[alsa-devel] [PATCH] ASoC: wm8524: Add support S32_LE

[S.j. Wang]

Hi

> On Fri, Nov 01, 2019 at 06:34:54AM +0000, S.j. Wang wrote:
> > Allow 32bit sample with this codec.
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
> > ---
> >  sound/soc/codecs/wm8524.c | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/sound/soc/codecs/wm8524.c b/sound/soc/codecs/wm8524.c
> > index 91e3d1570c45..4e9ab542f648 100644
> > --- a/sound/soc/codecs/wm8524.c
> > +++ b/sound/soc/codecs/wm8524.c
> > @@ -159,7 +159,9 @@ static int wm8524_mute_stream(struct
> snd_soc_dai
> > *dai, int mute, int stream)
> >
> >  #define WM8524_RATES SNDRV_PCM_RATE_8000_192000
> >
> > -#define WM8524_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |
> > SNDRV_PCM_FMTBIT_S24_LE)
> > +#define WM8524_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
> > +                     SNDRV_PCM_FMTBIT_S24_LE |\
> > +                     SNDRV_PCM_FMTBIT_S32_LE)
> >
> 
> The device doesn't actually support 32bit though, I guess it will ignore the
> extra LSBs so it should work. But is that really supporting 32 bit?
> 
I also think it may ignore the extra LSBs just as you said, but don't really
Support 32bit.  This change is to make driver accept S32_LE format.

Best regards
Wang shengjiu