Re: [PATCH 4/7] ASoC: codecs: wcd938x: add basic controls

[Srinivas Kandagatla]

Thanks Mark for review,

On 12/03/2021 15:55, Mark Brown wrote:
> On Thu, Mar 11, 2021 at 05:34:13PM +0000, Srinivas Kandagatla wrote:
>
> > +	if (wcd938x->variant == WCD9380) {
>
> switch statements please.
>
> > +		if (mode_val == CLS_H_HIFI || mode_val == CLS_AB_HIFI) {
> > +			dev_info(component->dev,
> > +				"%s:Invalid HPH Mode, default to CLS_H_ULP\n",
> > +				__func__);
> > +			mode_val = CLS_H_ULP;
> > +		}
>
> If the value can't be set an error should be returned rather than the
> input ignored.

I agree with all the comments related to switch statements and ignoring 
return values, will address them in next version.

> > +static int wcd938x_ear_pa_gain_get(struct snd_kcontrol *kcontrol,
> > +				   struct snd_ctl_elem_value *ucontrol)
> > +{
> > +	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> > +
> > +	ucontrol->value.integer.value[0] = snd_soc_component_read_field(component,
> > +						WCD938X_ANA_EAR_COMPANDER_CTL,
> > +						WCD938X_EAR_GAIN_MASK);
> > +
> > +	return 0;
> > +}
>
> This just looks like a normal operation?
Yes, this can probably go into a TLV control, will fix this in next version.


--srini
> > +static int wcd938x_ear_pa_gain_put(struct snd_kcontrol *kcontrol,
> > +				   struct snd_ctl_elem_value *ucontrol)
> > +{
> > +	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> > +	struct wcd938x_sdw_priv *wcd = snd_soc_component_get_drvdata(component);
> > +	struct wcd938x_priv *wcd938x = wcd->wcd938x;
> > +
> > +	if (!wcd938x->comp1_enable) {
> > +		snd_soc_component_write_field(component,
> > +				WCD938X_ANA_EAR_COMPANDER_CTL,
> > +				WCD938X_EAR_GAIN_MASK,
> > +				ucontrol->value.integer.value[0]);
> > +	}
>
> Again, values should not be ignored on error.
>
> > +	if (wcd938x->variant == WCD9380) {
> > +		ret = snd_soc_add_component_controls(component, wcd9380_snd_controls,
> > +					ARRAY_SIZE(wcd9380_snd_controls));
> > +		if (ret < 0) {
> > +			dev_err(component->dev,
> > +				"%s: Failed to add snd ctrls for variant: %d\n",
> > +				__func__, wcd938x->variant);
> > +			goto err;
> > +		}
> > +	}
> > +	if (wcd938x->variant == WCD9385) {
>
> Again, switch statements - I'll never understand why people seem so
> intent on writing if trees :(