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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_KUNIT
106 tristate "Build GPIO Kunit test cases"
107 depends on KUNIT
108 default KUNIT_ALL_TESTS
109 help
110 Say Y here to build the module containing Kunit test cases verifying
111 the functionality of the GPIO subsystem.
112
113config GPIO_GENERIC
114 depends on HAS_IOMEM # Only for IOMEM drivers
115 tristate
116
117config GPIO_REGMAP
118 select REGMAP
119 tristate
120
121config GPIO_SWNODE_UNDEFINED
122 bool
123 help
124 This adds a special place holder for software nodes to contain an
125 undefined GPIO reference, this is primarily used by SPI to allow a
126 list of GPIO chip selects to mark a certain chip select as being
127 controlled the SPI device's internal chip select mechanism and not
128 a GPIO.
129
130# put drivers in the right section, in alphabetical order
131
132# This symbol is selected by both I2C and SPI expanders
133config GPIO_MAX730X
134 tristate
135
136config GPIO_IDIO_16
137 tristate
138 select REGMAP_IRQ
139 select GPIOLIB_IRQCHIP
140 select GPIO_REGMAP
141 help
142 Enables support for the idio-16 library functions. The idio-16 library
143 provides functions to facilitate communication with devices within the
144 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
145
146 If built as a module its name will be gpio-idio-16.
147
148menu "Memory mapped GPIO drivers"
149 depends on HAS_IOMEM
150
151config GPIO_74XX_MMIO
152 tristate "GPIO driver for 74xx-ICs with MMIO access"
153 depends on OF
154 select GPIO_GENERIC
155 help
156 Say yes here to support GPIO functionality for 74xx-compatible ICs
157 with MMIO access. Compatible models include:
158 1 bit: 741G125 (Input), 741G74 (Output)
159 2 bits: 742G125 (Input), 7474 (Output)
160 4 bits: 74125 (Input), 74175 (Output)
161 6 bits: 74365 (Input), 74174 (Output)
162 8 bits: 74244 (Input), 74273 (Output)
163 16 bits: 741624 (Input), 7416374 (Output)
164
165config GPIO_ALTERA
166 tristate "Altera GPIO"
167 select GPIO_GENERIC
168 select GPIOLIB_IRQCHIP
169 help
170 Say Y or M here to build support for the Altera PIO device.
171
172 If driver is built as a module it will be called gpio-altera.
173
174config GPIO_AMDPT
175 tristate "AMD Promontory GPIO support"
176 depends on ACPI
177 select GPIO_GENERIC
178 help
179 Driver for GPIO functionality on Promontory IOHub.
180 Requires ACPI ASL code to enumerate as a platform device.
181
182config GPIO_ASPEED
183 tristate "Aspeed GPIO support"
184 depends on ARCH_ASPEED || COMPILE_TEST
185 select GPIOLIB_IRQCHIP
186 help
187 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
188
189config GPIO_ASPEED_SGPIO
190 bool "Aspeed SGPIO support"
191 depends on ARCH_ASPEED || COMPILE_TEST
192 select GPIO_GENERIC
193 select GPIOLIB_IRQCHIP
194 help
195 Say Y here to support Aspeed AST2500 SGPIO functionality.
196
197config GPIO_ATH79
198 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
199 default y if ATH79
200 depends on ATH79 || COMPILE_TEST
201 select GPIO_GENERIC
202 select GPIOLIB_IRQCHIP
203 help
204 Select this option to enable GPIO driver for
205 Atheros AR71XX/AR724X/AR913X SoC devices.
206
207config GPIO_RASPBERRYPI_EXP
208 tristate "Raspberry Pi 3 GPIO Expander"
209 default RASPBERRYPI_FIRMWARE
210 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
211 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
212 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
213 help
214 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
215 the firmware mailbox to communicate with VideoCore on BCM283x chips.
216
217config GPIO_BCM_KONA
218 bool "Broadcom Kona GPIO"
219 depends on ARCH_BCM_MOBILE || COMPILE_TEST
220 select GPIOLIB_IRQCHIP
221 help
222 Turn on GPIO support for Broadcom "Kona" chips.
223
224config GPIO_BCM_XGS_IPROC
225 tristate "BRCM XGS iProc GPIO support"
226 depends on ARCH_BCM_IPROC || COMPILE_TEST
227 select GPIO_GENERIC
228 select GPIOLIB_IRQCHIP
229 default ARCH_BCM_IPROC
230 help
231 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
232
233config GPIO_BLZP1600
234 tristate "Blaize BLZP1600 GPIO support"
235 default y if ARCH_BLAIZE
236 depends on ARCH_BLAIZE || COMPILE_TEST
237 select GPIO_GENERIC
238 select GPIOLIB_IRQCHIP
239 help
240 Say Y or M here to add support for the Blaize BLZP1600 GPIO device.
241 The controller is based on the Verisilicon Microelectronics GPIO APB v0.2
242 IP block.
243
244config GPIO_BRCMSTB
245 tristate "BRCMSTB GPIO support"
246 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
247 depends on ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST
248 depends on OF
249 select GPIO_GENERIC
250 select IRQ_DOMAIN
251 help
252 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
253
254config GPIO_BY_PINCTRL
255 tristate "GPIO support based on a pure pin control backend"
256 depends on GPIOLIB
257 help
258 Support for generic GPIO handling based on top of pin control.
259 Traditionally, firmware creates a GPIO interface or a pin
260 controller interface and we have a driver to support it. But
261 in SCMI, the pin control interface is generic and we can
262 create a simple GPIO device based on the pin control interface
263 without doing anything custom.
264
265 This driver is used to access GPIOs over the ARM SCMI protocol.
266
267config GPIO_CADENCE
268 tristate "Cadence GPIO support"
269 depends on OF
270 select GPIO_GENERIC
271 select GPIOLIB_IRQCHIP
272 help
273 Say yes here to enable support for Cadence GPIO controller.
274
275config GPIO_CLPS711X
276 tristate "CLPS711X GPIO support"
277 depends on ARCH_CLPS711X || COMPILE_TEST
278 select GPIO_GENERIC
279 help
280 Say yes here to support GPIO on CLPS711X SoCs.
281
282config GPIO_DAVINCI
283 tristate "TI Davinci/Keystone GPIO support"
284 default y if ARCH_DAVINCI
285 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
286 select GPIOLIB_IRQCHIP
287 help
288 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
289
290config GPIO_DWAPB
291 tristate "Synopsys DesignWare APB GPIO driver"
292 select GPIO_GENERIC
293 select GPIOLIB_IRQCHIP
294 help
295 Say Y or M here to build support for the Synopsys DesignWare APB
296 GPIO block.
297
298config GPIO_EIC_SPRD
299 tristate "Spreadtrum EIC support"
300 depends on ARCH_SPRD || COMPILE_TEST
301 select GPIOLIB_IRQCHIP
302 help
303 Say yes here to support Spreadtrum EIC device.
304
305config GPIO_EM
306 tristate "Emma Mobile GPIO"
307 depends on ARCH_EMEV2 || COMPILE_TEST
308 help
309 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
310
311config GPIO_EN7523
312 tristate "Airoha GPIO support"
313 depends on ARCH_AIROHA || COMPILE_TEST
314 default ARCH_AIROHA
315 select GPIO_GENERIC
316 select GPIOLIB_IRQCHIP
317 help
318 Say Y or M here to support the GPIO controller block on the
319 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
320
321config GPIO_EP93XX
322 def_bool y
323 depends on ARCH_EP93XX || COMPILE_TEST
324 select GPIO_GENERIC
325 select GPIOLIB_IRQCHIP
326
327config GPIO_EXAR
328 tristate "Support for GPIO pins on XR17V352/354/358"
329 depends on SERIAL_8250_EXAR
330 select REGMAP_MMIO
331 help
332 Selecting this option will enable handling of GPIO pins present
333 on Exar XR17V352/354/358 chips.
334
335config GPIO_GE_FPGA
336 bool "GE FPGA based GPIO"
337 depends on GE_FPGA || COMPILE_TEST
338 select GPIO_GENERIC
339 help
340 Support for common GPIO functionality provided on some GE Single Board
341 Computers.
342
343 This driver provides basic support (configure as input or output, read
344 and write pin state) for GPIO implemented in a number of GE single
345 board computers.
346
347config GPIO_FTGPIO010
348 bool "Faraday FTGPIO010 GPIO"
349 depends on OF
350 select GPIO_GENERIC
351 select GPIOLIB_IRQCHIP
352 default (ARCH_GEMINI || ARCH_MOXART)
353 help
354 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
355 Cortina systems Gemini platforms, Moxa ART and others.
356
357config GPIO_GENERIC_PLATFORM
358 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
359 select GPIO_GENERIC
360 help
361 Say yes here to support basic platform_device memory-mapped GPIO controllers.
362
363config GPIO_GRANITERAPIDS
364 tristate "Intel Granite Rapids-D vGPIO support"
365 depends on X86 || COMPILE_TEST
366 select GPIOLIB_IRQCHIP
367 help
368 Select this to enable virtual GPIO support on platforms with the
369 following SoCs:
370
371 - Intel Granite Rapids-D
372
373 The driver enables basic GPIO functionality and implements interrupt
374 support. The virtual GPIO driver controls GPIO lines via a firmware
375 interface. The physical GPIO pins reside on device that is external
376 from the main SoC package, such as a BMC or a CPLD.
377
378 To compile this driver as a module, choose M here: the module will
379 be called gpio-graniterapids.
380
381config GPIO_GRGPIO
382 tristate "Aeroflex Gaisler GRGPIO support"
383 depends on OF || COMPILE_TEST
384 select GPIO_GENERIC
385 select GPIOLIB_IRQCHIP
386 help
387 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
388 VHDL IP core library.
389
390config GPIO_HISI
391 tristate "HiSilicon GPIO controller driver"
392 depends on ARM64 || COMPILE_TEST
393 select GPIO_GENERIC
394 select GPIOLIB_IRQCHIP
395 help
396 Say Y or M here to build support for the HiSilicon GPIO controller
397 driver GPIO block.
398 This GPIO controller supports double-edge interrupt and multi-core
399 concurrent access.
400
401config GPIO_HLWD
402 tristate "Nintendo Wii (Hollywood) GPIO"
403 depends on OF
404 select GPIO_GENERIC
405 select GPIOLIB_IRQCHIP
406 help
407 Select this to support the GPIO controller of the Nintendo Wii.
408
409 If unsure, say N.
410
411config GPIO_ICH
412 tristate "Intel ICH GPIO"
413 depends on (X86 && LPC_ICH) || (COMPILE_TEST && HAS_IOPORT)
414 help
415 Say yes here to support the GPIO functionality of a number of Intel
416 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
417 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
418 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
419
420 If unsure, say N.
421
422config GPIO_IMX_SCU
423 def_bool y
424 depends on IMX_SCU
425
426config GPIO_IXP4XX
427 bool "Intel IXP4xx GPIO"
428 depends on (ARCH_IXP4XX && OF) || COMPILE_TEST
429 select GPIO_GENERIC
430 select GPIOLIB_IRQCHIP
431 select IRQ_DOMAIN_HIERARCHY
432 help
433 Say yes here to support the GPIO functionality of a number of Intel
434 IXP4xx series of chips.
435
436 If unsure, say N.
437
438config GPIO_LOGICVC
439 tristate "Xylon LogiCVC GPIO support"
440 depends on MFD_SYSCON && OF
441 help
442 Say yes here to support GPIO functionality of the Xylon LogiCVC
443 programmable logic block.
444
445config GPIO_LOONGSON
446 bool "Loongson-2/3 GPIO support"
447 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
448 help
449 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
450
451config GPIO_LOONGSON_64BIT
452 tristate "Loongson 64 bit GPIO support"
453 depends on LOONGARCH || COMPILE_TEST
454 select GPIO_GENERIC
455 select GPIOLIB_IRQCHIP
456 help
457 Say yes here to support the GPIO functionality of a number of
458 Loongson series of chips. The Loongson GPIO controller supports
459 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
460 the remaining 56 are reused with other functions, with edge or
461 level triggered interrupts.
462
463config GPIO_LPC18XX
464 tristate "NXP LPC18XX/43XX GPIO support"
465 default y if ARCH_LPC18XX
466 depends on ARCH_LPC18XX || COMPILE_TEST
467 select IRQ_DOMAIN_HIERARCHY
468 select GPIOLIB_IRQCHIP
469 help
470 Select this option to enable GPIO driver for
471 NXP LPC18XX/43XX devices.
472
473config GPIO_LPC32XX
474 tristate "NXP LPC32XX GPIO support"
475 depends on ARCH_LPC32XX || COMPILE_TEST
476 depends on OF
477 help
478 Select this option to enable GPIO driver for
479 NXP LPC32XX devices.
480
481config GPIO_MB86S7X
482 tristate "GPIO support for Fujitsu MB86S7x Platforms"
483 help
484 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
485
486config GPIO_MENZ127
487 tristate "MEN 16Z127 GPIO support"
488 depends on MCB
489 select GPIO_GENERIC
490 help
491 Say yes here to support the MEN 16Z127 GPIO Controller.
492
493config GPIO_MM_LANTIQ
494 bool "Lantiq Memory mapped GPIOs"
495 depends on LANTIQ && SOC_XWAY
496 help
497 This enables support for memory mapped GPIOs on the External Bus Unit
498 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
499 created by attaching a 16-bit latch to the bus.
500
501config GPIO_MPC5200
502 def_bool y
503 depends on PPC_MPC52xx
504
505config GPIO_MPC8XXX
506 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
507 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
508 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
509 COMPILE_TEST
510 select GPIO_GENERIC
511 select GPIOLIB_IRQCHIP
512 help
513 Say Y here if you're going to use hardware that connects to the
514 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
515
516config GPIO_MT7621
517 bool "Mediatek MT7621 GPIO Support"
518 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
519 depends on OF
520 select GPIO_GENERIC
521 select GPIOLIB_IRQCHIP
522 help
523 Say yes here to support the Mediatek MT7621 SoC GPIO device.
524
525config GPIO_MVEBU
526 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
527 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
528 default PLAT_ORION || ARCH_MVEBU
529 select GENERIC_IRQ_CHIP
530 select REGMAP_MMIO
531
532config GPIO_MXC
533 tristate "i.MX GPIO support"
534 depends on ARCH_MXC || COMPILE_TEST
535 select GPIO_GENERIC
536 select GENERIC_IRQ_CHIP
537
538config GPIO_MXS
539 bool "Freescale MXS GPIO support" if COMPILE_TEST
540 depends on ARCH_MXS || COMPILE_TEST
541 default y if ARCH_MXS
542 select GPIO_GENERIC
543 select GENERIC_IRQ_CHIP
544
545config GPIO_NOMADIK
546 bool "Nomadik GPIO driver"
547 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
548 select GPIOLIB_IRQCHIP
549 help
550 Say yes here to support the Nomadik SoC GPIO block. This block is also
551 used by the Mobileye EyeQ5 SoC.
552
553 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
554 It is deeply interconnected with the associated pinctrl driver as GPIO
555 registers handle muxing ("alternate functions") as well.
556
557config GPIO_NPCM_SGPIO
558 bool "Nuvoton SGPIO support"
559 depends on ARCH_NPCM || COMPILE_TEST
560 select GPIOLIB_IRQCHIP
561 help
562 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
563
564config GPIO_OCTEON
565 tristate "Cavium OCTEON GPIO"
566 depends on CAVIUM_OCTEON_SOC
567 default y
568 help
569 Say yes here to support the on-chip GPIO lines on the OCTEON
570 family of SOCs.
571
572config GPIO_OMAP
573 tristate "TI OMAP GPIO support"
574 depends on ARCH_OMAP || COMPILE_TEST
575 default y if ARCH_OMAP
576 select GENERIC_IRQ_CHIP
577 select GPIOLIB_IRQCHIP
578 help
579 Say yes here to enable GPIO support for TI OMAP SoCs.
580
581config GPIO_PL061
582 tristate "PrimeCell PL061 GPIO support"
583 depends on ARM_AMBA || COMPILE_TEST
584 select IRQ_DOMAIN
585 select GPIOLIB_IRQCHIP
586 help
587 Say yes here to support the PrimeCell PL061 GPIO device.
588
589config GPIO_POLARFIRE_SOC
590 bool "Microchip FPGA GPIO support"
591 select REGMAP_MMIO
592 select GPIOLIB_IRQCHIP
593 help
594 Say yes here to support the GPIO controllers on Microchip FPGAs.
595
596config GPIO_PPC44X
597 tristate "PPC44x GPIO support"
598 depends on 44x || COMPILE_TEST
599 select GPIO_GENERIC
600 help
601 Enable gpiolib support for ppc440 based boards.
602
603config GPIO_PXA
604 bool "PXA GPIO support"
605 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
606 select GPIOLIB_IRQCHIP
607 help
608 Say yes here to support the PXA GPIO device.
609
610config GPIO_RCAR
611 tristate "Renesas R-Car and RZ/G GPIO support"
612 depends on ARCH_RENESAS || COMPILE_TEST
613 select GPIOLIB_IRQCHIP
614 help
615 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
616
617config GPIO_RDA
618 bool "RDA Micro GPIO controller support"
619 depends on ARCH_RDA || COMPILE_TEST
620 select GPIO_GENERIC
621 select GPIOLIB_IRQCHIP
622 help
623 Say Y here to support RDA Micro GPIO controller.
624
625config GPIO_REALTEK_OTTO
626 tristate "Realtek Otto GPIO support"
627 depends on MACH_REALTEK_RTL || COMPILE_TEST
628 default MACH_REALTEK_RTL
629 select GPIO_GENERIC
630 select GPIOLIB_IRQCHIP
631 help
632 The GPIO controller on the Otto MIPS platform supports up to two
633 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
634 are grouped in four 8-bit wide ports.
635
636 When built as a module, the module will be called realtek_otto_gpio.
637
638config GPIO_REG
639 bool
640 help
641 A 32-bit single register GPIO fixed in/out implementation. This
642 can be used to represent any register as a set of GPIO signals.
643
644config GPIO_ROCKCHIP
645 tristate "Rockchip GPIO support"
646 depends on ARCH_ROCKCHIP || COMPILE_TEST
647 select GENERIC_IRQ_CHIP
648 select GPIOLIB_IRQCHIP
649 default ARCH_ROCKCHIP
650 help
651 Say yes here to support GPIO on Rockchip SoCs.
652
653config GPIO_RTD
654 tristate "Realtek DHC GPIO support"
655 depends on ARCH_REALTEK || COMPILE_TEST
656 default ARCH_REALTEK
657 select GPIOLIB_IRQCHIP
658 help
659 This option enables support for GPIOs found on Realtek DHC(Digital
660 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
661 RTD1319D, RTD1395, RTD1619 and RTD1619B.
662
663 Say yes here to support GPIO functionality and GPIO interrupt on
664 Realtek DHC SoCs.
665
666config GPIO_RTD1625
667 tristate "Realtek DHC RTD1625 GPIO support"
668 depends on ARCH_REALTEK || COMPILE_TEST
669 default ARCH_REALTEK
670 select GPIOLIB_IRQCHIP
671 select GPIO_REGMAP
672 select REGMAP_MMIO
673 help
674 This option enables support for the GPIO controller on Realtek
675 DHC (Digital Home Center) RTD1625 SoC.
676
677 Say yes here to support both basic GPIO line functionality
678 and GPIO interrupt handling capabilities for this platform.
679
680config GPIO_SAMA5D2_PIOBU
681 tristate "SAMA5D2 PIOBU GPIO support"
682 depends on OF
683 depends on MFD_SYSCON
684 depends on ARCH_AT91 || COMPILE_TEST
685 select GPIO_SYSCON
686 help
687 Say yes here to use the PIOBU pins as GPIOs.
688
689 PIOBU pins on the SAMA5D2 can be used as GPIOs.
690 The difference from regular GPIOs is that they
691 maintain their value during backup/self-refresh.
692
693config GPIO_SIFIVE
694 tristate "SiFive GPIO support"
695 depends on OF
696 select IRQ_DOMAIN_HIERARCHY
697 select GPIO_GENERIC
698 select GPIOLIB_IRQCHIP
699 select REGMAP_MMIO
700 help
701 Say yes here to support the GPIO device on SiFive SoCs.
702
703config GPIO_SIOX
704 tristate "SIOX GPIO support"
705 depends on SIOX
706 select GPIOLIB_IRQCHIP
707 help
708 Say yes here to support SIOX I/O devices. These are units connected
709 via a SIOX bus and have a number of fixed-direction I/O lines.
710
711config GPIO_SNPS_CREG
712 bool "Synopsys GPIO via CREG (Control REGisters) driver"
713 depends on ARC || COMPILE_TEST
714 help
715 This driver supports GPIOs via CREG on various Synopsys SoCs.
716 This is a single-register MMIO GPIO driver for complex cases
717 where only several fields in register belong to GPIO lines and
718 each GPIO line owns a field with different length and on/off value.
719
720config GPIO_SPACEMIT_K1
721 tristate "SPACEMIT K1 GPIO support"
722 depends on ARCH_SPACEMIT || COMPILE_TEST
723 depends on OF
724 select GPIO_GENERIC
725 select GPIOLIB_IRQCHIP
726 help
727 Say yes here to support the SpacemiT's K1 GPIO device.
728
729config GPIO_SPEAR_SPICS
730 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
731 depends on PLAT_SPEAR || COMPILE_TEST
732 select GENERIC_IRQ_CHIP
733 help
734 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
735
736config GPIO_SPRD
737 tristate "Spreadtrum GPIO support"
738 depends on ARCH_SPRD || COMPILE_TEST
739 select GPIOLIB_IRQCHIP
740 help
741 Say yes here to support Spreadtrum GPIO device.
742
743config GPIO_STP_XWAY
744 bool "XWAY STP GPIOs"
745 depends on SOC_XWAY || COMPILE_TEST
746 help
747 This enables support for the Serial To Parallel (STP) unit found on
748 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
749 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
750 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
751 phy status.
752
753config GPIO_SYSCON
754 tristate "GPIO based on SYSCON"
755 depends on MFD_SYSCON && OF
756 help
757 Say yes here to support GPIO functionality though SYSCON driver.
758
759config GPIO_TANGIER
760 tristate
761 select GPIOLIB_IRQCHIP
762 help
763 GPIO support for Intel Tangier and compatible platforms.
764 Currently supported:
765 - Elkhart Lake
766 - Merrifield
767
768 If built as a module its name will be gpio-tangier.
769
770config GPIO_TB10X
771 bool "Abilis Systems TB10x GPIO controller"
772 depends on ARC_PLAT_TB10X || COMPILE_TEST
773 select GPIO_GENERIC
774 select GENERIC_IRQ_CHIP
775
776config GPIO_TEGRA
777 tristate "NVIDIA Tegra GPIO support"
778 default ARCH_TEGRA
779 depends on ARCH_TEGRA || COMPILE_TEST
780 select GPIOLIB_IRQCHIP
781 select IRQ_DOMAIN_HIERARCHY
782 help
783 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
784
785config GPIO_TEGRA186
786 tristate "NVIDIA Tegra186 GPIO support"
787 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
788 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
789 depends on OF
790 select GPIOLIB_IRQCHIP
791 select IRQ_DOMAIN_HIERARCHY
792 help
793 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
794
795config GPIO_TS4800
796 tristate "TS-4800 DIO blocks and compatibles"
797 depends on SOC_IMX51 || COMPILE_TEST
798 select GPIO_GENERIC
799 help
800 This driver support TS-4800 FPGA GPIO controllers.
801
802config GPIO_THUNDERX
803 tristate "Cavium ThunderX/OCTEON-TX GPIO"
804 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
805 depends on PCI_MSI
806 select GPIOLIB_IRQCHIP
807 select IRQ_DOMAIN_HIERARCHY
808 select IRQ_FASTEOI_HIERARCHY_HANDLERS
809 help
810 Say yes here to support the on-chip GPIO lines on the ThunderX
811 and OCTEON-TX families of SoCs.
812
813config GPIO_UNIPHIER
814 tristate "UniPhier GPIO support"
815 depends on ARCH_UNIPHIER || COMPILE_TEST
816 select IRQ_DOMAIN_HIERARCHY
817 help
818 Say yes here to support UniPhier GPIOs.
819
820config GPIO_VF610
821 tristate "VF610 GPIO support"
822 default y if SOC_VF610
823 depends on ARCH_MXC || COMPILE_TEST
824 select GPIOLIB_IRQCHIP
825 select GPIO_GENERIC
826 help
827 Say yes here to support i.MX or Vybrid vf610 GPIOs.
828
829config GPIO_VISCONTI
830 tristate "Toshiba Visconti GPIO support"
831 depends on ARCH_VISCONTI || COMPILE_TEST
832 select GPIOLIB_IRQCHIP
833 select GPIO_GENERIC
834 select IRQ_DOMAIN_HIERARCHY
835 help
836 Say yes here to support GPIO on Tohisba Visconti.
837
838config GPIO_WAVESHARE_DSI_TOUCH
839 tristate "Waveshare GPIO controller for DSI panels"
840 depends on BACKLIGHT_CLASS_DEVICE
841 depends on I2C
842 select REGMAP_I2C
843 help
844 Enable support for the GPIO and PWM controller found on Waveshare DSI
845 TOUCH panel kits. It provides GPIOs (used for regulator control and
846 resets) and backlight support.
847
848config GPIO_WCD934X
849 tristate "Qualcomm WCD9340/WCD9341 GPIO controller driver"
850 depends on MFD_WCD934X
851 help
852 This driver is to support GPIO block found on the Qualcomm Technologies
853 Inc WCD9340/WCD9341 Audio Codec.
854
855config GPIO_XGENE
856 bool "APM X-Gene GPIO controller support"
857 depends on ARM64 || COMPILE_TEST
858 help
859 This driver is to support the GPIO block within the APM X-Gene SoC
860 platform's generic flash controller. The GPIO pins are muxed with
861 the generic flash controller's address and data pins. Say yes
862 here to enable the GFC GPIO functionality.
863
864config GPIO_XGENE_SB
865 tristate "APM X-Gene GPIO standby controller support"
866 depends on (ARCH_XGENE || COMPILE_TEST)
867 select GPIO_GENERIC
868 select GPIOLIB_IRQCHIP
869 select IRQ_DOMAIN_HIERARCHY
870 help
871 This driver supports the GPIO block within the APM X-Gene
872 Standby Domain. Say yes here to enable the GPIO functionality.
873
874config GPIO_XILINX
875 tristate "Xilinx GPIO support"
876 select GPIOLIB_IRQCHIP
877 help
878 Say yes here to support the Xilinx FPGA GPIO device.
879
880config GPIO_XLP
881 tristate "Cavium ThunderX2 GPIO support"
882 depends on ARCH_THUNDER2 || COMPILE_TEST
883 select GPIOLIB_IRQCHIP
884 help
885 This driver provides support for GPIO interface on Cavium's ThunderX2
886 CN99XX SoCs (Originally from Netlogic XLP).
887
888 If unsure, say N.
889
890config GPIO_XTENSA
891 bool "Xtensa GPIO32 support"
892 depends on XTENSA
893 depends on HAVE_XTENSA_GPIO32
894 depends on !SMP
895 help
896 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
897 and EXPSTATE (output) ports.
898
899config GPIO_ZEVIO
900 bool "LSI ZEVIO SoC memory mapped GPIOs"
901 depends on ARM || COMPILE_TEST
902 help
903 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
904
905config GPIO_ZYNQ
906 tristate "Xilinx Zynq GPIO support"
907 depends on ARCH_ZYNQ || ARCH_ZYNQMP || COMPILE_TEST
908 select GPIOLIB_IRQCHIP
909 help
910 Say yes here to support Xilinx Zynq GPIO controller.
911
912config GPIO_ZYNQMP_MODEPIN
913 tristate "ZynqMP ps-mode pin GPIO configuration driver"
914 depends on ZYNQMP_FIRMWARE || COMPILE_TEST
915 default ZYNQMP_FIRMWARE
916 help
917 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
918 driver.
919
920 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
921 is 4-bits boot mode pins. It sets and gets the status of
922 the ps-mode pin. Every pin can be configured as input/output.
923
924config GPIO_LOONGSON1
925 tristate "Loongson1 GPIO support"
926 depends on MACH_LOONGSON32 || COMPILE_TEST
927 select GPIO_GENERIC
928 help
929 Say Y or M here to support GPIO on Loongson1 SoCs.
930
931config GPIO_AMD_FCH
932 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
933 help
934 This option enables driver for GPIO on AMD's Fusion Controller Hub,
935 as found on G-series SOCs (e.g. GX-412TC).
936
937 Note: This driver doesn't register itself automatically, as it
938 needs to be provided with platform-specific configuration.
939 (See e.g. CONFIG_PCENGINES_APU2.)
940
941config GPIO_MSC313
942 bool "MStar MSC313 GPIO support"
943 depends on ARCH_MSTARV7 || COMPILE_TEST
944 default ARCH_MSTARV7
945 select GPIOLIB_IRQCHIP
946 select IRQ_DOMAIN_HIERARCHY
947 help
948 Say Y here to support the main GPIO block on MStar/SigmaStar
949 ARMv7-based SoCs.
950
951config GPIO_IDT3243X
952 tristate "IDT 79RC3243X GPIO support"
953 depends on MIKROTIK_RB532 || COMPILE_TEST
954 select GPIO_GENERIC
955 select GPIOLIB_IRQCHIP
956 help
957 Select this option to enable GPIO driver for
958 IDT 79RC3243X-based devices like Mikrotik RB532.
959
960 To compile this driver as a module, choose M here: the module will
961 be called gpio-idt3243x.
962
963endmenu
964
965menu "Port-mapped I/O GPIO drivers"
966 depends on X86 || COMPILE_TEST
967 depends on HAS_IOPORT # I/O space access
968
969config GPIO_VX855
970 tristate "VIA VX855/VX875 GPIO"
971 depends on PCI
972 select MFD_CORE
973 select MFD_VX855
974 help
975 Support access to the VX855/VX875 GPIO lines through the GPIO library.
976
977 This driver provides common support for accessing the device.
978 Additional drivers must be enabled in order to use the
979 functionality of the device.
980
981config GPIO_I8255
982 tristate
983 select GPIO_REGMAP
984 help
985 Enables support for the i8255 interface library functions. The i8255
986 interface library provides functions to facilitate communication with
987 interfaces compatible with the venerable Intel 8255 Programmable
988 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
989 in the early 1970s but compatible interfaces are nowadays typically
990 found embedded in larger VLSI processing chips and FPGA components.
991
992 If built as a module its name will be gpio-i8255.
993
994config GPIO_104_DIO_48E
995 tristate "ACCES 104-DIO-48E GPIO support"
996 depends on PC104
997 select ISA_BUS_API
998 select REGMAP_MMIO
999 select REGMAP_IRQ
1000 select GPIOLIB_IRQCHIP
1001 select GPIO_I8255
1002 select I8254
1003 help
1004 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
1005 104-DIO-24E). The base port addresses for the devices may be
1006 configured via the base module parameter. The interrupt line numbers
1007 for the devices may be configured via the irq module parameter.
1008
1009config GPIO_104_IDIO_16
1010 tristate "ACCES 104-IDIO-16 GPIO support"
1011 depends on PC104
1012 select ISA_BUS_API
1013 select REGMAP_MMIO
1014 select GPIO_IDIO_16
1015 help
1016 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
1017 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
1018 base port addresses for the devices may be configured via the base
1019 module parameter. The interrupt line numbers for the devices may be
1020 configured via the irq module parameter.
1021
1022config GPIO_104_IDI_48
1023 tristate "ACCES 104-IDI-48 GPIO support"
1024 depends on PC104
1025 select ISA_BUS_API
1026 select REGMAP_MMIO
1027 select REGMAP_IRQ
1028 select GPIOLIB_IRQCHIP
1029 select GPIO_REGMAP
1030 help
1031 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
1032 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
1033 the devices may be configured via the base module parameter. The
1034 interrupt line numbers for the devices may be configured via the irq
1035 module parameter.
1036
1037config GPIO_F7188X
1038 tristate "Fintek and Nuvoton Super-I/O GPIO support"
1039 help
1040 This option enables support for GPIOs found on Fintek Super-I/O
1041 chips F71869, F71869A, F71882FG, F71889F and F81866.
1042 As well as Nuvoton Super-I/O chip NCT6126D.
1043
1044 To compile this driver as a module, choose M here: the module will
1045 be called f7188x-gpio.
1046
1047config GPIO_GPIO_MM
1048 tristate "Diamond Systems GPIO-MM GPIO support"
1049 depends on PC104
1050 select ISA_BUS_API
1051 select REGMAP_MMIO
1052 select GPIO_I8255
1053 help
1054 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
1055
1056 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
1057 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
1058 support for these 48 channels of digital I/O.
1059
1060 The base port addresses for the devices may be configured via the base
1061 array module parameter.
1062
1063config GPIO_IT87
1064 tristate "IT87xx GPIO support"
1065 help
1066 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
1067
1068 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
1069 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
1070 well.
1071
1072 To compile this driver as a module, choose M here: the module will
1073 be called gpio_it87.
1074
1075config GPIO_SCH
1076 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1077 depends on (X86 || COMPILE_TEST) && ACPI
1078 depends on LPC_SCH
1079 select GPIOLIB_IRQCHIP
1080 help
1081 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1082 Intel Tunnel Creek processor, Intel Centerton processor or
1083 Intel Quark X1000 SoC.
1084
1085 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1086 powered by the core power rail and are turned off during sleep
1087 modes (S3 and higher). The remaining four GPIOs are powered by
1088 the Intel SCH suspend power supply. These GPIOs remain
1089 active during S3. The suspend-powered GPIOs can be used to wake the
1090 system from the Suspend-to-RAM state.
1091
1092 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1093 core power rail and 9 from suspend power supply.
1094
1095 The Intel Centerton processor has a total of 30 GPIO pins.
1096 Twenty-one are powered by the core power rail and 9 from the
1097 suspend power supply.
1098
1099 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1100 power well and 6 from the suspend power well.
1101
1102config GPIO_NOVALAKE
1103 tristate "Intel Nova Lake GPIO-signaled ACPI events support"
1104 depends on (X86 || COMPILE_TEST) && ACPI
1105 select GPIOLIB_IRQCHIP
1106 help
1107 Select this to enable GPIO-signaled ACPI events support on platforms
1108 with the following SoCs:
1109
1110 - Intel Nova Lake
1111
1112 This driver adds support for new mode of handling platform events,
1113 through the use of GPIO-signaled ACPI events. Main purpose is to
1114 handle platform IRQs that originate in PCH components, for example
1115 interrupt triggered by Power Management Event (PME).
1116
1117 This driver, at this time, is not required to handle platform events.
1118 Listed platform(s) will stay in legacy mode, handling ACPI events as
1119 in previous generations. However, future platforms will eventually
1120 switch to new handling mode, requiring this driver to run events
1121 properly.
1122
1123 Driver supports up to 128 GPIO pins per GPE block.
1124
1125 To compile this driver as a module, choose M here: the module will
1126 be called gpio-novalake-events.
1127
1128config GPIO_SCH311X
1129 tristate "SMSC SCH311x SuperI/O GPIO"
1130 help
1131 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1132 SCH3116 "Super I/O" chipsets.
1133
1134 To compile this driver as a module, choose M here: the module will
1135 be called gpio-sch311x.
1136
1137config GPIO_WINBOND
1138 tristate "Winbond Super I/O GPIO support"
1139 select ISA_BUS_API
1140 help
1141 This option enables support for GPIOs found on Winbond Super I/O
1142 chips.
1143 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1144 supported.
1145
1146 You will need to provide a module parameter "gpios", or a
1147 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1148 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1149
1150 To compile this driver as a module, choose M here: the module will
1151 be called gpio-winbond.
1152
1153config GPIO_WS16C48
1154 tristate "WinSystems WS16C48 GPIO support"
1155 select ISA_BUS_API
1156 select REGMAP_IRQ
1157 select REGMAP_MMIO
1158 select GPIOLIB_IRQCHIP
1159 select GPIO_REGMAP
1160 help
1161 Enables GPIO support for the WinSystems WS16C48. The base port
1162 addresses for the devices may be configured via the base module
1163 parameter. The interrupt line numbers for the devices may be
1164 configured via the irq module parameter.
1165
1166endmenu
1167
1168menu "I2C GPIO expanders"
1169 depends on I2C
1170
1171config GPIO_ADNP
1172 tristate "Avionic Design N-bit GPIO expander"
1173 depends on OF
1174 select GPIOLIB_IRQCHIP
1175 help
1176 This option enables support for N GPIOs found on Avionic Design
1177 I2C GPIO expanders. The register space will be extended by powers
1178 of two, so the controller will need to accommodate for that. For
1179 example: if a controller provides 48 pins, 6 registers will be
1180 enough to represent all pins, but the driver will assume a
1181 register layout for 64 pins (8 registers).
1182
1183config GPIO_FXL6408
1184 tristate "FXL6408 I2C GPIO expander"
1185 select GPIO_REGMAP
1186 select REGMAP_I2C
1187 help
1188 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1189
1190 To compile this driver as a module, choose M here: the module will
1191 be called gpio-fxl6408.
1192
1193config GPIO_DS4520
1194 tristate "DS4520 I2C GPIO expander"
1195 select REGMAP_I2C
1196 select GPIO_REGMAP
1197 help
1198 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1199 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1200
1201 To compile this driver as a module, choose M here: the module will
1202 be called gpio-ds4520.
1203
1204config GPIO_GW_PLD
1205 tristate "Gateworks PLD GPIO Expander"
1206 depends on OF
1207 help
1208 Say yes here to provide access to the Gateworks I2C PLD GPIO
1209 Expander. This is used at least on the Cambria GW2358-4.
1210
1211config GPIO_MAX7300
1212 tristate "Maxim MAX7300 GPIO expander"
1213 select GPIO_MAX730X
1214 help
1215 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1216
1217config GPIO_MAX732X
1218 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1219 help
1220 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1221 Port Expanders. Each IO port on these chips has a fixed role of
1222 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1223 Input and Output (designed by 'P'). The combinations are listed
1224 below:
1225
1226 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1227 max7322 (4I4O), max7323 (4P4O)
1228
1229 16 bits: max7324 (8I8O), max7325 (8P8O),
1230 max7326 (4I12O), max7327 (4P12O)
1231
1232 Board setup code must specify the model to use, and the start
1233 number for these GPIOs.
1234
1235config GPIO_MAX732X_IRQ
1236 bool "Interrupt controller support for MAX732x"
1237 depends on GPIO_MAX732X=y
1238 select GPIOLIB_IRQCHIP
1239 help
1240 Say yes here to enable the max732x to be used as an interrupt
1241 controller. It requires the driver to be built in the kernel.
1242
1243config GPIO_PCA953X
1244 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1245 select REGMAP_I2C
1246 help
1247 Say yes here to provide access to several register-oriented
1248 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1249 models include:
1250
1251 4 bits: pca9536, pca9537
1252
1253 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1254 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202,
1255 pcal6408, pcal9554b, tca9538, tcal6408
1256
1257 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1258 tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318,
1259 tca9539, tcal6416
1260
1261 18 bits: tca6418
1262
1263 24 bits: tca6424, pcal6524
1264
1265 40 bits: pca9505, pca9698, pca9506
1266
1267config GPIO_PCA953X_IRQ
1268 bool "Interrupt controller support for PCA953x"
1269 depends on GPIO_PCA953X
1270 select GPIOLIB_IRQCHIP
1271 help
1272 Say yes here to enable the pca953x to be used as an interrupt
1273 controller.
1274
1275config GPIO_PCA9570
1276 tristate "PCA9570 4-Bit I2C GPO expander"
1277 help
1278 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1279
1280 To compile this driver as a module, choose M here: the module will
1281 be called gpio-pca9570.
1282
1283config GPIO_PCF857X
1284 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1285 select GPIOLIB_IRQCHIP
1286 select IRQ_DOMAIN
1287 help
1288 Say yes here to provide access to most "quasi-bidirectional" I2C
1289 GPIO expanders used for additional digital outputs or inputs.
1290 Most of these parts are from NXP, though TI is a second source for
1291 some of them. Compatible models include:
1292
1293 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1294 pca9670, pca9672, pca9674, pca9674a,
1295 max7328, max7329
1296
1297 16 bits: pcf8575, pcf8575c, pca8575,
1298 pca9671, pca9673, pca9675
1299
1300 Your board setup code will need to declare the expanders in
1301 use, and assign numbers to the GPIOs they expose. Those GPIOs
1302 can then be used from drivers and other kernel code, just like
1303 other GPIOs, but only accessible from task contexts.
1304
1305 This driver provides an in-kernel interface to those GPIOs using
1306 platform-neutral GPIO calls.
1307
1308config GPIO_TPIC2810
1309 tristate "TPIC2810 8-Bit I2C GPO expander"
1310 help
1311 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1312
1313 To compile this driver as a module, choose M here: the module will
1314 be called gpio-tpic2810.
1315
1316config GPIO_TS4900
1317 tristate "Technologic Systems FPGA I2C GPIO"
1318 depends on SOC_IMX6 || COMPILE_TEST
1319 select REGMAP_I2C
1320 help
1321 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1322 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1323
1324endmenu
1325
1326menu "MFD GPIO expanders"
1327
1328config GPIO_ADP5520
1329 tristate "GPIO Support for ADP5520 PMIC"
1330 depends on PMIC_ADP5520
1331 help
1332 This option enables support for on-chip GPIO found
1333 on Analog Devices ADP5520 PMICs.
1334
1335config GPIO_ADP5585
1336 tristate "GPIO Support for ADP5585"
1337 depends on MFD_ADP5585
1338 select GPIOLIB_IRQCHIP
1339 help
1340 This option enables support for the GPIO function found in the Analog
1341 Devices ADP5585.
1342
1343config GPIO_ALTERA_A10SR
1344 tristate "Altera Arria10 System Resource GPIO"
1345 depends on MFD_ALTERA_A10SR
1346 help
1347 Driver for Arria10 Development Kit GPIO expansion which
1348 includes reads of pushbuttons and DIP switches as well
1349 as writes to LEDs.
1350
1351config GPIO_ARIZONA
1352 tristate "Wolfson Microelectronics Arizona class devices"
1353 depends on MFD_ARIZONA
1354 help
1355 Support for GPIOs on Wolfson Arizona class devices.
1356
1357config GPIO_BD71815
1358 tristate "ROHM BD71815 PMIC GPIO support"
1359 depends on MFD_ROHM_BD71828
1360 help
1361 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1362 available on the ROHM PMIC.
1363
1364 This driver can also be built as a module. If so, the module
1365 will be called gpio-bd71815.
1366
1367config GPIO_BD71828
1368 tristate "ROHM BD71828 GPIO support"
1369 depends on MFD_ROHM_BD71828
1370 help
1371 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1372 available on the ROHM PMIC in total. The GPIOs are limited to
1373 outputs only and pins must be configured to GPIO outputs by
1374 OTP. Enable this only if you want to use these pins as outputs.
1375
1376 This driver can also be built as a module. If so, the module
1377 will be called gpio-bd71828.
1378
1379config GPIO_BD72720
1380 tristate "ROHM BD72720 and BD73900 PMIC GPIO support"
1381 depends on MFD_ROHM_BD71828
1382 help
1383 Support for GPIO on ROHM BD72720 and BD73900 PMICs. There are two
1384 pins which can be configured to GPI or GPO, and three pins which can
1385 be configured to GPO on the ROHM PMIC. The pin configuration is done
1386 on OTP at manufacturing.
1387
1388config GPIO_BD9571MWV
1389 tristate "ROHM BD9571 GPIO support"
1390 depends on MFD_BD9571MWV
1391 help
1392 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1393 available on the ROHM PMIC in total, both of which can also
1394 generate interrupts.
1395
1396 This driver can also be built as a module. If so, the module
1397 will be called gpio-bd9571mwv.
1398
1399config GPIO_CGBC
1400 tristate "Congatec Board Controller GPIO support"
1401 depends on MFD_CGBC
1402 help
1403 Select this option to enable GPIO support for the Congatec Board
1404 Controller.
1405
1406 This driver can also be built as a module. If so, the module will be
1407 called gpio-cgbc.
1408
1409config GPIO_CROS_EC
1410 tristate "ChromeOS EC GPIO support"
1411 depends on CROS_EC
1412 help
1413 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1414 cannot be set unless the system is unlocked.
1415
1416 This driver can also be built as a module. If so, the module
1417 will be called gpio-cros-ec.
1418
1419config GPIO_CRYSTAL_COVE
1420 tristate "GPIO support for Crystal Cove PMIC"
1421 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1422 select GPIOLIB_IRQCHIP
1423 help
1424 Support for GPIO pins on Crystal Cove PMIC.
1425
1426 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1427 inside.
1428
1429 This driver can also be built as a module. If so, the module will be
1430 called gpio-crystalcove.
1431
1432config GPIO_CS5535
1433 tristate "AMD CS5535/CS5536 GPIO support"
1434 depends on X86 || MIPS || COMPILE_TEST
1435 depends on MFD_CS5535
1436 help
1437 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1438 can be used for quite a number of things. The CS5535/6 is found on
1439 AMD Geode and Lemote Yeeloong devices.
1440
1441 If unsure, say N.
1442
1443config GPIO_DA9052
1444 tristate "Dialog DA9052 GPIO"
1445 depends on PMIC_DA9052
1446 help
1447 Say yes here to enable the GPIO driver for the DA9052 chip.
1448
1449config GPIO_DA9055
1450 tristate "Dialog Semiconductor DA9055 GPIO"
1451 depends on MFD_DA9055
1452 help
1453 Say yes here to enable the GPIO driver for the DA9055 chip.
1454
1455 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1456 be controlled by this driver.
1457
1458 If driver is built as a module it will be called gpio-da9055.
1459
1460config GPIO_DLN2
1461 tristate "Diolan DLN2 GPIO support"
1462 depends on MFD_DLN2
1463 select GPIOLIB_IRQCHIP
1464
1465 help
1466 Select this option to enable GPIO driver for the Diolan DLN2
1467 board.
1468
1469 This driver can also be built as a module. If so, the module
1470 will be called gpio-dln2.
1471
1472config HTC_EGPIO
1473 bool "HTC EGPIO support"
1474 depends on ARM || COMPILE_TEST
1475 help
1476 This driver supports the CPLD egpio chip present on
1477 several HTC phones. It provides basic support for input
1478 pins, output pins, and IRQs.
1479
1480config GPIO_ELKHARTLAKE
1481 tristate "Intel Elkhart Lake PSE GPIO support"
1482 depends on INTEL_EHL_PSE_IO
1483 select GPIO_TANGIER
1484 help
1485 Select this option to enable GPIO support for Intel Elkhart Lake
1486 PSE GPIO IP.
1487
1488 To compile this driver as a module, choose M here: the module will
1489 be called gpio-elkhartlake.
1490
1491config GPIO_JANZ_TTL
1492 tristate "Janz VMOD-TTL Digital IO Module"
1493 depends on MFD_JANZ_CMODIO
1494 help
1495 This enables support for the Janz VMOD-TTL Digital IO module.
1496 This driver provides support for driving the pins in output
1497 mode only. Input mode is not supported.
1498
1499config GPIO_KEMPLD
1500 tristate "Kontron ETX / COMexpress GPIO"
1501 depends on MFD_KEMPLD
1502 select GPIOLIB_IRQCHIP
1503 help
1504 This enables support for the PLD GPIO interface on some Kontron ETX
1505 and COMexpress (ETXexpress) modules.
1506
1507 This driver can also be built as a module. If so, the module will be
1508 called gpio-kempld.
1509
1510config GPIO_LJCA
1511 tristate "INTEL La Jolla Cove Adapter GPIO support"
1512 depends on USB_LJCA
1513 select GPIOLIB_IRQCHIP
1514 default USB_LJCA
1515 help
1516 Select this option to enable GPIO driver for the INTEL
1517 La Jolla Cove Adapter (LJCA) board.
1518
1519 This driver can also be built as a module. If so, the module
1520 will be called gpio-ljca.
1521
1522config GPIO_LP3943
1523 tristate "TI/National Semiconductor LP3943 GPIO expander"
1524 depends on MFD_LP3943
1525 help
1526 GPIO driver for LP3943 MFD.
1527 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1528 Open drain outputs are required for this usage.
1529
1530config GPIO_LP873X
1531 tristate "TI LP873X GPO"
1532 depends on MFD_TI_LP873X
1533 help
1534 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1535 on LP873X PMICs.
1536
1537 This driver can also be built as a module. If so, the module will be
1538 called gpio-lp873x.
1539
1540config GPIO_LP87565
1541 tristate "TI LP87565 GPIO"
1542 depends on MFD_TI_LP87565
1543 help
1544 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1545 on LP87565 PMICs.
1546
1547 This driver can also be built as a module. If so, the module will be
1548 called gpio-lp87565.
1549
1550config GPIO_MACSMC
1551 tristate "Apple Mac SMC GPIO"
1552 depends on MFD_MACSMC
1553 help
1554 Support for GPIOs controlled by the SMC microcontroller on Apple Mac
1555 systems.
1556
1557 This driver can also be built as a module. If so, the module will be
1558 called gpio-macsmc.
1559
1560config GPIO_MADERA
1561 tristate "Cirrus Logic Madera class codecs"
1562 depends on PINCTRL_MADERA
1563 help
1564 Support for GPIOs on Cirrus Logic Madera class codecs.
1565
1566config GPIO_MAX7360
1567 tristate "MAX7360 GPIO support"
1568 depends on MFD_MAX7360
1569 select GPIO_REGMAP
1570 select REGMAP_IRQ
1571 help
1572 Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL
1573 lines as GPO.
1574
1575 This driver can also be built as a module. If so, the module will be
1576 called gpio-max7360.
1577
1578config GPIO_MAX77620
1579 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1580 depends on MFD_MAX77620
1581 select GPIOLIB_IRQCHIP
1582 help
1583 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1584 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1585 driver also provides interrupt support for each of the GPIOs.
1586 Say yes here to enable the max77620 to be used as GPIO controller.
1587
1588config GPIO_MAX77650
1589 tristate "Maxim MAX77650/77651 GPIO support"
1590 depends on MFD_MAX77650
1591 help
1592 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1593 These chips have a single pin that can be configured as GPIO.
1594
1595config GPIO_MAX77759
1596 tristate "Maxim Integrated MAX77759 GPIO support"
1597 depends on MFD_MAX77759
1598 default MFD_MAX77759
1599 select GPIOLIB_IRQCHIP
1600 help
1601 GPIO driver for MAX77759 PMIC from Maxim Integrated.
1602 There are two GPIOs available on these chips in total, both of
1603 which can also generate interrupts.
1604
1605 This driver can also be built as a module. If so, the module will be
1606 called gpio-max77759.
1607
1608config GPIO_NCT6694
1609 tristate "Nuvoton NCT6694 GPIO controller support"
1610 depends on MFD_NCT6694
1611 select GENERIC_IRQ_CHIP
1612 select GPIOLIB_IRQCHIP
1613 help
1614 This driver supports 8 GPIO pins per bank that can all be interrupt
1615 sources.
1616
1617 This driver can also be built as a module. If so, the module will be
1618 called gpio-nct6694.
1619
1620config GPIO_PALMAS
1621 tristate "TI PALMAS series PMICs GPIO"
1622 depends on MFD_PALMAS
1623 help
1624 Select this option to enable GPIO driver for the TI PALMAS
1625 series chip family.
1626
1627config GPIO_PMIC_EIC_SPRD
1628 tristate "Spreadtrum PMIC EIC support"
1629 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1630 select GPIOLIB_IRQCHIP
1631 help
1632 Say yes here to support Spreadtrum PMIC EIC device.
1633
1634config GPIO_QIXIS_FPGA
1635 tristate "NXP QIXIS FPGA GPIO support"
1636 depends on MFD_SIMPLE_MFD_I2C || COMPILE_TEST
1637 select GPIO_REGMAP
1638 select REGMAP_MMIO
1639 help
1640 This enables support for the GPIOs found in the QIXIS FPGA which is
1641 integrated on some NXP Layerscape boards such as LX2160ARDB and
1642 LS1046AQDS.
1643
1644config GPIO_RC5T583
1645 bool "RICOH RC5T583 GPIO"
1646 depends on MFD_RC5T583
1647 help
1648 Select this option to enable GPIO driver for the Ricoh RC5T583
1649 chip family.
1650 This driver provides the support for driving/reading the GPIO pins
1651 of RC5T583 device through standard GPIO library.
1652
1653config GPIO_SL28CPLD
1654 tristate "Kontron sl28cpld GPIO support"
1655 depends on MFD_SL28CPLD || COMPILE_TEST
1656 select GPIO_REGMAP
1657 select GPIOLIB_IRQCHIP
1658 select REGMAP_IRQ
1659 help
1660 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1661
1662 This driver can also be built as a module. If so, the module will be
1663 called gpio-sl28cpld.
1664
1665config GPIO_STMPE
1666 tristate "STMPE GPIOs"
1667 depends on MFD_STMPE
1668 select GPIOLIB_IRQCHIP
1669 help
1670 This enables support for the GPIOs found on the STMPE I/O
1671 Expanders.
1672
1673config GPIO_TC3589X
1674 bool "TC3589X GPIOs"
1675 depends on MFD_TC3589X
1676 select GPIOLIB_IRQCHIP
1677 help
1678 This enables support for the GPIOs found on the TC3589X
1679 I/O Expander.
1680
1681config GPIO_TIMBERDALE
1682 bool "Support for timberdale GPIO IP"
1683 depends on MFD_TIMBERDALE
1684 select GPIOLIB_IRQCHIP
1685 help
1686 Add support for the GPIO IP in the timberdale FPGA.
1687
1688config GPIO_TN48M_CPLD
1689 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1690 depends on MFD_TN48M_CPLD || COMPILE_TEST
1691 select GPIO_REGMAP
1692 help
1693 This enables support for the GPIOs found on the Delta
1694 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1695 they are input-only or output-only type.
1696
1697 This driver can also be built as a module. If so, the
1698 module will be called gpio-tn48m.
1699
1700config GPIO_TPS65086
1701 tristate "TI TPS65086 GPO"
1702 depends on MFD_TPS65086
1703 help
1704 This driver supports the GPO on TI TPS65086x PMICs.
1705
1706config GPIO_TPS65218
1707 tristate "TPS65218 GPIO"
1708 depends on MFD_TPS65218
1709 help
1710 Select this option to enable GPIO driver for the TPS65218
1711 chip family.
1712
1713config GPIO_TPS65219
1714 tristate "TPS65219 GPIO"
1715 depends on MFD_TPS65219
1716 default MFD_TPS65219
1717 help
1718 Select this option to enable GPIO driver for the TPS65219 chip
1719 family.
1720 GPIO0 is statically configured as either input or output prior to
1721 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1722 is statically configured by NVM. GPIO0 can't be used as a generic
1723 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1724 MULTI_DEVICE_EN=1.
1725
1726 This driver can also be built as a module. If so, the module will be
1727 called gpio_tps65219.
1728
1729config GPIO_TPS6586X
1730 bool "TPS6586X GPIO"
1731 depends on MFD_TPS6586X
1732 help
1733 Select this option to enable GPIO driver for the TPS6586X
1734 chip family.
1735
1736config GPIO_TPS65910
1737 bool "TPS65910 GPIO"
1738 depends on MFD_TPS65910
1739 help
1740 Select this option to enable GPIO driver for the TPS65910
1741 chip family.
1742
1743config GPIO_TPS65912
1744 tristate "TI TPS65912 GPIO"
1745 depends on MFD_TPS65912
1746 help
1747 This driver supports TPS65912 GPIO chip.
1748
1749config GPIO_TPS68470
1750 tristate "TPS68470 GPIO"
1751 depends on INTEL_SKL_INT3472
1752 help
1753 Select this option to enable GPIO driver for the TPS68470
1754 chip family.
1755 There are 7 GPIOs and few sensor-related GPIOs supported
1756 by the TPS68470. While the 7 GPIOs can be configured as
1757 input or output as appropriate, the sensor related GPIOs
1758 are "output only" GPIOs.
1759
1760config GPIO_TQMX86
1761 tristate "TQ-Systems TQMx86 GPIO"
1762 depends on MFD_TQMX86 || COMPILE_TEST
1763 depends on HAS_IOPORT_MAP
1764 select GPIOLIB_IRQCHIP
1765 help
1766 This driver supports GPIO on the TQMX86 IO controller.
1767
1768config GPIO_TWL4030
1769 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1770 depends on TWL4030_CORE
1771 help
1772 Say yes here to access the GPIO signals of various multi-function
1773 power management chips from Texas Instruments.
1774
1775config GPIO_TWL6040
1776 tristate "TWL6040 GPO"
1777 depends on TWL6040_CORE
1778 help
1779 Say yes here to access the GPO signals of twl6040
1780 audio chip from Texas Instruments.
1781
1782config GPIO_WHISKEY_COVE
1783 tristate "GPIO support for Whiskey Cove PMIC"
1784 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1785 select GPIOLIB_IRQCHIP
1786 help
1787 Support for GPIO pins on Whiskey Cove PMIC.
1788
1789 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1790 inside.
1791
1792 This driver can also be built as a module. If so, the module will be
1793 called gpio-wcove.
1794
1795config GPIO_WM831X
1796 tristate "WM831x GPIOs"
1797 depends on MFD_WM831X
1798 help
1799 Say yes here to access the GPIO signals of WM831x power management
1800 chips from Wolfson Microelectronics.
1801
1802config GPIO_WM8350
1803 tristate "WM8350 GPIOs"
1804 depends on MFD_WM8350
1805 help
1806 Say yes here to access the GPIO signals of WM8350 power management
1807 chips from Wolfson Microelectronics.
1808
1809config GPIO_WM8994
1810 tristate "WM8994 GPIOs"
1811 depends on MFD_WM8994
1812 help
1813 Say yes here to access the GPIO signals of WM8994 audio hub
1814 CODECs from Wolfson Microelectronics.
1815
1816endmenu
1817
1818menu "Auxiliary Bus GPIO drivers"
1819 depends on AUXILIARY_BUS
1820
1821config GPIO_LTC4283
1822 tristate "Analog Devices LTC4283 GPIO support"
1823 depends on SENSORS_LTC4283
1824 help
1825 If you say yes here you want the GPIO function available in Analog
1826 Devices LTC4283 Negative Voltage Hot Swap Controller.
1827
1828 This driver can also be built as a module. If so, the module will
1829 be called gpio-ltc4283.
1830
1831endmenu
1832
1833menu "PCI GPIO expanders"
1834 depends on PCI
1835
1836config GPIO_AMD8111
1837 tristate "AMD 8111 GPIO driver"
1838 depends on X86 || COMPILE_TEST
1839 depends on HAS_IOPORT_MAP
1840 help
1841 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1842
1843 Note that usually system firmware/ACPI handles GPIO pins on their
1844 own and users might easily break their systems with uncareful usage
1845 of this driver!
1846
1847 If unsure, say N
1848
1849config GPIO_BT8XX
1850 tristate "BT8XX GPIO abuser"
1851 depends on VIDEO_BT848=n || COMPILE_TEST
1852 help
1853 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1854 as a cheap PCI GPIO card.
1855
1856 This chip can be found on Miro, Hauppauge and STB TV-cards.
1857
1858 The card needs to be physically altered for using it as a
1859 GPIO card. For more information on how to build a GPIO card
1860 from a BT8xx TV card, see the documentation file at
1861 Documentation/driver-api/gpio/bt8xxgpio.rst
1862
1863 If unsure, say N.
1864
1865config GPIO_MERRIFIELD
1866 tristate "Intel Merrifield GPIO support"
1867 depends on X86_INTEL_MID
1868 select GPIO_TANGIER
1869 help
1870 Say Y here to support Intel Merrifield GPIO.
1871
1872config GPIO_MLXBF
1873 tristate "Mellanox BlueField SoC GPIO"
1874 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1875 select GPIO_GENERIC
1876 help
1877 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1878
1879config GPIO_MLXBF2
1880 tristate "Mellanox BlueField 2 SoC GPIO"
1881 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1882 select GPIO_GENERIC
1883 select GPIOLIB_IRQCHIP
1884 help
1885 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1886
1887config GPIO_MLXBF3
1888 tristate "Mellanox BlueField 3 SoC GPIO"
1889 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1890 select GPIO_GENERIC
1891 select GPIOLIB_IRQCHIP
1892 help
1893 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1894 This GPIO controller supports interrupt handling and enables the
1895 manipulation of certain GPIO pins.
1896 This controller should be used in parallel with pinctrl-mlxbf3 to
1897 control the desired GPIOs.
1898 This driver can also be built as a module called mlxbf3-gpio.
1899
1900config GPIO_ML_IOH
1901 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1902 depends on X86 || COMPILE_TEST
1903 select GENERIC_IRQ_CHIP
1904 help
1905 ML7213 is companion chip for Intel Atom E6xx series.
1906 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1907 Hub) which is for IVI (In-Vehicle Infotainment) use.
1908 This driver can access the IOH's GPIO device.
1909
1910config GPIO_PCH
1911 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1912 depends on X86_32 || MIPS || COMPILE_TEST
1913 select GENERIC_IRQ_CHIP
1914 help
1915 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1916 which is an IOH (Input/Output Hub) for x86 embedded processor.
1917 This driver can access PCH GPIO device.
1918
1919 This driver also can be used for LAPIS Semiconductor IOH (Input/
1920 Output Hub), ML7223 and ML7831.
1921 ML7223 IOH is for MP (Media Phone) use.
1922 ML7831 IOH is for general purpose use.
1923 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1924 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1925
1926config GPIO_PCI_IDIO_16
1927 tristate "ACCES PCI-IDIO-16 GPIO support"
1928 select REGMAP_MMIO
1929 select GPIO_IDIO_16
1930 help
1931 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1932 generated when any of the inputs change state (low to high or high to
1933 low). Input filter control is not supported by this driver, and the
1934 input filters are deactivated by this driver.
1935
1936config GPIO_PCIE_IDIO_24
1937 tristate "ACCES PCIe-IDIO-24 GPIO support"
1938 select REGMAP_IRQ
1939 select REGMAP_MMIO
1940 select GPIOLIB_IRQCHIP
1941 select GPIO_REGMAP
1942 help
1943 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1944 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1945 when any of the inputs change state (low to high or high to low).
1946 Input filter control is not supported by this driver, and the input
1947 filters are deactivated by this driver.
1948
1949config GPIO_RDC321X
1950 tristate "RDC R-321x GPIO support"
1951 select MFD_CORE
1952 select MFD_RDC321X
1953 help
1954 Support for the RDC R321x SoC GPIOs over southbridge
1955 PCI configuration space.
1956
1957config GPIO_SODAVILLE
1958 bool "Intel Sodaville GPIO support"
1959 depends on X86 && OF
1960 select GPIO_GENERIC
1961 select GENERIC_IRQ_CHIP
1962 help
1963 Say Y here to support Intel Sodaville GPIO.
1964
1965endmenu
1966
1967menu "SPI GPIO expanders"
1968 depends on SPI_MASTER
1969
1970config GPIO_74X164
1971 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1972 help
1973 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1974 shift registers. This driver can be used to provide access
1975 to more GPIO outputs.
1976
1977config GPIO_MAX3191X
1978 tristate "Maxim MAX3191x industrial serializer"
1979 select CRC8
1980 help
1981 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1982 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1983 chip to make 8 digital 24V inputs available via SPI. Supports
1984 CRC checksums to guard against electromagnetic interference,
1985 as well as undervoltage and overtemperature detection.
1986
1987config GPIO_MAX7301
1988 tristate "Maxim MAX7301 GPIO expander"
1989 select GPIO_MAX730X
1990 help
1991 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1992
1993config GPIO_MC33880
1994 tristate "Freescale MC33880 high-side/low-side switch"
1995 help
1996 SPI driver for Freescale MC33880 high-side/low-side switch.
1997 This provides GPIO interface supporting inputs and outputs.
1998
1999config GPIO_PISOSR
2000 tristate "Generic parallel-in/serial-out shift register"
2001 help
2002 GPIO driver for SPI compatible parallel-in/serial-out shift
2003 registers. These are input only devices.
2004
2005config GPIO_XRA1403
2006 tristate "EXAR XRA1403 16-bit GPIO expander"
2007 select REGMAP_SPI
2008 help
2009 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
2010
2011config GPIO_MOXTET
2012 tristate "Turris Mox Moxtet bus GPIO expander"
2013 depends on MOXTET
2014 help
2015 Say yes here if you are building for the Turris Mox router.
2016 This is the driver needed for configuring the GPIOs via the Moxtet
2017 bus. For example the Mox module with SFP cage needs this driver
2018 so that phylink can use corresponding GPIOs.
2019
2020endmenu
2021
2022menu "USB GPIO expanders"
2023 depends on USB
2024
2025config GPIO_VIPERBOARD
2026 tristate "Viperboard GPIO a & b support"
2027 depends on MFD_VIPERBOARD
2028 help
2029 Say yes here to access the GPIO signals of Nano River
2030 Technologies Viperboard. There are two GPIO chips on the
2031 board: gpioa and gpiob.
2032 See viperboard API specification and Nano
2033 River Tech's viperboard.h for detailed meaning
2034 of the module parameters.
2035
2036config GPIO_MPSSE
2037 tristate "FTDI MPSSE GPIO support"
2038 select GPIOLIB_IRQCHIP
2039 help
2040 GPIO driver for FTDI's MPSSE interface. These can do input and
2041 output. Each MPSSE provides 16 IO pins.
2042
2043config GPIO_USBIO
2044 tristate "Intel USBIO GPIO support"
2045 depends on USB_USBIO
2046 default USB_USBIO
2047 help
2048 Select this option to enable GPIO driver for the INTEL
2049 USBIO driver stack.
2050
2051 This driver can also be built as a module. If so, the module
2052 will be called gpio_usbio.
2053
2054endmenu
2055
2056menu "Virtual GPIO drivers"
2057
2058config GPIO_AGGREGATOR
2059 tristate "GPIO Aggregator"
2060 select CONFIGFS_FS
2061 help
2062 Say yes here to enable the GPIO Aggregator, which provides a way to
2063 aggregate existing GPIO lines into a new virtual GPIO chip.
2064 This can serve the following purposes:
2065 - Assign permissions for a collection of GPIO lines to a user,
2066 - Export a collection of GPIO lines to a virtual machine,
2067 - Provide a generic driver for a GPIO-operated device in an
2068 industrial control context, to be operated from userspace using
2069 the GPIO chardev interface.
2070
2071config GPIO_LATCH
2072 tristate "GPIO latch driver"
2073 help
2074 Say yes here to enable a driver for GPIO multiplexers based on latches
2075 connected to other GPIOs.
2076
2077config GPIO_LINE_MUX
2078 tristate "GPIO line mux driver"
2079 depends on OF
2080 select MULTIPLEXER
2081 help
2082 Say Y here to support the GPIO line mux, which can provide virtual
2083 GPIOs backed by a shared real GPIO and a multiplexer in a 1-to-many
2084 fashion.
2085
2086config GPIO_MOCKUP
2087 tristate "GPIO Testing Driver (DEPRECATED)"
2088 select IRQ_SIM
2089 help
2090 This module is DEPRECATED. Please consider using gpio-sim instead.
2091
2092 This enables GPIO Testing driver, which provides a way to test GPIO
2093 subsystem through sysfs (or char device) and debugfs.
2094 User could use it through the script in
2095 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
2096 it.
2097
2098config GPIO_VIRTIO
2099 tristate "VirtIO GPIO support"
2100 depends on VIRTIO
2101 select GPIOLIB_IRQCHIP
2102 help
2103 Say Y here to enable guest support for virtio-based GPIO controllers.
2104
2105 These virtual GPIOs can be routed to real GPIOs or attached to
2106 simulators on the host (like QEMU).
2107
2108config GPIO_SIM
2109 tristate "GPIO Simulator Module"
2110 depends on SYSFS
2111 select IRQ_SIM
2112 select CONFIGFS_FS
2113 help
2114 This enables the GPIO simulator - a configfs-based GPIO testing
2115 driver.
2116
2117config GPIO_SHARED_PROXY
2118 tristate "Proxy driver for non-exclusive GPIOs"
2119 default m
2120 depends on GPIO_SHARED || COMPILE_TEST
2121 select AUXILIARY_BUS
2122 help
2123 This enables the GPIO shared proxy driver - an abstraction layer
2124 for GPIO pins that are shared by multiple devices.
2125
2126endmenu
2127
2128menu "GPIO Debugging utilities"
2129
2130config GPIO_SLOPPY_LOGIC_ANALYZER
2131 tristate "Sloppy GPIO logic analyzer"
2132 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
2133 help
2134 This option enables support for a sloppy logic analyzer using polled
2135 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
2136 this driver. The script will make it easier to use and will also
2137 isolate a CPU for the polling task. Note that this is a last resort
2138 analyzer which can be affected by latencies, non-deterministic code
2139 paths, or NMIs. However, for e.g. remote development, it may be useful
2140 to get a first view and aid further debugging.
2141
2142 If this driver is built as a module it will be called
2143 'gpio-sloppy-logic-analyzer'.
2144
2145config GPIO_VIRTUSER
2146 tristate "GPIO Virtual User Testing Module"
2147 select DEBUG_FS
2148 select CONFIGFS_FS
2149 select IRQ_WORK
2150 help
2151 Say Y here to enable the configurable, configfs-based virtual GPIO
2152 consumer testing driver.
2153
2154 This driver is aimed as a helper in spotting any regressions in
2155 hot-unplug handling in GPIOLIB.
2156
2157endmenu
2158
2159endif