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 ARCH_HAVE_CUSTOM_GPIO_H
7 bool
8 help
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
12 strongly discouraged.
13
14menuconfig GPIOLIB
15 bool "GPIO Support"
16 help
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
20
21 If unsure, say N.
22
23if GPIOLIB
24
25config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
27 range 32 512
28 default 512
29 help
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
32
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
36
37config OF_GPIO
38 def_bool y
39 depends on OF
40 depends on HAS_IOMEM
41
42config GPIO_ACPI
43 def_bool y
44 depends on ACPI
45
46config GPIOLIB_IRQCHIP
47 select IRQ_DOMAIN
48 bool
49
50config DEBUG_GPIO
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
53 help
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
60
61config GPIO_SYSFS
62 bool "/sys/class/gpio/... (sysfs interface)"
63 depends on SYSFS
64 help
65 Say Y here to add the legacy sysfs interface for GPIOs.
66
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead.
70
71config GPIO_CDEV
72 bool
73 prompt "Character device (/dev/gpiochipN) support" if EXPERT
74 default y
75 help
76 Say Y here to add the character device /dev/gpiochipN interface
77 for GPIOs. The character device allows userspace to control GPIOs
78 using ioctl() operations.
79
80 Only say N if you are sure that the GPIO character device is not
81 required.
82
83 If unsure, say Y.
84
85config GPIO_CDEV_V1
86 bool "Support GPIO ABI Version 1"
87 default y
88 depends on GPIO_CDEV
89 help
90 Say Y here to support version 1 of the GPIO CDEV ABI.
91
92 This ABI version is deprecated.
93 Please use the latest ABI for new developments.
94
95 If unsure, say Y.
96
97config GPIO_GENERIC
98 depends on HAS_IOMEM # Only for IOMEM drivers
99 tristate
100
101config GPIO_REGMAP
102 depends on REGMAP
103 tristate
104
105# put drivers in the right section, in alphabetical order
106
107# This symbol is selected by both I2C and SPI expanders
108config GPIO_MAX730X
109 tristate
110
111menu "Memory mapped GPIO drivers"
112 depends on HAS_IOMEM
113
114config GPIO_74XX_MMIO
115 tristate "GPIO driver for 74xx-ICs with MMIO access"
116 depends on OF_GPIO
117 select GPIO_GENERIC
118 help
119 Say yes here to support GPIO functionality for 74xx-compatible ICs
120 with MMIO access. Compatible models include:
121 1 bit: 741G125 (Input), 741G74 (Output)
122 2 bits: 742G125 (Input), 7474 (Output)
123 4 bits: 74125 (Input), 74175 (Output)
124 6 bits: 74365 (Input), 74174 (Output)
125 8 bits: 74244 (Input), 74273 (Output)
126 16 bits: 741624 (Input), 7416374 (Output)
127
128config GPIO_ALTERA
129 tristate "Altera GPIO"
130 depends on OF_GPIO
131 select GPIOLIB_IRQCHIP
132 help
133 Say Y or M here to build support for the Altera PIO device.
134
135 If driver is built as a module it will be called gpio-altera.
136
137config GPIO_AMDPT
138 tristate "AMD Promontory GPIO support"
139 depends on ACPI
140 select GPIO_GENERIC
141 help
142 driver for GPIO functionality on Promontory IOHub
143 Require ACPI ASL code to enumerate as a platform device.
144
145config GPIO_ASPEED
146 tristate "Aspeed GPIO support"
147 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
148 select GPIOLIB_IRQCHIP
149 help
150 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
151
152config GPIO_ASPEED_SGPIO
153 bool "Aspeed SGPIO support"
154 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
155 select GPIO_GENERIC
156 select GPIOLIB_IRQCHIP
157 help
158 Say Y here to support Aspeed AST2500 SGPIO functionality.
159
160config GPIO_ATH79
161 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
162 default y if ATH79
163 depends on ATH79 || COMPILE_TEST
164 select GPIO_GENERIC
165 select GPIOLIB_IRQCHIP
166 help
167 Select this option to enable GPIO driver for
168 Atheros AR71XX/AR724X/AR913X SoC devices.
169
170config GPIO_RASPBERRYPI_EXP
171 tristate "Raspberry Pi 3 GPIO Expander"
172 default RASPBERRYPI_FIRMWARE
173 depends on OF_GPIO
174 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
175 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
176 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
177 help
178 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
179 the firmware mailbox to communicate with VideoCore on BCM283x chips.
180
181config GPIO_BCM_KONA
182 bool "Broadcom Kona GPIO"
183 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
184 help
185 Turn on GPIO support for Broadcom "Kona" chips.
186
187config GPIO_BCM_XGS_IPROC
188 tristate "BRCM XGS iProc GPIO support"
189 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
190 select GPIO_GENERIC
191 select GPIOLIB_IRQCHIP
192 default ARCH_BCM_IPROC
193 help
194 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
195
196config GPIO_BRCMSTB
197 tristate "BRCMSTB GPIO support"
198 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
199 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
200 select GPIO_GENERIC
201 select IRQ_DOMAIN
202 help
203 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
204
205config GPIO_CADENCE
206 tristate "Cadence GPIO support"
207 depends on OF_GPIO
208 select GPIO_GENERIC
209 select GPIOLIB_IRQCHIP
210 help
211 Say yes here to enable support for Cadence GPIO controller.
212
213config GPIO_CLPS711X
214 tristate "CLPS711X GPIO support"
215 depends on ARCH_CLPS711X || COMPILE_TEST
216 select GPIO_GENERIC
217 help
218 Say yes here to support GPIO on CLPS711X SoCs.
219
220config GPIO_DAVINCI
221 bool "TI Davinci/Keystone GPIO support"
222 default y if ARCH_DAVINCI
223 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
224 help
225 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
226
227config GPIO_DWAPB
228 tristate "Synopsys DesignWare APB GPIO driver"
229 select GPIO_GENERIC
230 select GPIOLIB_IRQCHIP
231 help
232 Say Y or M here to build support for the Synopsys DesignWare APB
233 GPIO block.
234
235config GPIO_EIC_SPRD
236 tristate "Spreadtrum EIC support"
237 depends on ARCH_SPRD || COMPILE_TEST
238 depends on OF_GPIO
239 select GPIOLIB_IRQCHIP
240 help
241 Say yes here to support Spreadtrum EIC device.
242
243config GPIO_EM
244 tristate "Emma Mobile GPIO"
245 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
246 help
247 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
248
249config GPIO_EP93XX
250 def_bool y
251 depends on ARCH_EP93XX
252 select GPIO_GENERIC
253 select GPIOLIB_IRQCHIP
254
255config GPIO_EXAR
256 tristate "Support for GPIO pins on XR17V352/354/358"
257 depends on SERIAL_8250_EXAR
258 help
259 Selecting this option will enable handling of GPIO pins present
260 on Exar XR17V352/354/358 chips.
261
262config GPIO_GE_FPGA
263 bool "GE FPGA based GPIO"
264 depends on GE_FPGA
265 select GPIO_GENERIC
266 help
267 Support for common GPIO functionality provided on some GE Single Board
268 Computers.
269
270 This driver provides basic support (configure as input or output, read
271 and write pin state) for GPIO implemented in a number of GE single
272 board computers.
273
274config GPIO_FTGPIO010
275 bool "Faraday FTGPIO010 GPIO"
276 depends on OF_GPIO
277 select GPIO_GENERIC
278 select GPIOLIB_IRQCHIP
279 default (ARCH_GEMINI || ARCH_MOXART)
280 help
281 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
282 Cortina systems Gemini platforms, Moxa ART and others.
283
284config GPIO_GENERIC_PLATFORM
285 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
286 select GPIO_GENERIC
287 help
288 Say yes here to support basic platform_device memory-mapped GPIO controllers.
289
290config GPIO_GRGPIO
291 tristate "Aeroflex Gaisler GRGPIO support"
292 depends on OF_GPIO
293 select GPIO_GENERIC
294 select IRQ_DOMAIN
295 help
296 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
297 VHDL IP core library.
298
299config GPIO_HLWD
300 tristate "Nintendo Wii (Hollywood) GPIO"
301 depends on OF_GPIO
302 select GPIO_GENERIC
303 select GPIOLIB_IRQCHIP
304 help
305 Select this to support the GPIO controller of the Nintendo Wii.
306
307 If unsure, say N.
308
309config GPIO_ICH
310 tristate "Intel ICH GPIO"
311 depends on PCI && X86
312 select MFD_CORE
313 select LPC_ICH
314 help
315 Say yes here to support the GPIO functionality of a number of Intel
316 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
317 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
318 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
319
320 If unsure, say N.
321
322config GPIO_IOP
323 tristate "Intel IOP GPIO"
324 depends on ARCH_IOP32X || COMPILE_TEST
325 select GPIO_GENERIC
326 help
327 Say yes here to support the GPIO functionality of a number of Intel
328 IOP32X or IOP33X.
329
330 If unsure, say N.
331
332config GPIO_IXP4XX
333 bool "Intel IXP4xx GPIO"
334 depends on ARM # For <asm/mach-types.h>
335 depends on ARCH_IXP4XX
336 select GPIO_GENERIC
337 select GPIOLIB_IRQCHIP
338 select IRQ_DOMAIN_HIERARCHY
339 help
340 Say yes here to support the GPIO functionality of a number of Intel
341 IXP4xx series of chips.
342
343 If unsure, say N.
344config GPIO_LOGICVC
345 tristate "Xylon LogiCVC GPIO support"
346 depends on MFD_SYSCON && OF
347 help
348 Say yes here to support GPIO functionality of the Xylon LogiCVC
349 programmable logic block.
350
351config GPIO_LOONGSON
352 bool "Loongson-2/3 GPIO support"
353 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
354 help
355 driver for GPIO functionality on Loongson-2F/3A/3B processors.
356
357config GPIO_LPC18XX
358 tristate "NXP LPC18XX/43XX GPIO support"
359 default y if ARCH_LPC18XX
360 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
361 select IRQ_DOMAIN_HIERARCHY
362 help
363 Select this option to enable GPIO driver for
364 NXP LPC18XX/43XX devices.
365
366config GPIO_LPC32XX
367 tristate "NXP LPC32XX GPIO support"
368 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
369 help
370 Select this option to enable GPIO driver for
371 NXP LPC32XX devices.
372
373config GPIO_MB86S7X
374 tristate "GPIO support for Fujitsu MB86S7x Platforms"
375 help
376 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
377
378config GPIO_MENZ127
379 tristate "MEN 16Z127 GPIO support"
380 depends on MCB
381 select GPIO_GENERIC
382 help
383 Say yes here to support the MEN 16Z127 GPIO Controller
384
385config GPIO_MM_LANTIQ
386 bool "Lantiq Memory mapped GPIOs"
387 depends on LANTIQ && SOC_XWAY
388 help
389 This enables support for memory mapped GPIOs on the External Bus Unit
390 (EBU) found on Lantiq SoCs. The gpios are output only as they are
391 created by attaching a 16bit latch to the bus.
392
393config GPIO_MPC5200
394 def_bool y
395 depends on PPC_MPC52xx
396
397config GPIO_MPC8XXX
398 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
399 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
400 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
401 COMPILE_TEST
402 select GPIO_GENERIC
403 select IRQ_DOMAIN
404 help
405 Say Y here if you're going to use hardware that connects to the
406 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
407
408config GPIO_MT7621
409 bool "Mediatek MT7621 GPIO Support"
410 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
411 depends on OF_GPIO
412 select GPIO_GENERIC
413 select GPIOLIB_IRQCHIP
414 help
415 Say yes here to support the Mediatek MT7621 SoC GPIO device
416
417config GPIO_MVEBU
418 def_bool y
419 depends on PLAT_ORION || ARCH_MVEBU
420 depends on OF_GPIO
421 select GENERIC_IRQ_CHIP
422 select REGMAP_MMIO
423
424config GPIO_MXC
425 tristate "i.MX GPIO support"
426 depends on ARCH_MXC || COMPILE_TEST
427 select GPIO_GENERIC
428 select GENERIC_IRQ_CHIP
429
430config GPIO_MXS
431 def_bool y
432 depends on ARCH_MXS || COMPILE_TEST
433 select GPIO_GENERIC
434 select GENERIC_IRQ_CHIP
435
436config GPIO_OCTEON
437 tristate "Cavium OCTEON GPIO"
438 depends on CAVIUM_OCTEON_SOC
439 default y
440 help
441 Say yes here to support the on-chip GPIO lines on the OCTEON
442 family of SOCs.
443
444config GPIO_OMAP
445 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
446 default y if ARCH_OMAP
447 depends on ARM
448 select GENERIC_IRQ_CHIP
449 select GPIOLIB_IRQCHIP
450 help
451 Say yes here to enable GPIO support for TI OMAP SoCs.
452
453config GPIO_PL061
454 tristate "PrimeCell PL061 GPIO support"
455 depends on ARM_AMBA
456 select IRQ_DOMAIN
457 select GPIOLIB_IRQCHIP
458 help
459 Say yes here to support the PrimeCell PL061 GPIO device
460
461config GPIO_PMIC_EIC_SPRD
462 tristate "Spreadtrum PMIC EIC support"
463 depends on MFD_SC27XX_PMIC || COMPILE_TEST
464 depends on OF_GPIO
465 select GPIOLIB_IRQCHIP
466 help
467 Say yes here to support Spreadtrum PMIC EIC device.
468
469config GPIO_PXA
470 bool "PXA GPIO support"
471 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
472 help
473 Say yes here to support the PXA GPIO device
474
475config GPIO_RCAR
476 tristate "Renesas R-Car GPIO"
477 depends on ARCH_RENESAS || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
479 help
480 Say yes here to support GPIO on Renesas R-Car SoCs.
481
482config GPIO_RDA
483 bool "RDA Micro GPIO controller support"
484 depends on ARCH_RDA || COMPILE_TEST
485 depends on OF_GPIO
486 select GPIO_GENERIC
487 select GPIOLIB_IRQCHIP
488 help
489 Say Y here to support RDA Micro GPIO controller.
490
491config GPIO_REG
492 bool
493 help
494 A 32-bit single register GPIO fixed in/out implementation. This
495 can be used to represent any register as a set of GPIO signals.
496
497config GPIO_SAMA5D2_PIOBU
498 tristate "SAMA5D2 PIOBU GPIO support"
499 depends on MFD_SYSCON
500 depends on OF_GPIO
501 select GPIO_SYSCON
502 help
503 Say yes here to use the PIOBU pins as GPIOs.
504
505 PIOBU pins on the SAMA5D2 can be used as GPIOs.
506 The difference from regular GPIOs is that they
507 maintain their value during backup/self-refresh.
508
509config GPIO_SIFIVE
510 bool "SiFive GPIO support"
511 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
512 select GPIO_GENERIC
513 select GPIOLIB_IRQCHIP
514 select REGMAP_MMIO
515 help
516 Say yes here to support the GPIO device on SiFive SoCs.
517
518config GPIO_SIOX
519 tristate "SIOX GPIO support"
520 depends on SIOX
521 select GPIOLIB_IRQCHIP
522 help
523 Say yes here to support SIOX I/O devices. These are units connected
524 via a SIOX bus and have a number of fixed-direction I/O lines.
525
526config GPIO_SNPS_CREG
527 bool "Synopsys GPIO via CREG (Control REGisters) driver"
528 depends on ARC || COMPILE_TEST
529 depends on OF_GPIO
530 help
531 This driver supports GPIOs via CREG on various Synopsys SoCs.
532 This is a single-register MMIO GPIO driver for complex cases
533 where only several fields in register belong to GPIO lines and
534 each GPIO line owns a field with different length and on/off value.
535
536config GPIO_SPEAR_SPICS
537 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
538 depends on PLAT_SPEAR
539 select GENERIC_IRQ_CHIP
540 help
541 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
542
543config GPIO_SPRD
544 tristate "Spreadtrum GPIO support"
545 depends on ARCH_SPRD || COMPILE_TEST
546 depends on OF_GPIO
547 select GPIOLIB_IRQCHIP
548 help
549 Say yes here to support Spreadtrum GPIO device.
550
551config GPIO_STA2X11
552 bool "STA2x11/ConneXt GPIO support"
553 depends on MFD_STA2X11
554 select GENERIC_IRQ_CHIP
555 help
556 Say yes here to support the STA2x11/ConneXt GPIO device.
557 The GPIO module has 128 GPIO pins with alternate functions.
558
559config GPIO_STP_XWAY
560 bool "XWAY STP GPIOs"
561 depends on SOC_XWAY || COMPILE_TEST
562 depends on OF_GPIO
563 help
564 This enables support for the Serial To Parallel (STP) unit found on
565 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
566 that can be up to 24 bit. This peripheral is aimed at driving leds.
567 Some of the gpios/leds can be auto updated by the soc with dsl and
568 phy status.
569
570config GPIO_SYSCON
571 tristate "GPIO based on SYSCON"
572 depends on MFD_SYSCON && OF
573 help
574 Say yes here to support GPIO functionality though SYSCON driver.
575
576config GPIO_TB10X
577 bool
578 select GPIO_GENERIC
579 select GENERIC_IRQ_CHIP
580 select OF_GPIO
581
582config GPIO_TEGRA
583 bool "NVIDIA Tegra GPIO support"
584 default ARCH_TEGRA
585 depends on ARCH_TEGRA || COMPILE_TEST
586 depends on OF_GPIO
587 help
588 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
589
590config GPIO_TEGRA186
591 tristate "NVIDIA Tegra186 GPIO support"
592 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
593 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
594 depends on OF_GPIO
595 select GPIOLIB_IRQCHIP
596 select IRQ_DOMAIN_HIERARCHY
597 help
598 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
599
600config GPIO_TS4800
601 tristate "TS-4800 DIO blocks and compatibles"
602 depends on OF_GPIO
603 depends on SOC_IMX51 || COMPILE_TEST
604 select GPIO_GENERIC
605 help
606 This driver support TS-4800 FPGA GPIO controllers.
607
608config GPIO_THUNDERX
609 tristate "Cavium ThunderX/OCTEON-TX GPIO"
610 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
611 depends on PCI_MSI
612 select GPIOLIB_IRQCHIP
613 select IRQ_DOMAIN_HIERARCHY
614 select IRQ_FASTEOI_HIERARCHY_HANDLERS
615 help
616 Say yes here to support the on-chip GPIO lines on the ThunderX
617 and OCTEON-TX families of SoCs.
618
619config GPIO_UNIPHIER
620 tristate "UniPhier GPIO support"
621 depends on ARCH_UNIPHIER || COMPILE_TEST
622 depends on OF_GPIO
623 select IRQ_DOMAIN_HIERARCHY
624 help
625 Say yes here to support UniPhier GPIOs.
626
627config GPIO_VF610
628 def_bool y
629 depends on ARCH_MXC && SOC_VF610
630 select GPIOLIB_IRQCHIP
631 help
632 Say yes here to support Vybrid vf610 GPIOs.
633
634config GPIO_VR41XX
635 tristate "NEC VR4100 series General-purpose I/O Uint support"
636 depends on CPU_VR41XX
637 help
638 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
639
640config GPIO_VX855
641 tristate "VIA VX855/VX875 GPIO"
642 depends on (X86 || COMPILE_TEST) && PCI
643 select MFD_CORE
644 select MFD_VX855
645 help
646 Support access to the VX855/VX875 GPIO lines through the gpio library.
647
648 This driver provides common support for accessing the device,
649 additional drivers must be enabled in order to use the
650 functionality of the device.
651
652config GPIO_WCD934X
653 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
654 depends on MFD_WCD934X && OF_GPIO
655 help
656 This driver is to supprot GPIO block found on the Qualcomm Technologies
657 Inc WCD9340/WCD9341 Audio Codec.
658
659config GPIO_XGENE
660 bool "APM X-Gene GPIO controller support"
661 depends on ARM64 && OF_GPIO
662 help
663 This driver is to support the GPIO block within the APM X-Gene SoC
664 platform's generic flash controller. The GPIO pins are muxed with
665 the generic flash controller's address and data pins. Say yes
666 here to enable the GFC GPIO functionality.
667
668config GPIO_XGENE_SB
669 tristate "APM X-Gene GPIO standby controller support"
670 depends on (ARCH_XGENE || COMPILE_TEST)
671 select GPIO_GENERIC
672 select GPIOLIB_IRQCHIP
673 select IRQ_DOMAIN_HIERARCHY
674 help
675 This driver supports the GPIO block within the APM X-Gene
676 Standby Domain. Say yes here to enable the GPIO functionality.
677
678config GPIO_XILINX
679 tristate "Xilinx GPIO support"
680 help
681 Say yes here to support the Xilinx FPGA GPIO device
682
683config GPIO_XLP
684 tristate "Netlogic XLP GPIO support"
685 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
686 select GPIOLIB_IRQCHIP
687 help
688 This driver provides support for GPIO interface on Netlogic XLP MIPS64
689 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
690 XLP9XX and XLP5XX. The same GPIO controller block is also present in
691 Cavium's ThunderX2 CN99XX SoCs.
692
693 If unsure, say N.
694
695config GPIO_XTENSA
696 bool "Xtensa GPIO32 support"
697 depends on XTENSA
698 depends on HAVE_XTENSA_GPIO32
699 depends on !SMP
700 help
701 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
702 and EXPSTATE (output) ports
703
704config GPIO_ZEVIO
705 bool "LSI ZEVIO SoC memory mapped GPIOs"
706 depends on ARM && OF_GPIO
707 help
708 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
709
710config GPIO_ZYNQ
711 tristate "Xilinx Zynq GPIO support"
712 depends on ARCH_ZYNQ || ARCH_ZYNQMP
713 select GPIOLIB_IRQCHIP
714 help
715 Say yes here to support Xilinx Zynq GPIO controller.
716
717config GPIO_ZX
718 bool "ZTE ZX GPIO support"
719 depends on ARCH_ZX || COMPILE_TEST
720 select GPIOLIB_IRQCHIP
721 help
722 Say yes here to support the GPIO device on ZTE ZX SoCs.
723
724config GPIO_LOONGSON1
725 tristate "Loongson1 GPIO support"
726 depends on MACH_LOONGSON32
727 select GPIO_GENERIC
728 help
729 Say Y or M here to support GPIO on Loongson1 SoCs.
730
731config GPIO_AMD_FCH
732 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
733 help
734 This option enables driver for GPIO on AMDs Fusion Controller Hub,
735 as found on G-series SOCs (eg. GX-412TC)
736
737 Note: This driver doesn't registers itself automatically, as it
738 needs to be provided with platform specific configuration.
739 (See eg. CONFIG_PCENGINES_APU2.)
740endmenu
741
742menu "Port-mapped I/O GPIO drivers"
743 depends on X86 # Unconditional I/O space access
744
745config GPIO_104_DIO_48E
746 tristate "ACCES 104-DIO-48E GPIO support"
747 depends on PC104
748 select ISA_BUS_API
749 select GPIOLIB_IRQCHIP
750 help
751 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
752 104-DIO-24E). The base port addresses for the devices may be
753 configured via the base module parameter. The interrupt line numbers
754 for the devices may be configured via the irq module parameter.
755
756config GPIO_104_IDIO_16
757 tristate "ACCES 104-IDIO-16 GPIO support"
758 depends on PC104
759 select ISA_BUS_API
760 select GPIOLIB_IRQCHIP
761 help
762 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
763 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
764 base port addresses for the devices may be configured via the base
765 module parameter. The interrupt line numbers for the devices may be
766 configured via the irq module parameter.
767
768config GPIO_104_IDI_48
769 tristate "ACCES 104-IDI-48 GPIO support"
770 depends on PC104
771 select ISA_BUS_API
772 select GPIOLIB_IRQCHIP
773 help
774 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
775 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
776 the devices may be configured via the base module parameter. The
777 interrupt line numbers for the devices may be configured via the irq
778 module parameter.
779
780config GPIO_F7188X
781 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
782 help
783 This option enables support for GPIOs found on Fintek Super-I/O
784 chips F71869, F71869A, F71882FG, F71889F and F81866.
785
786 To compile this driver as a module, choose M here: the module will
787 be called f7188x-gpio.
788
789config GPIO_GPIO_MM
790 tristate "Diamond Systems GPIO-MM GPIO support"
791 depends on PC104
792 select ISA_BUS_API
793 help
794 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
795
796 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
797 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
798 support for these 48 channels of digital I/O.
799
800 The base port addresses for the devices may be configured via the base
801 array module parameter.
802
803config GPIO_IT87
804 tristate "IT87xx GPIO support"
805 help
806 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
807
808 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
809 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
810 well.
811
812 To compile this driver as a module, choose M here: the module will
813 be called gpio_it87
814
815config GPIO_SCH
816 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
817 depends on (X86 || COMPILE_TEST) && PCI
818 select MFD_CORE
819 select LPC_SCH
820 help
821 Say yes here to support GPIO interface on Intel Poulsbo SCH,
822 Intel Tunnel Creek processor, Intel Centerton processor or
823 Intel Quark X1000 SoC.
824
825 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
826 powered by the core power rail and are turned off during sleep
827 modes (S3 and higher). The remaining four GPIOs are powered by
828 the Intel SCH suspend power supply. These GPIOs remain
829 active during S3. The suspend powered GPIOs can be used to wake the
830 system from the Suspend-to-RAM state.
831
832 The Intel Tunnel Creek processor has 5 GPIOs powered by the
833 core power rail and 9 from suspend power supply.
834
835 The Intel Centerton processor has a total of 30 GPIO pins.
836 Twenty-one are powered by the core power rail and 9 from the
837 suspend power supply.
838
839 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
840 power well and 6 from the suspend power well.
841
842config GPIO_SCH311X
843 tristate "SMSC SCH311x SuperI/O GPIO"
844 help
845 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
846 SCH3116 "Super I/O" chipsets.
847
848 To compile this driver as a module, choose M here: the module will
849 be called gpio-sch311x.
850
851config GPIO_TS5500
852 tristate "TS-5500 DIO blocks and compatibles"
853 depends on TS5500 || COMPILE_TEST
854 help
855 This driver supports Digital I/O exposed by pin blocks found on some
856 Technologic Systems platforms. It includes, but is not limited to, 3
857 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
858 LCD port.
859
860config GPIO_WINBOND
861 tristate "Winbond Super I/O GPIO support"
862 select ISA_BUS_API
863 help
864 This option enables support for GPIOs found on Winbond Super I/O
865 chips.
866 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
867 supported.
868
869 You will need to provide a module parameter "gpios", or a
870 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
871 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
872
873 To compile this driver as a module, choose M here: the module will
874 be called gpio-winbond.
875
876config GPIO_WS16C48
877 tristate "WinSystems WS16C48 GPIO support"
878 select ISA_BUS_API
879 select GPIOLIB_IRQCHIP
880 help
881 Enables GPIO support for the WinSystems WS16C48. The base port
882 addresses for the devices may be configured via the base module
883 parameter. The interrupt line numbers for the devices may be
884 configured via the irq module parameter.
885
886endmenu
887
888menu "I2C GPIO expanders"
889 depends on I2C
890
891config GPIO_ADP5588
892 tristate "ADP5588 I2C GPIO expander"
893 help
894 This option enables support for 18 GPIOs found
895 on Analog Devices ADP5588 GPIO Expanders.
896
897config GPIO_ADP5588_IRQ
898 bool "Interrupt controller support for ADP5588"
899 depends on GPIO_ADP5588=y
900 select GPIOLIB_IRQCHIP
901 help
902 Say yes here to enable the adp5588 to be used as an interrupt
903 controller. It requires the driver to be built in the kernel.
904
905config GPIO_ADNP
906 tristate "Avionic Design N-bit GPIO expander"
907 depends on OF_GPIO
908 select GPIOLIB_IRQCHIP
909 help
910 This option enables support for N GPIOs found on Avionic Design
911 I2C GPIO expanders. The register space will be extended by powers
912 of two, so the controller will need to accommodate for that. For
913 example: if a controller provides 48 pins, 6 registers will be
914 enough to represent all pins, but the driver will assume a
915 register layout for 64 pins (8 registers).
916
917config GPIO_GW_PLD
918 tristate "Gateworks PLD GPIO Expander"
919 depends on OF_GPIO
920 help
921 Say yes here to provide access to the Gateworks I2C PLD GPIO
922 Expander. This is used at least on the Cambria GW2358-4.
923
924config GPIO_MAX7300
925 tristate "Maxim MAX7300 GPIO expander"
926 select GPIO_MAX730X
927 help
928 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
929
930config GPIO_MAX732X
931 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
932 help
933 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
934 Port Expanders. Each IO port on these chips has a fixed role of
935 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
936 Input and Output (designed by 'P'). The combinations are listed
937 below:
938
939 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
940 max7322 (4I4O), max7323 (4P4O)
941
942 16 bits: max7324 (8I8O), max7325 (8P8O),
943 max7326 (4I12O), max7327 (4P12O)
944
945 Board setup code must specify the model to use, and the start
946 number for these GPIOs.
947
948config GPIO_MAX732X_IRQ
949 bool "Interrupt controller support for MAX732x"
950 depends on GPIO_MAX732X=y
951 select GPIOLIB_IRQCHIP
952 help
953 Say yes here to enable the max732x to be used as an interrupt
954 controller. It requires the driver to be built in the kernel.
955
956config GPIO_MC9S08DZ60
957 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
958 depends on I2C=y && MACH_MX35_3DS
959 help
960 Select this to enable the MC9S08DZ60 GPIO driver
961
962config GPIO_PCA953X
963 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
964 select REGMAP_I2C
965 help
966 Say yes here to provide access to several register-oriented
967 SMBus I/O expanders, made mostly by NXP or TI. Compatible
968 models include:
969
970 4 bits: pca9536, pca9537
971
972 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
973 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
974
975 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
976 tca6416
977
978 24 bits: tca6424
979
980 40 bits: pca9505, pca9698
981
982config GPIO_PCA953X_IRQ
983 bool "Interrupt controller support for PCA953x"
984 depends on GPIO_PCA953X
985 select GPIOLIB_IRQCHIP
986 help
987 Say yes here to enable the pca953x to be used as an interrupt
988 controller. It requires the driver to be built in the kernel.
989
990config GPIO_PCA9570
991 tristate "PCA9570 4-Bit I2C GPO expander"
992 help
993 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
994
995 To compile this driver as a module, choose M here: the module will
996 be called gpio-pca9570.
997
998config GPIO_PCF857X
999 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1000 select GPIOLIB_IRQCHIP
1001 select IRQ_DOMAIN
1002 help
1003 Say yes here to provide access to most "quasi-bidirectional" I2C
1004 GPIO expanders used for additional digital outputs or inputs.
1005 Most of these parts are from NXP, though TI is a second source for
1006 some of them. Compatible models include:
1007
1008 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1009 pca9670, pca9672, pca9674, pca9674a,
1010 max7328, max7329
1011
1012 16 bits: pcf8575, pcf8575c, pca8575,
1013 pca9671, pca9673, pca9675
1014
1015 Your board setup code will need to declare the expanders in
1016 use, and assign numbers to the GPIOs they expose. Those GPIOs
1017 can then be used from drivers and other kernel code, just like
1018 other GPIOs, but only accessible from task contexts.
1019
1020 This driver provides an in-kernel interface to those GPIOs using
1021 platform-neutral GPIO calls.
1022
1023config GPIO_TPIC2810
1024 tristate "TPIC2810 8-Bit I2C GPO expander"
1025 help
1026 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1027
1028 To compile this driver as a module, choose M here: the module will
1029 be called gpio-tpic2810.
1030
1031config GPIO_TS4900
1032 tristate "Technologic Systems FPGA I2C GPIO"
1033 depends on SOC_IMX6 || COMPILE_TEST
1034 select REGMAP_I2C
1035 help
1036 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1037 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1038
1039endmenu
1040
1041menu "MFD GPIO expanders"
1042
1043config GPIO_ADP5520
1044 tristate "GPIO Support for ADP5520 PMIC"
1045 depends on PMIC_ADP5520
1046 help
1047 This option enables support for on-chip GPIO found
1048 on Analog Devices ADP5520 PMICs.
1049
1050config GPIO_ALTERA_A10SR
1051 tristate "Altera Arria10 System Resource GPIO"
1052 depends on MFD_ALTERA_A10SR
1053 help
1054 Driver for Arria10 Development Kit GPIO expansion which
1055 includes reads of pushbuttons and DIP switches as well
1056 as writes to LEDs.
1057
1058config GPIO_ARIZONA
1059 tristate "Wolfson Microelectronics Arizona class devices"
1060 depends on MFD_ARIZONA
1061 help
1062 Support for GPIOs on Wolfson Arizona class devices.
1063
1064config GPIO_BD70528
1065 tristate "ROHM BD70528 GPIO support"
1066 depends on MFD_ROHM_BD70528
1067 help
1068 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1069 available on the ROHM PMIC in total. The GPIOs can also
1070 generate interrupts.
1071
1072 This driver can also be built as a module. If so, the module
1073 will be called gpio-bd70528.
1074
1075config GPIO_BD71828
1076 tristate "ROHM BD71828 GPIO support"
1077 depends on MFD_ROHM_BD71828
1078 help
1079 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1080 available on the ROHM PMIC in total. The GPIOs are limited to
1081 outputs only and pins must be configured to GPIO outputs by
1082 OTP. Enable this only if you want to use these pins as outputs.
1083
1084 This driver can also be built as a module. If so, the module
1085 will be called gpio-bd71828.
1086
1087config GPIO_BD9571MWV
1088 tristate "ROHM BD9571 GPIO support"
1089 depends on MFD_BD9571MWV
1090 help
1091 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1092 available on the ROHM PMIC in total, both of which can also
1093 generate interrupts.
1094
1095 This driver can also be built as a module. If so, the module
1096 will be called gpio-bd9571mwv.
1097
1098config GPIO_CRYSTAL_COVE
1099 tristate "GPIO support for Crystal Cove PMIC"
1100 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1101 select GPIOLIB_IRQCHIP
1102 help
1103 Support for GPIO pins on Crystal Cove PMIC.
1104
1105 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1106 inside.
1107
1108 This driver can also be built as a module. If so, the module will be
1109 called gpio-crystalcove.
1110
1111config GPIO_CS5535
1112 tristate "AMD CS5535/CS5536 GPIO support"
1113 depends on X86 || MIPS || COMPILE_TEST
1114 depends on MFD_CS5535
1115 help
1116 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1117 can be used for quite a number of things. The CS5535/6 is found on
1118 AMD Geode and Lemote Yeeloong devices.
1119
1120 If unsure, say N.
1121
1122config GPIO_DA9052
1123 tristate "Dialog DA9052 GPIO"
1124 depends on PMIC_DA9052
1125 help
1126 Say yes here to enable the GPIO driver for the DA9052 chip.
1127
1128config GPIO_DA9055
1129 tristate "Dialog Semiconductor DA9055 GPIO"
1130 depends on MFD_DA9055
1131 help
1132 Say yes here to enable the GPIO driver for the DA9055 chip.
1133
1134 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1135 be controller by this driver.
1136
1137 If driver is built as a module it will be called gpio-da9055.
1138
1139config GPIO_DLN2
1140 tristate "Diolan DLN2 GPIO support"
1141 depends on MFD_DLN2
1142 select GPIOLIB_IRQCHIP
1143
1144 help
1145 Select this option to enable GPIO driver for the Diolan DLN2
1146 board.
1147
1148 This driver can also be built as a module. If so, the module
1149 will be called gpio-dln2.
1150
1151config HTC_EGPIO
1152 bool "HTC EGPIO support"
1153 depends on ARM
1154 help
1155 This driver supports the CPLD egpio chip present on
1156 several HTC phones. It provides basic support for input
1157 pins, output pins, and irqs.
1158
1159config GPIO_JANZ_TTL
1160 tristate "Janz VMOD-TTL Digital IO Module"
1161 depends on MFD_JANZ_CMODIO
1162 help
1163 This enables support for the Janz VMOD-TTL Digital IO module.
1164 This driver provides support for driving the pins in output
1165 mode only. Input mode is not supported.
1166
1167config GPIO_KEMPLD
1168 tristate "Kontron ETX / COMexpress GPIO"
1169 depends on MFD_KEMPLD
1170 help
1171 This enables support for the PLD GPIO interface on some Kontron ETX
1172 and COMexpress (ETXexpress) modules.
1173
1174 This driver can also be built as a module. If so, the module will be
1175 called gpio-kempld.
1176
1177config GPIO_LP3943
1178 tristate "TI/National Semiconductor LP3943 GPIO expander"
1179 depends on MFD_LP3943
1180 help
1181 GPIO driver for LP3943 MFD.
1182 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1183 Open drain outputs are required for this usage.
1184
1185config GPIO_LP873X
1186 tristate "TI LP873X GPO"
1187 depends on MFD_TI_LP873X
1188 help
1189 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1190 on LP873X PMICs.
1191
1192 This driver can also be built as a module. If so, the module will be
1193 called gpio-lp873x.
1194
1195config GPIO_LP87565
1196 tristate "TI LP87565 GPIO"
1197 depends on MFD_TI_LP87565
1198 help
1199 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1200 on LP87565 PMICs.
1201
1202 This driver can also be built as a module. If so, the module will be
1203 called gpio-lp87565.
1204
1205config GPIO_MADERA
1206 tristate "Cirrus Logic Madera class codecs"
1207 depends on PINCTRL_MADERA
1208 help
1209 Support for GPIOs on Cirrus Logic Madera class codecs.
1210
1211config GPIO_MAX77620
1212 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1213 depends on MFD_MAX77620
1214 select GPIOLIB_IRQCHIP
1215 help
1216 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1217 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1218 driver also provides interrupt support for each of the gpios.
1219 Say yes here to enable the max77620 to be used as gpio controller.
1220
1221config GPIO_MAX77650
1222 tristate "Maxim MAX77650/77651 GPIO support"
1223 depends on MFD_MAX77650
1224 help
1225 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1226 These chips have a single pin that can be configured as GPIO.
1227
1228config GPIO_MSIC
1229 bool "Intel MSIC mixed signal gpio support"
1230 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1231 help
1232 Enable support for GPIO on intel MSIC controllers found in
1233 intel MID devices
1234
1235config GPIO_PALMAS
1236 bool "TI PALMAS series PMICs GPIO"
1237 depends on MFD_PALMAS
1238 help
1239 Select this option to enable GPIO driver for the TI PALMAS
1240 series chip family.
1241
1242config GPIO_RC5T583
1243 bool "RICOH RC5T583 GPIO"
1244 depends on MFD_RC5T583
1245 help
1246 Select this option to enable GPIO driver for the Ricoh RC5T583
1247 chip family.
1248 This driver provides the support for driving/reading the gpio pins
1249 of RC5T583 device through standard gpio library.
1250
1251config GPIO_SL28CPLD
1252 tristate "Kontron sl28cpld GPIO support"
1253 depends on MFD_SL28CPLD || COMPILE_TEST
1254 select GPIO_REGMAP
1255 select GPIOLIB_IRQCHIP
1256 select REGMAP_IRQ
1257 help
1258 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1259
1260 This driver can also be built as a module. If so, the module will be
1261 called gpio-sl28cpld.
1262
1263config GPIO_STMPE
1264 bool "STMPE GPIOs"
1265 depends on MFD_STMPE
1266 depends on OF_GPIO
1267 select GPIOLIB_IRQCHIP
1268 help
1269 This enables support for the GPIOs found on the STMPE I/O
1270 Expanders.
1271
1272config GPIO_TC3589X
1273 bool "TC3589X GPIOs"
1274 depends on MFD_TC3589X
1275 depends on OF_GPIO
1276 select GPIOLIB_IRQCHIP
1277 help
1278 This enables support for the GPIOs found on the TC3589X
1279 I/O Expander.
1280
1281config GPIO_TIMBERDALE
1282 bool "Support for timberdale GPIO IP"
1283 depends on MFD_TIMBERDALE
1284 help
1285 Add support for the GPIO IP in the timberdale FPGA.
1286
1287config GPIO_TPS65086
1288 tristate "TI TPS65086 GPO"
1289 depends on MFD_TPS65086
1290 help
1291 This driver supports the GPO on TI TPS65086x PMICs.
1292
1293config GPIO_TPS65218
1294 tristate "TPS65218 GPIO"
1295 depends on MFD_TPS65218
1296 help
1297 Select this option to enable GPIO driver for the TPS65218
1298 chip family.
1299
1300config GPIO_TPS6586X
1301 bool "TPS6586X GPIO"
1302 depends on MFD_TPS6586X
1303 help
1304 Select this option to enable GPIO driver for the TPS6586X
1305 chip family.
1306
1307config GPIO_TPS65910
1308 bool "TPS65910 GPIO"
1309 depends on MFD_TPS65910
1310 help
1311 Select this option to enable GPIO driver for the TPS65910
1312 chip family.
1313
1314config GPIO_TPS65912
1315 tristate "TI TPS65912 GPIO"
1316 depends on MFD_TPS65912
1317 help
1318 This driver supports TPS65912 gpio chip
1319
1320config GPIO_TPS68470
1321 bool "TPS68470 GPIO"
1322 depends on MFD_TPS68470
1323 help
1324 Select this option to enable GPIO driver for the TPS68470
1325 chip family.
1326 There are 7 GPIOs and few sensor related GPIOs supported
1327 by the TPS68470. While the 7 GPIOs can be configured as
1328 input or output as appropriate, the sensor related GPIOs
1329 are "output only" GPIOs.
1330
1331 This driver config is bool, as the GPIO functionality
1332 of the TPS68470 must be available before dependent
1333 drivers are loaded.
1334
1335config GPIO_TQMX86
1336 tristate "TQ-Systems QTMX86 GPIO"
1337 depends on MFD_TQMX86 || COMPILE_TEST
1338 select GPIOLIB_IRQCHIP
1339 help
1340 This driver supports GPIO on the TQMX86 IO controller.
1341
1342config GPIO_TWL4030
1343 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1344 depends on TWL4030_CORE
1345 help
1346 Say yes here to access the GPIO signals of various multi-function
1347 power management chips from Texas Instruments.
1348
1349config GPIO_TWL6040
1350 tristate "TWL6040 GPO"
1351 depends on TWL6040_CORE
1352 help
1353 Say yes here to access the GPO signals of twl6040
1354 audio chip from Texas Instruments.
1355
1356config GPIO_UCB1400
1357 tristate "Philips UCB1400 GPIO"
1358 depends on UCB1400_CORE
1359 help
1360 This enables support for the Philips UCB1400 GPIO pins.
1361 The UCB1400 is an AC97 audio codec.
1362
1363config GPIO_WHISKEY_COVE
1364 tristate "GPIO support for Whiskey Cove PMIC"
1365 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1366 select GPIOLIB_IRQCHIP
1367 help
1368 Support for GPIO pins on Whiskey Cove PMIC.
1369
1370 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1371 inside.
1372
1373 This driver can also be built as a module. If so, the module will be
1374 called gpio-wcove.
1375
1376config GPIO_WM831X
1377 tristate "WM831x GPIOs"
1378 depends on MFD_WM831X
1379 help
1380 Say yes here to access the GPIO signals of WM831x power management
1381 chips from Wolfson Microelectronics.
1382
1383config GPIO_WM8350
1384 tristate "WM8350 GPIOs"
1385 depends on MFD_WM8350
1386 help
1387 Say yes here to access the GPIO signals of WM8350 power management
1388 chips from Wolfson Microelectronics.
1389
1390config GPIO_WM8994
1391 tristate "WM8994 GPIOs"
1392 depends on MFD_WM8994
1393 help
1394 Say yes here to access the GPIO signals of WM8994 audio hub
1395 CODECs from Wolfson Microelectronics.
1396
1397endmenu
1398
1399menu "PCI GPIO expanders"
1400 depends on PCI
1401
1402config GPIO_AMD8111
1403 tristate "AMD 8111 GPIO driver"
1404 depends on X86 || COMPILE_TEST
1405 help
1406 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1407
1408 Note, that usually system firmware/ACPI handles GPIO pins on their
1409 own and users might easily break their systems with uncarefull usage
1410 of this driver!
1411
1412 If unsure, say N
1413
1414config GPIO_BT8XX
1415 tristate "BT8XX GPIO abuser"
1416 depends on VIDEO_BT848=n
1417 help
1418 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1419 as a cheap PCI GPIO card.
1420
1421 This chip can be found on Miro, Hauppauge and STB TV-cards.
1422
1423 The card needs to be physically altered for using it as a
1424 GPIO card. For more information on how to build a GPIO card
1425 from a BT8xx TV card, see the documentation file at
1426 Documentation/driver-api/gpio/bt8xxgpio.rst
1427
1428 If unsure, say N.
1429
1430config GPIO_INTEL_MID
1431 bool "Intel MID GPIO support"
1432 depends on X86_INTEL_MID
1433 select GPIOLIB_IRQCHIP
1434 help
1435 Say Y here to support Intel MID GPIO.
1436
1437config GPIO_MERRIFIELD
1438 tristate "Intel Merrifield GPIO support"
1439 depends on X86_INTEL_MID
1440 select GPIOLIB_IRQCHIP
1441 help
1442 Say Y here to support Intel Merrifield GPIO.
1443
1444config GPIO_MLXBF
1445 tristate "Mellanox BlueField SoC GPIO"
1446 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1447 select GPIO_GENERIC
1448 help
1449 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1450
1451config GPIO_MLXBF2
1452 tristate "Mellanox BlueField 2 SoC GPIO"
1453 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1454 select GPIO_GENERIC
1455 help
1456 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1457
1458config GPIO_ML_IOH
1459 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1460 depends on X86 || COMPILE_TEST
1461 select GENERIC_IRQ_CHIP
1462 help
1463 ML7213 is companion chip for Intel Atom E6xx series.
1464 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1465 Hub) which is for IVI(In-Vehicle Infotainment) use.
1466 This driver can access the IOH's GPIO device.
1467
1468config GPIO_PCH
1469 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1470 depends on X86_32 || MIPS || COMPILE_TEST
1471 select GENERIC_IRQ_CHIP
1472 help
1473 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1474 which is an IOH(Input/Output Hub) for x86 embedded processor.
1475 This driver can access PCH GPIO device.
1476
1477 This driver also can be used for LAPIS Semiconductor IOH(Input/
1478 Output Hub), ML7223 and ML7831.
1479 ML7223 IOH is for MP(Media Phone) use.
1480 ML7831 IOH is for general purpose use.
1481 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1482 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1483
1484config GPIO_PCI_IDIO_16
1485 tristate "ACCES PCI-IDIO-16 GPIO support"
1486 select GPIOLIB_IRQCHIP
1487 help
1488 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1489 generated when any of the inputs change state (low to high or high to
1490 low). Input filter control is not supported by this driver, and the
1491 input filters are deactivated by this driver.
1492
1493config GPIO_PCIE_IDIO_24
1494 tristate "ACCES PCIe-IDIO-24 GPIO support"
1495 select GPIOLIB_IRQCHIP
1496 help
1497 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1498 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1499 when any of the inputs change state (low to high or high to low).
1500 Input filter control is not supported by this driver, and the input
1501 filters are deactivated by this driver.
1502
1503config GPIO_RDC321X
1504 tristate "RDC R-321x GPIO support"
1505 select MFD_CORE
1506 select MFD_RDC321X
1507 help
1508 Support for the RDC R321x SoC GPIOs over southbridge
1509 PCI configuration space.
1510
1511config GPIO_SODAVILLE
1512 bool "Intel Sodaville GPIO support"
1513 depends on X86 && OF
1514 select GPIO_GENERIC
1515 select GENERIC_IRQ_CHIP
1516 help
1517 Say Y here to support Intel Sodaville GPIO.
1518
1519endmenu
1520
1521menu "SPI GPIO expanders"
1522 depends on SPI_MASTER
1523
1524config GPIO_74X164
1525 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1526 depends on OF_GPIO
1527 help
1528 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1529 shift registers. This driver can be used to provide access
1530 to more gpio outputs.
1531
1532config GPIO_MAX3191X
1533 tristate "Maxim MAX3191x industrial serializer"
1534 select CRC8
1535 help
1536 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1537 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1538 chip to make 8 digital 24V inputs available via SPI. Supports
1539 CRC checksums to guard against electromagnetic interference,
1540 as well as undervoltage and overtemperature detection.
1541
1542config GPIO_MAX7301
1543 tristate "Maxim MAX7301 GPIO expander"
1544 select GPIO_MAX730X
1545 help
1546 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1547
1548config GPIO_MC33880
1549 tristate "Freescale MC33880 high-side/low-side switch"
1550 help
1551 SPI driver for Freescale MC33880 high-side/low-side switch.
1552 This provides GPIO interface supporting inputs and outputs.
1553
1554config GPIO_PISOSR
1555 tristate "Generic parallel-in/serial-out shift register"
1556 help
1557 GPIO driver for SPI compatible parallel-in/serial-out shift
1558 registers. These are input only devices.
1559
1560config GPIO_XRA1403
1561 tristate "EXAR XRA1403 16-bit GPIO expander"
1562 select REGMAP_SPI
1563 help
1564 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1565
1566config GPIO_MOXTET
1567 tristate "Turris Mox Moxtet bus GPIO expander"
1568 depends on MOXTET
1569 help
1570 Say yes here if you are building for the Turris Mox router.
1571 This is the driver needed for configuring the GPIOs via the Moxtet
1572 bus. For example the Mox module with SFP cage needs this driver
1573 so that phylink can use corresponding GPIOs.
1574
1575endmenu
1576
1577menu "USB GPIO expanders"
1578 depends on USB
1579
1580config GPIO_VIPERBOARD
1581 tristate "Viperboard GPIO a & b support"
1582 depends on MFD_VIPERBOARD
1583 help
1584 Say yes here to access the GPIO signals of Nano River
1585 Technologies Viperboard. There are two GPIO chips on the
1586 board: gpioa and gpiob.
1587 See viperboard API specification and Nano
1588 River Tech's viperboard.h for detailed meaning
1589 of the module parameters.
1590
1591endmenu
1592
1593config GPIO_AGGREGATOR
1594 tristate "GPIO Aggregator"
1595 help
1596 Say yes here to enable the GPIO Aggregator, which provides a way to
1597 aggregate existing GPIO lines into a new virtual GPIO chip.
1598 This can serve the following purposes:
1599 - Assign permissions for a collection of GPIO lines to a user,
1600 - Export a collection of GPIO lines to a virtual machine,
1601 - Provide a generic driver for a GPIO-operated device in an
1602 industrial control context, to be operated from userspace using
1603 the GPIO chardev interface.
1604
1605config GPIO_MOCKUP
1606 tristate "GPIO Testing Driver"
1607 select IRQ_SIM
1608 help
1609 This enables GPIO Testing driver, which provides a way to test GPIO
1610 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1611 must be selected for this test.
1612 User could use it through the script in
1613 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1614 it.
1615
1616endif