diff options
Diffstat (limited to 'drivers/media/dvb-core/dvbdev.c')
| -rw-r--r-- | drivers/media/dvb-core/dvbdev.c | 144 |
1 files changed, 143 insertions, 1 deletions
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 983db75de350..13bb57f0457f 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -180,6 +180,93 @@ skip: return -ENFILE; } +static void dvb_register_media_device(struct dvb_device *dvbdev, + int type, int minor) +{ +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) + int ret = 0, npads; + + if (!dvbdev->adapter->mdev) + return; + + dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL); + if (!dvbdev->entity) + return; + + dvbdev->entity->info.dev.major = DVB_MAJOR; + dvbdev->entity->info.dev.minor = minor; + dvbdev->entity->name = dvbdev->name; + + switch (type) { + case DVB_DEVICE_CA: + case DVB_DEVICE_DEMUX: + case DVB_DEVICE_FRONTEND: + npads = 2; + break; + case DVB_DEVICE_NET: + npads = 0; + break; + default: + npads = 1; + } + + if (npads) { + dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads), + GFP_KERNEL); + if (!dvbdev->pads) { + kfree(dvbdev->entity); + return; + } + } + + switch (type) { + case DVB_DEVICE_FRONTEND: + dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_FE; + dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; + dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; + break; + case DVB_DEVICE_DEMUX: + dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DEMUX; + dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; + dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; + break; + case DVB_DEVICE_DVR: + dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DVR; + dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; + break; + case DVB_DEVICE_CA: + dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_CA; + dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; + dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; + break; + case DVB_DEVICE_NET: + dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_NET; + break; + default: + kfree(dvbdev->entity); + dvbdev->entity = NULL; + return; + } + + if (npads) + ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads, 0); + if (!ret) + ret = media_device_register_entity(dvbdev->adapter->mdev, + dvbdev->entity); + if (ret < 0) { + printk(KERN_ERR + "%s: media_device_register_entity failed for %s\n", + __func__, dvbdev->entity->name); + kfree(dvbdev->pads); + kfree(dvbdev->entity); + dvbdev->entity = NULL; + return; + } + + printk(KERN_DEBUG "%s: media device '%s' registered.\n", + __func__, dvbdev->entity->name); +#endif +} int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, const struct dvb_device *template, void *priv, int type) @@ -258,10 +345,11 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, __func__, adap->num, dnames[type], id, PTR_ERR(clsdev)); return PTR_ERR(clsdev); } - dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n", adap->num, dnames[type], id, minor, minor); + dvb_register_media_device(dvbdev, type, minor); + return 0; } EXPORT_SYMBOL(dvb_register_device); @@ -278,12 +366,66 @@ void dvb_unregister_device(struct dvb_device *dvbdev) device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor)); +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) + if (dvbdev->entity) { + media_device_unregister_entity(dvbdev->entity); + kfree(dvbdev->entity); + kfree(dvbdev->pads); + } +#endif + list_del (&dvbdev->list_head); kfree (dvbdev->fops); kfree (dvbdev); } EXPORT_SYMBOL(dvb_unregister_device); + +#ifdef CONFIG_MEDIA_CONTROLLER_DVB +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; + + if (!mdev) + return; + + media_device_for_each_entity(entity, mdev) { + switch (entity->type) { + case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + tuner = entity; + break; + case MEDIA_ENT_T_DEVNODE_DVB_FE: + fe = entity; + break; + case MEDIA_ENT_T_DEVNODE_DVB_DEMUX: + demux = entity; + break; + case MEDIA_ENT_T_DEVNODE_DVB_DVR: + dvr = entity; + break; + case MEDIA_ENT_T_DEVNODE_DVB_CA: + ca = entity; + break; + } + } + + if (tuner && fe) + media_entity_create_link(tuner, 0, fe, 0, 0); + + if (fe && demux) + media_entity_create_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED); + + if (demux && dvr) + media_entity_create_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED); + + if (demux && ca) + media_entity_create_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); +} +EXPORT_SYMBOL_GPL(dvb_create_media_graph); +#endif + static int dvbdev_check_free_adapter_num(int num) { struct list_head *entry; |