On 04/20/2016 11:47 AM, Petr Kulhavy wrote: > > > On 20.04.2016 11:06, Lars-Peter Clausen wrote: >> On 04/20/2016 10:51 AM, Petr Kulhavy wrote: >>> >>> Thanks, Lars, for the good pointers! I will check that out. >>> >>> Is there also a way to map GPIO to a control which then appears e.g. in >>> alsamixer? That would be useful for the mic/line selection. >> Rather than exposing the GPIO itself you'd expose the logical function of >> the GPIO. E.g. in your case a ENUM control that allows to switch between >> microphone and capture and in the background this sets the GPIO according to >> the selection. > > I understand that, my question was more how to hook the enum to a function > rather to a codec register? You can use SOC_ENUM_EXT() to create the control. This macro takes a get and a put callback where you can manipulate the state of the GPIO. And then just register the control with the card. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
