[media] stv090x: add support for multistream

Adds support for filtering multistream TS using stv090x hardware.
Signed-off-by: NEvgeny Plehov <EvgenyPlehov@ukr.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb-frontends/stv090x.c

@@ -3425,6 +3425,33 @@ static enum stv090x_signal_state stv090x_algo(struct stv090x_state *state)
 	return -1;
 }
 
+static int stv090x_set_mis(struct stv090x_state *state, int mis)
+{
+	u32 reg;
+
+	if (mis < 0 || mis > 255) {
+		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+	} else {
+		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
+			goto err;
+	}
+	return 0;
+err:
+	dprintk(FE_ERROR, 1, "I/O error");
+	return -1;
+}
+
 static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state, props->stream_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 		}
 	}
 
+	if (state->internal->dev_ver >= 0x30)
+		state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 	/* workaround for stuck DiSEqC output */
 	if (config->diseqc_envelope_mode)
 		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);