[Intel-gfx] [PATCH 0/4] [CFT] interlaced support

Daniel Vetter daniel at ffwll.ch
Fri Jan 27 11:22:21 CET 2012

On Fri, Jan 27, 2012 at 12:56:23AM -0200, Paulo Zanoni wrote:
> Hi
> 2012/1/26 Daniel Vetter <daniel.vetter at ffwll.ch>:
> > Hi all,
> >
> > http://cgit.freedesktop.org/~danvet/drm/log/?h=interlaced
> >
> I just tested your patch set and it didn't work: my monitor reported
> 1920x539 at 50Hz. We're missing something from patch "fixup interlace
> vertical timings confusion". The reg dump is attached.
> By the way, VTOTAL_B was 1078. We need to remove those "-1" and also
> those "-2". Look at ironlake_crtc_mode_set: we already do the
> subtractions when we write to HSYNC, HTOTAL, etc. From the register
> descriptions, those -1 are independent of interlaced or
> non-interlaced. I believe there was some confusion with these
> registers because intel_reg_dumper already re-adds +1 when showing the
> register values.

Ok, so something is still botched up :( Btw I think VSYNCSHIFT is only
used by analog outputs to place the 2nd field lines exactly between the
lines of the 1st field. Can you also please attach a reg dump with Peter's
patch so I can compare?

Thanks, Daniel
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48

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