQCHIP
1447 default USB_LJCA
1448 help
1449 Select this option to enable GPIO driver for the INTEL
1450 La Jolla Cove Adapter (LJCA) board.
1451
1452 This driver can also be built as a module. If so, the module
1453 will be called gpio-ljca.
1454
1455config GPIO_LP3943
1456 tristate "TI/National Semiconductor LP3943 GPIO expander"
1457 depends on MFD_LP3943
1458 help
1459 GPIO driver for LP3943 MFD.
1460 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1461 Open drain outputs are required for this usage.
1462
1463config GPIO_LP873X
1464 tristate "TI LP873X GPO"
1465 depends on MFD_TI_LP873X
1466 help
1467 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1468 on LP873X PMICs.
1469
1470 This driver can also be built as a module. If so, the module will be
1471 called gpio-lp873x.
1472
1473config GPIO_LP87565
1474 tristate "TI LP87565 GPIO"
1475 depends on MFD_TI_LP87565
1476 help
1477 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1478 on LP87565 PMICs.
1479
1480 This driver can also be built as a module. If so, the module will be
1481 called gpio-lp87565.
1482
1483config GPIO_MACSMC
1484 tristate "Apple Mac SMC GPIO"
1485 depends on MFD_MACSMC
1486 help
1487 Support for GPIOs controlled by the SMC microcontroller on Apple Mac
1488 systems.
1489
1490 This driver can also be built as a module. If so, the module will be
1491 called gpio-macsmc.
1492
1493config GPIO_MADERA
1494 tristate "Cirrus Logic Madera class codecs"
1495 depends on PINCTRL_MADERA
1496 help
1497 Support for GPIOs on Cirrus Logic Madera class codecs.
1498
1499config GPIO_MAX7360
1500 tristate "MAX7360 GPIO support"
1501 depends on MFD_MAX7360
1502 select GPIO_REGMAP
1503 select REGMAP_IRQ
1504 help
1505 Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL
1506 lines as GPO.
1507
1508 This driver can also be built as a module. If so, the module will be
1509 called gpio-max7360.
1510
1511config GPIO_MAX77620
1512 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1513 depends on MFD_MAX77620
1514 select GPIOLIB_IRQCHIP
1515 help
1516 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1517 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1518 driver also provides interrupt support for each of the GPIOs.
1519 Say yes here to enable the max77620 to be used as GPIO controller.
1520
1521config GPIO_MAX77650
1522 tristate "Maxim MAX77650/77651 GPIO support"
1523 depends on MFD_MAX77650
1524 help
1525 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1526 These chips have a single pin that can be configured as GPIO.
1527
1528config GPIO_MAX77759
1529 tristate "Maxim Integrated MAX77759 GPIO support"
1530 depends on MFD_MAX77759
1531 default MFD_MAX77759
1532 select GPIOLIB_IRQCHIP
1533 help
1534 GPIO driver for MAX77759 PMIC from Maxim Integrated.
1535 There are two GPIOs available on these chips in total, both of
1536 which can also generate interrupts.
1537
1538 This driver can also be built as a module. If so, the module will be
1539 called gpio-max77759.
1540
1541config GPIO_NCT6694
1542 tristate "Nuvoton NCT6694 GPIO controller support"
1543 depends on MFD_NCT6694
1544 select GENERIC_IRQ_CHIP
1545 select GPIOLIB_IRQCHIP
1546 help
1547 This driver supports 8 GPIO pins per bank that can all be interrupt
1548 sources.
1549
1550 This driver can also be built as a module. If so, the module will be
1551 called gpio-nct6694.
1552
1553config GPIO_PALMAS
1554 tristate "TI PALMAS series PMICs GPIO"
1555 depends on MFD_PALMAS
1556 help
1557 Select this option to enable GPIO driver for the TI PALMAS
1558 series chip family.
1559
1560config GPIO_PMIC_EIC_SPRD
1561 tristate "Spreadtrum PMIC EIC support"
1562 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1563 depends on OF_GPIO
1564 select GPIOLIB_IRQCHIP
1565 help
1566 Say yes here to support Spreadtrum PMIC EIC device.
1567
1568config GPIO_RC5T583
1569 bool "RICOH RC5T583 GPIO"
1570 depends on MFD_RC5T583
1571 help
1572 Select this option to enable GPIO driver for the Ricoh RC5T583
1573 chip family.
1574 This driver provides the support for driving/reading the GPIO pins
1575 of RC5T583 device through standard GPIO library.
1576
1577config GPIO_SL28CPLD
1578 tristate "Kontron sl28cpld GPIO support"
1579 depends on MFD_SL28CPLD || COMPILE_TEST
1580 select GPIO_REGMAP
1581 select GPIOLIB_IRQCHIP
1582 select REGMAP_IRQ
1583 help
1584 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1585
1586 This driver can also be built as a module. If so, the module will be
1587 called gpio-sl28cpld.
1588
1589config GPIO_STMPE
1590 tristate "STMPE GPIOs"
1591 depends on MFD_STMPE
1592 depends on OF_GPIO
1593 select GPIOLIB_IRQCHIP
1594 help
1595 This enables support for the GPIOs found on the STMPE I/O
1596 Expanders.
1597
1598config GPIO_TC3589X
1599 bool "TC3589X GPIOs"
1600 depends on MFD_TC3589X
1601 depends on OF_GPIO
1602 select GPIOLIB_IRQCHIP
1603 help
1604 This enables support for the GPIOs found on the TC3589X
1605 I/O Expander.
1606
1607config GPIO_TIMBERDALE
1608 bool "Support for timberdale GPIO IP"
1609 depends on MFD_TIMBERDALE
1610 select GPIOLIB_IRQCHIP
1611 help
1612 Add support for the GPIO IP in the timberdale FPGA.
1613
1614config GPIO_TN48M_CPLD
1615 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1616 depends on MFD_TN48M_CPLD || COMPILE_TEST
1617 select GPIO_REGMAP
1618 help
1619 This enables support for the GPIOs found on the Delta
1620 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1621 they are input-only or output-only type.
1622
1623 This driver can also be built as a module. If so, the
1624 module will be called gpio-tn48m.
1625
1626config GPIO_TPS65086
1627 tristate "TI TPS65086 GPO"
1628 depends on MFD_TPS65086
1629 help
1630 This driver supports the GPO on TI TPS65086x PMICs.
1631
1632config GPIO_TPS65218
1633 tristate "TPS65218 GPIO"
1634 depends on MFD_TPS65218
1635 help
1636 Select this option to enable GPIO driver for the TPS65218
1637 chip family.
1638
1639config GPIO_TPS65219
1640 tristate "TPS65219 GPIO"
1641 depends on MFD_TPS65219
1642 default MFD_TPS65219
1643 help
1644 Select this option to enable GPIO driver for the TPS65219 chip
1645 family.
1646 GPIO0 is statically configured as either input or output prior to
1647 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1648 is statically configured by NVM. GPIO0 can't be used as a generic
1649 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1650 MULTI_DEVICE_EN=1.
1651
1652 This driver can also be built as a module. If so, the module will be
1653 called gpio_tps65219.
1654
1655config GPIO_TPS6586X
1656 bool "TPS6586X GPIO"
1657 depends on MFD_TPS6586X
1658 help
1659 Select this option to enable GPIO driver for the TPS6586X
1660 chip family.
1661
1662config GPIO_TPS65910
1663 bool "TPS65910 GPIO"
1664 depends on MFD_TPS65910
1665 help
1666 Select this option to enable GPIO driver for the TPS65910
1667 chip family.
1668
1669config GPIO_TPS65912
1670 tristate "TI TPS65912 GPIO"
1671 depends on MFD_TPS65912
1672 help
1673 This driver supports TPS65912 GPIO chip.
1674
1675config GPIO_TPS68470
1676 tristate "TPS68470 GPIO"
1677 depends on INTEL_SKL_INT3472
1678 help
1679 Select this option to enable GPIO driver for the TPS68470
1680 chip family.
1681 There are 7 GPIOs and few sensor-related GPIOs supported
1682 by the TPS68470. While the 7 GPIOs can be configured as
1683 input or output as appropriate, the sensor related GPIOs
1684 are "output only" GPIOs.
1685
1686config GPIO_TQMX86
1687 tristate "TQ-Systems TQMx86 GPIO"
1688 depends on MFD_TQMX86 || COMPILE_TEST
1689 depends on HAS_IOPORT_MAP
1690 select GPIOLIB_IRQCHIP
1691 help
1692 This driver supports GPIO on the TQMX86 IO controller.
1693
1694config GPIO_TWL4030
1695 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1696 depends on TWL4030_CORE
1697 help
1698 Say yes here to access the GPIO signals of various multi-function
1699 power management chips from Texas Instruments.
1700
1701config GPIO_TWL6040
1702 tristate "TWL6040 GPO"
1703 depends on TWL6040_CORE
1704 help
1705 Say yes here to access the GPO signals of twl6040
1706 audio chip from Texas Instruments.
1707
1708config GPIO_WHISKEY_COVE
1709 tristate "GPIO support for Whiskey Cove PMIC"
1710 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1711 select GPIOLIB_IRQCHIP
1712 help
1713 Support for GPIO pins on Whiskey Cove PMIC.
1714
1715 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1716 inside.
1717
1718 This driver can also be built as a module. If so, the module will be
1719 called gpio-wcove.
1720
1721config GPIO_WM831X
1722 tristate "WM831x GPIOs"
1723 depends on MFD_WM831X
1724 help
1725 Say yes here to access the GPIO signals of WM831x power management
1726 chips from Wolfson Microelectronics.
1727
1728config GPIO_WM8350
1729 tristate "WM8350 GPIOs"
1730 depends on MFD_WM8350
1731 help
1732 Say yes here to access the GPIO signals of WM8350 power management
1733 chips from Wolfson Microelectronics.
1734
1735config GPIO_WM8994
1736 tristate "WM8994 GPIOs"
1737 depends on MFD_WM8994
1738 help
1739 Say yes here to access the GPIO signals of WM8994 audio hub
1740 CODECs from Wolfson Microelectronics.
1741
1742endmenu
1743
1744menu "PCI GPIO expanders"
1745 depends on PCI
1746
1747config GPIO_AMD8111
1748 tristate "AMD 8111 GPIO driver"
1749 depends on X86 || COMPILE_TEST
1750 depends on HAS_IOPORT_MAP
1751 help
1752 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1753
1754 Note that usually system firmware/ACPI handles GPIO pins on their
1755 own and users might easily break their systems with uncareful usage
1756 of this driver!
1757
1758 If unsure, say N
1759
1760config GPIO_BT8XX
1761 tristate "BT8XX GPIO abuser"
1762 depends on VIDEO_BT848=n || COMPILE_TEST
1763 help
1764 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1765 as a cheap PCI GPIO card.
1766
1767 This chip can be found on Miro, Hauppauge and STB TV-cards.
1768
1769 The card needs to be physically altered for using it as a
1770 GPIO card. For more information on how to build a GPIO card
1771 from a BT8xx TV card, see the documentation file at
1772 Documentation/driver-api/gpio/bt8xxgpio.rst
1773
1774 If unsure, say N.
1775
1776config GPIO_MERRIFIELD
1777 tristate "Intel Merrifield GPIO support"
1778 depends on X86_INTEL_MID
1779 select GPIO_TANGIER
1780 help
1781 Say Y here to support Intel Merrifield GPIO.
1782
1783config GPIO_MLXBF
1784 tristate "Mellanox BlueField SoC GPIO"
1785 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1786 select GPIO_GENERIC
1787 help
1788 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1789
1790config GPIO_MLXBF2
1791 tristate "Mellanox BlueField 2 SoC GPIO"
1792 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1793 select GPIO_GENERIC
1794 select GPIOLIB_IRQCHIP
1795 help
1796 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1797
1798config GPIO_MLXBF3
1799 tristate "Mellanox BlueField 3 SoC GPIO"
1800 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1801 select GPIO_GENERIC
1802 select GPIOLIB_IRQCHIP
1803 help
1804 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1805 This GPIO controller supports interrupt handling and enables the
1806 manipulation of certain GPIO pins.
1807 This controller should be used in parallel with pinctrl-mlxbf3 to
1808 control the desired GPIOs.
1809 This driver can also be built as a module called mlxbf3-gpio.
1810
1811config GPIO_ML_IOH
1812 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1813 depends on X86 || COMPILE_TEST
1814 select GENERIC_IRQ_CHIP
1815 help
1816 ML7213 is companion chip for Intel Atom E6xx series.
1817 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1818 Hub) which is for IVI (In-Vehicle Infotainment) use.
1819 This driver can access the IOH's GPIO device.
1820
1821config GPIO_PCH
1822 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1823 depends on X86_32 || MIPS || COMPILE_TEST
1824 select GENERIC_IRQ_CHIP
1825 help
1826 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1827 which is an IOH (Input/Output Hub) for x86 embedded processor.
1828 This driver can access PCH GPIO device.
1829
1830 This driver also can be used for LAPIS Semiconductor IOH (Input/
1831 Output Hub), ML7223 and ML7831.
1832 ML7223 IOH is for MP (Media Phone) use.
1833 ML7831 IOH is for general purpose use.
1834 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1835 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1836
1837config GPIO_PCI_IDIO_16
1838 tristate "ACCES PCI-IDIO-16 GPIO support"
1839 select REGMAP_MMIO
1840 select GPIO_IDIO_16
1841 help
1842 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1843 generated when any of the inputs change state (low to high or high to
1844 low). Input filter control is not supported by this driver, and the
1845 input filters are deactivated by this driver.
1846
1847config GPIO_PCIE_IDIO_24
1848 tristate "ACCES PCIe-IDIO-24 GPIO support"
1849 select REGMAP_IRQ
1850 select REGMAP_MMIO
1851 select GPIOLIB_IRQCHIP
1852 select GPIO_REGMAP
1853 help
1854 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1855 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1856 when any of the inputs change state (low to high or high to low).
1857 Input filter control is not supported by this driver, and the input
1858 filters are deactivated by this driver.
1859
1860config GPIO_RDC321X
1861 tristate "RDC R-321x GPIO support"
1862 select MFD_CORE
1863 select MFD_RDC321X
1864 help
1865 Support for the RDC R321x SoC GPIOs over southbridge
1866 PCI configuration space.
1867
1868config GPIO_SODAVILLE
1869 bool "Intel Sodaville GPIO support"
1870 depends on X86 && OF
1871 select GPIO_GENERIC
1872 select GENERIC_IRQ_CHIP
1873 help
1874 Say Y here to support Intel Sodaville GPIO.
1875
1876endmenu
1877
1878menu "SPI GPIO expanders"
1879 depends on SPI_MASTER
1880
1881config GPIO_74X164
1882 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1883 help
1884 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1885 shift registers. This driver can be used to provide access
1886 to more GPIO outputs.
1887
1888config GPIO_MAX3191X
1889 tristate "Maxim MAX3191x industrial serializer"
1890 select CRC8
1891 help
1892 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1893 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1894 chip to make 8 digital 24V inputs available via SPI. Supports
1895 CRC checksums to guard against electromagnetic interference,
1896 as well as undervoltage and overtemperature detection.
1897
1898config GPIO_MAX7301
1899 tristate "Maxim MAX7301 GPIO expander"
1900 select GPIO_MAX730X
1901 help
1902 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1903
1904config GPIO_MC33880
1905 tristate "Freescale MC33880 high-side/low-side switch"
1906 help
1907 SPI driver for Freescale MC33880 high-side/low-side switch.
1908 This provides GPIO interface supporting inputs and outputs.
1909
1910config GPIO_PISOSR
1911 tristate "Generic parallel-in/serial-out shift register"
1912 help
1913 GPIO driver for SPI compatible parallel-in/serial-out shift
1914 registers. These are input only devices.
1915
1916config GPIO_XRA1403
1917 tristate "EXAR XRA1403 16-bit GPIO expander"
1918 select REGMAP_SPI
1919 help
1920 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1921
1922config GPIO_MOXTET
1923 tristate "Turris Mox Moxtet bus GPIO expander"
1924 depends on MOXTET
1925 help
1926 Say yes here if you are building for the Turris Mox router.
1927 This is the driver needed for configuring the GPIOs via the Moxtet
1928 bus. For example the Mox module with SFP cage needs this driver
1929 so that phylink can use corresponding GPIOs.
1930
1931endmenu
1932
1933menu "USB GPIO expanders"
1934 depends on USB
1935
1936config GPIO_VIPERBOARD
1937 tristate "Viperboard GPIO a & b support"
1938 depends on MFD_VIPERBOARD
1939 help
1940 Say yes here to access the GPIO signals of Nano River
1941 Technologies Viperboard. There are two GPIO chips on the
1942 board: gpioa and gpiob.
1943 See viperboard API specification and Nano
1944 River Tech's viperboard.h for detailed meaning
1945 of the module parameters.
1946
1947config GPIO_MPSSE
1948 tristate "FTDI MPSSE GPIO support"
1949 select GPIOLIB_IRQCHIP
1950 help
1951 GPIO driver for FTDI's MPSSE interface. These can do input and
1952 output. Each MPSSE provides 16 IO pins.
1953
1954config GPIO_USBIO
1955 tristate "Intel USBIO GPIO support"
1956 depends on USB_USBIO
1957 default USB_USBIO
1958 help
1959 Select this option to enable GPIO driver for the INTEL
1960 USBIO driver stack.
1961
1962 This driver can also be built as a module. If so, the module
1963 will be called gpio_usbio.
1964
1965endmenu
1966
1967menu "Virtual GPIO drivers"
1968
1969config GPIO_AGGREGATOR
1970 tristate "GPIO Aggregator"
1971 select CONFIGFS_FS
1972 select DEV_SYNC_PROBE
1973 help
1974 Say yes here to enable the GPIO Aggregator, which provides a way to
1975 aggregate existing GPIO lines into a new virtual GPIO chip.
1976 This can serve the following purposes:
1977 - Assign permissions for a collection of GPIO lines to a user,
1978 - Export a collection of GPIO lines to a virtual machine,
1979 - Provide a generic driver for a GPIO-operated device in an
1980 industrial control context, to be operated from userspace using
1981 the GPIO chardev interface.
1982
1983config GPIO_LATCH
1984 tristate "GPIO latch driver"
1985 help
1986 Say yes here to enable a driver for GPIO multiplexers based on latches
1987 connected to other GPIOs.
1988
1989config GPIO_MOCKUP
1990 tristate "GPIO Testing Driver (DEPRECATED)"
1991 select IRQ_SIM
1992 help
1993 This module is DEPRECATED. Please consider using gpio-sim instead.
1994
1995 This enables GPIO Testing driver, which provides a way to test GPIO
1996 subsystem through sysfs (or char device) and debugfs.
1997 User could use it through the script in
1998 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1999 it.
2000
2001config GPIO_VIRTIO
2002 tristate "VirtIO GPIO support"
2003 depends on VIRTIO
2004 select GPIOLIB_IRQCHIP
2005 help
2006 Say Y here to enable guest support for virtio-based GPIO controllers.
2007
2008 These virtual GPIOs can be routed to real GPIOs or attached to
2009 simulators on the host (like QEMU).
2010
2011config GPIO_SIM
2012 tristate "GPIO Simulator Module"
2013 select IRQ_SIM
2014 select CONFIGFS_FS
2015 select DEV_SYNC_PROBE
2016 help
2017 This enables the GPIO simulator - a configfs-based GPIO testing
2018 driver.
2019
2020endmenu
2021
2022menu "GPIO Debugging utilities"
2023
2024config GPIO_SLOPPY_LOGIC_ANALYZER
2025 tristate "Sloppy GPIO logic analyzer"
2026 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
2027 help
2028 This option enables support for a sloppy logic analyzer using polled
2029 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
2030 this driver. The script will make it easier to use and will also
2031 isolate a CPU for the polling task. Note that this is a last resort
2032 analyzer which can be affected by latencies, non-deterministic code
2033 paths, or NMIs. However, for e.g. remote development, it may be useful
2034 to get a first view and aid further debugging.
2035
2036 If this driver is built as a module it will be called
2037 'gpio-sloppy-logic-analyzer'.
2038
2039config GPIO_VIRTUSER
2040 tristate "GPIO Virtual User Testing Module"
2041 select DEBUG_FS
2042 select CONFIGFS_FS
2043 select IRQ_WORK
2044 select DEV_SYNC_PROBE
2045 help
2046 Say Y here to enable the configurable, configfs-based virtual GPIO
2047 consumer testing driver.
2048
2049 This driver is aimed as a helper in spotting any regressions in
2050 hot-unplug handling in GPIOLIB.
2051
2052endmenu
2053
2054endif
2055
2056config DEV_SYNC_PROBE
2057 tristate