7 Jul
2023
7 Jul
'23
5:06 p.m.
On Fri, Jul 07, 2023 at 03:47:47PM +0200, Takashi Iwai wrote:
Mark Brown wrote:
The ASoC generic control stuff supports inverting the value prior to presentation to userspace so it's masked there (instead of writing the number userspace sees to the register we subtract the number from the maximum value and write that to the register), pulling that up further to the ALSA core might be nice I guess?
I believe yes. Though, I'm still not sure how we can improve the mismatch of dB min/max. The dB values of those inverted controls reflect the result of subtraction, no?
Yes, the dB scale presented to userspace is reversed relative to the ordering in the registers.