diff options
Diffstat (limited to 'drivers/media/tuners/tua9001.c')
| -rw-r--r-- | drivers/media/tuners/tua9001.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c new file mode 100644 index 0000000000..03a3a022b0 --- /dev/null +++ b/drivers/media/tuners/tua9001.c @@ -0,0 +1,267 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Infineon TUA9001 silicon tuner driver + * + * Copyright (C) 2009 Antti Palosaari <crope@iki.fi> + */ + +#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; + 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; + data[1].reg = 0x1f; + data[1].val = div_u64((u64) (c->frequency - 150000000) * 48, 1000000); + + 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_hz = 170 * MHz, + .frequency_max_hz = 862 * MHz, + }, + + .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) +{ + 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, ®map_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 void 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) + dev_err(&client->dev, "Tuner disable failed (%pe)\n", ERR_PTR(ret)); + } + kfree(dev); +} + +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 = { + .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"); |