HSA Deductions

My  W-2 shows $1,500 in box 12b W (Employer contributions).  I have a 1099-SA box 1 Gross Distribution of $1,800.  I had $100 per month taken out of my pay for my HSA.  When I go through the Turbo Tax program it asks for the 1099-SA, then continues to a page asking about any personal contributions not made through my employer.  My question is can I claim the $1,200 taken out of my pay in addition to theW-2 box 12b amount?  Thanks