linux-kernel - [PATCH v1 10/10] ASoC: qcom: sm8250: force single channel via RX

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Message-ID: <20241101053154.497550-11-alexey.klimov@linaro.org>
Date: Fri,  1 Nov 2024 05:31:54 +0000
From: Alexey Klimov <alexey.klimov@...aro.org>
To: broonie@...nel.org,
	konradybcio@...nel.org,
	konrad.dybcio@....qualcomm.com,
	andersson@...nel.org,
	srinivas.kandagatla@...aro.org
Cc: tiwai@...e.com,
	lgirdwood@...il.com,
	perex@...ex.cz,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	dmitry.baryshkov@...aro.org,
	linux-sound@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 10/10] ASoC: qcom: sm8250: force single channel via RX_1 output

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@...aro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.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