Re: rotary encoder linux driver

From: Ben Gamari
Date: Tue Oct 14 2014 - 18:44:43 EST


Johan Hovold <johan@xxxxxxxxxx> writes:

> On Sun, Oct 12, 2014 at 06:29:03PM -0700, tecfacet wrote:
>> Hello.
>>
>> I am interested in the rotary encoder kernel driver. I am very new to
>> this linux kernel driver thing.
>>
>> How do I pass the gpio and interrupt stuff to the kernel module.. I
>> think it is thru the rotary_encoder.h file.. am I correct?
>
> That should be done through the device tree these days. The binding is
> documented in
>
> Documentation/devicetree/bindings/input/rotary-encoder.txt
>
> in the kernel source tree.
>
You may also be interested in the device tree for a BeagleBone cape that
I recently brought up which includes an encoder,

https://github.com/bgamari/dtb-rebuilder/blob/heaterbone-3.14/src/arm/heater-bone.dtsi#L248

Cheers,

- Ben

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