diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2020-01-17 17:02:35 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2020-01-21 16:54:24 +0200 |
| commit | 6fe20299b3eec33e544485f5fc65524f145465be (patch) | |
| tree | e68a5c97aab215b5631237a0ae002dc85a35d303 | |
| parent | 08b90a717fdb18591888404b178d5d0bdd049700 (diff) | |
drm/i915/dp: debug log max vswing and pre-emphasis
Provide slightly more debugging help.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200117150235.22471-1-jani.nikula@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 13 |
1 files 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 3bfbd2b9a53e..031186910dd4 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; |