[Intel-gfx] [PATCH 2/3] drm/i915: Use cached cdclk value in i915_audio_component_get_cdclk_freq()

[Mika Kahola]

Looks reasonable.

Reviewed-by: Mika Kahola <mika.kahola at intel.com>

On Tue, 2016-04-26 at 19:46 +0300, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> No point in reading the cdclk out from the hardware every single time
> since we have it cached already. Just return the cached value to the
> audio driver.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_audio.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
> index 56ba8765816e..1063108a9bab 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -624,17 +624,11 @@ static void i915_audio_component_codec_wake_override(struct device *dev,
>  static int i915_audio_component_get_cdclk_freq(struct device *dev)
>  {
>  	struct drm_i915_private *dev_priv = dev_to_i915(dev);
> -	int ret;
>  
>  	if (WARN_ON_ONCE(!HAS_DDI(dev_priv)))
>  		return -ENODEV;
>  
> -	intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO);
> -	ret = dev_priv->display.get_display_clock_speed(dev_priv->dev);
> -
> -	intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO);
> -
> -	return ret;
> +	return dev_priv->cdclk_freq;
>  }
>  
>  static int i915_audio_component_sync_audio_rate(struct device *dev,

-- 
Mika Kahola - Intel OTC