[alsa-devel] [PATCH] ALSA : Au88x0 - Support 4 channels playback when AC97 codec has SDAC bit , Reduce the number of playback devices of au8830 from 32 to 16

[PATCH - ALSA 1/2] Au88x0 - Support 4 channels playback when AC97 codecs has SDAC bit

- Check SDAC bit of AC97 codec for supporting 4 channels playback.

[PATCH - ALSA 2/2] Au88x0 - Reduce the number of playback subdevices of au8830 from 32 to 16

- The maximum number of playback streams depend on the number of sample rate conveters (16) and the number of DMA channels (32).