resource_get_opp_head
struct pipe_ctx *otg_master = resource_get_opp_head(pipe_ctx);
pipe_ctx = resource_get_opp_head(pipe_ctx);
struct pipe_ctx *opp_head = resource_get_opp_head(pipe_ctx);
struct pipe_ctx *opp_head = resource_get_opp_head(dpp_pipe);
dml2_options->callbacks.get_opp_head = &resource_get_opp_head;
resource_get_odm_slice_index(resource_get_opp_head(pipe)) == 0)
struct pipe_ctx *resource_get_opp_head(const struct pipe_ctx *pipe_ctx);