From: Leo Li <sunpeng...@amd.com>
[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 <markyac...@chromium.org>
Cc: Hayden Goodfellow <hayden.goodfel...@amd.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
Cc: Nicholas Choi <nicholas.c...@amd.com>
Signed-off-by: Leo Li <sunpeng...@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
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
