[yocto] adding a udev entry for a camera

[Edward Vidal]

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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