From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> I was readin the infoframe code a bit today, and noticed that g4x can't transmit infoframes to more than one port, even though it can have two HDMI/DVI ports. So I decided to "fix" it by making it work on a first come, first served basis. This at least makes it reasonable to have a HDMI + DVI monitors hooked up to the same machine w/o the DVI clobbering the HDMI infoframes. Tested quickly on an ELK w/ HDMI and DVI monitors attached. If we allowed HDMI cloning, we'd have a similar problem on PCH platforms since the DIP stuff lives on the transcoder. But we don't allow that currently so I left the code alone. Also a quick gander at IBX spec says that feeding multiple HDMI ports from the same transcoder isn't supported. But I suspect that might be exactly because of this infoframe issue. I've not asked for clarification on that, nor have I tried HDMI cloning on PCH yet. Maybe I'll do that at some point if I get bored :) Ville Syrjälä (3): drm/i915: Add encoder .off() hook drm/i915: Convert DIP port switch cases to a simple macro drm/i915: Make infoframe trnsmission more reliable on g4x drivers/gpu/drm/i915/i915_reg.h | 4 +-- drivers/gpu/drm/i915/intel_display.c | 5 +++ drivers/gpu/drm/i915/intel_drv.h | 1 + drivers/gpu/drm/i915/intel_hdmi.c | 63 +++++++++++++++++++----------------- 4 files changed, 40 insertions(+), 33 deletions(-) -- 1.8.3.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
