the center position (128), so as to be compatible with other drivers.
The equalizer is enhancement only, and the values < 128 don't take
any effect.
Yeah, this causes spec change....
For equalization.treble and equalization.bass, the relation between
old and new value is
new_value = (old_value / 2) + 128.
(Note this does not apply to equalization.surround.)
2. Support ++ and -- of mixerctl(1) for stepping volume variables.
3. Fix problem where the chip is not powered up
when the mic input is unmuted.
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
now prevents power down/save the device.
The external input sources are muted by default at initialization.
- Change "power.power.*" to "power.save.*". Sorry, spec change....
- Shorten tsleep(9) ident string for "ps l".
1. Add power control to reduce power consumption.
The behavior can be controlled by mixerctl(1).
2. Add suspend/resume hook to keep the parameters.
Currently this includes CODEC and control registers but
does not include the DMA state. FIXME.
3. Support "opl at ym" and "mpu at ym" attachment.
Actually, this is required for power control.
4. Add support for the on-chip 3D enhancement hardware.
This includes bass/treble enhancement, wide stereo, and
the equalization mode. This can be controlled by mixerctl(1).
5. Make "audioctl -w play.gain=xxx" work like as
"mixerctl -w inputs.dac=xxx" and now it changes
the wave output volume correctly.
6. Support hardware master volume switches.
7. Change formula of calculating gain so that all the levels
should be used equally.
8. Change "audioctl name" to "OPL3-SA3" and "audioctl version"
to the version of the chip.
itohy