[alsa-devel] CS4232 Playback bug on Tecra 500

Krzysztof Helt krzysztof.h1 at poczta.fm
Thu Jan 29 16:02:13 CET 2009

On Mon, 26 Jan 2009 18:33:15 +0100
Krzysztof Helt <krzysztof.h1 at poczta.fm> wrote:

> The problem is more complicated. The cs4236+ cards have two
> separate PNP bios ids! The problem here is that Linux kernel
> allows only one id per device. The ids are CS0010* for the CS0000*
> device and CS0110* for the CS0100* devices. The second device
> has only control port range (one io range).
> I have prepared the patch which I tested on my Dell Latitude CPi
> laptop and now it properly discovers the CS4237B codec. Stanley,
> please test it as well.


Please take a look at the patch which unifies the cs4232 and the cs4236+
driver code. It should solve all problems with the Crystal PnP BIOS chip
detection. At least, it solves this at my Dell laptop.


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