| Message ID | 20211020200225.1956048-2-niklas.soderlund+renesas@ragnatech.se (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: rcar-{csi2,vin}: Move to full Virtual Channel routing per CSI-2 IP | expand |
Hi Niklas, On Wed, Oct 20, 2021 at 10:02:23PM +0200, Niklas Söderlund wrote: > The code have grown organically and a lot of checks are preformed for code -> has preformed -> performed > the CSI-2 use-case even if the link notify is for a subdevice connected > to the parallel interface. > > Before reworking the CSI-2 routing logic split the CSI-2 and parallel > link notify code in two separate blocks to make it clearer. There is no > functional change. > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > --- > drivers/media/platform/rcar-vin/rcar-core.c | 87 +++++++++++---------- > 1 file changed, 45 insertions(+), 42 deletions(-) > > diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c > index 1d92cc8ede8f8a3e..bd960c348ba5228c 100644 > --- a/drivers/media/platform/rcar-vin/rcar-core.c > +++ b/drivers/media/platform/rcar-vin/rcar-core.c > @@ -795,12 +795,10 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > { > struct rvin_group *group = container_of(link->graph_obj.mdev, > struct rvin_group, mdev); > - unsigned int master_id, channel, mask_new, i; > - unsigned int mask = ~0; > struct media_entity *entity; > struct video_device *vdev; > - struct media_pad *csi_pad; > - struct rvin_dev *vin = NULL; > + struct rvin_dev *vin; > + unsigned int i; > int csi_id, ret; > > ret = v4l2_pipeline_link_notify(link, flags, notification); > @@ -826,33 +824,9 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > /* Find the master VIN that controls the routes. */ > vdev = media_entity_to_video_device(link->sink->entity); > vin = container_of(vdev, struct rvin_dev, vdev); > - master_id = rvin_group_id_to_master(vin->id); > > - if (WARN_ON(!group->vin[master_id])) { > - ret = -ENODEV; > - goto out; > - } > > - /* Build a mask for already enabled links. */ > - for (i = master_id; i < master_id + 4; i++) { > - if (!group->vin[i]) > - continue; > - > - /* Get remote CSI-2, if any. */ > - csi_pad = media_entity_remote_pad( > - &group->vin[i]->vdev.entity.pads[0]); > - if (!csi_pad) > - continue; > - > - csi_id = rvin_group_entity_to_remote_id(group, csi_pad->entity); > - channel = rvin_group_csi_pad_to_channel(csi_pad->index); > - > - mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > - } > - There are now two empty lines here > - /* Add the new link to the existing mask and check if it works. */ > csi_id = rvin_group_entity_to_remote_id(group, link->source->entity); > - > if (csi_id == -ENODEV) { > struct v4l2_subdev *sd; > > @@ -877,25 +851,54 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > vin_err(vin, "Subdevice %s not registered to any VIN\n", > link->source->entity->name); > ret = -ENODEV; > - goto out; > - } > + } else { I wonder if the group mutex should be locked in the else branch only and simplify the whole thing as: if (csi_id == -ENODEV) { /* subdev is parallel. */ for () { return 0; } return -ENODEV; } /* subdev is CSI-2 */ mutex_lock(group->mutex); ... mutex_unlock(group->mutex); Even if I see above: /* * Don't allow link changes if any stream in the graph is active as * modifying the CHSEL register fields can disrupt running streams. */ media_device_for_each_entity(entity, &group->mdev) { struct media_pad *iter; media_entity_for_each_pad(entity, iter) { if (iter->stream_count) return -EBUSY; } } Being run out of the critical session, but that was already the case. > + unsigned int master_id, channel, mask_new; > + unsigned int mask = ~0; > + struct media_pad *csi_pad; > > - channel = rvin_group_csi_pad_to_channel(link->source->index); > - mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > - vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, mask_new); > + master_id = rvin_group_id_to_master(vin->id); > > - if (!mask_new) { > - ret = -EMLINK; > - goto out; > - } > + if (WARN_ON(!group->vin[master_id])) { > + ret = -ENODEV; > + goto out; > + } > + > + /* Build a mask for already enabled links. */ > + for (i = master_id; i < master_id + 4; i++) { > + if (!group->vin[i]) > + continue; > + > + /* Get remote CSI-2, if any. */ > + csi_pad = media_entity_remote_pad( > + &group->vin[i]->vdev.entity.pads[0]); > + if (!csi_pad) > + continue; > > - /* New valid CHSEL found, set the new value. */ > - ret = rvin_set_channel_routing(group->vin[master_id], __ffs(mask_new)); > - if (ret) > - goto out; > + csi_id = rvin_group_entity_to_remote_id(group, > + csi_pad->entity); > + channel = rvin_group_csi_pad_to_channel(csi_pad->index); > > - vin->is_csi = true; > + mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > + } > > + channel = rvin_group_csi_pad_to_channel(link->source->index); > + mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > + vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, > + mask_new); > + > + if (!mask_new) { > + ret = -EMLINK; > + goto out; > + } > + > + /* New valid CHSEL found, set the new value. */ > + ret = rvin_set_channel_routing(group->vin[master_id], > + __ffs(mask_new)); > + if (ret) > + goto out; > + > + vin->is_csi = true; > + } > out: > mutex_unlock(&group->lock); > > -- > 2.33.1 >
On Thu, Nov 04, 2021 at 05:36:54PM +0100, Jacopo Mondi wrote: > On Wed, Oct 20, 2021 at 10:02:23PM +0200, Niklas Söderlund wrote: > > The code have grown organically and a lot of checks are preformed for > > code -> has > preformed -> performed > > > the CSI-2 use-case even if the link notify is for a subdevice connected > > to the parallel interface. > > > > Before reworking the CSI-2 routing logic split the CSI-2 and parallel > > link notify code in two separate blocks to make it clearer. There is no > > functional change. > > > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > > --- > > drivers/media/platform/rcar-vin/rcar-core.c | 87 +++++++++++---------- > > 1 file changed, 45 insertions(+), 42 deletions(-) > > > > diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c > > index 1d92cc8ede8f8a3e..bd960c348ba5228c 100644 > > --- a/drivers/media/platform/rcar-vin/rcar-core.c > > +++ b/drivers/media/platform/rcar-vin/rcar-core.c > > @@ -795,12 +795,10 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > { > > struct rvin_group *group = container_of(link->graph_obj.mdev, > > struct rvin_group, mdev); > > - unsigned int master_id, channel, mask_new, i; > > - unsigned int mask = ~0; > > struct media_entity *entity; > > struct video_device *vdev; > > - struct media_pad *csi_pad; > > - struct rvin_dev *vin = NULL; > > + struct rvin_dev *vin; > > + unsigned int i; > > int csi_id, ret; > > > > ret = v4l2_pipeline_link_notify(link, flags, notification); > > @@ -826,33 +824,9 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > /* Find the master VIN that controls the routes. */ > > vdev = media_entity_to_video_device(link->sink->entity); > > vin = container_of(vdev, struct rvin_dev, vdev); > > - master_id = rvin_group_id_to_master(vin->id); > > > > - if (WARN_ON(!group->vin[master_id])) { > > - ret = -ENODEV; > > - goto out; > > - } > > > > - /* Build a mask for already enabled links. */ > > - for (i = master_id; i < master_id + 4; i++) { > > - if (!group->vin[i]) > > - continue; > > - > > - /* Get remote CSI-2, if any. */ > > - csi_pad = media_entity_remote_pad( > > - &group->vin[i]->vdev.entity.pads[0]); > > - if (!csi_pad) > > - continue; > > - > > - csi_id = rvin_group_entity_to_remote_id(group, csi_pad->entity); > > - channel = rvin_group_csi_pad_to_channel(csi_pad->index); > > - > > - mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > > - } > > - > > There are now two empty lines here > > > - /* Add the new link to the existing mask and check if it works. */ > > csi_id = rvin_group_entity_to_remote_id(group, link->source->entity); > > - > > if (csi_id == -ENODEV) { > > struct v4l2_subdev *sd; > > > > @@ -877,25 +851,54 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > vin_err(vin, "Subdevice %s not registered to any VIN\n", > > link->source->entity->name); > > ret = -ENODEV; > > - goto out; > > - } > > + } else { > > I wonder if the group mutex should be locked in the else branch only > and simplify the whole thing as: Isn't the lock required to call rvin_group_entity_to_remote_id() ? I think the two lines before: vdev = media_entity_to_video_device(link->sink->entity); vin = container_of(vdev, struct rvin_dev, vdev); could however be moved before mutex_lock(). > if (csi_id == -ENODEV) { > /* subdev is parallel. */ > for () { Unless I'm mistaken, this needs locking in order to access group->vin[] safely. > return 0; > } > > return -ENODEV; > } > > /* subdev is CSI-2 */ > mutex_lock(group->mutex); > > ... > > mutex_unlock(group->mutex); > > Even if I see above: > > /* > * Don't allow link changes if any stream in the graph is active as > * modifying the CHSEL register fields can disrupt running streams. > */ > media_device_for_each_entity(entity, &group->mdev) { > struct media_pad *iter; > > media_entity_for_each_pad(entity, iter) { > if (iter->stream_count) > return -EBUSY; > } > } > > Being run out of the critical session, but that was already the case. > > > > > + unsigned int master_id, channel, mask_new; > > + unsigned int mask = ~0; > > + struct media_pad *csi_pad; > > > > - channel = rvin_group_csi_pad_to_channel(link->source->index); > > - mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > > - vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, mask_new); > > + master_id = rvin_group_id_to_master(vin->id); > > > > - if (!mask_new) { > > - ret = -EMLINK; > > - goto out; > > - } > > + if (WARN_ON(!group->vin[master_id])) { > > + ret = -ENODEV; > > + goto out; > > + } > > + > > + /* Build a mask for already enabled links. */ > > + for (i = master_id; i < master_id + 4; i++) { > > + if (!group->vin[i]) > > + continue; > > + > > + /* Get remote CSI-2, if any. */ > > + csi_pad = media_entity_remote_pad( > > + &group->vin[i]->vdev.entity.pads[0]); > > + if (!csi_pad) > > + continue; > > > > - /* New valid CHSEL found, set the new value. */ > > - ret = rvin_set_channel_routing(group->vin[master_id], __ffs(mask_new)); > > - if (ret) > > - goto out; > > + csi_id = rvin_group_entity_to_remote_id(group, > > + csi_pad->entity); > > + channel = rvin_group_csi_pad_to_channel(csi_pad->index); > > > > - vin->is_csi = true; > > + mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > > + } > > > > + channel = rvin_group_csi_pad_to_channel(link->source->index); > > + mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > > + vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, > > + mask_new); > > + > > + if (!mask_new) { > > + ret = -EMLINK; > > + goto out; > > + } > > + > > + /* New valid CHSEL found, set the new value. */ > > + ret = rvin_set_channel_routing(group->vin[master_id], > > + __ffs(mask_new)); > > + if (ret) > > + goto out; > > + > > + vin->is_csi = true; I'm tempted to factor code out to two functions for the parallel and CSI-2 case, but it could be done later too. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > + } > > out: > > mutex_unlock(&group->lock); > >
Hi Jacopo and Laurent, Thanks for your feedback! On 2021-11-10 19:48:05 +0200, Laurent Pinchart wrote: > On Thu, Nov 04, 2021 at 05:36:54PM +0100, Jacopo Mondi wrote: > > On Wed, Oct 20, 2021 at 10:02:23PM +0200, Niklas Söderlund wrote: > > > The code have grown organically and a lot of checks are preformed for > > > > code -> has > > preformed -> performed > > > > > the CSI-2 use-case even if the link notify is for a subdevice connected > > > to the parallel interface. > > > > > > Before reworking the CSI-2 routing logic split the CSI-2 and parallel > > > link notify code in two separate blocks to make it clearer. There is no > > > functional change. > > > > > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > > > --- > > > drivers/media/platform/rcar-vin/rcar-core.c | 87 +++++++++++---------- > > > 1 file changed, 45 insertions(+), 42 deletions(-) > > > > > > diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c > > > index 1d92cc8ede8f8a3e..bd960c348ba5228c 100644 > > > --- a/drivers/media/platform/rcar-vin/rcar-core.c > > > +++ b/drivers/media/platform/rcar-vin/rcar-core.c > > > @@ -795,12 +795,10 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > > { > > > struct rvin_group *group = container_of(link->graph_obj.mdev, > > > struct rvin_group, mdev); > > > - unsigned int master_id, channel, mask_new, i; > > > - unsigned int mask = ~0; > > > struct media_entity *entity; > > > struct video_device *vdev; > > > - struct media_pad *csi_pad; > > > - struct rvin_dev *vin = NULL; > > > + struct rvin_dev *vin; > > > + unsigned int i; > > > int csi_id, ret; > > > > > > ret = v4l2_pipeline_link_notify(link, flags, notification); > > > @@ -826,33 +824,9 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > > /* Find the master VIN that controls the routes. */ > > > vdev = media_entity_to_video_device(link->sink->entity); > > > vin = container_of(vdev, struct rvin_dev, vdev); > > > - master_id = rvin_group_id_to_master(vin->id); > > > > > > - if (WARN_ON(!group->vin[master_id])) { > > > - ret = -ENODEV; > > > - goto out; > > > - } > > > > > > - /* Build a mask for already enabled links. */ > > > - for (i = master_id; i < master_id + 4; i++) { > > > - if (!group->vin[i]) > > > - continue; > > > - > > > - /* Get remote CSI-2, if any. */ > > > - csi_pad = media_entity_remote_pad( > > > - &group->vin[i]->vdev.entity.pads[0]); > > > - if (!csi_pad) > > > - continue; > > > - > > > - csi_id = rvin_group_entity_to_remote_id(group, csi_pad->entity); > > > - channel = rvin_group_csi_pad_to_channel(csi_pad->index); > > > - > > > - mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > > > - } > > > - > > > > There are now two empty lines here > > > > > - /* Add the new link to the existing mask and check if it works. */ > > > csi_id = rvin_group_entity_to_remote_id(group, link->source->entity); > > > - > > > if (csi_id == -ENODEV) { > > > struct v4l2_subdev *sd; > > > > > > @@ -877,25 +851,54 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > > > vin_err(vin, "Subdevice %s not registered to any VIN\n", > > > link->source->entity->name); > > > ret = -ENODEV; > > > - goto out; > > > - } > > > + } else { > > > > I wonder if the group mutex should be locked in the else branch only > > and simplify the whole thing as: > > Isn't the lock required to call rvin_group_entity_to_remote_id() ? I > think the two lines before: > > vdev = media_entity_to_video_device(link->sink->entity); > vin = container_of(vdev, struct rvin_dev, vdev); > > could however be moved before mutex_lock(). > > > if (csi_id == -ENODEV) { > > /* subdev is parallel. */ > > for () { > > Unless I'm mistaken, this needs locking in order to access group->vin[] > safely. As Laurent points out it is needed to hold the lock both to call rvin_group_entity_to_remote_id() and to access group->vin[i]. I have taken the suggestion to move the lookup of vdev and vin outside the mutex. > > > return 0; > > } > > > > return -ENODEV; > > } > > > > /* subdev is CSI-2 */ > > mutex_lock(group->mutex); > > > > ... > > > > mutex_unlock(group->mutex); > > > > Even if I see above: > > > > /* > > * Don't allow link changes if any stream in the graph is active as > > * modifying the CHSEL register fields can disrupt running streams. > > */ > > media_device_for_each_entity(entity, &group->mdev) { > > struct media_pad *iter; > > > > media_entity_for_each_pad(entity, iter) { > > if (iter->stream_count) > > return -EBUSY; > > } > > } > > > > Being run out of the critical session, but that was already the case. > > > > > > > > > + unsigned int master_id, channel, mask_new; > > > + unsigned int mask = ~0; > > > + struct media_pad *csi_pad; > > > > > > - channel = rvin_group_csi_pad_to_channel(link->source->index); > > > - mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > > > - vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, mask_new); > > > + master_id = rvin_group_id_to_master(vin->id); > > > > > > - if (!mask_new) { > > > - ret = -EMLINK; > > > - goto out; > > > - } > > > + if (WARN_ON(!group->vin[master_id])) { > > > + ret = -ENODEV; > > > + goto out; > > > + } > > > + > > > + /* Build a mask for already enabled links. */ > > > + for (i = master_id; i < master_id + 4; i++) { > > > + if (!group->vin[i]) > > > + continue; > > > + > > > + /* Get remote CSI-2, if any. */ > > > + csi_pad = media_entity_remote_pad( > > > + &group->vin[i]->vdev.entity.pads[0]); > > > + if (!csi_pad) > > > + continue; > > > > > > - /* New valid CHSEL found, set the new value. */ > > > - ret = rvin_set_channel_routing(group->vin[master_id], __ffs(mask_new)); > > > - if (ret) > > > - goto out; > > > + csi_id = rvin_group_entity_to_remote_id(group, > > > + csi_pad->entity); > > > + channel = rvin_group_csi_pad_to_channel(csi_pad->index); > > > > > > - vin->is_csi = true; > > > + mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); > > > + } > > > > > > + channel = rvin_group_csi_pad_to_channel(link->source->index); > > > + mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); > > > + vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, > > > + mask_new); > > > + > > > + if (!mask_new) { > > > + ret = -EMLINK; > > > + goto out; > > > + } > > > + > > > + /* New valid CHSEL found, set the new value. */ > > > + ret = rvin_set_channel_routing(group->vin[master_id], > > > + __ffs(mask_new)); > > > + if (ret) > > > + goto out; > > > + > > > + vin->is_csi = true; > > I'm tempted to factor code out to two functions for the parallel and > CSI-2 case, but it could be done later too. > > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > > > + } > > > out: > > > mutex_unlock(&group->lock); > > > > > -- > Regards, > > Laurent Pinchart
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c index 1d92cc8ede8f8a3e..bd960c348ba5228c 100644 --- a/drivers/media/platform/rcar-vin/rcar-core.c +++ b/drivers/media/platform/rcar-vin/rcar-core.c @@ -795,12 +795,10 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, { struct rvin_group *group = container_of(link->graph_obj.mdev, struct rvin_group, mdev); - unsigned int master_id, channel, mask_new, i; - unsigned int mask = ~0; struct media_entity *entity; struct video_device *vdev; - struct media_pad *csi_pad; - struct rvin_dev *vin = NULL; + struct rvin_dev *vin; + unsigned int i; int csi_id, ret; ret = v4l2_pipeline_link_notify(link, flags, notification); @@ -826,33 +824,9 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, /* Find the master VIN that controls the routes. */ vdev = media_entity_to_video_device(link->sink->entity); vin = container_of(vdev, struct rvin_dev, vdev); - master_id = rvin_group_id_to_master(vin->id); - if (WARN_ON(!group->vin[master_id])) { - ret = -ENODEV; - goto out; - } - /* Build a mask for already enabled links. */ - for (i = master_id; i < master_id + 4; i++) { - if (!group->vin[i]) - continue; - - /* Get remote CSI-2, if any. */ - csi_pad = media_entity_remote_pad( - &group->vin[i]->vdev.entity.pads[0]); - if (!csi_pad) - continue; - - csi_id = rvin_group_entity_to_remote_id(group, csi_pad->entity); - channel = rvin_group_csi_pad_to_channel(csi_pad->index); - - mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); - } - - /* Add the new link to the existing mask and check if it works. */ csi_id = rvin_group_entity_to_remote_id(group, link->source->entity); - if (csi_id == -ENODEV) { struct v4l2_subdev *sd; @@ -877,25 +851,54 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, vin_err(vin, "Subdevice %s not registered to any VIN\n", link->source->entity->name); ret = -ENODEV; - goto out; - } + } else { + unsigned int master_id, channel, mask_new; + unsigned int mask = ~0; + struct media_pad *csi_pad; - channel = rvin_group_csi_pad_to_channel(link->source->index); - mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); - vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, mask_new); + master_id = rvin_group_id_to_master(vin->id); - if (!mask_new) { - ret = -EMLINK; - goto out; - } + if (WARN_ON(!group->vin[master_id])) { + ret = -ENODEV; + goto out; + } + + /* Build a mask for already enabled links. */ + for (i = master_id; i < master_id + 4; i++) { + if (!group->vin[i]) + continue; + + /* Get remote CSI-2, if any. */ + csi_pad = media_entity_remote_pad( + &group->vin[i]->vdev.entity.pads[0]); + if (!csi_pad) + continue; - /* New valid CHSEL found, set the new value. */ - ret = rvin_set_channel_routing(group->vin[master_id], __ffs(mask_new)); - if (ret) - goto out; + csi_id = rvin_group_entity_to_remote_id(group, + csi_pad->entity); + channel = rvin_group_csi_pad_to_channel(csi_pad->index); - vin->is_csi = true; + mask &= rvin_csi2_get_mask(group->vin[i], csi_id, channel); + } + channel = rvin_group_csi_pad_to_channel(link->source->index); + mask_new = mask & rvin_csi2_get_mask(vin, csi_id, channel); + vin_dbg(vin, "Try link change mask: 0x%x new: 0x%x\n", mask, + mask_new); + + if (!mask_new) { + ret = -EMLINK; + goto out; + } + + /* New valid CHSEL found, set the new value. */ + ret = rvin_set_channel_routing(group->vin[master_id], + __ffs(mask_new)); + if (ret) + goto out; + + vin->is_csi = true; + } out: mutex_unlock(&group->lock);
The code have grown organically and a lot of checks are preformed for the CSI-2 use-case even if the link notify is for a subdevice connected to the parallel interface. Before reworking the CSI-2 routing logic split the CSI-2 and parallel link notify code in two separate blocks to make it clearer. There is no functional change. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> --- drivers/media/platform/rcar-vin/rcar-core.c | 87 +++++++++++---------- 1 file changed, 45 insertions(+), 42 deletions(-)