CTL_SPEAKER
left = MONO(dev, CTL_SPEAKER);
case CTL_SPEAKER:
cmpci_alloc_ctrl(dev, CTL_SPEAKER, 75);
control = statep->ctrls[CTL_SPEAKER];
audiohd_create_stereo(statep, CTL_SPEAKER,
v = dev->ctrls[CTL_SPEAKER].val & 0xff;
case CTL_SPEAKER:
solo_alloc_ctrl(dev, CTL_SPEAKER, 0x4b);