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Subject: media: subdev: Support non-routing subdevs in
v4l2_subdev_s_stream_helper()
Author: Tomi Valkeinen <tomi.valkei...@ideasonboard.com>
Date: Wed Apr 24 18:39:13 2024 +0300
At the moment v4l2_subdev_s_stream_helper() only works for subdevices
that support routing. As enable/disable_streams now also works for
subdevices without routing, improve v4l2_subdev_s_stream_helper() to do
the same.
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Tested-by: Umang Jain <umang.j...@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkei...@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/v4l2-core/v4l2-subdev.c | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
---
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c
b/drivers/media/v4l2-core/v4l2-subdev.c
index 2a236f7e9f2b..4f71199bf592 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -2422,15 +2422,24 @@ int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd,
int enable)
if (WARN_ON(pad_index == -1))
return -EINVAL;
- /*
- * As there's a single source pad, just collect all the source streams.
- */
- state = v4l2_subdev_lock_and_get_active_state(sd);
+ if (sd->flags & V4L2_SUBDEV_FL_STREAMS) {
+ /*
+ * As there's a single source pad, just collect all the source
+ * streams.
+ */
+ state = v4l2_subdev_lock_and_get_active_state(sd);
- for_each_active_route(&state->routing, route)
- source_mask |= BIT_ULL(route->source_stream);
+ for_each_active_route(&state->routing, route)
+ source_mask |= BIT_ULL(route->source_stream);
- v4l2_subdev_unlock_state(state);
+ v4l2_subdev_unlock_state(state);
+ } else {
+ /*
+ * For non-streams subdevices, there's a single implicit stream
+ * per pad.
+ */
+ source_mask = BIT_ULL(0);
+ }
if (enable)
return v4l2_subdev_enable_streams(sd, pad_index, source_mask);
