1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_global_state.h b/drivers/gpu/drm/i915/display/intel_global_state.h
new file mode 100644
index 000000000000..e1efa530cc86
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_global_state.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __INTEL_GLOBAL_STATE_H__
+#define __INTEL_GLOBAL_STATE_H__
+
+#include <linux/kref.h>
+#include <linux/list.h>
+
+struct intel_atomic_state;
+struct intel_display;
+struct intel_global_commit;
+struct intel_global_obj;
+struct intel_global_state;
+
+struct intel_global_state_funcs {
+	struct intel_global_state *(*atomic_duplicate_state)(struct intel_global_obj *obj);
+	void (*atomic_destroy_state)(struct intel_global_obj *obj,
+				     struct intel_global_state *state);
+};
+
+struct intel_global_obj {
+	struct list_head head;
+	struct intel_global_state *state;
+	const struct intel_global_state_funcs *funcs;
+};
+
+struct intel_global_state {
+	struct intel_global_obj *obj;
+	struct intel_atomic_state *state;
+	struct intel_global_commit *commit;
+	struct kref ref;
+	bool changed, serialized;
+};
+
+void intel_atomic_global_obj_init(struct intel_display *display,
+				  struct intel_global_obj *obj,
+				  struct intel_global_state *state,
+				  const struct intel_global_state_funcs *funcs);
+void intel_atomic_global_obj_cleanup(struct intel_display *display);
+
+struct intel_global_state *
+intel_atomic_get_global_obj_state(struct intel_atomic_state *state,
+				  struct intel_global_obj *obj);
+struct intel_global_state *
+intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj);
+struct intel_global_state *
+intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj);
+
+void intel_atomic_swap_global_state(struct intel_atomic_state *state);
+void intel_atomic_clear_global_state(struct intel_atomic_state *state);
+int intel_atomic_lock_global_state(struct intel_global_state *obj_state);
+int intel_atomic_serialize_global_state(struct intel_global_state *obj_state);
+
+int intel_atomic_global_state_setup_commit(struct intel_atomic_state *state);
+void intel_atomic_global_state_commit_done(struct intel_atomic_state *state);
+int intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state);
+
+bool intel_atomic_global_state_is_serialized(struct intel_atomic_state *state);
+
+#endif