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

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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>
This commit is contained in:
Henk Vergonet 2009-09-15 02:09:17 -03:00 committed by Mauro Carvalho Chehab
parent ecda427340
commit b5d189702b
1 changed files with 1 additions and 1 deletions
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2
drivers/media/common/tuners/tda18271-fe.c
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@ -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);