[media] dvb_frontend: start media pipeline while thread is running

While the DVB thread is running, the media pipeline should be
streaming. This should prevent any attempt of using the analog
TV while digital TV is working, and vice-versa.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 50bc6056e914b8114c947e6cc2303c8e6831e834..aa530690819373a41110fc60722e77978cad1046 100644 (file)
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -131,6 +131,11 @@ struct dvb_frontend_private {
        int quality;
        unsigned int check_wrapped;
        enum dvbfe_search algo_status;
+
+#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
+       struct media_pipeline pipe;
+       struct media_entity *pipe_start_entity;
+#endif
 };
 
 static void dvb_frontend_wakeup(struct dvb_frontend *fe);
@@ -608,9 +613,9 @@ static void dvb_frontend_wakeup(struct dvb_frontend *fe)
  * or 0 if everything is OK, if no tuner is linked to the frontend or if the
  * mdev is NULL.
  */
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 static int dvb_enable_media_tuner(struct dvb_frontend *fe)
 {
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
        struct dvb_frontend_private *fepriv = fe->frontend_priv;
        struct dvb_adapter *adapter = fe->dvb;
        struct media_device *mdev = adapter->mdev;
@@ -618,10 +623,14 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
        struct media_link *link, *found_link = NULL;
        int i, ret, n_links = 0, active_links = 0;
 
+       fepriv->pipe_start_entity = NULL;
+
        if (!mdev)
                return 0;
 
        entity = fepriv->dvbdev->entity;
+       fepriv->pipe_start_entity = entity;
+
        for (i = 0; i < entity->num_links; i++) {
                link = &entity->links[i];
                if (link->sink->entity == entity) {
@@ -648,6 +657,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
        }
 
        source = found_link->source->entity;
+       fepriv->pipe_start_entity = source;
        for (i = 0; i < source->num_links; i++) {
                struct media_entity *sink;
                int flags = 0;
@@ -672,9 +682,9 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
                                source->name, sink->name,
                                flags ? "ENABLED" : "disabled");
        }
-#endif
        return 0;
 }
+#endif
 
 static int dvb_frontend_thread(void *data)
 {
@@ -696,12 +706,19 @@ static int dvb_frontend_thread(void *data)
        fepriv->wakeup = 0;
        fepriv->reinitialise = 0;
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
        ret = dvb_enable_media_tuner(fe);
        if (ret) {
                /* FIXME: return an error if it fails */
                dev_info(fe->dvb->device,
                        "proceeding with FE task\n");
+       } else {
+               ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
+                                                 &fepriv->pipe);
+               if (ret)
+                       return ret;
        }
+#endif
 
        dvb_frontend_init(fe);
 
@@ -812,6 +829,11 @@ restart:
                }
        }
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+       media_entity_pipeline_stop(fepriv->pipe_start_entity);
+       fepriv->pipe_start_entity = NULL;
+#endif
+
        if (dvb_powerdown_on_sleep) {
                if (fe->ops.set_voltage)
                        fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);