[alsa-devel] [PATCH 1/2] ASoC: tlv320aic3x: Convert mic bias to a supply widget

[Peter Ujfalusi]

On 01/30/2013 02:22 PM, Hebbar Gururaja wrote:
> @@ -1493,6 +1544,28 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
>  			aic3x->setup = ai3x_setup;
>  		}
>  
> +		if (!of_property_read_u32(np, "ai3x-micbias-vg", &value)) {
> +			switch (value) {
> +			case 1 :
> +				aic3x->micbias_vg = AIC3X_MICBIAS_2_0V;
> +				break;
> +			case 2 :
> +				aic3x->micbias_vg = AIC3X_MICBIAS_2_5V;
> +				break;
> +			case 3 :
> +				aic3x->micbias_vg = AIC3X_MICBIAS_AVDDV;
> +				break;
> +			default :
> +				aic3x->micbias_vg = AIC3X_MICBIAS_OFF;
> +				dev_err(&i2c->dev, "Unsuitable MicBias voltage "
> +							"found in DT\n");
> +			}
> +		} else {
> +			dev_warn(&i2c->dev, "No MicBias voltage found in DT - "
> +							"using default\n");

Since "ai3x-micbias-vg" property is optional I don't think it is appropriate
to print anything here. If you really want a note about this it should be
dev_info().

> +			aic3x->micbias_vg = AIC3X_MICBIAS_OFF;
> +		}
> +
>  	} else {
>  		aic3x->gpio_reset = -1;
>  	}
> diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h
> index 6db3c41..e521ac3 100644
> --- a/sound/soc/codecs/tlv320aic3x.h
> +++ b/sound/soc/codecs/tlv320aic3x.h
> @@ -238,6 +238,10 @@
>  /* Default input volume */
>  #define DEFAULT_GAIN    0x20
>  
> +/* MICBIAS Control Register */
> +#define MICBIAS_LEVEL_SHIFT	(6)
> +#define MICBIAS_LEVEL_MASK	(3 << 6)
> +
>  /* headset detection / button API */
>  
>  /* The AIC3x supports detection of stereo headsets (GND + left + right signal)
> 


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