diff options
Diffstat (limited to 'drivers/media/dvb-frontends/ts2020.c')
| -rw-r--r-- | drivers/media/dvb-frontends/ts2020.c | 63 |
1 files changed, 29 insertions, 34 deletions
diff --git a/drivers/media/dvb-frontends/ts2020.c b/drivers/media/dvb-frontends/ts2020.c index 931e5c98da8a..e25add6cc38e 100644 --- a/drivers/media/dvb-frontends/ts2020.c +++ b/drivers/media/dvb-frontends/ts2020.c @@ -1,25 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Montage Technology TS2020 - Silicon Tuner driver Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com> Copyright (C) 2009-2012 TurboSight.com - 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include "dvb_frontend.h" +#include <media/dvb_frontend.h> #include "ts2020.h" #include <linux/regmap.h> #include <linux/math64.h> @@ -180,6 +168,9 @@ static int ts2020_set_tuner_rf(struct dvb_frontend *fe) unsigned int utmp; ret = regmap_read(dev->regmap, 0x3d, &utmp); + if (ret) + return ret; + utmp &= 0x7f; if (utmp < 0x16) utmp = 0xa1; @@ -368,7 +359,7 @@ static int ts2020_read_tuner_gain(struct dvb_frontend *fe, unsigned v_agc, gain2 = clamp_t(long, gain2, 0, 13); v_agc = clamp_t(long, v_agc, 400, 1100); - *_gain = -(gain1 * 2330 + + *_gain = -((__s64)gain1 * 2330 + gain2 * 3500 + v_agc * 24 / 10 * 10 + 10000); @@ -386,7 +377,7 @@ static int ts2020_read_tuner_gain(struct dvb_frontend *fe, unsigned v_agc, gain3 = clamp_t(long, gain3, 0, 6); v_agc = clamp_t(long, v_agc, 600, 1600); - *_gain = -(gain1 * 2650 + + *_gain = -((__s64)gain1 * 2650 + gain2 * 3380 + gain3 * 2850 + v_agc * 176 / 100 * 10 - @@ -498,8 +489,8 @@ static int ts2020_read_signal_strength(struct dvb_frontend *fe, static const struct dvb_tuner_ops ts2020_tuner_ops = { .info = { .name = "TS2020", - .frequency_min = 950000, - .frequency_max = 2150000 + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz }, .init = ts2020_init, .release = ts2020_release, @@ -525,16 +516,16 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, pdata.attach_in_use = true; memset(&board_info, 0, sizeof(board_info)); - strlcpy(board_info.type, "ts2020", I2C_NAME_SIZE); + strscpy(board_info.type, "ts2020", I2C_NAME_SIZE); board_info.addr = config->tuner_address; board_info.platform_data = &pdata; - client = i2c_new_device(i2c, &board_info); - if (!client || !client->dev.driver) + client = i2c_new_client_device(i2c, &board_info); + if (!i2c_client_has_driver(client)) return NULL; return fe; } -EXPORT_SYMBOL(ts2020_attach); +EXPORT_SYMBOL_GPL(ts2020_attach); /* * We implement own regmap locking due to legacy DVB attach which uses frontend @@ -559,17 +550,22 @@ static void ts2020_regmap_unlock(void *__dev) mutex_unlock(&dev->regmap_mutex); } -static int ts2020_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int ts2020_probe(struct i2c_client *client) { struct ts2020_config *pdata = client->dev.platform_data; - struct dvb_frontend *fe = pdata->fe; + struct dvb_frontend *fe; struct ts2020_priv *dev; int ret; u8 u8tmp; unsigned int utmp; char *chip_str; + if (!pdata) { + dev_err(&client->dev, "platform data is mandatory\n"); + return -EINVAL; + } + + fe = pdata->fe; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { ret = -ENOMEM; @@ -578,11 +574,11 @@ static int ts2020_probe(struct i2c_client *client, /* create regmap */ mutex_init(&dev->regmap_mutex); - dev->regmap_config.reg_bits = 8, - dev->regmap_config.val_bits = 8, - dev->regmap_config.lock = ts2020_regmap_lock, - dev->regmap_config.unlock = ts2020_regmap_unlock, - dev->regmap_config.lock_arg = dev, + dev->regmap_config.reg_bits = 8; + dev->regmap_config.val_bits = 8; + dev->regmap_config.lock = ts2020_regmap_lock; + dev->regmap_config.unlock = ts2020_regmap_unlock; + dev->regmap_config.lock_arg = dev; dev->regmap = regmap_init_i2c(client, &dev->regmap_config); if (IS_ERR(dev->regmap)) { ret = PTR_ERR(dev->regmap); @@ -705,7 +701,7 @@ err: return ret; } -static int ts2020_remove(struct i2c_client *client) +static void ts2020_remove(struct i2c_client *client) { struct ts2020_priv *dev = i2c_get_clientdata(client); @@ -717,12 +713,11 @@ static int ts2020_remove(struct i2c_client *client) regmap_exit(dev->regmap); kfree(dev); - return 0; } static const struct i2c_device_id ts2020_id_table[] = { - {"ts2020", 0}, - {"ts2022", 0}, + { "ts2020" }, + { "ts2022" }, {} }; MODULE_DEVICE_TABLE(i2c, ts2020_id_table); |