ALSA: usb-audio: scarlett2: Add phantom power switch support

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Some inputs on Gen 3 models support software-selectable phantom power.
Add support for getting and setting the state of those switches and
the "Phantom Power Persistence" switch.

Co-developed-by: Vladimir Sadovnikov <sadko4u@gmail.com>
Signed-off-by: Vladimir Sadovnikov <sadko4u@gmail.com>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/5837ce8a8c686560fc8f40b4204dd2a10721869b.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Geoffrey D. Bennett 2021-06-23 02:32:40 +09:30 • committed by Takashi Iwai

parent dbbd4f9ea0

commit ae58a1a1d7

1 changed files with 196 additions and 1 deletions

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sound/usb/mixer_scarlett_gen2.c

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