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# SPDX-License-Identifier: GPL-2.0-only
2#
3# GPIO infrastructure and drivers
4#
5
6menuconfig GPIOLIB
7 bool "GPIO Support"
8 help
9 This enables GPIO support through the generic GPIO library.
10 You only need to enable this if you also want to enable
11 one or more of the GPIO drivers below.
12
13 If unsure, say N.
14
15if GPIOLIB
16
17config GPIOLIB_FASTPATH_LIMIT
18 int "Maximum number of GPIOs for fast path"
19 range 32 512
20 default 512
21 help
22 This adjusts the point at which certain APIs will switch from
23 using a stack allocated buffer to a dynamically allocated buffer.
24
25 You shouldn't need to change this unless you really need to
26 optimize either stack space or performance. Change this carefully
27 since setting an incorrect value could cause stack corruption.
28
29config OF_GPIO
30 def_bool y
31 depends on OF
32 depends on HAS_IOMEM
33
34config GPIO_ACPI
35 def_bool y
36 depends on ACPI
37
38config GPIOLIB_IRQCHIP
39 select IRQ_DOMAIN
40 bool
41
42config OF_GPIO_MM_GPIOCHIP
43 bool
44 help
45 This adds support for the legacy 'struct of_mm_gpio_chip' interface
46 from PowerPC. Existing drivers using this interface need to select
47 this symbol, but new drivers should use the generic gpio-regmap
48 infrastructure instead.
49
50config DEBUG_GPIO
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
53 help
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
60
61config GPIO_SYSFS
62 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
63 depends on SYSFS
64 select GPIO_CDEV # We need to encourage the new ABI
65 help
66 Say Y here to add the legacy sysfs interface for GPIOs.
67
68 This ABI is deprecated. If you want to use GPIO from userspace,
69 use the character device /dev/gpiochipN with the appropriate
70 ioctl() operations instead.
71
72config GPIO_CDEV
73 bool
74 prompt "Character device (/dev/gpiochipN) support" if EXPERT
75 default y
76 help
77 Say Y here to add the character device /dev/gpiochipN interface
78 for GPIOs. The character device allows userspace to control GPIOs
79 using ioctl() operations.
80
81 Only say N if you are sure that the GPIO character device is not
82 required.
83
84 If unsure, say Y.
85
86config GPIO_CDEV_V1
87 bool "Support GPIO ABI Version 1"
88 default y
89 depends on GPIO_CDEV
90 help
91 Say Y here to support version 1 of the GPIO CDEV ABI.
92
93 This ABI version is deprecated.
94 Please use the latest ABI for new developments.
95
96 If unsure, say Y.
97
98config GPIO_GENERIC
99 depends on HAS_IOMEM # Only for IOMEM drivers
100 tristate
101
102config GPIO_REGMAP
103 select REGMAP
104 tristate
105
106# put drivers in the right section, in alphabetical order
107
108# This symbol is selected by both I2C and SPI expanders
109config GPIO_MAX730X
110 tristate
111
112config GPIO_IDIO_16
113 tristate
114 help
115 Enables support for the idio-16 library functions. The idio-16 library
116 provides functions to facilitate communication with devices within the
117 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
118
119 If built as a module its name will be gpio-idio-16.
120
121menu "Memory mapped GPIO drivers"
122 depends on HAS_IOMEM
123
124config GPIO_74XX_MMIO
125 tristate "GPIO driver for 74xx-ICs with MMIO access"
126 depends on OF_GPIO
127 select GPIO_GENERIC
128 help
129 Say yes here to support GPIO functionality for 74xx-compatible ICs
130 with MMIO access. Compatible models include:
131 1 bit: 741G125 (Input), 741G74 (Output)
132 2 bits: 742G125 (Input), 7474 (Output)
133 4 bits: 74125 (Input), 74175 (Output)
134 6 bits: 74365 (Input), 74174 (Output)
135 8 bits: 74244 (Input), 74273 (Output)
136 16 bits: 741624 (Input), 7416374 (Output)
137
138config GPIO_ALTERA
139 tristate "Altera GPIO"
140 depends on OF_GPIO
141 select GPIOLIB_IRQCHIP
142 select OF_GPIO_MM_GPIOCHIP
143 help
144 Say Y or M here to build support for the Altera PIO device.
145
146 If driver is built as a module it will be called gpio-altera.
147
148config GPIO_AMDPT
149 tristate "AMD Promontory GPIO support"
150 depends on ACPI
151 select GPIO_GENERIC
152 help
153 Driver for GPIO functionality on Promontory IOHub.
154 Requires ACPI ASL code to enumerate as a platform device.
155
156config GPIO_ASPEED
157 tristate "Aspeed GPIO support"
158 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
159 select GPIOLIB_IRQCHIP
160 help
161 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
162
163config GPIO_ASPEED_SGPIO
164 bool "Aspeed SGPIO support"
165 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
166 select GPIO_GENERIC
167 select GPIOLIB_IRQCHIP
168 help
169 Say Y here to support Aspeed AST2500 SGPIO functionality.
170
171config GPIO_ATH79
172 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
173 default y if ATH79
174 depends on ATH79 || COMPILE_TEST
175 select GPIO_GENERIC
176 select GPIOLIB_IRQCHIP
177 help
178 Select this option to enable GPIO driver for
179 Atheros AR71XX/AR724X/AR913X SoC devices.
180
181config GPIO_RASPBERRYPI_EXP
182 tristate "Raspberry Pi 3 GPIO Expander"
183 default RASPBERRYPI_FIRMWARE
184 depends on OF_GPIO
185 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
186 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
187 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
188 help
189 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
190 the firmware mailbox to communicate with VideoCore on BCM283x chips.
191
192config GPIO_BCM_KONA
193 bool "Broadcom Kona GPIO"
194 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
195 help
196 Turn on GPIO support for Broadcom "Kona" chips.
197
198config GPIO_BCM_XGS_IPROC
199 tristate "BRCM XGS iProc GPIO support"
200 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
201 select GPIO_GENERIC
202 select GPIOLIB_IRQCHIP
203 default ARCH_BCM_IPROC
204 help
205 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
206
207config GPIO_BRCMSTB
208 tristate "BRCMSTB GPIO support"
209 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
210 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
211 select GPIO_GENERIC
212 select IRQ_DOMAIN
213 help
214 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
215
216config GPIO_CADENCE
217 tristate "Cadence GPIO support"
218 depends on OF_GPIO
219 select GPIO_GENERIC
220 select GPIOLIB_IRQCHIP
221 help
222 Say yes here to enable support for Cadence GPIO controller.
223
224config GPIO_CLPS711X
225 tristate "CLPS711X GPIO support"
226 depends on ARCH_CLPS711X || COMPILE_TEST
227 select GPIO_GENERIC
228 help
229 Say yes here to support GPIO on CLPS711X SoCs.
230
231config GPIO_DAVINCI
232 tristate "TI Davinci/Keystone GPIO support"
233 default y if ARCH_DAVINCI
234 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
235 help
236 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
237
238config GPIO_DWAPB
239 tristate "Synopsys DesignWare APB GPIO driver"
240 select GPIO_GENERIC
241 select GPIOLIB_IRQCHIP
242 help
243 Say Y or M here to build support for the Synopsys DesignWare APB
244 GPIO block.
245
246config GPIO_EIC_SPRD
247 tristate "Spreadtrum EIC support"
248 depends on ARCH_SPRD || COMPILE_TEST
249 depends on OF_GPIO
250 select GPIOLIB_IRQCHIP
251 help
252 Say yes here to support Spreadtrum EIC device.
253
254config GPIO_EM
255 tristate "Emma Mobile GPIO"
256 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
257 help
258 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
259
260config GPIO_EN7523
261 tristate "Airoha GPIO support"
262 depends on ARCH_AIROHA
263 default ARCH_AIROHA
264 select GPIO_GENERIC
265 select GPIOLIB_IRQCHIP
266 help
267 Say Y or M here to support the GPIO controller block on the
268 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
269
270config GPIO_EP93XX
271 def_bool y
272 depends on ARCH_EP93XX
273 select GPIO_GENERIC
274 select GPIOLIB_IRQCHIP
275
276config GPIO_EXAR
277 tristate "Support for GPIO pins on XR17V352/354/358"
278 depends on SERIAL_8250_EXAR
279 select REGMAP_MMIO
280 help
281 Selecting this option will enable handling of GPIO pins present
282 on Exar XR17V352/354/358 chips.
283
284config GPIO_GE_FPGA
285 bool "GE FPGA based GPIO"
286 depends on GE_FPGA
287 select GPIO_GENERIC
288 help
289 Support for common GPIO functionality provided on some GE Single Board
290 Computers.
291
292 This driver provides basic support (configure as input or output, read
293 and write pin state) for GPIO implemented in a number of GE single
294 board computers.
295
296config GPIO_FTGPIO010
297 bool "Faraday FTGPIO010 GPIO"
298 depends on OF_GPIO
299 select GPIO_GENERIC
300 select GPIOLIB_IRQCHIP
301 default (ARCH_GEMINI || ARCH_MOXART)
302 help
303 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
304 Cortina systems Gemini platforms, Moxa ART and others.
305
306config GPIO_GENERIC_PLATFORM
307 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
308 select GPIO_GENERIC
309 help
310 Say yes here to support basic platform_device memory-mapped GPIO controllers.
311
312config GPIO_GRGPIO
313 tristate "Aeroflex Gaisler GRGPIO support"
314 depends on OF_GPIO
315 select GPIO_GENERIC
316 select IRQ_DOMAIN
317 help
318 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
319 VHDL IP core library.
320
321config GPIO_HISI
322 tristate "HiSilicon GPIO controller driver"
323 depends on ARM64 || COMPILE_TEST
324 select GPIO_GENERIC
325 select GPIOLIB_IRQCHIP
326 help
327 Say Y or M here to build support for the HiSilicon GPIO controller
328 driver GPIO block.
329 This GPIO controller supports double-edge interrupt and multi-core
330 concurrent access.
331
332config GPIO_HLWD
333 tristate "Nintendo Wii (Hollywood) GPIO"
334 depends on OF_GPIO
335 select GPIO_GENERIC
336 select GPIOLIB_IRQCHIP
337 help
338 Select this to support the GPIO controller of the Nintendo Wii.
339
340 If unsure, say N.
341
342config GPIO_ICH
343 tristate "Intel ICH GPIO"
344 depends on X86
345 depends on LPC_ICH
346 help
347 Say yes here to support the GPIO functionality of a number of Intel
348 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
349 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
350 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
351
352 If unsure, say N.
353
354config GPIO_IMX_SCU
355 def_bool y
356 depends on IMX_SCU
357
358config GPIO_IXP4XX
359 bool "Intel IXP4xx GPIO"
360 depends on ARCH_IXP4XX
361 depends on OF
362 select GPIO_GENERIC
363 select GPIOLIB_IRQCHIP
364 select IRQ_DOMAIN_HIERARCHY
365 help
366 Say yes here to support the GPIO functionality of a number of Intel
367 IXP4xx series of chips.
368
369 If unsure, say N.
370
371config GPIO_LOGICVC
372 tristate "Xylon LogiCVC GPIO support"
373 depends on MFD_SYSCON && OF
374 help
375 Say yes here to support GPIO functionality of the Xylon LogiCVC
376 programmable logic block.
377
378config GPIO_LOONGSON
379 bool "Loongson-2/3 GPIO support"
380 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
381 help
382 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
383
384config GPIO_LOONGSON_64BIT
385 tristate "Loongson 64 bit GPIO support"
386 depends on LOONGARCH || COMPILE_TEST
387 depends on OF_GPIO
388 select GPIO_GENERIC
389 help
390 Say yes here to support the GPIO functionality of a number of
391 Loongson series of chips. The Loongson GPIO controller supports
392 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
393 the remaining 56 are reused with other functions, with edge or
394 level triggered interrupts.
395
396config GPIO_LPC18XX
397 tristate "NXP LPC18XX/43XX GPIO support"
398 default y if ARCH_LPC18XX
399 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
400 select IRQ_DOMAIN_HIERARCHY
401 help
402 Select this option to enable GPIO driver for
403 NXP LPC18XX/43XX devices.
404
405config GPIO_LPC32XX
406 tristate "NXP LPC32XX GPIO support"
407 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
408 help
409 Select this option to enable GPIO driver for
410 NXP LPC32XX devices.
411
412config GPIO_MB86S7X
413 tristate "GPIO support for Fujitsu MB86S7x Platforms"
414 help
415 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
416
417config GPIO_MENZ127
418 tristate "MEN 16Z127 GPIO support"
419 depends on MCB
420 select GPIO_GENERIC
421 help
422 Say yes here to support the MEN 16Z127 GPIO Controller.
423
424config GPIO_MM_LANTIQ
425 bool "Lantiq Memory mapped GPIOs"
426 depends on LANTIQ && SOC_XWAY
427 select OF_GPIO_MM_GPIOCHIP
428 help
429 This enables support for memory mapped GPIOs on the External Bus Unit
430 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
431 created by attaching a 16-bit latch to the bus.
432
433config GPIO_MPC5200
434 def_bool y
435 depends on PPC_MPC52xx
436 select OF_GPIO_MM_GPIOCHIP
437
438config GPIO_MPC8XXX
439 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
440 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
441 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
442 COMPILE_TEST
443 select GPIO_GENERIC
444 select IRQ_DOMAIN
445 help
446 Say Y here if you're going to use hardware that connects to the
447 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
448
449config GPIO_MT7621
450 bool "Mediatek MT7621 GPIO Support"
451 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
452 depends on OF_GPIO
453 select GPIO_GENERIC
454 select GPIOLIB_IRQCHIP
455 help
456 Say yes here to support the Mediatek MT7621 SoC GPIO device.
457
458config GPIO_MVEBU
459 def_bool y
460 depends on PLAT_ORION || ARCH_MVEBU
461 depends on OF_GPIO
462 select GENERIC_IRQ_CHIP
463 select REGMAP_MMIO
464
465config GPIO_MXC
466 tristate "i.MX GPIO support"
467 depends on ARCH_MXC || COMPILE_TEST
468 select GPIO_GENERIC
469 select GENERIC_IRQ_CHIP
470
471config GPIO_MXS
472 bool "Freescale MXS GPIO support" if COMPILE_TEST
473 depends on ARCH_MXS || COMPILE_TEST
474 default y if ARCH_MXS
475 select GPIO_GENERIC
476 select GENERIC_IRQ_CHIP
477
478config GPIO_OCTEON
479 tristate "Cavium OCTEON GPIO"
480 depends on CAVIUM_OCTEON_SOC
481 default y
482 help
483 Say yes here to support the on-chip GPIO lines on the OCTEON
484 family of SOCs.
485
486config GPIO_OMAP
487 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
488 default y if ARCH_OMAP
489 depends on ARM
490 select GENERIC_IRQ_CHIP
491 select GPIOLIB_IRQCHIP
492 help
493 Say yes here to enable GPIO support for TI OMAP SoCs.
494
495config GPIO_PL061
496 tristate "PrimeCell PL061 GPIO support"
497 depends on ARM_AMBA
498 select IRQ_DOMAIN
499 select GPIOLIB_IRQCHIP
500 help
501 Say yes here to support the PrimeCell PL061 GPIO device.
502
503config GPIO_PXA
504 bool "PXA GPIO support"
505 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
506 help
507 Say yes here to support the PXA GPIO device.
508
509config GPIO_RCAR
510 tristate "Renesas R-Car and RZ/G GPIO support"
511 depends on ARCH_RENESAS || COMPILE_TEST
512 select GPIOLIB_IRQCHIP
513 help
514 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
515
516config GPIO_RDA
517 bool "RDA Micro GPIO controller support"
518 depends on ARCH_RDA || COMPILE_TEST
519 depends on OF_GPIO
520 select GPIO_GENERIC
521 select GPIOLIB_IRQCHIP
522 help
523 Say Y here to support RDA Micro GPIO controller.
524
525config GPIO_REALTEK_OTTO
526 tristate "Realtek Otto GPIO support"
527 depends on MACH_REALTEK_RTL
528 default MACH_REALTEK_RTL
529 select GPIO_GENERIC
530 select GPIOLIB_IRQCHIP
531 help
532 The GPIO controller on the Otto MIPS platform supports up to two
533 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
534 are grouped in four 8-bit wide ports.
535
536 When built as a module, the module will be called realtek_otto_gpio.
537
538config GPIO_REG
539 bool
540 help
541 A 32-bit single register GPIO fixed in/out implementation. This
542 can be used to represent any register as a set of GPIO signals.
543
544config GPIO_ROCKCHIP
545 tristate "Rockchip GPIO support"
546 depends on ARCH_ROCKCHIP || COMPILE_TEST
547 select GENERIC_IRQ_CHIP
548 select GPIOLIB_IRQCHIP
549 default ARCH_ROCKCHIP
550 help
551 Say yes here to support GPIO on Rockchip SoCs.
552
553config GPIO_SAMA5D2_PIOBU
554 tristate "SAMA5D2 PIOBU GPIO support"
555 depends on MFD_SYSCON
556 depends on OF_GPIO
557 depends on ARCH_AT91 || COMPILE_TEST
558 select GPIO_SYSCON
559 help
560 Say yes here to use the PIOBU pins as GPIOs.
561
562 PIOBU pins on the SAMA5D2 can be used as GPIOs.
563 The difference from regular GPIOs is that they
564 maintain their value during backup/self-refresh.
565
566config GPIO_SIFIVE
567 bool "SiFive GPIO support"
568 depends on OF_GPIO
569 select IRQ_DOMAIN_HIERARCHY
570 select GPIO_GENERIC
571 select GPIOLIB_IRQCHIP
572 select REGMAP_MMIO
573 help
574 Say yes here to support the GPIO device on SiFive SoCs.
575
576config GPIO_SIOX
577 tristate "SIOX GPIO support"
578 depends on SIOX
579 select GPIOLIB_IRQCHIP
580 help
581 Say yes here to support SIOX I/O devices. These are units connected
582 via a SIOX bus and have a number of fixed-direction I/O lines.
583
584config GPIO_SNPS_CREG
585 bool "Synopsys GPIO via CREG (Control REGisters) driver"
586 depends on ARC || COMPILE_TEST
587 depends on OF_GPIO
588 help
589 This driver supports GPIOs via CREG on various Synopsys SoCs.
590 This is a single-register MMIO GPIO driver for complex cases
591 where only several fields in register belong to GPIO lines and
592 each GPIO line owns a field with different length and on/off value.
593
594config GPIO_SPEAR_SPICS
595 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
596 depends on PLAT_SPEAR
597 select GENERIC_IRQ_CHIP
598 help
599 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
600
601config GPIO_SPRD
602 tristate "Spreadtrum GPIO support"
603 depends on ARCH_SPRD || COMPILE_TEST
604 depends on OF_GPIO
605 select GPIOLIB_IRQCHIP
606 help
607 Say yes here to support Spreadtrum GPIO device.
608
609config GPIO_STP_XWAY
610 bool "XWAY STP GPIOs"
611 depends on SOC_XWAY || COMPILE_TEST
612 depends on OF_GPIO
613 help
614 This enables support for the Serial To Parallel (STP) unit found on
615 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
616 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
617 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
618 phy status.
619
620config GPIO_SYSCON
621 tristate "GPIO based on SYSCON"
622 depends on MFD_SYSCON && OF
623 help
624 Say yes here to support GPIO functionality though SYSCON driver.
625
626config GPIO_TANGIER
627 tristate
628 select GPIOLIB_IRQCHIP
629 help
630 GPIO support for Intel Tangier and compatible platforms.
631 Currently supported:
632 - Elkhart Lake
633 - Merrifield
634
635 If built as a module its name will be gpio-tangier.
636
637config GPIO_TB10X
638 bool
639 select GPIO_GENERIC
640 select GENERIC_IRQ_CHIP
641 select OF_GPIO
642
643config GPIO_TEGRA
644 tristate "NVIDIA Tegra GPIO support"
645 default ARCH_TEGRA
646 depends on ARCH_TEGRA || COMPILE_TEST
647 depends on OF_GPIO
648 select GPIOLIB_IRQCHIP
649 select IRQ_DOMAIN_HIERARCHY
650 help
651 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
652
653config GPIO_TEGRA186
654 tristate "NVIDIA Tegra186 GPIO support"
655 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
656 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
657 depends on OF_GPIO
658 select GPIOLIB_IRQCHIP
659 select IRQ_DOMAIN_HIERARCHY
660 help
661 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
662
663config GPIO_TS4800
664 tristate "TS-4800 DIO blocks and compatibles"
665 depends on OF_GPIO
666 depends on SOC_IMX51 || COMPILE_TEST
667 select GPIO_GENERIC
668 help
669 This driver support TS-4800 FPGA GPIO controllers.
670
671config GPIO_THUNDERX
672 tristate "Cavium ThunderX/OCTEON-TX GPIO"
673 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
674 depends on PCI_MSI
675 select GPIOLIB_IRQCHIP
676 select IRQ_DOMAIN_HIERARCHY
677 select IRQ_FASTEOI_HIERARCHY_HANDLERS
678 help
679 Say yes here to support the on-chip GPIO lines on the ThunderX
680 and OCTEON-TX families of SoCs.
681
682config GPIO_UNIPHIER
683 tristate "UniPhier GPIO support"
684 depends on ARCH_UNIPHIER || COMPILE_TEST
685 depends on OF_GPIO
686 select IRQ_DOMAIN_HIERARCHY
687 help
688 Say yes here to support UniPhier GPIOs.
689
690config GPIO_VF610
691 def_bool y
692 depends on ARCH_MXC
693 select GPIOLIB_IRQCHIP
694 help
695 Say yes here to support i.MX or Vybrid vf610 GPIOs.
696
697config GPIO_VISCONTI
698 tristate "Toshiba Visconti GPIO support"
699 depends on ARCH_VISCONTI || COMPILE_TEST
700 depends on OF_GPIO
701 select GPIOLIB_IRQCHIP
702 select GPIO_GENERIC
703 select IRQ_DOMAIN_HIERARCHY
704 help
705 Say yes here to support GPIO on Tohisba Visconti.
706
707config GPIO_VX855
708 tristate "VIA VX855/VX875 GPIO"
709 depends on (X86 || COMPILE_TEST) && PCI
710 select MFD_CORE
711 select MFD_VX855
712 help
713 Support access to the VX855/VX875 GPIO lines through the GPIO library.
714
715 This driver provides common support for accessing the device.
716 Additional drivers must be enabled in order to use the
717 functionality of the device.
718
719config GPIO_WCD934X
720 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
721 depends on MFD_WCD934X && OF_GPIO
722 help
723 This driver is to support GPIO block found on the Qualcomm Technologies
724 Inc WCD9340/WCD9341 Audio Codec.
725
726config GPIO_XGENE
727 bool "APM X-Gene GPIO controller support"
728 depends on ARM64 && OF_GPIO
729 help
730 This driver is to support the GPIO block within the APM X-Gene SoC
731 platform's generic flash controller. The GPIO pins are muxed with
732 the generic flash controller's address and data pins. Say yes
733 here to enable the GFC GPIO functionality.
734
735config GPIO_XGENE_SB
736 tristate "APM X-Gene GPIO standby controller support"
737 depends on (ARCH_XGENE || COMPILE_TEST)
738 select GPIO_GENERIC
739 select GPIOLIB_IRQCHIP
740 select IRQ_DOMAIN_HIERARCHY
741 help
742 This driver supports the GPIO block within the APM X-Gene
743 Standby Domain. Say yes here to enable the GPIO functionality.
744
745config GPIO_XILINX
746 tristate "Xilinx GPIO support"
747 select GPIOLIB_IRQCHIP
748 depends on OF_GPIO
749 help
750 Say yes here to support the Xilinx FPGA GPIO device.
751
752config GPIO_XLP
753 tristate "Cavium ThunderX2 GPIO support"
754 depends on ARCH_THUNDER2 || COMPILE_TEST
755 select GPIOLIB_IRQCHIP
756 help
757 This driver provides support for GPIO interface on Cavium's ThunderX2
758 CN99XX SoCs (Originally from Netlogic XLP).
759
760 If unsure, say N.
761
762config GPIO_XTENSA
763 bool "Xtensa GPIO32 support"
764 depends on XTENSA
765 depends on HAVE_XTENSA_GPIO32
766 depends on !SMP
767 help
768 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
769 and EXPSTATE (output) ports.
770
771config GPIO_ZEVIO
772 bool "LSI ZEVIO SoC memory mapped GPIOs"
773 depends on ARM
774 help
775 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
776
777config GPIO_ZYNQ
778 tristate "Xilinx Zynq GPIO support"
779 depends on ARCH_ZYNQ || ARCH_ZYNQMP
780 select GPIOLIB_IRQCHIP
781 help
782 Say yes here to support Xilinx Zynq GPIO controller.
783
784config GPIO_ZYNQMP_MODEPIN
785 tristate "ZynqMP ps-mode pin GPIO configuration driver"
786 depends on ZYNQMP_FIRMWARE
787 default ZYNQMP_FIRMWARE
788 help
789 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
790 driver.
791
792 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
793 is 4-bits boot mode pins. It sets and gets the status of
794 the ps-mode pin. Every pin can be configured as input/output.
795
796config GPIO_LOONGSON1
797 tristate "Loongson1 GPIO support"
798 depends on MACH_LOONGSON32
799 select GPIO_GENERIC
800 help
801 Say Y or M here to support GPIO on Loongson1 SoCs.
802
803config GPIO_AMD_FCH
804 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
805 help
806 This option enables driver for GPIO on AMD's Fusion Controller Hub,
807 as found on G-series SOCs (e.g. GX-412TC).
808
809 Note: This driver doesn't register itself automatically, as it
810 needs to be provided with platform-specific configuration.
811 (See e.g. CONFIG_PCENGINES_APU2.)
812
813config GPIO_MSC313
814 bool "MStar MSC313 GPIO support"
815 depends on ARCH_MSTARV7
816 default ARCH_MSTARV7
817 select GPIOLIB_IRQCHIP
818 select IRQ_DOMAIN_HIERARCHY
819 help
820 Say Y here to support the main GPIO block on MStar/SigmaStar
821 ARMv7-based SoCs.
822
823config GPIO_IDT3243X
824 tristate "IDT 79RC3243X GPIO support"
825 depends on MIKROTIK_RB532 || COMPILE_TEST
826 select GPIO_GENERIC
827 select GPIOLIB_IRQCHIP
828 help
829 Select this option to enable GPIO driver for
830 IDT 79RC3243X-based devices like Mikrotik RB532.
831
832 To compile this driver as a module, choose M here: the module will
833 be called gpio-idt3243x.
834
835endmenu
836
837menu "Port-mapped I/O GPIO drivers"
838 depends on X86 # Unconditional I/O space access
839
840config GPIO_I8255
841 tristate
842 select GPIO_REGMAP
843 help
844 Enables support for the i8255 interface library functions. The i8255
845 interface library provides functions to facilitate communication with
846 interfaces compatible with the venerable Intel 8255 Programmable
847 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
848 in the early 1970s but compatible interfaces are nowadays typically
849 found embedded in larger VLSI processing chips and FPGA components.
850
851 If built as a module its name will be gpio-i8255.
852
853config GPIO_104_DIO_48E
854 tristate "ACCES 104-DIO-48E GPIO support"
855 depends on PC104
856 select ISA_BUS_API
857 select REGMAP_MMIO
858 select REGMAP_IRQ
859 select GPIOLIB_IRQCHIP
860 select GPIO_I8255
861 help
862 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
863 104-DIO-24E). The base port addresses for the devices may be
864 configured via the base module parameter. The interrupt line numbers
865 for the devices may be configured via the irq module parameter.
866
867config GPIO_104_IDIO_16
868 tristate "ACCES 104-IDIO-16 GPIO support"
869 depends on PC104
870 select ISA_BUS_API
871 select GPIOLIB_IRQCHIP
872 select GPIO_IDIO_16
873 help
874 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
875 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
876 base port addresses for the devices may be configured via the base
877 module parameter. The interrupt line numbers for the devices may be
878 configured via the irq module parameter.
879
880config GPIO_104_IDI_48
881 tristate "ACCES 104-IDI-48 GPIO support"
882 depends on PC104
883 select ISA_BUS_API
884 select REGMAP_MMIO
885 select REGMAP_IRQ
886 select GPIOLIB_IRQCHIP
887 select GPIO_REGMAP
888 help
889 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
890 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
891 the devices may be configured via the base module parameter. The
892 interrupt line numbers for the devices may be configured via the irq
893 module parameter.
894
895config GPIO_F7188X
896 tristate "Fintek and Nuvoton Super-I/O GPIO support"
897 help
898 This option enables support for GPIOs found on Fintek Super-I/O
899 chips F71869, F71869A, F71882FG, F71889F and F81866.
900 As well as Nuvoton Super-I/O chip NCT6116D.
901
902 To compile this driver as a module, choose M here: the module will
903 be called f7188x-gpio.
904
905config GPIO_GPIO_MM
906 tristate "Diamond Systems GPIO-MM GPIO support"
907 depends on PC104
908 select ISA_BUS_API
909 select REGMAP_MMIO
910 select GPIO_I8255
911 help
912 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
913
914 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
915 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
916 support for these 48 channels of digital I/O.
917
918 The base port addresses for the devices may be configured via the base
919 array module parameter.
920
921config GPIO_IT87
922 tristate "IT87xx GPIO support"
923 help
924 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
925
926 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
927 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
928 well.
929
930 To compile this driver as a module, choose M here: the module will
931 be called gpio_it87.
932
933config GPIO_SCH
934 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
935 depends on (X86 || COMPILE_TEST) && ACPI
936 depends on LPC_SCH
937 select GPIOLIB_IRQCHIP
938 help
939 Say yes here to support GPIO interface on Intel Poulsbo SCH,
940 Intel Tunnel Creek processor, Intel Centerton processor or
941 Intel Quark X1000 SoC.
942
943 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
944 powered by the core power rail and are turned off during sleep
945 modes (S3 and higher). The remaining four GPIOs are powered by
946 the Intel SCH suspend power supply. These GPIOs remain
947 active during S3. The suspend-powered GPIOs can be used to wake the
948 system from the Suspend-to-RAM state.
949
950 The Intel Tunnel Creek processor has 5 GPIOs powered by the
951 core power rail and 9 from suspend power supply.
952
953 The Intel Centerton processor has a total of 30 GPIO pins.
954 Twenty-one are powered by the core power rail and 9 from the
955 suspend power supply.
956
957 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
958 power well and 6 from the suspend power well.
959
960config GPIO_SCH311X
961 tristate "SMSC SCH311x SuperI/O GPIO"
962 help
963 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
964 SCH3116 "Super I/O" chipsets.
965
966 To compile this driver as a module, choose M here: the module will
967 be called gpio-sch311x.
968
969config GPIO_TS5500
970 tristate "TS-5500 DIO blocks and compatibles"
971 depends on TS5500 || COMPILE_TEST
972 help
973 This driver supports Digital I/O exposed by pin blocks found on some
974 Technologic Systems platforms. It includes, but is not limited to, 3
975 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
976 LCD port.
977
978config GPIO_WINBOND
979 tristate "Winbond Super I/O GPIO support"
980 select ISA_BUS_API
981 help
982 This option enables support for GPIOs found on Winbond Super I/O
983 chips.
984 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
985 supported.
986
987 You will need to provide a module parameter "gpios", or a
988 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
989 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
990
991 To compile this driver as a module, choose M here: the module will
992 be called gpio-winbond.
993
994config GPIO_WS16C48
995 tristate "WinSystems WS16C48 GPIO support"
996 select ISA_BUS_API
997 select GPIOLIB_IRQCHIP
998 help
999 Enables GPIO support for the WinSystems WS16C48. The base port
1000 addresses for the devices may be configured via the base module
1001 parameter. The interrupt line numbers for the devices may be
1002 configured via the irq module parameter.
1003
1004endmenu
1005
1006menu "I2C GPIO expanders"
1007 depends on I2C
1008
1009config GPIO_ADNP
1010 tristate "Avionic Design N-bit GPIO expander"
1011 depends on OF_GPIO
1012 select GPIOLIB_IRQCHIP
1013 help
1014 This option enables support for N GPIOs found on Avionic Design
1015 I2C GPIO expanders. The register space will be extended by powers
1016 of two, so the controller will need to accommodate for that. For
1017 example: if a controller provides 48 pins, 6 registers will be
1018 enough to represent all pins, but the driver will assume a
1019 register layout for 64 pins (8 registers).
1020
1021config GPIO_FXL6408
1022 tristate "FXL6408 I2C GPIO expander"
1023 select GPIO_REGMAP
1024 select REGMAP_I2C
1025 help
1026 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1027
1028 To compile this driver as a module, choose M here: the module will
1029 be called gpio-fxl6408.
1030
1031config GPIO_GW_PLD
1032 tristate "Gateworks PLD GPIO Expander"
1033 depends on OF_GPIO
1034 help
1035 Say yes here to provide access to the Gateworks I2C PLD GPIO
1036 Expander. This is used at least on the Cambria GW2358-4.
1037
1038config GPIO_MAX7300
1039 tristate "Maxim MAX7300 GPIO expander"
1040 select GPIO_MAX730X
1041 help
1042 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1043
1044config GPIO_MAX732X
1045 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1046 help
1047 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1048 Port Expanders. Each IO port on these chips has a fixed role of
1049 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1050 Input and Output (designed by 'P'). The combinations are listed
1051 below:
1052
1053 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1054 max7322 (4I4O), max7323 (4P4O)
1055
1056 16 bits: max7324 (8I8O), max7325 (8P8O),
1057 max7326 (4I12O), max7327 (4P12O)
1058
1059 Board setup code must specify the model to use, and the start
1060 number for these GPIOs.
1061
1062config GPIO_MAX732X_IRQ
1063 bool "Interrupt controller support for MAX732x"
1064 depends on GPIO_MAX732X=y
1065 select GPIOLIB_IRQCHIP
1066 help
1067 Say yes here to enable the max732x to be used as an interrupt
1068 controller. It requires the driver to be built in the kernel.
1069
1070config GPIO_PCA953X
1071 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1072 select REGMAP_I2C
1073 help
1074 Say yes here to provide access to several register-oriented
1075 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1076 models include:
1077
1078 4 bits: pca9536, pca9537
1079
1080 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1081 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1082
1083 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1084 tca6416
1085
1086 24 bits: tca6424
1087
1088 40 bits: pca9505, pca9698
1089
1090config GPIO_PCA953X_IRQ
1091 bool "Interrupt controller support for PCA953x"
1092 depends on GPIO_PCA953X
1093 select GPIOLIB_IRQCHIP
1094 help
1095 Say yes here to enable the pca953x to be used as an interrupt
1096 controller.
1097
1098config GPIO_PCA9570
1099 tristate "PCA9570 4-Bit I2C GPO expander"
1100 help
1101 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1102
1103 To compile this driver as a module, choose M here: the module will
1104 be called gpio-pca9570.
1105
1106config GPIO_PCF857X
1107 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1108 select GPIOLIB_IRQCHIP
1109 select IRQ_DOMAIN
1110 help
1111 Say yes here to provide access to most "quasi-bidirectional" I2C
1112 GPIO expanders used for additional digital outputs or inputs.
1113 Most of these parts are from NXP, though TI is a second source for
1114 some of them. Compatible models include:
1115
1116 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1117 pca9670, pca9672, pca9674, pca9674a,
1118 max7328, max7329
1119
1120 16 bits: pcf8575, pcf8575c, pca8575,
1121 pca9671, pca9673, pca9675
1122
1123 Your board setup code will need to declare the expanders in
1124 use, and assign numbers to the GPIOs they expose. Those GPIOs
1125 can then be used from drivers and other kernel code, just like
1126 other GPIOs, but only accessible from task contexts.
1127
1128 This driver provides an in-kernel interface to those GPIOs using
1129 platform-neutral GPIO calls.
1130
1131config GPIO_TPIC2810
1132 tristate "TPIC2810 8-Bit I2C GPO expander"
1133 help
1134 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1135
1136 To compile this driver as a module, choose M here: the module will
1137 be called gpio-tpic2810.
1138
1139config GPIO_TS4900
1140 tristate "Technologic Systems FPGA I2C GPIO"
1141 depends on SOC_IMX6 || COMPILE_TEST
1142 select REGMAP_I2C
1143 help
1144 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1145 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1146
1147endmenu
1148
1149menu "MFD GPIO expanders"
1150
1151config GPIO_ADP5520
1152 tristate "GPIO Support for ADP5520 PMIC"
1153 depends on PMIC_ADP5520
1154 help
1155 This option enables support for on-chip GPIO found
1156 on Analog Devices ADP5520 PMICs.
1157
1158config GPIO_ALTERA_A10SR
1159 tristate "Altera Arria10 System Resource GPIO"
1160 depends on MFD_ALTERA_A10SR
1161 help
1162 Driver for Arria10 Development Kit GPIO expansion which
1163 includes reads of pushbuttons and DIP switches as well
1164 as writes to LEDs.
1165
1166config GPIO_ARIZONA
1167 tristate "Wolfson Microelectronics Arizona class devices"
1168 depends on MFD_ARIZONA
1169 help
1170 Support for GPIOs on Wolfson Arizona class devices.
1171
1172config GPIO_BD71815
1173 tristate "ROHM BD71815 PMIC GPIO support"
1174 depends on MFD_ROHM_BD71828
1175 help
1176 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1177 available on the ROHM PMIC.
1178
1179 This driver can also be built as a module. If so, the module
1180 will be called gpio-bd71815.
1181
1182config GPIO_BD71828
1183 tristate "ROHM BD71828 GPIO support"
1184 depends on MFD_ROHM_BD71828
1185 help
1186 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1187 available on the ROHM PMIC in total. The GPIOs are limited to
1188 outputs only and pins must be configured to GPIO outputs by
1189 OTP. Enable this only if you want to use these pins as outputs.
1190
1191 This driver can also be built as a module. If so, the module
1192 will be called gpio-bd71828.
1193
1194config GPIO_BD9571MWV
1195 tristate "ROHM BD9571 GPIO support"
1196 depends on MFD_BD9571MWV
1197 help
1198 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1199 available on the ROHM PMIC in total, both of which can also
1200 generate interrupts.
1201
1202 This driver can also be built as a module. If so, the module
1203 will be called gpio-bd9571mwv.
1204
1205config GPIO_CRYSTAL_COVE
1206 tristate "GPIO support for Crystal Cove PMIC"
1207 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1208 select GPIOLIB_IRQCHIP
1209 help
1210 Support for GPIO pins on Crystal Cove PMIC.
1211
1212 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1213 inside.
1214
1215 This driver can also be built as a module. If so, the module will be
1216 called gpio-crystalcove.
1217
1218config GPIO_CS5535
1219 tristate "AMD CS5535/CS5536 GPIO support"
1220 depends on X86 || MIPS || COMPILE_TEST
1221 depends on MFD_CS5535
1222 help
1223 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1224 can be used for quite a number of things. The CS5535/6 is found on
1225 AMD Geode and Lemote Yeeloong devices.
1226
1227 If unsure, say N.
1228
1229config GPIO_DA9052
1230 tristate "Dialog DA9052 GPIO"
1231 depends on PMIC_DA9052
1232 help
1233 Say yes here to enable the GPIO driver for the DA9052 chip.
1234
1235config GPIO_DA9055
1236 tristate "Dialog Semiconductor DA9055 GPIO"
1237 depends on MFD_DA9055
1238 help
1239 Say yes here to enable the GPIO driver for the DA9055 chip.
1240
1241 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1242 be controlled by this driver.
1243
1244 If driver is built as a module it will be called gpio-da9055.
1245
1246config GPIO_DLN2
1247 tristate "Diolan DLN2 GPIO support"
1248 depends on MFD_DLN2
1249 select GPIOLIB_IRQCHIP
1250
1251 help
1252 Select this option to enable GPIO driver for the Diolan DLN2
1253 board.
1254
1255 This driver can also be built as a module. If so, the module
1256 will be called gpio-dln2.
1257
1258config HTC_EGPIO
1259 bool "HTC EGPIO support"
1260 depends on ARM
1261 help
1262 This driver supports the CPLD egpio chip present on
1263 several HTC phones. It provides basic support for input
1264 pins, output pins, and IRQs.
1265
1266config GPIO_ELKHARTLAKE
1267 tristate "Intel Elkhart Lake PSE GPIO support"
1268 depends on X86 || COMPILE_TEST
1269 select GPIO_TANGIER
1270 help
1271 Select this option to enable GPIO support for Intel Elkhart Lake
1272 PSE GPIO IP.
1273
1274 To compile this driver as a module, choose M here: the module will
1275 be called gpio-elkhartlake.
1276
1277config GPIO_JANZ_TTL
1278 tristate "Janz VMOD-TTL Digital IO Module"
1279 depends on MFD_JANZ_CMODIO
1280 help
1281 This enables support for the Janz VMOD-TTL Digital IO module.
1282 This driver provides support for driving the pins in output
1283 mode only. Input mode is not supported.
1284
1285config GPIO_KEMPLD
1286 tristate "Kontron ETX / COMexpress GPIO"
1287 depends on MFD_KEMPLD
1288 help
1289 This enables support for the PLD GPIO interface on some Kontron ETX
1290 and COMexpress (ETXexpress) modules.
1291
1292 This driver can also be built as a module. If so, the module will be
1293 called gpio-kempld.
1294
1295config GPIO_LJCA
1296 tristate "INTEL La Jolla Cove Adapter GPIO support"
1297 depends on MFD_LJCA
1298 select GPIOLIB_IRQCHIP
1299 default MFD_LJCA
1300 help
1301 Select this option to enable GPIO driver for the INTEL
1302 La Jolla Cove Adapter (LJCA) board.
1303
1304 This driver can also be built as a module. If so, the module
1305 will be called gpio-ljca.
1306
1307config GPIO_LP3943
1308 tristate "TI/National Semiconductor LP3943 GPIO expander"
1309 depends on MFD_LP3943
1310 help
1311 GPIO driver for LP3943 MFD.
1312 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1313 Open drain outputs are required for this usage.
1314
1315config GPIO_LP873X
1316 tristate "TI LP873X GPO"
1317 depends on MFD_TI_LP873X
1318 help
1319 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1320 on LP873X PMICs.
1321
1322 This driver can also be built as a module. If so, the module will be
1323 called gpio-lp873x.
1324
1325config GPIO_LP87565
1326 tristate "TI LP87565 GPIO"
1327 depends on MFD_TI_LP87565
1328 help
1329 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1330 on LP87565 PMICs.
1331
1332 This driver can also be built as a module. If so, the module will be
1333 called gpio-lp87565.
1334
1335config GPIO_MADERA
1336 tristate "Cirrus Logic Madera class codecs"
1337 depends on PINCTRL_MADERA
1338 help
1339 Support for GPIOs on Cirrus Logic Madera class codecs.
1340
1341config GPIO_MAX77620
1342 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1343 depends on MFD_MAX77620
1344 select GPIOLIB_IRQCHIP
1345 help
1346 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1347 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1348 driver also provides interrupt support for each of the GPIOs.
1349 Say yes here to enable the max77620 to be used as GPIO controller.
1350
1351config GPIO_MAX77650
1352 tristate "Maxim MAX77650/77651 GPIO support"
1353 depends on MFD_MAX77650
1354 help
1355 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1356 These chips have a single pin that can be configured as GPIO.
1357
1358config GPIO_PALMAS
1359 bool "TI PALMAS series PMICs GPIO"
1360 depends on MFD_PALMAS
1361 help
1362 Select this option to enable GPIO driver for the TI PALMAS
1363 series chip family.
1364
1365config GPIO_PMIC_EIC_SPRD
1366 tristate "Spreadtrum PMIC EIC support"
1367 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1368 depends on OF_GPIO
1369 select GPIOLIB_IRQCHIP
1370 help
1371 Say yes here to support Spreadtrum PMIC EIC device.
1372
1373config GPIO_RC5T583
1374 bool "RICOH RC5T583 GPIO"
1375 depends on MFD_RC5T583
1376 help
1377 Select this option to enable GPIO driver for the Ricoh RC5T583
1378 chip family.
1379 This driver provides the support for driving/reading the GPIO pins
1380 of RC5T583 device through standard GPIO library.
1381
1382config GPIO_SL28CPLD
1383 tristate "Kontron sl28cpld GPIO support"
1384 depends on MFD_SL28CPLD || COMPILE_TEST
1385 select GPIO_REGMAP
1386 select GPIOLIB_IRQCHIP
1387 select REGMAP_IRQ
1388 help
1389 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1390
1391 This driver can also be built as a module. If so, the module will be
1392 called gpio-sl28cpld.
1393
1394config GPIO_STMPE
1395 bool "STMPE GPIOs"
1396 depends on MFD_STMPE
1397 depends on OF_GPIO
1398 select GPIOLIB_IRQCHIP
1399 help
1400 This enables support for the GPIOs found on the STMPE I/O
1401 Expanders.
1402
1403config GPIO_TC3589X
1404 bool "TC3589X GPIOs"
1405 depends on MFD_TC3589X
1406 depends on OF_GPIO
1407 select GPIOLIB_IRQCHIP
1408 help
1409 This enables support for the GPIOs found on the TC3589X
1410 I/O Expander.
1411
1412config GPIO_TIMBERDALE
1413 bool "Support for timberdale GPIO IP"
1414 depends on MFD_TIMBERDALE
1415 help
1416 Add support for the GPIO IP in the timberdale FPGA.
1417
1418config GPIO_TN48M_CPLD
1419 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1420 depends on MFD_TN48M_CPLD
1421 select GPIO_REGMAP
1422 help
1423 This enables support for the GPIOs found on the Delta
1424 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1425 they are input-only or output-only type.
1426
1427 This driver can also be built as a module. If so, the
1428 module will be called gpio-tn48m.
1429
1430config GPIO_TPS65086
1431 tristate "TI TPS65086 GPO"
1432 depends on MFD_TPS65086
1433 help
1434 This driver supports the GPO on TI TPS65086x PMICs.
1435
1436config GPIO_TPS65218
1437 tristate "TPS65218 GPIO"
1438 depends on MFD_TPS65218
1439 help
1440 Select this option to enable GPIO driver for the TPS65218
1441 chip family.
1442
1443config GPIO_TPS6586X
1444 bool "TPS6586X GPIO"
1445 depends on MFD_TPS6586X
1446 help
1447 Select this option to enable GPIO driver for the TPS6586X
1448 chip family.
1449
1450config GPIO_TPS65910
1451 bool "TPS65910 GPIO"
1452 depends on MFD_TPS65910
1453 help
1454 Select this option to enable GPIO driver for the TPS65910
1455 chip family.
1456
1457config GPIO_TPS65912
1458 tristate "TI TPS65912 GPIO"
1459 depends on MFD_TPS65912
1460 help
1461 This driver supports TPS65912 GPIO chip.
1462
1463config GPIO_TPS68470
1464 tristate "TPS68470 GPIO"
1465 depends on INTEL_SKL_INT3472
1466 help
1467 Select this option to enable GPIO driver for the TPS68470
1468 chip family.
1469 There are 7 GPIOs and few sensor-related GPIOs supported
1470 by the TPS68470. While the 7 GPIOs can be configured as
1471 input or output as appropriate, the sensor related GPIOs
1472 are "output only" GPIOs.
1473
1474config GPIO_TQMX86
1475 tristate "TQ-Systems QTMX86 GPIO"
1476 depends on MFD_TQMX86 || COMPILE_TEST
1477 depends on HAS_IOPORT_MAP
1478 select GPIOLIB_IRQCHIP
1479 help
1480 This driver supports GPIO on the TQMX86 IO controller.
1481
1482config GPIO_TWL4030
1483 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1484 depends on TWL4030_CORE
1485 help
1486 Say yes here to access the GPIO signals of various multi-function
1487 power management chips from Texas Instruments.
1488
1489config GPIO_TWL6040
1490 tristate "TWL6040 GPO"
1491 depends on TWL6040_CORE
1492 help
1493 Say yes here to access the GPO signals of twl6040
1494 audio chip from Texas Instruments.
1495
1496config GPIO_WHISKEY_COVE
1497 tristate "GPIO support for Whiskey Cove PMIC"
1498 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1499 select GPIOLIB_IRQCHIP
1500 help
1501 Support for GPIO pins on Whiskey Cove PMIC.
1502
1503 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1504 inside.
1505
1506 This driver can also be built as a module. If so, the module will be
1507 called gpio-wcove.
1508
1509config GPIO_WM831X
1510 tristate "WM831x GPIOs"
1511 depends on MFD_WM831X
1512 help
1513 Say yes here to access the GPIO signals of WM831x power management
1514 chips from Wolfson Microelectronics.
1515
1516config GPIO_WM8350
1517 tristate "WM8350 GPIOs"
1518 depends on MFD_WM8350
1519 help
1520 Say yes here to access the GPIO signals of WM8350 power management
1521 chips from Wolfson Microelectronics.
1522
1523config GPIO_WM8994
1524 tristate "WM8994 GPIOs"
1525 depends on MFD_WM8994
1526 help
1527 Say yes here to access the GPIO signals of WM8994 audio hub
1528 CODECs from Wolfson Microelectronics.
1529
1530endmenu
1531
1532menu "PCI GPIO expanders"
1533 depends on PCI
1534
1535config GPIO_AMD8111
1536 tristate "AMD 8111 GPIO driver"
1537 depends on X86 || COMPILE_TEST
1538 depends on HAS_IOPORT_MAP
1539 help
1540 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1541
1542 Note that usually system firmware/ACPI handles GPIO pins on their
1543 own and users might easily break their systems with uncareful usage
1544 of this driver!
1545
1546 If unsure, say N
1547
1548config GPIO_BT8XX
1549 tristate "BT8XX GPIO abuser"
1550 depends on VIDEO_BT848=n
1551 help
1552 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1553 as a cheap PCI GPIO card.
1554
1555 This chip can be found on Miro, Hauppauge and STB TV-cards.
1556
1557 The card needs to be physically altered for using it as a
1558 GPIO card. For more information on how to build a GPIO card
1559 from a BT8xx TV card, see the documentation file at
1560 Documentation/driver-api/gpio/bt8xxgpio.rst
1561
1562 If unsure, say N.
1563
1564config GPIO_MERRIFIELD
1565 tristate "Intel Merrifield GPIO support"
1566 depends on X86_INTEL_MID
1567 select GPIO_TANGIER
1568 help
1569 Say Y here to support Intel Merrifield GPIO.
1570
1571config GPIO_MLXBF
1572 tristate "Mellanox BlueField SoC GPIO"
1573 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1574 select GPIO_GENERIC
1575 help
1576 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1577
1578config GPIO_MLXBF2
1579 tristate "Mellanox BlueField 2 SoC GPIO"
1580 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1581 select GPIO_GENERIC
1582 select GPIOLIB_IRQCHIP
1583 help
1584 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1585
1586config GPIO_ML_IOH
1587 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1588 depends on X86 || COMPILE_TEST
1589 select GENERIC_IRQ_CHIP
1590 help
1591 ML7213 is companion chip for Intel Atom E6xx series.
1592 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1593 Hub) which is for IVI (In-Vehicle Infotainment) use.
1594 This driver can access the IOH's GPIO device.
1595
1596config GPIO_PCH
1597 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1598 depends on X86_32 || MIPS || COMPILE_TEST
1599 select GENERIC_IRQ_CHIP
1600 help
1601 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1602 which is an IOH (Input/Output Hub) for x86 embedded processor.
1603 This driver can access PCH GPIO device.
1604
1605 This driver also can be used for LAPIS Semiconductor IOH (Input/
1606 Output Hub), ML7223 and ML7831.
1607 ML7223 IOH is for MP (Media Phone) use.
1608 ML7831 IOH is for general purpose use.
1609 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1610 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1611
1612config GPIO_PCI_IDIO_16
1613 tristate "ACCES PCI-IDIO-16 GPIO support"
1614 select GPIOLIB_IRQCHIP
1615 select GPIO_IDIO_16
1616 help
1617 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1618 generated when any of the inputs change state (low to high or high to
1619 low). Input filter control is not supported by this driver, and the
1620 input filters are deactivated by this driver.
1621
1622config GPIO_PCIE_IDIO_24
1623 tristate "ACCES PCIe-IDIO-24 GPIO support"
1624 select GPIOLIB_IRQCHIP
1625 help
1626 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1627 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1628 when any of the inputs change state (low to high or high to low).
1629 Input filter control is not supported by this driver, and the input
1630 filters are deactivated by this driver.
1631
1632config GPIO_RDC321X
1633 tristate "RDC R-321x GPIO support"
1634 select MFD_CORE
1635 select MFD_RDC321X
1636 help
1637 Support for the RDC R321x SoC GPIOs over southbridge
1638 PCI configuration space.
1639
1640config GPIO_SODAVILLE
1641 bool "Intel Sodaville GPIO support"
1642 depends on X86 && OF
1643 select GPIO_GENERIC
1644 select GENERIC_IRQ_CHIP
1645 help
1646 Say Y here to support Intel Sodaville GPIO.
1647
1648endmenu
1649
1650menu "SPI GPIO expanders"
1651 depends on SPI_MASTER
1652
1653config GPIO_74X164
1654 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1655 depends on OF_GPIO
1656 help
1657 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1658 shift registers. This driver can be used to provide access
1659 to more GPIO outputs.
1660
1661config GPIO_MAX3191X
1662 tristate "Maxim MAX3191x industrial serializer"
1663 select CRC8
1664 help
1665 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1666 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1667 chip to make 8 digital 24V inputs available via SPI. Supports
1668 CRC checksums to guard against electromagnetic interference,
1669 as well as undervoltage and overtemperature detection.
1670
1671config GPIO_MAX7301
1672 tristate "Maxim MAX7301 GPIO expander"
1673 select GPIO_MAX730X
1674 help
1675 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1676
1677config GPIO_MC33880
1678 tristate "Freescale MC33880 high-side/low-side switch"
1679 help
1680 SPI driver for Freescale MC33880 high-side/low-side switch.
1681 This provides GPIO interface supporting inputs and outputs.
1682
1683config GPIO_PISOSR
1684 tristate "Generic parallel-in/serial-out shift register"
1685 help
1686 GPIO driver for SPI compatible parallel-in/serial-out shift
1687 registers. These are input only devices.
1688
1689config GPIO_XRA1403
1690 tristate "EXAR XRA1403 16-bit GPIO expander"
1691 select REGMAP_SPI
1692 help
1693 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1694
1695config GPIO_MOXTET
1696 tristate "Turris Mox Moxtet bus GPIO expander"
1697 depends on MOXTET
1698 help
1699 Say yes here if you are building for the Turris Mox router.
1700 This is the driver needed for configuring the GPIOs via the Moxtet
1701 bus. For example the Mox module with SFP cage needs this driver
1702 so that phylink can use corresponding GPIOs.
1703
1704endmenu
1705
1706menu "USB GPIO expanders"
1707 depends on USB
1708
1709config GPIO_VIPERBOARD
1710 tristate "Viperboard GPIO a & b support"
1711 depends on MFD_VIPERBOARD
1712 help
1713 Say yes here to access the GPIO signals of Nano River
1714 Technologies Viperboard. There are two GPIO chips on the
1715 board: gpioa and gpiob.
1716 See viperboard API specification and Nano
1717 River Tech's viperboard.h for detailed meaning
1718 of the module parameters.
1719
1720endmenu
1721
1722menu "Virtual GPIO drivers"
1723
1724config GPIO_AGGREGATOR
1725 tristate "GPIO Aggregator"
1726 help
1727 Say yes here to enable the GPIO Aggregator, which provides a way to
1728 aggregate existing GPIO lines into a new virtual GPIO chip.
1729 This can serve the following purposes:
1730 - Assign permissions for a collection of GPIO lines to a user,
1731 - Export a collection of GPIO lines to a virtual machine,
1732 - Provide a generic driver for a GPIO-operated device in an
1733 industrial control context, to be operated from userspace using
1734 the GPIO chardev interface.
1735
1736config GPIO_LATCH
1737 tristate "GPIO latch driver"
1738 help
1739 Say yes here to enable a driver for GPIO multiplexers based on latches
1740 connected to other GPIOs.
1741
1742config GPIO_MOCKUP
1743 tristate "GPIO Testing Driver"
1744 select IRQ_SIM
1745 help
1746 This enables GPIO Testing driver, which provides a way to test GPIO
1747 subsystem through sysfs (or char device) and debugfs.
1748 User could use it through the script in
1749 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1750 it.
1751
1752config GPIO_VIRTIO
1753 tristate "VirtIO GPIO support"
1754 depends on VIRTIO
1755 select GPIOLIB_IRQCHIP
1756 help
1757 Say Y here to enable guest support for virtio-based GPIO controllers.
1758
1759 These virtual GPIOs can be routed to real GPIOs or attached to
1760 simulators on the host (like QEMU).
1761
1762config GPIO_SIM
1763 tristate "GPIO Simulator Module"
1764 select IRQ_SIM
1765 select CONFIGFS_FS
1766 help
1767 This enables the GPIO simulator - a configfs-based GPIO testing
1768 driver.
1769
1770endmenu
1771
1772endif