ASoC: tlv320aic32x4: Fix bdiv clock rate derivation

Current code expects a single channel to be always used. Fix this
situation by forwarding the number of channels used. Then fix the
derivation of the bdiv clock rate.

Fixes: 96c3bb0 ("ASoC: tlv320aic32x4: Dynamically Determine Clocking")
Suggested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20200911173140.29984-3-miquel.raynal@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: miquelraynal

sound/soc/codecs/tlv320aic32x4.c

@@ -665,7 +665,7 @@ static int aic32x4_set_processing_blocks(struct snd_soc_component *component,
 }
 
 static int aic32x4_setup_clocks(struct snd_soc_component *component,
-				unsigned int sample_rate)
+				unsigned int sample_rate, unsigned int channels)
 {
 	u8 aosr;
 	u16 dosr;
@@ -753,7 +753,9 @@ static int aic32x4_setup_clocks(struct snd_soc_component *component,
 							dosr);
 
 						clk_set_rate(clocks[5].clk,
-							sample_rate * 32);
+							sample_rate * 32 *
+							channels);
+
 						return 0;
 					}
 				}
@@ -775,7 +777,8 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream,
 	u8 iface1_reg = 0;
 	u8 dacsetup_reg = 0;
 
-	aic32x4_setup_clocks(component, params_rate(params));
+	aic32x4_setup_clocks(component, params_rate(params),
+			     params_channels(params));
 
 	switch (params_width(params)) {
 	case 16: