ASoC: rt5677: Convert to use rl6231_calc_dmic_clk

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/rt5677.c

@@ -637,21 +637,7 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = w->codec;
 	struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(codec);
-	int div[] = {2, 3, 4, 6, 8, 12}, idx = -EINVAL, i;
-	int rate, red, bound, temp;
-
-	rate = rt5677->sysclk;
-	red = 3000000 * 12;
-	for (i = 0; i < ARRAY_SIZE(div); i++) {
-		bound = div[i] * 3000000;
-		if (rate > bound)
-			continue;
-		temp = bound - rate;
-		if (temp < red) {
-			red = temp;
-			idx = i;
-		}
-	}
+	int idx = rl6231_calc_dmic_clk(rt5677->sysclk);
 
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");