[PATCH v2 00/13] drm: Add generic helpers for HDMI scrambling

[Maxime Ripard]

Hi Daniel,

On Fri, Nov 19, 2021 at 05:01:14PM +0100, Daniel Vetter wrote:
> On Thu, Nov 18, 2021 at 11:38:01AM +0100, Maxime Ripard wrote:
> > This is a follow-up of the work to support the interactions between the hotplug
> > and the scrambling support for vc4:
> > 
> > https://lore.kernel.org/dri-devel/20210507150515.257424-11-maxime@cerno.tech/
> > https://lore.kernel.org/dri-devel/20211025152903.1088803-10-maxime@cerno.tech/
> > 
> > Ville feedback was that the same discussion happened some time ago for i915,
> > and resulted in a function to do an full disable/enable cycle on reconnection
> > to avoid breaking the HDMI 2.0 spec.
> > 
> > This series improves the current scrambling support by adding generic helpers
> > for usual scrambling-related operations, and builds upon them to provide a
> > generic alternative to intel_hdmi_reset_link.
> 
> Out of curiosity, can we rebuild intel_hdmi_reset_link on top of these?
> Always better to have two drivers to actually show the helpers help, than
> just one.

Unfortunately, I don't have any Intel system I can test it on, and it
looks like the changes wouldn't be trivial.

Maybe we can use dw-hdmi instead?

Maxime
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