In "Do Not Go Gentle Into that Good Night", what feelings does the poet reveal about his father's death?

The last stanza indicates that he wants his father, who is dying, to not go without a fight, without clinging fiercely to life until the very end.  He asked his father to "Curse, bless, me now with your fierce tears, I pray."  This indicates he wants his father there, lucid, blessing and cursing him "fiercely" until the very end.  He wants his father to be similarly intense with death, to "rage, rage" against it. 

From these lines we can infer that he cared deeply about his father.  First of all, he felt strongly enough about his father to write a poem about his struggle against death.  Secondly, he respected his father and wanted him to have a proud, fighting end.  Thirdly, he mentiioned himself at the death bed, and that he wanted his father's love and attention until the very end (the blessings and cursings).  This indicates a very close relationship, and Thomas himself seems to rage against death, which indicates he is upset that it is taking his father away.