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.

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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