usb-audio: support more than two channels of audio
This commit adds support for 5.1 and 7.1 audio playback. This commit
adds a new property to usb-audio:
* multi=on|off
Whether to enable the 5.1 and 7.1 audio support. When off (default)
it continues to emulate the old stereo-only device. When on, it
emulates a slightly different audio device that supports 5.1 and 7.1
audio.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id:
98e96606228afa907fa238eac26573d5af63434a.
1570996490.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>