Sir My Son Is17yrs Old.He Is Very Talented,but From 12yrs

Sir my son is17yrs old.He is very talented,but from 12yrs he started seeing pornvideos &caught by me for many days.we restricted him using computer and cell phone.Now he isin 12th standard, bbut he did not come back from that character.what is the remedy for that?he need any counselling? Ur answer please sir.