On 07/23/11 16:21, Fons Adriaensen wrote:
Note: I suggest to narrow the CC list a bit and better move the discussion to alsa-devel. At least, let's drop LKML and arch.
Seems to have solved the problem :-) :-)
Good to know. I'll wait for your final confirmation and then commit it.
One problem: the gain settings have changed, now having a range of 0..64. How do these values map to the internal ones (0..0xffff) ? I *hope* there is value corresponding to EXACTLY 0x8000 (gain = 1) !!!
For the simple ALSA mixer, the driver does
gain = ucontrol->value.integer.value[0]*UNITY_GAIN/64;
UNITY_GAIN is 32768 (0x8000), so if you select 64 on the ALSA side, it gives you exactly what you need. Or in other words: faders to 100% in alsamixer, that's it.
With hdspmixer or any other software that's using the full mixer, you can still use the fine-grained 65k steps.
BTW, why was this change made?
No idea. I reckon faberman was tired of stepping through 65k mixer levels in alsamixer. ;) (disclaimer: I never used the old driver, so I don't know how it was before)
Cheers