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Linux/drivers/gpio/Kconfig

  1 #
  2 # GPIO infrastructure and drivers
  3 #
  4 
  5 config 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 
 13 config 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 
 23 config 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 
 34 menuconfig 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 
 44 if GPIOLIB
 45 
 46 config GPIO_DEVRES
 47         def_bool y
 48         depends on HAS_IOMEM
 49 
 50 config OF_GPIO
 51         def_bool y
 52         depends on OF
 53 
 54 config GPIO_ACPI
 55         def_bool y
 56         depends on ACPI
 57 
 58 config GPIOLIB_IRQCHIP
 59         select IRQ_DOMAIN
 60         bool
 61 
 62 config DEBUG_GPIO
 63         bool "Debug GPIO calls"
 64         depends on DEBUG_KERNEL
 65         help
 66           Say Y here to add some extra checks and diagnostics to GPIO calls.
 67           These checks help ensure that GPIOs have been properly initialized
 68           before they are used, and that sleeping calls are not made from
 69           non-sleeping contexts.  They can make bitbanged serial protocols
 70           slower.  The diagnostics help catch the type of setup errors
 71           that are most common when setting up new platforms or boards.
 72 
 73 config GPIO_SYSFS
 74         bool "/sys/class/gpio/... (sysfs interface)"
 75         depends on SYSFS
 76         help
 77           Say Y here to add a sysfs interface for GPIOs.
 78 
 79           This is mostly useful to work around omissions in a system's
 80           kernel support.  Those are common in custom and semicustom
 81           hardware assembled using standard kernels with a minimum of
 82           custom patches.  In those cases, userspace code may import
 83           a given GPIO from the kernel, if no kernel driver requested it.
 84 
 85           Kernel drivers may also request that a particular GPIO be
 86           exported to userspace; this can be useful when debugging.
 87 
 88 config GPIO_GENERIC
 89         tristate
 90 
 91 # put drivers in the right section, in alphabetical order
 92 
 93 # This symbol is selected by both I2C and SPI expanders
 94 config GPIO_MAX730X
 95         tristate
 96 
 97 menu "Memory mapped GPIO drivers"
 98 
 99 config GPIO_74XX_MMIO
100         tristate "GPIO driver for 74xx-ICs with MMIO access"
101         depends on OF_GPIO
102         select GPIO_GENERIC
103         help
104           Say yes here to support GPIO functionality for 74xx-compatible ICs
105           with MMIO access. Compatible models include:
106             1 bit:      741G125 (Input), 741G74 (Output)
107             2 bits:     742G125 (Input), 7474 (Output)
108             4 bits:     74125 (Input), 74175 (Output)
109             6 bits:     74365 (Input), 74174 (Output)
110             8 bits:     74244 (Input), 74273 (Output)
111             16 bits:    741624 (Input), 7416374 (Output)
112 
113 config GPIO_ALTERA
114         tristate "Altera GPIO"
115         depends on OF_GPIO
116         select GPIO_GENERIC
117         select GPIOLIB_IRQCHIP
118         help
119           Say Y or M here to build support for the Altera PIO device.
120 
121           If driver is built as a module it will be called gpio-altera.
122 
123 config GPIO_BCM_KONA
124         bool "Broadcom Kona GPIO"
125         depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
126         help
127           Turn on GPIO support for Broadcom "Kona" chips.
128 
129 config GPIO_BRCMSTB
130         tristate "BRCMSTB GPIO support"
131         default y if ARCH_BRCMSTB
132         depends on OF_GPIO && (ARCH_BRCMSTB || COMPILE_TEST)
133         select GPIO_GENERIC
134         help
135           Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
136 
137 config GPIO_CLPS711X
138         tristate "CLPS711X GPIO support"
139         depends on ARCH_CLPS711X || COMPILE_TEST
140         select GPIO_GENERIC
141         help
142           Say yes here to support GPIO on CLPS711X SoCs.
143 
144 config GPIO_DAVINCI
145         bool "TI Davinci/Keystone GPIO support"
146         default y if ARCH_DAVINCI
147         depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
148         help
149           Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
150 
151 config GPIO_DWAPB
152         tristate "Synopsys DesignWare APB GPIO driver"
153         select GPIO_GENERIC
154         select GENERIC_IRQ_CHIP
155         help
156           Say Y or M here to build support for the Synopsys DesignWare APB
157           GPIO block.
158 
159 config GPIO_EM
160         tristate "Emma Mobile GPIO"
161         depends on ARM && OF_GPIO
162         help
163           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
164 
165 config GPIO_EP93XX
166         def_bool y
167         depends on ARCH_EP93XX
168         select GPIO_GENERIC
169 
170 config GPIO_ETRAXFS
171         bool "Axis ETRAX FS General I/O"
172         depends on CRIS || COMPILE_TEST
173         depends on OF
174         select GPIO_GENERIC
175         help
176           Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
177 
178 config GPIO_F7188X
179         tristate "F71869, F71869A, F71882FG and F71889F GPIO support"
180         depends on X86
181         help
182           This option enables support for GPIOs found on Fintek Super-I/O
183           chips F71869, F71869A, F71882FG and F71889F.
184 
185           To compile this driver as a module, choose M here: the module will
186           be called f7188x-gpio.
187 
188 config GPIO_GE_FPGA
189         bool "GE FPGA based GPIO"
190         depends on GE_FPGA
191         select GPIO_GENERIC
192         help
193           Support for common GPIO functionality provided on some GE Single Board
194           Computers.
195 
196           This driver provides basic support (configure as input or output, read
197           and write pin state) for GPIO implemented in a number of GE single
198           board computers.
199 
200 config GPIO_GENERIC_PLATFORM
201         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
202         select GPIO_GENERIC
203         help
204           Say yes here to support basic platform_device memory-mapped GPIO controllers.
205 
206 config GPIO_GRGPIO
207         tristate "Aeroflex Gaisler GRGPIO support"
208         depends on OF
209         select GPIO_GENERIC
210         select IRQ_DOMAIN
211         help
212           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
213           VHDL IP core library.
214 
215 config GPIO_ICH
216         tristate "Intel ICH GPIO"
217         depends on PCI && X86
218         select MFD_CORE
219         select LPC_ICH
220         help
221           Say yes here to support the GPIO functionality of a number of Intel
222           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
223           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
224           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
225 
226           If unsure, say N.
227 
228 config GPIO_IOP
229         tristate "Intel IOP GPIO"
230         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
231         help
232           Say yes here to support the GPIO functionality of a number of Intel
233           IOP32X or IOP33X.
234 
235           If unsure, say N.
236 
237 config GPIO_IT8761E
238         tristate "IT8761E GPIO support"
239         depends on X86  # unconditional access to IO space.
240         help
241           Say yes here to support GPIO functionality of IT8761E super I/O chip.
242 
243 config GPIO_LOONGSON
244         bool "Loongson-2/3 GPIO support"
245         depends on CPU_LOONGSON2 || CPU_LOONGSON3
246         help
247           driver for GPIO functionality on Loongson-2F/3A/3B processors.
248 
249 config GPIO_LPC18XX
250         bool "NXP LPC18XX/43XX GPIO support"
251         default y if ARCH_LPC18XX
252         depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
253         help
254           Select this option to enable GPIO driver for
255           NXP LPC18XX/43XX devices.
256 
257 config GPIO_LYNXPOINT
258         tristate "Intel Lynxpoint GPIO support"
259         depends on ACPI && X86
260         select GPIOLIB_IRQCHIP
261         help
262           driver for GPIO functionality on Intel Lynxpoint PCH chipset
263           Requires ACPI device enumeration code to set up a platform device.
264 
265 config GPIO_MB86S7X
266         bool "GPIO support for Fujitsu MB86S7x Platforms"
267         depends on ARCH_MB86S7X
268         help
269           Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
270 
271 config GPIO_MM_LANTIQ
272         bool "Lantiq Memory mapped GPIOs"
273         depends on LANTIQ && SOC_XWAY
274         help
275           This enables support for memory mapped GPIOs on the External Bus Unit
276           (EBU) found on Lantiq SoCs. The gpios are output only as they are
277           created by attaching a 16bit latch to the bus.
278 
279 config GPIO_MOXART
280         bool "MOXART GPIO support"
281         depends on ARCH_MOXART
282         select GPIO_GENERIC
283         help
284           Select this option to enable GPIO driver for
285           MOXA ART SoC devices.
286 
287 config GPIO_MPC5200
288         def_bool y
289         depends on PPC_MPC52xx
290 
291 config GPIO_MPC8XXX
292         bool "MPC512x/MPC8xxx GPIO support"
293         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
294                    FSL_SOC_BOOKE || PPC_86xx
295         help
296           Say Y here if you're going to use hardware that connects to the
297           MPC512x/831x/834x/837x/8572/8610 GPIOs.
298 
299 config GPIO_MSM_V2
300         tristate "Qualcomm MSM GPIO v2"
301         depends on GPIOLIB && OF && ARCH_QCOM
302         help
303           Say yes here to support the GPIO interface on ARM v7 based
304           Qualcomm MSM chips.  Most of the pins on the MSM can be
305           selected for GPIO, and are controlled by this driver.
306 
307 config GPIO_MVEBU
308         def_bool y
309         depends on PLAT_ORION
310         depends on OF
311         select GPIO_GENERIC
312         select GENERIC_IRQ_CHIP
313 
314 config GPIO_MXC
315         def_bool y
316         depends on ARCH_MXC
317         select GPIO_GENERIC
318         select GENERIC_IRQ_CHIP
319 
320 config GPIO_MXS
321         def_bool y
322         depends on ARCH_MXS
323         select GPIO_GENERIC
324         select GENERIC_IRQ_CHIP
325 
326 config GPIO_OCTEON
327         tristate "Cavium OCTEON GPIO"
328         depends on GPIOLIB && CAVIUM_OCTEON_SOC
329         default y
330         help
331           Say yes here to support the on-chip GPIO lines on the OCTEON
332           family of SOCs.
333 
334 config GPIO_OMAP
335         tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
336         default y if ARCH_OMAP
337         depends on ARM
338         select GENERIC_IRQ_CHIP
339         select GPIOLIB_IRQCHIP
340         help
341           Say yes here to enable GPIO support for TI OMAP SoCs.
342 
343 config GPIO_PL061
344         bool "PrimeCell PL061 GPIO support"
345         depends on ARM_AMBA
346         select IRQ_DOMAIN
347         select GPIOLIB_IRQCHIP
348         help
349           Say yes here to support the PrimeCell PL061 GPIO device
350 
351 config GPIO_PXA
352         bool "PXA GPIO support"
353         depends on ARCH_PXA || ARCH_MMP
354         help
355           Say yes here to support the PXA GPIO device
356 
357 config GPIO_RCAR
358         tristate "Renesas R-Car GPIO"
359         depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
360         select GPIOLIB_IRQCHIP
361         help
362           Say yes here to support GPIO on Renesas R-Car SoCs.
363 
364 config GPIO_SAMSUNG
365         bool
366         depends on PLAT_SAMSUNG
367         help
368           Legacy GPIO support. Use only for platforms without support for
369           pinctrl.
370 
371 config GPIO_SCH
372         tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
373         depends on PCI && X86
374         select MFD_CORE
375         select LPC_SCH
376         help
377           Say yes here to support GPIO interface on Intel Poulsbo SCH,
378           Intel Tunnel Creek processor, Intel Centerton processor or
379           Intel Quark X1000 SoC.
380 
381           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
382           powered by the core power rail and are turned off during sleep
383           modes (S3 and higher). The remaining four GPIOs are powered by
384           the Intel SCH suspend power supply. These GPIOs remain
385           active during S3. The suspend powered GPIOs can be used to wake the
386           system from the Suspend-to-RAM state.
387 
388           The Intel Tunnel Creek processor has 5 GPIOs powered by the
389           core power rail and 9 from suspend power supply.
390 
391           The Intel Centerton processor has a total of 30 GPIO pins.
392           Twenty-one are powered by the core power rail and 9 from the
393           suspend power supply.
394 
395           The Intel Quark X1000 SoC has 2 GPIOs powered by the core
396           power well and 6 from the suspend power well.
397 
398 config GPIO_SCH311X
399         tristate "SMSC SCH311x SuperI/O GPIO"
400         help
401           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
402           SCH3116 "Super I/O" chipsets.
403 
404           To compile this driver as a module, choose M here: the module will
405           be called gpio-sch311x.
406 
407 config GPIO_SPEAR_SPICS
408         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
409         depends on PLAT_SPEAR
410         select GENERIC_IRQ_CHIP
411         help
412           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
413 
414 config GPIO_STA2X11
415         bool "STA2x11/ConneXt GPIO support"
416         depends on MFD_STA2X11
417         select GENERIC_IRQ_CHIP
418         help
419           Say yes here to support the STA2x11/ConneXt GPIO device.
420           The GPIO module has 128 GPIO pins with alternate functions.
421 
422 config GPIO_STP_XWAY
423         bool "XWAY STP GPIOs"
424         depends on SOC_XWAY
425         help
426           This enables support for the Serial To Parallel (STP) unit found on
427           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
428           that can be up to 24 bit. This peripheral is aimed at driving leds.
429           Some of the gpios/leds can be auto updated by the soc with dsl and
430           phy status.
431 
432 config GPIO_SYSCON
433         tristate "GPIO based on SYSCON"
434         depends on MFD_SYSCON && OF
435         help
436           Say yes here to support GPIO functionality though SYSCON driver.
437 
438 config GPIO_TB10X
439         bool
440         select GENERIC_IRQ_CHIP
441         select OF_GPIO
442 
443 config GPIO_TS5500
444         tristate "TS-5500 DIO blocks and compatibles"
445         depends on TS5500 || COMPILE_TEST
446         help
447           This driver supports Digital I/O exposed by pin blocks found on some
448           Technologic Systems platforms. It includes, but is not limited to, 3
449           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
450           LCD port.
451 
452 config GPIO_TZ1090
453         bool "Toumaz Xenif TZ1090 GPIO support"
454         depends on SOC_TZ1090
455         select GENERIC_IRQ_CHIP
456         default y
457         help
458           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
459 
460 config GPIO_TZ1090_PDC
461         bool "Toumaz Xenif TZ1090 PDC GPIO support"
462         depends on SOC_TZ1090
463         default y
464         help
465           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
466 
467 config GPIO_VF610
468         def_bool y
469         depends on ARCH_MXC && SOC_VF610
470         select GPIOLIB_IRQCHIP
471         help
472           Say yes here to support Vybrid vf610 GPIOs.
473 
474 config GPIO_VR41XX
475         tristate "NEC VR4100 series General-purpose I/O Uint support"
476         depends on CPU_VR41XX
477         help
478           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
479 
480 config GPIO_VX855
481         tristate "VIA VX855/VX875 GPIO"
482         depends on PCI
483         select MFD_CORE
484         select MFD_VX855
485         help
486           Support access to the VX855/VX875 GPIO lines through the gpio library.
487 
488           This driver provides common support for accessing the device,
489           additional drivers must be enabled in order to use the
490           functionality of the device.
491 
492 config GPIO_XGENE
493         bool "APM X-Gene GPIO controller support"
494         depends on ARM64 && OF_GPIO
495         help
496           This driver is to support the GPIO block within the APM X-Gene SoC
497           platform's generic flash controller. The GPIO pins are muxed with
498           the generic flash controller's address and data pins. Say yes
499           here to enable the GFC GPIO functionality.
500 
501 config GPIO_XGENE_SB
502         tristate "APM X-Gene GPIO standby controller support"
503         depends on ARCH_XGENE && OF_GPIO
504         select GPIO_GENERIC
505         help
506           This driver supports the GPIO block within the APM X-Gene
507           Standby Domain. Say yes here to enable the GPIO functionality.
508 
509 config GPIO_XILINX
510         tristate "Xilinx GPIO support"
511         depends on OF_GPIO && (PPC || MICROBLAZE || ARCH_ZYNQ || X86)
512         help
513           Say yes here to support the Xilinx FPGA GPIO device
514 
515 config GPIO_XLP
516         tristate "Netlogic XLP GPIO support"
517         depends on CPU_XLP
518         select GPIOLIB_IRQCHIP
519         help
520           This driver provides support for GPIO interface on Netlogic XLP MIPS64
521           SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
522           XLP9XX and XLP5XX.
523 
524           If unsure, say N.
525 
526 config GPIO_XTENSA
527         bool "Xtensa GPIO32 support"
528         depends on XTENSA
529         depends on HAVE_XTENSA_GPIO32
530         depends on !SMP
531         help
532           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
533           and EXPSTATE (output) ports
534 
535 config GPIO_ZEVIO
536         bool "LSI ZEVIO SoC memory mapped GPIOs"
537         depends on ARM && OF_GPIO
538         help
539           Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
540 
541 config GPIO_ZYNQ
542         tristate "Xilinx Zynq GPIO support"
543         depends on ARCH_ZYNQ || ARCH_ZYNQMP
544         select GPIOLIB_IRQCHIP
545         help
546           Say yes here to support Xilinx Zynq GPIO controller.
547 
548 endmenu
549 
550 menu "I2C GPIO expanders"
551         depends on I2C
552 
553 config GPIO_ADP5588
554         tristate "ADP5588 I2C GPIO expander"
555         depends on I2C
556         help
557           This option enables support for 18 GPIOs found
558           on Analog Devices ADP5588 GPIO Expanders.
559 
560 config GPIO_ADP5588_IRQ
561         bool "Interrupt controller support for ADP5588"
562         depends on GPIO_ADP5588=y
563         help
564           Say yes here to enable the adp5588 to be used as an interrupt
565           controller. It requires the driver to be built in the kernel.
566 
567 config GPIO_ADNP
568         tristate "Avionic Design N-bit GPIO expander"
569         depends on I2C && OF_GPIO
570         select GPIOLIB_IRQCHIP
571         help
572           This option enables support for N GPIOs found on Avionic Design
573           I2C GPIO expanders. The register space will be extended by powers
574           of two, so the controller will need to accommodate for that. For
575           example: if a controller provides 48 pins, 6 registers will be
576           enough to represent all pins, but the driver will assume a
577           register layout for 64 pins (8 registers).
578 
579 config GPIO_MAX7300
580         tristate "Maxim MAX7300 GPIO expander"
581         depends on I2C
582         select GPIO_MAX730X
583         help
584           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
585 
586 config GPIO_MAX732X
587         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
588         depends on I2C
589         help
590           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
591           Port Expanders. Each IO port on these chips has a fixed role of
592           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
593           Input and Output (designed by 'P'). The combinations are listed
594           below:
595 
596           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
597                         max7322 (4I4O), max7323 (4P4O)
598 
599           16 bits:      max7324 (8I8O), max7325 (8P8O),
600                         max7326 (4I12O), max7327 (4P12O)
601 
602           Board setup code must specify the model to use, and the start
603           number for these GPIOs.
604 
605 config GPIO_MAX732X_IRQ
606         bool "Interrupt controller support for MAX732x"
607         depends on GPIO_MAX732X=y
608         select GPIOLIB_IRQCHIP
609         help
610           Say yes here to enable the max732x to be used as an interrupt
611           controller. It requires the driver to be built in the kernel.
612 
613 config GPIO_MC9S08DZ60
614         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
615         depends on I2C=y && MACH_MX35_3DS
616         help
617           Select this to enable the MC9S08DZ60 GPIO driver
618 
619 config GPIO_PCA953X
620         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
621         depends on I2C
622         help
623           Say yes here to provide access to several register-oriented
624           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
625           models include:
626 
627           4 bits:       pca9536, pca9537
628 
629           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
630                         pca9556, pca9557, pca9574, tca6408, xra1202
631 
632           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
633                         tca6416
634 
635           24 bits:      tca6424
636 
637           40 bits:      pca9505, pca9698
638 
639 config GPIO_PCA953X_IRQ
640         bool "Interrupt controller support for PCA953x"
641         depends on GPIO_PCA953X=y
642         select GPIOLIB_IRQCHIP
643         help
644           Say yes here to enable the pca953x to be used as an interrupt
645           controller. It requires the driver to be built in the kernel.
646 
647 config GPIO_PCF857X
648         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
649         depends on I2C
650         select GPIOLIB_IRQCHIP
651         select IRQ_DOMAIN
652         help
653           Say yes here to provide access to most "quasi-bidirectional" I2C
654           GPIO expanders used for additional digital outputs or inputs.
655           Most of these parts are from NXP, though TI is a second source for
656           some of them.  Compatible models include:
657 
658           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
659                     pca9670, pca9672, pca9674, pca9674a,
660                     max7328, max7329
661 
662           16 bits:  pcf8575, pcf8575c, pca8575,
663                     pca9671, pca9673, pca9675
664 
665           Your board setup code will need to declare the expanders in
666           use, and assign numbers to the GPIOs they expose.  Those GPIOs
667           can then be used from drivers and other kernel code, just like
668           other GPIOs, but only accessible from task contexts.
669 
670           This driver provides an in-kernel interface to those GPIOs using
671           platform-neutral GPIO calls.
672 
673 config GPIO_SX150X
674         bool "Semtech SX150x I2C GPIO expander"
675         depends on I2C=y
676         select GPIOLIB_IRQCHIP
677         default n
678         help
679           Say yes here to provide support for Semtech SX150-series I2C
680           GPIO expanders. Compatible models include:
681 
682           8 bits:  sx1508q
683           16 bits: sx1509q
684 
685 endmenu
686 
687 menu "MFD GPIO expanders"
688 
689 config GPIO_ADP5520
690         tristate "GPIO Support for ADP5520 PMIC"
691         depends on PMIC_ADP5520
692         help
693           This option enables support for on-chip GPIO found
694           on Analog Devices ADP5520 PMICs.
695 
696 config GPIO_ARIZONA
697         tristate "Wolfson Microelectronics Arizona class devices"
698         depends on MFD_ARIZONA
699         help
700           Support for GPIOs on Wolfson Arizona class devices.
701 
702 config GPIO_CRYSTAL_COVE
703         tristate "GPIO support for Crystal Cove PMIC"
704         depends on INTEL_SOC_PMIC
705         select GPIOLIB_IRQCHIP
706         help
707           Support for GPIO pins on Crystal Cove PMIC.
708 
709           Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
710           inside.
711 
712           This driver can also be built as a module. If so, the module will be
713           called gpio-crystalcove.
714 
715 config GPIO_CS5535
716         tristate "AMD CS5535/CS5536 GPIO support"
717         depends on MFD_CS5535
718         help
719           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
720           can be used for quite a number of things.  The CS5535/6 is found on
721           AMD Geode and Lemote Yeeloong devices.
722 
723           If unsure, say N.
724 
725 config GPIO_DA9052
726         tristate "Dialog DA9052 GPIO"
727         depends on PMIC_DA9052
728         help
729           Say yes here to enable the GPIO driver for the DA9052 chip.
730 
731 config GPIO_DA9055
732         tristate "Dialog Semiconductor DA9055 GPIO"
733         depends on MFD_DA9055
734         help
735           Say yes here to enable the GPIO driver for the DA9055 chip.
736 
737           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
738           be controller by this driver.
739 
740           If driver is built as a module it will be called gpio-da9055.
741 
742 config GPIO_DLN2
743         tristate "Diolan DLN2 GPIO support"
744         depends on MFD_DLN2
745         select GPIOLIB_IRQCHIP
746 
747         help
748           Select this option to enable GPIO driver for the Diolan DLN2
749           board.
750 
751           This driver can also be built as a module. If so, the module
752           will be called gpio-dln2.
753 
754 config GPIO_JANZ_TTL
755         tristate "Janz VMOD-TTL Digital IO Module"
756         depends on MFD_JANZ_CMODIO
757         help
758           This enables support for the Janz VMOD-TTL Digital IO module.
759           This driver provides support for driving the pins in output
760           mode only. Input mode is not supported.
761 
762 config GPIO_KEMPLD
763         tristate "Kontron ETX / COMexpress GPIO"
764         depends on MFD_KEMPLD
765         help
766           This enables support for the PLD GPIO interface on some Kontron ETX
767           and COMexpress (ETXexpress) modules.
768 
769           This driver can also be built as a module. If so, the module will be
770           called gpio-kempld.
771 
772 config GPIO_LP3943
773         tristate "TI/National Semiconductor LP3943 GPIO expander"
774         depends on MFD_LP3943
775         help
776           GPIO driver for LP3943 MFD.
777           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
778           Open drain outputs are required for this usage.
779 
780 config GPIO_MSIC
781         bool "Intel MSIC mixed signal gpio support"
782         depends on MFD_INTEL_MSIC
783         help
784           Enable support for GPIO on intel MSIC controllers found in
785           intel MID devices
786 
787 config GPIO_PALMAS
788         bool "TI PALMAS series PMICs GPIO"
789         depends on MFD_PALMAS
790         help
791           Select this option to enable GPIO driver for the TI PALMAS
792           series chip family.
793 
794 config GPIO_RC5T583
795         bool "RICOH RC5T583 GPIO"
796         depends on MFD_RC5T583
797         help
798           Select this option to enable GPIO driver for the Ricoh RC5T583
799           chip family.
800           This driver provides the support for driving/reading the gpio pins
801           of RC5T583 device through standard gpio library.
802 
803 config GPIO_STMPE
804         bool "STMPE GPIOs"
805         depends on MFD_STMPE
806         depends on OF_GPIO
807         select GPIOLIB_IRQCHIP
808         help
809           This enables support for the GPIOs found on the STMPE I/O
810           Expanders.
811 
812 config GPIO_TC3589X
813         bool "TC3589X GPIOs"
814         depends on MFD_TC3589X
815         depends on OF_GPIO
816         select GPIOLIB_IRQCHIP
817         help
818           This enables support for the GPIOs found on the TC3589X
819           I/O Expander.
820 
821 config GPIO_TIMBERDALE
822         bool "Support for timberdale GPIO IP"
823         depends on MFD_TIMBERDALE
824         ---help---
825         Add support for the GPIO IP in the timberdale FPGA.
826 
827 config 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 
834 config 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 
841 config GPIO_TPS65912
842         tristate "TI TPS65912 GPIO"
843         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
844         help
845           This driver supports TPS65912 gpio chip
846 
847 config GPIO_TWL4030
848         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
849         depends on TWL4030_CORE
850         help
851           Say yes here to access the GPIO signals of various multi-function
852           power management chips from Texas Instruments.
853 
854 config GPIO_TWL6040
855         tristate "TWL6040 GPO"
856         depends on TWL6040_CORE
857         help
858           Say yes here to access the GPO signals of twl6040
859           audio chip from Texas Instruments.
860 
861 config GPIO_UCB1400
862         tristate "Philips UCB1400 GPIO"
863         depends on UCB1400_CORE
864         help
865           This enables support for the Philips UCB1400 GPIO pins.
866           The UCB1400 is an AC97 audio codec.
867 
868 config GPIO_WM831X
869         tristate "WM831x GPIOs"
870         depends on MFD_WM831X
871         help
872           Say yes here to access the GPIO signals of WM831x power management
873           chips from Wolfson Microelectronics.
874 
875 config GPIO_WM8350
876         tristate "WM8350 GPIOs"
877         depends on MFD_WM8350
878         help
879           Say yes here to access the GPIO signals of WM8350 power management
880           chips from Wolfson Microelectronics.
881 
882 config GPIO_WM8994
883         tristate "WM8994 GPIOs"
884         depends on MFD_WM8994
885         help
886           Say yes here to access the GPIO signals of WM8994 audio hub
887           CODECs from Wolfson Microelectronics.
888 
889 endmenu
890 
891 menu "PCI GPIO expanders"
892         depends on PCI
893 
894 config GPIO_AMD8111
895         tristate "AMD 8111 GPIO driver"
896         depends on PCI
897         help
898           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
899 
900           Note, that usually system firmware/ACPI handles GPIO pins on their
901           own and users might easily break their systems with uncarefull usage
902           of this driver!
903 
904           If unsure, say N
905 
906 config GPIO_BT8XX
907         tristate "BT8XX GPIO abuser"
908         depends on PCI && VIDEO_BT848=n
909         help
910           The BT8xx frame grabber chip has 24 GPIO pins that can be abused
911           as a cheap PCI GPIO card.
912 
913           This chip can be found on Miro, Hauppauge and STB TV-cards.
914 
915           The card needs to be physically altered for using it as a
916           GPIO card. For more information on how to build a GPIO card
917           from a BT8xx TV card, see the documentation file at
918           Documentation/bt8xxgpio.txt
919 
920           If unsure, say N.
921 
922 config GPIO_INTEL_MID
923         bool "Intel Mid GPIO support"
924         depends on PCI && X86
925         select GPIOLIB_IRQCHIP
926         help
927           Say Y here to support Intel Mid GPIO.
928 
929 config GPIO_ML_IOH
930         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
931         depends on PCI
932         select GENERIC_IRQ_CHIP
933         help
934           ML7213 is companion chip for Intel Atom E6xx series.
935           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
936           Hub) which is for IVI(In-Vehicle Infotainment) use.
937           This driver can access the IOH's GPIO device.
938 
939 config GPIO_PCH
940         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
941         depends on PCI && (X86_32 || COMPILE_TEST)
942         select GENERIC_IRQ_CHIP
943         help
944           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
945           which is an IOH(Input/Output Hub) for x86 embedded processor.
946           This driver can access PCH GPIO device.
947 
948           This driver also can be used for LAPIS Semiconductor IOH(Input/
949           Output Hub), ML7223 and ML7831.
950           ML7223 IOH is for MP(Media Phone) use.
951           ML7831 IOH is for general purpose use.
952           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
953           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
954 
955 config GPIO_RDC321X
956         tristate "RDC R-321x GPIO support"
957         depends on PCI
958         select MFD_CORE
959         select MFD_RDC321X
960         help
961           Support for the RDC R321x SoC GPIOs over southbridge
962           PCI configuration space.
963 
964 config GPIO_SODAVILLE
965         bool "Intel Sodaville GPIO support"
966         depends on X86 && PCI && OF
967         select GPIO_GENERIC
968         select GENERIC_IRQ_CHIP
969         help
970           Say Y here to support Intel Sodaville GPIO.
971 
972 endmenu
973 
974 menu "SPI GPIO expanders"
975         depends on SPI_MASTER
976 
977 config GPIO_74X164
978         tristate "74x164 serial-in/parallel-out 8-bits shift register"
979         depends on SPI_MASTER && OF
980         help
981           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
982           shift registers. This driver can be used to provide access
983           to more gpio outputs.
984 
985 config GPIO_MAX7301
986         tristate "Maxim MAX7301 GPIO expander"
987         depends on SPI_MASTER
988         select GPIO_MAX730X
989         help
990           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
991 
992 config GPIO_MCP23S08
993         tristate "Microchip MCP23xxx I/O expander"
994         depends on (SPI_MASTER && !I2C) || I2C
995         help
996           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
997           I/O expanders.
998           This provides a GPIO interface supporting inputs and outputs.
999           The I2C versions of the chips can be used as interrupt-controller.
1000 
1001 config GPIO_MC33880
1002         tristate "Freescale MC33880 high-side/low-side switch"
1003         depends on SPI_MASTER
1004         help
1005           SPI driver for Freescale MC33880 high-side/low-side switch.
1006           This provides GPIO interface supporting inputs and outputs.
1007 
1008 endmenu
1009 
1010 menu "USB GPIO expanders"
1011         depends on USB
1012 
1013 config GPIO_VIPERBOARD
1014         tristate "Viperboard GPIO a & b support"
1015         depends on MFD_VIPERBOARD && USB
1016         help
1017           Say yes here to access the GPIO signals of Nano River
1018           Technologies Viperboard. There are two GPIO chips on the
1019           board: gpioa and gpiob.
1020           See viperboard API specification and Nano
1021           River Tech's viperboard.h for detailed meaning
1022           of the module parameters.
1023 
1024 endmenu
1025 
1026 endif

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