[alsa-devel] [PATCH v6 1/4] drm/i915: Add audio sync_audio_rate callback

[Jani Nikula]

On Wed, 02 Sep 2015, libin.yang at intel.com wrote:
> From: Libin Yang <libin.yang at intel.com>
>
> Add the sync_audio_rate callback.
>
> With the callback, audio driver can trigger
> i915 driver to set the proper N/CTS or N/M
> based on different sample rates.
>
> Signed-off-by: Libin Yang <libin.yang at intel.com>

Reviewed-by: Jani Nikula <jani.nikula at intel.com>

> ---
>  include/drm/i915_component.h | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
> index c9a8b64..8ad6f1b 100644
> --- a/include/drm/i915_component.h
> +++ b/include/drm/i915_component.h
> @@ -33,6 +33,13 @@ struct i915_audio_component {
>  		void (*put_power)(struct device *);
>  		void (*codec_wake_override)(struct device *, bool enable);
>  		int (*get_cdclk_freq)(struct device *);
> +		/**
> +		 * @sync_audio_rate: set n/cts based on the sample rate
> +		 *
> +		 * Called from audio driver. After audio driver sets the
> +		 * sample rate, it will call this function to set n/cts
> +		 */
> +		int (*sync_audio_rate)(struct device *, int port, int rate);
>  	} *ops;
>  };
>  
> -- 
> 1.9.1
>

-- 
Jani Nikula, Intel Open Source Technology Center