diff options
Diffstat (limited to 'drivers/media/dvb-frontends/tda665x.c')
| -rw-r--r-- | drivers/media/dvb-frontends/tda665x.c | 161 |
1 files changed, 85 insertions, 76 deletions
diff --git a/drivers/media/dvb-frontends/tda665x.c b/drivers/media/dvb-frontends/tda665x.c index 63cc12378d9a..9c892533e6a7 100644 --- a/drivers/media/dvb-frontends/tda665x.c +++ b/drivers/media/dvb-frontends/tda665x.c @@ -111,9 +111,8 @@ exit: return err; } -static int tda665x_set_state(struct dvb_frontend *fe, - enum tuner_param param, - struct tuner_state *tstate) +static int tda665x_set_frequency(struct dvb_frontend *fe, + u32 new_frequency) { struct tda665x_state *state = fe->tuner_priv; const struct tda665x_config *config = state->config; @@ -121,88 +120,98 @@ static int tda665x_set_state(struct dvb_frontend *fe, u8 buf[4]; int err = 0; - if (param & DVBFE_TUNER_FREQUENCY) { - - frequency = tstate->frequency; - if ((frequency < config->frequency_max) || (frequency > config->frequency_min)) { - printk(KERN_ERR "%s: Frequency beyond limits, frequency=%d\n", __func__, frequency); - return -EINVAL; - } - - frequency += config->frequency_offst; - frequency *= config->ref_multiplier; - frequency += config->ref_divider >> 1; - frequency /= config->ref_divider; - - buf[0] = (u8) ((frequency & 0x7f00) >> 8); - buf[1] = (u8) (frequency & 0x00ff) >> 0; - buf[2] = 0x80 | 0x40 | 0x02; - buf[3] = 0x00; - - /* restore frequency */ - frequency = tstate->frequency; - - if (frequency < 153000000) { - /* VHF-L */ - buf[3] |= 0x01; /* fc, Low Band, 47 - 153 MHz */ - if (frequency < 68000000) - buf[3] |= 0x40; /* 83uA */ - if (frequency < 1040000000) - buf[3] |= 0x60; /* 122uA */ - if (frequency < 1250000000) - buf[3] |= 0x80; /* 163uA */ - else - buf[3] |= 0xa0; /* 254uA */ - } else if (frequency < 438000000) { - /* VHF-H */ - buf[3] |= 0x02; /* fc, Mid Band, 153 - 438 MHz */ - if (frequency < 230000000) - buf[3] |= 0x40; - if (frequency < 300000000) - buf[3] |= 0x60; - else - buf[3] |= 0x80; - } else { - /* UHF */ - buf[3] |= 0x04; /* fc, High Band, 438 - 862 MHz */ - if (frequency < 470000000) - buf[3] |= 0x60; - if (frequency < 526000000) - buf[3] |= 0x80; - else - buf[3] |= 0xa0; - } - - /* Set params */ - err = tda665x_write(state, buf, 5); - if (err < 0) - goto exit; - - /* sleep for some time */ - printk(KERN_DEBUG "%s: Waiting to Phase LOCK\n", __func__); - msleep(20); - /* check status */ - err = tda665x_get_status(fe, &status); - if (err < 0) - goto exit; - - if (status == 1) { - printk(KERN_DEBUG "%s: Tuner Phase locked: status=%d\n", __func__, status); - state->frequency = frequency; /* cache successful state */ - } else { - printk(KERN_ERR "%s: No Phase lock: status=%d\n", __func__, status); - } - } else { - printk(KERN_ERR "%s: Unknown parameter (param=%d)\n", __func__, param); + if ((new_frequency < config->frequency_max) + || (new_frequency > config->frequency_min)) { + printk(KERN_ERR "%s: Frequency beyond limits, frequency=%d\n", + __func__, new_frequency); return -EINVAL; } + frequency = new_frequency; + + frequency += config->frequency_offst; + frequency *= config->ref_multiplier; + frequency += config->ref_divider >> 1; + frequency /= config->ref_divider; + + buf[0] = (u8) ((frequency & 0x7f00) >> 8); + buf[1] = (u8) (frequency & 0x00ff) >> 0; + buf[2] = 0x80 | 0x40 | 0x02; + buf[3] = 0x00; + + /* restore frequency */ + frequency = new_frequency; + + if (frequency < 153000000) { + /* VHF-L */ + buf[3] |= 0x01; /* fc, Low Band, 47 - 153 MHz */ + if (frequency < 68000000) + buf[3] |= 0x40; /* 83uA */ + if (frequency < 1040000000) + buf[3] |= 0x60; /* 122uA */ + if (frequency < 1250000000) + buf[3] |= 0x80; /* 163uA */ + else + buf[3] |= 0xa0; /* 254uA */ + } else if (frequency < 438000000) { + /* VHF-H */ + buf[3] |= 0x02; /* fc, Mid Band, 153 - 438 MHz */ + if (frequency < 230000000) + buf[3] |= 0x40; + if (frequency < 300000000) + buf[3] |= 0x60; + else + buf[3] |= 0x80; + } else { + /* UHF */ + buf[3] |= 0x04; /* fc, High Band, 438 - 862 MHz */ + if (frequency < 470000000) + buf[3] |= 0x60; + if (frequency < 526000000) + buf[3] |= 0x80; + else + buf[3] |= 0xa0; + } + + /* Set params */ + err = tda665x_write(state, buf, 5); + if (err < 0) + goto exit; + + /* sleep for some time */ + printk(KERN_DEBUG "%s: Waiting to Phase LOCK\n", __func__); + msleep(20); + /* check status */ + err = tda665x_get_status(fe, &status); + if (err < 0) + goto exit; + + if (status == 1) { + printk(KERN_DEBUG "%s: Tuner Phase locked: status=%d\n", + __func__, status); + state->frequency = frequency; /* cache successful state */ + } else { + printk(KERN_ERR "%s: No Phase lock: status=%d\n", + __func__, status); + } + return 0; exit: printk(KERN_ERR "%s: I/O Error\n", __func__); return err; } +static int tda665x_set_state(struct dvb_frontend *fe, + enum tuner_param param, + struct tuner_state *tstate) +{ + if (param & DVBFE_TUNER_FREQUENCY) + return tda665x_set_frequency(fe, tstate->frequency); + + printk(KERN_ERR "%s: Unknown parameter (param=%d)\n", __func__, param); + return -EINVAL; +} + static int tda665x_release(struct dvb_frontend *fe) { struct tda665x_state *state = fe->tuner_priv; |