diff options
| -rw-r--r-- | drivers/media/video/tuner-xc2028.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c index a6b05dfd670..63a6fca1f8c 100644 --- a/drivers/media/video/tuner-xc2028.c +++ b/drivers/media/video/tuner-xc2028.c @@ -875,7 +875,16 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, rc = send_seq(priv, {0x00, 0x00}); } else { offset = 2750000; - if (priv->cur_fw.type & DTV7) + /* + * 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. + */ + if (((priv->cur_fw.type & DTV7) && + (priv->cur_fw.scode_table & (ZARLINK456 | DIBCOM52))) || + ((priv->cur_fw.type & DTV78) && freq < 470000000)) offset -= 500000; } |