[media] stv0900: Multistream support

Multistream support for stv0900. For Netup Dual S2 CI with STV0900BAC/AAC.
Signed-off-by: NEvgeny Plehov <EvgenyPlehov@ukr.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb-frontends/stv0900_core.c

@@ -1558,6 +1558,27 @@ static int stv0900_status(struct stv0900_internal *intp,
 	return locked;
 }
 
+static int stv0900_set_mis(struct stv0900_internal *intp,
+				enum fe_stv0900_demod_num demod, int mis)
+{
+	enum fe_stv0900_error error = STV0900_NO_ERROR;
+
+	dprintk("%s\n", __func__);
+
+	if (mis < 0 || mis > 255) {
+		dprintk("Disable MIS filtering\n");
+		stv0900_write_bits(intp, FILTER_EN, 0);
+	} else {
+		dprintk("Enable MIS filtering - %d\n", mis);
+		stv0900_write_bits(intp, FILTER_EN, 1);
+		stv0900_write_reg(intp, ISIENTRY, mis);
+		stv0900_write_reg(intp, ISIBITENA, 0xff);
+	}
+
+	return error;
+}
+
+
 static enum dvbfe_search stv0900_search(struct dvb_frontend *fe)
 {
 	struct stv0900_state *state = fe->demodulator_priv;
@@ -1578,6 +1599,8 @@ static enum dvbfe_search stv0900_search(struct dvb_frontend *fe)
 	if (state->config->set_ts_params)
 		state->config->set_ts_params(fe, 0);
 
+	stv0900_set_mis(intp, demod, c->stream_id);
+
 	p_result.locked = FALSE;
 	p_search.path = demod;
 	p_search.frequency = c->frequency;
@@ -1935,6 +1958,9 @@ struct dvb_frontend *stv0900_attach(const struct stv0900_config *config,
 		if (err_stv0900)
 			goto error;
 
+		if (state->internal->chip_id >= 0x30)
+			state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 		break;
 	default:
 		goto error;

drivers/media/dvb-frontends/stv0900_reg.h

@@ -3446,8 +3446,11 @@ extern s32 shiftx(s32 x, int demod, s32 shift);
 #define R0900_P1_PDELCTRL1 0xf550
 #define PDELCTRL1 REGx(R0900_P1_PDELCTRL1)
 #define F0900_P1_INV_MISMASK 0xf5500080
+#define INV_MISMASK FLDx(F0900_P1_INV_MISMASK)
 #define F0900_P1_FILTER_EN 0xf5500020
+#define FILTER_EN FLDx(F0900_P1_FILTER_EN)
 #define F0900_P1_EN_MIS00 0xf5500002
+#define EN_MIS00 FLDx(F0900_P1_EN_MIS00)
 #define F0900_P1_ALGOSWRST 0xf5500001
 #define ALGOSWRST FLDx(F0900_P1_ALGOSWRST)