linux-kernel - Re: [PATCH 8/8] drm/bridge: it66121: Allow link this driver as a lib

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Message-ID: <CAA8EJprU7+Pwkxb+mHjv52V8Gbgkw--u+xSyEOAM78DN9E+92Q@mail.gmail.com>
Date:   Mon, 20 Nov 2023 12:06:22 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Sui Jingfeng <sui.jingfeng@...ux.dev>
Cc:     Phong LE <ple@...libre.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Maxime Ripard <mripard@...nel.org>,
        Sui Jingfeng <suijingfeng@...ngson.cn>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Subject: Re: [PATCH 8/8] drm/bridge: it66121: Allow link this driver as a lib

On Fri, 17 Nov 2023 at 19:36, Sui Jingfeng <sui.jingfeng@...ux.dev> wrote:
>
> Hi,
>
>
> On 2023/11/17 17:03, Dmitry Baryshkov wrote:
> > On Fri, 17 Nov 2023 at 06:24, Sui Jingfeng <sui.jingfeng@...ux.dev> wrote:
> >> Hi,
> >>
> >> On 2023/11/16 23:23, Dmitry Baryshkov wrote:
> >>>>>> Then you will need some way (fwnode?) to
> >>>>>> discover the bridge chain. And at the last point you will get into the
> >>>>>> device data and/or properties business.
> >>>>>>
> >>>>> No, leave that chance to a more better programmer and forgive me please,
> >>>>> too difficult, I'm afraid of not able to solve. Thanks a lot for the
> >>>>> trust!
> >>>   From my point of view: no.
> >>
> >> I respect the fact that the community prefer generic mechanisms.
> >> If our approach is not what the community want, can I switch back
> >> to my previous solution? I can reduce the duplication of our
> >> localized it66121 driver to a minimal, rewrite it until it meets
> >> the community's requirement. I know our device looks weird and
> >> our approach is not elegant. But at the very least, we could not
> >> mess the community's design up by localize. Otherwise, I don't know
> >> what is the better approach to solve such a problem.
> >>
> >> Can I switch back or any other ideas?
> > I keep on repeating: create the i2c device from your root device
> > driver, which parses BIOS data.
>
>
> You didn't focus on solve the problem, You are focus on solving me.
> How does the method that parsing BIOS data can be generic and applied
> universally?

Parsing BIOS data is unique to your platform (as well as your BIOS
tables). However using and extending (instead of replacing it just for
your platform) is a generic item.

-- 
With best wishes
Dmitry