Commit 1284605d authored by Jacopo Mondi's avatar Jacopo Mondi Committed by Mauro Carvalho Chehab

media: rcar-vin: Handle parallel subdev in link_notify

Handle parallel subdevices in link_notify callback. If the notified link
involves a parallel subdevice, do not change routing of the VIN-CSI-2
devices and mark the VIN instance as using a parallel input. If the
CSI-2 link setup succeeds instead, mark the VIN instance as using CSI-2.
Signed-off-by: default avatarJacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent a962a804
......@@ -171,9 +171,37 @@ static int rvin_group_link_notify(struct media_link *link, u32 flags,
/* Add the new link to the existing mask and check if it works. */
csi_id = rvin_group_entity_to_csi_id(group, link->source->entity);
if (csi_id == -ENODEV) {
struct v4l2_subdev *sd;
unsigned int i;
/*
* Make sure the source entity subdevice is registered as
* a parallel input of one of the enabled VINs if it is not
* one of the CSI-2 subdevices.
*
* No hardware configuration required for parallel inputs,
* we can return here.
*/
sd = media_entity_to_v4l2_subdev(link->source->entity);
for (i = 0; i < RCAR_VIN_NUM; i++) {
if (group->vin[i] && group->vin[i]->parallel &&
group->vin[i]->parallel->subdev == sd) {
group->vin[i]->is_csi = false;
ret = 0;
goto out;
}
}
vin_err(vin, "Subdevice %s not registered to any VIN\n",
link->source->entity->name);
ret = -ENODEV;
goto out;
}
channel = rvin_group_csi_pad_to_channel(link->source->index);
mask_new = mask & rvin_group_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) {
......@@ -183,6 +211,11 @@ static int rvin_group_link_notify(struct media_link *link, u32 flags,
/* 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);
......
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