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authorPeter Rosin <peda@axentia.se>2017-05-14 22:51:07 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-03 13:29:26 +0300
commit2c089f08e0de2a784106272c6454ce389fe12376 (patch)
treeb44936274ae0fbbdea400d2867e5693da42bd1fc /drivers/mux/Kconfig
parenta3b02a9c6591ce154cd44e2383406390a45b530c (diff)
downloadlinux-2c089f08e0de2a784106272c6454ce389fe12376.tar.xz
mux: gpio: add mux controller driver for gpio based multiplexers
The driver builds a single multiplexer controller using a number of gpio pins. For N pins, there will be 2^N possible multiplexer states. The GPIO pins can be connected (by the hardware) to several multiplexers, which in that case will be operated in parallel. Reviewed-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Peter Rosin <peda@axentia.se> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mux/Kconfig')
-rw-r--r--drivers/mux/Kconfig18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mux/Kconfig b/drivers/mux/Kconfig
index 23ab2cde83b1..738670aaecb7 100644
--- a/drivers/mux/Kconfig
+++ b/drivers/mux/Kconfig
@@ -14,3 +14,21 @@ menuconfig MULTIPLEXER
To compile the subsystem as a module, choose M here: the module will
be called mux-core.
+
+if MULTIPLEXER
+
+config MUX_GPIO
+ tristate "GPIO-controlled Multiplexer"
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ GPIO-controlled Multiplexer controller.
+
+ The driver builds a single multiplexer controller using a number
+ of gpio pins. For N pins, there will be 2^N possible multiplexer
+ states. The GPIO pins can be connected (by the hardware) to several
+ multiplexers, which in that case will be operated in parallel.
+
+ To compile the driver as a module, choose M here: the module will
+ be called mux-gpio.
+
+endif