[media] dvbdev: add support for indirect interface links

Some interfaces indirectly control multiple entities.
Add support for those.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 6bf61d42c017be9ce04a71542910cbef83ff37d1..ada0738d26f26af474809c7131acadb5ade61639 100644 (file)
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -441,6 +441,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
        struct media_device *mdev = adap->mdev;
        struct media_entity *entity, *tuner = NULL, *fe = NULL;
        struct media_entity *demux = NULL, *dvr = NULL, *ca = NULL;
+       struct media_interface *intf;
 
        if (!mdev)
                return;
@@ -476,6 +477,16 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
 
        if (demux && ca)
                media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED);
+
+       /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */
+       list_for_each_entry(intf, &mdev->interfaces, list) {
+               if (intf->type == MEDIA_INTF_T_DVB_CA && ca)
+                       media_create_intf_link(ca, intf, 0);
+               if (intf->type == MEDIA_INTF_T_DVB_FE && tuner)
+                       media_create_intf_link(tuner, intf, 0);
+               if (intf->type == MEDIA_INTF_T_DVB_DVR && demux)
+                       media_create_intf_link(demux, intf, 0);
+       }
 }
 EXPORT_SYMBOL_GPL(dvb_create_media_graph);
 #endif