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V4L/DVB (6641): xc2028: correct tuner offset for 7MHz DTV 

7MHz bandwidth DVB-T needs an adjusted offset at the PLL to ensure the IF
output is correctly centered.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Chris Pascoe 2007-11-19 06:35:26 -03:00 committed by Mauro Carvalho Chehab
parent ddf1c5f1d7
commit a44f1c43df
1 changed files with 4 additions and 1 deletions
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5
drivers/media/video/tuner-xc2028.c
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@ -764,8 +764,11 @@ static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
if (check_firmware(fe, new_mode, std, bandwidth) < 0)
goto ret;
if (new_mode == T_DIGITAL_TV)
if (new_mode == T_DIGITAL_TV) {
offset = 2750000;
if (priv->bandwidth == BANDWIDTH_7_MHZ)
offset -= 500000;
}
div = (freq - offset + DIV / 2) / DIV;