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ASoC: tlv320aic32x4: DT support 

Add DT support for this codec. The bindings differ a bit from the aic3x
codec bindings, so I created a new binding documentation.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Markus Pargmann 2014-01-27 13:03:08 +01:00 committed by Mark Brown
parent c671e79d6c
commit 4d16700dd9
2 changed files with 43 additions and 0 deletions
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18
Documentation/devicetree/bindings/sound/tlv320aic32x4.txt Normal file
View File

@ -0,0 +1,18 @@
Texas Instruments - tlv320aic32x4 Codec module
The tlv320aic32x4 serial control bus communicates through I2C protocols
Required properties:
- compatible: Should be "ti,tlv320aic32x4"
- reg: I2C slave address
Optional properties:
- reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt
Example:
codec: tlv320aic32x4@18 {
compatible = "ti,tlv320aic32x4";
reg = <0x18>;
};

25
sound/soc/codecs/tlv320aic32x4.c
View File

@ -29,6 +29,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/i2c.h>
#include <linux/cdev.h>
#include <linux/slab.h>
@ -669,11 +670,22 @@ static struct snd_soc_codec_driver soc_codec_dev_aic32x4 = {
.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
};
static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
struct device_node *np)
{
aic32x4->swapdacs = false;
aic32x4->micpga_routing = 0;
aic32x4->rstn_gpio = of_get_named_gpio(np, "reset-gpios", 0);
return 0;
}
static int aic32x4_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct aic32x4_pdata *pdata = i2c->dev.platform_data;
struct aic32x4_priv *aic32x4;
struct device_node *np = i2c->dev.of_node;
int ret;
aic32x4 = devm_kzalloc(&i2c->dev, sizeof(struct aic32x4_priv),
@ -692,6 +704,12 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c,
aic32x4->swapdacs = pdata->swapdacs;
aic32x4->micpga_routing = pdata->micpga_routing;
aic32x4->rstn_gpio = pdata->rstn_gpio;
} else if (np) {
ret = aic32x4_parse_dt(aic32x4, np);
if (ret) {
dev_err(&i2c->dev, "Failed to parse DT node\n");
return ret;
}
} else {
aic32x4->power_cfg = 0;
aic32x4->swapdacs = false;
@ -723,10 +741,17 @@ static const struct i2c_device_id aic32x4_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, aic32x4_i2c_id);
static const struct of_device_id aic32x4_of_id[] = {
{ .compatible = "ti,tlv320aic32x4", },
{ /* senitel */ }
};
MODULE_DEVICE_TABLE(of, aic32x4_of_id);
static struct i2c_driver aic32x4_i2c_driver = {
.driver = {
.name = "tlv320aic32x4",
.owner = THIS_MODULE,
.of_match_table = aic32x4_of_id,
},
.probe = aic32x4_i2c_probe,
.remove = aic32x4_i2c_remove,