On Mon, Aug 05, 2013 at 04:54:06PM +0300, Ville Syrjälä wrote: > On Mon, Aug 05, 2013 at 02:36:47PM +0100, Damien Lespiau wrote: > > >From CEA-861: > > > > Data Byte 1, bit A0 indicates whether Active Format Data is present in > > Data Byte 2 bits R3 through R0. A source device shall set A0=1 when > > any of the AFD bits are set. > > > > ie. if we want to set active_aspect, we need to set the > > active_info_valid bit to 1 as well. > > > > Cc: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx> > > Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx> > > Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > But why don't we just kill active_info_valid and instead just > check active_aspect in hdmi_avi_infoframe_pack()? Right, so I thought about that, I'd love to have an API that doesn't allow its user to do something wrong. My reflections so far: 1/ I did not want to depend on a fix that was outside of the drm/ directory for people that pull that directory between different kernels, they will end up missing the patch in video/hdmi.c. On the other hand, we could just tell people to sync drivers/video/hdmi.c and include/linux/hdmi.h along with drm/. 2/ I was thinking that killing the _valid bits in the hdmi_avi_infoframe struct would not allow an _unpack() function that can check if the infoframe was valid. Probably thinking too much though... -- Damien _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
