drm/i915: Add crtc state duplication/destruction functions

The atomic helpers need these to prepare a new state object when
starting a new atomic operation.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Matt Roper 2015-01-21 16:35:47 -08:00 • committed by Daniel Vetter
commit 1356837e55
3 changed files with 40 additions and 0 deletions