[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>

5 files changed, 27 insertions, 28 deletions

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 2bc80b153c59..479a5e52cb0d 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/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 */
diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index db309db79bd6..33996a01cd63 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/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;
diff --git a/drivers/media/pci/pt1/va1j5jf8007s.c b/drivers/media/pci/pt1/va1j5jf8007s.c
index d980dfb21e5e..1b637b74ef58 100644
--- a/drivers/media/pci/pt1/va1j5jf8007s.c
+++ b/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,
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index bb51edfc72a2..57e2b1763109 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 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 */
diff --git a/include/linux/dvb/version.h b/include/linux/dvb/version.h
index 70c2c7edcc7d..20e5eac2ffd3 100644
--- a/include/linux/dvb/version.h
+++ b/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_*/