linux-kernel - Re: [PATCH 2/2] ASoC: imx-card: Add playback_only or capture

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Message-ID: <Z6zCjXr6vsVF/6Ag@lizhi-Precision-Tower-5810>
Date: Wed, 12 Feb 2025 10:47:25 -0500
From: Frank Li <Frank.li@....com>
To: Shengjiu Wang <shengjiu.wang@...il.com>
Cc: Shengjiu Wang <shengjiu.wang@....com>, Xiubo.Lee@...il.com,
	festevam@...il.com, nicoleotsuka@...il.com, lgirdwood@...il.com,
	broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	linux-sound@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/2] ASoC: imx-card: Add playback_only or capture_only
 support

On Wed, Feb 12, 2025 at 11:48:43AM +0800, Shengjiu Wang wrote:
> On Tue, Feb 11, 2025 at 11:34 PM Frank Li <Frank.li@....com> wrote:
> >
> > On Tue, Feb 11, 2025 at 11:57:37AM +0800, Shengjiu Wang wrote:
> > > With the DPCM case, the backend only support capture or
> > > playback, then the linked frontend can only support
> > > capture or playback, but frontend can't automatically
> > > enable only capture or playback, it needs the input
> > > from dt-binding.
> >
> > wrap at 75 chars
>
> On my side, there are in 75 chars...
>
> >
> > >
> > > Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> > > ---
> > >  sound/soc/fsl/imx-card.c | 5 +++++
> > >  1 file changed, 5 insertions(+)
> > >
> > > diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
> > > index ac043ad367ac..905294682996 100644
> > > --- a/sound/soc/fsl/imx-card.c
> > > +++ b/sound/soc/fsl/imx-card.c
> > > @@ -518,6 +518,7 @@ static int imx_card_parse_of(struct imx_card_data *data)
> > >       struct snd_soc_dai_link *link;
> > >       struct dai_link_data *link_data;
> > >       struct of_phandle_args args;
> > > +     bool playback_only, capture_only;
> > >       int ret, num_links;
> > >       u32 asrc_fmt = 0;
> > >       u32 width;
> > > @@ -679,6 +680,10 @@ static int imx_card_parse_of(struct imx_card_data *data)
> > >                       link->ops = &imx_aif_ops;
> > >               }
> > >
> > > +             graph_util_parse_link_direction(np, &playback_only, &capture_only);
> > > +             link->playback_only = playback_only;
> > > +             link->capture_only = capture_only;
> > > +
> >
> > if only use once, needn't local variable.
> >
> > graph_util_parse_link_direction(np, &link->playback_only, &link->capture_only)
>
> sound/soc/fsl/imx-card.c:683:53: error: cannot take address of
> bit-field ‘playback_only’
>   683 |                 graph_util_parse_link_direction(np,
> &link->playback_only, &link->capture_only);
>       |                                                     ^
> sound/soc/fsl/imx-card.c:683:75: error: cannot take address of
> bit-field ‘capture_only’
>   683 |                 graph_util_parse_link_direction(np,
> &link->playback_only, &link->capture_only);
>
> There are errors with it.

Okay, it should be fine.

Frank

>
> best regards
> Shengjiu Wang
> >
> > Frank
> >
> > >               /* Get dai fmt */
> > >               ret = simple_util_parse_daifmt(dev, np, codec,
> > >                                              NULL, &link->dai_fmt);
> > > --
> > > 2.34.1
> > >