[alsa-devel] [PATCH 6/7] ASoC: max9867: Fix BSEL value in master mode.

[Alexandre Belloni]

This also needs a proper commit message.

On 30/01/2018 at 12:10:33 +0100, Ladislav Michl wrote:
> Signed-off-by: Ladislav Michl <ladis at linux-mips.org>
> ---
>  Note: It should be reconsidered where BSEL should be set.
> 
>  sound/soc/codecs/max9867.c | 43 +++----------------------------------------
>  1 file changed, 3 insertions(+), 40 deletions(-)
> 
> diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c
> index 026b7cf94910..6272cf5df4a9 100644
> --- a/sound/soc/codecs/max9867.c
> +++ b/sound/soc/codecs/max9867.c
> @@ -148,46 +148,6 @@ static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
>  			MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
>  		regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
>  			MAX9867_PLL, MAX9867_PLL);
> -	} else {
> -		unsigned long int bclk_rate, pclk_bclk_ratio;
> -		int bclk_value;
> -
> -		bclk_rate = params_rate(params) * 2 * params_width(params);
> -		pclk_bclk_ratio = max9867->pclk/bclk_rate;
> -		switch (params_width(params)) {
> -		case 8:
> -		case 16:
> -			switch (pclk_bclk_ratio) {
> -			case 2:
> -				bclk_value = MAX9867_IFC1B_PCLK_2;
> -				break;
> -			case 4:
> -				bclk_value = MAX9867_IFC1B_PCLK_4;
> -				break;
> -			case 8:
> -				bclk_value = MAX9867_IFC1B_PCLK_8;
> -				break;
> -			case 16:
> -				bclk_value = MAX9867_IFC1B_PCLK_16;
> -				break;
> -			default:
> -				dev_err(codec->dev,
> -					"unsupported sampling rate\n");
> -				return -EINVAL;
> -			}
> -			break;
> -		case 24:
> -			bclk_value = MAX9867_IFC1B_24BIT;
> -			break;
> -		case 32:
> -			bclk_value = MAX9867_IFC1B_32BIT;
> -			break;
> -		default:
> -			dev_err(codec->dev, "unsupported sampling rate\n");
> -			return -EINVAL;
> -		}
> -		regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
> -			MAX9867_IFC1B_BCLK_MASK, bclk_value);
>  	}
>  	return 0;
>  }
> @@ -244,6 +204,9 @@ static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
>  	value &= ~MAX9867_FREQ_MASK;
>  	regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
>  			MAX9867_PSCLK_MASK, value);
> +	regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
> +			MAX9867_IFC1B_BCLK_MASK, 0x010);

This magic value has to be defined somewhere.

> +
>  	return 0;
>  }
>  
> -- 
> 2.15.1
> 

-- 
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com