From: Jacopo Mondi <jacopo+renesas@jmondi.org>
Add a for_each_active_route() macro to replace the repeated pattern
of iterating on the active routes of a routing table.
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
.clang-format | 1 +
drivers/media/v4l2-core/v4l2-subdev.c | 20 ++++++++++++++++++++
include/media/v4l2-subdev.h | 13 +++++++++++++
3 files changed, 34 insertions(+)
@@ -140,6 +140,7 @@ ForEachMacros:
- 'for_each_active_dev_scope'
- 'for_each_active_drhd_unit'
- 'for_each_active_iommu'
+ - 'for_each_active_route'
- 'for_each_aggr_pgid'
- 'for_each_available_child_of_node'
- 'for_each_bio'
@@ -1653,6 +1653,26 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
}
EXPORT_SYMBOL_GPL(v4l2_subdev_routing_validate);
+struct v4l2_subdev_route *
+__v4l2_subdev_next_active_route(const struct v4l2_subdev_krouting *routing,
+ struct v4l2_subdev_route *route)
+{
+ if (route)
+ ++route;
+ else
+ route = &routing->routes[0];
+
+ for (; route < routing->routes + routing->num_routes; ++route) {
+ if (!(route->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE))
+ continue;
+
+ return route;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(__v4l2_subdev_next_active_route);
+
#endif /* CONFIG_MEDIA_CONTROLLER */
void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops)
@@ -1553,6 +1553,19 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
const struct v4l2_subdev_krouting *routing,
enum v4l2_subdev_routing_restriction disallow);
+struct v4l2_subdev_route *
+__v4l2_subdev_next_active_route(const struct v4l2_subdev_krouting *routing,
+ struct v4l2_subdev_route *route);
+
+/**
+ * for_each_active_route - iterate on all active routes of a routing table
+ * @routing: The routing table
+ * @route: The route iterator
+ */
+#define for_each_active_route(routing, route) \
+ for ((route) = NULL; \
+ ((route) = __v4l2_subdev_next_active_route((routing), (route)));)
+
#endif /* CONFIG_MEDIA_CONTROLLER */
/**