linux-kernel - Re: [PATCH v2 2/2] ASoC: nau8325: new driver

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Date: Thu, 22 Feb 2024 15:47:34 +0000
From: Mark Brown <broonie@...nel.org>
To: Seven Lee <wtli@...oton.com>
Cc: lgirdwood@...il.com, alsa-devel@...a-project.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	robh+dt@...nel.org, conor+dt@...nel.org, YHCHuang@...oton.com,
	KCHSU0@...oton.com, CTLIN0@...oton.com, SJLIN0@...oton.com,
	scott6986@...il.com, supercraig0719@...il.com, dardar923@...il.com
Subject: Re: [PATCH v2 2/2] ASoC: nau8325: new driver

On Thu, Feb 22, 2024 at 04:38:25PM +0800, Seven Lee wrote:

A few very minor things below but basically this looks good.

> +static int nau8325_clksrc_choose(struct nau8325 *nau8325,
> +				 const struct nau8325_srate_attr **srate_table,
> +				 int *n1_sel, int *mult_sel, int *n2_sel)
> +{

> +proc_done:
> +	dev_err(nau8325->dev, "nau8325->fs=%d,range=0x%x, %s, (n1,mu,n2,dmu):(%d,%d,%d), MCLK_SRC=%uHz (%d)",
> +		nau8325->fs, (*srate_table)->range,
> +		(*srate_table)->max ? "MAX" : "MIN",
> +		*n1_sel == CLK_PROC_BYPASS ?
> +		CLK_PROC_BYPASS : mclk_n1_div[*n1_sel].param,
> +		*mult_sel == CLK_PROC_BYPASS ?
> +		CLK_PROC_BYPASS : 1 << mclk_n3_mult[*mult_sel].param,
> +		1 << mclk_n2_div[*n2_sel].param,
> +		(*srate_table)->mclk_src[ratio],
> +		(*srate_table)->mclk_src[ratio] / nau8325->fs);

This should be a dev_dbg(), dev_err() will be very noisy in normal
operation.

> +static int nau8325_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
> +{
> +	struct snd_soc_component *component = dai->component;
> +	struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
> +	unsigned int ctrl1_val = 0;
> +
> +	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
> +	case SND_SOC_DAIFMT_CBS_CFS:
> +		break;

Please use the modern _CBC_CFC defines.

> +	ret = regmap_read(nau8325->regmap, NAU8325_R02_DEVICE_ID, &value);
> +	if (ret) {
> +		dev_err(dev, "Failed to read device id (%d)", ret);
> +		goto err;
> +	}

Probably a good idea to check that the device ID is what we expected
too.

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