tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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
9config HAVE_SHARED_GPIOS
10 bool
11
12menuconfig GPIOLIB
13 bool "GPIO Support"
14 help
15 This enables GPIO support through the generic GPIO library.
16 You only need to enable this if you also want to enable
17 one or more of the GPIO drivers below.
18
19 If unsure, say N.
20
21if GPIOLIB
22
23config GPIOLIB_FASTPATH_LIMIT
24 int "Maximum number of GPIOs for fast path"
25 range 32 512
26 default 512
27 help
28 This adjusts the point at which certain APIs will switch from
29 using a stack allocated buffer to a dynamically allocated buffer.
30
31 You shouldn't need to change this unless you really need to
32 optimize either stack space or performance. Change this carefully
33 since setting an incorrect value could cause stack corruption.
34
35config OF_GPIO
36 def_bool y
37 depends on OF
38 depends on HAS_IOMEM
39
40config GPIO_ACPI
41 def_bool y
42 depends on ACPI
43
44config GPIOLIB_IRQCHIP
45 select IRQ_DOMAIN
46 bool
47
48config GPIO_SHARED
49 def_bool y
50 depends on HAVE_SHARED_GPIOS || COMPILE_TEST
51 select AUXILIARY_BUS
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 depends on GPIO_CDEV
99 help
100 Say Y here to support version 1 of the GPIO CDEV ABI.
101
102 This ABI version is deprecated.
103 Please use the latest ABI for new developments.
104
105config GPIO_GENERIC
106 depends on HAS_IOMEM # Only for IOMEM drivers
107 tristate
108
109config GPIO_REGMAP
110 select REGMAP
111 tristate
112
113config GPIO_SWNODE_UNDEFINED
114 bool
115 help
116 This adds a special place holder for software nodes to contain an
117 undefined GPIO reference, this is primarily used by SPI to allow a
118 list of GPIO chip selects to mark a certain chip select as being
119 controlled the SPI device's internal chip select mechanism and not
120 a GPIO.
121
122# put drivers in the right section, in alphabetical order
123
124# This symbol is selected by both I2C and SPI expanders
125config GPIO_MAX730X
126 tristate
127
128config GPIO_IDIO_16
129 tristate
130 select REGMAP_IRQ
131 select GPIOLIB_IRQCHIP
132 select GPIO_REGMAP
133 help
134 Enables support for the idio-16 library functions. The idio-16 library
135 provides functions to facilitate communication with devices within the
136 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
137
138 If built as a module its name will be gpio-idio-16.
139
140menu "Memory mapped GPIO drivers"
141 depends on HAS_IOMEM
142
143config GPIO_74XX_MMIO
144 tristate "GPIO driver for 74xx-ICs with MMIO access"
145 depends on OF
146 select GPIO_GENERIC
147 help
148 Say yes here to support GPIO functionality for 74xx-compatible ICs
149 with MMIO access. Compatible models include:
150 1 bit: 741G125 (Input), 741G74 (Output)
151 2 bits: 742G125 (Input), 7474 (Output)
152 4 bits: 74125 (Input), 74175 (Output)
153 6 bits: 74365 (Input), 74174 (Output)
154 8 bits: 74244 (Input), 74273 (Output)
155 16 bits: 741624 (Input), 7416374 (Output)
156
157config GPIO_ALTERA
158 tristate "Altera GPIO"
159 select GPIOLIB_IRQCHIP
160 help
161 Say Y or M here to build support for the Altera PIO device.
162
163 If driver is built as a module it will be called gpio-altera.
164
165config GPIO_AMDPT
166 tristate "AMD Promontory GPIO support"
167 depends on ACPI
168 select GPIO_GENERIC
169 help
170 Driver for GPIO functionality on Promontory IOHub.
171 Requires ACPI ASL code to enumerate as a platform device.
172
173config GPIO_ASPEED
174 tristate "Aspeed GPIO support"
175 depends on ARCH_ASPEED || COMPILE_TEST
176 select GPIOLIB_IRQCHIP
177 help
178 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
179
180config GPIO_ASPEED_SGPIO
181 bool "Aspeed SGPIO support"
182 depends on ARCH_ASPEED || COMPILE_TEST
183 select GPIO_GENERIC
184 select GPIOLIB_IRQCHIP
185 help
186 Say Y here to support Aspeed AST2500 SGPIO functionality.
187
188config GPIO_ATH79
189 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
190 default y if ATH79
191 depends on ATH79 || COMPILE_TEST
192 select GPIO_GENERIC
193 select GPIOLIB_IRQCHIP
194 help
195 Select this option to enable GPIO driver for
196 Atheros AR71XX/AR724X/AR913X SoC devices.
197
198config GPIO_RASPBERRYPI_EXP
199 tristate "Raspberry Pi 3 GPIO Expander"
200 default RASPBERRYPI_FIRMWARE
201 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
202 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
203 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
204 help
205 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
206 the firmware mailbox to communicate with VideoCore on BCM283x chips.
207
208config GPIO_BCM_KONA
209 bool "Broadcom Kona GPIO"
210 depends on ARCH_BCM_MOBILE || COMPILE_TEST
211 select GPIOLIB_IRQCHIP
212 help
213 Turn on GPIO support for Broadcom "Kona" chips.
214
215config GPIO_BCM_XGS_IPROC
216 tristate "BRCM XGS iProc GPIO support"
217 depends on ARCH_BCM_IPROC || COMPILE_TEST
218 select GPIO_GENERIC
219 select GPIOLIB_IRQCHIP
220 default ARCH_BCM_IPROC
221 help
222 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
223
224config GPIO_BLZP1600
225 tristate "Blaize BLZP1600 GPIO support"
226 default y if ARCH_BLAIZE
227 depends on ARCH_BLAIZE || COMPILE_TEST
228 select GPIO_GENERIC
229 select GPIOLIB_IRQCHIP
230 help
231 Say Y or M here to add support for the Blaize BLZP1600 GPIO device.
232 The controller is based on the Verisilicon Microelectronics GPIO APB v0.2
233 IP block.
234
235config GPIO_BRCMSTB
236 tristate "BRCMSTB GPIO support"
237 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
238 depends on ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST
239 depends on OF
240 select GPIO_GENERIC
241 select IRQ_DOMAIN
242 help
243 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
244
245config GPIO_BY_PINCTRL
246 tristate "GPIO support based on a pure pin control backend"
247 depends on GPIOLIB
248 help
249 Support for generic GPIO handling based on top of pin control.
250 Traditionally, firmware creates a GPIO interface or a pin
251 controller interface and we have a driver to support it. But
252 in SCMI, the pin control interface is generic and we can
253 create a simple GPIO device based on the pin control interface
254 without doing anything custom.
255
256 This driver is used to access GPIOs over the ARM SCMI protocol.
257
258config GPIO_CADENCE
259 tristate "Cadence GPIO support"
260 depends on OF
261 select GPIO_GENERIC
262 select GPIOLIB_IRQCHIP
263 help
264 Say yes here to enable support for Cadence GPIO controller.
265
266config GPIO_CLPS711X
267 tristate "CLPS711X GPIO support"
268 depends on ARCH_CLPS711X || COMPILE_TEST
269 select GPIO_GENERIC
270 help
271 Say yes here to support GPIO on CLPS711X SoCs.
272
273config GPIO_DAVINCI
274 tristate "TI Davinci/Keystone GPIO support"
275 default y if ARCH_DAVINCI
276 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
277 select GPIOLIB_IRQCHIP
278 help
279 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
280
281config GPIO_DWAPB
282 tristate "Synopsys DesignWare APB GPIO driver"
283 select GPIO_GENERIC
284 select GPIOLIB_IRQCHIP
285 help
286 Say Y or M here to build support for the Synopsys DesignWare APB
287 GPIO block.
288
289config GPIO_EIC_SPRD
290 tristate "Spreadtrum EIC support"
291 depends on ARCH_SPRD || COMPILE_TEST
292 select GPIOLIB_IRQCHIP
293 help
294 Say yes here to support Spreadtrum EIC device.
295
296config GPIO_EM
297 tristate "Emma Mobile GPIO"
298 depends on ARCH_EMEV2 || COMPILE_TEST
299 help
300 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
301
302config GPIO_EN7523
303 tristate "Airoha GPIO support"
304 depends on ARCH_AIROHA
305 default ARCH_AIROHA
306 select GPIO_GENERIC
307 select GPIOLIB_IRQCHIP
308 help
309 Say Y or M here to support the GPIO controller block on the
310 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
311
312config GPIO_EP93XX
313 def_bool y
314 depends on ARCH_EP93XX || COMPILE_TEST
315 select GPIO_GENERIC
316 select GPIOLIB_IRQCHIP
317
318config GPIO_EXAR
319 tristate "Support for GPIO pins on XR17V352/354/358"
320 depends on SERIAL_8250_EXAR
321 select REGMAP_MMIO
322 help
323 Selecting this option will enable handling of GPIO pins present
324 on Exar XR17V352/354/358 chips.
325
326config GPIO_GE_FPGA
327 bool "GE FPGA based GPIO"
328 depends on GE_FPGA || COMPILE_TEST
329 select GPIO_GENERIC
330 help
331 Support for common GPIO functionality provided on some GE Single Board
332 Computers.
333
334 This driver provides basic support (configure as input or output, read
335 and write pin state) for GPIO implemented in a number of GE single
336 board computers.
337
338config GPIO_FTGPIO010
339 bool "Faraday FTGPIO010 GPIO"
340 depends on OF
341 select GPIO_GENERIC
342 select GPIOLIB_IRQCHIP
343 default (ARCH_GEMINI || ARCH_MOXART)
344 help
345 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
346 Cortina systems Gemini platforms, Moxa ART and others.
347
348config GPIO_GENERIC_PLATFORM
349 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
350 select GPIO_GENERIC
351 help
352 Say yes here to support basic platform_device memory-mapped GPIO controllers.
353
354config GPIO_GRANITERAPIDS
355 tristate "Intel Granite Rapids-D vGPIO support"
356 depends on X86 || COMPILE_TEST
357 select GPIOLIB_IRQCHIP
358 help
359 Select this to enable virtual GPIO support on platforms with the
360 following SoCs:
361
362 - Intel Granite Rapids-D
363
364 The driver enables basic GPIO functionality and implements interrupt
365 support. The virtual GPIO driver controls GPIO lines via a firmware
366 interface. The physical GPIO pins reside on device that is external
367 from the main SoC package, such as a BMC or a CPLD.
368
369 To compile this driver as a module, choose M here: the module will
370 be called gpio-graniterapids.
371
372config GPIO_GRGPIO
373 tristate "Aeroflex Gaisler GRGPIO support"
374 depends on OF || COMPILE_TEST
375 select GPIO_GENERIC
376 select GPIOLIB_IRQCHIP
377 help
378 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
379 VHDL IP core library.
380
381config GPIO_HISI
382 tristate "HiSilicon GPIO controller driver"
383 depends on ARM64 || COMPILE_TEST
384 select GPIO_GENERIC
385 select GPIOLIB_IRQCHIP
386 help
387 Say Y or M here to build support for the HiSilicon GPIO controller
388 driver GPIO block.
389 This GPIO controller supports double-edge interrupt and multi-core
390 concurrent access.
391
392config GPIO_HLWD
393 tristate "Nintendo Wii (Hollywood) GPIO"
394 depends on OF
395 select GPIO_GENERIC
396 select GPIOLIB_IRQCHIP
397 help
398 Select this to support the GPIO controller of the Nintendo Wii.
399
400 If unsure, say N.
401
402config GPIO_ICH
403 tristate "Intel ICH GPIO"
404 depends on (X86 && LPC_ICH) || (COMPILE_TEST && HAS_IOPORT)
405 help
406 Say yes here to support the GPIO functionality of a number of Intel
407 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
408 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
409 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
410
411 If unsure, say N.
412
413config GPIO_IMX_SCU
414 def_bool y
415 depends on IMX_SCU
416
417config GPIO_IXP4XX
418 bool "Intel IXP4xx GPIO"
419 depends on (ARCH_IXP4XX && OF) || COMPILE_TEST
420 select GPIO_GENERIC
421 select GPIOLIB_IRQCHIP
422 select IRQ_DOMAIN_HIERARCHY
423 help
424 Say yes here to support the GPIO functionality of a number of Intel
425 IXP4xx series of chips.
426
427 If unsure, say N.
428
429config GPIO_LOGICVC
430 tristate "Xylon LogiCVC GPIO support"
431 depends on MFD_SYSCON && OF
432 help
433 Say yes here to support GPIO functionality of the Xylon LogiCVC
434 programmable logic block.
435
436config GPIO_LOONGSON
437 bool "Loongson-2/3 GPIO support"
438 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
439 help
440 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
441
442config GPIO_LOONGSON_64BIT
443 tristate "Loongson 64 bit GPIO support"
444 depends on LOONGARCH || COMPILE_TEST
445 select GPIO_GENERIC
446 select GPIOLIB_IRQCHIP
447 help
448 Say yes here to support the GPIO functionality of a number of
449 Loongson series of chips. The Loongson GPIO controller supports
450 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
451 the remaining 56 are reused with other functions, with edge or
452 level triggered interrupts.
453
454config GPIO_LPC18XX
455 tristate "NXP LPC18XX/43XX GPIO support"
456 default y if ARCH_LPC18XX
457 depends on ARCH_LPC18XX || COMPILE_TEST
458 select IRQ_DOMAIN_HIERARCHY
459 select GPIOLIB_IRQCHIP
460 help
461 Select this option to enable GPIO driver for
462 NXP LPC18XX/43XX devices.
463
464config GPIO_LPC32XX
465 tristate "NXP LPC32XX GPIO support"
466 depends on ARCH_LPC32XX || COMPILE_TEST
467 depends on OF
468 help
469 Select this option to enable GPIO driver for
470 NXP LPC32XX devices.
471
472config GPIO_MB86S7X
473 tristate "GPIO support for Fujitsu MB86S7x Platforms"
474 help
475 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
476
477config GPIO_MENZ127
478 tristate "MEN 16Z127 GPIO support"
479 depends on MCB
480 select GPIO_GENERIC
481 help
482 Say yes here to support the MEN 16Z127 GPIO Controller.
483
484config GPIO_MM_LANTIQ
485 bool "Lantiq Memory mapped GPIOs"
486 depends on LANTIQ && SOC_XWAY
487 help
488 This enables support for memory mapped GPIOs on the External Bus Unit
489 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
490 created by attaching a 16-bit latch to the bus.
491
492config GPIO_MPC5200
493 def_bool y
494 depends on PPC_MPC52xx
495
496config GPIO_MPC8XXX
497 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
498 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
499 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
500 COMPILE_TEST
501 select GPIO_GENERIC
502 select GPIOLIB_IRQCHIP
503 help
504 Say Y here if you're going to use hardware that connects to the
505 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
506
507config GPIO_MT7621
508 bool "Mediatek MT7621 GPIO Support"
509 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
510 depends on OF
511 select GPIO_GENERIC
512 select GPIOLIB_IRQCHIP
513 help
514 Say yes here to support the Mediatek MT7621 SoC GPIO device.
515
516config GPIO_MVEBU
517 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
518 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
519 default PLAT_ORION || ARCH_MVEBU
520 select GENERIC_IRQ_CHIP
521 select REGMAP_MMIO
522
523config GPIO_MXC
524 tristate "i.MX GPIO support"
525 depends on ARCH_MXC || COMPILE_TEST
526 select GPIO_GENERIC
527 select GENERIC_IRQ_CHIP
528
529config GPIO_MXS
530 bool "Freescale MXS GPIO support" if COMPILE_TEST
531 depends on ARCH_MXS || COMPILE_TEST
532 default y if ARCH_MXS
533 select GPIO_GENERIC
534 select GENERIC_IRQ_CHIP
535
536config GPIO_NOMADIK
537 bool "Nomadik GPIO driver"
538 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
539 select GPIOLIB_IRQCHIP
540 help
541 Say yes here to support the Nomadik SoC GPIO block. This block is also
542 used by the Mobileye EyeQ5 SoC.
543
544 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
545 It is deeply interconnected with the associated pinctrl driver as GPIO
546 registers handle muxing ("alternate functions") as well.
547
548config GPIO_NPCM_SGPIO
549 bool "Nuvoton SGPIO support"
550 depends on ARCH_NPCM || COMPILE_TEST
551 select GPIOLIB_IRQCHIP
552 help
553 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
554
555config GPIO_OCTEON
556 tristate "Cavium OCTEON GPIO"
557 depends on CAVIUM_OCTEON_SOC
558 default y
559 help
560 Say yes here to support the on-chip GPIO lines on the OCTEON
561 family of SOCs.
562
563config GPIO_OMAP
564 tristate "TI OMAP GPIO support"
565 depends on ARCH_OMAP || COMPILE_TEST
566 default y if ARCH_OMAP
567 select GENERIC_IRQ_CHIP
568 select GPIOLIB_IRQCHIP
569 help
570 Say yes here to enable GPIO support for TI OMAP SoCs.
571
572config GPIO_PL061
573 tristate "PrimeCell PL061 GPIO support"
574 depends on ARM_AMBA || COMPILE_TEST
575 select IRQ_DOMAIN
576 select GPIOLIB_IRQCHIP
577 help
578 Say yes here to support the PrimeCell PL061 GPIO device.
579
580config GPIO_POLARFIRE_SOC
581 bool "Microchip FPGA GPIO support"
582 select REGMAP_MMIO
583 help
584 Say yes here to support the GPIO controllers on Microchip FPGAs.
585
586config GPIO_PXA
587 bool "PXA GPIO support"
588 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
589 select GPIOLIB_IRQCHIP
590 help
591 Say yes here to support the PXA GPIO device.
592
593config GPIO_RCAR
594 tristate "Renesas R-Car and RZ/G GPIO support"
595 depends on ARCH_RENESAS || COMPILE_TEST
596 select GPIOLIB_IRQCHIP
597 help
598 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
599
600config GPIO_RDA
601 bool "RDA Micro GPIO controller support"
602 depends on ARCH_RDA || COMPILE_TEST
603 select GPIO_GENERIC
604 select GPIOLIB_IRQCHIP
605 help
606 Say Y here to support RDA Micro GPIO controller.
607
608config GPIO_REALTEK_OTTO
609 tristate "Realtek Otto GPIO support"
610 depends on MACH_REALTEK_RTL || COMPILE_TEST
611 default MACH_REALTEK_RTL
612 select GPIO_GENERIC
613 select GPIOLIB_IRQCHIP
614 help
615 The GPIO controller on the Otto MIPS platform supports up to two
616 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
617 are grouped in four 8-bit wide ports.
618
619 When built as a module, the module will be called realtek_otto_gpio.
620
621config GPIO_REG
622 bool
623 help
624 A 32-bit single register GPIO fixed in/out implementation. This
625 can be used to represent any register as a set of GPIO signals.
626
627config GPIO_ROCKCHIP
628 tristate "Rockchip GPIO support"
629 depends on ARCH_ROCKCHIP || COMPILE_TEST
630 select GENERIC_IRQ_CHIP
631 select GPIOLIB_IRQCHIP
632 default ARCH_ROCKCHIP
633 help
634 Say yes here to support GPIO on Rockchip SoCs.
635
636config GPIO_RTD
637 tristate "Realtek DHC GPIO support"
638 depends on ARCH_REALTEK || COMPILE_TEST
639 default y
640 select GPIOLIB_IRQCHIP
641 help
642 This option enables support for GPIOs found on Realtek DHC(Digital
643 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
644 RTD1319D, RTD1395, RTD1619 and RTD1619B.
645
646 Say yes here to support GPIO functionality and GPIO interrupt on
647 Realtek DHC SoCs.
648
649config GPIO_SAMA5D2_PIOBU
650 tristate "SAMA5D2 PIOBU GPIO support"
651 depends on OF
652 depends on MFD_SYSCON
653 depends on ARCH_AT91 || COMPILE_TEST
654 select GPIO_SYSCON
655 help
656 Say yes here to use the PIOBU pins as GPIOs.
657
658 PIOBU pins on the SAMA5D2 can be used as GPIOs.
659 The difference from regular GPIOs is that they
660 maintain their value during backup/self-refresh.
661
662config GPIO_SIFIVE
663 tristate "SiFive GPIO support"
664 depends on OF
665 select IRQ_DOMAIN_HIERARCHY
666 select GPIO_GENERIC
667 select GPIOLIB_IRQCHIP
668 select REGMAP_MMIO
669 help
670 Say yes here to support the GPIO device on SiFive SoCs.
671
672config GPIO_SIOX
673 tristate "SIOX GPIO support"
674 depends on SIOX
675 select GPIOLIB_IRQCHIP
676 help
677 Say yes here to support SIOX I/O devices. These are units connected
678 via a SIOX bus and have a number of fixed-direction I/O lines.
679
680config GPIO_SNPS_CREG
681 bool "Synopsys GPIO via CREG (Control REGisters) driver"
682 depends on ARC || COMPILE_TEST
683 help
684 This driver supports GPIOs via CREG on various Synopsys SoCs.
685 This is a single-register MMIO GPIO driver for complex cases
686 where only several fields in register belong to GPIO lines and
687 each GPIO line owns a field with different length and on/off value.
688
689config GPIO_SPACEMIT_K1
690 tristate "SPACEMIT K1 GPIO support"
691 depends on ARCH_SPACEMIT || COMPILE_TEST
692 depends on OF
693 select GPIO_GENERIC
694 select GPIOLIB_IRQCHIP
695 help
696 Say yes here to support the SpacemiT's K1 GPIO device.
697
698config GPIO_SPEAR_SPICS
699 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
700 depends on PLAT_SPEAR
701 select GENERIC_IRQ_CHIP
702 help
703 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
704
705config GPIO_SPRD
706 tristate "Spreadtrum GPIO support"
707 depends on ARCH_SPRD || COMPILE_TEST
708 select GPIOLIB_IRQCHIP
709 help
710 Say yes here to support Spreadtrum GPIO device.
711
712config GPIO_STP_XWAY
713 bool "XWAY STP GPIOs"
714 depends on SOC_XWAY || COMPILE_TEST
715 help
716 This enables support for the Serial To Parallel (STP) unit found on
717 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
718 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
719 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
720 phy status.
721
722config GPIO_SYSCON
723 tristate "GPIO based on SYSCON"
724 depends on MFD_SYSCON && OF
725 help
726 Say yes here to support GPIO functionality though SYSCON driver.
727
728config GPIO_TANGIER
729 tristate
730 select GPIOLIB_IRQCHIP
731 help
732 GPIO support for Intel Tangier and compatible platforms.
733 Currently supported:
734 - Elkhart Lake
735 - Merrifield
736
737 If built as a module its name will be gpio-tangier.
738
739config GPIO_TB10X
740 bool "Abilis Systems TB10x GPIO controller"
741 depends on ARC_PLAT_TB10X || COMPILE_TEST
742 select GPIO_GENERIC
743 select GENERIC_IRQ_CHIP
744
745config GPIO_TEGRA
746 tristate "NVIDIA Tegra GPIO support"
747 default ARCH_TEGRA
748 depends on ARCH_TEGRA || COMPILE_TEST
749 select GPIOLIB_IRQCHIP
750 select IRQ_DOMAIN_HIERARCHY
751 help
752 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
753
754config GPIO_TEGRA186
755 tristate "NVIDIA Tegra186 GPIO support"
756 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
757 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
758 depends on OF
759 select GPIOLIB_IRQCHIP
760 select IRQ_DOMAIN_HIERARCHY
761 help
762 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
763
764config GPIO_TS4800
765 tristate "TS-4800 DIO blocks and compatibles"
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 select IRQ_DOMAIN_HIERARCHY
786 help
787 Say yes here to support UniPhier GPIOs.
788
789config GPIO_VF610
790 tristate "VF610 GPIO support"
791 default y if SOC_VF610
792 depends on ARCH_MXC || COMPILE_TEST
793 select GPIOLIB_IRQCHIP
794 select GPIO_GENERIC
795 help
796 Say yes here to support i.MX or Vybrid vf610 GPIOs.
797
798config GPIO_VISCONTI
799 tristate "Toshiba Visconti GPIO support"
800 depends on ARCH_VISCONTI || COMPILE_TEST
801 select GPIOLIB_IRQCHIP
802 select GPIO_GENERIC
803 select IRQ_DOMAIN_HIERARCHY
804 help
805 Say yes here to support GPIO on Tohisba Visconti.
806
807config GPIO_WCD934X
808 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
809 depends on MFD_WCD934X
810 help
811 This driver is to support GPIO block found on the Qualcomm Technologies
812 Inc WCD9340/WCD9341 Audio Codec.
813
814config GPIO_XGENE
815 bool "APM X-Gene GPIO controller support"
816 depends on ARM64
817 help
818 This driver is to support the GPIO block within the APM X-Gene SoC
819 platform's generic flash controller. The GPIO pins are muxed with
820 the generic flash controller's address and data pins. Say yes
821 here to enable the GFC GPIO functionality.
822
823config GPIO_XGENE_SB
824 tristate "APM X-Gene GPIO standby controller support"
825 depends on (ARCH_XGENE || COMPILE_TEST)
826 select GPIO_GENERIC
827 select GPIOLIB_IRQCHIP
828 select IRQ_DOMAIN_HIERARCHY
829 help
830 This driver supports the GPIO block within the APM X-Gene
831 Standby Domain. Say yes here to enable the GPIO functionality.
832
833config GPIO_XILINX
834 tristate "Xilinx GPIO support"
835 select GPIOLIB_IRQCHIP
836 help
837 Say yes here to support the Xilinx FPGA GPIO device.
838
839config GPIO_XLP
840 tristate "Cavium ThunderX2 GPIO support"
841 depends on ARCH_THUNDER2 || COMPILE_TEST
842 select GPIOLIB_IRQCHIP
843 help
844 This driver provides support for GPIO interface on Cavium's ThunderX2
845 CN99XX SoCs (Originally from Netlogic XLP).
846
847 If unsure, say N.
848
849config GPIO_XTENSA
850 bool "Xtensa GPIO32 support"
851 depends on XTENSA
852 depends on HAVE_XTENSA_GPIO32
853 depends on !SMP
854 help
855 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
856 and EXPSTATE (output) ports.
857
858config GPIO_ZEVIO
859 bool "LSI ZEVIO SoC memory mapped GPIOs"
860 depends on ARM
861 help
862 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
863
864config GPIO_ZYNQ
865 tristate "Xilinx Zynq GPIO support"
866 depends on ARCH_ZYNQ || ARCH_ZYNQMP || COMPILE_TEST
867 select GPIOLIB_IRQCHIP
868 help
869 Say yes here to support Xilinx Zynq GPIO controller.
870
871config GPIO_ZYNQMP_MODEPIN
872 tristate "ZynqMP ps-mode pin GPIO configuration driver"
873 depends on ZYNQMP_FIRMWARE || COMPILE_TEST
874 default ZYNQMP_FIRMWARE
875 help
876 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
877 driver.
878
879 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
880 is 4-bits boot mode pins. It sets and gets the status of
881 the ps-mode pin. Every pin can be configured as input/output.
882
883config GPIO_LOONGSON1
884 tristate "Loongson1 GPIO support"
885 depends on MACH_LOONGSON32 || COMPILE_TEST
886 select GPIO_GENERIC
887 help
888 Say Y or M here to support GPIO on Loongson1 SoCs.
889
890config GPIO_AMD_FCH
891 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
892 help
893 This option enables driver for GPIO on AMD's Fusion Controller Hub,
894 as found on G-series SOCs (e.g. GX-412TC).
895
896 Note: This driver doesn't register itself automatically, as it
897 needs to be provided with platform-specific configuration.
898 (See e.g. CONFIG_PCENGINES_APU2.)
899
900config GPIO_MSC313
901 bool "MStar MSC313 GPIO support"
902 depends on ARCH_MSTARV7 || COMPILE_TEST
903 default ARCH_MSTARV7
904 select GPIOLIB_IRQCHIP
905 select IRQ_DOMAIN_HIERARCHY
906 help
907 Say Y here to support the main GPIO block on MStar/SigmaStar
908 ARMv7-based SoCs.
909
910config GPIO_IDT3243X
911 tristate "IDT 79RC3243X GPIO support"
912 depends on MIKROTIK_RB532 || COMPILE_TEST
913 select GPIO_GENERIC
914 select GPIOLIB_IRQCHIP
915 help
916 Select this option to enable GPIO driver for
917 IDT 79RC3243X-based devices like Mikrotik RB532.
918
919 To compile this driver as a module, choose M here: the module will
920 be called gpio-idt3243x.
921
922endmenu
923
924menu "Port-mapped I/O GPIO drivers"
925 depends on X86 && HAS_IOPORT # I/O space access
926
927config GPIO_VX855
928 tristate "VIA VX855/VX875 GPIO"
929 depends on PCI
930 select MFD_CORE
931 select MFD_VX855
932 help
933 Support access to the VX855/VX875 GPIO lines through the GPIO library.
934
935 This driver provides common support for accessing the device.
936 Additional drivers must be enabled in order to use the
937 functionality of the device.
938
939config GPIO_I8255
940 tristate
941 select GPIO_REGMAP
942 help
943 Enables support for the i8255 interface library functions. The i8255
944 interface library provides functions to facilitate communication with
945 interfaces compatible with the venerable Intel 8255 Programmable
946 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
947 in the early 1970s but compatible interfaces are nowadays typically
948 found embedded in larger VLSI processing chips and FPGA components.
949
950 If built as a module its name will be gpio-i8255.
951
952config GPIO_104_DIO_48E
953 tristate "ACCES 104-DIO-48E GPIO support"
954 depends on PC104
955 select ISA_BUS_API
956 select REGMAP_MMIO
957 select REGMAP_IRQ
958 select GPIOLIB_IRQCHIP
959 select GPIO_I8255
960 select I8254
961 help
962 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
963 104-DIO-24E). The base port addresses for the devices may be
964 configured via the base module parameter. The interrupt line numbers
965 for the devices may be configured via the irq module parameter.
966
967config GPIO_104_IDIO_16
968 tristate "ACCES 104-IDIO-16 GPIO support"
969 depends on PC104
970 select ISA_BUS_API
971 select REGMAP_MMIO
972 select GPIO_IDIO_16
973 help
974 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
975 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
976 base port addresses for the devices may be configured via the base
977 module parameter. The interrupt line numbers for the devices may be
978 configured via the irq module parameter.
979
980config GPIO_104_IDI_48
981 tristate "ACCES 104-IDI-48 GPIO support"
982 depends on PC104
983 select ISA_BUS_API
984 select REGMAP_MMIO
985 select REGMAP_IRQ
986 select GPIOLIB_IRQCHIP
987 select GPIO_REGMAP
988 help
989 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
990 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
991 the devices may be configured via the base module parameter. The
992 interrupt line numbers for the devices may be configured via the irq
993 module parameter.
994
995config GPIO_F7188X
996 tristate "Fintek and Nuvoton Super-I/O GPIO support"
997 help
998 This option enables support for GPIOs found on Fintek Super-I/O
999 chips F71869, F71869A, F71882FG, F71889F and F81866.
1000 As well as Nuvoton Super-I/O chip NCT6126D.
1001
1002 To compile this driver as a module, choose M here: the module will
1003 be called f7188x-gpio.
1004
1005config GPIO_GPIO_MM
1006 tristate "Diamond Systems GPIO-MM GPIO support"
1007 depends on PC104
1008 select ISA_BUS_API
1009 select REGMAP_MMIO
1010 select GPIO_I8255
1011 help
1012 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
1013
1014 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
1015 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
1016 support for these 48 channels of digital I/O.
1017
1018 The base port addresses for the devices may be configured via the base
1019 array module parameter.
1020
1021config GPIO_IT87
1022 tristate "IT87xx GPIO support"
1023 help
1024 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
1025
1026 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
1027 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
1028 well.
1029
1030 To compile this driver as a module, choose M here: the module will
1031 be called gpio_it87.
1032
1033config GPIO_SCH
1034 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1035 depends on (X86 || COMPILE_TEST) && ACPI
1036 depends on LPC_SCH
1037 select GPIOLIB_IRQCHIP
1038 help
1039 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1040 Intel Tunnel Creek processor, Intel Centerton processor or
1041 Intel Quark X1000 SoC.
1042
1043 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1044 powered by the core power rail and are turned off during sleep
1045 modes (S3 and higher). The remaining four GPIOs are powered by
1046 the Intel SCH suspend power supply. These GPIOs remain
1047 active during S3. The suspend-powered GPIOs can be used to wake the
1048 system from the Suspend-to-RAM state.
1049
1050 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1051 core power rail and 9 from suspend power supply.
1052
1053 The Intel Centerton processor has a total of 30 GPIO pins.
1054 Twenty-one are powered by the core power rail and 9 from the
1055 suspend power supply.
1056
1057 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1058 power well and 6 from the suspend power well.
1059
1060config GPIO_NOVALAKE
1061 tristate "Intel Nova Lake GPIO-signaled ACPI events support"
1062 depends on (X86 || COMPILE_TEST) && ACPI
1063 select GPIOLIB_IRQCHIP
1064 help
1065 Select this to enable GPIO-signaled ACPI events support on platforms
1066 with the following SoCs:
1067
1068 - Intel Nova Lake
1069
1070 This driver adds support for new mode of handling platform events,
1071 through the use of GPIO-signaled ACPI events. Main purpose is to
1072 handle platform IRQs that originate in PCH components, for example
1073 interrupt triggered by Power Management Event (PME).
1074
1075 This driver, at this time, is not required to handle platform events.
1076 Listed platform(s) will stay in legacy mode, handling ACPI events as
1077 in previous generations. However, future platforms will eventually
1078 switch to new handling mode, requiring this driver to run events
1079 properly.
1080
1081 Driver supports up to 128 GPIO pins per GPE block.
1082
1083 To compile this driver as a module, choose M here: the module will
1084 be called gpio-novalake-events.
1085
1086config GPIO_SCH311X
1087 tristate "SMSC SCH311x SuperI/O GPIO"
1088 help
1089 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1090 SCH3116 "Super I/O" chipsets.
1091
1092 To compile this driver as a module, choose M here: the module will
1093 be called gpio-sch311x.
1094
1095config GPIO_TS5500
1096 tristate "TS-5500 DIO blocks and compatibles"
1097 depends on TS5500 || COMPILE_TEST
1098 help
1099 This driver supports Digital I/O exposed by pin blocks found on some
1100 Technologic Systems platforms. It includes, but is not limited to, 3
1101 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1102 LCD port.
1103
1104config GPIO_WINBOND
1105 tristate "Winbond Super I/O GPIO support"
1106 select ISA_BUS_API
1107 help
1108 This option enables support for GPIOs found on Winbond Super I/O
1109 chips.
1110 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1111 supported.
1112
1113 You will need to provide a module parameter "gpios", or a
1114 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1115 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1116
1117 To compile this driver as a module, choose M here: the module will
1118 be called gpio-winbond.
1119
1120config GPIO_WS16C48
1121 tristate "WinSystems WS16C48 GPIO support"
1122 select ISA_BUS_API
1123 select REGMAP_IRQ
1124 select REGMAP_MMIO
1125 select GPIOLIB_IRQCHIP
1126 select GPIO_REGMAP
1127 help
1128 Enables GPIO support for the WinSystems WS16C48. The base port
1129 addresses for the devices may be configured via the base module
1130 parameter. The interrupt line numbers for the devices may be
1131 configured via the irq module parameter.
1132
1133endmenu
1134
1135menu "I2C GPIO expanders"
1136 depends on I2C
1137
1138config GPIO_ADNP
1139 tristate "Avionic Design N-bit GPIO expander"
1140 depends on OF
1141 select GPIOLIB_IRQCHIP
1142 help
1143 This option enables support for N GPIOs found on Avionic Design
1144 I2C GPIO expanders. The register space will be extended by powers
1145 of two, so the controller will need to accommodate for that. For
1146 example: if a controller provides 48 pins, 6 registers will be
1147 enough to represent all pins, but the driver will assume a
1148 register layout for 64 pins (8 registers).
1149
1150config GPIO_FXL6408
1151 tristate "FXL6408 I2C GPIO expander"
1152 select GPIO_REGMAP
1153 select REGMAP_I2C
1154 help
1155 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1156
1157 To compile this driver as a module, choose M here: the module will
1158 be called gpio-fxl6408.
1159
1160config GPIO_DS4520
1161 tristate "DS4520 I2C GPIO expander"
1162 select REGMAP_I2C
1163 select GPIO_REGMAP
1164 help
1165 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1166 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1167
1168 To compile this driver as a module, choose M here: the module will
1169 be called gpio-ds4520.
1170
1171config GPIO_GW_PLD
1172 tristate "Gateworks PLD GPIO Expander"
1173 depends on OF
1174 help
1175 Say yes here to provide access to the Gateworks I2C PLD GPIO
1176 Expander. This is used at least on the Cambria GW2358-4.
1177
1178config GPIO_MAX7300
1179 tristate "Maxim MAX7300 GPIO expander"
1180 select GPIO_MAX730X
1181 help
1182 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1183
1184config GPIO_MAX732X
1185 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1186 help
1187 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1188 Port Expanders. Each IO port on these chips has a fixed role of
1189 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1190 Input and Output (designed by 'P'). The combinations are listed
1191 below:
1192
1193 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1194 max7322 (4I4O), max7323 (4P4O)
1195
1196 16 bits: max7324 (8I8O), max7325 (8P8O),
1197 max7326 (4I12O), max7327 (4P12O)
1198
1199 Board setup code must specify the model to use, and the start
1200 number for these GPIOs.
1201
1202config GPIO_MAX732X_IRQ
1203 bool "Interrupt controller support for MAX732x"
1204 depends on GPIO_MAX732X=y
1205 select GPIOLIB_IRQCHIP
1206 help
1207 Say yes here to enable the max732x to be used as an interrupt
1208 controller. It requires the driver to be built in the kernel.
1209
1210config GPIO_PCA953X
1211 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1212 select REGMAP_I2C
1213 help
1214 Say yes here to provide access to several register-oriented
1215 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1216 models include:
1217
1218 4 bits: pca9536, pca9537
1219
1220 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1221 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202,
1222 pcal6408, pcal9554b, tca9538, tcal6408
1223
1224 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1225 tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318,
1226 tca9539, tcal6416
1227
1228 18 bits: tca6418
1229
1230 24 bits: tca6424, pcal6524
1231
1232 40 bits: pca9505, pca9698, pca9506
1233
1234config GPIO_PCA953X_IRQ
1235 bool "Interrupt controller support for PCA953x"
1236 depends on GPIO_PCA953X
1237 select GPIOLIB_IRQCHIP
1238 help
1239 Say yes here to enable the pca953x to be used as an interrupt
1240 controller.
1241
1242config GPIO_PCA9570
1243 tristate "PCA9570 4-Bit I2C GPO expander"
1244 help
1245 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1246
1247 To compile this driver as a module, choose M here: the module will
1248 be called gpio-pca9570.
1249
1250config GPIO_PCF857X
1251 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1252 select GPIOLIB_IRQCHIP
1253 select IRQ_DOMAIN
1254 help
1255 Say yes here to provide access to most "quasi-bidirectional" I2C
1256 GPIO expanders used for additional digital outputs or inputs.
1257 Most of these parts are from NXP, though TI is a second source for
1258 some of them. Compatible models include:
1259
1260 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1261 pca9670, pca9672, pca9674, pca9674a,
1262 max7328, max7329
1263
1264 16 bits: pcf8575, pcf8575c, pca8575,
1265 pca9671, pca9673, pca9675
1266
1267 Your board setup code will need to declare the expanders in
1268 use, and assign numbers to the GPIOs they expose. Those GPIOs
1269 can then be used from drivers and other kernel code, just like
1270 other GPIOs, but only accessible from task contexts.
1271
1272 This driver provides an in-kernel interface to those GPIOs using
1273 platform-neutral GPIO calls.
1274
1275config GPIO_TPIC2810
1276 tristate "TPIC2810 8-Bit I2C GPO expander"
1277 help
1278 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1279
1280 To compile this driver as a module, choose M here: the module will
1281 be called gpio-tpic2810.
1282
1283config GPIO_TS4900
1284 tristate "Technologic Systems FPGA I2C GPIO"
1285 depends on SOC_IMX6 || COMPILE_TEST
1286 select REGMAP_I2C
1287 help
1288 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1289 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1290
1291endmenu
1292
1293menu "MFD GPIO expanders"
1294
1295config GPIO_ADP5520
1296 tristate "GPIO Support for ADP5520 PMIC"
1297 depends on PMIC_ADP5520
1298 help
1299 This option enables support for on-chip GPIO found
1300 on Analog Devices ADP5520 PMICs.
1301
1302config GPIO_ADP5585
1303 tristate "GPIO Support for ADP5585"
1304 depends on MFD_ADP5585
1305 select GPIOLIB_IRQCHIP
1306 help
1307 This option enables support for the GPIO function found in the Analog
1308 Devices ADP5585.
1309
1310config GPIO_ALTERA_A10SR
1311 tristate "Altera Arria10 System Resource GPIO"
1312 depends on MFD_ALTERA_A10SR
1313 help
1314 Driver for Arria10 Development Kit GPIO expansion which
1315 includes reads of pushbuttons and DIP switches as well
1316 as writes to LEDs.
1317
1318config GPIO_ARIZONA
1319 tristate "Wolfson Microelectronics Arizona class devices"
1320 depends on MFD_ARIZONA
1321 help
1322 Support for GPIOs on Wolfson Arizona class devices.
1323
1324config GPIO_BD71815
1325 tristate "ROHM BD71815 PMIC GPIO support"
1326 depends on MFD_ROHM_BD71828
1327 help
1328 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1329 available on the ROHM PMIC.
1330
1331 This driver can also be built as a module. If so, the module
1332 will be called gpio-bd71815.
1333
1334config GPIO_BD71828
1335 tristate "ROHM BD71828 GPIO support"
1336 depends on MFD_ROHM_BD71828
1337 help
1338 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1339 available on the ROHM PMIC in total. The GPIOs are limited to
1340 outputs only and pins must be configured to GPIO outputs by
1341 OTP. Enable this only if you want to use these pins as outputs.
1342
1343 This driver can also be built as a module. If so, the module
1344 will be called gpio-bd71828.
1345
1346config GPIO_BD72720
1347 tristate "ROHM BD72720 and BD73900 PMIC GPIO support"
1348 depends on MFD_ROHM_BD71828
1349 help
1350 Support for GPIO on ROHM BD72720 and BD73900 PMICs. There are two
1351 pins which can be configured to GPI or GPO, and three pins which can
1352 be configured to GPO on the ROHM PMIC. The pin configuration is done
1353 on OTP at manufacturing.
1354
1355config GPIO_BD9571MWV
1356 tristate "ROHM BD9571 GPIO support"
1357 depends on MFD_BD9571MWV
1358 help
1359 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1360 available on the ROHM PMIC in total, both of which can also
1361 generate interrupts.
1362
1363 This driver can also be built as a module. If so, the module
1364 will be called gpio-bd9571mwv.
1365
1366config GPIO_CGBC
1367 tristate "Congatec Board Controller GPIO support"
1368 depends on MFD_CGBC
1369 help
1370 Select this option to enable GPIO support for the Congatec Board
1371 Controller.
1372
1373 This driver can also be built as a module. If so, the module will be
1374 called gpio-cgbc.
1375
1376config GPIO_CROS_EC
1377 tristate "ChromeOS EC GPIO support"
1378 depends on CROS_EC
1379 help
1380 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1381 cannot be set unless the system is unlocked.
1382
1383 This driver can also be built as a module. If so, the module
1384 will be called gpio-cros-ec.
1385
1386config GPIO_CRYSTAL_COVE
1387 tristate "GPIO support for Crystal Cove PMIC"
1388 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1389 select GPIOLIB_IRQCHIP
1390 help
1391 Support for GPIO pins on Crystal Cove PMIC.
1392
1393 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1394 inside.
1395
1396 This driver can also be built as a module. If so, the module will be
1397 called gpio-crystalcove.
1398
1399config GPIO_CS5535
1400 tristate "AMD CS5535/CS5536 GPIO support"
1401 depends on X86 || MIPS || COMPILE_TEST
1402 depends on MFD_CS5535
1403 help
1404 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1405 can be used for quite a number of things. The CS5535/6 is found on
1406 AMD Geode and Lemote Yeeloong devices.
1407
1408 If unsure, say N.
1409
1410config GPIO_DA9052
1411 tristate "Dialog DA9052 GPIO"
1412 depends on PMIC_DA9052
1413 help
1414 Say yes here to enable the GPIO driver for the DA9052 chip.
1415
1416config GPIO_DA9055
1417 tristate "Dialog Semiconductor DA9055 GPIO"
1418 depends on MFD_DA9055
1419 help
1420 Say yes here to enable the GPIO driver for the DA9055 chip.
1421
1422 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1423 be controlled by this driver.
1424
1425 If driver is built as a module it will be called gpio-da9055.
1426
1427config GPIO_DLN2
1428 tristate "Diolan DLN2 GPIO support"
1429 depends on MFD_DLN2
1430 select GPIOLIB_IRQCHIP
1431
1432 help
1433 Select this option to enable GPIO driver for the Diolan DLN2
1434 board.
1435
1436 This driver can also be built as a module. If so, the module
1437 will be called gpio-dln2.
1438
1439config HTC_EGPIO
1440 bool "HTC EGPIO support"
1441 depends on ARM || COMPILE_TEST
1442 help
1443 This driver supports the CPLD egpio chip present on
1444 several HTC phones. It provides basic support for input
1445 pins, output pins, and IRQs.
1446
1447config GPIO_ELKHARTLAKE
1448 tristate "Intel Elkhart Lake PSE GPIO support"
1449 depends on INTEL_EHL_PSE_IO
1450 select GPIO_TANGIER
1451 help
1452 Select this option to enable GPIO support for Intel Elkhart Lake
1453 PSE GPIO IP.
1454
1455 To compile this driver as a module, choose M here: the module will
1456 be called gpio-elkhartlake.
1457
1458config GPIO_JANZ_TTL
1459 tristate "Janz VMOD-TTL Digital IO Module"
1460 depends on MFD_JANZ_CMODIO
1461 help
1462 This enables support for the Janz VMOD-TTL Digital IO module.
1463 This driver provides support for driving the pins in output
1464 mode only. Input mode is not supported.
1465
1466config GPIO_KEMPLD
1467 tristate "Kontron ETX / COMexpress GPIO"
1468 depends on MFD_KEMPLD
1469 select GPIOLIB_IRQCHIP
1470 help
1471 This enables support for the PLD GPIO interface on some Kontron ETX
1472 and COMexpress (ETXexpress) modules.
1473
1474 This driver can also be built as a module. If so, the module will be
1475 called gpio-kempld.
1476
1477config GPIO_LJCA
1478 tristate "INTEL La Jolla Cove Adapter GPIO support"
1479 depends on USB_LJCA
1480 select GPIOLIB_IRQCHIP
1481 default USB_LJCA
1482 help
1483 Select this option to enable GPIO driver for the INTEL
1484 La Jolla Cove Adapter (LJCA) board.
1485
1486 This driver can also be built as a module. If so, the module
1487 will be called gpio-ljca.
1488
1489config GPIO_LP3943
1490 tristate "TI/National Semiconductor LP3943 GPIO expander"
1491 depends on MFD_LP3943
1492 help
1493 GPIO driver for LP3943 MFD.
1494 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1495 Open drain outputs are required for this usage.
1496
1497config GPIO_LP873X
1498 tristate "TI LP873X GPO"
1499 depends on MFD_TI_LP873X
1500 help
1501 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1502 on LP873X PMICs.
1503
1504 This driver can also be built as a module. If so, the module will be
1505 called gpio-lp873x.
1506
1507config GPIO_LP87565
1508 tristate "TI LP87565 GPIO"
1509 depends on MFD_TI_LP87565
1510 help
1511 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1512 on LP87565 PMICs.
1513
1514 This driver can also be built as a module. If so, the module will be
1515 called gpio-lp87565.
1516
1517config GPIO_MACSMC
1518 tristate "Apple Mac SMC GPIO"
1519 depends on MFD_MACSMC
1520 help
1521 Support for GPIOs controlled by the SMC microcontroller on Apple Mac
1522 systems.
1523
1524 This driver can also be built as a module. If so, the module will be
1525 called gpio-macsmc.
1526
1527config GPIO_MADERA
1528 tristate "Cirrus Logic Madera class codecs"
1529 depends on PINCTRL_MADERA
1530 help
1531 Support for GPIOs on Cirrus Logic Madera class codecs.
1532
1533config GPIO_MAX7360
1534 tristate "MAX7360 GPIO support"
1535 depends on MFD_MAX7360
1536 select GPIO_REGMAP
1537 select REGMAP_IRQ
1538 help
1539 Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL
1540 lines as GPO.
1541
1542 This driver can also be built as a module. If so, the module will be
1543 called gpio-max7360.
1544
1545config GPIO_MAX77620
1546 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1547 depends on MFD_MAX77620
1548 select GPIOLIB_IRQCHIP
1549 help
1550 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1551 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1552 driver also provides interrupt support for each of the GPIOs.
1553 Say yes here to enable the max77620 to be used as GPIO controller.
1554
1555config GPIO_MAX77650
1556 tristate "Maxim MAX77650/77651 GPIO support"
1557 depends on MFD_MAX77650
1558 help
1559 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1560 These chips have a single pin that can be configured as GPIO.
1561
1562config GPIO_MAX77759
1563 tristate "Maxim Integrated MAX77759 GPIO support"
1564 depends on MFD_MAX77759
1565 default MFD_MAX77759
1566 select GPIOLIB_IRQCHIP
1567 help
1568 GPIO driver for MAX77759 PMIC from Maxim Integrated.
1569 There are two GPIOs available on these chips in total, both of
1570 which can also generate interrupts.
1571
1572 This driver can also be built as a module. If so, the module will be
1573 called gpio-max77759.
1574
1575config GPIO_NCT6694
1576 tristate "Nuvoton NCT6694 GPIO controller support"
1577 depends on MFD_NCT6694
1578 select GENERIC_IRQ_CHIP
1579 select GPIOLIB_IRQCHIP
1580 help
1581 This driver supports 8 GPIO pins per bank that can all be interrupt
1582 sources.
1583
1584 This driver can also be built as a module. If so, the module will be
1585 called gpio-nct6694.
1586
1587config GPIO_PALMAS
1588 tristate "TI PALMAS series PMICs GPIO"
1589 depends on MFD_PALMAS
1590 help
1591 Select this option to enable GPIO driver for the TI PALMAS
1592 series chip family.
1593
1594config GPIO_PMIC_EIC_SPRD
1595 tristate "Spreadtrum PMIC EIC support"
1596 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1597 select GPIOLIB_IRQCHIP
1598 help
1599 Say yes here to support Spreadtrum PMIC EIC device.
1600
1601config GPIO_QIXIS_FPGA
1602 tristate "NXP QIXIS FPGA GPIO support"
1603 depends on MFD_SIMPLE_MFD_I2C || COMPILE_TEST
1604 select GPIO_REGMAP
1605 select REGMAP_MMIO
1606 help
1607 This enables support for the GPIOs found in the QIXIS FPGA which is
1608 integrated on some NXP Layerscape boards such as LX2160ARDB and
1609 LS1046AQDS.
1610
1611config GPIO_RC5T583
1612 bool "RICOH RC5T583 GPIO"
1613 depends on MFD_RC5T583
1614 help
1615 Select this option to enable GPIO driver for the Ricoh RC5T583
1616 chip family.
1617 This driver provides the support for driving/reading the GPIO pins
1618 of RC5T583 device through standard GPIO library.
1619
1620config GPIO_SL28CPLD
1621 tristate "Kontron sl28cpld GPIO support"
1622 depends on MFD_SL28CPLD || COMPILE_TEST
1623 select GPIO_REGMAP
1624 select GPIOLIB_IRQCHIP
1625 select REGMAP_IRQ
1626 help
1627 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1628
1629 This driver can also be built as a module. If so, the module will be
1630 called gpio-sl28cpld.
1631
1632config GPIO_STMPE
1633 tristate "STMPE GPIOs"
1634 depends on MFD_STMPE
1635 select GPIOLIB_IRQCHIP
1636 help
1637 This enables support for the GPIOs found on the STMPE I/O
1638 Expanders.
1639
1640config GPIO_TC3589X
1641 bool "TC3589X GPIOs"
1642 depends on MFD_TC3589X
1643 select GPIOLIB_IRQCHIP
1644 help
1645 This enables support for the GPIOs found on the TC3589X
1646 I/O Expander.
1647
1648config GPIO_TIMBERDALE
1649 bool "Support for timberdale GPIO IP"
1650 depends on MFD_TIMBERDALE
1651 select GPIOLIB_IRQCHIP
1652 help
1653 Add support for the GPIO IP in the timberdale FPGA.
1654
1655config GPIO_TN48M_CPLD
1656 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1657 depends on MFD_TN48M_CPLD || COMPILE_TEST
1658 select GPIO_REGMAP
1659 help
1660 This enables support for the GPIOs found on the Delta
1661 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1662 they are input-only or output-only type.
1663
1664 This driver can also be built as a module. If so, the
1665 module will be called gpio-tn48m.
1666
1667config GPIO_TPS65086
1668 tristate "TI TPS65086 GPO"
1669 depends on MFD_TPS65086
1670 help
1671 This driver supports the GPO on TI TPS65086x PMICs.
1672
1673config GPIO_TPS65218
1674 tristate "TPS65218 GPIO"
1675 depends on MFD_TPS65218
1676 help
1677 Select this option to enable GPIO driver for the TPS65218
1678 chip family.
1679
1680config GPIO_TPS65219
1681 tristate "TPS65219 GPIO"
1682 depends on MFD_TPS65219
1683 default MFD_TPS65219
1684 help
1685 Select this option to enable GPIO driver for the TPS65219 chip
1686 family.
1687 GPIO0 is statically configured as either input or output prior to
1688 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1689 is statically configured by NVM. GPIO0 can't be used as a generic
1690 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1691 MULTI_DEVICE_EN=1.
1692
1693 This driver can also be built as a module. If so, the module will be
1694 called gpio_tps65219.
1695
1696config GPIO_TPS6586X
1697 bool "TPS6586X GPIO"
1698 depends on MFD_TPS6586X
1699 help
1700 Select this option to enable GPIO driver for the TPS6586X
1701 chip family.
1702
1703config GPIO_TPS65910
1704 bool "TPS65910 GPIO"
1705 depends on MFD_TPS65910
1706 help
1707 Select this option to enable GPIO driver for the TPS65910
1708 chip family.
1709
1710config GPIO_TPS65912
1711 tristate "TI TPS65912 GPIO"
1712 depends on MFD_TPS65912
1713 help
1714 This driver supports TPS65912 GPIO chip.
1715
1716config GPIO_TPS68470
1717 tristate "TPS68470 GPIO"
1718 depends on INTEL_SKL_INT3472
1719 help
1720 Select this option to enable GPIO driver for the TPS68470
1721 chip family.
1722 There are 7 GPIOs and few sensor-related GPIOs supported
1723 by the TPS68470. While the 7 GPIOs can be configured as
1724 input or output as appropriate, the sensor related GPIOs
1725 are "output only" GPIOs.
1726
1727config GPIO_TQMX86
1728 tristate "TQ-Systems TQMx86 GPIO"
1729 depends on MFD_TQMX86 || COMPILE_TEST
1730 depends on HAS_IOPORT_MAP
1731 select GPIOLIB_IRQCHIP
1732 help
1733 This driver supports GPIO on the TQMX86 IO controller.
1734
1735config GPIO_TWL4030
1736 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1737 depends on TWL4030_CORE
1738 help
1739 Say yes here to access the GPIO signals of various multi-function
1740 power management chips from Texas Instruments.
1741
1742config GPIO_TWL6040
1743 tristate "TWL6040 GPO"
1744 depends on TWL6040_CORE
1745 help
1746 Say yes here to access the GPO signals of twl6040
1747 audio chip from Texas Instruments.
1748
1749config GPIO_WHISKEY_COVE
1750 tristate "GPIO support for Whiskey Cove PMIC"
1751 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1752 select GPIOLIB_IRQCHIP
1753 help
1754 Support for GPIO pins on Whiskey Cove PMIC.
1755
1756 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1757 inside.
1758
1759 This driver can also be built as a module. If so, the module will be
1760 called gpio-wcove.
1761
1762config GPIO_WM831X
1763 tristate "WM831x GPIOs"
1764 depends on MFD_WM831X
1765 help
1766 Say yes here to access the GPIO signals of WM831x power management
1767 chips from Wolfson Microelectronics.
1768
1769config GPIO_WM8350
1770 tristate "WM8350 GPIOs"
1771 depends on MFD_WM8350
1772 help
1773 Say yes here to access the GPIO signals of WM8350 power management
1774 chips from Wolfson Microelectronics.
1775
1776config GPIO_WM8994
1777 tristate "WM8994 GPIOs"
1778 depends on MFD_WM8994
1779 help
1780 Say yes here to access the GPIO signals of WM8994 audio hub
1781 CODECs from Wolfson Microelectronics.
1782
1783endmenu
1784
1785menu "PCI GPIO expanders"
1786 depends on PCI
1787
1788config GPIO_AMD8111
1789 tristate "AMD 8111 GPIO driver"
1790 depends on X86 || COMPILE_TEST
1791 depends on HAS_IOPORT_MAP
1792 help
1793 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1794
1795 Note that usually system firmware/ACPI handles GPIO pins on their
1796 own and users might easily break their systems with uncareful usage
1797 of this driver!
1798
1799 If unsure, say N
1800
1801config GPIO_BT8XX
1802 tristate "BT8XX GPIO abuser"
1803 depends on VIDEO_BT848=n || COMPILE_TEST
1804 help
1805 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1806 as a cheap PCI GPIO card.
1807
1808 This chip can be found on Miro, Hauppauge and STB TV-cards.
1809
1810 The card needs to be physically altered for using it as a
1811 GPIO card. For more information on how to build a GPIO card
1812 from a BT8xx TV card, see the documentation file at
1813 Documentation/driver-api/gpio/bt8xxgpio.rst
1814
1815 If unsure, say N.
1816
1817config GPIO_MERRIFIELD
1818 tristate "Intel Merrifield GPIO support"
1819 depends on X86_INTEL_MID
1820 select GPIO_TANGIER
1821 help
1822 Say Y here to support Intel Merrifield GPIO.
1823
1824config GPIO_MLXBF
1825 tristate "Mellanox BlueField SoC GPIO"
1826 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1827 select GPIO_GENERIC
1828 help
1829 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1830
1831config GPIO_MLXBF2
1832 tristate "Mellanox BlueField 2 SoC GPIO"
1833 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1834 select GPIO_GENERIC
1835 select GPIOLIB_IRQCHIP
1836 help
1837 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1838
1839config GPIO_MLXBF3
1840 tristate "Mellanox BlueField 3 SoC GPIO"
1841 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1842 select GPIO_GENERIC
1843 select GPIOLIB_IRQCHIP
1844 help
1845 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1846 This GPIO controller supports interrupt handling and enables the
1847 manipulation of certain GPIO pins.
1848 This controller should be used in parallel with pinctrl-mlxbf3 to
1849 control the desired GPIOs.
1850 This driver can also be built as a module called mlxbf3-gpio.
1851
1852config GPIO_ML_IOH
1853 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1854 depends on X86 || COMPILE_TEST
1855 select GENERIC_IRQ_CHIP
1856 help
1857 ML7213 is companion chip for Intel Atom E6xx series.
1858 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1859 Hub) which is for IVI (In-Vehicle Infotainment) use.
1860 This driver can access the IOH's GPIO device.
1861
1862config GPIO_PCH
1863 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1864 depends on X86_32 || MIPS || COMPILE_TEST
1865 select GENERIC_IRQ_CHIP
1866 help
1867 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1868 which is an IOH (Input/Output Hub) for x86 embedded processor.
1869 This driver can access PCH GPIO device.
1870
1871 This driver also can be used for LAPIS Semiconductor IOH (Input/
1872 Output Hub), ML7223 and ML7831.
1873 ML7223 IOH is for MP (Media Phone) use.
1874 ML7831 IOH is for general purpose use.
1875 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1876 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1877
1878config GPIO_PCI_IDIO_16
1879 tristate "ACCES PCI-IDIO-16 GPIO support"
1880 select REGMAP_MMIO
1881 select GPIO_IDIO_16
1882 help
1883 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1884 generated when any of the inputs change state (low to high or high to
1885 low). Input filter control is not supported by this driver, and the
1886 input filters are deactivated by this driver.
1887
1888config GPIO_PCIE_IDIO_24
1889 tristate "ACCES PCIe-IDIO-24 GPIO support"
1890 select REGMAP_IRQ
1891 select REGMAP_MMIO
1892 select GPIOLIB_IRQCHIP
1893 select GPIO_REGMAP
1894 help
1895 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1896 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1897 when any of the inputs change state (low to high or high to low).
1898 Input filter control is not supported by this driver, and the input
1899 filters are deactivated by this driver.
1900
1901config GPIO_RDC321X
1902 tristate "RDC R-321x GPIO support"
1903 select MFD_CORE
1904 select MFD_RDC321X
1905 help
1906 Support for the RDC R321x SoC GPIOs over southbridge
1907 PCI configuration space.
1908
1909config GPIO_SODAVILLE
1910 bool "Intel Sodaville GPIO support"
1911 depends on X86 && OF
1912 select GPIO_GENERIC
1913 select GENERIC_IRQ_CHIP
1914 help
1915 Say Y here to support Intel Sodaville GPIO.
1916
1917endmenu
1918
1919menu "SPI GPIO expanders"
1920 depends on SPI_MASTER
1921
1922config GPIO_74X164
1923 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1924 help
1925 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1926 shift registers. This driver can be used to provide access
1927 to more GPIO outputs.
1928
1929config GPIO_MAX3191X
1930 tristate "Maxim MAX3191x industrial serializer"
1931 select CRC8
1932 help
1933 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1934 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1935 chip to make 8 digital 24V inputs available via SPI. Supports
1936 CRC checksums to guard against electromagnetic interference,
1937 as well as undervoltage and overtemperature detection.
1938
1939config GPIO_MAX7301
1940 tristate "Maxim MAX7301 GPIO expander"
1941 select GPIO_MAX730X
1942 help
1943 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1944
1945config GPIO_MC33880
1946 tristate "Freescale MC33880 high-side/low-side switch"
1947 help
1948 SPI driver for Freescale MC33880 high-side/low-side switch.
1949 This provides GPIO interface supporting inputs and outputs.
1950
1951config GPIO_PISOSR
1952 tristate "Generic parallel-in/serial-out shift register"
1953 help
1954 GPIO driver for SPI compatible parallel-in/serial-out shift
1955 registers. These are input only devices.
1956
1957config GPIO_XRA1403
1958 tristate "EXAR XRA1403 16-bit GPIO expander"
1959 select REGMAP_SPI
1960 help
1961 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1962
1963config GPIO_MOXTET
1964 tristate "Turris Mox Moxtet bus GPIO expander"
1965 depends on MOXTET
1966 help
1967 Say yes here if you are building for the Turris Mox router.
1968 This is the driver needed for configuring the GPIOs via the Moxtet
1969 bus. For example the Mox module with SFP cage needs this driver
1970 so that phylink can use corresponding GPIOs.
1971
1972endmenu
1973
1974menu "USB GPIO expanders"
1975 depends on USB
1976
1977config GPIO_VIPERBOARD
1978 tristate "Viperboard GPIO a & b support"
1979 depends on MFD_VIPERBOARD
1980 help
1981 Say yes here to access the GPIO signals of Nano River
1982 Technologies Viperboard. There are two GPIO chips on the
1983 board: gpioa and gpiob.
1984 See viperboard API specification and Nano
1985 River Tech's viperboard.h for detailed meaning
1986 of the module parameters.
1987
1988config GPIO_MPSSE
1989 tristate "FTDI MPSSE GPIO support"
1990 select GPIOLIB_IRQCHIP
1991 help
1992 GPIO driver for FTDI's MPSSE interface. These can do input and
1993 output. Each MPSSE provides 16 IO pins.
1994
1995config GPIO_USBIO
1996 tristate "Intel USBIO GPIO support"
1997 depends on USB_USBIO
1998 default USB_USBIO
1999 help
2000 Select this option to enable GPIO driver for the INTEL
2001 USBIO driver stack.
2002
2003 This driver can also be built as a module. If so, the module
2004 will be called gpio_usbio.
2005
2006endmenu
2007
2008menu "Virtual GPIO drivers"
2009
2010config GPIO_AGGREGATOR
2011 tristate "GPIO Aggregator"
2012 select CONFIGFS_FS
2013 help
2014 Say yes here to enable the GPIO Aggregator, which provides a way to
2015 aggregate existing GPIO lines into a new virtual GPIO chip.
2016 This can serve the following purposes:
2017 - Assign permissions for a collection of GPIO lines to a user,
2018 - Export a collection of GPIO lines to a virtual machine,
2019 - Provide a generic driver for a GPIO-operated device in an
2020 industrial control context, to be operated from userspace using
2021 the GPIO chardev interface.
2022
2023config GPIO_LATCH
2024 tristate "GPIO latch driver"
2025 help
2026 Say yes here to enable a driver for GPIO multiplexers based on latches
2027 connected to other GPIOs.
2028
2029config GPIO_LINE_MUX
2030 tristate "GPIO line mux driver"
2031 depends on OF
2032 select MULTIPLEXER
2033 help
2034 Say Y here to support the GPIO line mux, which can provide virtual
2035 GPIOs backed by a shared real GPIO and a multiplexer in a 1-to-many
2036 fashion.
2037
2038config GPIO_MOCKUP
2039 tristate "GPIO Testing Driver (DEPRECATED)"
2040 select IRQ_SIM
2041 help
2042 This module is DEPRECATED. Please consider using gpio-sim instead.
2043
2044 This enables GPIO Testing driver, which provides a way to test GPIO
2045 subsystem through sysfs (or char device) and debugfs.
2046 User could use it through the script in
2047 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
2048 it.
2049
2050config GPIO_VIRTIO
2051 tristate "VirtIO GPIO support"
2052 depends on VIRTIO
2053 select GPIOLIB_IRQCHIP
2054 help
2055 Say Y here to enable guest support for virtio-based GPIO controllers.
2056
2057 These virtual GPIOs can be routed to real GPIOs or attached to
2058 simulators on the host (like QEMU).
2059
2060config GPIO_SIM
2061 tristate "GPIO Simulator Module"
2062 select IRQ_SIM
2063 select CONFIGFS_FS
2064 help
2065 This enables the GPIO simulator - a configfs-based GPIO testing
2066 driver.
2067
2068config GPIO_SHARED_PROXY
2069 tristate "Proxy driver for non-exclusive GPIOs"
2070 default m
2071 depends on GPIO_SHARED || COMPILE_TEST
2072 select AUXILIARY_BUS
2073 help
2074 This enables the GPIO shared proxy driver - an abstraction layer
2075 for GPIO pins that are shared by multiple devices.
2076
2077endmenu
2078
2079menu "GPIO Debugging utilities"
2080
2081config GPIO_SLOPPY_LOGIC_ANALYZER
2082 tristate "Sloppy GPIO logic analyzer"
2083 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
2084 help
2085 This option enables support for a sloppy logic analyzer using polled
2086 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
2087 this driver. The script will make it easier to use and will also
2088 isolate a CPU for the polling task. Note that this is a last resort
2089 analyzer which can be affected by latencies, non-deterministic code
2090 paths, or NMIs. However, for e.g. remote development, it may be useful
2091 to get a first view and aid further debugging.
2092
2093 If this driver is built as a module it will be called
2094 'gpio-sloppy-logic-analyzer'.
2095
2096config GPIO_VIRTUSER
2097 tristate "GPIO Virtual User Testing Module"
2098 select DEBUG_FS
2099 select CONFIGFS_FS
2100 select IRQ_WORK
2101 help
2102 Say Y here to enable the configurable, configfs-based virtual GPIO
2103 consumer testing driver.
2104
2105 This driver is aimed as a helper in spotting any regressions in
2106 hot-unplug handling in GPIOLIB.
2107
2108endmenu
2109
2110endif