[alsa-devel] [PATCH v2] [ALSA] Add ASoC drivers for the Freescale MPC8610 SoC

Grant Likely grant.likely at secretlab.ca
Fri Jan 11 00:17:20 CET 2008

On 1/10/08, Timur Tabi <timur at freescale.com> wrote:
> Grant Likely wrote:
> > Does the driver access the DMA and GUTS registers directly?  If so,
> > what do you have to protect against race conditions of other drivers
> > accessing them also.
> I don't have any more protection than any other driver that accesses SOC
> registers directly.  Last I heard, Zhang's DMA driver was in limbo, and that
> driver would be the best place to arbitrate DMA register access.  I was planning
> on adding arbitration support to that driver after both drivers were applied.

That sounds appropriate

> As for the GUTS driver, well, I just program a few registers at startup, and I
> don't think any other driver touches them.

Okay; at some point in the future they'll need to be accessed from a
common routine too.


Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

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