[PATCH 0/4] ALSA: usb-audio: Add dB scale quirks for AB13X and Xiaomi Speaker Mini

[Rong Zhang]

I recently got two devices with insane volume control, so I tried to
measure their volume mapping and add dB scale quirks for them.

PATCH 1 collects the code snippets for dB scale override into a helper
function, with unified info and warning messages, and also deconflicts
playback dB scale quirks of DragonFly.

PATCH 2 applies the MV-SILICON linear volume quirk only to the affected
mixers, instead of the whole device.

PATCH 3 adds dB scale quirk for an AB13X variant.

PATCH 4 adds dB scale quirk for the Xiaomi Speaker Mini.

Signed-off-by: Rong Zhang <i@xxxxxxxx>
---
Rong Zhang (4):
      ALSA: usb-audio: Unify dB scale override
      ALSA: usb-audio: Apply MV-SILICON linear volume quirk per mixer
      ALSA: usb-audio: Add dB scale quirk for an AB13X variant
      ALSA: usb-audio: Add dB scale quirk for Xiaomi Speaker Mini

 sound/usb/mixer_quirks.c | 285 ++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 245 insertions(+), 40 deletions(-)
---
base-commit: c03c1a14507dfaf8b856c2608f9ac216021fc222
change-id: 87da826d-b4-uac-ya-audio-e8c0421aa2cf

Thanks,
Rong