EMU10K1/EMU10K2 driver
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

EMU10K1/EMU10K2 driver
e.g. When HD Capture source is set to SPDIF,
     setting HD Capture channel to 0 captures from CDROM digital input.
     setting HD Capture channel to 1 captures from SPDIF in.
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

EMU10K1/EMU10K2 driver
The capture rate does in fact vary, but it only captures anything if
the HD Capture source is set to I2S or AC97. I have not tested if the sound
is actually captured from an physical input of some type or not.
TODO: Get SPDIF capture working.
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

EMU10K1/EMU10K2 driver
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

EMU10K1/EMU10K2 driver
Although we can set 44100 as the output rate, the SPDIF can do it, but the Analog output cannot.
The SPDIF has the bug, whereby the Left channel arrives one sample late, so although we don't do any resampling,
it is not good for AC3 non-audio output.
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

EMU10K1/EMU10K2 driver
One can select which capture source, but one cannot yet set volumes.
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!