[alsa-devel] [PATCH 1/2] ASoC: utils: Add internal call to determine if DAI is dummy.

[Takashi Iwai]

At Wed,  8 Jan 2014 10:40:18 +0000,
Liam Girdwood wrote:
> 
> Provide a quick way to tell if a DAI is a dummy DAI or a regular DAI.
> This is for internal DAPM usage only and is used to determe whether to

determine?

> insert a DAI link connection into the DAPM graph.
> 
> Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
> ---
>  include/sound/soc-dai.h | 2 ++
>  sound/soc/soc-utils.c   | 7 +++++++
>  2 files changed, 9 insertions(+)
> 
> diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
> index 243d3b6..71f27c4 100644
> --- a/include/sound/soc-dai.h
> +++ b/include/sound/soc-dai.h
> @@ -123,6 +123,8 @@ int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
>  int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
>  			     int direction);
>  
> +int snd_soc_dai_is_dummy(struct snd_soc_dai *dai);

Better to use bool.

> +
>  struct snd_soc_dai_ops {
>  	/*
>  	 * DAI clocking configuration, all optional.
> diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c
> index 6ebdfd9..7f22ca3 100644
> --- a/sound/soc/soc-utils.c
> +++ b/sound/soc/soc-utils.c
> @@ -119,6 +119,13 @@ static struct snd_soc_dai_driver dummy_dai = {
>  	 },
>  };
>  
> +int snd_soc_dai_is_dummy(struct snd_soc_dai *dai)
> +{
> +	if (dai->driver == &dummy_dai)
> +		return 1;
> +	return 0;
> +}

No need for EXPORT_SYMBOL since it's for internal use only, or just
forgotten?


Takashi

> +
>  static int snd_soc_dummy_probe(struct platform_device *pdev)
>  {
>  	int ret;
> -- 
> 1.8.3.2
> 
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