[Intel-gfx] [PATCH 09/22] drm/i915: more clock gating disables on VLV

[Jesse Barnes]

Disable a swath of clock gating bits pending further testing and
measurement.

Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 drivers/gpu/drm/i915/intel_pm.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e8d416c..2820707 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3851,7 +3851,16 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
 	 * Disable clock gating on th GCFG unit to prevent a delay
 	 * in the reporting of vblank events.
 	 */
-	I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS);
+	I915_WRITE(VLV_GUNIT_CLOCK_GATE, 0xffffffff);
+
+	/* Need testing & additional review on newer hw */
+	I915_WRITE(0x9400, 0xffffffff);
+	I915_WRITE(0x9404, 0xffffffff);
+	I915_WRITE(0x9408, 0xffffffff);
+	I915_WRITE(0x940c, 0xffffffff);
+	I915_WRITE(0x9410, 0xffffffff);
+	I915_WRITE(0x9414, 0xffffffff);
+	I915_WRITE(0x9418, 0xffffffff);
 }
 
 static void g4x_init_clock_gating(struct drm_device *dev)
-- 
1.7.9.5