Unverified Commit ef6c3209 authored by Alexander Martinz's avatar Alexander Martinz Committed by Mark Brown
Browse files

ASoC: codecs: tfa989x: Add support for tfa9890 

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: default avatarAlexander Martinz <amartinz@shiftphones.com>
Reviewed-by: default avatarStephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20220602164504.261361-1-amartinz@shiftphones.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent aa7407f8

sound/soc/codecs/tfa989x.c

+30 −0
Original line number Diff line number Diff line
@@ -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 },

	{ }