[PATCH 2/2] ASoC: Add support for HifiBerry DAC

[Mark Brown]

On Fri, May 13, 2016 at 09:14:13AM +0000, kernel at martin.sperl.org wrote:

> +static int snd_rpi_hifiberry_dac_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +	return 0;
> +}

Remove empty functions.  Either they are redundant or you really need to
do something in them.

> +static struct snd_soc_dai_link snd_rpi_hifiberry_dac_dai[] = {
> +{
> +	.name		= "HifiBerry DAC",
> +	.stream_name	= "HifiBerry DAC HiFi",
> +	.cpu_dai_name	= "bcm2708-i2s.0",
> +	.codec_dai_name	= "pcm5102a-hifi",
> +	.platform_name	= "bcm2708-i2s.0",
> +	.codec_name	= "pcm5102a-codec",

I would expect all this to be done with DT references in a DT driver
rather than hard coding static names - look at how simple-card does this.
You could almost use simple-card here but the BCLK ratio requirement is
probably a bit much, I'm not immediately seeing a nice way to specify
the ratio there since it depends on the sample width.
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