On Fri, Aug 12, 2016 at 10:22:28AM +0530, Vignesh R wrote: > Add a driver to read group of GPIO lines and provide its status as a > numerical value as input event to the system. This will help in > intefacing devices, that can be connected over GPIOs, that provide input > to the system by driving GPIO lines connected to them like a rotary dial > or a switch. > > For example, a rotary switch can be connected to four GPIO lines. The > status of the GPIO lines reflect the actual position of the rotary > switch dial. For example, if dial points to 9, then the four GPIO lines > connected to the switch will read HLLH(0b'1001 = 9). This value > can be reported as an ABS_* event to the input subsystem. > > Signed-off-by: Vignesh R <vigneshr@xxxxxx> > --- > .../devicetree/bindings/input/gpio-decoder.txt | 23 ++++ > drivers/input/misc/Kconfig | 12 ++ > drivers/input/misc/Makefile | 1 + > drivers/input/misc/gpio_decoder.c | 128 +++++++++++++++++++++ > 4 files changed, 164 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/gpio-decoder.txt > create mode 100644 drivers/input/misc/gpio_decoder.c > > diff --git a/Documentation/devicetree/bindings/input/gpio-decoder.txt b/Documentation/devicetree/bindings/input/gpio-decoder.txt > new file mode 100644 > index 000000000000..efd947f52cb3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/gpio-decoder.txt > @@ -0,0 +1,23 @@ > +* GPIO Decoder DT bindings > + > +Required Properties: > +- compatible: should be "gpio-decoder" > +- gpios: a spec of gpios (atleast two) to be decoded to a number with > + first entry representing the MSB. > + > +Optional Properties: > +- gpio-decoder,max-value: Maximum possible value that can be reported by Just "decoder-max-value". With that, the binding looks fine to me: Acked-by: Rob Herring <robh@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
