[Intel-gfx] [PATCH] drm/i915: Clear FORCEWAKE when taking over from BIOS

[Mika Kuoppala]

On Fri, 19 Oct 2012 09:02:10 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Fri, 19 Oct 2012 10:22:49 +0300, Mika Kuoppala <mika.kuoppala at linux.intel.com> wrote:
> > Would it be possible to call in here:
> > 
> >       if (HAS_FORCE_WAKE(dev))
> >          dev_priv->gt.force_wake_put(dev_priv);
> > 
> > and get rid of the per gen forcewake resets?
> 
> No. Perhaps I would have better gone with intel_gt_sanitize(), as the
> purpose is not to undo our own settings of the forcewake but undo that
> of nefarious foreign interests such as the BIOS. As such we need to
> explicitly clear the register rather than clear a bit.
> -Chris

Thanks for explanation.

Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>

> -- 
> Chris Wilson, Intel Open Source Technology Centre
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