linux-kernel - Re: [alsa-devel][PATCH 2/3] ASoC: fsl_sai: Add support for tdm slots operation

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Date:	Wed, 21 Jan 2015 10:08:03 -0800
From:	Nicolin Chen <nicoleotsuka@...il.com>
To:	Zidan Wang <zidan.wang@...escale.com>
Cc:	timur@...i.org, Xiubo.Lee@...il.com, lgirdwood@...il.com,
	broonie@...nel.org, perex@...ex.cz, tiwai@...e.de,
	alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel][PATCH 2/3] ASoC: fsl_sai: Add support for tdm slots
 operation

On Tue, Jan 20, 2015 at 08:21:19PM +0800, Zidan Wang wrote:
> @@ -369,10 +380,25 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream,
>  	u32 word_width = snd_pcm_format_width(params_format(params));
>  	u32 val_cr4 = 0, val_cr5 = 0;
>  	int ret;
> +	u32 bclk;
> +
> +	if (channels == 1)
> +		channels = 2;
> +
> +	if (!sai->slots || sai->slots % channels)
> +		sai->slots = channels;
> +
> +	sai->slots = sai->slots / channels;
> +
> +	if (sai->slot_width < word_width || sai->is_dsp_mode)
> +		sai->slot_width = word_width;

Could you pls explain a bit what's this overriding for?
Or it might be better to put into a comment.

Nicolin
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