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Subject[PATCH v5 07/15] 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 | 87 ++++++++++++++++++++++---------------
1 file changed, 53 insertions(+), 34 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index ad2ff83deeb7..0b98adde0717 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -115,6 +115,8 @@
#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
@@ -141,8 +143,6 @@ struct sun4i_i2s;
* @field_fmt_sext: regmap field to set the sign extension.
* @field_txchanmap: location of the tx channel mapping register.
* @field_rxchanmap: location of the rx channel mapping register.
- * @field_txchansel: location of the tx channel select bit fields.
- * @field_rxchansel: location of the rx channel select bit fields.
*/
struct sun4i_i2s_quirks {
bool has_reset;
@@ -164,8 +164,6 @@ struct sun4i_i2s_quirks {
struct reg_field field_fmt_sext;
struct reg_field field_txchanmap;
struct reg_field field_rxchanmap;
- struct reg_field field_txchansel;
- struct reg_field field_rxchansel;

s8 (*get_sr)(const struct sun4i_i2s *, int);
s8 (*get_wss)(const struct sun4i_i2s *, int);
@@ -174,6 +172,8 @@ 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 {
@@ -197,8 +197,6 @@ struct sun4i_i2s {
struct regmap_field *field_fmt_sext;
struct regmap_field *field_txchanmap;
struct regmap_field *field_rxchanmap;
- struct regmap_field *field_txchansel;
- struct regmap_field *field_rxchansel;

const struct sun4i_i2s_quirks *variant;

@@ -465,6 +463,42 @@ 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)
+{
+ /* Configure the channels */
+ 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)
+{
+ /* Configure the channels */
+ 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)
@@ -494,11 +528,8 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
regmap_field_write(i2s->field_rxchanmap, 0x00003210);

/* Configure the channels */
- regmap_field_write(i2s->field_txchansel,
- SUN4I_I2S_CHAN_SEL(params_channels(params)));
-
- regmap_field_write(i2s->field_rxchansel,
- SUN4I_I2S_CHAN_SEL(params_channels(params)));
+ 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);
@@ -1048,11 +1079,11 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
.field_fmt_sext = REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
- .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
- .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2),
.get_sr = sun4i_i2s_get_sr,
.get_wss = sun4i_i2s_get_wss,
.set_format = sun4i_i2s_set_format,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
@@ -1069,11 +1100,11 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
.field_fmt_sext = REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
- .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
- .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2),
.get_sr = sun4i_i2s_get_sr,
.get_wss = sun4i_i2s_get_wss,
.set_format = sun4i_i2s_set_format,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun8i_a83t_i2s_quirks = {
@@ -1089,11 +1120,11 @@ static const struct sun4i_i2s_quirks sun8i_a83t_i2s_quirks = {
.field_fmt_mode = REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
- .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
- .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2),
.get_sr = sun8i_i2s_get_sr_wss,
.get_wss = sun8i_i2s_get_sr_wss,
.set_format = sun4i_i2s_set_format,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
@@ -1113,8 +1144,6 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
.field_fmt_sext = REG_FIELD(SUN4I_I2S_FMT1_REG, 4, 5),
.field_txchanmap = REG_FIELD(SUN8I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN8I_I2S_RX_CHAN_MAP_REG, 0, 31),
- .field_txchansel = REG_FIELD(SUN8I_I2S_TX_CHAN_SEL_REG, 0, 2),
- .field_rxchansel = REG_FIELD(SUN8I_I2S_RX_CHAN_SEL_REG, 0, 2),
.get_sr = sun8i_i2s_get_sr_wss,
.get_wss = sun8i_i2s_get_sr_wss,
.set_format = sun8i_i2s_set_format,
@@ -1122,6 +1151,8 @@ 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 = {
@@ -1138,11 +1169,11 @@ static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
.field_fmt_sext = REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
- .field_txchansel = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
- .field_rxchansel = REG_FIELD(SUN4I_I2S_RX_CHAN_SEL_REG, 0, 2),
.get_sr = sun4i_i2s_get_sr,
.get_wss = sun4i_i2s_get_wss,
.set_format = sun4i_i2s_set_format,
+ .set_txchansel = sun4i_i2s_set_txchansel,
+ .set_rxchansel = sun4i_i2s_set_rxchansel,
};

static int sun4i_i2s_init_regmap_fields(struct device *dev,
@@ -1199,19 +1230,7 @@ static int sun4i_i2s_init_regmap_fields(struct device *dev,
i2s->field_rxchanmap =
devm_regmap_field_alloc(dev, i2s->regmap,
i2s->variant->field_rxchanmap);
- if (IS_ERR(i2s->field_rxchanmap))
- return PTR_ERR(i2s->field_rxchanmap);
-
- i2s->field_txchansel =
- devm_regmap_field_alloc(dev, i2s->regmap,
- i2s->variant->field_txchansel);
- if (IS_ERR(i2s->field_txchansel))
- return PTR_ERR(i2s->field_txchansel);
-
- i2s->field_rxchansel =
- devm_regmap_field_alloc(dev, i2s->regmap,
- i2s->variant->field_rxchansel);
- return PTR_ERR_OR_ZERO(i2s->field_rxchansel);
+ return PTR_ERR_OR_ZERO(i2s->field_rxchanmap);
}

static int sun4i_i2s_probe(struct platform_device *pdev)
--
2.22.0
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