bcm2835-analog-audio: Is my driver PWM, ALSA or neither

[Michael Zoran]

On Mon, 2017-03-13 at 11:11 +0100, Gottfried Haider wrote:
> In the way I would want to use it:
> 
> "echo 0 > /sys/class/pwm/pwmchip0/export" should simply disable all
> audio co-use of the channel, until the user - or the program -
> releases it again by writing to unexport.
> 
> Plus some way (device tree overlay?) to permanently disable the audio
> functionality, which might be necessary if you have some device
> permanently hooked up, which shouldn't be receiving startup chimes or
> the like
> 
> Best,
> Gottfried

Thanks, actually really good advice. And very actionable and realistic
as well.