ASoC: max98373-sdw: Switch to new snd_sdw_params_to_config helper

The conversion from hw_params to SoundWire config is pretty
standard as such most of the conversion can be handled by the new
snd_sdw_params_to_config helper function.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221123165432.594972-2-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max98373-sdw.c

@@ -10,6 +10,7 @@
 #include <linux/slab.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
+#include <sound/sdw.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>
 #include <linux/of.h>
@@ -533,10 +534,8 @@ static int max98373_sdw_dai_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_component *component = dai->component;
 	struct max98373_priv *max98373 =
 		snd_soc_component_get_drvdata(component);
-
-	struct sdw_stream_config stream_config;
-	struct sdw_port_config port_config;
-	enum sdw_data_direction direction;
+	struct sdw_stream_config stream_config = {0};
+	struct sdw_port_config port_config = {0};
 	struct sdw_stream_data *stream;
 	int ret, chan_sz, sampling_rate;
 
@@ -548,28 +547,20 @@ static int max98373_sdw_dai_hw_params(struct snd_pcm_substream *substream,
 	if (!max98373->slave)
 		return -EINVAL;
 
+	snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
+
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		direction = SDW_DATA_DIR_RX;
 		port_config.num = 1;
-	} else {
-		direction = SDW_DATA_DIR_TX;
-		port_config.num = 3;
-	}
-
-	stream_config.frame_rate = params_rate(params);
-	stream_config.bps = snd_pcm_format_width(params_format(params));
-	stream_config.direction = direction;
 
-	if (max98373->slot && direction == SDW_DATA_DIR_RX) {
+		if (max98373->slot) {
 			stream_config.ch_count = max98373->slot;
 			port_config.ch_mask = max98373->rx_mask;
+		}
 	} else {
+		port_config.num = 3;
+
 		/* only IV are supported by capture */
-		if (direction == SDW_DATA_DIR_TX)
 		stream_config.ch_count = 2;
-		else
-			stream_config.ch_count = params_channels(params);
-
 		port_config.ch_mask = GENMASK((int)stream_config.ch_count - 1, 0);
 	}