From: Gary Thomas <gary@mlbassoc.com>
To: yocto@yoctoproject.org
Subject: Re: adding a udev entry for a camera
Date: Thu, 31 Oct 2013 04:27:41 -0600 [thread overview]
Message-ID: <5272309D.3000508@mlbassoc.com> (raw)
In-Reply-To: <CANwz6nyYTVxmNfxK2kK0Z54uDw+Yq=RRTzmpXvJz19MDCB47MA@mail.gmail.com>
On 2013-10-30 19:12, Edward Vidal wrote:
> Hello,
> This is when I connect the camera
> udevadm monitor test
> monitor will print the received events for:
> UDEV - the event which udev sends out after rule processing
> KERNEL - the kernel uevent
>
> KERNEL[803.263336] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4 (usb)
> KERNEL[803.267456] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.0 (usb)
> KERNEL[803.269287] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.1 (usb)
> KERNEL[803.269958] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.2 (usb)
> KERNEL[803.270721] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.3 (usb)
> KERNEL[803.276214] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/usb_device/usbdev1.15 (usb_device)**********
> UDEV [803.277191] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4 (usb)
> UDEV [803.306091] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/usb_device/usbdev1.15 (usb_device)
> UDEV [803.318603] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.2 (usb)
> UDEV [803.324249] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.1 (usb)
> UDEV [803.329712] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.0 (usb)
> UDEV [803.333160] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.3 (usb)
>
> still no /dev/video0
> ls -la /dev/v*
> crw-rw---- 1 root tty 7, 0 Jan 1 2000 /dev/vcs
> crw-rw---- 1 root tty 7, 1 Jan 1 2000 /dev/vcs1
> crw-rw---- 1 root tty 7, 2 Jan 1 2000 /dev/vcs2
> crw-rw---- 1 root tty 7, 3 Oct 29 13:51 /dev/vcs3
> crw-rw---- 1 root tty 7, 128 Jan 1 2000 /dev/vcsa
> crw-rw---- 1 root tty 7, 129 Jan 1 2000 /dev/vcsa1
> crw-rw---- 1 root tty 7, 130 Jan 1 2000 /dev/vcsa2
> crw-rw---- 1 root tty 7, 131 Oct 29 13:51 /dev/vcsa3
> root@beagleboard:~# lsusb
> Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
> Bus 001 Device 004: ID 0409:0059 NEC Corp. HighSpeed Hub
> Bus 001 Device 005: ID 413c:2005 Dell Computer Corp. RT7D50 Keyboard
> Bus 001 Device 006: ID 046d:c001 Logitech, Inc. N48/M-BB48 [FirstMouse Plus]
> Bus 001 Device 015: ID 046d:082d Logitech, Inc. ***********************************************************************************
>
>
> udevadm monitor --udev
> monitor will print the received events for:
> UDEV - the event which udev sends out after rule processing
> camera removed*****************************************************
> UDEV [1325.916811] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.1 (usb)
> UDEV [1325.918489] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.0 (usb)
> UDEV [1325.919282] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.2 (usb)
> UDEV [1325.923005] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.3 (usb)
> UDEV [1325.928437] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/usb_device/usbdev1.15 (usb_device)
> UDEV [1325.932709] remove /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4 (usb)
> camera added ***************************************************************************
> UDEV [1329.344727] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4 (usb)
> UDEV [1329.376313] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/usb_device/usbdev1.16 (usb_device)
> UDEV [1329.389008] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.2 (usb)
> UDEV [1329.396241] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.1 (usb)
> UDEV [1329.401795] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.0 (usb)
> UDEV [1329.406739] add /devices/platform/usbhs_omap/ehci-omap.0/usb1/1-2/1-2.3/1-2.3.4/1-2.3.4:1.3 (usb)
>
> This is what I get in /var/log/messages
> Oct 29 14:17:28 beagleboard user.info <http://user.info> kernel: usb 1-2.3.4: USB disconnect, device number 16
> Oct 29 14:17:31 beagleboard user.info <http://user.info> kernel: usb 1-2.3.4: new high-speed USB device number 17 using ehci-omap
> Is there anything else that I can test / provide
What version of the Linux kernel are you using?
Are you sure that there is a driver available for this camera? Does it work in your laptop/desktop?
n.b. This question is probably better suited elsewhere as it is not really a Yocto issue. Maybe try:
linux-media@vger.kernel.org
> Thanks
>
>
> On Wed, Oct 30, 2013 at 5:58 PM, Khem Raj <raj.khem@gmail.com <mailto:raj.khem@gmail.com>> wrote:
>
> On Wed, Oct 30, 2013 at 1:51 PM, Edward Vidal <vidal.develone@gmail.com <mailto:vidal.develone@gmail.com>> wrote:
> > Hello,
> > I am trying to add a c920 camera to my systems. I am not getting a
> > /dev/video0.
> > lsusb --verbose shows the HD Pro Webcam C920
> > Bus 001 Device 007: ID 046d:082d Logitech, Inc.
> > Device Descriptor:
> > bLength 18
> > bDescriptorType 1
> > bcdUSB 2.00
> > bDeviceClass 239 Miscellaneous Device
> > bDeviceSubClass 2 ?
> > bDeviceProtocol 1 Interface Association
> > bMaxPacketSize0 64
> > idVendor 0x046d Logitech, Inc.
> > idProduct 0x082d
> > bcdDevice 0.11
> > iManufacturer 0
> > iProduct 2 HD Pro Webcam C920
> > iSerial 1 211EF9AF
> > bNumConfigurations 1
> > plus much more information
> >
> > I created /etc/udev/rules.d/10-c920.rules
> > SUBSYSTEM=="video4linux", BUS=="usb", ATTRS{idvendor}=="0x046d",
> > ATTRS{idProduct}=="0x082d", NAME="video0", MODE:="0660"
> >
> > mknod /dev/video0 c 81 0
> >
> > when I v4l2-ctl --all error no /dev/video0
> > Any and all help will be appreciated.
>
> you can check if udev rule is infact kicking in. use udevadm monitor/test
>
> > Thanks
> >
> >
> > _______________________________________________
> > yocto mailing list
> >yocto@yoctoproject.org <mailto:yocto@yoctoproject.org>
> >https://lists.yoctoproject.org/listinfo/yocto
> >
>
>
>
>
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
next prev parent reply other threads:[~2013-10-31 10:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-30 20:51 adding a udev entry for a camera Edward Vidal
2013-10-30 23:58 ` Khem Raj
2013-10-31 1:12 ` Edward Vidal
2013-10-31 10:27 ` Gary Thomas [this message]
2013-10-31 10:58 ` Diego Sueiro
2013-10-31 14:41 ` Khem Raj
2013-10-31 15:45 ` Edward Vidal
2013-10-31 15:55 ` Gary Thomas
2013-10-31 16:20 ` Khem Raj
2013-10-31 16:34 ` Gary Thomas
2013-10-31 16:23 ` Khem Raj
2013-10-31 16:54 ` Edward Vidal
2013-10-31 17:08 ` Khem Raj
2013-10-31 23:08 ` Edward Vidal
2013-10-31 23:27 ` Diego Sueiro
2013-11-01 23:40 ` Edward Vidal
2013-10-31 23:34 ` Gary Thomas
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