[alsa-devel] [PATCH 08/18] ASoC: twl4030: Use snd_pcm_hw_constraint_single()

[Peter Ujfalusi]

On 10/18/2015 04:39 PM, Lars-Peter Clausen wrote:
> Use the new snd_pcm_hw_constraint_single() helper function instead of
> calling snd_pcm_hw_constraint_minmax() with the same value for min and max
> to install a constraint that limits the possible configuration values to a
> single value. Using snd_pcm_hw_constraint_single() makes the indented
> result clearer and is slightly shorter.
> 
> Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>

Acked-by: Peter Ujfalusi <peter.ujfalusi at ti.com>

> ---
>  sound/soc/codecs/twl4030.c | 13 +++++--------
>  1 file changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
> index 2713e18..a5a4e9f 100644
> --- a/sound/soc/codecs/twl4030.c
> +++ b/sound/soc/codecs/twl4030.c
> @@ -1612,19 +1612,16 @@ static void twl4030_constraints(struct twl4030_priv *twl4030,
>  		return;
>  
>  	/* Set the constraints according to the already configured stream */
> -	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
> +	snd_pcm_hw_constraint_single(slv_substream->runtime,
>  				SNDRV_PCM_HW_PARAM_RATE,
> -				twl4030->rate,
>  				twl4030->rate);
>  
> -	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
> +	snd_pcm_hw_constraint_single(slv_substream->runtime,
>  				SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
> -				twl4030->sample_bits,
>  				twl4030->sample_bits);
>  
> -	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
> +	snd_pcm_hw_constraint_single(slv_substream->runtime,
>  				SNDRV_PCM_HW_PARAM_CHANNELS,
> -				twl4030->channels,
>  				twl4030->channels);
>  }
>  
> @@ -1669,9 +1666,9 @@ static int twl4030_startup(struct snd_pcm_substream *substream,
>  			/* In option2 4 channel is not supported, set the
>  			 * constraint for the first stream for channels, the
>  			 * second stream will 'inherit' this cosntraint */
> -			snd_pcm_hw_constraint_minmax(substream->runtime,
> +			snd_pcm_hw_constraint_single(substream->runtime,
>  						     SNDRV_PCM_HW_PARAM_CHANNELS,
> -						     2, 2);
> +						     2);
>  		}
>  		twl4030->master_substream = substream;
>  	}
> 


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