[PATCH v1 0/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[PATCH v1 0/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[Mohammad Rafi Shaik]

In the existing implementation, the link->ops assignment is
conditioned on link->no_pcm being set, which generally happens
when a platform entry is present. However, in scenarios where
there is no platform but multiple codecs in the DAI link,
backend operations (link->ops) must still be assigned to ensure
correct codec settings.

Mohammad Rafi Shaik (1):
  ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

 sound/soc/qcom/sc8280xp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


base-commit: 176e917e010cb7dcc605f11d2bc33f304292482b
-- 
2.34.1

[PATCH v1 1/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[Mohammad Rafi Shaik]

In the existing implementation, the link->ops assignment is
conditioned on link->no_pcm being set, which generally happens
when a platform entry is present. However, in scenarios where
there is no platform but multiple codecs in the DAI link,
backend operations (link->ops) must still be assigned to ensure
correct codec settings.

Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@oss.qualcomm.com>
---
 sound/soc/qcom/sc8280xp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/qcom/sc8280xp.c b/sound/soc/qcom/sc8280xp.c
index 99fd34728e38..b1b31d197b42 100644
--- a/sound/soc/qcom/sc8280xp.c
+++ b/sound/soc/qcom/sc8280xp.c
@@ -147,7 +147,7 @@ static void sc8280xp_add_be_ops(struct snd_soc_card *card)
 	int i;
 
 	for_each_card_prelinks(card, i, link) {
-		if (link->no_pcm == 1) {
+		if (link->no_pcm == 1 || link->num_codecs > 1) {
 			link->init = sc8280xp_snd_init;
 			link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
 			link->ops = &sc8280xp_be_ops;
-- 
2.34.1

Re: [PATCH v1 1/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[Alexey Klimov]

On Wed May 28, 2025 at 4:07 PM BST, Mohammad Rafi Shaik wrote:
> In the existing implementation, the link->ops assignment is
> conditioned on link->no_pcm being set, which generally happens
> when a platform entry is present. However, in scenarios where
> there is no platform but multiple codecs in the DAI link,
> backend operations (link->ops) must still be assigned to ensure
> correct codec settings.
>
> Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@oss.qualcomm.com>
> ---
>  sound/soc/qcom/sc8280xp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/qcom/sc8280xp.c b/sound/soc/qcom/sc8280xp.c
> index 99fd34728e38..b1b31d197b42 100644
> --- a/sound/soc/qcom/sc8280xp.c
> +++ b/sound/soc/qcom/sc8280xp.c
> @@ -147,7 +147,7 @@ static void sc8280xp_add_be_ops(struct snd_soc_card *card)
>  	int i;
>  
>  	for_each_card_prelinks(card, i, link) {
> -		if (link->no_pcm == 1) {
> +		if (link->no_pcm == 1 || link->num_codecs > 1) {

Out of curiosity or maybe I am missing something, why this is needed
for a multi-codec link only? Or in other words why not link->num_codecs > 0 ?

Or due to some reasons platformless single-codec backend is a no-go scenario?

Thanks,
Alexey

Re: [PATCH v1 1/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[Dmitry Baryshkov]

On Wed, May 28, 2025 at 08:37:16PM +0530, Mohammad Rafi Shaik wrote:
> In the existing implementation, the link->ops assignment is
> conditioned on link->no_pcm being set, which generally happens
> when a platform entry is present. However, in scenarios where
> there is no platform but multiple codecs in the DAI link,
> backend operations (link->ops) must still be assigned to ensure
> correct codec settings.

Could you please provide an example of such scenarios?

> 
> Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@oss.qualcomm.com>
> ---
>  sound/soc/qcom/sc8280xp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

-- 
With best wishes
Dmitry

Re: [PATCH v1 0/1] ASoC: qcom: sc8280xp: Assign backend ops for multi codec dai links

[Mark Brown]

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On Wed, May 28, 2025 at 08:37:15PM +0530, Mohammad Rafi Shaik wrote:
> In the existing implementation, the link->ops assignment is
> conditioned on link->no_pcm being set, which generally happens
> when a platform entry is present. However, in scenarios where
> there is no platform but multiple codecs in the DAI link,
> backend operations (link->ops) must still be assigned to ensure
> correct codec settings.

Please don't send cover letters for single patches, if there is anything
that needs saying put it in the changelog of the patch or after the ---
if it's administrative stuff.  This reduces mail volume and ensures that 
any important information is recorded in the changelog rather than being
lost. 

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