linux-kernel - Re: [PATCH 2/2] ASoC: atmel: atmel_ssc_dai: Drop S24_LE support due to single channel limitation

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Message-ID: <20240916113203.17871-1-andrei.simion@microchip.com>
Date: Mon, 16 Sep 2024 14:32:05 +0300
From: Andrei Simion <andrei.simion@...rochip.com>
To: <alexandre.belloni@...tlin.com>
CC: <alsa-devel@...a-project.org>, <andrei.simion@...rochip.com>,
	<broonie@...nel.org>, <claudiu.beznea@...on.dev>,
	<codrin.ciubotariu@...rochip.com>, <lgirdwood@...il.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<linux-sound@...r.kernel.org>, <nicolas.ferre@...rochip.com>,
	<perex@...ex.cz>, <tiwai@...e.com>
Subject: Re: [PATCH 2/2] ASoC: atmel: atmel_ssc_dai: Drop S24_LE support due to single channel limitation

On 16.09.2024 12:59, Alexandre Belloni wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On 16/09/2024 11:52:15+0300, Andrei Simion wrote:
>> From: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
>>
>> Drop S24_LE format because it is not supported if more than 2 channels
>> (of TDM slots) are used. This limitation makes it impractical for use cases
>> requiring more than 2 TDM slots, leading to potential issues in
>> multi-channel configurations.
>>
>> [andrei.simion@...rochip.com: Reword the commit title and the commit
>> message.]
>>
>> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
>> Signed-off-by: Andrei Simion <andrei.simion@...rochip.com>
>> ---
>>  sound/soc/atmel/atmel_ssc_dai.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
>> index 7047f17fe7a8..475e7579c64c 100644
>> --- a/sound/soc/atmel/atmel_ssc_dai.c
>> +++ b/sound/soc/atmel/atmel_ssc_dai.c
>> @@ -822,7 +822,7 @@ static int atmel_ssc_resume(struct snd_soc_component *component)
>>  }
>>
>>  #define ATMEL_SSC_FORMATS (SNDRV_PCM_FMTBIT_S8     | SNDRV_PCM_FMTBIT_S16_LE |\
>> -                       SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
>> +                        SNDRV_PCM_FMTBIT_S32_LE)
>
> I believe this requires a comment. Else someone may add it back later
> on.
>

It is unclear to me. Would it be good to send v2 with this update?

>>
>>  static const struct snd_soc_dai_ops atmel_ssc_dai_ops = {
>>       .startup        = atmel_ssc_startup,
>> --
>> 2.34.1
>>
>
> --
> Alexandre Belloni, co-owner and COO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com

Best regards,
Andrei Simion