drm/i915: Add pre/post plane updates for SAGV
Lets have a unified way to handle SAGV changes, espoecially considering the upcoming Gen12 changes. Current "standard" way of doing this in commit_tail is pre/post plane updates, when everything which has to be forbidden and not supported in new config has to be restricted before update and relaxed after plane update. v2: - Removed unneeded returns(Ville) Reviewed-by:Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200415143911.10244-5-stanislav.lisovskiy@intel.com
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