Re: [PATCH 2/2] drm/i915: add Ivy Bridge page flip support

[Jesse Barnes <jbarnes@virtuousgeek.org>]

On Thu, 16 Jun 2011 11:54:50 -0700
Ben Widawsky <ben@bwidawsk.net> wrote:

> On Thu, Jun 16, 2011 at 09:19:14AM -0700, Jesse Barnes wrote:
> > Use the blit ring for submitting flips since the render ring doesn't
> > generate flip complete interrupts.
> > 
> > Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
> > ---
> >  drivers/gpu/drm/i915/intel_display.c |   30 ++++++++++++++++++++++++++++++
> >  1 files changed, 30 insertions(+), 0 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 37e74e9..e842ed9 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -6412,6 +6412,33 @@ out:
> >  	return ret;
> >  }
> >  
> > +static int intel_gen7_queue_flip(struct drm_device *dev,
> > +				 struct drm_crtc *crtc,
> > +				 struct drm_framebuffer *fb,
> > +				 struct drm_i915_gem_object *obj)
> > +{
> > +	struct drm_i915_private *dev_priv = dev->dev_private;
> > +	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> Could you put the bit about why you chose the blitter ring here.
> > +	struct intel_ring_buffer *ring = &dev_priv->ring[BCS];

Oh yeah, good call.  Will update with comments.

-- 
Jesse Barnes, Intel Open Source Technology Center