Hi,
I'm requesting comments to this small series to enable multiple different kcontrol types for a single widget.
Currently asoc allows to define and parse multiple same type kcontrols for single widget. So you can have for example two volume controls in a widget but not for example one byte and one enum control. I personally had this kind of use case where I wanted to set filter coefficients with bytes and something else with an enum in one processing widget.
I don't have that good perspective on the asoc history on this part so I don't know is there some reason for the existing logic or is it just ok to change it like in this series. I've been told some drivers use virtual widget for this kind of situation, so they define two widget's (one virtual) with separate controls, but in reality bind the controls into the same component in lower level. Or can we just actually use separate types in one widget?
First patch is just adding the type field to kcontrol struct. Second patch is a refactoring to take into account the different control types in parsing the topology. So it looks a little bit messy, but is just actually looping through the types in the kcontrol creation. Third patch is me using this in sof driver, so not so directly needed here. I've tested this thing personally up from topology down till the dsp and for me it seems to work, but as said I can't be sure if I'm breaking something else here.
Jaska Uimonen (3): ALSA: control: add kcontrol_type to control ASoC: soc-topology: enable use of multiple control types ASoC: SOF: topology: use individual kcontrol types
include/sound/control.h | 2 + sound/core/control.c | 2 + sound/soc/soc-topology.c | 462 ++++++++++++++++++--------------------- sound/soc/sof/topology.c | 13 +- 4 files changed, 230 insertions(+), 249 deletions(-)