1. 10 Sep, 2024 1 commit
    • Leo Li's avatar
      drm/amd/display: Do not reset planes based on crtc zpos_changed · 578aab4e
      Leo Li authored
      [Why]
      
      drm_normalize_zpos will set the crtc_state->zpos_changed to 1 if any of
      it's assigned planes changes zpos, or is removed/added from it.
      
      To have amdgpu_dm request a plane reset on this is too broad. For
      example, if only the cursor plane was moved from one crtc to another,
      the crtc's zpos_changed will be set to true. But that does not mean that
      the underlying primary plane requires a reset.
      
      [How]
      
      Narrow it down so that only the plane that has a change in zpos will
      require a reset.
      
      As a future TODO, we can further optimize this by only requiring a reset
      on z-order change. Z-order is different from z-pos, since a zpos change
      doesn't necessarily mean the z-ordering changed, and DC should only
      require a reset if the z-ordering changed.
      
      For example, the following zpos update does not change z-ordering:
      
          Plane A: zpos 2 -> 3
          Plane B: zpos 1 -> 2
          => Plane A is still on top of plane B: no reset needed
      
      Whereas this one does change z-ordering:
      
          Plane A: zpos 2 -> 1
          Plane B: zpos 1 -> 2
          => Plane A changed from on top, to below plane B: reset needed
      
      Fixes: 38e0c3df ("drm/amd/display: Move PRIMARY plane zpos higher")
      Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3569Signed-off-by: default avatarLeo Li <sunpeng.li@amd.com>
      Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      578aab4e
  2. 06 Sep, 2024 25 commits
  3. 05 Sep, 2024 1 commit
  4. 02 Sep, 2024 13 commits