On 05/04/2012 08:50 AM, Thomas Mair wrote: > Am 04.05.2012 03:27 schrieb "poma" <pomidorabelisima@xxxxxxxxx>: >> >> 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/ >> "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? > The handling of the different tuners of devices with the same vid/pid > should not be a problem, because rtl28xxu driver probes for the tuner when > the device is initialized. > Thanks for clarifying! rtl28xxu.c: … * Probe used tuner. We need to know used tuner before demod attach * since there is some demod params needed to set according to tuner. … /* check FC0012 ID register; reg=00 val=a1 */ … >> 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*** > So what is missing is the e4000 tuner driver. > True. > Btw i do have a list of devices that include the Rtl2832 demod. I will send > that list on the weekend. > Groovy! > Regards > Thomas > 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
