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authorMauro Carvalho Chehab <mchehab@redhat.com>2013-04-15 19:44:39 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-04-16 21:39:28 -0300
commitc8832e8f4293b1c9fce92a92e2506572f5b11775 (patch)
tree3b0c9ba9a6edf54966cb594368d377e4ca21b57e
parentb5e2b97b0ba474dd2abd672be320d1f1030800e8 (diff)
[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 <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
-rw-r--r--drivers/media/dvb-frontends/rtl2832.c4
1 files changed, 4 insertions, 0 deletions
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;

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