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drm/i915: Only flush fbc on sw when fbc is enabled. 

Avoid touching fbc register when fbc is disabled.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2014-09-05 16:57:20 -04:00 committed by Daniel Vetter
parent 24955f2412
commit 01d06e9f96
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/intel_pm.c
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@ -352,6 +352,9 @@ void gen8_fbc_sw_flush(struct drm_device *dev, u32 value)
if (!IS_GEN8(dev))
return;
if (!intel_fbc_enabled(dev))
return;
I915_WRITE(MSG_FBC_REND_STATE, value);
}