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authorMichael Krufky <mkrufky@linuxtv.org>2008-01-19 17:41:04 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-01-25 19:05:09 -0200
commited73683f06475531fb39e7ae9afe3011e4c5f8c1 (patch)
tree202af49a3ba7bb90942b05ba8c38d7d3c2d5f306 /drivers/media/dvb/frontends
parent3473e342d79be938497a31caedd3c4e8d562485f (diff)
V4L/DVB (7052): tda18271: when tuning digital, the analog demod must be tri-stated
Call analog_ops.standby during tda18271_set_params, to put the tda8295 in tri-state when tuning digital channels. Otherwise the tda8295 will interfere with the signal coming from the tda18271 into the digital demodulator. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends')
-rw-r--r--drivers/media/dvb/frontends/tda18271-fe.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index dd3657e459b..dfe72aaec38 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -836,7 +836,6 @@ static int tda18271_set_params(struct dvb_frontend *fe,
priv->mode = TDA18271_DIGITAL;
- /* see table 22 */
if (fe->ops.info.type == FE_ATSC) {
switch (params->u.vsb.modulation) {
case VSB_8:
@@ -884,6 +883,10 @@ static int tda18271_set_params(struct dvb_frontend *fe,
return -EINVAL;
}
+ /* When tuning digital, the analog demod must be tri-stated */
+ if (fe->ops.analog_ops.standby)
+ fe->ops.analog_ops.standby(fe);
+
ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0);
if (ret < 0)