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ljalves / linux_media

TBS linux open source drivers
https://github.com/ljalves/linux_media/wiki
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TBS 6285 (V21) & saa716x_budget module parameters #66

Closed RayCic closed 9 years ago

RayCic commented 9 years ago

I played with TBS 6285 (V21) & saa716x_budget module parameters.

I used following methodology:

  1. set module parameters in file: /etc/modprobe.d/my-dvb.conf
  2. warm reboot system
  3. run: w_scan -F -t 3
  4. if w_scan did not find any channels, then rerun w_scan
  5. repeat steps 2.-4. three times
  6. write down results
  7. goto step 1.

What I found:

CASE 1: int_type=0 verbose=any value in this case first w_scan run did not find any transponders, in second run it found all transponders & channels

CASE 2: int_type=1 verbose=0 in this case in first & second run w_scan found all transponders but was unable to receive channels data

CASE 3: int_type=1 verbose>0 in this case w_scan behaves randomly: sometimes it behaves like in CASE 2 but sometimes it did not find any transponders on first run and found all transponders on second run, but was unable to receive channels data.

Conclusions: 1) TBS 6285 (V21) is usable only with module parameter: int_type=0 2) card requires some kind of initialization by programs like w_scan or dvb-fe-tool 3) IMHO driver have timing issues, especially with parameter int_type=1

bas-t commented 9 years ago

Just a heads up: when those patches get merged, they don't cleanly apply against your 'latest' branch. I synced si2157 with upstream before merging antti's silabs branch: https://github.com/bas-t/media_tree/commit/39bda003365032befe10aba0ac0784533f77378c

ljalves commented 9 years ago

No activity for some time here - closing this issue. Feel free to reopen if needed.