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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
6config ARCH_HAVE_CUSTOM_GPIO_H
7 bool
8 help
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
12 strongly discouraged.
13
14menuconfig GPIOLIB
15 bool "GPIO Support"
16 help
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
20
21 If unsure, say N.
22
23if GPIOLIB
24
25config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
27 range 32 512
28 default 512
29 help
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
32
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
36
37config OF_GPIO
38 def_bool y
39 depends on OF
40 depends on HAS_IOMEM
41
42config GPIO_ACPI
43 def_bool y
44 depends on ACPI
45
46config GPIOLIB_IRQCHIP
47 select IRQ_DOMAIN
48 bool
49
50config DEBUG_GPIO
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
53 help
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
60
61config GPIO_SYSFS
62 bool "/sys/class/gpio/... (sysfs interface)"
63 depends on SYSFS
64 help
65 Say Y here to add the legacy sysfs interface for GPIOs.
66
67 This ABI is deprecated. If you want to use GPIO from userspace,
68 use the character device /dev/gpiochipN with the appropriate
69 ioctl() operations instead. The character device is always
70 available.
71
72config GPIO_GENERIC
73 depends on HAS_IOMEM # Only for IOMEM drivers
74 tristate
75
76config GPIO_REGMAP
77 depends on REGMAP
78 tristate
79
80# put drivers in the right section, in alphabetical order
81
82# This symbol is selected by both I2C and SPI expanders
83config GPIO_MAX730X
84 tristate
85
86menu "Memory mapped GPIO drivers"
87 depends on HAS_IOMEM
88
89config GPIO_74XX_MMIO
90 tristate "GPIO driver for 74xx-ICs with MMIO access"
91 depends on OF_GPIO
92 select GPIO_GENERIC
93 help
94 Say yes here to support GPIO functionality for 74xx-compatible ICs
95 with MMIO access. Compatible models include:
96 1 bit: 741G125 (Input), 741G74 (Output)
97 2 bits: 742G125 (Input), 7474 (Output)
98 4 bits: 74125 (Input), 74175 (Output)
99 6 bits: 74365 (Input), 74174 (Output)
100 8 bits: 74244 (Input), 74273 (Output)
101 16 bits: 741624 (Input), 7416374 (Output)
102
103config GPIO_ALTERA
104 tristate "Altera GPIO"
105 depends on OF_GPIO
106 select GPIOLIB_IRQCHIP
107 help
108 Say Y or M here to build support for the Altera PIO device.
109
110 If driver is built as a module it will be called gpio-altera.
111
112config GPIO_AMDPT
113 tristate "AMD Promontory GPIO support"
114 depends on ACPI
115 select GPIO_GENERIC
116 help
117 driver for GPIO functionality on Promontory IOHub
118 Require ACPI ASL code to enumerate as a platform device.
119
120config GPIO_ASPEED
121 tristate "Aspeed GPIO support"
122 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
123 select GPIOLIB_IRQCHIP
124 help
125 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
126
127config GPIO_ASPEED_SGPIO
128 bool "Aspeed SGPIO support"
129 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
130 select GPIO_GENERIC
131 select GPIOLIB_IRQCHIP
132 help
133 Say Y here to support Aspeed AST2500 SGPIO functionality.
134
135config GPIO_ATH79
136 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
137 default y if ATH79
138 depends on ATH79 || COMPILE_TEST
139 select GPIO_GENERIC
140 select GPIOLIB_IRQCHIP
141 help
142 Select this option to enable GPIO driver for
143 Atheros AR71XX/AR724X/AR913X SoC devices.
144
145config GPIO_RASPBERRYPI_EXP
146 tristate "Raspberry Pi 3 GPIO Expander"
147 default RASPBERRYPI_FIRMWARE
148 depends on OF_GPIO
149 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
150 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
151 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
152 help
153 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
154 the firmware mailbox to communicate with VideoCore on BCM283x chips.
155
156config GPIO_BCM_KONA
157 bool "Broadcom Kona GPIO"
158 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
159 help
160 Turn on GPIO support for Broadcom "Kona" chips.
161
162config GPIO_BCM_XGS_IPROC
163 tristate "BRCM XGS iProc GPIO support"
164 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
165 select GPIO_GENERIC
166 select GPIOLIB_IRQCHIP
167 default ARCH_BCM_IPROC
168 help
169 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
170
171config GPIO_BRCMSTB
172 tristate "BRCMSTB GPIO support"
173 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
174 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
175 select GPIO_GENERIC
176 select IRQ_DOMAIN
177 help
178 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
179
180config GPIO_CADENCE
181 tristate "Cadence GPIO support"
182 depends on OF_GPIO
183 select GPIO_GENERIC
184 select GPIOLIB_IRQCHIP
185 help
186 Say yes here to enable support for Cadence GPIO controller.
187
188config GPIO_CLPS711X
189 tristate "CLPS711X GPIO support"
190 depends on ARCH_CLPS711X || COMPILE_TEST
191 select GPIO_GENERIC
192 help
193 Say yes here to support GPIO on CLPS711X SoCs.
194
195config GPIO_DAVINCI
196 bool "TI Davinci/Keystone GPIO support"
197 default y if ARCH_DAVINCI
198 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
199 help
200 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
201
202config GPIO_DWAPB
203 tristate "Synopsys DesignWare APB GPIO driver"
204 select GPIO_GENERIC
205 select GENERIC_IRQ_CHIP
206 help
207 Say Y or M here to build support for the Synopsys DesignWare APB
208 GPIO block.
209
210config GPIO_EIC_SPRD
211 tristate "Spreadtrum EIC support"
212 depends on ARCH_SPRD || COMPILE_TEST
213 depends on OF_GPIO
214 select GPIOLIB_IRQCHIP
215 help
216 Say yes here to support Spreadtrum EIC device.
217
218config GPIO_EM
219 tristate "Emma Mobile GPIO"
220 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
221 help
222 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
223
224config GPIO_EP93XX
225 def_bool y
226 depends on ARCH_EP93XX
227 select GPIO_GENERIC
228 select GPIOLIB_IRQCHIP
229
230config GPIO_EXAR
231 tristate "Support for GPIO pins on XR17V352/354/358"
232 depends on SERIAL_8250_EXAR
233 help
234 Selecting this option will enable handling of GPIO pins present
235 on Exar XR17V352/354/358 chips.
236
237config GPIO_GE_FPGA
238 bool "GE FPGA based GPIO"
239 depends on GE_FPGA
240 select GPIO_GENERIC
241 help
242 Support for common GPIO functionality provided on some GE Single Board
243 Computers.
244
245 This driver provides basic support (configure as input or output, read
246 and write pin state) for GPIO implemented in a number of GE single
247 board computers.
248
249config GPIO_FTGPIO010
250 bool "Faraday FTGPIO010 GPIO"
251 depends on OF_GPIO
252 select GPIO_GENERIC
253 select GPIOLIB_IRQCHIP
254 default (ARCH_GEMINI || ARCH_MOXART)
255 help
256 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
257 Cortina systems Gemini platforms, Moxa ART and others.
258
259config GPIO_GENERIC_PLATFORM
260 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
261 select GPIO_GENERIC
262 help
263 Say yes here to support basic platform_device memory-mapped GPIO controllers.
264
265config GPIO_GRGPIO
266 tristate "Aeroflex Gaisler GRGPIO support"
267 depends on OF_GPIO
268 select GPIO_GENERIC
269 select IRQ_DOMAIN
270 help
271 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
272 VHDL IP core library.
273
274config GPIO_HLWD
275 tristate "Nintendo Wii (Hollywood) GPIO"
276 depends on OF_GPIO
277 select GPIO_GENERIC
278 select GPIOLIB_IRQCHIP
279 help
280 Select this to support the GPIO controller of the Nintendo Wii.
281
282 If unsure, say N.
283
284config GPIO_ICH
285 tristate "Intel ICH GPIO"
286 depends on PCI && X86
287 select MFD_CORE
288 select LPC_ICH
289 help
290 Say yes here to support the GPIO functionality of a number of Intel
291 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
292 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
293 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
294
295 If unsure, say N.
296
297config GPIO_IOP
298 tristate "Intel IOP GPIO"
299 depends on ARCH_IOP32X || COMPILE_TEST
300 select GPIO_GENERIC
301 help
302 Say yes here to support the GPIO functionality of a number of Intel
303 IOP32X or IOP33X.
304
305 If unsure, say N.
306
307config GPIO_IXP4XX
308 bool "Intel IXP4xx GPIO"
309 depends on ARM # For <asm/mach-types.h>
310 depends on ARCH_IXP4XX
311 select GPIO_GENERIC
312 select GPIOLIB_IRQCHIP
313 select IRQ_DOMAIN_HIERARCHY
314 help
315 Say yes here to support the GPIO functionality of a number of Intel
316 IXP4xx series of chips.
317
318 If unsure, say N.
319config GPIO_LOGICVC
320 tristate "Xylon LogiCVC GPIO support"
321 depends on MFD_SYSCON && OF
322 help
323 Say yes here to support GPIO functionality of the Xylon LogiCVC
324 programmable logic block.
325
326config GPIO_LOONGSON
327 bool "Loongson-2/3 GPIO support"
328 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
329 help
330 driver for GPIO functionality on Loongson-2F/3A/3B processors.
331
332config GPIO_LPC18XX
333 tristate "NXP LPC18XX/43XX GPIO support"
334 default y if ARCH_LPC18XX
335 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
336 select IRQ_DOMAIN_HIERARCHY
337 help
338 Select this option to enable GPIO driver for
339 NXP LPC18XX/43XX devices.
340
341config GPIO_LPC32XX
342 tristate "NXP LPC32XX GPIO support"
343 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
344 help
345 Select this option to enable GPIO driver for
346 NXP LPC32XX devices.
347
348config GPIO_MB86S7X
349 tristate "GPIO support for Fujitsu MB86S7x Platforms"
350 help
351 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
352
353config GPIO_MENZ127
354 tristate "MEN 16Z127 GPIO support"
355 depends on MCB
356 select GPIO_GENERIC
357 help
358 Say yes here to support the MEN 16Z127 GPIO Controller
359
360config GPIO_MM_LANTIQ
361 bool "Lantiq Memory mapped GPIOs"
362 depends on LANTIQ && SOC_XWAY
363 help
364 This enables support for memory mapped GPIOs on the External Bus Unit
365 (EBU) found on Lantiq SoCs. The gpios are output only as they are
366 created by attaching a 16bit latch to the bus.
367
368config GPIO_MPC5200
369 def_bool y
370 depends on PPC_MPC52xx
371
372config GPIO_MPC8XXX
373 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
374 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
375 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
376 COMPILE_TEST
377 select GPIO_GENERIC
378 select IRQ_DOMAIN
379 help
380 Say Y here if you're going to use hardware that connects to the
381 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
382
383config GPIO_MT7621
384 bool "Mediatek MT7621 GPIO Support"
385 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
386 depends on OF_GPIO
387 select GPIO_GENERIC
388 select GPIOLIB_IRQCHIP
389 help
390 Say yes here to support the Mediatek MT7621 SoC GPIO device
391
392config GPIO_MVEBU
393 def_bool y
394 depends on PLAT_ORION || ARCH_MVEBU
395 depends on OF_GPIO
396 select GENERIC_IRQ_CHIP
397 select REGMAP_MMIO
398
399config GPIO_MXC
400 def_bool y
401 depends on ARCH_MXC || COMPILE_TEST
402 select GPIO_GENERIC
403 select GENERIC_IRQ_CHIP
404
405config GPIO_MXS
406 def_bool y
407 depends on ARCH_MXS || COMPILE_TEST
408 select GPIO_GENERIC
409 select GENERIC_IRQ_CHIP
410
411config GPIO_OCTEON
412 tristate "Cavium OCTEON GPIO"
413 depends on CAVIUM_OCTEON_SOC
414 default y
415 help
416 Say yes here to support the on-chip GPIO lines on the OCTEON
417 family of SOCs.
418
419config GPIO_OMAP
420 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
421 default y if ARCH_OMAP
422 depends on ARM
423 select GENERIC_IRQ_CHIP
424 select GPIOLIB_IRQCHIP
425 help
426 Say yes here to enable GPIO support for TI OMAP SoCs.
427
428config GPIO_PL061
429 tristate "PrimeCell PL061 GPIO support"
430 depends on ARM_AMBA
431 select IRQ_DOMAIN
432 select GPIOLIB_IRQCHIP
433 help
434 Say yes here to support the PrimeCell PL061 GPIO device
435
436config GPIO_PMIC_EIC_SPRD
437 tristate "Spreadtrum PMIC EIC support"
438 depends on MFD_SC27XX_PMIC || COMPILE_TEST
439 depends on OF_GPIO
440 select GPIOLIB_IRQCHIP
441 help
442 Say yes here to support Spreadtrum PMIC EIC device.
443
444config GPIO_PXA
445 bool "PXA GPIO support"
446 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
447 help
448 Say yes here to support the PXA GPIO device
449
450config GPIO_RCAR
451 tristate "Renesas R-Car GPIO"
452 depends on ARCH_RENESAS || COMPILE_TEST
453 select GPIOLIB_IRQCHIP
454 help
455 Say yes here to support GPIO on Renesas R-Car SoCs.
456
457config GPIO_RDA
458 bool "RDA Micro GPIO controller support"
459 depends on ARCH_RDA || COMPILE_TEST
460 depends on OF_GPIO
461 select GPIO_GENERIC
462 select GPIOLIB_IRQCHIP
463 help
464 Say Y here to support RDA Micro GPIO controller.
465
466config GPIO_REG
467 bool
468 help
469 A 32-bit single register GPIO fixed in/out implementation. This
470 can be used to represent any register as a set of GPIO signals.
471
472config GPIO_SAMA5D2_PIOBU
473 tristate "SAMA5D2 PIOBU GPIO support"
474 depends on MFD_SYSCON
475 depends on OF_GPIO
476 select GPIO_SYSCON
477 help
478 Say yes here to use the PIOBU pins as GPIOs.
479
480 PIOBU pins on the SAMA5D2 can be used as GPIOs.
481 The difference from regular GPIOs is that they
482 maintain their value during backup/self-refresh.
483
484config GPIO_SIFIVE
485 bool "SiFive GPIO support"
486 depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
487 select GPIO_GENERIC
488 select GPIOLIB_IRQCHIP
489 select REGMAP_MMIO
490 help
491 Say yes here to support the GPIO device on SiFive SoCs.
492
493config GPIO_SIOX
494 tristate "SIOX GPIO support"
495 depends on SIOX
496 select GPIOLIB_IRQCHIP
497 help
498 Say yes here to support SIOX I/O devices. These are units connected
499 via a SIOX bus and have a number of fixed-direction I/O lines.
500
501config GPIO_SNPS_CREG
502 bool "Synopsys GPIO via CREG (Control REGisters) driver"
503 depends on ARC || COMPILE_TEST
504 depends on OF_GPIO
505 help
506 This driver supports GPIOs via CREG on various Synopsys SoCs.
507 This is a single-register MMIO GPIO driver for complex cases
508 where only several fields in register belong to GPIO lines and
509 each GPIO line owns a field with different length and on/off value.
510
511config GPIO_SPEAR_SPICS
512 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
513 depends on PLAT_SPEAR
514 select GENERIC_IRQ_CHIP
515 help
516 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
517
518config GPIO_SPRD
519 tristate "Spreadtrum GPIO support"
520 depends on ARCH_SPRD || COMPILE_TEST
521 depends on OF_GPIO
522 select GPIOLIB_IRQCHIP
523 help
524 Say yes here to support Spreadtrum GPIO device.
525
526config GPIO_STA2X11
527 bool "STA2x11/ConneXt GPIO support"
528 depends on MFD_STA2X11
529 select GENERIC_IRQ_CHIP
530 help
531 Say yes here to support the STA2x11/ConneXt GPIO device.
532 The GPIO module has 128 GPIO pins with alternate functions.
533
534config GPIO_STP_XWAY
535 bool "XWAY STP GPIOs"
536 depends on SOC_XWAY || COMPILE_TEST
537 depends on OF_GPIO
538 help
539 This enables support for the Serial To Parallel (STP) unit found on
540 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
541 that can be up to 24 bit. This peripheral is aimed at driving leds.
542 Some of the gpios/leds can be auto updated by the soc with dsl and
543 phy status.
544
545config GPIO_SYSCON
546 tristate "GPIO based on SYSCON"
547 depends on MFD_SYSCON && OF
548 help
549 Say yes here to support GPIO functionality though SYSCON driver.
550
551config GPIO_TB10X
552 bool
553 select GPIO_GENERIC
554 select GENERIC_IRQ_CHIP
555 select OF_GPIO
556
557config GPIO_TEGRA
558 bool "NVIDIA Tegra GPIO support"
559 default ARCH_TEGRA
560 depends on ARCH_TEGRA || COMPILE_TEST
561 depends on OF_GPIO
562 help
563 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
564
565config GPIO_TEGRA186
566 tristate "NVIDIA Tegra186 GPIO support"
567 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
568 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
569 depends on OF_GPIO
570 select GPIOLIB_IRQCHIP
571 select IRQ_DOMAIN_HIERARCHY
572 help
573 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
574
575config GPIO_TS4800
576 tristate "TS-4800 DIO blocks and compatibles"
577 depends on OF_GPIO
578 depends on SOC_IMX51 || COMPILE_TEST
579 select GPIO_GENERIC
580 help
581 This driver support TS-4800 FPGA GPIO controllers.
582
583config GPIO_THUNDERX
584 tristate "Cavium ThunderX/OCTEON-TX GPIO"
585 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
586 depends on PCI_MSI
587 select GPIOLIB_IRQCHIP
588 select IRQ_DOMAIN_HIERARCHY
589 select IRQ_FASTEOI_HIERARCHY_HANDLERS
590 help
591 Say yes here to support the on-chip GPIO lines on the ThunderX
592 and OCTEON-TX families of SoCs.
593
594config GPIO_UNIPHIER
595 tristate "UniPhier GPIO support"
596 depends on ARCH_UNIPHIER || COMPILE_TEST
597 depends on OF_GPIO
598 select IRQ_DOMAIN_HIERARCHY
599 help
600 Say yes here to support UniPhier GPIOs.
601
602config GPIO_VF610
603 def_bool y
604 depends on ARCH_MXC && SOC_VF610
605 select GPIOLIB_IRQCHIP
606 help
607 Say yes here to support Vybrid vf610 GPIOs.
608
609config GPIO_VR41XX
610 tristate "NEC VR4100 series General-purpose I/O Uint support"
611 depends on CPU_VR41XX
612 help
613 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
614
615config GPIO_VX855
616 tristate "VIA VX855/VX875 GPIO"
617 depends on (X86 || COMPILE_TEST) && PCI
618 select MFD_CORE
619 select MFD_VX855
620 help
621 Support access to the VX855/VX875 GPIO lines through the gpio library.
622
623 This driver provides common support for accessing the device,
624 additional drivers must be enabled in order to use the
625 functionality of the device.
626
627config GPIO_WCD934X
628 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
629 depends on MFD_WCD934X && OF_GPIO
630 help
631 This driver is to supprot GPIO block found on the Qualcomm Technologies
632 Inc WCD9340/WCD9341 Audio Codec.
633
634config GPIO_XGENE
635 bool "APM X-Gene GPIO controller support"
636 depends on ARM64 && OF_GPIO
637 help
638 This driver is to support the GPIO block within the APM X-Gene SoC
639 platform's generic flash controller. The GPIO pins are muxed with
640 the generic flash controller's address and data pins. Say yes
641 here to enable the GFC GPIO functionality.
642
643config GPIO_XGENE_SB
644 tristate "APM X-Gene GPIO standby controller support"
645 depends on (ARCH_XGENE || COMPILE_TEST)
646 select GPIO_GENERIC
647 select GPIOLIB_IRQCHIP
648 select IRQ_DOMAIN_HIERARCHY
649 help
650 This driver supports the GPIO block within the APM X-Gene
651 Standby Domain. Say yes here to enable the GPIO functionality.
652
653config GPIO_XILINX
654 tristate "Xilinx GPIO support"
655 help
656 Say yes here to support the Xilinx FPGA GPIO device
657
658config GPIO_XLP
659 tristate "Netlogic XLP GPIO support"
660 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
661 select GPIOLIB_IRQCHIP
662 help
663 This driver provides support for GPIO interface on Netlogic XLP MIPS64
664 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
665 XLP9XX and XLP5XX. The same GPIO controller block is also present in
666 Cavium's ThunderX2 CN99XX SoCs.
667
668 If unsure, say N.
669
670config GPIO_XTENSA
671 bool "Xtensa GPIO32 support"
672 depends on XTENSA
673 depends on HAVE_XTENSA_GPIO32
674 depends on !SMP
675 help
676 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
677 and EXPSTATE (output) ports
678
679config GPIO_ZEVIO
680 bool "LSI ZEVIO SoC memory mapped GPIOs"
681 depends on ARM && OF_GPIO
682 help
683 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
684
685config GPIO_ZYNQ
686 tristate "Xilinx Zynq GPIO support"
687 depends on ARCH_ZYNQ || ARCH_ZYNQMP
688 select GPIOLIB_IRQCHIP
689 help
690 Say yes here to support Xilinx Zynq GPIO controller.
691
692config GPIO_ZX
693 bool "ZTE ZX GPIO support"
694 depends on ARCH_ZX || COMPILE_TEST
695 select GPIOLIB_IRQCHIP
696 help
697 Say yes here to support the GPIO device on ZTE ZX SoCs.
698
699config GPIO_LOONGSON1
700 tristate "Loongson1 GPIO support"
701 depends on MACH_LOONGSON32
702 select GPIO_GENERIC
703 help
704 Say Y or M here to support GPIO on Loongson1 SoCs.
705
706config GPIO_AMD_FCH
707 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
708 help
709 This option enables driver for GPIO on AMDs Fusion Controller Hub,
710 as found on G-series SOCs (eg. GX-412TC)
711
712 Note: This driver doesn't registers itself automatically, as it
713 needs to be provided with platform specific configuration.
714 (See eg. CONFIG_PCENGINES_APU2.)
715endmenu
716
717menu "Port-mapped I/O GPIO drivers"
718 depends on X86 # Unconditional I/O space access
719
720config GPIO_104_DIO_48E
721 tristate "ACCES 104-DIO-48E GPIO support"
722 depends on PC104
723 select ISA_BUS_API
724 select GPIOLIB_IRQCHIP
725 help
726 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
727 104-DIO-24E). The base port addresses for the devices may be
728 configured via the base module parameter. The interrupt line numbers
729 for the devices may be configured via the irq module parameter.
730
731config GPIO_104_IDIO_16
732 tristate "ACCES 104-IDIO-16 GPIO support"
733 depends on PC104
734 select ISA_BUS_API
735 select GPIOLIB_IRQCHIP
736 help
737 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
738 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
739 base port addresses for the devices may be configured via the base
740 module parameter. The interrupt line numbers for the devices may be
741 configured via the irq module parameter.
742
743config GPIO_104_IDI_48
744 tristate "ACCES 104-IDI-48 GPIO support"
745 depends on PC104
746 select ISA_BUS_API
747 select GPIOLIB_IRQCHIP
748 help
749 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
750 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
751 the devices may be configured via the base module parameter. The
752 interrupt line numbers for the devices may be configured via the irq
753 module parameter.
754
755config GPIO_F7188X
756 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
757 help
758 This option enables support for GPIOs found on Fintek Super-I/O
759 chips F71869, F71869A, F71882FG, F71889F and F81866.
760
761 To compile this driver as a module, choose M here: the module will
762 be called f7188x-gpio.
763
764config GPIO_GPIO_MM
765 tristate "Diamond Systems GPIO-MM GPIO support"
766 depends on PC104
767 select ISA_BUS_API
768 help
769 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
770
771 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
772 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
773 support for these 48 channels of digital I/O.
774
775 The base port addresses for the devices may be configured via the base
776 array module parameter.
777
778config GPIO_IT87
779 tristate "IT87xx GPIO support"
780 help
781 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
782
783 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
784 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
785 well.
786
787 To compile this driver as a module, choose M here: the module will
788 be called gpio_it87
789
790config GPIO_SCH
791 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
792 depends on (X86 || COMPILE_TEST) && PCI
793 select MFD_CORE
794 select LPC_SCH
795 help
796 Say yes here to support GPIO interface on Intel Poulsbo SCH,
797 Intel Tunnel Creek processor, Intel Centerton processor or
798 Intel Quark X1000 SoC.
799
800 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
801 powered by the core power rail and are turned off during sleep
802 modes (S3 and higher). The remaining four GPIOs are powered by
803 the Intel SCH suspend power supply. These GPIOs remain
804 active during S3. The suspend powered GPIOs can be used to wake the
805 system from the Suspend-to-RAM state.
806
807 The Intel Tunnel Creek processor has 5 GPIOs powered by the
808 core power rail and 9 from suspend power supply.
809
810 The Intel Centerton processor has a total of 30 GPIO pins.
811 Twenty-one are powered by the core power rail and 9 from the
812 suspend power supply.
813
814 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
815 power well and 6 from the suspend power well.
816
817config GPIO_SCH311X
818 tristate "SMSC SCH311x SuperI/O GPIO"
819 help
820 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
821 SCH3116 "Super I/O" chipsets.
822
823 To compile this driver as a module, choose M here: the module will
824 be called gpio-sch311x.
825
826config GPIO_TS5500
827 tristate "TS-5500 DIO blocks and compatibles"
828 depends on TS5500 || COMPILE_TEST
829 help
830 This driver supports Digital I/O exposed by pin blocks found on some
831 Technologic Systems platforms. It includes, but is not limited to, 3
832 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
833 LCD port.
834
835config GPIO_WINBOND
836 tristate "Winbond Super I/O GPIO support"
837 select ISA_BUS_API
838 help
839 This option enables support for GPIOs found on Winbond Super I/O
840 chips.
841 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
842 supported.
843
844 You will need to provide a module parameter "gpios", or a
845 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
846 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
847
848 To compile this driver as a module, choose M here: the module will
849 be called gpio-winbond.
850
851config GPIO_WS16C48
852 tristate "WinSystems WS16C48 GPIO support"
853 select ISA_BUS_API
854 select GPIOLIB_IRQCHIP
855 help
856 Enables GPIO support for the WinSystems WS16C48. The base port
857 addresses for the devices may be configured via the base module
858 parameter. The interrupt line numbers for the devices may be
859 configured via the irq module parameter.
860
861endmenu
862
863menu "I2C GPIO expanders"
864 depends on I2C
865
866config GPIO_ADP5588
867 tristate "ADP5588 I2C GPIO expander"
868 help
869 This option enables support for 18 GPIOs found
870 on Analog Devices ADP5588 GPIO Expanders.
871
872config GPIO_ADP5588_IRQ
873 bool "Interrupt controller support for ADP5588"
874 depends on GPIO_ADP5588=y
875 select GPIOLIB_IRQCHIP
876 help
877 Say yes here to enable the adp5588 to be used as an interrupt
878 controller. It requires the driver to be built in the kernel.
879
880config GPIO_ADNP
881 tristate "Avionic Design N-bit GPIO expander"
882 depends on OF_GPIO
883 select GPIOLIB_IRQCHIP
884 help
885 This option enables support for N GPIOs found on Avionic Design
886 I2C GPIO expanders. The register space will be extended by powers
887 of two, so the controller will need to accommodate for that. For
888 example: if a controller provides 48 pins, 6 registers will be
889 enough to represent all pins, but the driver will assume a
890 register layout for 64 pins (8 registers).
891
892config GPIO_GW_PLD
893 tristate "Gateworks PLD GPIO Expander"
894 depends on OF_GPIO
895 help
896 Say yes here to provide access to the Gateworks I2C PLD GPIO
897 Expander. This is used at least on the Cambria GW2358-4.
898
899config GPIO_MAX7300
900 tristate "Maxim MAX7300 GPIO expander"
901 select GPIO_MAX730X
902 help
903 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
904
905config GPIO_MAX732X
906 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
907 help
908 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
909 Port Expanders. Each IO port on these chips has a fixed role of
910 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
911 Input and Output (designed by 'P'). The combinations are listed
912 below:
913
914 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
915 max7322 (4I4O), max7323 (4P4O)
916
917 16 bits: max7324 (8I8O), max7325 (8P8O),
918 max7326 (4I12O), max7327 (4P12O)
919
920 Board setup code must specify the model to use, and the start
921 number for these GPIOs.
922
923config GPIO_MAX732X_IRQ
924 bool "Interrupt controller support for MAX732x"
925 depends on GPIO_MAX732X=y
926 select GPIOLIB_IRQCHIP
927 help
928 Say yes here to enable the max732x to be used as an interrupt
929 controller. It requires the driver to be built in the kernel.
930
931config GPIO_MC9S08DZ60
932 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
933 depends on I2C=y && MACH_MX35_3DS
934 help
935 Select this to enable the MC9S08DZ60 GPIO driver
936
937config GPIO_PCA953X
938 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
939 select REGMAP_I2C
940 help
941 Say yes here to provide access to several register-oriented
942 SMBus I/O expanders, made mostly by NXP or TI. Compatible
943 models include:
944
945 4 bits: pca9536, pca9537
946
947 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
948 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
949
950 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
951 tca6416
952
953 24 bits: tca6424
954
955 40 bits: pca9505, pca9698
956
957config GPIO_PCA953X_IRQ
958 bool "Interrupt controller support for PCA953x"
959 depends on GPIO_PCA953X
960 select GPIOLIB_IRQCHIP
961 help
962 Say yes here to enable the pca953x to be used as an interrupt
963 controller. It requires the driver to be built in the kernel.
964
965config GPIO_PCA9570
966 tristate "PCA9570 4-Bit I2C GPO expander"
967 help
968 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
969
970 To compile this driver as a module, choose M here: the module will
971 be called gpio-pca9570.
972
973config GPIO_PCF857X
974 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
975 select GPIOLIB_IRQCHIP
976 select IRQ_DOMAIN
977 help
978 Say yes here to provide access to most "quasi-bidirectional" I2C
979 GPIO expanders used for additional digital outputs or inputs.
980 Most of these parts are from NXP, though TI is a second source for
981 some of them. Compatible models include:
982
983 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
984 pca9670, pca9672, pca9674, pca9674a,
985 max7328, max7329
986
987 16 bits: pcf8575, pcf8575c, pca8575,
988 pca9671, pca9673, pca9675
989
990 Your board setup code will need to declare the expanders in
991 use, and assign numbers to the GPIOs they expose. Those GPIOs
992 can then be used from drivers and other kernel code, just like
993 other GPIOs, but only accessible from task contexts.
994
995 This driver provides an in-kernel interface to those GPIOs using
996 platform-neutral GPIO calls.
997
998config GPIO_TPIC2810
999 tristate "TPIC2810 8-Bit I2C GPO expander"
1000 help
1001 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1002
1003 To compile this driver as a module, choose M here: the module will
1004 be called gpio-tpic2810.
1005
1006config GPIO_TS4900
1007 tristate "Technologic Systems FPGA I2C GPIO"
1008 depends on SOC_IMX6 || COMPILE_TEST
1009 select REGMAP_I2C
1010 help
1011 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1012 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1013
1014endmenu
1015
1016menu "MFD GPIO expanders"
1017
1018config GPIO_ADP5520
1019 tristate "GPIO Support for ADP5520 PMIC"
1020 depends on PMIC_ADP5520
1021 help
1022 This option enables support for on-chip GPIO found
1023 on Analog Devices ADP5520 PMICs.
1024
1025config GPIO_ALTERA_A10SR
1026 tristate "Altera Arria10 System Resource GPIO"
1027 depends on MFD_ALTERA_A10SR
1028 help
1029 Driver for Arria10 Development Kit GPIO expansion which
1030 includes reads of pushbuttons and DIP switches as well
1031 as writes to LEDs.
1032
1033config GPIO_ARIZONA
1034 tristate "Wolfson Microelectronics Arizona class devices"
1035 depends on MFD_ARIZONA
1036 help
1037 Support for GPIOs on Wolfson Arizona class devices.
1038
1039config GPIO_BD70528
1040 tristate "ROHM BD70528 GPIO support"
1041 depends on MFD_ROHM_BD70528
1042 help
1043 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1044 available on the ROHM PMIC in total. The GPIOs can also
1045 generate interrupts.
1046
1047 This driver can also be built as a module. If so, the module
1048 will be called gpio-bd70528.
1049
1050config GPIO_BD71828
1051 tristate "ROHM BD71828 GPIO support"
1052 depends on MFD_ROHM_BD71828
1053 help
1054 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1055 available on the ROHM PMIC in total. The GPIOs are limited to
1056 outputs only and pins must be configured to GPIO outputs by
1057 OTP. Enable this only if you want to use these pins as outputs.
1058
1059 This driver can also be built as a module. If so, the module
1060 will be called gpio-bd71828.
1061
1062config GPIO_BD9571MWV
1063 tristate "ROHM BD9571 GPIO support"
1064 depends on MFD_BD9571MWV
1065 help
1066 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1067 available on the ROHM PMIC in total, both of which can also
1068 generate interrupts.
1069
1070 This driver can also be built as a module. If so, the module
1071 will be called gpio-bd9571mwv.
1072
1073config GPIO_CRYSTAL_COVE
1074 tristate "GPIO support for Crystal Cove PMIC"
1075 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1076 select GPIOLIB_IRQCHIP
1077 help
1078 Support for GPIO pins on Crystal Cove PMIC.
1079
1080 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1081 inside.
1082
1083 This driver can also be built as a module. If so, the module will be
1084 called gpio-crystalcove.
1085
1086config GPIO_CS5535
1087 tristate "AMD CS5535/CS5536 GPIO support"
1088 depends on X86 || MIPS || COMPILE_TEST
1089 depends on MFD_CS5535
1090 help
1091 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1092 can be used for quite a number of things. The CS5535/6 is found on
1093 AMD Geode and Lemote Yeeloong devices.
1094
1095 If unsure, say N.
1096
1097config GPIO_DA9052
1098 tristate "Dialog DA9052 GPIO"
1099 depends on PMIC_DA9052
1100 help
1101 Say yes here to enable the GPIO driver for the DA9052 chip.
1102
1103config GPIO_DA9055
1104 tristate "Dialog Semiconductor DA9055 GPIO"
1105 depends on MFD_DA9055
1106 help
1107 Say yes here to enable the GPIO driver for the DA9055 chip.
1108
1109 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1110 be controller by this driver.
1111
1112 If driver is built as a module it will be called gpio-da9055.
1113
1114config GPIO_DLN2
1115 tristate "Diolan DLN2 GPIO support"
1116 depends on MFD_DLN2
1117 select GPIOLIB_IRQCHIP
1118
1119 help
1120 Select this option to enable GPIO driver for the Diolan DLN2
1121 board.
1122
1123 This driver can also be built as a module. If so, the module
1124 will be called gpio-dln2.
1125
1126config HTC_EGPIO
1127 bool "HTC EGPIO support"
1128 depends on ARM
1129 help
1130 This driver supports the CPLD egpio chip present on
1131 several HTC phones. It provides basic support for input
1132 pins, output pins, and irqs.
1133
1134config GPIO_JANZ_TTL
1135 tristate "Janz VMOD-TTL Digital IO Module"
1136 depends on MFD_JANZ_CMODIO
1137 help
1138 This enables support for the Janz VMOD-TTL Digital IO module.
1139 This driver provides support for driving the pins in output
1140 mode only. Input mode is not supported.
1141
1142config GPIO_KEMPLD
1143 tristate "Kontron ETX / COMexpress GPIO"
1144 depends on MFD_KEMPLD
1145 help
1146 This enables support for the PLD GPIO interface on some Kontron ETX
1147 and COMexpress (ETXexpress) modules.
1148
1149 This driver can also be built as a module. If so, the module will be
1150 called gpio-kempld.
1151
1152config GPIO_LP3943
1153 tristate "TI/National Semiconductor LP3943 GPIO expander"
1154 depends on MFD_LP3943
1155 help
1156 GPIO driver for LP3943 MFD.
1157 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1158 Open drain outputs are required for this usage.
1159
1160config GPIO_LP873X
1161 tristate "TI LP873X GPO"
1162 depends on MFD_TI_LP873X
1163 help
1164 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1165 on LP873X PMICs.
1166
1167 This driver can also be built as a module. If so, the module will be
1168 called gpio-lp873x.
1169
1170config GPIO_LP87565
1171 tristate "TI LP87565 GPIO"
1172 depends on MFD_TI_LP87565
1173 help
1174 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1175 on LP87565 PMICs.
1176
1177 This driver can also be built as a module. If so, the module will be
1178 called gpio-lp87565.
1179
1180config GPIO_MADERA
1181 tristate "Cirrus Logic Madera class codecs"
1182 depends on PINCTRL_MADERA
1183 help
1184 Support for GPIOs on Cirrus Logic Madera class codecs.
1185
1186config GPIO_MAX77620
1187 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1188 depends on MFD_MAX77620
1189 select GPIOLIB_IRQCHIP
1190 help
1191 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1192 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1193 driver also provides interrupt support for each of the gpios.
1194 Say yes here to enable the max77620 to be used as gpio controller.
1195
1196config GPIO_MAX77650
1197 tristate "Maxim MAX77650/77651 GPIO support"
1198 depends on MFD_MAX77650
1199 help
1200 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1201 These chips have a single pin that can be configured as GPIO.
1202
1203config GPIO_MSIC
1204 bool "Intel MSIC mixed signal gpio support"
1205 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1206 help
1207 Enable support for GPIO on intel MSIC controllers found in
1208 intel MID devices
1209
1210config GPIO_PALMAS
1211 bool "TI PALMAS series PMICs GPIO"
1212 depends on MFD_PALMAS
1213 help
1214 Select this option to enable GPIO driver for the TI PALMAS
1215 series chip family.
1216
1217config GPIO_RC5T583
1218 bool "RICOH RC5T583 GPIO"
1219 depends on MFD_RC5T583
1220 help
1221 Select this option to enable GPIO driver for the Ricoh RC5T583
1222 chip family.
1223 This driver provides the support for driving/reading the gpio pins
1224 of RC5T583 device through standard gpio library.
1225
1226config GPIO_STMPE
1227 bool "STMPE GPIOs"
1228 depends on MFD_STMPE
1229 depends on OF_GPIO
1230 select GPIOLIB_IRQCHIP
1231 help
1232 This enables support for the GPIOs found on the STMPE I/O
1233 Expanders.
1234
1235config GPIO_TC3589X
1236 bool "TC3589X GPIOs"
1237 depends on MFD_TC3589X
1238 depends on OF_GPIO
1239 select GPIOLIB_IRQCHIP
1240 help
1241 This enables support for the GPIOs found on the TC3589X
1242 I/O Expander.
1243
1244config GPIO_TIMBERDALE
1245 bool "Support for timberdale GPIO IP"
1246 depends on MFD_TIMBERDALE
1247 help
1248 Add support for the GPIO IP in the timberdale FPGA.
1249
1250config GPIO_TPS65086
1251 tristate "TI TPS65086 GPO"
1252 depends on MFD_TPS65086
1253 help
1254 This driver supports the GPO on TI TPS65086x PMICs.
1255
1256config GPIO_TPS65218
1257 tristate "TPS65218 GPIO"
1258 depends on MFD_TPS65218
1259 help
1260 Select this option to enable GPIO driver for the TPS65218
1261 chip family.
1262
1263config GPIO_TPS6586X
1264 bool "TPS6586X GPIO"
1265 depends on MFD_TPS6586X
1266 help
1267 Select this option to enable GPIO driver for the TPS6586X
1268 chip family.
1269
1270config GPIO_TPS65910
1271 bool "TPS65910 GPIO"
1272 depends on MFD_TPS65910
1273 help
1274 Select this option to enable GPIO driver for the TPS65910
1275 chip family.
1276
1277config GPIO_TPS65912
1278 tristate "TI TPS65912 GPIO"
1279 depends on MFD_TPS65912
1280 help
1281 This driver supports TPS65912 gpio chip
1282
1283config GPIO_TPS68470
1284 bool "TPS68470 GPIO"
1285 depends on MFD_TPS68470
1286 help
1287 Select this option to enable GPIO driver for the TPS68470
1288 chip family.
1289 There are 7 GPIOs and few sensor related GPIOs supported
1290 by the TPS68470. While the 7 GPIOs can be configured as
1291 input or output as appropriate, the sensor related GPIOs
1292 are "output only" GPIOs.
1293
1294 This driver config is bool, as the GPIO functionality
1295 of the TPS68470 must be available before dependent
1296 drivers are loaded.
1297
1298config GPIO_TQMX86
1299 tristate "TQ-Systems QTMX86 GPIO"
1300 depends on MFD_TQMX86 || COMPILE_TEST
1301 select GPIOLIB_IRQCHIP
1302 help
1303 This driver supports GPIO on the TQMX86 IO controller.
1304
1305config GPIO_TWL4030
1306 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1307 depends on TWL4030_CORE
1308 help
1309 Say yes here to access the GPIO signals of various multi-function
1310 power management chips from Texas Instruments.
1311
1312config GPIO_TWL6040
1313 tristate "TWL6040 GPO"
1314 depends on TWL6040_CORE
1315 help
1316 Say yes here to access the GPO signals of twl6040
1317 audio chip from Texas Instruments.
1318
1319config GPIO_UCB1400
1320 tristate "Philips UCB1400 GPIO"
1321 depends on UCB1400_CORE
1322 help
1323 This enables support for the Philips UCB1400 GPIO pins.
1324 The UCB1400 is an AC97 audio codec.
1325
1326config GPIO_WHISKEY_COVE
1327 tristate "GPIO support for Whiskey Cove PMIC"
1328 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1329 select GPIOLIB_IRQCHIP
1330 help
1331 Support for GPIO pins on Whiskey Cove PMIC.
1332
1333 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1334 inside.
1335
1336 This driver can also be built as a module. If so, the module will be
1337 called gpio-wcove.
1338
1339config GPIO_WM831X
1340 tristate "WM831x GPIOs"
1341 depends on MFD_WM831X
1342 help
1343 Say yes here to access the GPIO signals of WM831x power management
1344 chips from Wolfson Microelectronics.
1345
1346config GPIO_WM8350
1347 tristate "WM8350 GPIOs"
1348 depends on MFD_WM8350
1349 help
1350 Say yes here to access the GPIO signals of WM8350 power management
1351 chips from Wolfson Microelectronics.
1352
1353config GPIO_WM8994
1354 tristate "WM8994 GPIOs"
1355 depends on MFD_WM8994
1356 help
1357 Say yes here to access the GPIO signals of WM8994 audio hub
1358 CODECs from Wolfson Microelectronics.
1359
1360endmenu
1361
1362menu "PCI GPIO expanders"
1363 depends on PCI
1364
1365config GPIO_AMD8111
1366 tristate "AMD 8111 GPIO driver"
1367 depends on X86 || COMPILE_TEST
1368 help
1369 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1370
1371 Note, that usually system firmware/ACPI handles GPIO pins on their
1372 own and users might easily break their systems with uncarefull usage
1373 of this driver!
1374
1375 If unsure, say N
1376
1377config GPIO_BT8XX
1378 tristate "BT8XX GPIO abuser"
1379 depends on VIDEO_BT848=n
1380 help
1381 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1382 as a cheap PCI GPIO card.
1383
1384 This chip can be found on Miro, Hauppauge and STB TV-cards.
1385
1386 The card needs to be physically altered for using it as a
1387 GPIO card. For more information on how to build a GPIO card
1388 from a BT8xx TV card, see the documentation file at
1389 Documentation/driver-api/gpio/bt8xxgpio.rst
1390
1391 If unsure, say N.
1392
1393config GPIO_INTEL_MID
1394 bool "Intel MID GPIO support"
1395 depends on X86_INTEL_MID
1396 select GPIOLIB_IRQCHIP
1397 help
1398 Say Y here to support Intel MID GPIO.
1399
1400config GPIO_MERRIFIELD
1401 tristate "Intel Merrifield GPIO support"
1402 depends on X86_INTEL_MID
1403 select GPIOLIB_IRQCHIP
1404 help
1405 Say Y here to support Intel Merrifield GPIO.
1406
1407config GPIO_MLXBF
1408 tristate "Mellanox BlueField SoC GPIO"
1409 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1410 select GPIO_GENERIC
1411 help
1412 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1413
1414config GPIO_MLXBF2
1415 tristate "Mellanox BlueField 2 SoC GPIO"
1416 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1417 select GPIO_GENERIC
1418 help
1419 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1420
1421config GPIO_ML_IOH
1422 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1423 depends on X86 || COMPILE_TEST
1424 select GENERIC_IRQ_CHIP
1425 help
1426 ML7213 is companion chip for Intel Atom E6xx series.
1427 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1428 Hub) which is for IVI(In-Vehicle Infotainment) use.
1429 This driver can access the IOH's GPIO device.
1430
1431config GPIO_PCH
1432 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1433 depends on X86_32 || MIPS || COMPILE_TEST
1434 select GENERIC_IRQ_CHIP
1435 help
1436 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1437 which is an IOH(Input/Output Hub) for x86 embedded processor.
1438 This driver can access PCH GPIO device.
1439
1440 This driver also can be used for LAPIS Semiconductor IOH(Input/
1441 Output Hub), ML7223 and ML7831.
1442 ML7223 IOH is for MP(Media Phone) use.
1443 ML7831 IOH is for general purpose use.
1444 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1445 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1446
1447config GPIO_PCI_IDIO_16
1448 tristate "ACCES PCI-IDIO-16 GPIO support"
1449 select GPIOLIB_IRQCHIP
1450 help
1451 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1452 generated when any of the inputs change state (low to high or high to
1453 low). Input filter control is not supported by this driver, and the
1454 input filters are deactivated by this driver.
1455
1456config GPIO_PCIE_IDIO_24
1457 tristate "ACCES PCIe-IDIO-24 GPIO support"
1458 select GPIOLIB_IRQCHIP
1459 help
1460 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1461 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1462 when any of the inputs change state (low to high or high to low).
1463 Input filter control is not supported by this driver, and the input
1464 filters are deactivated by this driver.
1465
1466config GPIO_RDC321X
1467 tristate "RDC R-321x GPIO support"
1468 select MFD_CORE
1469 select MFD_RDC321X
1470 help
1471 Support for the RDC R321x SoC GPIOs over southbridge
1472 PCI configuration space.
1473
1474config GPIO_SODAVILLE
1475 bool "Intel Sodaville GPIO support"
1476 depends on X86 && OF
1477 select GPIO_GENERIC
1478 select GENERIC_IRQ_CHIP
1479 help
1480 Say Y here to support Intel Sodaville GPIO.
1481
1482endmenu
1483
1484menu "SPI GPIO expanders"
1485 depends on SPI_MASTER
1486
1487config GPIO_74X164
1488 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1489 depends on OF_GPIO
1490 help
1491 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1492 shift registers. This driver can be used to provide access
1493 to more gpio outputs.
1494
1495config GPIO_MAX3191X
1496 tristate "Maxim MAX3191x industrial serializer"
1497 select CRC8
1498 help
1499 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1500 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1501 chip to make 8 digital 24V inputs available via SPI. Supports
1502 CRC checksums to guard against electromagnetic interference,
1503 as well as undervoltage and overtemperature detection.
1504
1505config GPIO_MAX7301
1506 tristate "Maxim MAX7301 GPIO expander"
1507 select GPIO_MAX730X
1508 help
1509 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1510
1511config GPIO_MC33880
1512 tristate "Freescale MC33880 high-side/low-side switch"
1513 help
1514 SPI driver for Freescale MC33880 high-side/low-side switch.
1515 This provides GPIO interface supporting inputs and outputs.
1516
1517config GPIO_PISOSR
1518 tristate "Generic parallel-in/serial-out shift register"
1519 help
1520 GPIO driver for SPI compatible parallel-in/serial-out shift
1521 registers. These are input only devices.
1522
1523config GPIO_XRA1403
1524 tristate "EXAR XRA1403 16-bit GPIO expander"
1525 select REGMAP_SPI
1526 help
1527 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1528
1529config GPIO_MOXTET
1530 tristate "Turris Mox Moxtet bus GPIO expander"
1531 depends on MOXTET
1532 help
1533 Say yes here if you are building for the Turris Mox router.
1534 This is the driver needed for configuring the GPIOs via the Moxtet
1535 bus. For example the Mox module with SFP cage needs this driver
1536 so that phylink can use corresponding GPIOs.
1537
1538endmenu
1539
1540menu "USB GPIO expanders"
1541 depends on USB
1542
1543config GPIO_VIPERBOARD
1544 tristate "Viperboard GPIO a & b support"
1545 depends on MFD_VIPERBOARD
1546 help
1547 Say yes here to access the GPIO signals of Nano River
1548 Technologies Viperboard. There are two GPIO chips on the
1549 board: gpioa and gpiob.
1550 See viperboard API specification and Nano
1551 River Tech's viperboard.h for detailed meaning
1552 of the module parameters.
1553
1554endmenu
1555
1556config GPIO_AGGREGATOR
1557 tristate "GPIO Aggregator"
1558 help
1559 Say yes here to enable the GPIO Aggregator, which provides a way to
1560 aggregate existing GPIO lines into a new virtual GPIO chip.
1561 This can serve the following purposes:
1562 - Assign permissions for a collection of GPIO lines to a user,
1563 - Export a collection of GPIO lines to a virtual machine,
1564 - Provide a generic driver for a GPIO-operated device in an
1565 industrial control context, to be operated from userspace using
1566 the GPIO chardev interface.
1567
1568config GPIO_MOCKUP
1569 tristate "GPIO Testing Driver"
1570 select IRQ_SIM
1571 help
1572 This enables GPIO Testing driver, which provides a way to test GPIO
1573 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
1574 must be selected for this test.
1575 User could use it through the script in
1576 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1577 it.
1578
1579endif