2008-02-04 23:28:17 -07:00
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#
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2011-05-20 00:40:19 -06:00
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# GPIO infrastructure and drivers
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2008-02-04 23:28:17 -07:00
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#
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2008-07-25 02:46:11 -06:00
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config ARCH_WANT_OPTIONAL_GPIOLIB
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2008-02-04 23:28:17 -07:00
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bool
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2008-07-25 02:46:11 -06:00
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help
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Select this config option from the architecture Kconfig, if
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it is possible to use gpiolib on the architecture, but let the
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user decide whether to actually build it or not.
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Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
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not depend on GPIOs being available, but rather let the user
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decide whether he needs it or not.
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config ARCH_REQUIRE_GPIOLIB
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bool
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select GPIOLIB
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2008-02-04 23:28:17 -07:00
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help
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Platforms select gpiolib if they use this infrastructure
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for all their GPIOs, usually starting with ones integrated
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into SOC processors.
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2008-07-25 02:46:11 -06:00
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Selecting this from the architecture code will cause the gpiolib
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code to always get built in.
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menuconfig GPIOLIB
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bool "GPIO Support"
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depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
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select GENERIC_GPIO
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help
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This enables GPIO support through the generic GPIO library.
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You only need to enable this, if you also want to enable
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2011-05-20 00:40:19 -06:00
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one or more of the GPIO drivers below.
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2008-07-25 02:46:11 -06:00
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If unsure, say N.
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2008-02-04 23:28:17 -07:00
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2008-07-25 02:46:11 -06:00
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if GPIOLIB
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2008-02-04 23:28:17 -07:00
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config DEBUG_GPIO
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bool "Debug GPIO calls"
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depends on DEBUG_KERNEL
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help
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Say Y here to add some extra checks and diagnostics to GPIO calls.
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2009-01-26 03:12:25 -07:00
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These checks help ensure that GPIOs have been properly initialized
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before they are used, and that sleeping calls are not made from
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non-sleeping contexts. They can make bitbanged serial protocols
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2008-02-04 23:28:17 -07:00
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slower. The diagnostics help catch the type of setup errors
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that are most common when setting up new platforms or boards.
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gpio: sysfs interface
This adds a simple sysfs interface for GPIOs.
/sys/class/gpio
/export ... asks the kernel to export a GPIO to userspace
/unexport ... to return a GPIO to the kernel
/gpioN ... for each exported GPIO #N
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write high, low
/gpiochipN ... for each gpiochip; #N is its first GPIO
/base ... (r/o) same as N
/label ... (r/o) descriptive, not necessarily unique
/ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1)
GPIOs claimed by kernel code may be exported by its owner using a new
gpio_export() call, which should be most useful for driver debugging.
Such exports may optionally be done without a "direction" attribute.
Userspace may ask to take over a GPIO by writing to a sysfs control file,
helping to cope with incomplete board support or other "one-off"
requirements that don't merit full kernel support:
echo 23 > /sys/class/gpio/export
... will gpio_request(23, "sysfs") and gpio_export(23);
use /sys/class/gpio/gpio-23/direction to (re)configure it,
when that GPIO can be used as both input and output.
echo 23 > /sys/class/gpio/unexport
... will gpio_free(23), when it was exported as above
The extra D-space footprint is a few hundred bytes, except for the sysfs
resources associated with each exported GPIO. The additional I-space
footprint is about two thirds of the current size of gpiolib (!). Since
no /dev node creation is involved, no "udev" support is needed.
Related changes:
* This adds a device pointer to "struct gpio_chip". When GPIO
providers initialize that, sysfs gpio class devices become children of
that device instead of being "virtual" devices.
* The (few) gpio_chip providers which have such a device node have
been updated.
* Some gpio_chip drivers also needed to update their module "owner"
field ... for which missing kerneldoc was added.
* Some gpio_chips don't support input GPIOs. Those GPIOs are now
flagged appropriately when the chip is registered.
Based on previous patches, and discussion both on and off LKML.
A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this
merges to mainline.
[akpm@linux-foundation.org: a few maintenance build fixes]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Cc: Greg KH <greg@kroah.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 02:46:07 -06:00
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config GPIO_SYSFS
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bool "/sys/class/gpio/... (sysfs interface)"
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depends on SYSFS && EXPERIMENTAL
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help
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Say Y here to add a sysfs interface for GPIOs.
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This is mostly useful to work around omissions in a system's
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kernel support. Those are common in custom and semicustom
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hardware assembled using standard kernels with a minimum of
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custom patches. In those cases, userspace code may import
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a given GPIO from the kernel, if no kernel driver requested it.
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Kernel drivers may also request that a particular GPIO be
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exported to userspace; this can be useful when debugging.
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2011-06-04 18:38:28 -06:00
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config GPIO_GENERIC
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tristate
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2011-05-20 00:40:19 -06:00
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# put drivers in the right section, in alphabetical order
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2008-02-04 23:28:17 -07:00
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2011-07-06 04:32:13 -06:00
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config GPIO_DA9052
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tristate "Dialog DA9052 GPIO"
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depends on PMIC_DA9052
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help
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Say yes here to enable the GPIO driver for the DA9052 chip.
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2010-03-05 14:44:33 -07:00
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config GPIO_MAX730X
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tristate
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2011-05-20 00:40:19 -06:00
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comment "Memory mapped GPIO drivers:"
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2008-11-12 14:25:38 -07:00
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2011-06-04 18:38:28 -06:00
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config GPIO_GENERIC_PLATFORM
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tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
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select GPIO_GENERIC
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2010-10-27 16:33:15 -06:00
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help
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2011-06-04 18:38:28 -06:00
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Say yes here to support basic platform_device memory-mapped GPIO controllers.
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2010-10-27 16:33:15 -06:00
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2010-03-05 14:44:39 -07:00
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config GPIO_IT8761E
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tristate "IT8761E GPIO support"
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help
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Say yes here to support GPIO functionality of IT8761E super I/O chip.
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2011-06-01 11:09:19 -06:00
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config GPIO_EP93XX
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def_bool y
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depends on ARCH_EP93XX
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2011-06-08 15:35:33 -06:00
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select GPIO_GENERIC
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2011-06-01 11:09:19 -06:00
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2011-05-23 02:27:45 -06:00
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config GPIO_EXYNOS4
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2011-06-03 12:32:41 -06:00
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def_bool y
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depends on CPU_EXYNOS4210
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2011-05-23 02:27:45 -06:00
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2011-07-06 11:54:19 -06:00
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config GPIO_MPC5200
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def_bool y
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depends on PPC_MPC52xx
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2011-05-16 14:57:39 -06:00
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config GPIO_MSM_V1
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tristate "Qualcomm MSM GPIO v1"
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depends on GPIOLIB && ARCH_MSM
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help
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Say yes here to support the GPIO interface on ARM v6 based
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Qualcomm MSM chips. Most of the pins on the MSM can be
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selected for GPIO, and are controlled by this driver.
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2011-05-16 16:53:38 -06:00
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config GPIO_MSM_V2
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tristate "Qualcomm MSM GPIO v2"
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depends on GPIOLIB && ARCH_MSM
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help
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Say yes here to support the GPIO interface on ARM v7 based
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Qualcomm MSM chips. Most of the pins on the MSM can be
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selected for GPIO, and are controlled by this driver.
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2011-06-05 10:07:54 -06:00
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config GPIO_MXC
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def_bool y
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depends on ARCH_MXC
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2011-06-04 18:38:28 -06:00
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select GPIO_GENERIC
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2011-06-07 02:25:37 -06:00
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select GENERIC_IRQ_CHIP
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2011-06-04 18:38:28 -06:00
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config GPIO_MXS
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def_bool y
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depends on ARCH_MXS
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2011-06-06 08:31:29 -06:00
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select GPIO_GENERIC
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2011-06-07 08:00:54 -06:00
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select GENERIC_IRQ_CHIP
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2011-06-05 10:07:54 -06:00
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2011-05-23 02:27:38 -06:00
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config GPIO_PLAT_SAMSUNG
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2011-06-03 12:32:41 -06:00
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def_bool y
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depends on SAMSUNG_GPIOLIB_4BIT
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2011-05-23 02:27:38 -06:00
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2011-08-25 20:03:03 -06:00
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config GPIO_S3C24XX
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def_bool y
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depends on PLAT_S3C24XX
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2011-05-23 02:27:58 -06:00
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config GPIO_S5PC100
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2011-06-03 12:32:41 -06:00
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def_bool y
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depends on CPU_S5PC100
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2011-05-23 02:27:58 -06:00
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2011-05-23 02:27:51 -06:00
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config GPIO_S5PV210
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2011-06-03 12:32:41 -06:00
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def_bool y
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depends on CPU_S5PV210
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2011-05-23 02:27:51 -06:00
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2009-06-18 17:48:58 -06:00
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config GPIO_PL061
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bool "PrimeCell PL061 GPIO support"
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depends on ARM_AMBA
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help
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Say yes here to support the PrimeCell PL061 GPIO device
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2008-11-12 14:25:38 -07:00
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config GPIO_XILINX
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bool "Xilinx GPIO support"
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2009-05-11 07:49:12 -06:00
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depends on PPC_OF || MICROBLAZE
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2008-11-12 14:25:38 -07:00
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help
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Say yes here to support the Xilinx FPGA GPIO device
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2009-06-28 20:11:05 -06:00
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config GPIO_VR41XX
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tristate "NEC VR4100 series General-purpose I/O Uint support"
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depends on CPU_VR41XX
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help
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Say yes here to support the NEC VR4100 series General-purpose I/O Uint
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2010-03-02 02:48:55 -07:00
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config GPIO_SCH
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2011-03-14 04:53:05 -06:00
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tristate "Intel SCH/TunnelCreek GPIO"
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2011-05-20 00:40:17 -06:00
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depends on PCI && X86
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2010-03-05 10:43:06 -07:00
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select MFD_CORE
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2010-03-02 02:48:55 -07:00
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select LPC_SCH
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help
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2011-03-14 04:53:05 -06:00
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Say yes here to support GPIO interface on Intel Poulsbo SCH
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or Intel Tunnel Creek processor.
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2010-03-02 02:48:55 -07:00
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The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
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powered by the core power rail and are turned off during sleep
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modes (S3 and higher). The remaining four GPIOs are powered by
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the Intel SCH suspend power supply. These GPIOs remain
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active during S3. The suspend powered GPIOs can be used to wake the
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system from the Suspend-to-RAM state.
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2011-03-14 04:53:05 -06:00
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The Intel Tunnel Creek processor has 5 GPIOs powered by the
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core power rail and 9 from suspend power supply.
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2010-03-02 02:48:55 -07:00
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2010-09-30 14:55:48 -06:00
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config GPIO_VX855
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tristate "VIA VX855/VX875 GPIO"
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2011-05-20 00:40:17 -06:00
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depends on MFD_SUPPORT && PCI
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2010-09-30 14:55:48 -06:00
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select MFD_CORE
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select MFD_VX855
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help
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Support access to the VX855/VX875 GPIO lines through the gpio library.
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This driver provides common support for accessing the device,
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additional drivers must be enabled in order to use the
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functionality of the device.
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2008-02-04 23:28:17 -07:00
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comment "I2C GPIO expanders:"
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2010-03-05 14:44:33 -07:00
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config GPIO_MAX7300
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tristate "Maxim MAX7300 GPIO expander"
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depends on I2C
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select GPIO_MAX730X
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help
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GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
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2008-07-25 02:46:14 -06:00
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config GPIO_MAX732X
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tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
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depends on I2C
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help
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Say yes here to support the MAX7319, MAX7320-7327 series of I2C
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Port Expanders. Each IO port on these chips has a fixed role of
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Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
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Input and Output (designed by 'P'). The combinations are listed
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below:
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8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
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max7322 (4I4O), max7323 (4P4O)
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16 bits: max7324 (8I8O), max7325 (8P8O),
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max7326 (4I12O), max7327 (4P12O)
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Board setup code must specify the model to use, and the start
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number for these GPIOs.
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2010-05-26 15:42:16 -06:00
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config GPIO_MAX732X_IRQ
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bool "Interrupt controller support for MAX732x"
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depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
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help
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Say yes here to enable the max732x to be used as an interrupt
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controller. It requires the driver to be built in the kernel.
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2008-02-06 02:39:03 -07:00
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config GPIO_PCA953X
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2009-01-06 15:42:27 -07:00
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tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
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2008-02-04 23:28:26 -07:00
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depends on I2C
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help
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2008-07-04 10:59:37 -06:00
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Say yes here to provide access to several register-oriented
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SMBus I/O expanders, made mostly by NXP or TI. Compatible
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models include:
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4 bits: pca9536, pca9537
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2009-01-06 15:42:27 -07:00
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8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
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tca6408
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2008-07-04 10:59:37 -06:00
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2009-01-06 15:42:27 -07:00
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16 bits: pca9535, pca9539, pca9555, tca6416
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2008-02-04 23:28:26 -07:00
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2010-03-05 14:44:36 -07:00
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config GPIO_PCA953X_IRQ
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bool "Interrupt controller support for PCA953x"
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depends on GPIO_PCA953X=y
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help
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Say yes here to enable the pca953x to be used as an interrupt
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controller. It requires the driver to be built in the kernel.
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2008-02-04 23:28:24 -07:00
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config GPIO_PCF857X
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2008-07-21 15:21:34 -06:00
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tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
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2008-02-04 23:28:24 -07:00
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depends on I2C
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help
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Say yes here to provide access to most "quasi-bidirectional" I2C
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|
|
|
|
GPIO expanders used for additional digital outputs or inputs.
|
|
|
|
|
Most of these parts are from NXP, though TI is a second source for
|
|
|
|
|
some of them. Compatible models include:
|
|
|
|
|
|
|
|
|
|
8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
|
2008-07-21 15:21:34 -06:00
|
|
|
pca9670, pca9672, pca9674, pca9674a,
|
|
|
|
|
max7328, max7329
|
2008-02-04 23:28:24 -07:00
|
|
|
|
|
|
|
|
16 bits: pcf8575, pcf8575c, pca8575,
|
|
|
|
|
pca9671, pca9673, pca9675
|
|
|
|
|
|
|
|
|
|
Your board setup code will need to declare the expanders in
|
|
|
|
|
use, and assign numbers to the GPIOs they expose. Those GPIOs
|
|
|
|
|
can then be used from drivers and other kernel code, just like
|
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|
|
|
other GPIOs, but only accessible from task contexts.
|
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|
|
|
|
|
|
|
|
This driver provides an in-kernel interface to those GPIOs using
|
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|
|
|
platform-neutral GPIO calls.
|
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|
|
|
|
2010-08-10 19:02:27 -06:00
|
|
|
config GPIO_SX150X
|
|
|
|
|
bool "Semtech SX150x I2C GPIO expander"
|
|
|
|
|
depends on I2C=y
|
|
|
|
|
default n
|
|
|
|
|
help
|
|
|
|
|
Say yes here to provide support for Semtech SX150-series I2C
|
|
|
|
|
GPIO expanders. Compatible models include:
|
|
|
|
|
|
|
|
|
|
8 bits: sx1508q
|
|
|
|
|
16 bits: sx1509q
|
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|
|
|
2010-07-02 05:22:09 -06:00
|
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|
config GPIO_STMPE
|
|
|
|
|
bool "STMPE GPIOs"
|
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|
|
|
depends on MFD_STMPE
|
|
|
|
|
help
|
|
|
|
|
This enables support for the GPIOs found on the STMPE I/O
|
|
|
|
|
Expanders.
|
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|
|
|
2010-12-12 21:03:13 -07:00
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|
config GPIO_TC3589X
|
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|
|
|
bool "TC3589X GPIOs"
|
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|
|
|
depends on MFD_TC3589X
|
2010-05-10 15:43:47 -06:00
|
|
|
help
|
2010-12-12 21:03:13 -07:00
|
|
|
This enables support for the GPIOs found on the TC3589X
|
2010-05-10 15:43:47 -06:00
|
|
|
I/O Expander.
|
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|
|
|
|
2011-06-09 13:50:19 -06:00
|
|
|
config GPIO_TPS65912
|
|
|
|
|
tristate "TI TPS65912 GPIO"
|
|
|
|
|
depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
|
|
|
|
|
help
|
|
|
|
|
This driver supports TPS65912 gpio chip
|
|
|
|
|
|
2008-10-20 15:51:46 -06:00
|
|
|
config GPIO_TWL4030
|
|
|
|
|
tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
|
|
|
|
|
depends on TWL4030_CORE
|
|
|
|
|
help
|
|
|
|
|
Say yes here to access the GPIO signals of various multi-function
|
|
|
|
|
power management chips from Texas Instruments.
|
|
|
|
|
|
2009-07-27 07:46:00 -06:00
|
|
|
config GPIO_WM831X
|
|
|
|
|
tristate "WM831x GPIOs"
|
|
|
|
|
depends on MFD_WM831X
|
|
|
|
|
help
|
|
|
|
|
Say yes here to access the GPIO signals of WM831x power management
|
|
|
|
|
chips from Wolfson Microelectronics.
|
|
|
|
|
|
2010-01-07 09:10:08 -07:00
|
|
|
config GPIO_WM8350
|
|
|
|
|
tristate "WM8350 GPIOs"
|
|
|
|
|
depends on MFD_WM8350
|
|
|
|
|
help
|
|
|
|
|
Say yes here to access the GPIO signals of WM8350 power management
|
|
|
|
|
chips from Wolfson Microelectronics.
|
|
|
|
|
|
2010-01-29 11:20:30 -07:00
|
|
|
config GPIO_WM8994
|
|
|
|
|
tristate "WM8994 GPIOs"
|
|
|
|
|
depends on MFD_WM8994
|
|
|
|
|
help
|
|
|
|
|
Say yes here to access the GPIO signals of WM8994 audio hub
|
|
|
|
|
CODECs from Wolfson Microelectronics.
|
|
|
|
|
|
2009-09-22 17:46:39 -06:00
|
|
|
config GPIO_ADP5520
|
|
|
|
|
tristate "GPIO Support for ADP5520 PMIC"
|
|
|
|
|
depends on PMIC_ADP5520
|
|
|
|
|
help
|
|
|
|
|
This option enables support for on-chip GPIO found
|
|
|
|
|
on Analog Devices ADP5520 PMICs.
|
|
|
|
|
|
2010-01-08 15:43:08 -07:00
|
|
|
config GPIO_ADP5588
|
|
|
|
|
tristate "ADP5588 I2C GPIO expander"
|
|
|
|
|
depends on I2C
|
|
|
|
|
help
|
|
|
|
|
This option enables support for 18 GPIOs found
|
|
|
|
|
on Analog Devices ADP5588 GPIO Expanders.
|
|
|
|
|
|
2010-10-27 16:33:19 -06:00
|
|
|
config GPIO_ADP5588_IRQ
|
|
|
|
|
bool "Interrupt controller support for ADP5588"
|
|
|
|
|
depends on GPIO_ADP5588=y
|
|
|
|
|
help
|
|
|
|
|
Say yes here to enable the adp5588 to be used as an interrupt
|
|
|
|
|
controller. It requires the driver to be built in the kernel.
|
|
|
|
|
|
2008-07-25 02:46:10 -06:00
|
|
|
comment "PCI GPIO expanders:"
|
|
|
|
|
|
2009-12-14 19:00:32 -07:00
|
|
|
config GPIO_CS5535
|
|
|
|
|
tristate "AMD CS5535/CS5536 GPIO support"
|
2011-04-07 16:51:15 -06:00
|
|
|
depends on PCI && X86 && !CS5535_GPIO && MFD_CS5535
|
2009-12-14 19:00:32 -07:00
|
|
|
help
|
|
|
|
|
The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
|
|
|
|
|
can be used for quite a number of things. The CS5535/6 is found on
|
|
|
|
|
AMD Geode and Lemote Yeeloong devices.
|
|
|
|
|
|
|
|
|
|
If unsure, say N.
|
|
|
|
|
|
2008-07-25 02:46:10 -06:00
|
|
|
config GPIO_BT8XX
|
|
|
|
|
tristate "BT8XX GPIO abuser"
|
|
|
|
|
depends on PCI && VIDEO_BT848=n
|
|
|
|
|
help
|
|
|
|
|
The BT8xx frame grabber chip has 24 GPIO pins than can be abused
|
|
|
|
|
as a cheap PCI GPIO card.
|
|
|
|
|
|
|
|
|
|
This chip can be found on Miro, Hauppauge and STB TV-cards.
|
|
|
|
|
|
|
|
|
|
The card needs to be physically altered for using it as a
|
|
|
|
|
GPIO card. For more information on how to build a GPIO card
|
|
|
|
|
from a BT8xx TV card, see the documentation file at
|
|
|
|
|
Documentation/bt8xxgpio.txt
|
|
|
|
|
|
|
|
|
|
If unsure, say N.
|
|
|
|
|
|
2009-09-22 17:46:36 -06:00
|
|
|
config GPIO_LANGWELL
|
2010-05-26 15:42:25 -06:00
|
|
|
bool "Intel Langwell/Penwell GPIO support"
|
2011-03-17 13:32:46 -06:00
|
|
|
depends on PCI && X86
|
2009-09-22 17:46:36 -06:00
|
|
|
help
|
2010-05-26 15:42:25 -06:00
|
|
|
Say Y here to support Intel Langwell/Penwell GPIO.
|
2009-09-22 17:46:36 -06:00
|
|
|
|
2010-10-27 16:33:21 -06:00
|
|
|
config GPIO_PCH
|
2011-05-09 04:58:49 -06:00
|
|
|
tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
|
2011-03-17 13:32:46 -06:00
|
|
|
depends on PCI && X86
|
2010-10-27 16:33:21 -06:00
|
|
|
help
|
|
|
|
|
This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
|
|
|
|
|
which is an IOH(Input/Output Hub) for x86 embedded processor.
|
|
|
|
|
This driver can access PCH GPIO device.
|
|
|
|
|
|
2011-05-09 04:58:49 -06:00
|
|
|
This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
|
|
|
|
|
Output Hub), ML7223.
|
|
|
|
|
ML7223 IOH is for MP(Media Phone) use.
|
|
|
|
|
ML7223 is companion chip for Intel Atom E6xx series.
|
|
|
|
|
ML7223 is completely compatible for Intel EG20T PCH.
|
|
|
|
|
|
2011-01-12 18:00:22 -07:00
|
|
|
config GPIO_ML_IOH
|
|
|
|
|
tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
|
|
|
|
|
depends on PCI
|
|
|
|
|
help
|
|
|
|
|
ML7213 is companion chip for Intel Atom E6xx series.
|
|
|
|
|
This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
|
|
|
|
|
Hub) which is for IVI(In-Vehicle Infotainment) use.
|
|
|
|
|
This driver can access the IOH's GPIO device.
|
|
|
|
|
|
2009-12-15 17:46:18 -07:00
|
|
|
config GPIO_TIMBERDALE
|
|
|
|
|
bool "Support for timberdale GPIO IP"
|
2011-05-20 00:40:17 -06:00
|
|
|
depends on MFD_TIMBERDALE && HAS_IOMEM
|
2009-12-15 17:46:18 -07:00
|
|
|
---help---
|
|
|
|
|
Add support for the GPIO IP in the timberdale FPGA.
|
|
|
|
|
|
2010-03-20 18:06:09 -06:00
|
|
|
config GPIO_RDC321X
|
|
|
|
|
tristate "RDC R-321x GPIO support"
|
2011-05-20 00:40:17 -06:00
|
|
|
depends on PCI
|
2011-01-12 18:00:21 -07:00
|
|
|
select MFD_SUPPORT
|
2010-05-11 14:24:20 -06:00
|
|
|
select MFD_CORE
|
2010-03-20 18:06:09 -06:00
|
|
|
select MFD_RDC321X
|
|
|
|
|
help
|
|
|
|
|
Support for the RDC R321x SoC GPIOs over southbridge
|
|
|
|
|
PCI configuration space.
|
|
|
|
|
|
2008-02-04 23:28:17 -07:00
|
|
|
comment "SPI GPIO expanders:"
|
|
|
|
|
|
2008-07-21 15:21:34 -06:00
|
|
|
config GPIO_MAX7301
|
|
|
|
|
tristate "Maxim MAX7301 GPIO expander"
|
|
|
|
|
depends on SPI_MASTER
|
2010-03-05 14:44:33 -07:00
|
|
|
select GPIO_MAX730X
|
2008-07-21 15:21:34 -06:00
|
|
|
help
|
2010-03-05 14:44:33 -07:00
|
|
|
GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
|
2008-07-21 15:21:34 -06:00
|
|
|
|
2008-02-04 23:28:25 -07:00
|
|
|
config GPIO_MCP23S08
|
mcp23s08: add i2c support
Add i2c bindings for the mcp230xx devices. This is quite a lot simpler
than the spi one as there's no funky sub addressing done (one struct
i2c_client per struct gpio_chip).
The mcp23s08_platform_data structure is reused for i2c, even though
only a single mcp23s08_chip_info structure is needed.
To use, simply fill out a platform_data structure and pass it in
i2c_board_info, E.G.:
static const struct mcp23s08_platform_data mcp23017_data = {
.chip[0] = {
.pullups = 0x00ff,
},
.base = 240,
};
static struct i2c_board_info __initdata i2c_devs[] = {
{ I2C_BOARD_INFO("mcp23017", 0x20),
.platform_data = &smartview_mcp23017_data, },
...
};
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15 02:25:32 -06:00
|
|
|
tristate "Microchip MCP23xxx I/O expander"
|
|
|
|
|
depends on SPI_MASTER || I2C
|
2008-02-04 23:28:25 -07:00
|
|
|
help
|
mcp23s08: add i2c support
Add i2c bindings for the mcp230xx devices. This is quite a lot simpler
than the spi one as there's no funky sub addressing done (one struct
i2c_client per struct gpio_chip).
The mcp23s08_platform_data structure is reused for i2c, even though
only a single mcp23s08_chip_info structure is needed.
To use, simply fill out a platform_data structure and pass it in
i2c_board_info, E.G.:
static const struct mcp23s08_platform_data mcp23017_data = {
.chip[0] = {
.pullups = 0x00ff,
},
.base = 240,
};
static struct i2c_board_info __initdata i2c_devs[] = {
{ I2C_BOARD_INFO("mcp23017", 0x20),
.platform_data = &smartview_mcp23017_data, },
...
};
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15 02:25:32 -06:00
|
|
|
SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
|
|
|
|
|
I/O expanders.
|
2011-03-09 09:56:30 -07:00
|
|
|
This provides a GPIO interface supporting inputs and outputs.
|
2008-02-04 23:28:25 -07:00
|
|
|
|
2009-09-22 17:46:34 -06:00
|
|
|
config GPIO_MC33880
|
|
|
|
|
tristate "Freescale MC33880 high-side/low-side switch"
|
|
|
|
|
depends on SPI_MASTER
|
|
|
|
|
help
|
|
|
|
|
SPI driver for Freescale MC33880 high-side/low-side switch.
|
|
|
|
|
This provides GPIO interface supporting inputs and outputs.
|
|
|
|
|
|
2010-10-27 16:33:18 -06:00
|
|
|
config GPIO_74X164
|
|
|
|
|
tristate "74x164 serial-in/parallel-out 8-bits shift register"
|
|
|
|
|
depends on SPI_MASTER
|
|
|
|
|
help
|
|
|
|
|
Platform driver for 74x164 compatible serial-in/parallel-out
|
|
|
|
|
8-outputs shift registers. This driver can be used to provide access
|
|
|
|
|
to more gpio outputs.
|
|
|
|
|
|
2009-09-22 17:46:35 -06:00
|
|
|
comment "AC97 GPIO expanders:"
|
|
|
|
|
|
|
|
|
|
config GPIO_UCB1400
|
|
|
|
|
bool "Philips UCB1400 GPIO"
|
|
|
|
|
depends on UCB1400_CORE
|
|
|
|
|
help
|
|
|
|
|
This enables support for the Philips UCB1400 GPIO pins.
|
|
|
|
|
The UCB1400 is an AC97 audio codec.
|
|
|
|
|
|
2010-04-07 02:08:01 -06:00
|
|
|
comment "MODULbus GPIO expanders:"
|
|
|
|
|
|
|
|
|
|
config GPIO_JANZ_TTL
|
|
|
|
|
tristate "Janz VMOD-TTL Digital IO Module"
|
|
|
|
|
depends on MFD_JANZ_CMODIO
|
|
|
|
|
help
|
|
|
|
|
This enables support for the Janz VMOD-TTL Digital IO module.
|
|
|
|
|
This driver provides support for driving the pins in output
|
|
|
|
|
mode only. Input mode is not supported.
|
|
|
|
|
|
2011-06-04 18:38:28 -06:00
|
|
|
config GPIO_AB8500
|
2011-02-08 22:32:35 -07:00
|
|
|
bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
|
2011-03-28 20:02:50 -06:00
|
|
|
depends on AB8500_CORE && BROKEN
|
2011-02-08 22:32:35 -07:00
|
|
|
help
|
|
|
|
|
Select this to enable the AB8500 IC GPIO driver
|
2011-05-16 17:35:37 -06:00
|
|
|
|
|
|
|
|
config GPIO_TPS65910
|
|
|
|
|
bool "TPS65910 GPIO"
|
|
|
|
|
depends on MFD_TPS65910
|
|
|
|
|
help
|
|
|
|
|
Select this option to enable GPIO driver for the TPS65910
|
|
|
|
|
chip family.
|
2008-07-25 02:46:11 -06:00
|
|
|
endif
|
