[alsa-devel] [PATCH v6 2/7] ASoC: sun4i-i2s: Add functions for RX and TX channel offsets

[codekipper at gmail.com]

From: Marcus Cooper <codekipper at gmail.com>

Newer SoCs like the H6 have the channel offset bits in a different
position to what is on the H3. As we will eventually add multi-
channel support then create function calls as opposed to regmap
fields to add support for different devices.

Signed-off-by: Marcus Cooper <codekipper at gmail.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index f1a80973c450..875567881f30 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -157,6 +157,8 @@ struct sun4i_i2s_quirks {
 	int	(*set_chan_cfg)(const struct sun4i_i2s *,
 				const struct snd_pcm_hw_params *);
 	int	(*set_fmt)(struct sun4i_i2s *, unsigned int);
+	void	(*set_txchanoffset)(const struct sun4i_i2s *, int);
+	void	(*set_rxchanoffset)(const struct sun4i_i2s *);
 };
 
 struct sun4i_i2s {
@@ -467,6 +469,23 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
 	return 0;
 }
 
+static void sun8i_i2s_set_txchanoffset(const struct sun4i_i2s *i2s, int output)
+{
+	if (output >= 0 && output < 4)
+		regmap_update_bits(i2s->regmap,
+				   SUN8I_I2S_TX_CHAN_SEL_REG + (output * 4),
+				   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
+				   SUN8I_I2S_TX_CHAN_OFFSET(i2s->offset));
+}
+
+static void sun8i_i2s_set_rxchanoffset(const struct sun4i_i2s *i2s)
+{
+	regmap_update_bits(i2s->regmap,
+			   SUN8I_I2S_RX_CHAN_SEL_REG,
+			   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
+			   SUN8I_I2S_TX_CHAN_OFFSET(i2s->offset));
+}
+
 static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params,
 			       struct snd_soc_dai *dai)
@@ -661,12 +680,10 @@ static int sun8i_i2s_set_soc_fmt(struct sun4i_i2s *i2s,
 
 	regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
 			   SUN8I_I2S_CTRL_MODE_MASK, mode);
-	regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG,
-			   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
-			   SUN8I_I2S_TX_CHAN_OFFSET(i2s->offset));
-	regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG,
-			   SUN8I_I2S_TX_CHAN_OFFSET_MASK,
-			   SUN8I_I2S_TX_CHAN_OFFSET(i2s->offset));
+	if (i2s->variant->set_txchanoffset)
+		i2s->variant->set_txchanoffset(i2s, 0);
+	if (i2s->variant->set_rxchanoffset)
+		i2s->variant->set_rxchanoffset(i2s);
 
 	/* DAI clock master masks */
 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
@@ -1136,6 +1153,8 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
 	.get_wss		= sun8i_i2s_get_sr_wss,
 	.set_chan_cfg		= sun8i_i2s_set_chan_cfg,
 	.set_fmt		= sun8i_i2s_set_soc_fmt,
+	.set_txchanoffset	= sun8i_i2s_set_txchanoffset,
+	.set_rxchanoffset	= sun8i_i2s_set_rxchanoffset,
 };
 
 static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
-- 
2.23.0