On Fri, Sep 23, 2016 at 10:49:57AM +0300, Felipe Balbi wrote:
>
> Hi,
>
> Bin Liu <[email protected]> writes:
> > +Fengwei Yin per his request.
> >
> > On Thu, Sep 22, 2016 at 10:48:40PM +0300, Felipe Balbi wrote:
> >>
> >> Hi,
> >>
> >> Bin Liu <[email protected]> writes:
> >>
> >> [...]
> >>
> >> >> Here's one that actually compiles, sorry about that.
> >> >
> >> > No worries, I was sleeping ;-)
> >> >
> >> > I will test it out early next week. Thanks.
> >>
> >> meanwhile, how about some instructions on how to test this out myself?
> >> How are you using g_webcam and what are you running on host side? Got a
> >> nice list of commands there I can use? I think I can get to bottom of
> >> this much quicker if I can reproduce it locally ;-)
> >
> > On device side:
> > - first patch g_webcam as in my first email in this thread to enable
> > 640x480@30fps;
> > - # modprobe g_webcam streaming_maxpacket=3072
> > - then run uvc-gadget to feed the YUV frames;
> > http://git.ideasonboard.org/uvc-gadget.git
>
> as is, g_webcam never enumerates to the host. It's calls to
Right, on mainline kernel (I tested 4.8.0-rc7) g_webcam is broken with
DWC3, g_webcam does not enumerate on the host. But it works on v4.4.21.
[snip]
>
> uvc-gadget keeps printing this error message:
>
> 159 if ((ret = ioctl(dev->fd, VIDIOC_DQBUF, &buf)) < 0) {
> 160 printf("Unable to dequeue buffer: %s (%d).\n",
> strerror(errno),
> 161 errno);
> 162 return ret;
> 163 }
I removed this printf, since it floods the console if start uvc-gadget
before connect to the host.
BTY, you don't have to start uvc-gadget first then connect usb cable. I
keep the cable always connected.
Regards,
-Bin.
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
