diff options
Diffstat (limited to 'linux/drivers/media/common/tuners/tuner-xc2028.c')
| -rw-r--r-- | linux/drivers/media/common/tuners/tuner-xc2028.c | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/linux/drivers/media/common/tuners/tuner-xc2028.c b/linux/drivers/media/common/tuners/tuner-xc2028.c index cb5b577fa..a7466867c 100644 --- a/linux/drivers/media/common/tuners/tuner-xc2028.c +++ b/linux/drivers/media/common/tuners/tuner-xc2028.c @@ -921,22 +921,29 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, * that xc2028 will be in a safe state. * Maybe this might also be needed for DTV. */ - if (new_mode == T_ANALOG_TV) { + if (new_mode == T_ANALOG_TV) rc = send_seq(priv, {0x00, 0x00}); - } else if (priv->cur_fw.type & ATSC) { - offset = 1750000; - } else { - offset = 2750000; + + /* + * Digital modes require an offset to adjust to the + * proper frequency. + * Analog modes require offset = 0 + */ + if (new_mode == T_DIGITAL_TV) { + /* Sets the offset according with firmware */ + if (priv->cur_fw.type & DTV6) + offset = 1750000; + else if (priv->cur_fw.type & DTV7) + offset = 2250000; + else /* DTV8 or DTV78 */ + offset = 2750000; + /* - * We must adjust the offset by 500kHz in two cases in order - * to correctly center the IF output: - * 1) When the ZARLINK456 or DIBCOM52 tables were explicitly - * selected and a 7MHz channel is tuned; - * 2) When tuning a VHF channel with DTV78 firmware. + * We must adjust the offset by 500kHz when + * tuning a 7MHz VHF channel with DTV78 firmware + * (used in Australia, Italy and Germany) */ - if (((priv->cur_fw.type & DTV7) && - (priv->cur_fw.scode_table & (ZARLINK456 | DIBCOM52))) || - ((priv->cur_fw.type & DTV78) && freq < 470000000)) + if ((priv->cur_fw.type & DTV78) && freq < 470000000) offset -= 500000; } @@ -995,7 +1002,7 @@ static int xc2028_set_analog_freq(struct dvb_frontend *fe, if (priv->ctrl.input1) type |= INPUT1; return generic_set_freq(fe, (625l * p->frequency) / 10, - T_ANALOG_TV, type, 0, 0); + T_RADIO, type, 0, 0); } /* if std is not defined, choose one */ @@ -1026,21 +1033,20 @@ static int xc2028_set_params(struct dvb_frontend *fe, switch(fe->ops.info.type) { case FE_OFDM: bw = p->u.ofdm.bandwidth; - break; - case FE_QAM: - tuner_info("WARN: There are some reports that " - "QAM 6 MHz doesn't work.\n" - "If this works for you, please report by " - "e-mail to: v4l-dvb-maintainer@linuxtv.org\n"); - bw = BANDWIDTH_6_MHZ; - type |= QAM; + /* + * The only countries with 6MHz seem to be Taiwan/Uruguay. + * Both seem to require QAM firmware for OFDM decoding + * Tested in Taiwan by Terry Wu <terrywu2009@gmail.com> + */ + if (bw == BANDWIDTH_6_MHZ) + type |= QAM; break; case FE_ATSC: bw = BANDWIDTH_6_MHZ; /* The only ATSC firmware (at least on v2.7) is D2633 */ type |= ATSC | D2633; break; - /* DVB-S is not supported */ + /* DVB-S and pure QAM (FE_QAM) are not supported */ default: return -EINVAL; } |