On 05/04/2012 03:49 PM, Gianluca Gennari wrote: > Hi poma, > thanks for the very interesting links. > ;) > Il 04/05/2012 03:27, poma ha scritto: >> On 05/03/2012 11:03 AM, Gianluca Gennari wrote: >>> 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"**. >> >> 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/ > > That's it. Opening the device enclosure, I can read this on the PCB: > "EzTV668 1.0" > and it looks identical to the picture posted there. > Groovy! >> "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? > > This is not a big problem: the rtl2832 driver should read the tuner type > from an internal register and load the proper module (or exit with an > error message if the tuner is unsupported). > Ack, thanks! >> 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*** > > Very nice. So we should ask Harald Welte if he is willing to have his > driver merged in the kernel. > Undoubtedly! Please ping Thomas and Antti, accordingly. >> regards, >> poma >> > > Regards, > Gianluca regards, poma -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
