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/#rev8 [2] "Introduce helpers for prefill latency calculations" https://patchwork.freedesktop.org/series/155629/#rev3 Rev2: - Drop patch to check guardband in crtc_check phase, instead check guardband for SDP in compute_config_late. - Modify the helper to get the min sdp guardband if all SDPs are assumed to be enabled. - Rename the helpers to get min guardband for sdp and psr. Ankit Nautiyal (5): [NOT FOR REVIEW] drm/i915/vrr: prep patches for guardband optimization squashed drm/i915/psr: Add helper to get min psr guardband drm/i915/dp: Add helper to get min sdp guardband drm/i915/dp: Check if guardband can accommodate sdp 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 | 7 + drivers/gpu/drm/i915/display/intel_display.c | 26 +- drivers/gpu/drm/i915/display/intel_dp.c | 69 +++++ drivers/gpu/drm/i915/display/intel_dp.h | 5 + drivers/gpu/drm/i915/display/intel_psr.c | 256 +++++++++++++------ 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 | 83 +++++- 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 | 141 ++++++++++ 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, 894 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
