[alsa-devel] [PATCH 1/6] ASoC: rt5645: change micbias widget type to supply.

[Hans de Goede]

Hi,

On 03-01-18 11:50, Mark Brown wrote:
> On Tue, Jan 02, 2018 at 07:53:09PM +0100, Hans de Goede wrote:
> 
>> Register "micbias1" and "micbias2" to supply widegts as modern drivers do.
> 
>> -	SND_SOC_DAPM_MICBIAS("micbias1", RT5645_PWR_ANLG2,
>> -			RT5645_PWR_MB1_BIT, 0),
>> -	SND_SOC_DAPM_MICBIAS("micbias2", RT5645_PWR_ANLG2,
>> -			RT5645_PWR_MB2_BIT, 0),
>> +	SND_SOC_DAPM_SUPPLY("micbias1", RT5645_PWR_ANLG2,
>> +			RT5645_PWR_MB1_BIT, 0, NULL, 0),
>> +	SND_SOC_DAPM_SUPPLY("micbias2", RT5645_PWR_ANLG2,
>> +			RT5645_PWR_MB2_BIT, 0, NULL, 0),
> 
> This is a good change to make but we have machines with the rt5645, are
> we sure none of them use microphones?  The two widget types work
> differently so it needs some checking and possibly machine driver
> updates to convert.

Right, we have existing machines with a rt5645 and an internal
analog mic, but those have been broken sofar (I can confirm
this for Cherry Trail based devices, I assume it applies
elsewhere) because without the next patch in this series we
were never actually enabling micbias. So this change should be
fine as analog mic support has been broken sofar anyways AFAIK.

Regards,

Hans