Panel Replay VSC SDP not getting sent when VRR is enabled and W1 and W2 are 0. So Program Set Context Latency in TRANS_SET_CONTEXT_LATENCY register to at least a value of 1.
HSD: 14015406119 v1: Initial version. v2: Update timings stored in adjusted_mode struct. [Ville] Signed-off-by: Animesh Manna <[email protected]> --- drivers/gpu/drm/i915/display/intel_vblank.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c index baf7354cb6e2..2e11629e4e9f 100644 --- a/drivers/gpu/drm/i915/display/intel_vblank.c +++ b/drivers/gpu/drm/i915/display/intel_vblank.c @@ -552,6 +552,19 @@ void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, adjusted_mode.crtc_vtotal = crtc_state->vrr.vmax; adjusted_mode.crtc_vblank_end = crtc_state->vrr.vmax; adjusted_mode.crtc_vblank_start = intel_vrr_vmin_vblank_start(crtc_state); + + /* + * WA: HSD-14015406119 + * Program Set Context Latency in TRANS_SET_CONTEXT_LATENCY register + * to at least a value of 1 when Panel Replay is enabled with VRR. + * Value for TRANS_SET_CONTEXT_LATENCY is calculated by substracting + * crtc_vdisplay from crtc_vblank_start, so incrementing crtc_vblank_start + * by 1 if both are equal. + */ + if (DISPLAY_VER(i915) >= 13 && crtc_state->has_panel_replay && + adjusted_mode.crtc_vblank_start == adjusted_mode.crtc_vdisplay) + adjusted_mode.crtc_vblank_start += 1; + vmax_vblank_start = intel_vrr_vmax_vblank_start(crtc_state); } else { mode_flags &= ~I915_MODE_FLAG_VRR; -- 2.29.0
