Input: rotary-encoder - add support for quarter-period mode
Some encoders have both outputs low in stable states, others also have
a stable state with both outputs high (half-period mode) and some have
a stable state in all steps (quarter-period mode). The driver used to
support the former states and with this change it can also support the
later.
This commit also deprecates the 'half-period' property and introduces
a new property 'steps-per-period'. This property specifies the
number of steps (stable states) produced by the rotary encoder
for each GPIO period.
Signed-off-by: Guido MartÃnez <guido@vanguardiasur.com.ar>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/include/linux/rotary_encoder.h b/include/linux/rotary_encoder.h
index b33f2d2..fe3dc64 100644
--- a/include/linux/rotary_encoder.h
+++ b/include/linux/rotary_encoder.h
@@ -8,9 +8,9 @@
unsigned int gpio_b;
unsigned int inverted_a;
unsigned int inverted_b;
+ unsigned int steps_per_period;
bool relative_axis;
bool rollover;
- bool half_period;
bool wakeup_source;
};