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

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Message-ID: <CAA+D8AMyXVdAWOTGHtrOyXjSLiMioAhZ1awepX3nproom87azQ@mail.gmail.com>
Date: Wed, 12 Feb 2025 11:48:43 +0800
From: Shengjiu Wang <shengjiu.wang@...il.com>
To: Frank Li <Frank.li@....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 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.

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