drivers/media/tuners/tua9001.c - kernel/msm-4.9 - Gitiles

 /*
  * Infineon TUA 9001 silicon tuner driver
  *
  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
  *
  *    This program is free software; you can redistribute it and/or modify
  *    it under the terms of the GNU General Public License as published by
  *    the Free Software Foundation; either version 2 of the License, or
  *    (at your option) any later version.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU General Public License for more details.
  *
  *    You should have received a copy of the GNU General Public License along
  *    with this program; if not, write to the Free Software Foundation, Inc.,
  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */

 #include "tua9001.h"
 #include "tua9001_priv.h"

 /* write register */
 static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
 {
 	int ret;
 	u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
 	struct i2c_msg msg[1] = {
 		{
 			.addr = priv->i2c_addr,
 			.flags = 0,
 			.len = sizeof(buf),
 			.buf = buf,
 		}
 	};

 	ret = i2c_transfer(priv->i2c, msg, 1);
 	if (ret == 1) {
 		ret = 0;
 	} else {
 		dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
 				KBUILD_MODNAME, ret, reg);
 		ret = -EREMOTEIO;
 	}

 	return ret;
 }

 static int tua9001_init(struct dvb_frontend *fe)
 {
 	struct tua9001_priv *priv = fe->tuner_priv;
 	int ret = 0;
 	u8 i;
 	struct reg_val data[] = {
 		{ 0x1e, 0x6512 },
 		{ 0x25, 0xb888 },
 		{ 0x39, 0x5460 },
 		{ 0x3b, 0x00c0 },
 		{ 0x3a, 0xf000 },
 		{ 0x08, 0x0000 },
 		{ 0x32, 0x0030 },
 		{ 0x41, 0x703a },
 		{ 0x40, 0x1c78 },
 		{ 0x2c, 0x1c00 },
 		{ 0x36, 0xc013 },
 		{ 0x37, 0x6f18 },
 		{ 0x27, 0x0008 },
 		{ 0x2a, 0x0001 },
 		{ 0x34, 0x0a40 },
 	};

 	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

 	if (fe->callback) {
 		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
 				TUA9001_CMD_RESETN, 0);
 		if (ret < 0)
 			goto err;
 	}

 	for (i = 0; i < ARRAY_SIZE(data); i++) {
 		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
 		if (ret < 0)
 			goto err;
 	}
 err:
 	if (ret < 0)
 		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

 	return ret;
 }

 static int tua9001_sleep(struct dvb_frontend *fe)
 {
 	struct tua9001_priv *priv = fe->tuner_priv;
 	int ret = 0;

 	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

 	if (fe->callback)
 		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
 				TUA9001_CMD_RESETN, 1);

 	if (ret < 0)
 		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

 	return ret;
 }

 static int tua9001_set_params(struct dvb_frontend *fe)
 {
 	struct tua9001_priv *priv = fe->tuner_priv;
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	int ret = 0, i;
 	u16 val;
 	u32 frequency;
 	struct reg_val data[2];

 	dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
 			"bandwidth_hz=%d\n", __func__,
 			c->delivery_system, c->frequency, c->bandwidth_hz);

 	switch (c->delivery_system) {
 	case SYS_DVBT:
 		switch (c->bandwidth_hz) {
 		case 8000000:
 			val  = 0x0000;
 			break;
 		case 7000000:
 			val  = 0x1000;
 			break;
 		case 6000000:
 			val  = 0x2000;
 			break;
 		case 5000000:
 			val  = 0x3000;
 			break;
 		default:
 			ret = -EINVAL;
 			goto err;
 		}
 		break;
 	default:
 		ret = -EINVAL;
 		goto err;
 	}

 	data[0].reg = 0x04;
 	data[0].val = val;

 	frequency = (c->frequency - 150000000);
 	frequency /= 100;
 	frequency *= 48;
 	frequency /= 10000;

 	data[1].reg = 0x1f;
 	data[1].val = frequency;

 	if (fe->callback) {
 		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
 				TUA9001_CMD_RXEN, 0);
 		if (ret < 0)
 			goto err;
 	}

 	for (i = 0; i < ARRAY_SIZE(data); i++) {
 		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
 		if (ret < 0)
 			goto err;
 	}

 	if (fe->callback) {
 		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
 				TUA9001_CMD_RXEN, 1);
 		if (ret < 0)
 			goto err;
 	}
 err:
 	if (ret < 0)
 		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

 	return ret;
 }

 static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 {
 	struct tua9001_priv *priv = fe->tuner_priv;

 	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

 	*frequency = 0; /* Zero-IF */

 	return 0;
 }

 static const struct dvb_tuner_ops tua9001_tuner_ops = {
 	.info = {
 		.name           = "Infineon TUA 9001",

 		.frequency_min  = 170000000,
 		.frequency_max  = 862000000,
 		.frequency_step = 0,
 	},

 	.init = tua9001_init,
 	.sleep = tua9001_sleep,
 	.set_params = tua9001_set_params,

 	.get_if_frequency = tua9001_get_if_frequency,
 };

 static int tua9001_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	struct tua9001_priv *dev;
 	struct tua9001_platform_data *pdata = client->dev.platform_data;
 	struct dvb_frontend *fe = pdata->dvb_frontend;
 	int ret;

 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev) {
 		ret = -ENOMEM;
 		goto err;
 	}

 	dev->client = client;
 	dev->i2c_addr = client->addr;
 	dev->i2c = client->adapter;
 	dev->fe = pdata->dvb_frontend;

 	if (fe->callback) {
 		ret = fe->callback(client->adapter,
 				   DVB_FRONTEND_COMPONENT_TUNER,
 				   TUA9001_CMD_CEN, 1);
 		if (ret)
 			goto err_kfree;

 		ret = fe->callback(client->adapter,
 				   DVB_FRONTEND_COMPONENT_TUNER,
 				   TUA9001_CMD_RXEN, 0);
 		if (ret)
 			goto err_kfree;

 		ret = fe->callback(client->adapter,
 				   DVB_FRONTEND_COMPONENT_TUNER,
 				   TUA9001_CMD_RESETN, 1);
 		if (ret)
 			goto err_kfree;
 	}

 	fe->tuner_priv = dev;
 	memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
 			sizeof(struct dvb_tuner_ops));
 	i2c_set_clientdata(client, dev);

 	dev_info(&client->dev, "Infineon TUA 9001 successfully attached\n");
 	return 0;
 err_kfree:
 	kfree(dev);
 err:
 	dev_dbg(&client->dev, "failed=%d\n", ret);
 	return ret;
 }

 static int tua9001_remove(struct i2c_client *client)
 {
 	struct tua9001_priv *dev = i2c_get_clientdata(client);
 	struct dvb_frontend *fe = dev->fe;
 	int ret;

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

 	if (fe->callback) {
 		ret = fe->callback(client->adapter,
 				   DVB_FRONTEND_COMPONENT_TUNER,
 				   TUA9001_CMD_CEN, 0);
 		if (ret)
 			goto err_kfree;
 	}
 	kfree(dev);
 	return 0;
 err_kfree:
 	kfree(dev);
 	dev_dbg(&client->dev, "failed=%d\n", ret);
 	return ret;
 }

 static const struct i2c_device_id tua9001_id_table[] = {
 	{"tua9001", 0},
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, tua9001_id_table);

 static struct i2c_driver tua9001_driver = {
 	.driver = {
 		.owner	= THIS_MODULE,
 		.name	= "tua9001",
 		.suppress_bind_attrs = true,
 	},
 	.probe		= tua9001_probe,
 	.remove		= tua9001_remove,
 	.id_table	= tua9001_id_table,
 };

 module_i2c_driver(tua9001_driver);

 MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 MODULE_LICENSE("GPL");
	/*
	* Infineon TUA 9001 silicon tuner driver
	*
	* Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include "tua9001.h"
	#include "tua9001_priv.h"

	/* write register */
	static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
	{
	int ret;
	u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
	struct i2c_msg msg[1] = {
	{
	.addr = priv->i2c_addr,
	.flags = 0,
	.len = sizeof(buf),
	.buf = buf,
	}
	};

	ret = i2c_transfer(priv->i2c, msg, 1);
	if (ret == 1) {
	ret = 0;
	} else {
	dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
	KBUILD_MODNAME, ret, reg);
	ret = -EREMOTEIO;
	}

	return ret;
	}

	static int tua9001_init(struct dvb_frontend *fe)
	{
	struct tua9001_priv *priv = fe->tuner_priv;
	int ret = 0;
	u8 i;
	struct reg_val data[] = {
	{ 0x1e, 0x6512 },
	{ 0x25, 0xb888 },
	{ 0x39, 0x5460 },
	{ 0x3b, 0x00c0 },
	{ 0x3a, 0xf000 },
	{ 0x08, 0x0000 },
	{ 0x32, 0x0030 },
	{ 0x41, 0x703a },
	{ 0x40, 0x1c78 },
	{ 0x2c, 0x1c00 },
	{ 0x36, 0xc013 },
	{ 0x37, 0x6f18 },
	{ 0x27, 0x0008 },
	{ 0x2a, 0x0001 },
	{ 0x34, 0x0a40 },
	};

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	if (fe->callback) {
	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RESETN, 0);
	if (ret < 0)
	goto err;
	}

	for (i = 0; i < ARRAY_SIZE(data); i++) {
	ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
	if (ret < 0)
	goto err;
	}
	err:
	if (ret < 0)
	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
	}

	static int tua9001_sleep(struct dvb_frontend *fe)
	{
	struct tua9001_priv *priv = fe->tuner_priv;
	int ret = 0;

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	if (fe->callback)
	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RESETN, 1);

	if (ret < 0)
	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
	}

	static int tua9001_set_params(struct dvb_frontend *fe)
	{
	struct tua9001_priv *priv = fe->tuner_priv;
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	int ret = 0, i;
	u16 val;
	u32 frequency;
	struct reg_val data[2];

	dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
	"bandwidth_hz=%d\n", __func__,
	c->delivery_system, c->frequency, c->bandwidth_hz);

	switch (c->delivery_system) {
	case SYS_DVBT:
	switch (c->bandwidth_hz) {
	case 8000000:
	val = 0x0000;
	break;
	case 7000000:
	val = 0x1000;
	break;
	case 6000000:
	val = 0x2000;
	break;
	case 5000000:
	val = 0x3000;
	break;
	default:
	ret = -EINVAL;
	goto err;
	}
	break;
	default:
	ret = -EINVAL;
	goto err;
	}

	data[0].reg = 0x04;
	data[0].val = val;

	frequency = (c->frequency - 150000000);
	frequency /= 100;
	frequency *= 48;
	frequency /= 10000;

	data[1].reg = 0x1f;
	data[1].val = frequency;

	if (fe->callback) {
	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RXEN, 0);
	if (ret < 0)
	goto err;
	}

	for (i = 0; i < ARRAY_SIZE(data); i++) {
	ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
	if (ret < 0)
	goto err;
	}

	if (fe->callback) {
	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RXEN, 1);
	if (ret < 0)
	goto err;
	}
	err:
	if (ret < 0)
	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
	}

	static int tua9001_get_if_frequency(struct dvb_frontend fe, u32 frequency)
	{
	struct tua9001_priv *priv = fe->tuner_priv;

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	frequency = 0; / Zero-IF */

	return 0;
	}

	static const struct dvb_tuner_ops tua9001_tuner_ops = {
	.info = {
	.name = "Infineon TUA 9001",

	.frequency_min = 170000000,
	.frequency_max = 862000000,
	.frequency_step = 0,
	},

	.init = tua9001_init,
	.sleep = tua9001_sleep,
	.set_params = tua9001_set_params,

	.get_if_frequency = tua9001_get_if_frequency,
	};

	static int tua9001_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	struct tua9001_priv *dev;
	struct tua9001_platform_data *pdata = client->dev.platform_data;
	struct dvb_frontend *fe = pdata->dvb_frontend;
	int ret;

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (!dev) {
	ret = -ENOMEM;
	goto err;
	}

	dev->client = client;
	dev->i2c_addr = client->addr;
	dev->i2c = client->adapter;
	dev->fe = pdata->dvb_frontend;

	if (fe->callback) {
	ret = fe->callback(client->adapter,
	DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_CEN, 1);
	if (ret)
	goto err_kfree;

	ret = fe->callback(client->adapter,
	DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RXEN, 0);
	if (ret)
	goto err_kfree;

	ret = fe->callback(client->adapter,
	DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_RESETN, 1);
	if (ret)
	goto err_kfree;
	}

	fe->tuner_priv = dev;
	memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
	sizeof(struct dvb_tuner_ops));
	i2c_set_clientdata(client, dev);

	dev_info(&client->dev, "Infineon TUA 9001 successfully attached\n");
	return 0;
	err_kfree:
	kfree(dev);
	err:
	dev_dbg(&client->dev, "failed=%d\n", ret);
	return ret;
	}

	static int tua9001_remove(struct i2c_client *client)
	{
	struct tua9001_priv *dev = i2c_get_clientdata(client);
	struct dvb_frontend *fe = dev->fe;
	int ret;

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

	if (fe->callback) {
	ret = fe->callback(client->adapter,
	DVB_FRONTEND_COMPONENT_TUNER,
	TUA9001_CMD_CEN, 0);
	if (ret)
	goto err_kfree;
	}
	kfree(dev);
	return 0;
	err_kfree:
	kfree(dev);
	dev_dbg(&client->dev, "failed=%d\n", ret);
	return ret;
	}

	static const struct i2c_device_id tua9001_id_table[] = {
	{"tua9001", 0},
	{}
	};
	MODULE_DEVICE_TABLE(i2c, tua9001_id_table);

	static struct i2c_driver tua9001_driver = {
	.driver = {
	.owner = THIS_MODULE,
	.name = "tua9001",
	.suppress_bind_attrs = true,
	},
	.probe = tua9001_probe,
	.remove = tua9001_remove,
	.id_table = tua9001_id_table,
	};

	module_i2c_driver(tua9001_driver);

	MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
	MODULE_LICENSE("GPL");