[yocto] adding a udev entry for a camera

[Diego Sueiro]

Edward,

Is uvcvideo module loaded?
What is lsmod and dmesg output when webcam is connected?

Regards,

--
*dS
Diego Sueiro

/*long live rock 'n roll*/


2013/10/31 Edward Vidal <vidal.develone at gmail.com>

> Hello,
> I had just recently built angstrom a few days ago.  I tried the kernel
> that was built with 3.2.28 with the same results still not getting a
> /dev/video0.
> I did the following steps since angstrom uses meta-beagleboard, in hopes
> of getting a kernel 3.8 version.
>
> git commit -a
> git checkout -b wkg-angstrom-v2013.06-yocto1.4
> origin/angstrom-v2013.06-yocto1.4
> ./oebb.sh config beagleboard
> ./oebb.sh update
>
>  . .oe/environment-angstrom-v2013.06
> MACHINE=beagleboard bitbake console-image
> rm -rf build/tmp-angstrom_v2012_12-eglibc/
>
> Even with meta-beagleboard at
> commit cdaa65dba20da97be7793404bcc90c498771fb04
> Author: Koen Kooi <koen at dominion.thruhere.net>
> Date:   Wed Oct 30 18:31:21 2013 +0100
>
>     contrib: bone-flash-tool: use --numeric-owner with tar to keep file
> ownershi
>
>     Signed-off-by: Koen Kooi <koen at dominion.thruhere.net>
> Which is a dylan branch it still was building a 3.2.28 kernel
>
> git checkout -b 3.8 feb3ea180018d0f
> commit feb3ea180018d0f64f406f208827413b91122b07
> Author: Koen Kooi <koen at dominion.thruhere.net>
> Date:   Sun Oct 27 17:17:06 2013 +0100
>
>     linux-mainline 3.8: ADC and MIDI cape patches
>
>     Signed-off-by: Koen Kooi <koen at dominion.thruhere.net>
> It still tries to build a 3.2.28 kernel.
> What should I do to force it to build the 3.8 kernel?
>
> Any and all help will be appreciated.
> Thanks to all
>
>
> On Thu, Oct 31, 2013 at 11:08 AM, Khem Raj <raj.khem at gmail.com> wrote:
>
>> On Thu, Oct 31, 2013 at 9:54 AM, Edward Vidal <vidal.develone at gmail.com>
>> wrote:
>> > hello,
>> > I removed the bus
>> > udevadm test --action=add /usr/src/kernel/sysfs
>> >
>> > run_command: calling: test
>> > adm_test: version 182
>> > This program is for debugging only, it does not run any program,
>> > specified by a RUN key. It may show incorrect results, because
>> > some values may be different, or not available at a simulation run.
>> >
>> > builtin_kmod_init: load module index
>> > add_matching_files: unable to open '/var/run/udev/rules.d': No such
>> file or
>> > directory
>> > parse_file: reading '/etc/udev/rules.d/10-c920.rules' as rules file
>> > still no /dev/video0
>> >
>> > cat /etc/udev/rules.d/10-c920.rules
>> > SUBSYSTEM=="video4linux",  ATTRS{idvendor}=="0x046d",
>> > ATTRS{idProduct}=="0x082d", NAME="video0", MODE:="0660", RUN="/bin/mknod
>> > /dev/video0 c 81 0"
>> > still no /dev/video0
>> > The camera is working correctly on my fedora 18 x86_64.
>>
>> OK so atleast your rules file is correct syntax wise. Why not try the
>> 3.8 kernel from meta-beagleboard ?
>>
>> >
>> > Note:
>> > * Before camera connected
>> > ** After camera connected
>> > Linux sim4.swbell.net 3.9.2-200.fc18.x86_64 #1 SMP Mon May 13 13:59:47
>> UTC
>> > 2013 x86_64 x86_64 x86_64 GNU/Linux
>> >
>> > Module                  Size  Used by
>> > **snd_usb_audio         145223  1
>> > **snd_usbmidi_lib        24713  1 snd_usb_audio
>> > **snd_rawmidi            29531  1 snd_usbmidi_lib
>> >
>> > *snd_hwdep              17650  1 snd_hda_codec
>> > **snd_hwdep              17650  2 snd_usb_audio,snd_hda_codec
>> >
>> > *snd_seq_device         14136  1 snd_seq
>> > **snd_seq_device         14136  2 snd_seq,snd_rawmidi
>> >
>> > *snd                    79379  19
>> >
>> snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_hda_codec,snd_hda_intel,snd_seq_device
>> > **snd                    79379  24
>> >
>> snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
>> >
>> > *video                  18991  0
>> > **video                  18991  0
>> >
>> > This is the beagleboard
>> >  lsmod
>> > Module                  Size  Used by
>> > nls_iso8859_1           3673  1
>> > nls_cp437               5339  1
>> > I am going to be checking the video is a module or built into the
>> kernel of
>> > the
>> >  uname -a
>> > Linux beagleboard 3.4.36-yocto-standard #1 Mon Oct 28 21:58:22 MDT 2013
>> > armv7l GNU/Linux
>> >
>> > Thanks
>> >
>> >
>> > On Thu, Oct 31, 2013 at 10:23 AM, Khem Raj <raj.khem at gmail.com> wrote:
>> >>
>> >> On Thu, Oct 31, 2013 at 8:45 AM, Edward Vidal <
>> vidal.develone at gmail.com>
>> >> wrote:
>> >> >
>> >> > Do I add RUN+="/bin/mknod /dev/video0 c 81 0" see below new version
>> of
>> >> > 1--c920.rules
>> >> > cat 10-c920.rules
>> >> > SUBSYSTEM=="video4linux", BUS=="usb", ATTRS{idvendor}=="0x046d",
>> >> > ATTRS{idProduct}=="0x082d", NAME="video0", MODE:="0660",
>> >> > RUN+="/bin/mknod
>> >> > /dev/video0 c 81 0"
>> >>
>> >> get rid of BUS construct there
>> >
>> >
>>
>
>
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