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 "Xilinx GPIO support"
172 depends on PPC_OF || MICROBLAZE
174 Say yes here to support the Xilinx FPGA GPIO device
177 tristate "NEC VR4100 series General-purpose I/O Uint support"
178 depends on CPU_VR41XX
180 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
183 tristate "Intel SCH/TunnelCreek GPIO"
184 depends on PCI && X86
188 Say yes here to support GPIO interface on Intel Poulsbo SCH
189 or Intel Tunnel Creek processor.
190 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
191 powered by the core power rail and are turned off during sleep
192 modes (S3 and higher). The remaining four GPIOs are powered by
193 the Intel SCH suspend power supply. These GPIOs remain
194 active during S3. The suspend powered GPIOs can be used to wake the
195 system from the Suspend-to-RAM state.
196 The Intel Tunnel Creek processor has 5 GPIOs powered by the
197 core power rail and 9 from suspend power supply.
200 tristate "VIA VX855/VX875 GPIO"
205 Support access to the VX855/VX875 GPIO lines through the gpio library.
207 This driver provides common support for accessing the device,
208 additional drivers must be enabled in order to use the
209 functionality of the device.
212 bool "GE FPGA based GPIO"
215 Support for common GPIO functionality provided on some GE Single Board
218 This driver provides basic support (configure as input or output, read
219 and write pin state) for GPIO implemented in a number of GE single
222 comment "I2C GPIO expanders:"
225 tristate "Maxim MAX7300 GPIO expander"
229 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
232 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
235 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
236 Port Expanders. Each IO port on these chips has a fixed role of
237 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
238 Input and Output (designed by 'P'). The combinations are listed
241 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
242 max7322 (4I4O), max7323 (4P4O)
244 16 bits: max7324 (8I8O), max7325 (8P8O),
245 max7326 (4I12O), max7327 (4P12O)
247 Board setup code must specify the model to use, and the start
248 number for these GPIOs.
250 config GPIO_MAX732X_IRQ
251 bool "Interrupt controller support for MAX732x"
252 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
254 Say yes here to enable the max732x to be used as an interrupt
255 controller. It requires the driver to be built in the kernel.
257 config GPIO_MC9S08DZ60
258 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
259 depends on I2C && MACH_MX35_3DS
261 Select this to enable the MC9S08DZ60 GPIO driver
264 tristate "PCA953x, PCA955x, PCA957x, TCA64xx, and MAX7310 I/O ports"
267 Say yes here to provide access to several register-oriented
268 SMBus I/O expanders, made mostly by NXP or TI. Compatible
271 4 bits: pca9536, pca9537
273 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
274 pca9556, pca9557, pca9574, tca6408
276 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
279 config GPIO_PCA953X_IRQ
280 bool "Interrupt controller support for PCA953x"
281 depends on GPIO_PCA953X=y
283 Say yes here to enable the pca953x to be used as an interrupt
284 controller. It requires the driver to be built in the kernel.
287 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
290 Say yes here to provide access to most "quasi-bidirectional" I2C
291 GPIO expanders used for additional digital outputs or inputs.
292 Most of these parts are from NXP, though TI is a second source for
293 some of them. Compatible models include:
295 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
296 pca9670, pca9672, pca9674, pca9674a,
299 16 bits: pcf8575, pcf8575c, pca8575,
300 pca9671, pca9673, pca9675
302 Your board setup code will need to declare the expanders in
303 use, and assign numbers to the GPIOs they expose. Those GPIOs
304 can then be used from drivers and other kernel code, just like
305 other GPIOs, but only accessible from task contexts.
307 This driver provides an in-kernel interface to those GPIOs using
308 platform-neutral GPIO calls.
311 bool "RICOH RC5T583 GPIO"
312 depends on MFD_RC5T583
314 Select this option to enable GPIO driver for the Ricoh RC5T583
316 This driver provides the support for driving/reading the gpio pins
317 of RC5T583 device through standard gpio library.
320 bool "Semtech SX150x I2C GPIO expander"
324 Say yes here to provide support for Semtech SX150-series I2C
325 GPIO expanders. Compatible models include:
334 This enables support for the GPIOs found on the STMPE I/O
339 depends on MFD_TC3589X
341 This enables support for the GPIOs found on the TC3589X
345 tristate "TI TPS65912 GPIO"
346 depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
348 This driver supports TPS65912 gpio chip
351 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
352 depends on TWL4030_CORE
354 Say yes here to access the GPIO signals of various multi-function
355 power management chips from Texas Instruments.
358 tristate "WM831x GPIOs"
359 depends on MFD_WM831X
361 Say yes here to access the GPIO signals of WM831x power management
362 chips from Wolfson Microelectronics.
365 tristate "WM8350 GPIOs"
366 depends on MFD_WM8350
368 Say yes here to access the GPIO signals of WM8350 power management
369 chips from Wolfson Microelectronics.
372 tristate "WM8994 GPIOs"
373 depends on MFD_WM8994
375 Say yes here to access the GPIO signals of WM8994 audio hub
376 CODECs from Wolfson Microelectronics.
379 tristate "GPIO Support for ADP5520 PMIC"
380 depends on PMIC_ADP5520
382 This option enables support for on-chip GPIO found
383 on Analog Devices ADP5520 PMICs.
386 tristate "ADP5588 I2C GPIO expander"
389 This option enables support for 18 GPIOs found
390 on Analog Devices ADP5588 GPIO Expanders.
392 config GPIO_ADP5588_IRQ
393 bool "Interrupt controller support for ADP5588"
394 depends on GPIO_ADP5588=y
396 Say yes here to enable the adp5588 to be used as an interrupt
397 controller. It requires the driver to be built in the kernel.
399 comment "PCI GPIO expanders:"
402 tristate "AMD CS5535/CS5536 GPIO support"
403 depends on PCI && X86 && MFD_CS5535
405 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
406 can be used for quite a number of things. The CS5535/6 is found on
407 AMD Geode and Lemote Yeeloong devices.
412 tristate "BT8XX GPIO abuser"
413 depends on PCI && VIDEO_BT848=n
415 The BT8xx frame grabber chip has 24 GPIO pins than can be abused
416 as a cheap PCI GPIO card.
418 This chip can be found on Miro, Hauppauge and STB TV-cards.
420 The card needs to be physically altered for using it as a
421 GPIO card. For more information on how to build a GPIO card
422 from a BT8xx TV card, see the documentation file at
423 Documentation/bt8xxgpio.txt
428 bool "Intel Langwell/Penwell GPIO support"
429 depends on PCI && X86
432 Say Y here to support Intel Langwell/Penwell GPIO.
435 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
436 depends on PCI && X86
437 select GENERIC_IRQ_CHIP
439 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
440 which is an IOH(Input/Output Hub) for x86 embedded processor.
441 This driver can access PCH GPIO device.
443 This driver also can be used for LAPIS Semiconductor IOH(Input/
444 Output Hub), ML7223 and ML7831.
445 ML7223 IOH is for MP(Media Phone) use.
446 ML7831 IOH is for general purpose use.
447 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
448 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
451 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
453 select GENERIC_IRQ_CHIP
455 ML7213 is companion chip for Intel Atom E6xx series.
456 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
457 Hub) which is for IVI(In-Vehicle Infotainment) use.
458 This driver can access the IOH's GPIO device.
460 config GPIO_SODAVILLE
461 bool "Intel Sodaville GPIO support"
462 depends on X86 && PCI && OF
464 select GENERIC_IRQ_CHIP
466 Say Y here to support Intel Sodaville GPIO.
468 config GPIO_TIMBERDALE
469 bool "Support for timberdale GPIO IP"
470 depends on MFD_TIMBERDALE && HAS_IOMEM
472 Add support for the GPIO IP in the timberdale FPGA.
475 tristate "RDC R-321x GPIO support"
480 Support for the RDC R321x SoC GPIOs over southbridge
481 PCI configuration space.
483 comment "SPI GPIO expanders:"
486 tristate "Maxim MAX7301 GPIO expander"
487 depends on SPI_MASTER
490 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
493 tristate "Microchip MCP23xxx I/O expander"
494 depends on SPI_MASTER || I2C
496 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
498 This provides a GPIO interface supporting inputs and outputs.
501 tristate "Freescale MC33880 high-side/low-side switch"
502 depends on SPI_MASTER
504 SPI driver for Freescale MC33880 high-side/low-side switch.
505 This provides GPIO interface supporting inputs and outputs.
508 tristate "74x164 serial-in/parallel-out 8-bits shift register"
509 depends on SPI_MASTER
511 Platform driver for 74x164 compatible serial-in/parallel-out
512 8-outputs shift registers. This driver can be used to provide access
513 to more gpio outputs.
515 comment "AC97 GPIO expanders:"
518 bool "Philips UCB1400 GPIO"
519 depends on UCB1400_CORE
521 This enables support for the Philips UCB1400 GPIO pins.
522 The UCB1400 is an AC97 audio codec.
524 comment "MODULbus GPIO expanders:"
527 tristate "Janz VMOD-TTL Digital IO Module"
528 depends on MFD_JANZ_CMODIO
530 This enables support for the Janz VMOD-TTL Digital IO module.
531 This driver provides support for driving the pins in output
532 mode only. Input mode is not supported.
535 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
536 depends on AB8500_CORE && BROKEN
538 Select this to enable the AB8500 IC GPIO driver
542 depends on MFD_TPS65910
544 Select this option to enable GPIO driver for the TPS65910
548 bool "Intel MSIC mixed signal gpio support"
549 depends on MFD_INTEL_MSIC
551 Enable support for GPIO on intel MSIC controllers found in