[media] dvb_frontend: add multistream support

Unify multistream support at the DVBAPI: several delivery systems
allow it. Yet, each one had its own name. So, instead of adding
a third version of this field, remove the per-standard naming,
unifying it into a common name.

The legacy code number can still be used by old applications.

Version increased to 5.8.

[mchehab@redhat.com: joined the va1j5jf007s patch, in order to
 avoid compilation breakage]
Signed-off-by: Evgeny Plehov <EvgenyPlehov@ukr.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb-core/dvb_frontend.c

@@ -949,8 +949,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 		c->layer[i].segment_count = 0;
 	}
 
-	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
+	c->stream_id = NO_STREAM_ID_FILTER;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
@@ -1021,8 +1020,8 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
 	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
 	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
 
-	_DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
-	_DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
+	_DTV_CMD(DTV_STREAM_ID, 1, 0),
+	_DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
 
 	/* Get */
 	_DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
@@ -1386,11 +1385,11 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
 	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
 		tvp->u.data = c->layer[2].interleaving;
 		break;
-	case DTV_ISDBS_TS_ID:
-		tvp->u.data = c->isdbs_ts_id;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		tvp->u.data = c->dvbt2_plp_id;
+
+	/* Multistream support */
+	case DTV_STREAM_ID:
+	case DTV_DVBT2_PLP_ID_LEGACY:
+		tvp->u.data = c->stream_id;
 		break;
 
 	/* ATSC-MH */
@@ -1787,11 +1786,11 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
 	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
 		c->layer[2].interleaving = tvp->u.data;
 		break;
-	case DTV_ISDBS_TS_ID:
-		c->isdbs_ts_id = tvp->u.data;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		c->dvbt2_plp_id = tvp->u.data;
+
+	/* Multistream support */
+	case DTV_STREAM_ID:
+	case DTV_DVBT2_PLP_ID_LEGACY:
+		c->stream_id = tvp->u.data;
 		break;
 
 	/* ATSC-MH */

drivers/media/dvb-core/dvb_frontend.h

@@ -370,11 +370,8 @@ struct dtv_frontend_properties {
 	    u8			interleaving;
 	} layer[3];
 
-	/* ISDB-T specifics */
-	u32			isdbs_ts_id;
-
-	/* DVB-T2 specifics */
-	u32                     dvbt2_plp_id;
+	/* Multistream specifics */
+	u32			stream_id;
 
 	/* ATSC-MH specifics */
 	u8			atscmh_fic_ver;

drivers/media/pci/pt1/va1j5jf8007s.c

@@ -329,8 +329,8 @@ va1j5jf8007s_set_ts_id(struct va1j5jf8007s_state *state)
 	u8 buf[3];
 	struct i2c_msg msg;
 
-	ts_id = state->fe.dtv_property_cache.isdbs_ts_id;
-	if (!ts_id)
+	ts_id = state->fe.dtv_property_cache.stream_id;
+	if (!ts_id || ts_id == NO_STREAM_ID_FILTER)
 		return 0;
 
 	buf[0] = 0x8f;
@@ -356,8 +356,8 @@ va1j5jf8007s_check_ts_id(struct va1j5jf8007s_state *state, int *lock)
 	struct i2c_msg msgs[2];
 	u32 ts_id;
 
-	ts_id = state->fe.dtv_property_cache.isdbs_ts_id;
-	if (!ts_id) {
+	ts_id = state->fe.dtv_property_cache.stream_id;
+	if (!ts_id || ts_id == NO_STREAM_ID_FILTER) {
 		*lock = 1;
 		return 0;
 	}
@@ -587,7 +587,8 @@ static struct dvb_frontend_ops va1j5jf8007s_ops = {
 		.frequency_stepsize = 1000,
 		.caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO |
 			FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
-			FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
+			FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO |
+			FE_CAN_MULTISTREAM,
 	},
 
 	.read_snr = va1j5jf8007s_read_snr,

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 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) */
@@ -338,9 +339,9 @@ struct dvb_frontend_event {
 
 #define DTV_ISDBT_LAYER_ENABLED	41
 
-#define DTV_ISDBS_TS_ID		42
-
-#define DTV_DVBT2_PLP_ID	43
+#define DTV_STREAM_ID		42
+#define DTV_ISDBS_TS_ID_LEGACY	DTV_STREAM_ID
+#define DTV_DVBT2_PLP_ID_LEGACY	43
 
 #define DTV_ENUM_DELSYS		44
 
@@ -436,6 +437,7 @@ enum atscmh_rs_code_mode {
 	ATSCMH_RSCODE_RES        = 3,
 };
 
+#define NO_STREAM_ID_FILTER	(~0U)
 
 struct dtv_cmds_h {
 	char	*name;		/* A display name for debugging purposes */

include/linux/dvb/version.h

@@ -24,6 +24,6 @@
 #define _DVBVERSION_H_
 
 #define DVB_API_VERSION 5
-#define DVB_API_VERSION_MINOR 7
+#define DVB_API_VERSION_MINOR 8
 
 #endif /*_DVBVERSION_H_*/