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

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On Monday 14 July 2014 08:47 PM, Jesse Barnes wrote:
On Tue, 15 Jul 2014 13:05:48 +0530
Deepak S <deepak.s@xxxxxxxxxxxxxxx> wrote:

On Friday 20 June 2014 08:03 PM, deepak.s@xxxxxxxxxxxxxxx wrote:
From: Deepak S <deepak.s@xxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx>
---
   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
Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>


Thanks for reviewing

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