linux-kernel - Re: [PATCH v1 2/2] drm/panel-simple: Add missing BUS descriptions for some panels

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Message-ID: <20200628085330.GA132428@ravnborg.org>
Date:   Sun, 28 Jun 2020 10:53:30 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] drm/panel-simple: Add missing BUS descriptions
 for some panels

On Sun, Jun 28, 2020 at 11:02:53AM +0300, Laurent Pinchart wrote:
> Hi Sam,
> 
> > We should also clean up all the DRM_BUS_FLAG_* one day.
> > No need for the deprecated values, so a few files needs an update.
> > And we could document what flags makes sense for LVDS etc.
> 
> Where would you add that documentation ? The hardest part is to find a
> place that will be noticed by developers :-)
I will try to extend drm_bus_flags documentation in drm_connector.h
And then add a few comments in panel-simple as well.

	Sam
> 
> I've just submitted a patch that adds a WARN_ON to catch similar issues
> in the panel-simple driver. It's not ideal as we really shouldn't have
> such code in the kernel, this is something that should be caught as part
> of the integration process.

> 
> > On the TODO list...
> >
> > >>> The rest looks good, except the Samsung panel for which I haven't been
> > >>> able to locate a datasheet.
> > >>> 
> > >>> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> 
> -- 
> Regards,
> 
> Laurent Pinchart