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linux-next/include/linux/rotary_encoder.h
Ezequiel Garcia 3a341a4c30 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 Martínez <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>
2015-10-16 15:32:18 -07:00

18 lines
362 B
C

#ifndef __ROTARY_ENCODER_H__
#define __ROTARY_ENCODER_H__
struct rotary_encoder_platform_data {
unsigned int steps;
unsigned int axis;
unsigned int gpio_a;
unsigned int gpio_b;
unsigned int inverted_a;
unsigned int inverted_b;
unsigned int steps_per_period;
bool relative_axis;
bool rollover;
bool wakeup_source;
};
#endif /* __ROTARY_ENCODER_H__ */