[Intel-gfx] [PATCH 2/2] drm/i915: In DBUF/WM calcs for 90/270, swap w & h

[Konduru, Chandra]

> This patch swaps src width and height for dbuf/wm calculations
> when rotation is 90/270 as per hw requirements.
>
> Signed-off-by: Chandra Konduru <chandra.konduru at intel.com>

Do we have an igt which provokes underruns and hence can test this
automatically? Very tall/narrow buffers should do it I think.
-Daniel

Yes. Right now kms_rotation_crc is the case we have, but I'm also
triggering something via kms_nv12 too.