[pvrusb2] xawtv fix [was: firmware problems it seems]

[xavier.gnata@free.fr]

Hi,

It is a very stange bug indeed.
Can you figure out why xawtv fails with this 0x01 ?
It should be fine to know which xawtv call is involved in this problem.
Is it a "sanity check" performed by xawtv and not by the other players?
I'm going to investigate...

Xavier


> > I've isolated the xawtv problem down to a specific revision in Subversion.
> > I'm completely surprised by what I found.  Still working on the problem.
>
> I just confirmed it, and never in a million years would I have guessed
> this as a cause.  Here's a fix you can try right now.  Edit
> pvrusb2-encoder.c and locate the line where CX2341X_ENC_SET_OUTPUT_PORT is
> being issued.  It should be around line 300 of the source file.  It's
> going to look like this:
>
>  	/* set stream output port. */
>  	ret |= pvr2_write_encoder_vcmd(hdw, CX2341X_ENC_SET_OUTPUT_PORT, 2,
>  				       0x01, 0x02);
>
> Change that last argument from 0x02 to 0x01, so that it looks like this:
>
>  	ret |= pvr2_write_encoder_vcmd(hdw, CX2341X_ENC_SET_OUTPUT_PORT, 2,
>  				       0x01, 0x01);
>
> Rebuild and replace the loaded module with the new version.  Make sure you
> unload the driver from memory first - hotplug won't automagically reload
> the driver.  When I do that, xawtv starts working again.
>
> This setting had been "0x01" in the past but I had changed it to 0x02
> because the new model 24xxx series required it.  AND I considered it safe
> because I tested the old hardware with this setting while using mplayer.
> So I'm not convinced yet that this is the right solution.  This setting is
> a deep hardware "thing" and if xawtv would have been affected then I would
> have expected mplayer to fail as well but it hasn't.  Worse still, this
> still hasn't addressed the problem of xawtv running on new hardware, since
> in that case the setting would be in conflict.
>
> I need to do more tests, however try the workaround above to get past the
> immediate problem.
>
> Has anyone seen xawtv work properly using new (i.e. model 24xxx) hardware?
>
> By the way, I am working to update the web pages now.  I was hoping to get
> something out for that tonight, but now this xawtv issue has center stage
> for the moment...
>
>    -Mike
>
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