Re: [PATCH] em28xx: fix for Dikom DK300 hybrid USB tuner (aka Kworld VS-DVB-T 323UR ) (digital mode)

["Andrea.Amorosi76@gmail.com" <Andrea.Amorosi76@gmail.com>]

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Devin Heitmueller ha scritto:
> On Mon, Nov 16, 2009 at 3:49 PM, Andrea.Amorosi76@gmail.com
> <Andrea.Amorosi76@gmail.com> wrote:
>   
>> The usb is the following:
>> Bus 002 Device 010: ID eb1a:e312 eMPIA Technology, Inc.
>> (I don't remember what it was previously, but it seems wrong how can I be
>> sure about that?).
>> I have put back the driver to the original state, but still it doesn't work.
>> Did I have to reprogram the eprom? If so, it is possible via usb?
>> Thank you,
>> Andrea
>>
>> PS I've found an old dmesg.
>> The USB ID is wrong! The old one was eb1a:e323
>>     
>
> Ok, so that confirms that indeed the eeprom was corrupted.  I would
> suggest you hack the USB_DEVICE() entry in em28xx-cards.c to be
> eb1a:e312.  This will allow the driver to load and the i2c device to
> be setup.  Then use the eeprom repair script to rewrite the eeprom.
> At that point you should be able to remove the hack, because the USB
> ID will be back to eb1a:e323.
>
> Devin
>
>   
Ok Devin!
It works again!!!
If you come in Trieste, let me know and I'll pay you a beer :-)
I can also confirm that the digital_defaul gpio does not work so the 
kworld_330u_digital gpio is needed.
In any case I've an usbsnoop of this device but I don't know what I've 
to search in that 125Mb log text file.
I've parsed it with the parse _snifusb2.pl tool and the result is the 
attached files.
Still I don't know what to search to extract the gpio for analog and 
digital tv.
If someone can explain me some basis, maybe I can validate the actual 
assumptions made in the driver as far as the gpio is concerned.
In particular I suspect that the digital demodulator remains active when 
switching from digital to analog tv.

Andrea








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