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Subject[PATCH v6 4/7] ASoC: sun4i-i2s: Add functions for RX and TX channel selects
Date
From: Marcus Cooper <codekipper@gmail.com>

Newer SoCs like the H6 have the channel select bits in a different
positions than 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@gmail.com>
---
sound/soc/sunxi/sun4i-i2s.c | 68 ++++++++++++++++++++++++++++++-------
1 file changed, 56 insertions(+), 12 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 8d28a386872f..19988d61a085 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -120,6 +120,8 @@
#define SUN8I_I2S_TX_CHAN_OFFSET(offset) (offset << 12)
#define SUN8I_I2S_TX_CHAN_EN_MASK GENMASK(11, 4)
#define SUN8I_I2S_TX_CHAN_EN(num_chan) (((1 << num_chan) - 1) << 4)
+#define SUN8I_I2S_TX_CHAN_SEL_MASK GENMASK(2, 0)
+#define SUN8I_I2S_TX_CHAN_SEL(chan) (chan - 1)

#define SUN8I_I2S_RX_CHAN_SEL_REG 0x54
#define SUN8I_I2S_RX_CHAN_MAP_REG 0x58
@@ -161,6 +163,8 @@ struct sun4i_i2s_quirks {
void (*set_rxchanoffset)(const struct sun4i_i2s *);
void (*set_txchanen)(const struct sun4i_i2s *, int, int);
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);
};

struct sun4i_i2s {
@@ -405,12 +409,8 @@ static int sun4i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
regmap_write(i2s->regmap, SUN4I_I2S_RX_CHAN_MAP_REG, 0x00003210);

/* Configure the channels */
- regmap_update_bits(i2s->regmap, SUN4I_I2S_TX_CHAN_SEL_REG,
- SUN4I_I2S_CHAN_SEL_MASK,
- SUN4I_I2S_CHAN_SEL(channels));
- regmap_update_bits(i2s->regmap, SUN4I_I2S_RX_CHAN_SEL_REG,
- SUN4I_I2S_CHAN_SEL_MASK,
- SUN4I_I2S_CHAN_SEL(channels));
+ i2s->variant->set_txchansel(i2s, 0, channels);
+ i2s->variant->set_rxchansel(i2s, channels);

return 0;
}
@@ -430,12 +430,8 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_MAP_REG, 0x76543210);

/* Configure the channels */
- regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG,
- SUN4I_I2S_CHAN_SEL_MASK,
- SUN4I_I2S_CHAN_SEL(channels));
- regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG,
- SUN4I_I2S_CHAN_SEL_MASK,
- SUN4I_I2S_CHAN_SEL(channels));
+ i2s->variant->set_txchansel(i2s, 0, channels);
+ i2s->variant->set_rxchansel(i2s, channels);

regmap_update_bits(i2s->regmap, SUN8I_I2S_CHAN_CFG_REG,
SUN8I_I2S_CHAN_CFG_TX_SLOT_NUM_MASK,
@@ -504,6 +500,40 @@ static void sun8i_i2s_set_rxchanen(const struct sun4i_i2s *i2s, int channel)
SUN8I_I2S_TX_CHAN_EN(channel));
}

+static void sun4i_i2s_set_txchansel(const struct sun4i_i2s *i2s, int output,
+ int channel)
+{
+ if (output == 0)
+ regmap_write(i2s->regmap,
+ SUN4I_I2S_TX_CHAN_SEL_REG,
+ SUN4I_I2S_CHAN_SEL(channel));
+}
+
+static void sun8i_i2s_set_txchansel(const struct sun4i_i2s *i2s, int output,
+ int channel)
+{
+ if (output >= 0 && output < 4)
+ regmap_update_bits(i2s->regmap,
+ SUN8I_I2S_TX_CHAN_SEL_REG + (output * 4),
+ SUN8I_I2S_TX_CHAN_SEL_MASK,
+ SUN8I_I2S_TX_CHAN_SEL(channel));
+}
+
+static void sun4i_i2s_set_rxchansel(const struct sun4i_i2s *i2s, int channel)
+{
+ regmap_write(i2s->regmap,
+ SUN4I_I2S_RX_CHAN_SEL_REG,
+ SUN4I_I2S_CHAN_SEL(channel));
+}
+
+static void sun8i_i2s_set_rxchansel(const struct sun4i_i2s *i2s, int channel)
+{
+ regmap_update_bits(i2s->regmap,
+ SUN8I_I2S_RX_CHAN_SEL_REG,
+ SUN8I_I2S_TX_CHAN_SEL_MASK,
+ SUN8I_I2S_TX_CHAN_SEL(channel));
+}
+
static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@@ -528,6 +558,10 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
return ret;
}

+ /* Configure the channels */
+ i2s->variant->set_txchansel(i2s, 0, channels);
+ i2s->variant->set_rxchansel(i2s, channels);
+
if (i2s->variant->set_txchanen)
i2s->variant->set_txchanen(i2s, 0, channels);

@@ -1118,6 +1152,8 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
.get_wss = sun4i_i2s_get_wss,
.set_chan_cfg = sun4i_i2s_set_chan_cfg,
.set_fmt = sun4i_i2s_set_soc_fmt,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
@@ -1136,6 +1172,8 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
.get_wss = sun4i_i2s_get_wss,
.set_chan_cfg = sun4i_i2s_set_chan_cfg,
.set_fmt = sun4i_i2s_set_soc_fmt,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

/*
@@ -1159,6 +1197,8 @@ static const struct sun4i_i2s_quirks sun8i_a83t_i2s_quirks = {
.get_wss = sun4i_i2s_get_wss,
.set_chan_cfg = sun4i_i2s_set_chan_cfg,
.set_fmt = sun4i_i2s_set_soc_fmt,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
@@ -1181,6 +1221,8 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
.set_rxchanoffset = sun8i_i2s_set_rxchanoffset,
.set_txchanen = sun8i_i2s_set_txchanen,
.set_rxchanen = sun8i_i2s_set_rxchanen,
+ .set_txchansel = sun8i_i2s_set_txchansel,
+ .set_rxchansel = sun8i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
@@ -1199,6 +1241,8 @@ static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
.get_wss = sun4i_i2s_get_wss,
.set_chan_cfg = sun4i_i2s_set_chan_cfg,
.set_fmt = sun4i_i2s_set_soc_fmt,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static int sun4i_i2s_init_regmap_fields(struct device *dev,
--
2.23.0
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