[haiku-development] Re: USB Stack -- UVC Driver
- From: Alex von Gluck <kallisti5@xxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 12 Jun 2011 21:46:00 -0500
On Sun, 12 Jun 2011 23:31:26 +0000
Gabriel Hartmann <gabriel.hartmann@xxxxxxxxx> wrote:
> I guess I'm trying to figure out the control flow. Currently I'm
> getting
>
> KERN: usb hub 67: port 3: device removed
> KERN: usb_floppy: no valid CBI interface found
> KERN: Last message repeated 7 times.
> KERN: usb hub 67: port 3: new device connected
> KERN: usb_floppy: no valid CBI interface found
> KERN: Last message repeated 8 times.
>
> when I connect and disconnect my camera. I've tracked these messages
> origin to src/add-ons/kernel/drivers/disk/usb/usb_floppy/usb_disk.cpp.
> What I'd like to know is how this code was reached. It's inside
> usb_disk_device_added()
You can safely ignore the usb_floppy driver messages. All USB add-ons
(drivers) on the system are loaded/called when a USB device is plugged.
If the driver doesn't match the device, it returns and exits.
usb_floppy is being called to scan the new device. (you see no further
notes as it didn't find any usb floppy endpoints it effected)
> /src/add-ons/media/media-add-onssrc/add-ons/media/media-add-ons/usb_webcam/usb_webcam/addons/uvc/UVCCamDevice.cpp
> claims to support generic UVC devices as well as some other specific
> cameras (mine isn't on the list),
>
> usb_webcam_support_descriptor kSupportedDevices[] = {
> // ofcourse we support a generic UVC device...
> {{ CC_VIDEO, SC_VIDEOCONTROL, 0, 0, 0 }, "USB", "Video
> Class", "??" }, .....
>
> but I don't think this code is ever reached.
If you're not seeing any tracing messages from uvc, you would be
correct. I am not sure how that media-add-ons stuff works, however this
line makes it look like the uvc addon is commented out from the build:
http://dev.haiku-os.org/browser/haiku/trunk/src/add-ons/media/media-add-ons/usb_webcam/Jamfile#L38
A good place to start?
Good Luck!
-- Alex
Other related posts:
