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Commit c24fdc88 authored by Hebbar, Gururaja's avatar Hebbar, Gururaja Committed by Mark Brown
Browse files

ASoC: tlv320aic3x: Add device tree bindings 



Device tree support for tlv320aic3x CODEC driver.

Signed-off-by: default avatarHebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 2a9a9c87

Documentation/devicetree/bindings/sound/tlv320aic3x.txt

0 → 100644
+20 −0
Original line number Diff line number Diff line 
Texas Instruments - tlv320aic3x Codec module



The tlv320aic3x serial control bus communicates through I2C protocols



Required properties:

- compatible - "string" -  "ti,tlv320aic3x"

- reg - <int> -  I2C slave address





Optional properties:



- gpio-reset - gpio pin number used for codec reset

- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality



Example:



tlv320aic3x: tlv320aic3x@1b {

	compatible = "ti,tlv320aic3x";

	reg = <0x1b>;

};

sound/soc/codecs/tlv320aic3x.c

+31 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ 
#include <linux/i2c.h>

#include <linux/gpio.h>

#include <linux/regulator/consumer.h>

#include <linux/of_gpio.h>

#include <linux/slab.h>

#include <sound/core.h>

#include <sound/pcm.h>
@@ -1457,6 +1458,8 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, 
{

	struct aic3x_pdata *pdata = i2c->dev.platform_data;

	struct aic3x_priv *aic3x;

	struct aic3x_setup_data *ai3x_setup;

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

	int ret;



	aic3x = devm_kzalloc(&i2c->dev, sizeof(struct aic3x_priv), GFP_KERNEL);
@@ -1471,6 +1474,25 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, 
	if (pdata) {

		aic3x->gpio_reset = pdata->gpio_reset;

		aic3x->setup = pdata->setup;

	} else if (np) {

		ai3x_setup = devm_kzalloc(&i2c->dev, sizeof(*ai3x_setup),

								GFP_KERNEL);

		if (ai3x_setup == NULL) {

			dev_err(&i2c->dev, "failed to create private data\n");

			return -ENOMEM;

		}



		ret = of_get_named_gpio(np, "gpio-reset", 0);

		if (ret >= 0)

			aic3x->gpio_reset = ret;

		else

			aic3x->gpio_reset = -1;



		if (of_property_read_u32_array(np, "ai3x-gpio-func",

					ai3x_setup->gpio_func, 2) >= 0) {

			aic3x->setup = ai3x_setup;

		}



	} else {

		aic3x->gpio_reset = -1;

	}
@@ -1488,11 +1510,20 @@ static int aic3x_i2c_remove(struct i2c_client *client) 
	return 0;

}



#if defined(CONFIG_OF)

static const struct of_device_id tlv320aic3x_of_match[] = {

	{ .compatible = "ti,tlv320aic3x", },

	{},

};

MODULE_DEVICE_TABLE(of, tlv320aic3x_of_match);

#endif



/* machine i2c codec control layer */

static struct i2c_driver aic3x_i2c_driver = {

	.driver = {

		.name = "tlv320aic3x-codec",

		.owner = THIS_MODULE,

		.of_match_table = of_match_ptr(tlv320aic3x_of_match),

	},

	.probe	= aic3x_i2c_probe,

	.remove = aic3x_i2c_remove,