srcimp_mgr_get_ctrl_blk
int (*srcimp_mgr_get_ctrl_blk)(void **rblk);
.srcimp_mgr_get_ctrl_blk = srcimp_mgr_get_ctrl_blk,
.srcimp_mgr_get_ctrl_blk = srcimp_mgr_get_ctrl_blk,
err = hw->srcimp_mgr_get_ctrl_blk(&mgr->ctrl_blk);