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.
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.
155 depends on ARCH_MVEBU
157 select GENERIC_IRQ_CHIP
163 select GENERIC_IRQ_CHIP
169 select GENERIC_IRQ_CHIP
172 bool "PrimeCell PL061 GPIO support"
174 select GENERIC_IRQ_CHIP
176 Say yes here to support the PrimeCell PL061 GPIO device
179 bool "PXA GPIO support"
180 depends on ARCH_PXA || ARCH_MMP
182 Say yes here to support the PXA GPIO device
185 bool "STA2x11/ConneXt GPIO support"
186 depends on MFD_STA2X11
187 select GENERIC_IRQ_CHIP
189 Say yes here to support the STA2x11/ConneXt GPIO device.
190 The GPIO module has 128 GPIO pins with alternate functions.
193 bool "VIA/Wondermedia SoC GPIO Support"
194 depends on ARCH_VT8500
196 Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
199 bool "Xilinx GPIO support"
200 depends on PPC_OF || MICROBLAZE
202 Say yes here to support the Xilinx FPGA GPIO device
205 tristate "NEC VR4100 series General-purpose I/O Uint support"
206 depends on CPU_VR41XX
208 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
211 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
212 depends on PCI && X86
216 Say yes here to support GPIO interface on Intel Poulsbo SCH,
217 Intel Tunnel Creek processor or Intel Centerton processor.
218 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
219 powered by the core power rail and are turned off during sleep
220 modes (S3 and higher). The remaining four GPIOs are powered by
221 the Intel SCH suspend power supply. These GPIOs remain
222 active during S3. The suspend powered GPIOs can be used to wake the
223 system from the Suspend-to-RAM state.
224 The Intel Tunnel Creek processor has 5 GPIOs powered by the
225 core power rail and 9 from suspend power supply.
226 The Intel Centerton processor has a total of 30 GPIO pins.
227 Twenty-one are powered by the core power rail and 9 from the
228 suspend power supply.
231 tristate "Intel ICH GPIO"
232 depends on PCI && X86
236 Say yes here to support the GPIO functionality of a number of Intel
237 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
238 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
239 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
244 tristate "VIA VX855/VX875 GPIO"
249 Support access to the VX855/VX875 GPIO lines through the gpio library.
251 This driver provides common support for accessing the device,
252 additional drivers must be enabled in order to use the
253 functionality of the device.
256 bool "GE FPGA based GPIO"
259 Support for common GPIO functionality provided on some GE Single Board
262 This driver provides basic support (configure as input or output, read
263 and write pin state) for GPIO implemented in a number of GE single
266 comment "I2C GPIO expanders:"
269 tristate "Wolfson Microelectronics Arizona class devices"
270 depends on MFD_ARIZONA
272 Support for GPIOs on Wolfson Arizona class devices.
275 tristate "Maxim MAX7300 GPIO expander"
279 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
282 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
285 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
286 Port Expanders. Each IO port on these chips has a fixed role of
287 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
288 Input and Output (designed by 'P'). The combinations are listed
291 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
292 max7322 (4I4O), max7323 (4P4O)
294 16 bits: max7324 (8I8O), max7325 (8P8O),
295 max7326 (4I12O), max7327 (4P12O)
297 Board setup code must specify the model to use, and the start
298 number for these GPIOs.
300 config GPIO_MAX732X_IRQ
301 bool "Interrupt controller support for MAX732x"
302 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
304 Say yes here to enable the max732x to be used as an interrupt
305 controller. It requires the driver to be built in the kernel.
307 config GPIO_MC9S08DZ60
308 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
309 depends on I2C=y && MACH_MX35_3DS
311 Select this to enable the MC9S08DZ60 GPIO driver
314 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
317 Say yes here to provide access to several register-oriented
318 SMBus I/O expanders, made mostly by NXP or TI. Compatible
321 4 bits: pca9536, pca9537
323 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
324 pca9556, pca9557, pca9574, tca6408
326 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
329 config GPIO_PCA953X_IRQ
330 bool "Interrupt controller support for PCA953x"
331 depends on GPIO_PCA953X=y
333 Say yes here to enable the pca953x to be used as an interrupt
334 controller. It requires the driver to be built in the kernel.
337 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
341 Say yes here to provide access to most "quasi-bidirectional" I2C
342 GPIO expanders used for additional digital outputs or inputs.
343 Most of these parts are from NXP, though TI is a second source for
344 some of them. Compatible models include:
346 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
347 pca9670, pca9672, pca9674, pca9674a,
350 16 bits: pcf8575, pcf8575c, pca8575,
351 pca9671, pca9673, pca9675
353 Your board setup code will need to declare the expanders in
354 use, and assign numbers to the GPIOs they expose. Those GPIOs
355 can then be used from drivers and other kernel code, just like
356 other GPIOs, but only accessible from task contexts.
358 This driver provides an in-kernel interface to those GPIOs using
359 platform-neutral GPIO calls.
362 bool "RICOH RC5T583 GPIO"
363 depends on MFD_RC5T583
365 Select this option to enable GPIO driver for the Ricoh RC5T583
367 This driver provides the support for driving/reading the gpio pins
368 of RC5T583 device through standard gpio library.
371 bool "Semtech SX150x I2C GPIO expander"
375 Say yes here to provide support for Semtech SX150-series I2C
376 GPIO expanders. Compatible models include:
385 This enables support for the GPIOs found on the STMPE I/O
389 bool "XWAY STP GPIOs"
392 This enables support for the Serial To Parallel (STP) unit found on
393 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
394 that can be up to 24 bit. This peripheral is aimed at driving leds.
395 Some of the gpios/leds can be auto updated by the soc with dsl and
400 depends on MFD_TC3589X
402 This enables support for the GPIOs found on the TC3589X
406 tristate "TI TPS65912 GPIO"
407 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
409 This driver supports TPS65912 gpio chip
412 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
413 depends on TWL4030_CORE
415 Say yes here to access the GPIO signals of various multi-function
416 power management chips from Texas Instruments.
419 tristate "TWL6040 GPO"
420 depends on TWL6040_CORE
422 Say yes here to access the GPO signals of twl6040
423 audio chip from Texas Instruments.
426 tristate "WM831x GPIOs"
427 depends on MFD_WM831X
429 Say yes here to access the GPIO signals of WM831x power management
430 chips from Wolfson Microelectronics.
433 tristate "WM8350 GPIOs"
434 depends on MFD_WM8350
436 Say yes here to access the GPIO signals of WM8350 power management
437 chips from Wolfson Microelectronics.
440 tristate "WM8994 GPIOs"
441 depends on MFD_WM8994
443 Say yes here to access the GPIO signals of WM8994 audio hub
444 CODECs from Wolfson Microelectronics.
447 tristate "GPIO Support for ADP5520 PMIC"
448 depends on PMIC_ADP5520
450 This option enables support for on-chip GPIO found
451 on Analog Devices ADP5520 PMICs.
454 tristate "ADP5588 I2C GPIO expander"
457 This option enables support for 18 GPIOs found
458 on Analog Devices ADP5588 GPIO Expanders.
460 config GPIO_ADP5588_IRQ
461 bool "Interrupt controller support for ADP5588"
462 depends on GPIO_ADP5588=y
464 Say yes here to enable the adp5588 to be used as an interrupt
465 controller. It requires the driver to be built in the kernel.
468 tristate "Avionic Design N-bit GPIO expander"
469 depends on I2C && OF_GPIO
471 This option enables support for N GPIOs found on Avionic Design
472 I2C GPIO expanders. The register space will be extended by powers
473 of two, so the controller will need to accomodate for that. For
474 example: if a controller provides 48 pins, 6 registers will be
475 enough to represent all pins, but the driver will assume a
476 register layout for 64 pins (8 registers).
478 comment "PCI GPIO expanders:"
481 tristate "AMD CS5535/CS5536 GPIO support"
482 depends on PCI && X86 && MFD_CS5535
484 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
485 can be used for quite a number of things. The CS5535/6 is found on
486 AMD Geode and Lemote Yeeloong devices.
491 tristate "BT8XX GPIO abuser"
492 depends on PCI && VIDEO_BT848=n
494 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
495 as a cheap PCI GPIO card.
497 This chip can be found on Miro, Hauppauge and STB TV-cards.
499 The card needs to be physically altered for using it as a
500 GPIO card. For more information on how to build a GPIO card
501 from a BT8xx TV card, see the documentation file at
502 Documentation/bt8xxgpio.txt
507 tristate "AMD 8111 GPIO driver"
510 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
512 Note, that usually system firmware/ACPI handles GPIO pins on their
513 own and users might easily break their systems with uncarefull usage
519 bool "Intel Langwell/Penwell GPIO support"
520 depends on PCI && X86
523 Say Y here to support Intel Langwell/Penwell GPIO.
526 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
527 depends on PCI && X86
528 select GENERIC_IRQ_CHIP
530 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
531 which is an IOH(Input/Output Hub) for x86 embedded processor.
532 This driver can access PCH GPIO device.
534 This driver also can be used for LAPIS Semiconductor IOH(Input/
535 Output Hub), ML7223 and ML7831.
536 ML7223 IOH is for MP(Media Phone) use.
537 ML7831 IOH is for general purpose use.
538 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
539 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
542 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
544 select GENERIC_IRQ_CHIP
546 ML7213 is companion chip for Intel Atom E6xx series.
547 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
548 Hub) which is for IVI(In-Vehicle Infotainment) use.
549 This driver can access the IOH's GPIO device.
551 config GPIO_SODAVILLE
552 bool "Intel Sodaville GPIO support"
553 depends on X86 && PCI && OF
555 select GENERIC_IRQ_CHIP
557 Say Y here to support Intel Sodaville GPIO.
559 config GPIO_TIMBERDALE
560 bool "Support for timberdale GPIO IP"
561 depends on MFD_TIMBERDALE && HAS_IOMEM
563 Add support for the GPIO IP in the timberdale FPGA.
566 tristate "RDC R-321x GPIO support"
571 Support for the RDC R321x SoC GPIOs over southbridge
572 PCI configuration space.
574 comment "SPI GPIO expanders:"
577 tristate "Maxim MAX7301 GPIO expander"
578 depends on SPI_MASTER
581 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
584 tristate "Microchip MCP23xxx I/O expander"
585 depends on SPI_MASTER || I2C
587 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
589 This provides a GPIO interface supporting inputs and outputs.
592 tristate "Freescale MC33880 high-side/low-side switch"
593 depends on SPI_MASTER
595 SPI driver for Freescale MC33880 high-side/low-side switch.
596 This provides GPIO interface supporting inputs and outputs.
599 tristate "74x164 serial-in/parallel-out 8-bits shift register"
600 depends on SPI_MASTER
602 Platform driver for 74x164 compatible serial-in/parallel-out
603 8-outputs shift registers. This driver can be used to provide access
604 to more gpio outputs.
606 comment "AC97 GPIO expanders:"
609 bool "Philips UCB1400 GPIO"
610 depends on UCB1400_CORE
612 This enables support for the Philips UCB1400 GPIO pins.
613 The UCB1400 is an AC97 audio codec.
615 comment "MODULbus GPIO expanders:"
618 tristate "Janz VMOD-TTL Digital IO Module"
619 depends on MFD_JANZ_CMODIO
621 This enables support for the Janz VMOD-TTL Digital IO module.
622 This driver provides support for driving the pins in output
623 mode only. Input mode is not supported.
626 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
627 depends on AB8500_CORE && BROKEN
629 Select this to enable the AB8500 IC GPIO driver
633 depends on MFD_TPS6586X
635 Select this option to enable GPIO driver for the TPS6586X
640 depends on MFD_TPS65910
642 Select this option to enable GPIO driver for the TPS65910
646 bool "Intel MSIC mixed signal gpio support"
647 depends on MFD_INTEL_MSIC
649 Enable support for GPIO on intel MSIC controllers found in