[alsa-devel] Support for hardware amplifier

Hi,

I am working on embedded device (using an i.MX6 MCU) which has an external amplifier.

Unfortunately I could not find much information if and how the gain of hardware amplifiers are controlled by alsa. (The only example for hardware amplification I found is the arcam-av plugin...)

Is creating a plugin the recommended way of supporting (external) hardware amplification in alsa? Can somebody clarify or point me to another example?

Thanks and kind regards, Felix Bruns

ps: Sorry for posting this twice.