I am not sure of your question, but, yes, the amount reported with a code of "W" in box 12 on your W-2 is the sum of the employer's contributions to your HSA plus your contributions to your HSA via a salary reduction/payroll deduction agreement.
So, it's counter-intuitive, but in this case, your payroll deductions are also called "employer contributions" by the IRS (because your contributions and the employer's are both pre-tax and treated the same way).
If you don't have a code W entry in box 12 and you expect one, you need to ask your employer where the HSA contributions are listed. A few employers put them in box 14, but this causes problems for TurboTax because they can't be automatically found and handled there.