[alsa-devel] [PATCH v6 5/7] ASoC: sun4i-i2s: Add functions for RX and TX channel mapping

[codekipper at gmail.com]

From: Marcus Cooper <codekipper at gmail.com>

As we will eventually add multi-channel audio support to the i2s
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 | 45 +++++++++++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 19988d61a085..63ae9da180f2 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -165,6 +165,8 @@ struct sun4i_i2s_quirks {
 	void	(*set_rxchanen)(const struct sun4i_i2s *, int);
 	void	(*set_txchansel)(const struct sun4i_i2s *, int, int);
 	void	(*set_rxchansel)(const struct sun4i_i2s *, int);
+	void	(*set_txchanmap)(const struct sun4i_i2s *, int, int);
+	void	(*set_rxchanmap)(const struct sun4i_i2s *, int);
 };
 
 struct sun4i_i2s {
@@ -405,8 +407,8 @@ static int sun4i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
 	unsigned int channels = params_channels(params);
 
 	/* Map the channels for playback and capture */
-	regmap_write(i2s->regmap, SUN4I_I2S_TX_CHAN_MAP_REG, 0x76543210);
-	regmap_write(i2s->regmap, SUN4I_I2S_RX_CHAN_MAP_REG, 0x00003210);
+	i2s->variant->set_txchanmap(i2s, 0, 0x76543210);
+	i2s->variant->set_rxchanmap(i2s, 0x00003210);
 
 	/* Configure the channels */
 	i2s->variant->set_txchansel(i2s, 0, channels);
@@ -426,8 +428,8 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
 		slots = i2s->slots;
 
 	/* Map the channels for playback and capture */
-	regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG, 0x76543210);
-	regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_MAP_REG, 0x76543210);
+	i2s->variant->set_txchanmap(i2s, 0, 0x76543210);
+	i2s->variant->set_rxchanmap(i2s, 0x00003210);
 
 	/* Configure the channels */
 	i2s->variant->set_txchansel(i2s, 0, channels);
@@ -534,6 +536,31 @@ static void sun8i_i2s_set_rxchansel(const struct sun4i_i2s *i2s, int channel)
 			   SUN8I_I2S_TX_CHAN_SEL(channel));
 }
 
+static void sun4i_i2s_set_txchanmap(const struct sun4i_i2s *i2s, int output,
+				    int channel)
+{
+	if (output == 0)
+		regmap_write(i2s->regmap, SUN4I_I2S_TX_CHAN_MAP_REG, channel);
+}
+
+static void sun8i_i2s_set_txchanmap(const struct sun4i_i2s *i2s, int output,
+				    int channel)
+{
+	if (output >= 0 && output < 4)
+		regmap_write(i2s->regmap,
+			     SUN8I_I2S_TX_CHAN_MAP_REG + (output * 4), channel);
+}
+
+static void sun4i_i2s_set_rxchanmap(const struct sun4i_i2s *i2s, int channel)
+{
+	regmap_write(i2s->regmap, SUN4I_I2S_RX_CHAN_MAP_REG, channel);
+}
+
+static void sun8i_i2s_set_rxchanmap(const struct sun4i_i2s *i2s, int channel)
+{
+	regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_MAP_REG, channel);
+}
+
 static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params,
 			       struct snd_soc_dai *dai)
@@ -1154,6 +1181,8 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
 	.set_fmt		= sun4i_i2s_set_soc_fmt,
 	.set_txchansel		= sun4i_i2s_set_txchansel,
 	.set_rxchansel		= sun4i_i2s_set_rxchansel,
+	.set_txchanmap		= sun4i_i2s_set_txchanmap,
+	.set_rxchanmap		= sun4i_i2s_set_rxchanmap,
 };
 
 static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
@@ -1174,6 +1203,8 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
 	.set_fmt		= sun4i_i2s_set_soc_fmt,
 	.set_txchansel		= sun4i_i2s_set_txchansel,
 	.set_rxchansel		= sun4i_i2s_set_rxchansel,
+	.set_txchanmap		= sun4i_i2s_set_txchanmap,
+	.set_rxchanmap		= sun4i_i2s_set_rxchanmap,
 };
 
 /*
@@ -1199,6 +1230,8 @@ static const struct sun4i_i2s_quirks sun8i_a83t_i2s_quirks = {
 	.set_fmt		= sun4i_i2s_set_soc_fmt,
 	.set_txchansel		= sun4i_i2s_set_txchansel,
 	.set_rxchansel		= sun4i_i2s_set_rxchansel,
+	.set_txchanmap		= sun4i_i2s_set_txchanmap,
+	.set_rxchanmap		= sun4i_i2s_set_rxchanmap,
 };
 
 static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
@@ -1223,6 +1256,8 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
 	.set_rxchanen		= sun8i_i2s_set_rxchanen,
 	.set_txchansel		= sun8i_i2s_set_txchansel,
 	.set_rxchansel		= sun8i_i2s_set_rxchansel,
+	.set_txchanmap		= sun8i_i2s_set_txchanmap,
+	.set_rxchanmap		= sun8i_i2s_set_rxchanmap,
 };
 
 static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
@@ -1243,6 +1278,8 @@ static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
 	.set_fmt		= sun4i_i2s_set_soc_fmt,
 	.set_txchansel		= sun4i_i2s_set_txchansel,
 	.set_rxchansel		= sun4i_i2s_set_rxchansel,
+	.set_txchanmap		= sun4i_i2s_set_txchanmap,
+	.set_rxchanmap		= sun4i_i2s_set_rxchanmap,
 };
 
 static int sun4i_i2s_init_regmap_fields(struct device *dev,
-- 
2.23.0