292 lines
6.6 KiB
C
292 lines
6.6 KiB
C
/*
|
|
* NXP TDA18212HN silicon tuner driver
|
|
*
|
|
* Copyright (C) 2011 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 "tda18212.h"
|
|
#include <linux/regmap.h>
|
|
|
|
struct tda18212_dev {
|
|
struct tda18212_config cfg;
|
|
struct i2c_client *client;
|
|
struct regmap *regmap;
|
|
|
|
u32 if_frequency;
|
|
};
|
|
|
|
static int tda18212_set_params(struct dvb_frontend *fe)
|
|
{
|
|
struct tda18212_dev *dev = fe->tuner_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int ret, i;
|
|
u32 if_khz;
|
|
u8 buf[9];
|
|
#define DVBT_6 0
|
|
#define DVBT_7 1
|
|
#define DVBT_8 2
|
|
#define DVBT2_6 3
|
|
#define DVBT2_7 4
|
|
#define DVBT2_8 5
|
|
#define DVBC_6 6
|
|
#define DVBC_8 7
|
|
#define ATSC_VSB 8
|
|
#define ATSC_QAM 9
|
|
static const u8 bw_params[][3] = {
|
|
/* reg: 0f 13 23 */
|
|
[DVBT_6] = { 0xb3, 0x20, 0x03 },
|
|
[DVBT_7] = { 0xb3, 0x31, 0x01 },
|
|
[DVBT_8] = { 0xb3, 0x22, 0x01 },
|
|
[DVBT2_6] = { 0xbc, 0x20, 0x03 },
|
|
[DVBT2_7] = { 0xbc, 0x72, 0x03 },
|
|
[DVBT2_8] = { 0xbc, 0x22, 0x01 },
|
|
[DVBC_6] = { 0x92, 0x50, 0x03 },
|
|
[DVBC_8] = { 0x92, 0x53, 0x03 },
|
|
[ATSC_VSB] = { 0x7d, 0x20, 0x63 },
|
|
[ATSC_QAM] = { 0x7d, 0x20, 0x63 },
|
|
};
|
|
|
|
dev_dbg(&dev->client->dev,
|
|
"delivery_system=%d frequency=%d bandwidth_hz=%d\n",
|
|
c->delivery_system, c->frequency,
|
|
c->bandwidth_hz);
|
|
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
|
|
|
|
switch (c->delivery_system) {
|
|
case SYS_ATSC:
|
|
if_khz = dev->cfg.if_atsc_vsb;
|
|
i = ATSC_VSB;
|
|
break;
|
|
case SYS_DVBC_ANNEX_B:
|
|
if_khz = dev->cfg.if_atsc_qam;
|
|
i = ATSC_QAM;
|
|
break;
|
|
case SYS_DVBT:
|
|
switch (c->bandwidth_hz) {
|
|
case 6000000:
|
|
if_khz = dev->cfg.if_dvbt_6;
|
|
i = DVBT_6;
|
|
break;
|
|
case 7000000:
|
|
if_khz = dev->cfg.if_dvbt_7;
|
|
i = DVBT_7;
|
|
break;
|
|
case 8000000:
|
|
if_khz = dev->cfg.if_dvbt_8;
|
|
i = DVBT_8;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
break;
|
|
case SYS_DVBT2:
|
|
switch (c->bandwidth_hz) {
|
|
case 6000000:
|
|
if_khz = dev->cfg.if_dvbt2_6;
|
|
i = DVBT2_6;
|
|
break;
|
|
case 7000000:
|
|
if_khz = dev->cfg.if_dvbt2_7;
|
|
i = DVBT2_7;
|
|
break;
|
|
case 8000000:
|
|
if_khz = dev->cfg.if_dvbt2_8;
|
|
i = DVBT2_8;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
break;
|
|
case SYS_DVBC_ANNEX_A:
|
|
case SYS_DVBC_ANNEX_C:
|
|
if_khz = dev->cfg.if_dvbc;
|
|
i = DVBC_8;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
|
|
if (ret)
|
|
goto error;
|
|
|
|
ret = regmap_write(dev->regmap, 0x06, 0x00);
|
|
if (ret)
|
|
goto error;
|
|
|
|
ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
|
|
if (ret)
|
|
goto error;
|
|
|
|
buf[0] = 0x02;
|
|
buf[1] = bw_params[i][1];
|
|
buf[2] = 0x03; /* default value */
|
|
buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
|
|
buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
|
|
buf[5] = ((c->frequency / 1000) >> 8) & 0xff;
|
|
buf[6] = ((c->frequency / 1000) >> 0) & 0xff;
|
|
buf[7] = 0xc1;
|
|
buf[8] = 0x01;
|
|
ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
|
|
if (ret)
|
|
goto error;
|
|
|
|
/* actual IF rounded as it is on register */
|
|
dev->if_frequency = buf[3] * 50 * 1000;
|
|
|
|
exit:
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
|
|
|
|
return ret;
|
|
|
|
error:
|
|
dev_dbg(&dev->client->dev, "failed=%d\n", ret);
|
|
goto exit;
|
|
}
|
|
|
|
static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
{
|
|
struct tda18212_dev *dev = fe->tuner_priv;
|
|
|
|
*frequency = dev->if_frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dvb_tuner_ops tda18212_tuner_ops = {
|
|
.info = {
|
|
.name = "NXP TDA18212",
|
|
|
|
.frequency_min = 48000000,
|
|
.frequency_max = 864000000,
|
|
.frequency_step = 1000,
|
|
},
|
|
|
|
.set_params = tda18212_set_params,
|
|
.get_if_frequency = tda18212_get_if_frequency,
|
|
};
|
|
|
|
static int tda18212_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct tda18212_config *cfg = client->dev.platform_data;
|
|
struct dvb_frontend *fe = cfg->fe;
|
|
struct tda18212_dev *dev;
|
|
int ret;
|
|
unsigned int chip_id;
|
|
char *version;
|
|
static const struct regmap_config regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
};
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (dev == NULL) {
|
|
ret = -ENOMEM;
|
|
dev_err(&client->dev, "kzalloc() failed\n");
|
|
goto err;
|
|
}
|
|
|
|
memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
|
|
dev->client = client;
|
|
dev->regmap = devm_regmap_init_i2c(client, ®map_config);
|
|
if (IS_ERR(dev->regmap)) {
|
|
ret = PTR_ERR(dev->regmap);
|
|
goto err;
|
|
}
|
|
|
|
/* check if the tuner is there */
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
|
|
|
|
ret = regmap_read(dev->regmap, 0x00, &chip_id);
|
|
dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
|
|
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
|
|
|
|
if (ret)
|
|
goto err;
|
|
|
|
switch (chip_id) {
|
|
case 0xc7:
|
|
version = "M"; /* master */
|
|
break;
|
|
case 0x47:
|
|
version = "S"; /* slave */
|
|
break;
|
|
default:
|
|
ret = -ENODEV;
|
|
goto err;
|
|
}
|
|
|
|
dev_info(&dev->client->dev,
|
|
"NXP TDA18212HN/%s successfully identified\n", version);
|
|
|
|
fe->tuner_priv = dev;
|
|
memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
|
|
sizeof(struct dvb_tuner_ops));
|
|
i2c_set_clientdata(client, dev);
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
kfree(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int tda18212_remove(struct i2c_client *client)
|
|
{
|
|
struct tda18212_dev *dev = i2c_get_clientdata(client);
|
|
struct dvb_frontend *fe = dev->cfg.fe;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
|
|
fe->tuner_priv = NULL;
|
|
kfree(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id tda18212_id[] = {
|
|
{"tda18212", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tda18212_id);
|
|
|
|
static struct i2c_driver tda18212_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "tda18212",
|
|
},
|
|
.probe = tda18212_probe,
|
|
.remove = tda18212_remove,
|
|
.id_table = tda18212_id,
|
|
};
|
|
|
|
module_i2c_driver(tda18212_driver);
|
|
|
|
MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
|
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
|
MODULE_LICENSE("GPL");
|