Attachment 70992 Details for Bug 50248 – Double cursor latency for VLV sr

[patch] Double cursor latency for VLV sr

0001-drm-i915-Double-the-cursor-self-refresh-latency-on-V.patch (text/plain), 1.50 KB, created by Chris Wilson on 2012-12-04 09:58:13 UTC

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Creator: Chris Wilson

Created: 2012-12-04 09:58:13 UTC

Size: 1.50 KB

patch

obsolete

>From b6dfb84cc893d36789513a82f7185277dc7485d7 Mon Sep 17 00:00:00 2001
>From: Chris Wilson <chris@chris-wilson.co.uk>
>Date: Tue, 4 Dec 2012 09:54:58 +0000
>Subject: [PATCH] drm/i915: Double the cursor self-refresh latency on
> Valleyview
>
>It operates at twice the declared latency, so double the latency value
>used for the cursor watermark calculation.
>
>Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
>---
> drivers/gpu/drm/i915/intel_pm.c |    8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index 1e61f5e..20daf58 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -1289,6 +1289,7 @@ static void valleyview_update_wm(struct drm_device *dev)
> 	struct drm_i915_private *dev_priv = dev->dev_private;
> 	int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
> 	int plane_sr, cursor_sr;
>+	int ignore_plane_sr, ignore_cursor_sr;
> 	unsigned int enabled = 0;
> 
> 	vlv_update_drain_latency(dev);
>@@ -1311,7 +1312,12 @@ static void valleyview_update_wm(struct drm_device *dev)
> 			     sr_latency_ns,
> 			     &valleyview_wm_info,
> 			     &valleyview_cursor_wm_info,
>-			     &plane_sr, &cursor_sr))
>+			     &plane_sr, &ignore_cursor_sr) &&
>+	    g4x_compute_srwm(dev, ffs(enabled) - 1,
>+			     2*sr_latency_ns,
>+			     &valleyview_wm_info,
>+			     &valleyview_cursor_wm_info,
>+			     &ignore_plane_sr, &cursor_sr))
> 		I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN);
> 	else
> 		I915_WRITE(FW_BLC_SELF_VLV,
>-- 
>1.7.10.4
>

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