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Commit b561baec authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[media] a8293: implement I2C client bindings 



Implement I2C client bindings.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent d69abb79

drivers/media/dvb-frontends/a8293.c

+84 −3
Original line number Diff line number Diff line
@@ -22,8 +22,9 @@ 
#include "a8293.h"



struct a8293_priv {

	u8 i2c_addr;

	struct i2c_adapter *i2c;

	const struct a8293_config *cfg;

	struct i2c_client *client;

	u8 reg[2];

};
@@ -32,7 +33,7 @@ static int a8293_i2c(struct a8293_priv *priv, u8 *val, int len, bool rd) 
	int ret;

	struct i2c_msg msg[1] = {

		{

			.addr = priv->cfg->i2c_addr,

			.addr = priv->i2c_addr,

			.len = len,

			.buf = val,

		}
@@ -128,7 +129,7 @@ struct dvb_frontend *a8293_attach(struct dvb_frontend *fe, 


	/* setup the priv */

	priv->i2c = i2c;

	priv->cfg = cfg;

	priv->i2c_addr = cfg->i2c_addr;

	fe->sec_priv = priv;



	/* check if the SEC is there */
@@ -164,6 +165,86 @@ struct dvb_frontend *a8293_attach(struct dvb_frontend *fe, 
}

EXPORT_SYMBOL(a8293_attach);



static int a8293_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	struct a8293_priv *dev;

	struct a8293_platform_data *pdata = client->dev.platform_data;

	struct dvb_frontend *fe = pdata->dvb_frontend;

	int ret;

	u8 buf[2];



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	if (!dev) {

		ret = -ENOMEM;

		goto err;

	}



	dev->client = client;

	dev->i2c = client->adapter;

	dev->i2c_addr = client->addr;



	/* check if the SEC is there */

	ret = a8293_rd(dev, buf, 2);

	if (ret)

		goto err_kfree;



	/* ENB=0 */

	dev->reg[0] = 0x10;

	ret = a8293_wr(dev, &dev->reg[0], 1);

	if (ret)

		goto err_kfree;



	/* TMODE=0, TGATE=1 */

	dev->reg[1] = 0x82;

	ret = a8293_wr(dev, &dev->reg[1], 1);

	if (ret)

		goto err_kfree;



	/* override frontend ops */

	fe->ops.set_voltage = a8293_set_voltage;



	fe->sec_priv = dev;

	i2c_set_clientdata(client, dev);



	dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n");

	return 0;

err_kfree:

	kfree(dev);

err:

	dev_dbg(&client->dev, "failed=%d\n", ret);

	return ret;

}



static int a8293_remove(struct i2c_client *client)

{

	struct a8293_dev *dev = i2c_get_clientdata(client);



	dev_dbg(&client->dev, "\n");



	kfree(dev);

	return 0;

}



static const struct i2c_device_id a8293_id_table[] = {

	{"a8293", 0},

	{}

};

MODULE_DEVICE_TABLE(i2c, a8293_id_table);



static struct i2c_driver a8293_driver = {

	.driver = {

		.owner	= THIS_MODULE,

		.name	= "a8293",

		.suppress_bind_attrs = true,

	},

	.probe		= a8293_probe,

	.remove		= a8293_remove,

	.id_table	= a8293_id_table,

};



module_i2c_driver(a8293_driver);



MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");

MODULE_DESCRIPTION("Allegro A8293 SEC driver");

MODULE_LICENSE("GPL");

drivers/media/dvb-frontends/a8293.h

+15 −0
Original line number Diff line number Diff line
@@ -21,8 +21,23 @@ 
#ifndef A8293_H

#define A8293_H



#include "dvb_frontend.h"

#include <linux/kconfig.h>



/*

 * I2C address

 * 0x08, 0x09, 0x0a, 0x0b

 */



/**

 * struct a8293_platform_data - Platform data for the a8293 driver

 * @dvb_frontend: DVB frontend.

 */

struct a8293_platform_data {

	struct dvb_frontend *dvb_frontend;

};





struct a8293_config {

	u8 i2c_addr;

};