[alsa-devel] [PATCH 1/2] ASoC: improve the DMI long card code in asoc-core

[alsa-devel] [PATCH 1/2] ASoC: improve the DMI long card code in asoc-core

[Jaroslav Kysela]

Add append_dmi_string() function and make the code more readable.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: Mark Brown <broonie@kernel.org>
---
 sound/soc/soc-core.c | 66 +++++++++++++++++---------------------------
 1 file changed, 25 insertions(+), 41 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b4683d4588ee..1d1baf78818c 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1755,6 +1755,23 @@ static int is_dmi_valid(const char *field)
 	return 1;
 }
 
+/*
+ *
+ */
+static void append_dmi_string(struct snd_soc_card *card, const char *str)
+{
+	char *dst = card->dmi_longname;
+	size_t dst_len = sizeof(card->dmi_longname);
+	size_t len;
+
+	len = strlen(dst);
+	snprintf(dst + len, dst_len - len, "-%s", str);
+
+	len++;	/* skip the separator "-" */
+	if (len < dst_len)
+		cleanup_dmi_name(dst + len);
+}
+
 /**
  * snd_soc_set_dmi_name() - Register DMI names to card
  * @card: The card to register DMI names
@@ -1789,61 +1806,36 @@ static int is_dmi_valid(const char *field)
 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
 {
 	const char *vendor, *product, *product_version, *board;
-	size_t longname_buf_size = sizeof(card->snd_card->longname);
-	size_t len;
 
 	if (card->long_name)
 		return 0; /* long name already set by driver or from DMI */
 
-	/* make up dmi long name as: vendor.product.version.board */
+	/* make up dmi long name as: vendor-product-version-board */
 	vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
 	if (!vendor || !is_dmi_valid(vendor)) {
 		dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
 		return 0;
 	}
 
-	snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
-			 "%s", vendor);
+	snprintf(card->dmi_longname, sizeof(card->dmi_longname), "%s", vendor);
 	cleanup_dmi_name(card->dmi_longname);
 
 	product = dmi_get_system_info(DMI_PRODUCT_NAME);
 	if (product && is_dmi_valid(product)) {
-		len = strlen(card->dmi_longname);
-		snprintf(card->dmi_longname + len,
-			 longname_buf_size - len,
-			 "-%s", product);
-
-		len++;	/* skip the separator "-" */
-		if (len < longname_buf_size)
-			cleanup_dmi_name(card->dmi_longname + len);
+		append_dmi_string(card, product);
 
 		/*
 		 * some vendors like Lenovo may only put a self-explanatory
 		 * name in the product version field
 		 */
 		product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
-		if (product_version && is_dmi_valid(product_version)) {
-			len = strlen(card->dmi_longname);
-			snprintf(card->dmi_longname + len,
-				 longname_buf_size - len,
-				 "-%s", product_version);
-
-			len++;
-			if (len < longname_buf_size)
-				cleanup_dmi_name(card->dmi_longname + len);
-		}
+		if (product_version && is_dmi_valid(product_version))
+			append_dmi_string(card, product_version);
 	}
 
 	board = dmi_get_system_info(DMI_BOARD_NAME);
 	if (board && is_dmi_valid(board)) {
-		len = strlen(card->dmi_longname);
-		snprintf(card->dmi_longname + len,
-			 longname_buf_size - len,
-			 "-%s", board);
-
-		len++;
-		if (len < longname_buf_size)
-			cleanup_dmi_name(card->dmi_longname + len);
+		append_dmi_string(card, board);
 	} else if (!product) {
 		/* fall back to using legacy name */
 		dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
@@ -1851,16 +1843,8 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
 	}
 
 	/* Add flavour to dmi long name */
-	if (flavour) {
-		len = strlen(card->dmi_longname);
-		snprintf(card->dmi_longname + len,
-			 longname_buf_size - len,
-			 "-%s", flavour);
-
-		len++;
-		if (len < longname_buf_size)
-			cleanup_dmi_name(card->dmi_longname + len);
-	}
+	if (flavour)
+		append_dmi_string(card, flavour);
 
 	/* set the card long name */
 	card->long_name = card->dmi_longname;
-- 
2.20.1
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[alsa-devel] [PATCH 2/2] ASoC: DMI long name - avoid to add board name if matches with product name

[Jaroslav Kysela]

Current code:

  LENOVO-20QE000VMC-ThinkPadX1Carbon7th-20QE000VMC

With the patch:

  LENOVO-20QE000VMC-ThinkPadX1Carbon7th

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: Mark Brown <broonie@kernel.org>
---
 sound/soc/soc-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 1d1baf78818c..32c249ccc600 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1835,7 +1835,8 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
 
 	board = dmi_get_system_info(DMI_BOARD_NAME);
 	if (board && is_dmi_valid(board)) {
-		append_dmi_string(card, board);
+		if (!product || strcasecmp(board, product))
+			append_dmi_string(card, board);
 	} else if (!product) {
 		/* fall back to using legacy name */
 		dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
-- 
2.20.1
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Re: [alsa-devel] [PATCH 1/2] ASoC: improve the DMI long card code in asoc-core

[Pierre-Louis Bossart]

On 11/20/19 3:37 AM, Jaroslav Kysela wrote:
> Add append_dmi_string() function and make the code more readable.
> 
> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
> Cc: Mark Brown <broonie@kernel.org>
> ---
>   sound/soc/soc-core.c | 66 +++++++++++++++++---------------------------
>   1 file changed, 25 insertions(+), 41 deletions(-)
> 
> diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
> index b4683d4588ee..1d1baf78818c 100644
> --- a/sound/soc/soc-core.c
> +++ b/sound/soc/soc-core.c
> @@ -1755,6 +1755,23 @@ static int is_dmi_valid(const char *field)
>   	return 1;
>   }
>   
> +/*
> + *
> + */

unneeded comments or missing text?

> +static void append_dmi_string(struct snd_soc_card *card, const char *str)
> +{
> +	char *dst = card->dmi_longname;
> +	size_t dst_len = sizeof(card->dmi_longname);
> +	size_t len;
> +
> +	len = strlen(dst);
> +	snprintf(dst + len, dst_len - len, "-%s", str);
> +
> +	len++;	/* skip the separator "-" */
> +	if (len < dst_len)
> +		cleanup_dmi_name(dst + len);
> +}
> +
>   /**
>    * snd_soc_set_dmi_name() - Register DMI names to card
>    * @card: The card to register DMI names
> @@ -1789,61 +1806,36 @@ static int is_dmi_valid(const char *field)
>   int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
>   {
>   	const char *vendor, *product, *product_version, *board;
> -	size_t longname_buf_size = sizeof(card->snd_card->longname);
> -	size_t len;
>   
>   	if (card->long_name)
>   		return 0; /* long name already set by driver or from DMI */
>   
> -	/* make up dmi long name as: vendor.product.version.board */
> +	/* make up dmi long name as: vendor-product-version-board */

here you are just fixing a misleading comment, yes?
I don't see any dots to dashes substitution but better ask.
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Re: [alsa-devel] [PATCH 1/2] ASoC: improve the DMI long card code in asoc-core

[Jaroslav Kysela]

Dne 20. 11. 19 v 15:55 Pierre-Louis Bossart napsal(a):
> 
> 
> On 11/20/19 3:37 AM, Jaroslav Kysela wrote:
>> Add append_dmi_string() function and make the code more readable.
>>
>> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
>> Cc: Mark Brown <broonie@kernel.org>
>> ---
>>    sound/soc/soc-core.c | 66 +++++++++++++++++---------------------------
>>    1 file changed, 25 insertions(+), 41 deletions(-)
>>
>> diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
>> index b4683d4588ee..1d1baf78818c 100644
>> --- a/sound/soc/soc-core.c
>> +++ b/sound/soc/soc-core.c
>> @@ -1755,6 +1755,23 @@ static int is_dmi_valid(const char *field)
>>    	return 1;
>>    }
>>    
>> +/*
>> + *
>> + */
> 
> unneeded comments or missing text?

There should be a text, of course.

>> +static void append_dmi_string(struct snd_soc_card *card, const char *str)
>> +{
>> +	char *dst = card->dmi_longname;
>> +	size_t dst_len = sizeof(card->dmi_longname);
>> +	size_t len;
>> +
>> +	len = strlen(dst);
>> +	snprintf(dst + len, dst_len - len, "-%s", str);
>> +
>> +	len++;	/* skip the separator "-" */
>> +	if (len < dst_len)
>> +		cleanup_dmi_name(dst + len);
>> +}
>> +
>>    /**
>>     * snd_soc_set_dmi_name() - Register DMI names to card
>>     * @card: The card to register DMI names
>> @@ -1789,61 +1806,36 @@ static int is_dmi_valid(const char *field)
>>    int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
>>    {
>>    	const char *vendor, *product, *product_version, *board;
>> -	size_t longname_buf_size = sizeof(card->snd_card->longname);
>> -	size_t len;
>>    
>>    	if (card->long_name)
>>    		return 0; /* long name already set by driver or from DMI */
>>    
>> -	/* make up dmi long name as: vendor.product.version.board */
>> +	/* make up dmi long name as: vendor-product-version-board */
> 
> here you are just fixing a misleading comment, yes?
> I don't see any dots to dashes substitution but better ask.

The result is LENOVO-20QE000VMC-ThinkPadX1Carbon7th-20QE000VMC. I think that 
the dots were replaced by dashes as the field separators during the initial 
implementation or so. I just reflect the current state.

					Jaroslav

-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
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