tree 5fb6cbef495ad1d582cc72b0a1edfd03d2e05bc8
parent de38b95cbb2a92ea037c22d41fc1476c0825c0d7
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1435172410 +0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1435568411 +0200

drm/i915: Zero unused WM1 watermarks on VLV/CHV

The hardware supposedly ignores the WM1 watermarks while the PND
deadline mode is enabled, but clear out the register just in case.
This is what the other OS does, and it does make register dumps look
more consistent when we don't have partial WM1 values lingering in
the registers (some WM1 watermarks already get zeroed when the actually
used DSPFW registers get written).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>