On Fri, Oct 29, 2021 at 05:13:05PM +0100, Richard Fitzgerald wrote:
> +static int cs42l42_slow_start_put(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> + u8 val;
> +
> + /* all bits of SLOW_START_EN much change together */
> + switch (ucontrol->value.integer.value[0]) {
> + case 0:
> + val = 0;
> + break;
> + case 1:
> + val = CS42L42_SLOW_START_EN_MASK;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + snd_soc_component_update_bits(component, CS42L42_SLOW_START_ENABLE,
> + CS42L42_SLOW_START_EN_MASK, val);
> +
> + return 0;
This should return 1 if the value changed.
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