On Fri, 12 Jan 2018 11:37:28 +0100, Kumar, Abhijeet wrote: > > > It's better, but doesn't guarantee that the node reached the given power state. codec_read assures that the verb is sent and the codec gives the response. But it means only the target state gets updated, and doesn't mean that the actual state reached. > > Thanks Takashi for replying. I guess, I should make use of return value from codec_read and retry if power state is not set properly! I'll make those changes and update again. And just wondering, how does hdmi_codec_prepare() and hdmi_codec_complete() gurantee while powering up and down the afg ? There are two power states in the codec node: the target and the actual. By setting the power state, the target is set, but the actual state change may still take some time. In such a case, you'd need to wait until the actual state reaches. See hda_sync_power_state() in the hda legacy. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
