Re: af9015: tuner id:179 not supported, please report!

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Hi all,

Using some usb replay tools used for making the pvrusb2 work, I am
able to receive a working MPEG-TS stream, after snooping communication
in Windows. It's an ugly way to make things work, but now I'm able to
watch television in VLC. It's limited to 758MHz @ 8000KHz, thought,
because I only ran an usbsnoop for that specific frequency.

So right now I'm able to write the TS stream into a pipe / stdout /
file, but creating a (fixed frequency) driver for v4l is way too
complicated for me, at the moment. I don't really understand how the
v4l dvb drivers work, probably because I'm not really experienced in
doing so ;-) Currently, I'm trying to understand how frequency
selection works with this chip, and I'll be making a standalone
application to save the TS stream. Then, maybe someone else can write
a proper v4l driver for this chip.

Regards,
Bert

On Sat, Dec 5, 2009 at 10:45, Jan Sundman <jan.sundman@xxxxxxxxx> wrote:
> Hi,
>
> Thanks for the info, I will have a look and see if it is worth the
> trouble.
>
> Br,
>
> // Jan
>
> On Fri, 2009-12-04 at 13:03 -0500, Michael Krufky wrote:
>> On Thu, Dec 3, 2009 at 5:03 PM, Devin Heitmueller
>> <dheitmueller@xxxxxxxxxxxxxx> wrote:
>> > On Thu, Dec 3, 2009 at 4:47 PM, Bert Massop <bert.massop@xxxxxxxxx> wrote:
>> >> Hi Jan,
>> >>
>> >> The datasheet for the TDA18218 can be obtained from NXP:
>> >> http://www.nxp.com/documents/data_sheet/TDA18218HN.pdf
>> >>
>> >> That's all the information I have at the moment, maybe Mike has some
>> >> other information (like the Application Note mentioned in the
>> >> datasheet, that claims to contain information on writing drivers, but
>> >> cannot be found anywhere).
>> >>
>> >> Best regards,
>> >>
>> >> Bert
>> >
>> > Took a quick look at that datasheet.  I would guess between that
>> > datasheet and a usbsnoop, there is probably enough there to write a
>> > driver that basically works for your particular hardware if you know
>> > what you are doing.  The register map is abbreviated, but probably
>> > good enough...
>> >
>> > Devin
>>
>> The datasheet is missing too much important information needed to
>> write a fully featured driver for the part, and I wouldn't recommend
>> using a usbsnoop for this type of tuner, but be my guest and prove me
>> wrong.
>>
>> You might be able to get it working, but you'll end up with tons of
>> binary blobs hardcoded for each frequency, unless you use a
>> programming guide.  Unfortunately, I don't have one that I can share
>> :-/
>>
>> I think you would be much better off purchasing supported hardware, instead.
>>
>> Good luck, though...
>>
>> -Mike
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>
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