drm/i915/psr: Clear selective fetch area when duplicating plane state

We are currently not clearing selective fetch area when duplicating plane
state. This is causing problem when plane is re-used for another
purpose. Fix this by clearing selective fetch area when duplicating plane
state.

Now as the state is cleared we need to ensure we have consistent selective
fetch area in plane state on full update. Earlier this was relying on
selective fetch area being copied from old state on state duplicate. Now
this isn't true anymore as we are clearing it. Tackle this by setting full
plane area as selective fetch area for each plane on full update. Rename
the label as skip_su_area_calc as the loop setting the plane selective
fetch area is not skipped anymore.

Move also psr2_sel_fetch_pipe_state_supported check after psr2_su_area
initialization. The loop is run on full update as well now and it needs
initialized psr2_su_area. Clip_area_update is only touching rect height and
x1/x2 are left untouched.

Don't set the area at all for planes not intersecting with the selective
update area. It is already zero sized after plane state duplicate.

Fixes: efab47658a6c ("drm/i915/display/psr: Calculate selective fetch plane registers")
Cc: <stable@vger.kernel.org> # v5.12+
Assisted-by: GitHub-Copilot:claude-opus-5
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patch.msgid.link/20260929094434.77129-2-jouni.hogander@intel.com
(cherry picked from commit bd58f0e221386808cd614bb205112e807dc6b159)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

0 files changed, 0 insertions, 0 deletions