ASoC: sun4i-i2s: Add offset to RX channel select

[ Upstream commit f9927000cb35f250051f0f1878db12ee2626eea1 ]

Whilst testing the capture functionality of the i2s on the newer
SoCs it was noticed that the recording was somewhat distorted.
This was due to the offset not being set correctly on the receiver
side.
Signed-off-by: NMarcus Cooper <codekipper@gmail.com>
Acked-by: NMaxime Ripard <maxime.ripard@bootlin.com>
Acked-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

sound/soc/sunxi/sun4i-i2s.c

@@ -460,6 +460,10 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 		regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG,
 				   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
 				   SUN8I_I2S_TX_CHAN_OFFSET(offset));
+
+		regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG,
+				   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
+				   SUN8I_I2S_TX_CHAN_OFFSET(offset));
 	}
 
 	regmap_field_write(i2s->field_fmt_mode, val);