2 # GPIO infrastructure and drivers
5 config ARCH_HAVE_CUSTOM_GPIO_H
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
13 config ARCH_WANT_OPTIONAL_GPIOLIB
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.
23 config ARCH_REQUIRE_GPIOLIB
27 Platforms select gpiolib if they use this infrastructure
28 for all their GPIOs, usually starting with ones integrated
30 Selecting this from the architecture code will cause the gpiolib
31 code to always get built in.
37 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
40 This enables GPIO support through the generic GPIO library.
41 You only need to enable this, if you also want to enable
42 one or more of the GPIO drivers below.
53 bool "Debug GPIO calls"
54 depends on DEBUG_KERNEL
56 Say Y here to add some extra checks and diagnostics to GPIO calls.
57 These checks help ensure that GPIOs have been properly initialized
58 before they are used, and that sleeping calls are not made from
59 non-sleeping contexts. They can make bitbanged serial protocols
60 slower. The diagnostics help catch the type of setup errors
61 that are most common when setting up new platforms or boards.
64 bool "/sys/class/gpio/... (sysfs interface)"
65 depends on SYSFS && EXPERIMENTAL
67 Say Y here to add a sysfs interface for GPIOs.
69 This is mostly useful to work around omissions in a system's
70 kernel support. Those are common in custom and semicustom
71 hardware assembled using standard kernels with a minimum of
72 custom patches. In those cases, userspace code may import
73 a given GPIO from the kernel, if no kernel driver requested it.
75 Kernel drivers may also request that a particular GPIO be
76 exported to userspace; this can be useful when debugging.
81 # put drivers in the right section, in alphabetical order
84 tristate "Dialog DA9052 GPIO"
85 depends on PMIC_DA9052
87 Say yes here to enable the GPIO driver for the DA9052 chip.
90 tristate "Dialog Semiconductor DA9055 GPIO"
93 Say yes here to enable the GPIO driver for the DA9055 chip.
95 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
96 be controller by this driver.
98 If driver is built as a module it will be called gpio-da9055.
103 comment "Memory mapped GPIO drivers:"
107 depends on ARCH_CLPS711X
109 config GPIO_GENERIC_PLATFORM
110 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
113 Say yes here to support basic platform_device memory-mapped GPIO controllers.
116 tristate "IT8761E GPIO support"
117 depends on X86 # unconditional access to IO space.
119 Say yes here to support GPIO functionality of IT8761E super I/O chip.
122 tristate "Emma Mobile GPIO"
125 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
129 depends on ARCH_EP93XX
132 config GPIO_MM_LANTIQ
133 bool "Lantiq Memory mapped GPIOs"
134 depends on LANTIQ && SOC_XWAY
136 This enables support for memory mapped GPIOs on the External Bus Unit
137 (EBU) found on Lantiq SoCs. The gpios are output only as they are
138 created by attaching a 16bit latch to the bus.
142 depends on PPC_MPC52xx
145 bool "MPC512x/MPC8xxx GPIO support"
146 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
147 FSL_SOC_BOOKE || PPC_86xx
149 Say Y here if you're going to use hardware that connects to the
150 MPC512x/831x/834x/837x/8572/8610 GPIOs.
153 tristate "Qualcomm MSM GPIO v1"
154 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
156 Say yes here to support the GPIO interface on ARM v6 based
157 Qualcomm MSM chips. Most of the pins on the MSM can be
158 selected for GPIO, and are controlled by this driver.
161 tristate "Qualcomm MSM GPIO v2"
162 depends on GPIOLIB && ARCH_MSM
164 Say yes here to support the GPIO interface on ARM v7 based
165 Qualcomm MSM chips. Most of the pins on the MSM can be
166 selected for GPIO, and are controlled by this driver.
170 depends on ARCH_MVEBU
172 select GENERIC_IRQ_CHIP
178 select GENERIC_IRQ_CHIP
184 select GENERIC_IRQ_CHIP
187 bool "PrimeCell PL061 GPIO support"
189 select GENERIC_IRQ_CHIP
191 Say yes here to support the PrimeCell PL061 GPIO device
194 bool "PXA GPIO support"
195 depends on ARCH_PXA || ARCH_MMP
197 Say yes here to support the PXA GPIO device
199 config GPIO_SPEAR_SPICS
200 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
201 depends on PLAT_SPEAR
202 select GENERIC_IRQ_CHIP
204 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
207 bool "STA2x11/ConneXt GPIO support"
208 depends on MFD_STA2X11
209 select GENERIC_IRQ_CHIP
211 Say yes here to support the STA2x11/ConneXt GPIO device.
212 The GPIO module has 128 GPIO pins with alternate functions.
215 bool "VIA/Wondermedia SoC GPIO Support"
216 depends on ARCH_VT8500
218 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
221 bool "Xilinx GPIO support"
222 depends on PPC_OF || MICROBLAZE
224 Say yes here to support the Xilinx FPGA GPIO device
227 tristate "NEC VR4100 series General-purpose I/O Uint support"
228 depends on CPU_VR41XX
230 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
233 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
234 depends on PCI && X86
238 Say yes here to support GPIO interface on Intel Poulsbo SCH,
239 Intel Tunnel Creek processor or Intel Centerton processor.
240 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
241 powered by the core power rail and are turned off during sleep
242 modes (S3 and higher). The remaining four GPIOs are powered by
243 the Intel SCH suspend power supply. These GPIOs remain
244 active during S3. The suspend powered GPIOs can be used to wake the
245 system from the Suspend-to-RAM state.
246 The Intel Tunnel Creek processor has 5 GPIOs powered by the
247 core power rail and 9 from suspend power supply.
248 The Intel Centerton processor has a total of 30 GPIO pins.
249 Twenty-one are powered by the core power rail and 9 from the
250 suspend power supply.
253 tristate "Intel ICH GPIO"
254 depends on PCI && X86
258 Say yes here to support the GPIO functionality of a number of Intel
259 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
260 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
261 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
266 tristate "VIA VX855/VX875 GPIO"
271 Support access to the VX855/VX875 GPIO lines through the gpio library.
273 This driver provides common support for accessing the device,
274 additional drivers must be enabled in order to use the
275 functionality of the device.
278 bool "GE FPGA based GPIO"
281 Support for common GPIO functionality provided on some GE Single Board
284 This driver provides basic support (configure as input or output, read
285 and write pin state) for GPIO implemented in a number of GE single
288 comment "I2C GPIO expanders:"
291 tristate "Wolfson Microelectronics Arizona class devices"
292 depends on MFD_ARIZONA
294 Support for GPIOs on Wolfson Arizona class devices.
297 tristate "Maxim MAX7300 GPIO expander"
301 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
304 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
307 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
308 Port Expanders. Each IO port on these chips has a fixed role of
309 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
310 Input and Output (designed by 'P'). The combinations are listed
313 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
314 max7322 (4I4O), max7323 (4P4O)
316 16 bits: max7324 (8I8O), max7325 (8P8O),
317 max7326 (4I12O), max7327 (4P12O)
319 Board setup code must specify the model to use, and the start
320 number for these GPIOs.
322 config GPIO_MAX732X_IRQ
323 bool "Interrupt controller support for MAX732x"
324 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
326 Say yes here to enable the max732x to be used as an interrupt
327 controller. It requires the driver to be built in the kernel.
329 config GPIO_MC9S08DZ60
330 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
331 depends on I2C=y && MACH_MX35_3DS
333 Select this to enable the MC9S08DZ60 GPIO driver
336 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
339 Say yes here to provide access to several register-oriented
340 SMBus I/O expanders, made mostly by NXP or TI. Compatible
343 4 bits: pca9536, pca9537
345 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
346 pca9556, pca9557, pca9574, tca6408
348 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
351 config GPIO_PCA953X_IRQ
352 bool "Interrupt controller support for PCA953x"
353 depends on GPIO_PCA953X=y
355 Say yes here to enable the pca953x to be used as an interrupt
356 controller. It requires the driver to be built in the kernel.
359 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
363 Say yes here to provide access to most "quasi-bidirectional" I2C
364 GPIO expanders used for additional digital outputs or inputs.
365 Most of these parts are from NXP, though TI is a second source for
366 some of them. Compatible models include:
368 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
369 pca9670, pca9672, pca9674, pca9674a,
372 16 bits: pcf8575, pcf8575c, pca8575,
373 pca9671, pca9673, pca9675
375 Your board setup code will need to declare the expanders in
376 use, and assign numbers to the GPIOs they expose. Those GPIOs
377 can then be used from drivers and other kernel code, just like
378 other GPIOs, but only accessible from task contexts.
380 This driver provides an in-kernel interface to those GPIOs using
381 platform-neutral GPIO calls.
384 bool "RICOH RC5T583 GPIO"
385 depends on MFD_RC5T583
387 Select this option to enable GPIO driver for the Ricoh RC5T583
389 This driver provides the support for driving/reading the gpio pins
390 of RC5T583 device through standard gpio library.
393 bool "Semtech SX150x I2C GPIO expander"
397 Say yes here to provide support for Semtech SX150-series I2C
398 GPIO expanders. Compatible models include:
407 This enables support for the GPIOs found on the STMPE I/O
411 bool "XWAY STP GPIOs"
414 This enables support for the Serial To Parallel (STP) unit found on
415 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
416 that can be up to 24 bit. This peripheral is aimed at driving leds.
417 Some of the gpios/leds can be auto updated by the soc with dsl and
422 depends on MFD_TC3589X
424 This enables support for the GPIOs found on the TC3589X
428 tristate "TI TPS65912 GPIO"
429 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
431 This driver supports TPS65912 gpio chip
434 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
435 depends on TWL4030_CORE
437 Say yes here to access the GPIO signals of various multi-function
438 power management chips from Texas Instruments.
441 tristate "TWL6040 GPO"
442 depends on TWL6040_CORE
444 Say yes here to access the GPO signals of twl6040
445 audio chip from Texas Instruments.
448 tristate "WM831x GPIOs"
449 depends on MFD_WM831X
451 Say yes here to access the GPIO signals of WM831x power management
452 chips from Wolfson Microelectronics.
455 tristate "WM8350 GPIOs"
456 depends on MFD_WM8350
458 Say yes here to access the GPIO signals of WM8350 power management
459 chips from Wolfson Microelectronics.
462 tristate "WM8994 GPIOs"
463 depends on MFD_WM8994
465 Say yes here to access the GPIO signals of WM8994 audio hub
466 CODECs from Wolfson Microelectronics.
469 tristate "GPIO Support for ADP5520 PMIC"
470 depends on PMIC_ADP5520
472 This option enables support for on-chip GPIO found
473 on Analog Devices ADP5520 PMICs.
476 tristate "ADP5588 I2C GPIO expander"
479 This option enables support for 18 GPIOs found
480 on Analog Devices ADP5588 GPIO Expanders.
482 config GPIO_ADP5588_IRQ
483 bool "Interrupt controller support for ADP5588"
484 depends on GPIO_ADP5588=y
486 Say yes here to enable the adp5588 to be used as an interrupt
487 controller. It requires the driver to be built in the kernel.
490 tristate "Avionic Design N-bit GPIO expander"
491 depends on I2C && OF_GPIO
493 This option enables support for N GPIOs found on Avionic Design
494 I2C GPIO expanders. The register space will be extended by powers
495 of two, so the controller will need to accomodate for that. For
496 example: if a controller provides 48 pins, 6 registers will be
497 enough to represent all pins, but the driver will assume a
498 register layout for 64 pins (8 registers).
500 comment "PCI GPIO expanders:"
503 tristate "AMD CS5535/CS5536 GPIO support"
504 depends on PCI && X86 && MFD_CS5535
506 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
507 can be used for quite a number of things. The CS5535/6 is found on
508 AMD Geode and Lemote Yeeloong devices.
513 tristate "BT8XX GPIO abuser"
514 depends on PCI && VIDEO_BT848=n
516 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
517 as a cheap PCI GPIO card.
519 This chip can be found on Miro, Hauppauge and STB TV-cards.
521 The card needs to be physically altered for using it as a
522 GPIO card. For more information on how to build a GPIO card
523 from a BT8xx TV card, see the documentation file at
524 Documentation/bt8xxgpio.txt
529 tristate "AMD 8111 GPIO driver"
532 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
534 Note, that usually system firmware/ACPI handles GPIO pins on their
535 own and users might easily break their systems with uncarefull usage
541 bool "Intel Langwell/Penwell GPIO support"
542 depends on PCI && X86
545 Say Y here to support Intel Langwell/Penwell GPIO.
548 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
549 depends on PCI && X86
550 select GENERIC_IRQ_CHIP
552 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
553 which is an IOH(Input/Output Hub) for x86 embedded processor.
554 This driver can access PCH GPIO device.
556 This driver also can be used for LAPIS Semiconductor IOH(Input/
557 Output Hub), ML7223 and ML7831.
558 ML7223 IOH is for MP(Media Phone) use.
559 ML7831 IOH is for general purpose use.
560 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
561 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
564 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
566 select GENERIC_IRQ_CHIP
568 ML7213 is companion chip for Intel Atom E6xx series.
569 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
570 Hub) which is for IVI(In-Vehicle Infotainment) use.
571 This driver can access the IOH's GPIO device.
573 config GPIO_SODAVILLE
574 bool "Intel Sodaville GPIO support"
575 depends on X86 && PCI && OF
577 select GENERIC_IRQ_CHIP
579 Say Y here to support Intel Sodaville GPIO.
581 config GPIO_TIMBERDALE
582 bool "Support for timberdale GPIO IP"
583 depends on MFD_TIMBERDALE && HAS_IOMEM
585 Add support for the GPIO IP in the timberdale FPGA.
588 tristate "RDC R-321x GPIO support"
593 Support for the RDC R321x SoC GPIOs over southbridge
594 PCI configuration space.
596 comment "SPI GPIO expanders:"
599 tristate "Maxim MAX7301 GPIO expander"
600 depends on SPI_MASTER
603 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
606 tristate "Microchip MCP23xxx I/O expander"
607 depends on SPI_MASTER || I2C
609 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
611 This provides a GPIO interface supporting inputs and outputs.
614 tristate "Freescale MC33880 high-side/low-side switch"
615 depends on SPI_MASTER
617 SPI driver for Freescale MC33880 high-side/low-side switch.
618 This provides GPIO interface supporting inputs and outputs.
621 tristate "74x164 serial-in/parallel-out 8-bits shift register"
622 depends on SPI_MASTER
624 Platform driver for 74x164 compatible serial-in/parallel-out
625 8-outputs shift registers. This driver can be used to provide access
626 to more gpio outputs.
628 comment "AC97 GPIO expanders:"
631 bool "Philips UCB1400 GPIO"
632 depends on UCB1400_CORE
634 This enables support for the Philips UCB1400 GPIO pins.
635 The UCB1400 is an AC97 audio codec.
637 comment "MODULbus GPIO expanders:"
640 tristate "Janz VMOD-TTL Digital IO Module"
641 depends on MFD_JANZ_CMODIO
643 This enables support for the Janz VMOD-TTL Digital IO module.
644 This driver provides support for driving the pins in output
645 mode only. Input mode is not supported.
648 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
649 depends on AB8500_CORE && BROKEN
651 Select this to enable the AB8500 IC GPIO driver
655 depends on MFD_TPS6586X
657 Select this option to enable GPIO driver for the TPS6586X
662 depends on MFD_TPS65910
664 Select this option to enable GPIO driver for the TPS65910
668 bool "Intel MSIC mixed signal gpio support"
669 depends on MFD_INTEL_MSIC
671 Enable support for GPIO on intel MSIC controllers found in