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ASoC: tlv320aic3x: Add device tree bindings 

Device tree support for tlv320aic3x CODEC driver.

Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Hebbar, Gururaja 2012-08-27 18:56:44 +05:30 committed by Mark Brown
parent 2a9a9c876f
commit c24fdc886f
2 changed files with 51 additions and 0 deletions
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20
Documentation/devicetree/bindings/sound/tlv320aic3x.txt Normal file
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@ -0,0 +1,20 @@
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>;
};

31
sound/soc/codecs/tlv320aic3x.c
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@ -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,