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 && (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 "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 "Wolfson Microelectronics Arizona class devices"
258 depends on MFD_ARIZONA
260 Support for GPIOs on Wolfson Arizona class devices.
263 tristate "Maxim MAX7300 GPIO expander"
267 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
270 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
273 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
274 Port Expanders. Each IO port on these chips has a fixed role of
275 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
276 Input and Output (designed by 'P'). The combinations are listed
279 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
280 max7322 (4I4O), max7323 (4P4O)
282 16 bits: max7324 (8I8O), max7325 (8P8O),
283 max7326 (4I12O), max7327 (4P12O)
285 Board setup code must specify the model to use, and the start
286 number for these GPIOs.
288 config GPIO_MAX732X_IRQ
289 bool "Interrupt controller support for MAX732x"
290 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
292 Say yes here to enable the max732x to be used as an interrupt
293 controller. It requires the driver to be built in the kernel.
295 config GPIO_MC9S08DZ60
296 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
297 depends on I2C && MACH_MX35_3DS
299 Select this to enable the MC9S08DZ60 GPIO driver
302 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
305 Say yes here to provide access to several register-oriented
306 SMBus I/O expanders, made mostly by NXP or TI. Compatible
309 4 bits: pca9536, pca9537
311 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
312 pca9556, pca9557, pca9574, tca6408
314 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
317 config GPIO_PCA953X_IRQ
318 bool "Interrupt controller support for PCA953x"
319 depends on GPIO_PCA953X=y
321 Say yes here to enable the pca953x to be used as an interrupt
322 controller. It requires the driver to be built in the kernel.
325 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
328 Say yes here to provide access to most "quasi-bidirectional" I2C
329 GPIO expanders used for additional digital outputs or inputs.
330 Most of these parts are from NXP, though TI is a second source for
331 some of them. Compatible models include:
333 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
334 pca9670, pca9672, pca9674, pca9674a,
337 16 bits: pcf8575, pcf8575c, pca8575,
338 pca9671, pca9673, pca9675
340 Your board setup code will need to declare the expanders in
341 use, and assign numbers to the GPIOs they expose. Those GPIOs
342 can then be used from drivers and other kernel code, just like
343 other GPIOs, but only accessible from task contexts.
345 This driver provides an in-kernel interface to those GPIOs using
346 platform-neutral GPIO calls.
349 bool "RICOH RC5T583 GPIO"
350 depends on MFD_RC5T583
352 Select this option to enable GPIO driver for the Ricoh RC5T583
354 This driver provides the support for driving/reading the gpio pins
355 of RC5T583 device through standard gpio library.
358 bool "Semtech SX150x I2C GPIO expander"
362 Say yes here to provide support for Semtech SX150-series I2C
363 GPIO expanders. Compatible models include:
372 This enables support for the GPIOs found on the STMPE I/O
376 bool "XWAY STP GPIOs"
379 This enables support for the Serial To Parallel (STP) unit found on
380 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
381 that can be up to 24 bit. This peripheral is aimed at driving leds.
382 Some of the gpios/leds can be auto updated by the soc with dsl and
387 depends on MFD_TC3589X
389 This enables support for the GPIOs found on the TC3589X
393 tristate "TI TPS65912 GPIO"
394 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
396 This driver supports TPS65912 gpio chip
399 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
400 depends on TWL4030_CORE
402 Say yes here to access the GPIO signals of various multi-function
403 power management chips from Texas Instruments.
406 tristate "WM831x GPIOs"
407 depends on MFD_WM831X
409 Say yes here to access the GPIO signals of WM831x power management
410 chips from Wolfson Microelectronics.
413 tristate "WM8350 GPIOs"
414 depends on MFD_WM8350
416 Say yes here to access the GPIO signals of WM8350 power management
417 chips from Wolfson Microelectronics.
420 tristate "WM8994 GPIOs"
421 depends on MFD_WM8994
423 Say yes here to access the GPIO signals of WM8994 audio hub
424 CODECs from Wolfson Microelectronics.
427 tristate "GPIO Support for ADP5520 PMIC"
428 depends on PMIC_ADP5520
430 This option enables support for on-chip GPIO found
431 on Analog Devices ADP5520 PMICs.
434 tristate "ADP5588 I2C GPIO expander"
437 This option enables support for 18 GPIOs found
438 on Analog Devices ADP5588 GPIO Expanders.
440 config GPIO_ADP5588_IRQ
441 bool "Interrupt controller support for ADP5588"
442 depends on GPIO_ADP5588=y
444 Say yes here to enable the adp5588 to be used as an interrupt
445 controller. It requires the driver to be built in the kernel.
447 comment "PCI GPIO expanders:"
450 tristate "AMD CS5535/CS5536 GPIO support"
451 depends on PCI && X86 && MFD_CS5535
453 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
454 can be used for quite a number of things. The CS5535/6 is found on
455 AMD Geode and Lemote Yeeloong devices.
460 tristate "BT8XX GPIO abuser"
461 depends on PCI && VIDEO_BT848=n
463 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
464 as a cheap PCI GPIO card.
466 This chip can be found on Miro, Hauppauge and STB TV-cards.
468 The card needs to be physically altered for using it as a
469 GPIO card. For more information on how to build a GPIO card
470 from a BT8xx TV card, see the documentation file at
471 Documentation/bt8xxgpio.txt
476 tristate "AMD 8111 GPIO driver"
479 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
481 Note, that usually system firmware/ACPI handles GPIO pins on their
482 own and users might easily break their systems with uncarefull usage
488 bool "Intel Langwell/Penwell GPIO support"
489 depends on PCI && X86
492 Say Y here to support Intel Langwell/Penwell GPIO.
495 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
496 depends on PCI && X86
497 select GENERIC_IRQ_CHIP
499 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
500 which is an IOH(Input/Output Hub) for x86 embedded processor.
501 This driver can access PCH GPIO device.
503 This driver also can be used for LAPIS Semiconductor IOH(Input/
504 Output Hub), ML7223 and ML7831.
505 ML7223 IOH is for MP(Media Phone) use.
506 ML7831 IOH is for general purpose use.
507 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
508 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
511 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
513 select GENERIC_IRQ_CHIP
515 ML7213 is companion chip for Intel Atom E6xx series.
516 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
517 Hub) which is for IVI(In-Vehicle Infotainment) use.
518 This driver can access the IOH's GPIO device.
520 config GPIO_SODAVILLE
521 bool "Intel Sodaville GPIO support"
522 depends on X86 && PCI && OF
524 select GENERIC_IRQ_CHIP
526 Say Y here to support Intel Sodaville GPIO.
528 config GPIO_TIMBERDALE
529 bool "Support for timberdale GPIO IP"
530 depends on MFD_TIMBERDALE && HAS_IOMEM
532 Add support for the GPIO IP in the timberdale FPGA.
535 tristate "RDC R-321x GPIO support"
540 Support for the RDC R321x SoC GPIOs over southbridge
541 PCI configuration space.
543 comment "SPI GPIO expanders:"
546 tristate "Maxim MAX7301 GPIO expander"
547 depends on SPI_MASTER
550 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
553 tristate "Microchip MCP23xxx I/O expander"
554 depends on SPI_MASTER || I2C
556 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
558 This provides a GPIO interface supporting inputs and outputs.
561 tristate "Freescale MC33880 high-side/low-side switch"
562 depends on SPI_MASTER
564 SPI driver for Freescale MC33880 high-side/low-side switch.
565 This provides GPIO interface supporting inputs and outputs.
568 tristate "74x164 serial-in/parallel-out 8-bits shift register"
569 depends on SPI_MASTER
571 Platform driver for 74x164 compatible serial-in/parallel-out
572 8-outputs shift registers. This driver can be used to provide access
573 to more gpio outputs.
575 comment "AC97 GPIO expanders:"
578 bool "Philips UCB1400 GPIO"
579 depends on UCB1400_CORE
581 This enables support for the Philips UCB1400 GPIO pins.
582 The UCB1400 is an AC97 audio codec.
584 comment "MODULbus GPIO expanders:"
587 tristate "Janz VMOD-TTL Digital IO Module"
588 depends on MFD_JANZ_CMODIO
590 This enables support for the Janz VMOD-TTL Digital IO module.
591 This driver provides support for driving the pins in output
592 mode only. Input mode is not supported.
595 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
596 depends on AB8500_CORE && BROKEN
598 Select this to enable the AB8500 IC GPIO driver
602 depends on MFD_TPS6586X
604 Select this option to enable GPIO driver for the TPS6586X
609 depends on MFD_TPS65910
611 Select this option to enable GPIO driver for the TPS65910
615 bool "Intel MSIC mixed signal gpio support"
616 depends on MFD_INTEL_MSIC
618 Enable support for GPIO on intel MSIC controllers found in