A few people were not clear on this:
Farm cap is $2.2M, but NHL players in the farm are at 10% of their NHL salaries. In other words, you can sign $22M of farm players MAX. It would count as $2.2M in the farm.
So your total cap is $59.4M pro.
$22M (pro salary) in farm which would be $2.2M (equivalent farm salary).
Hope that clears things up.