Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

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 config GPIO_DA9052
 94         tristate "Dialog DA9052 GPIO"
 95         depends on PMIC_DA9052
 96         help
 97           Say yes here to enable the GPIO driver for the DA9052 chip.
 98 
 99 config GPIO_DA9055
100         tristate "Dialog Semiconductor DA9055 GPIO"
101         depends on MFD_DA9055
102         help
103           Say yes here to enable the GPIO driver for the DA9055 chip.
104 
105           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
106           be controller by this driver.
107 
108           If driver is built as a module it will be called gpio-da9055.
109 
110 config GPIO_MAX730X
111         tristate
112 
113 comment "Memory mapped GPIO drivers:"
114 
115 config GPIO_CLPS711X
116         tristate "CLPS711X GPIO support"
117         depends on ARCH_CLPS711X || COMPILE_TEST
118         select GPIO_GENERIC
119         help
120           Say yes here to support GPIO on CLPS711X SoCs.
121 
122 config GPIO_DAVINCI
123         bool "TI Davinci/Keystone GPIO support"
124         default y if ARCH_DAVINCI
125         depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
126         help
127           Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
128 
129 config GPIO_GENERIC_PLATFORM
130         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
131         select GPIO_GENERIC
132         help
133           Say yes here to support basic platform_device memory-mapped GPIO controllers.
134 
135 config GPIO_DWAPB
136         tristate "Synopsys DesignWare APB GPIO driver"
137         select GPIO_GENERIC
138         select GENERIC_IRQ_CHIP
139         depends on OF_GPIO
140         help
141           Say Y or M here to build support for the Synopsys DesignWare APB
142           GPIO block.
143 
144 config GPIO_IT8761E
145         tristate "IT8761E GPIO support"
146         depends on X86  # unconditional access to IO space.
147         help
148           Say yes here to support GPIO functionality of IT8761E super I/O chip.
149 
150 config GPIO_EM
151         tristate "Emma Mobile GPIO"
152         depends on ARM && OF_GPIO
153         help
154           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
155 
156 config GPIO_EP93XX
157         def_bool y
158         depends on ARCH_EP93XX
159         select GPIO_GENERIC
160 
161 config GPIO_ZEVIO
162         bool "LSI ZEVIO SoC memory mapped GPIOs"
163         depends on ARM && OF_GPIO
164         help
165           Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
166 
167 config GPIO_MM_LANTIQ
168         bool "Lantiq Memory mapped GPIOs"
169         depends on LANTIQ && SOC_XWAY
170         help
171           This enables support for memory mapped GPIOs on the External Bus Unit
172           (EBU) found on Lantiq SoCs. The gpios are output only as they are
173           created by attaching a 16bit latch to the bus.
174 
175 config GPIO_F7188X
176         tristate "F71882FG and F71889F GPIO support"
177         depends on X86
178         help
179           This option enables support for GPIOs found on Fintek Super-I/O
180           chips F71882FG and F71889F.
181 
182           To compile this driver as a module, choose M here: the module will
183           be called f7188x-gpio.
184 
185 config GPIO_MOXART
186         bool "MOXART GPIO support"
187         depends on ARCH_MOXART
188         help
189           Select this option to enable GPIO driver for
190           MOXA ART SoC devices.
191 
192 config GPIO_MPC5200
193         def_bool y
194         depends on PPC_MPC52xx
195 
196 config GPIO_MPC8XXX
197         bool "MPC512x/MPC8xxx GPIO support"
198         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
199                    FSL_SOC_BOOKE || PPC_86xx
200         help
201           Say Y here if you're going to use hardware that connects to the
202           MPC512x/831x/834x/837x/8572/8610 GPIOs.
203 
204 config GPIO_MSM_V1
205         tristate "Qualcomm MSM GPIO v1"
206         depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
207         help
208           Say yes here to support the GPIO interface on ARM v6 based
209           Qualcomm MSM chips.  Most of the pins on the MSM can be
210           selected for GPIO, and are controlled by this driver.
211 
212 config GPIO_MSM_V2
213         tristate "Qualcomm MSM GPIO v2"
214         depends on GPIOLIB && OF && ARCH_QCOM
215         help
216           Say yes here to support the GPIO interface on ARM v7 based
217           Qualcomm MSM chips.  Most of the pins on the MSM can be
218           selected for GPIO, and are controlled by this driver.
219 
220 config GPIO_MVEBU
221         def_bool y
222         depends on PLAT_ORION
223         depends on OF
224         select GPIO_GENERIC
225         select GENERIC_IRQ_CHIP
226 
227 config GPIO_MXC
228         def_bool y
229         depends on ARCH_MXC
230         select GPIO_GENERIC
231         select GENERIC_IRQ_CHIP
232 
233 config GPIO_MXS
234         def_bool y
235         depends on ARCH_MXS
236         select GPIO_GENERIC
237         select GENERIC_IRQ_CHIP
238 
239 config GPIO_OCTEON
240         tristate "Cavium OCTEON GPIO"
241         depends on GPIOLIB && CAVIUM_OCTEON_SOC
242         default y
243         help
244           Say yes here to support the on-chip GPIO lines on the OCTEON
245           family of SOCs.
246 
247 config GPIO_OMAP
248         bool "TI OMAP GPIO support" if COMPILE_TEST && !ARCH_OMAP2PLUS
249         default y if ARCH_OMAP
250         depends on ARM
251         select GENERIC_IRQ_CHIP
252         select GPIOLIB_IRQCHIP
253         help
254           Say yes here to enable GPIO support for TI OMAP SoCs.
255 
256 config GPIO_PL061
257         bool "PrimeCell PL061 GPIO support"
258         depends on ARM_AMBA
259         select IRQ_DOMAIN
260         select GPIOLIB_IRQCHIP
261         help
262           Say yes here to support the PrimeCell PL061 GPIO device
263 
264 config GPIO_PXA
265         bool "PXA GPIO support"
266         depends on ARCH_PXA || ARCH_MMP
267         help
268           Say yes here to support the PXA GPIO device
269 
270 config GPIO_RCAR
271         tristate "Renesas R-Car GPIO"
272         depends on ARM && (ARCH_SHMOBILE || COMPILE_TEST)
273         help
274           Say yes here to support GPIO on Renesas R-Car SoCs.
275 
276 config GPIO_SAMSUNG
277         bool
278         depends on PLAT_SAMSUNG
279         help
280           Legacy GPIO support. Use only for platforms without support for
281           pinctrl.
282 
283 config GPIO_SCH311X
284         tristate "SMSC SCH311x SuperI/O GPIO"
285         help
286           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
287           SCH3116 "Super I/O" chipsets.
288 
289           To compile this driver as a module, choose M here: the module will
290           be called gpio-sch311x.
291 
292 config GPIO_SPEAR_SPICS
293         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
294         depends on PLAT_SPEAR
295         select GENERIC_IRQ_CHIP
296         help
297           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
298 
299 config GPIO_STA2X11
300         bool "STA2x11/ConneXt GPIO support"
301         depends on MFD_STA2X11
302         select GENERIC_IRQ_CHIP
303         help
304           Say yes here to support the STA2x11/ConneXt GPIO device.
305           The GPIO module has 128 GPIO pins with alternate functions.
306 
307 config GPIO_SYSCON
308         tristate "GPIO based on SYSCON"
309         depends on MFD_SYSCON && OF
310         help
311           Say yes here to support GPIO functionality though SYSCON driver.
312 
313 config GPIO_TS5500
314         tristate "TS-5500 DIO blocks and compatibles"
315         depends on TS5500 || COMPILE_TEST
316         help
317           This driver supports Digital I/O exposed by pin blocks found on some
318           Technologic Systems platforms. It includes, but is not limited to, 3
319           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
320           LCD port.
321 
322 config GPIO_TZ1090
323         bool "Toumaz Xenif TZ1090 GPIO support"
324         depends on SOC_TZ1090
325         select GENERIC_IRQ_CHIP
326         default y
327         help
328           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
329 
330 config GPIO_TZ1090_PDC
331         bool "Toumaz Xenif TZ1090 PDC GPIO support"
332         depends on SOC_TZ1090
333         default y
334         help
335           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
336 
337 config GPIO_XILINX
338         bool "Xilinx GPIO support"
339         depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
340         help
341           Say yes here to support the Xilinx FPGA GPIO device
342 
343 config GPIO_ZYNQ
344         tristate "Xilinx Zynq GPIO support"
345         depends on ARCH_ZYNQ
346         select GPIOLIB_IRQCHIP
347         help
348           Say yes here to support Xilinx Zynq GPIO controller.
349 
350 config GPIO_XTENSA
351         bool "Xtensa GPIO32 support"
352         depends on XTENSA
353         depends on HAVE_XTENSA_GPIO32
354         depends on !SMP
355         help
356           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
357           and EXPSTATE (output) ports
358 
359 config GPIO_VR41XX
360         tristate "NEC VR4100 series General-purpose I/O Uint support"
361         depends on CPU_VR41XX
362         help
363           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
364 
365 config GPIO_SCH
366         tristate "Intel SCH/TunnelCreek/Centerton GPIO"
367         depends on PCI && X86
368         select MFD_CORE
369         select LPC_SCH
370         help
371           Say yes here to support GPIO interface on Intel Poulsbo SCH,
372           Intel Tunnel Creek processor or Intel Centerton processor.
373           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
374           powered by the core power rail and are turned off during sleep
375           modes (S3 and higher). The remaining four GPIOs are powered by
376           the Intel SCH suspend power supply. These GPIOs remain
377           active during S3. The suspend powered GPIOs can be used to wake the
378           system from the Suspend-to-RAM state.
379           The Intel Tunnel Creek processor has 5 GPIOs powered by the
380           core power rail and 9 from suspend power supply.
381           The Intel Centerton processor has a total of 30 GPIO pins.
382           Twenty-one are powered by the core power rail and 9 from the
383           suspend power supply.
384 
385 config GPIO_ICH
386         tristate "Intel ICH GPIO"
387         depends on PCI && X86
388         select MFD_CORE
389         select LPC_ICH
390         help
391           Say yes here to support the GPIO functionality of a number of Intel
392           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
393           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
394           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
395 
396           If unsure, say N.
397 
398 config GPIO_IOP
399         tristate "Intel IOP GPIO"
400         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
401         help
402           Say yes here to support the GPIO functionality of a number of Intel
403           IOP32X or IOP33X.
404 
405           If unsure, say N.
406 
407 config GPIO_VX855
408         tristate "VIA VX855/VX875 GPIO"
409         depends on PCI
410         select MFD_CORE
411         select MFD_VX855
412         help
413           Support access to the VX855/VX875 GPIO lines through the gpio library.
414 
415           This driver provides common support for accessing the device,
416           additional drivers must be enabled in order to use the
417           functionality of the device.
418 
419 config GPIO_GE_FPGA
420         bool "GE FPGA based GPIO"
421         depends on GE_FPGA
422         help
423           Support for common GPIO functionality provided on some GE Single Board
424           Computers.
425 
426           This driver provides basic support (configure as input or output, read
427           and write pin state) for GPIO implemented in a number of GE single
428           board computers.
429 
430 config GPIO_LYNXPOINT
431         tristate "Intel Lynxpoint GPIO support"
432         depends on ACPI && X86
433         select GPIOLIB_IRQCHIP
434         help
435           driver for GPIO functionality on Intel Lynxpoint PCH chipset
436           Requires ACPI device enumeration code to set up a platform device.
437 
438 config GPIO_GRGPIO
439         tristate "Aeroflex Gaisler GRGPIO support"
440         depends on OF
441         select GPIO_GENERIC
442         select IRQ_DOMAIN
443         help
444           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
445           VHDL IP core library.
446 
447 config GPIO_TB10X
448         bool
449         select GENERIC_IRQ_CHIP
450         select OF_GPIO
451 
452 comment "I2C GPIO expanders:"
453 
454 config GPIO_ARIZONA
455         tristate "Wolfson Microelectronics Arizona class devices"
456         depends on MFD_ARIZONA
457         help
458           Support for GPIOs on Wolfson Arizona class devices.
459 
460 config GPIO_CRYSTAL_COVE
461         tristate "GPIO support for Crystal Cove PMIC"
462         depends on INTEL_SOC_PMIC
463         select GPIOLIB_IRQCHIP
464         help
465           Support for GPIO pins on Crystal Cove PMIC.
466 
467           Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
468           inside.
469 
470           This driver can also be built as a module. If so, the module will be
471           called gpio-crystalcove.
472 
473 config GPIO_LP3943
474         tristate "TI/National Semiconductor LP3943 GPIO expander"
475         depends on MFD_LP3943
476         help
477           GPIO driver for LP3943 MFD.
478           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
479           Open drain outputs are required for this usage.
480 
481 config GPIO_MAX7300
482         tristate "Maxim MAX7300 GPIO expander"
483         depends on I2C
484         select GPIO_MAX730X
485         help
486           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
487 
488 config GPIO_MAX732X
489         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
490         depends on I2C
491         help
492           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
493           Port Expanders. Each IO port on these chips has a fixed role of
494           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
495           Input and Output (designed by 'P'). The combinations are listed
496           below:
497 
498           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
499                         max7322 (4I4O), max7323 (4P4O)
500 
501           16 bits:      max7324 (8I8O), max7325 (8P8O),
502                         max7326 (4I12O), max7327 (4P12O)
503 
504           Board setup code must specify the model to use, and the start
505           number for these GPIOs.
506 
507 config GPIO_MAX732X_IRQ
508         bool "Interrupt controller support for MAX732x"
509         depends on GPIO_MAX732X=y
510         help
511           Say yes here to enable the max732x to be used as an interrupt
512           controller. It requires the driver to be built in the kernel.
513 
514 config GPIO_MC9S08DZ60
515         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
516         depends on I2C=y && MACH_MX35_3DS
517         help
518           Select this to enable the MC9S08DZ60 GPIO driver
519 
520 config GPIO_PCA953X
521         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
522         depends on I2C
523         help
524           Say yes here to provide access to several register-oriented
525           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
526           models include:
527 
528           4 bits:       pca9536, pca9537
529 
530           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
531                         pca9556, pca9557, pca9574, tca6408, xra1202
532 
533           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
534                         tca6416
535 
536           24 bits:      tca6424
537 
538           40 bits:      pca9505, pca9698
539 
540 config GPIO_PCA953X_IRQ
541         bool "Interrupt controller support for PCA953x"
542         depends on GPIO_PCA953X=y
543         select GPIOLIB_IRQCHIP
544         help
545           Say yes here to enable the pca953x to be used as an interrupt
546           controller. It requires the driver to be built in the kernel.
547 
548 config GPIO_PCF857X
549         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
550         depends on I2C
551         select IRQ_DOMAIN
552         help
553           Say yes here to provide access to most "quasi-bidirectional" I2C
554           GPIO expanders used for additional digital outputs or inputs.
555           Most of these parts are from NXP, though TI is a second source for
556           some of them.  Compatible models include:
557 
558           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
559                     pca9670, pca9672, pca9674, pca9674a,
560                     max7328, max7329
561 
562           16 bits:  pcf8575, pcf8575c, pca8575,
563                     pca9671, pca9673, pca9675
564 
565           Your board setup code will need to declare the expanders in
566           use, and assign numbers to the GPIOs they expose.  Those GPIOs
567           can then be used from drivers and other kernel code, just like
568           other GPIOs, but only accessible from task contexts.
569 
570           This driver provides an in-kernel interface to those GPIOs using
571           platform-neutral GPIO calls.
572 
573 config GPIO_RC5T583
574         bool "RICOH RC5T583 GPIO"
575         depends on MFD_RC5T583
576         help
577           Select this option to enable GPIO driver for the Ricoh RC5T583
578           chip family.
579           This driver provides the support for driving/reading the gpio pins
580           of RC5T583 device through standard gpio library.
581 
582 config GPIO_SX150X
583         bool "Semtech SX150x I2C GPIO expander"
584         depends on I2C=y
585         default n
586         help
587           Say yes here to provide support for Semtech SX150-series I2C
588           GPIO expanders. Compatible models include:
589 
590           8 bits:  sx1508q
591           16 bits: sx1509q
592 
593 config GPIO_STMPE
594         bool "STMPE GPIOs"
595         depends on MFD_STMPE
596         select GPIOLIB_IRQCHIP
597         help
598           This enables support for the GPIOs found on the STMPE I/O
599           Expanders.
600 
601 config GPIO_STP_XWAY
602         bool "XWAY STP GPIOs"
603         depends on SOC_XWAY
604         help
605           This enables support for the Serial To Parallel (STP) unit found on
606           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
607           that can be up to 24 bit. This peripheral is aimed at driving leds.
608           Some of the gpios/leds can be auto updated by the soc with dsl and
609           phy status.
610 
611 config GPIO_TC3589X
612         bool "TC3589X GPIOs"
613         depends on MFD_TC3589X
614         select GPIOLIB_IRQCHIP
615         help
616           This enables support for the GPIOs found on the TC3589X
617           I/O Expander.
618 
619 config GPIO_TPS65912
620         tristate "TI TPS65912 GPIO"
621         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
622         help
623           This driver supports TPS65912 gpio chip
624 
625 config GPIO_TWL4030
626         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
627         depends on TWL4030_CORE
628         help
629           Say yes here to access the GPIO signals of various multi-function
630           power management chips from Texas Instruments.
631 
632 config GPIO_TWL6040
633         tristate "TWL6040 GPO"
634         depends on TWL6040_CORE
635         help
636           Say yes here to access the GPO signals of twl6040
637           audio chip from Texas Instruments.
638 
639 config GPIO_WM831X
640         tristate "WM831x GPIOs"
641         depends on MFD_WM831X
642         help
643           Say yes here to access the GPIO signals of WM831x power management
644           chips from Wolfson Microelectronics.
645 
646 config GPIO_WM8350
647         tristate "WM8350 GPIOs"
648         depends on MFD_WM8350
649         help
650           Say yes here to access the GPIO signals of WM8350 power management
651           chips from Wolfson Microelectronics.
652 
653 config GPIO_WM8994
654         tristate "WM8994 GPIOs"
655         depends on MFD_WM8994
656         help
657           Say yes here to access the GPIO signals of WM8994 audio hub
658           CODECs from Wolfson Microelectronics.
659 
660 config GPIO_ADP5520
661         tristate "GPIO Support for ADP5520 PMIC"
662         depends on PMIC_ADP5520
663         help
664           This option enables support for on-chip GPIO found
665           on Analog Devices ADP5520 PMICs.
666 
667 config GPIO_ADP5588
668         tristate "ADP5588 I2C GPIO expander"
669         depends on I2C
670         help
671           This option enables support for 18 GPIOs found
672           on Analog Devices ADP5588 GPIO Expanders.
673 
674 config GPIO_ADP5588_IRQ
675         bool "Interrupt controller support for ADP5588"
676         depends on GPIO_ADP5588=y
677         help
678           Say yes here to enable the adp5588 to be used as an interrupt
679           controller. It requires the driver to be built in the kernel.
680 
681 config GPIO_ADNP
682         tristate "Avionic Design N-bit GPIO expander"
683         depends on I2C && OF_GPIO
684         help
685           This option enables support for N GPIOs found on Avionic Design
686           I2C GPIO expanders. The register space will be extended by powers
687           of two, so the controller will need to accommodate for that. For
688           example: if a controller provides 48 pins, 6 registers will be
689           enough to represent all pins, but the driver will assume a
690           register layout for 64 pins (8 registers).
691 
692 comment "PCI GPIO expanders:"
693 
694 config GPIO_CS5535
695         tristate "AMD CS5535/CS5536 GPIO support"
696         depends on MFD_CS5535
697         help
698           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
699           can be used for quite a number of things.  The CS5535/6 is found on
700           AMD Geode and Lemote Yeeloong devices.
701 
702           If unsure, say N.
703 
704 config GPIO_BT8XX
705         tristate "BT8XX GPIO abuser"
706         depends on PCI && VIDEO_BT848=n
707         help
708           The BT8xx frame grabber chip has 24 GPIO pins that can be abused
709           as a cheap PCI GPIO card.
710 
711           This chip can be found on Miro, Hauppauge and STB TV-cards.
712 
713           The card needs to be physically altered for using it as a
714           GPIO card. For more information on how to build a GPIO card
715           from a BT8xx TV card, see the documentation file at
716           Documentation/bt8xxgpio.txt
717 
718           If unsure, say N.
719 
720 config GPIO_AMD8111
721         tristate "AMD 8111 GPIO driver"
722         depends on PCI
723         help
724           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
725 
726           Note, that usually system firmware/ACPI handles GPIO pins on their
727           own and users might easily break their systems with uncarefull usage
728           of this driver!
729 
730           If unsure, say N
731 
732 config GPIO_INTEL_MID
733         bool "Intel Mid GPIO support"
734         depends on PCI && X86
735         select GPIOLIB_IRQCHIP
736         help
737           Say Y here to support Intel Mid GPIO.
738 
739 config GPIO_PCH
740         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
741         depends on PCI && (X86_32 || COMPILE_TEST)
742         select GENERIC_IRQ_CHIP
743         help
744           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
745           which is an IOH(Input/Output Hub) for x86 embedded processor.
746           This driver can access PCH GPIO device.
747 
748           This driver also can be used for LAPIS Semiconductor IOH(Input/
749           Output Hub), ML7223 and ML7831.
750           ML7223 IOH is for MP(Media Phone) use.
751           ML7831 IOH is for general purpose use.
752           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
753           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
754 
755 config GPIO_ML_IOH
756         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
757         depends on PCI
758         select GENERIC_IRQ_CHIP
759         help
760           ML7213 is companion chip for Intel Atom E6xx series.
761           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
762           Hub) which is for IVI(In-Vehicle Infotainment) use.
763           This driver can access the IOH's GPIO device.
764 
765 config GPIO_SODAVILLE
766         bool "Intel Sodaville GPIO support"
767         depends on X86 && PCI && OF
768         select GPIO_GENERIC
769         select GENERIC_IRQ_CHIP
770         help
771           Say Y here to support Intel Sodaville GPIO.
772 
773 config GPIO_TIMBERDALE
774         bool "Support for timberdale GPIO IP"
775         depends on MFD_TIMBERDALE
776         ---help---
777         Add support for the GPIO IP in the timberdale FPGA.
778 
779 config GPIO_RDC321X
780         tristate "RDC R-321x GPIO support"
781         depends on PCI
782         select MFD_CORE
783         select MFD_RDC321X
784         help
785           Support for the RDC R321x SoC GPIOs over southbridge
786           PCI configuration space.
787 
788 comment "SPI GPIO expanders:"
789 
790 config GPIO_MAX7301
791         tristate "Maxim MAX7301 GPIO expander"
792         depends on SPI_MASTER
793         select GPIO_MAX730X
794         help
795           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
796 
797 config GPIO_MCP23S08
798         tristate "Microchip MCP23xxx I/O expander"
799         depends on OF_GPIO
800         depends on (SPI_MASTER && !I2C) || I2C
801         help
802           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
803           I/O expanders.
804           This provides a GPIO interface supporting inputs and outputs.
805           The I2C versions of the chips can be used as interrupt-controller.
806 
807 config GPIO_MC33880
808         tristate "Freescale MC33880 high-side/low-side switch"
809         depends on SPI_MASTER
810         help
811           SPI driver for Freescale MC33880 high-side/low-side switch.
812           This provides GPIO interface supporting inputs and outputs.
813 
814 config GPIO_74X164
815         tristate "74x164 serial-in/parallel-out 8-bits shift register"
816         depends on SPI_MASTER && OF
817         help
818           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
819           shift registers. This driver can be used to provide access
820           to more gpio outputs.
821 
822 comment "AC97 GPIO expanders:"
823 
824 config GPIO_UCB1400
825         tristate "Philips UCB1400 GPIO"
826         depends on UCB1400_CORE
827         help
828           This enables support for the Philips UCB1400 GPIO pins.
829           The UCB1400 is an AC97 audio codec.
830 
831 comment "LPC GPIO expanders:"
832 
833 config GPIO_KEMPLD
834         tristate "Kontron ETX / COMexpress GPIO"
835         depends on MFD_KEMPLD
836         help
837           This enables support for the PLD GPIO interface on some Kontron ETX
838           and COMexpress (ETXexpress) modules.
839 
840           This driver can also be built as a module. If so, the module will be
841           called gpio-kempld.
842 
843 comment "MODULbus GPIO expanders:"
844 
845 config GPIO_JANZ_TTL
846         tristate "Janz VMOD-TTL Digital IO Module"
847         depends on MFD_JANZ_CMODIO
848         help
849           This enables support for the Janz VMOD-TTL Digital IO module.
850           This driver provides support for driving the pins in output
851           mode only. Input mode is not supported.
852 
853 config GPIO_PALMAS
854         bool "TI PALMAS series PMICs GPIO"
855         depends on MFD_PALMAS
856         help
857           Select this option to enable GPIO driver for the TI PALMAS
858           series chip family.
859 
860 config GPIO_TPS6586X
861         bool "TPS6586X GPIO"
862         depends on MFD_TPS6586X
863         help
864           Select this option to enable GPIO driver for the TPS6586X
865           chip family.
866 
867 config GPIO_TPS65910
868         bool "TPS65910 GPIO"
869         depends on MFD_TPS65910
870         help
871           Select this option to enable GPIO driver for the TPS65910
872           chip family.
873 
874 config GPIO_MSIC
875         bool "Intel MSIC mixed signal gpio support"
876         depends on MFD_INTEL_MSIC
877         help
878           Enable support for GPIO on intel MSIC controllers found in
879           intel MID devices
880 
881 config GPIO_BCM_KONA
882         bool "Broadcom Kona GPIO"
883         depends on OF_GPIO
884         help
885           Turn on GPIO support for Broadcom "Kona" chips.
886 
887 comment "USB GPIO expanders:"
888 
889 config GPIO_VIPERBOARD
890         tristate "Viperboard GPIO a & b support"
891         depends on MFD_VIPERBOARD && USB
892         help
893           Say yes here to access the GPIO signals of Nano River
894           Technologies Viperboard. There are two GPIO chips on the
895           board: gpioa and gpiob.
896           See viperboard API specification and Nano
897           River Tech's viperboard.h for detailed meaning
898           of the module parameters.
899 
900 endif

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