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 && BROKEN
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
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 "Xilinx GPIO support"
188 depends on PPC_OF || MICROBLAZE
190 Say yes here to support the Xilinx FPGA GPIO device
193 tristate "NEC VR4100 series General-purpose I/O Uint support"
194 depends on CPU_VR41XX
196 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
199 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
200 depends on PCI && X86
204 Say yes here to support GPIO interface on Intel Poulsbo SCH,
205 Intel Tunnel Creek processor or Intel Centerton processor.
206 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
207 powered by the core power rail and are turned off during sleep
208 modes (S3 and higher). The remaining four GPIOs are powered by
209 the Intel SCH suspend power supply. These GPIOs remain
210 active during S3. The suspend powered GPIOs can be used to wake the
211 system from the Suspend-to-RAM state.
212 The Intel Tunnel Creek processor has 5 GPIOs powered by the
213 core power rail and 9 from suspend power supply.
214 The Intel Centerton processor has a total of 30 GPIO pins.
215 Twenty-one are powered by the core power rail and 9 from the
216 suspend power supply.
219 tristate "Intel ICH GPIO"
220 depends on PCI && X86
224 Say yes here to support the GPIO functionality of a number of Intel
225 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
226 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
227 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
232 tristate "VIA VX855/VX875 GPIO"
237 Support access to the VX855/VX875 GPIO lines through the gpio library.
239 This driver provides common support for accessing the device,
240 additional drivers must be enabled in order to use the
241 functionality of the device.
244 bool "GE FPGA based GPIO"
247 Support for common GPIO functionality provided on some GE Single Board
250 This driver provides basic support (configure as input or output, read
251 and write pin state) for GPIO implemented in a number of GE single
254 comment "I2C GPIO expanders:"
257 tristate "Maxim MAX7300 GPIO expander"
261 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
264 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
267 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
268 Port Expanders. Each IO port on these chips has a fixed role of
269 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
270 Input and Output (designed by 'P'). The combinations are listed
273 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
274 max7322 (4I4O), max7323 (4P4O)
276 16 bits: max7324 (8I8O), max7325 (8P8O),
277 max7326 (4I12O), max7327 (4P12O)
279 Board setup code must specify the model to use, and the start
280 number for these GPIOs.
282 config GPIO_MAX732X_IRQ
283 bool "Interrupt controller support for MAX732x"
284 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
286 Say yes here to enable the max732x to be used as an interrupt
287 controller. It requires the driver to be built in the kernel.
289 config GPIO_MC9S08DZ60
290 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
291 depends on I2C && MACH_MX35_3DS
293 Select this to enable the MC9S08DZ60 GPIO driver
296 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
299 Say yes here to provide access to several register-oriented
300 SMBus I/O expanders, made mostly by NXP or TI. Compatible
303 4 bits: pca9536, pca9537
305 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
306 pca9556, pca9557, pca9574, tca6408
308 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
311 config GPIO_PCA953X_IRQ
312 bool "Interrupt controller support for PCA953x"
313 depends on GPIO_PCA953X=y
315 Say yes here to enable the pca953x to be used as an interrupt
316 controller. It requires the driver to be built in the kernel.
319 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
322 Say yes here to provide access to most "quasi-bidirectional" I2C
323 GPIO expanders used for additional digital outputs or inputs.
324 Most of these parts are from NXP, though TI is a second source for
325 some of them. Compatible models include:
327 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
328 pca9670, pca9672, pca9674, pca9674a,
331 16 bits: pcf8575, pcf8575c, pca8575,
332 pca9671, pca9673, pca9675
334 Your board setup code will need to declare the expanders in
335 use, and assign numbers to the GPIOs they expose. Those GPIOs
336 can then be used from drivers and other kernel code, just like
337 other GPIOs, but only accessible from task contexts.
339 This driver provides an in-kernel interface to those GPIOs using
340 platform-neutral GPIO calls.
343 bool "RICOH RC5T583 GPIO"
344 depends on MFD_RC5T583
346 Select this option to enable GPIO driver for the Ricoh RC5T583
348 This driver provides the support for driving/reading the gpio pins
349 of RC5T583 device through standard gpio library.
352 bool "Semtech SX150x I2C GPIO expander"
356 Say yes here to provide support for Semtech SX150-series I2C
357 GPIO expanders. Compatible models include:
366 This enables support for the GPIOs found on the STMPE I/O
370 bool "XWAY STP GPIOs"
373 This enables support for the Serial To Parallel (STP) unit found on
374 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
375 that can be up to 24 bit. This peripheral is aimed at driving leds.
376 Some of the gpios/leds can be auto updated by the soc with dsl and
381 depends on MFD_TC3589X
383 This enables support for the GPIOs found on the TC3589X
387 tristate "TI TPS65912 GPIO"
388 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
390 This driver supports TPS65912 gpio chip
393 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
394 depends on TWL4030_CORE
396 Say yes here to access the GPIO signals of various multi-function
397 power management chips from Texas Instruments.
400 tristate "WM831x GPIOs"
401 depends on MFD_WM831X
403 Say yes here to access the GPIO signals of WM831x power management
404 chips from Wolfson Microelectronics.
407 tristate "WM8350 GPIOs"
408 depends on MFD_WM8350
410 Say yes here to access the GPIO signals of WM8350 power management
411 chips from Wolfson Microelectronics.
414 tristate "WM8994 GPIOs"
415 depends on MFD_WM8994
417 Say yes here to access the GPIO signals of WM8994 audio hub
418 CODECs from Wolfson Microelectronics.
421 tristate "GPIO Support for ADP5520 PMIC"
422 depends on PMIC_ADP5520
424 This option enables support for on-chip GPIO found
425 on Analog Devices ADP5520 PMICs.
428 tristate "ADP5588 I2C GPIO expander"
431 This option enables support for 18 GPIOs found
432 on Analog Devices ADP5588 GPIO Expanders.
434 config GPIO_ADP5588_IRQ
435 bool "Interrupt controller support for ADP5588"
436 depends on GPIO_ADP5588=y
438 Say yes here to enable the adp5588 to be used as an interrupt
439 controller. It requires the driver to be built in the kernel.
441 comment "PCI GPIO expanders:"
444 tristate "AMD CS5535/CS5536 GPIO support"
445 depends on PCI && X86 && MFD_CS5535
447 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
448 can be used for quite a number of things. The CS5535/6 is found on
449 AMD Geode and Lemote Yeeloong devices.
454 tristate "BT8XX GPIO abuser"
455 depends on PCI && VIDEO_BT848=n
457 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
458 as a cheap PCI GPIO card.
460 This chip can be found on Miro, Hauppauge and STB TV-cards.
462 The card needs to be physically altered for using it as a
463 GPIO card. For more information on how to build a GPIO card
464 from a BT8xx TV card, see the documentation file at
465 Documentation/bt8xxgpio.txt
470 bool "Intel Langwell/Penwell GPIO support"
471 depends on PCI && X86
474 Say Y here to support Intel Langwell/Penwell GPIO.
477 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
478 depends on PCI && X86
479 select GENERIC_IRQ_CHIP
481 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
482 which is an IOH(Input/Output Hub) for x86 embedded processor.
483 This driver can access PCH GPIO device.
485 This driver also can be used for LAPIS Semiconductor IOH(Input/
486 Output Hub), ML7223 and ML7831.
487 ML7223 IOH is for MP(Media Phone) use.
488 ML7831 IOH is for general purpose use.
489 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
490 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
493 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
495 select GENERIC_IRQ_CHIP
497 ML7213 is companion chip for Intel Atom E6xx series.
498 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
499 Hub) which is for IVI(In-Vehicle Infotainment) use.
500 This driver can access the IOH's GPIO device.
502 config GPIO_SODAVILLE
503 bool "Intel Sodaville GPIO support"
504 depends on X86 && PCI && OF
506 select GENERIC_IRQ_CHIP
508 Say Y here to support Intel Sodaville GPIO.
510 config GPIO_TIMBERDALE
511 bool "Support for timberdale GPIO IP"
512 depends on MFD_TIMBERDALE && HAS_IOMEM
514 Add support for the GPIO IP in the timberdale FPGA.
517 tristate "RDC R-321x GPIO support"
522 Support for the RDC R321x SoC GPIOs over southbridge
523 PCI configuration space.
525 comment "SPI GPIO expanders:"
528 tristate "Maxim MAX7301 GPIO expander"
529 depends on SPI_MASTER
532 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
535 tristate "Microchip MCP23xxx I/O expander"
536 depends on SPI_MASTER || I2C
538 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
540 This provides a GPIO interface supporting inputs and outputs.
543 tristate "Freescale MC33880 high-side/low-side switch"
544 depends on SPI_MASTER
546 SPI driver for Freescale MC33880 high-side/low-side switch.
547 This provides GPIO interface supporting inputs and outputs.
550 tristate "74x164 serial-in/parallel-out 8-bits shift register"
551 depends on SPI_MASTER
553 Platform driver for 74x164 compatible serial-in/parallel-out
554 8-outputs shift registers. This driver can be used to provide access
555 to more gpio outputs.
557 comment "AC97 GPIO expanders:"
560 bool "Philips UCB1400 GPIO"
561 depends on UCB1400_CORE
563 This enables support for the Philips UCB1400 GPIO pins.
564 The UCB1400 is an AC97 audio codec.
566 comment "MODULbus GPIO expanders:"
569 tristate "Janz VMOD-TTL Digital IO Module"
570 depends on MFD_JANZ_CMODIO
572 This enables support for the Janz VMOD-TTL Digital IO module.
573 This driver provides support for driving the pins in output
574 mode only. Input mode is not supported.
577 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
578 depends on AB8500_CORE && BROKEN
580 Select this to enable the AB8500 IC GPIO driver
584 depends on MFD_TPS65910
586 Select this option to enable GPIO driver for the TPS65910
590 bool "Intel MSIC mixed signal gpio support"
591 depends on MFD_INTEL_MSIC
593 Enable support for GPIO on intel MSIC controllers found in