Instead of setting vrr.guardband to vblank, use optimal guardband that works for most of the cases. This will help in avoiding need of change in guardband and fix the LRR feature that needs seamless switching to a lower refresh rate.
-Patch [1-2] are squashed from series [1] and [2] and are not meant for review. -Patch [3-6] are patches to check the guardband for prefill+PSR+SDP latencies and to use a static optimized guardband. [1] "Preparatory patches for guardband optimization" https://patchwork.freedesktop.org/series/155661/#rev7 [2] "Introduce helpers for prefill latency calculations" https://patchwork.freedesktop.org/series/155629/#rev2 Ankit Nautiyal (5): [NOT FOR REVIEW] drm/i915/vrr: prep patches for guardband optimization squashed drm/i915/dp: Add SDP latency computation helper drm/i915/psr: Add function to compute max link-wake latency drm/i915/display: Add guardband check for feature latencies drm/i915/vrr: Use the min static optimized guardband Ville Syrjälä (1): [NOT FOR REVIEW] drm/i915/prefill: Prefill latency calculations series squashed drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/display/intel_cdclk.c | 80 +++++- drivers/gpu/drm/i915/display/intel_cdclk.h | 6 + drivers/gpu/drm/i915/display/intel_ddi.c | 3 + drivers/gpu/drm/i915/display/intel_display.c | 82 +++++- drivers/gpu/drm/i915/display/intel_dp.c | 42 +++ drivers/gpu/drm/i915/display/intel_dp.h | 4 + drivers/gpu/drm/i915/display/intel_psr.c | 257 +++++++++++++------ drivers/gpu/drm/i915/display/intel_psr.h | 3 + drivers/gpu/drm/i915/display/intel_vblank.c | 10 + drivers/gpu/drm/i915/display/intel_vblank.h | 2 + drivers/gpu/drm/i915/display/intel_vdsc.c | 8 + drivers/gpu/drm/i915/display/intel_vdsc.h | 1 + drivers/gpu/drm/i915/display/intel_vrr.c | 90 ++++++- drivers/gpu/drm/i915/display/intel_vrr.h | 2 +- drivers/gpu/drm/i915/display/skl_prefill.c | 157 +++++++++++ drivers/gpu/drm/i915/display/skl_prefill.h | 46 ++++ drivers/gpu/drm/i915/display/skl_scaler.c | 198 ++++++++++++++ drivers/gpu/drm/i915/display/skl_scaler.h | 15 ++ drivers/gpu/drm/i915/display/skl_watermark.c | 156 +++++------ drivers/gpu/drm/i915/display/skl_watermark.h | 3 + drivers/gpu/drm/xe/Makefile | 1 + 22 files changed, 983 insertions(+), 184 deletions(-) create mode 100644 drivers/gpu/drm/i915/display/skl_prefill.c create mode 100644 drivers/gpu/drm/i915/display/skl_prefill.h -- 2.45.2
