On Fri, 2022-05-13 at 17:28 +0300, Jouni Högander wrote: > Currently we have some corner cases where area calculation fails. For > these sel fetch area calculation ends up having update area as y1 = 0, > y2 = 4. Instead of these values safer option is full update. > > One of such for example is big fb with offset. We don't have usable > offset in psr2_sel_fetch_update. Currently it's open what is the > proper way to fix this corner case. Use full update for now. > > v2: Commit message modified > v3: Print out debug info once when area calculation fails > v4: Use drm_info_once > v5: pipeA -> "pipe %c", pipe_name(crtc-pipe) >
Reviewed-by: José Roberto de Souza <[email protected]> > Cc: José Roberto de Souza <[email protected]> > Cc: Mika Kahola <[email protected]> > Signed-off-by: Jouni Högander <[email protected]> > --- > drivers/gpu/drm/i915/display/intel_psr.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c > b/drivers/gpu/drm/i915/display/intel_psr.c > index 06db407e2749..fecdaaeac39e 100644 > --- a/drivers/gpu/drm/i915/display/intel_psr.c > +++ b/drivers/gpu/drm/i915/display/intel_psr.c > @@ -1685,6 +1685,7 @@ static bool psr2_sel_fetch_pipe_state_supported(const > struct intel_crtc_state *c > int intel_psr2_sel_fetch_update(struct intel_atomic_state *state, > struct intel_crtc *crtc) > { > + struct drm_i915_private *dev_priv = to_i915(state->base.dev); > struct intel_crtc_state *crtc_state = > intel_atomic_get_new_crtc_state(state, crtc); > struct drm_rect pipe_clip = { .x1 = 0, .y1 = -1, .x2 = INT_MAX, .y2 = > -1 }; > struct intel_plane_state *new_plane_state, *old_plane_state; > @@ -1770,6 +1771,19 @@ int intel_psr2_sel_fetch_update(struct > intel_atomic_state *state, > clip_area_update(&pipe_clip, &damaged_area); > } > > + /* > + * TODO: For now we are just using full update in case > + * selective fetch area calculation fails. To optimize this we > + * should identify cases where this happens and fix the area > + * calculation for those. > + */ > + if (pipe_clip.y1 == -1) { > + drm_info_once(&dev_priv->drm, > + "Selective fetch area calculation failed in pipe > %c\n", > + pipe_name(crtc->pipe)); > + full_update = true; > + } > + > if (full_update) > goto skip_sel_fetch_set_loop; >
