[RFC]Suspend/Resume flow for APL#32
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This patchset aims to implement the preliminary flow for suspend/resume for APL.
V2: Now the pipeline status is restored at resume by sending the ipc's to create all the components and set up the pipeline. With this change, the DSP is power off at suspend and when it resumes from suspend, audio playback works normally.
But when suspend is invoked while audio playback is in progress, playback does not resume and aplay quits with the error "pcm_write:2011: write error: Input/output error".
V3: changes made to reflect previous comments
Audio playback resumes normally after suspend/resume.
V4: Added support for runtime PM and made changes based on previous feedback.
Now, both runtime PM and suspend/resume work well.
2 tasks still left to do: