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.
50 depends on OF && !SPARC
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.
92 comment "Memory mapped GPIO drivers:"
94 config GPIO_GENERIC_PLATFORM
95 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
98 Say yes here to support basic platform_device memory-mapped GPIO controllers.
101 tristate "IT8761E GPIO support"
102 depends on X86 # unconditional access to IO space.
104 Say yes here to support GPIO functionality of IT8761E super I/O chip.
107 tristate "Emma Mobile GPIO"
110 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
114 depends on ARCH_EP93XX
117 config GPIO_MM_LANTIQ
118 bool "Lantiq Memory mapped GPIOs"
119 depends on LANTIQ && SOC_XWAY
121 This enables support for memory mapped GPIOs on the External Bus Unit
122 (EBU) found on Lantiq SoCs. The gpios are output only as they are
123 created by attaching a 16bit latch to the bus.
127 depends on PPC_MPC52xx
130 bool "MPC512x/MPC8xxx GPIO support"
131 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
132 FSL_SOC_BOOKE || PPC_86xx
134 Say Y here if you're going to use hardware that connects to the
135 MPC512x/831x/834x/837x/8572/8610 GPIOs.
138 tristate "Qualcomm MSM GPIO v1"
139 depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
141 Say yes here to support the GPIO interface on ARM v6 based
142 Qualcomm MSM chips. Most of the pins on the MSM can be
143 selected for GPIO, and are controlled by this driver.
146 tristate "Qualcomm MSM GPIO v2"
147 depends on GPIOLIB && ARCH_MSM
149 Say yes here to support the GPIO interface on ARM v7 based
150 Qualcomm MSM chips. Most of the pins on the MSM can be
151 selected for GPIO, and are controlled by this driver.
157 select GENERIC_IRQ_CHIP
163 select GENERIC_IRQ_CHIP
166 bool "PrimeCell PL061 GPIO support"
168 select GENERIC_IRQ_CHIP
170 Say yes here to support the PrimeCell PL061 GPIO device
173 bool "PXA GPIO support"
174 depends on ARCH_PXA || ARCH_MMP
176 Say yes here to support the PXA GPIO device
179 bool "STA2x11/ConneXt GPIO support"
180 depends on MFD_STA2X11
181 select GENERIC_IRQ_CHIP
183 Say yes here to support the STA2x11/ConneXt GPIO device.
184 The GPIO module has 128 GPIO pins with alternate functions.
187 bool "VIA/Wondermedia SoC GPIO Support"
188 depends on ARCH_VT8500
190 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
193 bool "Xilinx GPIO support"
194 depends on PPC_OF || MICROBLAZE
196 Say yes here to support the Xilinx FPGA GPIO device
199 tristate "NEC VR4100 series General-purpose I/O Uint support"
200 depends on CPU_VR41XX
202 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
205 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
206 depends on PCI && X86
210 Say yes here to support GPIO interface on Intel Poulsbo SCH,
211 Intel Tunnel Creek processor or Intel Centerton processor.
212 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
213 powered by the core power rail and are turned off during sleep
214 modes (S3 and higher). The remaining four GPIOs are powered by
215 the Intel SCH suspend power supply. These GPIOs remain
216 active during S3. The suspend powered GPIOs can be used to wake the
217 system from the Suspend-to-RAM state.
218 The Intel Tunnel Creek processor has 5 GPIOs powered by the
219 core power rail and 9 from suspend power supply.
220 The Intel Centerton processor has a total of 30 GPIO pins.
221 Twenty-one are powered by the core power rail and 9 from the
222 suspend power supply.
225 tristate "Intel ICH GPIO"
226 depends on PCI && X86
230 Say yes here to support the GPIO functionality of a number of Intel
231 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
232 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
233 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
238 tristate "VIA VX855/VX875 GPIO"
243 Support access to the VX855/VX875 GPIO lines through the gpio library.
245 This driver provides common support for accessing the device,
246 additional drivers must be enabled in order to use the
247 functionality of the device.
250 bool "GE FPGA based GPIO"
253 Support for common GPIO functionality provided on some GE Single Board
256 This driver provides basic support (configure as input or output, read
257 and write pin state) for GPIO implemented in a number of GE single
260 comment "I2C GPIO expanders:"
263 tristate "Wolfson Microelectronics Arizona class devices"
264 depends on MFD_ARIZONA
266 Support for GPIOs on Wolfson Arizona class devices.
269 tristate "Maxim MAX7300 GPIO expander"
273 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
276 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
279 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
280 Port Expanders. Each IO port on these chips has a fixed role of
281 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
282 Input and Output (designed by 'P'). The combinations are listed
285 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
286 max7322 (4I4O), max7323 (4P4O)
288 16 bits: max7324 (8I8O), max7325 (8P8O),
289 max7326 (4I12O), max7327 (4P12O)
291 Board setup code must specify the model to use, and the start
292 number for these GPIOs.
294 config GPIO_MAX732X_IRQ
295 bool "Interrupt controller support for MAX732x"
296 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
298 Say yes here to enable the max732x to be used as an interrupt
299 controller. It requires the driver to be built in the kernel.
301 config GPIO_MC9S08DZ60
302 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
303 depends on I2C=y && MACH_MX35_3DS
305 Select this to enable the MC9S08DZ60 GPIO driver
308 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
311 Say yes here to provide access to several register-oriented
312 SMBus I/O expanders, made mostly by NXP or TI. Compatible
315 4 bits: pca9536, pca9537
317 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
318 pca9556, pca9557, pca9574, tca6408
320 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
323 config GPIO_PCA953X_IRQ
324 bool "Interrupt controller support for PCA953x"
325 depends on GPIO_PCA953X=y
327 Say yes here to enable the pca953x to be used as an interrupt
328 controller. It requires the driver to be built in the kernel.
331 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
335 Say yes here to provide access to most "quasi-bidirectional" I2C
336 GPIO expanders used for additional digital outputs or inputs.
337 Most of these parts are from NXP, though TI is a second source for
338 some of them. Compatible models include:
340 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
341 pca9670, pca9672, pca9674, pca9674a,
344 16 bits: pcf8575, pcf8575c, pca8575,
345 pca9671, pca9673, pca9675
347 Your board setup code will need to declare the expanders in
348 use, and assign numbers to the GPIOs they expose. Those GPIOs
349 can then be used from drivers and other kernel code, just like
350 other GPIOs, but only accessible from task contexts.
352 This driver provides an in-kernel interface to those GPIOs using
353 platform-neutral GPIO calls.
356 bool "RICOH RC5T583 GPIO"
357 depends on MFD_RC5T583
359 Select this option to enable GPIO driver for the Ricoh RC5T583
361 This driver provides the support for driving/reading the gpio pins
362 of RC5T583 device through standard gpio library.
365 bool "Semtech SX150x I2C GPIO expander"
369 Say yes here to provide support for Semtech SX150-series I2C
370 GPIO expanders. Compatible models include:
379 This enables support for the GPIOs found on the STMPE I/O
383 bool "XWAY STP GPIOs"
386 This enables support for the Serial To Parallel (STP) unit found on
387 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
388 that can be up to 24 bit. This peripheral is aimed at driving leds.
389 Some of the gpios/leds can be auto updated by the soc with dsl and
394 depends on MFD_TC3589X
396 This enables support for the GPIOs found on the TC3589X
400 tristate "TI TPS65912 GPIO"
401 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
403 This driver supports TPS65912 gpio chip
406 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
407 depends on TWL4030_CORE
409 Say yes here to access the GPIO signals of various multi-function
410 power management chips from Texas Instruments.
413 tristate "TWL6040 GPO"
414 depends on TWL6040_CORE
416 Say yes here to access the GPO signals of twl6040
417 audio chip from Texas Instruments.
420 tristate "WM831x GPIOs"
421 depends on MFD_WM831X
423 Say yes here to access the GPIO signals of WM831x power management
424 chips from Wolfson Microelectronics.
427 tristate "WM8350 GPIOs"
428 depends on MFD_WM8350
430 Say yes here to access the GPIO signals of WM8350 power management
431 chips from Wolfson Microelectronics.
434 tristate "WM8994 GPIOs"
435 depends on MFD_WM8994
437 Say yes here to access the GPIO signals of WM8994 audio hub
438 CODECs from Wolfson Microelectronics.
441 tristate "GPIO Support for ADP5520 PMIC"
442 depends on PMIC_ADP5520
444 This option enables support for on-chip GPIO found
445 on Analog Devices ADP5520 PMICs.
448 tristate "ADP5588 I2C GPIO expander"
451 This option enables support for 18 GPIOs found
452 on Analog Devices ADP5588 GPIO Expanders.
454 config GPIO_ADP5588_IRQ
455 bool "Interrupt controller support for ADP5588"
456 depends on GPIO_ADP5588=y
458 Say yes here to enable the adp5588 to be used as an interrupt
459 controller. It requires the driver to be built in the kernel.
462 tristate "Avionic Design N-bit GPIO expander"
465 This option enables support for N GPIOs found on Avionic Design
466 I2C GPIO expanders. The register space will be extended by powers
467 of two, so the controller will need to accomodate for that. For
468 example: if a controller provides 48 pins, 6 registers will be
469 enough to represent all pins, but the driver will assume a
470 register layout for 64 pins (8 registers).
472 comment "PCI GPIO expanders:"
475 tristate "AMD CS5535/CS5536 GPIO support"
476 depends on PCI && X86 && MFD_CS5535
478 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
479 can be used for quite a number of things. The CS5535/6 is found on
480 AMD Geode and Lemote Yeeloong devices.
485 tristate "BT8XX GPIO abuser"
486 depends on PCI && VIDEO_BT848=n
488 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
489 as a cheap PCI GPIO card.
491 This chip can be found on Miro, Hauppauge and STB TV-cards.
493 The card needs to be physically altered for using it as a
494 GPIO card. For more information on how to build a GPIO card
495 from a BT8xx TV card, see the documentation file at
496 Documentation/bt8xxgpio.txt
501 tristate "AMD 8111 GPIO driver"
504 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
506 Note, that usually system firmware/ACPI handles GPIO pins on their
507 own and users might easily break their systems with uncarefull usage
513 bool "Intel Langwell/Penwell GPIO support"
514 depends on PCI && X86
517 Say Y here to support Intel Langwell/Penwell GPIO.
520 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
521 depends on PCI && X86
522 select GENERIC_IRQ_CHIP
524 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
525 which is an IOH(Input/Output Hub) for x86 embedded processor.
526 This driver can access PCH GPIO device.
528 This driver also can be used for LAPIS Semiconductor IOH(Input/
529 Output Hub), ML7223 and ML7831.
530 ML7223 IOH is for MP(Media Phone) use.
531 ML7831 IOH is for general purpose use.
532 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
533 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
536 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
538 select GENERIC_IRQ_CHIP
540 ML7213 is companion chip for Intel Atom E6xx series.
541 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
542 Hub) which is for IVI(In-Vehicle Infotainment) use.
543 This driver can access the IOH's GPIO device.
545 config GPIO_SODAVILLE
546 bool "Intel Sodaville GPIO support"
547 depends on X86 && PCI && OF
549 select GENERIC_IRQ_CHIP
551 Say Y here to support Intel Sodaville GPIO.
553 config GPIO_TIMBERDALE
554 bool "Support for timberdale GPIO IP"
555 depends on MFD_TIMBERDALE && HAS_IOMEM
557 Add support for the GPIO IP in the timberdale FPGA.
560 tristate "RDC R-321x GPIO support"
565 Support for the RDC R321x SoC GPIOs over southbridge
566 PCI configuration space.
568 comment "SPI GPIO expanders:"
571 tristate "Maxim MAX7301 GPIO expander"
572 depends on SPI_MASTER
575 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
578 tristate "Microchip MCP23xxx I/O expander"
579 depends on SPI_MASTER || I2C
581 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
583 This provides a GPIO interface supporting inputs and outputs.
586 tristate "Freescale MC33880 high-side/low-side switch"
587 depends on SPI_MASTER
589 SPI driver for Freescale MC33880 high-side/low-side switch.
590 This provides GPIO interface supporting inputs and outputs.
593 tristate "74x164 serial-in/parallel-out 8-bits shift register"
594 depends on SPI_MASTER
596 Platform driver for 74x164 compatible serial-in/parallel-out
597 8-outputs shift registers. This driver can be used to provide access
598 to more gpio outputs.
600 comment "AC97 GPIO expanders:"
603 bool "Philips UCB1400 GPIO"
604 depends on UCB1400_CORE
606 This enables support for the Philips UCB1400 GPIO pins.
607 The UCB1400 is an AC97 audio codec.
609 comment "MODULbus GPIO expanders:"
612 tristate "Janz VMOD-TTL Digital IO Module"
613 depends on MFD_JANZ_CMODIO
615 This enables support for the Janz VMOD-TTL Digital IO module.
616 This driver provides support for driving the pins in output
617 mode only. Input mode is not supported.
620 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
621 depends on AB8500_CORE && BROKEN
623 Select this to enable the AB8500 IC GPIO driver
627 depends on MFD_TPS6586X
629 Select this option to enable GPIO driver for the TPS6586X
634 depends on MFD_TPS65910
636 Select this option to enable GPIO driver for the TPS65910
640 bool "Intel MSIC mixed signal gpio support"
641 depends on MFD_INTEL_MSIC
643 Enable support for GPIO on intel MSIC controllers found in