[PATCH v1 06/35] drm/connector: Only register TV mode property if present

Maxime Ripard maxime at cerno.tech
Mon Aug 15 03:40:41 PDT 2022


Hi,

On Mon, Aug 08, 2022 at 02:49:08PM +0200, Noralf Trønnes wrote:
> Den 29.07.2022 18.34, skrev Maxime Ripard:
> > The drm_create_tv_properties() will create the TV mode property
> > unconditionally.
> > 
> > However, since we'll gradually phase it out, let's register it only if we
> > have a list passed as an argument. This will make the transition easier.
> > 
> > Signed-off-by: Maxime Ripard <maxime at cerno.tech>
> > 
> 
> I don't understand why this makes the transition easier, but if you
> think so:

So the basic idea behind this series was to introduce the new property,
gradually convert the old drivers to the new one, and finally remove the
old one.

In order to keep the backward compatibility, we need to add to the
drivers some custom get/set_property hook to expose the old property and
fill the new one if needed.

That means that each driver would have to create the old property, which
will conflict with that code

Maxime
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