Version:  2.0.40 2.2.26 2.4.37 3.0 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

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_XTENSA
344         bool "Xtensa GPIO32 support"
345         depends on XTENSA
346         depends on HAVE_XTENSA_GPIO32
347         depends on !SMP
348         help
349           Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
350           and EXPSTATE (output) ports
351 
352 config GPIO_VR41XX
353         tristate "NEC VR4100 series General-purpose I/O Uint support"
354         depends on CPU_VR41XX
355         help
356           Say yes here to support the NEC VR4100 series General-purpose I/O Uint
357 
358 config GPIO_SCH
359         tristate "Intel SCH/TunnelCreek/Centerton GPIO"
360         depends on PCI && X86
361         select MFD_CORE
362         select LPC_SCH
363         help
364           Say yes here to support GPIO interface on Intel Poulsbo SCH,
365           Intel Tunnel Creek processor or Intel Centerton processor.
366           The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
367           powered by the core power rail and are turned off during sleep
368           modes (S3 and higher). The remaining four GPIOs are powered by
369           the Intel SCH suspend power supply. These GPIOs remain
370           active during S3. The suspend powered GPIOs can be used to wake the
371           system from the Suspend-to-RAM state.
372           The Intel Tunnel Creek processor has 5 GPIOs powered by the
373           core power rail and 9 from suspend power supply.
374           The Intel Centerton processor has a total of 30 GPIO pins.
375           Twenty-one are powered by the core power rail and 9 from the
376           suspend power supply.
377 
378 config GPIO_ICH
379         tristate "Intel ICH GPIO"
380         depends on PCI && X86
381         select MFD_CORE
382         select LPC_ICH
383         help
384           Say yes here to support the GPIO functionality of a number of Intel
385           ICH-based chipsets.  Currently supported devices: ICH6, ICH7, ICH8
386           ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
387           Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
388 
389           If unsure, say N.
390 
391 config GPIO_IOP
392         tristate "Intel IOP GPIO"
393         depends on ARM && (ARCH_IOP32X || ARCH_IOP33X)
394         help
395           Say yes here to support the GPIO functionality of a number of Intel
396           IOP32X or IOP33X.
397 
398           If unsure, say N.
399 
400 config GPIO_VX855
401         tristate "VIA VX855/VX875 GPIO"
402         depends on PCI
403         select MFD_CORE
404         select MFD_VX855
405         help
406           Support access to the VX855/VX875 GPIO lines through the gpio library.
407 
408           This driver provides common support for accessing the device,
409           additional drivers must be enabled in order to use the
410           functionality of the device.
411 
412 config GPIO_GE_FPGA
413         bool "GE FPGA based GPIO"
414         depends on GE_FPGA
415         help
416           Support for common GPIO functionality provided on some GE Single Board
417           Computers.
418 
419           This driver provides basic support (configure as input or output, read
420           and write pin state) for GPIO implemented in a number of GE single
421           board computers.
422 
423 config GPIO_LYNXPOINT
424         tristate "Intel Lynxpoint GPIO support"
425         depends on ACPI && X86
426         select IRQ_DOMAIN
427         help
428           driver for GPIO functionality on Intel Lynxpoint PCH chipset
429           Requires ACPI device enumeration code to set up a platform device.
430 
431 config GPIO_GRGPIO
432         tristate "Aeroflex Gaisler GRGPIO support"
433         depends on OF
434         select GPIO_GENERIC
435         select IRQ_DOMAIN
436         help
437           Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
438           VHDL IP core library.
439 
440 config GPIO_TB10X
441         bool
442         select GENERIC_IRQ_CHIP
443         select OF_GPIO
444 
445 comment "I2C GPIO expanders:"
446 
447 config GPIO_ARIZONA
448         tristate "Wolfson Microelectronics Arizona class devices"
449         depends on MFD_ARIZONA
450         help
451           Support for GPIOs on Wolfson Arizona class devices.
452 
453 config GPIO_LP3943
454         tristate "TI/National Semiconductor LP3943 GPIO expander"
455         depends on MFD_LP3943
456         help
457           GPIO driver for LP3943 MFD.
458           LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
459           Open drain outputs are required for this usage.
460 
461 config GPIO_MAX7300
462         tristate "Maxim MAX7300 GPIO expander"
463         depends on I2C
464         select GPIO_MAX730X
465         help
466           GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
467 
468 config GPIO_MAX732X
469         tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
470         depends on I2C
471         help
472           Say yes here to support the MAX7319, MAX7320-7327 series of I2C
473           Port Expanders. Each IO port on these chips has a fixed role of
474           Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
475           Input and Output (designed by 'P'). The combinations are listed
476           below:
477 
478           8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
479                         max7322 (4I4O), max7323 (4P4O)
480 
481           16 bits:      max7324 (8I8O), max7325 (8P8O),
482                         max7326 (4I12O), max7327 (4P12O)
483 
484           Board setup code must specify the model to use, and the start
485           number for these GPIOs.
486 
487 config GPIO_MAX732X_IRQ
488         bool "Interrupt controller support for MAX732x"
489         depends on GPIO_MAX732X=y
490         help
491           Say yes here to enable the max732x to be used as an interrupt
492           controller. It requires the driver to be built in the kernel.
493 
494 config GPIO_MC9S08DZ60
495         bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
496         depends on I2C=y && MACH_MX35_3DS
497         help
498           Select this to enable the MC9S08DZ60 GPIO driver
499 
500 config GPIO_PCA953X
501         tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
502         depends on I2C
503         help
504           Say yes here to provide access to several register-oriented
505           SMBus I/O expanders, made mostly by NXP or TI.  Compatible
506           models include:
507 
508           4 bits:       pca9536, pca9537
509 
510           8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
511                         pca9556, pca9557, pca9574, tca6408, xra1202
512 
513           16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
514                         tca6416
515 
516           24 bits:      tca6424
517 
518           40 bits:      pca9505, pca9698
519 
520 config GPIO_PCA953X_IRQ
521         bool "Interrupt controller support for PCA953x"
522         depends on GPIO_PCA953X=y
523         select GPIOLIB_IRQCHIP
524         help
525           Say yes here to enable the pca953x to be used as an interrupt
526           controller. It requires the driver to be built in the kernel.
527 
528 config GPIO_PCF857X
529         tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
530         depends on I2C
531         select IRQ_DOMAIN
532         help
533           Say yes here to provide access to most "quasi-bidirectional" I2C
534           GPIO expanders used for additional digital outputs or inputs.
535           Most of these parts are from NXP, though TI is a second source for
536           some of them.  Compatible models include:
537 
538           8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
539                     pca9670, pca9672, pca9674, pca9674a,
540                     max7328, max7329
541 
542           16 bits:  pcf8575, pcf8575c, pca8575,
543                     pca9671, pca9673, pca9675
544 
545           Your board setup code will need to declare the expanders in
546           use, and assign numbers to the GPIOs they expose.  Those GPIOs
547           can then be used from drivers and other kernel code, just like
548           other GPIOs, but only accessible from task contexts.
549 
550           This driver provides an in-kernel interface to those GPIOs using
551           platform-neutral GPIO calls.
552 
553 config GPIO_RC5T583
554         bool "RICOH RC5T583 GPIO"
555         depends on MFD_RC5T583
556         help
557           Select this option to enable GPIO driver for the Ricoh RC5T583
558           chip family.
559           This driver provides the support for driving/reading the gpio pins
560           of RC5T583 device through standard gpio library.
561 
562 config GPIO_SX150X
563         bool "Semtech SX150x I2C GPIO expander"
564         depends on I2C=y
565         default n
566         help
567           Say yes here to provide support for Semtech SX150-series I2C
568           GPIO expanders. Compatible models include:
569 
570           8 bits:  sx1508q
571           16 bits: sx1509q
572 
573 config GPIO_STMPE
574         bool "STMPE GPIOs"
575         depends on MFD_STMPE
576         help
577           This enables support for the GPIOs found on the STMPE I/O
578           Expanders.
579 
580 config GPIO_STP_XWAY
581         bool "XWAY STP GPIOs"
582         depends on SOC_XWAY
583         help
584           This enables support for the Serial To Parallel (STP) unit found on
585           XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
586           that can be up to 24 bit. This peripheral is aimed at driving leds.
587           Some of the gpios/leds can be auto updated by the soc with dsl and
588           phy status.
589 
590 config GPIO_TC3589X
591         bool "TC3589X GPIOs"
592         depends on MFD_TC3589X
593         select GPIOLIB_IRQCHIP
594         help
595           This enables support for the GPIOs found on the TC3589X
596           I/O Expander.
597 
598 config GPIO_TPS65912
599         tristate "TI TPS65912 GPIO"
600         depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
601         help
602           This driver supports TPS65912 gpio chip
603 
604 config GPIO_TWL4030
605         tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
606         depends on TWL4030_CORE
607         help
608           Say yes here to access the GPIO signals of various multi-function
609           power management chips from Texas Instruments.
610 
611 config GPIO_TWL6040
612         tristate "TWL6040 GPO"
613         depends on TWL6040_CORE
614         help
615           Say yes here to access the GPO signals of twl6040
616           audio chip from Texas Instruments.
617 
618 config GPIO_WM831X
619         tristate "WM831x GPIOs"
620         depends on MFD_WM831X
621         help
622           Say yes here to access the GPIO signals of WM831x power management
623           chips from Wolfson Microelectronics.
624 
625 config GPIO_WM8350
626         tristate "WM8350 GPIOs"
627         depends on MFD_WM8350
628         help
629           Say yes here to access the GPIO signals of WM8350 power management
630           chips from Wolfson Microelectronics.
631 
632 config GPIO_WM8994
633         tristate "WM8994 GPIOs"
634         depends on MFD_WM8994
635         help
636           Say yes here to access the GPIO signals of WM8994 audio hub
637           CODECs from Wolfson Microelectronics.
638 
639 config GPIO_ADP5520
640         tristate "GPIO Support for ADP5520 PMIC"
641         depends on PMIC_ADP5520
642         help
643           This option enables support for on-chip GPIO found
644           on Analog Devices ADP5520 PMICs.
645 
646 config GPIO_ADP5588
647         tristate "ADP5588 I2C GPIO expander"
648         depends on I2C
649         help
650           This option enables support for 18 GPIOs found
651           on Analog Devices ADP5588 GPIO Expanders.
652 
653 config GPIO_ADP5588_IRQ
654         bool "Interrupt controller support for ADP5588"
655         depends on GPIO_ADP5588=y
656         help
657           Say yes here to enable the adp5588 to be used as an interrupt
658           controller. It requires the driver to be built in the kernel.
659 
660 config GPIO_ADNP
661         tristate "Avionic Design N-bit GPIO expander"
662         depends on I2C && OF_GPIO
663         help
664           This option enables support for N GPIOs found on Avionic Design
665           I2C GPIO expanders. The register space will be extended by powers
666           of two, so the controller will need to accommodate for that. For
667           example: if a controller provides 48 pins, 6 registers will be
668           enough to represent all pins, but the driver will assume a
669           register layout for 64 pins (8 registers).
670 
671 comment "PCI GPIO expanders:"
672 
673 config GPIO_CS5535
674         tristate "AMD CS5535/CS5536 GPIO support"
675         depends on MFD_CS5535
676         help
677           The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
678           can be used for quite a number of things.  The CS5535/6 is found on
679           AMD Geode and Lemote Yeeloong devices.
680 
681           If unsure, say N.
682 
683 config GPIO_BT8XX
684         tristate "BT8XX GPIO abuser"
685         depends on PCI && VIDEO_BT848=n
686         help
687           The BT8xx frame grabber chip has 24 GPIO pins that can be abused
688           as a cheap PCI GPIO card.
689 
690           This chip can be found on Miro, Hauppauge and STB TV-cards.
691 
692           The card needs to be physically altered for using it as a
693           GPIO card. For more information on how to build a GPIO card
694           from a BT8xx TV card, see the documentation file at
695           Documentation/bt8xxgpio.txt
696 
697           If unsure, say N.
698 
699 config GPIO_AMD8111
700         tristate "AMD 8111 GPIO driver"
701         depends on PCI
702         help
703           The AMD 8111 south bridge contains 32 GPIO pins which can be used.
704 
705           Note, that usually system firmware/ACPI handles GPIO pins on their
706           own and users might easily break their systems with uncarefull usage
707           of this driver!
708 
709           If unsure, say N
710 
711 config GPIO_INTEL_MID
712         bool "Intel Mid GPIO support"
713         depends on PCI && X86
714         select GPIOLIB_IRQCHIP
715         help
716           Say Y here to support Intel Mid GPIO.
717 
718 config GPIO_PCH
719         tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
720         depends on PCI && (X86_32 || COMPILE_TEST)
721         select GENERIC_IRQ_CHIP
722         help
723           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
724           which is an IOH(Input/Output Hub) for x86 embedded processor.
725           This driver can access PCH GPIO device.
726 
727           This driver also can be used for LAPIS Semiconductor IOH(Input/
728           Output Hub), ML7223 and ML7831.
729           ML7223 IOH is for MP(Media Phone) use.
730           ML7831 IOH is for general purpose use.
731           ML7223/ML7831 is companion chip for Intel Atom E6xx series.
732           ML7223/ML7831 is completely compatible for Intel EG20T PCH.
733 
734 config GPIO_ML_IOH
735         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
736         depends on PCI
737         select GENERIC_IRQ_CHIP
738         help
739           ML7213 is companion chip for Intel Atom E6xx series.
740           This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
741           Hub) which is for IVI(In-Vehicle Infotainment) use.
742           This driver can access the IOH's GPIO device.
743 
744 config GPIO_SODAVILLE
745         bool "Intel Sodaville GPIO support"
746         depends on X86 && PCI && OF
747         select GPIO_GENERIC
748         select GENERIC_IRQ_CHIP
749         help
750           Say Y here to support Intel Sodaville GPIO.
751 
752 config GPIO_TIMBERDALE
753         bool "Support for timberdale GPIO IP"
754         depends on MFD_TIMBERDALE
755         ---help---
756         Add support for the GPIO IP in the timberdale FPGA.
757 
758 config GPIO_RDC321X
759         tristate "RDC R-321x GPIO support"
760         depends on PCI
761         select MFD_CORE
762         select MFD_RDC321X
763         help
764           Support for the RDC R321x SoC GPIOs over southbridge
765           PCI configuration space.
766 
767 comment "SPI GPIO expanders:"
768 
769 config GPIO_MAX7301
770         tristate "Maxim MAX7301 GPIO expander"
771         depends on SPI_MASTER
772         select GPIO_MAX730X
773         help
774           GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
775 
776 config GPIO_MCP23S08
777         tristate "Microchip MCP23xxx I/O expander"
778         depends on OF_GPIO
779         depends on (SPI_MASTER && !I2C) || I2C
780         help
781           SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
782           I/O expanders.
783           This provides a GPIO interface supporting inputs and outputs.
784           The I2C versions of the chips can be used as interrupt-controller.
785 
786 config GPIO_MC33880
787         tristate "Freescale MC33880 high-side/low-side switch"
788         depends on SPI_MASTER
789         help
790           SPI driver for Freescale MC33880 high-side/low-side switch.
791           This provides GPIO interface supporting inputs and outputs.
792 
793 config GPIO_74X164
794         tristate "74x164 serial-in/parallel-out 8-bits shift register"
795         depends on SPI_MASTER && OF
796         help
797           Driver for 74x164 compatible serial-in/parallel-out 8-outputs
798           shift registers. This driver can be used to provide access
799           to more gpio outputs.
800 
801 comment "AC97 GPIO expanders:"
802 
803 config GPIO_UCB1400
804         tristate "Philips UCB1400 GPIO"
805         depends on UCB1400_CORE
806         help
807           This enables support for the Philips UCB1400 GPIO pins.
808           The UCB1400 is an AC97 audio codec.
809 
810 comment "LPC GPIO expanders:"
811 
812 config GPIO_KEMPLD
813         tristate "Kontron ETX / COMexpress GPIO"
814         depends on MFD_KEMPLD
815         help
816           This enables support for the PLD GPIO interface on some Kontron ETX
817           and COMexpress (ETXexpress) modules.
818 
819           This driver can also be built as a module. If so, the module will be
820           called gpio-kempld.
821 
822 comment "MODULbus GPIO expanders:"
823 
824 config GPIO_JANZ_TTL
825         tristate "Janz VMOD-TTL Digital IO Module"
826         depends on MFD_JANZ_CMODIO
827         help
828           This enables support for the Janz VMOD-TTL Digital IO module.
829           This driver provides support for driving the pins in output
830           mode only. Input mode is not supported.
831 
832 config GPIO_PALMAS
833         bool "TI PALMAS series PMICs GPIO"
834         depends on MFD_PALMAS
835         help
836           Select this option to enable GPIO driver for the TI PALMAS
837           series chip family.
838 
839 config GPIO_TPS6586X
840         bool "TPS6586X GPIO"
841         depends on MFD_TPS6586X
842         help
843           Select this option to enable GPIO driver for the TPS6586X
844           chip family.
845 
846 config GPIO_TPS65910
847         bool "TPS65910 GPIO"
848         depends on MFD_TPS65910
849         help
850           Select this option to enable GPIO driver for the TPS65910
851           chip family.
852 
853 config GPIO_MSIC
854         bool "Intel MSIC mixed signal gpio support"
855         depends on MFD_INTEL_MSIC
856         help
857           Enable support for GPIO on intel MSIC controllers found in
858           intel MID devices
859 
860 config GPIO_BCM_KONA
861         bool "Broadcom Kona GPIO"
862         depends on OF_GPIO
863         help
864           Turn on GPIO support for Broadcom "Kona" chips.
865 
866 comment "USB GPIO expanders:"
867 
868 config GPIO_VIPERBOARD
869         tristate "Viperboard GPIO a & b support"
870         depends on MFD_VIPERBOARD && USB
871         help
872           Say yes here to access the GPIO signals of Nano River
873           Technologies Viperboard. There are two GPIO chips on the
874           board: gpioa and gpiob.
875           See viperboard API specification and Nano
876           River Tech's viperboard.h for detailed meaning
877           of the module parameters.
878 
879 endif

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