linux-kernel - Re: [PATCH v3 5/5] ASoC: tda998x: adjust the audio CTS

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Message-ID: <20140204180922.GN22609@sirena.org.uk>
Date:	Tue, 4 Feb 2014 18:09:22 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Jean-Francois Moine <moinejf@...e.fr>
Cc:	alsa-devel@...a-project.org, Dave Airlie <airlied@...il.com>,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Rob Clark <robdclark@...il.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>
Subject: Re: [PATCH v3 5/5] ASoC: tda998x: adjust the audio CTS_N pre-divider
 from audio format

On Thu, Jan 30, 2014 at 12:08:06PM +0100, Jean-Francois Moine wrote:

> -	if (format == p->audio_format) {
> +	if (format == p->audio_format &&
> +	    params_format(params) == priv->audio_sample_format) {
>  		reg_write(priv, REG_ENA_AP, p->audio_cfg);
>  		return;

I find the above confusing and probably deserving of a comment
explaining the logic.  I think it's trying to skip noop configuration
updates?

>  	}
>  	p->audio_format = format;
> +	priv->audio_sample_format = params_format(params);

You should be using params_width() for the number of bits per sample.

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