drm/i915: Engage the DP scramble reset for pipe C on CHV

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To get stable CRCs from the DP CRC source we need to reset the
scrambler for each frame. Enable the reset feature when grabbing
CRCs for pipe C on CHV. Pipes A and B were already covered due
sharing the code with VLV.

We can safely extend PIPE_SCRAMBLE_RESET_MASK to deal with CHV since
the extra bit was MBZ on the older platforms.

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

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Ville Syrjälä 2014-12-09 21:28:28 +02:00 • committed by Daniel Vetter

parent 16e5ab14d7

commit eb736679aa

2 changed files with 24 additions and 6 deletions

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27

drivers/gpu/drm/i915/i915_debugfs.c

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3

drivers/gpu/drm/i915/i915_reg.h

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