[alsa-devel] [PATCH 1/3] ASoC: max98090: read micbias from device property

[Yang Fang]

On Tue, May 26, 2015 at 09:39:54PM -0700, Dylan Reid wrote:
> On Tue, May 26, 2015 at 4:58 PM,  <yang.a.fang at intel.com> wrote:
> > From: "Fang, Yang A" <yang.a.fang at intel.com>
> >
> > This patch reads max98090 micbias from acpi or dt
> >
> > Signed-off-by: Fang, Yang A <yang.a.fang at intel.com>
> > ---
> >  sound/soc/codecs/max98090.c |    9 ++++++++-
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
> > index c230626..27df17e 100644
> > --- a/sound/soc/codecs/max98090.c
> > +++ b/sound/soc/codecs/max98090.c
> > @@ -2419,6 +2419,8 @@ static int max98090_probe(struct snd_soc_codec *codec)
> >         struct max98090_cdata *cdata;
> >         enum max98090_type devtype;
> >         int ret = 0;
> > +       int err;
> > +       unsigned int micbias;
> >
> >         dev_dbg(codec->dev, "max98090_probe\n");
> >
> > @@ -2503,8 +2505,13 @@ static int max98090_probe(struct snd_soc_codec *codec)
> >         snd_soc_write(codec, M98090_REG_BIAS_CONTROL,
> >                 M98090_VCM_MODE_MASK);
> >
> > +       err = device_property_read_u32(codec->dev, "max,micbias", &micbias);
> 
> Should this be "maxim,micbias" to be consistent with  "maxim,dmic-freq"?
> It should also be added to the Documentation for the max98090, as an
> optional parameter.
Agreed . i will change it in v2 and update the Documentation
> 
> > +
> 
> Extra newline.
will fix in v2
> 
> > +       if (err)
> > +               micbias = M98090_MBVSEL_2V8;
> > +
> >         snd_soc_update_bits(codec, M98090_REG_MIC_BIAS_VOLTAGE,
> > -               M98090_MBVSEL_MASK, M98090_MBVSEL_2V8);
> > +               M98090_MBVSEL_MASK, micbias);
> >
> >         max98090_add_widgets(codec);
> >
> > --
> > 1.7.9.5
> >