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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2016-07-27 14:36:26 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-07-27 18:26:10 -0700 |
| commit | d205a2185938e38c8667405dc44cd6221c71682e (patch) | |
| tree | aa63808e9391f23d9c722b00ed25a411509dc91a /Documentation | |
| parent | f712a5a05228058f6b74635546549d4a46e117fc (diff) | |
| download | linux-0-day-d205a2185938e38c8667405dc44cd6221c71682e.tar.gz linux-0-day-d205a2185938e38c8667405dc44cd6221c71682e.tar.xz | |
Input: rotary_encoder - support binary encoding of states
It's not advisable to use this encoding, but to support existing devices
add support for this to the driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/rotary-encoder.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.txt b/Documentation/devicetree/bindings/input/rotary-encoder.txt index 6c9f0c8a846c8..e85ce3dea4806 100644 --- a/Documentation/devicetree/bindings/input/rotary-encoder.txt +++ b/Documentation/devicetree/bindings/input/rotary-encoder.txt @@ -20,6 +20,8 @@ Optional properties: 2: Half-period mode 4: Quarter-period mode - wakeup-source: Boolean, rotary encoder can wake up the system. +- rotary-encoder,encoding: String, the method used to encode steps. + Supported are "gray" (the default and more common) and "binary". Deprecated properties: - rotary-encoder,half-period: Makes the driver work on half-period mode. @@ -34,6 +36,7 @@ Example: compatible = "rotary-encoder"; gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */ linux,axis = <0>; /* REL_X */ + rotary-encoder,encoding = "gray"; rotary-encoder,relative-axis; }; @@ -42,5 +45,6 @@ Example: gpios = <&gpio 21 0>, <&gpio 22 0>; linux,axis = <1>; /* ABS_Y */ rotary-encoder,steps = <24>; + rotary-encoder,encoding = "binary"; rotary-encoder,rollover; }; |