drm/i915: Fix GT wake FIFO free entries for VLV

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On VLV the GTFIFOCTL register has other bits besides the number of free
entries in the GT wake FIFO. Apply a mask when we read th register to
make sure we don't misinterpret the number of free FIFO entries.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: There's some unclarity about hsw, but brushed off as todays'
Bspec just acting up a bit.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2013-11-14 02:00:00 +02:00 • committed by Daniel Vetter

parent 90f256b5bb

commit 46520e2baa

2 changed files with 5 additions and 4 deletions

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3

drivers/gpu/drm/i915/i915_reg.h

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6

drivers/gpu/drm/i915/intel_uncore.c

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