[alsa-devel] [PATCH v3 3/3] ALSA SoC: Add Texas Instruments TLV320AIC26 codec driver

[Mark Brown]

On Tue, Jul 22, 2008 at 12:54:03AM -0600, Grant Likely wrote:

> Signed-off-by: Grant Likely <grant.likely at secretlab.ca>

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>

with the same comments about outstanding issues as applied to the CPU
side.

> +static int aic26_hw_params(struct snd_pcm_substream *substream,
> +			   struct snd_pcm_hw_params *params)
> +{

> +	switch (params_rate(params)) {
> +	case 8000:  fsref = 48000; divisor = AIC26_DIV_6; break;

> +	/* Configure PLL */
> +	pval = 1;
> +	jval = (fsref == 44100) ? 7 : 8;
> +	dval = (fsref == 44100) ? 5264 : 1920;

Without having looked at the chip datasheet these parameters probably
all need to depend on the input clock rate and the PLL configuration
should be done in a set_pll() rather than here.

> +#if defined(CONFIG_SND_SOC_OF_SIMPLE)
> +	/* Tell the of_soc helper about this codec */
> +	of_snd_soc_register_codec(&aic26_soc_codec_dev, aic26, &aic26_dai,
> +				  spi->dev.archdata.of_node);
> +#endif

This won't work if the OF_SIMPLE stuff is a module.  There's also a
checkpatch issue which I'll fix up.