tree 4c97cd979d536adc149e2ed4d92313e0fb990b41
parent 58c6eaa24dbd8c97ef5f643324f087271aa79d64
author Daniel Vetter <daniel.vetter@ffwll.ch> 1365690550 +0200
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1366271747 +0200

drm/i915: add i9xx pfit pipe asserts

We can only enable the pfit if the pipe is disabled. Ensure that this
is obeyed with a neat assert.

Also check whether the pfit is off before enabling it - if not we've
lost track of things somewhere since the pfit is only ever used by the
lvds output.

v2: Fix spell fail in the commit message pointed out by Ville&Jani.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>