diff options
Diffstat (limited to 'drivers/media/dvb-frontends/ts2020.c')
| -rw-r--r-- | drivers/media/dvb-frontends/ts2020.c | 302 |
1 files changed, 269 insertions, 33 deletions
diff --git a/drivers/media/dvb-frontends/ts2020.c b/drivers/media/dvb-frontends/ts2020.c index 9aba044dabed..90164a38cd36 100644 --- a/drivers/media/dvb-frontends/ts2020.c +++ b/drivers/media/dvb-frontends/ts2020.c @@ -26,12 +26,23 @@ #define FREQ_OFFSET_LOW_SYM_RATE 3000 struct ts2020_priv { + struct dvb_frontend *fe; /* i2c details */ int i2c_address; struct i2c_adapter *i2c; - u8 clk_out_div; + u8 clk_out:2; + u8 clk_out_div:5; u32 frequency; u32 frequency_div; +#define TS2020_M88TS2020 0 +#define TS2020_M88TS2022 1 + u8 tuner; + u8 loop_through:1; +}; + +struct ts2020_reg_val { + u8 reg; + u8 val; }; static int ts2020_release(struct dvb_frontend *fe) @@ -112,40 +123,77 @@ static int ts2020_readreg(struct dvb_frontend *fe, u8 reg) static int ts2020_sleep(struct dvb_frontend *fe) { struct ts2020_priv *priv = fe->tuner_priv; - int ret; - u8 buf[] = { 10, 0 }; - struct i2c_msg msg = { - .addr = priv->i2c_address, - .flags = 0, - .buf = buf, - .len = 2 - }; + u8 u8tmp; - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - ret = i2c_transfer(priv->i2c, &msg, 1); - if (ret != 1) - printk(KERN_ERR "%s: i2c error\n", __func__); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); + if (priv->tuner == TS2020_M88TS2020) + u8tmp = 0x0a; /* XXX: probably wrong */ + else + u8tmp = 0x00; - return (ret == 1) ? 0 : ret; + return ts2020_writereg(fe, u8tmp, 0x00); } static int ts2020_init(struct dvb_frontend *fe) { struct ts2020_priv *priv = fe->tuner_priv; + int i; + u8 u8tmp; + + if (priv->tuner == TS2020_M88TS2020) { + ts2020_writereg(fe, 0x42, 0x73); + ts2020_writereg(fe, 0x05, priv->clk_out_div); + ts2020_writereg(fe, 0x20, 0x27); + ts2020_writereg(fe, 0x07, 0x02); + ts2020_writereg(fe, 0x11, 0xff); + ts2020_writereg(fe, 0x60, 0xf9); + ts2020_writereg(fe, 0x08, 0x01); + ts2020_writereg(fe, 0x00, 0x41); + } else { + static const struct ts2020_reg_val reg_vals[] = { + {0x7d, 0x9d}, + {0x7c, 0x9a}, + {0x7a, 0x76}, + {0x3b, 0x01}, + {0x63, 0x88}, + {0x61, 0x85}, + {0x22, 0x30}, + {0x30, 0x40}, + {0x20, 0x23}, + {0x24, 0x02}, + {0x12, 0xa0}, + }; + + ts2020_writereg(fe, 0x00, 0x01); + ts2020_writereg(fe, 0x00, 0x03); + + switch (priv->clk_out) { + case TS2020_CLK_OUT_DISABLED: + u8tmp = 0x60; + break; + case TS2020_CLK_OUT_ENABLED: + u8tmp = 0x70; + ts2020_writereg(fe, 0x05, priv->clk_out_div); + break; + case TS2020_CLK_OUT_ENABLED_XTALOUT: + u8tmp = 0x6c; + break; + default: + u8tmp = 0x60; + break; + } - ts2020_writereg(fe, 0x42, 0x73); - ts2020_writereg(fe, 0x05, priv->clk_out_div); - ts2020_writereg(fe, 0x20, 0x27); - ts2020_writereg(fe, 0x07, 0x02); - ts2020_writereg(fe, 0x11, 0xff); - ts2020_writereg(fe, 0x60, 0xf9); - ts2020_writereg(fe, 0x08, 0x01); - ts2020_writereg(fe, 0x00, 0x41); + ts2020_writereg(fe, 0x42, u8tmp); + + if (priv->loop_through) + u8tmp = 0xec; + else + u8tmp = 0x6c; + + ts2020_writereg(fe, 0x62, u8tmp); + + for (i = 0; i < ARRAY_SIZE(reg_vals); i++) + ts2020_writereg(fe, reg_vals[i].reg, reg_vals[i].val); + } return 0; } @@ -203,7 +251,14 @@ static int ts2020_set_params(struct dvb_frontend *fe) ndiv = ndiv + ndiv % 2; ndiv = ndiv - 1024; - ret = ts2020_writereg(fe, 0x10, 0x80 | lo); + if (priv->tuner == TS2020_M88TS2020) { + lpf_coeff = 2766; + ret = ts2020_writereg(fe, 0x10, 0x80 | lo); + } else { + lpf_coeff = 3200; + ret = ts2020_writereg(fe, 0x10, 0x0b); + ret |= ts2020_writereg(fe, 0x11, 0x40); + } /* Set frequency divider */ ret |= ts2020_writereg(fe, 0x01, (ndiv >> 8) & 0xf); @@ -220,7 +275,8 @@ static int ts2020_set_params(struct dvb_frontend *fe) ret |= ts2020_tuner_gate_ctrl(fe, 0x08); /* Tuner RF */ - ret |= ts2020_set_tuner_rf(fe); + if (priv->tuner == TS2020_M88TS2020) + ret |= ts2020_set_tuner_rf(fe); gdiv28 = (TS2020_XTAL_FREQ / 1000 * 1694 + 500) / 1000; ret |= ts2020_writereg(fe, 0x04, gdiv28 & 0xff); @@ -228,6 +284,15 @@ static int ts2020_set_params(struct dvb_frontend *fe) if (ret < 0) return -ENODEV; + if (priv->tuner == TS2020_M88TS2022) { + ret = ts2020_writereg(fe, 0x25, 0x00); + ret |= ts2020_writereg(fe, 0x27, 0x70); + ret |= ts2020_writereg(fe, 0x41, 0x09); + ret |= ts2020_writereg(fe, 0x08, 0x0b); + if (ret < 0) + return -ENODEV; + } + value = ts2020_readreg(fe, 0x26); f3db = (symbol_rate * 135) / 200 + 2000; @@ -243,8 +308,6 @@ static int ts2020_set_params(struct dvb_frontend *fe) if (mlpf_max > 63) mlpf_max = 63; - lpf_coeff = 2766; - nlpf = (f3db * gdiv28 * 2 / lpf_coeff / (TS2020_XTAL_FREQ / 1000) + 1) / 2; if (nlpf > 23) @@ -285,6 +348,13 @@ static int ts2020_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct ts2020_priv *priv = fe->tuner_priv; *frequency = priv->frequency; + + return 0; +} + +static int ts2020_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + *frequency = 0; /* Zero-IF */ return 0; } @@ -324,6 +394,7 @@ static struct dvb_tuner_ops ts2020_tuner_ops = { .sleep = ts2020_sleep, .set_params = ts2020_set_params, .get_frequency = ts2020_get_frequency, + .get_if_frequency = ts2020_get_if_frequency, .get_rf_strength = ts2020_read_signal_strength, }; @@ -340,8 +411,10 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, priv->i2c_address = config->tuner_address; priv->i2c = i2c; + priv->clk_out = config->clk_out; priv->clk_out_div = config->clk_out_div; priv->frequency_div = config->frequency_div; + priv->fe = fe; fe->tuner_priv = priv; if (!priv->frequency_div) @@ -358,9 +431,13 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, /* Check the tuner version */ buf = ts2020_readreg(fe, 0x00); - if ((buf == 0x01) || (buf == 0x41) || (buf == 0x81)) + if ((buf == 0x01) || (buf == 0x41) || (buf == 0x81)) { printk(KERN_INFO "%s: Find tuner TS2020!\n", __func__); - else { + priv->tuner = TS2020_M88TS2020; + } else if ((buf == 0x83) || (buf == 0xc3)) { + printk(KERN_INFO "%s: Find tuner TS2022!\n", __func__); + priv->tuner = TS2020_M88TS2022; + } else { printk(KERN_ERR "%s: Read tuner reg[0] = %d\n", __func__, buf); kfree(priv); return NULL; @@ -373,6 +450,165 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, } EXPORT_SYMBOL(ts2020_attach); +static int ts2020_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ts2020_config *pdata = client->dev.platform_data; + struct dvb_frontend *fe = pdata->fe; + struct ts2020_priv *dev; + int ret; + u8 u8tmp; + unsigned int utmp; + char *chip_str; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->i2c = client->adapter; + dev->i2c_address = client->addr; + dev->clk_out = pdata->clk_out; + dev->clk_out_div = pdata->clk_out_div; + dev->frequency_div = pdata->frequency_div; + dev->fe = fe; + fe->tuner_priv = dev; + + /* check if the tuner is there */ + ret = ts2020_readreg(fe, 0x00); + if (ret < 0) + goto err; + utmp = ret; + + if ((utmp & 0x03) == 0x00) { + ret = ts2020_writereg(fe, 0x00, 0x01); + if (ret) + goto err; + + usleep_range(2000, 50000); + } + + ret = ts2020_writereg(fe, 0x00, 0x03); + if (ret) + goto err; + + usleep_range(2000, 50000); + + ret = ts2020_readreg(fe, 0x00); + if (ret < 0) + goto err; + utmp = ret; + + dev_dbg(&client->dev, "chip_id=%02x\n", utmp); + + switch (utmp) { + case 0x01: + case 0x41: + case 0x81: + dev->tuner = TS2020_M88TS2020; + chip_str = "TS2020"; + if (!dev->frequency_div) + dev->frequency_div = 1060000; + break; + case 0xc3: + case 0x83: + dev->tuner = TS2020_M88TS2022; + chip_str = "TS2022"; + if (!dev->frequency_div) + dev->frequency_div = 1103000; + break; + default: + ret = -ENODEV; + goto err; + } + + if (dev->tuner == TS2020_M88TS2022) { + switch (dev->clk_out) { + case TS2020_CLK_OUT_DISABLED: + u8tmp = 0x60; + break; + case TS2020_CLK_OUT_ENABLED: + u8tmp = 0x70; + ret = ts2020_writereg(fe, 0x05, dev->clk_out_div); + if (ret) + goto err; + break; + case TS2020_CLK_OUT_ENABLED_XTALOUT: + u8tmp = 0x6c; + break; + default: + ret = -EINVAL; + goto err; + } + + ret = ts2020_writereg(fe, 0x42, u8tmp); + if (ret) + goto err; + + if (dev->loop_through) + u8tmp = 0xec; + else + u8tmp = 0x6c; + + ret = ts2020_writereg(fe, 0x62, u8tmp); + if (ret) + goto err; + } + + /* sleep */ + ret = ts2020_writereg(fe, 0x00, 0x00); + if (ret) + goto err; + + dev_info(&client->dev, + "Montage Technology %s successfully identified\n", chip_str); + + memcpy(&fe->ops.tuner_ops, &ts2020_tuner_ops, + sizeof(struct dvb_tuner_ops)); + fe->ops.tuner_ops.release = NULL; + + i2c_set_clientdata(client, dev); + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + kfree(dev); + return ret; +} + +static int ts2020_remove(struct i2c_client *client) +{ + struct ts2020_priv *dev = i2c_get_clientdata(client); + struct dvb_frontend *fe = dev->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 ts2020_id_table[] = { + {"ts2020", 0}, + {"ts2022", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, ts2020_id_table); + +static struct i2c_driver ts2020_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "ts2020", + }, + .probe = ts2020_probe, + .remove = ts2020_remove, + .id_table = ts2020_id_table, +}; + +module_i2c_driver(ts2020_driver); + MODULE_AUTHOR("Konstantin Dimitrov <kosio.dimitrov@gmail.com>"); MODULE_DESCRIPTION("Montage Technology TS2020 - Silicon tuner driver module"); MODULE_LICENSE("GPL"); |