linux-kernel - Re: [PATCHv3 0/4] Wiegand bus driver and GPIO bitbanged controller

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Date:   Sun, 12 Mar 2023 13:19:52 +0300
From:   Evgeny Boger <boger@...enboard.com>
To:     m.zatovic1@...il.com
Cc:     airlied@...hat.com, andriy.shevchenko@...el.com, arnd@...db.de,
        axboe@...nel.dk, benjamin.tissoires@...hat.com, bvanassche@....org,
        dan.j.williams@...el.com, devicetree@...r.kernel.org,
        dipenp@...dia.com, fmdefrancesco@...il.com,
        furong.zhou@...ux.intel.com, gregkh@...uxfoundation.org,
        jacek.lawrynowicz@...ux.intel.com,
        krzysztof.kozlowski+dt@...aro.org, linus.walleij@...aro.org,
        linux-kernel@...r.kernel.org, linux@...y.sk, masahiroy@...nel.org,
        mathieu.poirier@...aro.org, mwen@...lia.com, ogabbay@...nel.org,
        robh+dt@...nel.org, treding@...dia.com, yangyicong@...ilicon.com
Subject: Re: [PATCHv3 0/4] Wiegand bus driver and GPIO bitbanged controller

Hi Martin,

Thank you for you work!  I'm currently working on Wiegand *receiver* 
kernel driver, and hopefully we can make both sending and receiving 
Wiegand implementation in kernel.

I tried to read all the discussion for the previous series, but still 
don't quite understand why do we need the infrastructure to be that 
complex. I mean Wiegand is point-to-point connection, so why do we even 
need bus/controller/device abstractions at all? There will be always 
just the single device per controller, right?

-- 
Kind regards,
Evgeny Boger
CTO @ Wiren Board