drm/i915: move display mutex inits to display code

The core code has no business accessing i915->display directly. These
could be further spread to respective files, but this is a start.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231102155223.2298316-1-jani.nikula@intel.com

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

@@ -181,6 +181,12 @@ void intel_display_driver_early_probe(struct drm_i915_private *i915)
 	if (!HAS_DISPLAY(i915))
 		return;
 
+	mutex_init(&i915->display.backlight.lock);
+	mutex_init(&i915->display.audio.mutex);
+	mutex_init(&i915->display.wm.wm_mutex);
+	mutex_init(&i915->display.pps.mutex);
+	mutex_init(&i915->display.hdcp.hdcp_mutex);
+
 	intel_display_irq_init(i915);
 	intel_dkl_phy_init(i915);
 	intel_color_init_hooks(i915);

drivers/gpu/drm/i915/i915_driver.c

@@ -230,16 +230,10 @@ static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
 
 	spin_lock_init(&dev_priv->irq_lock);
 	spin_lock_init(&dev_priv->gpu_error.lock);
-	mutex_init(&dev_priv->display.backlight.lock);
 
 	mutex_init(&dev_priv->sb_lock);
 	cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE);
 
-	mutex_init(&dev_priv->display.audio.mutex);
-	mutex_init(&dev_priv->display.wm.wm_mutex);
-	mutex_init(&dev_priv->display.pps.mutex);
-	mutex_init(&dev_priv->display.hdcp.hdcp_mutex);
-
 	i915_memcpy_init_early(dev_priv);
 	intel_runtime_pm_init_early(&dev_priv->runtime_pm);