2 # GPIO infrastructure and drivers
5 config ARCH_WANT_OPTIONAL_GPIOLIB
8 Select this config option from the architecture Kconfig, if
9 it is possible to use gpiolib on the architecture, but let the
10 user decide whether to actually build it or not.
11 Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
12 not depend on GPIOs being available, but rather let the user
13 decide whether he needs it or not.
15 config ARCH_REQUIRE_GPIOLIB
19 Platforms select gpiolib if they use this infrastructure
20 for all their GPIOs, usually starting with ones integrated
22 Selecting this from the architecture code will cause the gpiolib
23 code to always get built in.
29 depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
32 This enables GPIO support through the generic GPIO library.
33 You only need to enable this, if you also want to enable
34 one or more of the GPIO drivers below.
41 bool "Debug GPIO calls"
42 depends on DEBUG_KERNEL
44 Say Y here to add some extra checks and diagnostics to GPIO calls.
45 These checks help ensure that GPIOs have been properly initialized
46 before they are used, and that sleeping calls are not made from
47 non-sleeping contexts. They can make bitbanged serial protocols
48 slower. The diagnostics help catch the type of setup errors
49 that are most common when setting up new platforms or boards.
52 bool "/sys/class/gpio/... (sysfs interface)"
53 depends on SYSFS && EXPERIMENTAL
55 Say Y here to add a sysfs interface for GPIOs.
57 This is mostly useful to work around omissions in a system's
58 kernel support. Those are common in custom and semicustom
59 hardware assembled using standard kernels with a minimum of
60 custom patches. In those cases, userspace code may import
61 a given GPIO from the kernel, if no kernel driver requested it.
63 Kernel drivers may also request that a particular GPIO be
64 exported to userspace; this can be useful when debugging.
69 # put drivers in the right section, in alphabetical order
72 tristate "Dialog DA9052 GPIO"
73 depends on PMIC_DA9052 && BROKEN
75 Say yes here to enable the GPIO driver for the DA9052 chip.
80 comment "Memory mapped GPIO drivers:"
82 config GPIO_GENERIC_PLATFORM
83 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
86 Say yes here to support basic platform_device memory-mapped GPIO controllers.
89 tristate "IT8761E GPIO support"
90 depends on X86 # unconditional access to IO space.
92 Say yes here to support GPIO functionality of IT8761E super I/O chip.
96 depends on ARCH_EP93XX
101 depends on PPC_MPC52xx
104 bool "MPC512x/MPC8xxx GPIO support"
105 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
106 FSL_SOC_BOOKE || PPC_86xx
108 Say Y here if you're going to use hardware that connects to the
109 MPC512x/831x/834x/837x/8572/8610 GPIOs.
112 tristate "Qualcomm MSM GPIO v1"
113 depends on GPIOLIB && ARCH_MSM
115 Say yes here to support the GPIO interface on ARM v6 based
116 Qualcomm MSM chips. Most of the pins on the MSM can be
117 selected for GPIO, and are controlled by this driver.
120 tristate "Qualcomm MSM GPIO v2"
121 depends on GPIOLIB && ARCH_MSM
123 Say yes here to support the GPIO interface on ARM v7 based
124 Qualcomm MSM chips. Most of the pins on the MSM can be
125 selected for GPIO, and are controlled by this driver.
131 select GENERIC_IRQ_CHIP
137 select GENERIC_IRQ_CHIP
140 bool "PrimeCell PL061 GPIO support"
142 select GENERIC_IRQ_CHIP
144 Say yes here to support the PrimeCell PL061 GPIO device
147 bool "PXA GPIO support"
148 depends on ARCH_PXA || ARCH_MMP
150 Say yes here to support the PXA GPIO device
153 bool "Xilinx GPIO support"
154 depends on PPC_OF || MICROBLAZE
156 Say yes here to support the Xilinx FPGA GPIO device
159 tristate "NEC VR4100 series General-purpose I/O Uint support"
160 depends on CPU_VR41XX
162 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
165 tristate "Intel SCH/TunnelCreek GPIO"
166 depends on PCI && X86
170 Say yes here to support GPIO interface on Intel Poulsbo SCH
171 or Intel Tunnel Creek processor.
172 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
173 powered by the core power rail and are turned off during sleep
174 modes (S3 and higher). The remaining four GPIOs are powered by
175 the Intel SCH suspend power supply. These GPIOs remain
176 active during S3. The suspend powered GPIOs can be used to wake the
177 system from the Suspend-to-RAM state.
178 The Intel Tunnel Creek processor has 5 GPIOs powered by the
179 core power rail and 9 from suspend power supply.
182 tristate "Intel ICH GPIO"
183 depends on PCI && X86
187 Say yes here to support the GPIO functionality of a number of Intel
188 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
189 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
190 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
195 tristate "VIA VX855/VX875 GPIO"
200 Support access to the VX855/VX875 GPIO lines through the gpio library.
202 This driver provides common support for accessing the device,
203 additional drivers must be enabled in order to use the
204 functionality of the device.
207 bool "GE FPGA based GPIO"
210 Support for common GPIO functionality provided on some GE Single Board
213 This driver provides basic support (configure as input or output, read
214 and write pin state) for GPIO implemented in a number of GE single
217 comment "I2C GPIO expanders:"
220 tristate "Maxim MAX7300 GPIO expander"
224 GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
227 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
230 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
231 Port Expanders. Each IO port on these chips has a fixed role of
232 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
233 Input and Output (designed by 'P'). The combinations are listed
236 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
237 max7322 (4I4O), max7323 (4P4O)
239 16 bits: max7324 (8I8O), max7325 (8P8O),
240 max7326 (4I12O), max7327 (4P12O)
242 Board setup code must specify the model to use, and the start
243 number for these GPIOs.
245 config GPIO_MAX732X_IRQ
246 bool "Interrupt controller support for MAX732x"
247 depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
249 Say yes here to enable the max732x to be used as an interrupt
250 controller. It requires the driver to be built in the kernel.
252 config GPIO_MC9S08DZ60
253 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
254 depends on I2C && MACH_MX35_3DS
256 Select this to enable the MC9S08DZ60 GPIO driver
259 tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
262 Say yes here to provide access to several register-oriented
263 SMBus I/O expanders, made mostly by NXP or TI. Compatible
266 4 bits: pca9536, pca9537
268 8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
271 16 bits: pca9535, pca9539, pca9555, tca6416
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
416 Say Y here to support Intel Langwell/Penwell GPIO.
419 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
420 depends on PCI && X86
421 select GENERIC_IRQ_CHIP
423 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
424 which is an IOH(Input/Output Hub) for x86 embedded processor.
425 This driver can access PCH GPIO device.
427 This driver also can be used for LAPIS Semiconductor IOH(Input/
428 Output Hub), ML7223 and ML7831.
429 ML7223 IOH is for MP(Media Phone) use.
430 ML7831 IOH is for general purpose use.
431 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
432 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
435 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
437 select GENERIC_IRQ_CHIP
439 ML7213 is companion chip for Intel Atom E6xx series.
440 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
441 Hub) which is for IVI(In-Vehicle Infotainment) use.
442 This driver can access the IOH's GPIO device.
444 config GPIO_SODAVILLE
445 bool "Intel Sodaville GPIO support"
446 depends on X86 && PCI && OF
448 select GENERIC_IRQ_CHIP
450 Say Y here to support Intel Sodaville GPIO.
452 config GPIO_TIMBERDALE
453 bool "Support for timberdale GPIO IP"
454 depends on MFD_TIMBERDALE && HAS_IOMEM
456 Add support for the GPIO IP in the timberdale FPGA.
459 tristate "RDC R-321x GPIO support"
464 Support for the RDC R321x SoC GPIOs over southbridge
465 PCI configuration space.
467 comment "SPI GPIO expanders:"
470 tristate "Maxim MAX7301 GPIO expander"
471 depends on SPI_MASTER
474 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
477 tristate "Microchip MCP23xxx I/O expander"
478 depends on SPI_MASTER || I2C
480 SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
482 This provides a GPIO interface supporting inputs and outputs.
485 tristate "Freescale MC33880 high-side/low-side switch"
486 depends on SPI_MASTER
488 SPI driver for Freescale MC33880 high-side/low-side switch.
489 This provides GPIO interface supporting inputs and outputs.
492 tristate "74x164 serial-in/parallel-out 8-bits shift register"
493 depends on SPI_MASTER
495 Platform driver for 74x164 compatible serial-in/parallel-out
496 8-outputs shift registers. This driver can be used to provide access
497 to more gpio outputs.
499 comment "AC97 GPIO expanders:"
502 bool "Philips UCB1400 GPIO"
503 depends on UCB1400_CORE
505 This enables support for the Philips UCB1400 GPIO pins.
506 The UCB1400 is an AC97 audio codec.
508 comment "MODULbus GPIO expanders:"
511 tristate "Janz VMOD-TTL Digital IO Module"
512 depends on MFD_JANZ_CMODIO
514 This enables support for the Janz VMOD-TTL Digital IO module.
515 This driver provides support for driving the pins in output
516 mode only. Input mode is not supported.
519 bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
520 depends on AB8500_CORE && BROKEN
522 Select this to enable the AB8500 IC GPIO driver
526 depends on MFD_TPS65910
528 Select this option to enable GPIO driver for the TPS65910