xref: /linux/drivers/gpio/Kconfig (revision 79bb6460012c7c9f40aeb7b7d5f28aaac4455912)
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
33config GPIO_DEVRES
34	def_bool y
35	depends on HAS_IOMEM
36
37
38menuconfig GPIOLIB
39	bool "GPIO Support"
40	depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
41	help
42	  This enables GPIO support through the generic GPIO library.
43	  You only need to enable this, if you also want to enable
44	  one or more of the GPIO drivers below.
45
46	  If unsure, say N.
47
48if GPIOLIB
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 DEBUG_GPIO
59	bool "Debug GPIO calls"
60	depends on DEBUG_KERNEL
61	help
62	  Say Y here to add some extra checks and diagnostics to GPIO calls.
63	  These checks help ensure that GPIOs have been properly initialized
64	  before they are used, and that sleeping calls are not made from
65	  non-sleeping contexts.  They can make bitbanged serial protocols
66	  slower.  The diagnostics help catch the type of setup errors
67	  that are most common when setting up new platforms or boards.
68
69config GPIO_SYSFS
70	bool "/sys/class/gpio/... (sysfs interface)"
71	depends on SYSFS
72	help
73	  Say Y here to add a sysfs interface for GPIOs.
74
75	  This is mostly useful to work around omissions in a system's
76	  kernel support.  Those are common in custom and semicustom
77	  hardware assembled using standard kernels with a minimum of
78	  custom patches.  In those cases, userspace code may import
79	  a given GPIO from the kernel, if no kernel driver requested it.
80
81	  Kernel drivers may also request that a particular GPIO be
82	  exported to userspace; this can be useful when debugging.
83
84config GPIO_GENERIC
85	tristate
86
87# put drivers in the right section, in alphabetical order
88
89config GPIO_DA9052
90	tristate "Dialog DA9052 GPIO"
91	depends on PMIC_DA9052
92	help
93	  Say yes here to enable the GPIO driver for the DA9052 chip.
94
95config GPIO_DA9055
96	tristate "Dialog Semiconductor DA9055 GPIO"
97	depends on MFD_DA9055
98	help
99	  Say yes here to enable the GPIO driver for the DA9055 chip.
100
101	  The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
102	  be controller by this driver.
103
104	  If driver is built as a module it will be called gpio-da9055.
105
106config GPIO_MAX730X
107	tristate
108
109comment "Memory mapped GPIO drivers:"
110
111config GPIO_CLPS711X
112	tristate "CLPS711X GPIO support"
113	depends on ARCH_CLPS711X
114	select GPIO_GENERIC
115	help
116	  Say yes here to support GPIO on CLPS711X SoCs.
117
118config GPIO_GENERIC_PLATFORM
119	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
120	select GPIO_GENERIC
121	help
122	  Say yes here to support basic platform_device memory-mapped GPIO controllers.
123
124config GPIO_IT8761E
125	tristate "IT8761E GPIO support"
126	depends on X86  # unconditional access to IO space.
127	help
128	  Say yes here to support GPIO functionality of IT8761E super I/O chip.
129
130config GPIO_EM
131	tristate "Emma Mobile GPIO"
132	depends on ARM
133	help
134	  Say yes here to support GPIO on Renesas Emma Mobile SoCs.
135
136config GPIO_EP93XX
137	def_bool y
138	depends on ARCH_EP93XX
139	select GPIO_GENERIC
140
141config GPIO_MM_LANTIQ
142	bool "Lantiq Memory mapped GPIOs"
143	depends on LANTIQ && SOC_XWAY
144	help
145	  This enables support for memory mapped GPIOs on the External Bus Unit
146	  (EBU) found on Lantiq SoCs. The gpios are output only as they are
147	  created by attaching a 16bit latch to the bus.
148
149config GPIO_MPC5200
150	def_bool y
151	depends on PPC_MPC52xx
152
153config GPIO_MPC8XXX
154	bool "MPC512x/MPC8xxx GPIO support"
155	depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
156		   FSL_SOC_BOOKE || PPC_86xx
157	help
158	  Say Y here if you're going to use hardware that connects to the
159	  MPC512x/831x/834x/837x/8572/8610 GPIOs.
160
161config GPIO_MSM_V1
162	tristate "Qualcomm MSM GPIO v1"
163	depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
164	help
165	  Say yes here to support the GPIO interface on ARM v6 based
166	  Qualcomm MSM chips.  Most of the pins on the MSM can be
167	  selected for GPIO, and are controlled by this driver.
168
169config GPIO_MSM_V2
170	tristate "Qualcomm MSM GPIO v2"
171	depends on GPIOLIB && OF && ARCH_MSM
172	help
173	  Say yes here to support the GPIO interface on ARM v7 based
174	  Qualcomm MSM chips.  Most of the pins on the MSM can be
175	  selected for GPIO, and are controlled by this driver.
176
177config GPIO_MVEBU
178	def_bool y
179	depends on PLAT_ORION
180	depends on OF
181	select GPIO_GENERIC
182	select GENERIC_IRQ_CHIP
183
184config GPIO_MXC
185	def_bool y
186	depends on ARCH_MXC
187	select GPIO_GENERIC
188	select GENERIC_IRQ_CHIP
189
190config GPIO_MXS
191	def_bool y
192	depends on ARCH_MXS
193	select GPIO_GENERIC
194	select GENERIC_IRQ_CHIP
195
196config GPIO_PL061
197	bool "PrimeCell PL061 GPIO support"
198	depends on ARM && ARM_AMBA
199	select GENERIC_IRQ_CHIP
200	help
201	  Say yes here to support the PrimeCell PL061 GPIO device
202
203config GPIO_PXA
204	bool "PXA GPIO support"
205	depends on ARCH_PXA || ARCH_MMP
206	help
207	  Say yes here to support the PXA GPIO device
208
209config GPIO_RCAR
210	tristate "Renesas R-Car GPIO"
211	depends on ARM
212	help
213	  Say yes here to support GPIO on Renesas R-Car SoCs.
214
215config GPIO_SAMSUNG
216	bool
217	depends on PLAT_SAMSUNG
218	help
219	  Legacy GPIO support. Use only for platforms without support for
220	  pinctrl.
221
222config GPIO_SPEAR_SPICS
223	bool "ST SPEAr13xx SPI Chip Select as GPIO support"
224	depends on PLAT_SPEAR
225	select GENERIC_IRQ_CHIP
226	help
227	  Say yes here to support ST SPEAr SPI Chip Select as GPIO device
228
229config GPIO_STA2X11
230	bool "STA2x11/ConneXt GPIO support"
231	depends on MFD_STA2X11
232	select GENERIC_IRQ_CHIP
233	help
234	  Say yes here to support the STA2x11/ConneXt GPIO device.
235	  The GPIO module has 128 GPIO pins with alternate functions.
236
237config GPIO_TS5500
238	tristate "TS-5500 DIO blocks and compatibles"
239	help
240	  This driver supports Digital I/O exposed by pin blocks found on some
241	  Technologic Systems platforms. It includes, but is not limited to, 3
242	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
243	  LCD port.
244
245config GPIO_TZ1090
246	bool "Toumaz Xenif TZ1090 GPIO support"
247	depends on SOC_TZ1090
248	default y
249	help
250	  Say yes here to support Toumaz Xenif TZ1090 GPIOs.
251
252config GPIO_TZ1090_PDC
253	bool "Toumaz Xenif TZ1090 PDC GPIO support"
254	depends on SOC_TZ1090
255	default y
256	help
257	  Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
258
259config GPIO_XILINX
260	bool "Xilinx GPIO support"
261	depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
262	help
263	  Say yes here to support the Xilinx FPGA GPIO device
264
265config GPIO_VR41XX
266	tristate "NEC VR4100 series General-purpose I/O Uint support"
267	depends on CPU_VR41XX
268	help
269	  Say yes here to support the NEC VR4100 series General-purpose I/O Uint
270
271config GPIO_SCH
272	tristate "Intel SCH/TunnelCreek/Centerton GPIO"
273	depends on PCI && X86
274	select MFD_CORE
275	select LPC_SCH
276	help
277	  Say yes here to support GPIO interface on Intel Poulsbo SCH,
278	  Intel Tunnel Creek processor or Intel Centerton processor.
279	  The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
280	  powered by the core power rail and are turned off during sleep
281	  modes (S3 and higher). The remaining four GPIOs are powered by
282	  the Intel SCH suspend power supply. These GPIOs remain
283	  active during S3. The suspend powered GPIOs can be used to wake the
284	  system from the Suspend-to-RAM state.
285	  The Intel Tunnel Creek processor has 5 GPIOs powered by the
286	  core power rail and 9 from suspend power supply.
287	  The Intel Centerton processor has a total of 30 GPIO pins.
288	  Twenty-one are powered by the core power rail and 9 from the
289	  suspend power supply.
290
291config GPIO_ICH
292	tristate "Intel ICH GPIO"
293	depends on PCI && X86
294	select MFD_CORE
295	select LPC_ICH
296	help
297	  Say yes here to support the GPIO functionality of a number of Intel
298	  ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
299	  ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
300	  Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
301
302	  If unsure, say N.
303
304config GPIO_VX855
305	tristate "VIA VX855/VX875 GPIO"
306	depends on PCI && GENERIC_HARDIRQS
307	select MFD_CORE
308	select MFD_VX855
309	help
310	  Support access to the VX855/VX875 GPIO lines through the gpio library.
311
312	  This driver provides common support for accessing the device,
313	  additional drivers must be enabled in order to use the
314	  functionality of the device.
315
316config GPIO_GE_FPGA
317	bool "GE FPGA based GPIO"
318	depends on GE_FPGA
319	help
320	  Support for common GPIO functionality provided on some GE Single Board
321	  Computers.
322
323	  This driver provides basic support (configure as input or output, read
324	  and write pin state) for GPIO implemented in a number of GE single
325	  board computers.
326
327config GPIO_LYNXPOINT
328	bool "Intel Lynxpoint GPIO support"
329	depends on ACPI && X86
330	select IRQ_DOMAIN
331	help
332	  driver for GPIO functionality on Intel Lynxpoint PCH chipset
333	  Requires ACPI device enumeration code to set up a platform device.
334
335config GPIO_GRGPIO
336	tristate "Aeroflex Gaisler GRGPIO support"
337	depends on OF
338	select GPIO_GENERIC
339	select IRQ_DOMAIN
340	help
341	  Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
342	  VHDL IP core library.
343
344comment "I2C GPIO expanders:"
345
346config GPIO_ARIZONA
347	tristate "Wolfson Microelectronics Arizona class devices"
348	depends on MFD_ARIZONA
349	help
350	  Support for GPIOs on Wolfson Arizona class devices.
351
352config GPIO_MAX7300
353	tristate "Maxim MAX7300 GPIO expander"
354	depends on I2C
355	select GPIO_MAX730X
356	help
357	  GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
358
359config GPIO_MAX732X
360	tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
361	depends on I2C
362	help
363	  Say yes here to support the MAX7319, MAX7320-7327 series of I2C
364	  Port Expanders. Each IO port on these chips has a fixed role of
365	  Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
366	  Input and Output (designed by 'P'). The combinations are listed
367	  below:
368
369	  8 bits:	max7319 (8I), max7320 (8O), max7321 (8P),
370		  	max7322 (4I4O), max7323 (4P4O)
371
372	  16 bits:	max7324 (8I8O), max7325 (8P8O),
373		  	max7326 (4I12O), max7327 (4P12O)
374
375	  Board setup code must specify the model to use, and the start
376	  number for these GPIOs.
377
378config GPIO_MAX732X_IRQ
379	bool "Interrupt controller support for MAX732x"
380	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
381	help
382	  Say yes here to enable the max732x to be used as an interrupt
383	  controller. It requires the driver to be built in the kernel.
384
385config GPIO_MC9S08DZ60
386	bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
387	depends on I2C=y && MACH_MX35_3DS
388	help
389	  Select this to enable the MC9S08DZ60 GPIO driver
390
391config GPIO_PCA953X
392	tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
393	depends on I2C
394	help
395	  Say yes here to provide access to several register-oriented
396	  SMBus I/O expanders, made mostly by NXP or TI.  Compatible
397	  models include:
398
399	  4 bits:	pca9536, pca9537
400
401	  8 bits:	max7310, max7315, pca6107, pca9534, pca9538, pca9554,
402			pca9556, pca9557, pca9574, tca6408
403
404	  16 bits:	max7312, max7313, pca9535, pca9539, pca9555, pca9575,
405			tca6416
406
407config GPIO_PCA953X_IRQ
408	bool "Interrupt controller support for PCA953x"
409	depends on GPIO_PCA953X=y
410	help
411	  Say yes here to enable the pca953x to be used as an interrupt
412	  controller. It requires the driver to be built in the kernel.
413
414config GPIO_PCF857X
415	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
416	depends on I2C
417	select IRQ_DOMAIN
418	help
419	  Say yes here to provide access to most "quasi-bidirectional" I2C
420	  GPIO expanders used for additional digital outputs or inputs.
421	  Most of these parts are from NXP, though TI is a second source for
422	  some of them.  Compatible models include:
423
424	  8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
425	            pca9670, pca9672, pca9674, pca9674a,
426	  	    max7328, max7329
427
428	  16 bits:  pcf8575, pcf8575c, pca8575,
429	            pca9671, pca9673, pca9675
430
431	  Your board setup code will need to declare the expanders in
432	  use, and assign numbers to the GPIOs they expose.  Those GPIOs
433	  can then be used from drivers and other kernel code, just like
434	  other GPIOs, but only accessible from task contexts.
435
436	  This driver provides an in-kernel interface to those GPIOs using
437	  platform-neutral GPIO calls.
438
439config GPIO_RC5T583
440	bool "RICOH RC5T583 GPIO"
441	depends on MFD_RC5T583
442	help
443	  Select this option to enable GPIO driver for the Ricoh RC5T583
444	  chip family.
445	  This driver provides the support for driving/reading the gpio pins
446	  of RC5T583 device through standard gpio library.
447
448config GPIO_SX150X
449	bool "Semtech SX150x I2C GPIO expander"
450	depends on I2C=y
451	default n
452	help
453	  Say yes here to provide support for Semtech SX150-series I2C
454	  GPIO expanders. Compatible models include:
455
456	  8 bits:  sx1508q
457	  16 bits: sx1509q
458
459config GPIO_STMPE
460	bool "STMPE GPIOs"
461	depends on MFD_STMPE
462	help
463	  This enables support for the GPIOs found on the STMPE I/O
464	  Expanders.
465
466config GPIO_STP_XWAY
467	bool "XWAY STP GPIOs"
468	depends on SOC_XWAY
469	help
470	  This enables support for the Serial To Parallel (STP) unit found on
471	  XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
472	  that can be up to 24 bit. This peripheral is aimed at driving leds.
473	  Some of the gpios/leds can be auto updated by the soc with dsl and
474	  phy status.
475
476config GPIO_TC3589X
477	bool "TC3589X GPIOs"
478	depends on MFD_TC3589X
479	help
480	  This enables support for the GPIOs found on the TC3589X
481	  I/O Expander.
482
483config GPIO_TPS65912
484	tristate "TI TPS65912 GPIO"
485	depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
486	help
487	  This driver supports TPS65912 gpio chip
488
489config GPIO_TWL4030
490	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
491	depends on TWL4030_CORE
492	help
493	  Say yes here to access the GPIO signals of various multi-function
494	  power management chips from Texas Instruments.
495
496config GPIO_TWL6040
497	tristate "TWL6040 GPO"
498	depends on TWL6040_CORE
499	help
500	  Say yes here to access the GPO signals of twl6040
501	  audio chip from Texas Instruments.
502
503config GPIO_WM831X
504	tristate "WM831x GPIOs"
505	depends on MFD_WM831X
506	help
507	  Say yes here to access the GPIO signals of WM831x power management
508	  chips from Wolfson Microelectronics.
509
510config GPIO_WM8350
511	tristate "WM8350 GPIOs"
512	depends on MFD_WM8350
513	help
514	  Say yes here to access the GPIO signals of WM8350 power management
515	  chips from Wolfson Microelectronics.
516
517config GPIO_WM8994
518	tristate "WM8994 GPIOs"
519	depends on MFD_WM8994
520	help
521	  Say yes here to access the GPIO signals of WM8994 audio hub
522	  CODECs from Wolfson Microelectronics.
523
524config GPIO_ADP5520
525	tristate "GPIO Support for ADP5520 PMIC"
526	depends on PMIC_ADP5520
527	help
528	  This option enables support for on-chip GPIO found
529	  on Analog Devices ADP5520 PMICs.
530
531config GPIO_ADP5588
532	tristate "ADP5588 I2C GPIO expander"
533	depends on I2C
534	help
535	  This option enables support for 18 GPIOs found
536	  on Analog Devices ADP5588 GPIO Expanders.
537
538config GPIO_ADP5588_IRQ
539	bool "Interrupt controller support for ADP5588"
540	depends on GPIO_ADP5588=y
541	help
542	  Say yes here to enable the adp5588 to be used as an interrupt
543	  controller. It requires the driver to be built in the kernel.
544
545config GPIO_ADNP
546	tristate "Avionic Design N-bit GPIO expander"
547	depends on I2C && OF_GPIO
548	help
549	  This option enables support for N GPIOs found on Avionic Design
550	  I2C GPIO expanders. The register space will be extended by powers
551	  of two, so the controller will need to accommodate for that. For
552	  example: if a controller provides 48 pins, 6 registers will be
553	  enough to represent all pins, but the driver will assume a
554	  register layout for 64 pins (8 registers).
555
556comment "PCI GPIO expanders:"
557
558config GPIO_CS5535
559	tristate "AMD CS5535/CS5536 GPIO support"
560	depends on PCI && X86 && MFD_CS5535
561	help
562	  The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
563	  can be used for quite a number of things.  The CS5535/6 is found on
564	  AMD Geode and Lemote Yeeloong devices.
565
566	  If unsure, say N.
567
568config GPIO_BT8XX
569	tristate "BT8XX GPIO abuser"
570	depends on PCI && VIDEO_BT848=n
571	help
572	  The BT8xx frame grabber chip has 24 GPIO pins than can be abused
573	  as a cheap PCI GPIO card.
574
575	  This chip can be found on Miro, Hauppauge and STB TV-cards.
576
577	  The card needs to be physically altered for using it as a
578	  GPIO card. For more information on how to build a GPIO card
579	  from a BT8xx TV card, see the documentation file at
580	  Documentation/bt8xxgpio.txt
581
582	  If unsure, say N.
583
584config GPIO_AMD8111
585	tristate "AMD 8111 GPIO driver"
586	depends on PCI
587	help
588	  The AMD 8111 south bridge contains 32 GPIO pins which can be used.
589
590	  Note, that usually system firmware/ACPI handles GPIO pins on their
591	  own and users might easily break their systems with uncarefull usage
592	  of this driver!
593
594	  If unsure, say N
595
596config GPIO_LANGWELL
597	bool "Intel Langwell/Penwell GPIO support"
598	depends on PCI && X86
599	select IRQ_DOMAIN
600	help
601	  Say Y here to support Intel Langwell/Penwell GPIO.
602
603config GPIO_PCH
604	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
605	depends on PCI && X86
606	select GENERIC_IRQ_CHIP
607	help
608	  This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
609	  which is an IOH(Input/Output Hub) for x86 embedded processor.
610	  This driver can access PCH GPIO device.
611
612	  This driver also can be used for LAPIS Semiconductor IOH(Input/
613	  Output Hub), ML7223 and ML7831.
614	  ML7223 IOH is for MP(Media Phone) use.
615	  ML7831 IOH is for general purpose use.
616	  ML7223/ML7831 is companion chip for Intel Atom E6xx series.
617	  ML7223/ML7831 is completely compatible for Intel EG20T PCH.
618
619config GPIO_ML_IOH
620	tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
621	depends on PCI
622	select GENERIC_IRQ_CHIP
623	help
624	  ML7213 is companion chip for Intel Atom E6xx series.
625	  This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
626	  Hub) which is for IVI(In-Vehicle Infotainment) use.
627	  This driver can access the IOH's GPIO device.
628
629config GPIO_SODAVILLE
630	bool "Intel Sodaville GPIO support"
631	depends on X86 && PCI && OF
632	select GPIO_GENERIC
633	select GENERIC_IRQ_CHIP
634	help
635	  Say Y here to support Intel Sodaville GPIO.
636
637config GPIO_TIMBERDALE
638	bool "Support for timberdale GPIO IP"
639	depends on MFD_TIMBERDALE && HAS_IOMEM
640	---help---
641	Add support for the GPIO IP in the timberdale FPGA.
642
643config GPIO_RDC321X
644	tristate "RDC R-321x GPIO support"
645	depends on PCI && GENERIC_HARDIRQS
646	select MFD_CORE
647	select MFD_RDC321X
648	help
649	  Support for the RDC R321x SoC GPIOs over southbridge
650	  PCI configuration space.
651
652comment "SPI GPIO expanders:"
653
654config GPIO_MAX7301
655	tristate "Maxim MAX7301 GPIO expander"
656	depends on SPI_MASTER
657	select GPIO_MAX730X
658	help
659	  GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
660
661config GPIO_MCP23S08
662	tristate "Microchip MCP23xxx I/O expander"
663	depends on (SPI_MASTER && !I2C) || I2C
664	help
665	  SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
666	  I/O expanders.
667	  This provides a GPIO interface supporting inputs and outputs.
668
669config GPIO_MC33880
670	tristate "Freescale MC33880 high-side/low-side switch"
671	depends on SPI_MASTER
672	help
673	  SPI driver for Freescale MC33880 high-side/low-side switch.
674	  This provides GPIO interface supporting inputs and outputs.
675
676config GPIO_74X164
677	tristate "74x164 serial-in/parallel-out 8-bits shift register"
678	depends on SPI_MASTER
679	help
680	  Platform driver for 74x164 compatible serial-in/parallel-out
681	  8-outputs shift registers. This driver can be used to provide access
682	  to more gpio outputs.
683
684comment "AC97 GPIO expanders:"
685
686config GPIO_UCB1400
687	bool "Philips UCB1400 GPIO"
688	depends on UCB1400_CORE
689	help
690	  This enables support for the Philips UCB1400 GPIO pins.
691	  The UCB1400 is an AC97 audio codec.
692
693comment "MODULbus GPIO expanders:"
694
695config GPIO_JANZ_TTL
696	tristate "Janz VMOD-TTL Digital IO Module"
697	depends on MFD_JANZ_CMODIO
698	help
699	  This enables support for the Janz VMOD-TTL Digital IO module.
700	  This driver provides support for driving the pins in output
701	  mode only. Input mode is not supported.
702
703config GPIO_PALMAS
704	bool "TI PALMAS series PMICs GPIO"
705	depends on MFD_PALMAS
706	help
707	  Select this option to enable GPIO driver for the TI PALMAS
708	  series chip family.
709
710config GPIO_TPS6586X
711	bool "TPS6586X GPIO"
712	depends on MFD_TPS6586X
713	help
714	  Select this option to enable GPIO driver for the TPS6586X
715	  chip family.
716
717config GPIO_TPS65910
718	bool "TPS65910 GPIO"
719	depends on MFD_TPS65910
720	help
721	  Select this option to enable GPIO driver for the TPS65910
722	  chip family.
723
724config GPIO_MSIC
725	bool "Intel MSIC mixed signal gpio support"
726	depends on MFD_INTEL_MSIC
727	help
728	  Enable support for GPIO on intel MSIC controllers found in
729	  intel MID devices
730
731comment "USB GPIO expanders:"
732
733config GPIO_VIPERBOARD
734	tristate "Viperboard GPIO a & b support"
735	depends on MFD_VIPERBOARD && USB
736	help
737	  Say yes here to access the GPIO signals of Nano River
738	  Technologies Viperboard. There are two GPIO chips on the
739	  board: gpioa and gpiob.
740          See viperboard API specification and Nano
741          River Tech's viperboard.h for detailed meaning
742          of the module parameters.
743
744endif
745