[Intel-gfx] [PATCH 07/10] drm/i915: VLV/CHV PSR: Increase wait delay time before active PSR.

[R, Durgadoss]

>-----Original Message-----
>From: Intel-gfx [mailto:intel-gfx-bounces at lists.freedesktop.org] On Behalf Of
>Rodrigo Vivi
>Sent: Wednesday, October 29, 2014 12:16 AM
>To: intel-gfx at lists.freedesktop.org
>Cc: Vivi, Rodrigo
>Subject: [Intel-gfx] [PATCH 07/10] drm/i915: VLV/CHV PSR: Increase wait delay
>time before active PSR.
>
>Since active function on VLV immediately activate PSR let's give more
>time for idleness.
>
>Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
>---
> drivers/gpu/drm/i915/intel_dp.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>index 6829ecb..ded73ae 100644
>--- a/drivers/gpu/drm/i915/intel_dp.c
>+++ b/drivers/gpu/drm/i915/intel_dp.c
>@@ -2666,6 +2666,11 @@ void intel_edp_psr_flush(struct drm_device *dev,
> 	struct drm_i915_private *dev_priv = dev->dev_private;
> 	struct drm_crtc *crtc;
> 	enum pipe pipe;
>+	/* On HSW/BDW Hardware controls idle_frames to go to PSR entry state
>+	* However on VLV we go to PSR active state with psr work. So let's
>+	* wait more time and let the user experience smoth enough.

s/smoth/smooth

otherwise looks fine..

>+	*/
>+	int delay = msecs_to_jiffies(HAS_DDI(dev) ? 100 : 5000);
>
> 	mutex_lock(&dev_priv->psr.lock);
> 	if (!dev_priv->psr.enabled) {
>@@ -2688,8 +2693,7 @@ void intel_edp_psr_flush(struct drm_device *dev,
> 		intel_edp_psr_exit(dev);
>
> 	if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)
>-		schedule_delayed_work(&dev_priv->psr.work,
>-				      msecs_to_jiffies(100));
>+		schedule_delayed_work(&dev_priv->psr.work, delay);
> 	mutex_unlock(&dev_priv->psr.lock);
> }
>
>--
>1.9.3
>
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