Il 04/05/2012 03:27, poma ha scritto:

On 05/03/2012 11:03 AM, Gianluca Gennari wrote:

quoted

Hi poma,
I have a 0BDA:2838 (Easycap EZTV646) and a 0BDA:2832 (no name 20x20mm
mini DVB-T stick) and both are based on the E4000 tuner, which is not
supported in the kernel at the moment.
I have no idea if there are sticks with the same USB PID and the fc0012
tuner.

OK, second one - no name device is "Realtek RTL2832U reference design"**.

Just for reference, the "no name device" I bought on ebay is exactly
this one:

http://i01.i.aliimg.com/photo/v0/513925059/Mini_notebook_USB_DVB_T_Stick_receiver.jpg

Tuner: E4000
USB PID: 0BDA:2832

It is listed as "Unikoo UK001T (P160)" on the RTL SDR compatibility list:
http://www.reddit.com/r/RTLSDR/comments/s6ddo/rtlsdr_compatibility_list_v2_work_in_progress/

Best regards,
Gianluca

First one:
Once upon a time there was a "EasyCAP"�
"After while crocodile!"
�and "EzCAP" was born.
http://szforwardvideo.en.alibaba.com/aboutus.html
Obviously Easycap EZTV646 != EzCAP EzTV646
http://www.reddit.com/r/RTLSDR/comments/s6ddo/rtlsdr_compatibility_list_v2_work_in_progress/
ezcap EzTV646	0BDA:2838	RTL2832U/FC0012		Some revisions may have the E4000*
http://i.imgur.com/mFD1X.jpg
(Generic)	0BDa:2838	RTL2832U/E4000*
�
And, in addition:
http://sdr.osmocom.org/trac/wiki/rtl-sdr
0x0bda	0x2832	all of them	Generic RTL2832U (e.g. hama nano)**
0x0bda	0x2838	E4000	ezcap USB 2.0 DVB-T/DAB/FM dongle
�
Maybe?
https://sites.google.com/site/myrtlsdr/
"EzCap EZTV646 has got RTL2832U/FC0012. However rtl-sdr must be tweaked
to force FC0012 tuner because it has the same PID as EZTV668 (PID:
0x2838) so running it whithout a tweak will select Elonics E4000 tuner.
Works, not so good at filtering."
�
Conclusion:
At least two devices share same vid/pid with different tuners - fc0012
vs e4000.
How to resolve this from a drivers perspective in a proper way?

Beside,
there is GPL'ed 'e4k' tuner source code aka 'e4000 improved'*** (Elonics
E4000)
by Harald Welte
http://cgit.osmocom.org/cgit/osmo-sdr/tree/firmware/src/tuner_e4k.c
http://sdr.osmocom.org/trac/
http://sdr.osmocom.org/trac/wiki/rtl-sdr
http://wiki.spench.net/wiki/RTL2832U***

regards,
poma