Provide slightly more debugging help.
Signed-off-by: Jani Nikula <jani.nik...@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
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