ASoC: Return correct codec clock in s3c64xx-i2s

Instead of always returnig pointer to the 'audio-bus' clock,
check which clock is used to generate internal clocks and
then return it's pointer.
Signed-off-by: Jassi <jassi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/s3c24xx/s3c64xx-i2s.c

@@ -124,8 +124,12 @@ static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
 struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
 {
 	struct s3c_i2sv2_info *i2s = to_info(dai);
+	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
 
-	return i2s->iis_cclk;
+	if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
+		return i2s->iis_cclk;
+	else
+		return i2s->iis_pclk;
 }
 EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);