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| author | Jacopo Mondi <jacopo+renesas@jmondi.org> | 2018-06-12 05:43:29 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-07-04 09:21:45 -0400 |
| commit | a962a80476b06fc6c2a4b7d77bb38b77dd73edac (patch) | |
| tree | 6fbb9b16a8f30b7e3463a360748c0fc12619e3f1 /drivers/media/platform/rcar-vin | |
| parent | a597a772cd3f51193e1917a729db8a991615341b (diff) | |
| download | linux-a962a80476b06fc6c2a4b7d77bb38b77dd73edac.tar.bz2 | |
media: rcar-vin: Link parallel input media entities
When running with media-controller link the parallel input
media entities with the VIN entities at 'complete' callback time.
To create media links the v4l2_device should be registered first.
Check if the device is already registered, to avoid double registrations.
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/rcar-vin')
| -rw-r--r-- | drivers/media/platform/rcar-vin/rcar-core.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c index e9b5b83122e6..bf54e23b12eb 100644 --- a/drivers/media/platform/rcar-vin/rcar-core.c +++ b/drivers/media/platform/rcar-vin/rcar-core.c @@ -474,6 +474,8 @@ static void rvin_parallel_subdevice_detach(struct rvin_dev *vin) static int rvin_parallel_notify_complete(struct v4l2_async_notifier *notifier) { struct rvin_dev *vin = v4l2_dev_to_vin(notifier->v4l2_dev); + struct media_entity *source; + struct media_entity *sink; int ret; ret = v4l2_device_register_subdev_nodes(&vin->v4l2_dev); @@ -482,7 +484,26 @@ static int rvin_parallel_notify_complete(struct v4l2_async_notifier *notifier) return ret; } - return rvin_v4l2_register(vin); + if (!video_is_registered(&vin->vdev)) { + ret = rvin_v4l2_register(vin); + if (ret < 0) + return ret; + } + + if (!vin->info->use_mc) + return 0; + + /* If we're running with media-controller, link the subdevs. */ + source = &vin->parallel->subdev->entity; + sink = &vin->vdev.entity; + + ret = media_create_pad_link(source, vin->parallel->source_pad, + sink, vin->parallel->sink_pad, 0); + if (ret) + vin_err(vin, "Error adding link from %s to %s: %d\n", + source->name, sink->name, ret); + + return ret; } static void rvin_parallel_notify_unbind(struct v4l2_async_notifier *notifier, @@ -604,7 +625,8 @@ static int rvin_group_notify_complete(struct v4l2_async_notifier *notifier) /* Register all video nodes for the group. */ for (i = 0; i < RCAR_VIN_NUM; i++) { - if (vin->group->vin[i]) { + if (vin->group->vin[i] && + !video_is_registered(&vin->group->vin[i]->vdev)) { ret = rvin_v4l2_register(vin->group->vin[i]); if (ret) return ret; |