drm/i915/panel: add panel register/unregister

Add panel register/unregister functions, and handle backlight
register/unregister from there. This is in preparation for adding more
panel specific register/unregister functionality.

Cc: Lee Shawn C <[e-mail]>
Tested-by: Lee Shawn C <[e-mail]>
Reviewed-by: Arun R Murthy <[e-mail]>
Reviewed-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/b73[e-mail]
Signed-off-by: Jani Nikula <[e-mail]>

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

···
 
 #include "i915_drv.h"
 #include "i915_utils.h"
-#include "intel_backlight.h"
 #include "intel_connector.h"
 #include "intel_display_core.h"
 #include "intel_display_debugfs.h"
···
 	kfree(connector);
 }
 
-int intel_connector_register(struct drm_connector *connector)
+int intel_connector_register(struct drm_connector *_connector)
 {
-	struct intel_connector *intel_connector = to_intel_connector(connector);
-	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_connector *connector = to_intel_connector(_connector);
+	struct drm_i915_private *i915 = to_i915(_connector->dev);
 	int ret;
 
-	ret = intel_backlight_device_register(intel_connector);
+	ret = intel_panel_register(connector);
 	if (ret)
 		goto err;
 
 	if (i915_inject_probe_failure(i915)) {
 		ret = -EFAULT;
-		goto err_backlight;
+		goto err_panel;
 	}
 
-	intel_connector_debugfs_add(intel_connector);
+	intel_connector_debugfs_add(connector);
 
 	return 0;
 
-err_backlight:
-	intel_backlight_device_unregister(intel_connector);
+err_panel:
+	intel_panel_unregister(connector);
 err:
 	return ret;
 }
 
-void intel_connector_unregister(struct drm_connector *connector)
+void intel_connector_unregister(struct drm_connector *_connector)
 {
-	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_connector *connector = to_intel_connector(_connector);
 
-	intel_backlight_device_unregister(intel_connector);
+	intel_panel_unregister(connector);
 }
 
 void intel_connector_attach_encoder(struct intel_connector *connector,

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

···
 		drm_mode_destroy(connector->base.dev, fixed_mode);
 	}
 }
+
+int intel_panel_register(struct intel_connector *connector)
+{
+	return intel_backlight_device_register(connector);
+}
+
+void intel_panel_unregister(struct intel_connector *connector)
+{
+	intel_backlight_device_unregister(connector);
+}

drivers/gpu/drm/i915/display/intel_panel.h

···
 int intel_panel_init(struct intel_connector *connector,
 		     const struct drm_edid *fixed_edid);
 void intel_panel_fini(struct intel_connector *connector);
+int intel_panel_register(struct intel_connector *connector);
+void intel_panel_unregister(struct intel_connector *connector);
 enum drm_connector_status
 intel_panel_detect(struct drm_connector *connector, bool force);
 bool intel_panel_use_ssc(struct intel_display *display);