As we move towards using a shorter, optimized guardband, we need to adjust how the delayed vblank start is computed.
Adjust the crtc_vblank_start using Vmin Vtotal - guardband only when intel_vrr_always_use_vrr_tg() is true. This also paves way for guardband optimization, by handling the movement of the crtc_vblank_start for platforms that have VRR TG always active. v2: Drop the helper and add the adjustment directly to intel_vrr_compute_guardband(). Ville Signed-off-by: Ankit Nautiyal <[email protected]> --- drivers/gpu/drm/i915/display/intel_vrr.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 221b25832e56..5f9b8e5c48be 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -436,7 +436,7 @@ intel_vrr_max_guardband(struct intel_crtc_state *crtc_state) void intel_vrr_compute_guardband(struct intel_crtc_state *crtc_state) { struct intel_display *display = to_intel_display(crtc_state); - const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; if (!intel_vrr_possible(crtc_state)) return; @@ -444,6 +444,10 @@ void intel_vrr_compute_guardband(struct intel_crtc_state *crtc_state) crtc_state->vrr.guardband = min(crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay, intel_vrr_max_guardband(crtc_state)); + if (intel_vrr_always_use_vrr_tg(display)) + adjusted_mode->crtc_vblank_start = + crtc_state->vrr.vmin - crtc_state->vrr.guardband; + if (DISPLAY_VER(display) < 13) crtc_state->vrr.pipeline_full = intel_vrr_guardband_to_pipeline_full(crtc_state, -- 2.45.2
