Input: rotary_encoder - add support for REL_* axes
The rotary encoder driver only supports returning input events
for ABS_* axes, this adds support for REL_* axes. The relative
axis input event is reported as -1 for each counter-clockwise
step and +1 for each clockwise step.
The ability to clamp the position of ABS_* axes between 0 and
a maximum of "steps" has also been added.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/rotary_encoder.h b/include/linux/rotary_encoder.h
index 12d63a3..215278b 100644
--- a/include/linux/rotary_encoder.h
+++ b/include/linux/rotary_encoder.h
@@ -8,6 +8,8 @@
unsigned int gpio_b;
unsigned int inverted_a;
unsigned int inverted_b;
+ bool relative_axis;
+ bool rollover;
};
#endif /* __ROTARY_ENCODER_H__ */