Created attachment 215521 [details]
Subwoofer does not work out of the box on ASUS N751/N551 laptops. This
patch fixes it. Patch tested on N751 laptop. N551 part is not tested,
but according to  and  this laptop requires similar changes, so I
included them in the patch.
Signed-off-by: Yura Pakhuchiy <email@example.com>
It would be great to include it both into maintline and 4.4 trees.
Thanks, now submitted and merged.