ASoC/soundwire: intel: simplify callbacks for params/hw_free

We don't really need to pass a substream to the callback, we only need
the direction. No functionality change, only simplification to enable
improve suspend with paused streams.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20211224021034.26635-3-yung-chuan.liao@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/soundwire/intel.c

@@ -711,7 +711,7 @@ intel_pdi_alh_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi)
 }
 
 static int intel_params_stream(struct sdw_intel *sdw,
-			       struct snd_pcm_substream *substream,
+			       int stream,
 			       struct snd_soc_dai *dai,
 			       struct snd_pcm_hw_params *hw_params,
 			       int link_id, int alh_stream_id)
@@ -719,7 +719,7 @@ static int intel_params_stream(struct sdw_intel *sdw,
 	struct sdw_intel_link_res *res = sdw->link_res;
 	struct sdw_intel_stream_params_data params_data;
 
-	params_data.substream = substream;
+	params_data.stream = stream; /* direction */
 	params_data.dai = dai;
 	params_data.hw_params = hw_params;
 	params_data.link_id = link_id;
@@ -732,14 +732,14 @@ static int intel_params_stream(struct sdw_intel *sdw,
 }
 
 static int intel_free_stream(struct sdw_intel *sdw,
-			     struct snd_pcm_substream *substream,
+			     int stream,
 			     struct snd_soc_dai *dai,
 			     int link_id)
 {
 	struct sdw_intel_link_res *res = sdw->link_res;
 	struct sdw_intel_stream_free_data free_data;
 
-	free_data.substream = substream;
+	free_data.stream = stream; /* direction */
 	free_data.dai = dai;
 	free_data.link_id = link_id;
 
@@ -876,7 +876,7 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
 	dma->hw_params = params;
 
 	/* Inform DSP about PDI stream number */
-	ret = intel_params_stream(sdw, substream, dai, params,
+	ret = intel_params_stream(sdw, substream->stream, dai, params,
 				  sdw->instance,
 				  pdi->intel_alh_id);
 	if (ret)
@@ -953,7 +953,7 @@ static int intel_prepare(struct snd_pcm_substream *substream,
 		sdw_cdns_config_stream(cdns, ch, dir, dma->pdi);
 
 		/* Inform DSP about PDI stream number */
-		ret = intel_params_stream(sdw, substream, dai,
+		ret = intel_params_stream(sdw, substream->stream, dai,
 					  dma->hw_params,
 					  sdw->instance,
 					  dma->pdi->intel_alh_id);
@@ -987,7 +987,7 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 		return ret;
 	}
 
-	ret = intel_free_stream(sdw, substream, dai, sdw->instance);
+	ret = intel_free_stream(sdw, substream->stream, dai, sdw->instance);
 	if (ret < 0) {
 		dev_err(dai->dev, "intel_free_stream: failed %d\n", ret);
 		return ret;

include/linux/soundwire/sdw_intel.h

@@ -92,7 +92,7 @@
  * firmware.
  */
 struct sdw_intel_stream_params_data {
-	struct snd_pcm_substream *substream;
+	int stream;
 	struct snd_soc_dai *dai;
 	struct snd_pcm_hw_params *hw_params;
 	int link_id;
@@ -105,7 +105,7 @@ struct sdw_intel_stream_params_data {
  * firmware.
  */
 struct sdw_intel_stream_free_data {
-	struct snd_pcm_substream *substream;
+	int stream;
 	struct snd_soc_dai *dai;
 	int link_id;
 };

sound/soc/sof/intel/hda.c

@@ -184,12 +184,11 @@ static int sdw_dai_config_ipc(struct snd_sof_dev *sdev,
 static int sdw_params_stream(struct device *dev,
 			     struct sdw_intel_stream_params_data *params_data)
 {
-	struct snd_pcm_substream *substream = params_data->substream;
 	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
 	struct snd_soc_dai *d = params_data->dai;
 	struct snd_soc_dapm_widget *w;
 
-	w = snd_soc_dai_get_widget(d, substream->stream);
+	w = snd_soc_dai_get_widget(d, params_data->stream);
 
 	return sdw_dai_config_ipc(sdev, w, params_data->link_id, params_data->alh_stream_id,
 				  d->id, true);
@@ -198,12 +197,11 @@ static int sdw_params_stream(struct device *dev,
 static int sdw_free_stream(struct device *dev,
 			   struct sdw_intel_stream_free_data *free_data)
 {
-	struct snd_pcm_substream *substream = free_data->substream;
 	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
 	struct snd_soc_dai *d = free_data->dai;
 	struct snd_soc_dapm_widget *w;
 
-	w = snd_soc_dai_get_widget(d, substream->stream);
+	w = snd_soc_dai_get_widget(d, free_data->stream);
 
 	/* send invalid stream_id */
 	return sdw_dai_config_ipc(sdev, w, free_data->link_id, 0xFFFF, d->id, false);