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
119 depends on PPC_MPC52xx
122 bool "MPC512x/MPC8xxx GPIO support"
123 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
124 FSL_SOC_BOOKE || PPC_86xx
126 Say Y here if you're going to use hardware that connects to the
127 MPC512x/831x/834x/837x/8572/8610 GPIOs.
130 tristate "Qualcomm MSM GPIO v1"
131 depends on GPIOLIB && ARCH_MSM
133 Say yes here to support the GPIO interface on ARM v6 based
134 Qualcomm MSM chips. Most of the pins on the MSM can be
135 selected for GPIO, and are controlled by this driver.
138 tristate "Qualcomm MSM GPIO v2"
139 depends on GPIOLIB && ARCH_MSM
141 Say yes here to support the GPIO interface on ARM v7 based
142 Qualcomm MSM chips. Most of the pins on the MSM can be
143 selected for GPIO, and are controlled by this driver.
149 select GENERIC_IRQ_CHIP
155 select GENERIC_IRQ_CHIP
158 bool "PrimeCell PL061 GPIO support"
160 select GENERIC_IRQ_CHIP
162 Say yes here to support the PrimeCell PL061 GPIO device
165 bool "PXA GPIO support"
166 depends on ARCH_PXA || ARCH_MMP
168 Say yes here to support the PXA GPIO device
171 bool "STA2x11/ConneXt GPIO support"
172 depends on MFD_STA2X11
173 select GENERIC_IRQ_CHIP
175 Say yes here to support the STA2x11/ConneXt GPIO device.
176 The GPIO module has 128 GPIO pins with alternate functions.
179 bool "Xilinx GPIO support"
180 depends on PPC_OF || MICROBLAZE
182 Say yes here to support the Xilinx FPGA GPIO device
185 tristate "NEC VR4100 series General-purpose I/O Uint support"
186 depends on CPU_VR41XX
188 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
191 tristate "Intel SCH/TunnelCreek/Centerton GPIO"
192 depends on PCI && X86
196 Say yes here to support GPIO interface on Intel Poulsbo SCH,
197 Intel Tunnel Creek processor or Intel Centerton processor.
198 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
199 powered by the core power rail and are turned off during sleep
200 modes (S3 and higher). The remaining four GPIOs are powered by
201 the Intel SCH suspend power supply. These GPIOs remain
202 active during S3. The suspend powered GPIOs can be used to wake the
203 system from the Suspend-to-RAM state.
204 The Intel Tunnel Creek processor has 5 GPIOs powered by the
205 core power rail and 9 from suspend power supply.
206 The Intel Centerton processor has a total of 30 GPIO pins.
207 Twenty-one are powered by the core power rail and 9 from the
208 suspend power supply.
211 tristate "Intel ICH GPIO"
212 depends on PCI && X86
216 Say yes here to support the GPIO functionality of a number of Intel
217 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
218 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
219 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
224 tristate "VIA VX855/VX875 GPIO"
229 Support access to the VX855/VX875 GPIO lines through the gpio library.
231 This driver provides common support for accessing the device,
232 additional drivers must be enabled in order to use the
233 functionality of the device.
236 bool "GE FPGA based GPIO"
239 Support for common GPIO functionality provided on some GE Single Board
242 This driver provides basic support (configure as input or output, read
243 and write pin state) for GPIO implemented in a number of GE single
246 comment "I2C GPIO expanders:"
249 tristate "Maxim MAX7300 GPIO expander"
253 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
256 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
259 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
260 Port Expanders. Each IO port on these chips has a fixed role of
261 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
262 Input and Output (designed by 'P'). The combinations are listed
265 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
266 max7322 (4I4O), max7323 (4P4O)
268 16 bits: max7324 (8I8O), max7325 (8P8O),
269 max7326 (4I12O), max7327 (4P12O)
271 Board setup code must specify the model to use, and the start
272 number for these GPIOs.
274 config GPIO_MAX732X_IRQ
275 bool "Interrupt controller support for MAX732x"
276 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
278 Say yes here to enable the max732x to be used as an interrupt
279 controller. It requires the driver to be built in the kernel.
281 config GPIO_MC9S08DZ60
282 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
283 depends on I2C && MACH_MX35_3DS
285 Select this to enable the MC9S08DZ60 GPIO driver
288 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
291 Say yes here to provide access to several register-oriented
292 SMBus I/O expanders, made mostly by NXP or TI. Compatible
295 4 bits: pca9536, pca9537
297 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
298 pca9556, pca9557, pca9574, tca6408
300 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
303 config GPIO_PCA953X_IRQ
304 bool "Interrupt controller support for PCA953x"
305 depends on GPIO_PCA953X=y
307 Say yes here to enable the pca953x to be used as an interrupt
308 controller. It requires the driver to be built in the kernel.
311 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
314 Say yes here to provide access to most "quasi-bidirectional" I2C
315 GPIO expanders used for additional digital outputs or inputs.
316 Most of these parts are from NXP, though TI is a second source for
317 some of them. Compatible models include:
319 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
320 pca9670, pca9672, pca9674, pca9674a,
323 16 bits: pcf8575, pcf8575c, pca8575,
324 pca9671, pca9673, pca9675
326 Your board setup code will need to declare the expanders in
327 use, and assign numbers to the GPIOs they expose. Those GPIOs
328 can then be used from drivers and other kernel code, just like
329 other GPIOs, but only accessible from task contexts.
331 This driver provides an in-kernel interface to those GPIOs using
332 platform-neutral GPIO calls.
335 bool "RICOH RC5T583 GPIO"
336 depends on MFD_RC5T583
338 Select this option to enable GPIO driver for the Ricoh RC5T583
340 This driver provides the support for driving/reading the gpio pins
341 of RC5T583 device through standard gpio library.
344 bool "Semtech SX150x I2C GPIO expander"
348 Say yes here to provide support for Semtech SX150-series I2C
349 GPIO expanders. Compatible models include:
358 This enables support for the GPIOs found on the STMPE I/O
363 depends on MFD_TC3589X
365 This enables support for the GPIOs found on the TC3589X
369 tristate "TI TPS65912 GPIO"
370 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
372 This driver supports TPS65912 gpio chip
375 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
376 depends on TWL4030_CORE
378 Say yes here to access the GPIO signals of various multi-function
379 power management chips from Texas Instruments.
382 tristate "WM831x GPIOs"
383 depends on MFD_WM831X
385 Say yes here to access the GPIO signals of WM831x power management
386 chips from Wolfson Microelectronics.
389 tristate "WM8350 GPIOs"
390 depends on MFD_WM8350
392 Say yes here to access the GPIO signals of WM8350 power management
393 chips from Wolfson Microelectronics.
396 tristate "WM8994 GPIOs"
397 depends on MFD_WM8994
399 Say yes here to access the GPIO signals of WM8994 audio hub
400 CODECs from Wolfson Microelectronics.
403 tristate "GPIO Support for ADP5520 PMIC"
404 depends on PMIC_ADP5520
406 This option enables support for on-chip GPIO found
407 on Analog Devices ADP5520 PMICs.
410 tristate "ADP5588 I2C GPIO expander"
413 This option enables support for 18 GPIOs found
414 on Analog Devices ADP5588 GPIO Expanders.
416 config GPIO_ADP5588_IRQ
417 bool "Interrupt controller support for ADP5588"
418 depends on GPIO_ADP5588=y
420 Say yes here to enable the adp5588 to be used as an interrupt
421 controller. It requires the driver to be built in the kernel.
423 comment "PCI GPIO expanders:"
426 tristate "AMD CS5535/CS5536 GPIO support"
427 depends on PCI && X86 && MFD_CS5535
429 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
430 can be used for quite a number of things. The CS5535/6 is found on
431 AMD Geode and Lemote Yeeloong devices.
436 tristate "BT8XX GPIO abuser"
437 depends on PCI && VIDEO_BT848=n
439 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
440 as a cheap PCI GPIO card.
442 This chip can be found on Miro, Hauppauge and STB TV-cards.
444 The card needs to be physically altered for using it as a
445 GPIO card. For more information on how to build a GPIO card
446 from a BT8xx TV card, see the documentation file at
447 Documentation/bt8xxgpio.txt
452 bool "Intel Langwell/Penwell GPIO support"
453 depends on PCI && X86
456 Say Y here to support Intel Langwell/Penwell GPIO.
459 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
460 depends on PCI && X86
461 select GENERIC_IRQ_CHIP
463 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
464 which is an IOH(Input/Output Hub) for x86 embedded processor.
465 This driver can access PCH GPIO device.
467 This driver also can be used for LAPIS Semiconductor IOH(Input/
468 Output Hub), ML7223 and ML7831.
469 ML7223 IOH is for MP(Media Phone) use.
470 ML7831 IOH is for general purpose use.
471 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
472 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
475 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
477 select GENERIC_IRQ_CHIP
479 ML7213 is companion chip for Intel Atom E6xx series.
480 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
481 Hub) which is for IVI(In-Vehicle Infotainment) use.
482 This driver can access the IOH's GPIO device.
484 config GPIO_SODAVILLE
485 bool "Intel Sodaville GPIO support"
486 depends on X86 && PCI && OF
488 select GENERIC_IRQ_CHIP
490 Say Y here to support Intel Sodaville GPIO.
492 config GPIO_TIMBERDALE
493 bool "Support for timberdale GPIO IP"
494 depends on MFD_TIMBERDALE && HAS_IOMEM
496 Add support for the GPIO IP in the timberdale FPGA.
499 tristate "RDC R-321x GPIO support"
504 Support for the RDC R321x SoC GPIOs over southbridge
505 PCI configuration space.
507 comment "SPI GPIO expanders:"
510 tristate "Maxim MAX7301 GPIO expander"
511 depends on SPI_MASTER
514 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
517 tristate "Microchip MCP23xxx I/O expander"
518 depends on SPI_MASTER || I2C
520 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
522 This provides a GPIO interface supporting inputs and outputs.
525 tristate "Freescale MC33880 high-side/low-side switch"
526 depends on SPI_MASTER
528 SPI driver for Freescale MC33880 high-side/low-side switch.
529 This provides GPIO interface supporting inputs and outputs.
532 tristate "74x164 serial-in/parallel-out 8-bits shift register"
533 depends on SPI_MASTER
535 Platform driver for 74x164 compatible serial-in/parallel-out
536 8-outputs shift registers. This driver can be used to provide access
537 to more gpio outputs.
539 comment "AC97 GPIO expanders:"
542 bool "Philips UCB1400 GPIO"
543 depends on UCB1400_CORE
545 This enables support for the Philips UCB1400 GPIO pins.
546 The UCB1400 is an AC97 audio codec.
548 comment "MODULbus GPIO expanders:"
551 tristate "Janz VMOD-TTL Digital IO Module"
552 depends on MFD_JANZ_CMODIO
554 This enables support for the Janz VMOD-TTL Digital IO module.
555 This driver provides support for driving the pins in output
556 mode only. Input mode is not supported.
559 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
560 depends on AB8500_CORE && BROKEN
562 Select this to enable the AB8500 IC GPIO driver
566 depends on MFD_TPS65910
568 Select this option to enable GPIO driver for the TPS65910
572 bool "Intel MSIC mixed signal gpio support"
573 depends on MFD_INTEL_MSIC
575 Enable support for GPIO on intel MSIC controllers found in