Matt Roper 6b6bada7d4 drm/i915/gen9: Reject display updates that exceed wm limitations (v2)
If we can't find any valid level 0 watermark values for the requested
atomic transaction, reject the configuration before we try to start
programming the hardware.

v2:
 - Add extra debugging output when we reject level 0 watermarks so that
   we can more easily debug how/why they were rejected.

Cc: Lyude Paul <cpaul@redhat.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463061971-19638-17-git-send-email-matthew.d.roper@intel.com
2016-05-13 07:36:04 -07:00
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