CX23885 card Analog/Digital Switch

CX23885 card Analog/Digital Switch

[David T. L. Wong]

Hello List,

cx23885 card Magic-Pro ProHDTV Extreme 2, has a cx23885 GPIO pin to
select Analog TV+Radio or Digital TV. How should I add that GPIO setting 
code into cx23885?
The current model that all operations goes to FE instead of card is not 
very appropriate to model this case.
I thought of adding a callback code for the tuner (XC5000), but my case
  is that this behavior is card specific, but not XC5000 generic.

Is there any "Input Selection" hook / callback mechanism to notify the 
card, the device.

Regards,
David T.L. Wong

Re: CX23885 card Analog/Digital Switch

[Devin Heitmueller]

On Mon, Sep 28, 2009 at 11:54 AM, David T. L. Wong
<davidtlwong@gmail.com> wrote:
> Hello List,
>
> cx23885 card Magic-Pro ProHDTV Extreme 2, has a cx23885 GPIO pin to
> select Analog TV+Radio or Digital TV. How should I add that GPIO setting
> code into cx23885?
> The current model that all operations goes to FE instead of card is not very
> appropriate to model this case.
> I thought of adding a callback code for the tuner (XC5000), but my case
>  is that this behavior is card specific, but not XC5000 generic.
>
> Is there any "Input Selection" hook / callback mechanism to notify the card,
> the device.
>
> Regards,
> David T.L. Wong

You should definitely *not* add a callback to xc5000 (and such a patch
will not be accepted).  The best approach may be to look at Michael
Krufky's fe_override tree, which is pending for merge:

http://www.kernellabs.com/hg/~mkrufky/fe_ioctl_override/

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

Re: CX23885 card Analog/Digital Switch

[David T. L. Wong]

Devin Heitmueller wrote:
> On Mon, Sep 28, 2009 at 11:54 AM, David T. L. Wong
> <davidtlwong@gmail.com> wrote:
>> Hello List,
>>
>> cx23885 card Magic-Pro ProHDTV Extreme 2, has a cx23885 GPIO pin to
>> select Analog TV+Radio or Digital TV. How should I add that GPIO setting
>> code into cx23885?
>> The current model that all operations goes to FE instead of card is not very
>> appropriate to model this case.
>> I thought of adding a callback code for the tuner (XC5000), but my case
>>  is that this behavior is card specific, but not XC5000 generic.
>>
>> Is there any "Input Selection" hook / callback mechanism to notify the card,
>> the device.
>>
>> Regards,
>> David T.L. Wong
> 
> You should definitely *not* add a callback to xc5000 (and such a patch
> will not be accepted).  The best approach may be to look at Michael
> Krufky's fe_override tree, which is pending for merge:
> 
> http://www.kernellabs.com/hg/~mkrufky/fe_ioctl_override/
> 
> Devin
> 

Thanks Devin and Steven. I'll will study Michael's tree.

David

Re: CX23885 card Analog/Digital Switch

[Steven Toth]

On 9/28/09 11:54 AM, David T. L. Wong wrote:
> Hello List,
>
> cx23885 card Magic-Pro ProHDTV Extreme 2, has a cx23885 GPIO pin to
> select Analog TV+Radio or Digital TV. How should I add that GPIO setting
> code into cx23885?
> The current model that all operations goes to FE instead of card is not
> very appropriate to model this case.
> I thought of adding a callback code for the tuner (XC5000), but my case
> is that this behavior is card specific, but not XC5000 generic.
>
> Is there any "Input Selection" hook / callback mechanism to notify the
> card, the device.

Digital TV is about to have mkrufky's ioctl override patch merged so that the 
bridge can be informed before/after a dtv frontend is opened, this is an entry 
point for you. The bridge can flip the GPIO on demand based on current hardware 
state.

Analog tv entry point could be the hooked into one of the video open ops, such 
as video_open(). Likewise, the bridge would be involved.

-- 
Steven Toth - Kernel Labs
http://www.kernellabs.com