From a962a80476b06fc6c2a4b7d77bb38b77dd73edac Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Tue, 12 Jun 2018 05:43:29 -0400 Subject: [PATCH] media: rcar-vin: Link parallel input media entities MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Acked-by: Niklas Söderlund Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/rcar-vin/rcar-core.c | 26 ++++++++++++++++++++++++-- 1 file 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; -- 2.11.0