- SOC_SINGLE("Digital Loopback Switch adc to dac", WM8940_COMPANDINGCTL,
0, 1, 0),This should be called Digital Sidetone Switch and probably ought to be a DAPM control - there's an ADC to DAC route.
I'll take your word for it!
If you switch the ADC to the DAC then you've got an audio path between them.
Hi Mark,
I'm having some trouble getting my head around how to actually specify the audio route for this Sidetone route.
As far as I can tell you can't specify the following,
{"DAC", "Digtal Sidetone Switch", "ADC"} As in snd_soc_dapm_add_route only mux, switch and mixer controls can take a control element.
I can find plenty of examples for cases where this path routes through a mixer or mux, but in this simple case (it's either connected or not and no volume controls are on that path) what do I do?
Nearest I can currently come up with is to insert a mux with only one option...
Thanks,
Jonathan