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ASoC: tpa6130a2: Add device tree support 

Add device tree support to tpa6130a2 driver and document the
bindings.

Signed-off-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Sebastian Reichel 2013-10-23 14:03:28 +02:00 committed by Mark Brown
parent 31d141e3a6
commit f95a48834c
2 changed files with 50 additions and 9 deletions
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27
Documentation/devicetree/bindings/sound/tpa6130a2.txt Normal file
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@ -0,0 +1,27 @@
Texas Instruments - tpa6130a2 Codec module
The tpa6130a2 serial control bus communicates through I2C protocols
Required properties:
- compatible - "string" - One of:
"ti,tpa6130a2" - TPA6130A2
"ti,tpa6140a2" - TPA6140A2
- reg - <int> - I2C slave address
- Vdd-supply - <phandle> - power supply regulator
Optional properties:
- power-gpio - gpio pin to power the device
Example:
tpa6130a2: tpa6130a2@60 {
compatible = "ti,tpa6130a2";
reg = <0x60>;
Vdd-supply = <&vmmc2>;
power-gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>;
};

32
sound/soc/codecs/tpa6130a2.c
View File

@ -30,6 +30,7 @@
#include <sound/tpa6130a2-plat.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of_gpio.h>
#include "tpa6130a2.h"
@ -364,30 +365,33 @@ static int tpa6130a2_probe(struct i2c_client *client,
{
struct device *dev;
struct tpa6130a2_data *data;
struct tpa6130a2_platform_data *pdata;
struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
struct device_node *np = client->dev.of_node;
const char *regulator;
int ret;
dev = &client->dev;
if (client->dev.platform_data == NULL) {
dev_err(dev, "Platform data not set\n");
dump_stack();
return -ENODEV;
}
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (data == NULL) {
dev_err(dev, "Can not allocate memory\n");
return -ENOMEM;
}
if (pdata) {
data->power_gpio = pdata->power_gpio;
} else if (np) {
data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
} else {
dev_err(dev, "Platform data not set\n");
dump_stack();
return -ENODEV;
}
tpa6130a2_client = client;
i2c_set_clientdata(tpa6130a2_client, data);
pdata = client->dev.platform_data;
data->power_gpio = pdata->power_gpio;
data->id = id->driver_data;
mutex_init(&data->mutex);
@ -466,10 +470,20 @@ static const struct i2c_device_id tpa6130a2_id[] = {
};
MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tpa6130a2_of_match[] = {
{ .compatible = "ti,tpa6130a2", },
{ .compatible = "ti,tpa6140a2" },
{},
};
MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
#endif
static struct i2c_driver tpa6130a2_i2c_driver = {
.driver = {
.name = "tpa6130a2",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(tpa6130a2_of_match),
},
.probe = tpa6130a2_probe,
.remove = tpa6130a2_remove,