[Intel-gfx] [PATCH] drm/i915/dp: debug log max vswing and pre-emphasis

[Jani Nikula]

Provide slightly more debugging help.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 4074d83b1a5f..c26be4421f01 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4142,11 +4142,14 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
 	if (mask)
 		DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels);
 
-	DRM_DEBUG_KMS("Using vswing level %d\n",
-		train_set & DP_TRAIN_VOLTAGE_SWING_MASK);
-	DRM_DEBUG_KMS("Using pre-emphasis level %d\n",
-		(train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >>
-			DP_TRAIN_PRE_EMPHASIS_SHIFT);
+	DRM_DEBUG_KMS("Using vswing level %d%s\n",
+		      train_set & DP_TRAIN_VOLTAGE_SWING_MASK,
+		      train_set & DP_TRAIN_MAX_SWING_REACHED ? " (max)" : "");
+	DRM_DEBUG_KMS("Using pre-emphasis level %d%s\n",
+		      (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >>
+		      DP_TRAIN_PRE_EMPHASIS_SHIFT,
+		      train_set & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ?
+		      " (max)" : "");
 
 	intel_dp->DP = (intel_dp->DP & ~mask) | signal_levels;
 
-- 
2.20.1