[alsa-devel] [PATCH 8/8] ASoC: AD183x: add support for more multiple parts

[Mark Brown]

On Tue, Jun 14, 2011 at 05:34:28PM -0400, Mike Frysinger wrote:

This is OK but some nits/future improvements:

> +static const struct snd_kcontrol_new ad1835a_ad1837a_snd_controls[] = {
> +	/* DAC volume control */
> +	SOC_DOUBLE_R("DAC1 Volume", AD183X_DAC_L1_VOL,
> +			AD183X_DAC_R1_VOL, 0, 0x3FF, 0),

It would be much better to provide dB information but OK.

> +	/* DAC de-emphasis */
> +	SOC_ENUM("Playback Deemphasis", ad183x_deemp_enum),

OK for now but what modern drivers are doing here is making the
deemphasis switch a switch at the application layer then automatically
selecting the sample rate to use for the filter based on the active
sample rate.

> @@ -45,17 +125,17 @@ static const struct snd_kcontrol_new ad183x_snd_controls[] = {
>  
>  	/* ADC switch control */
>  	SOC_DOUBLE("ADC1 Switch", AD183X_ADC_CTRL2, AD183X_ADCL1_MUTE,
> -		AD183X_ADCR1_MUTE, 1, 1),
> +			AD183X_ADCR1_MUTE, 1, 1),

Indentation changes should really be in a separate patch if you end up
needing to respin the series.

> +	if (!strcmp(chip_name, "ad1835a") || !strcmp(chip_name, "ad1837a"))
> +		ad183x->chl_ctrl = &ad1835a_ad1837a_chl_ctrls;
> +	else if (!strcmp(chip_name, "ad1838a") || !strcmp(chip_name, "ad1839a"))
> +		ad183x->chl_ctrl = &ad1838a_ad1839a_chl_ctrls;
> +	else if (!strcmp(chip_name, "ad1836"))
> +		ad183x->chl_ctrl = &ad1836_chl_ctrls;
> +	else {
> +		dev_err(&spi->dev, "unsupported chip type: %s\n", chip_name);
> +		return -EINVAL;

Someone really ought to get around to fixing this in the SPI subsystem
:/