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ASoC: ak4642: Add driver data and driver private struct

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

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Sascha Hauer 2014-05-14 09:37:35 +02:00 committed by Mark Brown
parent 370f83a156
commit d815c703ce
1 changed files with 40 additions and 11 deletions
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51
sound/soc/codecs/ak4642.c
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@ -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);