[Intel-gfx] [PATCH v4] drm/i915: Force GPU Freq to lowest while suspending.

[Deepak S]

On Friday 20 June 2014 08:03 PM, deepak.s at linux.intel.com wrote:
> From: Deepak S <deepak.s at linux.intel.com>
>
> We might be leaving the GPU Frequency (and thus vnn) high during the suspend.
> Force gt to move to lowest freq while suspending.
>
> v2: Fixed typo in commit message (Deepak)
>
> v3: Force gt to lowest freq in suspend_gt_powersave (Daniel)
>
> v4: Add GPU min freq set _after_ we've cancelled the rps works (Daniel)
>
> Signed-off-by: Deepak S <deepak.s at linux.intel.com>
> ---
>   drivers/gpu/drm/i915/intel_pm.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 2043c4b..0543407 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4884,6 +4884,9 @@ void intel_suspend_gt_powersave(struct drm_device *dev)
>   	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
>   
>   	cancel_work_sync(&dev_priv->rps.work);
> +
> +	/* Force GPU to min freq during suspend */
> +	gen6_rps_idle(dev_priv);
>   }
>   
>   void intel_disable_gt_powersave(struct drm_device *dev)

Hi Jesse,

Please review the patch

Thanks
Deepak