ALSA: hda/tegra: implement runtime suspend/resume

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This patch moves clock enable/disable from system resume/suspend to
runtime resume/suspend respectively. Along with this hda controller
chip init or stop is also moved. System resume/suspend can invoke
runtime callbacks and do necessary setup.

chip->running can be used to check for probe completion and device
access during runtime_resume or runtime_suspend can be avoided if
probe is not yet finished. This helps to avoid kernel panic during
boot where runtime PM callbacks can happen from system PM.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com>
Reviewed-by: Mohan Kumar D <mkumard@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Sameer Pujar 2019-01-22 13:03:20 +05:30 • committed by Takashi Iwai

parent 091aa42053

commit 707e0759f2

1 changed files with 33 additions and 16 deletions

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sound/pci/hda/hda_tegra.c

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