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

Dr. H. Nikolaus Schaller hns at goldelico.com
Mon Jun 10 15:04:14 CEST 2013


Am 10.06.2013 um 14:48 schrieb Andreas Kemnade:

> Hi,
> 
> On Mon, 2013-06-10 at 14:15 +0200, Dr. H. Nikolaus Schaller 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
> 
> freshly downloaded and compiled
> 
> gta04:~# ./si4721 /dev/i2c-2 9380
> init resp: 00
> get_chiprev resp: 00
> 003230000032304201ffe0e321f600

The initial parts are the same, only some difference in the last parts.
Maybe some Chip-ID (serial number?).

> tune freq: 00
> tune status resp: 00
> tuned to 93800khz RSSI 8 SNR 0 no signal
> tune rsq resp: 00
> RSSI 7 SNR 0 no signal
> 00080007000006
> tune rsq resp: 00
> RSSI 6 SNR 0 no signal
> 00080006000006
> tune rsq resp: 00
> RSSI 6 SNR 0 no signal
> 00080006000006
> tune rsq resp: 81
> RSSI 6 SNR 0 no signal
> 
> check:
> i2cdetect -r -y 2

root at gta04:~# i2cdetect -r -y 2
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- 11 -- -- -- -- -- -- -- -- -- -- -- -- UU -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: UU -- -- 33 -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- UU -- -- -- UU -- -- UU -- -- -- -- -- -- -- 
50: UU -- -- -- 54 -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- UU                         
root at gta04:~# 

> 
> it should not be taken (no UU at 0x11). PCM clocks need not be active at
> that moment (it can also give analog output). I am using 3.7.+a bunch of
> usb-hacks. I am not sure at the moment about maybe other
> clocks/voltages.

Hm. I rather suspect some header/library issue now. I have installed
gcc-4.6 (build-essentials) on the GTA04 and compiled directly
"on target". But I am not sure which linux headers and library headers
this will use.

-- hns


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