drm/amd/display: Add logging when DP link training Clock recovery is Successful

Log when Clock recovery is successful, as part of
DP link training process.

Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_8b_10b.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_8b_10b.c
index 14b98e096d392691c51885461928d9cfe713dcf3..3889ebb2256bf384708bddad569f464c3c3712af 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_8b_10b.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_8b_10b.c
@@ -225,8 +225,10 @@ enum link_training_result perform_8b_10b_clock_recovery_sequence(
                                offset);
 
                /* 5. check CR done*/
-               if (dp_is_cr_done(lane_count, dpcd_lane_status))
+               if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+                       DC_LOG_HW_LINK_TRAINING("%s: Clock recovery OK\n", __func__);
                        return LINK_TRAINING_SUCCESS;
+               }
 
                /* 6. max VS reached*/
                if ((link_dp_get_encoding_format(&lt_settings->link_settings) ==

diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_dpia.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_dpia.c
index ab4aafdb5e5c17a2283ce7fb1e335f0bcff38894..4f4e899e5c46dc29dad7f267b43ae33a9786bfe1 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_dpia.c
@@ -401,6 +401,7 @@ static enum link_training_result dpia_training_cr_non_transparent(
 
                /* Check if clock recovery successful. */
                if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+                       DC_LOG_HW_LINK_TRAINING("%s: Clock recovery OK\n", __func__);
                        result = LINK_TRAINING_SUCCESS;
                        break;
                }
@@ -508,6 +509,7 @@ static enum link_training_result dpia_training_cr_transparent(
 
                /* Check if clock recovery successful. */
                if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+                       DC_LOG_HW_LINK_TRAINING("%s: Clock recovery OK\n", __func__);
                        result = LINK_TRAINING_SUCCESS;
                        break;
                }