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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 "Character device (/dev/gpiochipN) support" if EXPERT
74 default y
75 help
76 Say Y here to add the character device /dev/gpiochipN interface
77 for GPIOs. The character device allows userspace to control GPIOs
78 using ioctl() operations.
79
80 Only say N if you are sure that the GPIO character device is not
81 required.
82
83 If unsure, say Y.
84
85config GPIO_CDEV_V1
86 bool "Support GPIO ABI Version 1"
87 default y
88 depends on GPIO_CDEV
89 help
90 Say Y here to support version 1 of the GPIO CDEV ABI.
91
92 This ABI version is deprecated.
93 Please use the latest ABI for new developments.
94
95 If unsure, say Y.
96
97config GPIO_GENERIC
98 depends on HAS_IOMEM # Only for IOMEM drivers
99 tristate
100
101config GPIO_REGMAP
102 select REGMAP
103 tristate
104
105config GPIO_SWNODE_UNDEFINED
106 bool
107 help
108 This adds a special place holder for software nodes to contain an
109 undefined GPIO reference, this is primarily used by SPI to allow a
110 list of GPIO chip selects to mark a certain chip select as being
111 controlled the SPI device's internal chip select mechanism and not
112 a GPIO.
113
114# put drivers in the right section, in alphabetical order
115
116# This symbol is selected by both I2C and SPI expanders
117config GPIO_MAX730X
118 tristate
119
120config GPIO_IDIO_16
121 tristate
122 select REGMAP_IRQ
123 select GPIOLIB_IRQCHIP
124 select GPIO_REGMAP
125 help
126 Enables support for the idio-16 library functions. The idio-16 library
127 provides functions to facilitate communication with devices within the
128 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
129
130 If built as a module its name will be gpio-idio-16.
131
132menu "Memory mapped GPIO drivers"
133 depends on HAS_IOMEM
134
135config GPIO_74XX_MMIO
136 tristate "GPIO driver for 74xx-ICs with MMIO access"
137 depends on OF_GPIO
138 select GPIO_GENERIC
139 help
140 Say yes here to support GPIO functionality for 74xx-compatible ICs
141 with MMIO access. Compatible models include:
142 1 bit: 741G125 (Input), 741G74 (Output)
143 2 bits: 742G125 (Input), 7474 (Output)
144 4 bits: 74125 (Input), 74175 (Output)
145 6 bits: 74365 (Input), 74174 (Output)
146 8 bits: 74244 (Input), 74273 (Output)
147 16 bits: 741624 (Input), 7416374 (Output)
148
149config GPIO_ALTERA
150 tristate "Altera GPIO"
151 select GPIOLIB_IRQCHIP
152 help
153 Say Y or M here to build support for the Altera PIO device.
154
155 If driver is built as a module it will be called gpio-altera.
156
157config GPIO_AMDPT
158 tristate "AMD Promontory GPIO support"
159 depends on ACPI
160 select GPIO_GENERIC
161 help
162 Driver for GPIO functionality on Promontory IOHub.
163 Requires ACPI ASL code to enumerate as a platform device.
164
165config GPIO_ASPEED
166 tristate "Aspeed GPIO support"
167 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
168 select GPIOLIB_IRQCHIP
169 help
170 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
171
172config GPIO_ASPEED_SGPIO
173 bool "Aspeed SGPIO support"
174 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
175 select GPIO_GENERIC
176 select GPIOLIB_IRQCHIP
177 help
178 Say Y here to support Aspeed AST2500 SGPIO functionality.
179
180config GPIO_ATH79
181 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
182 default y if ATH79
183 depends on ATH79 || COMPILE_TEST
184 select GPIO_GENERIC
185 select GPIOLIB_IRQCHIP
186 help
187 Select this option to enable GPIO driver for
188 Atheros AR71XX/AR724X/AR913X SoC devices.
189
190config GPIO_RASPBERRYPI_EXP
191 tristate "Raspberry Pi 3 GPIO Expander"
192 default RASPBERRYPI_FIRMWARE
193 depends on OF_GPIO
194 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
195 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
196 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
197 help
198 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
199 the firmware mailbox to communicate with VideoCore on BCM283x chips.
200
201config GPIO_BCM_KONA
202 bool "Broadcom Kona GPIO"
203 depends on ARCH_BCM_MOBILE || COMPILE_TEST
204 help
205 Turn on GPIO support for Broadcom "Kona" chips.
206
207config GPIO_BCM_XGS_IPROC
208 tristate "BRCM XGS iProc GPIO support"
209 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
210 select GPIO_GENERIC
211 select GPIOLIB_IRQCHIP
212 default ARCH_BCM_IPROC
213 help
214 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
215
216config GPIO_BRCMSTB
217 tristate "BRCMSTB GPIO support"
218 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
219 depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST)
220 select GPIO_GENERIC
221 select IRQ_DOMAIN
222 help
223 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
224
225config GPIO_CADENCE
226 tristate "Cadence GPIO support"
227 depends on OF_GPIO
228 select GPIO_GENERIC
229 select GPIOLIB_IRQCHIP
230 help
231 Say yes here to enable support for Cadence GPIO controller.
232
233config GPIO_CLPS711X
234 tristate "CLPS711X GPIO support"
235 depends on ARCH_CLPS711X || COMPILE_TEST
236 select GPIO_GENERIC
237 help
238 Say yes here to support GPIO on CLPS711X SoCs.
239
240config GPIO_DAVINCI
241 tristate "TI Davinci/Keystone GPIO support"
242 default y if ARCH_DAVINCI
243 depends on ((ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)) || COMPILE_TEST
244 help
245 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
246
247config GPIO_DWAPB
248 tristate "Synopsys DesignWare APB GPIO driver"
249 select GPIO_GENERIC
250 select GPIOLIB_IRQCHIP
251 help
252 Say Y or M here to build support for the Synopsys DesignWare APB
253 GPIO block.
254
255config GPIO_EIC_SPRD
256 tristate "Spreadtrum EIC support"
257 depends on ARCH_SPRD || COMPILE_TEST
258 depends on OF_GPIO
259 select GPIOLIB_IRQCHIP
260 help
261 Say yes here to support Spreadtrum EIC device.
262
263config GPIO_EM
264 tristate "Emma Mobile GPIO"
265 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
266 help
267 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
268
269config GPIO_EN7523
270 tristate "Airoha GPIO support"
271 depends on ARCH_AIROHA
272 default ARCH_AIROHA
273 select GPIO_GENERIC
274 select GPIOLIB_IRQCHIP
275 help
276 Say Y or M here to support the GPIO controller block on the
277 Airoha EN7523 SoC. It supports two banks of 32 GPIOs.
278
279config GPIO_EP93XX
280 def_bool y
281 depends on ARCH_EP93XX
282 select GPIO_GENERIC
283 select GPIOLIB_IRQCHIP
284
285config GPIO_EXAR
286 tristate "Support for GPIO pins on XR17V352/354/358"
287 depends on SERIAL_8250_EXAR
288 select REGMAP_MMIO
289 help
290 Selecting this option will enable handling of GPIO pins present
291 on Exar XR17V352/354/358 chips.
292
293config GPIO_GE_FPGA
294 bool "GE FPGA based GPIO"
295 depends on GE_FPGA || COMPILE_TEST
296 select GPIO_GENERIC
297 help
298 Support for common GPIO functionality provided on some GE Single Board
299 Computers.
300
301 This driver provides basic support (configure as input or output, read
302 and write pin state) for GPIO implemented in a number of GE single
303 board computers.
304
305config GPIO_FTGPIO010
306 bool "Faraday FTGPIO010 GPIO"
307 depends on OF_GPIO
308 select GPIO_GENERIC
309 select GPIOLIB_IRQCHIP
310 default (ARCH_GEMINI || ARCH_MOXART)
311 help
312 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
313 Cortina systems Gemini platforms, Moxa ART and others.
314
315config GPIO_GENERIC_PLATFORM
316 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
317 select GPIO_GENERIC
318 help
319 Say yes here to support basic platform_device memory-mapped GPIO controllers.
320
321config GPIO_GRANITERAPIDS
322 tristate "Intel Granite Rapids-D vGPIO support"
323 depends on X86 || COMPILE_TEST
324 select GPIOLIB_IRQCHIP
325 help
326 Select this to enable virtual GPIO support on platforms with the
327 following SoCs:
328
329 - Intel Granite Rapids-D
330
331 The driver enables basic GPIO functionality and implements interrupt
332 support. The virtual GPIO driver controls GPIO lines via a firmware
333 interface. The physical GPIO pins reside on device that is external
334 from the main SoC package, such as a BMC or a CPLD.
335
336 To compile this driver as a module, choose M here: the module will
337 be called gpio-graniterapids.
338
339config GPIO_GRGPIO
340 tristate "Aeroflex Gaisler GRGPIO support"
341 depends on OF || COMPILE_TEST
342 select GPIO_GENERIC
343 select IRQ_DOMAIN
344 help
345 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
346 VHDL IP core library.
347
348config GPIO_HISI
349 tristate "HiSilicon GPIO controller driver"
350 depends on ARM64 || COMPILE_TEST
351 select GPIO_GENERIC
352 select GPIOLIB_IRQCHIP
353 help
354 Say Y or M here to build support for the HiSilicon GPIO controller
355 driver GPIO block.
356 This GPIO controller supports double-edge interrupt and multi-core
357 concurrent access.
358
359config GPIO_HLWD
360 tristate "Nintendo Wii (Hollywood) GPIO"
361 depends on OF_GPIO
362 select GPIO_GENERIC
363 select GPIOLIB_IRQCHIP
364 help
365 Select this to support the GPIO controller of the Nintendo Wii.
366
367 If unsure, say N.
368
369config GPIO_ICH
370 tristate "Intel ICH GPIO"
371 depends on X86
372 depends on LPC_ICH
373 help
374 Say yes here to support the GPIO functionality of a number of Intel
375 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
376 ICH9, ICH10, Series 5/3400 (e.g. Ibex Peak), Series 6/C200 (e.g.
377 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
378
379 If unsure, say N.
380
381config GPIO_IMX_SCU
382 def_bool y
383 depends on IMX_SCU
384
385config GPIO_IXP4XX
386 bool "Intel IXP4xx GPIO"
387 depends on ARCH_IXP4XX
388 depends on OF
389 select GPIO_GENERIC
390 select GPIOLIB_IRQCHIP
391 select IRQ_DOMAIN_HIERARCHY
392 help
393 Say yes here to support the GPIO functionality of a number of Intel
394 IXP4xx series of chips.
395
396 If unsure, say N.
397
398config GPIO_LOGICVC
399 tristate "Xylon LogiCVC GPIO support"
400 depends on MFD_SYSCON && OF
401 help
402 Say yes here to support GPIO functionality of the Xylon LogiCVC
403 programmable logic block.
404
405config GPIO_LOONGSON
406 bool "Loongson-2/3 GPIO support"
407 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
408 help
409 Driver for GPIO functionality on Loongson-2F/3A/3B processors.
410
411config GPIO_LOONGSON_64BIT
412 tristate "Loongson 64 bit GPIO support"
413 depends on LOONGARCH || COMPILE_TEST
414 depends on OF_GPIO
415 select GPIO_GENERIC
416 help
417 Say yes here to support the GPIO functionality of a number of
418 Loongson series of chips. The Loongson GPIO controller supports
419 up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
420 the remaining 56 are reused with other functions, with edge or
421 level triggered interrupts.
422
423config GPIO_LPC18XX
424 tristate "NXP LPC18XX/43XX GPIO support"
425 default y if ARCH_LPC18XX
426 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
427 select IRQ_DOMAIN_HIERARCHY
428 help
429 Select this option to enable GPIO driver for
430 NXP LPC18XX/43XX devices.
431
432config GPIO_LPC32XX
433 tristate "NXP LPC32XX GPIO support"
434 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
435 help
436 Select this option to enable GPIO driver for
437 NXP LPC32XX devices.
438
439config GPIO_MB86S7X
440 tristate "GPIO support for Fujitsu MB86S7x Platforms"
441 help
442 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
443
444config GPIO_MENZ127
445 tristate "MEN 16Z127 GPIO support"
446 depends on MCB
447 select GPIO_GENERIC
448 help
449 Say yes here to support the MEN 16Z127 GPIO Controller.
450
451config GPIO_MM_LANTIQ
452 bool "Lantiq Memory mapped GPIOs"
453 depends on LANTIQ && SOC_XWAY
454 select OF_GPIO_MM_GPIOCHIP
455 help
456 This enables support for memory mapped GPIOs on the External Bus Unit
457 (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
458 created by attaching a 16-bit latch to the bus.
459
460config GPIO_MPC5200
461 def_bool y
462 depends on PPC_MPC52xx
463 select OF_GPIO_MM_GPIOCHIP
464
465config GPIO_MPC8XXX
466 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
467 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
468 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
469 COMPILE_TEST
470 select GPIO_GENERIC
471 select IRQ_DOMAIN
472 help
473 Say Y here if you're going to use hardware that connects to the
474 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
475
476config GPIO_MT7621
477 bool "Mediatek MT7621 GPIO Support"
478 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
479 depends on OF_GPIO
480 select GPIO_GENERIC
481 select GPIOLIB_IRQCHIP
482 help
483 Say yes here to support the Mediatek MT7621 SoC GPIO device.
484
485config GPIO_MVEBU
486 bool "Marvell Orion and EBU GPIO support" if COMPILE_TEST
487 depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
488 default PLAT_ORION || ARCH_MVEBU
489 select GENERIC_IRQ_CHIP
490 select REGMAP_MMIO
491
492config GPIO_MXC
493 tristate "i.MX GPIO support"
494 depends on ARCH_MXC || COMPILE_TEST
495 select GPIO_GENERIC
496 select GENERIC_IRQ_CHIP
497
498config GPIO_MXS
499 bool "Freescale MXS GPIO support" if COMPILE_TEST
500 depends on ARCH_MXS || COMPILE_TEST
501 default y if ARCH_MXS
502 select GPIO_GENERIC
503 select GENERIC_IRQ_CHIP
504
505config GPIO_NOMADIK
506 bool "Nomadik GPIO driver"
507 depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
508 select GPIOLIB_IRQCHIP
509 help
510 Say yes here to support the Nomadik SoC GPIO block. This block is also
511 used by the Mobileye EyeQ5 SoC.
512
513 It handles up to 32 GPIOs per bank, that can all be interrupt sources.
514 It is deeply interconnected with the associated pinctrl driver as GPIO
515 registers handle muxing ("alternate functions") as well.
516
517config GPIO_NPCM_SGPIO
518 bool "Nuvoton SGPIO support"
519 depends on ARCH_NPCM || COMPILE_TEST
520 select GPIOLIB_IRQCHIP
521 help
522 Say Y here to support Nuvoton NPCM7XX/NPCM8XX SGPIO functionality.
523
524config GPIO_OCTEON
525 tristate "Cavium OCTEON GPIO"
526 depends on CAVIUM_OCTEON_SOC
527 default y
528 help
529 Say yes here to support the on-chip GPIO lines on the OCTEON
530 family of SOCs.
531
532config GPIO_OMAP
533 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
534 default y if ARCH_OMAP
535 depends on ARM
536 select GENERIC_IRQ_CHIP
537 select GPIOLIB_IRQCHIP
538 help
539 Say yes here to enable GPIO support for TI OMAP SoCs.
540
541config GPIO_PL061
542 tristate "PrimeCell PL061 GPIO support"
543 depends on ARM_AMBA
544 select IRQ_DOMAIN
545 select GPIOLIB_IRQCHIP
546 help
547 Say yes here to support the PrimeCell PL061 GPIO device.
548
549config GPIO_POLARFIRE_SOC
550 bool "Microchip FPGA GPIO support"
551 select REGMAP_MMIO
552 help
553 Say yes here to support the GPIO controllers on Microchip FPGAs.
554
555config GPIO_PXA
556 bool "PXA GPIO support"
557 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
558 help
559 Say yes here to support the PXA GPIO device.
560
561config GPIO_RCAR
562 tristate "Renesas R-Car and RZ/G GPIO support"
563 depends on ARCH_RENESAS || COMPILE_TEST
564 select GPIOLIB_IRQCHIP
565 help
566 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
567
568config GPIO_RDA
569 bool "RDA Micro GPIO controller support"
570 depends on ARCH_RDA || COMPILE_TEST
571 depends on OF_GPIO
572 select GPIO_GENERIC
573 select GPIOLIB_IRQCHIP
574 help
575 Say Y here to support RDA Micro GPIO controller.
576
577config GPIO_REALTEK_OTTO
578 tristate "Realtek Otto GPIO support"
579 depends on MACH_REALTEK_RTL
580 default MACH_REALTEK_RTL
581 select GPIO_GENERIC
582 select GPIOLIB_IRQCHIP
583 help
584 The GPIO controller on the Otto MIPS platform supports up to two
585 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
586 are grouped in four 8-bit wide ports.
587
588 When built as a module, the module will be called realtek_otto_gpio.
589
590config GPIO_REG
591 bool
592 help
593 A 32-bit single register GPIO fixed in/out implementation. This
594 can be used to represent any register as a set of GPIO signals.
595
596config GPIO_ROCKCHIP
597 tristate "Rockchip GPIO support"
598 depends on ARCH_ROCKCHIP || COMPILE_TEST
599 select GENERIC_IRQ_CHIP
600 select GPIOLIB_IRQCHIP
601 default ARCH_ROCKCHIP
602 help
603 Say yes here to support GPIO on Rockchip SoCs.
604
605config GPIO_RTD
606 tristate "Realtek DHC GPIO support"
607 depends on ARCH_REALTEK
608 default y
609 select GPIOLIB_IRQCHIP
610 help
611 This option enables support for GPIOs found on Realtek DHC(Digital
612 Home Center) SoCs family, including RTD1295, RTD1315E, RTD1319,
613 RTD1319D, RTD1395, RTD1619 and RTD1619B.
614
615 Say yes here to support GPIO functionality and GPIO interrupt on
616 Realtek DHC SoCs.
617
618config GPIO_SAMA5D2_PIOBU
619 tristate "SAMA5D2 PIOBU GPIO support"
620 depends on MFD_SYSCON
621 depends on OF_GPIO
622 depends on ARCH_AT91 || COMPILE_TEST
623 select GPIO_SYSCON
624 help
625 Say yes here to use the PIOBU pins as GPIOs.
626
627 PIOBU pins on the SAMA5D2 can be used as GPIOs.
628 The difference from regular GPIOs is that they
629 maintain their value during backup/self-refresh.
630
631config GPIO_SIFIVE
632 tristate "SiFive GPIO support"
633 depends on OF_GPIO
634 select IRQ_DOMAIN_HIERARCHY
635 select GPIO_GENERIC
636 select GPIOLIB_IRQCHIP
637 select REGMAP_MMIO
638 help
639 Say yes here to support the GPIO device on SiFive SoCs.
640
641config GPIO_SIOX
642 tristate "SIOX GPIO support"
643 depends on SIOX
644 select GPIOLIB_IRQCHIP
645 help
646 Say yes here to support SIOX I/O devices. These are units connected
647 via a SIOX bus and have a number of fixed-direction I/O lines.
648
649config GPIO_SNPS_CREG
650 bool "Synopsys GPIO via CREG (Control REGisters) driver"
651 depends on ARC || COMPILE_TEST
652 depends on OF_GPIO
653 help
654 This driver supports GPIOs via CREG on various Synopsys SoCs.
655 This is a single-register MMIO GPIO driver for complex cases
656 where only several fields in register belong to GPIO lines and
657 each GPIO line owns a field with different length and on/off value.
658
659config GPIO_SPEAR_SPICS
660 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
661 depends on PLAT_SPEAR
662 select GENERIC_IRQ_CHIP
663 help
664 Say yes here to support ST SPEAr SPI Chip Select as GPIO device.
665
666config GPIO_SPRD
667 tristate "Spreadtrum GPIO support"
668 depends on ARCH_SPRD || COMPILE_TEST
669 depends on OF_GPIO
670 select GPIOLIB_IRQCHIP
671 help
672 Say yes here to support Spreadtrum GPIO device.
673
674config GPIO_STP_XWAY
675 bool "XWAY STP GPIOs"
676 depends on SOC_XWAY || COMPILE_TEST
677 depends on OF_GPIO
678 help
679 This enables support for the Serial To Parallel (STP) unit found on
680 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
681 that can be up to 24 bits. This peripheral is aimed at driving LEDs.
682 Some of the GPIOs/LEDs can be auto updated by the SoC with DSL and
683 phy status.
684
685config GPIO_SYSCON
686 tristate "GPIO based on SYSCON"
687 depends on MFD_SYSCON && OF
688 help
689 Say yes here to support GPIO functionality though SYSCON driver.
690
691config GPIO_TANGIER
692 tristate
693 select GPIOLIB_IRQCHIP
694 help
695 GPIO support for Intel Tangier and compatible platforms.
696 Currently supported:
697 - Elkhart Lake
698 - Merrifield
699
700 If built as a module its name will be gpio-tangier.
701
702config GPIO_TB10X
703 bool
704 select GPIO_GENERIC
705 select GENERIC_IRQ_CHIP
706 select OF_GPIO
707
708config GPIO_TEGRA
709 tristate "NVIDIA Tegra GPIO support"
710 default ARCH_TEGRA
711 depends on ARCH_TEGRA || COMPILE_TEST
712 depends on OF_GPIO
713 select GPIOLIB_IRQCHIP
714 select IRQ_DOMAIN_HIERARCHY
715 help
716 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
717
718config GPIO_TEGRA186
719 tristate "NVIDIA Tegra186 GPIO support"
720 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC
721 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || ARCH_TEGRA_234_SOC || COMPILE_TEST
722 depends on OF_GPIO
723 select GPIOLIB_IRQCHIP
724 select IRQ_DOMAIN_HIERARCHY
725 help
726 Say yes here to support GPIO pins on NVIDIA Tegra186, 194 and 234 SoCs.
727
728config GPIO_TS4800
729 tristate "TS-4800 DIO blocks and compatibles"
730 depends on OF_GPIO
731 depends on SOC_IMX51 || COMPILE_TEST
732 select GPIO_GENERIC
733 help
734 This driver support TS-4800 FPGA GPIO controllers.
735
736config GPIO_THUNDERX
737 tristate "Cavium ThunderX/OCTEON-TX GPIO"
738 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
739 depends on PCI_MSI
740 select GPIOLIB_IRQCHIP
741 select IRQ_DOMAIN_HIERARCHY
742 select IRQ_FASTEOI_HIERARCHY_HANDLERS
743 help
744 Say yes here to support the on-chip GPIO lines on the ThunderX
745 and OCTEON-TX families of SoCs.
746
747config GPIO_UNIPHIER
748 tristate "UniPhier GPIO support"
749 depends on ARCH_UNIPHIER || COMPILE_TEST
750 depends on OF_GPIO
751 select IRQ_DOMAIN_HIERARCHY
752 help
753 Say yes here to support UniPhier GPIOs.
754
755config GPIO_VF610
756 bool "VF610 GPIO support"
757 default y if SOC_VF610
758 depends on ARCH_MXC || COMPILE_TEST
759 select GPIOLIB_IRQCHIP
760 help
761 Say yes here to support i.MX or Vybrid vf610 GPIOs.
762
763config GPIO_VISCONTI
764 tristate "Toshiba Visconti GPIO support"
765 depends on ARCH_VISCONTI || COMPILE_TEST
766 depends on OF_GPIO
767 select GPIOLIB_IRQCHIP
768 select GPIO_GENERIC
769 select IRQ_DOMAIN_HIERARCHY
770 help
771 Say yes here to support GPIO on Tohisba Visconti.
772
773config GPIO_WCD934X
774 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 GPIO controller driver"
775 depends on MFD_WCD934X && OF_GPIO
776 help
777 This driver is to support GPIO block found on the Qualcomm Technologies
778 Inc WCD9340/WCD9341 Audio Codec.
779
780config GPIO_XGENE
781 bool "APM X-Gene GPIO controller support"
782 depends on ARM64 && OF_GPIO
783 help
784 This driver is to support the GPIO block within the APM X-Gene SoC
785 platform's generic flash controller. The GPIO pins are muxed with
786 the generic flash controller's address and data pins. Say yes
787 here to enable the GFC GPIO functionality.
788
789config GPIO_XGENE_SB
790 tristate "APM X-Gene GPIO standby controller support"
791 depends on (ARCH_XGENE || COMPILE_TEST)
792 select GPIO_GENERIC
793 select GPIOLIB_IRQCHIP
794 select IRQ_DOMAIN_HIERARCHY
795 help
796 This driver supports the GPIO block within the APM X-Gene
797 Standby Domain. Say yes here to enable the GPIO functionality.
798
799config GPIO_XILINX
800 tristate "Xilinx GPIO support"
801 select GPIOLIB_IRQCHIP
802 help
803 Say yes here to support the Xilinx FPGA GPIO device.
804
805config GPIO_XLP
806 tristate "Cavium ThunderX2 GPIO support"
807 depends on ARCH_THUNDER2 || COMPILE_TEST
808 select GPIOLIB_IRQCHIP
809 help
810 This driver provides support for GPIO interface on Cavium's ThunderX2
811 CN99XX SoCs (Originally from Netlogic XLP).
812
813 If unsure, say N.
814
815config GPIO_XTENSA
816 bool "Xtensa GPIO32 support"
817 depends on XTENSA
818 depends on HAVE_XTENSA_GPIO32
819 depends on !SMP
820 help
821 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
822 and EXPSTATE (output) ports.
823
824config GPIO_ZEVIO
825 bool "LSI ZEVIO SoC memory mapped GPIOs"
826 depends on ARM
827 help
828 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
829
830config GPIO_ZYNQ
831 tristate "Xilinx Zynq GPIO support"
832 depends on ARCH_ZYNQ || ARCH_ZYNQMP
833 select GPIOLIB_IRQCHIP
834 help
835 Say yes here to support Xilinx Zynq GPIO controller.
836
837config GPIO_ZYNQMP_MODEPIN
838 tristate "ZynqMP ps-mode pin GPIO configuration driver"
839 depends on ZYNQMP_FIRMWARE
840 default ZYNQMP_FIRMWARE
841 help
842 Say yes here to support the ZynqMP ps-mode pin GPIO configuration
843 driver.
844
845 This ps-mode pin GPIO driver is based on GPIO framework. PS_MODE
846 is 4-bits boot mode pins. It sets and gets the status of
847 the ps-mode pin. Every pin can be configured as input/output.
848
849config GPIO_LOONGSON1
850 tristate "Loongson1 GPIO support"
851 depends on MACH_LOONGSON32
852 select GPIO_GENERIC
853 help
854 Say Y or M here to support GPIO on Loongson1 SoCs.
855
856config GPIO_AMD_FCH
857 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
858 help
859 This option enables driver for GPIO on AMD's Fusion Controller Hub,
860 as found on G-series SOCs (e.g. GX-412TC).
861
862 Note: This driver doesn't register itself automatically, as it
863 needs to be provided with platform-specific configuration.
864 (See e.g. CONFIG_PCENGINES_APU2.)
865
866config GPIO_MSC313
867 bool "MStar MSC313 GPIO support"
868 depends on ARCH_MSTARV7
869 default ARCH_MSTARV7
870 select GPIOLIB_IRQCHIP
871 select IRQ_DOMAIN_HIERARCHY
872 help
873 Say Y here to support the main GPIO block on MStar/SigmaStar
874 ARMv7-based SoCs.
875
876config GPIO_IDT3243X
877 tristate "IDT 79RC3243X GPIO support"
878 depends on MIKROTIK_RB532 || COMPILE_TEST
879 select GPIO_GENERIC
880 select GPIOLIB_IRQCHIP
881 help
882 Select this option to enable GPIO driver for
883 IDT 79RC3243X-based devices like Mikrotik RB532.
884
885 To compile this driver as a module, choose M here: the module will
886 be called gpio-idt3243x.
887
888endmenu
889
890menu "Port-mapped I/O GPIO drivers"
891 depends on X86 && HAS_IOPORT # I/O space access
892
893config GPIO_VX855
894 tristate "VIA VX855/VX875 GPIO"
895 depends on PCI
896 select MFD_CORE
897 select MFD_VX855
898 help
899 Support access to the VX855/VX875 GPIO lines through the GPIO library.
900
901 This driver provides common support for accessing the device.
902 Additional drivers must be enabled in order to use the
903 functionality of the device.
904
905config GPIO_I8255
906 tristate
907 select GPIO_REGMAP
908 help
909 Enables support for the i8255 interface library functions. The i8255
910 interface library provides functions to facilitate communication with
911 interfaces compatible with the venerable Intel 8255 Programmable
912 Peripheral Interface (PPI). The Intel 8255 PPI chip was first released
913 in the early 1970s but compatible interfaces are nowadays typically
914 found embedded in larger VLSI processing chips and FPGA components.
915
916 If built as a module its name will be gpio-i8255.
917
918config GPIO_104_DIO_48E
919 tristate "ACCES 104-DIO-48E GPIO support"
920 depends on PC104
921 select ISA_BUS_API
922 select REGMAP_MMIO
923 select REGMAP_IRQ
924 select GPIOLIB_IRQCHIP
925 select GPIO_I8255
926 select I8254
927 help
928 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
929 104-DIO-24E). The base port addresses for the devices may be
930 configured via the base module parameter. The interrupt line numbers
931 for the devices may be configured via the irq module parameter.
932
933config GPIO_104_IDIO_16
934 tristate "ACCES 104-IDIO-16 GPIO support"
935 depends on PC104
936 select ISA_BUS_API
937 select REGMAP_MMIO
938 select GPIO_IDIO_16
939 help
940 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
941 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
942 base port addresses for the devices may be configured via the base
943 module parameter. The interrupt line numbers for the devices may be
944 configured via the irq module parameter.
945
946config GPIO_104_IDI_48
947 tristate "ACCES 104-IDI-48 GPIO support"
948 depends on PC104
949 select ISA_BUS_API
950 select REGMAP_MMIO
951 select REGMAP_IRQ
952 select GPIOLIB_IRQCHIP
953 select GPIO_REGMAP
954 help
955 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
956 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
957 the devices may be configured via the base module parameter. The
958 interrupt line numbers for the devices may be configured via the irq
959 module parameter.
960
961config GPIO_F7188X
962 tristate "Fintek and Nuvoton Super-I/O GPIO support"
963 help
964 This option enables support for GPIOs found on Fintek Super-I/O
965 chips F71869, F71869A, F71882FG, F71889F and F81866.
966 As well as Nuvoton Super-I/O chip NCT6126D.
967
968 To compile this driver as a module, choose M here: the module will
969 be called f7188x-gpio.
970
971config GPIO_GPIO_MM
972 tristate "Diamond Systems GPIO-MM GPIO support"
973 depends on PC104
974 select ISA_BUS_API
975 select REGMAP_MMIO
976 select GPIO_I8255
977 help
978 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
979
980 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
981 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
982 support for these 48 channels of digital I/O.
983
984 The base port addresses for the devices may be configured via the base
985 array module parameter.
986
987config GPIO_IT87
988 tristate "IT87xx GPIO support"
989 help
990 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
991
992 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
993 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
994 well.
995
996 To compile this driver as a module, choose M here: the module will
997 be called gpio_it87.
998
999config GPIO_SCH
1000 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
1001 depends on (X86 || COMPILE_TEST) && ACPI
1002 depends on LPC_SCH
1003 select GPIOLIB_IRQCHIP
1004 help
1005 Say yes here to support GPIO interface on Intel Poulsbo SCH,
1006 Intel Tunnel Creek processor, Intel Centerton processor or
1007 Intel Quark X1000 SoC.
1008
1009 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
1010 powered by the core power rail and are turned off during sleep
1011 modes (S3 and higher). The remaining four GPIOs are powered by
1012 the Intel SCH suspend power supply. These GPIOs remain
1013 active during S3. The suspend-powered GPIOs can be used to wake the
1014 system from the Suspend-to-RAM state.
1015
1016 The Intel Tunnel Creek processor has 5 GPIOs powered by the
1017 core power rail and 9 from suspend power supply.
1018
1019 The Intel Centerton processor has a total of 30 GPIO pins.
1020 Twenty-one are powered by the core power rail and 9 from the
1021 suspend power supply.
1022
1023 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
1024 power well and 6 from the suspend power well.
1025
1026config GPIO_SCH311X
1027 tristate "SMSC SCH311x SuperI/O GPIO"
1028 help
1029 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
1030 SCH3116 "Super I/O" chipsets.
1031
1032 To compile this driver as a module, choose M here: the module will
1033 be called gpio-sch311x.
1034
1035config GPIO_TS5500
1036 tristate "TS-5500 DIO blocks and compatibles"
1037 depends on TS5500 || COMPILE_TEST
1038 help
1039 This driver supports Digital I/O exposed by pin blocks found on some
1040 Technologic Systems platforms. It includes, but is not limited to, 3
1041 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
1042 LCD port.
1043
1044config GPIO_WINBOND
1045 tristate "Winbond Super I/O GPIO support"
1046 select ISA_BUS_API
1047 help
1048 This option enables support for GPIOs found on Winbond Super I/O
1049 chips.
1050 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
1051 supported.
1052
1053 You will need to provide a module parameter "gpios", or a
1054 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
1055 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
1056
1057 To compile this driver as a module, choose M here: the module will
1058 be called gpio-winbond.
1059
1060config GPIO_WS16C48
1061 tristate "WinSystems WS16C48 GPIO support"
1062 select ISA_BUS_API
1063 select REGMAP_IRQ
1064 select REGMAP_MMIO
1065 select GPIOLIB_IRQCHIP
1066 select GPIO_REGMAP
1067 help
1068 Enables GPIO support for the WinSystems WS16C48. The base port
1069 addresses for the devices may be configured via the base module
1070 parameter. The interrupt line numbers for the devices may be
1071 configured via the irq module parameter.
1072
1073endmenu
1074
1075menu "I2C GPIO expanders"
1076 depends on I2C
1077
1078config GPIO_ADNP
1079 tristate "Avionic Design N-bit GPIO expander"
1080 depends on OF_GPIO
1081 select GPIOLIB_IRQCHIP
1082 help
1083 This option enables support for N GPIOs found on Avionic Design
1084 I2C GPIO expanders. The register space will be extended by powers
1085 of two, so the controller will need to accommodate for that. For
1086 example: if a controller provides 48 pins, 6 registers will be
1087 enough to represent all pins, but the driver will assume a
1088 register layout for 64 pins (8 registers).
1089
1090config GPIO_FXL6408
1091 tristate "FXL6408 I2C GPIO expander"
1092 select GPIO_REGMAP
1093 select REGMAP_I2C
1094 help
1095 GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
1096
1097 To compile this driver as a module, choose M here: the module will
1098 be called gpio-fxl6408.
1099
1100config GPIO_DS4520
1101 tristate "DS4520 I2C GPIO expander"
1102 select REGMAP_I2C
1103 select GPIO_REGMAP
1104 help
1105 GPIO driver for ADI DS4520 I2C-based GPIO expander.
1106 Say yes here to enable the GPIO driver for the ADI DS4520 chip.
1107
1108 To compile this driver as a module, choose M here: the module will
1109 be called gpio-ds4520.
1110
1111config GPIO_GW_PLD
1112 tristate "Gateworks PLD GPIO Expander"
1113 depends on OF_GPIO
1114 help
1115 Say yes here to provide access to the Gateworks I2C PLD GPIO
1116 Expander. This is used at least on the Cambria GW2358-4.
1117
1118config GPIO_MAX7300
1119 tristate "Maxim MAX7300 GPIO expander"
1120 select GPIO_MAX730X
1121 help
1122 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1123
1124config GPIO_MAX732X
1125 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1126 help
1127 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1128 Port Expanders. Each IO port on these chips has a fixed role of
1129 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1130 Input and Output (designed by 'P'). The combinations are listed
1131 below:
1132
1133 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1134 max7322 (4I4O), max7323 (4P4O)
1135
1136 16 bits: max7324 (8I8O), max7325 (8P8O),
1137 max7326 (4I12O), max7327 (4P12O)
1138
1139 Board setup code must specify the model to use, and the start
1140 number for these GPIOs.
1141
1142config GPIO_MAX732X_IRQ
1143 bool "Interrupt controller support for MAX732x"
1144 depends on GPIO_MAX732X=y
1145 select GPIOLIB_IRQCHIP
1146 help
1147 Say yes here to enable the max732x to be used as an interrupt
1148 controller. It requires the driver to be built in the kernel.
1149
1150config GPIO_PCA953X
1151 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1152 select REGMAP_I2C
1153 help
1154 Say yes here to provide access to several register-oriented
1155 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1156 models include:
1157
1158 4 bits: pca9536, pca9537
1159
1160 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1161 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1162
1163 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1164 tca6416
1165
1166 24 bits: tca6424
1167
1168 40 bits: pca9505, pca9698
1169
1170config GPIO_PCA953X_IRQ
1171 bool "Interrupt controller support for PCA953x"
1172 depends on GPIO_PCA953X
1173 select GPIOLIB_IRQCHIP
1174 help
1175 Say yes here to enable the pca953x to be used as an interrupt
1176 controller.
1177
1178config GPIO_PCA9570
1179 tristate "PCA9570 4-Bit I2C GPO expander"
1180 help
1181 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1182
1183 To compile this driver as a module, choose M here: the module will
1184 be called gpio-pca9570.
1185
1186config GPIO_PCF857X
1187 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1188 select GPIOLIB_IRQCHIP
1189 select IRQ_DOMAIN
1190 help
1191 Say yes here to provide access to most "quasi-bidirectional" I2C
1192 GPIO expanders used for additional digital outputs or inputs.
1193 Most of these parts are from NXP, though TI is a second source for
1194 some of them. Compatible models include:
1195
1196 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1197 pca9670, pca9672, pca9674, pca9674a,
1198 max7328, max7329
1199
1200 16 bits: pcf8575, pcf8575c, pca8575,
1201 pca9671, pca9673, pca9675
1202
1203 Your board setup code will need to declare the expanders in
1204 use, and assign numbers to the GPIOs they expose. Those GPIOs
1205 can then be used from drivers and other kernel code, just like
1206 other GPIOs, but only accessible from task contexts.
1207
1208 This driver provides an in-kernel interface to those GPIOs using
1209 platform-neutral GPIO calls.
1210
1211config GPIO_TPIC2810
1212 tristate "TPIC2810 8-Bit I2C GPO expander"
1213 help
1214 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1215
1216 To compile this driver as a module, choose M here: the module will
1217 be called gpio-tpic2810.
1218
1219config GPIO_TS4900
1220 tristate "Technologic Systems FPGA I2C GPIO"
1221 depends on SOC_IMX6 || COMPILE_TEST
1222 select REGMAP_I2C
1223 help
1224 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1225 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1226
1227endmenu
1228
1229menu "MFD GPIO expanders"
1230
1231config GPIO_ADP5520
1232 tristate "GPIO Support for ADP5520 PMIC"
1233 depends on PMIC_ADP5520
1234 help
1235 This option enables support for on-chip GPIO found
1236 on Analog Devices ADP5520 PMICs.
1237
1238config GPIO_ADP5585
1239 tristate "GPIO Support for ADP5585"
1240 depends on MFD_ADP5585
1241 help
1242 This option enables support for the GPIO function found in the Analog
1243 Devices ADP5585.
1244
1245config GPIO_ALTERA_A10SR
1246 tristate "Altera Arria10 System Resource GPIO"
1247 depends on MFD_ALTERA_A10SR
1248 help
1249 Driver for Arria10 Development Kit GPIO expansion which
1250 includes reads of pushbuttons and DIP switches as well
1251 as writes to LEDs.
1252
1253config GPIO_ARIZONA
1254 tristate "Wolfson Microelectronics Arizona class devices"
1255 depends on MFD_ARIZONA
1256 help
1257 Support for GPIOs on Wolfson Arizona class devices.
1258
1259config GPIO_BD71815
1260 tristate "ROHM BD71815 PMIC GPIO support"
1261 depends on MFD_ROHM_BD71828
1262 help
1263 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1264 available on the ROHM PMIC.
1265
1266 This driver can also be built as a module. If so, the module
1267 will be called gpio-bd71815.
1268
1269config GPIO_BD71828
1270 tristate "ROHM BD71828 GPIO support"
1271 depends on MFD_ROHM_BD71828
1272 help
1273 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1274 available on the ROHM PMIC in total. The GPIOs are limited to
1275 outputs only and pins must be configured to GPIO outputs by
1276 OTP. Enable this only if you want to use these pins as outputs.
1277
1278 This driver can also be built as a module. If so, the module
1279 will be called gpio-bd71828.
1280
1281config GPIO_BD9571MWV
1282 tristate "ROHM BD9571 GPIO support"
1283 depends on MFD_BD9571MWV
1284 help
1285 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1286 available on the ROHM PMIC in total, both of which can also
1287 generate interrupts.
1288
1289 This driver can also be built as a module. If so, the module
1290 will be called gpio-bd9571mwv.
1291
1292config GPIO_CGBC
1293 tristate "Congatec Board Controller GPIO support"
1294 depends on MFD_CGBC
1295 help
1296 Select this option to enable GPIO support for the Congatec Board
1297 Controller.
1298
1299 This driver can also be built as a module. If so, the module will be
1300 called gpio-cgbc.
1301
1302config GPIO_CROS_EC
1303 tristate "ChromeOS EC GPIO support"
1304 depends on CROS_EC
1305 help
1306 GPIO driver for the ChromeOS Embedded Controller (EC). GPIOs
1307 cannot be set unless the system is unlocked.
1308
1309 This driver can also be built as a module. If so, the module
1310 will be called gpio-cros-ec.
1311
1312config GPIO_CRYSTAL_COVE
1313 tristate "GPIO support for Crystal Cove PMIC"
1314 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1315 select GPIOLIB_IRQCHIP
1316 help
1317 Support for GPIO pins on Crystal Cove PMIC.
1318
1319 Say Yes if you have a Intel SoC-based tablet with Crystal Cove PMIC
1320 inside.
1321
1322 This driver can also be built as a module. If so, the module will be
1323 called gpio-crystalcove.
1324
1325config GPIO_CS5535
1326 tristate "AMD CS5535/CS5536 GPIO support"
1327 depends on X86 || MIPS || COMPILE_TEST
1328 depends on MFD_CS5535
1329 help
1330 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1331 can be used for quite a number of things. The CS5535/6 is found on
1332 AMD Geode and Lemote Yeeloong devices.
1333
1334 If unsure, say N.
1335
1336config GPIO_DA9052
1337 tristate "Dialog DA9052 GPIO"
1338 depends on PMIC_DA9052
1339 help
1340 Say yes here to enable the GPIO driver for the DA9052 chip.
1341
1342config GPIO_DA9055
1343 tristate "Dialog Semiconductor DA9055 GPIO"
1344 depends on MFD_DA9055
1345 help
1346 Say yes here to enable the GPIO driver for the DA9055 chip.
1347
1348 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1349 be controlled by this driver.
1350
1351 If driver is built as a module it will be called gpio-da9055.
1352
1353config GPIO_DLN2
1354 tristate "Diolan DLN2 GPIO support"
1355 depends on MFD_DLN2
1356 select GPIOLIB_IRQCHIP
1357
1358 help
1359 Select this option to enable GPIO driver for the Diolan DLN2
1360 board.
1361
1362 This driver can also be built as a module. If so, the module
1363 will be called gpio-dln2.
1364
1365config HTC_EGPIO
1366 bool "HTC EGPIO support"
1367 depends on ARM
1368 help
1369 This driver supports the CPLD egpio chip present on
1370 several HTC phones. It provides basic support for input
1371 pins, output pins, and IRQs.
1372
1373config GPIO_ELKHARTLAKE
1374 tristate "Intel Elkhart Lake PSE GPIO support"
1375 depends on X86 || COMPILE_TEST
1376 select GPIO_TANGIER
1377 help
1378 Select this option to enable GPIO support for Intel Elkhart Lake
1379 PSE GPIO IP.
1380
1381 To compile this driver as a module, choose M here: the module will
1382 be called gpio-elkhartlake.
1383
1384config GPIO_JANZ_TTL
1385 tristate "Janz VMOD-TTL Digital IO Module"
1386 depends on MFD_JANZ_CMODIO
1387 help
1388 This enables support for the Janz VMOD-TTL Digital IO module.
1389 This driver provides support for driving the pins in output
1390 mode only. Input mode is not supported.
1391
1392config GPIO_KEMPLD
1393 tristate "Kontron ETX / COMexpress GPIO"
1394 depends on MFD_KEMPLD
1395 help
1396 This enables support for the PLD GPIO interface on some Kontron ETX
1397 and COMexpress (ETXexpress) modules.
1398
1399 This driver can also be built as a module. If so, the module will be
1400 called gpio-kempld.
1401
1402config GPIO_LJCA
1403 tristate "INTEL La Jolla Cove Adapter GPIO support"
1404 depends on USB_LJCA
1405 select GPIOLIB_IRQCHIP
1406 default USB_LJCA
1407 help
1408 Select this option to enable GPIO driver for the INTEL
1409 La Jolla Cove Adapter (LJCA) board.
1410
1411 This driver can also be built as a module. If so, the module
1412 will be called gpio-ljca.
1413
1414config GPIO_LP3943
1415 tristate "TI/National Semiconductor LP3943 GPIO expander"
1416 depends on MFD_LP3943
1417 help
1418 GPIO driver for LP3943 MFD.
1419 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1420 Open drain outputs are required for this usage.
1421
1422config GPIO_LP873X
1423 tristate "TI LP873X GPO"
1424 depends on MFD_TI_LP873X
1425 help
1426 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1427 on LP873X PMICs.
1428
1429 This driver can also be built as a module. If so, the module will be
1430 called gpio-lp873x.
1431
1432config GPIO_LP87565
1433 tristate "TI LP87565 GPIO"
1434 depends on MFD_TI_LP87565
1435 help
1436 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1437 on LP87565 PMICs.
1438
1439 This driver can also be built as a module. If so, the module will be
1440 called gpio-lp87565.
1441
1442config GPIO_MADERA
1443 tristate "Cirrus Logic Madera class codecs"
1444 depends on PINCTRL_MADERA
1445 help
1446 Support for GPIOs on Cirrus Logic Madera class codecs.
1447
1448config GPIO_MAX77620
1449 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1450 depends on MFD_MAX77620
1451 select GPIOLIB_IRQCHIP
1452 help
1453 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1454 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1455 driver also provides interrupt support for each of the GPIOs.
1456 Say yes here to enable the max77620 to be used as GPIO controller.
1457
1458config GPIO_MAX77650
1459 tristate "Maxim MAX77650/77651 GPIO support"
1460 depends on MFD_MAX77650
1461 help
1462 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1463 These chips have a single pin that can be configured as GPIO.
1464
1465config GPIO_PALMAS
1466 bool "TI PALMAS series PMICs GPIO"
1467 depends on MFD_PALMAS
1468 help
1469 Select this option to enable GPIO driver for the TI PALMAS
1470 series chip family.
1471
1472config GPIO_PMIC_EIC_SPRD
1473 tristate "Spreadtrum PMIC EIC support"
1474 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1475 depends on OF_GPIO
1476 select GPIOLIB_IRQCHIP
1477 help
1478 Say yes here to support Spreadtrum PMIC EIC device.
1479
1480config GPIO_RC5T583
1481 bool "RICOH RC5T583 GPIO"
1482 depends on MFD_RC5T583
1483 help
1484 Select this option to enable GPIO driver for the Ricoh RC5T583
1485 chip family.
1486 This driver provides the support for driving/reading the GPIO pins
1487 of RC5T583 device through standard GPIO library.
1488
1489config GPIO_SL28CPLD
1490 tristate "Kontron sl28cpld GPIO support"
1491 depends on MFD_SL28CPLD || COMPILE_TEST
1492 select GPIO_REGMAP
1493 select GPIOLIB_IRQCHIP
1494 select REGMAP_IRQ
1495 help
1496 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1497
1498 This driver can also be built as a module. If so, the module will be
1499 called gpio-sl28cpld.
1500
1501config GPIO_STMPE
1502 bool "STMPE GPIOs"
1503 depends on MFD_STMPE
1504 depends on OF_GPIO
1505 select GPIOLIB_IRQCHIP
1506 help
1507 This enables support for the GPIOs found on the STMPE I/O
1508 Expanders.
1509
1510config GPIO_TC3589X
1511 bool "TC3589X GPIOs"
1512 depends on MFD_TC3589X
1513 depends on OF_GPIO
1514 select GPIOLIB_IRQCHIP
1515 help
1516 This enables support for the GPIOs found on the TC3589X
1517 I/O Expander.
1518
1519config GPIO_TIMBERDALE
1520 bool "Support for timberdale GPIO IP"
1521 depends on MFD_TIMBERDALE
1522 help
1523 Add support for the GPIO IP in the timberdale FPGA.
1524
1525config GPIO_TN48M_CPLD
1526 tristate "Delta Networks TN48M switch CPLD GPIO driver"
1527 depends on MFD_TN48M_CPLD
1528 select GPIO_REGMAP
1529 help
1530 This enables support for the GPIOs found on the Delta
1531 Networks TN48M switch Lattice CPLD. It provides 12 pins in total,
1532 they are input-only or output-only type.
1533
1534 This driver can also be built as a module. If so, the
1535 module will be called gpio-tn48m.
1536
1537config GPIO_TPS65086
1538 tristate "TI TPS65086 GPO"
1539 depends on MFD_TPS65086
1540 help
1541 This driver supports the GPO on TI TPS65086x PMICs.
1542
1543config GPIO_TPS65218
1544 tristate "TPS65218 GPIO"
1545 depends on MFD_TPS65218
1546 help
1547 Select this option to enable GPIO driver for the TPS65218
1548 chip family.
1549
1550config GPIO_TPS65219
1551 tristate "TPS65219 GPIO"
1552 depends on MFD_TPS65219
1553 default MFD_TPS65219
1554 help
1555 Select this option to enable GPIO driver for the TPS65219 chip
1556 family.
1557 GPIO0 is statically configured as either input or output prior to
1558 Linux boot. It is used for MULTI_DEVICE_ENABLE function. This setting
1559 is statically configured by NVM. GPIO0 can't be used as a generic
1560 GPIO. It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when
1561 MULTI_DEVICE_EN=1.
1562
1563 This driver can also be built as a module. If so, the module will be
1564 called gpio_tps65219.
1565
1566config GPIO_TPS6586X
1567 bool "TPS6586X GPIO"
1568 depends on MFD_TPS6586X
1569 help
1570 Select this option to enable GPIO driver for the TPS6586X
1571 chip family.
1572
1573config GPIO_TPS65910
1574 bool "TPS65910 GPIO"
1575 depends on MFD_TPS65910
1576 help
1577 Select this option to enable GPIO driver for the TPS65910
1578 chip family.
1579
1580config GPIO_TPS65912
1581 tristate "TI TPS65912 GPIO"
1582 depends on MFD_TPS65912
1583 help
1584 This driver supports TPS65912 GPIO chip.
1585
1586config GPIO_TPS68470
1587 tristate "TPS68470 GPIO"
1588 depends on INTEL_SKL_INT3472
1589 help
1590 Select this option to enable GPIO driver for the TPS68470
1591 chip family.
1592 There are 7 GPIOs and few sensor-related GPIOs supported
1593 by the TPS68470. While the 7 GPIOs can be configured as
1594 input or output as appropriate, the sensor related GPIOs
1595 are "output only" GPIOs.
1596
1597config GPIO_TQMX86
1598 tristate "TQ-Systems TQMx86 GPIO"
1599 depends on MFD_TQMX86 || COMPILE_TEST
1600 depends on HAS_IOPORT_MAP
1601 select GPIOLIB_IRQCHIP
1602 help
1603 This driver supports GPIO on the TQMX86 IO controller.
1604
1605config GPIO_TWL4030
1606 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1607 depends on TWL4030_CORE
1608 help
1609 Say yes here to access the GPIO signals of various multi-function
1610 power management chips from Texas Instruments.
1611
1612config GPIO_TWL6040
1613 tristate "TWL6040 GPO"
1614 depends on TWL6040_CORE
1615 help
1616 Say yes here to access the GPO signals of twl6040
1617 audio chip from Texas Instruments.
1618
1619config GPIO_WHISKEY_COVE
1620 tristate "GPIO support for Whiskey Cove PMIC"
1621 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1622 select GPIOLIB_IRQCHIP
1623 help
1624 Support for GPIO pins on Whiskey Cove PMIC.
1625
1626 Say Yes if you have an Intel SoC-based tablet with Whiskey Cove PMIC
1627 inside.
1628
1629 This driver can also be built as a module. If so, the module will be
1630 called gpio-wcove.
1631
1632config GPIO_WM831X
1633 tristate "WM831x GPIOs"
1634 depends on MFD_WM831X
1635 help
1636 Say yes here to access the GPIO signals of WM831x power management
1637 chips from Wolfson Microelectronics.
1638
1639config GPIO_WM8350
1640 tristate "WM8350 GPIOs"
1641 depends on MFD_WM8350
1642 help
1643 Say yes here to access the GPIO signals of WM8350 power management
1644 chips from Wolfson Microelectronics.
1645
1646config GPIO_WM8994
1647 tristate "WM8994 GPIOs"
1648 depends on MFD_WM8994
1649 help
1650 Say yes here to access the GPIO signals of WM8994 audio hub
1651 CODECs from Wolfson Microelectronics.
1652
1653endmenu
1654
1655menu "PCI GPIO expanders"
1656 depends on PCI
1657
1658config GPIO_AMD8111
1659 tristate "AMD 8111 GPIO driver"
1660 depends on X86 || COMPILE_TEST
1661 depends on HAS_IOPORT_MAP
1662 help
1663 The AMD 8111 southbridge contains 32 GPIO pins which can be used.
1664
1665 Note that usually system firmware/ACPI handles GPIO pins on their
1666 own and users might easily break their systems with uncareful usage
1667 of this driver!
1668
1669 If unsure, say N
1670
1671config GPIO_BT8XX
1672 tristate "BT8XX GPIO abuser"
1673 depends on VIDEO_BT848=n
1674 help
1675 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1676 as a cheap PCI GPIO card.
1677
1678 This chip can be found on Miro, Hauppauge and STB TV-cards.
1679
1680 The card needs to be physically altered for using it as a
1681 GPIO card. For more information on how to build a GPIO card
1682 from a BT8xx TV card, see the documentation file at
1683 Documentation/driver-api/gpio/bt8xxgpio.rst
1684
1685 If unsure, say N.
1686
1687config GPIO_MERRIFIELD
1688 tristate "Intel Merrifield GPIO support"
1689 depends on X86_INTEL_MID
1690 select GPIO_TANGIER
1691 help
1692 Say Y here to support Intel Merrifield GPIO.
1693
1694config GPIO_MLXBF
1695 tristate "Mellanox BlueField SoC GPIO"
1696 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1697 select GPIO_GENERIC
1698 help
1699 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1700
1701config GPIO_MLXBF2
1702 tristate "Mellanox BlueField 2 SoC GPIO"
1703 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1704 select GPIO_GENERIC
1705 select GPIOLIB_IRQCHIP
1706 help
1707 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1708
1709config GPIO_MLXBF3
1710 tristate "Mellanox BlueField 3 SoC GPIO"
1711 depends on (MELLANOX_PLATFORM && ARM64) || COMPILE_TEST
1712 select GPIO_GENERIC
1713 select GPIOLIB_IRQCHIP
1714 help
1715 Say Y if you want GPIO support on Mellanox BlueField 3 SoC.
1716 This GPIO controller supports interrupt handling and enables the
1717 manipulation of certain GPIO pins.
1718 This controller should be used in parallel with pinctrl-mlxbf3 to
1719 control the desired GPIOs.
1720 This driver can also be built as a module called mlxbf3-gpio.
1721
1722config GPIO_ML_IOH
1723 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1724 depends on X86 || COMPILE_TEST
1725 select GENERIC_IRQ_CHIP
1726 help
1727 ML7213 is companion chip for Intel Atom E6xx series.
1728 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH (Input/Output
1729 Hub) which is for IVI (In-Vehicle Infotainment) use.
1730 This driver can access the IOH's GPIO device.
1731
1732config GPIO_PCH
1733 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH (ML7223/ML7831) GPIO"
1734 depends on X86_32 || MIPS || COMPILE_TEST
1735 select GENERIC_IRQ_CHIP
1736 help
1737 This driver is for PCH (Platform Controller Hub) GPIO of Intel Topcliff,
1738 which is an IOH (Input/Output Hub) for x86 embedded processor.
1739 This driver can access PCH GPIO device.
1740
1741 This driver also can be used for LAPIS Semiconductor IOH (Input/
1742 Output Hub), ML7223 and ML7831.
1743 ML7223 IOH is for MP (Media Phone) use.
1744 ML7831 IOH is for general purpose use.
1745 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1746 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1747
1748config GPIO_PCI_IDIO_16
1749 tristate "ACCES PCI-IDIO-16 GPIO support"
1750 select REGMAP_MMIO
1751 select GPIO_IDIO_16
1752 help
1753 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1754 generated when any of the inputs change state (low to high or high to
1755 low). Input filter control is not supported by this driver, and the
1756 input filters are deactivated by this driver.
1757
1758config GPIO_PCIE_IDIO_24
1759 tristate "ACCES PCIe-IDIO-24 GPIO support"
1760 select REGMAP_IRQ
1761 select REGMAP_MMIO
1762 select GPIOLIB_IRQCHIP
1763 select GPIO_REGMAP
1764 help
1765 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1766 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1767 when any of the inputs change state (low to high or high to low).
1768 Input filter control is not supported by this driver, and the input
1769 filters are deactivated by this driver.
1770
1771config GPIO_RDC321X
1772 tristate "RDC R-321x GPIO support"
1773 select MFD_CORE
1774 select MFD_RDC321X
1775 help
1776 Support for the RDC R321x SoC GPIOs over southbridge
1777 PCI configuration space.
1778
1779config GPIO_SODAVILLE
1780 bool "Intel Sodaville GPIO support"
1781 depends on X86 && OF
1782 select GPIO_GENERIC
1783 select GENERIC_IRQ_CHIP
1784 help
1785 Say Y here to support Intel Sodaville GPIO.
1786
1787endmenu
1788
1789menu "SPI GPIO expanders"
1790 depends on SPI_MASTER
1791
1792config GPIO_74X164
1793 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1794 depends on OF_GPIO
1795 help
1796 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1797 shift registers. This driver can be used to provide access
1798 to more GPIO outputs.
1799
1800config GPIO_MAX3191X
1801 tristate "Maxim MAX3191x industrial serializer"
1802 select CRC8
1803 help
1804 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1805 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1806 chip to make 8 digital 24V inputs available via SPI. Supports
1807 CRC checksums to guard against electromagnetic interference,
1808 as well as undervoltage and overtemperature detection.
1809
1810config GPIO_MAX7301
1811 tristate "Maxim MAX7301 GPIO expander"
1812 select GPIO_MAX730X
1813 help
1814 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1815
1816config GPIO_MC33880
1817 tristate "Freescale MC33880 high-side/low-side switch"
1818 help
1819 SPI driver for Freescale MC33880 high-side/low-side switch.
1820 This provides GPIO interface supporting inputs and outputs.
1821
1822config GPIO_PISOSR
1823 tristate "Generic parallel-in/serial-out shift register"
1824 help
1825 GPIO driver for SPI compatible parallel-in/serial-out shift
1826 registers. These are input only devices.
1827
1828config GPIO_XRA1403
1829 tristate "EXAR XRA1403 16-bit GPIO expander"
1830 select REGMAP_SPI
1831 help
1832 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1833
1834config GPIO_MOXTET
1835 tristate "Turris Mox Moxtet bus GPIO expander"
1836 depends on MOXTET
1837 help
1838 Say yes here if you are building for the Turris Mox router.
1839 This is the driver needed for configuring the GPIOs via the Moxtet
1840 bus. For example the Mox module with SFP cage needs this driver
1841 so that phylink can use corresponding GPIOs.
1842
1843endmenu
1844
1845menu "USB GPIO expanders"
1846 depends on USB
1847
1848config GPIO_VIPERBOARD
1849 tristate "Viperboard GPIO a & b support"
1850 depends on MFD_VIPERBOARD
1851 help
1852 Say yes here to access the GPIO signals of Nano River
1853 Technologies Viperboard. There are two GPIO chips on the
1854 board: gpioa and gpiob.
1855 See viperboard API specification and Nano
1856 River Tech's viperboard.h for detailed meaning
1857 of the module parameters.
1858
1859config GPIO_MPSSE
1860 tristate "FTDI MPSSE GPIO support"
1861 select GPIOLIB_IRQCHIP
1862 help
1863 GPIO driver for FTDI's MPSSE interface. These can do input and
1864 output. Each MPSSE provides 16 IO pins.
1865
1866endmenu
1867
1868menu "Virtual GPIO drivers"
1869
1870config GPIO_AGGREGATOR
1871 tristate "GPIO Aggregator"
1872 help
1873 Say yes here to enable the GPIO Aggregator, which provides a way to
1874 aggregate existing GPIO lines into a new virtual GPIO chip.
1875 This can serve the following purposes:
1876 - Assign permissions for a collection of GPIO lines to a user,
1877 - Export a collection of GPIO lines to a virtual machine,
1878 - Provide a generic driver for a GPIO-operated device in an
1879 industrial control context, to be operated from userspace using
1880 the GPIO chardev interface.
1881
1882config GPIO_LATCH
1883 tristate "GPIO latch driver"
1884 help
1885 Say yes here to enable a driver for GPIO multiplexers based on latches
1886 connected to other GPIOs.
1887
1888config GPIO_MOCKUP
1889 tristate "GPIO Testing Driver (DEPRECATED)"
1890 select IRQ_SIM
1891 help
1892 This module is DEPRECATED. Please consider using gpio-sim instead.
1893
1894 This enables GPIO Testing driver, which provides a way to test GPIO
1895 subsystem through sysfs (or char device) and debugfs.
1896 User could use it through the script in
1897 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1898 it.
1899
1900config GPIO_VIRTIO
1901 tristate "VirtIO GPIO support"
1902 depends on VIRTIO
1903 select GPIOLIB_IRQCHIP
1904 help
1905 Say Y here to enable guest support for virtio-based GPIO controllers.
1906
1907 These virtual GPIOs can be routed to real GPIOs or attached to
1908 simulators on the host (like QEMU).
1909
1910config GPIO_SIM
1911 tristate "GPIO Simulator Module"
1912 select IRQ_SIM
1913 select CONFIGFS_FS
1914 help
1915 This enables the GPIO simulator - a configfs-based GPIO testing
1916 driver.
1917
1918endmenu
1919
1920menu "GPIO Debugging utilities"
1921
1922config GPIO_SLOPPY_LOGIC_ANALYZER
1923 tristate "Sloppy GPIO logic analyzer"
1924 depends on (GPIOLIB || COMPILE_TEST) && CPUSETS && DEBUG_FS && EXPERT
1925 help
1926 This option enables support for a sloppy logic analyzer using polled
1927 GPIOs. Use the 'tools/gpio/gpio-sloppy-logic-analyzer' script with
1928 this driver. The script will make it easier to use and will also
1929 isolate a CPU for the polling task. Note that this is a last resort
1930 analyzer which can be affected by latencies, non-deterministic code
1931 paths, or NMIs. However, for e.g. remote development, it may be useful
1932 to get a first view and aid further debugging.
1933
1934 If this driver is built as a module it will be called
1935 'gpio-sloppy-logic-analyzer'.
1936
1937config GPIO_VIRTUSER
1938 tristate "GPIO Virtual User Testing Module"
1939 select DEBUG_FS
1940 select CONFIGFS_FS
1941 select IRQ_WORK
1942 help
1943 Say Y here to enable the configurable, configfs-based virtual GPIO
1944 consumer testing driver.
1945
1946 This driver is aimed as a helper in spotting any regressions in
1947 hot-unplug handling in GPIOLIB.
1948
1949endmenu
1950
1951endif