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1#
2# GPIO infrastructure and drivers
3#
4
5config ARCH_HAVE_CUSTOM_GPIO_H
6 bool
7 help
8 Selecting this config option from the architecture Kconfig allows
9 the architecture to provide a custom asm/gpio.h implementation
10 overriding the default implementations. New uses of this are
11 strongly discouraged.
12
13config ARCH_WANT_OPTIONAL_GPIOLIB
14 bool
15 help
16 Select this config option from the architecture Kconfig, if
17 it is possible to use gpiolib on the architecture, but let the
18 user decide whether to actually build it or not.
19 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
20 not depend on GPIOs being available, but rather let the user
21 decide whether he needs it or not.
22
23config ARCH_REQUIRE_GPIOLIB
24 bool
25 select GPIOLIB
26 help
27 Platforms select gpiolib if they use this infrastructure
28 for all their GPIOs, usually starting with ones integrated
29 into SOC processors.
30 Selecting this from the architecture code will cause the gpiolib
31 code to always get built in.
32
33
34menuconfig GPIOLIB
35 bool "GPIO Support"
36 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
37 help
38 This enables GPIO support through the generic GPIO library.
39 You only need to enable this, if you also want to enable
40 one or more of the GPIO drivers below.
41
42 If unsure, say N.
43
44if GPIOLIB
45
46config GPIO_DEVRES
47 def_bool y
48 depends on HAS_IOMEM
49
50config OF_GPIO
51 def_bool y
52 depends on OF
53
54config GPIO_ACPI
55 def_bool y
56 depends on ACPI
57
58config GPIOLIB_IRQCHIP
59 bool
60
61config DEBUG_GPIO
62 bool "Debug GPIO calls"
63 depends on DEBUG_KERNEL
64 help
65 Say Y here to add some extra checks and diagnostics to GPIO calls.
66 These checks help ensure that GPIOs have been properly initialized
67 before they are used, and that sleeping calls are not made from
68 non-sleeping contexts. They can make bitbanged serial protocols
69 slower. The diagnostics help catch the type of setup errors
70 that are most common when setting up new platforms or boards.
71
72config GPIO_SYSFS
73 bool "/sys/class/gpio/... (sysfs interface)"
74 depends on SYSFS
75 help
76 Say Y here to add a sysfs interface for GPIOs.
77
78 This is mostly useful to work around omissions in a system's
79 kernel support. Those are common in custom and semicustom
80 hardware assembled using standard kernels with a minimum of
81 custom patches. In those cases, userspace code may import
82 a given GPIO from the kernel, if no kernel driver requested it.
83
84 Kernel drivers may also request that a particular GPIO be
85 exported to userspace; this can be useful when debugging.
86
87config GPIO_GENERIC
88 tristate
89
90# put drivers in the right section, in alphabetical order
91
92config GPIO_DA9052
93 tristate "Dialog DA9052 GPIO"
94 depends on PMIC_DA9052
95 help
96 Say yes here to enable the GPIO driver for the DA9052 chip.
97
98config GPIO_DA9055
99 tristate "Dialog Semiconductor DA9055 GPIO"
100 depends on MFD_DA9055
101 help
102 Say yes here to enable the GPIO driver for the DA9055 chip.
103
104 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
105 be controller by this driver.
106
107 If driver is built as a module it will be called gpio-da9055.
108
109config GPIO_MAX730X
110 tristate
111
112comment "Memory mapped GPIO drivers:"
113
114config GPIO_CLPS711X
115 tristate "CLPS711X GPIO support"
116 depends on ARCH_CLPS711X || COMPILE_TEST
117 select GPIO_GENERIC
118 help
119 Say yes here to support GPIO on CLPS711X SoCs.
120
121config GPIO_DAVINCI
122 bool "TI Davinci/Keystone GPIO support"
123 default y if ARCH_DAVINCI
124 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
125 help
126 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
127
128config GPIO_GENERIC_PLATFORM
129 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
130 select GPIO_GENERIC
131 help
132 Say yes here to support basic platform_device memory-mapped GPIO controllers.
133
134config GPIO_DWAPB
135 tristate "Synopsys DesignWare APB GPIO driver"
136 select GPIO_GENERIC
137 select GENERIC_IRQ_CHIP
138 depends on OF_GPIO
139 help
140 Say Y or M here to build support for the Synopsys DesignWare APB
141 GPIO block.
142
143config GPIO_IT8761E
144 tristate "IT8761E GPIO support"
145 depends on X86 # unconditional access to IO space.
146 help
147 Say yes here to support GPIO functionality of IT8761E super I/O chip.
148
149config GPIO_EM
150 tristate "Emma Mobile GPIO"
151 depends on ARM && OF_GPIO
152 help
153 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
154
155config GPIO_EP93XX
156 def_bool y
157 depends on ARCH_EP93XX
158 select GPIO_GENERIC
159
160config GPIO_ZEVIO
161 bool "LSI ZEVIO SoC memory mapped GPIOs"
162 depends on ARM && OF_GPIO
163 help
164 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
165
166config GPIO_MM_LANTIQ
167 bool "Lantiq Memory mapped GPIOs"
168 depends on LANTIQ && SOC_XWAY
169 help
170 This enables support for memory mapped GPIOs on the External Bus Unit
171 (EBU) found on Lantiq SoCs. The gpios are output only as they are
172 created by attaching a 16bit latch to the bus.
173
174config GPIO_F7188X
175 tristate "F71882FG and F71889F GPIO support"
176 depends on X86
177 help
178 This option enables support for GPIOs found on Fintek Super-I/O
179 chips F71882FG and F71889F.
180
181 To compile this driver as a module, choose M here: the module will
182 be called f7188x-gpio.
183
184config GPIO_MOXART
185 bool "MOXART GPIO support"
186 depends on ARCH_MOXART
187 help
188 Select this option to enable GPIO driver for
189 MOXA ART SoC devices.
190
191config GPIO_MPC5200
192 def_bool y
193 depends on PPC_MPC52xx
194
195config GPIO_MPC8XXX
196 bool "MPC512x/MPC8xxx GPIO support"
197 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
198 FSL_SOC_BOOKE || PPC_86xx
199 help
200 Say Y here if you're going to use hardware that connects to the
201 MPC512x/831x/834x/837x/8572/8610 GPIOs.
202
203config GPIO_MSM_V1
204 tristate "Qualcomm MSM GPIO v1"
205 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
206 help
207 Say yes here to support the GPIO interface on ARM v6 based
208 Qualcomm MSM chips. Most of the pins on the MSM can be
209 selected for GPIO, and are controlled by this driver.
210
211config GPIO_MSM_V2
212 tristate "Qualcomm MSM GPIO v2"
213 depends on GPIOLIB && OF && ARCH_QCOM
214 help
215 Say yes here to support the GPIO interface on ARM v7 based
216 Qualcomm MSM chips. Most of the pins on the MSM can be
217 selected for GPIO, and are controlled by this driver.
218
219config GPIO_MVEBU
220 def_bool y
221 depends on PLAT_ORION
222 depends on OF
223 select GPIO_GENERIC
224 select GENERIC_IRQ_CHIP
225
226config GPIO_MXC
227 def_bool y
228 depends on ARCH_MXC
229 select GPIO_GENERIC
230 select GENERIC_IRQ_CHIP
231
232config GPIO_MXS
233 def_bool y
234 depends on ARCH_MXS
235 select GPIO_GENERIC
236 select GENERIC_IRQ_CHIP
237
238config GPIO_OCTEON
239 tristate "Cavium OCTEON GPIO"
240 depends on GPIOLIB && CAVIUM_OCTEON_SOC
241 default y
242 help
243 Say yes here to support the on-chip GPIO lines on the OCTEON
244 family of SOCs.
245
246config GPIO_PL061
247 bool "PrimeCell PL061 GPIO support"
248 depends on ARM_AMBA
249 select IRQ_DOMAIN
250 select GPIOLIB_IRQCHIP
251 help
252 Say yes here to support the PrimeCell PL061 GPIO device
253
254config GPIO_PXA
255 bool "PXA GPIO support"
256 depends on ARCH_PXA || ARCH_MMP
257 help
258 Say yes here to support the PXA GPIO device
259
260config GPIO_RCAR
261 tristate "Renesas R-Car GPIO"
262 depends on ARM
263 help
264 Say yes here to support GPIO on Renesas R-Car SoCs.
265
266config GPIO_SAMSUNG
267 bool
268 depends on PLAT_SAMSUNG
269 help
270 Legacy GPIO support. Use only for platforms without support for
271 pinctrl.
272
273config GPIO_SCH311X
274 tristate "SMSC SCH311x SuperI/O GPIO"
275 help
276 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
277 SCH3116 "Super I/O" chipsets.
278
279 To compile this driver as a module, choose M here: the module will
280 be called gpio-sch311x.
281
282config GPIO_SPEAR_SPICS
283 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
284 depends on PLAT_SPEAR
285 select GENERIC_IRQ_CHIP
286 help
287 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
288
289config GPIO_STA2X11
290 bool "STA2x11/ConneXt GPIO support"
291 depends on MFD_STA2X11
292 select GENERIC_IRQ_CHIP
293 help
294 Say yes here to support the STA2x11/ConneXt GPIO device.
295 The GPIO module has 128 GPIO pins with alternate functions.
296
297config GPIO_SYSCON
298 tristate "GPIO based on SYSCON"
299 depends on MFD_SYSCON && OF
300 help
301 Say yes here to support GPIO functionality though SYSCON driver.
302
303config GPIO_TS5500
304 tristate "TS-5500 DIO blocks and compatibles"
305 depends on TS5500 || COMPILE_TEST
306 help
307 This driver supports Digital I/O exposed by pin blocks found on some
308 Technologic Systems platforms. It includes, but is not limited to, 3
309 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
310 LCD port.
311
312config GPIO_TZ1090
313 bool "Toumaz Xenif TZ1090 GPIO support"
314 depends on SOC_TZ1090
315 select GENERIC_IRQ_CHIP
316 default y
317 help
318 Say yes here to support Toumaz Xenif TZ1090 GPIOs.
319
320config GPIO_TZ1090_PDC
321 bool "Toumaz Xenif TZ1090 PDC GPIO support"
322 depends on SOC_TZ1090
323 default y
324 help
325 Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
326
327config GPIO_XILINX
328 bool "Xilinx GPIO support"
329 depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
330 help
331 Say yes here to support the Xilinx FPGA GPIO device
332
333config GPIO_XTENSA
334 bool "Xtensa GPIO32 support"
335 depends on XTENSA
336 depends on HAVE_XTENSA_GPIO32
337 depends on !SMP
338 help
339 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
340 and EXPSTATE (output) ports
341
342config GPIO_VR41XX
343 tristate "NEC VR4100 series General-purpose I/O Uint support"
344 depends on CPU_VR41XX
345 help
346 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
347
348config GPIO_SCH
349 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
350 depends on PCI && X86
351 select MFD_CORE
352 select LPC_SCH
353 help
354 Say yes here to support GPIO interface on Intel Poulsbo SCH,
355 Intel Tunnel Creek processor or Intel Centerton processor.
356 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
357 powered by the core power rail and are turned off during sleep
358 modes (S3 and higher). The remaining four GPIOs are powered by
359 the Intel SCH suspend power supply. These GPIOs remain
360 active during S3. The suspend powered GPIOs can be used to wake the
361 system from the Suspend-to-RAM state.
362 The Intel Tunnel Creek processor has 5 GPIOs powered by the
363 core power rail and 9 from suspend power supply.
364 The Intel Centerton processor has a total of 30 GPIO pins.
365 Twenty-one are powered by the core power rail and 9 from the
366 suspend power supply.
367
368config GPIO_ICH
369 tristate "Intel ICH GPIO"
370 depends on PCI && X86
371 select MFD_CORE
372 select 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 (eg Ibex Peak), Series 6/C200 (eg
377 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
378
379 If unsure, say N.
380
381config GPIO_IOP
382 tristate "Intel IOP GPIO"
383 depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
384 help
385 Say yes here to support the GPIO functionality of a number of Intel
386 IOP32X or IOP33X.
387
388 If unsure, say N.
389
390config GPIO_VX855
391 tristate "VIA VX855/VX875 GPIO"
392 depends on PCI
393 select MFD_CORE
394 select MFD_VX855
395 help
396 Support access to the VX855/VX875 GPIO lines through the gpio library.
397
398 This driver provides common support for accessing the device,
399 additional drivers must be enabled in order to use the
400 functionality of the device.
401
402config GPIO_GE_FPGA
403 bool "GE FPGA based GPIO"
404 depends on GE_FPGA
405 help
406 Support for common GPIO functionality provided on some GE Single Board
407 Computers.
408
409 This driver provides basic support (configure as input or output, read
410 and write pin state) for GPIO implemented in a number of GE single
411 board computers.
412
413config GPIO_LYNXPOINT
414 tristate "Intel Lynxpoint GPIO support"
415 depends on ACPI && X86
416 select IRQ_DOMAIN
417 help
418 driver for GPIO functionality on Intel Lynxpoint PCH chipset
419 Requires ACPI device enumeration code to set up a platform device.
420
421config GPIO_GRGPIO
422 tristate "Aeroflex Gaisler GRGPIO support"
423 depends on OF
424 select GPIO_GENERIC
425 select IRQ_DOMAIN
426 help
427 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
428 VHDL IP core library.
429
430config GPIO_TB10X
431 bool
432 select GENERIC_IRQ_CHIP
433 select OF_GPIO
434
435comment "I2C GPIO expanders:"
436
437config GPIO_ARIZONA
438 tristate "Wolfson Microelectronics Arizona class devices"
439 depends on MFD_ARIZONA
440 help
441 Support for GPIOs on Wolfson Arizona class devices.
442
443config GPIO_LP3943
444 tristate "TI/National Semiconductor LP3943 GPIO expander"
445 depends on MFD_LP3943
446 help
447 GPIO driver for LP3943 MFD.
448 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
449 Open drain outputs are required for this usage.
450
451config GPIO_MAX7300
452 tristate "Maxim MAX7300 GPIO expander"
453 depends on I2C
454 select GPIO_MAX730X
455 help
456 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
457
458config GPIO_MAX732X
459 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
460 depends on I2C
461 help
462 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
463 Port Expanders. Each IO port on these chips has a fixed role of
464 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
465 Input and Output (designed by 'P'). The combinations are listed
466 below:
467
468 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
469 max7322 (4I4O), max7323 (4P4O)
470
471 16 bits: max7324 (8I8O), max7325 (8P8O),
472 max7326 (4I12O), max7327 (4P12O)
473
474 Board setup code must specify the model to use, and the start
475 number for these GPIOs.
476
477config GPIO_MAX732X_IRQ
478 bool "Interrupt controller support for MAX732x"
479 depends on GPIO_MAX732X=y
480 help
481 Say yes here to enable the max732x to be used as an interrupt
482 controller. It requires the driver to be built in the kernel.
483
484config GPIO_MC9S08DZ60
485 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
486 depends on I2C=y && MACH_MX35_3DS
487 help
488 Select this to enable the MC9S08DZ60 GPIO driver
489
490config GPIO_PCA953X
491 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
492 depends on I2C
493 help
494 Say yes here to provide access to several register-oriented
495 SMBus I/O expanders, made mostly by NXP or TI. Compatible
496 models include:
497
498 4 bits: pca9536, pca9537
499
500 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
501 pca9556, pca9557, pca9574, tca6408, xra1202
502
503 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
504 tca6416
505
506 24 bits: tca6424
507
508 40 bits: pca9505, pca9698
509
510config GPIO_PCA953X_IRQ
511 bool "Interrupt controller support for PCA953x"
512 depends on GPIO_PCA953X=y
513 help
514 Say yes here to enable the pca953x to be used as an interrupt
515 controller. It requires the driver to be built in the kernel.
516
517config GPIO_PCF857X
518 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
519 depends on I2C
520 select IRQ_DOMAIN
521 help
522 Say yes here to provide access to most "quasi-bidirectional" I2C
523 GPIO expanders used for additional digital outputs or inputs.
524 Most of these parts are from NXP, though TI is a second source for
525 some of them. Compatible models include:
526
527 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
528 pca9670, pca9672, pca9674, pca9674a,
529 max7328, max7329
530
531 16 bits: pcf8575, pcf8575c, pca8575,
532 pca9671, pca9673, pca9675
533
534 Your board setup code will need to declare the expanders in
535 use, and assign numbers to the GPIOs they expose. Those GPIOs
536 can then be used from drivers and other kernel code, just like
537 other GPIOs, but only accessible from task contexts.
538
539 This driver provides an in-kernel interface to those GPIOs using
540 platform-neutral GPIO calls.
541
542config GPIO_RC5T583
543 bool "RICOH RC5T583 GPIO"
544 depends on MFD_RC5T583
545 help
546 Select this option to enable GPIO driver for the Ricoh RC5T583
547 chip family.
548 This driver provides the support for driving/reading the gpio pins
549 of RC5T583 device through standard gpio library.
550
551config GPIO_SX150X
552 bool "Semtech SX150x I2C GPIO expander"
553 depends on I2C=y
554 default n
555 help
556 Say yes here to provide support for Semtech SX150-series I2C
557 GPIO expanders. Compatible models include:
558
559 8 bits: sx1508q
560 16 bits: sx1509q
561
562config GPIO_STMPE
563 bool "STMPE GPIOs"
564 depends on MFD_STMPE
565 help
566 This enables support for the GPIOs found on the STMPE I/O
567 Expanders.
568
569config GPIO_STP_XWAY
570 bool "XWAY STP GPIOs"
571 depends on SOC_XWAY
572 help
573 This enables support for the Serial To Parallel (STP) unit found on
574 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
575 that can be up to 24 bit. This peripheral is aimed at driving leds.
576 Some of the gpios/leds can be auto updated by the soc with dsl and
577 phy status.
578
579config GPIO_TC3589X
580 bool "TC3589X GPIOs"
581 depends on MFD_TC3589X
582 help
583 This enables support for the GPIOs found on the TC3589X
584 I/O Expander.
585
586config GPIO_TPS65912
587 tristate "TI TPS65912 GPIO"
588 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
589 help
590 This driver supports TPS65912 gpio chip
591
592config GPIO_TWL4030
593 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
594 depends on TWL4030_CORE
595 help
596 Say yes here to access the GPIO signals of various multi-function
597 power management chips from Texas Instruments.
598
599config GPIO_TWL6040
600 tristate "TWL6040 GPO"
601 depends on TWL6040_CORE
602 help
603 Say yes here to access the GPO signals of twl6040
604 audio chip from Texas Instruments.
605
606config GPIO_WM831X
607 tristate "WM831x GPIOs"
608 depends on MFD_WM831X
609 help
610 Say yes here to access the GPIO signals of WM831x power management
611 chips from Wolfson Microelectronics.
612
613config GPIO_WM8350
614 tristate "WM8350 GPIOs"
615 depends on MFD_WM8350
616 help
617 Say yes here to access the GPIO signals of WM8350 power management
618 chips from Wolfson Microelectronics.
619
620config GPIO_WM8994
621 tristate "WM8994 GPIOs"
622 depends on MFD_WM8994
623 help
624 Say yes here to access the GPIO signals of WM8994 audio hub
625 CODECs from Wolfson Microelectronics.
626
627config GPIO_ADP5520
628 tristate "GPIO Support for ADP5520 PMIC"
629 depends on PMIC_ADP5520
630 help
631 This option enables support for on-chip GPIO found
632 on Analog Devices ADP5520 PMICs.
633
634config GPIO_ADP5588
635 tristate "ADP5588 I2C GPIO expander"
636 depends on I2C
637 help
638 This option enables support for 18 GPIOs found
639 on Analog Devices ADP5588 GPIO Expanders.
640
641config GPIO_ADP5588_IRQ
642 bool "Interrupt controller support for ADP5588"
643 depends on GPIO_ADP5588=y
644 help
645 Say yes here to enable the adp5588 to be used as an interrupt
646 controller. It requires the driver to be built in the kernel.
647
648config GPIO_ADNP
649 tristate "Avionic Design N-bit GPIO expander"
650 depends on I2C && OF_GPIO
651 help
652 This option enables support for N GPIOs found on Avionic Design
653 I2C GPIO expanders. The register space will be extended by powers
654 of two, so the controller will need to accommodate for that. For
655 example: if a controller provides 48 pins, 6 registers will be
656 enough to represent all pins, but the driver will assume a
657 register layout for 64 pins (8 registers).
658
659comment "PCI GPIO expanders:"
660
661config GPIO_CS5535
662 tristate "AMD CS5535/CS5536 GPIO support"
663 depends on MFD_CS5535
664 help
665 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
666 can be used for quite a number of things. The CS5535/6 is found on
667 AMD Geode and Lemote Yeeloong devices.
668
669 If unsure, say N.
670
671config GPIO_BT8XX
672 tristate "BT8XX GPIO abuser"
673 depends on PCI && VIDEO_BT848=n
674 help
675 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
676 as a cheap PCI GPIO card.
677
678 This chip can be found on Miro, Hauppauge and STB TV-cards.
679
680 The card needs to be physically altered for using it as a
681 GPIO card. For more information on how to build a GPIO card
682 from a BT8xx TV card, see the documentation file at
683 Documentation/bt8xxgpio.txt
684
685 If unsure, say N.
686
687config GPIO_AMD8111
688 tristate "AMD 8111 GPIO driver"
689 depends on PCI
690 help
691 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
692
693 Note, that usually system firmware/ACPI handles GPIO pins on their
694 own and users might easily break their systems with uncarefull usage
695 of this driver!
696
697 If unsure, say N
698
699config GPIO_INTEL_MID
700 bool "Intel Mid GPIO support"
701 depends on PCI && X86
702 select IRQ_DOMAIN
703 help
704 Say Y here to support Intel Mid GPIO.
705
706config GPIO_PCH
707 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
708 depends on PCI && X86
709 select GENERIC_IRQ_CHIP
710 help
711 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
712 which is an IOH(Input/Output Hub) for x86 embedded processor.
713 This driver can access PCH GPIO device.
714
715 This driver also can be used for LAPIS Semiconductor IOH(Input/
716 Output Hub), ML7223 and ML7831.
717 ML7223 IOH is for MP(Media Phone) use.
718 ML7831 IOH is for general purpose use.
719 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
720 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
721
722config GPIO_ML_IOH
723 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
724 depends on PCI
725 select GENERIC_IRQ_CHIP
726 help
727 ML7213 is companion chip for Intel Atom E6xx series.
728 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
729 Hub) which is for IVI(In-Vehicle Infotainment) use.
730 This driver can access the IOH's GPIO device.
731
732config GPIO_SODAVILLE
733 bool "Intel Sodaville GPIO support"
734 depends on X86 && PCI && OF
735 select GPIO_GENERIC
736 select GENERIC_IRQ_CHIP
737 help
738 Say Y here to support Intel Sodaville GPIO.
739
740config GPIO_TIMBERDALE
741 bool "Support for timberdale GPIO IP"
742 depends on MFD_TIMBERDALE && HAS_IOMEM
743 ---help---
744 Add support for the GPIO IP in the timberdale FPGA.
745
746config GPIO_RDC321X
747 tristate "RDC R-321x GPIO support"
748 depends on PCI
749 select MFD_CORE
750 select MFD_RDC321X
751 help
752 Support for the RDC R321x SoC GPIOs over southbridge
753 PCI configuration space.
754
755comment "SPI GPIO expanders:"
756
757config GPIO_MAX7301
758 tristate "Maxim MAX7301 GPIO expander"
759 depends on SPI_MASTER
760 select GPIO_MAX730X
761 help
762 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
763
764config GPIO_MCP23S08
765 tristate "Microchip MCP23xxx I/O expander"
766 depends on OF_GPIO
767 depends on (SPI_MASTER && !I2C) || I2C
768 help
769 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
770 I/O expanders.
771 This provides a GPIO interface supporting inputs and outputs.
772 The I2C versions of the chips can be used as interrupt-controller.
773
774config GPIO_MC33880
775 tristate "Freescale MC33880 high-side/low-side switch"
776 depends on SPI_MASTER
777 help
778 SPI driver for Freescale MC33880 high-side/low-side switch.
779 This provides GPIO interface supporting inputs and outputs.
780
781config GPIO_74X164
782 tristate "74x164 serial-in/parallel-out 8-bits shift register"
783 depends on SPI_MASTER && OF
784 help
785 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
786 shift registers. This driver can be used to provide access
787 to more gpio outputs.
788
789comment "AC97 GPIO expanders:"
790
791config GPIO_UCB1400
792 tristate "Philips UCB1400 GPIO"
793 depends on UCB1400_CORE
794 help
795 This enables support for the Philips UCB1400 GPIO pins.
796 The UCB1400 is an AC97 audio codec.
797
798comment "LPC GPIO expanders:"
799
800config GPIO_KEMPLD
801 tristate "Kontron ETX / COMexpress GPIO"
802 depends on MFD_KEMPLD
803 help
804 This enables support for the PLD GPIO interface on some Kontron ETX
805 and COMexpress (ETXexpress) modules.
806
807 This driver can also be built as a module. If so, the module will be
808 called gpio-kempld.
809
810comment "MODULbus GPIO expanders:"
811
812config GPIO_JANZ_TTL
813 tristate "Janz VMOD-TTL Digital IO Module"
814 depends on MFD_JANZ_CMODIO
815 help
816 This enables support for the Janz VMOD-TTL Digital IO module.
817 This driver provides support for driving the pins in output
818 mode only. Input mode is not supported.
819
820config GPIO_PALMAS
821 bool "TI PALMAS series PMICs GPIO"
822 depends on MFD_PALMAS
823 help
824 Select this option to enable GPIO driver for the TI PALMAS
825 series chip family.
826
827config GPIO_TPS6586X
828 bool "TPS6586X GPIO"
829 depends on MFD_TPS6586X
830 help
831 Select this option to enable GPIO driver for the TPS6586X
832 chip family.
833
834config GPIO_TPS65910
835 bool "TPS65910 GPIO"
836 depends on MFD_TPS65910
837 help
838 Select this option to enable GPIO driver for the TPS65910
839 chip family.
840
841config GPIO_MSIC
842 bool "Intel MSIC mixed signal gpio support"
843 depends on MFD_INTEL_MSIC
844 help
845 Enable support for GPIO on intel MSIC controllers found in
846 intel MID devices
847
848config GPIO_BCM_KONA
849 bool "Broadcom Kona GPIO"
850 depends on OF_GPIO
851 help
852 Turn on GPIO support for Broadcom "Kona" chips.
853
854comment "USB GPIO expanders:"
855
856config GPIO_VIPERBOARD
857 tristate "Viperboard GPIO a & b support"
858 depends on MFD_VIPERBOARD && USB
859 help
860 Say yes here to access the GPIO signals of Nano River
861 Technologies Viperboard. There are two GPIO chips on the
862 board: gpioa and gpiob.
863 See viperboard API specification and Nano
864 River Tech's viperboard.h for detailed meaning
865 of the module parameters.
866
867endif
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
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 select 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
112config GPIO_IDIO_16
113 tristate
114 select REGMAP_IRQ
115 select GPIOLIB_IRQCHIP
116 select GPIO_REGMAP
117 help
118 Enables support for the idio-16 library functions. The idio-16 library
119 provides functions to facilitate communication with devices within the
120 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
121
122 If built as a module its name will be gpio-idio-16.
123
124menu "Memory mapped GPIO drivers"
125 depends on HAS_IOMEM
126
127config GPIO_74XX_MMIO
128 tristate "GPIO driver for 74xx-ICs with MMIO access"
129 depends on OF_GPIO
130 select GPIO_GENERIC
131 help
132 Say yes here to support GPIO functionality for 74xx-compatible ICs
133 with MMIO access. Compatible models include:
134 1 bit: 741G125 (Input), 741G74 (Output)
135 2 bits: 742G125 (Input), 7474 (Output)
136 4 bits: 74125 (Input), 74175 (Output)
137 6 bits: 74365 (Input), 74174 (Output)
138 8 bits: 74244 (Input), 74273 (Output)
139 16 bits: 741624 (Input), 7416374 (Output)
140
141config GPIO_ALTERA
142 tristate "Altera GPIO"
143 depends on OF_GPIO
144 select GPIOLIB_IRQCHIP
145 select OF_GPIO_MM_GPIOCHIP
146 help
147 Say Y or M here to build support for the Altera PIO device.
148
149 If driver is built as a module it will be called gpio-altera.
150
151config GPIO_AMDPT
152 tristate "AMD Promontory GPIO support"
153 depends on ACPI
154 select GPIO_GENERIC
155 help
156 Driver for GPIO functionality on Promontory IOHub.
157 Requires ACPI ASL code to enumerate as a platform device.
158
159config GPIO_ASPEED
160 tristate "Aspeed GPIO support"
161 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
162 select GPIOLIB_IRQCHIP
163 help
164 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
165
166config GPIO_ASPEED_SGPIO
167 bool "Aspeed SGPIO support"
168 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
169 select GPIO_GENERIC
170 select GPIOLIB_IRQCHIP
171 help
172 Say Y here to support Aspeed AST2500 SGPIO functionality.
173
174config GPIO_ATH79
175 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
176 default y if ATH79
177 depends on ATH79 || COMPILE_TEST
178 select GPIO_GENERIC
179 select GPIOLIB_IRQCHIP
180 help
181 Select this option to enable GPIO driver for
182 Atheros AR71XX/AR724X/AR913X SoC devices.
183
184config GPIO_RASPBERRYPI_EXP
185 tristate "Raspberry Pi 3 GPIO Expander"
186 default RASPBERRYPI_FIRMWARE
187 depends on OF_GPIO
188 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
189 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
190 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
191 help
192 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
193 the firmware mailbox to communicate with VideoCore on BCM283x chips.
194
195config GPIO_BCM_KONA
196 bool "Broadcom Kona GPIO"
197 depends on ARCH_BCM_MOBILE || COMPILE_TEST
198 help
199 Turn on GPIO support for Broadcom "Kona" chips.
200
201config GPIO_BCM_XGS_IPROC
202 tristate "BRCM XGS iProc GPIO support"
203 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
204 select GPIO_GENERIC
205 select GPIOLIB_IRQCHIP
206 default ARCH_BCM_IPROC
207 help
208 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
209
210config GPIO_BRCMSTB
211 tristate "BRCMSTB GPIO support"
212 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
213 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
214 select GPIO_GENERIC
215 select IRQ_DOMAIN
216 help
217 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
218
219config GPIO_CADENCE
220 tristate "Cadence GPIO support"
221 depends on OF_GPIO
222 select GPIO_GENERIC
223 select GPIOLIB_IRQCHIP
224 help
225 Say yes here to enable support for Cadence GPIO controller.
226
227config GPIO_CLPS711X
228 tristate "CLPS711X GPIO support"
229 depends on ARCH_CLPS711X || COMPILE_TEST
230 select GPIO_GENERIC
231 help
232 Say yes here to support GPIO on CLPS711X SoCs.
233
234config GPIO_DAVINCI
235 tristate "TI Davinci/Keystone GPIO support"
236 default y if ARCH_DAVINCI
237 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
238 help
239 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
240
241config GPIO_DWAPB
242 tristate "Synopsys DesignWare APB GPIO driver"
243 select GPIO_GENERIC
244 select GPIOLIB_IRQCHIP
245 help
246 Say Y or M here to build support for the Synopsys DesignWare APB
247 GPIO block.
248
249config GPIO_EIC_SPRD
250 tristate "Spreadtrum EIC support"
251 depends on ARCH_SPRD || COMPILE_TEST
252 depends on OF_GPIO
253 select GPIOLIB_IRQCHIP
254 help
255 Say yes here to support Spreadtrum EIC device.
256
257config GPIO_EM
258 tristate "Emma Mobile GPIO"
259 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
260 help
261 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
262
263config GPIO_EN7523
264 tristate "Airoha GPIO support"
265 depends on ARCH_AIROHA
266 default ARCH_AIROHA
267 select GPIO_GENERIC
268 select GPIOLIB_IRQCHIP
269 help
270 Say Y or M here to support the GPIO controller block on the
271 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
272
273config GPIO_EP93XX
274 def_bool y
275 depends on ARCH_EP93XX
276 select GPIO_GENERIC
277 select GPIOLIB_IRQCHIP
278
279config GPIO_EXAR
280 tristate "Support for GPIO pins on XR17V352/354/358"
281 depends on SERIAL_8250_EXAR
282 select REGMAP_MMIO
283 help
284 Selecting this option will enable handling of GPIO pins present
285 on Exar XR17V352/354/358 chips.
286
287config GPIO_GE_FPGA
288 bool "GE FPGA based GPIO"
289 depends on GE_FPGA || COMPILE_TEST
290 select GPIO_GENERIC
291 help
292 Support for common GPIO functionality provided on some GE Single Board
293 Computers.
294
295 This driver provides basic support (configure as input or output, read
296 and write pin state) for GPIO implemented in a number of GE single
297 board computers.
298
299config GPIO_FTGPIO010
300 bool "Faraday FTGPIO010 GPIO"
301 depends on OF_GPIO
302 select GPIO_GENERIC
303 select GPIOLIB_IRQCHIP
304 default (ARCH_GEMINI || ARCH_MOXART)
305 help
306 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
307 Cortina systems Gemini platforms, Moxa ART and others.
308
309config GPIO_GENERIC_PLATFORM
310 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
311 select GPIO_GENERIC
312 help
313 Say yes here to support basic platform_device memory-mapped GPIO controllers.
314
315config GPIO_GRGPIO
316 tristate "Aeroflex Gaisler GRGPIO support"
317 depends on OF_GPIO
318 select GPIO_GENERIC
319 select IRQ_DOMAIN
320 help
321 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
322 VHDL IP core library.
323
324config GPIO_HISI
325 tristate "HiSilicon GPIO controller driver"
326 depends on ARM64 || COMPILE_TEST
327 select GPIO_GENERIC
328 select GPIOLIB_IRQCHIP
329 help
330 Say Y or M here to build support for the HiSilicon GPIO controller
331 driver GPIO block.
332 This GPIO controller supports double-edge interrupt and multi-core
333 concurrent access.
334
335config GPIO_HLWD
336 tristate "Nintendo Wii (Hollywood) GPIO"
337 depends on OF_GPIO
338 select GPIO_GENERIC
339 select GPIOLIB_IRQCHIP
340 help
341 Select this to support the GPIO controller of the Nintendo Wii.
342
343 If unsure, say N.
344
345config GPIO_ICH
346 tristate "Intel ICH GPIO"
347 depends on X86
348 depends on LPC_ICH
349 help
350 Say yes here to support the GPIO functionality of a number of Intel
351 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
352 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
353 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
354
355 If unsure, say N.
356
357config GPIO_IMX_SCU
358 def_bool y
359 depends on IMX_SCU
360
361config GPIO_IXP4XX
362 bool "Intel IXP4xx GPIO"
363 depends on ARCH_IXP4XX
364 depends on OF
365 select GPIO_GENERIC
366 select GPIOLIB_IRQCHIP
367 select IRQ_DOMAIN_HIERARCHY
368 help
369 Say yes here to support the GPIO functionality of a number of Intel
370 IXP4xx series of chips.
371
372 If unsure, say N.
373
374config GPIO_LOGICVC
375 tristate "Xylon LogiCVC GPIO support"
376 depends on MFD_SYSCON && OF
377 help
378 Say yes here to support GPIO functionality of the Xylon LogiCVC
379 programmable logic block.
380
381config GPIO_LOONGSON
382 bool "Loongson-2/3 GPIO support"
383 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
384 help
385 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
386
387config GPIO_LOONGSON_64BIT
388 tristate "Loongson 64 bit GPIO support"
389 depends on LOONGARCH || COMPILE_TEST
390 depends on OF_GPIO
391 select GPIO_GENERIC
392 help
393 Say yes here to support the GPIO functionality of a number of
394 Loongson series of chips. The Loongson GPIO controller supports
395 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
396 the remaining 56 are reused with other functions, with edge or
397 level triggered interrupts.
398
399config GPIO_LPC18XX
400 tristate "NXP LPC18XX/43XX GPIO support"
401 default y if ARCH_LPC18XX
402 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
403 select IRQ_DOMAIN_HIERARCHY
404 help
405 Select this option to enable GPIO driver for
406 NXP LPC18XX/43XX devices.
407
408config GPIO_LPC32XX
409 tristate "NXP LPC32XX GPIO support"
410 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
411 help
412 Select this option to enable GPIO driver for
413 NXP LPC32XX devices.
414
415config GPIO_MB86S7X
416 tristate "GPIO support for Fujitsu MB86S7x Platforms"
417 help
418 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
419
420config GPIO_MENZ127
421 tristate "MEN 16Z127 GPIO support"
422 depends on MCB
423 select GPIO_GENERIC
424 help
425 Say yes here to support the MEN 16Z127 GPIO Controller.
426
427config GPIO_MM_LANTIQ
428 bool "Lantiq Memory mapped GPIOs"
429 depends on LANTIQ && SOC_XWAY
430 select OF_GPIO_MM_GPIOCHIP
431 help
432 This enables support for memory mapped GPIOs on the External Bus Unit
433 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
434 created by attaching a 16-bit latch to the bus.
435
436config GPIO_MPC5200
437 def_bool y
438 depends on PPC_MPC52xx
439 select OF_GPIO_MM_GPIOCHIP
440
441config GPIO_MPC8XXX
442 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
443 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
444 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
445 COMPILE_TEST
446 select GPIO_GENERIC
447 select IRQ_DOMAIN
448 help
449 Say Y here if you're going to use hardware that connects to the
450 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
451
452config GPIO_MT7621
453 bool "Mediatek MT7621 GPIO Support"
454 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
455 depends on OF_GPIO
456 select GPIO_GENERIC
457 select GPIOLIB_IRQCHIP
458 help
459 Say yes here to support the Mediatek MT7621 SoC GPIO device.
460
461config GPIO_MVEBU
462 def_bool y
463 depends on PLAT_ORION || ARCH_MVEBU
464 depends on OF_GPIO
465 select GENERIC_IRQ_CHIP
466 select REGMAP_MMIO
467
468config GPIO_MXC
469 tristate "i.MX GPIO support"
470 depends on ARCH_MXC || COMPILE_TEST
471 select GPIO_GENERIC
472 select GENERIC_IRQ_CHIP
473
474config GPIO_MXS
475 bool "Freescale MXS GPIO support" if COMPILE_TEST
476 depends on ARCH_MXS || COMPILE_TEST
477 default y if ARCH_MXS
478 select GPIO_GENERIC
479 select GENERIC_IRQ_CHIP
480
481config GPIO_NPCM_SGPIO
482 bool "Nuvoton SGPIO support"
483 depends on ARCH_NPCM || COMPILE_TEST
484 select GPIOLIB_IRQCHIP
485 help
486 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
487
488config GPIO_OCTEON
489 tristate "Cavium OCTEON GPIO"
490 depends on CAVIUM_OCTEON_SOC
491 default y
492 help
493 Say yes here to support the on-chip GPIO lines on the OCTEON
494 family of SOCs.
495
496config GPIO_OMAP
497 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
498 default y if ARCH_OMAP
499 depends on ARM
500 select GENERIC_IRQ_CHIP
501 select GPIOLIB_IRQCHIP
502 help
503 Say yes here to enable GPIO support for TI OMAP SoCs.
504
505config GPIO_PL061
506 tristate "PrimeCell PL061 GPIO support"
507 depends on ARM_AMBA
508 select IRQ_DOMAIN
509 select GPIOLIB_IRQCHIP
510 help
511 Say yes here to support the PrimeCell PL061 GPIO device.
512
513config GPIO_PXA
514 bool "PXA GPIO support"
515 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
516 help
517 Say yes here to support the PXA GPIO device.
518
519config GPIO_RCAR
520 tristate "Renesas R-Car and RZ/G GPIO support"
521 depends on ARCH_RENESAS || COMPILE_TEST
522 select GPIOLIB_IRQCHIP
523 help
524 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
525
526config GPIO_RDA
527 bool "RDA Micro GPIO controller support"
528 depends on ARCH_RDA || COMPILE_TEST
529 depends on OF_GPIO
530 select GPIO_GENERIC
531 select GPIOLIB_IRQCHIP
532 help
533 Say Y here to support RDA Micro GPIO controller.
534
535config GPIO_REALTEK_OTTO
536 tristate "Realtek Otto GPIO support"
537 depends on MACH_REALTEK_RTL
538 default MACH_REALTEK_RTL
539 select GPIO_GENERIC
540 select GPIOLIB_IRQCHIP
541 help
542 The GPIO controller on the Otto MIPS platform supports up to two
543 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
544 are grouped in four 8-bit wide ports.
545
546 When built as a module, the module will be called realtek_otto_gpio.
547
548config GPIO_REG
549 bool
550 help
551 A 32-bit single register GPIO fixed in/out implementation. This
552 can be used to represent any register as a set of GPIO signals.
553
554config GPIO_ROCKCHIP
555 tristate "Rockchip GPIO support"
556 depends on ARCH_ROCKCHIP || COMPILE_TEST
557 select GENERIC_IRQ_CHIP
558 select GPIOLIB_IRQCHIP
559 default ARCH_ROCKCHIP
560 help
561 Say yes here to support GPIO on Rockchip SoCs.
562
563config GPIO_RTD
564 tristate "Realtek DHC GPIO support"
565 depends on ARCH_REALTEK
566 default y
567 select GPIOLIB_IRQCHIP
568 help
569 This option enables support for GPIOs found on Realtek DHC(Digital
570 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
571 RTD1319D, RTD1395, RTD1619 and RTD1619B.
572
573 Say yes here to support GPIO functionality and GPIO interrupt on
574 Realtek DHC SoCs.
575
576config GPIO_SAMA5D2_PIOBU
577 tristate "SAMA5D2 PIOBU GPIO support"
578 depends on MFD_SYSCON
579 depends on OF_GPIO
580 depends on ARCH_AT91 || COMPILE_TEST
581 select GPIO_SYSCON
582 help
583 Say yes here to use the PIOBU pins as GPIOs.
584
585 PIOBU pins on the SAMA5D2 can be used as GPIOs.
586 The difference from regular GPIOs is that they
587 maintain their value during backup/self-refresh.
588
589config GPIO_SIFIVE
590 tristate "SiFive GPIO support"
591 depends on OF_GPIO
592 select IRQ_DOMAIN_HIERARCHY
593 select GPIO_GENERIC
594 select GPIOLIB_IRQCHIP
595 select REGMAP_MMIO
596 help
597 Say yes here to support the GPIO device on SiFive SoCs.
598
599config GPIO_SIOX
600 tristate "SIOX GPIO support"
601 depends on SIOX
602 select GPIOLIB_IRQCHIP
603 help
604 Say yes here to support SIOX I/O devices. These are units connected
605 via a SIOX bus and have a number of fixed-direction I/O lines.
606
607config GPIO_SNPS_CREG
608 bool "Synopsys GPIO via CREG (Control REGisters) driver"
609 depends on ARC || COMPILE_TEST
610 depends on OF_GPIO
611 help
612 This driver supports GPIOs via CREG on various Synopsys SoCs.
613 This is a single-register MMIO GPIO driver for complex cases
614 where only several fields in register belong to GPIO lines and
615 each GPIO line owns a field with different length and on/off value.
616
617config GPIO_SPEAR_SPICS
618 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
619 depends on PLAT_SPEAR
620 select GENERIC_IRQ_CHIP
621 help
622 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
623
624config GPIO_SPRD
625 tristate "Spreadtrum GPIO support"
626 depends on ARCH_SPRD || COMPILE_TEST
627 depends on OF_GPIO
628 select GPIOLIB_IRQCHIP
629 help
630 Say yes here to support Spreadtrum GPIO device.
631
632config GPIO_STP_XWAY
633 bool "XWAY STP GPIOs"
634 depends on SOC_XWAY || COMPILE_TEST
635 depends on OF_GPIO
636 help
637 This enables support for the Serial To Parallel (STP) unit found on
638 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
639 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
640 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
641 phy status.
642
643config GPIO_SYSCON
644 tristate "GPIO based on SYSCON"
645 depends on MFD_SYSCON && OF
646 help
647 Say yes here to support GPIO functionality though SYSCON driver.
648
649config GPIO_TANGIER
650 tristate
651 select GPIOLIB_IRQCHIP
652 help
653 GPIO support for Intel Tangier and compatible platforms.
654 Currently supported:
655 - Elkhart Lake
656 - Merrifield
657
658 If built as a module its name will be gpio-tangier.
659
660config GPIO_TB10X
661 bool
662 select GPIO_GENERIC
663 select GENERIC_IRQ_CHIP
664 select OF_GPIO
665
666config GPIO_TEGRA
667 tristate "NVIDIA Tegra GPIO support"
668 default ARCH_TEGRA
669 depends on ARCH_TEGRA || COMPILE_TEST
670 depends on OF_GPIO
671 select GPIOLIB_IRQCHIP
672 select IRQ_DOMAIN_HIERARCHY
673 help
674 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
675
676config GPIO_TEGRA186
677 tristate "NVIDIA Tegra186 GPIO support"
678 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
679 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
680 depends on OF_GPIO
681 select GPIOLIB_IRQCHIP
682 select IRQ_DOMAIN_HIERARCHY
683 help
684 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
685
686config GPIO_TS4800
687 tristate "TS-4800 DIO blocks and compatibles"
688 depends on OF_GPIO
689 depends on SOC_IMX51 || COMPILE_TEST
690 select GPIO_GENERIC
691 help
692 This driver support TS-4800 FPGA GPIO controllers.
693
694config GPIO_THUNDERX
695 tristate "Cavium ThunderX/OCTEON-TX GPIO"
696 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
697 depends on PCI_MSI
698 select GPIOLIB_IRQCHIP
699 select IRQ_DOMAIN_HIERARCHY
700 select IRQ_FASTEOI_HIERARCHY_HANDLERS
701 help
702 Say yes here to support the on-chip GPIO lines on the ThunderX
703 and OCTEON-TX families of SoCs.
704
705config GPIO_UNIPHIER
706 tristate "UniPhier GPIO support"
707 depends on ARCH_UNIPHIER || COMPILE_TEST
708 depends on OF_GPIO
709 select IRQ_DOMAIN_HIERARCHY
710 help
711 Say yes here to support UniPhier GPIOs.
712
713config GPIO_VF610
714 def_bool y
715 depends on ARCH_MXC
716 select GPIOLIB_IRQCHIP
717 help
718 Say yes here to support i.MX or Vybrid vf610 GPIOs.
719
720config GPIO_VISCONTI
721 tristate "Toshiba Visconti GPIO support"
722 depends on ARCH_VISCONTI || COMPILE_TEST
723 depends on OF_GPIO
724 select GPIOLIB_IRQCHIP
725 select GPIO_GENERIC
726 select IRQ_DOMAIN_HIERARCHY
727 help
728 Say yes here to support GPIO on Tohisba Visconti.
729
730config GPIO_WCD934X
731 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
732 depends on MFD_WCD934X && OF_GPIO
733 help
734 This driver is to support GPIO block found on the Qualcomm Technologies
735 Inc WCD9340/WCD9341 Audio Codec.
736
737config GPIO_XGENE
738 bool "APM X-Gene GPIO controller support"
739 depends on ARM64 && OF_GPIO
740 help
741 This driver is to support the GPIO block within the APM X-Gene SoC
742 platform's generic flash controller. The GPIO pins are muxed with
743 the generic flash controller's address and data pins. Say yes
744 here to enable the GFC GPIO functionality.
745
746config GPIO_XGENE_SB
747 tristate "APM X-Gene GPIO standby controller support"
748 depends on (ARCH_XGENE || COMPILE_TEST)
749 select GPIO_GENERIC
750 select GPIOLIB_IRQCHIP
751 select IRQ_DOMAIN_HIERARCHY
752 help
753 This driver supports the GPIO block within the APM X-Gene
754 Standby Domain. Say yes here to enable the GPIO functionality.
755
756config GPIO_XILINX
757 tristate "Xilinx GPIO support"
758 select GPIOLIB_IRQCHIP
759 depends on OF_GPIO
760 help
761 Say yes here to support the Xilinx FPGA GPIO device.
762
763config GPIO_XLP
764 tristate "Cavium ThunderX2 GPIO support"
765 depends on ARCH_THUNDER2 || COMPILE_TEST
766 select GPIOLIB_IRQCHIP
767 help
768 This driver provides support for GPIO interface on Cavium's ThunderX2
769 CN99XX SoCs (Originally from Netlogic XLP).
770
771 If unsure, say N.
772
773config GPIO_XTENSA
774 bool "Xtensa GPIO32 support"
775 depends on XTENSA
776 depends on HAVE_XTENSA_GPIO32
777 depends on !SMP
778 help
779 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
780 and EXPSTATE (output) ports.
781
782config GPIO_ZEVIO
783 bool "LSI ZEVIO SoC memory mapped GPIOs"
784 depends on ARM
785 help
786 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
787
788config GPIO_ZYNQ
789 tristate "Xilinx Zynq GPIO support"
790 depends on ARCH_ZYNQ || ARCH_ZYNQMP
791 select GPIOLIB_IRQCHIP
792 help
793 Say yes here to support Xilinx Zynq GPIO controller.
794
795config GPIO_ZYNQMP_MODEPIN
796 tristate "ZynqMP ps-mode pin GPIO configuration driver"
797 depends on ZYNQMP_FIRMWARE
798 default ZYNQMP_FIRMWARE
799 help
800 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
801 driver.
802
803 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
804 is 4-bits boot mode pins. It sets and gets the status of
805 the ps-mode pin. Every pin can be configured as input/output.
806
807config GPIO_LOONGSON1
808 tristate "Loongson1 GPIO support"
809 depends on MACH_LOONGSON32
810 select GPIO_GENERIC
811 help
812 Say Y or M here to support GPIO on Loongson1 SoCs.
813
814config GPIO_AMD_FCH
815 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
816 help
817 This option enables driver for GPIO on AMD's Fusion Controller Hub,
818 as found on G-series SOCs (e.g. GX-412TC).
819
820 Note: This driver doesn't register itself automatically, as it
821 needs to be provided with platform-specific configuration.
822 (See e.g. CONFIG_PCENGINES_APU2.)
823
824config GPIO_MSC313
825 bool "MStar MSC313 GPIO support"
826 depends on ARCH_MSTARV7
827 default ARCH_MSTARV7
828 select GPIOLIB_IRQCHIP
829 select IRQ_DOMAIN_HIERARCHY
830 help
831 Say Y here to support the main GPIO block on MStar/SigmaStar
832 ARMv7-based SoCs.
833
834config GPIO_IDT3243X
835 tristate "IDT 79RC3243X GPIO support"
836 depends on MIKROTIK_RB532 || COMPILE_TEST
837 select GPIO_GENERIC
838 select GPIOLIB_IRQCHIP
839 help
840 Select this option to enable GPIO driver for
841 IDT 79RC3243X-based devices like Mikrotik RB532.
842
843 To compile this driver as a module, choose M here: the module will
844 be called gpio-idt3243x.
845
846endmenu
847
848menu "Port-mapped I/O GPIO drivers"
849 depends on X86 && HAS_IOPORT # I/O space access
850
851config GPIO_VX855
852 tristate "VIA VX855/VX875 GPIO"
853 depends on PCI
854 select MFD_CORE
855 select MFD_VX855
856 help
857 Support access to the VX855/VX875 GPIO lines through the GPIO library.
858
859 This driver provides common support for accessing the device.
860 Additional drivers must be enabled in order to use the
861 functionality of the device.
862
863config GPIO_I8255
864 tristate
865 select GPIO_REGMAP
866 help
867 Enables support for the i8255 interface library functions. The i8255
868 interface library provides functions to facilitate communication with
869 interfaces compatible with the venerable Intel 8255 Programmable
870 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
871 in the early 1970s but compatible interfaces are nowadays typically
872 found embedded in larger VLSI processing chips and FPGA components.
873
874 If built as a module its name will be gpio-i8255.
875
876config GPIO_104_DIO_48E
877 tristate "ACCES 104-DIO-48E GPIO support"
878 depends on PC104
879 select ISA_BUS_API
880 select REGMAP_MMIO
881 select REGMAP_IRQ
882 select GPIOLIB_IRQCHIP
883 select GPIO_I8255
884 select I8254
885 help
886 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
887 104-DIO-24E). The base port addresses for the devices may be
888 configured via the base module parameter. The interrupt line numbers
889 for the devices may be configured via the irq module parameter.
890
891config GPIO_104_IDIO_16
892 tristate "ACCES 104-IDIO-16 GPIO support"
893 depends on PC104
894 select ISA_BUS_API
895 select REGMAP_MMIO
896 select GPIO_IDIO_16
897 help
898 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
899 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
900 base port addresses for the devices may be configured via the base
901 module parameter. The interrupt line numbers for the devices may be
902 configured via the irq module parameter.
903
904config GPIO_104_IDI_48
905 tristate "ACCES 104-IDI-48 GPIO support"
906 depends on PC104
907 select ISA_BUS_API
908 select REGMAP_MMIO
909 select REGMAP_IRQ
910 select GPIOLIB_IRQCHIP
911 select GPIO_REGMAP
912 help
913 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
914 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
915 the devices may be configured via the base module parameter. The
916 interrupt line numbers for the devices may be configured via the irq
917 module parameter.
918
919config GPIO_F7188X
920 tristate "Fintek and Nuvoton Super-I/O GPIO support"
921 help
922 This option enables support for GPIOs found on Fintek Super-I/O
923 chips F71869, F71869A, F71882FG, F71889F and F81866.
924 As well as Nuvoton Super-I/O chip NCT6126D.
925
926 To compile this driver as a module, choose M here: the module will
927 be called f7188x-gpio.
928
929config GPIO_GPIO_MM
930 tristate "Diamond Systems GPIO-MM GPIO support"
931 depends on PC104
932 select ISA_BUS_API
933 select REGMAP_MMIO
934 select GPIO_I8255
935 help
936 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
937
938 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
939 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
940 support for these 48 channels of digital I/O.
941
942 The base port addresses for the devices may be configured via the base
943 array module parameter.
944
945config GPIO_IT87
946 tristate "IT87xx GPIO support"
947 help
948 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
949
950 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
951 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
952 well.
953
954 To compile this driver as a module, choose M here: the module will
955 be called gpio_it87.
956
957config GPIO_SCH
958 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
959 depends on (X86 || COMPILE_TEST) && ACPI
960 depends on LPC_SCH
961 select GPIOLIB_IRQCHIP
962 help
963 Say yes here to support GPIO interface on Intel Poulsbo SCH,
964 Intel Tunnel Creek processor, Intel Centerton processor or
965 Intel Quark X1000 SoC.
966
967 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
968 powered by the core power rail and are turned off during sleep
969 modes (S3 and higher). The remaining four GPIOs are powered by
970 the Intel SCH suspend power supply. These GPIOs remain
971 active during S3. The suspend-powered GPIOs can be used to wake the
972 system from the Suspend-to-RAM state.
973
974 The Intel Tunnel Creek processor has 5 GPIOs powered by the
975 core power rail and 9 from suspend power supply.
976
977 The Intel Centerton processor has a total of 30 GPIO pins.
978 Twenty-one are powered by the core power rail and 9 from the
979 suspend power supply.
980
981 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
982 power well and 6 from the suspend power well.
983
984config GPIO_SCH311X
985 tristate "SMSC SCH311x SuperI/O GPIO"
986 help
987 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
988 SCH3116 "Super I/O" chipsets.
989
990 To compile this driver as a module, choose M here: the module will
991 be called gpio-sch311x.
992
993config GPIO_TS5500
994 tristate "TS-5500 DIO blocks and compatibles"
995 depends on TS5500 || COMPILE_TEST
996 help
997 This driver supports Digital I/O exposed by pin blocks found on some
998 Technologic Systems platforms. It includes, but is not limited to, 3
999 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1000 LCD port.
1001
1002config GPIO_WINBOND
1003 tristate "Winbond Super I/O GPIO support"
1004 select ISA_BUS_API
1005 help
1006 This option enables support for GPIOs found on Winbond Super I/O
1007 chips.
1008 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1009 supported.
1010
1011 You will need to provide a module parameter "gpios", or a
1012 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1013 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1014
1015 To compile this driver as a module, choose M here: the module will
1016 be called gpio-winbond.
1017
1018config GPIO_WS16C48
1019 tristate "WinSystems WS16C48 GPIO support"
1020 select ISA_BUS_API
1021 select REGMAP_IRQ
1022 select REGMAP_MMIO
1023 select GPIOLIB_IRQCHIP
1024 select GPIO_REGMAP
1025 help
1026 Enables GPIO support for the WinSystems WS16C48. The base port
1027 addresses for the devices may be configured via the base module
1028 parameter. The interrupt line numbers for the devices may be
1029 configured via the irq module parameter.
1030
1031endmenu
1032
1033menu "I2C GPIO expanders"
1034 depends on I2C
1035
1036config GPIO_ADNP
1037 tristate "Avionic Design N-bit GPIO expander"
1038 depends on OF_GPIO
1039 select GPIOLIB_IRQCHIP
1040 help
1041 This option enables support for N GPIOs found on Avionic Design
1042 I2C GPIO expanders. The register space will be extended by powers
1043 of two, so the controller will need to accommodate for that. For
1044 example: if a controller provides 48 pins, 6 registers will be
1045 enough to represent all pins, but the driver will assume a
1046 register layout for 64 pins (8 registers).
1047
1048config GPIO_FXL6408
1049 tristate "FXL6408 I2C GPIO expander"
1050 select GPIO_REGMAP
1051 select REGMAP_I2C
1052 help
1053 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1054
1055 To compile this driver as a module, choose M here: the module will
1056 be called gpio-fxl6408.
1057
1058config GPIO_DS4520
1059 tristate "DS4520 I2C GPIO expander"
1060 select REGMAP_I2C
1061 select GPIO_REGMAP
1062 help
1063 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1064 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1065
1066 To compile this driver as a module, choose M here: the module will
1067 be called gpio-ds4520.
1068
1069config GPIO_GW_PLD
1070 tristate "Gateworks PLD GPIO Expander"
1071 depends on OF_GPIO
1072 help
1073 Say yes here to provide access to the Gateworks I2C PLD GPIO
1074 Expander. This is used at least on the Cambria GW2358-4.
1075
1076config GPIO_MAX7300
1077 tristate "Maxim MAX7300 GPIO expander"
1078 select GPIO_MAX730X
1079 help
1080 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1081
1082config GPIO_MAX732X
1083 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1084 help
1085 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1086 Port Expanders. Each IO port on these chips has a fixed role of
1087 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1088 Input and Output (designed by 'P'). The combinations are listed
1089 below:
1090
1091 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1092 max7322 (4I4O), max7323 (4P4O)
1093
1094 16 bits: max7324 (8I8O), max7325 (8P8O),
1095 max7326 (4I12O), max7327 (4P12O)
1096
1097 Board setup code must specify the model to use, and the start
1098 number for these GPIOs.
1099
1100config GPIO_MAX732X_IRQ
1101 bool "Interrupt controller support for MAX732x"
1102 depends on GPIO_MAX732X=y
1103 select GPIOLIB_IRQCHIP
1104 help
1105 Say yes here to enable the max732x to be used as an interrupt
1106 controller. It requires the driver to be built in the kernel.
1107
1108config GPIO_PCA953X
1109 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1110 select REGMAP_I2C
1111 help
1112 Say yes here to provide access to several register-oriented
1113 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1114 models include:
1115
1116 4 bits: pca9536, pca9537
1117
1118 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1119 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1120
1121 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1122 tca6416
1123
1124 24 bits: tca6424
1125
1126 40 bits: pca9505, pca9698
1127
1128config GPIO_PCA953X_IRQ
1129 bool "Interrupt controller support for PCA953x"
1130 depends on GPIO_PCA953X
1131 select GPIOLIB_IRQCHIP
1132 help
1133 Say yes here to enable the pca953x to be used as an interrupt
1134 controller.
1135
1136config GPIO_PCA9570
1137 tristate "PCA9570 4-Bit I2C GPO expander"
1138 help
1139 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1140
1141 To compile this driver as a module, choose M here: the module will
1142 be called gpio-pca9570.
1143
1144config GPIO_PCF857X
1145 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1146 select GPIOLIB_IRQCHIP
1147 select IRQ_DOMAIN
1148 help
1149 Say yes here to provide access to most "quasi-bidirectional" I2C
1150 GPIO expanders used for additional digital outputs or inputs.
1151 Most of these parts are from NXP, though TI is a second source for
1152 some of them. Compatible models include:
1153
1154 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1155 pca9670, pca9672, pca9674, pca9674a,
1156 max7328, max7329
1157
1158 16 bits: pcf8575, pcf8575c, pca8575,
1159 pca9671, pca9673, pca9675
1160
1161 Your board setup code will need to declare the expanders in
1162 use, and assign numbers to the GPIOs they expose. Those GPIOs
1163 can then be used from drivers and other kernel code, just like
1164 other GPIOs, but only accessible from task contexts.
1165
1166 This driver provides an in-kernel interface to those GPIOs using
1167 platform-neutral GPIO calls.
1168
1169config GPIO_TPIC2810
1170 tristate "TPIC2810 8-Bit I2C GPO expander"
1171 help
1172 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1173
1174 To compile this driver as a module, choose M here: the module will
1175 be called gpio-tpic2810.
1176
1177config GPIO_TS4900
1178 tristate "Technologic Systems FPGA I2C GPIO"
1179 depends on SOC_IMX6 || COMPILE_TEST
1180 select REGMAP_I2C
1181 help
1182 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1183 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1184
1185endmenu
1186
1187menu "MFD GPIO expanders"
1188
1189config GPIO_ADP5520
1190 tristate "GPIO Support for ADP5520 PMIC"
1191 depends on PMIC_ADP5520
1192 help
1193 This option enables support for on-chip GPIO found
1194 on Analog Devices ADP5520 PMICs.
1195
1196config GPIO_ALTERA_A10SR
1197 tristate "Altera Arria10 System Resource GPIO"
1198 depends on MFD_ALTERA_A10SR
1199 help
1200 Driver for Arria10 Development Kit GPIO expansion which
1201 includes reads of pushbuttons and DIP switches as well
1202 as writes to LEDs.
1203
1204config GPIO_ARIZONA
1205 tristate "Wolfson Microelectronics Arizona class devices"
1206 depends on MFD_ARIZONA
1207 help
1208 Support for GPIOs on Wolfson Arizona class devices.
1209
1210config GPIO_BD71815
1211 tristate "ROHM BD71815 PMIC GPIO support"
1212 depends on MFD_ROHM_BD71828
1213 help
1214 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1215 available on the ROHM PMIC.
1216
1217 This driver can also be built as a module. If so, the module
1218 will be called gpio-bd71815.
1219
1220config GPIO_BD71828
1221 tristate "ROHM BD71828 GPIO support"
1222 depends on MFD_ROHM_BD71828
1223 help
1224 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1225 available on the ROHM PMIC in total. The GPIOs are limited to
1226 outputs only and pins must be configured to GPIO outputs by
1227 OTP. Enable this only if you want to use these pins as outputs.
1228
1229 This driver can also be built as a module. If so, the module
1230 will be called gpio-bd71828.
1231
1232config GPIO_BD9571MWV
1233 tristate "ROHM BD9571 GPIO support"
1234 depends on MFD_BD9571MWV
1235 help
1236 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1237 available on the ROHM PMIC in total, both of which can also
1238 generate interrupts.
1239
1240 This driver can also be built as a module. If so, the module
1241 will be called gpio-bd9571mwv.
1242
1243config GPIO_CRYSTAL_COVE
1244 tristate "GPIO support for Crystal Cove PMIC"
1245 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1246 select GPIOLIB_IRQCHIP
1247 help
1248 Support for GPIO pins on Crystal Cove PMIC.
1249
1250 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1251 inside.
1252
1253 This driver can also be built as a module. If so, the module will be
1254 called gpio-crystalcove.
1255
1256config GPIO_CS5535
1257 tristate "AMD CS5535/CS5536 GPIO support"
1258 depends on X86 || MIPS || COMPILE_TEST
1259 depends on MFD_CS5535
1260 help
1261 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1262 can be used for quite a number of things. The CS5535/6 is found on
1263 AMD Geode and Lemote Yeeloong devices.
1264
1265 If unsure, say N.
1266
1267config GPIO_DA9052
1268 tristate "Dialog DA9052 GPIO"
1269 depends on PMIC_DA9052
1270 help
1271 Say yes here to enable the GPIO driver for the DA9052 chip.
1272
1273config GPIO_DA9055
1274 tristate "Dialog Semiconductor DA9055 GPIO"
1275 depends on MFD_DA9055
1276 help
1277 Say yes here to enable the GPIO driver for the DA9055 chip.
1278
1279 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1280 be controlled by this driver.
1281
1282 If driver is built as a module it will be called gpio-da9055.
1283
1284config GPIO_DLN2
1285 tristate "Diolan DLN2 GPIO support"
1286 depends on MFD_DLN2
1287 select GPIOLIB_IRQCHIP
1288
1289 help
1290 Select this option to enable GPIO driver for the Diolan DLN2
1291 board.
1292
1293 This driver can also be built as a module. If so, the module
1294 will be called gpio-dln2.
1295
1296config HTC_EGPIO
1297 bool "HTC EGPIO support"
1298 depends on ARM
1299 help
1300 This driver supports the CPLD egpio chip present on
1301 several HTC phones. It provides basic support for input
1302 pins, output pins, and IRQs.
1303
1304config GPIO_ELKHARTLAKE
1305 tristate "Intel Elkhart Lake PSE GPIO support"
1306 depends on X86 || COMPILE_TEST
1307 select GPIO_TANGIER
1308 help
1309 Select this option to enable GPIO support for Intel Elkhart Lake
1310 PSE GPIO IP.
1311
1312 To compile this driver as a module, choose M here: the module will
1313 be called gpio-elkhartlake.
1314
1315config GPIO_JANZ_TTL
1316 tristate "Janz VMOD-TTL Digital IO Module"
1317 depends on MFD_JANZ_CMODIO
1318 help
1319 This enables support for the Janz VMOD-TTL Digital IO module.
1320 This driver provides support for driving the pins in output
1321 mode only. Input mode is not supported.
1322
1323config GPIO_KEMPLD
1324 tristate "Kontron ETX / COMexpress GPIO"
1325 depends on MFD_KEMPLD
1326 help
1327 This enables support for the PLD GPIO interface on some Kontron ETX
1328 and COMexpress (ETXexpress) modules.
1329
1330 This driver can also be built as a module. If so, the module will be
1331 called gpio-kempld.
1332
1333config GPIO_LJCA
1334 tristate "INTEL La Jolla Cove Adapter GPIO support"
1335 depends on USB_LJCA
1336 select GPIOLIB_IRQCHIP
1337 default USB_LJCA
1338 help
1339 Select this option to enable GPIO driver for the INTEL
1340 La Jolla Cove Adapter (LJCA) board.
1341
1342 This driver can also be built as a module. If so, the module
1343 will be called gpio-ljca.
1344
1345config GPIO_LP3943
1346 tristate "TI/National Semiconductor LP3943 GPIO expander"
1347 depends on MFD_LP3943
1348 help
1349 GPIO driver for LP3943 MFD.
1350 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1351 Open drain outputs are required for this usage.
1352
1353config GPIO_LP873X
1354 tristate "TI LP873X GPO"
1355 depends on MFD_TI_LP873X
1356 help
1357 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1358 on LP873X PMICs.
1359
1360 This driver can also be built as a module. If so, the module will be
1361 called gpio-lp873x.
1362
1363config GPIO_LP87565
1364 tristate "TI LP87565 GPIO"
1365 depends on MFD_TI_LP87565
1366 help
1367 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1368 on LP87565 PMICs.
1369
1370 This driver can also be built as a module. If so, the module will be
1371 called gpio-lp87565.
1372
1373config GPIO_MADERA
1374 tristate "Cirrus Logic Madera class codecs"
1375 depends on PINCTRL_MADERA
1376 help
1377 Support for GPIOs on Cirrus Logic Madera class codecs.
1378
1379config GPIO_MAX77620
1380 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1381 depends on MFD_MAX77620
1382 select GPIOLIB_IRQCHIP
1383 help
1384 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1385 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1386 driver also provides interrupt support for each of the GPIOs.
1387 Say yes here to enable the max77620 to be used as GPIO controller.
1388
1389config GPIO_MAX77650
1390 tristate "Maxim MAX77650/77651 GPIO support"
1391 depends on MFD_MAX77650
1392 help
1393 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1394 These chips have a single pin that can be configured as GPIO.
1395
1396config GPIO_PALMAS
1397 bool "TI PALMAS series PMICs GPIO"
1398 depends on MFD_PALMAS
1399 help
1400 Select this option to enable GPIO driver for the TI PALMAS
1401 series chip family.
1402
1403config GPIO_PMIC_EIC_SPRD
1404 tristate "Spreadtrum PMIC EIC support"
1405 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1406 depends on OF_GPIO
1407 select GPIOLIB_IRQCHIP
1408 help
1409 Say yes here to support Spreadtrum PMIC EIC device.
1410
1411config GPIO_RC5T583
1412 bool "RICOH RC5T583 GPIO"
1413 depends on MFD_RC5T583
1414 help
1415 Select this option to enable GPIO driver for the Ricoh RC5T583
1416 chip family.
1417 This driver provides the support for driving/reading the GPIO pins
1418 of RC5T583 device through standard GPIO library.
1419
1420config GPIO_SL28CPLD
1421 tristate "Kontron sl28cpld GPIO support"
1422 depends on MFD_SL28CPLD || COMPILE_TEST
1423 select GPIO_REGMAP
1424 select GPIOLIB_IRQCHIP
1425 select REGMAP_IRQ
1426 help
1427 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1428
1429 This driver can also be built as a module. If so, the module will be
1430 called gpio-sl28cpld.
1431
1432config GPIO_STMPE
1433 bool "STMPE GPIOs"
1434 depends on MFD_STMPE
1435 depends on OF_GPIO
1436 select GPIOLIB_IRQCHIP
1437 help
1438 This enables support for the GPIOs found on the STMPE I/O
1439 Expanders.
1440
1441config GPIO_TC3589X
1442 bool "TC3589X GPIOs"
1443 depends on MFD_TC3589X
1444 depends on OF_GPIO
1445 select GPIOLIB_IRQCHIP
1446 help
1447 This enables support for the GPIOs found on the TC3589X
1448 I/O Expander.
1449
1450config GPIO_TIMBERDALE
1451 bool "Support for timberdale GPIO IP"
1452 depends on MFD_TIMBERDALE
1453 help
1454 Add support for the GPIO IP in the timberdale FPGA.
1455
1456config GPIO_TN48M_CPLD
1457 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1458 depends on MFD_TN48M_CPLD
1459 select GPIO_REGMAP
1460 help
1461 This enables support for the GPIOs found on the Delta
1462 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1463 they are input-only or output-only type.
1464
1465 This driver can also be built as a module. If so, the
1466 module will be called gpio-tn48m.
1467
1468config GPIO_TPS65086
1469 tristate "TI TPS65086 GPO"
1470 depends on MFD_TPS65086
1471 help
1472 This driver supports the GPO on TI TPS65086x PMICs.
1473
1474config GPIO_TPS65218
1475 tristate "TPS65218 GPIO"
1476 depends on MFD_TPS65218
1477 help
1478 Select this option to enable GPIO driver for the TPS65218
1479 chip family.
1480
1481config GPIO_TPS65219
1482 tristate "TPS65219 GPIO"
1483 depends on MFD_TPS65219
1484 default MFD_TPS65219
1485 help
1486 Select this option to enable GPIO driver for the TPS65219 chip
1487 family.
1488 GPIO0 is statically configured as either input or output prior to
1489 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1490 is statically configured by NVM. GPIO0 can't be used as a generic
1491 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1492 MULTI_DEVICE_EN=1.
1493
1494 This driver can also be built as a module. If so, the module will be
1495 called gpio_tps65219.
1496
1497config GPIO_TPS6586X
1498 bool "TPS6586X GPIO"
1499 depends on MFD_TPS6586X
1500 help
1501 Select this option to enable GPIO driver for the TPS6586X
1502 chip family.
1503
1504config GPIO_TPS65910
1505 bool "TPS65910 GPIO"
1506 depends on MFD_TPS65910
1507 help
1508 Select this option to enable GPIO driver for the TPS65910
1509 chip family.
1510
1511config GPIO_TPS65912
1512 tristate "TI TPS65912 GPIO"
1513 depends on MFD_TPS65912
1514 help
1515 This driver supports TPS65912 GPIO chip.
1516
1517config GPIO_TPS68470
1518 tristate "TPS68470 GPIO"
1519 depends on INTEL_SKL_INT3472
1520 help
1521 Select this option to enable GPIO driver for the TPS68470
1522 chip family.
1523 There are 7 GPIOs and few sensor-related GPIOs supported
1524 by the TPS68470. While the 7 GPIOs can be configured as
1525 input or output as appropriate, the sensor related GPIOs
1526 are "output only" GPIOs.
1527
1528config GPIO_TQMX86
1529 tristate "TQ-Systems QTMX86 GPIO"
1530 depends on MFD_TQMX86 || COMPILE_TEST
1531 depends on HAS_IOPORT_MAP
1532 select GPIOLIB_IRQCHIP
1533 help
1534 This driver supports GPIO on the TQMX86 IO controller.
1535
1536config GPIO_TWL4030
1537 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1538 depends on TWL4030_CORE
1539 help
1540 Say yes here to access the GPIO signals of various multi-function
1541 power management chips from Texas Instruments.
1542
1543config GPIO_TWL6040
1544 tristate "TWL6040 GPO"
1545 depends on TWL6040_CORE
1546 help
1547 Say yes here to access the GPO signals of twl6040
1548 audio chip from Texas Instruments.
1549
1550config GPIO_WHISKEY_COVE
1551 tristate "GPIO support for Whiskey Cove PMIC"
1552 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1553 select GPIOLIB_IRQCHIP
1554 help
1555 Support for GPIO pins on Whiskey Cove PMIC.
1556
1557 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1558 inside.
1559
1560 This driver can also be built as a module. If so, the module will be
1561 called gpio-wcove.
1562
1563config GPIO_WM831X
1564 tristate "WM831x GPIOs"
1565 depends on MFD_WM831X
1566 help
1567 Say yes here to access the GPIO signals of WM831x power management
1568 chips from Wolfson Microelectronics.
1569
1570config GPIO_WM8350
1571 tristate "WM8350 GPIOs"
1572 depends on MFD_WM8350
1573 help
1574 Say yes here to access the GPIO signals of WM8350 power management
1575 chips from Wolfson Microelectronics.
1576
1577config GPIO_WM8994
1578 tristate "WM8994 GPIOs"
1579 depends on MFD_WM8994
1580 help
1581 Say yes here to access the GPIO signals of WM8994 audio hub
1582 CODECs from Wolfson Microelectronics.
1583
1584endmenu
1585
1586menu "PCI GPIO expanders"
1587 depends on PCI
1588
1589config GPIO_AMD8111
1590 tristate "AMD 8111 GPIO driver"
1591 depends on X86 || COMPILE_TEST
1592 depends on HAS_IOPORT_MAP
1593 help
1594 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1595
1596 Note that usually system firmware/ACPI handles GPIO pins on their
1597 own and users might easily break their systems with uncareful usage
1598 of this driver!
1599
1600 If unsure, say N
1601
1602config GPIO_BT8XX
1603 tristate "BT8XX GPIO abuser"
1604 depends on VIDEO_BT848=n
1605 help
1606 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1607 as a cheap PCI GPIO card.
1608
1609 This chip can be found on Miro, Hauppauge and STB TV-cards.
1610
1611 The card needs to be physically altered for using it as a
1612 GPIO card. For more information on how to build a GPIO card
1613 from a BT8xx TV card, see the documentation file at
1614 Documentation/driver-api/gpio/bt8xxgpio.rst
1615
1616 If unsure, say N.
1617
1618config GPIO_MERRIFIELD
1619 tristate "Intel Merrifield GPIO support"
1620 depends on X86_INTEL_MID
1621 select GPIO_TANGIER
1622 help
1623 Say Y here to support Intel Merrifield GPIO.
1624
1625config GPIO_MLXBF
1626 tristate "Mellanox BlueField SoC GPIO"
1627 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1628 select GPIO_GENERIC
1629 help
1630 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1631
1632config GPIO_MLXBF2
1633 tristate "Mellanox BlueField 2 SoC GPIO"
1634 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1635 select GPIO_GENERIC
1636 select GPIOLIB_IRQCHIP
1637 help
1638 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1639
1640config GPIO_MLXBF3
1641 tristate "Mellanox BlueField 3 SoC GPIO"
1642 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1643 select GPIO_GENERIC
1644 select GPIOLIB_IRQCHIP
1645 help
1646 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1647 This GPIO controller supports interrupt handling and enables the
1648 manipulation of certain GPIO pins.
1649 This controller should be used in parallel with pinctrl-mlxbf3 to
1650 control the desired GPIOs.
1651 This driver can also be built as a module called mlxbf3-gpio.
1652
1653config GPIO_ML_IOH
1654 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1655 depends on X86 || COMPILE_TEST
1656 select GENERIC_IRQ_CHIP
1657 help
1658 ML7213 is companion chip for Intel Atom E6xx series.
1659 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1660 Hub) which is for IVI (In-Vehicle Infotainment) use.
1661 This driver can access the IOH's GPIO device.
1662
1663config GPIO_PCH
1664 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1665 depends on X86_32 || MIPS || COMPILE_TEST
1666 select GENERIC_IRQ_CHIP
1667 help
1668 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1669 which is an IOH (Input/Output Hub) for x86 embedded processor.
1670 This driver can access PCH GPIO device.
1671
1672 This driver also can be used for LAPIS Semiconductor IOH (Input/
1673 Output Hub), ML7223 and ML7831.
1674 ML7223 IOH is for MP (Media Phone) use.
1675 ML7831 IOH is for general purpose use.
1676 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1677 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1678
1679config GPIO_PCI_IDIO_16
1680 tristate "ACCES PCI-IDIO-16 GPIO support"
1681 select REGMAP_MMIO
1682 select GPIO_IDIO_16
1683 help
1684 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1685 generated when any of the inputs change state (low to high or high to
1686 low). Input filter control is not supported by this driver, and the
1687 input filters are deactivated by this driver.
1688
1689config GPIO_PCIE_IDIO_24
1690 tristate "ACCES PCIe-IDIO-24 GPIO support"
1691 select REGMAP_IRQ
1692 select REGMAP_MMIO
1693 select GPIOLIB_IRQCHIP
1694 select GPIO_REGMAP
1695 help
1696 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1697 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1698 when any of the inputs change state (low to high or high to low).
1699 Input filter control is not supported by this driver, and the input
1700 filters are deactivated by this driver.
1701
1702config GPIO_RDC321X
1703 tristate "RDC R-321x GPIO support"
1704 select MFD_CORE
1705 select MFD_RDC321X
1706 help
1707 Support for the RDC R321x SoC GPIOs over southbridge
1708 PCI configuration space.
1709
1710config GPIO_SODAVILLE
1711 bool "Intel Sodaville GPIO support"
1712 depends on X86 && OF
1713 select GPIO_GENERIC
1714 select GENERIC_IRQ_CHIP
1715 help
1716 Say Y here to support Intel Sodaville GPIO.
1717
1718endmenu
1719
1720menu "SPI GPIO expanders"
1721 depends on SPI_MASTER
1722
1723config GPIO_74X164
1724 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1725 depends on OF_GPIO
1726 help
1727 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1728 shift registers. This driver can be used to provide access
1729 to more GPIO outputs.
1730
1731config GPIO_MAX3191X
1732 tristate "Maxim MAX3191x industrial serializer"
1733 select CRC8
1734 help
1735 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1736 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1737 chip to make 8 digital 24V inputs available via SPI. Supports
1738 CRC checksums to guard against electromagnetic interference,
1739 as well as undervoltage and overtemperature detection.
1740
1741config GPIO_MAX7301
1742 tristate "Maxim MAX7301 GPIO expander"
1743 select GPIO_MAX730X
1744 help
1745 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1746
1747config GPIO_MC33880
1748 tristate "Freescale MC33880 high-side/low-side switch"
1749 help
1750 SPI driver for Freescale MC33880 high-side/low-side switch.
1751 This provides GPIO interface supporting inputs and outputs.
1752
1753config GPIO_PISOSR
1754 tristate "Generic parallel-in/serial-out shift register"
1755 help
1756 GPIO driver for SPI compatible parallel-in/serial-out shift
1757 registers. These are input only devices.
1758
1759config GPIO_XRA1403
1760 tristate "EXAR XRA1403 16-bit GPIO expander"
1761 select REGMAP_SPI
1762 help
1763 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1764
1765config GPIO_MOXTET
1766 tristate "Turris Mox Moxtet bus GPIO expander"
1767 depends on MOXTET
1768 help
1769 Say yes here if you are building for the Turris Mox router.
1770 This is the driver needed for configuring the GPIOs via the Moxtet
1771 bus. For example the Mox module with SFP cage needs this driver
1772 so that phylink can use corresponding GPIOs.
1773
1774endmenu
1775
1776menu "USB GPIO expanders"
1777 depends on USB
1778
1779config GPIO_VIPERBOARD
1780 tristate "Viperboard GPIO a & b support"
1781 depends on MFD_VIPERBOARD
1782 help
1783 Say yes here to access the GPIO signals of Nano River
1784 Technologies Viperboard. There are two GPIO chips on the
1785 board: gpioa and gpiob.
1786 See viperboard API specification and Nano
1787 River Tech's viperboard.h for detailed meaning
1788 of the module parameters.
1789
1790endmenu
1791
1792menu "Virtual GPIO drivers"
1793
1794config GPIO_AGGREGATOR
1795 tristate "GPIO Aggregator"
1796 help
1797 Say yes here to enable the GPIO Aggregator, which provides a way to
1798 aggregate existing GPIO lines into a new virtual GPIO chip.
1799 This can serve the following purposes:
1800 - Assign permissions for a collection of GPIO lines to a user,
1801 - Export a collection of GPIO lines to a virtual machine,
1802 - Provide a generic driver for a GPIO-operated device in an
1803 industrial control context, to be operated from userspace using
1804 the GPIO chardev interface.
1805
1806config GPIO_LATCH
1807 tristate "GPIO latch driver"
1808 help
1809 Say yes here to enable a driver for GPIO multiplexers based on latches
1810 connected to other GPIOs.
1811
1812config GPIO_MOCKUP
1813 tristate "GPIO Testing Driver (DEPRECATED)"
1814 select IRQ_SIM
1815 help
1816 This module is DEPRECATED. Please consider using gpio-sim instead.
1817
1818 This enables GPIO Testing driver, which provides a way to test GPIO
1819 subsystem through sysfs (or char device) and debugfs.
1820 User could use it through the script in
1821 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1822 it.
1823
1824config GPIO_VIRTIO
1825 tristate "VirtIO GPIO support"
1826 depends on VIRTIO
1827 select GPIOLIB_IRQCHIP
1828 help
1829 Say Y here to enable guest support for virtio-based GPIO controllers.
1830
1831 These virtual GPIOs can be routed to real GPIOs or attached to
1832 simulators on the host (like QEMU).
1833
1834config GPIO_SIM
1835 tristate "GPIO Simulator Module"
1836 select IRQ_SIM
1837 select CONFIGFS_FS
1838 help
1839 This enables the GPIO simulator - a configfs-based GPIO testing
1840 driver.
1841
1842endmenu
1843
1844endif