[Intel-gfx] [PATCH-v2 0/3] drm/i915: interlaced mode support

Jesse Barnes jbarnes at virtuousgeek.org
Wed Jan 18 21:55:15 CET 2012

On Wed, 18 Jan 2012 18:39:40 -0200
Paulo Zanoni <przanoni at gmail.com> wrote:

> Hi
> 2012/1/18 Peter Ross <pross at xvid.org>:
> > This patch set enables enables interlaced mode output on
> > generation 3 and above chipsets.
> I just tested that on HDMI.
> The "interlace_allowed=1" patch seems fine: it made xrandr list more
> modes. But I believe patch 1 is still not correct. I tested that and
> instead of getting a 1920x1080 I got a 1920x1078 mode: vtotal, vblank
> and vsync were wrong. If you look at the patch, you'll see that the
> code has some "something -= 1" statements. I believe they could be
> wrong.
> So I removed these lines and tested again... Now the mode is actually
> 1920x1080, but my monitor's OSD displays it as "1080p". So I also
> tested my TV and it reported "1080p at 25hz" too.
> I guess we're still missing something... I'll try to debug.

Yeah for the interlaced case the -1 should be after the multiply, if
it's there at all...  would have to double check the docs.

Jesse Barnes, Intel Open Source Technology Center
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