Dne 23. 03. 21 v 12:43 Codrin Ciubotariu napsal(a): > To achieve this, the first thing needed is to detect whether a HW > constraint rule is enforced by a FE or a BE DAI. This means that > snd_pcm_hw_rule_add() needs to be able to differentiate between the two > type of DAIs. For this, the runtime pointer to struct snd_pcm_runtime is > replaced with a pointer to struct snd_pcm_substream, to be able to reach > substream->pcm->internal to differentiate between FE and BE DAIs. Think about other not-so-invasive solution. What about to use 'runtime->private_data' (struct snd_soc_pcm_runtime *) to determine FE / BE? Jaroslav -- Jaroslav Kysela <perex@xxxxxxxx> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.