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[media] dvbdev: add support for interfaces 

Now that the infrastruct for that is set, add support for
interfaces.

Please notice that we're missing two links:
	DVB FE intf    -> tuner
	DVB demux intf -> dvr

Those should be added latter, after having the entire graph
set. With the current infrastructure, those should be added
at dvb_create_media_graph(), but it would also require some
extra core changes, to allow the function to enumerate the
interfaces.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-08-21 08:20:22 -03:00
parent 1283f849dc
commit 8211b187ec
2 changed files with 79 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
drivers/media/dvb-core/dvbdev.c
View File

@ -180,14 +180,36 @@ skip:
return -ENFILE;
}
static void dvb_register_media_device(struct dvb_device *dvbdev,
int type, int minor)
static void dvb_create_media_entity(struct dvb_device *dvbdev,
int type, int minor)
{
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
int ret = 0, npads;
if (!dvbdev->adapter->mdev)
switch (type) {
case DVB_DEVICE_FRONTEND:
npads = 2;
break;
case DVB_DEVICE_DEMUX:
npads = 2;
break;
case DVB_DEVICE_CA:
npads = 2;
break;
case DVB_DEVICE_NET:
/*
* We should be creating entities for the MPE/ULE
* decapsulation hardware (or software implementation).
*
* However, the number of for the MPE/ULE decaps may not be
* fixed. As we don't have yet dynamic support for PADs at
* the Media Controller, let's not create the decap
* entities yet.
*/
return;
default:
return;
}
dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL);
if (!dvbdev->entity)
@ -197,19 +219,6 @@ static void dvb_register_media_device(struct dvb_device *dvbdev,
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);
@ -230,18 +239,11 @@ static void dvb_register_media_device(struct dvb_device *dvbdev,
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;
@ -263,11 +265,63 @@ static void dvb_register_media_device(struct dvb_device *dvbdev,
return;
}
printk(KERN_DEBUG "%s: media device '%s' registered.\n",
printk(KERN_DEBUG "%s: media entity '%s' registered.\n",
__func__, dvbdev->entity->name);
#endif
}
static void dvb_register_media_device(struct dvb_device *dvbdev,
int type, int minor)
{
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
u32 intf_type;
if (!dvbdev->adapter->mdev)
return;
dvb_create_media_entity(dvbdev, type, minor);
switch (type) {
case DVB_DEVICE_FRONTEND:
intf_type = MEDIA_INTF_T_DVB_FE;
break;
case DVB_DEVICE_DEMUX:
intf_type = MEDIA_INTF_T_DVB_DEMUX;
break;
case DVB_DEVICE_DVR:
intf_type = MEDIA_INTF_T_DVB_DVR;
break;
case DVB_DEVICE_CA:
intf_type = MEDIA_INTF_T_DVB_CA;
break;
case DVB_DEVICE_NET:
intf_type = MEDIA_INTF_T_DVB_NET;
break;
default:
return;
}
dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev,
intf_type, 0,
DVB_MAJOR, minor,
GFP_KERNEL);
/*
* Create the "obvious" link, e. g. the ones that represent
* a direct association between an interface and an entity.
* Other links should be created elsewhere, like:
* DVB FE intf -> tuner
* DVB demux intf -> dvr
*/
if (!dvbdev->entity || !dvbdev->intf_devnode)
return;
media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, 0);
#endif
}
int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
const struct dvb_device *template, void *priv, int type)
{

1
drivers/media/dvb-core/dvbdev.h
View File

@ -149,6 +149,7 @@ struct dvb_device {
/* Allocated and filled inside dvbdev.c */
struct media_entity *entity;
struct media_intf_devnode *intf_devnode;
struct media_pad *pads;
#endif