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Re: [ts-7000] Re: latest status of i2s on TS-7400

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Subject: Re: [ts-7000] Re: latest status of i2s on TS-7400
From: Ciaccia <>
Date: Fri, 18 May 2007 04:23:53 -0700 (PDT)
> > I did this, I can find the patches and make them available for you.
>
> That would be nice. I see that you gone thru all these things in
> Jan, did you actually manage to get sound via i2s? Anyway, I am very
> interested in your patches, this way or another I must have i2s
> running, your code will save weeks of my work time...

I think I don't completely understand what you mean with "get sound with i2s"...
If you just want to "get sound with i2s" you can use the TS 2.4 kernel, it comes with a
i2s-cs4271 module in it.

I wanted to have a fully working ALSA support for I2S/CS4271, so I moved to the 2.6.
If my goal was just to send some PCM data to the sound card and I did not need all the
power/flexibility of ALSA, the TS-2.4 kernel could have done the trick.

Igor, what do you need exactly? If you don't need advanced ALSA features, forget about my posts.
If you just want to send some data to your card, you can use the original TS-2.4 kernel.

> Btw, i2s driver that TS took from cirrus, is it what ALSA code uses
> down the road, I mean is it what called to do the job?

I don't understand the line above. The TS-2.4 comes with an ALSA driver (originally from cirrus).
The driver "works", but some basic ALSA functionalities (especially MMAP, also called "zero-copy" communication) are missing...

I think I misunderstood your first post...

Andrea


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