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