On Thu, Feb 26, 2015 at 06:19:38PM +0530, akash.goel@xxxxxxxxx wrote:
> From: Akash Goel <akash.goel@xxxxxxxxx>
>
> 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@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 7dcb5b6..1b36d0e 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -6660,7 +6660,9 @@ 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);
> @@ -6670,7 +6672,9 @@ 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);
> --
> 1.9.2
>
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--
Ville Syrjälä
Intel OTC
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