[PATCH 3/3] ASoC: AMD: add AMD ASoC ACP-I2S driver [v4]

[Mark Brown]

On Thu, Aug 20, 2015 at 07:11:22PM -0400, Alex Deucher wrote:
> On Thu, Aug 20, 2015 at 6:31 PM, Mark Brown <broonie at kernel.org> wrote:

> > DRM is a special case here since there has always been work to share
> > bits of the code with other operating systems, the licensing for DRM is
> > very unusual within the kernel.  A quick sampling of drivers suggests
> > that this license is not universally used there either.

> > There is also the issue I raised with the fact that your non-GPL license
> > statement does not appear to correspond to the MODULE_LICENSE() that
> > you've included which claims the code is GPLed.

> Once again this is exactly what the other drm drivers and support
> modules do.  AMD generally prefers to contribute code licensed under
> an MIT/X11 style licence which is why we've done this.  IANAL, but I
> think that is compatible with "GPL and additional rights".

This is not a DRM driver, it is an ASoC driver, and like I say DRM is a
bit special.  I do note that AMD has contributed at least its CCP and
cpufreq drivers (indeed all their non-DRM code I could find with
explicit license statements) under a normal kernel license.  As far as I
can tell this licensing is entirely confined to the DRM drivers.

I am not readily able to convince myself that this is compatible with
the intent of exporting the ASoC APIs _GPL(), this looks like it can be
used as the basis for a shim layer for non-GPL code (the licensing
strategy seems very similar).  I'd need to think through this carefully.
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