[linux-dvb] Re: AW: Re: [POLL] kdvb-fe, tune at initialisation, powermanagement

[Holger Waechtler <holger@convergence.de>]

Florian Schirmer wrote:
> Hi,
> 
> 
>>Yes, the thread will run in this case too, because it has to check the 
>>frontend status and to generate the frontend events when the device is 
>>open. Don't open the frontend device if you don't need it.
>>
>>(don't tell me that frontend events are evil and cause troubles 
>>everywhere - I know this. Unfortunally our middleware developers tried 
>>to kill me when I told them that I want to remove them;)
> 
> 
> Alright. But maybe we should add an interface for the frontends to
> notify the api about status changes. I've not checked the ves* fe's but
> our Atmel and TDA fe's are able to trigger an irq as soon as a state
> change happens. As far as i've understand the api, there is no way to
> make use of this capability.

The interface is dvb_frontend_add_event(). Right now the symbol local is 
not exported, but that's simple to change. Do you want to do so?

Please send a patch.

When you are doing so, could you please add a FE_CAN_ZIGZAG and 
FE_CAN_STATUSCHECK bit to the frontend capabilities -- then we can exit 
the frontend thread when the frontend is initialized and nothing has to 
be done anymore.

Holger



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