linux-kernel - Re: rotary encoder linux driver

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Message-ID: <87tx366zla.fsf@gmail.com>
Date:	Tue, 14 Oct 2014 18:44:33 -0400
From:	Ben Gamari <bgamari.foss@...il.com>
To:	tecfacet <tecfacet@...oo.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>
Subject: Re: rotary encoder linux driver

Johan Hovold <johan@...nel.org> 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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