[PATCH 44/51] drm/i915: Split sprite update_plane() into calc+commit phases

From: Ville Syrj?l? Separate the part that calculates the register values from the part that writes the registers. This will be useful in the atomic page flip code. Also move the watermark magic into a prepare function that can be performed outside the critical

[PATCH 44/51] drm/i915: Split sprite update_plane() into calc+commit phases

From: Ville Syrjälä ville.syrj...@linux.intel.com Separate the part that calculates the register values from the part that writes the registers. This will be useful in the atomic page flip code. Also move the watermark magic into a prepare function that can be performed outside the critical parts