On Fri, Apr 08, 2022 at 12:46:04AM +0900, Akihiko Odaki wrote: > On 2022/04/08 0:09, Mark Brown wrote: > > Why not use DAPM for the jack? Note that normally the jack is part of > > the machine driver not the CODEC - there's no way the CODEC can know how > > it's been wired in on any given system. > It seems it is an unsual case where the codec knows the source of the jack. > RT5682 has interrupts and registers for the jack; see e.g. > rt5682_button_detect in sound/soc/codecs/rt5682.c for details. That bit is very common but there's still machine specific aspects - is the required hardware wired up, if it is wired up how exactly are things wired (separate microphone jack, headset jack, one of many jacks?). A lot of the machine driver part of things is about labeling things so that it can be displayed in a way that's easy to connect to the physical system. Generally the machine driver would define a jack and then connect the CODEC to it.
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