linux/drivers/media/tuners/tda18212.c
Thomas Gleixner 1621633323 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
Based on 2 normalized pattern(s):

  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

  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 [no]_[pad]_[ctrl] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 176 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:39 +02:00

279 lines
5.9 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* NXP TDA18212HN silicon tuner driver
*
* Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
*/
#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_hz = 48 * MHz,
.frequency_max_hz = 864 * MHz,
.frequency_step_hz = 1 * kHz,
},
.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, &regmap_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 = {
.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");