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

Paulo Zanoni przanoni at gmail.com
Fri Jan 27 17:25:49 CET 2012

Ok, so I had to look at the Windows registers again...

Your "interlaced" branch had 6 patches. Patch 3 is the only one I
changed. Here is my version:
Now my monitor reports "1080i" :)

Some notes about the patch:

- I really like your solution of not using CRTC_INTERLACE_HALVE_V,
because previously we were dividing by 2 and then multiplying by 2
again, which would not restore the original values in case of odd

- I'm not sure about the change inside drm_modes.c. Why do we need the
"|= 1"? I fear it could cause us some troubles. This change might also
break the other drivers, of course. Wel'll need a "v4".

- It seems we need vtotal-- and vblank_end--. We need to find evidence
for that in the documentation. I'm just copying Windows

- I tested only on SNB. This time the screen looks good (previous
versions were really ugly). I'll test ilk and report if something goes


Paulo Zanoni

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