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>
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index 56ba876..1063108 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -624,17 +624,11 @@
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,