drm/i915/dp: debug log max vswing and pre-emphasis (6fe20299) · Commits · 戴 / test

Provide slightly more debugging help. Reviewed-by:

drivers/gpu/drm/i915/display/intel_dp.c

+8 −5

Original line number	Diff line number	Diff line
		@@ -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",
		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);
		DP_TRAIN_PRE_EMPHASIS_SHIFT,
		train_set & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ?
		" (max)" : "");

		intel_dp->DP = (intel_dp->DP & ~mask) \| signal_levels;