From: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-subdev.c | 20 ++++++++++++++++++++
include/media/v4l2-subdev.h | 13 +++++++++++++
2 files changed, 33 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index dc31118adc6b..dca2bea180ec 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1603,3 +1603,23 @@ int v4l2_subdev_routing_validate_1_to_1(const struct v4l2_subdev_krouting *routi
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_subdev_routing_validate_1_to_1);
+
+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);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index a0c122c9f51e..9754913b34f8 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -1586,4 +1586,17 @@ int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state,
*/
int v4l2_subdev_routing_validate_1_to_1(const struct v4l2_subdev_krouting *routing);
+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
--
2.25.1
