Attachment 127043 Details for Bug 97965 – Experimental patch for DDL=0, latency=45us, and cursor WM=63

[patch] Experimental patch for DDL=0, latency=45us, and cursor WM=63

0001-Experiment-DDL-0-latency-45us-and-cursor-wm-63.patch (text/plain), 2.26 KB, created by ykku16dev2 on 2016-10-06 04:20:03 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: ykku16dev2

Created: 2016-10-06 04:20:03 UTC

Size: 2.26 KB

patch

obsolete

>From 43f66ae8340c4cd6326d6c984f9eaaa29c93f0f0 Mon Sep 17 00:00:00 2001
>From: Yu Kang Ku <yu.kang.ku@intel.com>
>Date: Tue, 4 Oct 2016 19:21:38 -0700
>Subject: [PATCH] Experiment DDL=0, latency=45us, and cursor wm=63
>
>Change-Id: I47211028b5224504b76dfa372defd42177521878
>---
> drivers/gpu/drm/i915/intel_pm.c | 19 +++++++++++--------
> 1 file changed, 11 insertions(+), 8 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index 5d39ad2..9ed7e5b 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -942,13 +942,13 @@ static void vlv_setup_wm_latency(struct drm_device *dev)
> 	struct drm_i915_private *dev_priv = to_i915(dev);
> 
> 	/* all latencies in usec */
>-	dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 3;
>+	dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 45;
> 
> 	dev_priv->wm.max_level = VLV_WM_LEVEL_PM2;
> 
> 	if (IS_CHERRYVIEW(dev_priv)) {
>-		dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12;
>-		dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33;
>+		dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 45;
>+		dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 45;
> 
> 		dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS;
> 	}
>@@ -965,6 +965,9 @@ static uint16_t vlv_compute_wm_level(struct intel_plane *plane,
> 	if (dev_priv->wm.pri_latency[level] == 0)
> 		return USHRT_MAX;
> 
>+	if (plane->base.type == DRM_PLANE_TYPE_CURSOR)
>+		return 63;
>+
> 	if (!state->base.visible)
> 		return 0;
> 
>@@ -1123,7 +1126,7 @@ static void vlv_compute_wm(struct intel_crtc *crtc)
> 		struct intel_plane_state *state =
> 			to_intel_plane_state(plane->base.state);
> 
>-		if (!state->base.visible)
>+		if ((plane->base.type != DRM_PLANE_TYPE_CURSOR) && !state->base.visible)
> 			continue;
> 
> 		/* normal watermarks */
>@@ -1320,10 +1323,10 @@ static void vlv_merge_wm(struct drm_device *dev,
> 		if (wm->cxsr)
> 			wm->sr = wm_state->sr[wm->level];
> 
>-		wm->ddl[pipe].primary = DDL_PRECISION_HIGH | 2;
>-		wm->ddl[pipe].sprite[0] = DDL_PRECISION_HIGH | 2;
>-		wm->ddl[pipe].sprite[1] = DDL_PRECISION_HIGH | 2;
>-		wm->ddl[pipe].cursor = DDL_PRECISION_HIGH | 2;
>+		wm->ddl[pipe].primary = DDL_PRECISION_HIGH | 0;
>+		wm->ddl[pipe].sprite[0] = DDL_PRECISION_HIGH | 0;
>+		wm->ddl[pipe].sprite[1] = DDL_PRECISION_HIGH | 0;
>+		wm->ddl[pipe].cursor = DDL_PRECISION_HIGH | 0;
> 	}
> }
> 
>-- 
>1.9.1
>

Actions: View | Splinter Review

Attachments on bug 97965: 126837 | 126838 | 126889 | 126911 | 126912 | 126913 | 126914 | 126915 | 126993 | 127007 | 127010 | 127012 | 127013 | 127043 | 127044 | 127107 | 127126 | 127130 | 127159 | 127557 | 127558 | 127636 | 127637

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.