Greetings,
I'm working on an ASoC driver (an mfd driver for an HDMI receiver chip with an accompanying codec driver for the audio capture portion, and a cpu-dai driver for the specific SoC its hooked to). I can't seem to figure out what kind of hook I need in order to fill out the snd_pcm_substream fields specifying the rate/channels/sample-format of the receiving HDMI audio stream. In this case HDMI audio (and thus the codec) supports several rates but it doesn't make sense that the codec is told what rate to capture at as the rate is dictated by the current stream the receiver is being provided. I'm thinking there is some hook I'm missing that allows the codec to fill in the params dynamically when the capture device is opened.
Any pointers to how I deal with this?
Thanks,
Tim