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Commit d815c703 authored by Sascha Hauer's avatar Sascha Hauer Committed by Mark Brown
Browse files

ASoC: ak4642: Add driver data and driver private struct 



Currently unused, this is done to let the driver distinguish between
the different supported codec types in later patches.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 370f83a1

sound/soc/codecs/ak4642.c

+40 −11
Original line number Diff line number Diff line
@@ -134,6 +134,14 @@ 
/* MD_CTL4 */

#define DACH		(1 << 0)



struct ak4642_drvdata {

	const struct regmap_config *regmap_config;

};



struct ak4642_priv {

	const struct ak4642_drvdata *drvdata;

};



/*

 * Playback Volume (table 39)

 *
@@ -507,30 +515,51 @@ static const struct regmap_config ak4648_regmap = { 
	.num_reg_defaults	= ARRAY_SIZE(ak4648_reg),

};



static const struct ak4642_drvdata ak4642_drvdata = {

	.regmap_config = &ak4642_regmap,

};



static const struct ak4642_drvdata ak4643_drvdata = {

	.regmap_config = &ak4642_regmap,

};



static const struct ak4642_drvdata ak4648_drvdata = {

	.regmap_config = &ak4648_regmap,

};



static struct of_device_id ak4642_of_match[];

static int ak4642_i2c_probe(struct i2c_client *i2c,

			    const struct i2c_device_id *id)

{

	struct device_node *np = i2c->dev.of_node;

	const struct regmap_config *regmap_config = NULL;

	const struct ak4642_drvdata *drvdata = NULL;

	struct regmap *regmap;

	struct ak4642_priv *priv;



	if (np) {

		const struct of_device_id *of_id;



		of_id = of_match_device(ak4642_of_match, &i2c->dev);

		if (of_id)

			regmap_config = of_id->data;

			drvdata = of_id->data;

	} else {

		regmap_config = (const struct regmap_config *)id->driver_data;

		drvdata = (const struct ak4642_drvdata *)id->driver_data;

	}



	if (!regmap_config) {

	if (!drvdata) {

		dev_err(&i2c->dev, "Unknown device type\n");

		return -EINVAL;

	}



	regmap = devm_regmap_init_i2c(i2c, regmap_config);

	priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	priv->drvdata = drvdata;



	i2c_set_clientdata(i2c, priv);



	regmap = devm_regmap_init_i2c(i2c, drvdata->regmap_config);

	if (IS_ERR(regmap))

		return PTR_ERR(regmap);
@@ -545,17 +574,17 @@ static int ak4642_i2c_remove(struct i2c_client *client) 
}



static struct of_device_id ak4642_of_match[] = {

	{ .compatible = "asahi-kasei,ak4642",	.data = &ak4642_regmap},

	{ .compatible = "asahi-kasei,ak4643",	.data = &ak4642_regmap},

	{ .compatible = "asahi-kasei,ak4648",	.data = &ak4648_regmap},

	{ .compatible = "asahi-kasei,ak4642",	.data = &ak4642_drvdata},

	{ .compatible = "asahi-kasei,ak4643",	.data = &ak4643_drvdata},

	{ .compatible = "asahi-kasei,ak4648",	.data = &ak4648_drvdata},

	{},

};

MODULE_DEVICE_TABLE(of, ak4642_of_match);



static const struct i2c_device_id ak4642_i2c_id[] = {

	{ "ak4642", (kernel_ulong_t)&ak4642_regmap },

	{ "ak4643", (kernel_ulong_t)&ak4642_regmap },

	{ "ak4648", (kernel_ulong_t)&ak4648_regmap },

	{ "ak4642", (kernel_ulong_t)&ak4642_drvdata },

	{ "ak4643", (kernel_ulong_t)&ak4643_drvdata },

	{ "ak4648", (kernel_ulong_t)&ak4648_drvdata },

	{ }

};

MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id);