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[PATCH 3/5] ASoC: mediatek: common: soundcard driver add dai_fmt support

Trevor Wu posted 5 patches 2 years, 8 months ago
There is a newer version of this series
[PATCH 3/5] ASoC: mediatek: common: soundcard driver add dai_fmt support
Posted by Trevor Wu 2 years, 8 months ago 
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@mediatek.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;
+		return 0;
 
 	/* set card codec info */
 	ret = snd_soc_of_get_dai_link_codecs(dev, codec_node, dai_link);
@@ -36,6 +36,47 @@ static int set_card_codec_info(struct snd_soc_card *card,
 	return 0;
 }
 
+static int set_dailink_daifmt(struct snd_soc_card *card,
+			      struct device_node *sub_node,
+			      struct snd_soc_dai_link *dai_link)
+{
+	unsigned int daifmt;
+	const char *str;
+	int ret;
+	struct {
+		char *name;
+		unsigned int val;
+	} of_clk_table[] = {
+		{ "cpu",	SND_SOC_DAIFMT_CBC_CFC },
+		{ "codec",	SND_SOC_DAIFMT_CBP_CFP },
+	};
+
+	daifmt = snd_soc_daifmt_parse_format(sub_node, NULL);
+	if (daifmt) {
+		dai_link->dai_fmt &= SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+		dai_link->dai_fmt |= daifmt;
+	}
+
+	/*
+	 * check "mediatek,clk-provider = xxx"
+	 * SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area
+	 */
+	ret = of_property_read_string(sub_node, "mediatek,clk-provider", &str);
+	if (ret == 0) {
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(of_clk_table); i++) {
+			if (strcmp(str, of_clk_table[i].name) == 0) {
+				dai_link->dai_fmt &= ~SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+				dai_link->dai_fmt |= of_clk_table[i].val;
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
 int parse_dai_link_info(struct snd_soc_card *card)
 {
 	struct device *dev = card->dev;
@@ -67,6 +108,12 @@ int parse_dai_link_info(struct snd_soc_card *card)
 			of_node_put(sub_node);
 			return ret;
 		}
+
+		ret = set_dailink_daifmt(card, sub_node, dai_link);
+		if (ret < 0) {
+			of_node_put(sub_node);
+			return ret;
+		}
 	}
 
 	return 0;
-- 
2.18.0
Re: [PATCH 3/5] ASoC: mediatek: common: soundcard driver add dai_fmt support
Posted by AngeloGioacchino Del Regno 2 years, 8 months ago 
Il 17/05/23 13:15, Trevor Wu ha scritto:
> 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@mediatek.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;
> +		return 0;
>   
>   	/* set card codec info */
>   	ret = snd_soc_of_get_dai_link_codecs(dev, codec_node, dai_link);
> @@ -36,6 +36,47 @@ static int set_card_codec_info(struct snd_soc_card *card,
>   	return 0;
>   }
>   
> +static int set_dailink_daifmt(struct snd_soc_card *card,
> +			      struct device_node *sub_node,
> +			      struct snd_soc_dai_link *dai_link)
> +{
> +	unsigned int daifmt;
> +	const char *str;
> +	int ret;
> +	struct {
> +		char *name;
> +		unsigned int val;
> +	} of_clk_table[] = {
> +		{ "cpu",	SND_SOC_DAIFMT_CBC_CFC },
> +		{ "codec",	SND_SOC_DAIFMT_CBP_CFP },
> +	};
> +

This is an optional property and this function should not do anything if that
property is not found, so....

	/*
	 * Check "mediatek,clk-provider" to select the clock provider
	 * in SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area, if specified.
	 */
	if (!of_property_read_string(sub_node, "mediatek,clk-provider", &str))
		return 0;

...this allows you to reduce indentation as well.

> +	daifmt = snd_soc_daifmt_parse_format(sub_node, NULL);
> +	if (daifmt) {
> +		dai_link->dai_fmt &= SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
> +		dai_link->dai_fmt |= daifmt;
> +	}
> +
> +	/*
> +	 * check "mediatek,clk-provider = xxx"
> +	 * SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area
> +	 */
> +	ret = of_property_read_string(sub_node, "mediatek,clk-provider", &str);
> +	if (ret == 0) {
> +		int i;
> +
> +		for (i = 0; i < ARRAY_SIZE(of_clk_table); i++) {
> +			if (strcmp(str, of_clk_table[i].name) == 0) {
> +				dai_link->dai_fmt &= ~SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
> +				dai_link->dai_fmt |= of_clk_table[i].val;
> +				break;
> +			}
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>   int parse_dai_link_info(struct snd_soc_card *card)
>   {
>   	struct device *dev = card->dev;
> @@ -67,6 +108,12 @@ int parse_dai_link_info(struct snd_soc_card *card)
>   			of_node_put(sub_node);
>   			return ret;
>   		}
> +
> +		ret = set_dailink_daifmt(card, sub_node, dai_link);
> +		if (ret < 0) {

if (ret) {
  ...
}

> +			of_node_put(sub_node);
> +			return ret;
> +		}

Regards,
Angelo
Re: [PATCH 3/5] ASoC: mediatek: common: soundcard driver add dai_fmt support
Posted by Trevor Wu (吳文良) 2 years, 8 months ago 
On Wed, 2023-05-17 at 13:48 +0200, AngeloGioacchino Del Regno wrote:
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> 
> 
> Il 17/05/23 13:15, Trevor Wu ha scritto:
> > 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@mediatek.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;
> > +             return 0;
> > 
> >       /* set card codec info */
> >       ret = snd_soc_of_get_dai_link_codecs(dev, codec_node,
> > dai_link);
> > @@ -36,6 +36,47 @@ static int set_card_codec_info(struct
> > snd_soc_card *card,
> >       return 0;
> >   }
> > 
> > +static int set_dailink_daifmt(struct snd_soc_card *card,
> > +                           struct device_node *sub_node,
> > +                           struct snd_soc_dai_link *dai_link)
> > +{
> > +     unsigned int daifmt;
> > +     const char *str;
> > +     int ret;
> > +     struct {
> > +             char *name;
> > +             unsigned int val;
> > +     } of_clk_table[] = {
> > +             { "cpu",        SND_SOC_DAIFMT_CBC_CFC },
> > +             { "codec",      SND_SOC_DAIFMT_CBP_CFP },
> > +     };
> > +
> 
> This is an optional property and this function should not do anything
> if that
> property is not found, so....
> 
>         /*
>          * Check "mediatek,clk-provider" to select the clock provider
>          * in SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area, if specified.
>          */
>         if (!of_property_read_string(sub_node, "mediatek,clk-
> provider", &str))
>                 return 0;
> 
> ...this allows you to reduce indentation as well.

Hi Angelo,

Actually, there are two properties handled by the function.
"dai-format" is parsed at snd_soc_daifmt_parse_format(), and
"mediatek,clk-provider" is parsed by of_property_read_string().
I have to go through both properties in the function, so it can't
return directly if "mediatek,clk-provider" is not found.

> 
> > +     daifmt = snd_soc_daifmt_parse_format(sub_node, NULL);
> > +     if (daifmt) {
> > +             dai_link->dai_fmt &=
> > SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
> > +             dai_link->dai_fmt |= daifmt;
> > +     }
> > +
> > +     /*
> > +      * check "mediatek,clk-provider = xxx"
> > +      * SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area
> > +      */
> > +     ret = of_property_read_string(sub_node, "mediatek,clk-
> > provider", &str);
> > +     if (ret == 0) {
> > +             int i;
> > +
> > +             for (i = 0; i < ARRAY_SIZE(of_clk_table); i++) {
> > +                     if (strcmp(str, of_clk_table[i].name) == 0) {
> > +                             dai_link->dai_fmt &=
> > ~SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
> > +                             dai_link->dai_fmt |=
> > of_clk_table[i].val;
> > +                             break;
> > +                     }
> > +             }
> > +     }
> > +
> > +     return 0;
> > +}
> > +
> >   int parse_dai_link_info(struct snd_soc_card *card)
> >   {
> >       struct device *dev = card->dev;
> > @@ -67,6 +108,12 @@ int parse_dai_link_info(struct snd_soc_card
> > *card)
> >                       of_node_put(sub_node);
> >                       return ret;
> >               }
> > +
> > +             ret = set_dailink_daifmt(card, sub_node, dai_link);
> > +             if (ret < 0) {
> 
> if (ret) {
>   ...
> }
> 

Currently, this function only returns 0, but I'm not sure if it will
return a positive value for some other usage in the future.
Because a negative value is always returned for an error and the
preceding rule is also "ret < 0", I prefer "ret < 0" here. 

Thanks,
Trevor

> > +                     of_node_put(sub_node);
> > +                     return ret;
> > +             }
> 
> Regards,
> Angelo
>

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