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drm/i915: Use cached cdclk value in i915_audio_component_get_cdclk_freq() 

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@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461689194-6079-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
This commit is contained in:
Ville Syrjälä 2016-04-26 19:46:33 +03:00
parent 7f1052a8fa
commit 1033f92e15
1 changed files with 1 additions and 7 deletions
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8
drivers/gpu/drm/i915/intel_audio.c
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@ -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,