Hi,
I'm currently working on ASoC driver for a voice modem codec chip
(Conexant CX20442) available on ARM OMAP amsdelta board. The driver
should provide some controls for switching audio path from handset to
speakerphone and back, changing volume etc.
The only way of controlling some aspects of the codec that I know of is
over an acompanying voice modem chip (CX81801) with AT voice commands.
The modem can be accessed over a platform serial device.
I can see two ways of getting this working:
1) add a new line discipline that would take control over the serial
line and convert it to an alsa mixer,
2) create a low level driver that would replace standard serial stuff
completely (like snd-serial-u16550 does, for example).
Please advise which one is better.
Thanks,
Janusz
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