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>
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@ -836,7 +836,6 @@ static int tda18271_set_params(struct dvb_frontend *fe,
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priv->mode = TDA18271_DIGITAL;
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/* see table 22 */
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if (fe->ops.info.type == FE_ATSC) {
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switch (params->u.vsb.modulation) {
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case VSB_8:
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@ -884,6 +883,10 @@ static int tda18271_set_params(struct dvb_frontend *fe,
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return -EINVAL;
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}
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/* When tuning digital, the analog demod must be tri-stated */
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if (fe->ops.analog_ops.standby)
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fe->ops.analog_ops.standby(fe);
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ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0);
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if (ret < 0)
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