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Since the watermark registers arent double buffered on VLV/CHV, we'll need to play around with intermediate watermarks same was as we do on ILK-BDW. The watermark registers on VLV/CHV contain inverted values, so to find the intermediate watermark value we just take the minimum of the active and optimal values. This also means that, unlike ILK-BDW, there's no chance that we'd fail to find a working intermediate watermarks. As long as both the active and optimal watermarks are valid the intermediate watermarks will come out valid as well. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170302171508.1666-10-ville.syrjala@linux.intel.com |
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