On 16/04/2024 16:28, Umang Jain wrote:
Hi Tomi
On 16/04/24 4:13 pm, Tomi Valkeinen wrote:
Hi,
On 16/04/2024 13:40, Tomi Valkeinen wrote:
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.
I forgot to mention, I have not tested this patch as I don't have a HW
setup. And, of course, I now see that it has a bug. The BIT_ULL(1)
should be BIT_ULL(0).
Umang, can you try a fixed one on your side? If it works, I'll send a v5.
This doesn't work. Streaming fails as :
[ 132.108845] rkisp1 32e10000.isp: streams 0xffff8000801fef88 already
enabled on imx283 1-001a:0
[ 133.140906] rkisp1 32e10000.isp: streams 0xffff8000801fef88 already
enabled on imx283 1-001a:0
Indeed, there's a bug in v4l2_subdev_collect_streams() too:
@@ -2108,8 +2108,8 @@ static void v4l2_subdev_collect_streams(struct v4l2_subdev *sd,
{
if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) {
*found_streams = BIT_ULL(0);
- if (sd->enabled_pads & BIT_ULL(pad))
- *enabled_streams = BIT_ULL(0);
+ *enabled_streams =
+ (sd->enabled_pads & BIT_ULL(pad)) ? BIT_ULL(0) : 0;
return;
}
Tomi
With locally applied:
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c
b/drivers/media/v4l2-core/v4l2-subdev.c
index 04d85b5f23f5..4684e4e1984c 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -2203,7 +2203,7 @@ int v4l2_subdev_enable_streams(struct v4l2_subdev
*sd, u32 pad,
}
if (enabled_streams) {
- dev_dbg(dev, "streams 0x%llx already enabled on %s:%u\n",
+ dev_err(dev, "streams 0x%llx already enabled on %s:%u\n",
enabled_streams, sd->entity.name, pad);
ret = -EINVAL;
goto done;
@@ -2376,7 +2376,7 @@ int v4l2_subdev_s_stream_helper(struct v4l2_subdev
*sd, int enable)
* For non-streams subdevices, there's a single
implicit stream
* per pad.
*/
- source_mask = BIT_ULL(1);
+ source_mask = BIT_ULL(0);
}
Tomi
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
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 1c6b305839a1..83ebcde54a34 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -2360,15 +2360,24 @@ 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(1);
+ }
if (enable)
return v4l2_subdev_enable_streams(sd, pad_index, source_mask);
