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[02/11] drm/i915/skl: Updated intel_gpu_freq() and intel_freq_opcode()

Message ID 1425620244-12637-3-git-send-email-akash.goel@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

akash.goel@intel.com March 6, 2015, 5:37 a.m. UTC 
From: Akash Goel <akash.goel@intel.com>

On SKL, frequency is specified in units of 16.66 MHZ.
Updated the intel_gpu_freq() and intel_freq_opecode() functions
to do the conversion appropriately.

Signed-off-by: Akash Goel <akash.goel@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e710b43..1b44eee 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6708,7 +6708,9 @@  static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val)
 
 int intel_gpu_freq(struct drm_i915_private *dev_priv, int val)
 {
-	if (IS_CHERRYVIEW(dev_priv->dev))
+	if (IS_GEN9(dev_priv->dev))
+		return (val * GT_FREQUENCY_MULTIPLIER) / GEN9_FREQ_SCALER;
+	else if (IS_CHERRYVIEW(dev_priv->dev))
 		return chv_gpu_freq(dev_priv, val);
 	else if (IS_VALLEYVIEW(dev_priv->dev))
 		return byt_gpu_freq(dev_priv, val);
@@ -6718,7 +6720,9 @@  int intel_gpu_freq(struct drm_i915_private *dev_priv, int val)
 
 int intel_freq_opcode(struct drm_i915_private *dev_priv, int val)
 {
-	if (IS_CHERRYVIEW(dev_priv->dev))
+	if (IS_GEN9(dev_priv->dev))
+		return (val * GEN9_FREQ_SCALER) / GT_FREQUENCY_MULTIPLIER;
+	else if (IS_CHERRYVIEW(dev_priv->dev))
 		return chv_freq_opcode(dev_priv, val);
 	else if (IS_VALLEYVIEW(dev_priv->dev))
 		return byt_freq_opcode(dev_priv, val);