ASoC: rt700: 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/20221123165432.594972-6-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt700.c

@@ -19,6 +19,7 @@
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
+#include <sound/sdw.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include <sound/initval.h>
@@ -910,11 +911,10 @@ static int rt700_pcm_hw_params(struct snd_pcm_substream *substream,
 {
 	struct snd_soc_component *component = dai->component;
 	struct rt700_priv *rt700 = 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 retval, port, num_channels;
+	int retval;
 	unsigned int val = 0;
 
 	dev_dbg(dai->dev, "%s %s", __func__, dai->name);
@@ -927,35 +927,25 @@ static int rt700_pcm_hw_params(struct snd_pcm_substream *substream,
 		return -EINVAL;
 
 	/* SoundWire specific configuration */
+	snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
+
 	/* This code assumes port 1 for playback and port 2 for capture */
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		direction = SDW_DATA_DIR_RX;
-		port = 1;
-	} else {
-		direction = SDW_DATA_DIR_TX;
-		port = 2;
-	}
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		port_config.num = 1;
+	else
+		port_config.num = 2;
 
 	switch (dai->id) {
 	case RT700_AIF1:
 		break;
 	case RT700_AIF2:
-		port += 2;
+		port_config.num += 2;
 		break;
 	default:
 		dev_err(component->dev, "Invalid DAI id %d\n", dai->id);
 		return -EINVAL;
 	}
 
-	stream_config.frame_rate = params_rate(params);
-	stream_config.ch_count = params_channels(params);
-	stream_config.bps = snd_pcm_format_width(params_format(params));
-	stream_config.direction = direction;
-
-	num_channels = params_channels(params);
-	port_config.ch_mask = (1 << (num_channels)) - 1;
-	port_config.num = port;
-
 	retval = sdw_stream_add_slave(rt700->slave, &stream_config,
 					&port_config, 1, stream->sdw_stream);
 	if (retval) {