[mythtv-users] Implementing HD-PVR IR Blaster

Bobby Schwartz rschwartz at lastar.com
Wed Dec 2 14:53:58 UTC 2009

> >>> I retrieved the firmware last night.  I'm back in Ubuntu land now.
> >>> Fedora was able to pick up the zilog chip but Ubuntu still
> >> The
> >>> zilog module initializes then it just kinda sits there and looks
> >> me.
> >>> I picked apart the HD-PVR V4L and Lirc drivers trying to find
> what's
> >>> broken.  It looks like the ir_probe() method in lirc_zilog.c never
> >> runs.
> >>> Conversely by watching dmesg I can see it runs after the init
> method
> >> in
> >>> Fedora.  As best I can tell something deeper in lirc is
> >> for
> >>> calling that.  I'm not sure where to look next.
> >>
> >> I can't rightly recall... What exactly are you running for a
> > an
> >> hdpvr driver and an lirc_zilog driver? Daniel K. has this working
> > an
> >> Ubuntu system, and you've now proven that it works with your
> hardware
> >> under Fedora. So it seems you're probably missing a patch to either
> > the
> >> hdpvr driver or the lirc_zilog driver.
> >
> > I'm running the stock Mythbuntu Kernel 2.6.31.  For the HDPVR I
> > downloaded V4L trunk from Hg and applied your patch to it.
> Which one? :)
> Daniel had success using the exact patches that are in the Fedora
> kernel tree.

For lirc bits
For HD-PVR http://wilsonet.com/jarod/junk/hdpvr-ir/hdpvr-ir-enable.patch
Both borrowed from this previous HD-PVR IR Blaster thread

> > For lirc I
> > pulled down the patched bits from your git tree.  If you can't think
> of
> > anything else to check I'll try to find a box I can cleanly install
> on.
> > If it's not the drivers/patches it could be something about my
> install.
> >
> > I also extracted the drivers' source from Fedora and diff'd them
> against
> > my source.  Aside from some refactoring I wasn't able to find
> anything
> > obvious that's missing.
> Hm... What did "some refactoring" look like exactly? :) I think that
> what Daniel is running wound up matching what's in Fedora 100% (aside
> from the one extra patch that sets the name in the device struct
> properly, but that isn't strictly necessary if you have only one
> hdpvr). I'm currently at a loss as to what else it could be.

Ok.  I'll try it on fresh install and start over.  It sounds like I've
missed something or fubar'd something along the way.  I don't have the
Fedora source with me but I can pack it up and send it when I'm home
from work.  I'm planning on grabbing the specific Fedora drivers and
building them in Mythbuntu.  I think I just need lirc_zilog, lirc_dev,
and the hdpvr V4L drivers.

I really appreciate all your help, time, and the work you've done on the

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