From: Akash Goel Date: Tue, 25 Mar 2014 12:31:50 +0000 (+0530) Subject: drm/i915: Remove the enabling of VS_TIMER_DISPATCH bit in MI MODE reg X-Git-Tag: v3.15-rc1~51^2~1^2~37 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=61a563a2a6ada193a022666b51ec8bb64112efc5;p=karo-tx-linux.git drm/i915: Remove the enabling of VS_TIMER_DISPATCH bit in MI MODE reg This patch Removes the VS_TIMER_DISPATCH bit enable in MI MODE reg for platforms > Gen6. VS_TIMER_DISPATCH bit enable was earlier required as a part of WA 'WaTimedSingleVertexDispatch', which is now applicable only to platforms < Gen7. v2: Enhancing the scope of the patch to full Gen7 (Chris) v3: Modifying the WA condition to the cover the applicable platforms, and adding the WA name in comments. (Ville) Signed-off-by: Akash Goel Signed-off-by: Sourab Gupta Tested-by: Chris Wilson # ivb, hsw -Chris Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 4eb3e062b4e3..bfb5d75cc1c5 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -566,7 +566,8 @@ static int init_render_ring(struct intel_ring_buffer *ring) struct drm_i915_private *dev_priv = dev->dev_private; int ret = init_ring_common(ring); - if (INTEL_INFO(dev)->gen > 3) + /* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */ + if (INTEL_INFO(dev)->gen >= 4 && INTEL_INFO(dev)->gen < 7) I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH)); /* We need to disable the AsyncFlip performance optimisations in order