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media: v4l2-mc: Add link flags to v4l2_create_fwnode_links_to_pad()
Add a flags argument to the v4l2_create_fwnode_links_to_pad() function to specify the link flags. This allows drivers to create immutable links for instance. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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@ -310,7 +310,7 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q)
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EXPORT_SYMBOL_GPL(v4l_vb2q_enable_media_source);
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int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd,
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struct media_pad *sink)
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struct media_pad *sink, u32 flags)
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{
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struct fwnode_handle *endpoint;
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struct v4l2_subdev *sink_sd;
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@ -367,7 +367,7 @@ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd,
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sink_sd->entity.name, sink_idx);
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ret = media_create_pad_link(&src_sd->entity, src_idx,
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&sink_sd->entity, sink_idx, 0);
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&sink_sd->entity, sink_idx, flags);
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if (ret) {
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dev_err(sink_sd->dev,
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"link %s:%d -> %s:%d failed with %d\n",
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@ -395,7 +395,7 @@ int v4l2_create_fwnode_links(struct v4l2_subdev *src_sd,
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if (!(pad->flags & MEDIA_PAD_FL_SINK))
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continue;
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ret = v4l2_create_fwnode_links_to_pad(src_sd, pad);
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ret = v4l2_create_fwnode_links_to_pad(src_sd, pad, 0);
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if (ret)
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return ret;
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}
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@ -1894,7 +1894,7 @@ static int imx_csi_notify_bound(struct v4l2_async_notifier *notifier,
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if (sd->entity.function == MEDIA_ENT_F_VID_MUX)
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sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX;
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return v4l2_create_fwnode_links_to_pad(sd, sink);
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return v4l2_create_fwnode_links_to_pad(sd, sink, 0);
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}
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static const struct v4l2_async_notifier_operations csi_notify_ops = {
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@ -621,7 +621,7 @@ static int csi2_notify_bound(struct v4l2_async_notifier *notifier,
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dev_dbg(csi2->dev, "Bound %s pad: %d\n", sd->name, pad);
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return v4l2_create_fwnode_links_to_pad(sd, sink);
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return v4l2_create_fwnode_links_to_pad(sd, sink, 0);
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}
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static void csi2_notify_unbind(struct v4l2_async_notifier *notifier,
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@ -1128,7 +1128,7 @@ static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier,
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if (sd->entity.function == MEDIA_ENT_F_VID_MUX)
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sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX;
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return v4l2_create_fwnode_links_to_pad(sd, sink);
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return v4l2_create_fwnode_links_to_pad(sd, sink, 0);
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}
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static const struct v4l2_async_notifier_operations imx7_csi_notify_ops = {
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@ -962,7 +962,7 @@ static int mipi_csis_notify_bound(struct v4l2_async_notifier *notifier,
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struct csi_state *state = mipi_notifier_to_csis_state(notifier);
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struct media_pad *sink = &state->mipi_sd.entity.pads[CSIS_PAD_SINK];
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return v4l2_create_fwnode_links_to_pad(sd, sink);
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return v4l2_create_fwnode_links_to_pad(sd, sink, 0);
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}
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static const struct v4l2_async_notifier_operations mipi_csis_notify_ops = {
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@ -91,6 +91,7 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q);
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*
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* @src_sd: pointer to a source subdev
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* @sink: pointer to a subdev sink pad
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* @flags: the link flags
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*
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* This function searches for fwnode endpoint connections from a source
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* subdevice to a single sink pad, and if suitable connections are found,
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@ -98,6 +99,11 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q);
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* called by the sink subdevice, in its v4l2-async notifier subdev bound
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* callback, to create links from a bound source subdevice.
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*
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* The @flags argument specifies the link flags. The caller shall ensure that
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* the flags are valid regardless of the number of links that may be created.
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* For instance, setting the MEDIA_LNK_FL_ENABLED flag will cause all created
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* links to be enabled, which isn't valid if more than one link is created.
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*
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* .. note::
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*
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* Any sink subdevice that calls this function must implement the
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@ -107,7 +113,7 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q);
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* Return 0 on success or a negative error code on failure.
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*/
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int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd,
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struct media_pad *sink);
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struct media_pad *sink, u32 flags);
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/**
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* v4l2_create_fwnode_links - Create fwnode-based links from a source
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