Re: [PATCH RFC] dvb: af9035.c: Logilink vg0022a to device id table

[Andreas Kemnade <andreas@kemnade.info>]

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On Thu,  9 Mar 2017 17:51:14 +0100
Andreas Kemnade <andreas@kemnade.info> wrote:

> Ths adds the logilink VG00022a dvb-t dongle to the device table.
> The dongle contains (checked by removing the case)
> IT9303
> SI2168
>   214730
> 
> The result is in cold state:
> 
>  usb 1-6: new high-speed USB device number 15 using xhci_hcd
>  usb 1-6: New USB device found, idVendor=1d19, idProduct=0100
>  usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>  usb 1-6: Product: TS Aggregator
>  usb 1-6: Manufacturer: ITE Tech., Inc.
>  usb 1-6: SerialNumber: XXXXXXXXXXXX
>  dvb_usb_af9035 1-6:1.0: prechip_version=83 chip_version=01 chip_type=9306
>  dvb_usb_af9035 1-6:1.0: ts mode=5 not supported, defaulting to single tuner mode!
>  usb 1-6: dvb_usb_v2: found a 'Logilink VG0022A' in cold state
>  usb 1-6: dvb_usb_v2: downloading firmware from file 'dvb-usb-it9303-01.fw'
>  dvb_usb_af9035 1-6:1.0: firmware version=1.4.0.0
>  usb 1-6: dvb_usb_v2: found a 'Logilink VG0022A' in warm state
>  usb 1-6: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
>  dvbdev: DVB: registering new adapter (Logilink VG0022A)
>  si2168: probe of 6-0067 failed with error -5
> 
> when warmed up by connecing it via  a powered usb hub to win7 and
> then attaching the same usb hub to a linux machine:
> 
with some fixes in af9035.c I already get the same state as with warm
up by win7. I just need to find out which changes are really necessary
and convert it into a clean patch.

> so firmware uploading to the si2168 somehow messes things up
> 
I experimented a lot here and I found this:
If 0101 is not sent to the si2168 you can get answers from the
Si2147-A30. 
After the 0101 is sent to the si2147-A30 it will still execute
commands but you will not get the answer back through the si2168.
You just get ff.

After moving the chip id readout from si2157_init to si2157_probe,
scanning for stations works. So the si2147-A30 seems to react on
commands. 

Regards,
Andreas Kemnade

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