ASoC: pcm1792a: Convert to params_width()

This will help support future enhancements in the way we negotiate
parameters in the core.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Michael Trimarchi <michael@amarulasolutions.com>

sound/soc/codecs/pcm1792a.c

@@ -107,24 +107,35 @@ static int pcm1792a_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_codec *codec = dai->codec;
 	struct pcm1792a_private *priv = snd_soc_codec_get_drvdata(codec);
 	int val = 0, ret;
-	int pcm_format = params_format(params);
 
 	priv->rate = params_rate(params);
 
 	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_RIGHT_J:
-		if (pcm_format == SNDRV_PCM_FORMAT_S24_LE ||
-		    pcm_format == SNDRV_PCM_FORMAT_S32_LE)
-			val = 0x02;
-		else if (pcm_format == SNDRV_PCM_FORMAT_S16_LE)
-			val = 0x00;
+		switch (params_width(params)) {
+		case 24:
+		case 32:
+			val = 2;
+			break;
+		case 16:
+			val = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
 		break;
 	case SND_SOC_DAIFMT_I2S:
-		if (pcm_format == SNDRV_PCM_FORMAT_S24_LE ||
-		    pcm_format == SNDRV_PCM_FORMAT_S32_LE)
-			val = 0x05;
-		else if (pcm_format == SNDRV_PCM_FORMAT_S16_LE)
-			val = 0x04;
+		switch (params_width(params)) {
+		case 24:
+		case 32:
+			val = 5;
+			break;
+		case 16:
+			val = 4;
+			break;
+		default:
+			return -EINVAL;
+		}
 		break;
 	default:
 		dev_err(codec->dev, "Invalid DAI format\n");