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Commit 7b09eea5 authored by Brian Austin's avatar Brian Austin Committed by Mark Brown
Browse files

ASoC: cs42l73: Add Device Tree support for CS42L73 



This patch adds support for device tree for the CS42L73 CODEC

Signed-off-by: default avatarBrian Austin <brian.austin@cirrus.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent f9ca0606

Documentation/devicetree/bindings/sound/cs42l73.txt

0 → 100644
+22 −0
Original line number Diff line number Diff line 
CS42L73 audio CODEC



Required properties:



  - compatible : "cirrus,cs42l73"



  - reg : the I2C address of the device for I2C



Optional properties:



  - reset_gpio : a GPIO spec for the reset pin.

  - chgfreq    : Charge Pump Frequency values 0x00-0x0F





Example:



codec: cs42l73@4a {

	compatible = "cirrus,cs42l73";

	reg = <0x4a>;

	reset_gpio = <&gpio 10 0>;

	chgfreq = <0x05>;

};
 
 No newline at end of file

sound/soc/codecs/cs42l73.c

+27 −2
Original line number Diff line number Diff line
@@ -17,7 +17,7 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/of_gpio.h>

#include <linux/pm.h>

#include <linux/i2c.h>

#include <linux/regmap.h>
@@ -1416,6 +1416,7 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client, 
	int ret;

	unsigned int devid = 0;

	unsigned int reg;

	u32 val32;



	cs42l73 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l73_private),

			       GFP_KERNEL);
@@ -1431,8 +1432,25 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client, 
		return ret;

	}



	if (pdata)

	if (pdata) {

		cs42l73->pdata = *pdata;

	} else {

		pdata = devm_kzalloc(&i2c_client->dev,

				     sizeof(struct cs42l73_platform_data),

				GFP_KERNEL);

		if (!pdata) {

			dev_err(&i2c_client->dev, "could not allocate pdata\n");

			return -ENOMEM;

		}

		if (i2c_client->dev.of_node) {

			if (of_property_read_u32(i2c_client->dev.of_node,

				"chgfreq", &val32) >= 0)

				pdata->chgfreq = val32;

		}

		pdata->reset_gpio = of_get_named_gpio(i2c_client->dev.of_node,

						"reset-gpio", 0);

		cs42l73->pdata = *pdata;

	}



	i2c_set_clientdata(i2c_client, cs42l73);
@@ -1493,6 +1511,12 @@ static int cs42l73_i2c_remove(struct i2c_client *client) 
	return 0;

}



static const struct of_device_id cs42l73_of_match[] = {

	{ .compatible = "cirrus,cs42l73", },

	{},

};

MODULE_DEVICE_TABLE(of, cs42l73_of_match);



static const struct i2c_device_id cs42l73_id[] = {

	{"cs42l73", 0},

	{}
@@ -1504,6 +1528,7 @@ static struct i2c_driver cs42l73_i2c_driver = { 
	.driver = {

		   .name = "cs42l73",

		   .owner = THIS_MODULE,

		   .of_match_table = cs42l73_of_match,

		   },

	.id_table = cs42l73_id,

	.probe = cs42l73_i2c_probe,