linux-kernel - Re: [PATCH v2 2/4] ASoC: es8316: Enable support for MCLK div by 2

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Message-ID: <87zg2ax6h4.fsf@mutex.one>
Date:   Mon, 28 Aug 2023 23:22:15 +0300
From:   Marian Postevca <posteuca@...ex.one>
To:     Mark Brown <broonie@...nel.org>
Cc:     Takashi Iwai <tiwai@...e.com>, Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] ASoC: es8316: Enable support for MCLK div by 2

Mark Brown <broonie@...nel.org> writes:

>
> In general a MCLK that allows you to configure the dividers in the CODEC
> appropriately for use.  So long as it works your change looks fine I
> think modulo.
Sorry, maybe this question is dumb, but I am not familiar with this
expression. What do you mean by "your change looks fine I think modulo"?

>> +	do {
>> +		/* Validate supported sample rates that are autodetected from MCLK */
>> +		for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
>> +			const unsigned int ratio = supported_mclk_lrck_ratios[i];
>> +
>> +			if (clk % ratio != 0)
>> +				continue;
>> +			if (clk / ratio == params_rate(params))
>> +				break;
>> +		}
>
> Use ARRAY_SIZE()
>
Do you mean instead of all instances of NR_SUPPORTED_MCLK_LRCK_RATIOS?
If so, it's already defined as:
#define NR_SUPPORTED_MCLK_LRCK_RATIOS ARRAY_SIZE(supported_mclk_lrck_ratios)

If not, then I don't see where else I could use it.