Attachment 101998 Details for Bug 80703 – 0001-drm-i915-Read-the-well-status-before-reading-control.patch

0001-drm-i915-Read-the-well-status-before-reading-control.patch

0001-drm-i915-Read-the-well-status-before-reading-control.patch (text/plain), 1.69 KB, created by Guo Jinxian on 2014-06-30 07:00:47 UTC

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Creator: Guo Jinxian

Created: 2014-06-30 07:00:47 UTC

Size: 1.69 KB

patch

obsolete

>From 787fa06e3fbbcd377be35556fa8d7a1bf313146f Mon Sep 17 00:00:00 2001
>From: Deepak S <deepak.s@linux.intel.com>
>Date: Tue, 1 Jul 2014 08:23:25 +0530
>Subject: [PATCH] drm/i915: Read the well status before reading control
> register
>
>Signed-off-by: Deepak S <deepak.s@linux.intel.com>
>---
> drivers/gpu/drm/i915/i915_debugfs.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
>index a93b3bf..50e48b3 100644
>--- a/drivers/gpu/drm/i915/i915_debugfs.c
>+++ b/drivers/gpu/drm/i915/i915_debugfs.c
>@@ -1288,11 +1288,12 @@ static int vlv_drpc_info(struct seq_file *m)
> 	struct drm_info_node *node = m->private;
> 	struct drm_device *dev = node->minor->dev;
> 	struct drm_i915_private *dev_priv = dev->dev_private;
>-	u32 rpmodectl1, rcctl1;
>+	u32 rpmodectl1, rcctl1, rcstatus;
> 	unsigned fw_rendercount = 0, fw_mediacount = 0;
> 
> 	intel_runtime_pm_get(dev_priv);
> 
>+	rcstatus = I915_READ(VLV_GTLC_PW_STATUS);
> 	rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
> 	rcctl1 = I915_READ(GEN6_RC_CONTROL);
> 
>@@ -1311,11 +1312,9 @@ static int vlv_drpc_info(struct seq_file *m)
> 		   yesno(rcctl1 & (GEN7_RC_CTL_TO_MODE |
> 					GEN6_RC_CTL_EI_MODE(1))));
> 	seq_printf(m, "Render Power Well: %s\n",
>-			(I915_READ(VLV_GTLC_PW_STATUS) &
>-				VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
>+			(rcstatus &	VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
> 	seq_printf(m, "Media Power Well: %s\n",
>-			(I915_READ(VLV_GTLC_PW_STATUS) &
>-				VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
>+			(rcstatus &	VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
> 
> 	seq_printf(m, "Render RC6 residency since boot: %u\n",
> 		   I915_READ(VLV_GT_RENDER_RC6));
>-- 
>1.9.1
>

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