[PATCH v8 1/2] ASoC: sunxi: Add Allwinner H6 Digital MIC driver

[班涛]

Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com> 于2022年8月12日周五
23:20写道：

> On 8/11/2022 4:49 PM, Ban Tao wrote:
> > The Allwinner H6 and later SoCs have an DMIC block
> > which is capable of capture.
> >
> > Signed-off-by: Ban Tao <fengzheng923 at gmail.com>
> > ---
>
> ...
>
> > +
> > +#define SUN50I_DMIC_RATES (SNDRV_PCM_RATE_8000_48000)
>
> Seeing supported rates in hw_params callback, you probably want to take
> a look at SNDRV_PCM_RATE_KNOT?
>

No, I don't need SNDRV_PCM_RATE_KNOT. Dmic does not support unknown rates.


>
> > +#define SUN50I_DMIC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |
> SNDRV_PCM_FMTBIT_S24_LE)
> > +
> > +static struct snd_soc_dai_driver sun50i_dmic_dai = {
> > +     .capture = {
> > +             .channels_min = 1,
> > +             .channels_max = 8,
> > +             .rates = SUN50I_DMIC_RATES,
> > +             .formats = SUN50I_DMIC_FORMATS,
> > +             .sig_bits = 21,
> > +     },
> > +     .probe = sun50i_dmic_soc_dai_probe,
> > +     .ops = &sun50i_dmic_dai_ops,
> > +     .name = "dmic",
> > +};
> > +
>
> ...
>
>