From: Leo Li <sunpeng.li@xxxxxxx> [Why] crc_skip_count is used to track how many frames to skip to allow the OTG CRC engine to "warm up" before it outputs correct CRC values. Experimentally, this seems to be 2 frames. When duplicating CRTC states, this value was not copied to the duplicated state. Therefore, when this state is committed, we will needlessly wait 2 frames before outputing CRC values. Even if the CRC engine is already warmed up. [How] Copy the crc_skip_count as part of dm_crtc_duplicate_state. Cc: Mark Yacoub <markyacoub@xxxxxxxxxxxx> Cc: Hayden Goodfellow <hayden.goodfellow@xxxxxxx> Cc: Harry Wentland <harry.wentland@xxxxxxx> Cc: Nicholas Choi <Nicholas.Choi@xxxxxxx> Signed-off-by: Leo Li <sunpeng.li@xxxxxxx> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 87299e62fe12..5482b0925396 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6568,6 +6568,7 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc) state->freesync_config = cur->freesync_config; state->cm_has_degamma = cur->cm_has_degamma; state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb; + state->crc_skip_count = cur->crc_skip_count; state->force_dpms_off = cur->force_dpms_off; /* TODO Duplicate dc_stream after objects are stream object is flattened */ -- 2.25.1
