[Gta04-owner] fm-tuner - was Re: hw routing audio patch removed in 3.7?

Christoph Mair christoph.mair at gmail.com
Mon Jun 10 14:25:01 CEST 2013


On Mon, Jun 10, 2013 at 2:15 PM, Dr. H. Nikolaus Schaller
<hns at goldelico.com> wrote:
>
> Am 08.06.2013 um 18:00 schrieb Benjamin Deering:
>
>
> Hmm, so put the conflicting McBSP into the platform data and calling the
> tristate function instead of the pinmux thing? That is no twl4030
> specific code, so somehow it still feels a bit strange to have it there.
> But using a tristate function is a step forward.
>
> Greetings
> Andreas Kemnade
>
> Is the change needed to enable audio from the FM tuner chip similar to the
> gsm HW routing issue?
>
> I have your userspace hack from here:
>
> http://misc.andi.de1.cc/si4721.c, it shows that it is finding a station, but
> nothing I can do in the mixer gets audio.
>
> Now I have tried this tool but I don't see more than:
>
> root at gta04:~# ./si4721 /dev/i2c-2 9380
> init resp: 00
> get_chiprev resp: 00
> 003230000032304201ffe0c3f67700
> tune freq: 00
> tune status resp: 00
> tuned to 00khz RSSI 0 SNR 0 no signal
> tune rsq resp: 00
> RSSI 0 SNR 0 no signal
> 00000000000000
> tune rsq resp: 00

> Any ideas/hints what to do? Does it need PCM clock first before tuning?

Tuning worked on my board when I tried it a long time ago. Did you
connect the (headphones) antenna?

Best regards,
  Christoph


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