ASoC: fsl: fsl_qmc_audio: Introduce qmc_dai_constraints_interleaved()

Constraints are set by qmc_dai_startup(). These constraints are specific
to the interleaved mode.

With the future introduction of support for non-interleaved mode, a new
set of constraints will be set. To make the code clear and keep
qmc_dai_startup() simple, extract the current interleaved mode
constraints settings to a specific function.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20240701113038.55144-7-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_qmc_audio.c

@@ -436,24 +436,14 @@ static int qmc_dai_hw_rule_capture_format_by_channels(struct snd_pcm_hw_params *
 	return qmc_dai_hw_rule_format_by_channels(qmc_dai, params, qmc_dai->nb_rx_ts);
 }
 
-static int qmc_dai_startup(struct snd_pcm_substream *substream,
-			   struct snd_soc_dai *dai)
+static int qmc_dai_constraints_interleaved(struct snd_pcm_substream *substream,
+					   struct qmc_dai *qmc_dai)
 {
-	struct qmc_dai_prtd *prtd = substream->runtime->private_data;
 	snd_pcm_hw_rule_func_t hw_rule_channels_by_format;
 	snd_pcm_hw_rule_func_t hw_rule_format_by_channels;
-	struct qmc_dai *qmc_dai;
 	unsigned int frame_bits;
 	int ret;
 
-	qmc_dai = qmc_dai_get_data(dai);
-	if (!qmc_dai) {
-		dev_err(dai->dev, "Invalid dai\n");
-		return -EINVAL;
-	}
-
-	prtd->qmc_dai = qmc_dai;
-
 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 		hw_rule_channels_by_format = qmc_dai_hw_rule_capture_channels_by_format;
 		hw_rule_format_by_channels = qmc_dai_hw_rule_capture_format_by_channels;
@@ -468,7 +458,7 @@ static int qmc_dai_startup(struct snd_pcm_substream *substream,
 				  hw_rule_channels_by_format, qmc_dai,
 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
 	if (ret) {
-		dev_err(dai->dev, "Failed to add channels rule (%d)\n", ret);
+		dev_err(qmc_dai->dev, "Failed to add channels rule (%d)\n", ret);
 		return ret;
 	}
 
@@ -476,7 +466,7 @@ static int qmc_dai_startup(struct snd_pcm_substream *substream,
 				  hw_rule_format_by_channels, qmc_dai,
 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 	if (ret) {
-		dev_err(dai->dev, "Failed to add format rule (%d)\n", ret);
+		dev_err(qmc_dai->dev, "Failed to add format rule (%d)\n", ret);
 		return ret;
 	}
 
@@ -484,13 +474,30 @@ static int qmc_dai_startup(struct snd_pcm_substream *substream,
 					   SNDRV_PCM_HW_PARAM_FRAME_BITS,
 					   frame_bits);
 	if (ret < 0) {
-		dev_err(dai->dev, "Failed to add frame_bits constraint (%d)\n", ret);
+		dev_err(qmc_dai->dev, "Failed to add frame_bits constraint (%d)\n", ret);
 		return ret;
 	}
 
 	return 0;
 }
 
+static int qmc_dai_startup(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+	struct qmc_dai *qmc_dai;
+
+	qmc_dai = qmc_dai_get_data(dai);
+	if (!qmc_dai) {
+		dev_err(dai->dev, "Invalid dai\n");
+		return -EINVAL;
+	}
+
+	prtd->qmc_dai = qmc_dai;
+
+	return qmc_dai_constraints_interleaved(substream, qmc_dai);
+}
+
 static int qmc_dai_hw_params(struct snd_pcm_substream *substream,
 			     struct snd_pcm_hw_params *params,
 			     struct snd_soc_dai *dai)