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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_NOMADIK
482 bool "Nomadik GPIO driver"
483 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
484 select GPIOLIB_IRQCHIP
485 help
486 Say yes here to support the Nomadik SoC GPIO block. This block is also
487 used by the Mobileye EyeQ5 SoC.
488
489 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
490 It is deeply interconnected with the associated pinctrl driver as GPIO
491 registers handle muxing ("alternate functions") as well.
492
493config GPIO_NPCM_SGPIO
494 bool "Nuvoton SGPIO support"
495 depends on ARCH_NPCM || COMPILE_TEST
496 select GPIOLIB_IRQCHIP
497 help
498 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
499
500config GPIO_OCTEON
501 tristate "Cavium OCTEON GPIO"
502 depends on CAVIUM_OCTEON_SOC
503 default y
504 help
505 Say yes here to support the on-chip GPIO lines on the OCTEON
506 family of SOCs.
507
508config GPIO_OMAP
509 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
510 default y if ARCH_OMAP
511 depends on ARM
512 select GENERIC_IRQ_CHIP
513 select GPIOLIB_IRQCHIP
514 help
515 Say yes here to enable GPIO support for TI OMAP SoCs.
516
517config GPIO_PL061
518 tristate "PrimeCell PL061 GPIO support"
519 depends on ARM_AMBA
520 select IRQ_DOMAIN
521 select GPIOLIB_IRQCHIP
522 help
523 Say yes here to support the PrimeCell PL061 GPIO device.
524
525config GPIO_PXA
526 bool "PXA GPIO support"
527 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
528 help
529 Say yes here to support the PXA GPIO device.
530
531config GPIO_RCAR
532 tristate "Renesas R-Car and RZ/G GPIO support"
533 depends on ARCH_RENESAS || COMPILE_TEST
534 select GPIOLIB_IRQCHIP
535 help
536 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
537
538config GPIO_RDA
539 bool "RDA Micro GPIO controller support"
540 depends on ARCH_RDA || COMPILE_TEST
541 depends on OF_GPIO
542 select GPIO_GENERIC
543 select GPIOLIB_IRQCHIP
544 help
545 Say Y here to support RDA Micro GPIO controller.
546
547config GPIO_REALTEK_OTTO
548 tristate "Realtek Otto GPIO support"
549 depends on MACH_REALTEK_RTL
550 default MACH_REALTEK_RTL
551 select GPIO_GENERIC
552 select GPIOLIB_IRQCHIP
553 help
554 The GPIO controller on the Otto MIPS platform supports up to two
555 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
556 are grouped in four 8-bit wide ports.
557
558 When built as a module, the module will be called realtek_otto_gpio.
559
560config GPIO_REG
561 bool
562 help
563 A 32-bit single register GPIO fixed in/out implementation. This
564 can be used to represent any register as a set of GPIO signals.
565
566config GPIO_ROCKCHIP
567 tristate "Rockchip GPIO support"
568 depends on ARCH_ROCKCHIP || COMPILE_TEST
569 select GENERIC_IRQ_CHIP
570 select GPIOLIB_IRQCHIP
571 default ARCH_ROCKCHIP
572 help
573 Say yes here to support GPIO on Rockchip SoCs.
574
575config GPIO_RTD
576 tristate "Realtek DHC GPIO support"
577 depends on ARCH_REALTEK
578 default y
579 select GPIOLIB_IRQCHIP
580 help
581 This option enables support for GPIOs found on Realtek DHC(Digital
582 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
583 RTD1319D, RTD1395, RTD1619 and RTD1619B.
584
585 Say yes here to support GPIO functionality and GPIO interrupt on
586 Realtek DHC SoCs.
587
588config GPIO_SAMA5D2_PIOBU
589 tristate "SAMA5D2 PIOBU GPIO support"
590 depends on MFD_SYSCON
591 depends on OF_GPIO
592 depends on ARCH_AT91 || COMPILE_TEST
593 select GPIO_SYSCON
594 help
595 Say yes here to use the PIOBU pins as GPIOs.
596
597 PIOBU pins on the SAMA5D2 can be used as GPIOs.
598 The difference from regular GPIOs is that they
599 maintain their value during backup/self-refresh.
600
601config GPIO_SIFIVE
602 tristate "SiFive GPIO support"
603 depends on OF_GPIO
604 select IRQ_DOMAIN_HIERARCHY
605 select GPIO_GENERIC
606 select GPIOLIB_IRQCHIP
607 select REGMAP_MMIO
608 help
609 Say yes here to support the GPIO device on SiFive SoCs.
610
611config GPIO_SIOX
612 tristate "SIOX GPIO support"
613 depends on SIOX
614 select GPIOLIB_IRQCHIP
615 help
616 Say yes here to support SIOX I/O devices. These are units connected
617 via a SIOX bus and have a number of fixed-direction I/O lines.
618
619config GPIO_SNPS_CREG
620 bool "Synopsys GPIO via CREG (Control REGisters) driver"
621 depends on ARC || COMPILE_TEST
622 depends on OF_GPIO
623 help
624 This driver supports GPIOs via CREG on various Synopsys SoCs.
625 This is a single-register MMIO GPIO driver for complex cases
626 where only several fields in register belong to GPIO lines and
627 each GPIO line owns a field with different length and on/off value.
628
629config GPIO_SPEAR_SPICS
630 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
631 depends on PLAT_SPEAR
632 select GENERIC_IRQ_CHIP
633 help
634 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
635
636config GPIO_SPRD
637 tristate "Spreadtrum GPIO support"
638 depends on ARCH_SPRD || COMPILE_TEST
639 depends on OF_GPIO
640 select GPIOLIB_IRQCHIP
641 help
642 Say yes here to support Spreadtrum GPIO device.
643
644config GPIO_STP_XWAY
645 bool "XWAY STP GPIOs"
646 depends on SOC_XWAY || COMPILE_TEST
647 depends on OF_GPIO
648 help
649 This enables support for the Serial To Parallel (STP) unit found on
650 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
651 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
652 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
653 phy status.
654
655config GPIO_SYSCON
656 tristate "GPIO based on SYSCON"
657 depends on MFD_SYSCON && OF
658 help
659 Say yes here to support GPIO functionality though SYSCON driver.
660
661config GPIO_TANGIER
662 tristate
663 select GPIOLIB_IRQCHIP
664 help
665 GPIO support for Intel Tangier and compatible platforms.
666 Currently supported:
667 - Elkhart Lake
668 - Merrifield
669
670 If built as a module its name will be gpio-tangier.
671
672config GPIO_TB10X
673 bool
674 select GPIO_GENERIC
675 select GENERIC_IRQ_CHIP
676 select OF_GPIO
677
678config GPIO_TEGRA
679 tristate "NVIDIA Tegra GPIO support"
680 default ARCH_TEGRA
681 depends on ARCH_TEGRA || COMPILE_TEST
682 depends on OF_GPIO
683 select GPIOLIB_IRQCHIP
684 select IRQ_DOMAIN_HIERARCHY
685 help
686 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
687
688config GPIO_TEGRA186
689 tristate "NVIDIA Tegra186 GPIO support"
690 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
691 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
692 depends on OF_GPIO
693 select GPIOLIB_IRQCHIP
694 select IRQ_DOMAIN_HIERARCHY
695 help
696 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
697
698config GPIO_TS4800
699 tristate "TS-4800 DIO blocks and compatibles"
700 depends on OF_GPIO
701 depends on SOC_IMX51 || COMPILE_TEST
702 select GPIO_GENERIC
703 help
704 This driver support TS-4800 FPGA GPIO controllers.
705
706config GPIO_THUNDERX
707 tristate "Cavium ThunderX/OCTEON-TX GPIO"
708 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
709 depends on PCI_MSI
710 select GPIOLIB_IRQCHIP
711 select IRQ_DOMAIN_HIERARCHY
712 select IRQ_FASTEOI_HIERARCHY_HANDLERS
713 help
714 Say yes here to support the on-chip GPIO lines on the ThunderX
715 and OCTEON-TX families of SoCs.
716
717config GPIO_UNIPHIER
718 tristate "UniPhier GPIO support"
719 depends on ARCH_UNIPHIER || COMPILE_TEST
720 depends on OF_GPIO
721 select IRQ_DOMAIN_HIERARCHY
722 help
723 Say yes here to support UniPhier GPIOs.
724
725config GPIO_VF610
726 bool "VF610 GPIO support"
727 default y if SOC_VF610
728 depends on ARCH_MXC || COMPILE_TEST
729 select GPIOLIB_IRQCHIP
730 help
731 Say yes here to support i.MX or Vybrid vf610 GPIOs.
732
733config GPIO_VISCONTI
734 tristate "Toshiba Visconti GPIO support"
735 depends on ARCH_VISCONTI || COMPILE_TEST
736 depends on OF_GPIO
737 select GPIOLIB_IRQCHIP
738 select GPIO_GENERIC
739 select IRQ_DOMAIN_HIERARCHY
740 help
741 Say yes here to support GPIO on Tohisba Visconti.
742
743config GPIO_WCD934X
744 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
745 depends on MFD_WCD934X && OF_GPIO
746 help
747 This driver is to support GPIO block found on the Qualcomm Technologies
748 Inc WCD9340/WCD9341 Audio Codec.
749
750config GPIO_XGENE
751 bool "APM X-Gene GPIO controller support"
752 depends on ARM64 && OF_GPIO
753 help
754 This driver is to support the GPIO block within the APM X-Gene SoC
755 platform's generic flash controller. The GPIO pins are muxed with
756 the generic flash controller's address and data pins. Say yes
757 here to enable the GFC GPIO functionality.
758
759config GPIO_XGENE_SB
760 tristate "APM X-Gene GPIO standby controller support"
761 depends on (ARCH_XGENE || COMPILE_TEST)
762 select GPIO_GENERIC
763 select GPIOLIB_IRQCHIP
764 select IRQ_DOMAIN_HIERARCHY
765 help
766 This driver supports the GPIO block within the APM X-Gene
767 Standby Domain. Say yes here to enable the GPIO functionality.
768
769config GPIO_XILINX
770 tristate "Xilinx GPIO support"
771 select GPIOLIB_IRQCHIP
772 depends on OF_GPIO
773 help
774 Say yes here to support the Xilinx FPGA GPIO device.
775
776config GPIO_XLP
777 tristate "Cavium ThunderX2 GPIO support"
778 depends on ARCH_THUNDER2 || COMPILE_TEST
779 select GPIOLIB_IRQCHIP
780 help
781 This driver provides support for GPIO interface on Cavium's ThunderX2
782 CN99XX SoCs (Originally from Netlogic XLP).
783
784 If unsure, say N.
785
786config GPIO_XTENSA
787 bool "Xtensa GPIO32 support"
788 depends on XTENSA
789 depends on HAVE_XTENSA_GPIO32
790 depends on !SMP
791 help
792 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
793 and EXPSTATE (output) ports.
794
795config GPIO_ZEVIO
796 bool "LSI ZEVIO SoC memory mapped GPIOs"
797 depends on ARM
798 help
799 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
800
801config GPIO_ZYNQ
802 tristate "Xilinx Zynq GPIO support"
803 depends on ARCH_ZYNQ || ARCH_ZYNQMP
804 select GPIOLIB_IRQCHIP
805 help
806 Say yes here to support Xilinx Zynq GPIO controller.
807
808config GPIO_ZYNQMP_MODEPIN
809 tristate "ZynqMP ps-mode pin GPIO configuration driver"
810 depends on ZYNQMP_FIRMWARE
811 default ZYNQMP_FIRMWARE
812 help
813 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
814 driver.
815
816 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
817 is 4-bits boot mode pins. It sets and gets the status of
818 the ps-mode pin. Every pin can be configured as input/output.
819
820config GPIO_LOONGSON1
821 tristate "Loongson1 GPIO support"
822 depends on MACH_LOONGSON32
823 select GPIO_GENERIC
824 help
825 Say Y or M here to support GPIO on Loongson1 SoCs.
826
827config GPIO_AMD_FCH
828 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
829 help
830 This option enables driver for GPIO on AMD's Fusion Controller Hub,
831 as found on G-series SOCs (e.g. GX-412TC).
832
833 Note: This driver doesn't register itself automatically, as it
834 needs to be provided with platform-specific configuration.
835 (See e.g. CONFIG_PCENGINES_APU2.)
836
837config GPIO_MSC313
838 bool "MStar MSC313 GPIO support"
839 depends on ARCH_MSTARV7
840 default ARCH_MSTARV7
841 select GPIOLIB_IRQCHIP
842 select IRQ_DOMAIN_HIERARCHY
843 help
844 Say Y here to support the main GPIO block on MStar/SigmaStar
845 ARMv7-based SoCs.
846
847config GPIO_IDT3243X
848 tristate "IDT 79RC3243X GPIO support"
849 depends on MIKROTIK_RB532 || COMPILE_TEST
850 select GPIO_GENERIC
851 select GPIOLIB_IRQCHIP
852 help
853 Select this option to enable GPIO driver for
854 IDT 79RC3243X-based devices like Mikrotik RB532.
855
856 To compile this driver as a module, choose M here: the module will
857 be called gpio-idt3243x.
858
859endmenu
860
861menu "Port-mapped I/O GPIO drivers"
862 depends on X86 && HAS_IOPORT # I/O space access
863
864config GPIO_VX855
865 tristate "VIA VX855/VX875 GPIO"
866 depends on PCI
867 select MFD_CORE
868 select MFD_VX855
869 help
870 Support access to the VX855/VX875 GPIO lines through the GPIO library.
871
872 This driver provides common support for accessing the device.
873 Additional drivers must be enabled in order to use the
874 functionality of the device.
875
876config GPIO_I8255
877 tristate
878 select GPIO_REGMAP
879 help
880 Enables support for the i8255 interface library functions. The i8255
881 interface library provides functions to facilitate communication with
882 interfaces compatible with the venerable Intel 8255 Programmable
883 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
884 in the early 1970s but compatible interfaces are nowadays typically
885 found embedded in larger VLSI processing chips and FPGA components.
886
887 If built as a module its name will be gpio-i8255.
888
889config GPIO_104_DIO_48E
890 tristate "ACCES 104-DIO-48E GPIO support"
891 depends on PC104
892 select ISA_BUS_API
893 select REGMAP_MMIO
894 select REGMAP_IRQ
895 select GPIOLIB_IRQCHIP
896 select GPIO_I8255
897 select I8254
898 help
899 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
900 104-DIO-24E). The base port addresses for the devices may be
901 configured via the base module parameter. The interrupt line numbers
902 for the devices may be configured via the irq module parameter.
903
904config GPIO_104_IDIO_16
905 tristate "ACCES 104-IDIO-16 GPIO support"
906 depends on PC104
907 select ISA_BUS_API
908 select REGMAP_MMIO
909 select GPIO_IDIO_16
910 help
911 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
912 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
913 base port addresses for the devices may be configured via the base
914 module parameter. The interrupt line numbers for the devices may be
915 configured via the irq module parameter.
916
917config GPIO_104_IDI_48
918 tristate "ACCES 104-IDI-48 GPIO support"
919 depends on PC104
920 select ISA_BUS_API
921 select REGMAP_MMIO
922 select REGMAP_IRQ
923 select GPIOLIB_IRQCHIP
924 select GPIO_REGMAP
925 help
926 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
927 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
928 the devices may be configured via the base module parameter. The
929 interrupt line numbers for the devices may be configured via the irq
930 module parameter.
931
932config GPIO_F7188X
933 tristate "Fintek and Nuvoton Super-I/O GPIO support"
934 help
935 This option enables support for GPIOs found on Fintek Super-I/O
936 chips F71869, F71869A, F71882FG, F71889F and F81866.
937 As well as Nuvoton Super-I/O chip NCT6126D.
938
939 To compile this driver as a module, choose M here: the module will
940 be called f7188x-gpio.
941
942config GPIO_GPIO_MM
943 tristate "Diamond Systems GPIO-MM GPIO support"
944 depends on PC104
945 select ISA_BUS_API
946 select REGMAP_MMIO
947 select GPIO_I8255
948 help
949 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
950
951 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
952 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
953 support for these 48 channels of digital I/O.
954
955 The base port addresses for the devices may be configured via the base
956 array module parameter.
957
958config GPIO_IT87
959 tristate "IT87xx GPIO support"
960 help
961 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
962
963 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
964 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
965 well.
966
967 To compile this driver as a module, choose M here: the module will
968 be called gpio_it87.
969
970config GPIO_SCH
971 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
972 depends on (X86 || COMPILE_TEST) && ACPI
973 depends on LPC_SCH
974 select GPIOLIB_IRQCHIP
975 help
976 Say yes here to support GPIO interface on Intel Poulsbo SCH,
977 Intel Tunnel Creek processor, Intel Centerton processor or
978 Intel Quark X1000 SoC.
979
980 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
981 powered by the core power rail and are turned off during sleep
982 modes (S3 and higher). The remaining four GPIOs are powered by
983 the Intel SCH suspend power supply. These GPIOs remain
984 active during S3. The suspend-powered GPIOs can be used to wake the
985 system from the Suspend-to-RAM state.
986
987 The Intel Tunnel Creek processor has 5 GPIOs powered by the
988 core power rail and 9 from suspend power supply.
989
990 The Intel Centerton processor has a total of 30 GPIO pins.
991 Twenty-one are powered by the core power rail and 9 from the
992 suspend power supply.
993
994 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
995 power well and 6 from the suspend power well.
996
997config GPIO_SCH311X
998 tristate "SMSC SCH311x SuperI/O GPIO"
999 help
1000 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1001 SCH3116 "Super I/O" chipsets.
1002
1003 To compile this driver as a module, choose M here: the module will
1004 be called gpio-sch311x.
1005
1006config GPIO_TS5500
1007 tristate "TS-5500 DIO blocks and compatibles"
1008 depends on TS5500 || COMPILE_TEST
1009 help
1010 This driver supports Digital I/O exposed by pin blocks found on some
1011 Technologic Systems platforms. It includes, but is not limited to, 3
1012 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1013 LCD port.
1014
1015config GPIO_WINBOND
1016 tristate "Winbond Super I/O GPIO support"
1017 select ISA_BUS_API
1018 help
1019 This option enables support for GPIOs found on Winbond Super I/O
1020 chips.
1021 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1022 supported.
1023
1024 You will need to provide a module parameter "gpios", or a
1025 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1026 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1027
1028 To compile this driver as a module, choose M here: the module will
1029 be called gpio-winbond.
1030
1031config GPIO_WS16C48
1032 tristate "WinSystems WS16C48 GPIO support"
1033 select ISA_BUS_API
1034 select REGMAP_IRQ
1035 select REGMAP_MMIO
1036 select GPIOLIB_IRQCHIP
1037 select GPIO_REGMAP
1038 help
1039 Enables GPIO support for the WinSystems WS16C48. The base port
1040 addresses for the devices may be configured via the base module
1041 parameter. The interrupt line numbers for the devices may be
1042 configured via the irq module parameter.
1043
1044endmenu
1045
1046menu "I2C GPIO expanders"
1047 depends on I2C
1048
1049config GPIO_ADNP
1050 tristate "Avionic Design N-bit GPIO expander"
1051 depends on OF_GPIO
1052 select GPIOLIB_IRQCHIP
1053 help
1054 This option enables support for N GPIOs found on Avionic Design
1055 I2C GPIO expanders. The register space will be extended by powers
1056 of two, so the controller will need to accommodate for that. For
1057 example: if a controller provides 48 pins, 6 registers will be
1058 enough to represent all pins, but the driver will assume a
1059 register layout for 64 pins (8 registers).
1060
1061config GPIO_FXL6408
1062 tristate "FXL6408 I2C GPIO expander"
1063 select GPIO_REGMAP
1064 select REGMAP_I2C
1065 help
1066 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1067
1068 To compile this driver as a module, choose M here: the module will
1069 be called gpio-fxl6408.
1070
1071config GPIO_DS4520
1072 tristate "DS4520 I2C GPIO expander"
1073 select REGMAP_I2C
1074 select GPIO_REGMAP
1075 help
1076 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1077 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1078
1079 To compile this driver as a module, choose M here: the module will
1080 be called gpio-ds4520.
1081
1082config GPIO_GW_PLD
1083 tristate "Gateworks PLD GPIO Expander"
1084 depends on OF_GPIO
1085 help
1086 Say yes here to provide access to the Gateworks I2C PLD GPIO
1087 Expander. This is used at least on the Cambria GW2358-4.
1088
1089config GPIO_MAX7300
1090 tristate "Maxim MAX7300 GPIO expander"
1091 select GPIO_MAX730X
1092 help
1093 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1094
1095config GPIO_MAX732X
1096 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1097 help
1098 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1099 Port Expanders. Each IO port on these chips has a fixed role of
1100 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1101 Input and Output (designed by 'P'). The combinations are listed
1102 below:
1103
1104 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1105 max7322 (4I4O), max7323 (4P4O)
1106
1107 16 bits: max7324 (8I8O), max7325 (8P8O),
1108 max7326 (4I12O), max7327 (4P12O)
1109
1110 Board setup code must specify the model to use, and the start
1111 number for these GPIOs.
1112
1113config GPIO_MAX732X_IRQ
1114 bool "Interrupt controller support for MAX732x"
1115 depends on GPIO_MAX732X=y
1116 select GPIOLIB_IRQCHIP
1117 help
1118 Say yes here to enable the max732x to be used as an interrupt
1119 controller. It requires the driver to be built in the kernel.
1120
1121config GPIO_PCA953X
1122 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1123 select REGMAP_I2C
1124 help
1125 Say yes here to provide access to several register-oriented
1126 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1127 models include:
1128
1129 4 bits: pca9536, pca9537
1130
1131 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1132 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1133
1134 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1135 tca6416
1136
1137 24 bits: tca6424
1138
1139 40 bits: pca9505, pca9698
1140
1141config GPIO_PCA953X_IRQ
1142 bool "Interrupt controller support for PCA953x"
1143 depends on GPIO_PCA953X
1144 select GPIOLIB_IRQCHIP
1145 help
1146 Say yes here to enable the pca953x to be used as an interrupt
1147 controller.
1148
1149config GPIO_PCA9570
1150 tristate "PCA9570 4-Bit I2C GPO expander"
1151 help
1152 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1153
1154 To compile this driver as a module, choose M here: the module will
1155 be called gpio-pca9570.
1156
1157config GPIO_PCF857X
1158 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1159 select GPIOLIB_IRQCHIP
1160 select IRQ_DOMAIN
1161 help
1162 Say yes here to provide access to most "quasi-bidirectional" I2C
1163 GPIO expanders used for additional digital outputs or inputs.
1164 Most of these parts are from NXP, though TI is a second source for
1165 some of them. Compatible models include:
1166
1167 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1168 pca9670, pca9672, pca9674, pca9674a,
1169 max7328, max7329
1170
1171 16 bits: pcf8575, pcf8575c, pca8575,
1172 pca9671, pca9673, pca9675
1173
1174 Your board setup code will need to declare the expanders in
1175 use, and assign numbers to the GPIOs they expose. Those GPIOs
1176 can then be used from drivers and other kernel code, just like
1177 other GPIOs, but only accessible from task contexts.
1178
1179 This driver provides an in-kernel interface to those GPIOs using
1180 platform-neutral GPIO calls.
1181
1182config GPIO_TPIC2810
1183 tristate "TPIC2810 8-Bit I2C GPO expander"
1184 help
1185 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1186
1187 To compile this driver as a module, choose M here: the module will
1188 be called gpio-tpic2810.
1189
1190config GPIO_TS4900
1191 tristate "Technologic Systems FPGA I2C GPIO"
1192 depends on SOC_IMX6 || COMPILE_TEST
1193 select REGMAP_I2C
1194 help
1195 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1196 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1197
1198endmenu
1199
1200menu "MFD GPIO expanders"
1201
1202config GPIO_ADP5520
1203 tristate "GPIO Support for ADP5520 PMIC"
1204 depends on PMIC_ADP5520
1205 help
1206 This option enables support for on-chip GPIO found
1207 on Analog Devices ADP5520 PMICs.
1208
1209config GPIO_ALTERA_A10SR
1210 tristate "Altera Arria10 System Resource GPIO"
1211 depends on MFD_ALTERA_A10SR
1212 help
1213 Driver for Arria10 Development Kit GPIO expansion which
1214 includes reads of pushbuttons and DIP switches as well
1215 as writes to LEDs.
1216
1217config GPIO_ARIZONA
1218 tristate "Wolfson Microelectronics Arizona class devices"
1219 depends on MFD_ARIZONA
1220 help
1221 Support for GPIOs on Wolfson Arizona class devices.
1222
1223config GPIO_BD71815
1224 tristate "ROHM BD71815 PMIC GPIO support"
1225 depends on MFD_ROHM_BD71828
1226 help
1227 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1228 available on the ROHM PMIC.
1229
1230 This driver can also be built as a module. If so, the module
1231 will be called gpio-bd71815.
1232
1233config GPIO_BD71828
1234 tristate "ROHM BD71828 GPIO support"
1235 depends on MFD_ROHM_BD71828
1236 help
1237 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1238 available on the ROHM PMIC in total. The GPIOs are limited to
1239 outputs only and pins must be configured to GPIO outputs by
1240 OTP. Enable this only if you want to use these pins as outputs.
1241
1242 This driver can also be built as a module. If so, the module
1243 will be called gpio-bd71828.
1244
1245config GPIO_BD9571MWV
1246 tristate "ROHM BD9571 GPIO support"
1247 depends on MFD_BD9571MWV
1248 help
1249 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1250 available on the ROHM PMIC in total, both of which can also
1251 generate interrupts.
1252
1253 This driver can also be built as a module. If so, the module
1254 will be called gpio-bd9571mwv.
1255
1256config GPIO_CROS_EC
1257 tristate "ChromeOS EC GPIO support"
1258 depends on CROS_EC
1259 help
1260 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1261 cannot be set unless the system is unlocked.
1262
1263 This driver can also be built as a module. If so, the module
1264 will be called gpio-cros-ec.
1265
1266config GPIO_CRYSTAL_COVE
1267 tristate "GPIO support for Crystal Cove PMIC"
1268 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1269 select GPIOLIB_IRQCHIP
1270 help
1271 Support for GPIO pins on Crystal Cove PMIC.
1272
1273 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1274 inside.
1275
1276 This driver can also be built as a module. If so, the module will be
1277 called gpio-crystalcove.
1278
1279config GPIO_CS5535
1280 tristate "AMD CS5535/CS5536 GPIO support"
1281 depends on X86 || MIPS || COMPILE_TEST
1282 depends on MFD_CS5535
1283 help
1284 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1285 can be used for quite a number of things. The CS5535/6 is found on
1286 AMD Geode and Lemote Yeeloong devices.
1287
1288 If unsure, say N.
1289
1290config GPIO_DA9052
1291 tristate "Dialog DA9052 GPIO"
1292 depends on PMIC_DA9052
1293 help
1294 Say yes here to enable the GPIO driver for the DA9052 chip.
1295
1296config GPIO_DA9055
1297 tristate "Dialog Semiconductor DA9055 GPIO"
1298 depends on MFD_DA9055
1299 help
1300 Say yes here to enable the GPIO driver for the DA9055 chip.
1301
1302 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1303 be controlled by this driver.
1304
1305 If driver is built as a module it will be called gpio-da9055.
1306
1307config GPIO_DLN2
1308 tristate "Diolan DLN2 GPIO support"
1309 depends on MFD_DLN2
1310 select GPIOLIB_IRQCHIP
1311
1312 help
1313 Select this option to enable GPIO driver for the Diolan DLN2
1314 board.
1315
1316 This driver can also be built as a module. If so, the module
1317 will be called gpio-dln2.
1318
1319config HTC_EGPIO
1320 bool "HTC EGPIO support"
1321 depends on ARM
1322 help
1323 This driver supports the CPLD egpio chip present on
1324 several HTC phones. It provides basic support for input
1325 pins, output pins, and IRQs.
1326
1327config GPIO_ELKHARTLAKE
1328 tristate "Intel Elkhart Lake PSE GPIO support"
1329 depends on X86 || COMPILE_TEST
1330 select GPIO_TANGIER
1331 help
1332 Select this option to enable GPIO support for Intel Elkhart Lake
1333 PSE GPIO IP.
1334
1335 To compile this driver as a module, choose M here: the module will
1336 be called gpio-elkhartlake.
1337
1338config GPIO_JANZ_TTL
1339 tristate "Janz VMOD-TTL Digital IO Module"
1340 depends on MFD_JANZ_CMODIO
1341 help
1342 This enables support for the Janz VMOD-TTL Digital IO module.
1343 This driver provides support for driving the pins in output
1344 mode only. Input mode is not supported.
1345
1346config GPIO_KEMPLD
1347 tristate "Kontron ETX / COMexpress GPIO"
1348 depends on MFD_KEMPLD
1349 help
1350 This enables support for the PLD GPIO interface on some Kontron ETX
1351 and COMexpress (ETXexpress) modules.
1352
1353 This driver can also be built as a module. If so, the module will be
1354 called gpio-kempld.
1355
1356config GPIO_LJCA
1357 tristate "INTEL La Jolla Cove Adapter GPIO support"
1358 depends on USB_LJCA
1359 select GPIOLIB_IRQCHIP
1360 default USB_LJCA
1361 help
1362 Select this option to enable GPIO driver for the INTEL
1363 La Jolla Cove Adapter (LJCA) board.
1364
1365 This driver can also be built as a module. If so, the module
1366 will be called gpio-ljca.
1367
1368config GPIO_LP3943
1369 tristate "TI/National Semiconductor LP3943 GPIO expander"
1370 depends on MFD_LP3943
1371 help
1372 GPIO driver for LP3943 MFD.
1373 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1374 Open drain outputs are required for this usage.
1375
1376config GPIO_LP873X
1377 tristate "TI LP873X GPO"
1378 depends on MFD_TI_LP873X
1379 help
1380 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1381 on LP873X PMICs.
1382
1383 This driver can also be built as a module. If so, the module will be
1384 called gpio-lp873x.
1385
1386config GPIO_LP87565
1387 tristate "TI LP87565 GPIO"
1388 depends on MFD_TI_LP87565
1389 help
1390 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1391 on LP87565 PMICs.
1392
1393 This driver can also be built as a module. If so, the module will be
1394 called gpio-lp87565.
1395
1396config GPIO_MADERA
1397 tristate "Cirrus Logic Madera class codecs"
1398 depends on PINCTRL_MADERA
1399 help
1400 Support for GPIOs on Cirrus Logic Madera class codecs.
1401
1402config GPIO_MAX77620
1403 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1404 depends on MFD_MAX77620
1405 select GPIOLIB_IRQCHIP
1406 help
1407 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1408 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1409 driver also provides interrupt support for each of the GPIOs.
1410 Say yes here to enable the max77620 to be used as GPIO controller.
1411
1412config GPIO_MAX77650
1413 tristate "Maxim MAX77650/77651 GPIO support"
1414 depends on MFD_MAX77650
1415 help
1416 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1417 These chips have a single pin that can be configured as GPIO.
1418
1419config GPIO_PALMAS
1420 bool "TI PALMAS series PMICs GPIO"
1421 depends on MFD_PALMAS
1422 help
1423 Select this option to enable GPIO driver for the TI PALMAS
1424 series chip family.
1425
1426config GPIO_PMIC_EIC_SPRD
1427 tristate "Spreadtrum PMIC EIC support"
1428 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1429 depends on OF_GPIO
1430 select GPIOLIB_IRQCHIP
1431 help
1432 Say yes here to support Spreadtrum PMIC EIC device.
1433
1434config GPIO_RC5T583
1435 bool "RICOH RC5T583 GPIO"
1436 depends on MFD_RC5T583
1437 help
1438 Select this option to enable GPIO driver for the Ricoh RC5T583
1439 chip family.
1440 This driver provides the support for driving/reading the GPIO pins
1441 of RC5T583 device through standard GPIO library.
1442
1443config GPIO_SL28CPLD
1444 tristate "Kontron sl28cpld GPIO support"
1445 depends on MFD_SL28CPLD || COMPILE_TEST
1446 select GPIO_REGMAP
1447 select GPIOLIB_IRQCHIP
1448 select REGMAP_IRQ
1449 help
1450 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1451
1452 This driver can also be built as a module. If so, the module will be
1453 called gpio-sl28cpld.
1454
1455config GPIO_STMPE
1456 bool "STMPE GPIOs"
1457 depends on MFD_STMPE
1458 depends on OF_GPIO
1459 select GPIOLIB_IRQCHIP
1460 help
1461 This enables support for the GPIOs found on the STMPE I/O
1462 Expanders.
1463
1464config GPIO_TC3589X
1465 bool "TC3589X GPIOs"
1466 depends on MFD_TC3589X
1467 depends on OF_GPIO
1468 select GPIOLIB_IRQCHIP
1469 help
1470 This enables support for the GPIOs found on the TC3589X
1471 I/O Expander.
1472
1473config GPIO_TIMBERDALE
1474 bool "Support for timberdale GPIO IP"
1475 depends on MFD_TIMBERDALE
1476 help
1477 Add support for the GPIO IP in the timberdale FPGA.
1478
1479config GPIO_TN48M_CPLD
1480 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1481 depends on MFD_TN48M_CPLD
1482 select GPIO_REGMAP
1483 help
1484 This enables support for the GPIOs found on the Delta
1485 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1486 they are input-only or output-only type.
1487
1488 This driver can also be built as a module. If so, the
1489 module will be called gpio-tn48m.
1490
1491config GPIO_TPS65086
1492 tristate "TI TPS65086 GPO"
1493 depends on MFD_TPS65086
1494 help
1495 This driver supports the GPO on TI TPS65086x PMICs.
1496
1497config GPIO_TPS65218
1498 tristate "TPS65218 GPIO"
1499 depends on MFD_TPS65218
1500 help
1501 Select this option to enable GPIO driver for the TPS65218
1502 chip family.
1503
1504config GPIO_TPS65219
1505 tristate "TPS65219 GPIO"
1506 depends on MFD_TPS65219
1507 default MFD_TPS65219
1508 help
1509 Select this option to enable GPIO driver for the TPS65219 chip
1510 family.
1511 GPIO0 is statically configured as either input or output prior to
1512 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1513 is statically configured by NVM. GPIO0 can't be used as a generic
1514 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1515 MULTI_DEVICE_EN=1.
1516
1517 This driver can also be built as a module. If so, the module will be
1518 called gpio_tps65219.
1519
1520config GPIO_TPS6586X
1521 bool "TPS6586X GPIO"
1522 depends on MFD_TPS6586X
1523 help
1524 Select this option to enable GPIO driver for the TPS6586X
1525 chip family.
1526
1527config GPIO_TPS65910
1528 bool "TPS65910 GPIO"
1529 depends on MFD_TPS65910
1530 help
1531 Select this option to enable GPIO driver for the TPS65910
1532 chip family.
1533
1534config GPIO_TPS65912
1535 tristate "TI TPS65912 GPIO"
1536 depends on MFD_TPS65912
1537 help
1538 This driver supports TPS65912 GPIO chip.
1539
1540config GPIO_TPS68470
1541 tristate "TPS68470 GPIO"
1542 depends on INTEL_SKL_INT3472
1543 help
1544 Select this option to enable GPIO driver for the TPS68470
1545 chip family.
1546 There are 7 GPIOs and few sensor-related GPIOs supported
1547 by the TPS68470. While the 7 GPIOs can be configured as
1548 input or output as appropriate, the sensor related GPIOs
1549 are "output only" GPIOs.
1550
1551config GPIO_TQMX86
1552 tristate "TQ-Systems QTMX86 GPIO"
1553 depends on MFD_TQMX86 || COMPILE_TEST
1554 depends on HAS_IOPORT_MAP
1555 select GPIOLIB_IRQCHIP
1556 help
1557 This driver supports GPIO on the TQMX86 IO controller.
1558
1559config GPIO_TWL4030
1560 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1561 depends on TWL4030_CORE
1562 help
1563 Say yes here to access the GPIO signals of various multi-function
1564 power management chips from Texas Instruments.
1565
1566config GPIO_TWL6040
1567 tristate "TWL6040 GPO"
1568 depends on TWL6040_CORE
1569 help
1570 Say yes here to access the GPO signals of twl6040
1571 audio chip from Texas Instruments.
1572
1573config GPIO_WHISKEY_COVE
1574 tristate "GPIO support for Whiskey Cove PMIC"
1575 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1576 select GPIOLIB_IRQCHIP
1577 help
1578 Support for GPIO pins on Whiskey Cove PMIC.
1579
1580 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1581 inside.
1582
1583 This driver can also be built as a module. If so, the module will be
1584 called gpio-wcove.
1585
1586config GPIO_WM831X
1587 tristate "WM831x GPIOs"
1588 depends on MFD_WM831X
1589 help
1590 Say yes here to access the GPIO signals of WM831x power management
1591 chips from Wolfson Microelectronics.
1592
1593config GPIO_WM8350
1594 tristate "WM8350 GPIOs"
1595 depends on MFD_WM8350
1596 help
1597 Say yes here to access the GPIO signals of WM8350 power management
1598 chips from Wolfson Microelectronics.
1599
1600config GPIO_WM8994
1601 tristate "WM8994 GPIOs"
1602 depends on MFD_WM8994
1603 help
1604 Say yes here to access the GPIO signals of WM8994 audio hub
1605 CODECs from Wolfson Microelectronics.
1606
1607endmenu
1608
1609menu "PCI GPIO expanders"
1610 depends on PCI
1611
1612config GPIO_AMD8111
1613 tristate "AMD 8111 GPIO driver"
1614 depends on X86 || COMPILE_TEST
1615 depends on HAS_IOPORT_MAP
1616 help
1617 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1618
1619 Note that usually system firmware/ACPI handles GPIO pins on their
1620 own and users might easily break their systems with uncareful usage
1621 of this driver!
1622
1623 If unsure, say N
1624
1625config GPIO_BT8XX
1626 tristate "BT8XX GPIO abuser"
1627 depends on VIDEO_BT848=n
1628 help
1629 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1630 as a cheap PCI GPIO card.
1631
1632 This chip can be found on Miro, Hauppauge and STB TV-cards.
1633
1634 The card needs to be physically altered for using it as a
1635 GPIO card. For more information on how to build a GPIO card
1636 from a BT8xx TV card, see the documentation file at
1637 Documentation/driver-api/gpio/bt8xxgpio.rst
1638
1639 If unsure, say N.
1640
1641config GPIO_MERRIFIELD
1642 tristate "Intel Merrifield GPIO support"
1643 depends on X86_INTEL_MID
1644 select GPIO_TANGIER
1645 help
1646 Say Y here to support Intel Merrifield GPIO.
1647
1648config GPIO_MLXBF
1649 tristate "Mellanox BlueField SoC GPIO"
1650 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1651 select GPIO_GENERIC
1652 help
1653 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1654
1655config GPIO_MLXBF2
1656 tristate "Mellanox BlueField 2 SoC GPIO"
1657 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1658 select GPIO_GENERIC
1659 select GPIOLIB_IRQCHIP
1660 help
1661 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1662
1663config GPIO_MLXBF3
1664 tristate "Mellanox BlueField 3 SoC GPIO"
1665 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1666 select GPIO_GENERIC
1667 select GPIOLIB_IRQCHIP
1668 help
1669 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1670 This GPIO controller supports interrupt handling and enables the
1671 manipulation of certain GPIO pins.
1672 This controller should be used in parallel with pinctrl-mlxbf3 to
1673 control the desired GPIOs.
1674 This driver can also be built as a module called mlxbf3-gpio.
1675
1676config GPIO_ML_IOH
1677 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1678 depends on X86 || COMPILE_TEST
1679 select GENERIC_IRQ_CHIP
1680 help
1681 ML7213 is companion chip for Intel Atom E6xx series.
1682 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1683 Hub) which is for IVI (In-Vehicle Infotainment) use.
1684 This driver can access the IOH's GPIO device.
1685
1686config GPIO_PCH
1687 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1688 depends on X86_32 || MIPS || COMPILE_TEST
1689 select GENERIC_IRQ_CHIP
1690 help
1691 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1692 which is an IOH (Input/Output Hub) for x86 embedded processor.
1693 This driver can access PCH GPIO device.
1694
1695 This driver also can be used for LAPIS Semiconductor IOH (Input/
1696 Output Hub), ML7223 and ML7831.
1697 ML7223 IOH is for MP (Media Phone) use.
1698 ML7831 IOH is for general purpose use.
1699 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1700 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1701
1702config GPIO_PCI_IDIO_16
1703 tristate "ACCES PCI-IDIO-16 GPIO support"
1704 select REGMAP_MMIO
1705 select GPIO_IDIO_16
1706 help
1707 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1708 generated when any of the inputs change state (low to high or high to
1709 low). Input filter control is not supported by this driver, and the
1710 input filters are deactivated by this driver.
1711
1712config GPIO_PCIE_IDIO_24
1713 tristate "ACCES PCIe-IDIO-24 GPIO support"
1714 select REGMAP_IRQ
1715 select REGMAP_MMIO
1716 select GPIOLIB_IRQCHIP
1717 select GPIO_REGMAP
1718 help
1719 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1720 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1721 when any of the inputs change state (low to high or high to low).
1722 Input filter control is not supported by this driver, and the input
1723 filters are deactivated by this driver.
1724
1725config GPIO_RDC321X
1726 tristate "RDC R-321x GPIO support"
1727 select MFD_CORE
1728 select MFD_RDC321X
1729 help
1730 Support for the RDC R321x SoC GPIOs over southbridge
1731 PCI configuration space.
1732
1733config GPIO_SODAVILLE
1734 bool "Intel Sodaville GPIO support"
1735 depends on X86 && OF
1736 select GPIO_GENERIC
1737 select GENERIC_IRQ_CHIP
1738 help
1739 Say Y here to support Intel Sodaville GPIO.
1740
1741endmenu
1742
1743menu "SPI GPIO expanders"
1744 depends on SPI_MASTER
1745
1746config GPIO_74X164
1747 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1748 depends on OF_GPIO
1749 help
1750 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1751 shift registers. This driver can be used to provide access
1752 to more GPIO outputs.
1753
1754config GPIO_MAX3191X
1755 tristate "Maxim MAX3191x industrial serializer"
1756 select CRC8
1757 help
1758 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1759 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1760 chip to make 8 digital 24V inputs available via SPI. Supports
1761 CRC checksums to guard against electromagnetic interference,
1762 as well as undervoltage and overtemperature detection.
1763
1764config GPIO_MAX7301
1765 tristate "Maxim MAX7301 GPIO expander"
1766 select GPIO_MAX730X
1767 help
1768 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1769
1770config GPIO_MC33880
1771 tristate "Freescale MC33880 high-side/low-side switch"
1772 help
1773 SPI driver for Freescale MC33880 high-side/low-side switch.
1774 This provides GPIO interface supporting inputs and outputs.
1775
1776config GPIO_PISOSR
1777 tristate "Generic parallel-in/serial-out shift register"
1778 help
1779 GPIO driver for SPI compatible parallel-in/serial-out shift
1780 registers. These are input only devices.
1781
1782config GPIO_XRA1403
1783 tristate "EXAR XRA1403 16-bit GPIO expander"
1784 select REGMAP_SPI
1785 help
1786 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1787
1788config GPIO_MOXTET
1789 tristate "Turris Mox Moxtet bus GPIO expander"
1790 depends on MOXTET
1791 help
1792 Say yes here if you are building for the Turris Mox router.
1793 This is the driver needed for configuring the GPIOs via the Moxtet
1794 bus. For example the Mox module with SFP cage needs this driver
1795 so that phylink can use corresponding GPIOs.
1796
1797endmenu
1798
1799menu "USB GPIO expanders"
1800 depends on USB
1801
1802config GPIO_VIPERBOARD
1803 tristate "Viperboard GPIO a & b support"
1804 depends on MFD_VIPERBOARD
1805 help
1806 Say yes here to access the GPIO signals of Nano River
1807 Technologies Viperboard. There are two GPIO chips on the
1808 board: gpioa and gpiob.
1809 See viperboard API specification and Nano
1810 River Tech's viperboard.h for detailed meaning
1811 of the module parameters.
1812
1813endmenu
1814
1815menu "Virtual GPIO drivers"
1816
1817config GPIO_AGGREGATOR
1818 tristate "GPIO Aggregator"
1819 help
1820 Say yes here to enable the GPIO Aggregator, which provides a way to
1821 aggregate existing GPIO lines into a new virtual GPIO chip.
1822 This can serve the following purposes:
1823 - Assign permissions for a collection of GPIO lines to a user,
1824 - Export a collection of GPIO lines to a virtual machine,
1825 - Provide a generic driver for a GPIO-operated device in an
1826 industrial control context, to be operated from userspace using
1827 the GPIO chardev interface.
1828
1829config GPIO_LATCH
1830 tristate "GPIO latch driver"
1831 help
1832 Say yes here to enable a driver for GPIO multiplexers based on latches
1833 connected to other GPIOs.
1834
1835config GPIO_MOCKUP
1836 tristate "GPIO Testing Driver (DEPRECATED)"
1837 select IRQ_SIM
1838 help
1839 This module is DEPRECATED. Please consider using gpio-sim instead.
1840
1841 This enables GPIO Testing driver, which provides a way to test GPIO
1842 subsystem through sysfs (or char device) and debugfs.
1843 User could use it through the script in
1844 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1845 it.
1846
1847config GPIO_VIRTIO
1848 tristate "VirtIO GPIO support"
1849 depends on VIRTIO
1850 select GPIOLIB_IRQCHIP
1851 help
1852 Say Y here to enable guest support for virtio-based GPIO controllers.
1853
1854 These virtual GPIOs can be routed to real GPIOs or attached to
1855 simulators on the host (like QEMU).
1856
1857config GPIO_SIM
1858 tristate "GPIO Simulator Module"
1859 select IRQ_SIM
1860 select CONFIGFS_FS
1861 help
1862 This enables the GPIO simulator - a configfs-based GPIO testing
1863 driver.
1864
1865endmenu
1866
1867endif