drm/i915: Introduce proper dbuf state
Add a global state to track the dbuf slices. Gets rid of all the nasty coupling between state->modeset and dbuf recomputation. Also we can now totally nuke state->active_pipe_changes. dev_priv->wm.distrust_bios_wm still remains, but that too will get nuked soon. Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200225171125.28885-9-ville.syrjala@linux.intel.comReviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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