Re: Please help in adding ams-delta support to ASoC

[Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>]

Tony Lindgren wrote:
> * Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> [090618 14:52]:
>> Tony Lindgren wrote:
>>> On omap1, DSP needs to be powered and idled before some mcbsp clocks can
>>> be used. Or at least needs to be powered up.
>> AFAICS there is no DSP code in mainline at all, so the answer is no, DSP  
>> was likely not powered up at all. For several weeks I was trying to do  
>> what was impossible :/. But fortunatelly, I have learned a lot ;).
> 
> We at least used to have code to power and idle the DSP even without the
> dspgateway compiled in.. Sorry I don't remember the details. But most
> likely you need to have the dspgateway patch enabled.

Tony,
Thanks for clarifying things.

Arun K S wrote:
> On Thu, Jun 18, 2009 at 4:40 AM, Janusz
> Krzysztofik<jkrzyszt@tis.icnet.pl> wrote:
>> ... I retried the new driver on commit
>> 90e758af52ba803cba233fabee81176d99589f09 and confirmed the prevoiusly seen
>> hangup. I found that it was omap_mcbsp_request() never returning back from.
> 
> I faced the same issue while writing ASoC driver for tlv320aic23b codec.
> 
> You can have a look at this thread:
> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg03852.html
> 
> It may help.

Arun,
Thanks, it's good to hear not only me having this problem ;). So what is 
the current status of your osk driver? What tree do you use, what extra 
patches do you apply to make it actually working?

---------------------------

After all, could someone please give me an advise, what tree, even with 
buggy omap1510 mcbsp/dsp support, should I base my work on for best 
results? Omap? Sound? Mainline? I mean not only easy getting the driver 
working, but also giving it the best possible path into the mainline.

Thanks,
Janusz