[alsa-devel] [PATCH] ASoC: lm49453: Fix analog and digital volume ranges

[Peter Ujfalusi]

Hi Swami,

On 12/06/2012 09:07 AM, Reddy, M.R. Swami wrote:
> Thanks Vinod. Yes, the ADC tlvs missed... I will update the patch.  

and while you are there, please fix the commit message as well.

> 
> Thanks
> Swami
> 
> -----Original Message-----
> From: Vinod Koul [mailto:vinod.koul at linux.intel.com] 
> Sent: Thursday, December 06, 2012 12:59 AM
> To: Reddy, M.R. Swami
> Cc: broonie at opensource.wolfsonmicro.com; Girdwood, Liam; Deshpande A, Vishwas; alsa-devel at alsa-project.org
> Subject: Re: [alsa-devel] [PATCH] ASoC: lm49453: Fix analog and digital volume ranges
> 
> On Wed, 2012-12-05 at 16:18 +0530, MR.Swami.Reddy at ti.com wrote:
> 
>>  /* TLV Declarations */
>>  static const DECLARE_TLV_DB_SCALE(digital_tlv, -7650, 150, 1); 
>> -static const DECLARE_TLV_DB_SCALE(port_tlv, 0, 600, 0);
>> +static const DECLARE_TLV_DB_SCALE(analog_tlv, 0, 200, 1);
> The spec says your analog gain are 0 to 30dB in steps of 2dB, this doesnt sound right to me.
>> +static const DECLARE_TLV_DB_SCALE(port_tlv, -1800, 600, 0);
>>  
>>  static const struct snd_kcontrol_new 
>> lm49453_sidetone_mixer_controls[] = {
>>  /* Sidetone supports mono only */
>> @@ -516,9 +517,9 @@ SOC_DAPM_SINGLE_TLV("Sidetone DMIC2R Volume", 
>> LM49453_P0_STN_VOL_DMIC2R_REG,  static const struct snd_kcontrol_new lm49453_snd_controls[] = {
>>  	/* mic1 and mic2 supports mono only */
>>  	SOC_SINGLE_TLV("Mic1 Volume", LM49453_P0_ADC_LEVELL_REG, 0, 6,
>> -			0, digital_tlv),
>> +			0, analog_tlv),
> now i see a  problem.
> You have hidden the MIC gains and exposed only ADC gains. The name is wrong causing the confusion. Please make this ADC gain and add new control for MIC gain!
> Your ADC gain is -76 to 18db, with 0.5dB steps, how does this reflect that?
> 
>>  	SOC_SINGLE_TLV("Mic2 Volume", LM49453_P0_ADC_LEVELR_REG, 0, 6,
>> -			0, digital_tlv),
>> +			0, analog_tlv),
> Ditto.....
>>  
>>  	SOC_DOUBLE_R_TLV("DMIC1 Volume", LM49453_P0_DMIC1_LEVELL_REG,
>>  			  LM49453_P0_DMIC1_LEVELR_REG, 0, 6, 0, digital_tlv), 
>> _______________________________________________
>> Alsa-devel mailing list
>> Alsa-devel at alsa-project.org
>> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 
> 
> --
> ~Vinod
> 
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> 


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