[linux-dvb] PATCH: Generic FE_DISHNETWORK_SEND_LEGACY_CMD support

Oliver Endriss o.endriss at gmx.de
Sat Sep 24 21:18:40 CEST 2005


NooneImportant wrote:
> On 9/22/05, Johannes Stezenbach wrote:
> > If you add dishnetwork_send_legacy_command code to dvb_frontend,
> > shouldn't stv0299 just use it, too? Otherwise it *is* a duplication
> > of code, isn't it?
> 
> No.  stv0299 can't use it, because the set_voltage command can take
> longer than 8msec on budget cards.  So  need to pull some tricks to
> make those work.  This may be true for other frontends as well, but
> this falback should work well for most of the rest.

For saa7146-based cards I2C communication is rather slow unless
.flags = SAA7146_I2C_SHORT_DELAY is set in struct saa7146_extension.
Someone should check whether that fixes the problem with stv0299
frontends...

Oliver

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