[PATCH 2/6] drm/{i915, xe}/display: Add display runtime pm parent interface

["Jouni Högander" <jouni.hogander@intel.com>]

We have differing implementations for display runtime pm in i915 and xe
drivers. Add struct of function pointers into display_parent_interface
which will contain used implementation of runtime pm.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
---
 include/drm/intel/display_parent_interface.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/drm/intel/display_parent_interface.h b/include/drm/intel/display_parent_interface.h
index 28c976815327a..7ad0a27d503c8 100644
--- a/include/drm/intel/display_parent_interface.h
+++ b/include/drm/intel/display_parent_interface.h
@@ -8,6 +8,22 @@
 
 struct drm_device;
 
+struct intel_display_rpm {
+	struct ref_tracker *(*get)(const struct drm_device *drm);
+	struct ref_tracker *(*get_raw)(const struct drm_device *drm);
+	struct ref_tracker *(*get_if_in_use)(const struct drm_device *drm);
+	struct ref_tracker *(*get_noresume)(const struct drm_device *drm);
+
+	void (*put)(const struct drm_device *drm, struct ref_tracker *wakeref);
+	void (*put_raw)(const struct drm_device *drm, struct ref_tracker *wakeref);
+	void (*put_unchecked)(const struct drm_device *drm);
+
+	bool (*suspended)(const struct drm_device *drm);
+	void (*assert_held)(const struct drm_device *drm);
+	void (*assert_block)(const struct drm_device *drm);
+	void (*assert_unblock)(const struct drm_device *drm);
+};
+
 /**
  * struct intel_display_parent_interface - services parent driver provides to display
  *
@@ -21,6 +37,8 @@ struct drm_device;
  * check the optional pointers.
  */
 struct intel_display_parent_interface {
+	/* Runtime PM functions */
+	const struct intel_display_rpm *rpm;
 };
 
 #endif
-- 
2.43.0