[PATCH 7/7] drm/i915: Upclock on the first residency calculation

From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 7/7] drm/i915: Upclock on the first residency calculation
Date: Tue, 14 Mar 2017 15:17:29 +0200	[thread overview]
Message-ID: <1489497449-31640-7-git-send-email-mika.kuoppala@intel.com> (raw)
In-Reply-To: <1489497449-31640-1-git-send-email-mika.kuoppala@intel.com>

After ei reset, upclock as default if we don't have a previous
timestamp at hand. We might at sometimes waste one interval
of more power but also be more agile if we need to ramp up.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 5ec12cf..aacb654 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1118,6 +1118,8 @@ static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
 			events = GEN6_PM_RP_UP_THRESHOLD;
 		else if (c0 < time * dev_priv->rps.down_threshold)
 			events = GEN6_PM_RP_DOWN_THRESHOLD;
+	} else {
+		events = GEN6_PM_RP_UP_THRESHOLD;
 	}
 
 	dev_priv->rps.ei = now;
-- 
2.7.4

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