RE: [PATCH 1/9] ASoC: max98927: Added support for DSP_A and DSP_B format

[Ryan Lee]

>-----Original Message-----
>From: Mark Brown [mailto:broonie@xxxxxxxxxx]
>Sent: Tuesday, August 29, 2017 12:00 PM
>To: Ryan Lee <RyanS.Lee@xxxxxxxxxxxxxxxxxxx>
>Cc: lgirdwood@xxxxxxxxx; perex@xxxxxxxx; tiwai@xxxxxxxx;
>kuninori.morimoto.gx@xxxxxxxxxxx; alsa-devel@xxxxxxxxxxxxxxxx; linux-
>kernel@xxxxxxxxxxxxxxx; ryan.lee.maxim@xxxxxxxxx
>Subject: Re: [PATCH 1/9] ASoC: max98927: Added support for DSP_A and DSP_B
>format
>
>On Mon, Aug 28, 2017 at 04:30:53PM -0700, Ryan Lee wrote:
>
>> +	if ((max98927->iface == SND_SOC_DAIFMT_DSP_A) ||
>> +	    (max98927->iface == SND_SOC_DAIFMT_DSP_B))
>> +		return 0;
>> +
>> +	/* BCLK configuration */
>
>Why do we not configure the BCLK in DSP modes?  That's unusual and seems
>likely to break some systems that rely on exact clocking.

I put this code to avoid overwrite BCLK value in TDM mode. BCLK is being configured by ' max98927_dai_tdm_slot'.
Now I added one more variable to check TDM mode instead of checking DAI_FMT.

>
>Also if we're selecting on format a switch statement is generally better to make
>any further special casing easier in future.

OK. Thanks. But I kept if statement on the modified version because it only have two cases, tdm and non-tdm.