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

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Message-ID: <cb2e035d-2630-2eca-3f15-b04e4d81c699@baylibre.com>
Date:   Wed, 24 May 2023 16:12:37 +0200
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Trevor Wu <trevor.wu@...iatek.com>, broonie@...nel.org,
        lgirdwood@...il.com, tiwai@...e.com, perex@...ex.cz,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com
Cc:     alsa-devel@...a-project.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 4/7] ASoC: mediatek: common: soundcard driver add
 dai_fmt support

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>

-- 
Regards,
Alexandre