linux/drivers/media/tuners/tua9001.c
Antti Palosaari dd219a87e4 [media] tua9001: use regmap for I2C register access
Use regmap for I2C register access.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-18 15:54:46 -03:00

291 lines
6.1 KiB
C

/*
* Infineon TUA9001 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.
*/
#include "tua9001_priv.h"
static int tua9001_init(struct dvb_frontend *fe)
{
struct tua9001_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret, i;
static const struct tua9001_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(&client->dev, "\n");
if (fe->callback) {
ret = fe->callback(client->adapter,
DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RESETN, 0);
if (ret)
goto err;
}
for (i = 0; i < ARRAY_SIZE(data); i++) {
ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int tua9001_sleep(struct dvb_frontend *fe)
{
struct tua9001_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret;
dev_dbg(&client->dev, "\n");
if (fe->callback) {
ret = fe->callback(client->adapter,
DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RESETN, 1);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int tua9001_set_params(struct dvb_frontend *fe)
{
struct tua9001_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u16 val;
u32 frequency;
struct tua9001_reg_val data[2];
dev_dbg(&client->dev,
"delivery_system=%u frequency=%u bandwidth_hz=%u\n",
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(client->adapter,
DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RXEN, 0);
if (ret)
goto err;
}
for (i = 0; i < ARRAY_SIZE(data); i++) {
ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
if (ret)
goto err;
}
if (fe->callback) {
ret = fe->callback(client->adapter,
DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RXEN, 1);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct tua9001_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "\n");
*frequency = 0; /* Zero-IF */
return 0;
}
static const struct dvb_tuner_ops tua9001_tuner_ops = {
.info = {
.name = "Infineon TUA9001",
.frequency_min = 170000000,
.frequency_max = 862000000,
},
.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_dev *dev;
struct tua9001_platform_data *pdata = client->dev.platform_data;
struct dvb_frontend *fe = pdata->dvb_frontend;
int ret;
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 16,
};
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
goto err;
}
dev->fe = pdata->dvb_frontend;
dev->client = client;
dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
if (IS_ERR(dev->regmap)) {
ret = PTR_ERR(dev->regmap);
goto err_kfree;
}
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 TUA9001 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_dev *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 TUA9001 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");