V4L/DVB (12870): tda18271: update temperature compensation calculatation formula

Update the tda18271c2_rf_tracking_filters_correction function to include
the modified temperature compensation calculatation formula as described
in Rev.04 of the TDA18271HD datasheet.

Signed-off-by: Henk Vergonet <Henk.Vergonet@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 916a6e1..6459511 100644 (file)
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -292,7 +292,7 @@ static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
        tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 
        /* calculate temperature compensation */
-       rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
+       rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal) / 1000;
 
        regs[R_EB14] = approx + rfcal_comp;
        ret = tda18271_write_regs(fe, R_EB14, 1);