[linux-dvb] Problem on SAA7134 Asustek (Tiger or Jayhawk components : 1043:4871) : HELP !

Emmanuel Quémener emmanuel.quemener at free.fr
Tue Feb 20 11:31:17 CET 2007


Emmanuel Quémener a écrit :

> Hartmut Hackmann a écrit :
>
>   
>>
>> I noticed 2 things:
>>   
>>     
>>> tuner 2-004b: AGC2 gain is: 10
>>>     
>>>       
>> This means maximum gain. With active LNA, i would expect lower
>> values...
>> second: The reason for the tumbling channel decoder might be a
>> not closed AGC loop.
>> But if DVB-T works after analog was on once with tuner_config 3,
>> this leads me to this:
>> Analog - digital mode switch might be GPIO22 like it is with some
>> ADS / Lifeview cards. Did you ever try card=87?
>> But this would cause trouble with the LNA since in the Philips
>> solutions, GPIO22 always is involved.
>> Are you sure the board has a LNA? In the philips designs, it sits
>> under the tuner shield and looks like a SMD voltage regulator.
>> If there is a LNA, the board seems to have a mode switch we haven't
>> seen yet. Except - did you try to invert tda1004x GPIO1, so
>> 	.gpio_config   = TDA10046_GP00_I,
>> instead
>> 	.gpio_config   = TDA10046_GP01_I,
>>
>> Maybe this helps
>>   Hartmut
>>
>>   
>>     
> I will do it this evening.
>
> So, if I sum up, there are 2 tests to perform :
> - #1 : try to change board from 109 to 87 : in this case, must I get an
> clean archive or do I keep some changes to tuner_config reference ?
> - #2 : try to change GPIO config reference : in this case, same as
> before : clean archive or modified one on tuner_config reference ?
>
> Bye
>
> EQ
>
> Is it necessary to keep tuner_config=3 to definitions or must I get a
> not modified archive to try to change my board from 109 to 87 and change
> only GPIO config
>   
Sorry, but I didn't take the time in the past 2 weeks to experiment the
tests you'd like.

I try on last sunday to compile a new kernel (the last one : 2.6.20)
with a blank repository on v4l-dvb archive and make the changes on it :
it sucks !!!

- the new kernel 2.6.20 does not recognized my board
- when I try to compile new repository and install the modules, the
saa7134 module doesn't want to load
- when I search in files saa7134-dvb.c and saa-7134-cards.c the
references to tuner_config, It was impossible to find them

So, my questions :
- how is it possible for me to compile last kernel 2.6.20 with third
party v4l-dvb archives ?
- when can I get this 2.6.20 working archives ?
- what modifications can I perform to test and make working my board
(1043:4871 reference)...

Bye

EQ



More information about the linux-dvb mailing list