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Commit f95a4883 authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Mark Brown
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ASoC: tpa6130a2: Add device tree support 



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

Signed-off-by: default avatarSebastian Reichel <sre@debian.org>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 31d141e3

Documentation/devicetree/bindings/sound/tpa6130a2.txt

0 → 100644
+27 −0
Original line number Diff line number Diff line 
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>;

};

sound/soc/codecs/tpa6130a2.c

+23 −9
Original line number Diff line number Diff line
@@ -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,