Re: [v1 0/6] Enable HDR on MCA LSPCON based Gen9 devices

Ville Syrjälä
2019-10-16T13:18:06Z

On Wed, Oct 16, 2019 at 04:02:43PM +0530, Uma Shankar wrote:
> Gen9 hardware supports HDMI2.0 through LSPCON chips. Extending HDR
> support for MCA LSPCON based GEN9 devices.

Couple of general comments about the LSPCON stuff.

a) we need infoframe readout support
b) we need to stop sending infoframes to DVI sinks
c) we need to figure out how to disable the AVI infoframe
once enabled (if it doesn't get automagically disabled
when do a modeset), because otherwise when we switch
displays from HDMI to DVI we will still send the infoframe
to the DVI sink

I think those should be fixed first before we add more
infoframes to the mix.

Also if we use the SDP stuff for the HDR infoframe we should
just integrate it properly with the already existing DP HDR
metadata stuff. And we need to add readout support for that.

--
Ville Syrjälä
Intel