Re: [PATCH] ALSA: M-Audio C600 disable Output Gain Knob

[Takashi Iwai]

On Mon, 11 May 2026 23:24:58 +0200,
Simon Wood wrote:
> 
> The C400/C600 interfaces have a large output gain knob which attenuates
> the outputs as stereo pairs (1/2, 3/4 and 5/6). The Windows driver/app
> provides a control to disable this knob/behaviour on any/all outputs,
> forcing maximum gain on each.
> 
> The 'disable behaviour' is desirable if any outputs are being used for
> aux/effects sends, or if interface is being used as a live/matrix mixer.
> 
> This patch adds a control to select which output pairs are affected by
> the Output Gain Knob. Default behaviour is to select all outputs.
> 
> Tested on the C600, likely also works for the C400.
> 
> Signed-off-by: Simon Wood <simon@xxxxxxxxxxxxx>

Applied to for-next branch.  Thanks.


Takashi