[v4,0/2] Fixes for selective fetch area calculation

Message

Hogander, Jouni May 13, 2022, 12:30 p.m. UTC

Currently selective fetch area calculation ends up as bogus area in
at least following cases:

1. Updated plane is partially or fully outside pipe area
2. Big fb with only part of memory area used for plane

These end up as y1 = 0, y2 = 4 or y2 being outside pipe area. This
patch set addresses these by ensuring update area is within pipe area
or by falling back to full update.

v4:
 - draw_area -> pipe_src
 - drm_dbg_once dropped and drm_info_once used instead
v3:
 - Add drm_dbg_once* and use it when sel fetch area calculation fails
 - Move drm_rect_intersect to clip_area_update
v2:
 - Update commit message of first patch
 - Set damaged_area x1 and x2 during initialization

Cc: José Roberto de Souza <[e-mail]>
Cc: Mika Kahola <[e-mail]>
Cc: Mark Pearson <[e-mail]>

Jouni Högander (2):
  drm/i915/psr: Use full update In case of area calculation fails
  drm/i915: Ensure damage clip area is within pipe area

 drivers/gpu/drm/i915/display/intel_psr.c | 35 +++++++++++++++++++-----
 1 file changed, 28 insertions(+), 7 deletions(-)