drm/i915: Clear pfit registers when not used by any outputs

[karo-tx-linux.git] / drivers / gpu / drm / i915 / intel_lvds.c

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 4324a326f98ee28f4d67936b7a4789556344c4fb..f79327fc66539937d686ba604823f81895f2fa83 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -837,7 +837,7 @@ static bool intel_lvds_ddc_probe(struct drm_device *dev, u8 pin)
  * Create the connector, register the LVDS DDC bus, and try to figure out what
  * modes we can display on the LVDS panel (if present).
  */
-void intel_lvds_init(struct drm_device *dev)
+bool intel_lvds_init(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_lvds *intel_lvds;
@@ -853,37 +853,37 @@ void intel_lvds_init(struct drm_device *dev)
 
        /* Skip init on machines we know falsely report LVDS */
        if (dmi_check_system(intel_no_lvds))
-               return;
+               return false;
 
        pin = GMBUS_PORT_PANEL;
        if (!lvds_is_present_in_vbt(dev, &pin)) {
                DRM_DEBUG_KMS("LVDS is not present in VBT\n");
-               return;
+               return false;
        }
 
        if (HAS_PCH_SPLIT(dev)) {
                if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0)
-                       return;
+                       return false;
                if (dev_priv->edp.support) {
                        DRM_DEBUG_KMS("disable LVDS for eDP support\n");
-                       return;
+                       return false;
                }
        }
 
        if (!intel_lvds_ddc_probe(dev, pin)) {
                DRM_DEBUG_KMS("LVDS did not respond to DDC probe\n");
-               return;
+               return false;
        }
 
        intel_lvds = kzalloc(sizeof(struct intel_lvds), GFP_KERNEL);
        if (!intel_lvds) {
-               return;
+               return false;
        }
 
        intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
        if (!intel_connector) {
                kfree(intel_lvds);
-               return;
+               return false;
        }
 
        if (!HAS_PCH_SPLIT(dev)) {
@@ -1026,7 +1026,7 @@ out:
        /* keep the LVDS connector */
        dev_priv->int_lvds_connector = connector;
        drm_sysfs_connector_add(connector);
-       return;
+       return true;
 
 failed:
        DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
@@ -1034,4 +1034,5 @@ failed:
        drm_encoder_cleanup(encoder);
        kfree(intel_lvds);
        kfree(intel_connector);
+       return false;
 }