Re: [alsa-devel] [PATCH 2/3] ASoC: add snd_soc_of_get_port_dai_name()

Hi Stephen

2. Call an "of_xlate" function on that driver, passing it the "portspec"

I mentioned above; the driver will interpret the portspec, maps it to the ASoC port name, and return it.

The DT binding for each audio component must define the list of valid port IDs, and the number of cells used to encode the value.

See for example the GPIO and PWM subsystem's of_xlate functions.

Hmm... I guess this means struct snd_soc_dai_driver or similar has .of_xlate() callback ? But, this simple-audio is "independent" from cpu/codec.

For example, basically, we can use this simple-audio for FSI-wm8903 matching. But, this wm8903 is used on tegra too. Then, FSI-wm8903 (which use simple-audio) needs .of_xlate on wm8903 driver to get interpreted port name, but tegra-wm8903 don't need it.

Best regards --- Kuninori Morimoto