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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 GPIOLIB_IRQCHIP
117         help
118           Say Y or M here to build support for the Altera PIO device.
119 
120           If driver is built as a module it will be called gpio-altera.
121 
122 config GPIO_AMDPT
123         tristate "AMD Promontory GPIO support"
124         depends on ACPI
125         help
126           driver for GPIO functionality on Promontory IOHub
127           Require ACPI ASL code to enumerate as a platform device.
128 
129 config GPIO_ATH79
130         tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
131         default y if ATH79
132         depends on ATH79 || COMPILE_TEST
133         select GPIO_GENERIC
134         select GPIOLIB_IRQCHIP
135         help
136           Select this option to enable GPIO driver for
137           Atheros AR71XX/AR724X/AR913X SoC devices.
138 
139 config GPIO_BCM_KONA
140         bool "Broadcom Kona GPIO"
141         depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
142         help
143           Turn on GPIO support for Broadcom "Kona" chips.
144 
145 config GPIO_BRCMSTB
146         tristate "BRCMSTB GPIO support"
147         default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
148         depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
149         select GPIO_GENERIC
150         select GPIOLIB_IRQCHIP
151         help
152           Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
153 
154 config GPIO_CLPS711X
155         tristate "CLPS711X GPIO support"
156         depends on ARCH_CLPS711X || COMPILE_TEST
157         select GPIO_GENERIC
158         help
159           Say yes here to support GPIO on CLPS711X SoCs.
160 
161 config GPIO_DAVINCI
162         bool "TI Davinci/Keystone GPIO support"
163         default y if ARCH_DAVINCI
164         depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
165         help
166           Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
167 
168 config GPIO_DWAPB
169         tristate "Synopsys DesignWare APB GPIO driver"
170         select GPIO_GENERIC
171         select GENERIC_IRQ_CHIP
172         help
173           Say Y or M here to build support for the Synopsys DesignWare APB
174           GPIO block.
175 
176 config GPIO_EM
177         tristate "Emma Mobile GPIO"
178         depends on ARM && OF_GPIO
179         help
180           Say yes here to support GPIO on Renesas Emma Mobile SoCs.
181 
182 config GPIO_EP93XX
183         def_bool y
184         depends on ARCH_EP93XX
185         select GPIO_GENERIC
186 
187 config GPIO_ETRAXFS
188         bool "Axis ETRAX FS General I/O"
189         depends on CRIS || COMPILE_TEST
190         depends on OF
191         select GPIO_GENERIC
192         select GPIOLIB_IRQCHIP
193         help
194           Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
195 
196 config GPIO_GE_FPGA
197         bool "GE FPGA based GPIO"
198         depends on GE_FPGA
199         select GPIO_GENERIC
200         help
201           Support for common GPIO functionality provided on some GE Single Board
202           Computers.
203 
204           This driver provides basic support (configure as input or output, read
205           and write pin state) for GPIO implemented in a number of GE single
206           board computers.
207 
208 config GPIO_GENERIC_PLATFORM
209         tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
210         select GPIO_GENERIC
211         help
212           Say yes here to support basic platform_device memory-mapped GPIO controllers.
213 
214 config GPIO_GRGPIO
215         tristate "Aeroflex Gaisler GRGPIO support"
216         depends on OF
217         select GPIO_GENERIC
218         select IRQ_DOMAIN
219         help
220           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
221           VHDL IP core library.
222 
223 config GPIO_ICH
224         tristate "Intel ICH GPIO"
225         depends on PCI && X86
226         select MFD_CORE
227         select LPC_ICH
228         help
229           Say yes here to support the GPIO functionality of a number of Intel
230           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
231           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
232           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
233 
234           If unsure, say N.
235 
236 config GPIO_IOP
237         tristate "Intel IOP GPIO"
238         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
239         help
240           Say yes here to support the GPIO functionality of a number of Intel
241           IOP32X or IOP33X.
242 
243           If unsure, say N.
244 
245 config GPIO_LOONGSON
246         bool "Loongson-2/3 GPIO support"
247         depends on CPU_LOONGSON2 || CPU_LOONGSON3
248         help
249           driver for GPIO functionality on Loongson-2F/3A/3B processors.
250 
251 config GPIO_LPC18XX
252         bool "NXP LPC18XX/43XX GPIO support"
253         default y if ARCH_LPC18XX
254         depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
255         help
256           Select this option to enable GPIO driver for
257           NXP LPC18XX/43XX devices.
258 
259 config GPIO_LYNXPOINT
260         tristate "Intel Lynxpoint GPIO support"
261         depends on ACPI && X86
262         select GPIOLIB_IRQCHIP
263         help
264           driver for GPIO functionality on Intel Lynxpoint PCH chipset
265           Requires ACPI device enumeration code to set up a platform device.
266 
267 config GPIO_MB86S7X
268         bool "GPIO support for Fujitsu MB86S7x Platforms"
269         depends on ARCH_MB86S7X || COMPILE_TEST
270         help
271           Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
272 
273 config GPIO_MENZ127
274         tristate "MEN 16Z127 GPIO support"
275         depends on MCB
276         select GPIO_GENERIC
277         help
278          Say yes here to support the MEN 16Z127 GPIO Controller
279 
280 config GPIO_MM_LANTIQ
281         bool "Lantiq Memory mapped GPIOs"
282         depends on LANTIQ && SOC_XWAY
283         help
284           This enables support for memory mapped GPIOs on the External Bus Unit
285           (EBU) found on Lantiq SoCs. The gpios are output only as they are
286           created by attaching a 16bit latch to the bus.
287 
288 config GPIO_MOXART
289         bool "MOXART GPIO support"
290         depends on ARCH_MOXART || COMPILE_TEST
291         select GPIO_GENERIC
292         help
293           Select this option to enable GPIO driver for
294           MOXA ART SoC devices.
295 
296 config GPIO_MPC5200
297         def_bool y
298         depends on PPC_MPC52xx
299 
300 config GPIO_MPC8XXX
301         bool "MPC512x/MPC8xxx/QorIQ GPIO support"
302         depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
303                    FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
304                    COMPILE_TEST
305         select GPIO_GENERIC
306         help
307           Say Y here if you're going to use hardware that connects to the
308           MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
309 
310 config GPIO_MVEBU
311         def_bool y
312         depends on PLAT_ORION
313         depends on OF
314         select GENERIC_IRQ_CHIP
315 
316 config GPIO_MXC
317         def_bool y
318         depends on ARCH_MXC
319         select GPIO_GENERIC
320         select GENERIC_IRQ_CHIP
321 
322 config GPIO_MXS
323         def_bool y
324         depends on ARCH_MXS
325         select GPIO_GENERIC
326         select GENERIC_IRQ_CHIP
327 
328 config GPIO_OCTEON
329         tristate "Cavium OCTEON GPIO"
330         depends on GPIOLIB && CAVIUM_OCTEON_SOC
331         default y
332         help
333           Say yes here to support the on-chip GPIO lines on the OCTEON
334           family of SOCs.
335 
336 config GPIO_OMAP
337         tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
338         default y if ARCH_OMAP
339         depends on ARM
340         select GENERIC_IRQ_CHIP
341         select GPIOLIB_IRQCHIP
342         help
343           Say yes here to enable GPIO support for TI OMAP SoCs.
344 
345 config GPIO_PL061
346         bool "PrimeCell PL061 GPIO support"
347         depends on ARM_AMBA
348         select IRQ_DOMAIN
349         select GPIOLIB_IRQCHIP
350         help
351           Say yes here to support the PrimeCell PL061 GPIO device
352 
353 config GPIO_PXA
354         bool "PXA GPIO support"
355         depends on ARCH_PXA || ARCH_MMP
356         help
357           Say yes here to support the PXA GPIO device
358 
359 config GPIO_RCAR
360         tristate "Renesas R-Car GPIO"
361         depends on ARCH_RENESAS || COMPILE_TEST
362         select GPIOLIB_IRQCHIP
363         help
364           Say yes here to support GPIO on Renesas R-Car SoCs.
365 
366 config GPIO_SPEAR_SPICS
367         bool "ST SPEAr13xx SPI Chip Select as GPIO support"
368         depends on PLAT_SPEAR
369         select GENERIC_IRQ_CHIP
370         help
371           Say yes here to support ST SPEAr SPI Chip Select as GPIO device
372 
373 config GPIO_STA2X11
374         bool "STA2x11/ConneXt GPIO support"
375         depends on MFD_STA2X11
376         select GENERIC_IRQ_CHIP
377         help
378           Say yes here to support the STA2x11/ConneXt GPIO device.
379           The GPIO module has 128 GPIO pins with alternate functions.
380 
381 config GPIO_STP_XWAY
382         bool "XWAY STP GPIOs"
383         depends on SOC_XWAY
384         help
385           This enables support for the Serial To Parallel (STP) unit found on
386           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
387           that can be up to 24 bit. This peripheral is aimed at driving leds.
388           Some of the gpios/leds can be auto updated by the soc with dsl and
389           phy status.
390 
391 config GPIO_SYSCON
392         tristate "GPIO based on SYSCON"
393         depends on MFD_SYSCON && OF
394         help
395           Say yes here to support GPIO functionality though SYSCON driver.
396 
397 config GPIO_TB10X
398         bool
399         select GENERIC_IRQ_CHIP
400         select OF_GPIO
401 
402 config GPIO_TS4800
403         tristate "TS-4800 DIO blocks and compatibles"
404         depends on OF_GPIO
405         depends on SOC_IMX51 || COMPILE_TEST
406         select GPIO_GENERIC
407         help
408           This driver support TS-4800 FPGA GPIO controllers.
409 
410 config GPIO_TZ1090
411         bool "Toumaz Xenif TZ1090 GPIO support"
412         depends on SOC_TZ1090
413         select GENERIC_IRQ_CHIP
414         default y
415         help
416           Say yes here to support Toumaz Xenif TZ1090 GPIOs.
417 
418 config GPIO_TZ1090_PDC
419         bool "Toumaz Xenif TZ1090 PDC GPIO support"
420         depends on SOC_TZ1090
421         default y
422         help
423           Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
424 
425 config GPIO_VF610
426         def_bool y
427         depends on ARCH_MXC && SOC_VF610
428         select GPIOLIB_IRQCHIP
429         help
430           Say yes here to support Vybrid vf610 GPIOs.
431 
432 config GPIO_VR41XX
433         tristate "NEC VR4100 series General-purpose I/O Uint support"
434         depends on CPU_VR41XX
435         help
436           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
437 
438 config GPIO_VX855
439         tristate "VIA VX855/VX875 GPIO"
440         depends on PCI
441         select MFD_CORE
442         select MFD_VX855
443         help
444           Support access to the VX855/VX875 GPIO lines through the gpio library.
445 
446           This driver provides common support for accessing the device,
447           additional drivers must be enabled in order to use the
448           functionality of the device.
449 
450 config GPIO_XGENE
451         bool "APM X-Gene GPIO controller support"
452         depends on ARM64 && OF_GPIO
453         help
454           This driver is to support the GPIO block within the APM X-Gene SoC
455           platform's generic flash controller. The GPIO pins are muxed with
456           the generic flash controller's address and data pins. Say yes
457           here to enable the GFC GPIO functionality.
458 
459 config GPIO_XGENE_SB
460         tristate "APM X-Gene GPIO standby controller support"
461         depends on ARCH_XGENE && OF_GPIO
462         select GPIO_GENERIC
463         select GPIOLIB_IRQCHIP
464         help
465           This driver supports the GPIO block within the APM X-Gene
466           Standby Domain. Say yes here to enable the GPIO functionality.
467 
468 config GPIO_XILINX
469         tristate "Xilinx GPIO support"
470         depends on OF_GPIO
471         help
472           Say yes here to support the Xilinx FPGA GPIO device
473 
474 config GPIO_XLP
475         tristate "Netlogic XLP GPIO support"
476         depends on CPU_XLP && OF_GPIO
477         select GPIOLIB_IRQCHIP
478         help
479           This driver provides support for GPIO interface on Netlogic XLP MIPS64
480           SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
481           XLP9XX and XLP5XX.
482 
483           If unsure, say N.
484 
485 config GPIO_XTENSA
486         bool "Xtensa GPIO32 support"
487         depends on XTENSA
488         depends on HAVE_XTENSA_GPIO32
489         depends on !SMP
490         help
491           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
492           and EXPSTATE (output) ports
493 
494 config GPIO_ZEVIO
495         bool "LSI ZEVIO SoC memory mapped GPIOs"
496         depends on ARM && OF_GPIO
497         help
498           Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
499 
500 config GPIO_ZYNQ
501         tristate "Xilinx Zynq GPIO support"
502         depends on ARCH_ZYNQ || ARCH_ZYNQMP
503         select GPIOLIB_IRQCHIP
504         help
505           Say yes here to support Xilinx Zynq GPIO controller.
506 
507 config GPIO_ZX
508         bool "ZTE ZX GPIO support"
509         select GPIOLIB_IRQCHIP
510         help
511           Say yes here to support the GPIO device on ZTE ZX SoCs.
512 
513 endmenu
514 
515 menu "Port-mapped I/O GPIO drivers"
516         depends on X86 # Unconditional I/O space access
517 
518 config GPIO_104_DIO_48E
519         tristate "ACCES 104-DIO-48E GPIO support"
520         select GPIOLIB_IRQCHIP
521         help
522           Enables GPIO support for the ACCES 104-DIO-48E family. The base port
523           address for the device may be configured via the dio_48e_base module
524           parameter. The interrupt line number for the device may be configured
525           via the dio_48e_irq module parameter.
526 
527 config GPIO_104_IDIO_16
528         tristate "ACCES 104-IDIO-16 GPIO support"
529         select GPIOLIB_IRQCHIP
530         help
531           Enables GPIO support for the ACCES 104-IDIO-16 family. The base port
532           address for the device may be set via the idio_16_base module
533           parameter. The interrupt line number for the device may be set via the
534           idio_16_irq module parameter.
535 
536 config GPIO_104_IDI_48
537         tristate "ACCES 104-IDI-48 GPIO support"
538         select GPIOLIB_IRQCHIP
539         help
540           Enables GPIO support for the ACCES 104-IDI-48 family. The base port
541           address for the device may be configured via the idi_48_base module
542           parameter. The interrupt line number for the device may be configured
543           via the idi_48_irq module parameter.
544 
545 config GPIO_F7188X
546         tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
547         help
548           This option enables support for GPIOs found on Fintek Super-I/O
549           chips F71869, F71869A, F71882FG, F71889F and F81866.
550 
551           To compile this driver as a module, choose M here: the module will
552           be called f7188x-gpio.
553 
554 config GPIO_IT87
555         tristate "IT87xx GPIO support"
556         help
557           Say yes here to support GPIO functionality of IT87xx Super I/O chips.
558 
559           This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
560           supports the IT8761E Super I/O chip as well.
561 
562           To compile this driver as a module, choose M here: the module will
563           be called gpio_it87
564 
565 config GPIO_SCH
566         tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
567         depends on PCI
568         select MFD_CORE
569         select LPC_SCH
570         help
571           Say yes here to support GPIO interface on Intel Poulsbo SCH,
572           Intel Tunnel Creek processor, Intel Centerton processor or
573           Intel Quark X1000 SoC.
574 
575           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
576           powered by the core power rail and are turned off during sleep
577           modes (S3 and higher). The remaining four GPIOs are powered by
578           the Intel SCH suspend power supply. These GPIOs remain
579           active during S3. The suspend powered GPIOs can be used to wake the
580           system from the Suspend-to-RAM state.
581 
582           The Intel Tunnel Creek processor has 5 GPIOs powered by the
583           core power rail and 9 from suspend power supply.
584 
585           The Intel Centerton processor has a total of 30 GPIO pins.
586           Twenty-one are powered by the core power rail and 9 from the
587           suspend power supply.
588 
589           The Intel Quark X1000 SoC has 2 GPIOs powered by the core
590           power well and 6 from the suspend power well.
591 
592 config GPIO_SCH311X
593         tristate "SMSC SCH311x SuperI/O GPIO"
594         help
595           Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
596           SCH3116 "Super I/O" chipsets.
597 
598           To compile this driver as a module, choose M here: the module will
599           be called gpio-sch311x.
600 
601 config GPIO_TS5500
602         tristate "TS-5500 DIO blocks and compatibles"
603         depends on TS5500 || COMPILE_TEST
604         help
605           This driver supports Digital I/O exposed by pin blocks found on some
606           Technologic Systems platforms. It includes, but is not limited to, 3
607           blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
608           LCD port.
609 
610 config GPIO_WS16C48
611         tristate "WinSystems WS16C48 GPIO support"
612         select GPIOLIB_IRQCHIP
613         help
614           Enables GPIO support for the WinSystems WS16C48. The base port address
615           for the device may be configured via the ws16c48_base module
616           parameter. The interrupt line number for the device may be configured
617           via the ws16c48_irq module parameter.
618 
619 endmenu
620 
621 menu "I2C GPIO expanders"
622         depends on I2C
623 
624 config GPIO_ADP5588
625         tristate "ADP5588 I2C GPIO expander"
626         help
627           This option enables support for 18 GPIOs found
628           on Analog Devices ADP5588 GPIO Expanders.
629 
630 config GPIO_ADP5588_IRQ
631         bool "Interrupt controller support for ADP5588"
632         depends on GPIO_ADP5588=y
633         help
634           Say yes here to enable the adp5588 to be used as an interrupt
635           controller. It requires the driver to be built in the kernel.
636 
637 config GPIO_ADNP
638         tristate "Avionic Design N-bit GPIO expander"
639         depends on OF_GPIO
640         select GPIOLIB_IRQCHIP
641         help
642           This option enables support for N GPIOs found on Avionic Design
643           I2C GPIO expanders. The register space will be extended by powers
644           of two, so the controller will need to accommodate for that. For
645           example: if a controller provides 48 pins, 6 registers will be
646           enough to represent all pins, but the driver will assume a
647           register layout for 64 pins (8 registers).
648 
649 config GPIO_MAX7300
650         tristate "Maxim MAX7300 GPIO expander"
651         select GPIO_MAX730X
652         help
653           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
654 
655 config GPIO_MAX732X
656         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
657         help
658           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
659           Port Expanders. Each IO port on these chips has a fixed role of
660           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
661           Input and Output (designed by 'P'). The combinations are listed
662           below:
663 
664           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
665                         max7322 (4I4O), max7323 (4P4O)
666 
667           16 bits:      max7324 (8I8O), max7325 (8P8O),
668                         max7326 (4I12O), max7327 (4P12O)
669 
670           Board setup code must specify the model to use, and the start
671           number for these GPIOs.
672 
673 config GPIO_MAX732X_IRQ
674         bool "Interrupt controller support for MAX732x"
675         depends on GPIO_MAX732X=y
676         select GPIOLIB_IRQCHIP
677         help
678           Say yes here to enable the max732x to be used as an interrupt
679           controller. It requires the driver to be built in the kernel.
680 
681 config GPIO_MC9S08DZ60
682         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
683         depends on I2C=y && MACH_MX35_3DS
684         help
685           Select this to enable the MC9S08DZ60 GPIO driver
686 
687 config GPIO_PCA953X
688         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
689         help
690           Say yes here to provide access to several register-oriented
691           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
692           models include:
693 
694           4 bits:       pca9536, pca9537
695 
696           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
697                         pca9556, pca9557, pca9574, tca6408, xra1202
698 
699           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
700                         tca6416
701 
702           24 bits:      tca6424
703 
704           40 bits:      pca9505, pca9698
705 
706 config GPIO_PCA953X_IRQ
707         bool "Interrupt controller support for PCA953x"
708         depends on GPIO_PCA953X=y
709         select GPIOLIB_IRQCHIP
710         help
711           Say yes here to enable the pca953x to be used as an interrupt
712           controller. It requires the driver to be built in the kernel.
713 
714 config GPIO_PCF857X
715         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
716         select GPIOLIB_IRQCHIP
717         select IRQ_DOMAIN
718         help
719           Say yes here to provide access to most "quasi-bidirectional" I2C
720           GPIO expanders used for additional digital outputs or inputs.
721           Most of these parts are from NXP, though TI is a second source for
722           some of them.  Compatible models include:
723 
724           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
725                     pca9670, pca9672, pca9674, pca9674a,
726                     max7328, max7329
727 
728           16 bits:  pcf8575, pcf8575c, pca8575,
729                     pca9671, pca9673, pca9675
730 
731           Your board setup code will need to declare the expanders in
732           use, and assign numbers to the GPIOs they expose.  Those GPIOs
733           can then be used from drivers and other kernel code, just like
734           other GPIOs, but only accessible from task contexts.
735 
736           This driver provides an in-kernel interface to those GPIOs using
737           platform-neutral GPIO calls.
738 
739 config GPIO_SX150X
740         bool "Semtech SX150x I2C GPIO expander"
741         depends on I2C=y
742         select GPIOLIB_IRQCHIP
743         default n
744         help
745           Say yes here to provide support for Semtech SX150-series I2C
746           GPIO expanders. Compatible models include:
747 
748           8 bits:  sx1508q
749           16 bits: sx1509q
750 
751 config GPIO_TPIC2810
752         tristate "TPIC2810 8-Bit I2C GPO expander"
753         help
754           Say yes here to enable the GPO driver for the TI TPIC2810 chip.
755 
756           To compile this driver as a module, choose M here: the module will
757           be called gpio-tpic2810.
758 
759 endmenu
760 
761 menu "MFD GPIO expanders"
762 
763 config GPIO_ADP5520
764         tristate "GPIO Support for ADP5520 PMIC"
765         depends on PMIC_ADP5520
766         help
767           This option enables support for on-chip GPIO found
768           on Analog Devices ADP5520 PMICs.
769 
770 config GPIO_ARIZONA
771         tristate "Wolfson Microelectronics Arizona class devices"
772         depends on MFD_ARIZONA
773         help
774           Support for GPIOs on Wolfson Arizona class devices.
775 
776 config GPIO_CRYSTAL_COVE
777         tristate "GPIO support for Crystal Cove PMIC"
778         depends on INTEL_SOC_PMIC
779         select GPIOLIB_IRQCHIP
780         help
781           Support for GPIO pins on Crystal Cove PMIC.
782 
783           Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
784           inside.
785 
786           This driver can also be built as a module. If so, the module will be
787           called gpio-crystalcove.
788 
789 config GPIO_CS5535
790         tristate "AMD CS5535/CS5536 GPIO support"
791         depends on MFD_CS5535
792         help
793           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
794           can be used for quite a number of things.  The CS5535/6 is found on
795           AMD Geode and Lemote Yeeloong devices.
796 
797           If unsure, say N.
798 
799 config GPIO_DA9052
800         tristate "Dialog DA9052 GPIO"
801         depends on PMIC_DA9052
802         help
803           Say yes here to enable the GPIO driver for the DA9052 chip.
804 
805 config GPIO_DA9055
806         tristate "Dialog Semiconductor DA9055 GPIO"
807         depends on MFD_DA9055
808         help
809           Say yes here to enable the GPIO driver for the DA9055 chip.
810 
811           The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
812           be controller by this driver.
813 
814           If driver is built as a module it will be called gpio-da9055.
815 
816 config GPIO_DLN2
817         tristate "Diolan DLN2 GPIO support"
818         depends on MFD_DLN2
819         select GPIOLIB_IRQCHIP
820 
821         help
822           Select this option to enable GPIO driver for the Diolan DLN2
823           board.
824 
825           This driver can also be built as a module. If so, the module
826           will be called gpio-dln2.
827 
828 config GPIO_JANZ_TTL
829         tristate "Janz VMOD-TTL Digital IO Module"
830         depends on MFD_JANZ_CMODIO
831         help
832           This enables support for the Janz VMOD-TTL Digital IO module.
833           This driver provides support for driving the pins in output
834           mode only. Input mode is not supported.
835 
836 config GPIO_KEMPLD
837         tristate "Kontron ETX / COMexpress GPIO"
838         depends on MFD_KEMPLD
839         help
840           This enables support for the PLD GPIO interface on some Kontron ETX
841           and COMexpress (ETXexpress) modules.
842 
843           This driver can also be built as a module. If so, the module will be
844           called gpio-kempld.
845 
846 config GPIO_LP3943
847         tristate "TI/National Semiconductor LP3943 GPIO expander"
848         depends on MFD_LP3943
849         help
850           GPIO driver for LP3943 MFD.
851           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
852           Open drain outputs are required for this usage.
853 
854 config GPIO_MSIC
855         bool "Intel MSIC mixed signal gpio support"
856         depends on MFD_INTEL_MSIC
857         help
858           Enable support for GPIO on intel MSIC controllers found in
859           intel MID devices
860 
861 config GPIO_PALMAS
862         bool "TI PALMAS series PMICs GPIO"
863         depends on MFD_PALMAS
864         help
865           Select this option to enable GPIO driver for the TI PALMAS
866           series chip family.
867 
868 config GPIO_RC5T583
869         bool "RICOH RC5T583 GPIO"
870         depends on MFD_RC5T583
871         help
872           Select this option to enable GPIO driver for the Ricoh RC5T583
873           chip family.
874           This driver provides the support for driving/reading the gpio pins
875           of RC5T583 device through standard gpio library.
876 
877 config GPIO_STMPE
878         bool "STMPE GPIOs"
879         depends on MFD_STMPE
880         depends on OF_GPIO
881         select GPIOLIB_IRQCHIP
882         help
883           This enables support for the GPIOs found on the STMPE I/O
884           Expanders.
885 
886 config GPIO_TC3589X
887         bool "TC3589X GPIOs"
888         depends on MFD_TC3589X
889         depends on OF_GPIO
890         select GPIOLIB_IRQCHIP
891         help
892           This enables support for the GPIOs found on the TC3589X
893           I/O Expander.
894 
895 config GPIO_TIMBERDALE
896         bool "Support for timberdale GPIO IP"
897         depends on MFD_TIMBERDALE
898         ---help---
899         Add support for the GPIO IP in the timberdale FPGA.
900 
901 config GPIO_TPS65086
902         tristate "TI TPS65086 GPO"
903         depends on MFD_TPS65086
904         help
905           This driver supports the GPO on TI TPS65086x PMICs.
906 
907 config GPIO_TPS65218
908         tristate "TPS65218 GPIO"
909         depends on MFD_TPS65218
910         help
911           Select this option to enable GPIO driver for the TPS65218
912           chip family.
913 
914 config GPIO_TPS6586X
915         bool "TPS6586X GPIO"
916         depends on MFD_TPS6586X
917         help
918           Select this option to enable GPIO driver for the TPS6586X
919           chip family.
920 
921 config GPIO_TPS65910
922         bool "TPS65910 GPIO"
923         depends on MFD_TPS65910
924         help
925           Select this option to enable GPIO driver for the TPS65910
926           chip family.
927 
928 config GPIO_TPS65912
929         tristate "TI TPS65912 GPIO"
930         depends on MFD_TPS65912
931         help
932           This driver supports TPS65912 gpio chip
933 
934 config GPIO_TWL4030
935         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
936         depends on TWL4030_CORE
937         help
938           Say yes here to access the GPIO signals of various multi-function
939           power management chips from Texas Instruments.
940 
941 config GPIO_TWL6040
942         tristate "TWL6040 GPO"
943         depends on TWL6040_CORE
944         help
945           Say yes here to access the GPO signals of twl6040
946           audio chip from Texas Instruments.
947 
948 config GPIO_UCB1400
949         tristate "Philips UCB1400 GPIO"
950         depends on UCB1400_CORE
951         help
952           This enables support for the Philips UCB1400 GPIO pins.
953           The UCB1400 is an AC97 audio codec.
954 
955 config GPIO_WM831X
956         tristate "WM831x GPIOs"
957         depends on MFD_WM831X
958         help
959           Say yes here to access the GPIO signals of WM831x power management
960           chips from Wolfson Microelectronics.
961 
962 config GPIO_WM8350
963         tristate "WM8350 GPIOs"
964         depends on MFD_WM8350
965         help
966           Say yes here to access the GPIO signals of WM8350 power management
967           chips from Wolfson Microelectronics.
968 
969 config GPIO_WM8994
970         tristate "WM8994 GPIOs"
971         depends on MFD_WM8994
972         help
973           Say yes here to access the GPIO signals of WM8994 audio hub
974           CODECs from Wolfson Microelectronics.
975 
976 endmenu
977 
978 menu "PCI GPIO expanders"
979         depends on PCI
980 
981 config GPIO_AMD8111
982         tristate "AMD 8111 GPIO driver"
983         help
984           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
985 
986           Note, that usually system firmware/ACPI handles GPIO pins on their
987           own and users might easily break their systems with uncarefull usage
988           of this driver!
989 
990           If unsure, say N
991 
992 config GPIO_BT8XX
993         tristate "BT8XX GPIO abuser"
994         depends on VIDEO_BT848=n
995         help
996           The BT8xx frame grabber chip has 24 GPIO pins that can be abused
997           as a cheap PCI GPIO card.
998 
999           This chip can be found on Miro, Hauppauge and STB TV-cards.
1000 
1001           The card needs to be physically altered for using it as a
1002           GPIO card. For more information on how to build a GPIO card
1003           from a BT8xx TV card, see the documentation file at
1004           Documentation/bt8xxgpio.txt
1005 
1006           If unsure, say N.
1007 
1008 config GPIO_INTEL_MID
1009         bool "Intel Mid GPIO support"
1010         depends on X86
1011         select GPIOLIB_IRQCHIP
1012         help
1013           Say Y here to support Intel Mid GPIO.
1014 
1015 config GPIO_ML_IOH
1016         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1017         select GENERIC_IRQ_CHIP
1018         help
1019           ML7213 is companion chip for Intel Atom E6xx series.
1020           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1021           Hub) which is for IVI(In-Vehicle Infotainment) use.
1022           This driver can access the IOH's GPIO device.
1023 
1024 config GPIO_PCH
1025         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1026         depends on X86_32 || MIPS || COMPILE_TEST
1027         select GENERIC_IRQ_CHIP
1028         help
1029           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1030           which is an IOH(Input/Output Hub) for x86 embedded processor.
1031           This driver can access PCH GPIO device.
1032 
1033           This driver also can be used for LAPIS Semiconductor IOH(Input/
1034           Output Hub), ML7223 and ML7831.
1035           ML7223 IOH is for MP(Media Phone) use.
1036           ML7831 IOH is for general purpose use.
1037           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1038           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1039 
1040 config GPIO_RDC321X
1041         tristate "RDC R-321x GPIO support"
1042         select MFD_CORE
1043         select MFD_RDC321X
1044         help
1045           Support for the RDC R321x SoC GPIOs over southbridge
1046           PCI configuration space.
1047 
1048 config GPIO_SODAVILLE
1049         bool "Intel Sodaville GPIO support"
1050         depends on X86 && OF
1051         select GPIO_GENERIC
1052         select GENERIC_IRQ_CHIP
1053         help
1054           Say Y here to support Intel Sodaville GPIO.
1055 
1056 endmenu
1057 
1058 menu "SPI GPIO expanders"
1059         depends on SPI_MASTER
1060 
1061 config GPIO_74X164
1062         tristate "74x164 serial-in/parallel-out 8-bits shift register"
1063         depends on OF
1064         help
1065           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1066           shift registers. This driver can be used to provide access
1067           to more gpio outputs.
1068 
1069 config GPIO_MAX7301
1070         tristate "Maxim MAX7301 GPIO expander"
1071         select GPIO_MAX730X
1072         help
1073           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1074 
1075 config GPIO_MC33880
1076         tristate "Freescale MC33880 high-side/low-side switch"
1077         help
1078           SPI driver for Freescale MC33880 high-side/low-side switch.
1079           This provides GPIO interface supporting inputs and outputs.
1080 
1081 config GPIO_PISOSR
1082         tristate "Generic parallel-in/serial-out shift register"
1083         help
1084           GPIO driver for SPI compatible parallel-in/serial-out shift
1085           registers. These are input only devices.
1086 
1087 endmenu
1088 
1089 menu "SPI or I2C GPIO expanders"
1090         depends on (SPI_MASTER && !I2C) || I2C
1091 
1092 config GPIO_MCP23S08
1093         tristate "Microchip MCP23xxx I/O expander"
1094         help
1095           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
1096           I/O expanders.
1097           This provides a GPIO interface supporting inputs and outputs.
1098           The I2C versions of the chips can be used as interrupt-controller.
1099 
1100 endmenu
1101 
1102 menu "USB GPIO expanders"
1103         depends on USB
1104 
1105 config GPIO_VIPERBOARD
1106         tristate "Viperboard GPIO a & b support"
1107         depends on MFD_VIPERBOARD
1108         help
1109           Say yes here to access the GPIO signals of Nano River
1110           Technologies Viperboard. There are two GPIO chips on the
1111           board: gpioa and gpiob.
1112           See viperboard API specification and Nano
1113           River Tech's viperboard.h for detailed meaning
1114           of the module parameters.
1115 
1116 endmenu
1117 
1118 endif

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