linux-kernel - Re: [PATCH v2 4/7] ASoC: mediatek: common: soundcard driver add dai

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Message-ID: <70fdc45e5b8b07f9b892a299eb0ba6e5255aa1d7.camel@mediatek.com>
Date:   Thu, 25 May 2023 03:07:51 +0000
From:   Trevor Wu (吳文良) <Trevor.Wu@...iatek.com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "amergnat@...libre.com" <amergnat@...libre.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 4/7] ASoC: mediatek: common: soundcard driver add
 dai_fmt support

On Wed, 2023-05-24 at 16:12 +0200, Alexandre Mergnat wrote:
> On 23/05/2023 04:19, Trevor Wu wrote:
> > There are two changes included in the patch.
> > 
> > First, add set_dailink_daifmt() function, so dai_fmt can be updated
> > by
> > the configuration in dai-link sub node.
> > 
> > Second, remove codec phandle from required property in dai-link sub
> > node.
> > For example, user possibly needs to update dai-format for all etdm
> > co-clock dai-links, but codec doesn't need to be specified in
> > capture
> > dai-link for a speaker amp.
> > 
> > Signed-off-by: Trevor Wu <trevor.wu@...iatek.com>
> > ---
> >   .../mediatek/common/mtk-soundcard-driver.c    | 49
> > ++++++++++++++++++-
> >   1 file changed, 48 insertions(+), 1 deletion(-)
> > 
> > diff --git a/sound/soc/mediatek/common/mtk-soundcard-driver.c
> > b/sound/soc/mediatek/common/mtk-soundcard-driver.c
> > index 738093451ccb..5e291092046b 100644
> > --- a/sound/soc/mediatek/common/mtk-soundcard-driver.c
> > +++ b/sound/soc/mediatek/common/mtk-soundcard-driver.c
> > @@ -22,7 +22,7 @@ static int set_card_codec_info(struct
> > snd_soc_card *card,
> > 
> >       codec_node = of_get_child_by_name(sub_node, "codec");
> >       if (!codec_node)
> > -             return -EINVAL;
> 
> IMO, the debug or info print should be welcome here because the
> behavior
> change: dai link info parse will not stop if the codec node is NULL.
> That could help to understand what is happening during init.
> 
> 
> 
> Reviewed-by: Alexandre Mergnat <amergnat@...libre.com>
> 

Thanks for your suggestion. I will add a debug message here.

Thanks,
Trevor