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ASoC: codecs: tfa989x: Add support for tfa9890

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The initialization sequence is taken from the version provided
by the supplier [1].

This allows speakers using the TFA9890 amplifier to work, which are
used by various mobile phones such as the SHIFT6mq.

[1]: https://source.codeaurora.org/external/mas/tfa98xx/tree/src/tfa_init.c?id=d2cd12931fbc48df988b62931fb9960d4e9dc05d#n1827

Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20220602164504.261361-1-amartinz@shiftphones.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexander Martinz 2022-06-02 18:45:03 +02:00 committed by Mark Brown
parent aa7407f807
commit ef6c320942
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1 changed files with 30 additions and 0 deletions
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30
sound/soc/codecs/tfa989x.c
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@ -40,12 +40,14 @@
#define TFA989X_I2S_SEL_REG 0x0a
#define TFA989X_I2S_SEL_REG_SPKR_MSK GENMASK(10, 9) /* speaker impedance */
#define TFA989X_I2S_SEL_REG_DCFG_MSK GENMASK(14, 11) /* DCDC compensation */
#define TFA989X_HIDE_UNHIDE_KEY 0x40
#define TFA989X_PWM_CONTROL 0x41
#define TFA989X_CURRENTSENSE1 0x46
#define TFA989X_CURRENTSENSE2 0x47
#define TFA989X_CURRENTSENSE3 0x48
#define TFA989X_CURRENTSENSE4 0x49
#define TFA9890_REVISION 0x80
#define TFA9895_REVISION 0x12
#define TFA9897_REVISION 0x97
@ -188,6 +190,33 @@ static struct snd_soc_dai_driver tfa989x_dai = {
.ops = &tfa989x_dai_ops,
};
static int tfa9890_init(struct regmap *regmap)
{
int ret;
/* unhide keys to allow updating them */
ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x5a6b);
if (ret)
return ret;
/* update PLL registers */
ret = regmap_set_bits(regmap, 0x59, 0x3);
if (ret)
return ret;
/* hide keys again */
ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x0000);
if (ret)
return ret;
return regmap_write(regmap, TFA989X_CURRENTSENSE2, 0x7BE1);
}
static const struct tfa989x_rev tfa9890_rev = {
.rev = TFA9890_REVISION,
.init = tfa9890_init,
};
static const struct reg_sequence tfa9895_reg_init[] = {
/* some other registers must be set for optimal amplifier behaviour */
{ TFA989X_BAT_PROT, 0x13ab },
@ -376,6 +405,7 @@ static int tfa989x_i2c_probe(struct i2c_client *i2c)
}
static const struct of_device_id tfa989x_of_match[] = {
{ .compatible = "nxp,tfa9890", .data = &tfa9890_rev },
{ .compatible = "nxp,tfa9895", .data = &tfa9895_rev },
{ .compatible = "nxp,tfa9897", .data = &tfa9897_rev },
{ }