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Commit c8832e8f authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] rtl2832: Fix IF calculus 



Spectrum is inverted. So, we need to invert it when calculating the
value for the IF register

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
Tested-by: default avatarAntti Palosaari <crope@iki.fi>
parent b5e2b97b

drivers/media/dvb-frontends/rtl2832.c

+4 −0
Original line number Diff line number Diff line
@@ -396,7 +396,11 @@ static int rtl2832_set_if(struct dvb_frontend *fe, u32 if_freq) 
	pset_iffreq = if_freq % priv->cfg.xtal;

	pset_iffreq *= 0x400000;

	pset_iffreq = div_u64(pset_iffreq, priv->cfg.xtal);

	pset_iffreq = -pset_iffreq;

	pset_iffreq = pset_iffreq & 0x3fffff;

	dev_dbg(&priv->i2c->dev, "%s: if_frequency=%d pset_iffreq=%08x\n",

			__func__, if_freq, (unsigned)pset_iffreq);



	ret = rtl2832_wr_demod_reg(priv, DVBT_EN_BBIN, en_bbin);

	if (ret)

		return ret;