[PATCH 11/11] drm/i915: Reduce combo PHY log spam

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We always check whether combo PHYs need to be re-initialized
after disabling DC states, which leads to log spam. Switch things
around so that we only log something when we actually have to
re-initialized a PHY.

The log spam was exacerbated by commit 41b4c7fe72b6 ("drm/i915:
Disable DC states for all commits") since we now disable DC
states far more often.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_combo_phy.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c
index 922a6d87b553..ee843f2b1af1 100644
--- a/drivers/gpu/drm/i915/display/intel_combo_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c
@@ -114,10 +114,6 @@ static bool icl_verify_procmon_ref_values(struct drm_i915_private *dev_priv,
 
 	procmon = icl_get_procmon_ref_values(dev_priv, phy);
 
-	drm_dbg_kms(&dev_priv->drm,
-		    "Combo PHY %c Voltage/Process Info : %s\n",
-		    phy_name(phy), procmon->name);
-
 	ret = check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW1(phy),
 			    (0xff << 16) | 0xff, procmon->dw1);
 	ret &= check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW9(phy),
@@ -312,14 +308,17 @@ static void icl_combo_phys_init(struct drm_i915_private *dev_priv)
 	enum phy phy;
 
 	for_each_combo_phy(dev_priv, phy) {
+		const struct icl_procmon *procmon;
 		u32 val;
 
-		if (icl_combo_phy_verify_state(dev_priv, phy)) {
-			drm_dbg(&dev_priv->drm,
-				"Combo PHY %c already enabled, won't reprogram it.\n",
-				phy_name(phy));
+		if (icl_combo_phy_verify_state(dev_priv, phy))
 			continue;
-		}
+
+		procmon = icl_get_procmon_ref_values(dev_priv, phy);
+
+		drm_dbg(&dev_priv->drm,
+			"Initializing combo PHY %c (Voltage/Process Info : %s)\n",
+			phy_name(phy), procmon->name);
 
 		if (!has_phy_misc(dev_priv, phy))
 			goto skip_phy_misc;
-- 
2.39.2