On Tue, July 27, 2010 03:41, Zhenyu Wang wrote: > On 2010.07.26 20:36:49 +0200, David Härdeman wrote: >> Hi, >> >> I'm trying to play with some different AVI InfoFrame settings for the >> HDMI output on my DG45FC (G45 Intel graphics hardware, HDMI connector on >> the motherboard) but I can't seem to find any references to it in the >> i915 driver or in the programming specs. >> >> drivers/gpu/drm/i915/intel_sdvo.c has code for setting an avi infoframe >> for hdmi outputs, but it doesn't seem to be used on my board (I tried >> sprinkling some printk's in there). I guess it's only for ADD2 type >> addon boards? >> >> So far I'm guessing that drivers/gpu/drm/i915/intel_hdmi.c is >> responsible but there is no code in there that deals with the avi >> infoframe and I haven't been able to find anything in the programming >> manuals from the intel linux graphics website. >> >> Could anyone point me in the right direction? >> >> And on a related note, does anyone know if the hardware supports HDMI >> CEC and where I might find the relevant hardware documentation? >> > > We don't have AVI infoframe support for native HDMI port now. > Looks our public doc missed register info for VIDEO_DIP_CTL/DATA, > that I assume should be used for that. If you have requirement to > support that maybe for some special sink device, I can try to ask > if that info should be updated in the spec.
Thanks for the VIDEO_DIP_CTL/DATA pointer, I found the relevant passages in the docs now (not sure why I didn't find it myself), it's in sections 2.8.8 and 2.8.9 of "Volume 3: Display Registers, Revision 1.0c". The intel_audio_dump tool also seems to dump at least the VIDEO_DIP_CTL part :) -- David Härdeman _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
