[PATCH] DVB-S2 multistream support

[CrazyCat <crazycat69@yandex.ru>]

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Now present DTV_DVBT2_PLP_ID property for DVB-T2, so i add alias DTV_DVBS2_MIS_ID (same feature for advanced DVB-S2). Now DVB-S2 multistream filtration supported for current STV090x demod cut 3.0, so i implement support for stv090x demod driver. Additional fe-caps FE_CAN_MULTISTREAM also added.

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diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index f50d405..f625f8d 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -62,6 +62,7 @@ typedef enum fe_caps {
 	FE_CAN_8VSB			= 0x200000,
 	FE_CAN_16VSB			= 0x400000,
 	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
+	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
 	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
 	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
 	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
@@ -317,6 +318,7 @@ struct dvb_frontend_event {
 #define DTV_ISDBS_TS_ID		42
 
 #define DTV_DVBT2_PLP_ID	43
+#define DTV_DVBS2_MIS_ID	43
 
 #define DTV_ENUM_DELSYS		44
 
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index aebcdf2..83e51f9 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -947,7 +947,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 	}
 
 	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
+	c->dvbt2_plp_id = -1;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index ea86a56..eb6f1cf 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3425,6 +3425,33 @@ err:
 	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;
@@ -3433,6 +3460,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 	if (props->frequency == 0)
 		return DVBFE_ALGO_SEARCH_INVALID;
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	state->delsys = props->delivery_system;
 	state->frequency = props->frequency;
 	state->srate = props->symbol_rate;
@@ -3447,6 +3476,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4829,9 @@ 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);