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)" if EXPERT
63	depends on SYSFS
64	select GPIO_CDEV # We need to encourage the new ABI
65	help
66	  Say Y here to add the legacy sysfs interface for GPIOs.
67
68	  This ABI is deprecated. If you want to use GPIO from userspace,
69	  use the character device /dev/gpiochipN with the appropriate
70	  ioctl() operations instead.
71
72config GPIO_CDEV
73	bool
74	prompt "Character device (/dev/gpiochipN) support" if EXPERT
75	default y
76	help
77	  Say Y here to add the character device /dev/gpiochipN interface
78	  for GPIOs. The character device allows userspace to control GPIOs
79	  using ioctl() operations.
80
81	  Only say N if you are sure that the GPIO character device is not
82	  required.
83
84	  If unsure, say Y.
85
86config GPIO_CDEV_V1
87	bool "Support GPIO ABI Version 1"
88	default y
89	depends on GPIO_CDEV
90	help
91	  Say Y here to support version 1 of the GPIO CDEV ABI.
92
93	  This ABI version is deprecated.
94	  Please use the latest ABI for new developments.
95
96	  If unsure, say Y.
97
98config GPIO_GENERIC
99	depends on HAS_IOMEM # Only for IOMEM drivers
100	tristate
101
102config GPIO_REGMAP
103	depends on REGMAP
104	tristate
105
106# put drivers in the right section, in alphabetical order
107
108# This symbol is selected by both I2C and SPI expanders
109config GPIO_MAX730X
110	tristate
111
112menu "Memory mapped GPIO drivers"
113	depends on HAS_IOMEM
114
115config GPIO_74XX_MMIO
116	tristate "GPIO driver for 74xx-ICs with MMIO access"
117	depends on OF_GPIO
118	select GPIO_GENERIC
119	help
120	  Say yes here to support GPIO functionality for 74xx-compatible ICs
121	  with MMIO access. Compatible models include:
122	    1 bit:	741G125 (Input), 741G74 (Output)
123	    2 bits:	742G125 (Input), 7474 (Output)
124	    4 bits:	74125 (Input), 74175 (Output)
125	    6 bits:	74365 (Input), 74174 (Output)
126	    8 bits:	74244 (Input), 74273 (Output)
127	    16 bits:	741624 (Input), 7416374 (Output)
128
129config GPIO_ALTERA
130	tristate "Altera GPIO"
131	depends on OF_GPIO
132	select GPIOLIB_IRQCHIP
133	help
134	  Say Y or M here to build support for the Altera PIO device.
135
136	  If driver is built as a module it will be called gpio-altera.
137
138config GPIO_AMDPT
139	tristate "AMD Promontory GPIO support"
140	depends on ACPI
141	select GPIO_GENERIC
142	help
143	  Driver for GPIO functionality on Promontory IOHub.
144	  Requires ACPI ASL code to enumerate as a platform device.
145
146config GPIO_ASPEED
147	tristate "Aspeed GPIO support"
148	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
149	select GPIOLIB_IRQCHIP
150	help
151	  Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
152
153config GPIO_ASPEED_SGPIO
154	bool "Aspeed SGPIO support"
155	depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
156	select GPIO_GENERIC
157	select GPIOLIB_IRQCHIP
158	help
159	  Say Y here to support Aspeed AST2500 SGPIO functionality.
160
161config GPIO_ATH79
162	tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
163	default y if ATH79
164	depends on ATH79 || COMPILE_TEST
165	select GPIO_GENERIC
166	select GPIOLIB_IRQCHIP
167	help
168	  Select this option to enable GPIO driver for
169	  Atheros AR71XX/AR724X/AR913X SoC devices.
170
171config GPIO_RASPBERRYPI_EXP
172	tristate "Raspberry Pi 3 GPIO Expander"
173	default RASPBERRYPI_FIRMWARE
174	depends on OF_GPIO
175	# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
176	# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
177	depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
178	help
179	  Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
180	  the firmware mailbox to communicate with VideoCore on BCM283x chips.
181
182config GPIO_BCM_KONA
183	bool "Broadcom Kona GPIO"
184	depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
185	help
186	  Turn on GPIO support for Broadcom "Kona" chips.
187
188config GPIO_BCM_XGS_IPROC
189	tristate "BRCM XGS iProc GPIO support"
190	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
191	select GPIO_GENERIC
192	select GPIOLIB_IRQCHIP
193	default ARCH_BCM_IPROC
194	help
195	  Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
196
197config GPIO_BRCMSTB
198	tristate "BRCMSTB GPIO support"
199	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
200	depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
201	select GPIO_GENERIC
202	select IRQ_DOMAIN
203	help
204	  Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
205
206config GPIO_CADENCE
207	tristate "Cadence GPIO support"
208	depends on OF_GPIO
209	select GPIO_GENERIC
210	select GPIOLIB_IRQCHIP
211	help
212	  Say yes here to enable support for Cadence GPIO controller.
213
214config GPIO_CLPS711X
215	tristate "CLPS711X GPIO support"
216	depends on ARCH_CLPS711X || COMPILE_TEST
217	select GPIO_GENERIC
218	help
219	  Say yes here to support GPIO on CLPS711X SoCs.
220
221config GPIO_DAVINCI
222	bool "TI Davinci/Keystone GPIO support"
223	default y if ARCH_DAVINCI
224	depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
225	help
226	  Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
227
228config GPIO_DWAPB
229	tristate "Synopsys DesignWare APB GPIO driver"
230	select GPIO_GENERIC
231	select GPIOLIB_IRQCHIP
232	help
233	  Say Y or M here to build support for the Synopsys DesignWare APB
234	  GPIO block.
235
236config GPIO_EIC_SPRD
237	tristate "Spreadtrum EIC support"
238	depends on ARCH_SPRD || COMPILE_TEST
239	depends on OF_GPIO
240	select GPIOLIB_IRQCHIP
241	help
242	  Say yes here to support Spreadtrum EIC device.
243
244config GPIO_EM
245	tristate "Emma Mobile GPIO"
246	depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
247	help
248	  Say yes here to support GPIO on Renesas Emma Mobile SoCs.
249
250config GPIO_EN7523
251	tristate "Airoha GPIO support"
252	depends on ARCH_AIROHA
253	default ARCH_AIROHA
254	select GPIO_GENERIC
255	select GPIOLIB_IRQCHIP
256	help
257	  Say Y or M here to support the GPIO controller block on the
258	  Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
259
260config GPIO_EP93XX
261	def_bool y
262	depends on ARCH_EP93XX
263	select GPIO_GENERIC
264	select GPIOLIB_IRQCHIP
265
266config GPIO_EXAR
267	tristate "Support for GPIO pins on XR17V352/354/358"
268	depends on SERIAL_8250_EXAR
269	select REGMAP_MMIO
270	help
271	  Selecting this option will enable handling of GPIO pins present
272	  on Exar XR17V352/354/358 chips.
273
274config GPIO_GE_FPGA
275	bool "GE FPGA based GPIO"
276	depends on GE_FPGA
277	select GPIO_GENERIC
278	help
279	  Support for common GPIO functionality provided on some GE Single Board
280	  Computers.
281
282	  This driver provides basic support (configure as input or output, read
283	  and write pin state) for GPIO implemented in a number of GE single
284	  board computers.
285
286config GPIO_FTGPIO010
287	bool "Faraday FTGPIO010 GPIO"
288	depends on OF_GPIO
289	select GPIO_GENERIC
290	select GPIOLIB_IRQCHIP
291	default (ARCH_GEMINI || ARCH_MOXART)
292	help
293	  Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
294	  Cortina systems Gemini platforms, Moxa ART and others.
295
296config GPIO_GENERIC_PLATFORM
297	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
298	select GPIO_GENERIC
299	help
300	  Say yes here to support basic platform_device memory-mapped GPIO controllers.
301
302config GPIO_GRGPIO
303	tristate "Aeroflex Gaisler GRGPIO support"
304	depends on OF_GPIO
305	select GPIO_GENERIC
306	select IRQ_DOMAIN
307	help
308	  Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
309	  VHDL IP core library.
310
311config GPIO_HISI
312	tristate "HiSilicon GPIO controller driver"
313	depends on (ARM64 && ACPI) || COMPILE_TEST
314	select GPIO_GENERIC
315	select GPIOLIB_IRQCHIP
316	help
317	  Say Y or M here to build support for the HiSilicon GPIO controller
318	  driver GPIO block.
319	  This GPIO controller supports double-edge interrupt and multi-core
320	  concurrent access.
321
322config GPIO_HLWD
323	tristate "Nintendo Wii (Hollywood) GPIO"
324	depends on OF_GPIO
325	select GPIO_GENERIC
326	select GPIOLIB_IRQCHIP
327	help
328	  Select this to support the GPIO controller of the Nintendo Wii.
329
330	  If unsure, say N.
331
332config GPIO_ICH
333	tristate "Intel ICH GPIO"
334	depends on X86
335	depends on LPC_ICH
336	help
337	  Say yes here to support the GPIO functionality of a number of Intel
338	  ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
339	  ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
340	  Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
341
342	  If unsure, say N.
343
344config GPIO_IMX_SCU
345       def_bool y
346       depends on IMX_SCU
347
348config GPIO_IOP
349	tristate "Intel IOP GPIO"
350	depends on ARCH_IOP32X || COMPILE_TEST
351	select GPIO_GENERIC
352	help
353	  Say yes here to support the GPIO functionality of a number of Intel
354	  IOP32X or IOP33X series of chips.
355
356	  If unsure, say N.
357
358config GPIO_IXP4XX
359	bool "Intel IXP4xx GPIO"
360	depends on ARCH_IXP4XX
361	depends on OF
362	select GPIO_GENERIC
363	select GPIOLIB_IRQCHIP
364	select IRQ_DOMAIN_HIERARCHY
365	help
366	  Say yes here to support the GPIO functionality of a number of Intel
367	  IXP4xx series of chips.
368
369	  If unsure, say N.
370
371config GPIO_LOGICVC
372	tristate "Xylon LogiCVC GPIO support"
373	depends on MFD_SYSCON && OF
374	help
375	  Say yes here to support GPIO functionality of the Xylon LogiCVC
376	  programmable logic block.
377
378config GPIO_LOONGSON
379	bool "Loongson-2/3 GPIO support"
380	depends on CPU_LOONGSON2EF || CPU_LOONGSON64
381	help
382	  Driver for GPIO functionality on Loongson-2F/3A/3B processors.
383
384config GPIO_LPC18XX
385	tristate "NXP LPC18XX/43XX GPIO support"
386	default y if ARCH_LPC18XX
387	depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
388	select IRQ_DOMAIN_HIERARCHY
389	help
390	  Select this option to enable GPIO driver for
391	  NXP LPC18XX/43XX devices.
392
393config GPIO_LPC32XX
394	tristate "NXP LPC32XX GPIO support"
395	depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
396	help
397	  Select this option to enable GPIO driver for
398	  NXP LPC32XX devices.
399
400config GPIO_MB86S7X
401	tristate "GPIO support for Fujitsu MB86S7x Platforms"
402	help
403	  Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
404
405config GPIO_MENZ127
406	tristate "MEN 16Z127 GPIO support"
407	depends on MCB
408	select GPIO_GENERIC
409	help
410	  Say yes here to support the MEN 16Z127 GPIO Controller.
411
412config GPIO_MM_LANTIQ
413	bool "Lantiq Memory mapped GPIOs"
414	depends on LANTIQ && SOC_XWAY
415	help
416	  This enables support for memory mapped GPIOs on the External Bus Unit
417	  (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
418	  created by attaching a 16-bit latch to the bus.
419
420config GPIO_MPC5200
421	def_bool y
422	depends on PPC_MPC52xx
423
424config GPIO_MPC8XXX
425	bool "MPC512x/MPC8xxx/QorIQ GPIO support"
426	depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
427		   FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
428		   COMPILE_TEST
429	select GPIO_GENERIC
430	select IRQ_DOMAIN
431	help
432	  Say Y here if you're going to use hardware that connects to the
433	  MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
434
435config GPIO_MT7621
436	bool "Mediatek MT7621 GPIO Support"
437	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
438	depends on OF_GPIO
439	select GPIO_GENERIC
440	select GPIOLIB_IRQCHIP
441	help
442	  Say yes here to support the Mediatek MT7621 SoC GPIO device.
443
444config GPIO_MVEBU
445	def_bool y
446	depends on PLAT_ORION || ARCH_MVEBU
447	depends on OF_GPIO
448	select GENERIC_IRQ_CHIP
449	select REGMAP_MMIO
450
451config GPIO_MXC
452	tristate "i.MX GPIO support"
453	depends on ARCH_MXC || COMPILE_TEST
454	select GPIO_GENERIC
455	select GENERIC_IRQ_CHIP
456
457config GPIO_MXS
458	bool "Freescale MXS GPIO support" if COMPILE_TEST
459	depends on ARCH_MXS || COMPILE_TEST
460	default y if ARCH_MXS
461	select GPIO_GENERIC
462	select GENERIC_IRQ_CHIP
463
464config GPIO_OCTEON
465	tristate "Cavium OCTEON GPIO"
466	depends on CAVIUM_OCTEON_SOC
467	default y
468	help
469	  Say yes here to support the on-chip GPIO lines on the OCTEON
470	  family of SOCs.
471
472config GPIO_OMAP
473	tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
474	default y if ARCH_OMAP
475	depends on ARM
476	select GENERIC_IRQ_CHIP
477	select GPIOLIB_IRQCHIP
478	help
479	  Say yes here to enable GPIO support for TI OMAP SoCs.
480
481config GPIO_PL061
482	tristate "PrimeCell PL061 GPIO support"
483	depends on ARM_AMBA
484	select IRQ_DOMAIN
485	select GPIOLIB_IRQCHIP
486	help
487	  Say yes here to support the PrimeCell PL061 GPIO device.
488
489config GPIO_PMIC_EIC_SPRD
490	tristate "Spreadtrum PMIC EIC support"
491	depends on MFD_SC27XX_PMIC || COMPILE_TEST
492	depends on OF_GPIO
493	select GPIOLIB_IRQCHIP
494	help
495	  Say yes here to support Spreadtrum PMIC EIC device.
496
497config GPIO_PXA
498	bool "PXA GPIO support"
499	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
500	help
501	  Say yes here to support the PXA GPIO device.
502
503config GPIO_RCAR
504	tristate "Renesas R-Car and RZ/G GPIO support"
505	depends on ARCH_RENESAS || COMPILE_TEST
506	select GPIOLIB_IRQCHIP
507	help
508	  Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
509
510config GPIO_RDA
511	bool "RDA Micro GPIO controller support"
512	depends on ARCH_RDA || COMPILE_TEST
513	depends on OF_GPIO
514	select GPIO_GENERIC
515	select GPIOLIB_IRQCHIP
516	help
517	  Say Y here to support RDA Micro GPIO controller.
518
519config GPIO_REALTEK_OTTO
520	tristate "Realtek Otto GPIO support"
521	depends on MACH_REALTEK_RTL
522	default MACH_REALTEK_RTL
523	select GPIO_GENERIC
524	select GPIOLIB_IRQCHIP
525	help
526	  The GPIO controller on the Otto MIPS platform supports up to two
527	  banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
528	  are grouped in four 8-bit wide ports.
529
530	  When built as a module, the module will be called realtek_otto_gpio.
531
532config GPIO_REG
533	bool
534	help
535	  A 32-bit single register GPIO fixed in/out implementation.  This
536	  can be used to represent any register as a set of GPIO signals.
537
538config GPIO_ROCKCHIP
539	tristate "Rockchip GPIO support"
540	depends on ARCH_ROCKCHIP || COMPILE_TEST
541	select GENERIC_IRQ_CHIP
542	select GPIOLIB_IRQCHIP
543	default ARCH_ROCKCHIP
544	help
545	  Say yes here to support GPIO on Rockchip SoCs.
546
547config GPIO_SAMA5D2_PIOBU
548	tristate "SAMA5D2 PIOBU GPIO support"
549	depends on MFD_SYSCON
550	depends on OF_GPIO
551	depends on ARCH_AT91 || COMPILE_TEST
552	select GPIO_SYSCON
553	help
554	  Say yes here to use the PIOBU pins as GPIOs.
555
556	  PIOBU pins on the SAMA5D2 can be used as GPIOs.
557	  The difference from regular GPIOs is that they
558	  maintain their value during backup/self-refresh.
559
560config GPIO_SIFIVE
561	bool "SiFive GPIO support"
562	depends on OF_GPIO
563	select IRQ_DOMAIN_HIERARCHY
564	select GPIO_GENERIC
565	select GPIOLIB_IRQCHIP
566	select REGMAP_MMIO
567	help
568	  Say yes here to support the GPIO device on SiFive SoCs.
569
570config GPIO_SIOX
571	tristate "SIOX GPIO support"
572	depends on SIOX
573	select GPIOLIB_IRQCHIP
574	help
575	  Say yes here to support SIOX I/O devices. These are units connected
576	  via a SIOX bus and have a number of fixed-direction I/O lines.
577
578config GPIO_SNPS_CREG
579	bool "Synopsys GPIO via CREG (Control REGisters) driver"
580	depends on ARC || COMPILE_TEST
581	depends on OF_GPIO
582	help
583	  This driver supports GPIOs via CREG on various Synopsys SoCs.
584	  This is a single-register MMIO GPIO driver for complex cases
585	  where only several fields in register belong to GPIO lines and
586	  each GPIO line owns a field with different length and on/off value.
587
588config GPIO_SPEAR_SPICS
589	bool "ST SPEAr13xx SPI Chip Select as GPIO support"
590	depends on PLAT_SPEAR
591	select GENERIC_IRQ_CHIP
592	help
593	  Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
594
595config GPIO_SPRD
596	tristate "Spreadtrum GPIO support"
597	depends on ARCH_SPRD || COMPILE_TEST
598	depends on OF_GPIO
599	select GPIOLIB_IRQCHIP
600	help
601	  Say yes here to support Spreadtrum GPIO device.
602
603config GPIO_STA2X11
604	bool "STA2x11/ConneXt GPIO support"
605	depends on MFD_STA2X11
606	select GENERIC_IRQ_CHIP
607	help
608	  Say yes here to support the STA2x11/ConneXt GPIO device.
609	  The GPIO module has 128 GPIO pins with alternate functions.
610
611config GPIO_STP_XWAY
612	bool "XWAY STP GPIOs"
613	depends on SOC_XWAY || COMPILE_TEST
614	depends on OF_GPIO
615	help
616	  This enables support for the Serial To Parallel (STP) unit found on
617	  XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
618	  that can be up to 24 bits. This peripheral is aimed at driving LEDs.
619	  Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
620	  phy status.
621
622config GPIO_SYSCON
623	tristate "GPIO based on SYSCON"
624	depends on MFD_SYSCON && OF
625	help
626	  Say yes here to support GPIO functionality though SYSCON driver.
627
628config GPIO_TB10X
629	bool
630	select GPIO_GENERIC
631	select GENERIC_IRQ_CHIP
632	select OF_GPIO
633
634config GPIO_TEGRA
635	tristate "NVIDIA Tegra GPIO support"
636	default ARCH_TEGRA
637	depends on ARCH_TEGRA || COMPILE_TEST
638	depends on OF_GPIO
639	select GPIOLIB_IRQCHIP
640	select IRQ_DOMAIN_HIERARCHY
641	help
642	  Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
643
644config GPIO_TEGRA186
645	tristate "NVIDIA Tegra186 GPIO support"
646	default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
647	depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
648	depends on OF_GPIO
649	select GPIOLIB_IRQCHIP
650	select IRQ_DOMAIN_HIERARCHY
651	help
652	  Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
653
654config GPIO_TS4800
655	tristate "TS-4800 DIO blocks and compatibles"
656	depends on OF_GPIO
657	depends on SOC_IMX51 || COMPILE_TEST
658	select GPIO_GENERIC
659	help
660	  This driver support TS-4800 FPGA GPIO controllers.
661
662config GPIO_THUNDERX
663	tristate "Cavium ThunderX/OCTEON-TX GPIO"
664	depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
665	depends on PCI_MSI
666	select GPIOLIB_IRQCHIP
667	select IRQ_DOMAIN_HIERARCHY
668	select IRQ_FASTEOI_HIERARCHY_HANDLERS
669	help
670	  Say yes here to support the on-chip GPIO lines on the ThunderX
671	  and OCTEON-TX families of SoCs.
672
673config GPIO_UNIPHIER
674	tristate "UniPhier GPIO support"
675	depends on ARCH_UNIPHIER || COMPILE_TEST
676	depends on OF_GPIO
677	select IRQ_DOMAIN_HIERARCHY
678	help
679	  Say yes here to support UniPhier GPIOs.
680
681config GPIO_VF610
682	def_bool y
683	depends on ARCH_MXC
684	select GPIOLIB_IRQCHIP
685	help
686	  Say yes here to support i.MX or Vybrid vf610 GPIOs.
687
688config GPIO_VISCONTI
689	tristate "Toshiba Visconti GPIO support"
690	depends on ARCH_VISCONTI || COMPILE_TEST
691	depends on OF_GPIO
692	select GPIOLIB_IRQCHIP
693	select GPIO_GENERIC
694	select IRQ_DOMAIN_HIERARCHY
695	help
696	  Say yes here to support GPIO on Tohisba Visconti.
697
698config GPIO_VX855
699	tristate "VIA VX855/VX875 GPIO"
700	depends on (X86 || COMPILE_TEST) && PCI
701	select MFD_CORE
702	select MFD_VX855
703	help
704	  Support access to the VX855/VX875 GPIO lines through the GPIO library.
705
706	  This driver provides common support for accessing the device.
707	  Additional drivers must be enabled in order to use the
708	  functionality of the device.
709
710config GPIO_WCD934X
711	tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
712	depends on MFD_WCD934X && OF_GPIO
713	help
714         This driver is to support GPIO block found on the Qualcomm Technologies
715	 Inc WCD9340/WCD9341 Audio Codec.
716
717config GPIO_XGENE
718	bool "APM X-Gene GPIO controller support"
719	depends on ARM64 && OF_GPIO
720	help
721	  This driver is to support the GPIO block within the APM X-Gene SoC
722	  platform's generic flash controller. The GPIO pins are muxed with
723	  the generic flash controller's address and data pins. Say yes
724	  here to enable the GFC GPIO functionality.
725
726config GPIO_XGENE_SB
727	tristate "APM X-Gene GPIO standby controller support"
728	depends on (ARCH_XGENE || COMPILE_TEST)
729	select GPIO_GENERIC
730	select GPIOLIB_IRQCHIP
731	select IRQ_DOMAIN_HIERARCHY
732	help
733	  This driver supports the GPIO block within the APM X-Gene
734	  Standby Domain. Say yes here to enable the GPIO functionality.
735
736config GPIO_XILINX
737	tristate "Xilinx GPIO support"
738	select GPIOLIB_IRQCHIP
739	depends on OF_GPIO
740	help
741	  Say yes here to support the Xilinx FPGA GPIO device.
742
743config GPIO_XLP
744	tristate "Cavium ThunderX2 GPIO support"
745	depends on ARCH_THUNDER2 || COMPILE_TEST
746	select GPIOLIB_IRQCHIP
747	help
748	  This driver provides support for GPIO interface on Cavium's ThunderX2
749	  CN99XX SoCs (Originally from Netlogic XLP).
750
751	  If unsure, say N.
752
753config GPIO_XTENSA
754	bool "Xtensa GPIO32 support"
755	depends on XTENSA
756	depends on HAVE_XTENSA_GPIO32
757	depends on !SMP
758	help
759	  Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
760	  and EXPSTATE (output) ports.
761
762config GPIO_ZEVIO
763	bool "LSI ZEVIO SoC memory mapped GPIOs"
764	depends on ARM && OF_GPIO
765	help
766	  Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
767
768config GPIO_ZYNQ
769	tristate "Xilinx Zynq GPIO support"
770	depends on ARCH_ZYNQ || ARCH_ZYNQMP
771	select GPIOLIB_IRQCHIP
772	help
773	  Say yes here to support Xilinx Zynq GPIO controller.
774
775config GPIO_ZYNQMP_MODEPIN
776	tristate "ZynqMP ps-mode pin GPIO configuration driver"
777	depends on ZYNQMP_FIRMWARE
778	default ZYNQMP_FIRMWARE
779	help
780	  Say yes here to support the ZynqMP ps-mode pin GPIO configuration
781	  driver.
782
783	  This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
784	  is 4-bits boot mode pins. It sets and gets the status of
785	  the ps-mode pin. Every pin can be configured as input/output.
786
787config GPIO_LOONGSON1
788	tristate "Loongson1 GPIO support"
789	depends on MACH_LOONGSON32
790	select GPIO_GENERIC
791	help
792	  Say Y or M here to support GPIO on Loongson1 SoCs.
793
794config GPIO_AMD_FCH
795	tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
796	help
797	  This option enables driver for GPIO on AMD's Fusion Controller Hub,
798	  as found on G-series SOCs (e.g. GX-412TC).
799
800	  Note: This driver doesn't register itself automatically, as it
801	  needs to be provided with platform-specific configuration.
802	  (See e.g. CONFIG_PCENGINES_APU2.)
803
804config GPIO_MSC313
805	bool "MStar MSC313 GPIO support"
806	depends on ARCH_MSTARV7
807	default ARCH_MSTARV7
808	select GPIOLIB_IRQCHIP
809	select IRQ_DOMAIN_HIERARCHY
810	help
811	  Say Y here to support the main GPIO block on MStar/SigmaStar
812	  ARMv7-based SoCs.
813
814config GPIO_IDT3243X
815	tristate "IDT 79RC3243X GPIO support"
816	depends on MIKROTIK_RB532 || COMPILE_TEST
817	select GPIO_GENERIC
818	select GPIOLIB_IRQCHIP
819	help
820	  Select this option to enable GPIO driver for
821	  IDT 79RC3243X-based devices like Mikrotik RB532.
822
823	  To compile this driver as a module, choose M here: the module will
824	  be called gpio-idt3243x.
825
826endmenu
827
828menu "Port-mapped I/O GPIO drivers"
829	depends on X86 # Unconditional I/O space access
830
831config GPIO_I8255
832	tristate
833	help
834	  Enables support for the i8255 interface library functions. The i8255
835	  interface library provides functions to facilitate communication with
836	  interfaces compatible with the venerable Intel 8255 Programmable
837	  Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
838	  in the early 1970s but compatible interfaces are nowadays typically
839	  found embedded in larger VLSI processing chips and FPGA components.
840
841	  If built as a module its name will be gpio-i8255.
842
843config GPIO_104_DIO_48E
844	tristate "ACCES 104-DIO-48E GPIO support"
845	depends on PC104
846	select ISA_BUS_API
847	select GPIOLIB_IRQCHIP
848	select GPIO_I8255
849	help
850	  Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
851	  104-DIO-24E). The base port addresses for the devices may be
852	  configured via the base module parameter. The interrupt line numbers
853	  for the devices may be configured via the irq module parameter.
854
855config GPIO_104_IDIO_16
856	tristate "ACCES 104-IDIO-16 GPIO support"
857	depends on PC104
858	select ISA_BUS_API
859	select GPIOLIB_IRQCHIP
860	help
861	  Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
862	  104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
863	  base port addresses for the devices may be configured via the base
864	  module parameter. The interrupt line numbers for the devices may be
865	  configured via the irq module parameter.
866
867config GPIO_104_IDI_48
868	tristate "ACCES 104-IDI-48 GPIO support"
869	depends on PC104
870	select ISA_BUS_API
871	select GPIOLIB_IRQCHIP
872	select GPIO_I8255
873	help
874	  Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
875	  104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
876	  the devices may be configured via the base module parameter. The
877	  interrupt line numbers for the devices may be configured via the irq
878	  module parameter.
879
880config GPIO_F7188X
881	tristate "Fintek and Nuvoton Super-I/O GPIO support"
882	help
883	  This option enables support for GPIOs found on Fintek Super-I/O
884	  chips F71869, F71869A, F71882FG, F71889F and F81866.
885	  As well as Nuvoton Super-I/O chip NCT6116D.
886
887	  To compile this driver as a module, choose M here: the module will
888	  be called f7188x-gpio.
889
890config GPIO_GPIO_MM
891	tristate "Diamond Systems GPIO-MM GPIO support"
892	depends on PC104
893	select ISA_BUS_API
894	select GPIO_I8255
895	help
896	  Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
897
898	  The Diamond Systems GPIO-MM device features 48 lines of digital I/O
899	  via the emulation of dual 82C55A PPI chips. This driver provides GPIO
900	  support for these 48 channels of digital I/O.
901
902	  The base port addresses for the devices may be configured via the base
903	  array module parameter.
904
905config GPIO_IT87
906	tristate "IT87xx GPIO support"
907	help
908	  Say yes here to support GPIO functionality of IT87xx Super I/O chips.
909
910	  This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
911	  supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
912	  well.
913
914	  To compile this driver as a module, choose M here: the module will
915	  be called gpio_it87.
916
917config GPIO_SCH
918	tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
919	depends on (X86 || COMPILE_TEST) && ACPI
920	depends on LPC_SCH
921	select GPIOLIB_IRQCHIP
922	help
923	  Say yes here to support GPIO interface on Intel Poulsbo SCH,
924	  Intel Tunnel Creek processor, Intel Centerton processor or
925	  Intel Quark X1000 SoC.
926
927	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
928	  powered by the core power rail and are turned off during sleep
929	  modes (S3 and higher). The remaining four GPIOs are powered by
930	  the Intel SCH suspend power supply. These GPIOs remain
931	  active during S3. The suspend-powered GPIOs can be used to wake the
932	  system from the Suspend-to-RAM state.
933
934	  The Intel Tunnel Creek processor has 5 GPIOs powered by the
935	  core power rail and 9 from suspend power supply.
936
937	  The Intel Centerton processor has a total of 30 GPIO pins.
938	  Twenty-one are powered by the core power rail and 9 from the
939	  suspend power supply.
940
941	  The Intel Quark X1000 SoC has 2 GPIOs powered by the core
942	  power well and 6 from the suspend power well.
943
944config GPIO_SCH311X
945	tristate "SMSC SCH311x SuperI/O GPIO"
946	help
947	  Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
948	  SCH3116 "Super I/O" chipsets.
949
950	  To compile this driver as a module, choose M here: the module will
951	  be called gpio-sch311x.
952
953config GPIO_TS5500
954	tristate "TS-5500 DIO blocks and compatibles"
955	depends on TS5500 || COMPILE_TEST
956	help
957	  This driver supports Digital I/O exposed by pin blocks found on some
958	  Technologic Systems platforms. It includes, but is not limited to, 3
959	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
960	  LCD port.
961
962config GPIO_WINBOND
963	tristate "Winbond Super I/O GPIO support"
964	select ISA_BUS_API
965	help
966	  This option enables support for GPIOs found on Winbond Super I/O
967	  chips.
968	  Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
969	  supported.
970
971	  You will need to provide a module parameter "gpios", or a
972	  boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
973	  ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
974
975	  To compile this driver as a module, choose M here: the module will
976	  be called gpio-winbond.
977
978config GPIO_WS16C48
979	tristate "WinSystems WS16C48 GPIO support"
980	select ISA_BUS_API
981	select GPIOLIB_IRQCHIP
982	help
983	  Enables GPIO support for the WinSystems WS16C48. The base port
984	  addresses for the devices may be configured via the base module
985	  parameter. The interrupt line numbers for the devices may be
986	  configured via the irq module parameter.
987
988endmenu
989
990menu "I2C GPIO expanders"
991	depends on I2C
992
993config GPIO_ADNP
994	tristate "Avionic Design N-bit GPIO expander"
995	depends on OF_GPIO
996	select GPIOLIB_IRQCHIP
997	help
998	  This option enables support for N GPIOs found on Avionic Design
999	  I2C GPIO expanders. The register space will be extended by powers
1000	  of two, so the controller will need to accommodate for that. For
1001	  example: if a controller provides 48 pins, 6 registers will be
1002	  enough to represent all pins, but the driver will assume a
1003	  register layout for 64 pins (8 registers).
1004
1005config GPIO_GW_PLD
1006	tristate "Gateworks PLD GPIO Expander"
1007	depends on OF_GPIO
1008	help
1009	  Say yes here to provide access to the Gateworks I2C PLD GPIO
1010	  Expander. This is used at least on the Cambria GW2358-4.
1011
1012config GPIO_MAX7300
1013	tristate "Maxim MAX7300 GPIO expander"
1014	select GPIO_MAX730X
1015	help
1016	  GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1017
1018config GPIO_MAX732X
1019	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1020	help
1021	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1022	  Port Expanders. Each IO port on these chips has a fixed role of
1023	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1024	  Input and Output (designed by 'P'). The combinations are listed
1025	  below:
1026
1027	  8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
1028	                max7322 (4I4O), max7323 (4P4O)
1029
1030	  16 bits:      max7324 (8I8O), max7325 (8P8O),
1031	                max7326 (4I12O), max7327 (4P12O)
1032
1033	  Board setup code must specify the model to use, and the start
1034	  number for these GPIOs.
1035
1036config GPIO_MAX732X_IRQ
1037	bool "Interrupt controller support for MAX732x"
1038	depends on GPIO_MAX732X=y
1039	select GPIOLIB_IRQCHIP
1040	help
1041	  Say yes here to enable the max732x to be used as an interrupt
1042	  controller. It requires the driver to be built in the kernel.
1043
1044config GPIO_PCA953X
1045	tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1046	select REGMAP_I2C
1047	help
1048	  Say yes here to provide access to several register-oriented
1049	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
1050	  models include:
1051
1052	  4 bits:       pca9536, pca9537
1053
1054	  8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1055	                pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1056
1057	  16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1058	                tca6416
1059
1060	  24 bits:      tca6424
1061
1062	  40 bits:      pca9505, pca9698
1063
1064config GPIO_PCA953X_IRQ
1065	bool "Interrupt controller support for PCA953x"
1066	depends on GPIO_PCA953X
1067	select GPIOLIB_IRQCHIP
1068	help
1069	  Say yes here to enable the pca953x to be used as an interrupt
1070	  controller.
1071
1072config GPIO_PCA9570
1073	tristate "PCA9570 4-Bit I2C GPO expander"
1074	help
1075	  Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1076
1077	  To compile this driver as a module, choose M here: the module will
1078	  be called gpio-pca9570.
1079
1080config GPIO_PCF857X
1081	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1082	select GPIOLIB_IRQCHIP
1083	select IRQ_DOMAIN
1084	help
1085	  Say yes here to provide access to most "quasi-bidirectional" I2C
1086	  GPIO expanders used for additional digital outputs or inputs.
1087	  Most of these parts are from NXP, though TI is a second source for
1088	  some of them.  Compatible models include:
1089
1090	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
1091	            pca9670, pca9672, pca9674, pca9674a,
1092	            max7328, max7329
1093
1094	  16 bits:  pcf8575, pcf8575c, pca8575,
1095	            pca9671, pca9673, pca9675
1096
1097	  Your board setup code will need to declare the expanders in
1098	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
1099	  can then be used from drivers and other kernel code, just like
1100	  other GPIOs, but only accessible from task contexts.
1101
1102	  This driver provides an in-kernel interface to those GPIOs using
1103	  platform-neutral GPIO calls.
1104
1105config GPIO_TPIC2810
1106	tristate "TPIC2810 8-Bit I2C GPO expander"
1107	help
1108	  Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1109
1110	  To compile this driver as a module, choose M here: the module will
1111	  be called gpio-tpic2810.
1112
1113config GPIO_TS4900
1114	tristate "Technologic Systems FPGA I2C GPIO"
1115	depends on SOC_IMX6 || COMPILE_TEST
1116	select REGMAP_I2C
1117	help
1118	  Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1119	  Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1120
1121endmenu
1122
1123menu "MFD GPIO expanders"
1124
1125config GPIO_ADP5520
1126	tristate "GPIO Support for ADP5520 PMIC"
1127	depends on PMIC_ADP5520
1128	help
1129	  This option enables support for on-chip GPIO found
1130	  on Analog Devices ADP5520 PMICs.
1131
1132config GPIO_ALTERA_A10SR
1133	tristate "Altera Arria10 System Resource GPIO"
1134	depends on MFD_ALTERA_A10SR
1135	help
1136	  Driver for Arria10 Development Kit GPIO expansion which
1137	  includes reads of pushbuttons and DIP switches as well
1138	  as writes to LEDs.
1139
1140config GPIO_ARIZONA
1141	tristate "Wolfson Microelectronics Arizona class devices"
1142	depends on MFD_ARIZONA
1143	help
1144	  Support for GPIOs on Wolfson Arizona class devices.
1145
1146config GPIO_BD71815
1147	tristate "ROHM BD71815 PMIC GPIO support"
1148	depends on MFD_ROHM_BD71828
1149	help
1150	  Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1151	  available on the ROHM PMIC.
1152
1153	  This driver can also be built as a module. If so, the module
1154	  will be called gpio-bd71815.
1155
1156config GPIO_BD71828
1157	tristate "ROHM BD71828 GPIO support"
1158	depends on MFD_ROHM_BD71828
1159	help
1160	  Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1161	  available on the ROHM PMIC in total. The GPIOs are limited to
1162	  outputs only and pins must be configured to GPIO outputs by
1163	  OTP. Enable this only if you want to use these pins as outputs.
1164
1165	  This driver can also be built as a module. If so, the module
1166	  will be called gpio-bd71828.
1167
1168config GPIO_BD9571MWV
1169	tristate "ROHM BD9571 GPIO support"
1170	depends on MFD_BD9571MWV
1171	help
1172	  Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1173	  available on the ROHM PMIC in total, both of which can also
1174	  generate interrupts.
1175
1176	  This driver can also be built as a module. If so, the module
1177	  will be called gpio-bd9571mwv.
1178
1179config GPIO_CRYSTAL_COVE
1180	tristate "GPIO support for Crystal Cove PMIC"
1181	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1182	select GPIOLIB_IRQCHIP
1183	help
1184	  Support for GPIO pins on Crystal Cove PMIC.
1185
1186	  Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1187	  inside.
1188
1189	  This driver can also be built as a module. If so, the module will be
1190	  called gpio-crystalcove.
1191
1192config GPIO_CS5535
1193	tristate "AMD CS5535/CS5536 GPIO support"
1194	depends on X86 || MIPS || COMPILE_TEST
1195	depends on MFD_CS5535
1196	help
1197	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1198	  can be used for quite a number of things.  The CS5535/6 is found on
1199	  AMD Geode and Lemote Yeeloong devices.
1200
1201	  If unsure, say N.
1202
1203config GPIO_DA9052
1204	tristate "Dialog DA9052 GPIO"
1205	depends on PMIC_DA9052
1206	help
1207	  Say yes here to enable the GPIO driver for the DA9052 chip.
1208
1209config GPIO_DA9055
1210	tristate "Dialog Semiconductor DA9055 GPIO"
1211	depends on MFD_DA9055
1212	help
1213	  Say yes here to enable the GPIO driver for the DA9055 chip.
1214
1215	  The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1216	  be controlled by this driver.
1217
1218	  If driver is built as a module it will be called gpio-da9055.
1219
1220config GPIO_DLN2
1221	tristate "Diolan DLN2 GPIO support"
1222	depends on MFD_DLN2
1223	select GPIOLIB_IRQCHIP
1224
1225	help
1226	  Select this option to enable GPIO driver for the Diolan DLN2
1227	  board.
1228
1229	  This driver can also be built as a module. If so, the module
1230	  will be called gpio-dln2.
1231
1232config HTC_EGPIO
1233	bool "HTC EGPIO support"
1234	depends on ARM
1235	help
1236	  This driver supports the CPLD egpio chip present on
1237	  several HTC phones.  It provides basic support for input
1238	  pins, output pins, and IRQs.
1239
1240config GPIO_JANZ_TTL
1241	tristate "Janz VMOD-TTL Digital IO Module"
1242	depends on MFD_JANZ_CMODIO
1243	help
1244	  This enables support for the Janz VMOD-TTL Digital IO module.
1245	  This driver provides support for driving the pins in output
1246	  mode only. Input mode is not supported.
1247
1248config GPIO_KEMPLD
1249	tristate "Kontron ETX / COMexpress GPIO"
1250	depends on MFD_KEMPLD
1251	help
1252	  This enables support for the PLD GPIO interface on some Kontron ETX
1253	  and COMexpress (ETXexpress) modules.
1254
1255	  This driver can also be built as a module. If so, the module will be
1256	  called gpio-kempld.
1257
1258config GPIO_LP3943
1259	tristate "TI/National Semiconductor LP3943 GPIO expander"
1260	depends on MFD_LP3943
1261	help
1262	  GPIO driver for LP3943 MFD.
1263	  LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1264	  Open drain outputs are required for this usage.
1265
1266config GPIO_LP873X
1267	tristate "TI LP873X GPO"
1268	depends on MFD_TI_LP873X
1269	help
1270	  This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1271	  on LP873X PMICs.
1272
1273	  This driver can also be built as a module. If so, the module will be
1274	  called gpio-lp873x.
1275
1276config GPIO_LP87565
1277	tristate "TI LP87565 GPIO"
1278	depends on MFD_TI_LP87565
1279	help
1280	  This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1281	  on LP87565 PMICs.
1282
1283	  This driver can also be built as a module. If so, the module will be
1284	  called gpio-lp87565.
1285
1286config GPIO_MADERA
1287	tristate "Cirrus Logic Madera class codecs"
1288	depends on PINCTRL_MADERA
1289	help
1290	  Support for GPIOs on Cirrus Logic Madera class codecs.
1291
1292config GPIO_MAX77620
1293	tristate "GPIO support for PMIC MAX77620 and MAX20024"
1294	depends on MFD_MAX77620
1295	select GPIOLIB_IRQCHIP
1296	help
1297	  GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1298	  MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1299	  driver also provides interrupt support for each of the GPIOs.
1300	  Say yes here to enable the max77620 to be used as GPIO controller.
1301
1302config GPIO_MAX77650
1303	tristate "Maxim MAX77650/77651 GPIO support"
1304	depends on MFD_MAX77650
1305	help
1306	  GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1307	  These chips have a single pin that can be configured as GPIO.
1308
1309config GPIO_PALMAS
1310	bool "TI PALMAS series PMICs GPIO"
1311	depends on MFD_PALMAS
1312	help
1313	  Select this option to enable GPIO driver for the TI PALMAS
1314	  series chip family.
1315
1316config GPIO_RC5T583
1317	bool "RICOH RC5T583 GPIO"
1318	depends on MFD_RC5T583
1319	help
1320	  Select this option to enable GPIO driver for the Ricoh RC5T583
1321	  chip family.
1322	  This driver provides the support for driving/reading the GPIO pins
1323	  of RC5T583 device through standard GPIO library.
1324
1325config GPIO_SL28CPLD
1326	tristate "Kontron sl28cpld GPIO support"
1327	depends on MFD_SL28CPLD || COMPILE_TEST
1328	select GPIO_REGMAP
1329	select GPIOLIB_IRQCHIP
1330	select REGMAP_IRQ
1331	help
1332	  This enables support for the GPIOs found on the Kontron sl28 CPLD.
1333
1334	  This driver can also be built as a module. If so, the module will be
1335	  called gpio-sl28cpld.
1336
1337config GPIO_STMPE
1338	bool "STMPE GPIOs"
1339	depends on MFD_STMPE
1340	depends on OF_GPIO
1341	select GPIOLIB_IRQCHIP
1342	help
1343	  This enables support for the GPIOs found on the STMPE I/O
1344	  Expanders.
1345
1346config GPIO_TC3589X
1347	bool "TC3589X GPIOs"
1348	depends on MFD_TC3589X
1349	depends on OF_GPIO
1350	select GPIOLIB_IRQCHIP
1351	help
1352	  This enables support for the GPIOs found on the TC3589X
1353	  I/O Expander.
1354
1355config GPIO_TIMBERDALE
1356	bool "Support for timberdale GPIO IP"
1357	depends on MFD_TIMBERDALE
1358	help
1359	Add support for the GPIO IP in the timberdale FPGA.
1360
1361config GPIO_TN48M_CPLD
1362	tristate "Delta Networks TN48M switch CPLD GPIO driver"
1363	depends on MFD_TN48M_CPLD
1364	select GPIO_REGMAP
1365	help
1366	  This enables support for the GPIOs found on the Delta
1367	  Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1368	  they are input-only or output-only type.
1369
1370	  This driver can also be built as a module. If so, the
1371	  module will be called gpio-tn48m.
1372
1373config GPIO_TPS65086
1374	tristate "TI TPS65086 GPO"
1375	depends on MFD_TPS65086
1376	help
1377	  This driver supports the GPO on TI TPS65086x PMICs.
1378
1379config GPIO_TPS65218
1380	tristate "TPS65218 GPIO"
1381	depends on MFD_TPS65218
1382	help
1383	  Select this option to enable GPIO driver for the TPS65218
1384	  chip family.
1385
1386config GPIO_TPS6586X
1387	bool "TPS6586X GPIO"
1388	depends on MFD_TPS6586X
1389	help
1390	  Select this option to enable GPIO driver for the TPS6586X
1391	  chip family.
1392
1393config GPIO_TPS65910
1394	bool "TPS65910 GPIO"
1395	depends on MFD_TPS65910
1396	help
1397	  Select this option to enable GPIO driver for the TPS65910
1398	  chip family.
1399
1400config GPIO_TPS65912
1401	tristate "TI TPS65912 GPIO"
1402	depends on MFD_TPS65912
1403	help
1404	  This driver supports TPS65912 GPIO chip.
1405
1406config GPIO_TPS68470
1407	tristate "TPS68470 GPIO"
1408	depends on INTEL_SKL_INT3472
1409	help
1410	  Select this option to enable GPIO driver for the TPS68470
1411	  chip family.
1412	  There are 7 GPIOs and few sensor-related GPIOs supported
1413	  by the TPS68470. While the 7 GPIOs can be configured as
1414	  input or output as appropriate, the sensor related GPIOs
1415	  are "output only" GPIOs.
1416
1417config GPIO_TQMX86
1418	tristate "TQ-Systems QTMX86 GPIO"
1419	depends on MFD_TQMX86 || COMPILE_TEST
1420	depends on HAS_IOPORT_MAP
1421	select GPIOLIB_IRQCHIP
1422	help
1423	  This driver supports GPIO on the TQMX86 IO controller.
1424
1425config GPIO_TWL4030
1426	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1427	depends on TWL4030_CORE
1428	help
1429	  Say yes here to access the GPIO signals of various multi-function
1430	  power management chips from Texas Instruments.
1431
1432config GPIO_TWL6040
1433	tristate "TWL6040 GPO"
1434	depends on TWL6040_CORE
1435	help
1436	  Say yes here to access the GPO signals of twl6040
1437	  audio chip from Texas Instruments.
1438
1439config GPIO_UCB1400
1440	tristate "Philips UCB1400 GPIO"
1441	depends on UCB1400_CORE
1442	help
1443	  This enables support for the Philips UCB1400 GPIO pins.
1444	  The UCB1400 is an AC97 audio codec.
1445
1446config GPIO_WHISKEY_COVE
1447	tristate "GPIO support for Whiskey Cove PMIC"
1448	depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1449	select GPIOLIB_IRQCHIP
1450	help
1451	  Support for GPIO pins on Whiskey Cove PMIC.
1452
1453	  Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1454	  inside.
1455
1456	  This driver can also be built as a module. If so, the module will be
1457	  called gpio-wcove.
1458
1459config GPIO_WM831X
1460	tristate "WM831x GPIOs"
1461	depends on MFD_WM831X
1462	help
1463	  Say yes here to access the GPIO signals of WM831x power management
1464	  chips from Wolfson Microelectronics.
1465
1466config GPIO_WM8350
1467	tristate "WM8350 GPIOs"
1468	depends on MFD_WM8350
1469	help
1470	  Say yes here to access the GPIO signals of WM8350 power management
1471	  chips from Wolfson Microelectronics.
1472
1473config GPIO_WM8994
1474	tristate "WM8994 GPIOs"
1475	depends on MFD_WM8994
1476	help
1477	  Say yes here to access the GPIO signals of WM8994 audio hub
1478	  CODECs from Wolfson Microelectronics.
1479
1480endmenu
1481
1482menu "PCI GPIO expanders"
1483	depends on PCI
1484
1485config GPIO_AMD8111
1486	tristate "AMD 8111 GPIO driver"
1487	depends on X86 || COMPILE_TEST
1488	depends on HAS_IOPORT_MAP
1489	help
1490	  The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1491
1492	  Note that usually system firmware/ACPI handles GPIO pins on their
1493	  own and users might easily break their systems with uncareful usage
1494	  of this driver!
1495
1496	  If unsure, say N
1497
1498config GPIO_BT8XX
1499	tristate "BT8XX GPIO abuser"
1500	depends on VIDEO_BT848=n
1501	help
1502	  The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1503	  as a cheap PCI GPIO card.
1504
1505	  This chip can be found on Miro, Hauppauge and STB TV-cards.
1506
1507	  The card needs to be physically altered for using it as a
1508	  GPIO card. For more information on how to build a GPIO card
1509	  from a BT8xx TV card, see the documentation file at
1510	  Documentation/driver-api/gpio/bt8xxgpio.rst
1511
1512	  If unsure, say N.
1513
1514config GPIO_MERRIFIELD
1515	tristate "Intel Merrifield GPIO support"
1516	depends on X86_INTEL_MID
1517	select GPIOLIB_IRQCHIP
1518	help
1519	  Say Y here to support Intel Merrifield GPIO.
1520
1521config GPIO_MLXBF
1522	tristate "Mellanox BlueField SoC GPIO"
1523	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1524	select GPIO_GENERIC
1525	help
1526	  Say Y here if you want GPIO support on Mellanox BlueField SoC.
1527
1528config GPIO_MLXBF2
1529	tristate "Mellanox BlueField 2 SoC GPIO"
1530	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1531	select GPIO_GENERIC
1532	help
1533	  Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1534
1535config GPIO_ML_IOH
1536	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1537	depends on X86 || COMPILE_TEST
1538	select GENERIC_IRQ_CHIP
1539	help
1540	  ML7213 is companion chip for Intel Atom E6xx series.
1541	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1542	  Hub) which is for IVI (In-Vehicle Infotainment) use.
1543	  This driver can access the IOH's GPIO device.
1544
1545config GPIO_PCH
1546	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1547	depends on X86_32 || MIPS || COMPILE_TEST
1548	select GENERIC_IRQ_CHIP
1549	help
1550	  This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1551	  which is an IOH (Input/Output Hub) for x86 embedded processor.
1552	  This driver can access PCH GPIO device.
1553
1554	  This driver also can be used for LAPIS Semiconductor IOH (Input/
1555	  Output Hub), ML7223 and ML7831.
1556	  ML7223 IOH is for MP (Media Phone) use.
1557	  ML7831 IOH is for general purpose use.
1558	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1559	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1560
1561config GPIO_PCI_IDIO_16
1562	tristate "ACCES PCI-IDIO-16 GPIO support"
1563	select GPIOLIB_IRQCHIP
1564	help
1565	  Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1566	  generated when any of the inputs change state (low to high or high to
1567	  low). Input filter control is not supported by this driver, and the
1568	  input filters are deactivated by this driver.
1569
1570config GPIO_PCIE_IDIO_24
1571	tristate "ACCES PCIe-IDIO-24 GPIO support"
1572	select GPIOLIB_IRQCHIP
1573	help
1574	  Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1575	  PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1576	  when any of the inputs change state (low to high or high to low).
1577	  Input filter control is not supported by this driver, and the input
1578	  filters are deactivated by this driver.
1579
1580config GPIO_RDC321X
1581	tristate "RDC R-321x GPIO support"
1582	select MFD_CORE
1583	select MFD_RDC321X
1584	help
1585	  Support for the RDC R321x SoC GPIOs over southbridge
1586	  PCI configuration space.
1587
1588config GPIO_SODAVILLE
1589	bool "Intel Sodaville GPIO support"
1590	depends on X86 && OF
1591	select GPIO_GENERIC
1592	select GENERIC_IRQ_CHIP
1593	help
1594	  Say Y here to support Intel Sodaville GPIO.
1595
1596endmenu
1597
1598menu "SPI GPIO expanders"
1599	depends on SPI_MASTER
1600
1601config GPIO_74X164
1602	tristate "74x164 serial-in/parallel-out 8-bits shift register"
1603	depends on OF_GPIO
1604	help
1605	  Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1606	  shift registers. This driver can be used to provide access
1607	  to more GPIO outputs.
1608
1609config GPIO_MAX3191X
1610	tristate "Maxim MAX3191x industrial serializer"
1611	select CRC8
1612	help
1613	  GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1614	  MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1615	  chip to make 8 digital 24V inputs available via SPI.  Supports
1616	  CRC checksums to guard against electromagnetic interference,
1617	  as well as undervoltage and overtemperature detection.
1618
1619config GPIO_MAX7301
1620	tristate "Maxim MAX7301 GPIO expander"
1621	select GPIO_MAX730X
1622	help
1623	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1624
1625config GPIO_MC33880
1626	tristate "Freescale MC33880 high-side/low-side switch"
1627	help
1628	  SPI driver for Freescale MC33880 high-side/low-side switch.
1629	  This provides GPIO interface supporting inputs and outputs.
1630
1631config GPIO_PISOSR
1632	tristate "Generic parallel-in/serial-out shift register"
1633	help
1634	  GPIO driver for SPI compatible parallel-in/serial-out shift
1635	  registers. These are input only devices.
1636
1637config GPIO_XRA1403
1638	tristate "EXAR XRA1403 16-bit GPIO expander"
1639	select REGMAP_SPI
1640	help
1641	  GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1642
1643config GPIO_MOXTET
1644	tristate "Turris Mox Moxtet bus GPIO expander"
1645	depends on MOXTET
1646	help
1647	  Say yes here if you are building for the Turris Mox router.
1648	  This is the driver needed for configuring the GPIOs via the Moxtet
1649	  bus. For example the Mox module with SFP cage needs this driver
1650	  so that phylink can use corresponding GPIOs.
1651
1652endmenu
1653
1654menu "USB GPIO expanders"
1655	depends on USB
1656
1657config GPIO_VIPERBOARD
1658	tristate "Viperboard GPIO a & b support"
1659	depends on MFD_VIPERBOARD
1660	help
1661	  Say yes here to access the GPIO signals of Nano River
1662	  Technologies Viperboard. There are two GPIO chips on the
1663	  board: gpioa and gpiob.
1664	  See viperboard API specification and Nano
1665	  River Tech's viperboard.h for detailed meaning
1666	  of the module parameters.
1667
1668endmenu
1669
1670menu "Virtual GPIO drivers"
1671
1672config GPIO_AGGREGATOR
1673	tristate "GPIO Aggregator"
1674	help
1675	  Say yes here to enable the GPIO Aggregator, which provides a way to
1676	  aggregate existing GPIO lines into a new virtual GPIO chip.
1677	  This can serve the following purposes:
1678	    - Assign permissions for a collection of GPIO lines to a user,
1679	    - Export a collection of GPIO lines to a virtual machine,
1680	    - Provide a generic driver for a GPIO-operated device in an
1681	      industrial control context, to be operated from userspace using
1682	      the GPIO chardev interface.
1683
1684config GPIO_MOCKUP
1685	tristate "GPIO Testing Driver"
1686	select IRQ_SIM
1687	help
1688	  This enables GPIO Testing driver, which provides a way to test GPIO
1689	  subsystem through sysfs (or char device) and debugfs.
1690	  User could use it through the script in
1691	  tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1692	  it.
1693
1694config GPIO_VIRTIO
1695	tristate "VirtIO GPIO support"
1696	depends on VIRTIO
1697	select GPIOLIB_IRQCHIP
1698	help
1699	  Say Y here to enable guest support for virtio-based GPIO controllers.
1700
1701	  These virtual GPIOs can be routed to real GPIOs or attached to
1702	  simulators on the host (like QEMU).
1703
1704config GPIO_SIM
1705	tristate "GPIO Simulator Module"
1706	select IRQ_SIM
1707	select CONFIGFS_FS
1708	help
1709	  This enables the GPIO simulator - a configfs-based GPIO testing
1710	  driver.
1711
1712endmenu
1713
1714endif
1715