ASoC: SOF: Add a new dai_get_clk topology IPC op

This will help make the code for getting the mclk and bclk IPC specific.
Add the implementation for IPC3 as well.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220317175044.1752400-20-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: ranj063

sound/soc/sof/ipc3-topology.c

@@ -2252,6 +2252,34 @@ static int sof_ipc3_tear_down_all_pipelines(struct snd_sof_dev *sdev, bool verif
 	return 0;
 }
 
+static int sof_ipc3_dai_get_clk(struct snd_sof_dev *sdev, struct snd_sof_dai *dai, int clk_type)
+{
+	struct sof_dai_private_data *private = dai->private;
+
+	if (!private || !private->dai_config)
+		return 0;
+
+	switch (private->dai_config->type) {
+	case SOF_DAI_INTEL_SSP:
+		switch (clk_type) {
+		case SOF_DAI_CLK_INTEL_SSP_MCLK:
+			return private->dai_config->ssp.mclk_rate;
+		case SOF_DAI_CLK_INTEL_SSP_BCLK:
+			return private->dai_config->ssp.bclk_rate;
+		default:
+			break;
+		}
+		dev_err(sdev->dev, "fail to get SSP clk %d rate\n", clk_type);
+		break;
+	default:
+		/* not yet implemented for platforms other than the above */
+		dev_err(sdev->dev, "DAI type %d not supported yet!\n", private->dai_config->type);
+		break;
+	}
+
+	return -EINVAL;
+}
+
 /* token list for each topology object */
 static enum sof_tokens host_token_list[] = {
 	SOF_CORE_TOKENS,
@@ -2359,6 +2387,7 @@ const struct sof_ipc_tplg_ops ipc3_tplg_ops = {
 	.widget_free = sof_ipc3_widget_free,
 	.widget_setup = sof_ipc3_widget_setup,
 	.dai_config = sof_ipc3_dai_config,
+	.dai_get_clk = sof_ipc3_dai_get_clk,
 	.set_up_all_pipelines = sof_ipc3_set_up_all_pipelines,
 	.tear_down_all_pipelines = sof_ipc3_tear_down_all_pipelines,
 };

sound/soc/sof/sof-audio.c

@@ -628,40 +628,23 @@ struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp,
 	return NULL;
 }
 
-#define SOF_DAI_CLK_INTEL_SSP_MCLK	0
-#define SOF_DAI_CLK_INTEL_SSP_BCLK	1
-
 static int sof_dai_get_clk(struct snd_soc_pcm_runtime *rtd, int clk_type)
 {
 	struct snd_soc_component *component =
 		snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
 	struct snd_sof_dai *dai =
 		snd_sof_find_dai(component, (char *)rtd->dai_link->name);
-	struct sof_dai_private_data *private = dai->private;
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
 
 	/* use the tplg configured mclk if existed */
-	if (!dai || !private || !private->dai_config)
+	if (!dai)
 		return 0;
 
-	switch (private->dai_config->type) {
-	case SOF_DAI_INTEL_SSP:
-		switch (clk_type) {
-		case SOF_DAI_CLK_INTEL_SSP_MCLK:
-			return private->dai_config->ssp.mclk_rate;
-		case SOF_DAI_CLK_INTEL_SSP_BCLK:
-			return private->dai_config->ssp.bclk_rate;
-		default:
-			dev_err(rtd->dev, "fail to get SSP clk %d rate\n",
-				clk_type);
-			return -EINVAL;
-		}
-		break;
-	default:
-		/* not yet implemented for platforms other than the above */
-		dev_err(rtd->dev, "DAI type %d not supported yet!\n",
-			private->dai_config->type);
-		return -EINVAL;
-	}
+	if (tplg_ops->dai_get_clk)
+		return tplg_ops->dai_get_clk(sdev, dai, clk_type);
+
+	return 0;
 }
 
 /*

sound/soc/sof/sof-audio.h

@@ -30,6 +30,9 @@
 
 #define WIDGET_IS_DAI(id) ((id) == snd_soc_dapm_dai_in || (id) == snd_soc_dapm_dai_out)
 
+#define SOF_DAI_CLK_INTEL_SSP_MCLK	0
+#define SOF_DAI_CLK_INTEL_SSP_BCLK	1
+
 /*
  * Volume fractional word length define to 16 sets
  * the volume linear gain value to use Qx.16 format
@@ -39,6 +42,7 @@
 struct snd_sof_widget;
 struct snd_sof_route;
 struct snd_sof_control;
+struct snd_sof_dai;
 
 struct snd_sof_dai_config_data {
 	int dai_index;
@@ -117,6 +121,7 @@ struct sof_ipc_tplg_widget_ops {
  * @widget_setup: Function pointer for setting up setup in the DSP
  * @widget_free: Function pointer for freeing widget in the DSP
  * @dai_config: Function pointer for sending DAI config IPC to the DSP
+ * @dai_get_clk: Function pointer for getting the DAI clock setting
  * @set_up_all_pipelines: Function pointer for setting up all topology pipelines
  * @tear_down_all_pipelines: Function pointer for tearing down all topology pipelines
  */
@@ -132,6 +137,7 @@ struct sof_ipc_tplg_ops {
 	int (*widget_free)(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget);
 	int (*dai_config)(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget,
 			  unsigned int flags, struct snd_sof_dai_config_data *data);
+	int (*dai_get_clk)(struct snd_sof_dev *sdev, struct snd_sof_dai *dai, int clk_type);
 	int (*set_up_all_pipelines)(struct snd_sof_dev *sdev, bool verify);
 	int (*tear_down_all_pipelines)(struct snd_sof_dev *sdev, bool verify);
 };