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.
108 depends on ARCH_EP93XX
113 depends on PPC_MPC52xx
116 bool "MPC512x/MPC8xxx GPIO support"
117 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
118 FSL_SOC_BOOKE || PPC_86xx
120 Say Y here if you're going to use hardware that connects to the
121 MPC512x/831x/834x/837x/8572/8610 GPIOs.
124 tristate "Qualcomm MSM GPIO v1"
125 depends on GPIOLIB && ARCH_MSM
127 Say yes here to support the GPIO interface on ARM v6 based
128 Qualcomm MSM chips. Most of the pins on the MSM can be
129 selected for GPIO, and are controlled by this driver.
132 tristate "Qualcomm MSM GPIO v2"
133 depends on GPIOLIB && ARCH_MSM
135 Say yes here to support the GPIO interface on ARM v7 based
136 Qualcomm MSM chips. Most of the pins on the MSM can be
137 selected for GPIO, and are controlled by this driver.
143 select GENERIC_IRQ_CHIP
149 select GENERIC_IRQ_CHIP
152 bool "PrimeCell PL061 GPIO support"
154 select GENERIC_IRQ_CHIP
156 Say yes here to support the PrimeCell PL061 GPIO device
159 bool "PXA GPIO support"
160 depends on ARCH_PXA || ARCH_MMP
162 Say yes here to support the PXA GPIO device
165 bool "Xilinx GPIO support"
166 depends on PPC_OF || MICROBLAZE
168 Say yes here to support the Xilinx FPGA GPIO device
171 tristate "NEC VR4100 series General-purpose I/O Uint support"
172 depends on CPU_VR41XX
174 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
177 tristate "Intel SCH/TunnelCreek GPIO"
178 depends on PCI && X86
182 Say yes here to support GPIO interface on Intel Poulsbo SCH
183 or Intel Tunnel Creek processor.
184 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
185 powered by the core power rail and are turned off during sleep
186 modes (S3 and higher). The remaining four GPIOs are powered by
187 the Intel SCH suspend power supply. These GPIOs remain
188 active during S3. The suspend powered GPIOs can be used to wake the
189 system from the Suspend-to-RAM state.
190 The Intel Tunnel Creek processor has 5 GPIOs powered by the
191 core power rail and 9 from suspend power supply.
194 tristate "VIA VX855/VX875 GPIO"
199 Support access to the VX855/VX875 GPIO lines through the gpio library.
201 This driver provides common support for accessing the device,
202 additional drivers must be enabled in order to use the
203 functionality of the device.
206 bool "GE FPGA based GPIO"
209 Support for common GPIO functionality provided on some GE Single Board
212 This driver provides basic support (configure as input or output, read
213 and write pin state) for GPIO implemented in a number of GE single
216 comment "I2C GPIO expanders:"
219 tristate "Maxim MAX7300 GPIO expander"
223 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
226 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
229 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
230 Port Expanders. Each IO port on these chips has a fixed role of
231 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
232 Input and Output (designed by 'P'). The combinations are listed
235 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
236 max7322 (4I4O), max7323 (4P4O)
238 16 bits: max7324 (8I8O), max7325 (8P8O),
239 max7326 (4I12O), max7327 (4P12O)
241 Board setup code must specify the model to use, and the start
242 number for these GPIOs.
244 config GPIO_MAX732X_IRQ
245 bool "Interrupt controller support for MAX732x"
246 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
248 Say yes here to enable the max732x to be used as an interrupt
249 controller. It requires the driver to be built in the kernel.
251 config GPIO_MC9S08DZ60
252 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
253 depends on I2C && MACH_MX35_3DS
255 Select this to enable the MC9S08DZ60 GPIO driver
258 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
261 Say yes here to provide access to several register-oriented
262 SMBus I/O expanders, made mostly by NXP or TI. Compatible
265 4 bits: pca9536, pca9537
267 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
268 pca9556, pca9557, pca9574, tca6408
270 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
273 config GPIO_PCA953X_IRQ
274 bool "Interrupt controller support for PCA953x"
275 depends on GPIO_PCA953X=y
277 Say yes here to enable the pca953x to be used as an interrupt
278 controller. It requires the driver to be built in the kernel.
281 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
284 Say yes here to provide access to most "quasi-bidirectional" I2C
285 GPIO expanders used for additional digital outputs or inputs.
286 Most of these parts are from NXP, though TI is a second source for
287 some of them. Compatible models include:
289 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
290 pca9670, pca9672, pca9674, pca9674a,
293 16 bits: pcf8575, pcf8575c, pca8575,
294 pca9671, pca9673, pca9675
296 Your board setup code will need to declare the expanders in
297 use, and assign numbers to the GPIOs they expose. Those GPIOs
298 can then be used from drivers and other kernel code, just like
299 other GPIOs, but only accessible from task contexts.
301 This driver provides an in-kernel interface to those GPIOs using
302 platform-neutral GPIO calls.
305 bool "Semtech SX150x I2C GPIO expander"
309 Say yes here to provide support for Semtech SX150-series I2C
310 GPIO expanders. Compatible models include:
319 This enables support for the GPIOs found on the STMPE I/O
324 depends on MFD_TC3589X
326 This enables support for the GPIOs found on the TC3589X
330 tristate "TI TPS65912 GPIO"
331 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
333 This driver supports TPS65912 gpio chip
336 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
337 depends on TWL4030_CORE
339 Say yes here to access the GPIO signals of various multi-function
340 power management chips from Texas Instruments.
343 tristate "WM831x GPIOs"
344 depends on MFD_WM831X
346 Say yes here to access the GPIO signals of WM831x power management
347 chips from Wolfson Microelectronics.
350 tristate "WM8350 GPIOs"
351 depends on MFD_WM8350
353 Say yes here to access the GPIO signals of WM8350 power management
354 chips from Wolfson Microelectronics.
357 tristate "WM8994 GPIOs"
358 depends on MFD_WM8994
360 Say yes here to access the GPIO signals of WM8994 audio hub
361 CODECs from Wolfson Microelectronics.
364 tristate "GPIO Support for ADP5520 PMIC"
365 depends on PMIC_ADP5520
367 This option enables support for on-chip GPIO found
368 on Analog Devices ADP5520 PMICs.
371 tristate "ADP5588 I2C GPIO expander"
374 This option enables support for 18 GPIOs found
375 on Analog Devices ADP5588 GPIO Expanders.
377 config GPIO_ADP5588_IRQ
378 bool "Interrupt controller support for ADP5588"
379 depends on GPIO_ADP5588=y
381 Say yes here to enable the adp5588 to be used as an interrupt
382 controller. It requires the driver to be built in the kernel.
384 comment "PCI GPIO expanders:"
387 tristate "AMD CS5535/CS5536 GPIO support"
388 depends on PCI && X86 && MFD_CS5535
390 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
391 can be used for quite a number of things. The CS5535/6 is found on
392 AMD Geode and Lemote Yeeloong devices.
397 tristate "BT8XX GPIO abuser"
398 depends on PCI && VIDEO_BT848=n
400 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
401 as a cheap PCI GPIO card.
403 This chip can be found on Miro, Hauppauge and STB TV-cards.
405 The card needs to be physically altered for using it as a
406 GPIO card. For more information on how to build a GPIO card
407 from a BT8xx TV card, see the documentation file at
408 Documentation/bt8xxgpio.txt
413 bool "Intel Langwell/Penwell GPIO support"
414 depends on PCI && X86
417 Say Y here to support Intel Langwell/Penwell GPIO.
420 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
421 depends on PCI && X86
422 select GENERIC_IRQ_CHIP
424 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
425 which is an IOH(Input/Output Hub) for x86 embedded processor.
426 This driver can access PCH GPIO device.
428 This driver also can be used for LAPIS Semiconductor IOH(Input/
429 Output Hub), ML7223 and ML7831.
430 ML7223 IOH is for MP(Media Phone) use.
431 ML7831 IOH is for general purpose use.
432 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
433 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
436 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
438 select GENERIC_IRQ_CHIP
440 ML7213 is companion chip for Intel Atom E6xx series.
441 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
442 Hub) which is for IVI(In-Vehicle Infotainment) use.
443 This driver can access the IOH's GPIO device.
445 config GPIO_SODAVILLE
446 bool "Intel Sodaville GPIO support"
447 depends on X86 && PCI && OF
449 select GENERIC_IRQ_CHIP
451 Say Y here to support Intel Sodaville GPIO.
453 config GPIO_TIMBERDALE
454 bool "Support for timberdale GPIO IP"
455 depends on MFD_TIMBERDALE && HAS_IOMEM
457 Add support for the GPIO IP in the timberdale FPGA.
460 tristate "RDC R-321x GPIO support"
465 Support for the RDC R321x SoC GPIOs over southbridge
466 PCI configuration space.
468 comment "SPI GPIO expanders:"
471 tristate "Maxim MAX7301 GPIO expander"
472 depends on SPI_MASTER
475 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
478 tristate "Microchip MCP23xxx I/O expander"
479 depends on SPI_MASTER || I2C
481 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
483 This provides a GPIO interface supporting inputs and outputs.
486 tristate "Freescale MC33880 high-side/low-side switch"
487 depends on SPI_MASTER
489 SPI driver for Freescale MC33880 high-side/low-side switch.
490 This provides GPIO interface supporting inputs and outputs.
493 tristate "74x164 serial-in/parallel-out 8-bits shift register"
494 depends on SPI_MASTER
496 Platform driver for 74x164 compatible serial-in/parallel-out
497 8-outputs shift registers. This driver can be used to provide access
498 to more gpio outputs.
500 comment "AC97 GPIO expanders:"
503 bool "Philips UCB1400 GPIO"
504 depends on UCB1400_CORE
506 This enables support for the Philips UCB1400 GPIO pins.
507 The UCB1400 is an AC97 audio codec.
509 comment "MODULbus GPIO expanders:"
512 tristate "Janz VMOD-TTL Digital IO Module"
513 depends on MFD_JANZ_CMODIO
515 This enables support for the Janz VMOD-TTL Digital IO module.
516 This driver provides support for driving the pins in output
517 mode only. Input mode is not supported.
520 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
521 depends on AB8500_CORE && BROKEN
523 Select this to enable the AB8500 IC GPIO driver
527 depends on MFD_TPS65910
529 Select this option to enable GPIO driver for the TPS65910
533 bool "Intel MSIC mixed signal gpio support"
534 depends on MFD_INTEL_MSIC
536 Enable support for GPIO on intel MSIC controllers found in