qrb4210-rb2: add wsa/wcd audio playback support

[PATCH v1 10/10] ASoC: qcom: sm8250: force single channel via RX_1 output

Posted by Alexey Klimov 3 weeks, 2 days ago

In case of mono configurations we need to enforce single channel
output. This is required for audio playback on QRB4210 RB2 board.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
---
 sound/soc/qcom/sm8250.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
index 45e0c33fc3f3..7994488d7998 100644
--- a/sound/soc/qcom/sm8250.c
+++ b/sound/soc/qcom/sm8250.c
@@ -39,10 +39,20 @@ static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 					SNDRV_PCM_HW_PARAM_RATE);
 	struct snd_interval *channels = hw_param_interval(params,
 					SNDRV_PCM_HW_PARAM_CHANNELS);
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 
 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;
 
+	/* Maybe should be moved to driver data variant */
+	switch (cpu_dai->id) {
+	case RX_CODEC_DMA_RX_1:
+		channels->min = channels->max = 1;
+		break;
+	default:
+		break;
+	}
+
 	return 0;
 }
 
-- 
2.45.2

Re: [PATCH v1 10/10] ASoC: qcom: sm8250: force single channel via RX_1 output

Posted by Konrad Dybcio 2 weeks, 6 days ago

On 1.11.2024 6:31 AM, Alexey Klimov wrote:
> In case of mono configurations we need to enforce single channel
> output. This is required for audio playback on QRB4210 RB2 board.
> 
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
> ---
>  sound/soc/qcom/sm8250.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
> index 45e0c33fc3f3..7994488d7998 100644
> --- a/sound/soc/qcom/sm8250.c
> +++ b/sound/soc/qcom/sm8250.c
> @@ -39,10 +39,20 @@ static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
>  					SNDRV_PCM_HW_PARAM_RATE);
>  	struct snd_interval *channels = hw_param_interval(params,
>  					SNDRV_PCM_HW_PARAM_CHANNELS);
> +	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
>  
>  	rate->min = rate->max = 48000;
>  	channels->min = channels->max = 2;
>  
> +	/* Maybe should be moved to driver data variant */
> +	switch (cpu_dai->id) {
> +	case RX_CODEC_DMA_RX_1:
> +		channels->min = channels->max = 1;
> +		break;

This doesn't seem to be specific to either 8250 or 6115. It looks like
this is board specific.

Konrad