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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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
---------------------------------------------------------------------
Intel Finland Oy
Registered Address: PL 281, 00181 Helsinki 
Business Identity Code: 0357606 - 4 
Domiciled in Helsinki 

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.



[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]
  Powered by Linux