drm/i915: move overlay to display.overlay

Move display overlay related members under drm_i915_private display
sub-struct.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e019fb538536d36bab28feaafe049e0b1726f2d9.1661346845.git.jani.nikula@intel.com

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

@@ -31,6 +31,7 @@ struct intel_fbdev;
 struct intel_fdi_funcs;
 struct intel_hotplug_funcs;
 struct intel_initial_plane_config;
+struct intel_overlay;
 
 struct intel_display_funcs {
 	/*
@@ -242,6 +243,7 @@ struct intel_display {
 	struct intel_dmc dmc;
 	struct intel_dpll dpll;
 	struct intel_hotplug hotplug;
+	struct intel_overlay *overlay;
 	struct intel_wm wm;
 };
 

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

@@ -487,7 +487,7 @@ static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
 
 void intel_overlay_reset(struct drm_i915_private *dev_priv)
 {
-	struct intel_overlay *overlay = dev_priv->overlay;
+	struct intel_overlay *overlay = dev_priv->display.overlay;
 
 	if (!overlay)
 		return;
@@ -1113,7 +1113,7 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
 	struct drm_i915_gem_object *new_bo;
 	int ret;
 
-	overlay = dev_priv->overlay;
+	overlay = dev_priv->display.overlay;
 	if (!overlay) {
 		drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
 		return -ENODEV;
@@ -1273,7 +1273,7 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
 	struct intel_overlay *overlay;
 	int ret;
 
-	overlay = dev_priv->overlay;
+	overlay = dev_priv->display.overlay;
 	if (!overlay) {
 		drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
 		return -ENODEV;
@@ -1416,7 +1416,7 @@ void intel_overlay_setup(struct drm_i915_private *dev_priv)
 	update_polyphase_filter(overlay->regs);
 	update_reg_attrs(overlay, overlay->regs);
 
-	dev_priv->overlay = overlay;
+	dev_priv->display.overlay = overlay;
 	drm_info(&dev_priv->drm, "Initialized overlay support.\n");
 	return;
 
@@ -1428,7 +1428,7 @@ void intel_overlay_cleanup(struct drm_i915_private *dev_priv)
 {
 	struct intel_overlay *overlay;
 
-	overlay = fetch_and_zero(&dev_priv->overlay);
+	overlay = fetch_and_zero(&dev_priv->display.overlay);
 	if (!overlay)
 		return;
 
@@ -1457,7 +1457,7 @@ struct intel_overlay_error_state {
 struct intel_overlay_error_state *
 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv)
 {
-	struct intel_overlay *overlay = dev_priv->overlay;
+	struct intel_overlay *overlay = dev_priv->display.overlay;
 	struct intel_overlay_error_state *error;
 
 	if (!overlay || !overlay->active)

drivers/gpu/drm/i915/i915_drv.h

@@ -83,7 +83,6 @@ struct intel_connector;
 struct intel_dp;
 struct intel_encoder;
 struct intel_limit;
-struct intel_overlay;
 struct intel_overlay_error_state;
 struct vlv_s0ix_state;
 
@@ -343,9 +342,6 @@ struct drm_i915_private {
 
 	bool preserve_bios_swizzle;
 
-	/* overlay */
-	struct intel_overlay *overlay;
-
 	/* backlight registers and fields in struct intel_panel */
 	struct mutex backlight_lock;
 

drivers/gpu/drm/i915/i915_getparam.c

@@ -36,7 +36,7 @@ int i915_getparam_ioctl(struct drm_device *dev, void *data,
 		value = to_gt(i915)->ggtt->num_fences;
 		break;
 	case I915_PARAM_HAS_OVERLAY:
-		value = !!i915->overlay;
+		value = !!i915->display.overlay;
 		break;
 	case I915_PARAM_HAS_BSD:
 		value = !!intel_engine_lookup_user(i915,