linux-kernel - Re: [alsa-devel][PATCH 1/4] ASoC: wm8960: Let wm8960 codec driver manage its own MCLK

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Message-ID: <20150106173711.GH2634@sirena.org.uk>
Date:	Tue, 6 Jan 2015 17:37:11 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Zidan Wang <b50113@...escale.com>
Cc:	lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.de,
	lars@...afoo.de, ckeepax@...nsource.wolfsonmicro.com,
	Li.Xiubo@...escale.com, patches@...nsource.wolfsonmicro.com,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel][PATCH 1/4] ASoC: wm8960: Let wm8960 codec driver
 manage its own MCLK

On Wed, Dec 31, 2014 at 11:39:11AM +0800, Zidan Wang wrote:

> +		if (!IS_ERR(wm8960->mclk)) {
> +			if (codec->dapm.bias_level == SND_SOC_BIAS_ON)
> +				clk_disable_unprepare(wm8960->mclk);
> +			else {

Both sides of the if statement should have braces if one does, though in
this case nesting a second switch statement would probably be clearer.

> @@ -661,6 +678,7 @@ static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
>  
>  		/* Disable VMID and VREF, let them discharge */
>  		snd_soc_write(codec, WM8960_POWER1, 0);
> +
>  		msleep(600);
>  		break;
>  	}

Random while space change here and in a couple of other places.

> +	wm8960->mclk = devm_clk_get(&i2c->dev, "codec_mclk");
> +	if (IS_ERR(wm8960->mclk)) {
> +		if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
> +			return -EPROBE_DEFER;
> +	}
> +

Why name this "codec_mclk" - the device calls it just MCLK?

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