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[v2,29/31,media] rtl2832: Fix IF calculus

Message ID 1366159362-3773-30-git-send-email-mchehab@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mauro Carvalho Chehab April 17, 2013, 12:42 a.m. UTC 
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>
---
 drivers/media/dvb-frontends/rtl2832.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 2f5a2b5..facb848 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;