Re: LR307Q Radio

[Hartmut Hackmann <hartmut.hackmann@xxxxxxxxxxx>]

Hi, all

hermann pitton schrieb:
> Am Dienstag, den 30.01.2007, 19:24 +0100 schrieb Peter Missel:
>> Hi Paul!
>>
>>> I have a Lifeview FlyDVB-T mini PCI (LR307Q) half working with -
>>> 	modprobe saa7134 card=60 audio_clock_override=0x00187de7
>>> Analog TV works (with a couple of issues), but FM radio doesn't.
>>>
>>> I've tried the 'radio' program that comes with xawtv, but it mostly
>>>  produces noise when tuned into a known station.
>>> There are occasional bursts of audio, but these only last a fraction
>>>  of a second.  The same happens with fmscan from fmtools.
>>> Could this be something to do with the GPIOs in saa7134-cards.c?
>>> If so, how can I figure out what GPIOs to change?
>> Hmmm ... the LR307 is the FlyDVB-T Duo Mini, which would probably have a 
>> better start with card=55 (the PCI version FlyDVB-T Duo, LR306).
>>
>> Does the card (or its implementation in your particular notebook) have a 
>> separate FM radio antenna jack? If it does, and LifeView's product page 
>> suggests that it does, then the driver indeed needs to implement GPIO driven 
>> input switching to the analog tuner.
>>
>> Provided that card=55 works for you (without any additional parameters 
>> please!), then apply my recently posted "Add FM radio" patch for card 55, and 
>> try radio again.
>>
>> Finally, please post dmesg output of the saa7134 driver as well 
>> as 'lspci -vvxxx' output for the card, so we can then add autodetection for 
>> it. We might even be able to run the Mini flavor entirely on the PCI card's 
>> driver - LifeView's designs are usually very very similar to each other.
> 
> Hi,
> 
> the audio clock will still be wrong.
> 
> Looks like Paul should use Hartmut's repository with large changes and
> improvements. Your patch is already applied there.
> 
Yes. Sorry, i forgot to mention this.

> Also support for the LNA on Paul's card seems ready, but I'm waiting for
> Hartmut on that.
>
The support for LNAs indeed is there, but i should add this:
The LNA is not automatically detected. You will need to set the
options
.tuner_config=x
in the appropriate section of saa7134-cards.c resp. saa7134-dvb.c
valid values are
0 : no LNA
1 : Pinnacle 310i
2 : older Philips solution, this should be the most common one
3 : new Philips solution
I could only test the variants 0 and 2. For testing, you should turn
the debug options for the tuner.ko and saa7134-dvb.ko (new) on.
The driver will report what it does with the LNA, A lower value for
AGC2 indicates that the LNA is on.

> I'm just testing on the Asus P7131 Dual and all seems fine (only a typo
> for its name). Analog TV tuning is also pretty fast now.
> 
It should be a bit faster in case there is a signal.

> BTW, this is not related to this current changes, but must have happened
> prior or is since ever, which I don't think. There is some decent
> whistling noise from the analog audio input when in DVB-T mode.
> Somebody else notice it? Yeah, easy to mute it on the mixer.
> 
This can easily be right. Please note that analog baseband can still
be used in DVB mode on hybrid cards. So i can't easily mute the sound
processing. But maybe i can switch the sound input...

> Cheers,
> Hermann

<snip>

The code in my personal repository is ready for testing but i shouldn't
ask Mauro to pull yet:
- There might be a conflict with the work of Markus - not clarified yet.
- The thing with the board name in DVB seems just to go into the opposite
  direction of what is done in the other drivers. We should come to a
  common opinion.
- The DVB-T tuning code for the tda827x should go into another module.
- We might try to find a better solution for my changes in the analog
  tuner driver - especially for handling the function pointer.

I am astonished why there are so few comments yet.

Best regards
  Hartmut

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