From: Mauro Carvalho Chehab Date: Mon, 15 Apr 2013 22:44:39 +0000 (-0300) Subject: [media] rtl2832: Fix IF calculus X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=c8832e8f4293b1c9fce92a92e2506572f5b11775;p=deliverable%2Flinux.git [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: Mauro Carvalho Chehab Tested-by: Antti Palosaari --- diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index 2f5a2b504932..facb84841518 100644 --- a/drivers/media/dvb-frontends/rtl2832.c +++ b/drivers/media/dvb-frontends/rtl2832.c @@ -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;