On Mon, Apr 6, 2020 at 10:37 AM Fabio Estevam <festevam@xxxxxxxxx> wrote:
>
> Hi,
>
> I am running kernel 5.6.2 on an imx6qp sabresd, but I cannot get the
> mem2mem element from imx-media-csc-scaler.c to probe.
>
> I don't see imx6_media_probe_complete() getting called, hence
> imx_media_csc_scaler_device_init() is never called and no mem2mem
> element is registered.
>
> Any ideas as to how to get mem2mem registered on i.MX6?
It seems that v4l2_async_notifier_can_complete() is always false, so
v4l2_async_notifier_call_complete() is never called.
If I change it like this:
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -213,10 +213,6 @@ v4l2_async_notifier_try_complete(struct
v4l2_async_notifier *notifier)
if (!notifier->v4l2_dev)
return 0;
- /* Is everything ready? */
- if (!v4l2_async_notifier_can_complete(notifier))
- return 0;
-
return v4l2_async_notifier_call_complete(notifier);
}
Then the mem2mem driver can be successfully probed:
[ 4.601350] imx-media: Registered ipu_ic_pp csc/scaler as /dev/video11
Any suggestions?
Thanks
