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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Changing the "Broadcast RGB" property does not update the AVI InfoFrame"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111572#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Changing the "Broadcast RGB" property does not update the AVI InfoFrame"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111572">bug 111572</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>(In reply to Lakshmi from <a href="show_bug.cgi?id=111572#c4">comment #4</a>)
<span class="quote">> (In reply to Ville Syrjala from <a href="show_bug.cgi?id=111572#c3">comment #3</a>)
> > (In reply to Hans Verkuil from <a href="show_bug.cgi?id=111572#c2">comment #2</a>)
> > > Created <span class=""><a href="attachment.cgi?id=145322" name="attach_145322" title="Log with drm.debug=0x1e when setting Broadcast RGB">attachment 145322</a> <a href="attachment.cgi?id=145322&action=edit" title="Log with drm.debug=0x1e when setting Broadcast RGB">[details]</a></span>
> > > Log with drm.debug=0x1e when setting Broadcast RGB
> > >
> > > Attached is prop.log. I added a pr_info in
> > > intel_digital_connector_atomic_set_property() when the Broadcast RGB
> > > property changes ("HV: set broadcast_rgb to 1").
> > >
> > > Note that I'm testing on an Intel NUC7i5BNB where DP-1 is a DP-to-HDMI
> > > branch device (MegaChips 2800). So it is not a native HDMI device.
> > >
> > > I'm happy to test more if needed.
> >
> > Ah LSPCON. Yeah that's probably borked because we have no readout and hence
> > the infoframe state checker isn't hooked up either, and so the code doesn't
> > realize it needs a full modeset to update the infoframe. Not the only
> > problem in the LSPCON code unfortunately.
>
> Swati/Shshank, Latest/upcoming FW will help here?</span >
Firmware is no help here. The code needs to:
- precompute the infoframes properly
- read out the infoframe so that the state checker will work
- add a mechanims by which we can disable the infoframe (because I suspect
currnely it's sending infoframes to DVI sinks)</pre>
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