[linux-dvb] [PATCH] add device node locking possibility to dvbcore

Oliver Endriss o.endriss at gmx.de
Wed Aug 29 03:59:59 CEST 2007


Johannes Stezenbach wrote:
> On Sun, Aug 19, 2007, Oliver Endriss wrote:
> > 
> > Questions:
> > - Why should dvb_shutdown_timeout==0 disable sleep mode?
> 
> The use case was to watch video without any software running.
> Just program the hardware once and let it do it's job. Some
> people want that although I don't think it's really useful.
> (Works for FF cards only, of course.)
> 
> > - Does it make any sense to have LNB power 'on' and the frontend in
> >   sleep mode? 
> 
> No.
> 
> > Imho these should be controlled by dvb_powerdown_on_sleep alone,
> > for example:
> 
> Sounds good to me.

Ok.

Default value for dvb_shutdown_timeout set to 0:
http://linuxtv.org/hg/v4l-dvb/rev/56556c094e04

dvb_powerdown_on_sleep controls fe sleep _and_ LNB power:
http://linuxtv.org/hg/v4l-dvb/rev/9b00ad43d7f3

ts_bus_ctrl fixed:
http://linuxtv.org/hg/v4l-dvb/rev/e09c063c28dd

Afaics fe locking can be done using ts_bus_ctrl now
(iff dvb_shutdown_timeout == 0).

CU
Oliver

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